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HomeMy WebLinkAboutNC6170022580__20240130_Camp Lejeune Military Res_Site 88 FY 2022 LTM Report CH2M 13024 Ballantyne Corp. Place Suite 450 Charlotte, NC 28277 O +1 704.544.4040 F +1 704.544.4041 January 30, 2024 0007NVI1.A.PN.EV.LT.FR Ms. Laarni Cooper NAVFAC Mid-Atlantic EV3 Environmental Restoration Naval Station Norfolk Building N-26, Room 3300 9324 Virginia Avenue Norfolk, VA 23511-3095 Subject: Final Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune, North Carolina CTO-5246 Dear Ms. Cooper: CH2M HILL is pleased to submit the Final Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 for Marine Corps Base (MCB) Camp Lejeune, North Carolina. A copy has been posted to the MCB Camp Lejeune website and has been OCR’d. If you have any questions or comments, please contact me at (541) 768-3691. Sincerely, CH2M HILL Jill Schrlau Project Manager CC: Ben Francisco, NAVFAC Mid-Atlantic Thomas Richard, MCB Camp Lejeune Laura Spung, MCB Camp Lejeune Angela Moore, NCDEQ Jennifer Tufts, EPA Matt Louth, CH2M HILL APPROVED FOR PUBLIC RELEASE: DISTRIBUTION UNLIMITED Naval Facilities Engineering Systems Command Mid-Atlantic Norfolk, Virginia Final Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina January 2024 Naval Facilities Engineering Systems Command Naval Facilities Engineering Systems Command Mid-Atlantic Norfolk, Virginia Final Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina January 2024 Prepared for NAVFAC Mid-Atlantic by CH2M HILL, Inc. 13024 Ballantyne Corporate Place, Suite 450 Charlotte, NC 28277 NC Engineering License No. F-0699 Contract N62470-19-D-9000 CTO-5246 N4008521F ommand ch2Aft· SM 231003104902_1EC6A744 iii Acronyms and Abbreviations > greater than < less than µg/L microgram(s) per liter µg/m3 microgram(s) per cubic meter µmol/L micromole(s) per liter AF attenuation factor ARG active remediation goal AST aboveground storage tank bgs below ground surface cells/mL cells per milliliter CH2M CH2M HILL, Inc., a wholly owned subsidiary of Jacobs COC constituent of concern CSM conceptual site model DCE dichloroethene DHC Dehalococcoides sp DNAPL dense nonaqueous phase liquid DO dissolved oxygen DP differential pressure EPA U.S. Environmental Protection Agency ERD enhanced reductive dechlorination ft/day foot(feet) per day ft/ft foot(feet) per foot FY fiscal year HDD horizontal directionally drilled inch wc inch of water column ISCO in situ chemical oxidation LCH lower Castle Hayne LF/WV low flow/well volume LTM long-term monitoring LUC land use control MCB Marine Corps Base MCH middle Castle Hayne MCL maximum contaminant level mg/L milligram(s) per liter LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 iv 231003104902_1EC6A744 MK Mann-Kendall mV millivolt(s) NA not applicable NAIP natural attenuation indicator parameter NCGWQS North Carolina Groundwater Quality Standards NCSWQS North Carolina Surface Water Quality Standards NRWQC National Recommended Water Quality Criteria ORP oxidation-reduction potential OU operable unit PCE tetrachloroethene PIL project indicator level RA remedial action ROD Record of Decision SVS sewer ventilation system TCE trichloroethene TCR target cancer risk THQ target hazard quotient TOC total organic carbon UCH upper Castle Hayne UST underground storage tank VC vinyl chloride VI vapor intrusion VIMS vapor intrusion mitigation system VISL Vapor Intrusion Screening Level VOC volatile organic compound ZVI zero-valent iron 231003104902_1EC6A744 5 1 Introduction Long-term monitoring (LTM), which includes groundwater performance monitoring during active treatment and continued operation and monitoring of the vapor intrusion mitigation systems (VIMS) and sewer ventilation system (SVS), is required at Installation Restoration Program Operable Unit (OU) 15 – Site 88 at Marine Corps Base (MCB) Camp Lejeune, in Onslow County, North Carolina, as a component of the remedy specified in the Site 88 Record of Decision (ROD) (CH2M, 2019). The purpose of the LTM program at Site 88 is to monitor changes in constituent of concern (COC) concentrations, assess the performance effectiveness of the selected remedy and progress toward achieving active remediation goals (ARGs) and current groundwater standards1, and to inform when active treatment is complete. This LTM report presents the Fiscal Year (FY) 2022 LTM data to accomplish the following: • Summarize the conceptual site model (CSM) • Evaluate the effectiveness of the selected remedy • Evaluate whether concentrations indicate the potential for a complete vapor intrusion (VI) pathway for buildings within 100 feet of the groundwater plume • Present the results of the VIMS and SVS operation and maintenance and quarterly performance monitoring at Buildings 37, 43, and HP57 • Generate conclusions and recommendations 2 Background MCB Camp Lejeune (the Base) is a 156,000-acre facility located in Onslow County, North Carolina (Figure 1). The mission of Marine Corps Installations East – MCB Camp Lejeune (MCB Camp Lejeune) is to maintain combat-ready units for expeditionary deployment. The Base provides housing, training facilities, and logistical support for Fleet Marine Force Units and other assigned units. Site 88 is located within OU 15, on the Mainside area of MCB Camp Lejeune near the intersection of Post Lane and McHugh Boulevard (Figures 1 and 2). The site originated at former Building 25, which operated as a dry-cleaning facility from the 1940s to 2004, when the building was demolished. Five underground storage tanks (USTs) were installed on the northern side of the building to store dry-cleaning fluids, including Varsol, which was used until the 1970s and was replaced with tetrachloroethene (PCE). PCE was also stored in one aboveground storage tank (AST) in the same area as the USTs and spent PCE was reportedly disposed of in floor drains. In March 1995, self- contained dry-cleaning machines were installed in former Building 25, eliminating the need for bulk storage of PCE. The AST and USTs were removed in 1995 (OHM, 1996). 1 The current groundwater standards were identified as the more conservative of the North Carolina Groundwater Quality Standards and maximum contaminant levels at the time of the final ROD (CH2M, 2019). However, the most up-to-date standards are used to evaluate LTM data. LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 6 231003104902_1EC6A744 Site 88 was characterized under numerous investigations and studies beginning in 1996 which identified chlorinated volatile organic compound (VOC) and petroleum hydrocarbon contamination originating from former Building 25. These investigations concluded that dense nonaqueous phase liquid (DNAPL) migrated through an underground sewer system emanating from the former dry-cleaning facility and potentially leaked into the aquifer formation through compromised joints. A non-time-critical-removal action was conducted in 2005 in the source area to reduce VOC contaminant mass and mobility of PCE in soil. Soil mixing with zero-valent iron (ZVI) and clay was conducted within a 7,050 a cubic- yard area, and as a result, PCE concentrations in the soil were reduced by more than 99 percent. From 2007 to 2011, Site 88 was included in the phased Basewide VI evaluation that was conducted to determine whether a complete or significant exposure pathway for VI existed in buildings. Several buildings were evaluated, and VI was identified as a pathway of concern at Building 3B. As a result, a VIMS was installed in Building 3B in 2012. Although VI was not a significant pathway of concern at Buildings 3, 37, and 43, VIMS were also installed in these buildings as a precautionary measure because there was a potential for indoor air concentrations to exceed the vapor intrusion screening levels (VISLs) should VI occur in the future (AGVIQ/CH2M, 2009; CH2M, 2011b). In 2014, an additional VI investigation was conducted at Building HP57 that identified the sewer lines as a preferential pathway allowing PCE and trichloroethene (TCE) into indoor air. As a result, an SVS was installed in October 2016 to mitigate the VI pathway through the sewer line (CH2M, 2018). Performance monitoring of the VIMS at Buildings 3, 3B, 37, and 43, and SVS at Building HP57 has been conducted quarterly since startup to evaluate whether the VIMS or SVS is operating to effectively mitigate the VI pathway. Buildings 3 and 3B sustained damage from Hurricane Florence in September 2018 and were demolished in 2022. The site has been divided into three treatment zones (Figure 2): • Zone 1 is the initial source area (former Building 25) with COCs in groundwater from 5 to 60 feet below ground surface (bgs). • Zone 2 is downgradient from Zone 1 and includes COCs in groundwater from approximately 40 to 180 feet bgs. • Zone 3 is the most downgradient portion of the plume, with COCs in groundwater limited to approximately 40 to 60 feet bgs, likely because of a higher transmissivity of groundwater in the upper Castle Hayne (UCH) aquifer. The ROD was signed in 2019, documenting the selected remedy as follows (CH2M, 2019): • Zone 1: enhanced reductive dechlorination (ERD) via vertical injection wells to treat areas with DNAPL and groundwater with high COC concentrations near the source area. • Zone 2: in situ chemical oxidation (ISCO) via horizontal directionally drilled (HDD) injection and vertical groundwater extraction/recirculation wells to treat areas with suspected DNAPL and groundwater with high COC concentrations downgradient from the source area. • Zone 3: biobarrier via vertical injection wells to treat the furthest downgradient groundwater contamination. • Operation and monitoring of the VIMS at Building 3B, and the SVS at Building HP57 was conducted to mitigate the VI pathway. As a precautionary measure, operation and monitoring of VIMS at Buildings 3, 37, and 43 will mitigate the potential for the VI pathway to become significant in the future. As noted previously, Buildings 3 and 3B sustained damage from Hurricane Florence in September 2018 and were demolished in 2022. • Land use controls (LUCs) prohibiting the installation of water supply wells and preventing the unauthorized use of or exposure to contaminated groundwater and soil gas requiring the need to evaluate the potential for VI before the construction of new buildings or modifications to existing buildings, and restricting land use and intrusive activities in the ZVI soil mixing area. LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 231003104902_1EC6A744 7 Treatability studies were implemented in Zones 1 and 3 to further evaluate the potential effectiveness of ERD as a treatment alternative and to obtain additional design parameters needed for full-scale implementation. Baseline sampling was completed at select monitoring wells in January and February 2019, and the first round of injections were completed in June 2019. During the first round of injections, 21,378 gallons of LactOil were injected into 99 injection wells in Zone 1, and 3,218 gallons of LactOil were injected in 14 injection wells in Zone 3. The second round of injections began in March 2021. Injections in Zone 3 were completed in June 2021, similar to the injection event in June 2019 (3,297 gallons of LactOil injected in 14 injection wells); however, injections in Zone 1 were discontinued in July 2021 after 8,123 gallons were injected due to challenges with daylighting (CH2M, 2022). Daylighting was later attributed to several compromised storm sewers and repairs were conducted in June 2023 by installing cured-in-place pipe lining which is anticipated to mitigate daylighting during future injections. The next round of injections is planned for FY 2024. Implementation of the Remedial Action (RA) in Zone 2 was initiated in August 2020 and included the installation of nine HDD injection wells and five vertical groundwater extraction/recirculation wells, and the mobilization of an injection system. The first round of permanganate injections (approximately 4,404,100 gallons of 2 percent sodium permanganate solution) and recirculation of one pore volume of groundwater (approximately 23,398,300 gallons) was completed in June 2022. The next round of injections is planned for FY 2024/2025. 3 Conceptual Site Model The current CSM for Site 88 (Table 1 and Figure 3) is based on data from previous investigations and the RA. Table 1. Conceptual Site Model Site Name Site 88 – Former Base Dry Cleaners Site Location Site 88 is located near the intersection of Post Lane and McHugh Boulevard in the Mainside area of MCB Camp Lejeune (Figure 2). Site History Former Building 25 operated as a dry-cleaning facility beginning in the 1940s. Five USTs were installed on the north side of the building to store dry-cleaning fluids. Initially, Varsol was used in dry-cleaning operations at former Building 25. Varsol’s use was discontinued in the 1970s and it was replaced with PCE. PCE was stored in one 150-gallon AST adjacent to the north wall of former Building 25, in the same vicinity as the USTs. PCE was reportedly stored in the AST from the 1970s until the mid-1980s. During this time, PCE that was used in the dry-cleaning process was reportedly disposed of in floor drains. In March 1995, self-contained dry-cleaning machines were installed in former Building 25, eliminating the need for bulk storage of PCE, and the USTs and AST were removed. The dry-cleaning operations ceased in January 2004, and the building was demolished to slab in August 2004. North of the former Building 25 were several vaulted steam conveyance pipelines, below-grade concrete vaults, and shallow drainage channels. Steam condensate was directed away from the former Building 25 by shallow drainage channels that discharge into storm drains on the north side of the building. Wastewater was also discharged to the Base wastewater collection system located on the northern side of the building. Each subsurface conveyance system trends to the west or northwest upon leaving former Building 25. Current Use The site is currently used for office buildings, barracks, roads, and parking areas, with smaller areas of maintained grass. Site Conditions Physical Characteristics Site 88 occupies approximately 286 acres (inclusive of the extent of land use controls) and is generally flat. Site 88 is primarily covered by asphalt or concrete, with smaller areas of maintained grass between the buildings, roads, and parking areas; therefore, infiltration is limited at the site and the surface water drainage is conveyed through a series of storm sewers, located along the roads, to the New River, which is located approximately 3,000 feet to the west. An underground sewer system emanates from the former dry-cleaning facility, connecting several of the buildings in this area. Beaverdam Creek is the closest surface water to Site 88, located approximately 1,500 feet to the northeast. LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 8 231003104902_1EC6A744 Table 1. Conceptual Site Model Site Conditions (continued) Geology and Hydrogeology Subsurface conditions consist primarily of fine sand and silt, underlain by thin discontinuous layers of clayey silt and silty clay representing a discontinuous confining unit (Belgrade Formation). Beneath the Belgrade Formation, sands with increasing grain size with depth are dominant, with lesser amounts of shells, limestone, and silts and clays. Relevant groundwater beneath Site 88 includes the surficial and underlying Castle Hayne aquifer. The Castle Hayne aquifer is confined by the Beaufort confining unit at approximately 180 feet bgs. The aquifer depth intervals are as follows: surficial aquifer (5 to 25 feet bgs), UCH aquifer (25 to 75 feet bgs), middle Castle Hayne (MCH) aquifer (75 to 125 feet bgs), and the lower Castle Hayne (LCH) aquifer (125 to 180 feet bgs). Groundwater flow in the surficial aquifer is highly variable and is likely influenced by differing hydraulic conductivity of the undifferentiated sediments. The UCH and MCH aquifers flow to the west and northwest toward the New River. Based on the limited data, the inferred groundwater flow direction in the LCH is to the southwest. In the surficial aquifer, the average hydraulic conductivity is 4.1 feet per day (ft/day) (CH2M, 2008), the average gradient is 0.030 feet/foot (ft/ft), and the average groundwater velocity is 0.617 ft/day. In the UCH aquifer, the average hydraulic conductivity is 14.7 ft/day (CH2M, 2008), the average gradient is 0.0027 ft/ft, and the average groundwater velocity is 0.198 ft/day. In the MCH aquifer, the average hydraulic conductivity is 7.9 ft/day and the seepage velocity is approximately 0.05 ft/day (CH2M, 2008). There is a downward gradient of 0.164 ft/ft between the surficial and UCH aquifers. Groundwater elevation from the two surficial aquifer monitoring wells (IR88-MW03 and IR88-MW58) near Buildings 37 and 43 VIMS historically range between 5 ft bgs and 12 ft bgs and are used to determine if a high water table is affecting the VIMS performance. Source Areas Former dry-cleaning facility with associated former AST/USTs and DNAPL. COCs (CH2M, 2019) Groundwater: VOCs (PCE, TCE, cis-1,2-dichloroethene [cis-1,2-DCE], vinyl chloride [VC], benzene, and naphthalene) Soil Gas: VOCs (PCE, TCE, and VC) Nature and Extent Groundwater contamination in the surficial aquifer extends from the source area (former Building 25), west (downgradient) across McHugh Boulevard and is approximately 12 acres. The plume extends across McHugh Boulevard, following the former sewer lines (Figure 3). Contaminants in the surficial aquifer include PCE, TCE, cis-1,2-DCE, and VC. The footprint of the daughter products is smaller and generally contained within that of PCE. Petroleum-related compounds, including benzene and naphthalene, have also been detected in groundwater samples collected within the surficial aquifer above the current groundwater standards. The extent of petroleum-related compounds in the surficial aquifer is limited to the ZVI soil mixing area. Groundwater contamination in the UCH aquifer extends northwest from former Building 25 and is approximately 26 acres. The vertical extent of impacts within the UCH aquifer ranges from 25 to approximately 60 feet bgs. Contaminants in the UCH aquifer include PCE, TCE, cis-1,2-DCE, and VC. The footprint of the daughter products generally matches the PCE footprint. A dilute plume of petroleum-related hydrocarbons (benzene and naphthalene) was detected across a larger area in the UCH aquifer than the surficial aquifer above the current groundwater standards, originating near the former UST tank basin, and extending downgradient. Groundwater contamination in the MCH aquifer extends 700 feet downgradient of former Building 25 and is approximately 25 acres. The vertical extent of impacts within the MCH aquifer ranges from 60 to approximately 125 feet bgs. PCE, TCE, cis-1,2-DCE, and VC were the most prevalent contaminants in the MCH aquifer. Groundwater impacts in the LCH aquifer are located approximately 400 feet northwest of former Building 25 and span approximately 4 acres northeast to southwest. The vertical extent of impacts within the LCH aquifer ranges from 125 to approximately 180 feet bgs. Similar to the MCH aquifer, PCE, TCE, cis-1,2-DCE, and VC were the most prevalent compounds in the LCH aquifer. It is known that contamination is present outside of the active treatment zones; however, one of the current objective of LTM is for performance monitoring to inform when active treatment is complete. The monitoring well network will be re-evaluated when the remedy transitions to MNA to include the full extent of contamination. DNAPL has been observed within the surficial aquifer to the south of the soil mixing area in Zone 1. Additionally, groundwater concentrations of PCE in the UCH and MCH aquifers have been observed in Zone 2 greater than 1 percent of the solubility of PCE (approximately 200 milligrams per liter [mg/L]) with pre-treatment concentrations of 98 mg/L and 98.1 mg/L, respectively, which suggests the presence of DNAPL (Kueper et al., 2014). LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 231003104902_1EC6A744 9 Table 1. Conceptual Site Model Nature and Extent (continued) Soil gas impacts (PCE, TCE, and/or VC) were identified at Buildings 3, 3B, 37, 43, and HP57 within the footprint of the groundwater plume. Indoor air data were collected during Phase I, II, and III Base-wide VI Evaluations at Buildings 3, 3B, 37, and 43 (CH2M, 2009, 2011a); and during the 5-year Update Monitoring at Building HP-57 (CH2M, 2015). PCE and TCE were detected above risk-based VISLs in indoor air at Buildings 3B and HP57. Current Migration Pathways •Potential contaminant migration pathways are DNAPL dissolution into groundwater,leaching from vadose zone soils to groundwater and soil gas, vertical and horizontalmigration in groundwater through advection and dispersion, and volatilization fromgroundwater into soil gas. •The potential for complete VI pathways and associated indoor air concentrations wouldneed to be evaluated if new construction were to take place or if there are buildingchanges that impact the slab or foundation, or land use changes occur within 100 feet2 of the surficial aquifer groundwater VOC plume. Potentially Unacceptable Risks (CH2M, 2019) Future Resident: Ingestion of, dermal contact with, and inhalation of VOCs from groundwater (PCE, TCE, cis-1,2-DCE, and VC). Future Construction Worker: Dermal exposure and inhalation of groundwater vapor in an excavation (cis-1,2-DCE and VC) and soil gas (PCE, TCE, and VC). Although benzene and naphthalene in groundwater do not contribute to unacceptable future risk, each constituent is present at concentrations exceeding NCGWQS in Zones 1 and 2, and therefore are included as COCs. Remedial Action Objectives and Remedial Action (CH2M, 2019) Remedial Action Objectives •Restore groundwater quality to meet North Carolina Department of EnvironmentalQuality (NCDEQ) and federal primary drinking water standards based on theclassification of the aquifer as a potential source of drinking water (Class GA or ClassGSA) under 15A North Carolina Administrative Code 02L.0201. •Reduce groundwater contaminant source mass to the maximum extent practicablewithin a reasonable timeframe to inhibit migration of COCs to the New River. •Prevent human ingestion of and contact with groundwater containing COCs atconcentrations above NCGWQS or federal MCLs, whichever is more stringent. •Prevent exposure to COCs in groundwater and soil gas during construction, and throughthe VI pathway that could result in risks to human health above target risk levels. •Restrict intrusive activities and prevent residential use near the ZVI soil mixing treatmentarea. Remedial Action •Zone 1 (surficial and UCH aquifers): ERD via vertical injection wells (injection events in2019 and 2021 and next event planned for 2024) and performance monitoring •Zone 2 (UCH, MCH, and LCH aquifers): ISCO via horizontal injection wells (injection eventin 2021/2022 and next event planned for 2025) and performance monitoring •Zone 3 (UCH aquifer): Biobarrier via vertical injection wells (injection events in 2019 and2021 and next event planned for 2024) and performance monitoring •VIMS in Buildings 3, 3B, 37, and 43 and an SVS in the adjacent sewer system servingBuilding HP57 (Note: Buildings 3 and 3B were demolished in June 2022) •Monitored natural attenuation for groundwater following active treatment3 •LUCs (2020 to present): −Aquifer Use Control (1,000 feet)−Intrusive Activities Control (Groundwater and Soil Gas)−Industrial/Non-Industrial Use Control (VI)−Intrusive Activities Control (Soil)−Non-Industrial Use Control (Soil) 2 The distance of 100 feet was conservatively used because it is United States Environmental Protection Agency‘s (USEPA’s; 2015) default inclusion screening distance for all building types but is likely overly conservative for Department of Defense industrial buildings (Venable et. al, 2015). 3 The remedial action is focused on elevated concentrations in each zone, in accordance with the Remedial Design. It is acknowledged thatcontamination is present outside of the active treatment areas; however, the current objective for LTM is for performance monitoring to inform when active treatment is complete. The monitoring well network will be re-evaluated when the remedy transitions to MNA to include the full extent of contamination. LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 10 231003104902_1EC6A744 4 Performance Monitoring This section presents the FY 2022 performance monitoring activities, describes how data were evaluated, and presents the analytical results and trends for groundwater in Zones 1, 2, and 3. 4.1 Activities FY 2022 LTM activities (groundwater gauging, sampling, and data management) were conducted by Meadows Consulting Management and Planning (Meadows) in accordance with the FY 2022 Sampling and Analysis Plan (CH2M, 2021b) except for the deviations shown in Attachment 1. Semiannual performance monitoring was conducted in February/March 2022 and August 2022. Table 2 presents the sampling locations, methods, and frequencies of the monitoring wells that were included in FY 2022 sampling. Groundwater gauging information and water quality parameters are provided in Attachments 1 and 2. Potentiometric surface maps of the surficial, UCH, and MCH aquifers are presented on Figure 4. Groundwater samples were collected using either low-flow or passive sampling (Hydrasleeves) techniques. The zone-specific sampling was conducted as follows: • In Zone 1, groundwater samples collected from monitoring wells were analyzed for PCE, TCE, cis-1,2-DCE, VC, benzene, and naphthalene. Samples from select wells were also analyzed for natural attenuation indicator parameters (NAIPs), which includes alkalinity, chloride, methane, ethane, ethene, sulfate, sulfide, nitrate, nitrite, and total organic carbon (TOC), and microbial populations (Dehalococcoides sp [DHC] and functional genes). • In Zone 2, groundwater samples collected from monitoring wells screened in the UCH aquifer were sampled and analyzed for PCE, TCE, cis-1,2-DCE, and VC; samples from select UCH aquifer wells were also analyzed for benzene and naphthalene. Groundwater samples collected from monitoring wells screened in the MCH aquifer were sampled and analyzed for PCE, TCE, cis-1,2-DCE, and VC. • In Zone 3, groundwater samples collected from monitoring wells were sampled and analyzed for PCE, TCE, cis- 1,2-DCE, and VC; samples from select monitoring wells were also analyzed for NAIPs and microbial populations. Analytical results are discussed in Section 4.3. Figures 5 through 7 identify the purpose of each well before sampling in FY 2022 as referenced in Table 2. Table 2. Sampling Locations, Methods, and Frequencies Monitoring Well Aquifer Sampling Method Monitoring Frequency Analytical Group Well Location Zone 1 – ERD Performance Monitoring IR88-MW02 Surficial LF/WV Semiannually VOCsa, NAIPs, microbial populations Within treatment area IR88-MW06 Surficial LF/WV Semiannually VOCsa, NAIPs, microbial populations Downgradient of treatment area IR88-MW25 Surficial LF/WV Semiannually VOCsa, NAIPs, microbial populations Upgradient of treatment area IR88-MW58 Surficial LF/WV Semiannually VOCsa, NAIPs, microbial populations Sidegradient of treatment area IR88-MW02IW UCH LF/WV Semiannually VOCsa, NAIPs, microbial populations Within treatment area IR88-MW05IW UCH LF/WV Semiannually VOCsa, NAIPs, microbial populations Within treatment area IR88-MW30IW UCH LF/WV Semiannually VOCsa, NAIPs, microbial populations Within treatment area IR88-MW70UCH UCH LF/WV Semiannually VOCsa, NAIPs, microbial populations Upgradient of treatment area LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 231003104902_1EC6A744 11 Table 2. Sampling Locations, Methods, and Frequencies Monitoring Well Aquifer Sampling Method Monitoring Frequency Analytical Group Well Location IR88-RABITTMW1 UCH LF/WV Semiannually VOCsa, NAIPs, microbial populations Within treatment area Zone 2 – ISCO Performance Monitoring IR88-MW54IW UCH HS Semiannually VOCsb Within treatment area IR88-MW56IW UCH HS Semiannually VOCsb Within treatment area IR88-MW39MP-A UCH LF/WV Semiannually VOCsb Within treatment area IR88-MW18DW MCH HS Semiannually VOCsb Within treatment area IR88-MW33DW MCH HS Semiannually VOCsb Within treatment area IR88-MW45DW3 MCH HS Semiannually VOCsb Within treatment area IR88-MW47DW3 MCH HS Semiannually VOCsb Within treatment area IR88-MW39MP-B MCH LF/WV Semiannually VOCsb Within treatment area IR88-MW39MP-C MCH LF/WV Semiannually VOCsb Within treatment area Zone 3 –Biobarrier Performance Monitoring IR88-MW15IW UCH LF/WV Semiannually VOCsc, NAIPs, microbial populations Upgradient of Biobarrier IR88-MW20IW UCH LF/WV Semiannually VOCsc, NAIPs, microbial populations Downgradient IR88-MW21IW UCH HS Semiannually VOCsc Sidegradient of Biobarrier IR88-MW22IW UCH LF/WV Semiannually VOCsc, NAIPs, microbial populations Within Biobarrier IR88-MW48IW UCH LF/WV Semiannually VOCsc, NAIPs, microbial populations Within Biobarrier IR88-MW49IW UCH HS Semiannually VOCsc Sidegradient of Biobarrier IR88-MW63UCH UCH HS Semiannually VOCsc Downgradient IR88-MW64UCH UCH LF/WV Semiannually VOCsc, NAIPs, microbial populations Upgradient of Biobarrier IR88-MW65UCH UCH LF/WV Semiannually VOCsc, NAIPs, microbial populations Upgradient of Biobarrier IR88-MW66UCH UCH LF/WV Semiannually VOCsc, NAIPs, microbial populations Downgradient of Biobarrier IR88-MW67UCH UCH LF/WV Semiannually VOCsc, NAIPs, microbial populations Downgradient of Biobarrier IR88-MW68UCH UCH HS Semiannually VOCsc Downgradient IR88-MW69UCH UCH HS Semiannually VOCsc Downgradient a Zone 1 VOCs include PCE, TCE, cis-1,2-DCE, VC, benzene, and naphthalene. b Zone 2 VOCs include PCE, TCE, cis-1,2-DCE, and VC. Monitoring wells IR88-MW54IW and IR88-MW56IW were also sampled for benzene and naphthalene. c Zone 3 VOCs include PCE, TCE, cis-1,2-DCE, and VC. LF/WV = low flow/well volume HS = Hydrasleeve LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 12 231003104902_1EC6A744 4.2 Data Evaluation An evaluation of the FY 2022 data was completed as described in the following: • COC concentrations were compared to the current groundwater standards, which are the NCGWQS (April 1, 2022) and ARGs, to monitor progress toward meeting cleanup levels (Table 3 and Attachments 3a and 3b). Concentration trends are evaluated using FY 2022 and historical analytical data (Attachment 5). • Surficial aquifer data were screened against the Non-Residential EPA VISLs4 to evaluate whether concentrations indicate the potential for a complete VI pathway for buildings within 100 feet of the groundwater plume (Table 3 and Attachment 3a). The Non-Residential VISLs were used for screening because there are no residential buildings within 100 feet of an LTM well. • Performance monitoring data in Zones 1, 2, and 3 were compared to the active treatment milestones presented in the Remedial Design (RD), as outlined below (CH2M, 2020). – Zone 1:  Plume stability o Mann-Kendall (MK) statistical analysis was performed to evaluate the significance of COC concentration trends within Zone 1 since baseline sampling in 2019. A summary of the MK statistical method and results are included in Attachment 4.  Mass reduction o Performance monitoring data were compared to baseline results and the ARGs (CH2M, 2020) to assess mass reduction. The ARGs were defined in the RD as the concentration for each COC at which predictive modeling indicates natural attenuation to the MCLs within 100 years (Table 3, Attachments 3a and 3b).  Elimination of DNAPL to the extent practicable, based on groundwater concentrations greater than 1 percent of solubility (Kueper et al., 2014). The solubility of PCE is approximately 200 milligrams per liter; therefore, a PCE concentration greater than 2,000 micrograms per liter (µg/L) is considered indicative of DNAPL.  Sustained conditions favorable for ERD as follows (Attachments 2 and 3): o Increased degradation daughter product concentrations (and subsequent decrease). o Presence of favorable microbial populations (greater than 1,000 cells per milliliter [cells/mL]) and microbial functional genes (detectable concentrations). o NAIPs and water quality parameters indicating favorable aquifer conditions for ERD, as defined by project indicator levels (PILs) in the FY 2022 Sampling and Analysis Plan (CH2M, 2021b). – Zone 2:  Mass reduction o Performance monitoring data were compared to baseline results and the ARGs (CH2M, 2020) to assess mass reduction, as described above (Table 3, Attachments 3c and 3d). o Elimination of DNAPL to the extent practicable, based on groundwater concentrations greater than 1 percent of solubility, or 2,000 µg/L, as described above. – Zone 3:  Plume stability 4 Non-Residential EPA VISLs for groundwater are based on Target Cancer Risk=1x10-6 and Target Hazard Quotient=0.1 generated using the online VISL calculator downloaded February 3, 2022 (EPA, 2023). LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 231003104902_1EC6A744 13 o MK statistical analysis was performed to evaluate the significance of COC concentration trends within Zone 3 since the baseline sampling in 2019 to the most recent sampling in FY 2022. A summary of the MK statistical method and results are included in Attachment 4. Wells were grouped with respect to their location and the rationale for inclusion in the LTM to evaluate trends as follows:  COC concentrations at the most upgradient monitoring well (IR88-MW15IW) were used to evaluate when treated groundwater migrates from Zones 1 and 2 to Zone 3.  COC concentrations at the monitoring wells transecting the biobarrier (IR88-MW64UCH, IR88-MW22IW, IR88-MW66UCH, IR88-MW65UCH, IR88-MW48IW, and IR88-MW67UCH) were used to evaluate the effectiveness of the biobarrier.  COC concentrations at sidegradient monitoring wells (IR88-MW21IW and IR88-MW49IW) were used to evaluate the flow of groundwater around the biobarrier.  COC concentrations at the most downgradient monitoring wells (IR88-MW20IW, IR88- MW63UCH, IR88-MW68UCH, and IR88-MW69UCH) were used to establish long-term trends to evaluate when treated groundwater migrates from the biobarrier to these downgradient wells.  Sustained favorable conditions for ERD as described in Zone 1 (Attachments 2 and 3). • Analytical results from downgradient monitoring wells (IR88-MW20IW, IR88-MW63UCH, IR88-MW68UCH, and IR88-MW69UCH) were also compared to 10 times the Human Health North Carolina Surface Water Quality Standards (NCSWQS) for fish consumption (September 1, 2022) to determine the potential for groundwater to affect surface water (Attachment 3f). If a Human Health NCSWQS was not available for an analyte, the COC was compared to 10 times the EPA National Recommended Water Quality Criteria (NRWQC) for fish consumption (June 2015). If a NRWQC was not available for an analyte, the COC was compared to 10 times the North Carolina Protective Values for Surface Water for fish consumption (September 1, 2022) (Table 3). Table 3. Comparison Criteria COCa ARG (µg/L)b Current Groundwater Standard (µg/L)c Non-Residential EPA VISL (µg/L)d 10 times the Human Health NCSWQS (µg/L)e PCE 112 0.7 24.2 33 TCE 132 3 2.18 300 cis-1,2-DCE 1,184 70 105 7,200 VC 61 0.03 2.45 24 Benzene -- 1 6.93 510 Naphthalene -- 6 20.1 -- a Zone 1 COCs include PCE, TCE, cis-1,2-DCE, VC, benzene, and naphthalene. Zone 2 COCs include PCE, TCE, cis-1,2-DCE, and VC for all aquifers, and additionally benzene and naphthalene in the UCH aquifer only. Zone 3 COCs include PCE, TCE, cis-1,2-DCE, and VC. b ARGs are based on the concentration for each COC at which predictive modeling indicates attenuation to the MCLs within 100 years. c Current groundwater standard is the NCGWQS (April 1, 2022). d Non-residential VISL for groundwater are based on Target Cancer Risk (TCR)=1x10-6 and Target Hazard Quotient (THQ)=0.1 (EPA, 2023). This conservative groundwater VISL is used to trigger a desktop evaluation of buildings within 100 feet of surficial groundwater exceedances. e Ten times the Human Health NCSWQS for fish consumption (September 1, 2022) to determine the potential for groundwater to affect surface water. There is no Human Health NCSWQS or EPA NRWQC for fish consumption (June 2015) for cis-1,2-DCE; therefore, results were compared to 10 times the North Carolina Protective Values for Surface Water for fish consumption (September 1, 2022). -- = Screening criteria not available LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 14 231003104902_1EC6A744 4.3 Analytical Results and Trends Results of laboratory analyses from groundwater monitoring, MK trend evaluation, historical data, COC trends, NAIP trends, and molarity plots are provided in Attachments 3 through 8, respectively, and are discussed by treatment zone herein. 4.3.1 Zone 1 4.3.1.1 Surficial Aquifer Table 4 presents a summary of the COCs detected in the surficial aquifer and the frequency of detections with concentrations that exceeded their respective ARGs and/or current groundwater standards in March 2022 and August 2022. Figure 8 presents results of PCE, TCE, cis-1,2-DCE, VC, benzene, naphthalene, and DHC in Zone 1 surficial aquifer groundwater in molar concentrations, which allows for a direct comparison of parent compounds (PCE and TCE) and daughter products (cis-1,2-DCE and VC) to better evaluate biological transformation and remedy effectiveness. Trends for benzene and naphthalene are presented on Figure 9. Key observations are discussed below. Groundwater samples were not collected from IR88-MW05 and IR88-MW60 in February 2022 and August 2022 because viscous fluid (suspected emulsified vegetable oil) was observed in the monitoring wells. Groundwater Standards • PCE, TCE, cis-1,2-DCE, VC, and/or benzene concentrations exceeded their groundwater standards in March 2022 and August 2022 at IR88-MW02, IR88-MW25, and IR88-MW58. • Benzene concentrations at IR88-MW02, located downgradient of the UST excavation area (Figure 9), exceeded the groundwater standard in March 2022 (2.7 µg/L) and August 2022 (3.5 µg/L). Naphthalene was not detected. Table 4. Summary of Analytical Results – Zone 1 Surficial Aquifer Analyte ARGs (µg/L)a Current Groundwater Standard (µg/L)b March 2022 August 2022 Location of Maximum Concentration in August 2022 (µg/L) Frequency of Detection Frequency of Exceedance of ARG Frequency of Exceedance of Current Groundwater Standard Frequency of Detection Frequency of Exceedance of ARG Frequency of Exceedance of Current Groundwater Standard PCE 112 0.7 3/4 1/4 3/4 3/4 1/4 3/4 IR88-MW25 590 J TCE 132 3 3/4 0/4 3/4 3/4 0/4 3/4 IR88-MW58 20 J cis-1,2-DCE 1,184 70 3/4 0/4 2/4 3/4 0/4 1/4 IR88-MW58 240 VC 61 0.03 2/4 1/4 2/4 3/4 1/4 2/4 IR88-MW02 77 Benzene -- 1 1/4 NA 1/4 1/4 NA 1/4 IR88-MW02 3.5 Naphthalene -- 6 0/4 NA 0/4 0/4 NA 0/4 NA NA a ARGs are based on the concentration for each COC at which predictive modeling indicates attenuation to the MCLs within 100 years. b Current groundwater standards are the NCGWQS (April 1, 2022). -- = Screening criteria not available J = Analyte present, value may or may not be accurate or precise NA = not applicable LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 231003104902_1EC6A744 15 VISLs • PCE, TCE, cis-1,2-DCE, and VC concentrations exceeded the Non-Residential EPA VISLs in March 2022 and August 2022. PCE and TCE concentrations exceeded their VISL (24.2 μg/L and 2.18 μg/L, respectively) at IR88-MW02, IR88-MW25, and IR88-MW58. Cis-1,2-DCE concentrations exceeded the VISL (105 μg/L) at IR88- MW58. VC concentrations exceeded the VISL (2.45 μg/L) at IR88-MW02 and IR88-MW58 (Figure 8 and Attachment 3a). IR88-MW58 is within 100 feet of Building 43, which has an operational VIMS as discussed further in Section 5. Active Treatment Milestones • MK statistical analysis indicates all COC concentrations are stable except for cis-1,2-DCE, which is decreasing in IR88-MW02. Trends are limited by the number of data points and will continue to be evaluated from year to year. • The PCE concentration at upgradient monitoring well IR88-MW25 (660 µg/L in March 2022 and 590 J µg/L in August 2022) and the VC concentration at treatment area monitoring well IR88-MW02 (97 µg/L in March 2022 and 77 µg/L in August 2022) exceeded their ARGs. The area at upgradient monitoring well IR88- MW25 may need to be incorporated into the treatment area for future injection events. PCE and TCE concentrations at sidegradient monitoring well IR88-MW58 exceeded the ARG in September 2021; however, COC concentrations did not exceed the ARG in March 2022 and August 2022. • The maximum PCE concentration during this reporting period was 660 µg/L, which is less than 1 percent of its solubility, suggesting that DNAPL is not present in the surficial aquifer in Zone 1. • Conditions favorable for ERD are being sustained at IR88-MW02 (Figure 8, Attachments 3a, 4a, and 8), which is within the treatment zone as follows: – PCE, cis-1,2-DCE, and VC concentrations are less than in 2019 (Attachment 6). Between January 2019 and August 2022, the total molar VOC concentration has been reduced by 49 percent. These results indicate that reduction is occurring, and the remedy is working. – Prior to injections, the DHC concentration was 0.3 cells/mL. After the first injection event, the DHC concentration increased to 148 cells/mL and then gradually decreased to 8.7 cells/mL in August 2022. These results suggest that DHC are present, but not at ideal levels to support biotic degradation of COCs. Other dechlorinating bacteria may be present. – Aquifer conditions were favorable for ERD based on the key NAIPs and water quality parameters (Table 5):  The dissolved oxygen (DO) concentration was less than 1 mg/L and the ORP was low (ranging from -161 millivolts [mV] to 25 mV), which indicates anaerobic conditions.  Ferrous iron concentrations were 3 mg/L in March 2022 and 7 mg/L in August 2022, indicative of iron reducing conditions, which is favorable for reductive dechlorination.  Methane concentrations were 9.5 mg/L in March 2022 and 11 mg/L in August 2022, up from a baseline concentration of 2.84 mg/L. This increase is indicative of methanogenic conditions, which is favorable for reductive dechlorination.  Ethane and ethene were detected in March 2022 (0.22 mg/L and 0.45 mg/L, respectively) and August 2022 (0.27 mg/L and 0.32 mg/L, respectively), which suggests complete transformation of COCs is occurring.  TOC concentrations were less than 10 mg/L during each performance monitoring event following injections possibly indicating inconsistent substrate distribution. LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 16 231003104902_1EC6A744 – Based on the results at IR88-MW25 and IR88-MW58, aquifer conditions outside of the treatment area were not affected by ERD injections. In August 2022, ORP remained elevated (94mV to 147 mV), pH remained low (4.10 standard units at IR88-MW25), and TOC concentrations were less than 2 mg/L. Table 5. Zone 1 NAIP and Water Quality Parameter Results for August 2022 Performance Monitoring Event Parameter NAIP Water Quality Parameter Alkalinity Chloride Methane Ethane Ethene Sulfate Sulfide TOC DHC Functional Genes Ferrous Iron pH DO ORP PILs for Favorable Condition > 50 mg/L > 1 mg/L > 0.5 mg/L Detectable Concentrations Detectable Concentrations < 20 mg/L and/or Decreasing Concentrations Detectable Concentrations > 20 mg/L > 1,000 cells/mL Detectable Concentrations > 1 mg/L 6 - 8 SU < 1 mg/L < 50 mV IR88-MW02 -- X X X X -- -- -- -- -- X -- X X IR88-MW06 X X -- -- -- X -- -- -- X -- X -- -- IR88-MW25 -- X -- -- -- -- -- -- -- -- X -- X -- IR88-MW58 X X -- -- -- X -- -- -- -- -- X -- -- IR88-MW02IW X X X -- X -- -- -- -- X X X X X IR88-MW05IW X X X X X X -- -- -- X X X X X IR88-MW30IW -- X X X X X -- -- X X X -- X X IR88-MW70UCH X X X X X X -- -- -- X X -- X X IR88-RABITTMW1 X X -- -- X -- -- -- X X X X X X X = PILs were met - = PILs were not met > = greater than < = less than 4.3.1.2 Upper Castle Hayne Aquifer Table 6 presents a summary of the COCs detected in samples collected from monitoring wells screened within the UCH aquifer and the frequency of detections with concentrations that exceeded their respective ARGs and current groundwater standards in March 2022 and August 2022. Figure 10 presents results of PCE, TCE, cis-1,2-DCE, VC, benzene, naphthalene, and DHC in Zone 1 UCH aquifer groundwater in molar concentrations, which allows for a direct comparison of parent compounds (PCE, TCE, cis-1,2-DCE) and daughter products (TCE, cis-1,2-DCE, and VC) to better evaluate biological transformation and thereby, remedy effectiveness. Trends for benzene and naphthalene concentrations are presented on Figure 11, although neither constituent exceeded current groundwater standards in the UCH aquifer in Zone 1. Key observations are discussed in this section. LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 231003104902_1EC6A744 17 Table 6. Summary of Analytical Results – Zone 1 UCH Aquifer Analyte ARGs (µg/L)a Current Groundwater Standard (µg/L)b March 2022 August 2022 Location of Maximum Concentration in August 2022 (µg/L) Frequency of Detection Frequency of Exceedance of ARG Frequency of Exceedance of Current Groundwater Standard Frequency of Detection Frequency of Exceedance of ARG Frequency of Exceedance of Current Groundwater Standard PCE 112 0.7 0/5 0/5 0/5 0/5 0/5 0/5 NA NA TCE 132 3 0/5 0/5 0/5 1/5 0/5 0/5 IR88-MW02IW 0.7 J cis-1,2-DCE 1,184 70 5/5 2/5 3/5 5/5 2/5 4/5 IR88-MW30IW 9,100 J VC 61 0.03 5/5 3/5 5/5 5/5 3/5 5/5 IR88-MW30IW 4,100 Benzene -- 1 2/5 NA 0/5 2/5 NA 0/5 IR88-05IW 0.96 J Naphthalene -- 6 0/5 NA 0/5 0/5 NA 0/5 NA NA a ARGs are based on the concentration for each COC at which predictive modeling indicates attenuation to the MCLs within 100 years. b Current groundwater standards are the NCGWQSs (April 1, 2022). -- = Screening criteria not available J = Analyte present, value may or may not be accurate or precise Groundwater Standards • Only cis-1,2-DCE and/or VC concentrations exceeded their current groundwater standards at all five monitoring wells during FY 2022 (Attachment 3b). • PCE concentrations were below laboratory detection limits in FY 2022 at all five monitoring wells. PCE decreased from a maximum concentration of 79 µg/L (IR88-MW02IW) in FY 2021 to below the laboratory detection limit in FY 2022. Active Treatment Milestones • MK trends are as follows: – PCE and TCE concentrations are decreasing and cis-1,2-DCE and VC concentrations are stable at IR88-MW02IW, which is in the treatment zone. – VC concentrations are stable and there is no trend for cis-1,2-DCE at IR88-MW05IW, which is in the treatment zone. – Both cis-1,2-DCE and VC concentrations are stable at IR88-MW30IW, which is in the treatment zone. – Cis-1,2-DCE concentrations are stable, and VC concentrations do not have a trend at IR88-RABITTMW1, which is in the treatment zone. – VC concentrations are decreasing and cis-1,2-DCE concentrations do not have a trend at IR88-MW70UCH, which is upgradient of the treatment zone. • Cis-1,2-DCE and/or VC concentrations exceeded their ARGs at three locations (IR88-MW05IW, IR88-MW30IW, and IR88-RABITTMW1). Cis-1,2-DCE concentrations are within one order-of-magnitude of the ARG; however, VC concentrations are up to two orders-of-magnitude greater than the ARG. LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 18 231003104902_1EC6A744 • The maximum cis-1,2-DCE concentration during this reporting period was 14,000 µg/L, which is less than one percent of its solubility (3,500 milligrams per liter), suggesting that DNAPL is not present in the UCH aquifer in Zone 1. • Conditions favorable for ERD are being sustained (Figure 10, Attachments 3b, 4b, and 8) as follows: – Except for IR88-MW30IW, where it increased from 88 micromoles per liter (µmol/L) in December 2019 to 353 µmol/L in September 2021, and then decreased to 160 µmol/L in August 2022, total molar concentrations decreased as follows:  At IR88-MW02IW, from 3.4 µmol/L in January 2019 (baseline) to 1.7 µmol/L in August 2022 (49 percent reduction).  At IR88-MW05IW, from 87.0 µmol/L in January 2019 to 18.1 µmol/L in August 2022 (80 percent reduction).  At IR88-RABITTMW1, from 144 µmol/L in January 2019 to 0.005 µmol/L in November 2020 after the first injection event. Following the second injection event in 2021, the total molar VOC concentration increased to 63 µmol/L and continued to increase to 101 µmol/L in August 2022. Overall, the total molar VOC concentration has decreased by 30 percent. – IR88-MW70UCH was installed to monitor conditions upgradient of the ERD injections; however, following the second injection event, PCE and cis-1,2-DCE concentrations were reduced to below current groundwater standards, and the VC concentration was reduced to below the ARG (6.2 µg/L in September 2021). In FY 2022, similar results were observed, except that the cis-1,2-DCE concentration was reduced to below the current groundwater standard, and the VC concentration was reduced by nearly an order-of-magnitude to 0.69 µg/L in August 2022. – Except for upgradient monitoring well IR88-MW70UCH, where it decreased by an order-of-magnitude from September 2021 to August 2022, the microbial populations increased following the 2021 injection event at IR88-MW05IW from 3,980 cells/mL in November 2020 to 13,600 cells/mL in March 2022, and at IR88-RABITTMW1 from 372 cells/mL in November 2020 to 84,800 cells/mL in March 2022. – Aquifer conditions were favorable for ERD based on the key NAIPs and water quality parameters (Table 5):  The DO concentration was less than 1 mg/L in March and August 2022 and the ORP was low (ranging from -113 mV at IR88-MW30IW to -2 mV at IR88-MW05IW in August 2022), indicating conditions favorable for a reductive pathway.  Ferrous iron concentrations were at least 1 mg/L (ranging from 2 to 7 mg/L in August 2022), indicative of iron reducing conditions, which is favorable for reductive dechlorination.  Sulfate concentrations ranged from 0.74 J mg/L at IR88-MW70UCH to 81 mg/L at IR88-RABBITMW1 in August 2022. Sulfate concentrations near or below 20 mg/L are considered favorable for reductive dechlorination. Sulfate concentrations at four of five wells were less than 20 mg/L, which is are considered favorable for reductive dechlorination. Conversely, the sulfate concentration at IR88- RABBITMW1 increased from 0.26 mg/L in November 2020 to 81 mg/L in August 2022.  Methane concentrations were greater than 0.5 mg/L at four of five wells in March and August 2022, suggesting that methanogenesis is actively occurring in the UCH aquifer.  Ethane was detected at IR88-MW05IW, IR88-MW30IW, and IR88-MW70UCH at concentrations ranging from 0.012 mg/L (IR88-MW05IW) to 0.33 J mg/L (IR88-MW30IW) in August. Ethene was detected at all five locations in March and August 2022 and ranged from 0.0021 J mg/L (MW70UCH) to 1.5 mg/L (IR88-MW30IW). The presence of ethene and ethane suggests complete transformation of COCs is occurring. LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 231003104902_1EC6A744 19  TOC concentrations at IR88-MW30IW decreased from 39 mg/L in September 2021 to 3.2 mg/L in August 2022. TOC concentrations at IR88-RABITTMW1 decreased from 330 mg/L in November 2020 before the second injection event to 1.2 mg/L in August 2022. At upgradient monitoring well IR88- MW70UCH, TOC concentrations remained relatively unchanged (less than 10 mg/L) before and after the second injection event. 4.3.2 Zone 2 Baseline samples were collected in November/December 2020 before permanganate injection and recirculation in Zone 2 commenced. Injection and recirculation began in May 2021 and was completed in June 2022. Therefore, samples collected during the February/March 2022 performance monitoring event represent dynamic groundwater conditions. However, at the time of the August 2022 performance monitoring event, injections and recirculation in all ten HDD wells were complete (HIW-1 through HIW-10, Figures 12 and 13). Due to ongoing operations at the time of the February/March 2022 sampling, the August 2022 sampling data presented herein will be the primary focus of evaluation for remedy effectiveness. Because injection and recirculation resulted in the movement of groundwater across the treatment zone, analytical results from the UCH and MCH aquifers are evaluated together. Permanganate was observed in IR88-MW56IW during the February/March 2022 event and was not sampled. IR88-MW39MP-A, IR88-MW39MP-B, and IR88-MW39MP-C were not sampled in August 2022 because they were abandoned in April 2022 and replaced in October 2022. Table 7 presents a summary of the COCs detected in groundwater samples collected from the UCH and MCH aquifers and the frequency of detections with concentrations that exceeded ARGs and/or current groundwater standards in February/March 2022 and August 2022. Figures 12 and 13 presents results of COCs in groundwater collected from Zone 2 UCH and MCH aquifers, respectively. Table 7. Summary of Analytical Results – Zone 2 UCH and MCH Aquifers Analyte ARGs (µg/L)a Current Groundwater Standard (µg/L)b February/March 2022 August 2022 Location of Maximum Concentration in August 2022 (µg/L) Frequency of Detection Frequency of Exceedance of ARG Frequency of Exceedance of Current Groundwater Standard Frequency of Detection Frequency of Exceedance of ARG Frequency of Exceedance of Current Groundwater Standard UCH Aquifer PCE 112 0.7 2/2 2/2 2/2 2/2 2/2 2/2 IR88-MW56IW 9,200 J TCE 132 3 2/2 2/2 2/2 2/2 1/2 2/2 IR88-MW54IW 800 cis-1,2-DCE 1,184 70 2/2 2/2 2/2 2/2 0/2 2/2 IR88-MW54IW 620 VC 61 0.03 2/2 1/2 2/2 2/2 0/2 2/2 IR88- MW56IW 5.6 J Benzene -- 1 0/1 NA 0/1 0/2 NA 0/2 NA NA Naphthalene -- 6 0/1 NA 0/1 0/2 NA 0/2 NA NA LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 20 231003104902_1EC6A744 Table 7. Summary of Analytical Results – Zone 2 UCH and MCH Aquifers Analyte ARGs (µg/L)a Current Groundwater Standard (µg/L)b February/March 2022 August 2022 Location of Maximum Concentration in August 2022 (µg/L) Frequency of Detection Frequency of Exceedance of ARG Frequency of Exceedance of Current Groundwater Standard Frequency of Detection Frequency of Exceedance of ARG Frequency of Exceedance of Current Groundwater Standard MCH Aquifer PCE 112 0.7 5/6 5/6 5/6 3/4 2/4 3/4 IR88-MW45DW3 24,000 J TCE 132 3 6/6 4/6 5/6 3/4 2/4 3/4 IR88-MW45DW3 1,600 J cis-1,2-DCE 1,184 70 6/6 2/6 5/6 4/4 0/4 3/4 IR88- MW45DW3 610 J VC 61 0.03 4/6 3/6 4/6 4/4 0/4 4/4 IR88- MW47DW3 12 J a ARGs are based on the concentration for each COC at which predictive modeling indicates attenuation to the MCLs within 100 years. b Current groundwater standards are the NCGWQSs (April 1, 2022). -- = Screening criteria not available. J = Analyte present, value may or may not be accurate or precise Groundwater Standards • PCE, TCE, and cis-1,2-DCE concentrations exceeded their current groundwater standards in both UCH aquifer monitoring wells (IR88-MW54IW and IR88-MW56IW) and in three MCH aquifer monitoring wells (IR88-MW18DW, IR88-MW45DW3, and IR88-MW47DW3) in August 2022. • VC concentrations exceeded its current groundwater standards in all UCH and MCH aquifer monitoring wells. • Benzene and naphthalene were not detected in the UCH aquifer in Zone 2. Active Treatment Milestones • PCE concentrations exceeded its ARG (112 µg/L) in both UCH aquifer monitoring wells (1,700 µg/L at IR88-MW54IW and 9,200 J µg/L at IR88-MW56IW) and in two MCH aquifer monitoring wells (24,000 J µg/L at IR88-MW45DW3 and 6,200 J µg/L at IR88-MW47DW3) in August 2022. • TCE concentrations exceeded its ARG (132 µg/L) in UCH monitoring well IR88-MW54IW at a concentration of 800 µg/L and in MCH monitoring wells IR88-MW45DW3 and IR88-MW47DW3 at concentrations of 1,600 J µg/L and 610 J µg/L, respectively. • Between November 2020 and August 2022, the total molar VOC concentration was reduced by 72 percent. Total molar VOC concentrations were calculated using results for all Zone 2 monitoring wells except for IR88-MW39MP-A, IR88-MW39MP-B, and IR88-MW39MP-C because these wells were abandoned in April 2022 and not sampled in August 2022. In FY 2021, the maximum PCE concentration was detected in IR88-MW56IW (120,000 J µg/L). In August 2022, the PCE concentration at IR88-MW56IW was 9,200 J µg/L (92 percent reduction). Permanganate was observed at IR88-MW56IW during the February/March 2022 sampling event, suggesting that chemical oxidation is responsible for the reductions observed at IR88-MW56IW. • Consistent with pre-remedy conditions, PCE concentrations exceeded 1 percent of its solubility (2,000 µg/L) at IR88-MW39MP-A, IR88-MW33DW, IR88-MW45DW3, IR88-MW47DW3 in February and March 2022 and IR88-MW56IW, IR88-MW45DW3, and IR88-MW47DW3 in August 2022 suggesting the presence of DNAPL. LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 231003104902_1EC6A744 21 4.3.3 Zone 3 Table 8 presents a summary of the COCs detected in samples collected from monitoring wells screened within the UCH aquifer in Zone 3 and the frequency of detections with concentrations that exceeded current groundwater standards in February and March 2022 and August 2022. Figure 14 presents results of PCE, TCE, cis-1,2-DCE, VC, and DHC in Zone 3 UCH aquifer groundwater in the vicinity of the biobarrier in molar concentrations, which allows for a direct comparison of parent compounds (PCE and TCE) and daughter products (cis-1,2-DCE, and VC) to better evaluate biological transformation and thereby, remedy effectiveness. Figures 15 and 16 show PCE, TCE, cis-1,2- DCE, VC, TOC, and DHC concentrations upgradient of, within, and downgradient of the biobarrier. Figure 17 presents results of PCE, TCE, cis-1,2-DCE, VC, and DHC in the most downgradient wells at the site in molar concentrations. NAIP and water quality parameter results were compared to the PILs to evaluate favorability of aquifer conditions for natural attenuation (Table 9). Table 8. Summary of Analytical Results – Zone 3 UCH Aquifer Analyte Current Groundwater Standard (µg/L)a February/March 2022 August 2022 Location of Maximum Concentration in August 2022 (µg/L) Frequency of Detection Frequency of Exceedance Frequency of Detection Frequency of Exceedance PCE 0.7 6/13 6/13 5/13 4/13 IR88-MW68UCH 150 J TCE 3 12/13 9/13 11/13 8/13 IR88-MW68UCH 86 J cis-1,2-DCE 70 13/13 2/13 13/13 2/13 IR88-MW22IW 85 J VC 0.03 11/13 8/13 11/13 9/13 IR88- MW22IW 18 a Current groundwater standards are the more conservative value of the NCGWQS (April 1, 2022), North Carolina Interim Maximum Allowable Concentration (April 1, 2022), and the federal MCL (May 2009). J = Analyte present. The surrogate spike recovery was outside of the acceptable range causing the results to be biased high. Groundwater Standards • Far upgradient of the biobarrier, PCE and TCE concentrations at IR88-MW15IW exceeded the current groundwater standard in February/March 2022 and August 2022 (Figure 7 and Attachment 3e). • Immediately upgradient of the biobarrier, the VC concentration at IR88-MW65UCH and TCE and VC concentrations at IR88-MW64UCH exceeded the current groundwater standard in February/March 2022 and August 2022 (Figure 7 and Attachment 3e). • Within the biobarrier, TCE, cis-1,2-DCE, and VC concentrations at IR88-MW22IW and the VC concentration at IR88-MW48IW exceeded their current groundwater standards in February 2022 and August 2022. • Sidegradient of the biobarrier, PCE and/or TCE concentrations at IR88-MW21IW and IR88-MW49IW exceeded within two orders of magnitude of the current groundwater standards in February 2022 and August 2022, consistent with previous results since sampling began. • Downgradient of the biobarrier, the VC concentration at IR88-MW66UCH exceeded the current groundwater standard in February 2022 and August 2022. TCE and VC concentrations at IR88-MW67UCH exceeded their current groundwater standards in February 2022; however, only the VC concentration exceeded in August 2022. • PCE, TCE, cis-1,2-DCE, and/or VC concentrations exceeded current groundwater standards at the most downgradient monitoring wells (IR88-MW20IW, IR88-MW63UCH, IR88-MW68UCH, and IR88-MW69UCH) (Figure 17, Attachment 3e). At the most downgradient location and nearest to the New River, only the VC concentration at IR88-MW63UCH exceeded the current groundwater standard (0.093 J µg/L) in August 2022. LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 22 231003104902_1EC6A744 Active Treatment Milestones • Most upgradient monitoring well (IR88-MW15IW): – MK statistical evaluation indicates trends are decreasing for TCE and stable for PCE (Attachment 4c). – NAIPs and water quality parameters indicate groundwater conditions were not favorable for ERD upgradient of the biobarrier as follows (Attachments 2 and 3e):  DO concentrations were greater than 1 mg/L and the ORP values ranged from 69 mV to 219 mV, which indicates aerobic conditions.  Ferrous iron concentrations were up to 1.0 mg/L, indicating that conditions were not sufficiently reducing to support iron reduction.  The sulfate concentration was 78 mg/L in February 2022 and remained similar in August 2022, indicating conditions were not conducive for reductive dechlorination.  Methane concentrations were less than 0.5 mg/L (0.0046 J mg/L in February 2022 and 0.0068 J mg/L in August 2022), and ethene and ethane were not detected, which indicates reductive dechlorination is not occurring upgradient of the biobarrier. • IR88-MW64UCH, IR88-MW22IW, and IR88-MW66UCH transect (Figure 15): – MK statistical analysis indicates concentrations are generally stable to decreasing upgradient, within, and downgradient of the biobarrier (Attachment 4c and Attachment 5). – Upgradient of the biobarrier, MK statistical evaluation indicates TCE concentrations are decreasing, and VC does not have a trend (Attachment 4c). The total molar concentration decreased from 1.26 µmol/L prior to the September 2021 injection event to 0.47 µmol/L in August 2022. – Within the biobarrier, TCE concentrations have decreased from 140 to 5 J µg/L and VC concentrations have decreased from 60 to 18 µg/L since the September 2021 injection event. The cis-1,2-DCE concentration was stable, indicating that daughter products are not accumulating. – VC concentrations are currently highest downgradient of the biobarrier (15 μg/L in August 2022), likely due to the transformation of PCE, TCE, and cis-1,2-DCE within the biobarrier. Despite the elevated VC concentration, the total molar concentration decreased from 2.5 µmol/L in February 2019 to 0.25 µmol/L in August 2022 indicating that total mass reduction is occurring as groundwater flows through the biobarrier (Figure 15 and Attachment 8). – The highest DHC population was observed within the biobarrier (16,200 cells/mL at IR88-MW22IW) following the injection event in September 2021; however, the DHC concentration decreased to 256 cells/mL in August 2022, indicating a less than favorable DHC population for reductive dechlorination. Functional genes (TCE R-Dase and VC R-Dase) were detected in all three wells in the transect in February 2022 and August 2022 and remained relatively constant between sampling events. – Conditions favorable for ERD are being established as groundwater flows through the biobarrier and sustained as follows (Table 9 and Attachment 7):  DO concentrations were less than 1 mg/L in February 2022 and the ORP values ranged from 0 mV at IR88-MW66UCH to -155 mV at IR88-MW22IW in FY 2022 within and downgradient of the biobarrier, which indicates conditions are favorable for anaerobic processes. In comparison, the DO was greater than 1 mg/L and the ORP values was 50 mV upgradient of the biobarrier.  Ferrous iron concentrations were 4.0 mg/L upgradient of the biobarrier, 2.0 mg/L within the biobarrier, and 1.5 mg/L downgradient of the biobarrier in August 2022, indicating that conditions were sufficiently reducing to support iron reduction. LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 231003104902_1EC6A744 23  Sulfate concentrations decreased from 74 mg/L upgradient of the biobarrier (IR88-MW64UCH) to below detection limits downgradient of the biobarrier (IR88-MW66UCH). This pattern indicates the biobarrier has established sulfate reducing conditions conducive for reductive dechlorination.  Methane concentrations were greater than 0.5 mg/L within (10 mg/L at IR88-MW22IW) and downgradient of (17 mg/L at IR88-MW66UCH) the biobarrier, and less than 0.5 mg/L upgradient of the biobarrier. This pattern indicates the biobarrier has established methanogenic conditions conducive for reductive dechlorination.  Ethene was detected within (0.0033 J mg/L at IR88-MW22IW) and downgradient (0.0092 J mg/L at IR88-MW66UCH) of the biobarrier. Ethene was not detected upgradient of the biobarrier and ethane was not present within the biobarrier. This pattern suggests complete dechlorination is occurring as groundwater flows through the biobarrier.  The TOC concentration within the biobarrier (IR88-MW22IW) decreased from 16 to 1.7 mg/L in August 2022 following the September 2021 injection event. However, downgradient of the biobarrier at IR88-MW66UCH, the TOC concentration increased in FY 2022, suggesting that the September 2021 injection event successfully distributed substrate as groundwater migrated downgradient. Table 9. Zone 3 NAIP and Water Quality Parameter Results for August 2022 Performance Monitoring Event Parameter NAIP Water Quality Parameter Alkalinity Chloride Methane Ethane Ethene Sulfate Sulfide TOC DHC Functional Genes Ferrous Iron pH DO ORP PILs for Favorable Condition > 50 mg/L > 1 mg/L > 0.5 mg/L Detectable Concentrations Detectable Concentrations < 20 mg/L and/or Decreasing Concentrations Detectable Concentrations > 20 mg/L > 1,000 cells/mL Detectable Concentrations > 1 mg/L 6 - 8 SU < 1 mg/L < 50 mV IR88-MW15IW -- X -- -- -- -- -- -- -- X X -- -- -- IR88-MW22IW X X X -- -- -- -- -- -- X X X X X IR88-MW48IW X X X -- -- -- -- -- -- X X X X X IR88-MW66UCH X X X -- X X X X -- X X X -- X IR88-MW67UCH X X X -- -- -- -- -- -- -- X -- X X IR88-MW64UCH X X -- -- -- -- -- -- -- X X X X X IR88-MW65UCH X X -- -- -- -- X -- -- -- X X X X IR88-MW20IW X X X -- -- -- X -- -- X X X X X X = PILs were met -- = PILs were not met > = greater than < = less than LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 24 231003104902_1EC6A744 • IR88-MW65UCH, IR88-MW48IW, and IR88-MW67UCH transect (Figure 16): – MK statistical analysis indicates concentrations are generally stable to decreasing upgradient, within, and downgradient of the biobarrier (Attachment 4c and Attachment 5). – Upgradient of the biobarrier, TCE concentrations decreased from 2.5 µg/L to 1.2 J µg/L and VC concentrations decreased from 0.19 µg/L to 0.053 J µg/L since the September 2021 injection event. Cis- 1,2-DCE and TOC concentrations have showed minimal change during this same period. – Following the second injection event, all COC concentrations within the biobarrier (IR88-MW48IW) were either below their current groundwater standards or below the laboratory detection limit. – As shown on Figure 16 and in Attachment 6, the total molar concentration downgradient of the biobarrier (IR88-MW67UCH) increased slightly from 0.056 µmol/L in February 2019 to 0.072 µmol/L in August 2022. – The microbial population was lower than optimal along this transect, with DHC concentrations ranging from 0.9 cells/mL upgradient of the biobarrier (IR88-MW65UCH) in August 2022 to 12.8 cells/mL within the biobarrier (IR88-MW48IW) in February 2022 and no notable increase following the injection event. – Conditions favorable for ERD are being established within the biobarrier and sustained as follows (Table 9 and Attachment 7):  DO concentrations were less than 1 mg/L and ORP values were generally low within, upgradient, and downgradient of the biobarrier (-85 mV, -57 mV, and -75 mV, respectively), which indicates conditions are favorable for anaerobic processes.  Ferrous iron concentrations were elevated upgradient of (1.5 mg/L at IR88-MW65UCH), within (2.0 mg/L at IR88-MW48IW), and downgradient of (1.0 mg/L at IR88-MW67UCH) the barrier, indicating that conditions were sufficiently reducing to support iron reduction.  Sulfate concentrations within, upgradient, and downgradient of the biobarrier were 51 mg/L, 54 mg/L, and 39 mg/L, respectively. Though the presence of sulfate at concentrations higher than 20 mg/L may compete with the reductive dechlorination pathway, the concentration decreases from the biobarrier to the downgradient monitoring location suggest sulfate reducing conditions that are indicative or strongly reducing conditions suitable for ERD.  Methane concentrations remained above 0.5 mg/L in FY 2022 within the biobarrier at IR88-MW48IW (8.8 mg/L) and downgradient of the biobarrier at IR88-MW67UCH (4.3 mg/L). In comparison, methane concentrations reduced to 0.4 mg/L upgradient of the biobarrier at IR88-MW65UCH in August 2022. This pattern indicates that methanogenesis is continuing to occur as a result of the biobarrier.  Within the biobarrier at IR88-MW48IW, TOC concentrations remained low following the injection event (1.3 mg/L in August 2021); however, TOC was observed to increase at downgradient monitoring well IR88-MW67UCH from 0.92 mg/L before the September 2021 injection event to 11 mg/L after the injection event, then reduced back to baseline levels of 0.87 J mg/L in August 2022. This suggests that some substrate may have been distributed preferentially to this location, but have since been consumed or migrated downgradient. • Sidegradient monitoring wells (IR88-MW21IW and IR88-MW49IW): – MK statistical analysis indicates concentrations are generally stable to decreasing (Figure 14, Attachment 4c). – As shown on Attachment 6, the total molar concentration is fluctuating at IR88-MW21IW (from 0.630 µmol/L in February 2019 to 0.306 µmol/L in August 2022) and decreasing at IR88-MW49IW (from 0.179 µmol/L to 0.053 µmol/L during the same period). Analytical results are do not indicate that the plume is flowing preferentially around the biobarrier. LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 231003104902_1EC6A744 25 • Most downgradient monitoring wells (IR88-MW20IW, IR88-MW63UCH, IR88-MW68UCH, and IR88-MW69UCH): – Treated groundwater from the biobarriers is not anticipated to reach the downgradient monitoring wells (approximately 300 feet from the biobarrier) at the site for approximately 3 years (2025) (Figure 7). – MK statistical analysis indicates VC concentrations at IR88-MW20IW, IR88-MW63UCH, IR88-MW68UCH, and IR88-MW69UCH are stable. – VC was not detected at IR88-MW20IW, IR88-MW63UCH, IR88-MW68UCH, and IR88-MW69UCH before February 2019. The VC concentration remains below ten times the NCSWQS (24 µg/L) indicating impacted groundwater is unlikely to affect surface water (Attachment 3f). 5 Vapor Intrusion Monitoring Performance monitoring events were conducted for the VIMS at Buildings 37 and 43 and the SVS at Building HP57 in Quarters 1, 2, 3, and 4 in FY 2022 (Figure 18). Weekly system checks at Buildings 37 and 43, and monthly checks at HP57 were conducted, which included a visual inspection of the VIMS components and collection of vacuum readings to confirm the VIMS was operational. Monthly checks were also completed at Building 3B to ensure the system was operating through May 2022. Buildings 3 and 3B were demolished in September 2022. Based on the December 2020 results, it was recommended to collect subslab soil gas samples from Buildings 37, 43, and HP57 in December 2021 following injections at Site 88 to evaluate how the changes in groundwater concentrations affect soil gas concentrations (CH2M, 2021a). Per NCDEQ’s request, VC was added to the list of COCs at the site to evaluate subsurface changes after injections at Site 88. The subsections below present the performance monitoring activities and subslab soil gas sampling, data evaluation, and results of the VIMS operations and maintenance, the December 2021 subslab soil gas samples, and quarterly performance monitoring in FY 2022. No exhaust samples were collected from Buildings 37, 43, and HP57 during this period because PCE and/or TCE concentrations have generally been decreasing since startup of the VIMS and SVS, effectively reducing the VI potential at Buildings 37, 43, and HP57. 5.1 Activities FY 2022 VIMS quarterly performance monitoring were conducted by CH2M HILL in December 2021, March 2022, June 2022, and September 2022, in accordance with the FY 2022 Sampling and Analysis Plan (CH2M, 2021b). System operating parameter checks were conducted weekly on the VIMS at Buildings 37 and 43, and monthly on the SVS at Building HP57, throughout FY 2022. Meadows conducted monthly checks to confirm the VIMS was operating at Building 3B through May 2022. For VIMS, flow rate, riser vacuum, short-term differential pressure (DP), system parameter checks, and gauging data were collected quarterly and are provided in Attachment 9. For SVS, flow rate, vacuum, and VOC (parts per million) data were collected quarterly and are provided in Attachment 9. CH2M HILL collected subslab soil gas samples from Building 37 (IR88-BLDG37-SG07 and IR88-BLDG37-SG08), Building 43 (IR88-BLDG43-SG06 and IR88-BLDG43-SG17), and Building HP57 (IR88-SG19 and IR88-SG20) in December 2021 (Figures 19, 20, and 21). The subslab soil gas probes were purged with a sampling manifold (consisting of stainless-steel Swagelok gas-tight valves and fittings and Teflon tubing) and an air pump. One liter of subslab soil gas was purged at 200 milliliters per minute into a Tedlar bag to collect field parameters. Subslab soil gas samples were collected in 1-liter SUMMA canisters equipped with flow controllers. The flow controllers regulated the sample collection rate to 200 milliliters per minute, resulting in a sample collection period of approximately 5 minutes. The subslab soil gas samples were submitted to Eurofins Air Toxics for building-specific VOC analysis by EPA Method TO-15. The location of Buildings 37 and 43 with VIMS along with the Building HP57 with SVS is shown in Figure 18. Figures 19 and 20 show the Buildings 37 and 43 VIMS components and subslab monitoring locations. Figure 21 provides a diagram of the Building HP57 SVS. LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 26 231003104902_1EC6A744 5.2 Data Evaluation This section presents the screening levels used for evaluation of the subslab soil gas samples collected in December 2021 and an evaluation of the design and systems operating parameters (Attachment 9). 5.2.1 Screening Levels After EPA updated their screening levels, results from the December 2021 event were compared to the screening levels shown in Table 10 and are calculated based on the following criteria: For subslab soil gas, data were compared to the project action limit (PAL) of EPA Non-Residential (Buildings 37 and 43) and Residential (Building HP57) VISLs based on a TCR of 1×10-4 or a THQ of 1. EPA Non-Residential VISLs for soil gas are based on a Department of Defense attenuation factor (AF) of 0.001, which is under discussion by EPA and the Navy at the Headquarters level. The EPA Residential VISLs for soil gas are based on AF of 0.03. Table 10. Subslab Soil Gas Screening Levels Analyte PAL (μg/m3) EPA Non-Residential VISLs based on TCR=10-4 and THQ=1, (Subslab Soil Gas), AF = 0.001 PAL (μg/m3) EPA Residential VISLs based on TCR=10-4 and THQ=1, (Subslab Soil Gas), AF = 0.03 PCE 180,000 1400 TCE 8,800 70 VC 9,300 560 Note: Site 88 Non-Residential and Residential VISLs are based on the EPA Residential VISLs (TCR=1×10-4 and THQ=1). µg/m3 = microgram(s) per cubic meter 5.2.2 Design and System Operating Parameters The following design operating parameters were collected to determine whether the VIMS were operating to effectively mitigate the VI pathways: • DP measurements at subslab soil gas monitoring locations. • Measurements of -0.01 inch of water column (inch wc) or less indicate that the subslabs are being depressurized and disconnecting the VI pathway. The following system operating parameters and groundwater levels were collected to determine whether the blowers associated with VIMS are operating consistently, and to determine whether there is a potential for any effect on the system because of a high water table: • Riser vacuum and flow rate measurements from the VIMS exhaust locations were compared to the established system operating parameters to evaluate whether the system is operating consistently. • Inspection of VIMS-related equipment to confirm the system is operational and in good condition. • Groundwater level data were collected from IR88-MW58 and IR88-MW03 near Buildings 43 and 37, respectively, to determine whether a high water table is affecting system performance. This is determined by checking whether the water table was in contact with the building slab (Figure 18). The following parameters were collected to determine whether the SVS at Building HP57 is operating to effectively mitigate the VI pathway: • Short-term DP measurements at manhole locations had negative readings, indicating that the preferential pathway is being depressurized and disconnecting the VI pathway. • Vacuum and flow rate measurements from the SVS blower were compared to the historical readings to evaluate whether the system is operating consistently. • Inspection of the SVS-related equipment to confirm the system is operational and in good condition. LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 231003104902_1EC6A744 27 5.3 Performance Monitoring Results Groundwater level data collected from two surficial aquifer monitoring wells (IR88-MW03 and IR88-MW58) in December 2021, March, June, and September 2022 were between 5.86 ft bgs and 6.92 ft bgs for IR88-MW03; and between 8.99 ft bgs and 11.18 ft bgs for IR88-MW58 (Attachment 9). The water table is similar to data collected during the previous events and was not in contact with the subslab that would have affected the system performance. Evaluation of the performance monitoring results for each building are discussed in the following sections. 5.3.1 Building 37 The design operating parameters indicate that the VIMS is operating to effectively mitigate the VI pathway, as follows: • Short-term DP measurements were collected from two subslab monitoring locations, and were below -0.01 inch wc in December 2021, and in March, June, and September 2022, indicating that the subslab is being depressurized and mitigating the VI pathway (Attachment 9). The system operating parameters indicate that the VIMS is operating consistently, as follows: • Vacuum and flow rate measurements were collected from six nodes during each performance monitoring event. Vacuum measurements met the system operating parameters on all six nodes in December 2021, and in March 2022, June 2022, and September 2022, except for IR88-BLDG37-GE04 in September 2022, which was not measured due to lack of access to the room. Out of the six flow rate measurements, two measurements in December 2021, three measurements in March 2022, two measurements in June 2022, and two measurements in September 2022 did not meet system operating parameters (Attachment 9). Even though flow rates in these nodes did not meet operating parameters, DPs in subslab probes met the design operating parameter, which indicates that the VIMS operation is lowering the potential for VI. Samples from the subslab soil gas collected from two locations were analyzed for TCE, PCE, and VC and results are shown in Table 11. • TCE was detected below the EPA Non-Residential VISL (AF=0.001) for subslab soil gas; PCE and VC were not detected. Table 11. Site 88 Building 37 Subslab Soil Gas Sample Results for December 2021 Analyte PAL (μg/m3) EPA Non-Residential VISLs based on TCR=10-4 and THQ=1, (Subslab Soil Gas), AF=0.001 Sample ID and Sample Date IR88-BLDG37-SG07-21D 12/14/21 IR88-BLDG37-SG08-21D 12/14/21 PCE 180,000 4.8 U 4.8 U TCE 8,800 6 3.8 U VC 9,300 1.8 U 1.8 U Note: Site 88 Non-Residential and Residential VISLs are based on the EPA Residential VISLs (TCR=1×10-4 and THQ=1). U = The material was analyzed for, but not detected 5.3.2 Building 43 The design operating parameters indicate that the VIMS is operating to effectively mitigate the VI pathway, as follows: • Short-term DP measurements were collected from two subslab monitoring locations, and were below -0.01 inch wc in December 2021, March 2022, June 2022, and September 2022, indicating that the subslab is being depressurized and mitigating the VI pathway (Attachment 9). LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 28 231003104902_1EC6A744 The system operating parameters indicate that the VIMS is operating consistently, as follows: • Vacuum and flow rate measurements were collected at three nodes during each performance monitoring event. Vacuum measurements met the system operating parameters on all three nodes in March, June, and September 2022. Out of the three flow rate measurements, all measurements in March 2022 met system operating parameters, and two measurements in December 2021, one measurement in June 2022 and September 2022 did not meet system operating parameters (Attachment 9). Even though flow rates in these nodes did not meet operating parameters, DPs in subslab probes met the design operating parameter, which indicates that the VIMS operation is lowering the potential for VI. Samples from the subslab soil gas collected from two locations were analyzed for TCE, PCE, and VC, and results are shown in Table 12. • PCE was detected less than the EPA Non-Residential VISL (AF=0.001) for subslab soil gas; TCE and VC were not detected. Table 12. Site 88 Building 43 Subslab Soil Gas Sample Results for December 2021 Analyte PAL (μg/m3) EPA Non-Residential VISLs based on TCR=10-4 and THQ=1, (Subslab Soil Gas), AF=0.001 Sample ID and Sample Date IR88-BLDG43-SG06-21D 12/14/21 IR88-BLDG43-SG17-21D 12/14/21 PCE 180,000 320 120 TCE 8,800 3.9 U 3.9 U VC 9,300 1.9 U 1.8 U Note: Site 88 Non-Residential and Residential VISLs are based on the EPA Residential VISLs (TCR=1E-4 and THQ=1). U = The material was analyzed for, but not detected 5.3.3 Building HP57 The following parameters indicate that the SVS is operating to effectively mitigate the VI preferential pathway, as follows: • Short-term DP measurements were collected from all three manhole locations and were all negative in December 2021, March 2022, June 2022, and September 2022, indicating that the sewer is being depressurized and lowering the potential for VI (Attachment 9). • Vacuum and flow rate measurements were collected from the SVS blower. Readings were similar to historical readings, indicating that the SVS is operating consistently. Samples from the subslab soil gas collected from two locations were analyzed for TCE, PCE, and VC, and results are shown in Table 13. • TCE, PCE, and VC were not detected. Table 13. Site 88 Building HP57 Subslab Soil Gas Sample Results for December 2021 Analyte PAL (μg/m3) EPA Residential VISLs based on TCR=10-4 and THQ=1, (Subslab Soil Gas), AF=0.03 Sample ID and Sample Date IR88-SG19-21D 12/15/21 IR88-SG20-21D 12/15/21 IR88-SG20D-21D 12/15/21 PCE 1400 4.9 U 4.9 U 4.9 U TCE 70 3.8 U 3.8 U 3.8 U VC 560 1.8 U 1.8 U 1.8 U Note: Site 88 Non-Residential and Residential VISLs are based on EPA Residential VISLs (TCR=1×10-4 and THQ=1). U = The material was analyzed for, but not detected LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 231003104902_1EC6A744 29 6 Conclusions and Recommendations This section presents the conclusions and recommendations based on the performance monitoring data collected in FY 2022. Attachment 10 summarizes the performance metrics for each remedy component and the expected outcome. Attachment 11 summarizes the FY 2023 sampling locations and methods for Site 88. 6.1 Conclusions 6.1.1 Performance Monitoring Zone 1 Results indicate that bioremediation is occurring. The total molar mass reduction in the surficial and UCH aquifers within the treatment area was approximately 49 percent between January 2019 and August 2022. While reducing conditions were observed in the both the surficial and UCH aquifers following the ERD injections, and concentrations of parent products decreased while daughter products remained stable, concentrations of COCs still remain above the ARGs. An alternative substrate delivery approach may be required to achieve ARGs as limited amount of substrate was delivered to the subsurface due to challenges with daylighting during the injection events in 2021. However, repairs made to the storm sewer in June 2023 are expected to mitigate daylighting if/when future injections are conducted. Outside of the treatment area at IR88-MW25, PCE concentrations exceeded the ARG. This area may need to be incorporated into the treatment area for future injection events. Zone 2 PCE, TCE, cis-1,2-DCE, and/or VC concentrations exceeded their current groundwater standards and/or the ARGs in both the UCH and MCH aquifers in FY 2022. However, between November 2020 and August 2022, the total molar VOC concentration was reduced by 72 percent, indicating that treatment is occurring. Additional monitoring is required to evaluate trends and mass reduction at individual locations. Zone 3 Based on the groundwater geochemistry, conditions within and downgradient of the biobarrier are favorable for reductive dechlorination. Though the biobarrier is functioning as designed, reinjection may be needed to maintain biobarrier effectiveness. Despite concentration reductions as groundwater migrates through the treatment zone, TCE, cis-1,2-DCE, and/or VC concentrations exceed their current groundwater standards within the biobarrier; TCE and VC concentrations exceed their current groundwater standards beyond the biobarrier. PCE and/or TCE concentrations continue to exceed current groundwater standards at locations sidegradient to the biobarrier. Analytical results are generally consistent over time and do not indicate that the plume is flowing preferentially around the biobarrier. Treated groundwater has not yet migrated to the most downgradient monitoring wells at the site, closest to the New River, and is not expected for approximately 3 years after the FY 2022 sampling (2025). VC was detected at concentrations above current groundwater standards at the most downgradient monitoring well, but below 10 times the NCSWQS, indicating that impacted groundwater is unlikely to affect surface water. 6.1.2 Vapor Intrusion Mitigation System Monitoring Based on the December 2021, March 2022, June 2022, and September 2022 VIMS performance monitoring at Buildings 37 and 43 and the SVS performance monitoring at Building HP57, the subslab at each building and sewer are being depressurized and mitigating the VI pathway, and the systems were operational and in good condition (Attachment 9). Groundwater level data collected from two surficial aquifer monitoring wells (IR88-MW03 and IR88-MW58) in December 2021, March 2022, June 2022, and September 2022 (Attachment 9) show that system performance LONG-TERM MONITORING REPORT INSTALLATION RESTORATION PROGRAM SITE 88 FISCAL YEAR 2022 30 231003104902_1EC6A744 was not affected significantly at these three buildings, and groundwater was not found to be in contact with the slab. The subslab soil gas sampling results from samples collected at Buildings 37 and 43 indicate subslab soil gas concentrations have decreased significantly from pre-installation concentrations. Subslab soil gas PCE concentrations in samples collected from Building 37 have decreased from a maximum of 75,000 µg/m3 in 2008 to non-detect in 2021. At Building 43, subslab soil gas concentrations of PCE have decreased from a maximum of 240,000 µg/m3 in 2008 to 320 µg/m3 in 2021. As discussed in Section 6.1.1, groundwater treatment has reduced COC concentrations in the surficial aquifer which could contribute to soil gas concentrations via volatilization. These groundwater concentration reductions, in combination with the mass removed by VIMS operation, appear to have reduced soil gas concentrations such that continued operation of the VIMS is not necessary. A VIMS rebound study is being conducted to determine if soil gas concentrations remain at levels that are protective when the VIMS is offline. 6.2 Recommendations Based on the monitoring results, the following is recommended: • Continue semiannual performance monitoring in Zones 1, 2, and 3 for COCs, NAIPs, and microbial populations as defined in Attachment 11 with the following changes: – Conduct a pilot study to evaluate alternative substrate delivery in Zone 1. – Re-evaluate the treatment area prior to the next full scale injection event in Zone 1 to include the areas around all monitoring wells with ARG exceedances. – Consider reinjection of permanganate and recirculation in Zone 2 in FY 2024/2025. – Consider reinjection of LactOil in the biobarrier in Zone 3 in FY 2024. – Redevelop IR88-MW05 and IR88-MW60 to remove suspected emulsified vegetable oil and then sample. • Discontinue VIMS operation at Buildings 37 and 43 at Site 88 while a rebound study is being conducted in FY 2023 to evaluate whether VIMS can be decommissioned. Decisions on future operations will be determined based upon rebound study results. • If Buildings 3 and 3B are rebuilt, then VIMS should be incorporated in the construction, dependent on the COC groundwater and soil gas concentrations in the area of the new building footprint. • Continue quarterly VIMS performance monitoring checklists at HP-57 (DP, vacuum, flow rate, and water levels) and monthly inspections of SVS related equipment at Building HP57. 231003104902_1EC6A744 1 References AGVIQ/CH2M HILL, Inc. Joint Venture 1 (AGVIQ/CH2M). 2009. Vapor Intrusion Evaluation Report, Marine Corps Base Camp Lejeune, Jacksonville, North Carolina. November. CH2M HILL, Inc. (CH2M). 2008. Remedial Investigation, Site 88, Operable Unit No. 15, Marine Corps Base, Camp Lejeune, North Carolina. March. CH2M. 2009. Phase I and II Vapor Intrusion Evaluation Report. Marine Corps Base Camp Lejeune. November. CH2M. 2011a. Phase III Vapor Intrusion Evaluation Report. Marine Corps Base Camp Lejeune. October. CH2M. 2011b. Technical Memorandum: Summary of ISCO, ERD, and Biobarrier Pilot Studies OU 15, Site 88, Marine Corps Base, Camp Lejeune, North Carolina. January. CH2M. 2015. Technical Memorandum: Vapor Intrusion Monitoring, Installation Restoration Program Marine Corps Installations East-Marine Corps Base Camp Lejeune, North Carolina. January CH2M. 2018. Technical Memorandum: Phase I and II Building HP57 Sewer Ventilation Pilot Study, Site 88, Marine Corps Base Camp Lejeune, North Carolina. July. CH2M. 2019. Record of Decision Operable Unit 15, Site 88, Marine Corps Base Camp Lejeune, North Carolina. April. CH2M. 2020. Remedial Design, Site 88, Operable Unit 15, Marine Corps Base Camp Lejeune, North Carolina. March. CH2M. 2021a. Vapor Intrusion Mitigation System Performance Monitoring December 2020 Data, Marine Corps Installation East-Marine Corps Base Camp Lejeune, North Carolina. July. CH2M. 2021b. Sampling and Analysis Plan, Long-Term Monitoring and Vapor Intrusion Mitigation Systems Performance Monitoring Sites 2, 3, 6 and 82, 35, 36, 49, 69, 73, 78, 86, 88, 89, 93, 99, 100, 101 and 102, Fiscal Year 2022, Marine Corps Base Camp Lejeune and Marine Corps Air Station New River, North Carolina. November. CH2M. 2022. Zones 1 and 3 Treatability Studies Site 88, Operable Unit 15, Marine Corps Base Camp Lejeune, North Carolina. July. Kueper, B.H., H.F. Stroo, C.M. Vogel, and C.H. Ward, eds. 2014. Chlorinated Solvent Source Zone Remediation. January. OHM Remediation Services Corporation, Inc. (OHM). 1996. Underground Storage Tank and AST Removal at Building 25, Marine Corps Base Camp Lejeune, Jacksonville, North Carolina. October. U.S. Environmental Protection Agency (EPA). 2023. Vapor Intrusion Screening Level Calculator. https://www.epa.gov/vaporintrusion/vapor-intrusion-screening-level-calculator. Accessed May. Venable, P., T. Chaudhry, D. Caldwell, I. Rivera-Duarte, and C. Lutes, (Venable). 2015. A Quantitative Decision Framework for Assessing Navy Vapor Intrusion Sites. June. Figures New River Atlantic OceanGreater Sandy Run Rifle Range Courthouse Bay Hadnot PointIndustrial Area Montford Point Marine Corps Air Station New River Camp Geiger Mainside Tarawa Terrace US HWY 17STATE HWY 172 STAT E H WY 24 S T A T E H WY 50 S T A T E H W Y 53 S T A T E H W Y1105STATE H W Y 1 1 0 7 Legend Highways Installation Boundary Land Use Control Boundary Aquifer Use Control Boundary Non-Industrial Use Control Boundary (Soil) Intrusive Activities Control Boundary (Soil) Intrusive Activities Control Boundary (Groundwater) Industrial/Non-Industrial Use Control Boundary (Vapor Intrusion) MCB Camp Lejeune NC VA SC \\DC1VS01\GISNavyClean\MIDLANT\MCBCampLejeune\MapFiles\LTM\2022\9000NVI5_Site88\Figure_1_Base_Location_Map.mxd4/13/2023PAYNEM Figure 1Base Location MapSite 88 Long-Term Monitoring Report FY 2022MCB Camp LejeuneNorth Carolina´ 0 15,000 30,0007,500 Feet Site 88 !(!(!(!(!(!(!(!( !(!(!(!( !(!(!( !(!( !(!(!( !(!(!(!(!( !(!(!(!( !(!(!(!( !(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!( !( !(!(!( !(!(!(!(!( !( !( !(!(!(!(!(!( !(!(!(!(!(!(!( !(!(!(!(!( !(!(!(!(!(!(!( !(!(!(!(!(!(!(!( !(!(!(!(!(!( !( !(!( !(!( !( !( !( !( !( !(!(!(!( !? !? !? !? !? !? !? !? !A!A !A +U!< +U +U +U!A !A !< !A +U!< +U!A !<!A !< !< !A !< +U +U +U +U !A!< !<!A !< !< !A !P !< !< !A !A !A !A !< !A !A +U +U!P !< +U +U!A !A !<!A !A +U +U !A !P !A !A!A!A +U!A !A !A!A !A !A +U +U!< !P !A +U!A !A !A +U!A !< !A !< !<+U !< !P !P !<!< !A !A!A!A +U +U!A+U +U +U +U !P!A +U!P !A !A !< !< +U!< !< !<!P!A !<!A !A !A !<!A !<!A !A !< +U !A!A !A +U +U !A !A !A!A +U +U !A !A !A !A !A !A !A!<!< !? !U !A Zone 1 Zone 2 Zone 3 IR88-MW02IW IR88-MW18DW IR88-RABITTMW1 IR88-MW65UCH IR88-MW06 IR88-MW15IW IR88-MW30IW IR88-MW49IW IR88-MW20IW IR88-MW22IW IR88-MW25 IR88-MW48IW IR88-MW54IW IR88-MW56IW IR88-MW02 IR88-MW39MP-A IR88-MW45DW3 IR88-MW47DW3 IR88-MW05IW IR88-MW21IW IR88-MW33DW IR88-MW63UCH IR88-MW68UCH IR88-MW69UCH IR88-MW66UCH IR88-MW67UCH IR88-MW64UCH IR88-MW06DW IR88-MW16DW IR88-MW44DW3 IR88-GWEX08DW IR88-MW30 IR88-MW55IW IR88-RABITTMW5 IR88-RABITTMW8 IR88-MW02DW IR88-MW05DW2 IR88-RABITTMW4IR88-RABITTMW6 IR88-RABITTMW7 SWMU615-MW03 SWMU615-MW02 IR88-MW03IW IR88-MW22DW IR88-MW46DW3 IR88-MW50 IR88-IW01IR88-IW02 IR88-MW04IW IR88-MW07 IR88-MW09 IR88-MW11 IR88-MW11IW IR88-MW12IW IR88-MW14DW IR88-MW16 IR88-MW17 IR88-MW17IWIR88-MW18DW3 IR88-MW18IW IR88-MW19DW IR88-MW23DW IR88-MW23IW IR88-MW24DW IR88-MW26 IR88-MW27 IR88-MW28 IR88-MW29 IR88-MW32DW IR88-MW35DW IR88-MW35IW IR88-MW37DWIR88-MW38DW IR88-MW38IW IR88-MW41DW2 IR88-MW43DW3 IR88-MW53IW IR88-MW62MCH IR88-RABITTMW3 IR88-MW01IW IR88-MW03 IR88-MW05 IR88-MW05DW IR88-MW11DW IR88-MW12 IR88-MW14IR88-MW14IWIR88-MW19IW IR88-MW20DW IR88-MW34IW IR88-MW42DW IR88-MW60UCHIR88-MW61UCH IR88-MW62UCH IR88-EX07IW IR88-IW03 IR88-MW01 IR88-MW07IW IR88-MW08IR88-MW08IW IR88-MW09IW IR88-MW10IW IR88-MW13IR88-MW13IW IR88-MW16DW2 IR88-MW16IW IR88-MW17DW IR88-MW21DW IR88-MW34DW IR88-MW41DW IR88-MW42DW2 IR88-MW57IW SWMU615-MW01 SWMU615-MW03IW SWMU615-MW05 SWMU615-MW07 SWMU615-MW04 IR88-MW03DW IR88-MW04 IR88-MW04DW IR88-MW06IW IR88-MW07DW IR88-MW12DW IR88-MW15 IR88-MW15DW IR88-MW16DW3 IR88-MW18DW2 IR88-MW24IW IR88-MW31IW IR88-MW32IW IR88-MW33IW IR88-MW36DW IR88-MW36IW IR88-MW37IW IR88-MW50IWIR88-MW51IW IR88-MW52IW IR88-MW58 IR88-MW59 IR88-MW64MCH IR88-RABITTMW2 SWMU615-MW06 SWMU615-MW08 IR88-MW31 IR88-MW39MP-CIR88-MW39MP-B IR88-MW60 IR88-MW70UCH 25 3B 3 IR88-EX04MCH IR88-EX05MCH IR88-EX06MCH IR88-EX07MCH IR88-EX08MCH IR88-EX02MCH IR88-EX03MCH IR88-EX01MCHMCHUGH B L VD VIRGINIA DARE DR A ST D STLUCY BREWER AVE C ST POST LN B ST IR88-MW40MP 43 HP57 37 Figure 2Site 88 Location MapSite 88 Long-Term Monitoring Report FY 2022MCB Camp Lejeune North Carolina´ Legend +U Surficial Aquifer Monitoring Well +U Surficial Aquifer Monitoring Well - not in LTM !A Upper Castle Hayne Aquifer Monitoring Well !A Upper Castle Hayne Aquifer Monitoring Well - not in LTM !<Middle Castle Hayne Aquifer Monitoring Well !<Middle Castle Hayne Aquifer Monitoring Well - not in LTM !?Lower Castle Hayne Aquifer Monitoring Well !P Lower Castle Hayne Aquifer Monitoring Well - not in LTM !?Multi-Port Monitoring Well - not in LTM !?Vertical Extraction Well !(Upper Castle Hayne Aquifer Injection Well !(Surficial Aquifer Injection Well Zone Boundary Horizontal Injection Well Casing Horizontal Injection Well Screened Interval Extraction Conveyance Line Building with Vapor Intrusion Mitigation System Building with Sewer Ventilation System Demolished Building Soil Mixing Area UST Excavation AreaLand Use Control Boundary Aquifer Use Control BoundaryNon-Industrial Use Control Boundary (Soil) Intrusive Activities Control Boundary (Soil)Intrusive Activities Control Boundary (Groundwater)Industrial/Non-Industrial Use Control Boundary (Vapor Intrusion)1 inch = 200 feet 0 200100 Feet \\dc1vs01\GISNavyClean\MIDLANT\MCBCampLejeune\MapFiles\LTM\2022\9000NVI5_Site88\Figure_2_Site_88_Location_Map.mxd8/1/2023AM038876 New River Zone 2 Zone 1 Zone 3 3 43 3BMcHugh B o u l e va rd C Street Soil Mixing Area 19 236 107 133 103 Castle Hayne AquiferCastle Hayne AquiferCastle Hayne AquiferCastle Hayne AquiferUpper Castle Hayne AquiferUpper Castle Hayne AquiferUpper Castle Hayne Aquifer Middle Castle Hayne AquiferMiddle Castle Hayne Aquifer Lower Castle Hayne AquiferLower Castle Hayne Aquifer Clayey SiltClayey SiltClayey SiltClayey SiltClayey SiltClayey SiltClayey Silt Clayey Sil t Clayey Sil t Potential Source.HistoricalInfiltration fromStorm SewerSystem Surficial AquiferSurficial AquiferSurficial AquiferWater Table PotentialDNAPL 43 C Street 103 3McHugh B o u l e va rd 103103 3BMcHugh B o u l e va rdMcHugh B o u l e va rd 191919191919 103103 Potential Risk to Future Construction Worker:Dermal exposure and inhalation of groundwater vapor in an excavation (cis-1,2-DCE and VC) and soil gas (PCE, TCE, and VC) The potential for complete VI pathways and associated indoor air concentrations would need to be evaluated if new construction were to take place or if there are building changes that impact the slab or foundation, or land use changes occur within 100 feet of the surficial aquifer groundwater VOC plume. The potential for complete VI pathways and associated indoor air concentrations would need to be evaluated if new construction were to take place or if there are building changes that impact the slab or foundation, or land use changes occur within 100 feet of the surficial aquifer groundwater VOC plume. Primary Source Area Potential Risk to Future Residents:Ingestion of, dermal contact with, and inhalation of VOCs from groundwater (PCE, TCE, cis-1,2-DCE, and VC). D Street J u l i a n S m i t h C Street McH u g h B o u l e v a r d NEW RIVERWater Table Surficial AquiferSurficial AquiferSurficial Aquifer Zone 3Zone 3 Zone 2Zone 2Zone 2 Zone 1Zone 1 Clayey SiltClayey Silt Castle Hayne AquiferCastle Hayne Aquifer Beaufort Confining UnitBeaufort Confining Unit Water Table Clayey SiltClayey Silt 37 Former Bldg. 2 5DEMO L I S H E D HP57 43 Infiltration V irginia Dare Drive Post L ane 4343 Potential Vapor IntrusionPotential Vapor Potential Vapor Potential Vapor Potential Vapor Potential Vapor Potential Vapor Potential Vapor Potential Vapor Potential Vapor Potential Vapor Potential Vapor HP57HP57HP57 3B 4343 Intrusion 4343 Intrusion 373 Upper Castle Hayne AquiferUpper Castle Hayne AquiferUpper Castle Hayne AquiferUpper Castle Hayne AquiferUpper Castle Hayne Aquifer Legend Soil Mixing Area Groundwater Flow Direction Potential DNAPL Present Buildings with Vapor Intrusion Mitigation Systems Buildings with Sewer Ventilation System Former Location of Buildings 3 and 3B Extent of COCs in groundwaterabove current groundwater standards (site-wide data last collected October 2014) Surficial Aquifer Injection Well Upper Castle Hayne AquiferInjection Well Vertical Extraction Well Extraction Conveyance Line Horizontal Injection Well Screened Interval Horizontal Injection Well Casing Existing Extraction Conveyance Line New Extraction Conveyance Line Existing Horizontal Injection Well Screened Interval New Horizontal Injection Well Screened Interval Proposed Horizontal Injection Well Casing Existing Extraction Conveyance LineNew Extraction Conveyance LineExisting Horizontal Injection Well Screened Interval New Horizontal Injection Well Screened Interval Proposed Horizontal Injection Well Casing PCE ConcentrationsNCGWQS: 0.7 µg/L > 7,000 µg/L > 700 µg/L > 70 µg/L > 0.7 µg/L Note: The locations of site conditions are intended to be graphic visuals and not exact replications of site conditions. COC: Constituent of ConcernDNAPL: dense non-aqueous phase liquidPCE: tetrachloroetheneTCE: trichloroetheneVC: vinyl chlorideNCGWQS: North Carolina Groundwater Quality Standard ES100611223359MKE MCB_CamLej_Site_88_CSM_v53.ai 01-17-2023 tdaus N FIGURE 3Site 88 Conceptual Site ModelSite 88 Long-Term Monitoring Report FY 2022 MCB Camp Lejeune North Carolina !U !U !U !U !U !U IR88-MW0612.23 IR88-MW2519.68 IR88-MW0218.18 IR88-MW6016.49 IR88-MW5814.09 IR88-MW0517.69 141618MCHUGHBLVDV IR G I N I A D A R E DR C ST D ST A ST LUCY BREWER AVE POSTL N B ST 3B 3 43 HP57 37 Legend !U Surficial Aquifer Monitoring Well !A Upper Castle Hayne Aquifer Monitoring Well !<Middle Castle Hayne Aquifer Monitoring Well Potentiometric Surface Contours Groundwater Flow Direction Assumed GW Flow Direction (based upon historical data) Building with VIMS Soil Mixing Area Demolished Building Land Use Control BoundaryNon-Industrial Use Control Boundary (Soil) Intrusive Activities Control Boundary (Soil) Intrusive Activities Control Boundary (Groundwater) Industrial/Non-Industrial Use Control Boundary (Vapor Intrusion) Figure 4Potentiometric Surface MapsSite 88 Long-Term Monitoring Report FY 2022 MCB Camp LejeuneNorth Carolina \\DC1VS01\GISNAVYCLEAN\MIDLANT\MCBCAMPLEJEUNE\MAPFILES\LTM\2022\9000NVI5_SITE88\FIGURE_4_POTENTIOMETRIC_SURFACE_MAP.MXD AM038876 8/1/2023 4:52:09 PM !A !A !A !A !A !A !A !A!A !A !A !A !A !A !A !A !A !A !A !A IR88-MW70UCH11.16 IR88-MW15IW9.94 IR88-MW30IW10.34 IR88-MW49IW8.26 IR88-MW02IW11.33 IR88-MW20IW6.99 IR88-MW22IW8.66 IR88-MW48IW8.27 IR88-MW54IW*10.44IR88-MW56IW*9.73 IR88-MW05IW11.16 IR88-MW21IW8.51 IR88-MW63UCH3.54 IR88-RABITTMW1NM IR88-MW68UCH6.91 IR88-MW69UCH7.11 IR88-MW66UCH7.49 IR88-MW67UCH7.60 IR88-MW64UCH7.87* IR88-MW65UCH8.14 4 567 9 10118 MCHUGHBLVDV I R G I N I A D A R E D R C ST D ST A ST LUCY BREWER AVE POSTL N B ST 3B 3 43 HP57 37 Surficial Aquifer Upper Castle Hayne Aquifer ´0 320160 Feet 1 inch = 320 feet !<!< !< !< IR88-MW33DW10.59 IR88-MW18DW11.23IR88-MW47DW310.09 IR88-MW45DW310.14 25 B ST POST LN A ST VIRGINIA D A R E D R D ST C ST LUCY BREWER AVEMCHUGH BLVDMC HU GH B L V D C ST C ST 3 37 HP57 43 3B Middle Castle Hayne Aquifer Notes:- * = not used in contouring- 10.09 = Groundwater elevation. Elevations refer toNorth American Vertical Datum of 1988 (NAVD88).Units are in U.S. Survey Feet. - Date of water level survey: August 17, 2022- NM = Not Measured- Potentiometric surface contours were interpolated between monitoring well locations. Actual conditionsmay differ from those shown here. !(!( !(!( !(!(!(!( !(!(!(!( !(!(!( !(!( !(!(!( !(!( !(!(!( !(!(!(!( !(!(!( !( !U !U !U !U &<&<3B 3 43 37 IR88-MW06 IR88-MW60* IR88-MW25 IR88-MW02 IR88-MW58 IR88-MW05* 25 VIRGINIADAREDR P O S T L N Legend !(Surficial Aquifer Injection Well !(Upper Castle Hayne Aquifer Injection Well UST Excavation Area Soil Mixing AreaBuilding with VIMS Demolished Building Groundwater Flow Direction Monitoring Wells !U Surficial Aquifer - Downgradient of Treatment Area !U Surficial Aquifer - Upgradient of Treatment Area !U Surficial Aquifer - Within Treatment Area &<Surficial Aquifer - Sidegradient of Treatment Area !A Upper Castle Hayne Aquifer - Within Treatment Area !A Upper Castle Hayne Aquifer - Upgradient of Treatment Area Figure 5Zone 1 Well Location MapSite 88 Long-Term Monitoring Report FY 2022 MCB Camp LejeuneNorth Carolina \\DC1VS01\GISNAVYCLEAN\MIDLANT\MCBCAMPLEJEUNE\MAPFILES\LTM\2022\9000NVI5_SITE88\FIGURE_5_ZONE1_WELLLOCMAP.MXD AM038876 8/1/2023 4:56:16 PM !(!( !( !(!(!( !(!( !(!( !(!(!(!(!( !( !(!( !( !( !(!(!(!(!( !( !( !( !( !( !( !( !( !( !(!( !( !( !(!(!(!(!(!( !( !(!( !(!(!(!( !(!( !(!( !( !( !(!(!( !(!( !( !(!( !(!( !(!(!(!( !(!(!(!( !(!(!(!(!(!(!A !A !A !A !A IR88-MW02IW IR88-MW05IW IR88-RABITTMW1 IR88-MW30IW 25 VIRGINIADAREDR POST LN IR88-MW70UCH 3B 3 43 HP57 HP57 37 Surficial Aquifer Upper Castle Hayne Aquifer Land Use Control BoundaryNon-Industrial Use Control Boundary (Soil) Intrusive Activities Control Boundary (Soil) ´ 0 7035 Feet 1 inch = 70 feetNote:* Viscous fluid (suspected emulsified vegetable oil) observed in well inFebruary 2022 and August 2022. Well not sampled during either event. !? !? !? !? !? !? !? !? !A !A !<!< !< !< !A!<!< Zone 1 Zone 2 Zone 3 HIW-8HIW-9HIW-10 HIW-4HIW-5HIW-6HIW-7 HIW-2HIW-3 HIW-1 Bldg 3B Bldg 43 Bldg 3 IR88-MW54IW IR88-MW56IW IR88-MW18DW IR88-MW33DW IR88-MW45DW3IR88-MW47DW3 IR88-MW39MP-A*IR88-MW39MP-C*IR88-MW39MP-B* IR88-EX02MCH IR88-EX03MCH IR88-EX01MCH A ST MCHUGH B LVD C ST D STVIRGINIA D A R E D R PO S T L N IR88-EX04MCH IR88-EX05MCH IR88-EX06MCH IR88-EX07MCH IR88-EX08MCH ´ 0 15075 Feet 1 inch = 150 feet Figure 6Zone 2 Well Location MapSite 88 Long-Term Monitoring Report FY 2022 MCB Camp LejeuneNorth Carolina \\DC1VS01\GISNAVYCLEAN\MIDLANT\MCBCAMPLEJEUNE\MAPFILES\LTM\2022\9000NVI5_SITE88\FIGURE_6_ZONE_2_WELLLOCMAP.MXD AM038876 8/1/2023 4:44:39 PM Legend !A Upper Castle Hayne Aquifer Monitoring Well !<Middle Castle Hayne Aquifer Monitoring Well !?Vertical Extraction WellExtraction Conveyance LineHorizontal Injection Well CasingHorizontal Injection Well Screened Interval Groundwater Flow Direction Note:* Well abandoned in April 2022 and replaced in October 2022.IR88-MW39MP-A is screened with in the Upper Castle Hayne Aquifer. IR88-MW39MP-B and IR88-MW39MP-C are screened within the Middle Castle Hayne Aquifer. !( !( !( !( !( !( !( !( !( !( !( !( !( !( !A !A !A !A !A !A!A !A !A !A !A !A !AB ST C ST IR88-MW64UCH IR88-MW68UCH IR88-MW15IW IR88-MW21IW IR88-MW49IWIR88-MW69UCHIR88-MW63UCH IR88-MW48IW IR88-MW20IW IR88-MW66UCH IR88-MW67UCH IR88-MW22IW IR88-MW65UCH Figure 7Zone 3 Well Location MapSite 88 Long-Term Monitoring Report FY 2022MCB Camp Lejeune North Carolina´ 0 10050 Feet Legend !(Upper Castle Hayne Aquifer Injection Well Groundwater Flow DirectionMonitoring Wells !A Upper Castle Hayne Aquifer - Downgradient !A Upper Castle Hayne Aquifer - Sidegradient !A Upper Castle Hayne Aquifer - Upgradient of Biobarrier !A Upper Castle Hayne Aquifer - Within Biobarrier Area Land Use Control Boundary Intrusive Activities Control Boundary (Groundwater)Industrial/Non-Industrial Use Control Boundary (Vapor Intrusion) 1 inch = 80 feet \\DC1VS01\GISNAVYCLEAN\MIDLANT\MCBCAMPLEJEUNE\MAPFILES\LTM\2022\9000NVI5_SITE88\FIGURE_7_ZONE3_WELLLOCMAP.MXD PAYNEM 4/13/2023 6:36:38 PM !(!( !(!( !(!(!(!( !(!(!(!( !(!(!( !(!( !(!( !( !(!( !(!(!( !(!(!(!( !(!(!( !( &<&<!U !U !U !U IR88-MW58 IR88-MW05* IR88-MW06 IR88-MW60* IR88-MW25 IR88-MW02 VIRGINIA DARE DR POST LN 3B 3 43 HP57 37 Figure 8 Zone 1 Molarity Trends in Surficial Aquifer Site 88 Long-Term Monitoring Report FY 2022 MCB Camp Lejeune North Carolina´ 05025 Feet Legend !U Surficial Aquifer Monitoring Well !(Surficial Aquifer Injection Well Groundwater Flow Direction UST Excavation Area Former Building 25 Soil Mixing Area Land Use Control Boundary Non-Industrial Use Control Boundary (Soil) Intrusive Activities Control Boundary (Soil) 1 inch = 50 feet \\DC1VS01\GISNAVYCLEAN\MIDLANT\MCBCAMPLEJEUNE\MAPFILES\LTM\2022\9000NVI5_SITE88\FIGURE_8_ZONE_1MOLARITYTRENDS_SURF.MXD ARTHURR 6/15/2023 12:49:05 PM Notes: IR88-MW02 = COC exceedance of Active Remediation Goal (ARG)* Viscous fluid (suspected emulsified vegetable oil) observed in well in February 2022 and August 2022. Well not sampled during either event. Open circles on graphs indicate results below laboratory detection limits. Red dashed lines on graphs indicate injection events. μmol/L = micromole(s) per liter cells/mL = cells per milliliter cis-1,2-DCE = cis-1,2-dichloroethene DHC = Dehalococcoides sp PCE = tetrachloroetheneTCE = trichloroetheneVC = vinyl chloride IR88-MW02 230425174649_b91e4afe 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 1999 2003 2007 2011 2015 2019 2023Concentration (μmol/L),5í0: 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 DHC (cells/ml)Total VOCs PCE TCE FLVíí'&( VC Benzene Naphthalene DHC 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 1999 2003 2007 2011 2015 2019 2023Concentration (μmol/L),5í0: 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 DHC (cells/ml)Total VOCs PCE TCE FLVíí'&( VC Benzene Naphthalene DHC 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 1999 2003 2007 2011 2015 2019 2023Concentration (μmol/L),5í0: 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 DHC (cells/ml)Total VOCs PCE TCE FLVíí'&( VC Benzene Naphthalene DHC 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 1999 2003 2007 2011 2015 2019 2023Concentration (μmol/L),5í0: 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 DHC (cells/ml)Total VOCs PCE TCE FLVíí'&( VC Benzene Naphthalene DHC 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 1999 2003 2007 2011 2015 2019 2023Concentration (μmol/L),5í0: 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 DHC (cells/ml)Total VOCs PCE TCE FLVíí'&( VC Benzene Naphthalene DHC 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 1999 2003 2007 2011 2015 2019 2023Concentration (μmol/L),5í0: 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 DHC (cells/ml)Total VOCs PCE TCE FLVíí'&( VC Benzene Naphthalene DHC !(!( !(!( !(!(!(!( !(!(!(!( !(!(!( !(!( !(!( !( !(!( !(!(!( !(!(!(!( !(!(!( !( !U !U !U !U &<&<IR88-MW58 IR88-MW05* IR88-MW06 IR88-MW60* IR88-MW25 IR88-MW02 VIRGINIA DARE DR POST LN 3B 3 43 HP57 37 Figure 9 Benzene and Naphthalene Trends in Surficial Aquifer Site 88 Long-Term Monitoring Report FY 2022 MCB Camp Lejeune North Carolina´ 05025 Feet Legend !U Surficial Aquifer Monitoring Well !(Surficial Aquifer Injection Well Groundwater Flow Direction UST Excavation Area Former Building 25 Soil Mixing Area Land Use Control Boundary Non-Industrial Use Control Boundary (Soil) Intrusive Activities Control Boundary (Soil) 1 inch = 50 feet \\DC1VS01\GISNAVYCLEAN\MIDLANT\MCBCAMPLEJEUNE\MAPFILES\LTM\2022\9000NVI5_SITE88\FIGURE_9_BENZENE_NAPHTHALENE_TRENDS_SURF.MXD ARTHURR 6/15/2023 12:40:06 PM Notes: * Viscous fluid (possibly emulsified vegetable oil) observed in well in February 2022 and August 2022. Well not sampled during either event.Open circles indicate results below laboratory detection limits. μmol/L = micromole(s) per liter 230425174649_b91e4afe 0.001 0.01 0.1 1 10 100 1999 2003 2007 2011 2015 2019 2023Concentration (μmol/L)Benzene Naphthalene ,5í0: 0.001 0.01 0.1 1 10 100 1999 2003 2007 2011 2015 2019 2023Concentration (μmol/L)Benzene Naphthalene ,5í0: 0.001 0.01 0.1 1 10 100 1999 2003 2007 2011 2015 2019 2023Concentration (μmol/L)Benzene Naphthalene ,5í0: 0.001 0.01 0.1 1 10 100 1999 2003 2007 2011 2015 2019 2023Concentration (μmol/L)Benzene Naphthalene ,5í0: !(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!A!A!A!A!AIR88-MW02IWIR88-RABITTMW1IR88-MW05IWIR88-MW30IWPOSTLNVIRGINIA DARE DRIR88-MW70UCH3B343HP5737Figure 10Zone 1 Molarity Trends in UCH AquiferSite 88 Long-Term Monitoring Report FY 2022MCB Camp LejeuneNorth Carolina´05025FeetLegend!AUpper Castle Hayne Aquifer Monitoring Well!(Upper Castle Hayne Aquifer Injection WellGroundwater Flow DirectionUST Excavation AreaFormer Building 25Land Use Control BoundaryNon-Industrial Use Control Boundary (Soil)Intrusive Activities Control Boundary (Soil)1 inch = 50 feet \\DC1VS01\GISNAVYCLEAN\MIDLANT\MCBCAMPLEJEUNE\MAPFILES\LTM\2022\9000NVI5_SITE88\FIGURE_10_ZONE1MOLARITYTRENDS_UCH.MXD PAYNEM 4/18/2023 11:21:30 AMNote: - Constituent of concern exceedance of Active Remediation Goalμmol/L = micromole(s) per litercells/mL = cells per millilitercis-1,2-DCE = cis-1,2-dichloroetheneDHC = Dehalococcoides spPCE = tetrachloroetheneTCE = trichloroetheneVC = vinyl chlorideIR88-MW30IW230425174649_b91e4afeOpen circles on graphs indicate results below laboratory detection limits.Red dashed lines on graphs indicate injection events. 0.001 0.01 0.1 1 10 100 1,00010,0001999 2003 2007 2011 2015 2019 2023Concentration (μmol/L)Total VOCs PCE TCEFLVíí'&(VC Benzene Naphthalene'+&,5í0:,: 0.1 1 10 100 1,000 10,000 100,0001,000,000'+& FHOOVPO 0.001 0.01 0.1 1 10 100 1,00010,0001999 2003 2007 2011 2015 2019 2023Concentration (μmol/L)Total VOCs PCE TCEFLVíí'&(VC Benzene Naphthalene'+&,5í0:,: 0.1 1 10 100 1,000 10,000 100,0001,000,000'+& FHOOVPO 0.001 0.01 0.1 1 10 100 1,00010,0001999 2003 2007 2011 2015 2019 2023Concentration (μmol/L)Total VOCs PCE TCEFLVíí'&(VC Benzene Naphthalene'+&,5í0:,: 0.1 1 10 100 1,000 10,000 100,0001,000,000'+& FHOOVPO 0.001 0.01 0.1 1 10 100 1,00010,0001999 2003 2007 2011 2015 2019 2023Concentration (μmol/L)Total VOCs PCE TCEFLVíí'&(VC Benzene Naphthalene'+&,5í0:8&+ 0.1 1 10 100 1,000 10,000 100,0001,000,000'+& FHOOVPO 0.001 0.01 0.1 1 10 100 1,00010,0001999 2003 2007 2011 2015 2019 2023Concentration (μmol/L)Total VOCs PCE TCEFLVíí'&(VC Benzene Naphthalene'+&,5í5$%,770: 0.1 1 10 100 1,000 10,000 100,0001,000,000'+& FHOOVPO !(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!A!A!A!A!AIR88-RABITTMW1IR88-MW02IWIR88-MW05IWIR88-MW30IWIR88-MW70UCHPOSTLNVIRGINIA DARE DR3B343HP5737Figure 11Benzene and Naphthalene Trends in UCH AquiferSite 88 Long-Term Monitoring Report FY 2022MCB Camp LejeuneNorth Carolina´05025FeetLegend!AUpper Castle Hayne Aquifer Monitoring Well!(Upper Castle Hayne Aquifer Injection WellGroundwater Flow DirectionUST Excavation AreaFormer Building 25Land Use Control BoundaryNon-Industrial Use Control Boundary (Soil)Intrusive Activities Control Boundary (Soil)1 inch = 50 feet \\DC1VS01\GISNAVYCLEAN\MIDLANT\MCBCAMPLEJEUNE\MAPFILES\LTM\2022\9000NVI5_SITE88\FIGURE_11_BENZENE_NAPHTHALENE_TRENDS_UCH.MXD PAYNEM 4/18/2023 11:38:29 AMNotes:μmol/L = micromole(s) per liter230425174649_b91e4afeOpen circles on graphs indicate resultsbelow laboratory detection limits. 0.001 0.01 0.1 1 101001999 2003 2007 2011 2015 2019 2023Concentration (μmol/L)Benzene Naphthalene,5í0:,: 0.001 0.01 0.1 1 101001999 2003 2007 2011 2015 2019 2023Concentration (μmol/L)Benzene Naphthalene,5í0:,: 0.001 0.01 0.1 1 101001999 2003 2007 2011 2015 2019 2023Concentration (μmol/L)Benzene Naphthalene,5í0:,: 0.001 0.01 0.1 1 101001999 2003 2007 2011 2015 2019 2023Concentration (μmol/L)Benzene Naphthalene,5í0:8&+ 0.001 0.01 0.1 1 101001999 2003 2007 2011 2015 2019 2023Concentration (μmol/L)Benzene Naphthalene,5í5$%,770: !A !A!A !? !? !? !? !? !? !? !? Zone 1 Zone 2 Zone 3 HIW-8 HIW-9 HIW-10 HIW-4 HIW-5 HIW-6 HIW-7 HIW-2 HIW-3 HIW-1 Bldg 3B Bldg 43 Bldg 3 IR88-MW54IW IR88-MW56IW IR88-MW39MP-A IR88-EX02MCH IR88-EX03MCH IR88-EX01MCH A ST MCHUGH BLVD C S T D ST VIRGINIA DAR E DR P O S T L N IR88-EX04MCH IR88-EX05MCH IR88-EX06MCH IR88-EX07MCH IR88-EX08MCH ´ 015075 Feet 1 inch = 150 feet Figure 12 Zone 2 Trends in UCH Aquifer Site 88 Long-Term Monitoring Report FY 2022 MCB Camp Lejeune North Carolina \\DC1VS01\GISNAVYCLEAN\MIDLANT\MCBCAMPLEJEUNE\MAPFILES\LTM\2022\9000NVI5_SITE88\FIGURE_12_ZONE_2MOLARITYTRENDS_UCH.MXD AM038876 8/1/2023 4:58:13 PM Legend !A Upper Castle Hayne Aquifer Monitoring Well !?Vertical Extraction Well Extraction Conveyance Line Horizontal Injection Well Casing Horizontal Injection Well Screened Interval Groundwater Flow Direction Notes: Open circles indicate results below laboratory detection limits. Red dashed lines indicate injection event start and end dates. μg/L = microgram(s) per liter cis-1,2-DCE = cis-1,2-dichloroethene PCE = tetrachloroethene TCE = trichloroethene VC = vinyl chloride 230425174649_b91e4afe 0.1 1 10 100 1000 10000 100000 1000000 2008 2010 2012 2014 2016 2018 2020 2022Concentration (μg/L)PCE TCE FLVíí'&(VC ,5í0:,: 0.1 1 10 100 1000 10000 100000 1000000 2008 2010 2012 2014 2016 2018 2020 2022Concentration (μg/L)PCE TCE FLVíí'&(VC ,5í0:,: 0.1 1 10 100 1000 10000 100000 1000000 2008 2010 2012 2014 2016 2018 2020 2022Concentration (μg/L)PCE TCE FLVíí'&(VC ,5í0:03í$ !< !< !<!< !? !? !? !? !? !? !? !?!<!< Zone 1 Zone 2 Zone 3 HIW-8 HIW-9 HIW-10 HIW-4 HIW-5 HIW-6 HIW-7 HIW-2 HIW-3 HIW-1 Bldg 3B Bldg 43 Bldg 3 IR88-MW18DW IR88-MW33DW IR88-MW45DW3 IR88-MW47DW3 IR88-MW39MP-C IR88-MW39MP-B IR88-EX02MCH IR88-EX03MCH IR88-EX01MCH A ST MCHUGH BLVD C S T D ST VIRGINIA DAR E DR P O S T L N IR88-EX04MCH IR88-EX05MCH IR88-EX06MCH IR88-EX07MCH IR88-EX08MCH ´ 015075 Feet 1 inch = 150 feet Figure 13 Zone 2 Trends in MCH Aquifer Site 88 Long-Term Monitoring Report FY 2022 MCB Camp Lejeune North Carolina \\DC1VS01\GISNAVYCLEAN\MIDLANT\MCBCAMPLEJEUNE\MAPFILES\LTM\2022\9000NVI5_SITE88\FIGURE_13_ZONE_2MOLARITYTRENDS_MCH.MXD AM038876 8/2/2023 10:24:56 AM Legend !<Middle Castle Hayne Aquifer Monitoring Well !?Vertical Extraction Well Extraction Conveyance Line Horizontal Injection Well Casing Horizontal Injection Well Screened Interval Groundwater Flow Direction Notes: Open circles indicate results below laboratory detection limits. Red dashed lines indicate injection event start and end dates. μg/L = microgram(s) per liter cis-1,2-DCE = cis-1,2-dichloroethene PCE = tetrachloroethene TCE = trichloroethene VC = vinyl chloride 230425174649_b91e4afe 0.01 0.1 1 10 100 1000 10000 100000 1000000 2005 2009 2013 2017 2021Concentration (μg/L)PCE TCE FLVíí'&(VC ,5í0:D: 0.01 0.1 1 10 100 1000 10000 100000 1000000 2005 2009 2013 2017 2021Concentration (μg/L)PCE TCE FLVíí'&(VC ,5í0:D: 0.01 0.1 1 10 100 1000 10000 100000 1000000 2005 2009 2013 2017 2021Concentration (μg/L)PCE TCE FLVíí'&(VC ,5í0:D: 0.01 0.1 1 10 100 1000 10000 100000 1000000 2005 2009 2013 2017 2021Concentration (μg/L)PCE TCE FLVíí'&(VC ,5í0:D: 0.01 0.1 1 10 100 1000 10000 100000 1000000 Concentration (μg/L)PCE TCE FLVíí'&(VC ,5í0:03í% 2008 2010 2012 2014 2016 2018 2020 2022 0.01 0.1 1 10 100 1000 10000 100000 1000000 Concentration (μg/L)PCE TCE FLVíí'&(VC ,5í0:03í& 2008 2010 2012 2014 2016 2018 2020 2022 !( !( !( !( !( !( !( !( !( !( !( !( !( !( !A !A !A !A !A !A!A !A !A !A !A !A !A IR88-MW64UCH IR88-MW68UCH IR88-MW15IW IR88-MW21IW IR88-MW49IW IR88-MW69UCHIR88-MW63UCH IR88-MW48IW IR88-MW20IW IR88-MW66UCH IR88-MW67UCH IR88-MW22IW IR88-MW65UCHB ST C S T Figure 14 Zone 3 Molarity Trends in UCH Aquifer Site 88 Long-Term Monitoring Report FY 2022 MCB Camp Lejeune North Carolina´ 08040 Feet Legend !A Upper Castle Hayne Aquifer Monitoring Well !(Upper Castle Hayne Aquifer Injection Well Groundwater Flow Direction 1 inch = 80 feet \\DC1VS01\GISNAVYCLEAN\MIDLANT\MCBCAMPLEJEUNE\MAPFILES\LTM\2022\9000NVI5_SITE88\FIGURE_14_ZONE_3MOLARITYTRENDS_UCH.MXD ARTHURR 6/15/2023 12:33:48 PM Notes: Open circles indicate results below laboratory detection limits. Red dashed lines indicate injection events. μmol/L = micromole(s) per litercells/mL = cells per milliliter cis-1,2-DCE = cis-1,2-dichloroethene DHC = Dehalococcoides sp PCE = tetrachloroethene TCE = trichloroethene VC = vinyl chloride 230425174649_b91e4afe 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021Concentration (μmol/L)Total VOCs PCE TCE FLVíí'&( VC Benzene Naphthalene '+& ,5í0:,: 0.01 0.1 1 10 100 1,000 10,000 100,000 '+& FHOOVPO 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021Concentration (μmol/L)Total VOCs PCE TCE FLVíí'&( VC Benzene Naphthalene '+& ,5í0:,: 0.01 0.1 1 10 100 1,000 10,000 100,000 '+& FHOOVPO 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021Concentration (μmol/L)Total VOCs PCE TCE FLVíí'&( VC Benzene Naphthalene '+& ,5í0:,: 0.01 0.1 1 10 100 1,000 10,000 100,000 '+& FHOOVPO 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021Concentration (μmol/L)Total VOCs PCE TCE FLVíí'&( VC Benzene Naphthalene '+& ,5í0:,: 0.01 0.1 1 10 100 1,000 10,000 100,000 '+& FHOOVPO 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021Concentration (μmol/L)Total VOCs PCE TCE FLVíí'&( VC Benzene Naphthalene '+& ,5í0:8&+ 0.01 0.1 1 10 100 1,000 10,000 100,000 '+& FHOOVPO 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021Concentration (μmol/L)Total VOCs PCE TCE FLVíí'&( VC Benzene Naphthalene '+& ,5í0:,: 0.01 0.1 1 10 100 1,000 10,000 100,000 '+& FHOOVPO 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021Concentration (μmol/L)Total VOCs PCE TCE FLVíí'&( VC Benzene Naphthalene '+& ,5í0:8&+ 0.01 0.1 1 10 100 1,000 10,000 100,000 '+& FHOOVPO Upper Castle HayneAquifer Monitoring Well Upper Castle Hayne Aquifer Injection Well Well Sampled Legend Groundwater Flow Direction Figure 15 COC ConcentraƟons at IR88-MW22IW Transect Site 88 Long-Term Monitoring Report FY 2022 MCB Camp Lejeune North Carolina !A !A !A !A !A !A !A !A !A !A !A IR88-MW49IW MW20IW IR88-MW22IW IR88-MW48IW IR88-MW21IW W68UCH W69UCH IR88-MW66UCH IR88-MW67UCH IR88-MW64UCH IR88-MW65UCH CST B S T IR88IR88-MW-MW22IW22IWIR88-MW22IW !( !(!(!(!(!(!(!(!(!(!(!(!(!(!( ´ !A !A !A IR88-MW22IW IR88-MW48IW cis-1,2-DCE VC TOC DHC TCE PCE 230425174649_b91e4afe 0.00 40.00 80.00 120.00 160.00 -20 -10 0 10 20cis-1,2-DCEConcentraƟon,μg/LDistance, Feet Dec-19 Apr-20 Oct-20 Sep-21 Mar-22 Aug-22 Groundwater Flow MW22IWMW64UCHMW66UCH0.00 25.00 50.00 75.00 100.00 -20 -10 0 10 20VC ConcentraƟon,μg/LDistance, Feet Dec-19 Apr-20 Oct-20 Sep-21 Mar-22 Aug-22 Groundwater Flow MW22IWMW64UCHMW66UCH0.00 10.00 20.00 30.00 40.00 50.00 -20 -10 0 10 20TOC ConcentraƟon,μg/LDistance, Feet Dec-19 Apr-20 Oct-20 Sep-21 Mar-22 Aug-22 Groundwater Flow MW22IWMW64UCHMW66UCH0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 160.00 -20 -10 0 10 20TCE ConcentraƟon, μg/LDistance, Feet Dec-19 Apr-20 Oct-20 Sep-21 Mar-22 Aug-22Denotes a Non-Detect Result MW22IWGroundwater Flow MW64UCHMW66UCH0.00 10.00 20.00 30.00 40.00 50.00 -20 -10 0 10 20PCEConcentraƟon, μg/LDistance, Feet Dec-19 Apr-20 Oct-20 Sep-21 Mar-22 Aug-22MW22IWDenotes a Non-DetectResult MW64UCHMW66UCHGroundwater Flow 0 10000 20000 30000 -20 -10 0 10 20DHC,cells/mLDistance, FeetDec-19 Apr-20 Oct-20 Sep-21 Mar-22 Aug-22 Groundwater Flow MW22IWMW64UCHMW66UCHCurrent GW Standard for PCE = 0.7μg/L Current GW Standard for TCE = 3μg/L Current GW Standard for cis-1,2-DCE = 70 μg/L Current GW Standard for VC = 0.03μg/L Upper Castle HayneAquifer Monitoring Well Well Sampled Legend IR88IR88-MW-MW48IW48IWIR88-MW48IW Groundwater Flow Direction !A !A !A !A !A !A !A !A !A !A !A IR88-MW49IW MW20IW IR88-MW22IW IR88-MW48IW IR88-MW21IW W68UCH W69UCH IR88-MW66UCH IR88-MW67UCH IR88-MW64UCH IR88-MW65UCH CST B S T Figure 16 COC ConcentraƟons at IR88-MW48IW Transect Site 88 Long-Term Monitoring Report FY 2022 MCB Camp Lejeune North Carolina !(!(!(!(!(!(!(!(!(!(!(!(!(!( ´Upper Castle Hayne Aquifer Injection Well!( !A !A !A IR88-MW22IW IR88-MW48IW cis-1,2-DCE VC TOC DHC TCE 230425174649_b91e4afe 0.00 10.00 20.00 30.00 40.00 50.00 60.00 -20 -10 0 10 20cis-1,2-DCE ConcentraƟon,μg/LDistance, Feet Dec-19 Apr-20 Oct-20 Sep-21 Mar-22 Aug-22 Groundwater Flow MW48IWMW65UCHMW67UCH0.00 0.10 0.20 0.30 -20 -10 0 10 20VC ConcentraƟon,μg/LDistance, Feet Dec-19 Apr-20 Oct-20 Sep-21 Mar-22 Aug-22 Groundwater Flow MW48IWMW65UCHMW67UCHDenotes a Non-Detect Result 0.00 10.00 20.00 30.00 -20 -10 0 10 20TOC ConcentraƟon,μg/LDistance, Feet Dec-19 Apr-20 Oct-20 Sep-21 Mar-22 Aug-22 Groundwater Flow MW48IWMW65UCHMW67UCH0 10 20 30 40 50 -20 -10 0 10 20DHC, cells/day Distance, Feet Dec-19 Apr-20 Oct-20 Sep-21 Mar-22 Aug-22 Groundwater Flow MW48IWMW65UCHMW67UCH0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 -20 -10 0 10 20TCE ConcentraƟon,μg/LDistance, Feet Dec-19 Apr-20 Oct-20 Sep-21 Mar-22 Aug-22MW48IWGroundwater Flow MW65UCHMW67UCHDenotes a Non-Detect Result Current GW Standard for TCE = 3μg/L Current GW Standard for cis-1,2-DCE = 70 μg/L Current GW Standard for VC = 0.03μg/L !( !( !( !( !( !( !( !( !( !( !( !( !( !( !A !A !A !A !A !A!A !A !A !A !A !A !A IR88-MW64UCH IR88-MW68UCH IR88-MW15IW IR88-MW21IW IR88-MW49IW IR88-MW69UCHIR88-MW63UCH IR88-MW48IW IR88-MW20IW IR88-MW66UCH IR88-MW67UCH IR88-MW22IW IR88-MW65UCHB STC S T Figure 17 Downgradient Molarity Trends in UCH Aquifer Site 88 Long-Term Monitoring Report FY 2022 MCB Camp Lejeune North Carolina´ 08040 Feet Legend !A Upper Castle Hayne Aquifer Monitoring Well !(Upper Castle Hayne Aquifer Injection Well Groundwater Flow Direction 1 inch = 80 feet \\DC1VS01\GISNAVYCLEAN\MIDLANT\MCBCAMPLEJEUNE\MAPFILES\LTM\2022\9000NVI5_SITE88\FIGURE_17_ZONE_3DOWNGRADIENTMOLARITYTRENDS_UCH.MXD ARTHURR 6/15/2023 12:36:50 PM Notes: Open circles indicate results below laboratory detection limits. Red dashed lines indicate injection events. μmol/L = micromole(s) per litercells/mL = cells per milliliter cis-1,2-DCE = cis-1,2-dichloroethene DHC = Dehalococcoides sp PCE = tetrachloroethene TCE = trichloroethene VC = vinyl chloride 230425174649_b91e4afe 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021Concentration (μmol/L)Total VOCs PCE TCE FLVíí'&(VC Benzene Naphthalene '+& ,5í0:,: 0.01 0.1 1 10 100 1,000 10,000 100,000 '+& FHOOVPO 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021Concentration (μmol/L)Total VOCs PCE TCE FLVíí'&(VC Benzene Naphthalene '+& ,5í0:8&+ 0.01 0.1 1 10 100 1,000 10,000 100,000 '+& FHOOVPO 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021Concentration (μmol/L)Total VOCs PCE TCE FLVíí'&(VC Benzene Naphthalene '+& ,5í0:8&+ 0.01 0.1 1 10 100 1,000 10,000 100,000 '+& FHOOVPO 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021Concentration (μmol/L)Total VOCs PCE TCE FLVíí'&(VC Benzene Naphthalene '+& ,5í0:8&+ 0.01 0.1 1 10 100 1,000 10,000 100,000 '+& FHOOVPO 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021Concentration (μmol/L)Total VOCs PCE TCE FLVíí'&(VC Benzene Naphthalene '+& ,5í0:8&+ 0.01 0.1 1 10 100 1,000 10,000 100,000 '+& FHOOVPO 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021Concentration (μmol/L)Total VOCs PCE TCE FLVíí'&(VC Benzene Naphthalene '+& ,5í0:8&+ 0.01 0.1 1 10 100 1,000 10,000 100,000 '+& FHOOVPO !U !U IR88-MW58* IR88-MW03* 3B 3 43 HP57 37MCH UGHBLVDD ST VIRGINI A D A R E D R C ST LUCY BREWER AVE POSTLN Figure 18VIMS Building Installation LocationsSite 88 Long-Term Monitoring Report FY 2022MCB Camp LejeuneNorth Carolina´ 0 200100 Feet Legend !U Surficial Aquifer Monitoring Well Sanitary Sewer Utility Line Buildings Demolished Occupied Building With Active VIMS and Monitoring 1 inch = 200 feet \\dc1vs01\GISNavyClean\MIDLANT\MCBCampLejeune\MapFiles\LTM\2022\9000NVI5_Site88\Figure_18_VIMS_Installations_Surficial.mxd8/2/2023AM038876 Note:* Groundwater level data were collected fromwell to determine whether a high water tableaffected VIMS performance. LEGEND - - -PIPING 0 SUCTION NODENIMS EXHAUST SAMPLE LOCATIONS (GE#) @ SUCTION FAN � SUBSLAB PROBE AND SOIL GAS SAMPLING LOCATION NOTES: 1. FANS ARE ATTIC MOUNTED. 2. ALL VIMS EXHAUST SAMPLES (GE#) ARE COLLECTED FROM EXHAUST PORTS LOCATED ON THE PIPING COMING FROM THE CORRESPONDING SUCTION PIT (S#); i.e. GE01 IS COLLECTE FROM S1. 3. SAMPLE LOCATIONS ARE SUBJECT TO CHANGE BASED ON BUILDING CONDITIONS AT THE TIME OF SAMPLING. NOTE: BUILDING LAYOUT FROM DRAWING PREPARED BY CH2MHILL, DATED OCTOBER, 2010 ltarheel\Proj\EBL\Navy Clean\Vapor lntrusion\VIMS\Design\CADD\Building37\Figure 19 _Building37 _Round_23 _ OMM_ SAP.dwg ] 20 0 10 11111 - 111111 inch = 20 ft. 20 Figure 19 VIMS Fan and Piping - Building 37 Site 88 Long-Term Monitoring Report FY 2022 MCB Camp Lejeune North Carolina c'12ffl: LEGEND PIPING @ SUCTION NODENIMS EXHAUST SAMPLE LOCATIONS (GE#) @ SUCTION FAN ¾ SUBSLAB PROBE AND SOIL GAS SAMPLING LOCATION NOTES: 1. FAN IS ATTIC MOUNTED. I 2. ALL VIMS EXHAUST SAMPLES (GE#) ARE COLLECTED FROM EXHAUST PORTS LOCATED 1----1 ON THE PIPING COMING FROM THE CORRESPONDING SUCTION PIT (S#); i.e. GE01 IS COLLECTE FROM S1. 3. SAMPLE LOCATIONS ARE SUBJECT TO CHANGE BASED ON BUILDING CONDITIONS AT THE TIME OF SAMPLING. NOTE: BUILDING LAYOUT FROM DRAWING PREPARED BY CH2MHILL, DATED OCTOBER, 2010 \tarheel\Proj\EBL \Navy Clean\Vapor I ntrusion\VIMS\Design\CADD\Building43\Figure7 _ Bu ilding43_ Round_ 19_ OMM _ SAP .dwg ¾ SG-17 -SG-06 -7 ¾L _________ ---®I 3" PVC S1/GE1 @ HS 5000 10 0 5 11111 - 11111111 inch = 10 ft. 10 Figure 20 VIMS Fan and Piping - Building 43 Site 88 Long-Term Monitoring Report FY 2022 MCB Camp Lejeune North Carolina "S "S "S "S "J "J MH-1 MH-2 MH-3HP57 BlowerStaging Area Building 37 COMPANY OFFICE RESTROOM IR88-HP57-SV06 HP57 127 101 126 102 SO U T H E A S T HV A C CUBES 122 CUBE DESK CONFERENCE ROOM HARD W A L L OFFICE STAIRS LOUNGE 118 108 SO U T H W E S T HV A C 111 110 115 113 100 125 103 104 123 JANITOR 2 JANITOR 1 LAUNDRY119 109 112 114 116 IR88-HP57-SV01 IR88-HP57-SV02 IR88-HP57-SV03 IR88-SG19 IR88-SG20 Figure 21Building HP57Site 88 Long-Term Monitoring Report FY 2022MCB Camp Lejeune North Carolina´ 0 25 50 Feet 1 inch = 25 feet \\dc1vs01\GISNavyClean\MIDLANT\MCBCampLejeune\MapFiles\LTM\2022\9000NVI5_Site88\Figure_21_Conceptual_Layout_Building_HP57.mxd12/12/2023AM038876 Legend !(Manhole Location "S Sample Port "J Subslab Soil Gas Sample LocationBuilding Layout Building with VIMS HP57 Sewer Ventilation Line Building HP57 Blower Note: MH - Manhole Location Attachment 1 Monitoring Well Construction and Gauging Data Attachment 1. Monitoring Well Construction and Gauging Data Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina IR88-MW02 24.94 3 - 18 18 7.75 17.19 6.76 18.18 IR88-MW05 23.97 8 - 23 23 6.74 17.23 6.28 17.69 Viscous fluid (possibly EVO) observed in well in February 2022 and August 2022. Well not sampled during either event. IR88-MW06 23.13 8 - 23 23 11.71 11.42 10.90 12.23 IR88-MW25 24.71 15 - 20 20 5.82 18.89 5.03 19.68 IR88-MW58 23.11 5 - 20 21 9.94 13.17 9.02 14.09 IR88-MW60 24.98 10 - 20 20 10.41 14.57 8.49 16.49 Viscous fluid (possibly EVO) observed in well in February 2022 and August 2022. Well not sampled during either event. IR88-MW02IW 25.18 45 - 50 50 14.06 11.12 13.85 11.33 IR88-MW05IW 24.45 45 - 50 50 12.42 12.03 13.29 11.16 IR88-MW30IW 24.95 35 - 40 40 13.50 11.45 14.61 10.34 IR88-MW70UCH 25.30 45 - 50 50 14.15 11.15 14.14 11.16 IR88-RABBITMW1 NA 45.75 - 47.25 47.25 11.30 NA 12.67 NA IR88-MW54IWb 23.23 49.5 - 54.5 54.5 11.21 12.02 12.79 10.44 Groundwater was sampled via Hydrasleeve instead of low-flow. IR88-MW56IWb 21.31 45-50 50 10.42 10.89 11.58 9.73 Permanganate observed in well in February 2022 and a sample was not collected. Groundwater was sampled via Hydrasleeve instead of low-flow in August 2022. Surficial Aquifer Depth to Water (ft BTOC) Groundwater Elevationa (ft) UCH Aquifer Zone 2 UCH Aquifer Zone 1 Notes FY 2022 Quarter 2 Depth to Water (ft BTOC) Groundwater Elevationa (ft) FY 2022 Quarter 4 Well ID Top of Casing Elevationa (ft) Screened Interval (ft bgs) Total Well Depth (ft bgs) 1 of 3 Attachment 1. Monitoring Well Construction and Gauging Data Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Depth to Water (ft BTOC) Groundwater Elevationa (ft) Zone 1 Notes FY 2022 Quarter 2 Depth to Water (ft BTOC) Groundwater Elevationa (ft) FY 2022 Quarter 4 Well ID Top of Casing Elevationa (ft) Screened Interval (ft bgs) Total Well Depth (ft bgs) IR88-MW39MP-A NM 76 - 81 81 NM NM NM NM This well was part of a multiport and did not have individual top of casing elevations; therefore, depth to water measurements were not collected in Q2 2022. Well was abandoned in April 2022 and replaced October 2022. IR88-MW18DWb 22.59 80 - 85 85 13.06 9.53 11.36 11.23 Groundwater was sampled via Hydrasleeve instead of low-flow. IR88-MW33DWb 22.13 78 - 83 83 5.56 16.57 11.54 10.59 Groundwater was sampled via Hydrasleeve instead of low-flow. IR88-MW45DW3b 21.65 95 - 100 100 13.58 8.07 11.51 10.14 Groundwater was sampled via Hydrasleeve instead of low-flow. IR88-MW47DW3b 21.85 95 - 100 100 14.37 7.48 11.76 10.09 Groundwater was sampled via Hydrasleeve instead of low-flow. IR88-MW39MP-B NM 96 - 101 101 NM NM NM NM IR88-MW39MP-C NM 116 - 121 121 NM NM NM NM IR88-MW15IW 21.50 45 - 50 50 12.65 8.85 11.56 9.94 IR88-MW20IW 23.70 45 - 50 50 NM NM 16.71 6.99 IR88-MW21IWb 25.45 45 - 50 50 17.70 7.75 16.94 8.51 Groundwater was sampled via Hydrasleeve instead of low-flow. IR88-MW22IW 25.17 45 - 50 50 17.30 7.87 16.51 8.66 IR88-MW48IW 24.93 45 - 50 50 16.49 8.44 16.66 8.27 UCH Aquifer Zone 3 These wells were part of a multiport and did not have individual top of casing elevations; therefore, depth to water measurements were not collected in Q2 2022. Wells were abandoned in April 2022 and replaced October 2022. MCH Aquifer 2 of 3 Attachment 1. Monitoring Well Construction and Gauging Data Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Depth to Water (ft BTOC) Groundwater Elevationa (ft) Zone 1 Notes FY 2022 Quarter 2 Depth to Water (ft BTOC) Groundwater Elevationa (ft) FY 2022 Quarter 4 Well ID Top of Casing Elevationa (ft) Screened Interval (ft bgs) Total Well Depth (ft bgs) IR88-MW49IWb 23.88 45 - 50 50 16.37 7.51 15.62 8.26 Groundwater was sampled via Hydrasleeve instead of low-flow. IR88-MW63UCHb 20.85 45 - 50 50 18.05 2.80 17.31 3.54 Groundwater was sampled via Hydrasleeve instead of low-flow. IR88-MW64UCH 25.12 47 - 57 57 18.07 7.05 17.25 7.87 IR88-MW65UCH 23.92 41-51 51 16.68 7.24 15.78 8.14 IR88-MW66UCH 24.64 39.5 - 49.5 50 17.89 6.75 17.15 7.49 IR88-MW67UCH 23.23 41 - 51 51 16.40 6.83 15.63 7.60 IR88-MW68UCHb 22.55 39.5 - 49.5 50 16.31 6.24 15.64 6.91 Groundwater was sampled via Hydrasleeve instead of low-flow. IR88-MW69UCHb 22.62 39.5 - 49.5 50 16.27 6.35 15.51 7.11 Groundwater was sampled via Hydrasleeve instead of low-flow. Notes: Depth to water measurements for Quarter 2 were collected February 11, 2022. Depth to water measurements for Quarter 4 were collected August 17, 2022. a Elevations refer to North American Vertical Datum of 1988 (NAVD88). Units are in U.S. Survey Feet. b Groundwater samples were collected via Hydrasleeve for wells sampled for VOCs only. bgs = below ground surface LTM = long-term monitoring EVO = emulsified vegetable oil NA = not available ft = foot(feet)NM = not measured FY = fiscal year UCH = Upper Castle Hayne BTOC = below top of casing msl = mean sea level 3 of 3 Attachment 2 Water Quality Parameters Attachment 2. Water Quality Parameters Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Temperature (oC) Specific Conductivity (mS/cm) pH (SU) Dissolved Oxygen (mg/L) ORP (mV)a Turbidity (NTU) Ferrous Iron (mg/L)b Nitrite (mg/L)b Nitrate (mg/L)b 3/2/2022 21.40 0.163 5.26 0.17 25 6.60 3.0 0.3 0.1 8/18/2022 27.37 0.122 5.98 0.00 -161 0.0 7.0 0.1 0.0 3/2/2022 21.41 0.327 6.40 3.67 117 0.1 0.0 0.2 2.2 8/18/2022 24.07 0.200 6.02 3.33 154 0.0 0.0 0.2 4.4 3/2/2022 21.64 0.224 4.55 0.00 140 1.5 0.5 0.2 0.1 8/22/2022 4.10 0.214 4.10 0.00 147 0.0 2.0 0.1 0.1 3/4/2022 19.66 0.448 6.08 0.00 149 1.9 0.0 0.4 0.2 8/22/2022 27.92 0.503 6.84 1.74 94 1.0 0.0 0.4 0.2 3/2/2022 22.29 0.579 6.79 0.00 -136 3.58 2.0 0.3 0.0 8/18/2022 24.87 0.640 6.43 0.00 -103 1.4 7.0 0.3 0.0 3/2/2022 22.59 0.513 7.18 0.00 -89 1.36 1.0 0.7 0.0 8/18/2022 23.37 0.548 6.84 0.00 -2 0.0 2.0 0.5 0.0 3/2/2022 23.64 0.600 4.57 0.00 68 4.3 5.0 1.3 0.0 8/23/2022 23.41 0.811 4.37 0.00 -113 3.6 3.0 1.6 0.0 3/4/2022 22.12 0.500 6.42 0.00 -11 1.73 2.25 0.5 0.0 8/22/2022 24.17 0.382 5.89 0.00 -39 2.2 3.0 0.5 0.0 3/4/2022 20.89 0.838 7.03 0.00 -56 0.6 1.5 0.6 0.1 8/18/2022 23.50 0.670 6.69 0.00 -103 0.5 2.0 0.5 0.0 IR88-MW39MP-A 3/7/2022 22.91 0.318 6.0 3.14 60 0.0 NM NM NM IR88-MW39MP-B 3/7/2022 22.8 0.455 6.05 2.14 47 0 NM NM NM IR88-MW39MP-C 3/7/2022 22.73 0.451 7.81 2.31 47 NM NM NM NM Station ID Date Zone 2 Zone 1 Water Quality Meter Hach Test Kits IR88-MW02 IR88-MW06 IR88-MW25 IR88-MW02IW IR88-MW05IW IR88-MW30IW IR88-MW70UCH IR88-MW58 IR88-RABBITMW1 1 of 2 Attachment 2. Water Quality Parameters Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Temperature (oC) Specific Conductivity (mS/cm) pH (SU) Dissolved Oxygen (mg/L) ORP (mV)a Turbidity (NTU) Ferrous Iron (mg/L)b Nitrite (mg/L)b Nitrate (mg/L)bStation ID Date Zone 1 Water Quality Meter Hach Test Kits 2/24/2022 21.27 0.141 4.77 0.00 69 3.41 0.5 0.2 0.0 8/23/2022 23.82 0.000 4.38 5.58 219 2.0 1.0 0.3 0.0 2/24/2022 NM NM NM NM NM NM NM 0.5 0.0 8/18/2022 24.70 0.519 7.30 0.00 -133 2.1 1.0 0.5 0.0 2/25/2022 22.47 0.560 6.75 0.00 -155 NM 1.0 0.6 0.0 8/22/2022 24.89 0.621 6.41 0.00 -76 4.2 2.0 0.3 0.0 2/24/2022 20.70 0.632 7.64 0.00 -60 0.0 1.5 0.5 0.0 8/18/2022 25.41 0.575 7.12 0.00 -85 1.8 2.0 0.1 0.0 3/2/2022 21.87 0.715 7.26 0.00 -108 1.1 2.0 0.3 0.0 8/22/2022 22.47 0.642 7.02 0.00 -113 0.0 4.0 0.4 0.1 2/25/2022 21.92 0.204 5.66 0.00 56 0.00 1 0.3 0.0 8/22/2022 26.54 0.415 6.39 0.00 -57 1.4 1.5 0.3 0.0 2/25/2022 24.23 0.368 6.33 0.00 0 0.0 1.0 0.6 0.0 8/24/2022 25.71 0.868 6.69 3.51 -73 1.0 1.5 0.5 0.0 2/24/2022 20.24 0.317 6.32 0.00 -58 5.1 0.0 0.3 0.0 8/18/2022 23.70 0.420 5.20 0.00 -75 9.5 1.0 0.4 0.0 a A reference electrode using silver/silver chloride with 3.33 moles per liter potassium chloride as inner solution was used. mg/L = milligram(s) per liter mV = millivolt(s)NTU = nephelometric turbidity units mS/cm = millisiemen(s) per centimeter °C = degrees celsius IR88-MW67UCH NA = not applicable NM = not measured SU = standard units b Measurement collected via Hach Test Kits. Ferrous iron, nitrite and nitrate results are only available for sample locations where NAIPs were analyzed. IR88-MW15IW IR88-MW66UCH IR88-MW20IW IR88-MW22IW IR88-MW48IW IR88-MW64UCH IR88-MW65UCH Zone 3 2 of 2 Attachment 3 Analytical Data Tables Attachment 3a Zone 1 Surficial Aquifer Analytical Results Attachment 3a. Zone 1 Surficial Aquifer Analytical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Station ID Sample ID Sample Date Number of Rounds Without Exceedance of Current Groundwater Standards Chemical Name Volatile Organic Compounds (UG/L) Benzene -6.93 1 0 2.7 3.5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U cis-1,2-Dichloroethene 1184 105 70 0 88 70 0.5 U 0.5 U 0.5 U 0.5 U 2 1.2 J 230 240 Tetrachloroethene 112 24.2 0.7 0 82 44 0.5 U 0.5 U 0.5 U 0.5 U 660 590 J 110 37J Trichloroethene 132 2.18 3 0 9.6 6.5 0.5 U 0.5 U 0.5 U 0.5 U 9.4 5.4 J 64 20J Vinyl chloride 61 2.45 0.03 0 97 77 0.05 U 0.05 U 0.05 U 0.05 U 1U 0.023 J 3.7 5.3 Semivolatile Organic Compounds (UG/L) Naphthalene -20.1 6 0 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U Wet Chemistry Alkalinity (mg/l)----43 40 120 NA 120 NA 4U 4U 250 240 Chloride (mg/l)----13 14 4 NA 4.5 NA 10 11 18 15 Ethane (mg/l)----0.22 0.27 0.005 U NA 0.005 U NA 0.005 U 0.005 U 0.005 U 0.005 U Ethene (mg/l)----0.45 0.32 0.005 U NA 0.005 U NA 0.005 U 0.005 U 0.005 U 0.005 U Methane (mg/l)----9.5 11 0.016 NA 0.005 U NA 0.044 0.054 0.28 0.37 Nitrate (mg/l)----0.051 0.038 J 2.2 NA 4.4 NA 0.068 0.08 0.18 0.23 Nitrite (mg/l)----0.31 0.12 0.23 NA 0.23 NA 0.16 0.13 0.44 0.38 Sulfate (mg/l)----0.5 U 32 8 NA 18 NA 88 100 57 51 Sulfide (mg/l)----0.8 U 0.8 U 1 NA 0.8 U NA 1.1 0.8 U 0.82 J 0.8 U Total organic carbon (TOC) (mg/l)----3.6 4.2 2.6 NA 2.8 NA 1.1 1.3 1.7 1.5 Dechlorinating Bacteria (CELLS/ML) Dehalococcoides ----39.8 8.7 0.5 NA 0.9 NA 0.4 J 0.4 J 1.6 0.4 J Functioning Genes (CELLS/ML) BAV1 R-Dase ----0.3 U 0.5 U 0.3 U NA 0.3 J NA 0.5 U 0.5 U 0.3 U 0.5 U TCE R-Dase ----0.3 U 0.5 U 0.3 U NA 0.2 J NA 0.5 U 0.5 U 0.3 U 0.5 U VC R-Dase ----0.3 U 0.5 U 0.3 U NA 0.1 J NA 0.5 U 0.5 U 0.3 U 0.5 U a Active Remediation Goals are based on the concentration for each contaminant of concern at which predictive modeling indicates reduction to the maximum contaminant levels (MCLs) within 100 years. b Non-Residential EPA Vapor Intrusion Screening Levels (VISL) for groundwater are based on Target Cancer Risk (TCR)=1.0E-06 and Target Hazard Quotient (THQ)=0.1 (EPA, 2023). c Current groundwater standard is the North Carolina Groundwater Quality Standard (NCGWQS) (April 1, 2022) Notes: Bold indicates detections µg/L = microgram(s) per liter cells/mL = cells per milliliter mg/L = milligram(s) per liter NA = Not analyzed Underline indicates exceedance of Active Remediation Goals 8/18/2022 8/18/20223/2/2022 8/18/2022 4 Shading indicates the result exceeded the Current Groundwater Standard 0 0 IR88-GW02-22C IR88-GW06-22A IR88-GW06-22A-DUPActive Remediation Goala Non-Residential USEPA VISLb Current Groundwater Standardsc Number of Rounds Without Exceedance of Current Groundwater Standards IR88-GW06-22C IR88-GW58-22A 8/22/2022 IR88-GW25-22C IR88-GW58-22C IR88-MW02 IR88-MW06 IR88-GW06-22C-DUPIR88-GW02-22A 3/2/2022 3/2/2022 IR88-GW25-22A IR88-MW25 IR88-MW58 U = The material was analyzed for, but not detected 3/2/2022 8/22/2022 3/4/2022 J = Analyte present, value may or may not be accurate or precise 0 Bold box indicates exceedance of Non-Residential USEPA VISL 1 of 1 Attachment 3b Zone 1 UCH Aquifer Analytical Results Attachment 3b. Zone 1 Upper Castle Hayne Aquifer Analytical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Station ID Sample ID Sample Date Number of Rounds Without Exceedance of Current Groundwater Standards Chemical Name Volatile Organic Compounds (µg/L) Benzene -1 2 0.5 U 0.3 J 0.72 J 0.96 J 20U 20U 0.3 J 0.5 U 5U 2.5 U cis-1,2-Dichloroethene 1184 70 0 69 95J 470 450 J 14000 9100 J 0.46 J 0.93 J 6800 7000 J Tetrachloroethene 112 0.7 1 0.5 U 0.5 U 1U 1U 20U 20U 0.5 U 0.5 U 5U 2.5 U Trichloroethene 132 3 1 0.5 U 0.7 J 1U 1U 20U 20U 0.5 U 0.5 U 5U 2.5 U Vinyl chloride 61 0.03 0 50 46J 440 840 J 4300 4100 1.5 0.69 1400 1800 J Semivolatile Organic Compounds (µg/L) Naphthalene -6 3 0.5 U 0.5 U 1U 1U 20U 20U 0.5 U 0.5 U 5U 2.5 U Wet Chemistry Alkalinity (mg/l)---250 310 380 390 20 18 250 240 380 370 Chloride (mg/l)---9.4 9.4 49 56 220 240 16 16 23 21 Ethane (mg/l)---0.005 U 0.005 U 0.039 0.012 0.2 0.33 J 0.057 0.07 0.0038 J 0.005 U Ethene (mg/l)---0.043 0.019 1.5 0.33 1.2 1.5 0.0086 J 0.0021 J 0.14 0.1 Methane (mg/l)---21 20 22 24 20 21 21 10 0.25 0.16 Nitrate (mg/l)---0.04 J 0.038 J 0.044 J 0.038 J 0.04 J 0.038 J 0.038 J 0.04 J 0.057 0.041 J Nitrite (mg/l)---0.31 0.28 0.67 0.48 1.3 1.6 0.54 0.46 0.58 0.5 Sulfate (mg/l)---17 21 1.8 1.2 0.39 J 0.77 J 4.3 0.74 J 79 81 Sulfide (mg/l)---0.8 U 0.8 U 1.5 0.8 U 1.6 0.8 U 0.7 J 0.8 U 0.7 J 0.8 U Total organic carbon (TOC) (mg/l)---9.9 4.7 2.2 1.6 4 3.2 5.3 5.5 2 1.2 Dechlorinating Bacteria (cells/mL) Dehalococcoides ---29200 915 13600 968 12300 1300 75.9 9.3 84800 11600 Functioning Genes (cells/mL) BAV1 R-Dase ---2490 315 689 137 51.7 55.2 0.7 0.6 15300 2660 TCE R-Dase ---649 74.3 598 70.7 3690 301 21.6 7.2 17800 3250 VC R-Dase ---654 73.1 632 105 1 1.7 0.7 0.7 11200 1300 a Active Remediation Goals are based on the concentration for each contaminant of concern at which predictive modeling indicates reduction to the maximum contaminant levels (MCLs) within 100 years. bCurrent groundwater standard is the North Carolina Groundwater Quality Standard (NCGWQS) (April 1, 2022) Notes: Bold indicates detections µg/L = microgram(s) per liter cells/mL = cells per milliliter mg/L = milligram(s) per liter IR88-GW05IW-22A IR88-GW05IW-22C 0 0 0 0 3/2/2022 Underline indicates exceedance of Active Remediation Goals IR88-MW05IW IR88-MW30IW IR88-MW70UCHNumber of Rounds Without Exceedance of Current Groundwater Standards Current Groundwater Standardsb Active Remediation Goala Shading indicates the result exceeded the Current Groundwater Standard IR88-GW02IW-22A IR88-GW02IW-22C 8/18/20228/23/2022 IR88-GW70UCH-22A IR88-GW70UCH-22C IR88-MW02IW 3/4/2022 8/22/2022 3/4/20223/2/2022 IR88-RABITTMW1 J = Analyte present, value may or may not be accurate or precise 8/18/2022 3/2/2022 8/18/2022 IR88-RABBITTGW1-22A U = The material was analyzed for, but not detected 0 IR88-GW30IW-22A IR88-GW30IW-22C IR88-RABBITGW1-22C 1 of 1 Attachment 3c Zone 2 UCH Aquifer Analytical Results Attachment 3c. Zone 2 Upper Catle Hayne Aquifer Analytical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Station ID Sample ID Sample Date Number of Rounds Without Exceedance of Current Groundwater Standards Chemical Name Volatile Organic Compounds (UG/L) Benzene --1 3 NA NA 2.5 UJ 1U 5U cis-1,2-Dichloroethene 1184 70 0 1300 1300 2100 J 620 210 J Tetrachloroethene 112 0.7 0 18000 18000 1300 J 1700 9200 J Trichloroethene 132 3 0 1400 1400 1100 J 800 130 J Vinyl chloride 61 0.03 0 230 230 10J 1.1 J 5.6 J Semivolatile Organic Compounds (µg/L) Naphthalene --6 3 NA NA 2.5 UJ 1 U 5 U Notes: Shading indicates the result exceeded the Current Groundwater Standard Underline indicates exceedance of Active Remediation Goals Bold indicates detections 2/3/2022 20:15 µg/L = microgram(s) per liter NA = Not analyzed UJ = The analyte was below the reported sample quantitation limit. However, the reported value is approximate. b Current groundwater standard is the North Carolina Groundwater Quality Standard (NCGWQS) (April 1, 2022) IR88-GW54IW-22C IR88-GW56IW-22C IR88-MW39MP 0 J = Analyte present, value may or may not be accurate or precise 00 U = The material was analyzed for, but not detected 2/15/2022Active Remediation Goala Current Groundwater Standardsb Number of Rounds Without Exceedance of Current Groundwater Standards a Active Remediation Goals are based on the concentration for each contaminant of concern at which predictive modeling indicates reduction to the maximum contaminant levels (MCLs) within 100 years. 3/7/2022 3/7/2022 8/22/2022 8/22/2022 IR88-MW54IW IR88-MW56IW IR88-GW39MP-A-22A IR88-GW39MP-A-22A-DUP IR88-GW54IW-22A 1 of 1 Attachment 3d Zone 2 MCH Aquifer Analytical Results Attachment 3d. Zone 2 Middle Castle Hayne Aquifer Analytical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Station ID Sample ID Sample Date Number of Rounds Without Exceedance of Current Groundwater Standards Chemical Name Volatile Organic Compounds (µg/L) cis-1,2-Dichloroethene 1184 70 0 14J 590 3700 J 3.2 J 2600 670 140 J 610 J 270 J 160 J Tetrachloroethene 112 0.7 0 400 J 90J 2500 J 0.5 U 390 0.5 U 20000 J 24000 J 13000 J 6200 J Trichloroethene 132 3 0 52J 22J 1800 J 0.5 U 170 2.6 530 J 1600 J 900 J 610 J Vinyl chloride 61 0.03 0 0.05 UJ 9.5 240 J 3.3 J 1200 680 20 U 9.8 J 19 J 12 J Notes: Bold indicates detections µg/L = microgram(s) per liter NA = Not analyzed 0 2/17/2022 8/22/2022 a Active Remediation Goals are based on the concentration for each contaminant of concern at which predictive modeling indicates reduction to the maximum contaminant levels (MCLs) within 100 years. bCurrent groundwater standard is the North Carolina Groundwater Quality Standard (NCGWQS) (April 1, 2022) 2/17/2022 8/22/2022 0 0 3/7/2022 IR88-MW47DW3 IR88-GW39MP-B-22A IR88-GW39MP-C-22A IR88-GW45DW3-22A IR88-GW45DW3-22C IR88-GW47DW3-22CIR88-GW47DW3-22A 2/17/2022 8/22/2022 IR88-MW33DW IR88-GW33DW-22A IR88-GW33DW-22C IR88-MW39MP IR88-MW45DW3 3/7/20222/15/2022 8/23/2022 0 IR88-MW18DWNumber of Rounds Without Exceedance of Current Groundwater Standards Active Remediation Goala Current Groundwater Standardsb J = Analyte present, value may or may not be accurate or precise Shading indicates the result exceeded the Current Groundwater Standard Underline indicates exceedance of Active Remediation Goals IR88-GW18DW-22A IR88-GW18DW-22C U = The material was analyzed for, but not detected 0 0 1 of 1 Attachment 3e Zone 3 UCH Aquifer Analytical Results Attachment 3e. Zone 3 Upper Castle Hayne Aquifer Analytical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Station ID Sample ID Sample Date Number of Rounds Without Exceedance of Current Groundwater Standard Chemical Name Volatile Organic Compounds (µg/L) cis-1,2-Dichloroethene 70 0 1.2 1.2 1.4 J 1.2 J 14 12J 60J 14 93J 85J Tetrachloroethene 0.7 0 46 45 55J 52J 38 30J 50J 14 0.5 U 0.5 U Trichloroethene 3 0 3.8 3.3 2.9 J 3.1 J 15 15J 41J 9.9 9.1 5J Vinyl chloride 0.03 0 0.05 U 0.05 U 0.05 U 0.05 U 0.65 J 0.34 J 0.025 J 0.05 U 33J 18 Wet Chemistry Alkalinity (mg/L)--22 NA 14 NA 300 300 NA NA 420 380 Chloride (mg/L)--16 NA 16 NA 22 21 NA NA 19 19 Ethane (mg/L)--0.005 U NA 0.005 U NA 0.005 U 0.005 U NA NA 0.005 U 0.005 U Ethene (mg/L)--0.005 U NA 0.005 U NA 0.005 U 0.005 U NA NA 0.0033 J 0.005 U Methane (mg/L)--0.0046 J NA 0.0068 J NA 1.2 1.2 NA NA 7.9 10 Nitrate (mg/L)--0.037 J NA 0.047 J NA 0.04 J 0.039 J NA NA 0.038 J 0.043 J Nitrite (mg/L)--0.17 NA 0.31 NA 0.48 0.45 NA NA 0.55 0.3 Sulfate (mg/L)--78 NA 77 NA 22 25 NA NA 35 50 Sulfide (mg/L)--0.8 U NA 0.8 U NA 2.2 0.8 U NA NA 1.1 0.8 U TOC (mg/L)--1.2 NA 1 NA 0.77 J 1 NA NA 2.4 1.7 Dechlorinating Bacteria (cells/mL) Dehalococcoides --10.2 NA 5.8 NA 104 52.3 NA NA 4080 256 Functioning Genes (cells/mL) BAV1 R-Dase --0.5 U NA 1 NA 0.5 U 0.5 U NA NA 0.5 U 0.5 U TCE R-Dase --0.5 U NA 0.2 J NA 20.9 24.2 NA NA 574 115 VC R-Dase --0.5 U NA 0.7 NA 0.5 U 0.5 U NA NA 338 113 Notes: Shading indicates the result exceeded the Current Groundwater Standard µg/L = microgram(s) per liter cells/mL = cells per milliliter mg/L = milligram(s) per liter NA = Not analyzed TOC = total organic carbon IR88-MW15IW IR88-GW15IW-22A IR88-GW15IW-22A-DUP IR88-GW15IW-22C IR88-GW15IW-22C-DUP IR88-MW20IW IR88-GW20IW-22A IR88-GW20IW-22C IR88-MW21IW IR88-MW22IW IR88-GW21IW-22A IR88-GW21IW-22C IR88-GW22IW-22A IR88-GW22IW-22C J = Analyte present, value may or may not be accurate or precise L = Analyte present, value may be biased low, actual value may be higher U = The material was analyzed for, but not detected UJ = Analyte not detected, quantitation limit may be inaccurate Number of Rounds Without Exceedance of Current Groundwater Standard Current Groundwater Standardsa a Current groundwater standard is the North Carolina Groundwater Quality Standard (NCGWQS) (April 1, 2022) 2/15/2022 8/26/2022 2/25/2022 8/22/2022 0 Bold indicates detections 2/24/2022 2/24/2022 8/23/2022 8/23/2022 2/24/2022 8/18/2022 0 0 0 0 0 00 1 of 3 Attachment 3e. Zone 3 Upper Castle Hayne Aquifer Analytical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Station ID Sample ID Sample Date Number of Rounds Without Exceedance of Current Groundwater Standard Chemical Name Volatile Organic Compounds (µg/L) cis-1,2-Dichloroethene 70 0 Tetrachloroethene 0.7 0 Trichloroethene 3 0 Vinyl chloride 0.03 0 Wet Chemistry Alkalinity (mg/L)-- Chloride (mg/L)-- Ethane (mg/L)-- Ethene (mg/L)-- Methane (mg/L)-- Nitrate (mg/L)-- Nitrite (mg/L)-- Sulfate (mg/L)-- Sulfide (mg/L)-- TOC (mg/L)-- Dechlorinating Bacteria (cells/mL) Dehalococcoides -- Functioning Genes (cells/mL) BAV1 R-Dase -- TCE R-Dase -- VC R-Dase -- Notes: Shading indicates the result exceeded the Current Groundwater Standard µg/L = microgram(s) per liter cells/mL = cells per milliliter mg/L = milligram(s) per liter NA = Not analyzed TOC = total organic carbon J = Analyte present, value may or may not be accurate or precise L = Analyte present, value may be biased low, actual value may be higher U = The material was analyzed for, but not detected UJ = Analyte not detected, quantitation limit may be inaccurate Number of Rounds Without Exceedance of Current Groundwater Standard Current Groundwater Standardsa a Current groundwater standard is the North Carolina Groundwater Quality Standard (NCGWQS) (April 1, 2022) Bold indicates detections 34 32J 3J 2J 12J 5.4 J 45 42 4.8 6.7 J 0.5 U 0.5 U 0.5 U 0.5 U 2J 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.58 J 0.5 U 3.7 J 4.2 J 2.3 J 0.72 J 4.4 3.6 1.4 1.2 J 0.12 0.068 J 0.023 J 0.018 J 0.05 U 0.093 J 0.074 J 0.087 J 0.095 J 0.053 J 390 320 NA NA NA NA 350 320 210 180 17 17 NA NA NA NA 18 18 16 17 0.005 U 0.005 U NA NA NA NA 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U NA NA NA NA 0.005 U 0.005 U 0.005 U 0.005 U 8.8 4.3 NA NA NA NA 0.053 0.054 0.86 0.4 0.038 J 0.038 J NA NA NA NA 0.038 J 0.07 0.037 J 0.037 J 0.54 0.12 NA NA NA NA 0.34 0.44 0.29 0.27 35 51 NA NA NA NA 72 74 45 54 1.1 0.8 U NA NA NA NA 0.8 U 0.8 U 0.98 J 0.8 U 1.6 1.3 NA NA NA NA 1.4 1 0.84 J 0.97 J 12.8 2.6 NA NA NA NA 29.7 6.1 5.2 0.9 0.5 U 0.2 J NA NA NA NA 0.5 U 0.5 U 0.3 U 0.5 U 0.5 U 0.5 U NA NA NA NA 2.6 0.2 J 0.3 U 0.5 U 0.5 U 0.5 U NA NA NA NA 2 0.3 J 0.3 U 0.5 U IR88-MW48IW IR88-MW49IW IR88-MW63UCH IR88-MW64UCH IR88-MW65UCH IR88-GW63UCH-22A IR88-GW63UCH-22C IR88-GW64UCH-22A IR88-GW64UCH-22C IR88-GW65UCH-22A IR88-GW65UCH-22CIR88-GW48IW-22A IR88-GW48IW-22C IR88-GW49IW-22A IR88-GW49IW-22C 2/24/2022 8/18/2022 2/15/2022 8/23/2022 2/15/2022 8/22/2022 3/2/2022 8/22/2022 2/25/2022 8/22/2022 0 0 0 0 0 0 0 0 0 0 2 of 3 Attachment 3e. Zone 3 Upper Castle Hayne Aquifer Analytical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Station ID Sample ID Sample Date Number of Rounds Without Exceedance of Current Groundwater Standard Chemical Name Volatile Organic Compounds (µg/L) cis-1,2-Dichloroethene 70 0 Tetrachloroethene 0.7 0 Trichloroethene 3 0 Vinyl chloride 0.03 0 Wet Chemistry Alkalinity (mg/L)-- Chloride (mg/L)-- Ethane (mg/L)-- Ethene (mg/L)-- Methane (mg/L)-- Nitrate (mg/L)-- Nitrite (mg/L)-- Sulfate (mg/L)-- Sulfide (mg/L)-- TOC (mg/L)-- Dechlorinating Bacteria (cells/mL) Dehalococcoides -- Functioning Genes (cells/mL) BAV1 R-Dase -- TCE R-Dase -- VC R-Dase -- Notes: Shading indicates the result exceeded the Current Groundwater Standard µg/L = microgram(s) per liter cells/mL = cells per milliliter mg/L = milligram(s) per liter NA = Not analyzed TOC = total organic carbon J = Analyte present, value may or may not be accurate or precise L = Analyte present, value may be biased low, actual value may be higher U = The material was analyzed for, but not detected UJ = Analyte not detected, quantitation limit may be inaccurate Number of Rounds Without Exceedance of Current Groundwater Standard Current Groundwater Standardsa a Current groundwater standard is the North Carolina Groundwater Quality Standard (NCGWQS) (April 1, 2022) Bold indicates detections 0.65 J 1.4 4.5 5.4 J 120 J 83J 4.9 J 3.7 J 0.5 U 0.5 U 0.5 U 0.5 U 440 J 150 J 0.76 J 0.61 J 0.5 U 0.5 U 3.3 2.1 J 100 J 86J 5.1 J 4.2 J 22 15 0.032 J 0.032 J 0.51 J 0.34 J 0.028 J 0.021 J 500 520 250 230 NA NA NA NA 18 18 14 14 NA NA NA NA 0.005 U 0.005 U 0.005 U 0.005 U NA NA NA NA 0.011 0.0092 J 0.005 U 0.005 U NA NA NA NA 13 17 4.3 2.2 NA NA NA NA 0.041 J 0.037 J 0.038 J 0.038 J NA NA NA NA 0.6 0.46 0.28 0.39 NA NA NA NA 2.3 0.5 U 38 39 NA NA NA NA 0.8 U 1.8 0.8 U 0.8 U NA NA NA NA 23 41 0.73 J 0.87 J NA NA NA NA 424 130 6.1 4.9 NA NA NA NA 0.4 U 0.5 U 0.5 U 0.5 U NA NA NA NA 57.5 118 0.5 U 0.5 U NA NA NA NA 34.3 106 0.5 U 0.5 U NA NA NA NA IR88-MW66UCH IR88-MW67UCH IR88-MW68UCH IR88-MW69UCH IR88-GW66UCH-22C IR88-GW67UCH-22A IR88-GW67UCH-22C IR88-GW69UCH-22CIR88-GW66UCH-22A IR88-GW68UCH-22A IR88-GW68UCH-22C IR88-GW69UCH-22A 2/15/2022 8/23/2022 2/17/2022 8/22/20222/25/2022 8/24/2022 2/24/2022 8/18/2022 0 0 0 0 0000 3 of 3 Attachment 3f 10 Times NCSWQS Comparison for Zone 3 UCH Aquifer Marine Corps Base Camp Lejeune North Carolina Station ID Sample ID Sample Date Chemical Name Volatile Organic Compounds (µg/L) cis-1,2-Dichloroethene 7,200 1.2 1.2 1.4 J 1.2 J 14 12 J 60 J 14 93 J 85 J Tetrachloroethene 33 46 45 55 J 52 J 38 30 J 50 J 14 0.5 U 0.5 U Trichloroethene 300 3.8 3.3 2.9 J 3.1 J 15 15 J 41 J 9.9 9.1 5 J Vinyl chloride 24 0.05 U 0.05 U 0.05 U 0.05 U 0.65 J 0.34 J 0.025 J 0.05 U 33 J 18 Wet Chemistry Alkalinity (mg/L) -22 NA 14 NA 300 300 NA NA 420 380 Chloride (mg/L) -16 NA 16 NA 22 21 NA NA 19 19 Ethene (mg/L) - 0.005 U NA 0.005 U NA 0.005 U 0.005 U NA NA 0.0033 J 0.005 U Methane (mg/L) -0.0046 J NA 0.0068 J NA 1.2 1.2 NA NA 7.9 10 Nitrate (mg/L) -0.037 J NA 0.047 J NA 0.04 J 0.039 J NA NA 0.038 J 0.043 J Nitrite (mg/L) -0.17 NA 0.31 NA 0.48 0.45 NA NA 0.55 0.3 Sulfate (mg/L) -78 NA 77 NA 22 25 NA NA 35 50 Sulfide (mg/L) - 0.8 U NA 0.8 U NA 2.2 0.8 U NA NA 1.1 0.8 U TOC (mg/L) -1.2 NA 1 NA 0.77 J 1 NA NA 2.4 1.7 Dechlorinating Bacteria (cells/mL) Dehalococcoides -10.2 NA 5.8 NA 104 52.3 NA NA 4080 256 Functioning Genes (cells/mL) BAV1 R-Dase - 0.5 U NA 1 NA 0.5 U 0.5 U NA NA 0.5 U 0.5 U TCE R-Dase - 0.5 U NA 0.2 J NA 20.9 24.2 NA NA 574 115 VC R-Dase -0.5 U NA 0.7 NA 0.5 U 0.5 U NA NA 338 113 Notes: Bold indicates detections µg/L = microgram(s) per liter cells/mL = cells per milliliter mg/L = milligram(s) per liter NA = Not analyzed TOC = total organic carbon Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 U = The material was analyzed for, but not detected IR88-GW20IW-22C IR88-MW21IW IR88-MW22IW IR88-GW22IW-22A 2/24/2022 IR88-GW21IW-22A IR88-GW21IW-22C IR88-MW15IW 8/18/2022 2/15/2022 IR88-GW22IW-22C IR88-MW20IW a 10 times the Human Health NCSWQS to determine the potential for groundwater to affect surface water (September 1, 2022). If there is no Human Health NCSWQS for an analyte, COCs were compared to 10 times the EPA National Recommended Water Quality Criteria (NRWQC) (June 2015). If there is no NRWQC for an analyte, COCs were compared to 10 times the North Carolina Protective Value for Surface Water (September 1, 2022). IR88-GW20IW-22A J = Analyte present, value may or may not be accurate or precise IR88-GW15IW-22A IR88-GW15IW-22A-DUP IR88-GW15IW-22C IR88-GW15IW-22C-DUP 8/26/2022 UJ = Analyte not detected, quantitation limit may be inaccurate L = Analyte present, value may be biased low, actual value may be higher 2/24/2022 2/24/2022 8/23/2022 8/23/2022 NCSWQS X 10a Shading indicates exceedance of ten times NCSWQS Attachment 3f. 10 Times NCSWQS Comparison for Zone 3 Upper Castle Hayne Aquifer 2/25/2022 8/22/2022 1 of 3 Marine Corps Base Camp Lejeune North Carolina Station ID Sample ID Sample Date Chemical Name Volatile Organic Compounds (µg/L) cis-1,2-Dichloroethene 7,200 Tetrachloroethene 33 Trichloroethene 300 Vinyl chloride 24 Wet Chemistry Alkalinity (mg/L) - Chloride (mg/L) - Ethene (mg/L) - Methane (mg/L) - Nitrate (mg/L) - Nitrite (mg/L) - Sulfate (mg/L) - Sulfide (mg/L) - TOC (mg/L) - Dechlorinating Bacteria (cells/mL) Dehalococcoides - Functioning Genes (cells/mL) BAV1 R-Dase - TCE R-Dase - VC R-Dase - Notes: Bold indicates detections µg/L = microgram(s) per liter cells/mL = cells per milliliter mg/L = milligram(s) per liter NA = Not analyzed TOC = total organic carbon Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 U = The material was analyzed for, but not detected a 10 times the Human Health NCSWQS to determine the potential for groundwater to affect surface water (September 1, 2022). If there is no Human Health NCSWQS for an analyte, COCs were compared to 10 times the EPA National Recommended Water Quality Criteria (NRWQC) (June 2015). If there is no NRWQC for an analyte, COCs were compared to 10 times the North Carolina Protective Value for Surface Water (September 1, 2022). J = Analyte present, value may or may not be accurate or precise UJ = Analyte not detected, quantitation limit may be inaccurate L = Analyte present, value may be biased low, actual value may be higher NCSWQS X 10a Shading indicates exceedance of ten times NCSWQS Attachment 3f. 10 Times NCSWQS Comparison for Zone 3 Upper Castle Hayne Aquifer 34 32 J 3 J 2 J 12 J 5.4 J 45 42 4.8 6.7 J 0.5 U 0.5 U 0.5 U 0.5 U 2 J 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.58 J 0.5 U 3.7 J 4.2 J 2.3 J 0.72 J 4.4 3.6 1.4 1.2 J 0.12 0.068 J 0.023 J 0.018 J 0.05 U 0.093 J 0.074 J 0.087 J 0.095 J 0.053 J 390 320 NA NA NA NA 350 320 210 180 17 17 NA NA NA NA 18 18 16 17 0.005 U 0.005 U NA NA NA NA 0.005 U 0.005 U 0.005 U 0.005 U 8.8 4.3 NA NA NA NA 0.053 0.054 0.86 0.4 0.038 J 0.038 J NA NA NA NA 0.038 J 0.07 0.037 J 0.037 J 0.54 0.12 NA NA NA NA 0.34 0.44 0.29 0.27 35 51 NA NA NA NA 72 74 45 54 1.1 0.8 U NA NA NA NA 0.8 U 0.8 U 0.98 J 0.8 U 1.6 1.3 NA NA NA NA 1.4 1 0.84 J 0.97 J 12.8 2.6 NA NA NA NA 29.7 6.1 5.2 0.9 0.5 U 0.2 J NA NA NA NA 0.5 U 0.5 U 0.3 U 0.5 U 0.5 U 0.5 U NA NA NA NA 2.6 0.2 J 0.3 U 0.5 U 0.5 U 0.5 U NA NA NA NA 2 0.3 J 0.3 U 0.5 U IR88-GW64UCH-22C IR88-GW65UCH-22A IR88-GW65UCH-22C 2/15/2022 8/23/2022 2/15/2022 IR88-MW65UCH IR88-GW64UCH-22A IR88-MW63UCH IR88-MW64UCH IR88-GW63UCH-22A 3/2/2022 8/22/2022 IR88-GW49IW-22A IR88-GW49IW-22C IR88-GW63UCH-22C IR88-MW48IW IR88-MW49IW IR88-GW48IW-22A IR88-GW48IW-22C 8/22/20228/22/2022 2/25/20222/24/2022 8/18/2022 2 of 3 Marine Corps Base Camp Lejeune North Carolina Station ID Sample ID Sample Date Chemical Name Volatile Organic Compounds (µg/L) cis-1,2-Dichloroethene 7,200 Tetrachloroethene 33 Trichloroethene 300 Vinyl chloride 24 Wet Chemistry Alkalinity (mg/L) - Chloride (mg/L) - Ethene (mg/L) - Methane (mg/L) - Nitrate (mg/L) - Nitrite (mg/L) - Sulfate (mg/L) - Sulfide (mg/L) - TOC (mg/L) - Dechlorinating Bacteria (cells/mL) Dehalococcoides - Functioning Genes (cells/mL) BAV1 R-Dase - TCE R-Dase - VC R-Dase - Notes: Bold indicates detections µg/L = microgram(s) per liter cells/mL = cells per milliliter mg/L = milligram(s) per liter NA = Not analyzed TOC = total organic carbon Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 U = The material was analyzed for, but not detected a 10 times the Human Health NCSWQS to determine the potential for groundwater to affect surface water (September 1, 2022). If there is no Human Health NCSWQS for an analyte, COCs were compared to 10 times the EPA National Recommended Water Quality Criteria (NRWQC) (June 2015). If there is no NRWQC for an analyte, COCs were compared to 10 times the North Carolina Protective Value for Surface Water (September 1, 2022). J = Analyte present, value may or may not be accurate or precise UJ = Analyte not detected, quantitation limit may be inaccurate L = Analyte present, value may be biased low, actual value may be higher NCSWQS X 10a Shading indicates exceedance of ten times NCSWQS Attachment 3f. 10 Times NCSWQS Comparison for Zone 3 Upper Castle Hayne Aquifer 0.65 J 1.4 4.5 5.4 J 120 J 83 J 4.9 J 3.7 J 0.5 U 0.5 U 0.5 U 0.5 U 440 J 150 J 0.76 J 0.61 J 0.5 U 0.5 U 3.3 2.1 J 100 J 86 J 5.1 J 4.2 J 22 15 0.032 J 0.032 J 0.51 J 0.34 J 0.028 J 0.021 J 500 520 250 230 NA NA NA NA 18 18 14 14 NA NA NA NA 0.011 0.0092 J 0.005 U 0.005 U NA NA NA NA 13 17 4.3 2.2 NA NA NA NA 0.041 J 0.037 J 0.038 J 0.038 J NA NA NA NA 0.6 0.46 0.28 0.39 NA NA NA NA 2.3 0.5 U 38 39 NA NA NA NA 0.8 U 1.8 0.8 U 0.8 U NA NA NA NA 23 41 0.73 J 0.87 J NA NA NA NA 424 130 6.1 4.9 NA NA NA NA 0.4 U 0.5 U 0.5 U 0.5 U NA NA NA NA 57.5 118 0.5 U 0.5 U NA NA NA NA 34.3 106 0.5 U 0.5 U NA NA NA NA IR88-MW68UCH IR88-GW66UCH-22A IR88-MW66UCH IR88-GW68UCH-22A IR88-MW67UCH IR88-GW67UCH-22C IR88-MW69UCH IR88-GW68UCH-22C IR88-GW69UCH-22A IR88-GW69UCH-22CIR88-GW66UCH-22C IR88-GW67UCH-22A 2/25/2022 8/24/2022 2/17/20222/15/2022 8/22/20222/24/2022 8/18/2022 8/23/2022 3 of 3 Attachment 4 Mann-Kendall Trend Evaluation 1 OF 2 ATTACHMENT 4 Mann-Kendall Statistical Evaluation The Mann-Kendall (MK) statistical analysis was performed to evaluate the significance of historical concentration trends at the site and evaluate the performance of the remedy for site-specific volatile organic compounds. The MK statistical analysis is a nonparametric procedure used to identify whether there is a statistically significant trend over a period of monitoring. The analysis is based on the idea that a lack of trend should correspond to a time series plot fluctuating randomly about a constant mean level, with no visually apparent upward or downward pattern (EPA, 2009). As a nonparametric procedure, the MK analysis does not require the underlying data to follow a specific distribution. The analysis compares the relative magnitudes of sample data rather than the data values themselves. Analytical data reported at less than the method detection limit (non-detects) can be used in the analysis by assigning them a common value that is less than the smallest measured value in the data set (EPA, 2009). Table 4-1 provides the values used for each analyte for the analysis performed for the FY 2022 report. As recommended by the EPA’s Statistical Analysis of Groundwater Monitoring Data at RCRA Facilities: Unified Guidance, the Kaplan-Meier method was used to estimate the mean and standard deviation for data sets with nondetect values (EPA, 2009). Table 4-1. Minimum Values for Analytes Across Data Set Analyte Minimum Value Across Data Set (µg/L) ½ Minimum Value Across Data Set (µg/L) Zone 1 Surficial Aquifer Tetrachloroethene 20 10 Trichloroethene 4.91 2.455 cis-1,2-Dichloroethene 1.1 0.55 Vinyl chloride 0.023 0.0115 Benzene 2.7 1.35 Naphthalene NA NA Zone 1 Upper Castle Hayne Aquifer Tetrachloroethene 3.2 1.6 Trichloroethene 0.7 0.35 cis-1,2-Dichloroethene 0.34 0.17 Vinyl chloride 0.27 0.135 Benzene 0.3 0.15 Naphthalene NA NA Zone 3 Upper Castle Hayne Aquifer Tetrachloroethene 0.42 0.21 Trichloroethene 0.4 0.2 cis-1,2-Dichloroethene 0.65 0.325 ATTACHMENT 4—MANN-KENDALL STATISTICAL EVALUATION 2 OF 2 Table 4-1. Minimum Values for Analytes Across Data Set Analyte Minimum Value Across Data Set (µg/L) ½ Minimum Value Across Data Set (µg/L) Vinyl chloride 0.018 0.009 Benzene NA NA Naphthalene NA NA NA = Not Applicable The MK analysis statistic (S) is found by counting the number of "concordant observations," where the later-in- time observation has a larger value for the series, and subtracting the number of "discordant observations," where the later-in-time observation has a smaller value for the series. This is done for all pairs of observations in the data set. The total difference is denoted S. Positive values of S indicate an increase in constituent concentrations over time, whereas negative values indicate a decrease in constituent concentrations over time. The strength of the trend is proportional to the magnitude of the S (that is, the larger the absolute value of S, the stronger the evidence for a real increasing or decreasing trend). Any pair of tied values or any pair of nondetects contribute nothing to S, and thus are given a score of zero. The calculated probability (p-value) for the MK analysis represents the probability that any observed trend would occur purely by chance (given the variability and sample size of the data set). A significance level of 0.05, corresponding to a confidence level of 95 percent, was used to test the null hypothesis that there is no trend in the data. The significance level is the probability that the MK analysis erroneously detects a trend when none is present. A 0.05 significance level was selected to provide strong evidence against the null hypothesis, thus reducing an erroneous result. The result of the MK analysis could be a significantly increasing or decreasing trend (p-values less than 0.05) or a nonsignificant result (no trend for p-values equal to or greater than 0.05). For well-constituent pairs where the MK analysis could not statistically determine a trend at the 95-percent confidence level, concentrations were deemed stable if the coefficient of variation (COV) was less than 1. The COV is a relative measure of variation in the groundwater concentration data and can be affected by the magnitude of concentrations (EPA, 2009). While there is no objective basis for using a particular value of COV to determine stability, values greater than 1 indicate that the data exhibit a greater detail of scatter about the mean; values less than or near 1 indicate that the data form a relatively close group about the mean value. Maintaining statistical validity of the trend analysis requires constraints on the amount of minimum data that can be tested. To ensure a meaningful comparison of concentrations over time, evaluations of trends were performed only for wells with at least four independent sampling events and a detection frequency of greater than 50 percent. The temporal behavior of the concentration data was also examined graphically to confirm the results of the trend analysis. References United States Environmental Protection Agency (EPA). 2009. Statistical Analysis of Groundwater Monitoring Data at RCRA Facilities: Unified Guidance. EPA-530-R-09-007. Office of Resource Conservation and Recovery. March. Attachment 4a FY 2021 Zone 1 Surficial Aquifer Mann-Kendall Trend Evaluation Attachment 4a. FY 2022 Zone 1 Surficial Aquifer Mann-Kendall Trend Evaluation Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Well Compound Total Samples Detect Non- detect Detection Frequency Min Max Mean COV First Sample Date First Sample Result Most Recent Sample Date Most Recent Sample Result MK Result Trend IR88-MW02 Tetrachloroethene 7 7 0 100 20 82 45.51 0.51 1/31/2019 70.6 J 8/18/2022 44 50% (-)Stable IR88-MW02 Trichloroethene 7 7 0 100 4.91 14 7.84 0.41 1/31/2019 4.91 J 8/18/2022 6.5 80.9% (+)Stable IR88-MW02 cis-1,2-Dichloroethene 7 7 0 100 70 200 118.57 0.48 1/31/2019 198 J 8/18/2022 70 99.5% (sig -)Decreasing IR88-MW02 Vinyl chloride 7 7 0 100 77 140 101.71 0.21 1/31/2019 121 J 8/18/2022 77 94.8% (-)Stable IR88-MW02 Benzene 7 7 0 100 2.7 5.53 3.79 0.24 1/31/2019 5.53 J 8/18/2022 3.5 94.8% (-)Stable IR88-MW02 Naphthalene 7 0 7 0 NA NA NA NA 1/31/2019 1 U 8/18/2022 0.5 U >50% ND >50% ND IR88-MW06 Tetrachloroethene 6 0 6 0 NA NA NA NA 12/12/2019 0.5 U 8/18/2022 0.5 U >50% ND >50% ND IR88-MW06 Trichloroethene 6 0 6 0 NA NA NA NA 12/12/2019 0.5 U 8/18/2022 0.5 U >50% ND >50% ND IR88-MW06 cis-1,2-Dichloroethene 6 0 6 0 NA NA NA NA 12/12/2019 0.5 U 8/18/2022 0.5 U >50% ND >50% ND IR88-MW06 Vinyl chloride 6 0 6 0 NA NA NA NA 12/12/2019 0.05 U 8/18/2022 0.05 U >50% ND >50% ND IR88-MW06 Benzene 6 0 6 0 NA NA NA NA 12/12/2019 0.5 U 8/18/2022 0.5 U >50% ND >50% ND IR88-MW06 Naphthalene 6 0 6 0 NA NA NA NA 12/12/2019 0.5 U 8/18/2022 0.5 U >50% ND >50% ND IR88-MW25 Tetrachloroethene 6 6 0 100 590 1000 730.00 0.19 12/10/2019 670 8/22/2022 590 J 81.5% (-)Stable IR88-MW25 Trichloroethene 6 6 0 100 5.4 9.9 8.35 0.19 12/10/2019 8.1 8/22/2022 5.4 J 50% (-)Stable IR88-MW25 cis-1,2-Dichloroethene 6 6 0 100 1.1 3.6 1.80 0.52 12/10/2019 1.6 8/22/2022 1.2 J 76.5% (-)Stable IR88-MW25 Vinyl chloride 6 1 5 16.67 0.023 0.023 NA NA 12/10/2019 0.05 UJ 8/22/2022 0.023 J >50% ND >50% ND IR88-MW25 Benzene 6 0 6 0 NA NA NA NA 12/10/2019 0.5 U 8/22/2022 0.5 U >50% ND >50% ND IR88-MW25 Naphthalene 6 0 6 0 NA NA NA NA 12/10/2019 0.5 U 8/22/2022 0.5 U >50% ND >50% ND IR88-MW58 Tetrachloroethene 3 3 0 100 37 320 155.67 0.94 9/22/2021 320 8/22/2022 37 J IS IS IR88-MW58 Trichloroethene 3 3 0 100 20 160 81.33 0.88 9/22/2021 160 8/22/2022 20 J IS IS IR88-MW58 cis-1,2-Dichloroethene 3 3 0 100 230 310 260.00 0.17 9/22/2021 310 8/22/2022 240 IS IS IR88-MW58 Vinyl chloride 3 3 0 100 3.7 14 7.67 0.72 9/22/2021 14 8/22/2022 5.3 IS IS IR88-MW58 Benzene 3 0 3 0 NA NA NA NA 9/22/2021 0.5 U 8/22/2022 0.5 U IS IS IR88-MW58 Naphthalene 3 0 3 0 NA NA NA NA 9/22/2021 0.5 U 8/22/2022 0.5 U IS IS IR88-MW60 Tetrachloroethene 1 1 0 100 133 133 133.00 NA 2/1/2019 133 J 2/1/2019 133 J IS IS IR88-MW60 Trichloroethene 1 1 0 100 24 24 24.00 NA 2/1/2019 24 J 2/1/2019 24 J IS IS IR88-MW60 cis-1,2-Dichloroethene 1 1 0 100 36.6 36.6 36.60 NA 2/1/2019 36.6 J 2/1/2019 36.6 J IS IS IR88-MW60 Vinyl chloride 1 0 1 0 NA NA NA NA 2/1/2019 0.5 U 2/1/2019 0.5 U IS IS IR88-MW60 Benzene 1 0 1 0 NA NA NA NA 2/1/2019 0.5 U 2/1/2019 0.5 U IS IS IR88-MW60 Naphthalene 1 0 1 0 NA NA NA NA 2/1/2019 0.5 UJ 2/1/2019 0.5 UJ IS IS COV = coefficient of variance IS = Insufficient data points to run MK MK = Mann-Kendall NA = Not Applicable ND = Not Detected J = Analyte present, value may or may not be accurate or precise U = The material was analyzed for, but not detected µg/L = microgram(s) per liter 1 of 1 Attachment 4b FY 2021 Zone 1 UCH Aquifer Mann-Kendall Trend Evaluation Attachment 4b. FY 2022 Zone 1 Upper Castle Hayne Aquifer Mann-Kendall Trend Evaluation Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Well Compound Total Samples Detect Non- detect Detection Frequency Min Max Mean COV First Sample Date First Sample Result Most Recent Sample Date Most Recent Sample Result MK Result Trend IR88-MW02IW Tetrachloroethene 7 5 2 71.43 54 247 79.69 0.98 1/31/2019 247 J 8/18/2022 0.5 U 99.7% (sig -)Decreasing IR88-MW02IW Trichloroethene 7 6 1 85.71 0.7 51.6 29.08 0.72 1/31/2019 51.6 J 8/18/2022 0.7 J 98.5% (sig -)Decreasing IR88-MW02IW cis-1,2-Dichloroethene 7 7 0 100 36 460 188.86 0.82 1/31/2019 122 J 8/18/2022 95 J 80.9% (-)Stable IR88-MW02IW Vinyl chloride 7 7 0 100 0.38 110 49.54 0.74 1/31/2019 11.4 J 8/18/2022 46 J 71.9% (-)Stable IR88-MW02IW Benzene 7 1 6 14.29 0.3 0.3 NA NA 1/31/2019 0.5 U 8/18/2022 0.3 J >50% ND >50% ND IR88-MW02IW Naphthalene 7 0 7 0 NA NA NA NA 1/31/2019 0.5 U 8/18/2022 0.5 U >50% ND >50% ND IR88-MW05IW Tetrachloroethene 7 2 5 28.57 3.7 21 NA NA 1/31/2019 50 UJ 8/18/2022 1 U >50% ND >50% ND IR88-MW05IW Trichloroethene 7 0 7 0 NA NA NA NA 1/31/2019 50 UJ 8/18/2022 1 U >50% ND >50% ND IR88-MW05IW cis-1,2-Dichloroethene 7 7 0 100 130 8430 1657.14 1.81 1/31/2019 8430 J 8/18/2022 450 J 71.9% (-)No Trend IR88-MW05IW Vinyl chloride 7 6 1 85.71 440 1600 925.71 0.65 1/31/2019 50 UJ 8/18/2022 840 J 55.7% (+)Stable IR88-MW05IW Benzene 7 4 3 57.14 0.72 1.2 0.96 0.18 1/31/2019 50 UJ 8/18/2022 0.96 J 76.4% (-)Stable IR88-MW05IW Naphthalene 7 0 7 0 NA NA NA NA 1/31/2019 50 UJ 8/18/2022 1 U >50% ND >50% ND IR88-MW30IW Tetrachloroethene 6 0 6 0 NA NA NA NA 12/11/2019 5 U 8/23/2022 20 U >50% ND >50% ND IR88-MW30IW Trichloroethene 6 0 6 0 NA NA NA NA 12/11/2019 5 U 8/23/2022 20 U >50% ND >50% ND IR88-MW30IW cis-1,2-Dichloroethene 6 6 0 100 6000 26000 14350.00 0.48 12/11/2019 6000 8/23/2022 9100 J 57% (+)Stable IR88-MW30IW Vinyl chloride 6 6 0 100 1600 5800 3933.33 0.41 12/11/2019 1600 8/23/2022 4100 64% (+)Stable IR88-MW30IW Benzene 6 0 6 0 NA NA NA NA 12/11/2019 5 U 8/23/2022 20 U >50% ND >50% ND IR88-MW30IW Naphthalene 6 0 6 0 NA NA NA NA 12/11/2019 5 U 8/23/2022 20 U >50% ND >50% ND IR88-MW70UCH Tetrachloroethene 4 1 3 25 3.2 3.2 NA NA 11/9/2020 3.2 8/22/2022 0.5 U >50% ND >50% ND IR88-MW70UCH Trichloroethene 4 1 3 25 1 1 NA NA 11/9/2020 1 8/22/2022 0.5 U >50% ND >50% ND IR88-MW70UCH cis-1,2-Dichloroethene 4 4 0 100 0.46 140 35.51 1.96 11/9/2020 140 8/22/2022 0.93 J 62.5% (-)No Trend IR88-MW70UCH Vinyl chloride 4 4 0 100 0.69 280 72.10 1.92 11/9/2020 280 8/22/2022 0.69 95.8% (sig -)Decreasing IR88-MW70UCH Benzene 4 1 3 25 0.3 0.3 NA NA 11/9/2020 0.5 U 8/22/2022 0.5 U >50% ND >50% ND IR88-MW70UCH Naphthalene 4 0 4 0 NA NA NA NA 11/9/2020 0.5 U 8/22/2022 0.5 U >50% ND >50% ND IR88-RABITTMW1 Tetrachloroethene 7 1 6 14.29 4720 4720 NA NA 1/31/2019 4720 J 8/18/2022 2.5 U >50% ND >50% ND IR88-RABITTMW1 Trichloroethene 7 1 6 14.29 6070 6070 NA NA 1/31/2019 6070 J 8/18/2022 2.5 U >50% ND >50% ND IR88-RABITTMW1 cis-1,2-Dichloroethene 7 5 2 71.43 0.34 7000 3264.39 0.97 1/31/2019 6650 J 8/18/2022 7000 J 88.1% (+)Stable IR88-RABITTMW1 Vinyl chloride 7 7 0 100 0.27 2400 805.15 1.29 1/31/2019 19.5 J 8/18/2022 1800 J 80.9% (+)No Trend IR88-RABITTMW1 Benzene 7 4 3 57.14 0.32 0.64 0.52 0.24 1/31/2019 12.5 U 8/18/2022 2.5 U 61.4% (+)Stable IR88-RABITTMW1 Naphthalene 7 0 7 0 NA NA NA NA 1/31/2019 12.5 U 8/18/2022 2.5 U >50% ND >50% ND COV = coefficient of variance IS = Insufficient data points to run MK MK = Mann-Kendall NA = Not Applicable ND = Not Detected J = Analyte present, value may or may not be accurate or precise U = The material was analyzed for, but not detected 1 of 1 Attachment 4c FY 2021 Zone 3 UCH Aquifer Mann-Kendall Trend Evaluation Attachment 4c. FY 2022 Zone 3 Upper Castle Hayne Aquifer Mann-Kendall Trend Evaluation Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Well Compound Units Total Samples Detect Non- detect Detection Frequency Min Max Mean COV First Sample Result First Sample Date Most Recent Sample Result Most Recent Sample Date MK Result Trend IR88-MW15IW cis-1,2-Dichloroethene µg/L 6 6 0 100 1.2 2.5 1.7 0.283331637 2.5 12/10/2019 1.4 J 8/23/2022 98.2% (sig -)Decreasing IR88-MW15IW Tetrachloroethene µg/L 6 6 0 100 46 69 57.66666667 0.151043017 55 12/10/2019 55 J 8/23/2022 81.4% (-)Stable IR88-MW15IW Trichloroethene µg/L 6 6 0 100 3.1 5.4 4.25 0.187498558 4.8 12/10/2019 3.1 J 8/23/2022 99.2% (sig -)Decreasing IR88-MW15IW Vinyl chloride µg/L 6 0 6 0 NA NA NA NA 0.1 U 12/10/2019 0.1 U 8/23/2022 >50% ND >50% ND IR88-MW20IW Benzene µg/L 1 0 1 0 NA NA NA NA 1 U 1/30/2019 1 U 1/30/2019 >50% ND >50% ND IR88-MW20IW cis-1,2-Dichloroethene µg/L 7 7 0 100 12 92.4 39.62857143 0.717722632 92.4 J 1/30/2019 12 J 8/18/2022 100% (sig -)Decreasing IR88-MW20IW Naphthalene µg/L 1 0 1 0 NA NA NA NA 5 U 1/30/2019 5 U 1/30/2019 >50% ND >50% ND IR88-MW20IW Tetrachloroethene µg/L 7 7 0 100 30 77 48.47142857 0.337606334 50.3 J 1/30/2019 30 J 8/18/2022 98.5% (sig -)Decreasing IR88-MW20IW Trichloroethene µg/L 7 7 0 100 12 15.6 13.8 0.107806346 15.6 J 1/30/2019 15 J 8/18/2022 80.9% (+)Stable IR88-MW20IW Vinyl chloride µg/L 7 6 1 85.71 0.34 1.2 0.564 0.499487763 1 U 1/30/2019 0.34 J 8/18/2022 84.5% (+)Stable IR88-MW21IW Benzene µg/L 1 0 1 0 NA NA NA NA 1 U 2/5/2019 1 U 2/5/2019 >50% ND >50% ND IR88-MW21IW cis-1,2-Dichloroethene µg/L 7 7 0 100 6.6 60 23.01428571 0.882358407 15 2/5/2019 14 8/26/2022 55.7% (+)Stable IR88-MW21IW Naphthalene µg/L 1 0 1 0 NA NA NA NA 5 U 2/5/2019 5 U 2/5/2019 >50% ND >50% ND IR88-MW21IW Tetrachloroethene µg/L 7 7 0 100 14 100 39.1 0.778044461 35.7 2/5/2019 14 8/26/2022 66.6% (-)Stable IR88-MW21IW Trichloroethene µg/L 7 7 0 100 7 54 26.61428571 0.681141796 33.6 2/5/2019 9.9 8/26/2022 50% (-)Stable IR88-MW21IW Vinyl chloride µg/L 7 3 4 42.86 0.025 0.11 NA NA 1 U 2/5/2019 0.1 U 8/26/2022 >50% ND >50% ND IR88-MW22IW Benzene µg/L 1 0 1 0 NA NA NA NA 1 U 1/30/2019 1 U 1/30/2019 >50% ND >50% ND IR88-MW22IW cis-1,2-Dichloroethene µg/L 7 7 0 100 34.2 93 70.88571429 0.261278706 34.2 J 1/30/2019 85 J 8/22/2022 94.8% (+)Stable IR88-MW22IW Naphthalene µg/L 1 0 1 0 NA NA NA NA 5 U 1/30/2019 5 U 1/30/2019 >50% ND >50% ND IR88-MW22IW Tetrachloroethene µg/L 7 4 3 57.14 20 91.8 28.11428571 1.09774257 91.8 J 1/30/2019 1 U 8/22/2022 97.5% (sig -)Decreasing IR88-MW22IW Trichloroethene µg/L 7 7 0 100 5 157 65.15714286 0.99895751 157 J 1/30/2019 5 J 8/22/2022 98.5% (sig -)Decreasing IR88-MW22IW Vinyl chloride µg/L 7 6 1 85.71 18 87 46.57142857 0.601320889 1 U 1/30/2019 18 8/22/2022 76.4% (-)Stable IR88-MW48IW Benzene µg/L 1 0 1 0 NA NA NA NA 1 U 1/30/2019 1 U 1/30/2019 >50% ND >50% ND IR88-MW48IW cis-1,2-Dichloroethene µg/L 7 7 0 100 13.8 53 36.25714286 0.351114017 13.8 J 1/30/2019 32 J 8/18/2022 80.9% (-)Stable IR88-MW48IW Naphthalene µg/L 1 0 1 0 NA NA NA NA 5 U 1/30/2019 5 U 1/30/2019 >50% ND >50% ND IR88-MW48IW Tetrachloroethene µg/L 7 0 7 0 NA NA NA NA 1 U 1/30/2019 1 U 8/18/2022 >50% ND >50% ND IR88-MW48IW Trichloroethene µg/L 7 6 1 85.71 0.4 38.4 6.203809524 2.120157695 38.4 J 1/30/2019 1 U 8/18/2022 99.5% (sig -)Decreasing IR88-MW48IW Vinyl chloride µg/L 7 5 2 71.43 0.068 0.25 0.131 0.484617606 1 U 1/30/2019 0.068 J 8/18/2022 66.6% (-)Stable IR88-MW49IW Benzene µg/L 1 0 1 0 NA NA NA NA 1 UJ 2/4/2019 1 UJ 2/4/2019 >50% ND >50% ND IR88-MW49IW cis-1,2-Dichloroethene µg/L 7 7 0 100 2 3.88 2.811428571 0.234391398 3.88 J 2/4/2019 2 J 8/23/2022 97.5% (sig -)Decreasing IR88-MW49IW Naphthalene µg/L 1 0 1 0 NA NA NA NA 5 UJ 2/4/2019 5 UJ 2/4/2019 >50% ND >50% ND IR88-MW49IW Tetrachloroethene µg/L 7 0 7 0 NA NA NA NA 1 UJ 2/4/2019 1 U 8/23/2022 >50% ND >50% ND IR88-MW49IW Trichloroethene µg/L 7 7 0 100 3.7 18.1 11.1 0.558219407 18.1 J 2/4/2019 4.2 J 8/23/2022 99.9% (sig -)Decreasing IR88-MW49IW Vinyl chloride µg/L 7 6 1 85.71 0.018 0.054 0.028666667 0.447485614 1 UJ 2/4/2019 0.018 J 8/23/2022 61.4% (+)Stable IR88-MW63UCH Benzene µg/L 1 0 1 0 NA NA NA NA 1 U 2/4/2019 1 U 2/4/2019 >50% ND >50% ND IR88-MW63UCH cis-1,2-Dichloroethene µg/L 7 7 0 100 5.2 12.3 7.757142857 0.395791366 12.3 2/4/2019 5.4 J 8/22/2022 88.1% (-)Stable IR88-MW63UCH Naphthalene µg/L 1 0 1 0 NA NA NA NA 5 U 2/4/2019 5 U 2/4/2019 >50% ND >50% ND IR88-MW63UCH Tetrachloroethene µg/L 7 1 6 14.29 2 2 NA NA 1 U 2/4/2019 1 U 8/22/2022 >50% ND >50% ND IR88-MW63UCH Trichloroethene µg/L 7 7 0 100 0.72 2.7 2.02 0.32184564 2.52 2/4/2019 0.72 J 8/22/2022 88.1% (-)Stable IR88-MW63UCH Vinyl chloride µg/L 7 5 2 71.43 0.084 0.3 0.162583333 0.511269267 1 U 2/4/2019 0.093 J 8/22/2022 55.7% (+)Stable IR88-MW64UCH Benzene µg/L 1 0 1 0 NA NA NA NA 1 U 2/1/2019 1 U 2/1/2019 >50% ND >50% ND IR88-MW64UCH cis-1,2-Dichloroethene µg/L 7 7 0 100 42 159 98.28571429 0.489596938 159 J 2/1/2019 42 8/22/2022 99.9% (sig -)Decreasing IR88-MW64UCH Naphthalene µg/L 1 0 1 0 NA NA NA NA 5 UJ 2/1/2019 5 UJ 2/1/2019 >50% ND >50% ND IR88-MW64UCH Tetrachloroethene µg/L 7 5 2 71.43 0.42 25.7 7.751428571 1.234825247 25.7 J 2/1/2019 1 U 8/22/2022 100% (sig -)Decreasing IR88-MW64UCH Trichloroethene µg/L 7 7 0 100 3.6 129 37.41428571 1.278205916 129 J 2/1/2019 3.6 8/22/2022 100% (sig -)Decreasing IR88-MW64UCH Vinyl chloride µg/L 7 6 1 85.71 0.063 1.2 0.243257143 1.607398808 1 U 2/1/2019 0.087 J 8/22/2022 80.9% (+)No Trend 1 of 2 Attachment 4c. FY 2022 Zone 3 Upper Castle Hayne Aquifer Mann-Kendall Trend Evaluation Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Well Compound Units Total Samples Detect Non- detect Detection Frequency Min Max Mean COV First Sample Result First Sample Date Most Recent Sample Result Most Recent Sample Date MK Result Trend IR88-MW65UCH Benzene µg/L 1 0 1 0 NA NA NA NA 1 U 1/29/2019 1 U 1/29/2019 >50% ND >50% ND IR88-MW65UCH cis-1,2-Dichloroethene µg/L 7 7 0 100 4.8 24 12.95714286 0.579874107 17.4 J 1/29/2019 6.7 J 8/22/2022 98.5% (sig -)Decreasing IR88-MW65UCH Naphthalene µg/L 1 0 1 0 NA NA NA NA 5 U 1/29/2019 5 U 1/29/2019 >50% ND >50% ND IR88-MW65UCH Tetrachloroethene µg/L 7 0 7 0 NA NA NA NA 1 U 1/29/2019 1 U 8/22/2022 >50% ND >50% ND IR88-MW65UCH Trichloroethene µg/L 7 7 0 100 1.2 15.1 4.442857143 1.104718835 15.1 J 1/29/2019 1.2 J 8/22/2022 99.9% (sig -)Decreasing IR88-MW65UCH Vinyl chloride µg/L 7 6 1 85.71 0.052 0.19 0.091166667 0.525647402 1 U 1/29/2019 0.053 J 8/22/2022 80.9% (+)Stable IR88-MW66UCH Benzene µg/L 1 0 1 0 NA NA NA NA 1 U 2/1/2019 1 U 2/1/2019 >50% ND >50% ND IR88-MW66UCH cis-1,2-Dichloroethene µg/L 7 7 0 100 0.65 120 31.16428571 1.442078255 63.9 J 2/1/2019 1.4 8/24/2022 99.5% (sig -)Decreasing IR88-MW66UCH Naphthalene µg/L 1 0 1 0 NA NA NA NA 5 U 2/1/2019 5 U 2/1/2019 >50% ND >50% ND IR88-MW66UCH Tetrachloroethene µg/L 7 1 6 14.29 77.6 77.6 NA NA 77.6 J 2/1/2019 1 U 8/24/2022 >50% ND >50% ND IR88-MW66UCH Trichloroethene µg/L 7 3 4 42.86 1 162 NA NA 162 J 2/1/2019 1 U 8/24/2022 >50% ND >50% ND IR88-MW66UCH Vinyl chloride µg/L 7 7 0 100 9.7 88 38.67142857 0.725642739 9.7 J 2/1/2019 15 8/24/2022 61.4% (-)Stable IR88-MW67UCH Benzene µg/L 1 0 1 0 NA NA NA NA 1 U 2/1/2019 1 U 2/1/2019 >50% ND >50% ND IR88-MW67UCH cis-1,2-Dichloroethene µg/L 7 6 1 85.71 4.5 8.4 5.7 0.4037811 1 U 2/1/2019 5.4 J 8/18/2022 50% (-)Stable IR88-MW67UCH Naphthalene µg/L 1 0 1 0 NA NA NA NA 5 UJ 2/1/2019 5 UJ 2/1/2019 >50% ND >50% ND IR88-MW67UCH Tetrachloroethene µg/L 7 0 7 0 NA NA NA NA 1 U 2/1/2019 1 U 8/18/2022 >50% ND >50% ND IR88-MW67UCH Trichloroethene µg/L 7 7 0 100 2.1 7.36 4.751428571 0.384895047 7.36 J 2/1/2019 2.1 J 8/18/2022 99.5% (sig -)Decreasing IR88-MW67UCH Vinyl chloride µg/L 7 5 2 71.43 0.032 0.07 0.0504 0.310843746 1 U 2/1/2019 0.032 J 8/18/2022 71.9% (-)Stable IR88-MW68UCH Benzene µg/L 1 0 1 0 NA NA NA NA 2 U 1/30/2019 2 U 1/30/2019 >50% ND >50% ND IR88-MW68UCH cis-1,2-Dichloroethene µg/L 7 7 0 100 42.4 120 81.62857143 0.366092985 42.4 J 1/30/2019 83 J 8/23/2022 88.1% (+)Stable IR88-MW68UCH Naphthalene µg/L 1 0 1 0 NA NA NA NA 10 U 1/30/2019 10 U 1/30/2019 >50% ND >50% ND IR88-MW68UCH Tetrachloroethene µg/L 7 7 0 100 140 440 236.7142857 0.462814173 257 J 1/30/2019 150 J 8/23/2022 55.7% (-)Stable IR88-MW68UCH Trichloroethene µg/L 7 7 0 100 48.6 100 78.51428571 0.224220224 48.6 J 1/30/2019 86 J 8/23/2022 88.1% (+)Stable IR88-MW68UCH Vinyl chloride µg/L 7 6 1 85.71 0.34 1.8 0.763333333 0.650229925 2 U 1/30/2019 0.34 J 8/23/2022 80.9% (-)Stable IR88-MW69UCH Benzene µg/L 1 0 1 0 NA NA NA NA 1 U 2/4/2019 1 U 2/4/2019 >50% ND >50% ND IR88-MW69UCH cis-1,2-Dichloroethene µg/L 7 7 0 100 3.7 10 6.04 0.463710167 9.78 2/4/2019 3.7 J 8/22/2022 90.6% (-)Stable IR88-MW69UCH Naphthalene µg/L 1 0 1 0 NA NA NA NA 5 U 2/4/2019 5 U 2/4/2019 >50% ND >50% ND IR88-MW69UCH Tetrachloroethene µg/L 7 7 0 100 0.61 5.1 2.002857143 0.866348639 3.52 2/4/2019 0.61 J 8/22/2022 99.5% (sig -)Decreasing IR88-MW69UCH Trichloroethene µg/L 7 7 0 100 3.4 8.5 5.288571429 0.311290675 5.62 2/4/2019 4.2 J 8/22/2022 80.9% (-)Stable IR88-MW69UCH Vinyl chloride µg/L 7 6 1 85.71 0.021 0.051 0.038833333 0.275515087 1 U 2/4/2019 0.021 J 8/22/2022 80.9% (-)Stable COV = coefficient of variance MK = Mann-Kendall NA = Not Applicable ND = Not Detected J = Analyte present, value may or may not be accurate or precise U = The material was analyzed for, but not detected 2 of 2 Attachment 5 Historical Analytical Results Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW02 3839088.149 284803.493 1/18/2000 GW Benzene 5 U UG_L 5 N IR88-MW02 3839088.149 284803.493 1/18/2000 GW cis-1,2-Dichloroethene 29 UG_L 5 Y IR88-MW02 3839088.149 284803.493 1/18/2000 GW Ethane 9.6 U UG_L 9.6 N IR88-MW02 3839088.149 284803.493 1/18/2000 GW Ethene 9 U UG_L 9 N IR88-MW02 3839088.149 284803.493 1/18/2000 GW Methane 360 UG_L 5.2 Y IR88-MW02 3839088.149 284803.493 1/18/2000 GW Tetrachloroethene 10000 UG_L 500 Y IR88-MW02 3839088.149 284803.493 1/18/2000 GW Trichloroethene 370 J UG_L 5 Y IR88-MW02 3839088.149 284803.493 1/18/2000 GW Vinyl chloride 2 U UG_L 2 N IR88-MW02 3839088.149 284803.493 1/21/2000 GW Nitrate 410 UG_L 100 Y IR88-MW02 3839088.149 284803.493 7/18/2000 GW Benzene 5 U UG_L 5 N IR88-MW02 3839088.149 284803.493 7/18/2000 GW Chloride 10000 UG_L 2000 Y IR88-MW02 3839088.149 284803.493 7/18/2000 GW cis-1,2-Dichloroethene 30 UG_L 5 Y IR88-MW02 3839088.149 284803.493 7/18/2000 GW Nitrate 200 UG_L 50 Y IR88-MW02 3839088.149 284803.493 7/18/2000 GW Tetrachloroethene 15000 E UG_L 5 Y IR88-MW02 3839088.149 284803.493 7/18/2000 GW Trichloroethene 190 UG_L 5 Y IR88-MW02 3839088.149 284803.493 7/18/2000 GW Vinyl chloride 2 U UG_L 2 N IR88-MW02 3839088.149 284803.493 1/18/2000 GW Benzene 5 U UG_L 5 N IR88-MW02 3839088.149 284803.493 1/18/2000 GW cis-1,2-Dichloroethene 29 UG_L 5 Y IR88-MW02 3839088.149 284803.493 1/18/2000 GW Ethane 9.6 U UG_L 9.6 N IR88-MW02 3839088.149 284803.493 1/18/2000 GW Ethene 9 U UG_L 9 N IR88-MW02 3839088.149 284803.493 1/18/2000 GW Methane 360 UG_L 5.2 Y IR88-MW02 3839088.149 284803.493 1/18/2000 GW Nitrate 410 UG_L 100 Y IR88-MW02 3839088.149 284803.493 1/18/2000 GW Tetrachloroethene 10000 UG_L 500 Y IR88-MW02 3839088.149 284803.493 1/18/2000 GW Trichloroethene 370 J UG_L 5 Y IR88-MW02 3839088.149 284803.493 1/18/2000 GW Vinyl chloride 2 U UG_L 2 N IR88-MW02 3839088.149 284803.493 1/16/2001 GW Benzene 5 U UG_L 5 N IR88-MW02 3839088.149 284803.493 1/16/2001 GW cis-1,2-Dichloroethene 13 UG_L 5 Y IR88-MW02 3839088.149 284803.493 1/16/2001 GW Tetrachloroethene 11000 UG_L 500 Y IR88-MW02 3839088.149 284803.493 1/16/2001 GW Trichloroethene 80 UG_L 5 Y IR88-MW02 3839088.149 284803.493 1/16/2001 GW Vinyl chloride 2 U UG_L 2 N IR88-MW02 3839088.149 284803.493 7/14/2001 GW Benzene 5 U UG_L 5 N IR88-MW02 3839088.149 284803.493 7/14/2001 GW cis-1,2-Dichloroethene 5 U UG_L 5 N IR88-MW02 3839088.149 284803.493 7/14/2001 GW Tetrachloroethene 74 UG_L 5 Y IR88-MW02 3839088.149 284803.493 7/14/2001 GW Trichloroethene 5 U UG_L 5 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW02 3839088.149 284803.493 7/14/2001 GW Vinyl chloride 2 U UG_L 2 N IR88-MW02 3839088.149 284803.493 7/26/2002 GW Benzene 10 U UG_L 10 N IR88-MW02 3839088.149 284803.493 7/26/2002 GW Chloride 9420 UG_L 2000 Y IR88-MW02 3839088.149 284803.493 7/26/2002 GW cis-1,2-Dichloroethene 10 U UG_L 10 N IR88-MW02 3839088.149 284803.493 7/26/2002 GW Ethane 2 U UG_L 2 N IR88-MW02 3839088.149 284803.493 7/26/2002 GW Ethene 2 U UG_L 2 N IR88-MW02 3839088.149 284803.493 7/26/2002 GW Ferrous iron 100 U UG_L 100 N IR88-MW02 3839088.149 284803.493 7/26/2002 GW Methane 0.3 U UG_L 1 N IR88-MW02 3839088.149 284803.493 7/26/2002 GW Nitrate 50 U UG_L 50 N IR88-MW02 3839088.149 284803.493 7/26/2002 GW Tetrachloroethene 45 UG_L 10 Y IR88-MW02 3839088.149 284803.493 7/26/2002 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW02 3839088.149 284803.493 7/26/2002 GW Trichloroethene 1 J UG_L 10 Y IR88-MW02 3839088.149 284803.493 7/26/2002 GW Vinyl chloride 10 U UG_L 10 N IR88-MW02 3839088.149 284803.493 10/6/2003 GW Benzene 1 U UG_L 1 N IR88-MW02 3839088.149 284803.493 10/6/2003 GW Chloride 5700 UG_L 0 Y IR88-MW02 3839088.149 284803.493 10/6/2003 GW cis-1,2-Dichloroethene 1 UG_L 1 Y IR88-MW02 3839088.149 284803.493 10/6/2003 GW Ethane 10 U UG_L 10 N IR88-MW02 3839088.149 284803.493 10/6/2003 GW Ethene 10 U UG_L 10 N IR88-MW02 3839088.149 284803.493 10/6/2003 GW Methane 10 U UG_L 10 N IR88-MW02 3839088.149 284803.493 10/6/2003 GW Nitrate 930 UG_L 0 Y IR88-MW02 3839088.149 284803.493 10/6/2003 GW Nitrite 50 U UG_L 50 N IR88-MW02 3839088.149 284803.493 10/6/2003 GW Tetrachloroethene 16 UG_L 1 Y IR88-MW02 3839088.149 284803.493 10/6/2003 GW Total organic carbon (TOC) 1000 U UG_L 0 N IR88-MW02 3839088.149 284803.493 10/6/2003 GW Trichloroethene 4 UG_L 1 Y IR88-MW02 3839088.149 284803.493 10/6/2003 GW Vinyl chloride 0.8 J UG_L 2 Y IR88-MW02 3839088.149 284803.493 10/6/2003 GW Sulfide 1000 U UG_L 0 N IR88-MW02 3839088.149 284803.493 10/28/2004 GW Alkalinity 34000 UG_L 5000 Y IR88-MW02 3839088.149 284803.493 10/28/2004 GW Benzene 10 U UG_L 10 N IR88-MW02 3839088.149 284803.493 10/28/2004 GW Chloride 6600 UG_L 2000 Y IR88-MW02 3839088.149 284803.493 10/28/2004 GW cis-1,2-Dichloroethene 12 UG_L 10 Y IR88-MW02 3839088.149 284803.493 10/28/2004 GW Ethane 10 U UG_L 10 N IR88-MW02 3839088.149 284803.493 10/28/2004 GW Ethene 10 U UG_L 10 N IR88-MW02 3839088.149 284803.493 10/28/2004 GW Methane 29 UG_L 10 Y IR88-MW02 3839088.149 284803.493 10/28/2004 GW Nitrate 2500 UG_L 100 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW02 3839088.149 284803.493 10/28/2004 GW Nitrite 50 U UG_L 50 N IR88-MW02 3839088.149 284803.493 10/28/2004 GW Tetrachloroethene 6000 UG_L 1000 Y IR88-MW02 3839088.149 284803.493 10/28/2004 GW Trichloroethene 71 UG_L 10 Y IR88-MW02 3839088.149 284803.493 10/28/2004 GW Vinyl chloride 10 U UG_L 10 N IR88-MW02 3839088.149 284803.493 10/28/2004 GW Sulfide 1500 J- UG_L 1000 Y IR88-MW02 3839088.149 284803.493 11/19/2005 GW Alkalinity 16900 UG_L 10000 Y IR88-MW02 3839088.149 284803.493 11/19/2005 GW Benzene 1300 U UG_L 1300 N IR88-MW02 3839088.149 284803.493 11/19/2005 GW Chloride 6560 UG_L 2000 Y IR88-MW02 3839088.149 284803.493 11/19/2005 GW cis-1,2-Dichloroethene 1300 U UG_L 1300 N IR88-MW02 3839088.149 284803.493 11/19/2005 GW Ethane 14 UG_L 2 Y IR88-MW02 3839088.149 284803.493 11/19/2005 GW Ethene 36 UG_L 2 Y IR88-MW02 3839088.149 284803.493 11/19/2005 GW Ferric iron 8100 UG_L 400 Y IR88-MW02 3839088.149 284803.493 11/19/2005 GW Methane 17 UG_L 1 Y IR88-MW02 3839088.149 284803.493 11/19/2005 GW Nitrate 2050 UG_L 50 Y IR88-MW02 3839088.149 284803.493 11/19/2005 GW Nitrite 110 UG_L 50 Y IR88-MW02 3839088.149 284803.493 11/19/2005 GW Tetrachloroethene 48000 UG_L 1300 Y IR88-MW02 3839088.149 284803.493 11/19/2005 GW Total organic carbon (TOC) 8300 UG_L 5000 Y IR88-MW02 3839088.149 284803.493 11/19/2005 GW Trichloroethene 540 J UG_L 1300 Y IR88-MW02 3839088.149 284803.493 11/19/2005 GW Vinyl chloride 1300 U UG_L 1300 N IR88-MW02 3839088.149 284803.493 11/19/2005 GW Sulfide 3000 UG_L 1000 Y IR88-MW02 3839088.149 284803.493 8/10/2007 GW Alkalinity 8490 J UG_L 10000 Y IR88-MW02 3839088.149 284803.493 8/10/2007 GW Benzene 310 U UG_L 310 N IR88-MW02 3839088.149 284803.493 8/10/2007 GW Chloride 26000 UG_L 2000 Y IR88-MW02 3839088.149 284803.493 8/10/2007 GW cis-1,2-Dichloroethene 13000 UG_L 310 Y IR88-MW02 3839088.149 284803.493 8/10/2007 GW Ethane 94 UG_L 2 Y IR88-MW02 3839088.149 284803.493 8/10/2007 GW Ethene 170 UG_L 3 Y IR88-MW02 3839088.149 284803.493 8/10/2007 GW Ferric iron 3370 UG_L 400 Y IR88-MW02 3839088.149 284803.493 8/10/2007 GW Ferrous iron 3360 UG_L 400 Y IR88-MW02 3839088.149 284803.493 8/10/2007 GW Methane 24 UG_L 1 Y IR88-MW02 3839088.149 284803.493 8/10/2007 GW Nitrate 50 U UG_L 50 N IR88-MW02 3839088.149 284803.493 8/10/2007 GW Nitrite 50 U UG_L 50 N IR88-MW02 3839088.149 284803.493 8/10/2007 GW Tetrachloroethene 12000 UG_L 310 Y IR88-MW02 3839088.149 284803.493 8/10/2007 GW Total organic carbon (TOC) 2470 J UG_L 5000 Y IR88-MW02 3839088.149 284803.493 8/10/2007 GW Trichloroethene 800 UG_L 310 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW02 3839088.149 284803.493 8/10/2007 GW Vinyl chloride 310 U UG_L 310 N IR88-MW02 3839088.149 284803.493 8/10/2007 GW Sulfide 2000 UG_L 1000 Y IR88-MW02 3839088.149 284803.493 10/16/2011 GW Benzene 50 U UG_L 25 100 50 N IR88-MW02 3839088.149 284803.493 10/16/2011 GW cis-1,2-Dichloroethene 10500 UG_L 25 100 50 Y IR88-MW02 3839088.149 284803.493 10/16/2011 GW Tetrachloroethene 48.4 J UG_L 25 100 50 Y IR88-MW02 3839088.149 284803.493 10/16/2011 GW Trichloroethene 50 U UG_L 25 100 50 N IR88-MW02 3839088.149 284803.493 10/16/2011 GW Vinyl chloride 497 UG_L 25 100 50 Y IR88-MW02 3839088.149 284803.493 10/23/2014 GW Benzene 6.23 J UG_L 5 20 10 Y IR88-MW02 3839088.149 284803.493 10/23/2014 GW cis-1,2-Dichloroethene 4990 UG_L 12.5 50 25 Y IR88-MW02 3839088.149 284803.493 10/23/2014 GW Naphthalene 10 U UG_L 5 20 10 N IR88-MW02 3839088.149 284803.493 10/23/2014 GW Tetrachloroethene 157 UG_L 5 20 10 Y IR88-MW02 3839088.149 284803.493 10/23/2014 GW Trichloroethene 27.2 UG_L 5 20 10 Y IR88-MW02 3839088.149 284803.493 10/23/2014 GW Vinyl chloride 1210 UG_L 5 20 10 Y IR88-MW02 3839088.149 284803.493 1/31/2019 GW Alkalinity 47.4 MG_L 0.26 1 0.5 Y IR88-MW02 3839088.149 284803.493 1/31/2019 GW BAV1 R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW02 3839088.149 284803.493 1/31/2019 GW Benzene 2.67 J UG_L 0.4 2 1 Y IR88-MW02 3839088.149 284803.493 1/31/2019 GW Chloride 15 MG_L 0.25 1 0.5 Y IR88-MW02 3839088.149 284803.493 1/31/2019 GW cis-1,2-Dichloroethene 198 J UG_L 0.4 2 1 Y IR88-MW02 3839088.149 284803.493 1/31/2019 GW Dehalococcoides 0.3 J CELLS_ML 0.1 0.5 Y IR88-MW02 3839088.149 284803.493 1/31/2019 GW Ethane 0.161 MG_L 0.011 0.1 0.022 Y IR88-MW02 3839088.149 284803.493 1/31/2019 GW Ethene 1.41 MG_L 0.015 0.1 0.029 Y IR88-MW02 3839088.149 284803.493 1/31/2019 GW Methane 2.84 MG_L 0.0435 0.2 0.109 Y IR88-MW02 3839088.149 284803.493 1/31/2019 GW Naphthalene 1 U UG_L 0.4 10 1 N IR88-MW02 3839088.149 284803.493 1/31/2019 GW Nitrate 0.114 J MG_L 0.1 0.2 0.15 Y IR88-MW02 3839088.149 284803.493 1/31/2019 GW Nitrite 0.15 U MG_L 0.1 0.2 0.15 N IR88-MW02 3839088.149 284803.493 1/31/2019 GW TCE R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW02 3839088.149 284803.493 1/31/2019 GW Tetrachloroethene 70.6 J UG_L 0.4 2 1 Y IR88-MW02 3839088.149 284803.493 1/31/2019 GW Total organic carbon (TOC) 9.91 MG_L 0.3 2 1 Y IR88-MW02 3839088.149 284803.493 1/31/2019 GW Trichloroethene 4.88 J UG_L 0.4 2 1 Y IR88-MW02 3839088.149 284803.493 1/31/2019 GW VC R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW02 3839088.149 284803.493 1/31/2019 GW Vinyl chloride 121 J UG_L 0.4 2 1 Y IR88-MW02 3839088.149 284803.493 1/31/2019 GW Sulfide 1.5 U MG_L 1.08 2 1.5 N IR88-MW02 3839088.149 284803.493 12/11/2019 GW Alkalinity 35 MG_L 0.23 5 4 Y IR88-MW02 3839088.149 284803.493 12/11/2019 GW BAV1 R-Dase 0.4 U CELLS_ML 0.083 0.4 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW02 3839088.149 284803.493 12/11/2019 GW Benzene 3.8 J UG_L 0.26 1 0.5 Y IR88-MW02 3839088.149 284803.493 12/11/2019 GW Chloride 30 MG_L 0.2 4 2 Y IR88-MW02 3839088.149 284803.493 12/11/2019 GW cis-1,2-Dichloroethene 200 UG_L 0.42 2 1 Y IR88-MW02 3839088.149 284803.493 12/11/2019 GW Dehalococcoides 148 CELLS_ML 0.083 0.4 Y IR88-MW02 3839088.149 284803.493 12/11/2019 GW Ethane 0.18 MG_L 0.0022 0.01 0.005 Y IR88-MW02 3839088.149 284803.493 12/11/2019 GW Ethene 1.1 MG_L 0.002 0.01 0.005 Y IR88-MW02 3839088.149 284803.493 12/11/2019 GW Methane 4.5 MG_L 0.048 0.25 0.12 Y IR88-MW02 3839088.149 284803.493 12/11/2019 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW02 3839088.149 284803.493 12/11/2019 GW TCE R-Dase 0.4 U CELLS_ML 0.083 0.4 N IR88-MW02 3839088.149 284803.493 12/11/2019 GW Tetrachloroethene 47 J UG_L 0.4 1 0.5 Y IR88-MW02 3839088.149 284803.493 12/11/2019 GW Total organic carbon (TOC) 8.9 MG_L 0.1 1 0.5 Y IR88-MW02 3839088.149 284803.493 12/11/2019 GW Trichloroethene 14 J UG_L 0.28 1 0.5 Y IR88-MW02 3839088.149 284803.493 12/11/2019 GW VC R-Dase 0.093 J CELLS_ML 0.083 0.4 Y IR88-MW02 3839088.149 284803.493 12/11/2019 GW Vinyl chloride 140 UG_L 0.5 4 2 Y IR88-MW02 3839088.149 284803.493 12/11/2019 GW Sulfide 1.9 MG_L 0.69 1 0.8 Y IR88-MW02 3839088.149 284803.493 4/14/2020 GW Alkalinity 51 MG_L 0.23 5 4 Y IR88-MW02 3839088.149 284803.493 4/14/2020 GW BAV1 R-Dase 0.4 U CELLS_ML 0.074 0.4 N IR88-MW02 3839088.149 284803.493 4/14/2020 GW Benzene 4.2 UG_L 0.26 1 0.5 Y IR88-MW02 3839088.149 284803.493 4/14/2020 GW Chloride 24 MG_L 0.2 4 2 Y IR88-MW02 3839088.149 284803.493 4/14/2020 GW cis-1,2-Dichloroethene 110 UG_L 0.21 1 0.5 Y IR88-MW02 3839088.149 284803.493 4/14/2020 GW Dehalococcoides 131 CELLS_ML 0.074 0.4 Y IR88-MW02 3839088.149 284803.493 4/14/2020 GW Ethane 0.18 J MG_L 0.044 0.2 0.1 Y IR88-MW02 3839088.149 284803.493 4/14/2020 GW Ethene 1.3 MG_L 0.039 0.2 0.1 Y IR88-MW02 3839088.149 284803.493 4/14/2020 GW Methane 6 MG_L 0.039 0.2 0.1 Y IR88-MW02 3839088.149 284803.493 4/14/2020 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW02 3839088.149 284803.493 4/14/2020 GW TCE R-Dase 0.4 U CELLS_ML 0.074 0.4 N IR88-MW02 3839088.149 284803.493 4/14/2020 GW Tetrachloroethene 20 UG_L 0.4 1 0.5 Y IR88-MW02 3839088.149 284803.493 4/14/2020 GW Total organic carbon (TOC) 5.6 MG_L 0.1 1 0.5 Y IR88-MW02 3839088.149 284803.493 4/14/2020 GW Trichloroethene 5.4 UG_L 0.28 1 0.5 Y IR88-MW02 3839088.149 284803.493 4/14/2020 GW VC R-Dase 0.4 U CELLS_ML 0.074 0.4 N IR88-MW02 3839088.149 284803.493 4/14/2020 GW Vinyl chloride 97 UG_L 0.25 2 1 Y IR88-MW02 3839088.149 284803.493 4/14/2020 GW Sulfide 1.6 MG_L 0.69 1 0.8 Y IR88-MW02 3839088.149 284803.493 11/9/2020 GW Alkalinity 46 MG_L 0.23 5 4 Y IR88-MW02 3839088.149 284803.493 11/9/2020 GW BAV1 R-Dase 0.6 U CELLS_ML 0.1 0.6 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW02 3839088.149 284803.493 11/9/2020 GW Benzene 3 UG_L 0.26 1 0.5 Y IR88-MW02 3839088.149 284803.493 11/9/2020 GW Chloride 15 MG_L 0.0993 2 1 Y IR88-MW02 3839088.149 284803.493 11/9/2020 GW cis-1,2-Dichloroethene 92 UG_L 0.21 1 0.5 Y IR88-MW02 3839088.149 284803.493 11/9/2020 GW Dehalococcoides 85.2 CELLS_ML 0.1 0.6 Y IR88-MW02 3839088.149 284803.493 11/9/2020 GW Ethane 0.2 J MG_L 0.055 0.25 0.12 Y IR88-MW02 3839088.149 284803.493 11/9/2020 GW Ethene 0.93 MG_L 0.049 0.25 0.12 Y IR88-MW02 3839088.149 284803.493 11/9/2020 GW Methane 6.7 MG_L 0.048 0.25 0.12 Y IR88-MW02 3839088.149 284803.493 11/9/2020 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW02 3839088.149 284803.493 11/9/2020 GW TCE R-Dase 0.8 CELLS_ML 0.1 0.6 Y IR88-MW02 3839088.149 284803.493 11/9/2020 GW Tetrachloroethene 29 UG_L 0.4 1 0.5 Y IR88-MW02 3839088.149 284803.493 11/9/2020 GW Total organic carbon (TOC) 5.9 MG_L 0.1 1 0.5 Y IR88-MW02 3839088.149 284803.493 11/9/2020 GW Trichloroethene 6 UG_L 0.28 1 0.5 Y IR88-MW02 3839088.149 284803.493 11/9/2020 GW VC R-Dase 0.6 U CELLS_ML 0.1 0.6 N IR88-MW02 3839088.149 284803.493 11/9/2020 GW Vinyl chloride 84 UG_L 1.7 10 5 Y IR88-MW02 3839088.149 284803.493 11/9/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW02 3839088.149 284803.493 9/8/2021 GW Alkalinity 49 MG_L 0.23 5 4 Y IR88-MW02 3839088.149 284803.493 9/8/2021 GW BAV1 R-Dase 0.3 U CELLS_ML 0.069 0.3 N IR88-MW02 3839088.149 284803.493 9/8/2021 GW Benzene 3.8 J UG_L 0.26 1 0.5 Y IR88-MW02 3839088.149 284803.493 9/8/2021 GW Chloride 13 MG_L 0.099 2 1 Y IR88-MW02 3839088.149 284803.493 9/8/2021 GW cis-1,2-Dichloroethene 72 J UG_L 0.21 1 0.5 Y IR88-MW02 3839088.149 284803.493 9/8/2021 GW Dehalococcoides 85.3 CELLS_ML 0.069 0.3 Y IR88-MW02 3839088.149 284803.493 9/8/2021 GW Ethane 0.36 MG_L 0.044 0.2 0.1 Y IR88-MW02 3839088.149 284803.493 9/8/2021 GW Ethene 0.3 MG_L 0.039 0.2 0.1 Y IR88-MW02 3839088.149 284803.493 9/8/2021 GW Methane 7.4 MG_L 0.039 0.2 0.1 Y IR88-MW02 3839088.149 284803.493 9/8/2021 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW02 3839088.149 284803.493 9/8/2021 GW Nitrate 0.12 U MG_L 0.076 0.25 0.12 N IR88-MW02 3839088.149 284803.493 9/8/2021 GW Nitrite 0.025 U MG_L 0.0032 0.05 0.025 N IR88-MW02 3839088.149 284803.493 9/8/2021 GW TCE R-Dase 0.3 U CELLS_ML 0.069 0.3 N IR88-MW02 3839088.149 284803.493 9/8/2021 GW Tetrachloroethene 26 J UG_L 0.4 1 0.5 Y IR88-MW02 3839088.149 284803.493 9/8/2021 GW Total organic carbon (TOC) 1.5 MG_L 0.1 1 0.5 Y IR88-MW02 3839088.149 284803.493 9/8/2021 GW Trichloroethene 8.5 J UG_L 0.28 1 0.5 Y IR88-MW02 3839088.149 284803.493 9/8/2021 GW VC R-Dase 0.3 U CELLS_ML 0.069 0.3 N IR88-MW02 3839088.149 284803.493 9/8/2021 GW Vinyl chloride 96 J UG_L 0.25 2 1 Y IR88-MW02 3839088.149 284803.493 9/8/2021 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW02 3839088.149 284803.493 3/2/2022 GW Alkalinity 43 MG_L 0.23 5 4 Y IR88-MW02 3839088.149 284803.493 3/2/2022 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW02 3839088.149 284803.493 3/2/2022 GW Benzene 2.7 UG_L 0.26 1 0.5 Y IR88-MW02 3839088.149 284803.493 3/2/2022 GW Chloride 13 MG_L 0.099 2 1 Y IR88-MW02 3839088.149 284803.493 3/2/2022 GW cis-1,2-Dichloroethene 88 UG_L 0.21 1 0.5 Y IR88-MW02 3839088.149 284803.493 3/2/2022 GW Dehalococcoides 39.8 CELLS_ML 0.05 0.3 Y IR88-MW02 3839088.149 284803.493 3/2/2022 GW Ethane 0.22 MG_L 0.0022 0.01 0.005 Y IR88-MW02 3839088.149 284803.493 3/2/2022 GW Ethene 0.45 MG_L 0.002 0.01 0.005 Y IR88-MW02 3839088.149 284803.493 3/2/2022 GW Methane 9.5 MG_L 0.048 0.25 0.12 Y IR88-MW02 3839088.149 284803.493 3/2/2022 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW02 3839088.149 284803.493 3/2/2022 GW Nitrate 0.051 MG_L 0.017 0.05 0.025 Y IR88-MW02 3839088.149 284803.493 3/2/2022 GW Nitrite 0.31 MG_L 0.0092 0.05 0.025 Y IR88-MW02 3839088.149 284803.493 3/2/2022 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW02 3839088.149 284803.493 3/2/2022 GW Tetrachloroethene 82 UG_L 0.4 1 0.5 Y IR88-MW02 3839088.149 284803.493 3/2/2022 GW Total organic carbon (TOC) 3.6 MG_L 0.1 1 0.5 Y IR88-MW02 3839088.149 284803.493 3/2/2022 GW Trichloroethene 9.6 UG_L 0.28 1 0.5 Y IR88-MW02 3839088.149 284803.493 3/2/2022 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW02 3839088.149 284803.493 3/2/2022 GW Vinyl chloride 97 UG_L 0.25 2 1 Y IR88-MW02 3839088.149 284803.493 3/2/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW02 3839088.149 284803.493 8/18/2022 GW Alkalinity 40 MG_L 0.23 5 4 Y IR88-MW02 3839088.149 284803.493 8/18/2022 GW Benzene 3.5 UG_L 0.26 1 0.5 Y IR88-MW02 3839088.149 284803.493 8/18/2022 GW Chloride 14 MG_L 0.099 2 1 Y IR88-MW02 3839088.149 284803.493 8/18/2022 GW cis-1,2-Dichloroethene 70 UG_L 0.21 1 0.5 Y IR88-MW02 3839088.149 284803.493 8/18/2022 GW Ethane 0.27 MG_L 0.055 0.25 0.12 Y IR88-MW02 3839088.149 284803.493 8/18/2022 GW Ethene 0.32 MG_L 0.049 0.25 0.12 Y IR88-MW02 3839088.149 284803.493 8/18/2022 GW Methane 11 MG_L 0.048 0.25 0.12 Y IR88-MW02 3839088.149 284803.493 8/18/2022 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW02 3839088.149 284803.493 8/18/2022 GW Nitrate 0.038 J MG_L 0.017 0.05 0.025 Y IR88-MW02 3839088.149 284803.493 8/18/2022 GW Nitrite 0.12 MG_L 0.0092 0.05 0.025 Y IR88-MW02 3839088.149 284803.493 8/18/2022 GW Tetrachloroethene 44 UG_L 0.4 1 0.5 Y IR88-MW02 3839088.149 284803.493 8/18/2022 GW Total organic carbon (TOC) 4.2 MG_L 0.37 1 0.75 Y IR88-MW02 3839088.149 284803.493 8/18/2022 GW Trichloroethene 6.5 UG_L 0.28 1 0.5 Y IR88-MW02 3839088.149 284803.493 8/18/2022 GW Vinyl chloride 77 UG_L 0.25 2 1 Y IR88-MW02 3839088.149 284803.493 8/18/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW02 3839088.149 284803.493 1/31/2019 GW Benzene 5.53 J UG_L 0.4 2 1 Y IR88-MW02 3839088.149 284803.493 1/31/2019 GW cis-1,2-Dichloroethene 155 J UG_L 0.4 2 1 Y IR88-MW02 3839088.149 284803.493 1/31/2019 GW Naphthalene 1 U UG_L 0.4 10 1 N IR88-MW02 3839088.149 284803.493 1/31/2019 GW Tetrachloroethene 62 J UG_L 0.4 2 1 Y IR88-MW02 3839088.149 284803.493 1/31/2019 GW Trichloroethene 4.91 J UG_L 0.4 2 1 Y IR88-MW02 3839088.149 284803.493 1/31/2019 GW Vinyl chloride 103 J UG_L 0.4 2 1 Y IR88-MW02 3839088.149 284803.493 5/15/1997 GW Benzene 10 U UG_L 10 N IR88-MW02 3839088.149 284803.493 5/15/1997 GW Tetrachloroethene 9100 UG_L 500 Y IR88-MW02 3839088.149 284803.493 5/15/1997 GW Trichloroethene 96 J UG_L 10 Y IR88-MW02 3839088.149 284803.493 5/15/1997 GW Vinyl chloride 10 U UG_L 10 N IR88-MW02IW 3839087.088 284800.971 1/18/2000 GW Benzene 5 U UG_L 5 N IR88-MW02IW 3839087.088 284800.971 1/18/2000 GW cis-1,2-Dichloroethene 81 J UG_L 5 Y IR88-MW02IW 3839087.088 284800.971 1/18/2000 GW Ethane 9.6 U UG_L 9.6 N IR88-MW02IW 3839087.088 284800.971 1/18/2000 GW Ethene 9 U UG_L 9 N IR88-MW02IW 3839087.088 284800.971 1/18/2000 GW Methane 820 UG_L 5.2 Y IR88-MW02IW 3839087.088 284800.971 1/18/2000 GW Nitrate 50 U UG_L 50 N IR88-MW02IW 3839087.088 284800.971 1/18/2000 GW Tetrachloroethene 7500 UG_L 500 Y IR88-MW02IW 3839087.088 284800.971 1/18/2000 GW Trichloroethene 270 J UG_L 5 Y IR88-MW02IW 3839087.088 284800.971 1/18/2000 GW Vinyl chloride 2 U UG_L 2 N IR88-MW02IW 3839087.088 284800.971 7/18/2000 GW Benzene 5 U UG_L 5 N IR88-MW02IW 3839087.088 284800.971 7/18/2000 GW Chloride 6000 UG_L 4000 Y IR88-MW02IW 3839087.088 284800.971 7/18/2000 GW cis-1,2-Dichloroethene 78 UG_L 5 Y IR88-MW02IW 3839087.088 284800.971 7/18/2000 GW Nitrate 60 UG_L 50 Y IR88-MW02IW 3839087.088 284800.971 7/18/2000 GW Tetrachloroethene 13000 E UG_L 5 Y IR88-MW02IW 3839087.088 284800.971 7/18/2000 GW Vinyl chloride 2 U UG_L 2 N IR88-MW02IW 3839087.088 284800.971 1/18/2000 GW Benzene 5 U UG_L 5 N IR88-MW02IW 3839087.088 284800.971 1/18/2000 GW cis-1,2-Dichloroethene 81 J UG_L 5 Y IR88-MW02IW 3839087.088 284800.971 1/18/2000 GW Ethane 9.6 U UG_L 9.6 N IR88-MW02IW 3839087.088 284800.971 1/18/2000 GW Ethene 9 U UG_L 9 N IR88-MW02IW 3839087.088 284800.971 1/18/2000 GW Methane 820 UG_L 5.2 Y IR88-MW02IW 3839087.088 284800.971 1/18/2000 GW Nitrate 50 U UG_L 50 N IR88-MW02IW 3839087.088 284800.971 1/18/2000 GW Tetrachloroethene 7500 UG_L 500 Y IR88-MW02IW 3839087.088 284800.971 1/18/2000 GW Trichloroethene 270 J UG_L 5 Y IR88-MW02IW 3839087.088 284800.971 1/18/2000 GW Vinyl chloride 2 U UG_L 2 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW02IW 3839087.088 284800.971 1/16/2001 GW Benzene 5 U UG_L 5 N IR88-MW02IW 3839087.088 284800.971 1/16/2001 GW cis-1,2-Dichloroethene 60 UG_L 5 Y IR88-MW02IW 3839087.088 284800.971 1/16/2001 GW Tetrachloroethene 9400 UG_L 500 Y IR88-MW02IW 3839087.088 284800.971 1/16/2001 GW Trichloroethene 500 U UG_L 500 N IR88-MW02IW 3839087.088 284800.971 1/16/2001 GW Vinyl chloride 2 U UG_L 2 N IR88-MW02IW 3839087.088 284800.971 7/14/2001 GW Benzene 5 U UG_L 5 N IR88-MW02IW 3839087.088 284800.971 7/14/2001 GW cis-1,2-Dichloroethene 92 UG_L 5 Y IR88-MW02IW 3839087.088 284800.971 7/14/2001 GW Tetrachloroethene 11000 UG_L 5 Y IR88-MW02IW 3839087.088 284800.971 7/14/2001 GW Trichloroethene 700 UG_L 5 Y IR88-MW02IW 3839087.088 284800.971 7/14/2001 GW Vinyl chloride 2 U UG_L 2 N IR88-MW02IW 3839087.088 284800.971 7/26/2002 GW Benzene 10 U UG_L 10 N IR88-MW02IW 3839087.088 284800.971 7/26/2002 GW Chloride 6060 UG_L 2000 Y IR88-MW02IW 3839087.088 284800.971 7/26/2002 GW cis-1,2-Dichloroethene 60 UG_L 10 Y IR88-MW02IW 3839087.088 284800.971 7/26/2002 GW Ethane 8 U UG_L 8 N IR88-MW02IW 3839087.088 284800.971 7/26/2002 GW Ethene 0.2 J UG_L 8 Y IR88-MW02IW 3839087.088 284800.971 7/26/2002 GW Ferrous iron 440 UG_L 100 Y IR88-MW02IW 3839087.088 284800.971 7/26/2002 GW Methane 55 UG_L 5 Y IR88-MW02IW 3839087.088 284800.971 7/26/2002 GW Nitrate 50 U UG_L 50 N IR88-MW02IW 3839087.088 284800.971 7/26/2002 GW Tetrachloroethene 2700 D UG_L 200 Y IR88-MW02IW 3839087.088 284800.971 7/26/2002 GW Total organic carbon (TOC) 5610 UG_L 5000 Y IR88-MW02IW 3839087.088 284800.971 7/26/2002 GW Trichloroethene 410 D UG_L 200 Y IR88-MW02IW 3839087.088 284800.971 7/26/2002 GW Vinyl chloride 10 U UG_L 10 N IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Benzene 1 U UG_L 1 N IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Chloride 8200 UG_L 0 Y IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW cis-1,2-Dichloroethene 38 UG_L 1 Y IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Ethane 10 U UG_L 10 N IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Ethene 10 U UG_L 10 N IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Methane 460 UG_L 10 Y IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Nitrate 50 U UG_L 0 N IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Nitrite 57 UG_L 50 Y IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Tetrachloroethene 2600 UG_L 50 Y IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Total organic carbon (TOC) 3400 UG_L 0 Y IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Trichloroethene 230 UG_L 50 Y IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Vinyl chloride 2 U UG_L 2 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW02IW 3839087.088 284800.971 10/28/2004 GW Alkalinity 110000 UG_L 5000 Y IR88-MW02IW 3839087.088 284800.971 10/28/2004 GW Benzene 10 U UG_L 10 N IR88-MW02IW 3839087.088 284800.971 10/28/2004 GW Chloride 6800 UG_L 2000 Y IR88-MW02IW 3839087.088 284800.971 10/28/2004 GW cis-1,2-Dichloroethene 37 UG_L 10 Y IR88-MW02IW 3839087.088 284800.971 10/28/2004 GW Ethane 10 U UG_L 10 N IR88-MW02IW 3839087.088 284800.971 10/28/2004 GW Ethene 10 U UG_L 10 N IR88-MW02IW 3839087.088 284800.971 10/28/2004 GW Methane 600 UG_L 10 Y IR88-MW02IW 3839087.088 284800.971 10/28/2004 GW Nitrate 120 UG_L 50 Y IR88-MW02IW 3839087.088 284800.971 10/28/2004 GW Nitrite 47 J UG_L 50 Y IR88-MW02IW 3839087.088 284800.971 10/28/2004 GW Tetrachloroethene 3700 UG_L 500 Y IR88-MW02IW 3839087.088 284800.971 10/28/2004 GW Trichloroethene 330 J UG_L 500 Y IR88-MW02IW 3839087.088 284800.971 10/28/2004 GW Vinyl chloride 10 U UG_L 10 N IR88-MW02IW 3839087.088 284800.971 10/28/2004 GW Sulfide 1400 J- UG_L 1000 Y IR88-MW02IW 3839087.088 284800.971 11/19/2005 GW Alkalinity 104000 UG_L 10000 Y IR88-MW02IW 3839087.088 284800.971 11/19/2005 GW Benzene 0.5 U UG_L 0.5 N IR88-MW02IW 3839087.088 284800.971 11/19/2005 GW Chloride 7680 UG_L 2000 Y IR88-MW02IW 3839087.088 284800.971 11/19/2005 GW cis-1,2-Dichloroethene 48 J UG_L 0.5 Y IR88-MW02IW 3839087.088 284800.971 11/19/2005 GW Ethane 1 J UG_L 2 Y IR88-MW02IW 3839087.088 284800.971 11/19/2005 GW Ethene 6 UG_L 2 Y IR88-MW02IW 3839087.088 284800.971 11/19/2005 GW Ferric iron 2690 UG_L 400 Y IR88-MW02IW 3839087.088 284800.971 11/19/2005 GW Methane 3 UG_L 1 Y IR88-MW02IW 3839087.088 284800.971 11/19/2005 GW Nitrate 50 U UG_L 50 N IR88-MW02IW 3839087.088 284800.971 11/19/2005 GW Nitrite 50 U UG_L 50 N IR88-MW02IW 3839087.088 284800.971 11/19/2005 GW Tetrachloroethene 10000 UG_L 630 Y IR88-MW02IW 3839087.088 284800.971 11/19/2005 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW02IW 3839087.088 284800.971 11/19/2005 GW Trichloroethene 240 J UG_L 630 Y IR88-MW02IW 3839087.088 284800.971 11/19/2005 GW Vinyl chloride 0.5 U UG_L 0.5 N IR88-MW02IW 3839087.088 284800.971 11/19/2005 GW Sulfide 1000 U UG_L 1000 N IR88-MW02IW 3839087.088 284800.971 8/10/2007 GW Alkalinity 147000 UG_L 10000 Y IR88-MW02IW 3839087.088 284800.971 8/10/2007 GW Benzene 250 U UG_L 250 N IR88-MW02IW 3839087.088 284800.971 8/10/2007 GW Chloride 8610 U UG_L 2000 N IR88-MW02IW 3839087.088 284800.971 8/10/2007 GW cis-1,2-Dichloroethene 250 U UG_L 250 N IR88-MW02IW 3839087.088 284800.971 8/10/2007 GW Ethane 2 U UG_L 2 N IR88-MW02IW 3839087.088 284800.971 8/10/2007 GW Ethene 2 U UG_L 2 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW02IW 3839087.088 284800.971 8/10/2007 GW Ferric iron 400 U UG_L 400 N IR88-MW02IW 3839087.088 284800.971 8/10/2007 GW Ferrous iron 330 J UG_L 400 Y IR88-MW02IW 3839087.088 284800.971 8/10/2007 GW Methane 1 U UG_L 1 N IR88-MW02IW 3839087.088 284800.971 8/10/2007 GW Nitrate 155 UG_L 50 Y IR88-MW02IW 3839087.088 284800.971 8/10/2007 GW Nitrite 50 U UG_L 50 N IR88-MW02IW 3839087.088 284800.971 8/10/2007 GW Tetrachloroethene 8400 UG_L 250 Y IR88-MW02IW 3839087.088 284800.971 8/10/2007 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW02IW 3839087.088 284800.971 8/10/2007 GW Trichloroethene 180 J UG_L 250 Y IR88-MW02IW 3839087.088 284800.971 8/10/2007 GW Vinyl chloride 250 U UG_L 250 N IR88-MW02IW 3839087.088 284800.971 8/10/2007 GW Sulfide 1000 U UG_L 1000 N IR88-MW02IW 3839087.088 284800.971 10/16/2011 GW Benzene 5 U UG_L 2.5 10 5 N IR88-MW02IW 3839087.088 284800.971 10/16/2011 GW cis-1,2-Dichloroethene 603 UG_L 2.5 10 5 Y IR88-MW02IW 3839087.088 284800.971 10/16/2011 GW Tetrachloroethene 131 UG_L 2.5 10 5 Y IR88-MW02IW 3839087.088 284800.971 10/16/2011 GW Trichloroethene 54.7 UG_L 2.5 10 5 Y IR88-MW02IW 3839087.088 284800.971 10/16/2011 GW Vinyl chloride 5 U UG_L 2.5 10 5 N IR88-MW02IW 3839087.088 284800.971 10/23/2014 GW Benzene 2.5 U UG_L 1.25 5 2.5 N IR88-MW02IW 3839087.088 284800.971 10/23/2014 GW cis-1,2-Dichloroethene 20.1 UG_L 1.25 5 2.5 Y IR88-MW02IW 3839087.088 284800.971 10/23/2014 GW Naphthalene 2.5 U UG_L 1.25 5 2.5 N IR88-MW02IW 3839087.088 284800.971 10/23/2014 GW Tetrachloroethene 558 UG_L 1.25 5 2.5 Y IR88-MW02IW 3839087.088 284800.971 10/23/2014 GW Trichloroethene 69.8 UG_L 1.25 5 2.5 Y IR88-MW02IW 3839087.088 284800.971 10/23/2014 GW Vinyl chloride 2.5 U UG_L 1.25 5 2.5 N IR88-MW02IW 3839087.088 284800.971 1/31/2019 GW Alkalinity 226 MG_L 0.26 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 1/31/2019 GW Benzene 0.5 U UG_L 0.2 1 0.5 N IR88-MW02IW 3839087.088 284800.971 1/31/2019 GW Chloride 14.2 MG_L 0.1 0.4 0.2 Y IR88-MW02IW 3839087.088 284800.971 1/31/2019 GW cis-1,2-Dichloroethene 122 J UG_L 0.2 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 1/31/2019 GW Ethane 0.00022 U MG_L 0.00011 0.001 0.00022 N IR88-MW02IW 3839087.088 284800.971 1/31/2019 GW Ethene 0.000976 J MG_L 0.00015 0.001 0.00029 Y IR88-MW02IW 3839087.088 284800.971 1/31/2019 GW Methane 0.00909 MG_L 0.000435 0.002 0.00109 Y IR88-MW02IW 3839087.088 284800.971 1/31/2019 GW Naphthalene 0.5 U UG_L 0.2 5 0.5 N IR88-MW02IW 3839087.088 284800.971 1/31/2019 GW Nitrate 0.15 U MG_L 0.1 0.2 0.15 N IR88-MW02IW 3839087.088 284800.971 1/31/2019 GW Nitrite 0.15 U MG_L 0.1 0.2 0.15 N IR88-MW02IW 3839087.088 284800.971 1/31/2019 GW Tetrachloroethene 247 J UG_L 0.2 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 1/31/2019 GW Total organic carbon (TOC) 5.94 MG_L 0.3 2 1 Y IR88-MW02IW 3839087.088 284800.971 1/31/2019 GW Trichloroethene 51.6 J UG_L 0.2 1 0.5 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW02IW 3839087.088 284800.971 1/31/2019 GW Vinyl chloride 11.4 J UG_L 0.2 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 1/31/2019 GW Sulfide 1.5 U MG_L 1.08 2 1.5 N IR88-MW02IW 3839087.088 284800.971 2/1/2019 GW BAV1 R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW02IW 3839087.088 284800.971 2/1/2019 GW Dehalococcoides 5.7 CELLS_ML 0.1 0.5 Y IR88-MW02IW 3839087.088 284800.971 2/1/2019 GW TCE R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW02IW 3839087.088 284800.971 2/1/2019 GW VC R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW Alkalinity 150 MG_L 0.23 5 4 Y IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW BAV1 R-Dase 726 CELLS_ML 0.059 0.3 Y IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW Chloride 13 MG_L 0.0993 2 1 Y IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW cis-1,2-Dichloroethene 450 UG_L 2.1 10 5 Y IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW Dehalococcoides 4620 CELLS_ML 0.059 0.3 Y IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW Ethene 0.021 MG_L 0.002 0.01 0.005 Y IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW Methane 0.23 MG_L 0.0019 0.01 0.005 Y IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW TCE R-Dase 0.3 J CELLS_ML 0.059 0.3 Y IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW Tetrachloroethene 110 J UG_L 0.4 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW Total organic carbon (TOC) 2 MG_L 0.1 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW Trichloroethene 48 J UG_L 0.28 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW VC R-Dase 0.067 J CELLS_ML 0.059 0.3 Y IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW Vinyl chloride 110 J UG_L 0.25 2 1 Y IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW cis-1,2-Dichloroethene 460 J UG_L 2.1 10 5 Y IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW Tetrachloroethene 110 J UG_L 0.4 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW Trichloroethene 44 J UG_L 0.28 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW Vinyl chloride 91 J UG_L 0.25 2 1 Y IR88-MW02IW 3839087.088 284800.971 12/11/2019 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW02IW 3839087.088 284800.971 4/14/2020 GW Alkalinity 160 MG_L 0.23 5 4 Y IR88-MW02IW 3839087.088 284800.971 4/14/2020 GW BAV1 R-Dase 329 CELLS_ML 0.05 0.3 Y IR88-MW02IW 3839087.088 284800.971 4/14/2020 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW02IW 3839087.088 284800.971 4/14/2020 GW Chloride 13 MG_L 0.0993 2 1 Y IR88-MW02IW 3839087.088 284800.971 4/14/2020 GW cis-1,2-Dichloroethene 320 UG_L 2.1 10 5 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW02IW 3839087.088 284800.971 4/14/2020 GW Dehalococcoides 2960 CELLS_ML 0.05 0.3 Y IR88-MW02IW 3839087.088 284800.971 4/14/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW02IW 3839087.088 284800.971 4/14/2020 GW Ethene 0.011 MG_L 0.002 0.01 0.005 Y IR88-MW02IW 3839087.088 284800.971 4/14/2020 GW Methane 0.2 MG_L 0.0019 0.01 0.005 Y IR88-MW02IW 3839087.088 284800.971 4/14/2020 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW02IW 3839087.088 284800.971 4/14/2020 GW TCE R-Dase 2.2 CELLS_ML 0.05 0.3 Y IR88-MW02IW 3839087.088 284800.971 4/14/2020 GW Tetrachloroethene 67 UG_L 0.4 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 4/14/2020 GW Total organic carbon (TOC) 1.2 MG_L 0.1 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 4/14/2020 GW Trichloroethene 49 UG_L 0.28 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 4/14/2020 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW02IW 3839087.088 284800.971 4/14/2020 GW Vinyl chloride 71 UG_L 0.25 2 1 Y IR88-MW02IW 3839087.088 284800.971 4/14/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW02IW 3839087.088 284800.971 11/9/2020 GW Alkalinity 37 MG_L 0.23 5 4 Y IR88-MW02IW 3839087.088 284800.971 11/9/2020 GW BAV1 R-Dase 3.3 CELLS_ML 0.077 0.4 Y IR88-MW02IW 3839087.088 284800.971 11/9/2020 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW02IW 3839087.088 284800.971 11/9/2020 GW Chloride 4 MG_L 0.0993 2 1 Y IR88-MW02IW 3839087.088 284800.971 11/9/2020 GW cis-1,2-Dichloroethene 36 UG_L 0.21 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 11/9/2020 GW Dehalococcoides 35.3 CELLS_ML 0.077 0.4 Y IR88-MW02IW 3839087.088 284800.971 11/9/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW02IW 3839087.088 284800.971 11/9/2020 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW02IW 3839087.088 284800.971 11/9/2020 GW Methane 0.0047 J MG_L 0.0019 0.01 0.005 Y IR88-MW02IW 3839087.088 284800.971 11/9/2020 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW02IW 3839087.088 284800.971 11/9/2020 GW TCE R-Dase 0.3 J CELLS_ML 0.077 0.4 Y IR88-MW02IW 3839087.088 284800.971 11/9/2020 GW Tetrachloroethene 79 UG_L 0.4 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 11/9/2020 GW Total organic carbon (TOC) 3.2 MG_L 0.1 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 11/9/2020 GW Trichloroethene 17 UG_L 0.28 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 11/9/2020 GW VC R-Dase 0.4 U CELLS_ML 0.077 0.4 N IR88-MW02IW 3839087.088 284800.971 11/9/2020 GW Vinyl chloride 0.38 J UG_L 0.017 0.1 0.05 Y IR88-MW02IW 3839087.088 284800.971 11/9/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW Alkalinity 160 MG_L 0.23 5 4 Y IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW BAV1 R-Dase 84.1 CELLS_ML 0.05 0.3 Y IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW Chloride 10 MG_L 0.099 2 1 Y IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW cis-1,2-Dichloroethene 220 J UG_L 0.42 2 1 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW Dehalococcoides 2560 CELLS_ML 0.05 0.3 Y IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW Ethene 0.0042 J MG_L 0.002 0.01 0.005 Y IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW Methane 3.1 L MG_L 0.019 0.1 0.05 Y IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW Nitrate 0.1 MG_L 0.017 0.05 0.025 Y IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW Nitrite 0.29 MG_L 0.0092 0.05 0.025 Y IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW TCE R-Dase 0.8 CELLS_ML 0.05 0.3 Y IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW Tetrachloroethene 54 UG_L 0.4 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW Total organic carbon (TOC) 1.2 MG_L 0.1 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW Trichloroethene 37 UG_L 0.28 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW Vinyl chloride 58 UG_L 0.25 2 1 Y IR88-MW02IW 3839087.088 284800.971 9/14/2021 GW Sulfide 1.3 MG_L 0.69 1 0.8 Y IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW Alkalinity 250 MG_L 0.23 5 4 Y IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW BAV1 R-Dase 2490 CELLS_ML 0.083 0.4 Y IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW Chloride 9.4 MG_L 0.099 2 1 Y IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW cis-1,2-Dichloroethene 69 UG_L 0.21 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW Dehalococcoides 29200 CELLS_ML 0.083 0.4 Y IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW Ethene 0.043 MG_L 0.002 0.01 0.005 Y IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW Methane 21 MG_L 0.048 0.25 0.12 Y IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW Nitrate 0.04 J MG_L 0.017 0.05 0.025 Y IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW Nitrite 0.31 MG_L 0.0092 0.05 0.025 Y IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW TCE R-Dase 649 CELLS_ML 0.083 0.4 Y IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW Total organic carbon (TOC) 9.9 MG_L 0.1 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW VC R-Dase 654 CELLS_ML 0.083 0.4 Y IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW Vinyl chloride 50 UG_L 0.25 2 1 Y IR88-MW02IW 3839087.088 284800.971 3/2/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW02IW 3839087.088 284800.971 8/18/2022 GW Alkalinity 310 MG_L 0.23 5 4 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW02IW 3839087.088 284800.971 8/18/2022 GW Benzene 0.3 J UG_L 0.26 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 8/18/2022 GW Chloride 9.4 MG_L 0.099 2 1 Y IR88-MW02IW 3839087.088 284800.971 8/18/2022 GW cis-1,2-Dichloroethene 95 J UG_L 0.21 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 8/18/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW02IW 3839087.088 284800.971 8/18/2022 GW Ethene 0.019 MG_L 0.002 0.01 0.005 Y IR88-MW02IW 3839087.088 284800.971 8/18/2022 GW Methane 20 MG_L 0.048 0.25 0.12 Y IR88-MW02IW 3839087.088 284800.971 8/18/2022 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW02IW 3839087.088 284800.971 8/18/2022 GW Nitrate 0.038 J MG_L 0.017 0.05 0.025 Y IR88-MW02IW 3839087.088 284800.971 8/18/2022 GW Nitrite 0.28 MG_L 0.0092 0.05 0.025 Y IR88-MW02IW 3839087.088 284800.971 8/18/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW02IW 3839087.088 284800.971 8/18/2022 GW Total organic carbon (TOC) 4.7 MG_L 0.37 1 0.75 Y IR88-MW02IW 3839087.088 284800.971 8/18/2022 GW Trichloroethene 0.7 J UG_L 0.28 1 0.5 Y IR88-MW02IW 3839087.088 284800.971 8/18/2022 GW Vinyl chloride 46 J UG_L 0.25 2 1 Y IR88-MW02IW 3839087.088 284800.971 8/18/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Benzene 1 U UG_L 1 N IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Chloride 8400 UG_L 0 Y IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW cis-1,2-Dichloroethene 39 UG_L 1 Y IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Ethane 10 U UG_L 10 N IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Ethene 10 U UG_L 10 N IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Methane 470 UG_L 10 Y IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Nitrate 50 U UG_L 0 N IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Nitrite 52 UG_L 50 Y IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Tetrachloroethene 2000 UG_L 50 Y IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Total organic carbon (TOC) 3600 UG_L 0 Y IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Trichloroethene 210 UG_L 50 Y IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Vinyl chloride 2 U UG_L 2 N IR88-MW02IW 3839087.088 284800.971 10/6/2003 GW Sulfide 1000 U UG_L 0 N IR88-MW02IW 3839087.088 284800.971 5/15/1997 GW Benzene 10 U UG_L 10 N IR88-MW02IW 3839087.088 284800.971 5/15/1997 GW Tetrachloroethene 3400 UG_L 200 Y IR88-MW02IW 3839087.088 284800.971 5/15/1997 GW Trichloroethene 120 J UG_L 10 Y IR88-MW02IW 3839087.088 284800.971 5/15/1997 GW Vinyl chloride 10 U UG_L 10 N IR88-MW05 3839163.592 284783.808 1/18/2000 GW Benzene 5 U UG_L 5 N IR88-MW05 3839163.592 284783.808 1/18/2000 GW cis-1,2-Dichloroethene 23 J UG_L 5 Y IR88-MW05 3839163.592 284783.808 1/18/2000 GW Ethane 9.6 U UG_L 9.6 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW05 3839163.592 284783.808 1/18/2000 GW Ethene 9 U UG_L 9 N IR88-MW05 3839163.592 284783.808 1/18/2000 GW Methane 5.2 U UG_L 5.2 N IR88-MW05 3839163.592 284783.808 1/18/2000 GW Tetrachloroethene 5700 UG_L 250 Y IR88-MW05 3839163.592 284783.808 1/18/2000 GW Trichloroethene 38 J UG_L 5 Y IR88-MW05 3839163.592 284783.808 1/18/2000 GW Vinyl chloride 2 U UG_L 2 N IR88-MW05 3839163.592 284783.808 1/21/2000 GW Nitrate 1500 UG_L 100 Y IR88-MW05 3839163.592 284783.808 7/18/2000 GW Benzene 5 U UG_L 5 N IR88-MW05 3839163.592 284783.808 7/18/2000 GW Chloride 10000 UG_L 4000 Y IR88-MW05 3839163.592 284783.808 7/18/2000 GW cis-1,2-Dichloroethene 18 UG_L 5 Y IR88-MW05 3839163.592 284783.808 7/18/2000 GW Nitrate 200 UG_L 50 Y IR88-MW05 3839163.592 284783.808 7/18/2000 GW Tetrachloroethene 8600 E UG_L 5 Y IR88-MW05 3839163.592 284783.808 7/18/2000 GW Trichloroethene 35 E UG_L 5 Y IR88-MW05 3839163.592 284783.808 7/18/2000 GW Vinyl chloride 2 U UG_L 2 N IR88-MW05 3839163.592 284783.808 1/18/2000 GW Benzene 5 U UG_L 5 N IR88-MW05 3839163.592 284783.808 1/18/2000 GW cis-1,2-Dichloroethene 23 J UG_L 5 Y IR88-MW05 3839163.592 284783.808 1/18/2000 GW Ethane 9.6 U UG_L 9.6 N IR88-MW05 3839163.592 284783.808 1/18/2000 GW Ethene 9 U UG_L 9 N IR88-MW05 3839163.592 284783.808 1/18/2000 GW Methane 5.2 U UG_L 5.2 N IR88-MW05 3839163.592 284783.808 1/18/2000 GW Nitrate 1500 UG_L 100 Y IR88-MW05 3839163.592 284783.808 1/18/2000 GW Tetrachloroethene 5700 UG_L 250 Y IR88-MW05 3839163.592 284783.808 1/18/2000 GW Trichloroethene 38 J UG_L 5 Y IR88-MW05 3839163.592 284783.808 1/18/2000 GW Vinyl chloride 2 U UG_L 2 N IR88-MW05 3839163.592 284783.808 1/16/2001 GW Benzene 5 U UG_L 5 N IR88-MW05 3839163.592 284783.808 1/16/2001 GW cis-1,2-Dichloroethene 11 UG_L 5 Y IR88-MW05 3839163.592 284783.808 1/16/2001 GW Tetrachloroethene 5200 UG_L 500 Y IR88-MW05 3839163.592 284783.808 1/16/2001 GW Trichloroethene 19 UG_L 5 Y IR88-MW05 3839163.592 284783.808 1/16/2001 GW Vinyl chloride 2 U UG_L 2 N IR88-MW05 3839163.592 284783.808 7/25/2002 GW Benzene 57 UG_L 10 Y IR88-MW05 3839163.592 284783.808 7/25/2002 GW Chloride 6260 UG_L 2000 Y IR88-MW05 3839163.592 284783.808 7/25/2002 GW cis-1,2-Dichloroethene 40 UG_L 10 Y IR88-MW05 3839163.592 284783.808 7/25/2002 GW Ethane 2 U UG_L 2 N IR88-MW05 3839163.592 284783.808 7/25/2002 GW Ethene 2 U UG_L 2 N IR88-MW05 3839163.592 284783.808 7/25/2002 GW Ferrous iron 100 U UG_L 100 N IR88-MW05 3839163.592 284783.808 7/25/2002 GW Methane 0.6 U UG_L 1 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW05 3839163.592 284783.808 7/25/2002 GW Nitrate 70 UG_L 50 Y IR88-MW05 3839163.592 284783.808 7/25/2002 GW Tetrachloroethene 2300 UG_L 130 Y IR88-MW05 3839163.592 284783.808 7/25/2002 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW05 3839163.592 284783.808 7/25/2002 GW Trichloroethene 95 UG_L 10 Y IR88-MW05 3839163.592 284783.808 7/25/2002 GW Vinyl chloride 10 U UG_L 10 N IR88-MW05 3839163.592 284783.808 10/7/2003 GW Benzene 1 U UG_L 1 N IR88-MW05 3839163.592 284783.808 10/7/2003 GW Chloride 6000 UG_L 0 Y IR88-MW05 3839163.592 284783.808 10/7/2003 GW cis-1,2-Dichloroethene 28 UG_L 1 Y IR88-MW05 3839163.592 284783.808 10/7/2003 GW Ethane 10 U UG_L 10 N IR88-MW05 3839163.592 284783.808 10/7/2003 GW Ethene 10 U UG_L 10 N IR88-MW05 3839163.592 284783.808 10/7/2003 GW Methane 10 U UG_L 10 N IR88-MW05 3839163.592 284783.808 10/7/2003 GW Nitrate 800 UG_L 0 Y IR88-MW05 3839163.592 284783.808 10/7/2003 GW Nitrite 50 U UG_L 50 N IR88-MW05 3839163.592 284783.808 10/7/2003 GW Tetrachloroethene 800 UG_L 20 Y IR88-MW05 3839163.592 284783.808 10/7/2003 GW Total organic carbon (TOC) 1000 U UG_L 0 N IR88-MW05 3839163.592 284783.808 10/7/2003 GW Trichloroethene 29 UG_L 1 Y IR88-MW05 3839163.592 284783.808 10/7/2003 GW Vinyl chloride 2 U UG_L 2 N IR88-MW05 3839163.592 284783.808 10/7/2003 GW Sulfide 1000 U UG_L 0 N IR88-MW05 3839163.592 284783.808 10/29/2004 GW Alkalinity 50000 UG_L 5000 Y IR88-MW05 3839163.592 284783.808 10/29/2004 GW Benzene 10 U UG_L 10 N IR88-MW05 3839163.592 284783.808 10/29/2004 GW Chloride 3900 UG_L 2000 Y IR88-MW05 3839163.592 284783.808 10/29/2004 GW cis-1,2-Dichloroethene 24 UG_L 10 Y IR88-MW05 3839163.592 284783.808 10/29/2004 GW Ethane 10 U UG_L 10 N IR88-MW05 3839163.592 284783.808 10/29/2004 GW Ethene 10 U UG_L 10 N IR88-MW05 3839163.592 284783.808 10/29/2004 GW Methane 10 U UG_L 10 N IR88-MW05 3839163.592 284783.808 10/29/2004 GW Nitrate 980 UG_L 50 Y IR88-MW05 3839163.592 284783.808 10/29/2004 GW Nitrite 50 U UG_L 50 N IR88-MW05 3839163.592 284783.808 10/29/2004 GW Tetrachloroethene 1600 UG_L 200 Y IR88-MW05 3839163.592 284783.808 10/29/2004 GW Trichloroethene 34 UG_L 10 Y IR88-MW05 3839163.592 284783.808 10/29/2004 GW Vinyl chloride 10 U UG_L 10 N IR88-MW05 3839163.592 284783.808 10/29/2004 GW Sulfide 2700 UG_L 1000 Y IR88-MW05 3839163.592 284783.808 11/20/2005 GW Alkalinity 74600 UG_L 10000 Y IR88-MW05 3839163.592 284783.808 11/20/2005 GW Benzene 42 U UG_L 42 N IR88-MW05 3839163.592 284783.808 11/20/2005 GW Chloride 4000 UG_L 2000 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW05 3839163.592 284783.808 11/20/2005 GW cis-1,2-Dichloroethene 9.2 J UG_L 42 Y IR88-MW05 3839163.592 284783.808 11/20/2005 GW Ethane 2 U UG_L 2 N IR88-MW05 3839163.592 284783.808 11/20/2005 GW Ethene 2 U UG_L 2 N IR88-MW05 3839163.592 284783.808 11/20/2005 GW Ferric iron 400 U UG_L 400 N IR88-MW05 3839163.592 284783.808 11/20/2005 GW Methane 1 U UG_L 1 N IR88-MW05 3839163.592 284783.808 11/20/2005 GW Nitrate 815 UG_L 50 Y IR88-MW05 3839163.592 284783.808 11/20/2005 GW Nitrite 50 U UG_L 50 N IR88-MW05 3839163.592 284783.808 11/20/2005 GW Tetrachloroethene 1300 UG_L 42 Y IR88-MW05 3839163.592 284783.808 11/20/2005 GW Total organic carbon (TOC) 3670 J UG_L 5000 Y IR88-MW05 3839163.592 284783.808 11/20/2005 GW Trichloroethene 22 J UG_L 42 Y IR88-MW05 3839163.592 284783.808 11/20/2005 GW Vinyl chloride 42 U UG_L 42 N IR88-MW05 3839163.592 284783.808 11/20/2005 GW Sulfide 1000 U UG_L 1000 N IR88-MW05 3839163.592 284783.808 11/20/2005 GW Sulfide 1000 U UG_L 1000 N IR88-MW05 3839163.592 284783.808 8/9/2007 GW Alkalinity 28900 UG_L 10000 Y IR88-MW05 3839163.592 284783.808 8/9/2007 GW Benzene 42 U UG_L 42 N IR88-MW05 3839163.592 284783.808 8/9/2007 GW Chloride 908 U UG_L 400 N IR88-MW05 3839163.592 284783.808 8/9/2007 GW cis-1,2-Dichloroethene 42 U UG_L 42 N IR88-MW05 3839163.592 284783.808 8/9/2007 GW Ethane 2 U UG_L 2 N IR88-MW05 3839163.592 284783.808 8/9/2007 GW Ethene 2 U UG_L 2 N IR88-MW05 3839163.592 284783.808 8/9/2007 GW Ferric iron 400 U UG_L 400 N IR88-MW05 3839163.592 284783.808 8/9/2007 GW Ferrous iron 400 U UG_L 400 N IR88-MW05 3839163.592 284783.808 8/9/2007 GW Methane 1 U UG_L 1 N IR88-MW05 3839163.592 284783.808 8/9/2007 GW Nitrate 42 UG_L 10 Y IR88-MW05 3839163.592 284783.808 8/9/2007 GW Nitrite 10 U UG_L 10 N IR88-MW05 3839163.592 284783.808 8/9/2007 GW Tetrachloroethene 800 UG_L 42 Y IR88-MW05 3839163.592 284783.808 8/9/2007 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW05 3839163.592 284783.808 8/9/2007 GW Trichloroethene 17 J UG_L 42 Y IR88-MW05 3839163.592 284783.808 8/9/2007 GW Vinyl chloride 42 U UG_L 42 N IR88-MW05 3839163.592 284783.808 10/14/2011 GW Benzene 2.5 U UG_L 1.25 5 2.5 N IR88-MW05 3839163.592 284783.808 10/14/2011 GW cis-1,2-Dichloroethene 3.06 J UG_L 1.25 5 2.5 Y IR88-MW05 3839163.592 284783.808 10/14/2011 GW Tetrachloroethene 345 UG_L 1.25 5 2.5 Y IR88-MW05 3839163.592 284783.808 10/14/2011 GW Trichloroethene 11.4 UG_L 1.25 5 2.5 Y IR88-MW05 3839163.592 284783.808 10/14/2011 GW Vinyl chloride 2.5 U UG_L 1.25 5 2.5 N IR88-MW05 3839163.592 284783.808 10/25/2014 GW Benzene 1 U UG_L 0.5 2 1 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW05 3839163.592 284783.808 10/25/2014 GW cis-1,2-Dichloroethene 6.09 UG_L 0.5 2 1 Y IR88-MW05 3839163.592 284783.808 10/25/2014 GW Naphthalene 1 U UG_L 0.5 2 1 N IR88-MW05 3839163.592 284783.808 10/25/2014 GW Tetrachloroethene 334 UG_L 0.5 2 1 Y IR88-MW05 3839163.592 284783.808 10/25/2014 GW Trichloroethene 15 UG_L 0.5 2 1 Y IR88-MW05 3839163.592 284783.808 10/25/2014 GW Vinyl chloride 1 U UG_L 0.5 2 1 N IR88-MW05 3839163.592 284783.808 11/20/2005 GW Alkalinity 66900 UG_L 10000 Y IR88-MW05 3839163.592 284783.808 11/20/2005 GW Benzene 42 U UG_L 42 N IR88-MW05 3839163.592 284783.808 11/20/2005 GW Chloride 3870 UG_L 2000 Y IR88-MW05 3839163.592 284783.808 11/20/2005 GW cis-1,2-Dichloroethene 9.6 J UG_L 42 Y IR88-MW05 3839163.592 284783.808 11/20/2005 GW Ethane 2 U UG_L 2 N IR88-MW05 3839163.592 284783.808 11/20/2005 GW Ethene 2 U UG_L 2 N IR88-MW05 3839163.592 284783.808 11/20/2005 GW Ferric iron 400 U UG_L 400 N IR88-MW05 3839163.592 284783.808 11/20/2005 GW Methane 1 U UG_L 1 N IR88-MW05 3839163.592 284783.808 11/20/2005 GW Nitrate 805 UG_L 50 Y IR88-MW05 3839163.592 284783.808 11/20/2005 GW Nitrite 50 U UG_L 50 N IR88-MW05 3839163.592 284783.808 11/20/2005 GW Tetrachloroethene 1100 UG_L 42 Y IR88-MW05 3839163.592 284783.808 11/20/2005 GW Total organic carbon (TOC) 2580 J UG_L 5000 Y IR88-MW05 3839163.592 284783.808 11/20/2005 GW Trichloroethene 20 J UG_L 42 Y IR88-MW05 3839163.592 284783.808 11/20/2005 GW Vinyl chloride 42 U UG_L 42 N IR88-MW05 3839163.592 284783.808 5/13/1997 GW Benzene 10 U UG_L 10 N IR88-MW05 3839163.592 284783.808 5/13/1997 GW Tetrachloroethene 3000 UG_L 500 Y IR88-MW05 3839163.592 284783.808 5/13/1997 GW Trichloroethene 42 UG_L 10 Y IR88-MW05 3839163.592 284783.808 5/13/1997 GW Vinyl chloride 10 U UG_L 10 N IR88-MW05IW 3839161.869 284783.157 1/18/2000 GW Benzene 5 U UG_L 5 N IR88-MW05IW 3839161.869 284783.157 1/18/2000 GW cis-1,2-Dichloroethene 1900 UG_L 5 Y IR88-MW05IW 3839161.869 284783.157 1/18/2000 GW Ethane 9.6 U UG_L 9.6 N IR88-MW05IW 3839161.869 284783.157 1/18/2000 GW Ethene 9 U UG_L 9 N IR88-MW05IW 3839161.869 284783.157 1/18/2000 GW Methane 85 UG_L 5.2 Y IR88-MW05IW 3839161.869 284783.157 1/18/2000 GW Tetrachloroethene 3900 UG_L 5 Y IR88-MW05IW 3839161.869 284783.157 1/18/2000 GW Trichloroethene 2600 UG_L 5 Y IR88-MW05IW 3839161.869 284783.157 1/18/2000 GW Vinyl chloride 2 U UG_L 2 N IR88-MW05IW 3839161.869 284783.157 1/21/2000 GW Nitrate 100 U UG_L 100 N IR88-MW05IW 3839161.869 284783.157 7/18/2000 GW Benzene 5 U UG_L 5 N IR88-MW05IW 3839161.869 284783.157 7/18/2000 GW Chloride 10000 UG_L 4000 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW05IW 3839161.869 284783.157 7/18/2000 GW cis-1,2-Dichloroethene 3000 E UG_L 5 Y IR88-MW05IW 3839161.869 284783.157 7/18/2000 GW Nitrate 70 UG_L 50 Y IR88-MW05IW 3839161.869 284783.157 7/18/2000 GW Tetrachloroethene 6400 E UG_L 5 Y IR88-MW05IW 3839161.869 284783.157 7/18/2000 GW Trichloroethene 3900 E UG_L 5 Y IR88-MW05IW 3839161.869 284783.157 7/18/2000 GW Vinyl chloride 2 U UG_L 2 N IR88-MW05IW 3839161.869 284783.157 1/18/2000 GW Benzene 5 U UG_L 5 N IR88-MW05IW 3839161.869 284783.157 1/18/2000 GW cis-1,2-Dichloroethene 1900 UG_L 5 Y IR88-MW05IW 3839161.869 284783.157 1/18/2000 GW Ethane 9.6 U UG_L 9.6 N IR88-MW05IW 3839161.869 284783.157 1/18/2000 GW Ethene 9 U UG_L 9 N IR88-MW05IW 3839161.869 284783.157 1/18/2000 GW Methane 85 UG_L 5.2 Y IR88-MW05IW 3839161.869 284783.157 1/18/2000 GW Nitrate 100 U UG_L 100 N IR88-MW05IW 3839161.869 284783.157 1/18/2000 GW Tetrachloroethene 3900 UG_L 5 Y IR88-MW05IW 3839161.869 284783.157 1/18/2000 GW Trichloroethene 2600 UG_L 5 Y IR88-MW05IW 3839161.869 284783.157 1/18/2000 GW Vinyl chloride 2 U UG_L 2 N IR88-MW05IW 3839161.869 284783.157 1/16/2001 GW Benzene 5 U UG_L 5 N IR88-MW05IW 3839161.869 284783.157 1/16/2001 GW cis-1,2-Dichloroethene 4200 UG_L 500 Y IR88-MW05IW 3839161.869 284783.157 1/16/2001 GW Tetrachloroethene 6200 UG_L 500 Y IR88-MW05IW 3839161.869 284783.157 1/16/2001 GW Trichloroethene 4600 UG_L 500 Y IR88-MW05IW 3839161.869 284783.157 1/16/2001 GW Vinyl chloride 1 J UG_L 2 Y IR88-MW05IW 3839161.869 284783.157 7/25/2002 GW Benzene 10 U UG_L 10 N IR88-MW05IW 3839161.869 284783.157 7/25/2002 GW Chloride 12700 UG_L 2000 Y IR88-MW05IW 3839161.869 284783.157 7/25/2002 GW cis-1,2-Dichloroethene 2200 D UG_L 500 Y IR88-MW05IW 3839161.869 284783.157 7/25/2002 GW Ethane 0.04 J UG_L 2 Y IR88-MW05IW 3839161.869 284783.157 7/25/2002 GW Ethene 2 U UG_L 2 N IR88-MW05IW 3839161.869 284783.157 7/25/2002 GW Ferrous iron 100 U UG_L 100 N IR88-MW05IW 3839161.869 284783.157 7/25/2002 GW Methane 12 UG_L 1 Y IR88-MW05IW 3839161.869 284783.157 7/25/2002 GW Nitrate 50 U UG_L 50 N IR88-MW05IW 3839161.869 284783.157 7/25/2002 GW Tetrachloroethene 3400 D UG_L 500 Y IR88-MW05IW 3839161.869 284783.157 7/25/2002 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW05IW 3839161.869 284783.157 7/25/2002 GW Trichloroethene 2300 D UG_L 500 Y IR88-MW05IW 3839161.869 284783.157 7/25/2002 GW Vinyl chloride 1 J UG_L 10 Y IR88-MW05IW 3839161.869 284783.157 10/7/2003 GW Benzene 0.2 J UG_L 1 Y IR88-MW05IW 3839161.869 284783.157 10/7/2003 GW Chloride 14000 UG_L 0 Y IR88-MW05IW 3839161.869 284783.157 10/7/2003 GW cis-1,2-Dichloroethene 1600 UG_L 50 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW05IW 3839161.869 284783.157 10/7/2003 GW Ethane 10 U UG_L 10 N IR88-MW05IW 3839161.869 284783.157 10/7/2003 GW Ethene 10 U UG_L 10 N IR88-MW05IW 3839161.869 284783.157 10/7/2003 GW Methane 110 UG_L 10 Y IR88-MW05IW 3839161.869 284783.157 10/7/2003 GW Nitrate 50 U UG_L 0 N IR88-MW05IW 3839161.869 284783.157 10/7/2003 GW Nitrite 50 U UG_L 50 N IR88-MW05IW 3839161.869 284783.157 10/7/2003 GW Tetrachloroethene 1900 UG_L 50 Y IR88-MW05IW 3839161.869 284783.157 10/7/2003 GW Total organic carbon (TOC) 1100 UG_L 0 Y IR88-MW05IW 3839161.869 284783.157 10/7/2003 GW Trichloroethene 1800 UG_L 50 Y IR88-MW05IW 3839161.869 284783.157 10/7/2003 GW Vinyl chloride 1 J UG_L 2 Y IR88-MW05IW 3839161.869 284783.157 10/29/2005 GW Alkalinity 200000 UG_L 5000 Y IR88-MW05IW 3839161.869 284783.157 10/29/2005 GW Benzene 10 U UG_L 10 N IR88-MW05IW 3839161.869 284783.157 10/29/2005 GW Chloride 13000 UG_L 2000 Y IR88-MW05IW 3839161.869 284783.157 10/29/2005 GW cis-1,2-Dichloroethene 1400 UG_L 500 Y IR88-MW05IW 3839161.869 284783.157 10/29/2005 GW Ethane 10 U UG_L 10 N IR88-MW05IW 3839161.869 284783.157 10/29/2005 GW Ethene 10 U UG_L 10 N IR88-MW05IW 3839161.869 284783.157 10/29/2005 GW Methane 99 UG_L 10 Y IR88-MW05IW 3839161.869 284783.157 10/29/2005 GW Nitrate 50 U UG_L 50 N IR88-MW05IW 3839161.869 284783.157 10/29/2005 GW Nitrite 50 U UG_L 50 N IR88-MW05IW 3839161.869 284783.157 10/29/2005 GW Tetrachloroethene 2700 UG_L 500 Y IR88-MW05IW 3839161.869 284783.157 10/29/2005 GW Trichloroethene 2700 UG_L 500 Y IR88-MW05IW 3839161.869 284783.157 10/29/2005 GW Vinyl chloride 10 U UG_L 10 N IR88-MW05IW 3839161.869 284783.157 10/29/2005 GW Sulfide 1000 U UG_L 1000 N IR88-MW05IW 3839161.869 284783.157 11/19/2005 GW Alkalinity 185000 UG_L 10000 Y IR88-MW05IW 3839161.869 284783.157 11/19/2005 GW Benzene 0.5 U UG_L 0.5 N IR88-MW05IW 3839161.869 284783.157 11/19/2005 GW Chloride 10600 UG_L 2000 Y IR88-MW05IW 3839161.869 284783.157 11/19/2005 GW cis-1,2-Dichloroethene 780 UG_L 360 Y IR88-MW05IW 3839161.869 284783.157 11/19/2005 GW Ethane 2 U UG_L 2 N IR88-MW05IW 3839161.869 284783.157 11/19/2005 GW Ethene 0.04 J UG_L 2 Y IR88-MW05IW 3839161.869 284783.157 11/19/2005 GW Ferric iron 400 U UG_L 400 N IR88-MW05IW 3839161.869 284783.157 11/19/2005 GW Methane 15 UG_L 1 Y IR88-MW05IW 3839161.869 284783.157 11/19/2005 GW Nitrate 50 U UG_L 50 N IR88-MW05IW 3839161.869 284783.157 11/19/2005 GW Nitrite 50 U UG_L 50 N IR88-MW05IW 3839161.869 284783.157 11/19/2005 GW Tetrachloroethene 3300 UG_L 360 Y IR88-MW05IW 3839161.869 284783.157 11/19/2005 GW Total organic carbon (TOC) 5000 U UG_L 5000 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW05IW 3839161.869 284783.157 11/19/2005 GW Trichloroethene 2500 UG_L 360 Y IR88-MW05IW 3839161.869 284783.157 11/19/2005 GW Vinyl chloride 0.14 J UG_L 0.5 Y IR88-MW05IW 3839161.869 284783.157 11/19/2005 GW Sulfide 1000 U UG_L 1000 N IR88-MW05IW 3839161.869 284783.157 8/9/2007 GW Alkalinity 69300 UG_L 10000 Y IR88-MW05IW 3839161.869 284783.157 8/9/2007 GW Benzene 8.3 U UG_L 8.3 N IR88-MW05IW 3839161.869 284783.157 8/9/2007 GW Chloride 9230 UG_L 2000 Y IR88-MW05IW 3839161.869 284783.157 8/9/2007 GW cis-1,2-Dichloroethene 630 UG_L 83 Y IR88-MW05IW 3839161.869 284783.157 8/9/2007 GW Ethane 2 U UG_L 2 N IR88-MW05IW 3839161.869 284783.157 8/9/2007 GW Ethene 2 U UG_L 2 N IR88-MW05IW 3839161.869 284783.157 8/9/2007 GW Ferric iron 241 J UG_L 400 Y IR88-MW05IW 3839161.869 284783.157 8/9/2007 GW Ferrous iron 400 U UG_L 400 N IR88-MW05IW 3839161.869 284783.157 8/9/2007 GW Methane 22 UG_L 1 Y IR88-MW05IW 3839161.869 284783.157 8/9/2007 GW Nitrate 50 U UG_L 50 N IR88-MW05IW 3839161.869 284783.157 8/9/2007 GW Nitrite 120 UG_L 50 Y IR88-MW05IW 3839161.869 284783.157 8/9/2007 GW Tetrachloroethene 1500 UG_L 83 Y IR88-MW05IW 3839161.869 284783.157 8/9/2007 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW05IW 3839161.869 284783.157 8/9/2007 GW Trichloroethene 1600 UG_L 83 Y IR88-MW05IW 3839161.869 284783.157 8/9/2007 GW Vinyl chloride 8.3 U UG_L 8.3 N IR88-MW05IW 3839161.869 284783.157 10/15/2011 GW Benzene 5 U UG_L 2.5 10 5 N IR88-MW05IW 3839161.869 284783.157 10/15/2011 GW cis-1,2-Dichloroethene 1180 UG_L 2.5 10 5 Y IR88-MW05IW 3839161.869 284783.157 10/15/2011 GW Tetrachloroethene 432 UG_L 2.5 10 5 Y IR88-MW05IW 3839161.869 284783.157 10/15/2011 GW Trichloroethene 29.4 UG_L 2.5 10 5 Y IR88-MW05IW 3839161.869 284783.157 10/15/2011 GW Vinyl chloride 5 U UG_L 2.5 10 5 N IR88-MW05IW 3839161.869 284783.157 10/25/2014 GW Benzene 10 U UG_L 5 20 10 N IR88-MW05IW 3839161.869 284783.157 10/25/2014 GW cis-1,2-Dichloroethene 5330 UG_L 12.5 50 25 Y IR88-MW05IW 3839161.869 284783.157 10/25/2014 GW Naphthalene 10 U UG_L 5 20 10 N IR88-MW05IW 3839161.869 284783.157 10/25/2014 GW Tetrachloroethene 24.9 UG_L 5 20 10 Y IR88-MW05IW 3839161.869 284783.157 10/25/2014 GW Trichloroethene 10 U UG_L 5 20 10 N IR88-MW05IW 3839161.869 284783.157 10/25/2014 GW Vinyl chloride 10 U UG_L 5 20 10 N IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW Alkalinity 237 MG_L 0.26 1 0.5 Y IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW BAV1 R-Dase 5 U CELLS_ML 1 5 N IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW Benzene 50 UJ UG_L 20 100 50 N IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW Chloride 34.9 MG_L 0.25 1 0.5 Y IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW cis-1,2-Dichloroethene 8430 J UG_L 20 100 50 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW Dehalococcoides 56.5 CELLS_ML 1 5 Y IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW Ethane 0.0394 MG_L 0.0033 0.03 0.0066 Y IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW Ethene 0.0553 MG_L 0.0045 0.03 0.0087 Y IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW Methane 0.6 MG_L 0.0131 0.06 0.0327 Y IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW Naphthalene 50 UJ UG_L 20 500 50 N IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW Nitrate 0.15 U MG_L 0.1 0.2 0.15 N IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW Nitrite 0.15 U MG_L 0.1 0.2 0.15 N IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW TCE R-Dase 5 U CELLS_ML 1 5 N IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW Tetrachloroethene 50 UJ UG_L 20 100 50 N IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW Total organic carbon (TOC) 5.89 MG_L 0.3 2 1 Y IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW Trichloroethene 50 UJ UG_L 20 100 50 N IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW VC R-Dase 5 U CELLS_ML 1 5 N IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW Vinyl chloride 50 UJ UG_L 20 100 50 N IR88-MW05IW 3839161.869 284783.157 1/31/2019 GW Sulfide 1.5 U MG_L 1.08 2 1.5 N IR88-MW05IW 3839161.869 284783.157 12/12/2019 GW Alkalinity 330 MG_L 0.23 5 4 Y IR88-MW05IW 3839161.869 284783.157 12/12/2019 GW BAV1 R-Dase 13500 CELLS_ML 0.08 0.4 Y IR88-MW05IW 3839161.869 284783.157 12/12/2019 GW Benzene 0.94 J UG_L 0.52 2 1 Y IR88-MW05IW 3839161.869 284783.157 12/12/2019 GW Chloride 60 MG_L 0.5 10 5 Y IR88-MW05IW 3839161.869 284783.157 12/12/2019 GW cis-1,2-Dichloroethene 880 UG_L 4.2 20 10 Y IR88-MW05IW 3839161.869 284783.157 12/12/2019 GW Dehalococcoides 66000 CELLS_ML 0.08 0.4 Y IR88-MW05IW 3839161.869 284783.157 12/12/2019 GW Ethane 0.053 MG_L 0.0022 0.01 0.005 Y IR88-MW05IW 3839161.869 284783.157 12/12/2019 GW Ethene 1.4 MG_L 0.002 0.01 0.005 Y IR88-MW05IW 3839161.869 284783.157 12/12/2019 GW Methane 9.4 MG_L 0.048 0.25 0.12 Y IR88-MW05IW 3839161.869 284783.157 12/12/2019 GW Naphthalene 1 U UG_L 0.6 2 1 N IR88-MW05IW 3839161.869 284783.157 12/12/2019 GW TCE R-Dase 0.4 U CELLS_ML 0.08 0.4 N IR88-MW05IW 3839161.869 284783.157 12/12/2019 GW Tetrachloroethene 1 U UG_L 0.8 2 1 N IR88-MW05IW 3839161.869 284783.157 12/12/2019 GW Total organic carbon (TOC) 24 MG_L 0.1 1 0.5 Y IR88-MW05IW 3839161.869 284783.157 12/12/2019 GW Trichloroethene 1 U UG_L 0.56 2 1 N IR88-MW05IW 3839161.869 284783.157 12/12/2019 GW VC R-Dase 0.4 U CELLS_ML 0.08 0.4 N IR88-MW05IW 3839161.869 284783.157 12/12/2019 GW Vinyl chloride 1600 UG_L 5 40 20 Y IR88-MW05IW 3839161.869 284783.157 12/12/2019 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW05IW 3839161.869 284783.157 4/16/2020 GW Alkalinity 350 MG_L 0.23 5 4 Y IR88-MW05IW 3839161.869 284783.157 4/16/2020 GW BAV1 R-Dase 2790 CELLS_ML 0.063 0.3 Y IR88-MW05IW 3839161.869 284783.157 4/16/2020 GW Benzene 1.2 UG_L 0.26 1 0.5 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW05IW 3839161.869 284783.157 4/16/2020 GW Chloride 53 MG_L 0.5 10 5 Y IR88-MW05IW 3839161.869 284783.157 4/16/2020 GW cis-1,2-Dichloroethene 130 UG_L 1 5 2.5 Y IR88-MW05IW 3839161.869 284783.157 4/16/2020 GW Dehalococcoides 30200 CELLS_ML 0.063 0.3 Y IR88-MW05IW 3839161.869 284783.157 4/16/2020 GW Ethane 0.043 MG_L 0.0022 0.01 0.005 Y IR88-MW05IW 3839161.869 284783.157 4/16/2020 GW Ethene 1.9 MG_L 0.002 0.01 0.005 Y IR88-MW05IW 3839161.869 284783.157 4/16/2020 GW Methane 18 MG_L 0.048 0.25 0.12 Y IR88-MW05IW 3839161.869 284783.157 4/16/2020 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW05IW 3839161.869 284783.157 4/16/2020 GW TCE R-Dase 0.3 U CELLS_ML 0.063 0.3 N IR88-MW05IW 3839161.869 284783.157 4/16/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW05IW 3839161.869 284783.157 4/16/2020 GW Total organic carbon (TOC) 31 MG_L 0.1 1 0.5 Y IR88-MW05IW 3839161.869 284783.157 4/16/2020 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW05IW 3839161.869 284783.157 4/16/2020 GW VC R-Dase 24 CELLS_ML 0.063 0.3 Y IR88-MW05IW 3839161.869 284783.157 4/16/2020 GW Vinyl chloride 480 UG_L 1.2 10 5 Y IR88-MW05IW 3839161.869 284783.157 4/16/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW05IW 3839161.869 284783.157 11/5/2020 GW Alkalinity 320 MG_L 0.23 5 4 Y IR88-MW05IW 3839161.869 284783.157 11/5/2020 GW BAV1 R-Dase 519 CELLS_ML 0.063 0.3 Y IR88-MW05IW 3839161.869 284783.157 11/5/2020 GW Benzene 2.5 U UG_L 1.3 5 2.5 N IR88-MW05IW 3839161.869 284783.157 11/5/2020 GW Chloride 47 MG_L 0.5 10 5 Y IR88-MW05IW 3839161.869 284783.157 11/5/2020 GW cis-1,2-Dichloroethene 260 J UG_L 1 5 2.5 Y IR88-MW05IW 3839161.869 284783.157 11/5/2020 GW Dehalococcoides 3980 CELLS_ML 0.063 0.3 Y IR88-MW05IW 3839161.869 284783.157 11/5/2020 GW Ethane 0.027 MG_L 0.0022 0.01 0.005 Y IR88-MW05IW 3839161.869 284783.157 11/5/2020 GW Ethene 1.2 MG_L 0.002 0.01 0.005 Y IR88-MW05IW 3839161.869 284783.157 11/5/2020 GW Methane 16 MG_L 0.048 0.25 0.12 Y IR88-MW05IW 3839161.869 284783.157 11/5/2020 GW Naphthalene 2.5 U UG_L 1.5 5 2.5 N IR88-MW05IW 3839161.869 284783.157 11/5/2020 GW TCE R-Dase 2.1 CELLS_ML 0.063 0.3 Y IR88-MW05IW 3839161.869 284783.157 11/5/2020 GW Tetrachloroethene 21 UG_L 2 5 2.5 Y IR88-MW05IW 3839161.869 284783.157 11/5/2020 GW Total organic carbon (TOC) 3.9 MG_L 0.1 1 0.5 Y IR88-MW05IW 3839161.869 284783.157 11/5/2020 GW Trichloroethene 2.5 U UG_L 1.4 5 2.5 N IR88-MW05IW 3839161.869 284783.157 11/5/2020 GW VC R-Dase 265 CELLS_ML 0.063 0.3 Y IR88-MW05IW 3839161.869 284783.157 11/5/2020 GW Vinyl chloride 1500 UG_L 12 100 50 Y IR88-MW05IW 3839161.869 284783.157 11/5/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW Alkalinity 340 MG_L 0.23 5 4 Y IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW BAV1 R-Dase 690 CELLS_ML 0.05 0.3 Y IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW Benzene 2.5 U UG_L 1.3 5 2.5 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW Chloride 48 MG_L 0.5 10 5 Y IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW cis-1,2-Dichloroethene 980 J UG_L 10 50 25 Y IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW Dehalococcoides 12000 CELLS_ML 0.05 0.3 Y IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW Ethane 0.041 MG_L 0.0022 0.01 0.005 Y IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW Ethene 1.6 MG_L 0.002 0.01 0.005 Y IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW Methane 21 MG_L 0.039 0.2 0.1 Y IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW Naphthalene 2.5 U UG_L 1.5 5 2.5 N IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW Nitrate 0.025 U MG_L 0.015 0.05 0.025 N IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW Nitrite 0.025 U MG_L 0.0032 0.05 0.025 N IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW TCE R-Dase 96.2 CELLS_ML 0.05 0.3 Y IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW Tetrachloroethene 3.7 J UG_L 2 5 2.5 Y IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW Total organic carbon (TOC) 5 MG_L 0.1 1 0.5 Y IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW Trichloroethene 2.5 U UG_L 1.4 5 2.5 N IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW VC R-Dase 504 CELLS_ML 0.05 0.3 Y IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW Vinyl chloride 1600 J UG_L 12 100 50 Y IR88-MW05IW 3839161.869 284783.157 9/8/2021 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW Alkalinity 380 MG_L 0.23 5 4 Y IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW BAV1 R-Dase 689 CELLS_ML 0.077 0.4 Y IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW Benzene 0.72 J UG_L 0.52 2 1 Y IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW Chloride 49 MG_L 0.5 10 5 Y IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW cis-1,2-Dichloroethene 470 UG_L 4.2 20 10 Y IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW Dehalococcoides 13600 CELLS_ML 0.077 0.4 Y IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW Ethane 0.039 MG_L 0.0022 0.01 0.005 Y IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW Ethene 1.5 MG_L 0.002 0.01 0.005 Y IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW Methane 22 MG_L 0.048 0.25 0.12 Y IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW Naphthalene 1 U UG_L 0.6 2 1 N IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW Nitrate 0.044 J MG_L 0.017 0.05 0.025 Y IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW Nitrite 0.67 MG_L 0.0092 0.05 0.025 Y IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW TCE R-Dase 598 CELLS_ML 0.077 0.4 Y IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW Tetrachloroethene 1 U UG_L 0.8 2 1 N IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW Total organic carbon (TOC) 2.2 MG_L 0.1 1 0.5 Y IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW Trichloroethene 1 U UG_L 0.56 2 1 N IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW VC R-Dase 632 CELLS_ML 0.077 0.4 Y IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW Vinyl chloride 440 UG_L 5 40 20 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW05IW 3839161.869 284783.157 3/2/2022 GW Sulfide 1.5 MG_L 0.69 1 0.8 Y IR88-MW05IW 3839161.869 284783.157 8/18/2022 GW Alkalinity 390 MG_L 0.23 5 4 Y IR88-MW05IW 3839161.869 284783.157 8/18/2022 GW Benzene 0.96 J UG_L 0.52 2 1 Y IR88-MW05IW 3839161.869 284783.157 8/18/2022 GW Chloride 56 MG_L 0.5 10 5 Y IR88-MW05IW 3839161.869 284783.157 8/18/2022 GW cis-1,2-Dichloroethene 450 J UG_L 4.2 20 10 Y IR88-MW05IW 3839161.869 284783.157 8/18/2022 GW Ethane 0.012 MG_L 0.0022 0.01 0.005 Y IR88-MW05IW 3839161.869 284783.157 8/18/2022 GW Ethene 0.33 MG_L 0.002 0.01 0.005 Y IR88-MW05IW 3839161.869 284783.157 8/18/2022 GW Methane 24 MG_L 0.19 1 0.5 Y IR88-MW05IW 3839161.869 284783.157 8/18/2022 GW Naphthalene 1 U UG_L 0.6 2 1 N IR88-MW05IW 3839161.869 284783.157 8/18/2022 GW Nitrate 0.038 J MG_L 0.017 0.05 0.025 Y IR88-MW05IW 3839161.869 284783.157 8/18/2022 GW Nitrite 0.48 MG_L 0.0092 0.05 0.025 Y IR88-MW05IW 3839161.869 284783.157 8/18/2022 GW Tetrachloroethene 1 U UG_L 0.8 2 1 N IR88-MW05IW 3839161.869 284783.157 8/18/2022 GW Total organic carbon (TOC) 1.6 MG_L 0.37 1 0.75 Y IR88-MW05IW 3839161.869 284783.157 8/18/2022 GW Trichloroethene 1 U UG_L 0.56 2 1 N IR88-MW05IW 3839161.869 284783.157 8/18/2022 GW Vinyl chloride 840 J UG_L 5 40 20 Y IR88-MW05IW 3839161.869 284783.157 8/18/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW05IW 3839161.869 284783.157 5/13/1997 GW Benzene 10 U UG_L 10 N IR88-MW05IW 3839161.869 284783.157 5/13/1997 GW Tetrachloroethene 1400 UG_L 200 Y IR88-MW05IW 3839161.869 284783.157 5/13/1997 GW Trichloroethene 910 UG_L 200 Y IR88-MW05IW 3839161.869 284783.157 5/13/1997 GW Vinyl chloride 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 7/23/2002 GW Benzene 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 7/23/2002 GW Chloride 11600 UG_L 2000 Y IR88-MW06 3839077.9 284746.916 7/23/2002 GW cis-1,2-Dichloroethene 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 7/23/2002 GW Ethane 2 U UG_L 2 N IR88-MW06 3839077.9 284746.916 7/23/2002 GW Ethene 2 U UG_L 2 N IR88-MW06 3839077.9 284746.916 7/23/2002 GW Ferrous iron 100 U UG_L 100 N IR88-MW06 3839077.9 284746.916 7/23/2002 GW Methane 0.7 U UG_L 1 N IR88-MW06 3839077.9 284746.916 7/23/2002 GW Nitrate 3900 UG_L 50 Y IR88-MW06 3839077.9 284746.916 7/23/2002 GW Tetrachloroethene 0.4 J UG_L 10 Y IR88-MW06 3839077.9 284746.916 7/23/2002 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW06 3839077.9 284746.916 7/23/2002 GW Trichloroethene 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 7/23/2002 GW Vinyl chloride 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 7/23/2002 GW Sulfide 500 U UG_L 500 N IR88-MW06 3839077.9 284746.916 10/3/2003 GW Benzene 1 U UG_L 1 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW06 3839077.9 284746.916 10/3/2003 GW Chloride 4400 UG_L 2000 Y IR88-MW06 3839077.9 284746.916 10/3/2003 GW cis-1,2-Dichloroethene 1 U UG_L 1 N IR88-MW06 3839077.9 284746.916 10/3/2003 GW Ethane 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 10/3/2003 GW Ethene 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 10/3/2003 GW Methane 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 10/3/2003 GW Nitrate 4600 UG_L 200 Y IR88-MW06 3839077.9 284746.916 10/3/2003 GW Nitrite 50 U UG_L 50 N IR88-MW06 3839077.9 284746.916 10/3/2003 GW Tetrachloroethene 0.9 J UG_L 1 Y IR88-MW06 3839077.9 284746.916 10/3/2003 GW Total organic carbon (TOC) 3500 UG_L 1000 Y IR88-MW06 3839077.9 284746.916 10/3/2003 GW Trichloroethene 1 U UG_L 1 N IR88-MW06 3839077.9 284746.916 10/3/2003 GW Vinyl chloride 2 U UG_L 2 N IR88-MW06 3839077.9 284746.916 10/26/2004 GW Alkalinity 96000 J- UG_L 5000 Y IR88-MW06 3839077.9 284746.916 10/26/2004 GW Benzene 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 10/26/2004 GW Chloride 3100 UG_L 2000 Y IR88-MW06 3839077.9 284746.916 10/26/2004 GW cis-1,2-Dichloroethene 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 10/26/2004 GW Ethane 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 10/26/2004 GW Ethene 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 10/26/2004 GW Methane 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 10/26/2004 GW Nitrate 3800 UG_L 100 Y IR88-MW06 3839077.9 284746.916 10/26/2004 GW Nitrite 50 U UG_L 50 N IR88-MW06 3839077.9 284746.916 10/26/2004 GW Tetrachloroethene 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 10/26/2004 GW Trichloroethene 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 10/26/2004 GW Vinyl chloride 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 10/26/2004 GW Sulfide 1000 U UG_L 1000 N IR88-MW06 3839077.9 284746.916 11/19/2005 GW Alkalinity 120000 UG_L 10000 Y IR88-MW06 3839077.9 284746.916 11/19/2005 GW Benzene 0.5 U UG_L 0.5 N IR88-MW06 3839077.9 284746.916 11/19/2005 GW Chloride 4560 UG_L 2000 Y IR88-MW06 3839077.9 284746.916 11/19/2005 GW cis-1,2-Dichloroethene 0.5 UJ UG_L 0.5 N IR88-MW06 3839077.9 284746.916 11/19/2005 GW Ethane 2 U UG_L 2 N IR88-MW06 3839077.9 284746.916 11/19/2005 GW Ethene 2 U UG_L 2 N IR88-MW06 3839077.9 284746.916 11/19/2005 GW Ferric iron 400 U UG_L 400 N IR88-MW06 3839077.9 284746.916 11/19/2005 GW Methane 1 U UG_L 1 N IR88-MW06 3839077.9 284746.916 11/19/2005 GW Nitrate 6430 UG_L 50 Y IR88-MW06 3839077.9 284746.916 11/19/2005 GW Nitrite 50 U UG_L 50 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW06 3839077.9 284746.916 11/19/2005 GW Tetrachloroethene 1.1 UG_L 0.5 Y IR88-MW06 3839077.9 284746.916 11/19/2005 GW Total organic carbon (TOC) 3700 J UG_L 5000 Y IR88-MW06 3839077.9 284746.916 11/19/2005 GW Trichloroethene 0.5 U UG_L 0.5 N IR88-MW06 3839077.9 284746.916 11/19/2005 GW Vinyl chloride 0.5 U UG_L 0.5 N IR88-MW06 3839077.9 284746.916 11/19/2005 GW Sulfide 1000 U UG_L 1000 N IR88-MW06 3839077.9 284746.916 12/12/2019 GW Alkalinity 120 MG_L 0.23 5 4 Y IR88-MW06 3839077.9 284746.916 12/12/2019 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW06 3839077.9 284746.916 12/12/2019 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW06 3839077.9 284746.916 12/12/2019 GW Chloride 6.7 MG_L 0.0993 2 1 Y IR88-MW06 3839077.9 284746.916 12/12/2019 GW cis-1,2-Dichloroethene 0.5 U UG_L 0.21 1 0.5 N IR88-MW06 3839077.9 284746.916 12/12/2019 GW Dehalococcoides 0.6 CELLS_ML 0.05 0.3 Y IR88-MW06 3839077.9 284746.916 12/12/2019 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW06 3839077.9 284746.916 12/12/2019 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW06 3839077.9 284746.916 12/12/2019 GW Methane 0.0038 J MG_L 0.0019 0.01 0.005 Y IR88-MW06 3839077.9 284746.916 12/12/2019 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW06 3839077.9 284746.916 12/12/2019 GW TCE R-Dase 0.061 J CELLS_ML 0.05 0.3 Y IR88-MW06 3839077.9 284746.916 12/12/2019 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW06 3839077.9 284746.916 12/12/2019 GW Total organic carbon (TOC) 3.2 MG_L 0.1 1 0.5 Y IR88-MW06 3839077.9 284746.916 12/12/2019 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW06 3839077.9 284746.916 12/12/2019 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW06 3839077.9 284746.916 12/12/2019 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW06 3839077.9 284746.916 12/12/2019 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW06 3839077.9 284746.916 4/17/2020 GW Alkalinity 130 MG_L 0.23 5 4 Y IR88-MW06 3839077.9 284746.916 4/17/2020 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW06 3839077.9 284746.916 4/17/2020 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW06 3839077.9 284746.916 4/17/2020 GW Chloride 8.8 MG_L 0.0993 2 1 Y IR88-MW06 3839077.9 284746.916 4/17/2020 GW cis-1,2-Dichloroethene 0.5 U UG_L 0.21 1 0.5 N IR88-MW06 3839077.9 284746.916 4/17/2020 GW Dehalococcoides 0.2 J CELLS_ML 0.05 0.3 Y IR88-MW06 3839077.9 284746.916 4/17/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW06 3839077.9 284746.916 4/17/2020 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW06 3839077.9 284746.916 4/17/2020 GW Methane 0.011 MG_L 0.0019 0.01 0.005 Y IR88-MW06 3839077.9 284746.916 4/17/2020 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW06 3839077.9 284746.916 4/17/2020 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW06 3839077.9 284746.916 4/17/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW06 3839077.9 284746.916 4/17/2020 GW Total organic carbon (TOC) 3.1 MG_L 0.1 1 0.5 Y IR88-MW06 3839077.9 284746.916 4/17/2020 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW06 3839077.9 284746.916 4/17/2020 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW06 3839077.9 284746.916 4/17/2020 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW06 3839077.9 284746.916 4/17/2020 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW06 3839077.9 284746.916 4/17/2020 GW cis-1,2-Dichloroethene 0.5 U UG_L 0.21 1 0.5 N IR88-MW06 3839077.9 284746.916 4/17/2020 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW06 3839077.9 284746.916 4/17/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW06 3839077.9 284746.916 4/17/2020 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW06 3839077.9 284746.916 4/17/2020 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW06 3839077.9 284746.916 4/17/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW06 3839077.9 284746.916 11/9/2020 GW Alkalinity 140 MG_L 0.23 5 4 Y IR88-MW06 3839077.9 284746.916 11/9/2020 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW06 3839077.9 284746.916 11/9/2020 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW06 3839077.9 284746.916 11/9/2020 GW Chloride 4.9 MG_L 0.0993 2 1 Y IR88-MW06 3839077.9 284746.916 11/9/2020 GW cis-1,2-Dichloroethene 0.5 U UG_L 0.21 1 0.5 N IR88-MW06 3839077.9 284746.916 11/9/2020 GW Dehalococcoides 0.3 J CELLS_ML 0.05 0.3 Y IR88-MW06 3839077.9 284746.916 11/9/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW06 3839077.9 284746.916 11/9/2020 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW06 3839077.9 284746.916 11/9/2020 GW Methane 0.0049 J MG_L 0.0019 0.01 0.005 Y IR88-MW06 3839077.9 284746.916 11/9/2020 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW06 3839077.9 284746.916 11/9/2020 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW06 3839077.9 284746.916 11/9/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW06 3839077.9 284746.916 11/9/2020 GW Total organic carbon (TOC) 3.2 MG_L 0.1 1 0.5 Y IR88-MW06 3839077.9 284746.916 11/9/2020 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW06 3839077.9 284746.916 11/9/2020 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW06 3839077.9 284746.916 11/9/2020 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW06 3839077.9 284746.916 11/9/2020 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW06 3839077.9 284746.916 11/9/2020 GW cis-1,2-Dichloroethene 0.5 U UG_L 0.21 1 0.5 N IR88-MW06 3839077.9 284746.916 11/9/2020 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW06 3839077.9 284746.916 11/9/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW06 3839077.9 284746.916 11/9/2020 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW06 3839077.9 284746.916 11/9/2020 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW06 3839077.9 284746.916 11/9/2020 GW Sulfide 0.71 J MG_L 0.69 1 0.8 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW06 3839077.9 284746.916 9/13/2021 GW Alkalinity 140 MG_L 0.23 5 4 Y IR88-MW06 3839077.9 284746.916 9/13/2021 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW06 3839077.9 284746.916 9/13/2021 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW06 3839077.9 284746.916 9/13/2021 GW Chloride 4.7 MG_L 0.099 2 1 Y IR88-MW06 3839077.9 284746.916 9/13/2021 GW cis-1,2-Dichloroethene 0.5 U UG_L 0.21 1 0.5 N IR88-MW06 3839077.9 284746.916 9/13/2021 GW Dehalococcoides 0.3 CELLS_ML 0.05 0.3 Y IR88-MW06 3839077.9 284746.916 9/13/2021 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW06 3839077.9 284746.916 9/13/2021 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW06 3839077.9 284746.916 9/13/2021 GW Methane 0.005 U MG_L 0.0019 0.01 0.005 N IR88-MW06 3839077.9 284746.916 9/13/2021 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW06 3839077.9 284746.916 9/13/2021 GW Nitrate 3.5 MG_L 0.017 0.05 0.025 Y IR88-MW06 3839077.9 284746.916 9/13/2021 GW Nitrite 0.24 MG_L 0.0092 0.05 0.025 Y IR88-MW06 3839077.9 284746.916 9/13/2021 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW06 3839077.9 284746.916 9/13/2021 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW06 3839077.9 284746.916 9/13/2021 GW Total organic carbon (TOC) 3 MG_L 0.1 1 0.5 Y IR88-MW06 3839077.9 284746.916 9/13/2021 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW06 3839077.9 284746.916 9/13/2021 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW06 3839077.9 284746.916 9/13/2021 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW06 3839077.9 284746.916 9/13/2021 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW06 3839077.9 284746.916 9/13/2021 GW cis-1,2-Dichloroethene 0.5 U UG_L 0.21 1 0.5 N IR88-MW06 3839077.9 284746.916 9/13/2021 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW06 3839077.9 284746.916 9/13/2021 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW06 3839077.9 284746.916 9/13/2021 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW06 3839077.9 284746.916 9/13/2021 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW06 3839077.9 284746.916 9/13/2021 GW Sulfide 1.5 MG_L 0.69 1 0.8 Y IR88-MW06 3839077.9 284746.916 3/2/2022 GW Alkalinity 120 MG_L 0.23 5 4 Y IR88-MW06 3839077.9 284746.916 3/2/2022 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW06 3839077.9 284746.916 3/2/2022 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW06 3839077.9 284746.916 3/2/2022 GW Chloride 4 MG_L 0.099 2 1 Y IR88-MW06 3839077.9 284746.916 3/2/2022 GW cis-1,2-Dichloroethene 0.5 U UG_L 0.21 1 0.5 N IR88-MW06 3839077.9 284746.916 3/2/2022 GW Dehalococcoides 0.5 CELLS_ML 0.05 0.3 Y IR88-MW06 3839077.9 284746.916 3/2/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW06 3839077.9 284746.916 3/2/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW06 3839077.9 284746.916 3/2/2022 GW Methane 0.016 MG_L 0.0019 0.01 0.005 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW06 3839077.9 284746.916 3/2/2022 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW06 3839077.9 284746.916 3/2/2022 GW Nitrate 2.2 MG_L 0.017 0.05 0.025 Y IR88-MW06 3839077.9 284746.916 3/2/2022 GW Nitrite 0.23 MG_L 0.0092 0.05 0.025 Y IR88-MW06 3839077.9 284746.916 3/2/2022 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW06 3839077.9 284746.916 3/2/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW06 3839077.9 284746.916 3/2/2022 GW Total organic carbon (TOC) 2.6 MG_L 0.1 1 0.5 Y IR88-MW06 3839077.9 284746.916 3/2/2022 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW06 3839077.9 284746.916 3/2/2022 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW06 3839077.9 284746.916 3/2/2022 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW06 3839077.9 284746.916 3/2/2022 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW06 3839077.9 284746.916 3/2/2022 GW cis-1,2-Dichloroethene 0.5 U UG_L 0.21 1 0.5 N IR88-MW06 3839077.9 284746.916 3/2/2022 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW06 3839077.9 284746.916 3/2/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW06 3839077.9 284746.916 3/2/2022 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW06 3839077.9 284746.916 3/2/2022 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW06 3839077.9 284746.916 3/2/2022 GW Sulfide 1 MG_L 0.69 1 0.8 Y IR88-MW06 3839077.9 284746.916 8/18/2022 GW Alkalinity 120 MG_L 0.23 5 4 Y IR88-MW06 3839077.9 284746.916 8/18/2022 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW06 3839077.9 284746.916 8/18/2022 GW Chloride 4.5 MG_L 0.099 2 1 Y IR88-MW06 3839077.9 284746.916 8/18/2022 GW cis-1,2-Dichloroethene 0.5 U UG_L 0.21 1 0.5 N IR88-MW06 3839077.9 284746.916 8/18/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW06 3839077.9 284746.916 8/18/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW06 3839077.9 284746.916 8/18/2022 GW Methane 0.005 U MG_L 0.0019 0.01 0.005 N IR88-MW06 3839077.9 284746.916 8/18/2022 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW06 3839077.9 284746.916 8/18/2022 GW Nitrate 4.4 MG_L 0.017 0.05 0.025 Y IR88-MW06 3839077.9 284746.916 8/18/2022 GW Nitrite 0.23 MG_L 0.0092 0.05 0.025 Y IR88-MW06 3839077.9 284746.916 8/18/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW06 3839077.9 284746.916 8/18/2022 GW Total organic carbon (TOC) 2.8 MG_L 0.37 1 0.75 Y IR88-MW06 3839077.9 284746.916 8/18/2022 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW06 3839077.9 284746.916 8/18/2022 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW06 3839077.9 284746.916 8/18/2022 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW06 3839077.9 284746.916 8/18/2022 GW cis-1,2-Dichloroethene 0.5 U UG_L 0.21 1 0.5 N IR88-MW06 3839077.9 284746.916 8/18/2022 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW06 3839077.9 284746.916 8/18/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW06 3839077.9 284746.916 8/18/2022 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW06 3839077.9 284746.916 8/18/2022 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW06 3839077.9 284746.916 8/18/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW06 3839077.9 284746.916 10/3/2003 GW Benzene 1 U UG_L 1 N IR88-MW06 3839077.9 284746.916 10/3/2003 GW Chloride 4800 UG_L 2000 Y IR88-MW06 3839077.9 284746.916 10/3/2003 GW cis-1,2-Dichloroethene 1 U UG_L 1 N IR88-MW06 3839077.9 284746.916 10/3/2003 GW Ethane 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 10/3/2003 GW Ethene 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 10/3/2003 GW Methane 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 10/3/2003 GW Nitrate 4600 UG_L 200 Y IR88-MW06 3839077.9 284746.916 10/3/2003 GW Nitrite 50 U UG_L 50 N IR88-MW06 3839077.9 284746.916 10/3/2003 GW Tetrachloroethene 0.9 J UG_L 1 Y IR88-MW06 3839077.9 284746.916 10/3/2003 GW Total organic carbon (TOC) 3800 UG_L 1000 Y IR88-MW06 3839077.9 284746.916 10/3/2003 GW Trichloroethene 1 U UG_L 1 N IR88-MW06 3839077.9 284746.916 10/3/2003 GW Vinyl chloride 2 U UG_L 2 N IR88-MW06 3839077.9 284746.916 5/15/1997 GW Benzene 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 5/15/1997 GW Tetrachloroethene 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 5/15/1997 GW Trichloroethene 10 U UG_L 10 N IR88-MW06 3839077.9 284746.916 5/15/1997 GW Vinyl chloride 10 U UG_L 10 N IR88-MW15IW 3839055.261 284508.649 9/29/2003 GW Benzene 1 U UG_L 1 N IR88-MW15IW 3839055.261 284508.649 9/29/2003 GW Chloride 22000 UG_L 2000 Y IR88-MW15IW 3839055.261 284508.649 9/29/2003 GW cis-1,2-Dichloroethene 23 UG_L 1 Y IR88-MW15IW 3839055.261 284508.649 9/29/2003 GW Ethane 10 U UG_L 10 N IR88-MW15IW 3839055.261 284508.649 9/29/2003 GW Ethene 10 U UG_L 10 N IR88-MW15IW 3839055.261 284508.649 9/29/2003 GW Methane 10 U UG_L 10 N IR88-MW15IW 3839055.261 284508.649 9/29/2003 GW Nitrate 50 U UG_L 50 N IR88-MW15IW 3839055.261 284508.649 9/29/2003 GW Nitrite 50 U UG_L 50 N IR88-MW15IW 3839055.261 284508.649 9/29/2003 GW Tetrachloroethene 280 UG_L 5 Y IR88-MW15IW 3839055.261 284508.649 9/29/2003 GW Total organic carbon (TOC) 1200 UG_L 1000 Y IR88-MW15IW 3839055.261 284508.649 9/29/2003 GW Trichloroethene 16 UG_L 1 Y IR88-MW15IW 3839055.261 284508.649 9/29/2003 GW Vinyl chloride 2 U UG_L 2 N IR88-MW15IW 3839055.261 284508.649 10/27/2004 GW Alkalinity 66000 UG_L 5000 Y IR88-MW15IW 3839055.261 284508.649 10/27/2004 GW Benzene 10 U UG_L 10 N IR88-MW15IW 3839055.261 284508.649 10/27/2004 GW Chloride 23000 UG_L 2000 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW15IW 3839055.261 284508.649 10/27/2004 GW cis-1,2-Dichloroethene 39 UG_L 10 Y IR88-MW15IW 3839055.261 284508.649 10/27/2004 GW Ethane 10 U UG_L 10 N IR88-MW15IW 3839055.261 284508.649 10/27/2004 GW Ethene 10 U UG_L 10 N IR88-MW15IW 3839055.261 284508.649 10/27/2004 GW Methane 16 UG_L 10 Y IR88-MW15IW 3839055.261 284508.649 10/27/2004 GW Nitrate 50 UJ UG_L 50 N IR88-MW15IW 3839055.261 284508.649 10/27/2004 GW Nitrite 50 UJ UG_L 50 N IR88-MW15IW 3839055.261 284508.649 10/27/2004 GW Tetrachloroethene 200 UG_L 20 Y IR88-MW15IW 3839055.261 284508.649 10/27/2004 GW Trichloroethene 15 UG_L 10 Y IR88-MW15IW 3839055.261 284508.649 10/27/2004 GW Vinyl chloride 10 U UG_L 10 N IR88-MW15IW 3839055.261 284508.649 10/27/2004 GW Sulfide 1000 U UG_L 1000 N IR88-MW15IW 3839055.261 284508.649 11/18/2005 GW Alkalinity 43200 UG_L 10000 Y IR88-MW15IW 3839055.261 284508.649 11/18/2005 GW Benzene 0.5 U UG_L 0.5 N IR88-MW15IW 3839055.261 284508.649 11/18/2005 GW Chloride 17300 UG_L 2000 Y IR88-MW15IW 3839055.261 284508.649 11/18/2005 GW cis-1,2-Dichloroethene 19 UG_L 0.5 Y IR88-MW15IW 3839055.261 284508.649 11/18/2005 GW Ethane 2 U UG_L 2 N IR88-MW15IW 3839055.261 284508.649 11/18/2005 GW Ethene 2 U UG_L 2 N IR88-MW15IW 3839055.261 284508.649 11/18/2005 GW Ferric iron 400 U UG_L 400 N IR88-MW15IW 3839055.261 284508.649 11/18/2005 GW Methane 5 UG_L 1 Y IR88-MW15IW 3839055.261 284508.649 11/18/2005 GW Nitrate 50 U UG_L 50 N IR88-MW15IW 3839055.261 284508.649 11/18/2005 GW Nitrite 50 U UG_L 50 N IR88-MW15IW 3839055.261 284508.649 11/18/2005 GW Tetrachloroethene 230 UG_L 18 Y IR88-MW15IW 3839055.261 284508.649 11/18/2005 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW15IW 3839055.261 284508.649 11/18/2005 GW Trichloroethene 14 UG_L 0.5 Y IR88-MW15IW 3839055.261 284508.649 11/18/2005 GW Vinyl chloride 0.5 U UG_L 0.5 N IR88-MW15IW 3839055.261 284508.649 11/18/2005 GW Sulfide 1000 U UG_L 1000 N IR88-MW15IW 3839055.261 284508.649 8/12/2007 GW Alkalinity 61700 UG_L 10000 Y IR88-MW15IW 3839055.261 284508.649 8/12/2007 GW Benzene 6.3 U UG_L 6.3 N IR88-MW15IW 3839055.261 284508.649 8/12/2007 GW Chloride 20200 UG_L 2000 Y IR88-MW15IW 3839055.261 284508.649 8/12/2007 GW cis-1,2-Dichloroethene 12 UG_L 6.3 Y IR88-MW15IW 3839055.261 284508.649 8/12/2007 GW Ethane 2 U UG_L 2 N IR88-MW15IW 3839055.261 284508.649 8/12/2007 GW Ethene 2 U UG_L 2 N IR88-MW15IW 3839055.261 284508.649 8/12/2007 GW Ferric iron 400 U UG_L 400 N IR88-MW15IW 3839055.261 284508.649 8/12/2007 GW Ferrous iron 800 UG_L 400 Y IR88-MW15IW 3839055.261 284508.649 8/12/2007 GW Methane 11 UG_L 1 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW15IW 3839055.261 284508.649 8/12/2007 GW Nitrate 50 U UG_L 50 N IR88-MW15IW 3839055.261 284508.649 8/12/2007 GW Nitrite 50 U UG_L 50 N IR88-MW15IW 3839055.261 284508.649 8/12/2007 GW Tetrachloroethene 91 UG_L 6.3 Y IR88-MW15IW 3839055.261 284508.649 8/12/2007 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW15IW 3839055.261 284508.649 8/12/2007 GW Trichloroethene 7.7 UG_L 6.3 Y IR88-MW15IW 3839055.261 284508.649 8/12/2007 GW Vinyl chloride 6.3 U UG_L 6.3 N IR88-MW15IW 3839055.261 284508.649 8/12/2007 GW Sulfide 600 J UG_L 1000 Y IR88-MW15IW 3839055.261 284508.649 10/22/2014 GW Benzene 0.5 U UG_L 0.25 1 0.5 N IR88-MW15IW 3839055.261 284508.649 10/22/2014 GW cis-1,2-Dichloroethene 6.56 UG_L 0.25 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 10/22/2014 GW Naphthalene 0.5 U UG_L 0.25 1 0.5 N IR88-MW15IW 3839055.261 284508.649 10/22/2014 GW Tetrachloroethene 71.4 UG_L 0.25 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 10/22/2014 GW Trichloroethene 6.99 UG_L 0.25 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 10/22/2014 GW Vinyl chloride 0.5 U UG_L 0.25 1 0.5 N IR88-MW15IW 3839055.261 284508.649 12/10/2019 GW Alkalinity 26 MG_L 0.23 5 4 Y IR88-MW15IW 3839055.261 284508.649 12/10/2019 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW15IW 3839055.261 284508.649 12/10/2019 GW Chloride 15 J MG_L 0.99 20 10 Y IR88-MW15IW 3839055.261 284508.649 12/10/2019 GW cis-1,2-Dichloroethene 2.5 UG_L 0.21 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 12/10/2019 GW Dehalococcoides 115 CELLS_ML 0.05 0.3 Y IR88-MW15IW 3839055.261 284508.649 12/10/2019 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW15IW 3839055.261 284508.649 12/10/2019 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW15IW 3839055.261 284508.649 12/10/2019 GW Methane 0.015 MG_L 0.0019 0.01 0.005 Y IR88-MW15IW 3839055.261 284508.649 12/10/2019 GW TCE R-Dase 2.5 CELLS_ML 0.05 0.3 Y IR88-MW15IW 3839055.261 284508.649 12/10/2019 GW Tetrachloroethene 55 UG_L 0.4 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 12/10/2019 GW Total organic carbon (TOC) 1.8 MG_L 0.1 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 12/10/2019 GW Trichloroethene 4.8 UG_L 0.28 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 12/10/2019 GW VC R-Dase 8.5 CELLS_ML 0.05 0.3 Y IR88-MW15IW 3839055.261 284508.649 12/10/2019 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW15IW 3839055.261 284508.649 12/10/2019 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW15IW 3839055.261 284508.649 4/14/2020 GW Alkalinity 22 MG_L 0.23 5 4 Y IR88-MW15IW 3839055.261 284508.649 4/14/2020 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW15IW 3839055.261 284508.649 4/14/2020 GW Chloride 15 MG_L 0.0993 2 1 Y IR88-MW15IW 3839055.261 284508.649 4/14/2020 GW cis-1,2-Dichloroethene 2 UG_L 0.21 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 4/14/2020 GW Dehalococcoides 9 CELLS_ML 0.05 0.3 Y IR88-MW15IW 3839055.261 284508.649 4/14/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW15IW 3839055.261 284508.649 4/14/2020 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW15IW 3839055.261 284508.649 4/14/2020 GW Methane 0.012 MG_L 0.0019 0.01 0.005 Y IR88-MW15IW 3839055.261 284508.649 4/14/2020 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW15IW 3839055.261 284508.649 4/14/2020 GW Tetrachloroethene 69 UG_L 0.4 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 4/14/2020 GW Total organic carbon (TOC) 1.1 MG_L 0.1 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 4/14/2020 GW Trichloroethene 5.4 UG_L 0.28 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 4/14/2020 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW15IW 3839055.261 284508.649 4/14/2020 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW15IW 3839055.261 284508.649 4/14/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW Alkalinity 18 MG_L 0.23 5 4 Y IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW Chloride 15 MG_L 0.0993 2 1 Y IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW cis-1,2-Dichloroethene 1.7 UG_L 0.21 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW Dehalococcoides 19.7 CELLS_ML 0.05 0.3 Y IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW Methane 0.016 MG_L 0.0019 0.01 0.005 Y IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW TCE R-Dase 0.4 CELLS_ML 0.05 0.3 Y IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW Tetrachloroethene 67 UG_L 0.4 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW Total organic carbon (TOC) 1 MG_L 0.1 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW Trichloroethene 4.3 UG_L 0.28 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW VC R-Dase 0.3 J CELLS_ML 0.05 0.3 Y IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW Vinyl chloride 0.05 UJ UG_L 0.017 0.1 0.05 N IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW cis-1,2-Dichloroethene 1.6 UG_L 0.21 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW Tetrachloroethene 60 UG_L 0.4 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW Trichloroethene 4 UG_L 0.28 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW Vinyl chloride 0.05 UJ UG_L 0.017 0.1 0.05 N IR88-MW15IW 3839055.261 284508.649 11/4/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW Alkalinity 21 MG_L 0.23 5 4 Y IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW Chloride 16 MG_L 0.099 2 1 Y IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW cis-1,2-Dichloroethene 1.4 UG_L 0.21 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW Dehalococcoides 23.5 CELLS_ML 0.05 0.3 Y IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW Methane 0.0066 J MG_L 0.0019 0.01 0.005 Y IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW Nitrate 0.025 U MG_L 0.015 0.05 0.025 N IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW Nitrite 0.025 U MG_L 0.0032 0.05 0.025 N IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW TCE R-Dase 0.051 J CELLS_ML 0.05 0.3 Y IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW Tetrachloroethene 54 UG_L 0.4 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW Total organic carbon (TOC) 1.1 MG_L 0.1 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW Trichloroethene 4.1 UG_L 0.28 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW cis-1,2-Dichloroethene 1.3 UG_L 0.21 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW Tetrachloroethene 51 UG_L 0.4 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW Trichloroethene 3.8 UG_L 0.28 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW15IW 3839055.261 284508.649 9/21/2021 GW Sulfide 2 MG_L 0.69 1 0.8 Y IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW Alkalinity 22 MG_L 0.23 5 4 Y IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW BAV1 R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW Chloride 16 MG_L 0.099 2 1 Y IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW cis-1,2-Dichloroethene 1.2 UG_L 0.21 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW Dehalococcoides 10.2 CELLS_ML 0.1 0.5 Y IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW Methane 0.0046 J MG_L 0.0019 0.01 0.005 Y IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW Nitrate 0.037 J MG_L 0.017 0.05 0.025 Y IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW Nitrite 0.17 MG_L 0.0092 0.05 0.025 Y IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW TCE R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW Tetrachloroethene 46 UG_L 0.4 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW Total organic carbon (TOC) 1.2 MG_L 0.1 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW Trichloroethene 3.8 UG_L 0.28 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW VC R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW cis-1,2-Dichloroethene 1.2 UG_L 0.21 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW Tetrachloroethene 45 UG_L 0.4 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW Trichloroethene 3.3 UG_L 0.28 1 0.5 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW15IW 3839055.261 284508.649 2/24/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW15IW 3839055.261 284508.649 8/23/2022 GW Alkalinity 14 MG_L 0.23 5 4 Y IR88-MW15IW 3839055.261 284508.649 8/23/2022 GW Chloride 16 MG_L 0.099 2 1 Y IR88-MW15IW 3839055.261 284508.649 8/23/2022 GW cis-1,2-Dichloroethene 1.4 J UG_L 0.21 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 8/23/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW15IW 3839055.261 284508.649 8/23/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW15IW 3839055.261 284508.649 8/23/2022 GW Methane 0.0068 J MG_L 0.0019 0.01 0.005 Y IR88-MW15IW 3839055.261 284508.649 8/23/2022 GW Nitrate 0.047 J MG_L 0.017 0.05 0.025 Y IR88-MW15IW 3839055.261 284508.649 8/23/2022 GW Nitrite 0.31 MG_L 0.0092 0.05 0.025 Y IR88-MW15IW 3839055.261 284508.649 8/23/2022 GW Tetrachloroethene 55 J UG_L 0.4 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 8/23/2022 GW Total organic carbon (TOC) 1 MG_L 0.37 1 0.75 Y IR88-MW15IW 3839055.261 284508.649 8/23/2022 GW Trichloroethene 2.9 J UG_L 0.28 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 8/23/2022 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW15IW 3839055.261 284508.649 8/23/2022 GW cis-1,2-Dichloroethene 1.2 J UG_L 0.21 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 8/23/2022 GW Tetrachloroethene 52 J UG_L 0.4 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 8/23/2022 GW Trichloroethene 3.1 J UG_L 0.28 1 0.5 Y IR88-MW15IW 3839055.261 284508.649 8/23/2022 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW15IW 3839055.261 284508.649 8/23/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW18DW 3839105.592 284652.784 10/21/2003 GW Benzene 1 U UG_L 1 N IR88-MW18DW 3839105.592 284652.784 10/21/2003 GW Chloride 19000 UG_L 2000 Y IR88-MW18DW 3839105.592 284652.784 10/21/2003 GW cis-1,2-Dichloroethene 32 UG_L 1 Y IR88-MW18DW 3839105.592 284652.784 10/21/2003 GW Ethane 10 U UG_L 10 N IR88-MW18DW 3839105.592 284652.784 10/21/2003 GW Ethene 10 U UG_L 10 N IR88-MW18DW 3839105.592 284652.784 10/21/2003 GW Methane 130 UG_L 10 Y IR88-MW18DW 3839105.592 284652.784 10/21/2003 GW Nitrate 1100 UG_L 50 Y IR88-MW18DW 3839105.592 284652.784 10/21/2003 GW Nitrite 50 U UG_L 50 N IR88-MW18DW 3839105.592 284652.784 10/21/2003 GW Tetrachloroethene 190 UG_L 2 Y IR88-MW18DW 3839105.592 284652.784 10/21/2003 GW Total organic carbon (TOC) 1000 U UG_L 1000 N IR88-MW18DW 3839105.592 284652.784 10/21/2003 GW Trichloroethene 7 UG_L 1 Y IR88-MW18DW 3839105.592 284652.784 10/21/2003 GW Vinyl chloride 1 J UG_L 2 Y IR88-MW18DW 3839105.592 284652.784 10/28/2004 GW Alkalinity 150000 UG_L 5000 Y IR88-MW18DW 3839105.592 284652.784 10/28/2004 GW Benzene 10 U UG_L 10 N IR88-MW18DW 3839105.592 284652.784 10/28/2004 GW Chloride 10000 UG_L 2000 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW18DW 3839105.592 284652.784 10/28/2004 GW cis-1,2-Dichloroethene 140 UG_L 10 Y IR88-MW18DW 3839105.592 284652.784 10/28/2004 GW Ethane 10 U UG_L 10 N IR88-MW18DW 3839105.592 284652.784 10/28/2004 GW Ethene 10 U UG_L 10 N IR88-MW18DW 3839105.592 284652.784 10/28/2004 GW Methane 10 U UG_L 10 N IR88-MW18DW 3839105.592 284652.784 10/28/2004 GW Nitrate 50 U UG_L 50 N IR88-MW18DW 3839105.592 284652.784 10/28/2004 GW Nitrite 50 U UG_L 50 N IR88-MW18DW 3839105.592 284652.784 10/28/2004 GW Tetrachloroethene 8900 UG_L 1000 Y IR88-MW18DW 3839105.592 284652.784 10/28/2004 GW Trichloroethene 670 J UG_L 1000 Y IR88-MW18DW 3839105.592 284652.784 10/28/2004 GW Vinyl chloride 10 U UG_L 10 N IR88-MW18DW 3839105.592 284652.784 11/20/2005 GW Alkalinity 139000 UG_L 10000 Y IR88-MW18DW 3839105.592 284652.784 11/20/2005 GW Benzene 0.5 U UG_L 0.5 N IR88-MW18DW 3839105.592 284652.784 11/20/2005 GW Chloride 7590 UG_L 2000 Y IR88-MW18DW 3839105.592 284652.784 11/20/2005 GW cis-1,2-Dichloroethene 45 J UG_L 0.5 Y IR88-MW18DW 3839105.592 284652.784 11/20/2005 GW Ethane 2 U UG_L 2 N IR88-MW18DW 3839105.592 284652.784 11/20/2005 GW Ethene 0.2 J UG_L 2 Y IR88-MW18DW 3839105.592 284652.784 11/20/2005 GW Ferric iron 400 U UG_L 400 N IR88-MW18DW 3839105.592 284652.784 11/20/2005 GW Methane 1 U UG_L 1 N IR88-MW18DW 3839105.592 284652.784 11/20/2005 GW Nitrate 50 U UG_L 50 N IR88-MW18DW 3839105.592 284652.784 11/20/2005 GW Nitrite 50 U UG_L 50 N IR88-MW18DW 3839105.592 284652.784 11/20/2005 GW Tetrachloroethene 10000 UG_L 630 Y IR88-MW18DW 3839105.592 284652.784 11/20/2005 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW18DW 3839105.592 284652.784 11/20/2005 GW Trichloroethene 500 J UG_L 630 Y IR88-MW18DW 3839105.592 284652.784 11/20/2005 GW Vinyl chloride 0.5 U UG_L 0.5 N IR88-MW18DW 3839105.592 284652.784 8/13/2007 GW Alkalinity 145000 UG_L 10000 Y IR88-MW18DW 3839105.592 284652.784 8/13/2007 GW Benzene 500 U UG_L 500 N IR88-MW18DW 3839105.592 284652.784 8/13/2007 GW Chloride 7850 UG_L 2000 Y IR88-MW18DW 3839105.592 284652.784 8/13/2007 GW cis-1,2-Dichloroethene 500 U UG_L 500 N IR88-MW18DW 3839105.592 284652.784 8/13/2007 GW Ethane 2 U UG_L 2 N IR88-MW18DW 3839105.592 284652.784 8/13/2007 GW Ethene 2 U UG_L 2 N IR88-MW18DW 3839105.592 284652.784 8/13/2007 GW Ferric iron 400 U UG_L 400 N IR88-MW18DW 3839105.592 284652.784 8/13/2007 GW Ferrous iron 420 UG_L 400 Y IR88-MW18DW 3839105.592 284652.784 8/13/2007 GW Methane 1 U UG_L 1 N IR88-MW18DW 3839105.592 284652.784 8/13/2007 GW Nitrate 50 U UG_L 50 N IR88-MW18DW 3839105.592 284652.784 8/13/2007 GW Nitrite 50 U UG_L 50 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW18DW 3839105.592 284652.784 8/13/2007 GW Tetrachloroethene 5300 UG_L 500 Y IR88-MW18DW 3839105.592 284652.784 8/13/2007 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW18DW 3839105.592 284652.784 8/13/2007 GW Trichloroethene 340 J UG_L 500 Y IR88-MW18DW 3839105.592 284652.784 8/13/2007 GW Vinyl chloride 500 U UG_L 500 N IR88-MW18DW 3839105.592 284652.784 9/30/2009 GW Benzene 0.5 U UG_L 0.1 0.5 N IR88-MW18DW 3839105.592 284652.784 9/30/2009 GW Chloride 14000 D UG_L 0.83 2500 Y IR88-MW18DW 3839105.592 284652.784 9/30/2009 GW cis-1,2-Dichloroethene 7.2 UG_L 0.1 0.5 Y IR88-MW18DW 3839105.592 284652.784 9/30/2009 GW Ethane 2 U UG_L 0.03 2 N IR88-MW18DW 3839105.592 284652.784 9/30/2009 GW Ethene 2 U UG_L 0.03 2 N IR88-MW18DW 3839105.592 284652.784 9/30/2009 GW Methane 0.3 JB UG_L 0.02 1 Y IR88-MW18DW 3839105.592 284652.784 9/30/2009 GW Nitrate 50 U UG_L 0.04 50 N IR88-MW18DW 3839105.592 284652.784 9/30/2009 GW Nitrite 250 U UG_L 0.06 250 N IR88-MW18DW 3839105.592 284652.784 9/30/2009 GW Tetrachloroethene 4400 UG_L 22 100 Y IR88-MW18DW 3839105.592 284652.784 9/30/2009 GW Total organic carbon (TOC) 580 JB UG_L 0.23 1000 Y IR88-MW18DW 3839105.592 284652.784 9/30/2009 GW Trichloroethene 260 UG_L 20 100 Y IR88-MW18DW 3839105.592 284652.784 9/30/2009 GW Vinyl chloride 0.5 U UG_L 0.1 0.5 N IR88-MW18DW 3839105.592 284652.784 10/16/2011 GW Benzene 10 U UG_L 5 20 10 N IR88-MW18DW 3839105.592 284652.784 10/16/2011 GW cis-1,2-Dichloroethene 10 U UG_L 5 20 10 N IR88-MW18DW 3839105.592 284652.784 10/16/2011 GW Tetrachloroethene 2480 UG_L 5 20 10 Y IR88-MW18DW 3839105.592 284652.784 10/16/2011 GW Trichloroethene 127 J UG_L 5 20 10 Y IR88-MW18DW 3839105.592 284652.784 10/16/2011 GW Vinyl chloride 10 U UG_L 5 20 10 N IR88-MW18DW 3839105.592 284652.784 10/22/2014 GW Benzene 1 U UG_L 0.5 2 1 N IR88-MW18DW 3839105.592 284652.784 10/22/2014 GW cis-1,2-Dichloroethene 0.768 J UG_L 0.5 2 1 Y IR88-MW18DW 3839105.592 284652.784 10/22/2014 GW Naphthalene 1 U UG_L 0.5 2 1 N IR88-MW18DW 3839105.592 284652.784 10/22/2014 GW Tetrachloroethene 216 UG_L 0.5 2 1 Y IR88-MW18DW 3839105.592 284652.784 10/22/2014 GW Trichloroethene 23.3 UG_L 0.5 2 1 Y IR88-MW18DW 3839105.592 284652.784 10/22/2014 GW Vinyl chloride 1 U UG_L 0.5 2 1 N IR88-MW18DW 3839105.592 284652.784 9/17/2016 GW Benzene 25 U UG_L 12.5 50 25 N IR88-MW18DW 3839105.592 284652.784 9/17/2016 GW cis-1,2-Dichloroethene 340 UG_L 12.5 50 25 Y IR88-MW18DW 3839105.592 284652.784 9/17/2016 GW Tetrachloroethene 5210 UG_L 12.5 50 25 Y IR88-MW18DW 3839105.592 284652.784 9/17/2016 GW Trichloroethene 1120 UG_L 12.5 50 25 Y IR88-MW18DW 3839105.592 284652.784 9/17/2016 GW Vinyl chloride 35 J UG_L 12.5 50 25 Y IR88-MW18DW 3839105.592 284652.784 11/4/2020 GW cis-1,2-Dichloroethene 13 UG_L 0.21 1 0.5 Y IR88-MW18DW 3839105.592 284652.784 11/4/2020 GW Tetrachloroethene 590 UG_L 4 10 5 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW18DW 3839105.592 284652.784 11/4/2020 GW Trichloroethene 90 UG_L 0.28 1 0.5 Y IR88-MW18DW 3839105.592 284652.784 11/4/2020 GW Vinyl chloride 0.052 J UG_L 0.017 0.1 0.05 Y IR88-MW18DW 3839105.592 284652.784 9/27/2021 GW cis-1,2-Dichloroethene 25 J UG_L 0.21 1 0.5 Y IR88-MW18DW 3839105.592 284652.784 9/27/2021 GW Tetrachloroethene 770 J UG_L 4 10 5 Y IR88-MW18DW 3839105.592 284652.784 9/27/2021 GW Trichloroethene 140 J UG_L 0.28 1 0.5 Y IR88-MW18DW 3839105.592 284652.784 9/27/2021 GW Vinyl chloride 0.057 J UG_L 0.017 0.1 0.05 Y IR88-MW18DW 3839105.592 284652.784 2/17/2022 GW cis-1,2-Dichloroethene 14 J UG_L 0.21 1 0.5 Y IR88-MW18DW 3839105.592 284652.784 2/17/2022 GW Tetrachloroethene 400 J UG_L 4 10 5 Y IR88-MW18DW 3839105.592 284652.784 2/17/2022 GW Trichloroethene 52 J UG_L 0.28 1 0.5 Y IR88-MW18DW 3839105.592 284652.784 2/17/2022 GW Vinyl chloride 0.05 UJ UG_L 0.017 0.1 0.05 N IR88-MW18DW 3839105.592 284652.784 8/22/2022 GW cis-1,2-Dichloroethene 590 UG_L 2.1 10 5 Y IR88-MW18DW 3839105.592 284652.784 8/22/2022 GW Tetrachloroethene 90 J UG_L 0.4 1 0.5 Y IR88-MW18DW 3839105.592 284652.784 8/22/2022 GW Trichloroethene 22 J UG_L 0.28 1 0.5 Y IR88-MW18DW 3839105.592 284652.784 8/22/2022 GW Vinyl chloride 9.5 UG_L 0.085 0.5 0.25 Y IR88-MW20IW 3839027.913 284231.263 10/26/2004 GW Alkalinity 200000 J- UG_L 5000 Y IR88-MW20IW 3839027.913 284231.263 10/26/2004 GW Benzene 10 U UG_L 10 N IR88-MW20IW 3839027.913 284231.263 10/26/2004 GW Chloride 13000 UG_L 2000 Y IR88-MW20IW 3839027.913 284231.263 10/26/2004 GW cis-1,2-Dichloroethene 6 J UG_L 10 Y IR88-MW20IW 3839027.913 284231.263 10/26/2004 GW Ethane 10 U UG_L 10 N IR88-MW20IW 3839027.913 284231.263 10/26/2004 GW Ethene 10 U UG_L 10 N IR88-MW20IW 3839027.913 284231.263 10/26/2004 GW Methane 18 UG_L 10 Y IR88-MW20IW 3839027.913 284231.263 10/26/2004 GW Nitrate 50 U UG_L 50 N IR88-MW20IW 3839027.913 284231.263 10/26/2004 GW Nitrite 50 U UG_L 50 N IR88-MW20IW 3839027.913 284231.263 10/26/2004 GW Tetrachloroethene 10 U UG_L 10 N IR88-MW20IW 3839027.913 284231.263 10/26/2004 GW Trichloroethene 10 U UG_L 10 N IR88-MW20IW 3839027.913 284231.263 10/26/2004 GW Vinyl chloride 10 U UG_L 10 N IR88-MW20IW 3839027.913 284231.263 10/26/2004 GW Sulfide 1000 U UG_L 1000 N IR88-MW20IW 3839027.913 284231.263 11/15/2005 GW Alkalinity 208000 UG_L 10000 Y IR88-MW20IW 3839027.913 284231.263 11/15/2005 GW Benzene 0.5 U UG_L 0.5 N IR88-MW20IW 3839027.913 284231.263 11/15/2005 GW Chloride 10900 UG_L 2000 Y IR88-MW20IW 3839027.913 284231.263 11/15/2005 GW cis-1,2-Dichloroethene 8.5 J UG_L 0.5 Y IR88-MW20IW 3839027.913 284231.263 11/15/2005 GW Ethane 2 U UG_L 2 N IR88-MW20IW 3839027.913 284231.263 11/15/2005 GW Ethene 2 U UG_L 2 N IR88-MW20IW 3839027.913 284231.263 11/15/2005 GW Ferric iron 400 U UG_L 400 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW20IW 3839027.913 284231.263 11/15/2005 GW Methane 1 U UG_L 1 N IR88-MW20IW 3839027.913 284231.263 11/15/2005 GW Nitrate 50 U UG_L 50 N IR88-MW20IW 3839027.913 284231.263 11/15/2005 GW Nitrite 50 U UG_L 50 N IR88-MW20IW 3839027.913 284231.263 11/15/2005 GW Tetrachloroethene 0.5 U UG_L 0.5 N IR88-MW20IW 3839027.913 284231.263 11/15/2005 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW20IW 3839027.913 284231.263 11/15/2005 GW Trichloroethene 0.93 UG_L 0.5 Y IR88-MW20IW 3839027.913 284231.263 11/15/2005 GW Vinyl chloride 0.5 U UG_L 0.5 N IR88-MW20IW 3839027.913 284231.263 8/8/2007 GW Alkalinity 217000 UG_L 10000 Y IR88-MW20IW 3839027.913 284231.263 8/8/2007 GW Benzene 0.5 U UG_L 0.5 N IR88-MW20IW 3839027.913 284231.263 8/8/2007 GW Chloride 32700 UG_L 2000 Y IR88-MW20IW 3839027.913 284231.263 8/8/2007 GW cis-1,2-Dichloroethene 16 UG_L 0.5 Y IR88-MW20IW 3839027.913 284231.263 8/8/2007 GW Ethane 2 U UG_L 2 N IR88-MW20IW 3839027.913 284231.263 8/8/2007 GW Ethene 2 U UG_L 2 N IR88-MW20IW 3839027.913 284231.263 8/8/2007 GW Ferric iron 400 U UG_L 400 N IR88-MW20IW 3839027.913 284231.263 8/8/2007 GW Ferrous iron 960 UG_L 400 Y IR88-MW20IW 3839027.913 284231.263 8/8/2007 GW Methane 6 UG_L 1 Y IR88-MW20IW 3839027.913 284231.263 8/8/2007 GW Nitrate 50 U UG_L 50 N IR88-MW20IW 3839027.913 284231.263 8/8/2007 GW Nitrite 50 U UG_L 50 N IR88-MW20IW 3839027.913 284231.263 8/8/2007 GW Tetrachloroethene 0.5 U UG_L 0.5 N IR88-MW20IW 3839027.913 284231.263 8/8/2007 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW20IW 3839027.913 284231.263 8/8/2007 GW Trichloroethene 4.5 UG_L 0.5 Y IR88-MW20IW 3839027.913 284231.263 8/8/2007 GW Vinyl chloride 0.5 U UG_L 0.5 N IR88-MW20IW 3839027.913 284231.263 10/7/2015 GW Benzene 0.5 U UG_L 0.25 1 0.5 N IR88-MW20IW 3839027.913 284231.263 10/7/2015 GW cis-1,2-Dichloroethene 28.7 UG_L 0.25 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 10/7/2015 GW Tetrachloroethene 30 UG_L 0.25 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 10/7/2015 GW Trichloroethene 28.9 UG_L 0.25 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 10/7/2015 GW Vinyl chloride 0.5 U UG_L 0.25 1 0.5 N IR88-MW20IW 3839027.913 284231.263 10/24/2016 GW Benzene 0.5 U UG_L 0.25 1 0.5 N IR88-MW20IW 3839027.913 284231.263 10/24/2016 GW cis-1,2-Dichloroethene 24.2 UG_L 0.25 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 10/24/2016 GW Tetrachloroethene 29.8 UG_L 0.25 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 10/24/2016 GW Trichloroethene 27.4 UG_L 0.25 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 10/24/2016 GW Vinyl chloride 0.5 U UG_L 0.25 1 0.5 N IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Alkalinity 318 MG_L 0.26 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW BAV1 R-Dase 0.5 U CELLS_ML 0.1 0.5 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Benzene 0.5 U UG_L 0.2 1 0.5 N IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Chloride 29.8 MG_L 2.5 10 5 Y IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW cis-1,2-Dichloroethene 92.4 J UG_L 0.2 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Dehalococcoides 12.2 CELLS_ML 0.1 0.5 Y IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Ethane 0.00022 U MG_L 0.00011 0.001 0.00022 N IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Ethene 0.00029 U MG_L 0.00015 0.001 0.00029 N IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Methane 4.74 MG_L 0.087 0.4 0.218 Y IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Naphthalene 0.5 U UG_L 0.2 5 0.5 N IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Nitrate 0.15 U MG_L 0.1 0.2 0.15 N IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Nitrite 0.15 U MG_L 0.1 0.2 0.15 N IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW TCE R-Dase 0.4 J CELLS_ML 0.1 0.5 Y IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Tetrachloroethene 43.8 J UG_L 0.2 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Total organic carbon (TOC) 5.53 MG_L 0.3 2 1 Y IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Trichloroethene 15.6 J UG_L 0.2 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW VC R-Dase 2.6 CELLS_ML 0.1 0.5 Y IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Vinyl chloride 0.5 U UG_L 0.2 1 0.5 N IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Sulfide 1.5 U MG_L 1.08 2 1.5 N IR88-MW20IW 3839027.913 284231.263 12/10/2019 GW Alkalinity 330 MG_L 0.23 5 4 Y IR88-MW20IW 3839027.913 284231.263 12/10/2019 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW20IW 3839027.913 284231.263 12/10/2019 GW Chloride 25 MG_L 0.99 20 10 Y IR88-MW20IW 3839027.913 284231.263 12/10/2019 GW cis-1,2-Dichloroethene 54 UG_L 0.21 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 12/10/2019 GW Dehalococcoides 5.1 CELLS_ML 0.05 0.3 Y IR88-MW20IW 3839027.913 284231.263 12/10/2019 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW20IW 3839027.913 284231.263 12/10/2019 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW20IW 3839027.913 284231.263 12/10/2019 GW Methane 6 MG_L 0.048 0.25 0.12 Y IR88-MW20IW 3839027.913 284231.263 12/10/2019 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW20IW 3839027.913 284231.263 12/10/2019 GW Tetrachloroethene 77 UG_L 0.4 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 12/10/2019 GW Total organic carbon (TOC) 1.3 MG_L 0.1 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 12/10/2019 GW Trichloroethene 12 UG_L 0.28 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 12/10/2019 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW20IW 3839027.913 284231.263 12/10/2019 GW Vinyl chloride 0.38 J UG_L 0.017 0.1 0.05 Y IR88-MW20IW 3839027.913 284231.263 12/10/2019 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW20IW 3839027.913 284231.263 4/16/2020 GW Alkalinity 320 MG_L 0.23 5 4 Y IR88-MW20IW 3839027.913 284231.263 4/16/2020 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW20IW 3839027.913 284231.263 4/16/2020 GW Chloride 25 MG_L 0.2 4 2 Y IR88-MW20IW 3839027.913 284231.263 4/16/2020 GW cis-1,2-Dichloroethene 47 UG_L 0.21 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 4/16/2020 GW Dehalococcoides 0.5 CELLS_ML 0.05 0.3 Y IR88-MW20IW 3839027.913 284231.263 4/16/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW20IW 3839027.913 284231.263 4/16/2020 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW20IW 3839027.913 284231.263 4/16/2020 GW Methane 6.1 MG_L 0.039 0.2 0.1 Y IR88-MW20IW 3839027.913 284231.263 4/16/2020 GW TCE R-Dase 0.2 J CELLS_ML 0.05 0.3 Y IR88-MW20IW 3839027.913 284231.263 4/16/2020 GW Tetrachloroethene 61 UG_L 0.4 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 4/16/2020 GW Total organic carbon (TOC) 1 MG_L 0.1 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 4/16/2020 GW Trichloroethene 12 UG_L 0.28 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 4/16/2020 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW20IW 3839027.913 284231.263 4/16/2020 GW Vinyl chloride 0.38 J UG_L 0.017 0.1 0.05 Y IR88-MW20IW 3839027.913 284231.263 4/16/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW20IW 3839027.913 284231.263 11/2/2020 GW Alkalinity 300 MG_L 0.23 5 4 Y IR88-MW20IW 3839027.913 284231.263 11/2/2020 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW20IW 3839027.913 284231.263 11/2/2020 GW Chloride 24 MG_L 0.2 4 2 Y IR88-MW20IW 3839027.913 284231.263 11/2/2020 GW cis-1,2-Dichloroethene 38 UG_L 0.21 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 11/2/2020 GW Dehalococcoides 9.7 CELLS_ML 0.05 0.3 Y IR88-MW20IW 3839027.913 284231.263 11/2/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW20IW 3839027.913 284231.263 11/2/2020 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW20IW 3839027.913 284231.263 11/2/2020 GW Methane 3.7 MG_L 0.019 0.1 0.05 Y IR88-MW20IW 3839027.913 284231.263 11/2/2020 GW TCE R-Dase 1.4 CELLS_ML 0.05 0.3 Y IR88-MW20IW 3839027.913 284231.263 11/2/2020 GW Tetrachloroethene 48 UG_L 0.4 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 11/2/2020 GW Total organic carbon (TOC) 0.83 J MG_L 0.1 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 11/2/2020 GW Trichloroethene 13 UG_L 0.28 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 11/2/2020 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW20IW 3839027.913 284231.263 11/2/2020 GW Vinyl chloride 0.54 J UG_L 0.017 0.1 0.05 Y IR88-MW20IW 3839027.913 284231.263 11/2/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW20IW 3839027.913 284231.263 9/16/2021 GW Alkalinity 320 MG_L 0.23 5 4 Y IR88-MW20IW 3839027.913 284231.263 9/16/2021 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW20IW 3839027.913 284231.263 9/16/2021 GW Chloride 22 MG_L 0.2 4 2 Y IR88-MW20IW 3839027.913 284231.263 9/16/2021 GW cis-1,2-Dichloroethene 20 UG_L 0.21 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 9/16/2021 GW Dehalococcoides 57.6 CELLS_ML 0.05 0.3 Y IR88-MW20IW 3839027.913 284231.263 9/16/2021 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW20IW 3839027.913 284231.263 9/16/2021 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW20IW 3839027.913 284231.263 9/16/2021 GW Methane 1.8 L MG_L 0.0097 0.05 0.025 Y IR88-MW20IW 3839027.913 284231.263 9/16/2021 GW Nitrate 0.07 MG_L 0.017 0.05 0.025 Y IR88-MW20IW 3839027.913 284231.263 9/16/2021 GW Nitrite 0.46 MG_L 0.0092 0.05 0.025 Y IR88-MW20IW 3839027.913 284231.263 9/16/2021 GW TCE R-Dase 2.6 CELLS_ML 0.05 0.3 Y IR88-MW20IW 3839027.913 284231.263 9/16/2021 GW Tetrachloroethene 35 UG_L 0.4 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 9/16/2021 GW Total organic carbon (TOC) 0.83 J MG_L 0.1 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 9/16/2021 GW Trichloroethene 14 UG_L 0.28 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 9/16/2021 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW20IW 3839027.913 284231.263 9/16/2021 GW Vinyl chloride 1.2 J UG_L 0.017 0.1 0.05 Y IR88-MW20IW 3839027.913 284231.263 9/16/2021 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW20IW 3839027.913 284231.263 2/24/2022 GW Alkalinity 300 MG_L 0.23 5 4 Y IR88-MW20IW 3839027.913 284231.263 2/24/2022 GW BAV1 R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW20IW 3839027.913 284231.263 2/24/2022 GW Chloride 22 MG_L 0.2 4 2 Y IR88-MW20IW 3839027.913 284231.263 2/24/2022 GW cis-1,2-Dichloroethene 14 UG_L 0.21 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 2/24/2022 GW Dehalococcoides 104 CELLS_ML 0.1 0.5 Y IR88-MW20IW 3839027.913 284231.263 2/24/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW20IW 3839027.913 284231.263 2/24/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW20IW 3839027.913 284231.263 2/24/2022 GW Methane 1.2 MG_L 0.0097 0.05 0.025 Y IR88-MW20IW 3839027.913 284231.263 2/24/2022 GW Nitrate 0.04 J MG_L 0.017 0.05 0.025 Y IR88-MW20IW 3839027.913 284231.263 2/24/2022 GW Nitrite 0.48 MG_L 0.0092 0.05 0.025 Y IR88-MW20IW 3839027.913 284231.263 2/24/2022 GW TCE R-Dase 20.9 CELLS_ML 0.1 0.5 Y IR88-MW20IW 3839027.913 284231.263 2/24/2022 GW Tetrachloroethene 38 UG_L 0.4 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 2/24/2022 GW Total organic carbon (TOC) 0.77 J MG_L 0.1 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 2/24/2022 GW Trichloroethene 15 UG_L 0.28 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 2/24/2022 GW VC R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW20IW 3839027.913 284231.263 2/24/2022 GW Vinyl chloride 0.65 J UG_L 0.017 0.1 0.05 Y IR88-MW20IW 3839027.913 284231.263 2/24/2022 GW Sulfide 2.2 MG_L 0.69 1 0.8 Y IR88-MW20IW 3839027.913 284231.263 8/18/2022 GW Alkalinity 300 MG_L 0.23 5 4 Y IR88-MW20IW 3839027.913 284231.263 8/18/2022 GW Chloride 21 MG_L 0.2 4 2 Y IR88-MW20IW 3839027.913 284231.263 8/18/2022 GW cis-1,2-Dichloroethene 12 J UG_L 0.21 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 8/18/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW20IW 3839027.913 284231.263 8/18/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW20IW 3839027.913 284231.263 8/18/2022 GW Methane 1.2 MG_L 0.0019 0.01 0.005 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW20IW 3839027.913 284231.263 8/18/2022 GW Nitrate 0.039 J MG_L 0.017 0.05 0.025 Y IR88-MW20IW 3839027.913 284231.263 8/18/2022 GW Nitrite 0.45 MG_L 0.0092 0.05 0.025 Y IR88-MW20IW 3839027.913 284231.263 8/18/2022 GW Tetrachloroethene 30 J UG_L 0.4 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 8/18/2022 GW Total organic carbon (TOC) 1 MG_L 0.37 1 0.75 Y IR88-MW20IW 3839027.913 284231.263 8/18/2022 GW Trichloroethene 15 J UG_L 0.28 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 8/18/2022 GW Vinyl chloride 0.34 J UG_L 0.017 0.1 0.05 Y IR88-MW20IW 3839027.913 284231.263 8/18/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW20IW 3839027.913 284231.263 10/7/2015 GW Benzene 0.5 U UG_L 0.25 1 0.5 N IR88-MW20IW 3839027.913 284231.263 10/7/2015 GW cis-1,2-Dichloroethene 29.8 UG_L 0.25 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 10/7/2015 GW Tetrachloroethene 32.7 UG_L 0.25 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 10/7/2015 GW Trichloroethene 31.1 UG_L 0.25 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 10/7/2015 GW Vinyl chloride 0.5 U UG_L 0.25 1 0.5 N IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Benzene 0.5 U UG_L 0.2 1 0.5 N IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW cis-1,2-Dichloroethene 82 J UG_L 0.2 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Naphthalene 0.5 U UG_L 0.2 5 0.5 N IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Tetrachloroethene 50.3 J UG_L 0.2 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Trichloroethene 14.9 J UG_L 0.2 1 0.5 Y IR88-MW20IW 3839027.913 284231.263 1/30/2019 GW Vinyl chloride 0.5 U UG_L 0.2 1 0.5 N IR88-MW21IW 3839100.276 284320.874 10/25/2004 GW Alkalinity 220000 J- UG_L 5000 Y IR88-MW21IW 3839100.276 284320.874 10/25/2004 GW Benzene 10 U UG_L 10 N IR88-MW21IW 3839100.276 284320.874 10/25/2004 GW Chloride 15000 UG_L 2000 Y IR88-MW21IW 3839100.276 284320.874 10/25/2004 GW cis-1,2-Dichloroethene 3 J UG_L 10 Y IR88-MW21IW 3839100.276 284320.874 10/25/2004 GW Ethane 10 U UG_L 10 N IR88-MW21IW 3839100.276 284320.874 10/25/2004 GW Ethene 10 U UG_L 10 N IR88-MW21IW 3839100.276 284320.874 10/25/2004 GW Methane 19 UG_L 10 Y IR88-MW21IW 3839100.276 284320.874 10/25/2004 GW Nitrate 50 U UG_L 50 N IR88-MW21IW 3839100.276 284320.874 10/25/2004 GW Nitrite 50 U UG_L 50 N IR88-MW21IW 3839100.276 284320.874 10/25/2004 GW Tetrachloroethene 10 U UG_L 10 N IR88-MW21IW 3839100.276 284320.874 10/25/2004 GW Trichloroethene 10 U UG_L 10 N IR88-MW21IW 3839100.276 284320.874 10/25/2004 GW Vinyl chloride 10 U UG_L 10 N IR88-MW21IW 3839100.276 284320.874 10/25/2004 GW Sulfide 400 J UG_L 1000 Y IR88-MW21IW 3839100.276 284320.874 11/20/2005 GW Alkalinity 217000 UG_L 10000 Y IR88-MW21IW 3839100.276 284320.874 11/20/2005 GW Benzene 0.5 U UG_L 0.5 N IR88-MW21IW 3839100.276 284320.874 11/20/2005 GW Chloride 12100 UG_L 2000 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW21IW 3839100.276 284320.874 11/20/2005 GW cis-1,2-Dichloroethene 2.6 UG_L 0.5 Y IR88-MW21IW 3839100.276 284320.874 11/20/2005 GW Ethane 1 U UG_L 2 N IR88-MW21IW 3839100.276 284320.874 11/20/2005 GW Ethene 1 U UG_L 2 N IR88-MW21IW 3839100.276 284320.874 11/20/2005 GW Ferric iron 400 U UG_L 400 N IR88-MW21IW 3839100.276 284320.874 11/20/2005 GW Methane 2 U UG_L 1 N IR88-MW21IW 3839100.276 284320.874 11/20/2005 GW Nitrate 50 U UG_L 50 N IR88-MW21IW 3839100.276 284320.874 11/20/2005 GW Nitrite 50 U UG_L 50 N IR88-MW21IW 3839100.276 284320.874 11/20/2005 GW Tetrachloroethene 0.5 U UG_L 0.5 N IR88-MW21IW 3839100.276 284320.874 11/20/2005 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW21IW 3839100.276 284320.874 11/20/2005 GW Trichloroethene 0.81 UG_L 0.5 Y IR88-MW21IW 3839100.276 284320.874 11/20/2005 GW Vinyl chloride 0.5 U UG_L 0.5 N IR88-MW21IW 3839100.276 284320.874 11/20/2005 GW Sulfide 1000 U UG_L 1000 N IR88-MW21IW 3839100.276 284320.874 8/12/2007 GW Alkalinity 216000 UG_L 10000 Y IR88-MW21IW 3839100.276 284320.874 8/12/2007 GW Benzene 0.5 U UG_L 0.5 N IR88-MW21IW 3839100.276 284320.874 8/12/2007 GW Chloride 15200 UG_L 2000 Y IR88-MW21IW 3839100.276 284320.874 8/12/2007 GW cis-1,2-Dichloroethene 1.4 UG_L 0.5 Y IR88-MW21IW 3839100.276 284320.874 8/12/2007 GW Ethane 2 U UG_L 2 N IR88-MW21IW 3839100.276 284320.874 8/12/2007 GW Ethene 2 U UG_L 2 N IR88-MW21IW 3839100.276 284320.874 8/12/2007 GW Ferric iron 400 U UG_L 400 N IR88-MW21IW 3839100.276 284320.874 8/12/2007 GW Ferrous iron 750 UG_L 400 Y IR88-MW21IW 3839100.276 284320.874 8/12/2007 GW Methane 1 U UG_L 1 N IR88-MW21IW 3839100.276 284320.874 8/12/2007 GW Nitrate 50 U UG_L 50 N IR88-MW21IW 3839100.276 284320.874 8/12/2007 GW Nitrite 50 U UG_L 50 N IR88-MW21IW 3839100.276 284320.874 8/12/2007 GW Tetrachloroethene 0.11 J UG_L 0.5 Y IR88-MW21IW 3839100.276 284320.874 8/12/2007 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW21IW 3839100.276 284320.874 8/12/2007 GW Trichloroethene 0.6 UG_L 0.5 Y IR88-MW21IW 3839100.276 284320.874 8/12/2007 GW Vinyl chloride 0.5 U UG_L 0.5 N IR88-MW21IW 3839100.276 284320.874 10/15/2011 GW Benzene 0.5 U UG_L 0.25 1 0.5 N IR88-MW21IW 3839100.276 284320.874 10/15/2011 GW cis-1,2-Dichloroethene 4.05 UG_L 0.25 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 10/15/2011 GW Tetrachloroethene 0.5 U UG_L 0.25 1 0.5 N IR88-MW21IW 3839100.276 284320.874 10/15/2011 GW Trichloroethene 1.27 UG_L 0.25 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 10/15/2011 GW Vinyl chloride 0.5 U UG_L 0.25 1 0.5 N IR88-MW21IW 3839100.276 284320.874 10/22/2014 GW Benzene 0.5 U UG_L 0.25 1 0.5 N IR88-MW21IW 3839100.276 284320.874 10/22/2014 GW cis-1,2-Dichloroethene 5.38 UG_L 0.25 1 0.5 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW21IW 3839100.276 284320.874 10/22/2014 GW Naphthalene 0.5 U UG_L 0.25 1 0.5 N IR88-MW21IW 3839100.276 284320.874 10/22/2014 GW Tetrachloroethene 2.31 UG_L 0.25 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 10/22/2014 GW Trichloroethene 8.91 UG_L 0.25 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 10/22/2014 GW Vinyl chloride 0.5 U UG_L 0.25 1 0.5 N IR88-MW21IW 3839100.276 284320.874 2/5/2019 GW Benzene 0.5 U UG_L 0.2 1 0.5 N IR88-MW21IW 3839100.276 284320.874 2/5/2019 GW cis-1,2-Dichloroethene 15 UG_L 0.2 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 2/5/2019 GW Naphthalene 0.5 U UG_L 0.2 5 0.5 N IR88-MW21IW 3839100.276 284320.874 2/5/2019 GW Tetrachloroethene 35.7 UG_L 0.2 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 2/5/2019 GW Trichloroethene 33.6 UG_L 0.2 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 2/5/2019 GW Vinyl chloride 0.5 U UG_L 0.2 1 0.5 N IR88-MW21IW 3839100.276 284320.874 12/3/2019 GW cis-1,2-Dichloroethene 14 UG_L 0.21 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 12/3/2019 GW Tetrachloroethene 100 UG_L 0.4 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 12/3/2019 GW Trichloroethene 54 UG_L 0.28 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 12/3/2019 GW Vinyl chloride 0.11 J UG_L 0.017 0.1 0.05 Y IR88-MW21IW 3839100.276 284320.874 4/16/2020 GW cis-1,2-Dichloroethene 8.5 UG_L 0.21 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 4/16/2020 GW Tetrachloroethene 18 UG_L 0.4 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 4/16/2020 GW Trichloroethene 7 UG_L 0.28 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 4/16/2020 GW Vinyl chloride 0.05 UJ UG_L 0.017 0.1 0.05 N IR88-MW21IW 3839100.276 284320.874 11/6/2020 GW cis-1,2-Dichloroethene 6.6 UG_L 0.21 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 11/6/2020 GW Tetrachloroethene 14 UG_L 0.4 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 11/6/2020 GW Trichloroethene 9.8 UG_L 0.28 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 11/6/2020 GW Vinyl chloride 0.05 UJ UG_L 0.017 0.1 0.05 N IR88-MW21IW 3839100.276 284320.874 9/13/2021 GW cis-1,2-Dichloroethene 43 UG_L 0.21 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 9/13/2021 GW Tetrachloroethene 42 UG_L 0.4 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 9/13/2021 GW Trichloroethene 31 UG_L 0.28 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 9/13/2021 GW Vinyl chloride 0.049 J UG_L 0.017 0.1 0.05 Y IR88-MW21IW 3839100.276 284320.874 2/15/2022 GW cis-1,2-Dichloroethene 60 J UG_L 0.21 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 2/15/2022 GW Tetrachloroethene 50 J UG_L 0.4 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 2/15/2022 GW Trichloroethene 41 J UG_L 0.28 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 2/15/2022 GW Vinyl chloride 0.025 J UG_L 0.017 0.1 0.05 Y IR88-MW21IW 3839100.276 284320.874 8/26/2022 GW cis-1,2-Dichloroethene 14 UG_L 0.21 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 8/26/2022 GW Tetrachloroethene 14 UG_L 0.4 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 8/26/2022 GW Trichloroethene 9.9 UG_L 0.28 1 0.5 Y IR88-MW21IW 3839100.276 284320.874 8/26/2022 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW22IW 3839043.193 284318.276 10/26/2004 GW Alkalinity 260000 J- UG_L 5000 Y IR88-MW22IW 3839043.193 284318.276 10/26/2004 GW Benzene 10 U UG_L 10 N IR88-MW22IW 3839043.193 284318.276 10/26/2004 GW Chloride 15000 UG_L 2000 Y IR88-MW22IW 3839043.193 284318.276 10/26/2004 GW cis-1,2-Dichloroethene 18 UG_L 10 Y IR88-MW22IW 3839043.193 284318.276 10/26/2004 GW Ethane 10 U UG_L 10 N IR88-MW22IW 3839043.193 284318.276 10/26/2004 GW Ethene 10 U UG_L 10 N IR88-MW22IW 3839043.193 284318.276 10/26/2004 GW Methane 83 UG_L 10 Y IR88-MW22IW 3839043.193 284318.276 10/26/2004 GW Nitrate 50 U UG_L 50 N IR88-MW22IW 3839043.193 284318.276 10/26/2004 GW Nitrite 6.2 J UG_L 50 Y IR88-MW22IW 3839043.193 284318.276 10/26/2004 GW Tetrachloroethene 200 UG_L 20 Y IR88-MW22IW 3839043.193 284318.276 10/26/2004 GW Trichloroethene 31 UG_L 10 Y IR88-MW22IW 3839043.193 284318.276 10/26/2004 GW Vinyl chloride 10 U UG_L 10 N IR88-MW22IW 3839043.193 284318.276 10/26/2004 GW Sulfide 1900 UG_L 1000 Y IR88-MW22IW 3839043.193 284318.276 11/18/2005 GW Alkalinity 278000 UG_L 10000 Y IR88-MW22IW 3839043.193 284318.276 11/18/2005 GW Benzene 13 U UG_L 13 N IR88-MW22IW 3839043.193 284318.276 11/18/2005 GW Chloride 12900 UG_L 2000 Y IR88-MW22IW 3839043.193 284318.276 11/18/2005 GW cis-1,2-Dichloroethene 20 UG_L 13 Y IR88-MW22IW 3839043.193 284318.276 11/18/2005 GW Ethane 2 U UG_L 2 N IR88-MW22IW 3839043.193 284318.276 11/18/2005 GW Ethene 2 U UG_L 2 N IR88-MW22IW 3839043.193 284318.276 11/18/2005 GW Ferric iron 400 U UG_L 400 N IR88-MW22IW 3839043.193 284318.276 11/18/2005 GW Methane 27 J UG_L 1 Y IR88-MW22IW 3839043.193 284318.276 11/18/2005 GW Nitrate 50 U UG_L 50 N IR88-MW22IW 3839043.193 284318.276 11/18/2005 GW Nitrite 50 U UG_L 50 N IR88-MW22IW 3839043.193 284318.276 11/18/2005 GW Tetrachloroethene 160 UG_L 13 Y IR88-MW22IW 3839043.193 284318.276 11/18/2005 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW22IW 3839043.193 284318.276 11/18/2005 GW Trichloroethene 31 UG_L 13 Y IR88-MW22IW 3839043.193 284318.276 11/18/2005 GW Vinyl chloride 13 U UG_L 13 N IR88-MW22IW 3839043.193 284318.276 11/18/2005 GW Sulfide 1000 U UG_L 1000 N IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Alkalinity 267000 UG_L 10000 Y IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Benzene 2.5 U UG_L 2.5 N IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Chloride 17500 UG_L 2000 Y IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW cis-1,2-Dichloroethene 39 UG_L 2.5 Y IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Ethane 0.05 J UG_L 2 Y IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Ethene 2 U UG_L 2 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Ferric iron 160 J UG_L 400 Y IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Ferrous iron 2640 UG_L 400 Y IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Methane 23 UG_L 1 Y IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Nitrate 50 U UG_L 50 N IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Nitrite 50 U UG_L 50 N IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Tetrachloroethene 130 UG_L 6.3 Y IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Trichloroethene 55 UG_L 2.5 Y IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Vinyl chloride 2.5 U UG_L 2.5 N IR88-MW22IW 3839043.193 284318.276 9/30/2009 GW Benzene 8.3 U UG_L 1.7 8.3 N IR88-MW22IW 3839043.193 284318.276 9/30/2009 GW cis-1,2-Dichloroethene 64 UG_L 1.7 8.3 Y IR88-MW22IW 3839043.193 284318.276 9/30/2009 GW Tetrachloroethene 320 UG_L 1.8 8.3 Y IR88-MW22IW 3839043.193 284318.276 9/30/2009 GW Trichloroethene 92 UG_L 1.7 8.3 Y IR88-MW22IW 3839043.193 284318.276 9/30/2009 GW Vinyl chloride 8.3 U UG_L 1.7 8.3 N IR88-MW22IW 3839043.193 284318.276 10/5/2010 GW Benzene 1.25 U UG_L 0.625 2.5 N IR88-MW22IW 3839043.193 284318.276 10/5/2010 GW cis-1,2-Dichloroethene 60.2 D UG_L 0.625 2.5 Y IR88-MW22IW 3839043.193 284318.276 10/5/2010 GW Dehalobacter 4930 GC_ML 0.1 1 Y IR88-MW22IW 3839043.193 284318.276 10/5/2010 GW Dehalococcoides 7.1 GC_ML 0.1 0.5 Y IR88-MW22IW 3839043.193 284318.276 10/5/2010 GW Desulfuromonas 1 U GC_ML 0.1 1 N IR88-MW22IW 3839043.193 284318.276 10/5/2010 GW Methane Oxidizing Bacteria 13 GC_ML 0.1 1 Y IR88-MW22IW 3839043.193 284318.276 10/5/2010 GW Tetrachloroethene 302 D UG_L 0.625 2.5 Y IR88-MW22IW 3839043.193 284318.276 10/5/2010 GW Toluene Dioxygenase 1 U GC_ML 0.1 1 N IR88-MW22IW 3839043.193 284318.276 10/5/2010 GW Total organic carbon (TOC) 968 J UG_L 0.25 1000 Y IR88-MW22IW 3839043.193 284318.276 10/5/2010 GW Trichloroethene 106 D UG_L 0.625 2.5 Y IR88-MW22IW 3839043.193 284318.276 10/5/2010 GW Vinyl chloride 1.25 U UG_L 0.625 2.5 N IR88-MW22IW 3839043.193 284318.276 1/18/2011 GW Benzene 2.5 U UG_L 1.25 5 N IR88-MW22IW 3839043.193 284318.276 1/18/2011 GW cis-1,2-Dichloroethene 121 D UG_L 1.25 5 Y IR88-MW22IW 3839043.193 284318.276 1/18/2011 GW Dehalobacter 13000000 GC_ML 0.1 1 Y IR88-MW22IW 3839043.193 284318.276 1/18/2011 GW Dehalococcoides 44.9 GC_ML 0.1 1 Y IR88-MW22IW 3839043.193 284318.276 1/18/2011 GW Desulfuromonas 149000 GC_ML 0.1 1 Y IR88-MW22IW 3839043.193 284318.276 1/18/2011 GW Methane Oxidizing Bacteria 158000 GC_ML 0.1 1 Y IR88-MW22IW 3839043.193 284318.276 1/18/2011 GW Tetrachloroethene 280 D UG_L 1.25 5 Y IR88-MW22IW 3839043.193 284318.276 1/18/2011 GW Toluene Dioxygenase 1860 GC_ML 0.1 1 Y IR88-MW22IW 3839043.193 284318.276 1/18/2011 GW Total organic carbon (TOC) 4840 UG_L 0.25 1000 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW22IW 3839043.193 284318.276 1/18/2011 GW Trichloroethene 111 D UG_L 1.25 5 Y IR88-MW22IW 3839043.193 284318.276 1/18/2011 GW Vinyl chloride 2.5 U UG_L 1.25 5 N IR88-MW22IW 3839043.193 284318.276 4/6/2011 GW Benzene 1 U UG_L 0.5 2 1 N IR88-MW22IW 3839043.193 284318.276 4/6/2011 GW Benzyl Succinante Synthase 1 U GC_ML 0.1 1 N IR88-MW22IW 3839043.193 284318.276 4/6/2011 GW cis-1,2-Dichloroethene 82.1 D UG_L 0.5 2 1 Y IR88-MW22IW 3839043.193 284318.276 4/6/2011 GW Dehalobacter 2300000 GC_ML 0.1 1 Y IR88-MW22IW 3839043.193 284318.276 4/6/2011 GW Dehalococcoides 34.6 GC_ML 0.1 1 Y IR88-MW22IW 3839043.193 284318.276 4/6/2011 GW Desulfuromonas 50100 GC_ML 0.1 1 Y IR88-MW22IW 3839043.193 284318.276 4/6/2011 GW Methane Oxidizing Bacteria 67.3 GC_ML 0.1 1 Y IR88-MW22IW 3839043.193 284318.276 4/6/2011 GW Tetrachloroethene 287 D UG_L 0.5 2 1 Y IR88-MW22IW 3839043.193 284318.276 4/6/2011 GW Total organic carbon (TOC) 1060 UG_L 0.25 1000 0.5 Y IR88-MW22IW 3839043.193 284318.276 4/6/2011 GW Trichloroethene 121 D UG_L 0.5 2 1 Y IR88-MW22IW 3839043.193 284318.276 4/6/2011 GW Vinyl chloride 1 U UG_L 0.5 2 1 N IR88-MW22IW 3839043.193 284318.276 7/6/2011 GW Benzene 2.5 U UG_L 1.25 5 2.5 N IR88-MW22IW 3839043.193 284318.276 7/6/2011 GW cis-1,2-Dichloroethene 89.1 D UG_L 1.25 5 2.5 Y IR88-MW22IW 3839043.193 284318.276 7/6/2011 GW Dehalobacter 46100 GC_ML 0.1 1 Y IR88-MW22IW 3839043.193 284318.276 7/6/2011 GW Dehalococcoides 0.7 GC_ML 0.1 1 Y IR88-MW22IW 3839043.193 284318.276 7/6/2011 GW Desulfuromonas 103000 GC_ML 0.1 1 Y IR88-MW22IW 3839043.193 284318.276 7/6/2011 GW Methane Oxidizing Bacteria 12800000 GC_ML 0.1 1 Y IR88-MW22IW 3839043.193 284318.276 7/6/2011 GW Tetrachloroethene 208 D UG_L 1.25 5 2.5 Y IR88-MW22IW 3839043.193 284318.276 7/6/2011 GW Toluene Dioxygenase 33600 GC_ML 0.1 1 Y IR88-MW22IW 3839043.193 284318.276 7/6/2011 GW Trichloroethene 102 D UG_L 1.25 5 2.5 Y IR88-MW22IW 3839043.193 284318.276 7/6/2011 GW Vinyl chloride 2.5 U UG_L 1.25 5 2.5 N IR88-MW22IW 3839043.193 284318.276 10/11/2011 GW Benzene 2.5 U UG_L 1.25 5 2.5 N IR88-MW22IW 3839043.193 284318.276 10/11/2011 GW cis-1,2-Dichloroethene 58 UG_L 1.25 5 2.5 Y IR88-MW22IW 3839043.193 284318.276 10/11/2011 GW Dehalobacter 183000 GC_ML 0.1 3 Y IR88-MW22IW 3839043.193 284318.276 10/11/2011 GW Dehalococcoides 33500 GC_ML 0.1 0.5 Y IR88-MW22IW 3839043.193 284318.276 10/11/2011 GW Desulfuromonas 32200 GC_ML 0.1 1 Y IR88-MW22IW 3839043.193 284318.276 10/11/2011 GW Methane Oxidizing Bacteria 2470000 GC_ML 0.1 1 Y IR88-MW22IW 3839043.193 284318.276 10/11/2011 GW Tetrachloroethene 229 U UG_L 1.25 5 2.5 N IR88-MW22IW 3839043.193 284318.276 10/11/2011 GW Toluene Dioxygenase 1 U GC_ML 0.1 1 N IR88-MW22IW 3839043.193 284318.276 10/11/2011 GW Total organic carbon (TOC) 961 J UG_L 0.25 1000 0.5 Y IR88-MW22IW 3839043.193 284318.276 10/11/2011 GW Trichloroethene 105 UG_L 1.25 5 2.5 Y IR88-MW22IW 3839043.193 284318.276 10/11/2011 GW Vinyl chloride 2.5 U UG_L 1.25 5 2.5 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW22IW 3839043.193 284318.276 10/22/2014 GW Benzene 1 U UG_L 0.5 2 1 N IR88-MW22IW 3839043.193 284318.276 10/22/2014 GW cis-1,2-Dichloroethene 38.5 UG_L 0.5 2 1 Y IR88-MW22IW 3839043.193 284318.276 10/22/2014 GW Naphthalene 1 U UG_L 0.5 2 1 N IR88-MW22IW 3839043.193 284318.276 10/22/2014 GW Tetrachloroethene 268 UG_L 0.5 2 1 Y IR88-MW22IW 3839043.193 284318.276 10/22/2014 GW Trichloroethene 135 UG_L 0.5 2 1 Y IR88-MW22IW 3839043.193 284318.276 10/22/2014 GW Vinyl chloride 0.596 J UG_L 0.5 2 1 Y IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW Alkalinity 335 MG_L 0.26 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW BAV1 R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW Benzene 0.5 U UG_L 0.2 1 0.5 N IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW Chloride 27.2 MG_L 2.5 10 5 Y IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW cis-1,2-Dichloroethene 34.2 J UG_L 0.2 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW Dehalococcoides 590 CELLS_ML 0.1 0.5 Y IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW Ethane 0.00022 U MG_L 0.00011 0.001 0.00022 N IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW Ethene 0.00029 U MG_L 0.00015 0.001 0.00029 N IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW Methane 0.0376 MG_L 0.000435 0.002 0.00109 Y IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW Naphthalene 0.5 U UG_L 0.2 5 0.5 N IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW Nitrate 0.15 U MG_L 0.1 0.2 0.15 N IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW Nitrite 0.15 U MG_L 0.1 0.2 0.15 N IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW TCE R-Dase 134 CELLS_ML 0.1 0.5 Y IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW Tetrachloroethene 91.8 J UG_L 0.2 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW Total organic carbon (TOC) 1.65 J MG_L 0.3 2 1 Y IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW Trichloroethene 157 J UG_L 0.2 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW VC R-Dase 120 CELLS_ML 0.1 0.5 Y IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW Vinyl chloride 0.5 U UG_L 0.2 1 0.5 N IR88-MW22IW 3839043.193 284318.276 1/30/2019 GW Sulfide 1.5 U MG_L 1.08 2 1.5 N IR88-MW22IW 3839043.193 284318.276 12/10/2019 GW Alkalinity 460 MG_L 0.23 5 4 Y IR88-MW22IW 3839043.193 284318.276 12/10/2019 GW BAV1 R-Dase 1.2 U CELLS_ML 0.2 1.2 N IR88-MW22IW 3839043.193 284318.276 12/10/2019 GW Chloride 21 MG_L 0.99 20 10 Y IR88-MW22IW 3839043.193 284318.276 12/10/2019 GW cis-1,2-Dichloroethene 75 UG_L 0.21 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 12/10/2019 GW Dehalococcoides 7030 CELLS_ML 0.2 1.2 Y IR88-MW22IW 3839043.193 284318.276 12/10/2019 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW22IW 3839043.193 284318.276 12/10/2019 GW Ethene 0.024 MG_L 0.002 0.01 0.005 Y IR88-MW22IW 3839043.193 284318.276 12/10/2019 GW Methane 5.3 MG_L 0.048 0.25 0.12 Y IR88-MW22IW 3839043.193 284318.276 12/10/2019 GW TCE R-Dase 280 CELLS_ML 0.2 1.2 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW22IW 3839043.193 284318.276 12/10/2019 GW Tetrachloroethene 20 UG_L 0.4 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 12/10/2019 GW Total organic carbon (TOC) 36 MG_L 0.1 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 12/10/2019 GW Trichloroethene 38 UG_L 0.28 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 12/10/2019 GW VC R-Dase 741 CELLS_ML 0.2 1.2 Y IR88-MW22IW 3839043.193 284318.276 12/10/2019 GW Vinyl chloride 67 UG_L 1.7 10 5 Y IR88-MW22IW 3839043.193 284318.276 12/10/2019 GW Sulfide 1.5 MG_L 0.69 1 0.8 Y IR88-MW22IW 3839043.193 284318.276 4/15/2020 GW Alkalinity 420 MG_L 0.23 5 4 Y IR88-MW22IW 3839043.193 284318.276 4/15/2020 GW BAV1 R-Dase 0.4 U CELLS_ML 0.08 0.4 N IR88-MW22IW 3839043.193 284318.276 4/15/2020 GW Chloride 21 MG_L 0.2 4 2 Y IR88-MW22IW 3839043.193 284318.276 4/15/2020 GW cis-1,2-Dichloroethene 69 UG_L 0.21 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 4/15/2020 GW Dehalococcoides 24400 CELLS_ML 0.08 0.4 Y IR88-MW22IW 3839043.193 284318.276 4/15/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW22IW 3839043.193 284318.276 4/15/2020 GW Ethene 0.02 MG_L 0.002 0.01 0.005 Y IR88-MW22IW 3839043.193 284318.276 4/15/2020 GW Methane 6 MG_L 0.039 0.2 0.1 Y IR88-MW22IW 3839043.193 284318.276 4/15/2020 GW TCE R-Dase 2520 CELLS_ML 0.08 0.4 Y IR88-MW22IW 3839043.193 284318.276 4/15/2020 GW Tetrachloroethene 43 UG_L 0.4 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 4/15/2020 GW Total organic carbon (TOC) 20 MG_L 0.1 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 4/15/2020 GW Trichloroethene 96 UG_L 0.28 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 4/15/2020 GW VC R-Dase 2160 CELLS_ML 0.08 0.4 Y IR88-MW22IW 3839043.193 284318.276 4/15/2020 GW Vinyl chloride 87 UG_L 0.25 2 1 Y IR88-MW22IW 3839043.193 284318.276 4/15/2020 GW Sulfide 2.4 MG_L 0.69 1 0.8 Y IR88-MW22IW 3839043.193 284318.276 11/2/2020 GW Alkalinity 380 MG_L 0.23 5 4 Y IR88-MW22IW 3839043.193 284318.276 11/2/2020 GW BAV1 R-Dase 0.4 U CELLS_ML 0.071 0.4 N IR88-MW22IW 3839043.193 284318.276 11/2/2020 GW Chloride 20 MG_L 0.2 4 2 Y IR88-MW22IW 3839043.193 284318.276 11/2/2020 GW cis-1,2-Dichloroethene 69 UG_L 0.21 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 11/2/2020 GW Dehalococcoides 2120 CELLS_ML 0.071 0.4 Y IR88-MW22IW 3839043.193 284318.276 11/2/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW22IW 3839043.193 284318.276 11/2/2020 GW Ethene 0.0059 J MG_L 0.002 0.01 0.005 Y IR88-MW22IW 3839043.193 284318.276 11/2/2020 GW Methane 6.6 MG_L 0.048 0.25 0.12 Y IR88-MW22IW 3839043.193 284318.276 11/2/2020 GW TCE R-Dase 330 CELLS_ML 0.071 0.4 Y IR88-MW22IW 3839043.193 284318.276 11/2/2020 GW Tetrachloroethene 39 UG_L 0.4 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 11/2/2020 GW Total organic carbon (TOC) 4.1 MG_L 0.1 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 11/2/2020 GW Trichloroethene 140 UG_L 0.56 2 1 Y IR88-MW22IW 3839043.193 284318.276 11/2/2020 GW VC R-Dase 215 CELLS_ML 0.071 0.4 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW22IW 3839043.193 284318.276 11/2/2020 GW Vinyl chloride 60 UG_L 0.25 2 1 Y IR88-MW22IW 3839043.193 284318.276 11/2/2020 GW Sulfide 0.97 J MG_L 0.69 1 0.8 Y IR88-MW22IW 3839043.193 284318.276 9/21/2021 GW Alkalinity 430 MG_L 0.23 5 4 Y IR88-MW22IW 3839043.193 284318.276 9/21/2021 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW22IW 3839043.193 284318.276 9/21/2021 GW Chloride 20 MG_L 0.099 2 1 Y IR88-MW22IW 3839043.193 284318.276 9/21/2021 GW cis-1,2-Dichloroethene 71 UG_L 0.21 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 9/21/2021 GW Dehalococcoides 16200 CELLS_ML 0.05 0.3 Y IR88-MW22IW 3839043.193 284318.276 9/21/2021 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW22IW 3839043.193 284318.276 9/21/2021 GW Ethene 0.014 MG_L 0.002 0.01 0.005 Y IR88-MW22IW 3839043.193 284318.276 9/21/2021 GW Methane 9.4 MG_L 0.039 0.2 0.1 Y IR88-MW22IW 3839043.193 284318.276 9/21/2021 GW Nitrate 0.025 U MG_L 0.015 0.05 0.025 N IR88-MW22IW 3839043.193 284318.276 9/21/2021 GW Nitrite 0.025 U MG_L 0.0032 0.05 0.025 N IR88-MW22IW 3839043.193 284318.276 9/21/2021 GW TCE R-Dase 1240 CELLS_ML 0.05 0.3 Y IR88-MW22IW 3839043.193 284318.276 9/21/2021 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW22IW 3839043.193 284318.276 9/21/2021 GW Total organic carbon (TOC) 16 MG_L 0.1 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 9/21/2021 GW Trichloroethene 11 UG_L 0.28 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 9/21/2021 GW VC R-Dase 1220 CELLS_ML 0.05 0.3 Y IR88-MW22IW 3839043.193 284318.276 9/21/2021 GW Vinyl chloride 60 UG_L 0.25 2 1 Y IR88-MW22IW 3839043.193 284318.276 9/21/2021 GW Sulfide 1.3 MG_L 0.69 1 0.8 Y IR88-MW22IW 3839043.193 284318.276 2/25/2022 GW Alkalinity 420 MG_L 0.23 5 4 Y IR88-MW22IW 3839043.193 284318.276 2/25/2022 GW BAV1 R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW22IW 3839043.193 284318.276 2/25/2022 GW Chloride 19 MG_L 0.099 2 1 Y IR88-MW22IW 3839043.193 284318.276 2/25/2022 GW cis-1,2-Dichloroethene 93 J UG_L 0.21 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 2/25/2022 GW Dehalococcoides 4080 CELLS_ML 0.1 0.5 Y IR88-MW22IW 3839043.193 284318.276 2/25/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW22IW 3839043.193 284318.276 2/25/2022 GW Ethene 0.0033 J MG_L 0.002 0.01 0.005 Y IR88-MW22IW 3839043.193 284318.276 2/25/2022 GW Methane 7.9 MG_L 0.039 0.2 0.1 Y IR88-MW22IW 3839043.193 284318.276 2/25/2022 GW Nitrate 0.038 J MG_L 0.017 0.05 0.025 Y IR88-MW22IW 3839043.193 284318.276 2/25/2022 GW Nitrite 0.55 MG_L 0.0092 0.05 0.025 Y IR88-MW22IW 3839043.193 284318.276 2/25/2022 GW TCE R-Dase 574 CELLS_ML 0.1 0.5 Y IR88-MW22IW 3839043.193 284318.276 2/25/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW22IW 3839043.193 284318.276 2/25/2022 GW Total organic carbon (TOC) 2.4 MG_L 0.1 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 2/25/2022 GW Trichloroethene 9.1 UG_L 0.28 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 2/25/2022 GW VC R-Dase 338 CELLS_ML 0.1 0.5 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW22IW 3839043.193 284318.276 2/25/2022 GW Vinyl chloride 33 J UG_L 0.68 4 2 Y IR88-MW22IW 3839043.193 284318.276 2/25/2022 GW Sulfide 1.1 MG_L 0.69 1 0.8 Y IR88-MW22IW 3839043.193 284318.276 8/22/2022 GW Alkalinity 380 MG_L 0.23 5 4 Y IR88-MW22IW 3839043.193 284318.276 8/22/2022 GW Chloride 19 MG_L 0.099 2 1 Y IR88-MW22IW 3839043.193 284318.276 8/22/2022 GW cis-1,2-Dichloroethene 85 J UG_L 0.21 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 8/22/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW22IW 3839043.193 284318.276 8/22/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW22IW 3839043.193 284318.276 8/22/2022 GW Methane 10 MG_L 0.048 0.25 0.12 Y IR88-MW22IW 3839043.193 284318.276 8/22/2022 GW Nitrate 0.043 J MG_L 0.017 0.05 0.025 Y IR88-MW22IW 3839043.193 284318.276 8/22/2022 GW Nitrite 0.3 MG_L 0.0092 0.05 0.025 Y IR88-MW22IW 3839043.193 284318.276 8/22/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW22IW 3839043.193 284318.276 8/22/2022 GW Total organic carbon (TOC) 1.7 MG_L 0.37 1 0.75 Y IR88-MW22IW 3839043.193 284318.276 8/22/2022 GW Trichloroethene 5 J UG_L 0.28 1 0.5 Y IR88-MW22IW 3839043.193 284318.276 8/22/2022 GW Vinyl chloride 18 UG_L 0.85 5 2.5 Y IR88-MW22IW 3839043.193 284318.276 8/22/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW22IW 3839043.193 284318.276 7/6/2011 GW Total organic carbon (TOC) 1530 UG_L 0.25 1000 0.5 Y IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Alkalinity 282000 UG_L 10000 Y IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Benzene 6.3 U UG_L 6.3 N IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Chloride 17400 UG_L 2000 Y IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW cis-1,2-Dichloroethene 36 UG_L 6.3 Y IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Ethane 2 U UG_L 2 N IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Ethene 2 U UG_L 2 N IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Ferric iron 400 U UG_L 400 N IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Ferrous iron 2640 UG_L 400 Y IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Methane 28 UG_L 1 Y IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Nitrate 50 U UG_L 50 N IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Nitrite 50 U UG_L 50 N IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Tetrachloroethene 170 UG_L 6.3 Y IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Trichloroethene 51 UG_L 6.3 Y IR88-MW22IW 3839043.193 284318.276 8/9/2007 GW Vinyl chloride 6.3 U UG_L 6.3 N IR88-MW25 3839099.671 284822.858 1/3/2005 GW Benzene 500 U UG_L 500 N IR88-MW25 3839099.671 284822.858 1/3/2005 GW cis-1,2-Dichloroethene 500 U UG_L 500 N IR88-MW25 3839099.671 284822.858 1/3/2005 GW Tetrachloroethene 12000 UG_L 1000 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW25 3839099.671 284822.858 1/3/2005 GW Trichloroethene 500 U UG_L 500 N IR88-MW25 3839099.671 284822.858 1/3/2005 GW Vinyl chloride 500 U UG_L 500 N IR88-MW25 3839099.671 284822.858 8/31/2005 GW Benzene 1000 U UG_L 1000 N IR88-MW25 3839099.671 284822.858 8/31/2005 GW cis-1,2-Dichloroethene 1000 U UG_L 1000 N IR88-MW25 3839099.671 284822.858 8/31/2005 GW Tetrachloroethene 8300 UG_L 1000 Y IR88-MW25 3839099.671 284822.858 8/31/2005 GW Trichloroethene 1000 U UG_L 1000 N IR88-MW25 3839099.671 284822.858 8/31/2005 GW Vinyl chloride 1000 U UG_L 1000 N IR88-MW25 3839099.671 284822.858 8/10/2007 GW Alkalinity 8200 J UG_L 10000 Y IR88-MW25 3839099.671 284822.858 8/10/2007 GW Benzene 170 U UG_L 170 N IR88-MW25 3839099.671 284822.858 8/10/2007 GW Chloride 9030 UG_L 2000 Y IR88-MW25 3839099.671 284822.858 8/10/2007 GW cis-1,2-Dichloroethene 170 U UG_L 170 N IR88-MW25 3839099.671 284822.858 8/10/2007 GW Ethane 2 U UG_L 2 N IR88-MW25 3839099.671 284822.858 8/10/2007 GW Ethene 2 U UG_L 2 N IR88-MW25 3839099.671 284822.858 8/10/2007 GW Ferric iron 400 U UG_L 400 N IR88-MW25 3839099.671 284822.858 8/10/2007 GW Ferrous iron 930 UG_L 400 Y IR88-MW25 3839099.671 284822.858 8/10/2007 GW Methane 14 UG_L 1 Y IR88-MW25 3839099.671 284822.858 8/10/2007 GW Nitrate 50 U UG_L 50 N IR88-MW25 3839099.671 284822.858 8/10/2007 GW Nitrite 50 U UG_L 50 N IR88-MW25 3839099.671 284822.858 8/10/2007 GW Tetrachloroethene 3700 UG_L 170 Y IR88-MW25 3839099.671 284822.858 8/10/2007 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW25 3839099.671 284822.858 8/10/2007 GW Trichloroethene 170 U UG_L 170 N IR88-MW25 3839099.671 284822.858 8/10/2007 GW Vinyl chloride 170 U UG_L 170 N IR88-MW25 3839099.671 284822.858 10/15/2011 GW Benzene 5 U UG_L 2.5 10 5 N IR88-MW25 3839099.671 284822.858 10/15/2011 GW cis-1,2-Dichloroethene 11.3 UG_L 2.5 10 5 Y IR88-MW25 3839099.671 284822.858 10/15/2011 GW Tetrachloroethene 765 J UG_L 2.5 10 5 Y IR88-MW25 3839099.671 284822.858 10/15/2011 GW Trichloroethene 40.8 UG_L 2.5 10 5 Y IR88-MW25 3839099.671 284822.858 10/15/2011 GW Vinyl chloride 5 U UG_L 2.5 10 5 N IR88-MW25 3839099.671 284822.858 10/22/2014 GW Benzene 5 U UG_L 2.5 10 5 N IR88-MW25 3839099.671 284822.858 10/22/2014 GW cis-1,2-Dichloroethene 3.45 J UG_L 2.5 10 5 Y IR88-MW25 3839099.671 284822.858 10/22/2014 GW Naphthalene 5 U UG_L 2.5 10 5 N IR88-MW25 3839099.671 284822.858 10/22/2014 GW Tetrachloroethene 586 UG_L 2.5 10 5 Y IR88-MW25 3839099.671 284822.858 10/22/2014 GW Trichloroethene 12.6 UG_L 2.5 10 5 Y IR88-MW25 3839099.671 284822.858 10/22/2014 GW Vinyl chloride 5 U UG_L 2.5 10 5 N IR88-MW25 3839099.671 284822.858 12/10/2019 GW Alkalinity 4 U MG_L 0.23 5 4 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW25 3839099.671 284822.858 12/10/2019 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW25 3839099.671 284822.858 12/10/2019 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW25 3839099.671 284822.858 12/10/2019 GW Chloride 9.3 J MG_L 0.99 20 10 Y IR88-MW25 3839099.671 284822.858 12/10/2019 GW cis-1,2-Dichloroethene 1.6 UG_L 0.21 1 0.5 Y IR88-MW25 3839099.671 284822.858 12/10/2019 GW Dehalococcoides 1 CELLS_ML 0.05 0.3 Y IR88-MW25 3839099.671 284822.858 12/10/2019 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW25 3839099.671 284822.858 12/10/2019 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW25 3839099.671 284822.858 12/10/2019 GW Methane 0.052 MG_L 0.0019 0.01 0.005 Y IR88-MW25 3839099.671 284822.858 12/10/2019 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW25 3839099.671 284822.858 12/10/2019 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW25 3839099.671 284822.858 12/10/2019 GW Tetrachloroethene 670 UG_L 8 20 10 Y IR88-MW25 3839099.671 284822.858 12/10/2019 GW Total organic carbon (TOC) 1.7 MG_L 0.1 1 0.5 Y IR88-MW25 3839099.671 284822.858 12/10/2019 GW Trichloroethene 8.1 UG_L 0.28 1 0.5 Y IR88-MW25 3839099.671 284822.858 12/10/2019 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW25 3839099.671 284822.858 12/10/2019 GW Vinyl chloride 0.05 UJ UG_L 0.017 0.1 0.05 N IR88-MW25 3839099.671 284822.858 12/10/2019 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW25 3839099.671 284822.858 4/14/2020 GW Alkalinity 4 U MG_L 0.23 5 4 N IR88-MW25 3839099.671 284822.858 4/14/2020 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW25 3839099.671 284822.858 4/14/2020 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW25 3839099.671 284822.858 4/14/2020 GW Chloride 8.7 MG_L 0.0993 2 1 Y IR88-MW25 3839099.671 284822.858 4/14/2020 GW cis-1,2-Dichloroethene 3.6 UG_L 0.21 1 0.5 Y IR88-MW25 3839099.671 284822.858 4/14/2020 GW Dehalococcoides 2 CELLS_ML 0.05 0.3 Y IR88-MW25 3839099.671 284822.858 4/14/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW25 3839099.671 284822.858 4/14/2020 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW25 3839099.671 284822.858 4/14/2020 GW Methane 0.059 MG_L 0.0019 0.01 0.005 Y IR88-MW25 3839099.671 284822.858 4/14/2020 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW25 3839099.671 284822.858 4/14/2020 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW25 3839099.671 284822.858 4/14/2020 GW Tetrachloroethene 730 UG_L 4 10 5 Y IR88-MW25 3839099.671 284822.858 4/14/2020 GW Total organic carbon (TOC) 1.4 MG_L 0.1 1 0.5 Y IR88-MW25 3839099.671 284822.858 4/14/2020 GW Trichloroethene 9.9 UG_L 0.28 1 0.5 Y IR88-MW25 3839099.671 284822.858 4/14/2020 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW25 3839099.671 284822.858 4/14/2020 GW Vinyl chloride 0.05 UJ UG_L 0.017 0.1 0.05 N IR88-MW25 3839099.671 284822.858 4/14/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW25 3839099.671 284822.858 11/9/2020 GW Alkalinity 4 U MG_L 0.23 5 4 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW25 3839099.671 284822.858 11/9/2020 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW25 3839099.671 284822.858 11/9/2020 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW25 3839099.671 284822.858 11/9/2020 GW Chloride 13 MG_L 0.0993 2 1 Y IR88-MW25 3839099.671 284822.858 11/9/2020 GW cis-1,2-Dichloroethene 1.3 UG_L 0.21 1 0.5 Y IR88-MW25 3839099.671 284822.858 11/9/2020 GW Dehalococcoides 2.1 CELLS_ML 0.05 0.3 Y IR88-MW25 3839099.671 284822.858 11/9/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW25 3839099.671 284822.858 11/9/2020 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW25 3839099.671 284822.858 11/9/2020 GW Methane 0.084 MG_L 0.0019 0.01 0.005 Y IR88-MW25 3839099.671 284822.858 11/9/2020 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW25 3839099.671 284822.858 11/9/2020 GW TCE R-Dase 0.081 J CELLS_ML 0.05 0.3 Y IR88-MW25 3839099.671 284822.858 11/9/2020 GW Tetrachloroethene 1000 J UG_L 4 10 5 Y IR88-MW25 3839099.671 284822.858 11/9/2020 GW Total organic carbon (TOC) 1.3 MG_L 0.1 1 0.5 Y IR88-MW25 3839099.671 284822.858 11/9/2020 GW Trichloroethene 8.2 UG_L 0.28 1 0.5 Y IR88-MW25 3839099.671 284822.858 11/9/2020 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW25 3839099.671 284822.858 11/9/2020 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW25 3839099.671 284822.858 11/9/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW25 3839099.671 284822.858 9/16/2021 GW Alkalinity 4 U MG_L 0.23 5 4 N IR88-MW25 3839099.671 284822.858 9/16/2021 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW25 3839099.671 284822.858 9/16/2021 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW25 3839099.671 284822.858 9/16/2021 GW Chloride 9.7 MG_L 0.099 2 1 Y IR88-MW25 3839099.671 284822.858 9/16/2021 GW cis-1,2-Dichloroethene 1.1 J UG_L 0.21 1 0.5 Y IR88-MW25 3839099.671 284822.858 9/16/2021 GW Dehalococcoides 2.05 CELLS_ML 0.05 0.3 Y IR88-MW25 3839099.671 284822.858 9/16/2021 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW25 3839099.671 284822.858 9/16/2021 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW25 3839099.671 284822.858 9/16/2021 GW Methane 0.04 MG_L 0.0019 0.01 0.005 Y IR88-MW25 3839099.671 284822.858 9/16/2021 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW25 3839099.671 284822.858 9/16/2021 GW Nitrate 0.093 MG_L 0.017 0.05 0.025 Y IR88-MW25 3839099.671 284822.858 9/16/2021 GW Nitrite 0.13 MG_L 0.0092 0.05 0.025 Y IR88-MW25 3839099.671 284822.858 9/16/2021 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW25 3839099.671 284822.858 9/16/2021 GW Tetrachloroethene 730 UG_L 4 10 5 Y IR88-MW25 3839099.671 284822.858 9/16/2021 GW Total organic carbon (TOC) 1.2 MG_L 0.1 1 0.5 Y IR88-MW25 3839099.671 284822.858 9/16/2021 GW Trichloroethene 9.1 J UG_L 0.28 1 0.5 Y IR88-MW25 3839099.671 284822.858 9/16/2021 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW25 3839099.671 284822.858 9/16/2021 GW Vinyl chloride 1 U UG_L 0.25 2 1 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW25 3839099.671 284822.858 9/16/2021 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW25 3839099.671 284822.858 3/2/2022 GW Alkalinity 4 U MG_L 0.23 5 4 N IR88-MW25 3839099.671 284822.858 3/2/2022 GW BAV1 R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW25 3839099.671 284822.858 3/2/2022 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW25 3839099.671 284822.858 3/2/2022 GW Chloride 10 MG_L 0.099 2 1 Y IR88-MW25 3839099.671 284822.858 3/2/2022 GW cis-1,2-Dichloroethene 2 UG_L 0.21 1 0.5 Y IR88-MW25 3839099.671 284822.858 3/2/2022 GW Dehalococcoides 0.4 J CELLS_ML 0.1 0.5 Y IR88-MW25 3839099.671 284822.858 3/2/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW25 3839099.671 284822.858 3/2/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW25 3839099.671 284822.858 3/2/2022 GW Methane 0.044 MG_L 0.0019 0.01 0.005 Y IR88-MW25 3839099.671 284822.858 3/2/2022 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW25 3839099.671 284822.858 3/2/2022 GW Nitrate 0.068 MG_L 0.017 0.05 0.025 Y IR88-MW25 3839099.671 284822.858 3/2/2022 GW Nitrite 0.16 MG_L 0.0092 0.05 0.025 Y IR88-MW25 3839099.671 284822.858 3/2/2022 GW TCE R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW25 3839099.671 284822.858 3/2/2022 GW Tetrachloroethene 660 UG_L 4 10 5 Y IR88-MW25 3839099.671 284822.858 3/2/2022 GW Total organic carbon (TOC) 1.1 MG_L 0.1 1 0.5 Y IR88-MW25 3839099.671 284822.858 3/2/2022 GW Trichloroethene 9.4 UG_L 0.28 1 0.5 Y IR88-MW25 3839099.671 284822.858 3/2/2022 GW VC R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW25 3839099.671 284822.858 3/2/2022 GW Vinyl chloride 1 U UG_L 0.25 2 1 N IR88-MW25 3839099.671 284822.858 3/2/2022 GW Sulfide 1.1 MG_L 0.69 1 0.8 Y IR88-MW25 3839099.671 284822.858 8/22/2022 GW Alkalinity 4 U MG_L 0.23 5 4 N IR88-MW25 3839099.671 284822.858 8/22/2022 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW25 3839099.671 284822.858 8/22/2022 GW Chloride 11 MG_L 0.099 2 1 Y IR88-MW25 3839099.671 284822.858 8/22/2022 GW cis-1,2-Dichloroethene 1.2 J UG_L 0.21 1 0.5 Y IR88-MW25 3839099.671 284822.858 8/22/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW25 3839099.671 284822.858 8/22/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW25 3839099.671 284822.858 8/22/2022 GW Methane 0.054 MG_L 0.0019 0.01 0.005 Y IR88-MW25 3839099.671 284822.858 8/22/2022 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW25 3839099.671 284822.858 8/22/2022 GW Nitrate 0.08 MG_L 0.017 0.05 0.025 Y IR88-MW25 3839099.671 284822.858 8/22/2022 GW Nitrite 0.13 MG_L 0.0092 0.05 0.025 Y IR88-MW25 3839099.671 284822.858 8/22/2022 GW Tetrachloroethene 590 J UG_L 2 5 2.5 Y IR88-MW25 3839099.671 284822.858 8/22/2022 GW Total organic carbon (TOC) 1.3 MG_L 0.37 1 0.75 Y IR88-MW25 3839099.671 284822.858 8/22/2022 GW Trichloroethene 5.4 J UG_L 0.28 1 0.5 Y IR88-MW25 3839099.671 284822.858 8/22/2022 GW Vinyl chloride 0.023 J UG_L 0.017 0.1 0.05 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW25 3839099.671 284822.858 8/22/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW25 3839099.671 284822.858 11/15/2005 GW Benzene 1000 U UG_L 1000 N IR88-MW25 3839099.671 284822.858 11/15/2005 GW cis-1,2-Dichloroethene 1000 U UG_L 1000 N IR88-MW25 3839099.671 284822.858 11/15/2005 GW Tetrachloroethene 9800 UG_L 1000 Y IR88-MW25 3839099.671 284822.858 11/15/2005 GW Trichloroethene 1000 U UG_L 1000 N IR88-MW25 3839099.671 284822.858 11/15/2005 GW Vinyl chloride 1000 U UG_L 1000 N IR88-MW25 3839099.671 284822.858 6/2/2005 GW Benzene 1000 U UG_L 1000 N IR88-MW25 3839099.671 284822.858 6/2/2005 GW cis-1,2-Dichloroethene 1000 U UG_L 1000 N IR88-MW25 3839099.671 284822.858 6/2/2005 GW Tetrachloroethene 11000 UG_L 1000 Y IR88-MW25 3839099.671 284822.858 6/2/2005 GW Trichloroethene 1000 U UG_L 1000 N IR88-MW25 3839099.671 284822.858 6/2/2005 GW Vinyl chloride 1000 U UG_L 1000 N IR88-MW25 3839099.671 284822.858 2/22/2006 GW Benzene 1000 U UG_L 1000 N IR88-MW25 3839099.671 284822.858 2/22/2006 GW cis-1,2-Dichloroethene 1000 U UG_L 1000 N IR88-MW25 3839099.671 284822.858 2/22/2006 GW Tetrachloroethene 8200 UG_L 1000 Y IR88-MW25 3839099.671 284822.858 2/22/2006 GW Trichloroethene 1000 U UG_L 1000 N IR88-MW25 3839099.671 284822.858 2/22/2006 GW Vinyl chloride 1000 U UG_L 1000 N IR88-MW30IW 3839115.377 284785.707 8/24/2006 GW Benzene 170 U UG_L 170 N IR88-MW30IW 3839115.377 284785.707 8/24/2006 GW cis-1,2-Dichloroethene 2600 D UG_L 170 Y IR88-MW30IW 3839115.377 284785.707 8/24/2006 GW Tetrachloroethene 4400 D UG_L 170 Y IR88-MW30IW 3839115.377 284785.707 8/24/2006 GW Trichloroethene 5200 D UG_L 170 Y IR88-MW30IW 3839115.377 284785.707 8/24/2006 GW Vinyl chloride 170 U UG_L 170 N IR88-MW30IW 3839115.377 284785.707 8/10/2007 GW Alkalinity 25300 UG_L 10000 Y IR88-MW30IW 3839115.377 284785.707 8/10/2007 GW Benzene 630 U UG_L 630 N IR88-MW30IW 3839115.377 284785.707 8/10/2007 GW Chloride 26300 UG_L 2000 Y IR88-MW30IW 3839115.377 284785.707 8/10/2007 GW cis-1,2-Dichloroethene 9900 UG_L 630 Y IR88-MW30IW 3839115.377 284785.707 8/10/2007 GW Ethane 0.1 J UG_L 2 Y IR88-MW30IW 3839115.377 284785.707 8/10/2007 GW Ethene 0.9 J UG_L 2 Y IR88-MW30IW 3839115.377 284785.707 8/10/2007 GW Ferric iron 880 UG_L 400 Y IR88-MW30IW 3839115.377 284785.707 8/10/2007 GW Ferrous iron 5000 UG_L 400 Y IR88-MW30IW 3839115.377 284785.707 8/10/2007 GW Methane 200 UG_L 10 Y IR88-MW30IW 3839115.377 284785.707 8/10/2007 GW Nitrate 50 U UG_L 50 N IR88-MW30IW 3839115.377 284785.707 8/10/2007 GW Nitrite 50 U UG_L 50 N IR88-MW30IW 3839115.377 284785.707 8/10/2007 GW Tetrachloroethene 630 U UG_L 630 N IR88-MW30IW 3839115.377 284785.707 8/10/2007 GW Total organic carbon (TOC) 4230 J UG_L 5000 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW30IW 3839115.377 284785.707 8/10/2007 GW Trichloroethene 1500 UG_L 630 Y IR88-MW30IW 3839115.377 284785.707 8/10/2007 GW Vinyl chloride 630 U UG_L 630 N IR88-MW30IW 3839115.377 284785.707 8/10/2007 GW Sulfide 1000 U UG_L 1000 N IR88-MW30IW 3839115.377 284785.707 10/16/2011 GW Benzene 10 U UG_L 5 20 10 N IR88-MW30IW 3839115.377 284785.707 10/16/2011 GW cis-1,2-Dichloroethene 10700 UG_L 25 100 50 Y IR88-MW30IW 3839115.377 284785.707 10/16/2011 GW Tetrachloroethene 15.1 J UG_L 5 20 10 Y IR88-MW30IW 3839115.377 284785.707 10/16/2011 GW Trichloroethene 10 U UG_L 5 20 10 N IR88-MW30IW 3839115.377 284785.707 10/16/2011 GW Vinyl chloride 3990 UG_L 5 20 10 Y IR88-MW30IW 3839115.377 284785.707 10/25/2014 GW Benzene 50 U UG_L 25 100 50 N IR88-MW30IW 3839115.377 284785.707 10/25/2014 GW cis-1,2-Dichloroethene 47100 UG_L 125 500 250 Y IR88-MW30IW 3839115.377 284785.707 10/25/2014 GW Naphthalene 50 U UG_L 25 100 50 N IR88-MW30IW 3839115.377 284785.707 10/25/2014 GW Tetrachloroethene 50 U UG_L 25 100 50 N IR88-MW30IW 3839115.377 284785.707 10/25/2014 GW Trichloroethene 50 U UG_L 25 100 50 N IR88-MW30IW 3839115.377 284785.707 10/25/2014 GW Vinyl chloride 1520 UG_L 25 100 50 Y IR88-MW30IW 3839115.377 284785.707 12/11/2019 GW Alkalinity 42 MG_L 0.23 5 4 Y IR88-MW30IW 3839115.377 284785.707 12/11/2019 GW BAV1 R-Dase 0.2 J CELLS_ML 0.1 0.5 Y IR88-MW30IW 3839115.377 284785.707 12/11/2019 GW Benzene 5 U UG_L 2.6 10 5 N IR88-MW30IW 3839115.377 284785.707 12/11/2019 GW Chloride 77 MG_L 0.5 10 5 Y IR88-MW30IW 3839115.377 284785.707 12/11/2019 GW cis-1,2-Dichloroethene 6000 UG_L 21 100 50 Y IR88-MW30IW 3839115.377 284785.707 12/11/2019 GW Dehalococcoides 1060 CELLS_ML 0.1 0.5 Y IR88-MW30IW 3839115.377 284785.707 12/11/2019 GW Ethane 0.068 MG_L 0.0022 0.01 0.005 Y IR88-MW30IW 3839115.377 284785.707 12/11/2019 GW Ethene 1.6 MG_L 0.002 0.01 0.005 Y IR88-MW30IW 3839115.377 284785.707 12/11/2019 GW Methane 18 MG_L 0.097 0.5 0.25 Y IR88-MW30IW 3839115.377 284785.707 12/11/2019 GW Naphthalene 5 U UG_L 3 10 5 N IR88-MW30IW 3839115.377 284785.707 12/11/2019 GW TCE R-Dase 37.5 CELLS_ML 0.1 0.5 Y IR88-MW30IW 3839115.377 284785.707 12/11/2019 GW Tetrachloroethene 5 U UG_L 4 10 5 N IR88-MW30IW 3839115.377 284785.707 12/11/2019 GW Total organic carbon (TOC) 11 MG_L 0.1 1 0.5 Y IR88-MW30IW 3839115.377 284785.707 12/11/2019 GW Trichloroethene 5 U UG_L 2.8 10 5 N IR88-MW30IW 3839115.377 284785.707 12/11/2019 GW VC R-Dase 0.3 J CELLS_ML 0.1 0.5 Y IR88-MW30IW 3839115.377 284785.707 12/11/2019 GW Vinyl chloride 1600 UG_L 25 200 100 Y IR88-MW30IW 3839115.377 284785.707 12/11/2019 GW Sulfide 1.5 MG_L 0.69 1 0.8 Y IR88-MW30IW 3839115.377 284785.707 4/14/2020 GW Alkalinity 44 MG_L 0.23 5 4 Y IR88-MW30IW 3839115.377 284785.707 4/14/2020 GW BAV1 R-Dase 0.2 J CELLS_ML 0.087 0.4 Y IR88-MW30IW 3839115.377 284785.707 4/14/2020 GW Benzene 5 U UG_L 2.6 10 5 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW30IW 3839115.377 284785.707 4/14/2020 GW Chloride 140 MG_L 0.99 20 10 Y IR88-MW30IW 3839115.377 284785.707 4/14/2020 GW cis-1,2-Dichloroethene 14000 UG_L 21 100 50 Y IR88-MW30IW 3839115.377 284785.707 4/14/2020 GW Dehalococcoides 16400 CELLS_ML 0.087 0.4 Y IR88-MW30IW 3839115.377 284785.707 4/14/2020 GW Ethane 0.091 J MG_L 0.055 0.25 0.12 Y IR88-MW30IW 3839115.377 284785.707 4/14/2020 GW Ethene 2.4 MG_L 0.049 0.25 0.12 Y IR88-MW30IW 3839115.377 284785.707 4/14/2020 GW Methane 19 MG_L 0.048 0.25 0.12 Y IR88-MW30IW 3839115.377 284785.707 4/14/2020 GW Naphthalene 5 U UG_L 3 10 5 N IR88-MW30IW 3839115.377 284785.707 4/14/2020 GW TCE R-Dase 6230 CELLS_ML 0.087 0.4 Y IR88-MW30IW 3839115.377 284785.707 4/14/2020 GW Tetrachloroethene 5 U UG_L 4 10 5 N IR88-MW30IW 3839115.377 284785.707 4/14/2020 GW Total organic carbon (TOC) 31 MG_L 0.1 1 0.5 Y IR88-MW30IW 3839115.377 284785.707 4/14/2020 GW Trichloroethene 5 U UG_L 2.8 10 5 N IR88-MW30IW 3839115.377 284785.707 4/14/2020 GW VC R-Dase 0.4 U CELLS_ML 0.087 0.4 N IR88-MW30IW 3839115.377 284785.707 4/14/2020 GW Vinyl chloride 2500 UG_L 25 200 100 Y IR88-MW30IW 3839115.377 284785.707 4/14/2020 GW Sulfide 0.8 J MG_L 0.69 1 0.8 Y IR88-MW30IW 3839115.377 284785.707 11/9/2020 GW Alkalinity 42 MG_L 0.23 5 4 Y IR88-MW30IW 3839115.377 284785.707 11/9/2020 GW BAV1 R-Dase 29 CELLS_ML 0.1 0.7 Y IR88-MW30IW 3839115.377 284785.707 11/9/2020 GW Benzene 10 U UG_L 5.2 20 10 N IR88-MW30IW 3839115.377 284785.707 11/9/2020 GW Chloride 180 MG_L 2 40 20 Y IR88-MW30IW 3839115.377 284785.707 11/9/2020 GW cis-1,2-Dichloroethene 17000 UG_L 42 200 100 Y IR88-MW30IW 3839115.377 284785.707 11/9/2020 GW Dehalococcoides 117000 CELLS_ML 0.1 0.7 Y IR88-MW30IW 3839115.377 284785.707 11/9/2020 GW Ethane 0.29 MG_L 0.055 0.25 0.12 Y IR88-MW30IW 3839115.377 284785.707 11/9/2020 GW Ethene 3.1 MG_L 0.049 0.25 0.12 Y IR88-MW30IW 3839115.377 284785.707 11/9/2020 GW Methane 26 MG_L 0.048 0.25 0.12 Y IR88-MW30IW 3839115.377 284785.707 11/9/2020 GW Naphthalene 10 U UG_L 6 20 10 N IR88-MW30IW 3839115.377 284785.707 11/9/2020 GW TCE R-Dase 58700 CELLS_ML 0.1 0.7 Y IR88-MW30IW 3839115.377 284785.707 11/9/2020 GW Tetrachloroethene 10 U UG_L 8 20 10 N IR88-MW30IW 3839115.377 284785.707 11/9/2020 GW Total organic carbon (TOC) 18 MG_L 0.1 1 0.5 Y IR88-MW30IW 3839115.377 284785.707 11/9/2020 GW Trichloroethene 10 U UG_L 5.6 20 10 N IR88-MW30IW 3839115.377 284785.707 11/9/2020 GW VC R-Dase 0.7 U CELLS_ML 0.1 0.7 N IR88-MW30IW 3839115.377 284785.707 11/9/2020 GW Vinyl chloride 5800 UG_L 50 400 200 Y IR88-MW30IW 3839115.377 284785.707 11/9/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW Alkalinity 24 MG_L 0.23 5 4 Y IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW BAV1 R-Dase 83.5 CELLS_ML 0.065 0.3 Y IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW Benzene 10 U UG_L 5.2 20 10 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW Chloride 210 MG_L 2 40 20 Y IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW cis-1,2-Dichloroethene 26000 UG_L 42 200 100 Y IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW Dehalococcoides 15000 CELLS_ML 0.065 0.3 Y IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW Ethane 0.18 J MG_L 0.044 0.2 0.1 Y IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW Ethene 0.99 MG_L 0.039 0.2 0.1 Y IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW Methane 14 L MG_L 0.039 0.2 0.1 Y IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW Naphthalene 10 U UG_L 6 20 10 N IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW Nitrate 0.043 J MG_L 0.017 0.05 0.025 Y IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW Nitrite 0.54 MG_L 0.0092 0.05 0.025 Y IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW TCE R-Dase 2840 CELLS_ML 0.065 0.3 Y IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW Tetrachloroethene 10 U UG_L 8 20 10 N IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW Total organic carbon (TOC) 39 MG_L 0.1 1 0.5 Y IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW Trichloroethene 10 U UG_L 5.6 20 10 N IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW VC R-Dase 0.3 U CELLS_ML 0.065 0.3 N IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW Vinyl chloride 5300 UG_L 50 400 200 Y IR88-MW30IW 3839115.377 284785.707 9/13/2021 GW Sulfide 1.9 MG_L 0.69 1 0.8 Y IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW Alkalinity 20 MG_L 0.23 5 4 Y IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW BAV1 R-Dase 51.7 CELLS_ML 0.095 0.5 Y IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW Benzene 20 U UG_L 10 40 20 N IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW Chloride 220 MG_L 2 40 20 Y IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW cis-1,2-Dichloroethene 14000 UG_L 84 400 200 Y IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW Dehalococcoides 12300 CELLS_ML 0.095 0.5 Y IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW Ethane 0.2 MG_L 0.0022 0.01 0.005 Y IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW Ethene 1.2 MG_L 0.002 0.01 0.005 Y IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW Methane 20 MG_L 0.048 0.25 0.12 Y IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW Naphthalene 20 U UG_L 12 40 20 N IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW Nitrate 0.04 J MG_L 0.017 0.05 0.025 Y IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW Nitrite 1.3 MG_L 0.0092 0.05 0.025 Y IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW TCE R-Dase 3690 CELLS_ML 0.095 0.5 Y IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW Tetrachloroethene 20 U UG_L 16 40 20 N IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW Total organic carbon (TOC) 4 MG_L 0.1 1 0.5 Y IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW Trichloroethene 20 U UG_L 11 40 20 N IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW VC R-Dase 1 CELLS_ML 0.095 0.5 Y IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW Vinyl chloride 4300 UG_L 10 80 40 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW30IW 3839115.377 284785.707 3/2/2022 GW Sulfide 1.6 MG_L 0.69 1 0.8 Y IR88-MW30IW 3839115.377 284785.707 8/23/2022 GW Alkalinity 18 MG_L 0.23 5 4 Y IR88-MW30IW 3839115.377 284785.707 8/23/2022 GW Benzene 20 U UG_L 10 40 20 N IR88-MW30IW 3839115.377 284785.707 8/23/2022 GW Chloride 240 MG_L 2 40 20 Y IR88-MW30IW 3839115.377 284785.707 8/23/2022 GW cis-1,2-Dichloroethene 9100 J UG_L 84 400 200 Y IR88-MW30IW 3839115.377 284785.707 8/23/2022 GW Ethane 0.33 J MG_L 0.11 0.5 0.25 Y IR88-MW30IW 3839115.377 284785.707 8/23/2022 GW Ethene 1.5 MG_L 0.098 0.5 0.25 Y IR88-MW30IW 3839115.377 284785.707 8/23/2022 GW Methane 21 MG_L 0.097 0.5 0.25 Y IR88-MW30IW 3839115.377 284785.707 8/23/2022 GW Naphthalene 20 U UG_L 12 40 20 N IR88-MW30IW 3839115.377 284785.707 8/23/2022 GW Nitrate 0.038 J MG_L 0.017 0.05 0.025 Y IR88-MW30IW 3839115.377 284785.707 8/23/2022 GW Nitrite 1.6 MG_L 0.0092 0.05 0.025 Y IR88-MW30IW 3839115.377 284785.707 8/23/2022 GW Tetrachloroethene 20 U UG_L 16 40 20 N IR88-MW30IW 3839115.377 284785.707 8/23/2022 GW Total organic carbon (TOC) 3.2 MG_L 0.37 1 0.75 Y IR88-MW30IW 3839115.377 284785.707 8/23/2022 GW Trichloroethene 20 U UG_L 11 40 20 N IR88-MW30IW 3839115.377 284785.707 8/23/2022 GW Vinyl chloride 4100 UG_L 10 80 40 Y IR88-MW30IW 3839115.377 284785.707 8/23/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW30IW 3839115.377 284785.707 11/15/2005 GW Benzene 500 U UG_L 500 N IR88-MW30IW 3839115.377 284785.707 11/15/2005 GW cis-1,2-Dichloroethene 2200 UG_L 500 Y IR88-MW30IW 3839115.377 284785.707 11/15/2005 GW Tetrachloroethene 3300 UG_L 500 Y IR88-MW30IW 3839115.377 284785.707 11/15/2005 GW Trichloroethene 5800 UG_L 500 Y IR88-MW30IW 3839115.377 284785.707 11/15/2005 GW Vinyl chloride 500 U UG_L 500 N IR88-MW30IW 3839115.377 284785.707 2/22/2006 GW Benzene 500 U UG_L 500 N IR88-MW30IW 3839115.377 284785.707 2/22/2006 GW cis-1,2-Dichloroethene 5700 UG_L 500 Y IR88-MW30IW 3839115.377 284785.707 2/22/2006 GW Tetrachloroethene 1900 UG_L 500 Y IR88-MW30IW 3839115.377 284785.707 2/22/2006 GW Trichloroethene 3900 UG_L 500 Y IR88-MW30IW 3839115.377 284785.707 2/22/2006 GW Vinyl chloride 350 J UG_L 500 Y IR88-MW33DW 3839222.31 284691.303 11/18/2005 GW Alkalinity 213000 UG_L 10000 Y IR88-MW33DW 3839222.31 284691.303 11/18/2005 GW Benzene 0.5 U UG_L 0.5 N IR88-MW33DW 3839222.31 284691.303 11/18/2005 GW Chloride 10500 UG_L 2000 Y IR88-MW33DW 3839222.31 284691.303 11/18/2005 GW cis-1,2-Dichloroethene 11 J UG_L 0.5 Y IR88-MW33DW 3839222.31 284691.303 11/18/2005 GW Ethane 2 U UG_L 2 N IR88-MW33DW 3839222.31 284691.303 11/18/2005 GW Ethene 2 U UG_L 2 N IR88-MW33DW 3839222.31 284691.303 11/18/2005 GW Ferric iron 400 U UG_L 400 N IR88-MW33DW 3839222.31 284691.303 11/18/2005 GW Methane 1 U UG_L 1 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW33DW 3839222.31 284691.303 11/18/2005 GW Nitrate 50 U UG_L 50 N IR88-MW33DW 3839222.31 284691.303 11/18/2005 GW Nitrite 50 U UG_L 50 N IR88-MW33DW 3839222.31 284691.303 11/18/2005 GW Tetrachloroethene 96 UG_L 4.2 Y IR88-MW33DW 3839222.31 284691.303 11/18/2005 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW33DW 3839222.31 284691.303 11/18/2005 GW Trichloroethene 39 UG_L 4.2 Y IR88-MW33DW 3839222.31 284691.303 11/18/2005 GW Vinyl chloride 0.11 J UG_L 0.5 Y IR88-MW33DW 3839222.31 284691.303 8/7/2007 GW Alkalinity 180000 UG_L 10000 Y IR88-MW33DW 3839222.31 284691.303 8/7/2007 GW Benzene 0.5 U UG_L 0.5 N IR88-MW33DW 3839222.31 284691.303 8/7/2007 GW Chloride 10700 UG_L 2000 Y IR88-MW33DW 3839222.31 284691.303 8/7/2007 GW cis-1,2-Dichloroethene 25 UG_L 25 Y IR88-MW33DW 3839222.31 284691.303 8/7/2007 GW Ethane 2 U UG_L 2 N IR88-MW33DW 3839222.31 284691.303 8/7/2007 GW Ethene 2 U UG_L 2 N IR88-MW33DW 3839222.31 284691.303 8/7/2007 GW Ferric iron 400 U UG_L 400 N IR88-MW33DW 3839222.31 284691.303 8/7/2007 GW Ferrous iron 1350 UG_L 400 Y IR88-MW33DW 3839222.31 284691.303 8/7/2007 GW Methane 1 U UG_L 1 N IR88-MW33DW 3839222.31 284691.303 8/7/2007 GW Nitrate 50 U UG_L 50 N IR88-MW33DW 3839222.31 284691.303 8/7/2007 GW Nitrite 50 U UG_L 50 N IR88-MW33DW 3839222.31 284691.303 8/7/2007 GW Tetrachloroethene 660 UG_L 25 Y IR88-MW33DW 3839222.31 284691.303 8/7/2007 GW Total organic carbon (TOC) 5000 U UG_L 5000 N IR88-MW33DW 3839222.31 284691.303 8/7/2007 GW Trichloroethene 170 UG_L 25 Y IR88-MW33DW 3839222.31 284691.303 8/7/2007 GW Vinyl chloride 0.28 J UG_L 0.5 Y IR88-MW33DW 3839222.31 284691.303 10/13/2011 GW Benzene 0.5 U UG_L 0.25 1 0.5 N IR88-MW33DW 3839222.31 284691.303 10/13/2011 GW cis-1,2-Dichloroethene 5.28 UG_L 0.25 1 0.5 Y IR88-MW33DW 3839222.31 284691.303 10/13/2011 GW Tetrachloroethene 0.5 U UG_L 0.25 1 0.5 N IR88-MW33DW 3839222.31 284691.303 10/13/2011 GW Trichloroethene 0.68 J UG_L 0.25 1 0.5 Y IR88-MW33DW 3839222.31 284691.303 10/13/2011 GW Vinyl chloride 0.5 U UG_L 0.25 1 0.5 N IR88-MW33DW 3839222.31 284691.303 10/23/2014 GW Benzene 5 U UG_L 2.5 10 5 N IR88-MW33DW 3839222.31 284691.303 10/23/2014 GW cis-1,2-Dichloroethene 33.6 UG_L 2.5 10 5 Y IR88-MW33DW 3839222.31 284691.303 10/23/2014 GW Naphthalene 5 U UG_L 2.5 10 5 N IR88-MW33DW 3839222.31 284691.303 10/23/2014 GW Tetrachloroethene 1380 UG_L 2.5 10 5 Y IR88-MW33DW 3839222.31 284691.303 10/23/2014 GW Trichloroethene 216 UG_L 2.5 10 5 Y IR88-MW33DW 3839222.31 284691.303 10/23/2014 GW Vinyl chloride 5 U UG_L 2.5 10 5 N IR88-MW33DW 3839222.31 284691.303 11/6/2020 GW cis-1,2-Dichloroethene 46 J UG_L 0.21 1 0.5 Y IR88-MW33DW 3839222.31 284691.303 11/6/2020 GW Tetrachloroethene 0.5 UJ UG_L 0.4 1 0.5 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW33DW 3839222.31 284691.303 11/6/2020 GW Trichloroethene 16 J UG_L 0.28 1 0.5 Y IR88-MW33DW 3839222.31 284691.303 11/6/2020 GW Vinyl chloride 0.2 J UG_L 0.017 0.1 0.05 Y IR88-MW33DW 3839222.31 284691.303 9/9/2021 GW cis-1,2-Dichloroethene 1100 UG_L 4.2 20 10 Y IR88-MW33DW 3839222.31 284691.303 9/9/2021 GW Tetrachloroethene 1 U UG_L 0.8 2 1 N IR88-MW33DW 3839222.31 284691.303 9/9/2021 GW Trichloroethene 8 UG_L 0.56 2 1 Y IR88-MW33DW 3839222.31 284691.303 9/9/2021 GW Vinyl chloride 10 UG_L 0.5 4 2 Y IR88-MW33DW 3839222.31 284691.303 2/15/2022 GW cis-1,2-Dichloroethene 3700 J UG_L 10 50 25 Y IR88-MW33DW 3839222.31 284691.303 2/15/2022 GW Tetrachloroethene 2500 J UG_L 20 50 25 Y IR88-MW33DW 3839222.31 284691.303 2/15/2022 GW Trichloroethene 1800 J UG_L 14 50 25 Y IR88-MW33DW 3839222.31 284691.303 2/15/2022 GW Vinyl chloride 240 J UG_L 12 100 50 Y IR88-MW33DW 3839222.31 284691.303 8/23/2022 GW cis-1,2-Dichloroethene 3.2 J UG_L 0.21 1 0.5 Y IR88-MW33DW 3839222.31 284691.303 8/23/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW33DW 3839222.31 284691.303 8/23/2022 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW33DW 3839222.31 284691.303 8/23/2022 GW Vinyl chloride 3.3 J UG_L 0.25 2 1 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Alkalinity 159000 UG_L 10000 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Benzene 63 U UG_L 63 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Chloride 16500 UG_L 2000 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW cis-1,2-Dichloroethene 88 UG_L 63 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ethane 0.2 J UG_L 2 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ethene 0.5 J UG_L 2 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ferric iron 3350 UG_L 400 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ferrous iron 2420 UG_L 400 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Methane 12 UG_L 1 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Nitrate 50 U UG_L 50 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Nitrite 50 U UG_L 50 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Tetrachloroethene 1100 UG_L 63 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Total organic carbon (TOC) 15300 UG_L 5000 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Trichloroethene 110 UG_L 63 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Vinyl chloride 63 U UG_L 63 N IR88-MW39MP 3839153.42 284648.62 10/7/2010 GW Benzene 5 U UG_L 2.5 10 N IR88-MW39MP 3839153.42 284648.62 10/7/2010 GW cis-1,2-Dichloroethene 173 D UG_L 2.5 10 Y IR88-MW39MP 3839153.42 284648.62 10/7/2010 GW Tetrachloroethene 1240 D UG_L 2.5 10 Y IR88-MW39MP 3839153.42 284648.62 10/7/2010 GW Total organic carbon (TOC) 7390 UG_L 0.25 1000 Y IR88-MW39MP 3839153.42 284648.62 10/7/2010 GW Trichloroethene 78.4 D UG_L 2.5 10 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW39MP 3839153.42 284648.62 10/7/2010 GW Vinyl chloride 514 D UG_L 2.5 10 Y IR88-MW39MP 3839153.42 284648.62 1/21/2011 GW Benzene 12.5 U UG_L 6.25 25 N IR88-MW39MP 3839153.42 284648.62 1/21/2011 GW cis-1,2-Dichloroethene 474 D UG_L 6.25 25 Y IR88-MW39MP 3839153.42 284648.62 1/21/2011 GW Tetrachloroethene 3030 D UG_L 6.25 25 Y IR88-MW39MP 3839153.42 284648.62 1/21/2011 GW Total organic carbon (TOC) 5560 UG_L 0.25 1000 Y IR88-MW39MP 3839153.42 284648.62 1/21/2011 GW Trichloroethene 353 D UG_L 6.25 25 Y IR88-MW39MP 3839153.42 284648.62 1/21/2011 GW Vinyl chloride 300 D UG_L 6.25 25 Y IR88-MW39MP 3839153.42 284648.62 4/4/2011 GW Benzene 5 U UG_L 2.5 10 5 N IR88-MW39MP 3839153.42 284648.62 4/4/2011 GW cis-1,2-Dichloroethene 440 D UG_L 2.5 10 5 Y IR88-MW39MP 3839153.42 284648.62 4/4/2011 GW Tetrachloroethene 1900 D UG_L 2.5 10 5 Y IR88-MW39MP 3839153.42 284648.62 4/4/2011 GW Total organic carbon (TOC) 5890 UG_L 0.25 1000 0.5 Y IR88-MW39MP 3839153.42 284648.62 4/4/2011 GW Trichloroethene 302 D UG_L 2.5 10 5 Y IR88-MW39MP 3839153.42 284648.62 4/4/2011 GW Vinyl chloride 428 D UG_L 2.5 10 5 Y IR88-MW39MP 3839153.42 284648.62 7/8/2011 GW Benzene 25 U UG_L 12.5 50 25 N IR88-MW39MP 3839153.42 284648.62 7/8/2011 GW cis-1,2-Dichloroethene 416 D UG_L 12.5 50 25 Y IR88-MW39MP 3839153.42 284648.62 7/8/2011 GW Tetrachloroethene 3970 D UG_L 12.5 50 25 Y IR88-MW39MP 3839153.42 284648.62 7/8/2011 GW Total organic carbon (TOC) 5470 UG_L 0.25 1000 0.5 Y IR88-MW39MP 3839153.42 284648.62 7/8/2011 GW Trichloroethene 455 D UG_L 12.5 50 25 Y IR88-MW39MP 3839153.42 284648.62 7/8/2011 GW Vinyl chloride 469 D UG_L 12.5 50 25 Y IR88-MW39MP 3839153.42 284648.62 10/12/2011 GW Benzene 5 U UG_L 2.5 10 5 N IR88-MW39MP 3839153.42 284648.62 10/12/2011 GW cis-1,2-Dichloroethene 202 UG_L 2.5 10 5 Y IR88-MW39MP 3839153.42 284648.62 10/12/2011 GW Tetrachloroethene 2800 UG_L 5 20 10 Y IR88-MW39MP 3839153.42 284648.62 10/12/2011 GW Total organic carbon (TOC) 4910 UG_L 0.25 1000 0.5 Y IR88-MW39MP 3839153.42 284648.62 10/12/2011 GW Trichloroethene 143 UG_L 2.5 10 5 Y IR88-MW39MP 3839153.42 284648.62 10/12/2011 GW Vinyl chloride 322 UG_L 2.5 10 5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Alkalinity 178000 UG_L 1 1000 1 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW BAV1 R-Dase 398000 CELLS_ML 0.1 0.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Benzene 50 U UG_L 25 100 50 N IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Chloride 16700 UG_L 0.17 500 0.33 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW cis-1,2-Dichloroethene 932 UG_L 25 100 50 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Dehalococcoides 451000 CELLS_ML 0.1 0.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Ethane 11.3 UG_L 0.001 4 0.002 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Ethene 216 UG_L 0.001 4 0.002 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Methane 423 D UG_L 0.002 8 0.004 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Naphthalene 50 U UG_L 25 100 50 N IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW TCE R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Tetrachloroethene 14700 UG_L 25 100 50 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Total organic carbon (TOC) 2930 J UG_L 1.25 3000 2.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Trichloroethene 1080 UG_L 25 100 50 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW VC R-Dase 74100 CELLS_ML 0.1 0.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Vinyl chloride 246 UG_L 25 100 50 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Benzene 50 U UG_L 25 100 50 N IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW cis-1,2-Dichloroethene 8790 UG_L 25 100 50 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Tetrachloroethene 3390 UG_L 25 100 50 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Trichloroethene 2060 UG_L 25 100 50 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Vinyl chloride 1810 UG_L 25 100 50 Y IR88-MW39MP 3839153.42 284648.62 12/9/2020 GW cis-1,2-Dichloroethene 6600 UG_L 10 50 25 Y IR88-MW39MP 3839153.42 284648.62 12/9/2020 GW Tetrachloroethene 14000 UG_L 80 200 100 Y IR88-MW39MP 3839153.42 284648.62 12/9/2020 GW Trichloroethene 2400 UG_L 14 50 25 Y IR88-MW39MP 3839153.42 284648.62 12/9/2020 GW Vinyl chloride 1700 UG_L 12 100 50 Y IR88-MW39MP 3839153.42 284648.62 12/9/2020 GW cis-1,2-Dichloroethene 6800 UG_L 10 50 25 Y IR88-MW39MP 3839153.42 284648.62 12/9/2020 GW Tetrachloroethene 14000 UG_L 80 200 100 Y IR88-MW39MP 3839153.42 284648.62 12/9/2020 GW Trichloroethene 2500 UG_L 14 50 25 Y IR88-MW39MP 3839153.42 284648.62 12/9/2020 GW Vinyl chloride 1800 UG_L 12 100 50 Y IR88-MW39MP 3839153.42 284648.62 9/21/2021 GW cis-1,2-Dichloroethene 800 UG_L 4.2 20 10 Y IR88-MW39MP 3839153.42 284648.62 9/21/2021 GW Tetrachloroethene 29000 UG_L 80 200 100 Y IR88-MW39MP 3839153.42 284648.62 9/21/2021 GW Trichloroethene 960 UG_L 5.6 20 10 Y IR88-MW39MP 3839153.42 284648.62 9/21/2021 GW Vinyl chloride 280 UG_L 5 40 20 Y IR88-MW39MP 3839153.42 284648.62 9/21/2021 GW cis-1,2-Dichloroethene 820 UG_L 4.2 20 10 Y IR88-MW39MP 3839153.42 284648.62 9/21/2021 GW Tetrachloroethene 31000 UG_L 160 400 200 Y IR88-MW39MP 3839153.42 284648.62 9/21/2021 GW Trichloroethene 970 UG_L 5.6 20 10 Y IR88-MW39MP 3839153.42 284648.62 9/21/2021 GW Vinyl chloride 300 UG_L 5 40 20 Y IR88-MW39MP 3839153.42 284648.62 3/7/2022 GW cis-1,2-Dichloroethene 1300 UG_L 4.2 20 10 Y IR88-MW39MP 3839153.42 284648.62 3/7/2022 GW Tetrachloroethene 18000 UG_L 80 200 100 Y IR88-MW39MP 3839153.42 284648.62 3/7/2022 GW Trichloroethene 1400 UG_L 5.6 20 10 Y IR88-MW39MP 3839153.42 284648.62 3/7/2022 GW Vinyl chloride 230 UG_L 5 40 20 Y IR88-MW39MP 3839153.42 284648.62 3/7/2022 GW cis-1,2-Dichloroethene 1300 UG_L 4.2 20 10 Y IR88-MW39MP 3839153.42 284648.62 3/7/2022 GW Tetrachloroethene 18000 UG_L 80 200 100 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW39MP 3839153.42 284648.62 3/7/2022 GW Trichloroethene 1400 UG_L 5.6 20 10 Y IR88-MW39MP 3839153.42 284648.62 3/7/2022 GW Vinyl chloride 230 UG_L 5 40 20 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Alkalinity 117000 UG_L 10000 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Benzene 63 U UG_L 63 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Chloride 32600 UG_L 2000 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW cis-1,2-Dichloroethene 290 UG_L 63 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ethane 32 UG_L 2 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ethene 30 UG_L 3 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ferric iron 437 UG_L 400 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ferrous iron 310 J UG_L 400 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Methane 11 UG_L 1 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Nitrate 50 U UG_L 50 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Nitrite 50 U UG_L 50 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Tetrachloroethene 7700 UG_L 310 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Total organic carbon (TOC) 19600 UG_L 5000 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Trichloroethene 290 UG_L 63 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Vinyl chloride 63 U UG_L 63 N IR88-MW39MP 3839153.42 284648.62 10/7/2010 GW Benzene 500 U UG_L 250 1000 N IR88-MW39MP 3839153.42 284648.62 10/7/2010 GW cis-1,2-Dichloroethene 468 J, D UG_L 250 1000 Y IR88-MW39MP 3839153.42 284648.62 10/7/2010 GW Tetrachloroethene 101000 D UG_L 250 1000 Y IR88-MW39MP 3839153.42 284648.62 10/7/2010 GW Total organic carbon (TOC) 3070 UG_L 0.25 1000 Y IR88-MW39MP 3839153.42 284648.62 10/7/2010 GW Trichloroethene 2500 D UG_L 250 1000 Y IR88-MW39MP 3839153.42 284648.62 10/7/2010 GW Vinyl chloride 1900 D UG_L 250 1000 Y IR88-MW39MP 3839153.42 284648.62 1/21/2011 GW Benzene 500 U UG_L 250 1000 N IR88-MW39MP 3839153.42 284648.62 1/21/2011 GW cis-1,2-Dichloroethene 500 U UG_L 250 1000 N IR88-MW39MP 3839153.42 284648.62 1/21/2011 GW Tetrachloroethene 115000 D UG_L 250 1000 Y IR88-MW39MP 3839153.42 284648.62 1/21/2011 GW Total organic carbon (TOC) 2480 UG_L 0.25 1000 Y IR88-MW39MP 3839153.42 284648.62 1/21/2011 GW Trichloroethene 2960 D UG_L 250 1000 Y IR88-MW39MP 3839153.42 284648.62 1/21/2011 GW Vinyl chloride 631 J D UG_L 250 1000 Y IR88-MW39MP 3839153.42 284648.62 4/4/2011 GW Benzene 125 U UG_L 62.5 250 125 N IR88-MW39MP 3839153.42 284648.62 4/4/2011 GW cis-1,2-Dichloroethene 340 D UG_L 62.5 250 125 Y IR88-MW39MP 3839153.42 284648.62 4/4/2011 GW Tetrachloroethene 102000 D, H1 UG_L 250 1000 500 Y IR88-MW39MP 3839153.42 284648.62 4/4/2011 GW Total organic carbon (TOC) 3070 UG_L 0.25 1000 0.5 Y IR88-MW39MP 3839153.42 284648.62 4/4/2011 GW Trichloroethene 3060 D UG_L 62.5 250 125 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW39MP 3839153.42 284648.62 4/4/2011 GW Vinyl chloride 637 D UG_L 62.5 250 125 Y IR88-MW39MP 3839153.42 284648.62 7/8/2011 GW Benzene 250 U UG_L 125 500 250 N IR88-MW39MP 3839153.42 284648.62 7/8/2011 GW cis-1,2-Dichloroethene 339 J, D UG_L 125 500 250 Y IR88-MW39MP 3839153.42 284648.62 7/8/2011 GW Tetrachloroethene 98500 D UG_L 125 500 250 Y IR88-MW39MP 3839153.42 284648.62 7/8/2011 GW Total organic carbon (TOC) 5500 UG_L 0.25 1000 0.5 Y IR88-MW39MP 3839153.42 284648.62 7/8/2011 GW Trichloroethene 3180 D UG_L 125 500 250 Y IR88-MW39MP 3839153.42 284648.62 7/8/2011 GW Vinyl chloride 176 J, D UG_L 125 500 250 Y IR88-MW39MP 3839153.42 284648.62 10/12/2011 GW Benzene 250 U UG_L 125 500 250 N IR88-MW39MP 3839153.42 284648.62 10/12/2011 GW cis-1,2-Dichloroethene 305 J UG_L 125 500 250 Y IR88-MW39MP 3839153.42 284648.62 10/12/2011 GW Tetrachloroethene 107000 UG_L 250 1000 500 Y IR88-MW39MP 3839153.42 284648.62 10/12/2011 GW Total organic carbon (TOC) 3590 UG_L 0.25 1000 0.5 Y IR88-MW39MP 3839153.42 284648.62 10/12/2011 GW Trichloroethene 2450 UG_L 125 500 250 Y IR88-MW39MP 3839153.42 284648.62 10/12/2011 GW Vinyl chloride 280 J UG_L 125 500 250 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Alkalinity 167000 UG_L 1 1000 1 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW BAV1 R-Dase 40400 CELLS_ML 0.1 0.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Benzene 250 U UG_L 125 500 250 N IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Chloride 15900 UG_L 0.17 500 0.33 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW cis-1,2-Dichloroethene 658 UG_L 125 500 250 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Dehalococcoides 135000 CELLS_ML 0.1 0.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Ethane 2 U UG_L 0.001 4 0.002 N IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Ethene 91.9 UG_L 0.001 4 0.002 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Methane 4130 D UG_L 0.025 100 0.05 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Naphthalene 250 U UG_L 125 500 250 N IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW TCE R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Tetrachloroethene 99800 UG_L 125 500 250 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Total organic carbon (TOC) 2210 J UG_L 1.25 3000 2.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Trichloroethene 2430 UG_L 125 500 250 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW VC R-Dase 35800 CELLS_ML 0.1 0.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Vinyl chloride 321 J UG_L 125 500 250 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Benzene 125 U UG_L 62.5 250 125 N IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW cis-1,2-Dichloroethene 2550 UG_L 62.5 250 125 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Tetrachloroethene 13200 UG_L 62.5 250 125 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Trichloroethene 2340 UG_L 62.5 250 125 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Vinyl chloride 485 J UG_L 62.5 250 125 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW39MP 3839153.42 284648.62 12/9/2020 GW cis-1,2-Dichloroethene 2400 UG_L 21 100 50 Y IR88-MW39MP 3839153.42 284648.62 12/9/2020 GW Tetrachloroethene 32000 UG_L 160 400 200 Y IR88-MW39MP 3839153.42 284648.62 12/9/2020 GW Trichloroethene 3400 UG_L 28 100 50 Y IR88-MW39MP 3839153.42 284648.62 12/9/2020 GW Vinyl chloride 710 UG_L 25 200 100 Y IR88-MW39MP 3839153.42 284648.62 9/21/2021 GW cis-1,2-Dichloroethene 8200 UG_L 21 100 50 Y IR88-MW39MP 3839153.42 284648.62 9/21/2021 GW Tetrachloroethene 8000 UG_L 40 100 50 Y IR88-MW39MP 3839153.42 284648.62 9/21/2021 GW Trichloroethene 2100 UG_L 28 100 50 Y IR88-MW39MP 3839153.42 284648.62 9/21/2021 GW Vinyl chloride 2000 UG_L 25 200 100 Y IR88-MW39MP 3839153.42 284648.62 3/7/2022 GW cis-1,2-Dichloroethene 2600 UG_L 4.2 20 10 Y IR88-MW39MP 3839153.42 284648.62 3/7/2022 GW Tetrachloroethene 390 UG_L 8 20 10 Y IR88-MW39MP 3839153.42 284648.62 3/7/2022 GW Trichloroethene 170 UG_L 0.56 2 1 Y IR88-MW39MP 3839153.42 284648.62 3/7/2022 GW Vinyl chloride 1200 UG_L 5 40 20 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Alkalinity 158000 UG_L 10000 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Benzene 63 U UG_L 63 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Chloride 40600 UG_L 2000 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW cis-1,2-Dichloroethene 170 UG_L 63 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ethane 4 UG_L 2 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ethene 24 UG_L 2 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ferric iron 400 U UG_L 400 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ferrous iron 400 U UG_L 400 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Methane 3 UG_L 1 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Nitrate 50 U UG_L 50 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Nitrite 50 U UG_L 50 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Tetrachloroethene 1400 UG_L 63 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Total organic carbon (TOC) 50300 UG_L 5000 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Trichloroethene 100 UG_L 63 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Vinyl chloride 63 U UG_L 63 N IR88-MW39MP 3839153.42 284648.62 10/7/2010 GW Benzene 12.5 U UG_L 6.25 25 N IR88-MW39MP 3839153.42 284648.62 10/7/2010 GW cis-1,2-Dichloroethene 439 D UG_L 6.25 25 Y IR88-MW39MP 3839153.42 284648.62 10/7/2010 GW Tetrachloroethene 1920 D UG_L 6.25 25 Y IR88-MW39MP 3839153.42 284648.62 10/7/2010 GW Total organic carbon (TOC) 7580 UG_L 0.25 1000 Y IR88-MW39MP 3839153.42 284648.62 10/7/2010 GW Trichloroethene 198 D UG_L 6.25 25 Y IR88-MW39MP 3839153.42 284648.62 10/7/2010 GW Vinyl chloride 1430 D UG_L 6.25 25 Y IR88-MW39MP 3839153.42 284648.62 1/21/2011 GW Benzene 50 U UG_L 25 100 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW39MP 3839153.42 284648.62 1/21/2011 GW cis-1,2-Dichloroethene 689 D UG_L 25 100 Y IR88-MW39MP 3839153.42 284648.62 1/21/2011 GW Tetrachloroethene 9550 D UG_L 25 100 Y IR88-MW39MP 3839153.42 284648.62 1/21/2011 GW Total organic carbon (TOC) 6960 UG_L 0.25 1000 Y IR88-MW39MP 3839153.42 284648.62 1/21/2011 GW Trichloroethene 1030 D UG_L 25 100 Y IR88-MW39MP 3839153.42 284648.62 1/21/2011 GW Vinyl chloride 1990 D UG_L 25 100 Y IR88-MW39MP 3839153.42 284648.62 4/4/2011 GW Benzene 25 U UG_L 12.5 50 25 N IR88-MW39MP 3839153.42 284648.62 4/4/2011 GW cis-1,2-Dichloroethene 729 D UG_L 12.5 50 25 Y IR88-MW39MP 3839153.42 284648.62 4/4/2011 GW Tetrachloroethene 7100 D UG_L 12.5 50 25 Y IR88-MW39MP 3839153.42 284648.62 4/4/2011 GW Total organic carbon (TOC) 7910 UG_L 0.25 1000 0.5 Y IR88-MW39MP 3839153.42 284648.62 4/4/2011 GW Trichloroethene 1000 D UG_L 12.5 50 25 Y IR88-MW39MP 3839153.42 284648.62 4/4/2011 GW Vinyl chloride 1670 D UG_L 12.5 50 25 Y IR88-MW39MP 3839153.42 284648.62 7/8/2011 GW Benzene 500 U UG_L 250 1000 500 N IR88-MW39MP 3839153.42 284648.62 7/8/2011 GW cis-1,2-Dichloroethene 6620 D UG_L 250 1000 500 Y IR88-MW39MP 3839153.42 284648.62 7/8/2011 GW Tetrachloroethene 63400 D UG_L 250 1000 500 Y IR88-MW39MP 3839153.42 284648.62 7/8/2011 GW Total organic carbon (TOC) 10900 UG_L 0.25 1000 0.5 Y IR88-MW39MP 3839153.42 284648.62 7/8/2011 GW Trichloroethene 10300 D UG_L 250 1000 500 Y IR88-MW39MP 3839153.42 284648.62 7/8/2011 GW Vinyl chloride 11400 D UG_L 250 1000 500 Y IR88-MW39MP 3839153.42 284648.62 10/12/2011 GW Benzene 25 U UG_L 12.5 50 25 N IR88-MW39MP 3839153.42 284648.62 10/12/2011 GW cis-1,2-Dichloroethene 531 UG_L 12.5 50 25 Y IR88-MW39MP 3839153.42 284648.62 10/12/2011 GW Tetrachloroethene 4990 UG_L 12.5 50 25 Y IR88-MW39MP 3839153.42 284648.62 10/12/2011 GW Total organic carbon (TOC) 7840 UG_L 0.25 1000 0.5 Y IR88-MW39MP 3839153.42 284648.62 10/12/2011 GW Trichloroethene 803 UG_L 12.5 50 25 Y IR88-MW39MP 3839153.42 284648.62 10/12/2011 GW Vinyl chloride 923 UG_L 12.5 50 25 Y IR88-MW39MP 3839153.42 284648.62 10/22/2014 GW Benzene 10 U UG_L 5 20 10 N IR88-MW39MP 3839153.42 284648.62 10/22/2014 GW cis-1,2-Dichloroethene 1530 UG_L 5 20 10 Y IR88-MW39MP 3839153.42 284648.62 10/22/2014 GW Naphthalene 10 U UG_L 5 20 10 N IR88-MW39MP 3839153.42 284648.62 10/22/2014 GW Tetrachloroethene 1520 UG_L 5 20 10 Y IR88-MW39MP 3839153.42 284648.62 10/22/2014 GW Trichloroethene 430 UG_L 5 20 10 Y IR88-MW39MP 3839153.42 284648.62 10/22/2014 GW Vinyl chloride 1110 UG_L 5 20 10 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Benzene 25 U UG_L 12.5 50 25 N IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW cis-1,2-Dichloroethene 7830 UG_L 12.5 50 25 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Tetrachloroethene 1840 UG_L 12.5 50 25 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Trichloroethene 1100 UG_L 12.5 50 25 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Vinyl chloride 3990 UG_L 12.5 50 25 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW39MP 3839153.42 284648.62 12/9/2020 GW cis-1,2-Dichloroethene 1500 UG_L 4.2 20 10 Y IR88-MW39MP 3839153.42 284648.62 12/9/2020 GW Tetrachloroethene 270 UG_L 0.8 2 1 Y IR88-MW39MP 3839153.42 284648.62 12/9/2020 GW Trichloroethene 270 UG_L 5.6 20 10 Y IR88-MW39MP 3839153.42 284648.62 12/9/2020 GW Vinyl chloride 840 UG_L 5 40 20 Y IR88-MW39MP 3839153.42 284648.62 9/21/2021 GW cis-1,2-Dichloroethene 1100 UG_L 4.2 20 10 Y IR88-MW39MP 3839153.42 284648.62 9/21/2021 GW Tetrachloroethene 14 UG_L 0.8 2 1 Y IR88-MW39MP 3839153.42 284648.62 9/21/2021 GW Trichloroethene 26 UG_L 0.56 2 1 Y IR88-MW39MP 3839153.42 284648.62 9/21/2021 GW Vinyl chloride 850 UG_L 5 40 20 Y IR88-MW39MP 3839153.42 284648.62 3/7/2022 GW cis-1,2-Dichloroethene 670 UG_L 2.1 10 5 Y IR88-MW39MP 3839153.42 284648.62 3/7/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW39MP 3839153.42 284648.62 3/7/2022 GW Trichloroethene 2.6 UG_L 0.28 1 0.5 Y IR88-MW39MP 3839153.42 284648.62 3/7/2022 GW Vinyl chloride 680 UG_L 2.5 20 10 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Alkalinity 59900 UG_L 10000 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Benzene 84 U UG_L 84 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Chloride 22500 UG_L 2000 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW cis-1,2-Dichloroethene 110 UG_L 84 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ethane 0.7 J UG_L 2 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ethene 1 J UG_L 2 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ferric iron 7300 UG_L 400 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ferrous iron 850 UG_L 400 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Methane 13 UG_L 1 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Nitrate 50 U UG_L 50 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Nitrite 50 U UG_L 50 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Tetrachloroethene 2200 UG_L 84 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Total organic carbon (TOC) 23300 UG_L 5000 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Trichloroethene 150 UG_L 84 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Vinyl chloride 84 U UG_L 84 N IR88-MW39MP 3839153.42 284648.62 10/13/2011 GW Benzene 5 U UG_L 2.5 10 5 N IR88-MW39MP 3839153.42 284648.62 10/13/2011 GW cis-1,2-Dichloroethene 92.7 UG_L 2.5 10 5 Y IR88-MW39MP 3839153.42 284648.62 10/13/2011 GW Tetrachloroethene 934 UG_L 2.5 10 5 Y IR88-MW39MP 3839153.42 284648.62 10/13/2011 GW Trichloroethene 163 UG_L 2.5 10 5 Y IR88-MW39MP 3839153.42 284648.62 10/13/2011 GW Vinyl chloride 188 UG_L 2.5 10 5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Alkalinity 101000 UG_L 1 1000 1 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW BAV1 R-Dase 490000 CELLS_ML 0.1 0.5 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Benzene 2.5 U UG_L 1.25 5 2.5 N IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Chloride 14600 UG_L 0.17 500 0.33 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW cis-1,2-Dichloroethene 689 UG_L 1.25 5 2.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Dehalococcoides 806000 CELLS_ML 0.1 0.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Ethane 2 U UG_L 0.001 4 0.002 N IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Ethene 419 UG_L 0.001 4 0.002 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Methane 503 UG_L 0.001 4 0.002 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Naphthalene 2.5 U UG_L 1.25 5 2.5 N IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW TCE R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Tetrachloroethene 197 UG_L 1.25 5 2.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Total organic carbon (TOC) 6220 UG_L 1.25 3000 2.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Trichloroethene 157 UG_L 1.25 5 2.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW VC R-Dase 325000 CELLS_ML 0.1 0.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Vinyl chloride 528 UG_L 1.25 5 2.5 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Benzene 5 U UG_L 2.5 10 5 N IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW cis-1,2-Dichloroethene 1570 UG_L 25 100 50 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Tetrachloroethene 5.15 U UG_L 2.5 10 5 N IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Trichloroethene 5.77 J UG_L 2.5 10 5 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Vinyl chloride 5880 UG_L 25 100 50 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Alkalinity 154000 UG_L 10000 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Benzene 63 U UG_L 63 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Chloride 62200 UG_L 2000 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW cis-1,2-Dichloroethene 64 UG_L 63 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ethane 7 UG_L 2 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ethene 32 UG_L 2 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ferric iron 237 J UG_L 400 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ferrous iron 430 UG_L 400 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Methane 16 UG_L 1 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Nitrate 50 U UG_L 50 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Nitrite 50 U UG_L 50 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Tetrachloroethene 1900 UG_L 63 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Total organic carbon (TOC) 108000 UG_L 10000 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Trichloroethene 95 UG_L 63 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Vinyl chloride 63 U UG_L 63 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW39MP 3839153.42 284648.62 10/13/2011 GW Benzene 2.5 U UG_L 1.25 5 2.5 N IR88-MW39MP 3839153.42 284648.62 10/13/2011 GW cis-1,2-Dichloroethene 145 UG_L 1.25 5 2.5 Y IR88-MW39MP 3839153.42 284648.62 10/13/2011 GW Tetrachloroethene 597 UG_L 1.25 5 2.5 Y IR88-MW39MP 3839153.42 284648.62 10/13/2011 GW Trichloroethene 161 UG_L 1.25 5 2.5 Y IR88-MW39MP 3839153.42 284648.62 10/13/2011 GW Vinyl chloride 265 UG_L 1.25 5 2.5 Y IR88-MW39MP 3839153.42 284648.62 10/22/2014 GW Benzene 2.5 U UG_L 1.25 5 2.5 N IR88-MW39MP 3839153.42 284648.62 10/22/2014 GW cis-1,2-Dichloroethene 299 UG_L 1.25 5 2.5 Y IR88-MW39MP 3839153.42 284648.62 10/22/2014 GW Naphthalene 2.5 U UG_L 1.25 5 2.5 N IR88-MW39MP 3839153.42 284648.62 10/22/2014 GW Tetrachloroethene 423 UG_L 1.25 5 2.5 Y IR88-MW39MP 3839153.42 284648.62 10/22/2014 GW Trichloroethene 242 UG_L 1.25 5 2.5 Y IR88-MW39MP 3839153.42 284648.62 10/22/2014 GW Vinyl chloride 380 UG_L 1.25 5 2.5 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Benzene 1.25 U UG_L 0.625 2.5 1.25 N IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW cis-1,2-Dichloroethene 273 UG_L 0.625 2.5 1.25 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Tetrachloroethene 1.96 U UG_L 0.625 2.5 1.25 N IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Trichloroethene 2.74 UG_L 0.625 2.5 1.25 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Vinyl chloride 1770 UG_L 12.5 50 25 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Alkalinity 50100 UG_L 10000 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Benzene 130 U UG_L 130 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Chloride 17900 UG_L 2000 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW cis-1,2-Dichloroethene 91 J UG_L 130 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ethane 15 UG_L 2 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ethene 63 UG_L 2 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ferric iron 400 U UG_L 400 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Ferrous iron 400 U UG_L 400 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Methane 15 UG_L 1 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Nitrate 50 U UG_L 50 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Nitrite 50 U UG_L 50 N IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Tetrachloroethene 2400 UG_L 130 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Total organic carbon (TOC) 25600 UG_L 5000 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Trichloroethene 140 UG_L 130 Y IR88-MW39MP 3839153.42 284648.62 8/12/2007 GW Vinyl chloride 130 U UG_L 130 N IR88-MW39MP 3839153.42 284648.62 10/13/2011 GW Benzene 2.5 U UG_L 1.25 5 2.5 N IR88-MW39MP 3839153.42 284648.62 10/13/2011 GW cis-1,2-Dichloroethene 77.3 UG_L 1.25 5 2.5 Y IR88-MW39MP 3839153.42 284648.62 10/13/2011 GW Tetrachloroethene 344 UG_L 1.25 5 2.5 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW39MP 3839153.42 284648.62 10/13/2011 GW Trichloroethene 104 UG_L 1.25 5 2.5 Y IR88-MW39MP 3839153.42 284648.62 10/13/2011 GW Vinyl chloride 201 UG_L 1.25 5 2.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Alkalinity 109000 UG_L 1 1000 1 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW BAV1 R-Dase 7490 CELLS_ML 0.1 0.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Benzene 1 U UG_L 0.5 2 1 N IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Chloride 10700 UG_L 0.17 500 0.33 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW cis-1,2-Dichloroethene 74.1 UG_L 0.5 2 1 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Dehalococcoides 25600 CELLS_ML 0.1 0.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Ethane 2 U UG_L 0.001 4 0.002 N IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Ethene 128 UG_L 0.001 4 0.002 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Methane 176 UG_L 0.001 4 0.002 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Naphthalene 1 U UG_L 0.5 2 1 N IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW TCE R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Tetrachloroethene 196 UG_L 0.5 2 1 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Total organic carbon (TOC) 2290 J UG_L 1.25 3000 2.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Trichloroethene 121 UG_L 0.5 2 1 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW VC R-Dase 5840 CELLS_ML 0.1 0.5 Y IR88-MW39MP 3839153.42 284648.62 10/21/2014 GW Vinyl chloride 185 UG_L 0.5 2 1 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Benzene 1.25 U UG_L 0.625 2.5 1.25 N IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW cis-1,2-Dichloroethene 175 UG_L 0.625 2.5 1.25 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Tetrachloroethene 6.05 UG_L 0.625 2.5 1.25 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Trichloroethene 7.09 UG_L 0.625 2.5 1.25 Y IR88-MW39MP 3839153.42 284648.62 9/16/2016 GW Vinyl chloride 3230 UG_L 12.5 50 25 Y IR88-MW39MP 3839153.42 284648.62 10/22/2008 GW Benzene 63 U UG_L 13 63 N IR88-MW39MP 3839153.42 284648.62 10/22/2008 GW cis-1,2-Dichloroethene 490 UG_L 13 63 Y IR88-MW39MP 3839153.42 284648.62 10/22/2008 GW Tetrachloroethene 1700 UG_L 14 63 Y IR88-MW39MP 3839153.42 284648.62 10/22/2008 GW Trichloroethene 70 UG_L 13 63 Y IR88-MW39MP 3839153.42 284648.62 10/22/2008 GW Vinyl chloride 63 U UG_L 13 63 N IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Benzene 50 U UG_L 10 50 N IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Chloride 10000 D UG_L 0.83 2500 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW cis-1,2-Dichloroethene 930 UG_L 10 50 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Ethane 0.3 J UG_L 0.03 2 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Ethene 1 J UG_L 0.03 2 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Methane 38 BD UG_L 0.02 4 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Nitrate 50 U UG_L 0.04 50 N IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Nitrite 250 U UG_L 0.06 250 N IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Tetrachloroethene 2100 UG_L 11 50 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Total organic carbon (TOC) 10000 B UG_L 0.23 1000 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Trichloroethene 140 UG_L 10 50 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Vinyl chloride 50 U UG_L 10 50 N IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Benzene 42 U UG_L 8.3 42 N IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW cis-1,2-Dichloroethene 950 UG_L 8.3 42 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Tetrachloroethene 2400 UG_L 9.2 42 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Trichloroethene 140 UG_L 8.3 42 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Vinyl chloride 42 U UG_L 8.3 42 N IR88-MW39MP 3839153.42 284648.62 10/22/2008 GW Benzene 3100 U UG_L 630 3100 N IR88-MW39MP 3839153.42 284648.62 10/22/2008 GW cis-1,2-Dichloroethene 1600 J UG_L 630 3100 Y IR88-MW39MP 3839153.42 284648.62 10/22/2008 GW Tetrachloroethene 120000 UG_L 690 3100 Y IR88-MW39MP 3839153.42 284648.62 10/22/2008 GW Trichloroethene 3000 J UG_L 630 3100 Y IR88-MW39MP 3839153.42 284648.62 10/22/2008 GW Vinyl chloride 3100 U UG_L 630 3100 N IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Benzene 2000 U UG_L 400 2000 N IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Chloride 8800 D UG_L 0.83 2500 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW cis-1,2-Dichloroethene 1100 J UG_L 400 2000 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Ethane 0.3 J UG_L 0.03 2 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Ethene 2 UG_L 0.03 2 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Methane 36 BD UG_L 0.02 2 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Nitrate 50 U UG_L 0.04 50 N IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Nitrite 330 D UG_L 0.06 250 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Tetrachloroethene 110000 UG_L 440 2000 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Total organic carbon (TOC) 2800 B UG_L 0.23 1000 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Trichloroethene 2700 UG_L 400 2000 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Vinyl chloride 2000 U UG_L 400 2000 N IR88-MW39MP 3839153.42 284648.62 10/22/2008 GW Benzene 130 U UG_L 25 130 N IR88-MW39MP 3839153.42 284648.62 10/22/2008 GW cis-1,2-Dichloroethene 1700 UG_L 25 130 Y IR88-MW39MP 3839153.42 284648.62 10/22/2008 GW Tetrachloroethene 3600 UG_L 28 130 Y IR88-MW39MP 3839153.42 284648.62 10/22/2008 GW Trichloroethene 280 UG_L 25 130 Y IR88-MW39MP 3839153.42 284648.62 10/22/2008 GW Vinyl chloride 130 U UG_L 25 130 N IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Benzene 63 U UG_L 13 63 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Chloride 8900 D UG_L 0.83 2500 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW cis-1,2-Dichloroethene 2700 UG_L 13 63 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Ethane 0.8 J UG_L 0.03 2 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Ethene 4 UG_L 0.03 2 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Methane 81 BD UG_L 0.02 2 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Nitrate 50 U UG_L 0.04 50 N IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Nitrite 250 U UG_L 0.06 250 N IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Tetrachloroethene 3500 UG_L 14 63 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Total organic carbon (TOC) 11000 B UG_L 0.23 1000 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Trichloroethene 330 UG_L 13 63 Y IR88-MW39MP 3839153.42 284648.62 10/1/2009 GW Vinyl chloride 63 U UG_L 13 63 N IR88-MW39MP 3839153.42 284648.62 10/23/2008 GW Benzene 21 U UG_L 4.2 21 N IR88-MW39MP 3839153.42 284648.62 10/23/2008 GW cis-1,2-Dichloroethene 600 UG_L 4.2 21 Y IR88-MW39MP 3839153.42 284648.62 10/23/2008 GW Tetrachloroethene 29 UG_L 4.6 21 Y IR88-MW39MP 3839153.42 284648.62 10/23/2008 GW Trichloroethene 21 U UG_L 4.2 21 N IR88-MW39MP 3839153.42 284648.62 10/23/2008 GW Vinyl chloride 21 U UG_L 4.2 21 N IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Benzene 25 U UG_L 5 25 N IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Chloride 7300 D UG_L 0.83 2500 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW cis-1,2-Dichloroethene 980 UG_L 5 25 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Ethane 0.09 J UG_L 0.03 2 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Ethene 0.5 J UG_L 0.03 2 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Methane 88 BD UG_L 0.02 2 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Nitrate 50 U UG_L 0.04 50 N IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Nitrite 250 U UG_L 0.06 250 N IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Tetrachloroethene 14 J UG_L 5.5 25 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Total organic carbon (TOC) 8100 B UG_L 0.23 1000 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Trichloroethene 5.3 J UG_L 5 25 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Vinyl chloride 25 U UG_L 5 25 N IR88-MW39MP 3839153.42 284648.62 10/23/2008 GW Benzene 25 U UG_L 5 25 N IR88-MW39MP 3839153.42 284648.62 10/23/2008 GW cis-1,2-Dichloroethene 770 UG_L 5 25 Y IR88-MW39MP 3839153.42 284648.62 10/23/2008 GW Tetrachloroethene 270 UG_L 5.5 25 Y IR88-MW39MP 3839153.42 284648.62 10/23/2008 GW Trichloroethene 19 J UG_L 5 25 Y IR88-MW39MP 3839153.42 284648.62 10/23/2008 GW Vinyl chloride 25 U UG_L 5 25 N IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Benzene 31 U UG_L 6.3 31 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Chloride 13000 D UG_L 0.83 2500 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW cis-1,2-Dichloroethene 1300 UG_L 6.3 31 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Ethane 0.2 J UG_L 0.03 2 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Ethene 1 J UG_L 0.03 2 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Methane 140 BD UG_L 0.02 3 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Nitrate 50 U UG_L 0.04 50 N IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Nitrite 250 U UG_L 0.06 250 N IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Tetrachloroethene 39 UG_L 6.9 31 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Total organic carbon (TOC) 32000 B UG_L 0.23 1000 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Trichloroethene 31 U UG_L 6.3 31 N IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Vinyl chloride 31 U UG_L 6.3 31 N IR88-MW39MP 3839153.42 284648.62 10/23/2008 GW Benzene 13 U UG_L 2.5 13 N IR88-MW39MP 3839153.42 284648.62 10/23/2008 GW cis-1,2-Dichloroethene 480 UG_L 2.5 13 Y IR88-MW39MP 3839153.42 284648.62 10/23/2008 GW Tetrachloroethene 96 UG_L 2.8 13 Y IR88-MW39MP 3839153.42 284648.62 10/23/2008 GW Trichloroethene 11 J UG_L 2.5 13 Y IR88-MW39MP 3839153.42 284648.62 10/23/2008 GW Vinyl chloride 13 U UG_L 2.5 13 N IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Benzene 0.12 J UG_L 0.1 0.5 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Chloride 13000 UG_L 0.83 2500 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW cis-1,2-Dichloroethene 320 UG_L 1.3 6.3 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Ethane 2 U UG_L 0.03 2 N IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Ethene 0.9 J UG_L 0.03 2 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Methane 31 B UG_L 0.02 1 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Nitrate 50 U UG_L 0.04 50 N IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Nitrite 250 U UG_L 0.06 250 N IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Tetrachloroethene 47 UG_L 1.4 6.3 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Total organic carbon (TOC) 3300 UG_L 0.23 1000 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Trichloroethene 5.5 UG_L 0.1 0.5 Y IR88-MW39MP 3839153.42 284648.62 10/6/2009 GW Vinyl chloride 0.49 J UG_L 0.1 0.5 Y IR88-MW45DW3 3839143.7 284640.858 10/7/2010 GW Benzene 200 U UG_L 100 400 N IR88-MW45DW3 3839143.7 284640.858 10/7/2010 GW cis-1,2-Dichloroethene 370 J, D UG_L 100 400 Y IR88-MW45DW3 3839143.7 284640.858 10/7/2010 GW Dehalobacter 2670 GC_ML 0.1 1 Y IR88-MW45DW3 3839143.7 284640.858 10/7/2010 GW Dehalococcoides 1.2 GC_ML 0.1 0.5 Y IR88-MW45DW3 3839143.7 284640.858 10/7/2010 GW Desulfuromonas 7080 GC_ML 0.1 1 Y IR88-MW45DW3 3839143.7 284640.858 10/7/2010 GW Methane Oxidizing Bacteria 736 GC_ML 0.1 1 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW45DW3 3839143.7 284640.858 10/7/2010 GW Tetrachloroethene 66900 D UG_L 100 400 Y IR88-MW45DW3 3839143.7 284640.858 10/7/2010 GW Toluene Dioxygenase 1 U GC_ML 0.1 1 N IR88-MW45DW3 3839143.7 284640.858 10/7/2010 GW Total organic carbon (TOC) 2050 UG_L 0.25 1000 Y IR88-MW45DW3 3839143.7 284640.858 10/7/2010 GW Trichloroethene 1630 D UG_L 100 400 Y IR88-MW45DW3 3839143.7 284640.858 10/7/2010 GW Vinyl chloride 200 U UG_L 100 400 N IR88-MW45DW3 3839143.7 284640.858 11/15/2010 GW Total organic carbon (TOC) 13100 M UG_L 0.8 1000 Y IR88-MW45DW3 3839143.7 284640.858 1/20/2011 GW Benzene 250 U UG_L 125 500 N IR88-MW45DW3 3839143.7 284640.858 1/20/2011 GW cis-1,2-Dichloroethene 250 U UG_L 125 500 N IR88-MW45DW3 3839143.7 284640.858 1/20/2011 GW Dehalobacter 249000 GC_ML 0.1 1 Y IR88-MW45DW3 3839143.7 284640.858 1/20/2011 GW Dehalococcoides 1.9 GC_ML 0.1 1 Y IR88-MW45DW3 3839143.7 284640.858 1/20/2011 GW Desulfuromonas 1 U GC_ML 0.1 1 N IR88-MW45DW3 3839143.7 284640.858 1/20/2011 GW Methane Oxidizing Bacteria 472000 GC_ML 0.1 1 Y IR88-MW45DW3 3839143.7 284640.858 1/20/2011 GW Tetrachloroethene 80800 D UG_L 125 500 Y IR88-MW45DW3 3839143.7 284640.858 1/20/2011 GW Toluene Dioxygenase 1640000 GC_ML 0.1 1 Y IR88-MW45DW3 3839143.7 284640.858 1/20/2011 GW Total organic carbon (TOC) 2930 UG_L 0.25 1000 Y IR88-MW45DW3 3839143.7 284640.858 1/20/2011 GW Trichloroethene 2640 D UG_L 125 500 Y IR88-MW45DW3 3839143.7 284640.858 1/20/2011 GW Vinyl chloride 250 Y U UG_L 125 500 N IR88-MW45DW3 3839143.7 284640.858 4/5/2011 GW Benzene 125 U UG_L 62.5 250 125 N IR88-MW45DW3 3839143.7 284640.858 4/5/2011 GW Benzyl Succinante Synthase 1 U GC_ML 0.1 1 N IR88-MW45DW3 3839143.7 284640.858 4/5/2011 GW cis-1,2-Dichloroethene 849 D UG_L 62.5 250 125 Y IR88-MW45DW3 3839143.7 284640.858 4/5/2011 GW Dehalobacter 16500 GC_ML 0.1 1 Y IR88-MW45DW3 3839143.7 284640.858 4/5/2011 GW Dehalococcoides 158 GC_ML 0.1 1 Y IR88-MW45DW3 3839143.7 284640.858 4/5/2011 GW Desulfuromonas 1290000 GC_ML 0.1 1 Y IR88-MW45DW3 3839143.7 284640.858 4/5/2011 GW Methane Oxidizing Bacteria 152 GC_ML 0.1 1 Y IR88-MW45DW3 3839143.7 284640.858 4/5/2011 GW Tetrachloroethene 112000 D, H1 UG_L 250 1000 500 Y IR88-MW45DW3 3839143.7 284640.858 4/5/2011 GW Total organic carbon (TOC) 1680 UG_L 0.25 1000 0.5 Y IR88-MW45DW3 3839143.7 284640.858 4/5/2011 GW Trichloroethene 3440 D UG_L 62.5 250 125 Y IR88-MW45DW3 3839143.7 284640.858 4/5/2011 GW Vinyl chloride 125 U UG_L 62.5 250 125 N IR88-MW45DW3 3839143.7 284640.858 7/7/2011 GW Benzene 250 U UG_L 125 500 250 N IR88-MW45DW3 3839143.7 284640.858 7/7/2011 GW cis-1,2-Dichloroethene 920 D UG_L 125 500 250 Y IR88-MW45DW3 3839143.7 284640.858 7/7/2011 GW Dehalobacter 27300 GC_ML 0.1 1 Y IR88-MW45DW3 3839143.7 284640.858 7/7/2011 GW Dehalococcoides 1.4 GC_ML 0.1 1 Y IR88-MW45DW3 3839143.7 284640.858 7/7/2011 GW Desulfuromonas 81300 GC_ML 0.1 1 Y IR88-MW45DW3 3839143.7 284640.858 7/7/2011 GW Methane Oxidizing Bacteria 8450000 GC_ML 0.1 1 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW45DW3 3839143.7 284640.858 7/7/2011 GW Tetrachloroethene 85500 D UG_L 125 500 250 Y IR88-MW45DW3 3839143.7 284640.858 7/7/2011 GW Toluene Dioxygenase 13800 GC_ML 0.1 1 Y IR88-MW45DW3 3839143.7 284640.858 7/7/2011 GW Total organic carbon (TOC) 1470 UG_L 0.25 1000 0.5 Y IR88-MW45DW3 3839143.7 284640.858 7/7/2011 GW Trichloroethene 3330 D UG_L 125 500 250 Y IR88-MW45DW3 3839143.7 284640.858 7/7/2011 GW Vinyl chloride 250 U UG_L 125 500 250 N IR88-MW45DW3 3839143.7 284640.858 10/12/2011 GW Benzene 500 U UG_L 250 1000 500 N IR88-MW45DW3 3839143.7 284640.858 10/12/2011 GW cis-1,2-Dichloroethene 601 J UG_L 250 1000 500 Y IR88-MW45DW3 3839143.7 284640.858 10/12/2011 GW Dehalobacter 5300 GC_ML 0.1 3 Y IR88-MW45DW3 3839143.7 284640.858 10/12/2011 GW Dehalococcoides 0.5 U GC_ML 0.1 0.5 N IR88-MW45DW3 3839143.7 284640.858 10/12/2011 GW Desulfuromonas 45600 GC_ML 0.1 1 Y IR88-MW45DW3 3839143.7 284640.858 10/12/2011 GW Methane Oxidizing Bacteria 147000 GC_ML 0.1 1 Y IR88-MW45DW3 3839143.7 284640.858 10/12/2011 GW Tetrachloroethene 122000 UG_L 250 1000 500 Y IR88-MW45DW3 3839143.7 284640.858 10/12/2011 GW Toluene Dioxygenase 1 U GC_ML 0.1 1 N IR88-MW45DW3 3839143.7 284640.858 10/12/2011 GW Total organic carbon (TOC) 1230 UG_L 0.25 1000 0.5 Y IR88-MW45DW3 3839143.7 284640.858 10/12/2011 GW Trichloroethene 2670 UG_L 250 1000 500 Y IR88-MW45DW3 3839143.7 284640.858 10/12/2011 GW Vinyl chloride 500 U UG_L 250 1000 500 N IR88-MW45DW3 3839143.7 284640.858 10/21/2014 GW Alkalinity 137000 UG_L 1 1000 1 Y IR88-MW45DW3 3839143.7 284640.858 10/21/2014 GW BAV1 R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW45DW3 3839143.7 284640.858 10/21/2014 GW Benzene 250 U UG_L 125 500 250 N IR88-MW45DW3 3839143.7 284640.858 10/21/2014 GW Chloride 15000 UG_L 0.17 500 0.33 Y IR88-MW45DW3 3839143.7 284640.858 10/21/2014 GW cis-1,2-Dichloroethene 498 J UG_L 125 500 250 Y IR88-MW45DW3 3839143.7 284640.858 10/21/2014 GW Dehalococcoides 1.3 CELLS_ML 0.1 0.5 Y IR88-MW45DW3 3839143.7 284640.858 10/21/2014 GW Ethane 2 U UG_L 0.001 4 0.002 N IR88-MW45DW3 3839143.7 284640.858 10/21/2014 GW Ethene 1.41 J UG_L 0.001 4 0.002 Y IR88-MW45DW3 3839143.7 284640.858 10/21/2014 GW Methane 31.8 UG_L 0.001 4 0.002 Y IR88-MW45DW3 3839143.7 284640.858 10/21/2014 GW Naphthalene 250 U UG_L 125 500 250 N IR88-MW45DW3 3839143.7 284640.858 10/21/2014 GW TCE R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW45DW3 3839143.7 284640.858 10/21/2014 GW Tetrachloroethene 68700 UG_L 125 500 250 Y IR88-MW45DW3 3839143.7 284640.858 10/21/2014 GW Total organic carbon (TOC) 1410 J UG_L 1.25 3000 2.5 Y IR88-MW45DW3 3839143.7 284640.858 10/21/2014 GW Trichloroethene 2420 UG_L 125 500 250 Y IR88-MW45DW3 3839143.7 284640.858 10/21/2014 GW VC R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW45DW3 3839143.7 284640.858 10/21/2014 GW Vinyl chloride 250 U UG_L 125 500 250 N IR88-MW45DW3 3839143.7 284640.858 9/16/2016 GW Benzene 125 U UG_L 62.5 250 125 N IR88-MW45DW3 3839143.7 284640.858 9/16/2016 GW cis-1,2-Dichloroethene 191 J UG_L 62.5 250 125 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW45DW3 3839143.7 284640.858 9/16/2016 GW Tetrachloroethene 30400 UG_L 62.5 250 125 Y IR88-MW45DW3 3839143.7 284640.858 9/16/2016 GW Trichloroethene 950 UG_L 62.5 250 125 Y IR88-MW45DW3 3839143.7 284640.858 9/16/2016 GW Vinyl chloride 125 U UG_L 62.5 250 125 N IR88-MW45DW3 3839143.7 284640.858 11/4/2020 GW cis-1,2-Dichloroethene 540 UG_L 0.84 4 2 Y IR88-MW45DW3 3839143.7 284640.858 11/4/2020 GW Tetrachloroethene 20000 UG_L 80 200 100 Y IR88-MW45DW3 3839143.7 284640.858 11/4/2020 GW Trichloroethene 380 UG_L 1.1 4 2 Y IR88-MW45DW3 3839143.7 284640.858 11/4/2020 GW Vinyl chloride 4 U UG_L 1 8 4 N IR88-MW45DW3 3839143.7 284640.858 9/9/2021 GW cis-1,2-Dichloroethene 57 UG_L 8.4 40 20 Y IR88-MW45DW3 3839143.7 284640.858 9/9/2021 GW Tetrachloroethene 20000 UG_L 160 400 200 Y IR88-MW45DW3 3839143.7 284640.858 9/9/2021 GW Trichloroethene 260 UG_L 11 40 20 Y IR88-MW45DW3 3839143.7 284640.858 9/9/2021 GW Vinyl chloride 40 U UG_L 10 80 40 N IR88-MW45DW3 3839143.7 284640.858 2/17/2022 GW cis-1,2-Dichloroethene 140 J UG_L 4.2 20 10 Y IR88-MW45DW3 3839143.7 284640.858 2/17/2022 GW Tetrachloroethene 20000 J UG_L 80 200 100 Y IR88-MW45DW3 3839143.7 284640.858 2/17/2022 GW Trichloroethene 530 J UG_L 5.6 20 10 Y IR88-MW45DW3 3839143.7 284640.858 2/17/2022 GW Vinyl chloride 20 U UG_L 5 40 20 N IR88-MW45DW3 3839143.7 284640.858 8/22/2022 GW cis-1,2-Dichloroethene 610 J UG_L 4.2 20 10 Y IR88-MW45DW3 3839143.7 284640.858 8/22/2022 GW Tetrachloroethene 24000 J UG_L 80 200 100 Y IR88-MW45DW3 3839143.7 284640.858 8/22/2022 GW Trichloroethene 1600 J UG_L 5.6 20 10 Y IR88-MW45DW3 3839143.7 284640.858 8/22/2022 GW Vinyl chloride 9.8 J UG_L 5 40 20 Y IR88-MW47DW3 3839139.204 284625.941 10/8/2010 GW Benzene 25 U UG_L 12.5 50 N IR88-MW47DW3 3839139.204 284625.941 10/8/2010 GW cis-1,2-Dichloroethene 72 D UG_L 12.5 50 Y IR88-MW47DW3 3839139.204 284625.941 10/8/2010 GW Tetrachloroethene 4230 D UG_L 12.5 50 Y IR88-MW47DW3 3839139.204 284625.941 10/8/2010 GW Total organic carbon (TOC) 3310 UG_L 0.25 1000 Y IR88-MW47DW3 3839139.204 284625.941 10/8/2010 GW Trichloroethene 204 D UG_L 12.5 50 Y IR88-MW47DW3 3839139.204 284625.941 10/8/2010 GW Vinyl chloride 25 U UG_L 12.5 50 N IR88-MW47DW3 3839139.204 284625.941 11/15/2010 GW Total organic carbon (TOC) 5720 M UG_L 0.8 1000 Y IR88-MW47DW3 3839139.204 284625.941 1/21/2011 GW Benzene 50 U UG_L 25 100 N IR88-MW47DW3 3839139.204 284625.941 1/21/2011 GW cis-1,2-Dichloroethene 188 D UG_L 25 100 Y IR88-MW47DW3 3839139.204 284625.941 1/21/2011 GW Tetrachloroethene 17600 D UG_L 25 100 Y IR88-MW47DW3 3839139.204 284625.941 1/21/2011 GW Total organic carbon (TOC) 2280 UG_L 0.25 1000 Y IR88-MW47DW3 3839139.204 284625.941 1/21/2011 GW Trichloroethene 859 D UG_L 25 100 Y IR88-MW47DW3 3839139.204 284625.941 1/21/2011 GW Vinyl chloride 50 U UG_L 25 100 N IR88-MW47DW3 3839139.204 284625.941 4/4/2011 GW Benzene 100 U UG_L 50 200 100 N IR88-MW47DW3 3839139.204 284625.941 4/4/2011 GW cis-1,2-Dichloroethene 414 D UG_L 50 200 100 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW47DW3 3839139.204 284625.941 4/4/2011 GW Tetrachloroethene 34900 D UG_L 50 200 100 Y IR88-MW47DW3 3839139.204 284625.941 4/4/2011 GW Total organic carbon (TOC) 2190 UG_L 0.25 1000 0.5 Y IR88-MW47DW3 3839139.204 284625.941 4/4/2011 GW Trichloroethene 1820 D UG_L 50 200 100 Y IR88-MW47DW3 3839139.204 284625.941 4/4/2011 GW Vinyl chloride 100 U UG_L 50 200 100 N IR88-MW47DW3 3839139.204 284625.941 7/5/2011 GW Benzene 125 U UG_L 62.5 250 125 N IR88-MW47DW3 3839139.204 284625.941 7/5/2011 GW cis-1,2-Dichloroethene 515 D UG_L 62.5 250 125 Y IR88-MW47DW3 3839139.204 284625.941 7/5/2011 GW Tetrachloroethene 33200 D UG_L 62.5 250 125 Y IR88-MW47DW3 3839139.204 284625.941 7/5/2011 GW Trichloroethene 2160 D UG_L 62.5 250 125 Y IR88-MW47DW3 3839139.204 284625.941 7/5/2011 GW Vinyl chloride 125 U UG_L 62.5 250 125 N IR88-MW47DW3 3839139.204 284625.941 7/6/2011 GW Total organic carbon (TOC) 3160 UG_L 0.25 1000 0.5 Y IR88-MW47DW3 3839139.204 284625.941 10/10/2011 GW Benzene 125 U UG_L 62.5 250 125 N IR88-MW47DW3 3839139.204 284625.941 10/10/2011 GW cis-1,2-Dichloroethene 563 UG_L 62.5 250 125 Y IR88-MW47DW3 3839139.204 284625.941 10/10/2011 GW Tetrachloroethene 28000 UG_L 62.5 250 125 Y IR88-MW47DW3 3839139.204 284625.941 10/10/2011 GW Total organic carbon (TOC) 2020 UG_L 0.25 1000 0.5 Y IR88-MW47DW3 3839139.204 284625.941 10/10/2011 GW Trichloroethene 1600 UG_L 62.5 250 125 Y IR88-MW47DW3 3839139.204 284625.941 10/10/2011 GW Vinyl chloride 125 U UG_L 62.5 250 125 N IR88-MW47DW3 3839139.204 284625.941 10/21/2014 GW Benzene 125 U UG_L 62.5 250 125 N IR88-MW47DW3 3839139.204 284625.941 10/21/2014 GW cis-1,2-Dichloroethene 330 UG_L 62.5 250 125 Y IR88-MW47DW3 3839139.204 284625.941 10/21/2014 GW Naphthalene 125 U UG_L 62.5 250 125 N IR88-MW47DW3 3839139.204 284625.941 10/21/2014 GW Tetrachloroethene 25700 UG_L 62.5 250 125 Y IR88-MW47DW3 3839139.204 284625.941 10/21/2014 GW Trichloroethene 2050 UG_L 62.5 250 125 Y IR88-MW47DW3 3839139.204 284625.941 10/21/2014 GW Vinyl chloride 125 U UG_L 62.5 250 125 N IR88-MW47DW3 3839139.204 284625.941 9/16/2016 GW Benzene 100 U UG_L 50 200 100 N IR88-MW47DW3 3839139.204 284625.941 9/16/2016 GW cis-1,2-Dichloroethene 350 UG_L 50 200 100 Y IR88-MW47DW3 3839139.204 284625.941 9/16/2016 GW Tetrachloroethene 7720 UG_L 50 200 100 Y IR88-MW47DW3 3839139.204 284625.941 9/16/2016 GW Trichloroethene 1020 UG_L 50 200 100 Y IR88-MW47DW3 3839139.204 284625.941 9/16/2016 GW Vinyl chloride 56.4 J UG_L 50 200 100 Y IR88-MW47DW3 3839139.204 284625.941 11/4/2020 GW cis-1,2-Dichloroethene 2400 UG_L 21 100 50 Y IR88-MW47DW3 3839139.204 284625.941 11/4/2020 GW Tetrachloroethene 15000 UG_L 40 100 50 Y IR88-MW47DW3 3839139.204 284625.941 11/4/2020 GW Trichloroethene 1700 UG_L 28 100 50 Y IR88-MW47DW3 3839139.204 284625.941 11/4/2020 GW Vinyl chloride 130 J UG_L 2.5 20 10 Y IR88-MW47DW3 3839139.204 284625.941 9/9/2021 GW cis-1,2-Dichloroethene 490 UG_L 2.1 10 5 Y IR88-MW47DW3 3839139.204 284625.941 9/9/2021 GW Tetrachloroethene 6600 UG_L 40 100 50 Y IR88-MW47DW3 3839139.204 284625.941 9/9/2021 GW Trichloroethene 600 UG_L 2.8 10 5 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW47DW3 3839139.204 284625.941 9/9/2021 GW Vinyl chloride 33 UG_L 2.5 20 10 Y IR88-MW47DW3 3839139.204 284625.941 2/17/2022 GW cis-1,2-Dichloroethene 270 J UG_L 2.1 10 5 Y IR88-MW47DW3 3839139.204 284625.941 2/17/2022 GW Tetrachloroethene 13000 J UG_L 40 100 50 Y IR88-MW47DW3 3839139.204 284625.941 2/17/2022 GW Trichloroethene 900 J UG_L 2.8 10 5 Y IR88-MW47DW3 3839139.204 284625.941 2/17/2022 GW Vinyl chloride 19 J UG_L 2.5 20 10 Y IR88-MW47DW3 3839139.204 284625.941 8/22/2022 GW cis-1,2-Dichloroethene 160 J UG_L 1 5 2.5 Y IR88-MW47DW3 3839139.204 284625.941 8/22/2022 GW Tetrachloroethene 6200 J UG_L 20 50 25 Y IR88-MW47DW3 3839139.204 284625.941 8/22/2022 GW Trichloroethene 610 J UG_L 1.4 5 2.5 Y IR88-MW47DW3 3839139.204 284625.941 8/22/2022 GW Vinyl chloride 12 J UG_L 0.17 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/5/2010 GW Benzene 0.5 U UG_L 0.25 1 N IR88-MW48IW 3839023.104 284323.108 10/5/2010 GW cis-1,2-Dichloroethene 16.3 UG_L 0.25 1 Y IR88-MW48IW 3839023.104 284323.108 10/5/2010 GW Tetrachloroethene 138 UG_L 0.25 1 Y IR88-MW48IW 3839023.104 284323.108 10/5/2010 GW Total organic carbon (TOC) 1380 UG_L 0.25 1000 Y IR88-MW48IW 3839023.104 284323.108 10/5/2010 GW Trichloroethene 47.2 UG_L 0.25 1 Y IR88-MW48IW 3839023.104 284323.108 10/5/2010 GW Vinyl chloride 0.5 U UG_L 0.25 1 N IR88-MW48IW 3839023.104 284323.108 1/19/2011 GW Benzene 0.5 U UG_L 0.25 1 N IR88-MW48IW 3839023.104 284323.108 1/19/2011 GW cis-1,2-Dichloroethene 15.7 UG_L 0.25 1 Y IR88-MW48IW 3839023.104 284323.108 1/19/2011 GW Tetrachloroethene 100 UG_L 0.25 1 Y IR88-MW48IW 3839023.104 284323.108 1/19/2011 GW Total organic carbon (TOC) 1530 UG_L 0.25 1000 Y IR88-MW48IW 3839023.104 284323.108 1/19/2011 GW Trichloroethene 41.2 UG_L 0.25 1 Y IR88-MW48IW 3839023.104 284323.108 1/19/2011 GW Vinyl chloride 0.5 U UG_L 0.25 1 N IR88-MW48IW 3839023.104 284323.108 4/7/2011 GW Benzene 0.5 U UG_L 0.25 1 0.5 N IR88-MW48IW 3839023.104 284323.108 4/7/2011 GW cis-1,2-Dichloroethene 16.7 UG_L 0.25 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 4/7/2011 GW Tetrachloroethene 113 UG_L 0.25 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 4/7/2011 GW Total organic carbon (TOC) 896 J UG_L 0.25 1000 0.5 Y IR88-MW48IW 3839023.104 284323.108 4/7/2011 GW Trichloroethene 50.8 UG_L 0.25 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 4/7/2011 GW Vinyl chloride 0.5 U UG_L 0.25 1 0.5 N IR88-MW48IW 3839023.104 284323.108 7/5/2011 GW Benzene 0.5 U UG_L 0.25 1 0.5 N IR88-MW48IW 3839023.104 284323.108 7/5/2011 GW cis-1,2-Dichloroethene 15.9 UG_L 0.25 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 7/5/2011 GW Tetrachloroethene 89.2 UG_L 0.25 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 7/5/2011 GW Trichloroethene 51.4 UG_L 0.25 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 7/5/2011 GW Vinyl chloride 0.5 U UG_L 0.25 1 0.5 N IR88-MW48IW 3839023.104 284323.108 7/6/2011 GW Total organic carbon (TOC) 1300 UG_L 0.25 1000 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/10/2011 GW Benzene 0.5 U UG_L 0.25 1 0.5 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW48IW 3839023.104 284323.108 10/10/2011 GW cis-1,2-Dichloroethene 12.8 UG_L 0.25 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/10/2011 GW Tetrachloroethene 91.2 UG_L 0.25 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/10/2011 GW Total organic carbon (TOC) 848 J UG_L 0.25 1000 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/10/2011 GW Trichloroethene 46 UG_L 0.25 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/10/2011 GW Vinyl chloride 0.5 U UG_L 0.25 1 0.5 N IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW Alkalinity 253000 UG_L 1 1000 1 Y IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW BAV1 R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW Benzene 0.5 U UG_L 0.25 1 0.5 N IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW Chloride 22600 UG_L 0.17 500 0.33 Y IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW cis-1,2-Dichloroethene 9.92 UG_L 0.25 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW Dehalococcoides 0.3 J CELLS_ML 0.1 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW Ethane 2 U UG_L 0.001 4 0.002 N IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW Ethene 2 U UG_L 0.001 4 0.002 N IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW Methane 55.6 UG_L 0.001 4 0.002 Y IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW Naphthalene 0.5 U UG_L 0.25 1 0.5 N IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW TCE R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW Tetrachloroethene 30.5 UG_L 0.25 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW Total organic carbon (TOC) 2500 U UG_L 1.25 3000 2.5 N IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW Trichloroethene 63.8 UG_L 0.25 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW VC R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW Vinyl chloride 0.5 U UG_L 0.25 1 0.5 N IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW Sulfide 1820 U UG_L 0.727 3640 1.82 N IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW Alkalinity 302 MG_L 0.26 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW BAV1 R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW Benzene 0.5 U UG_L 0.2 1 0.5 N IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW Chloride 22.9 MG_L 2.5 10 5 Y IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW cis-1,2-Dichloroethene 13.8 J UG_L 0.2 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW Dehalococcoides 19.1 CELLS_ML 0.1 0.5 Y IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW Ethane 0.00022 U MG_L 0.00011 0.001 0.00022 N IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW Ethene 0.00029 U MG_L 0.00015 0.001 0.00029 N IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW Methane 0.0307 MG_L 0.000435 0.002 0.00109 Y IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW Naphthalene 0.5 U UG_L 0.2 5 0.5 N IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW Nitrate 0.15 U MG_L 0.1 0.2 0.15 N IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW Nitrite 0.15 U MG_L 0.1 0.2 0.15 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW TCE R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW Tetrachloroethene 0.5 U UG_L 0.2 1 0.5 N IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW Total organic carbon (TOC) 1.44 J MG_L 0.3 2 1 Y IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW Trichloroethene 38.4 J UG_L 0.2 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW VC R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW Vinyl chloride 0.5 U UG_L 0.2 1 0.5 N IR88-MW48IW 3839023.104 284323.108 1/30/2019 GW Sulfide 1.5 U MG_L 1.08 2 1.5 N IR88-MW48IW 3839023.104 284323.108 12/5/2019 GW Alkalinity 430 MG_L 0.23 5 4 Y IR88-MW48IW 3839023.104 284323.108 12/5/2019 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW48IW 3839023.104 284323.108 12/5/2019 GW Chloride 16 MG_L 0.0993 2 1 Y IR88-MW48IW 3839023.104 284323.108 12/5/2019 GW cis-1,2-Dichloroethene 49 UG_L 0.21 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 12/5/2019 GW Dehalococcoides 11.2 CELLS_ML 0.05 0.3 Y IR88-MW48IW 3839023.104 284323.108 12/5/2019 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW48IW 3839023.104 284323.108 12/5/2019 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW48IW 3839023.104 284323.108 12/5/2019 GW Total organic carbon (TOC) 25 MG_L 0.1 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 12/5/2019 GW Trichloroethene 1.9 UG_L 0.28 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 12/5/2019 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW48IW 3839023.104 284323.108 12/5/2019 GW Vinyl chloride 0.25 J UG_L 0.017 0.1 0.05 Y IR88-MW48IW 3839023.104 284323.108 12/5/2019 GW cis-1,2-Dichloroethene 49 UG_L 0.21 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 12/5/2019 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW48IW 3839023.104 284323.108 12/5/2019 GW Trichloroethene 1.8 UG_L 0.28 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 12/5/2019 GW Vinyl chloride 0.21 UG_L 0.017 0.1 0.05 Y IR88-MW48IW 3839023.104 284323.108 12/5/2019 GW Sulfide 0.7 J MG_L 0.69 1 0.8 Y IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW Alkalinity 420 MG_L 0.23 5 4 Y IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW BAV1 R-Dase 0.4 U CELLS_ML 0.087 0.4 N IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW Chloride 16 MG_L 0.0993 2 1 Y IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW cis-1,2-Dichloroethene 50 UG_L 0.21 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW Dehalococcoides 45.2 CELLS_ML 0.087 0.4 Y IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW Methane 16 MG_L 0.048 0.25 0.12 Y IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW TCE R-Dase 0.4 U CELLS_ML 0.087 0.4 N IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW Total organic carbon (TOC) 20 MG_L 0.1 1 0.5 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW Trichloroethene 0.79 J UG_L 0.28 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW VC R-Dase 0.4 U CELLS_ML 0.087 0.4 N IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW Vinyl chloride 0.17 UG_L 0.017 0.1 0.05 Y IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW cis-1,2-Dichloroethene 53 UG_L 0.21 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW Trichloroethene 1.1 UG_L 0.28 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW Vinyl chloride 0.16 UG_L 0.017 0.1 0.05 Y IR88-MW48IW 3839023.104 284323.108 4/16/2020 GW Sulfide 1.1 MG_L 0.69 1 0.8 Y IR88-MW48IW 3839023.104 284323.108 10/30/2020 GW Alkalinity 370 MG_L 0.23 5 4 Y IR88-MW48IW 3839023.104 284323.108 10/30/2020 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW48IW 3839023.104 284323.108 10/30/2020 GW Chloride 17 MG_L 0.0993 2 1 Y IR88-MW48IW 3839023.104 284323.108 10/30/2020 GW cis-1,2-Dichloroethene 37 UG_L 0.21 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/30/2020 GW Dehalococcoides 15.5 CELLS_ML 0.05 0.3 Y IR88-MW48IW 3839023.104 284323.108 10/30/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW48IW 3839023.104 284323.108 10/30/2020 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW48IW 3839023.104 284323.108 10/30/2020 GW Methane 11 MG_L 0.048 0.25 0.12 Y IR88-MW48IW 3839023.104 284323.108 10/30/2020 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW48IW 3839023.104 284323.108 10/30/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW48IW 3839023.104 284323.108 10/30/2020 GW Total organic carbon (TOC) 1.9 MG_L 0.1 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/30/2020 GW Trichloroethene 0.54 J UG_L 0.28 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/30/2020 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW48IW 3839023.104 284323.108 10/30/2020 GW Vinyl chloride 0.11 UG_L 0.017 0.1 0.05 Y IR88-MW48IW 3839023.104 284323.108 10/30/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW48IW 3839023.104 284323.108 9/14/2021 GW Alkalinity 410 MG_L 0.23 5 4 Y IR88-MW48IW 3839023.104 284323.108 9/14/2021 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW48IW 3839023.104 284323.108 9/14/2021 GW Chloride 18 MG_L 0.099 2 1 Y IR88-MW48IW 3839023.104 284323.108 9/14/2021 GW cis-1,2-Dichloroethene 35 UG_L 0.21 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 9/14/2021 GW Dehalococcoides 20.6 CELLS_ML 0.05 0.3 Y IR88-MW48IW 3839023.104 284323.108 9/14/2021 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW48IW 3839023.104 284323.108 9/14/2021 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW48IW 3839023.104 284323.108 9/14/2021 GW Methane 5.2 L MG_L 0.039 0.2 0.1 Y IR88-MW48IW 3839023.104 284323.108 9/14/2021 GW Nitrate 0.047 J MG_L 0.017 0.05 0.025 Y IR88-MW48IW 3839023.104 284323.108 9/14/2021 GW Nitrite 0.46 MG_L 0.0092 0.05 0.025 Y IR88-MW48IW 3839023.104 284323.108 9/14/2021 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW48IW 3839023.104 284323.108 9/14/2021 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW48IW 3839023.104 284323.108 9/14/2021 GW Total organic carbon (TOC) 1.2 MG_L 0.1 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 9/14/2021 GW Trichloroethene 0.4 J UG_L 0.28 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 9/14/2021 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW48IW 3839023.104 284323.108 9/14/2021 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW48IW 3839023.104 284323.108 9/14/2021 GW Sulfide 2.9 MG_L 0.69 1 0.8 Y IR88-MW48IW 3839023.104 284323.108 2/24/2022 GW Alkalinity 390 MG_L 0.23 5 4 Y IR88-MW48IW 3839023.104 284323.108 2/24/2022 GW BAV1 R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW48IW 3839023.104 284323.108 2/24/2022 GW Chloride 17 MG_L 0.099 2 1 Y IR88-MW48IW 3839023.104 284323.108 2/24/2022 GW cis-1,2-Dichloroethene 34 UG_L 0.21 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 2/24/2022 GW Dehalococcoides 12.8 CELLS_ML 0.1 0.5 Y IR88-MW48IW 3839023.104 284323.108 2/24/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW48IW 3839023.104 284323.108 2/24/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW48IW 3839023.104 284323.108 2/24/2022 GW Methane 8.8 MG_L 0.039 0.2 0.1 Y IR88-MW48IW 3839023.104 284323.108 2/24/2022 GW Nitrate 0.038 J MG_L 0.017 0.05 0.025 Y IR88-MW48IW 3839023.104 284323.108 2/24/2022 GW Nitrite 0.54 MG_L 0.0092 0.05 0.025 Y IR88-MW48IW 3839023.104 284323.108 2/24/2022 GW TCE R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW48IW 3839023.104 284323.108 2/24/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW48IW 3839023.104 284323.108 2/24/2022 GW Total organic carbon (TOC) 1.6 MG_L 0.1 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 2/24/2022 GW Trichloroethene 0.58 J UG_L 0.28 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 2/24/2022 GW VC R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW48IW 3839023.104 284323.108 2/24/2022 GW Vinyl chloride 0.12 UG_L 0.017 0.1 0.05 Y IR88-MW48IW 3839023.104 284323.108 2/24/2022 GW Sulfide 1.1 MG_L 0.69 1 0.8 Y IR88-MW48IW 3839023.104 284323.108 8/18/2022 GW Alkalinity 320 MG_L 0.23 5 4 Y IR88-MW48IW 3839023.104 284323.108 8/18/2022 GW Chloride 17 MG_L 0.099 2 1 Y IR88-MW48IW 3839023.104 284323.108 8/18/2022 GW cis-1,2-Dichloroethene 32 J UG_L 0.21 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 8/18/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW48IW 3839023.104 284323.108 8/18/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW48IW 3839023.104 284323.108 8/18/2022 GW Methane 4.3 MG_L 0.039 0.2 0.1 Y IR88-MW48IW 3839023.104 284323.108 8/18/2022 GW Nitrate 0.038 J MG_L 0.017 0.05 0.025 Y IR88-MW48IW 3839023.104 284323.108 8/18/2022 GW Nitrite 0.12 MG_L 0.0092 0.05 0.025 Y IR88-MW48IW 3839023.104 284323.108 8/18/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW48IW 3839023.104 284323.108 8/18/2022 GW Total organic carbon (TOC) 1.3 MG_L 0.37 1 0.75 Y IR88-MW48IW 3839023.104 284323.108 8/18/2022 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW48IW 3839023.104 284323.108 8/18/2022 GW Vinyl chloride 0.068 J UG_L 0.017 0.1 0.05 Y IR88-MW48IW 3839023.104 284323.108 8/18/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW48IW 3839023.104 284323.108 10/5/2010 GW Benzene 0.5 U UG_L 0.25 1 N IR88-MW48IW 3839023.104 284323.108 10/5/2010 GW cis-1,2-Dichloroethene 16.5 UG_L 0.25 1 Y IR88-MW48IW 3839023.104 284323.108 10/5/2010 GW Tetrachloroethene 142 UG_L 0.25 1 Y IR88-MW48IW 3839023.104 284323.108 10/5/2010 GW Trichloroethene 47.2 UG_L 0.25 1 Y IR88-MW48IW 3839023.104 284323.108 10/5/2010 GW Vinyl chloride 0.5 U UG_L 0.25 1 N IR88-MW48IW 3839023.104 284323.108 10/10/2011 GW Benzene 0.5 U UG_L 0.25 1 0.5 N IR88-MW48IW 3839023.104 284323.108 10/10/2011 GW cis-1,2-Dichloroethene 12.3 UG_L 0.25 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/10/2011 GW Tetrachloroethene 83.6 UG_L 0.25 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/10/2011 GW Trichloroethene 43.8 UG_L 0.25 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/10/2011 GW Vinyl chloride 0.5 U UG_L 0.25 1 0.5 N IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW Benzene 0.5 U UG_L 0.25 1 0.5 N IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW cis-1,2-Dichloroethene 10.4 UG_L 0.25 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW Naphthalene 0.5 U UG_L 0.25 1 0.5 N IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW Tetrachloroethene 33 UG_L 0.25 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW Trichloroethene 52.9 UG_L 0.25 1 0.5 Y IR88-MW48IW 3839023.104 284323.108 10/21/2014 GW Vinyl chloride 0.5 U UG_L 0.25 1 0.5 N IR88-MW49IW 3839007.668 284326.561 10/8/2010 GW Benzene 0.5 U UG_L 0.25 1 N IR88-MW49IW 3839007.668 284326.561 10/8/2010 GW cis-1,2-Dichloroethene 4.08 UG_L 0.25 1 Y IR88-MW49IW 3839007.668 284326.561 10/8/2010 GW Tetrachloroethene 8.44 UG_L 0.25 1 Y IR88-MW49IW 3839007.668 284326.561 10/8/2010 GW Total organic carbon (TOC) 1820 UG_L 0.25 1000 Y IR88-MW49IW 3839007.668 284326.561 10/8/2010 GW Trichloroethene 16.6 UG_L 0.25 1 Y IR88-MW49IW 3839007.668 284326.561 10/8/2010 GW Vinyl chloride 0.5 Q, U UG_L 0.25 1 N IR88-MW49IW 3839007.668 284326.561 1/19/2011 GW Benzene 0.5 U UG_L 0.25 1 N IR88-MW49IW 3839007.668 284326.561 1/19/2011 GW cis-1,2-Dichloroethene 5.67 UG_L 0.25 1 Y IR88-MW49IW 3839007.668 284326.561 1/19/2011 GW Tetrachloroethene 3.64 UG_L 0.25 1 Y IR88-MW49IW 3839007.668 284326.561 1/19/2011 GW Total organic carbon (TOC) 1350 UG_L 0.25 1000 Y IR88-MW49IW 3839007.668 284326.561 1/19/2011 GW Trichloroethene 20 UG_L 0.25 1 Y IR88-MW49IW 3839007.668 284326.561 1/19/2011 GW Vinyl chloride 0.5 U UG_L 0.25 1 N IR88-MW49IW 3839007.668 284326.561 4/5/2011 GW Benzene 0.5 U UG_L 0.25 1 0.5 N IR88-MW49IW 3839007.668 284326.561 4/5/2011 GW cis-1,2-Dichloroethene 7.52 UG_L 0.25 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 4/5/2011 GW Tetrachloroethene 24.6 UG_L 0.25 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 4/5/2011 GW Total organic carbon (TOC) 1180 UG_L 0.25 1000 0.5 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW49IW 3839007.668 284326.561 4/5/2011 GW Trichloroethene 18.1 UG_L 0.25 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 4/5/2011 GW Vinyl chloride 0.5 U UG_L 0.25 1 0.5 N IR88-MW49IW 3839007.668 284326.561 7/5/2011 GW Benzene 0.5 U UG_L 0.25 1 0.5 N IR88-MW49IW 3839007.668 284326.561 7/5/2011 GW cis-1,2-Dichloroethene 8.07 UG_L 0.25 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 7/5/2011 GW Tetrachloroethene 1.75 UG_L 0.25 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 7/5/2011 GW Trichloroethene 19 UG_L 0.25 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 7/5/2011 GW Vinyl chloride 0.5 U UG_L 0.25 1 0.5 N IR88-MW49IW 3839007.668 284326.561 7/6/2011 GW Total organic carbon (TOC) 7780 UG_L 0.25 1000 0.5 Y IR88-MW49IW 3839007.668 284326.561 10/10/2011 GW Benzene 0.5 U UG_L 0.25 1 0.5 N IR88-MW49IW 3839007.668 284326.561 10/10/2011 GW cis-1,2-Dichloroethene 5.88 UG_L 0.25 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 10/10/2011 GW Tetrachloroethene 1.56 U UG_L 0.25 1 0.5 N IR88-MW49IW 3839007.668 284326.561 10/10/2011 GW Total organic carbon (TOC) 1070 UG_L 0.25 1000 0.5 Y IR88-MW49IW 3839007.668 284326.561 10/10/2011 GW Trichloroethene 15.4 UG_L 0.25 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 10/10/2011 GW Vinyl chloride 0.5 U UG_L 0.25 1 0.5 N IR88-MW49IW 3839007.668 284326.561 10/22/2014 GW Benzene 0.5 U UG_L 0.25 1 0.5 N IR88-MW49IW 3839007.668 284326.561 10/22/2014 GW cis-1,2-Dichloroethene 0.333 J UG_L 0.25 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 10/22/2014 GW Naphthalene 0.5 U UG_L 0.25 1 0.5 N IR88-MW49IW 3839007.668 284326.561 10/22/2014 GW Tetrachloroethene 1.59 UG_L 0.25 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 10/22/2014 GW Trichloroethene 1.79 UG_L 0.25 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 10/22/2014 GW Vinyl chloride 0.5 U UG_L 0.25 1 0.5 N IR88-MW49IW 3839007.668 284326.561 2/4/2019 GW Benzene 0.5 UJ UG_L 0.2 1 0.5 N IR88-MW49IW 3839007.668 284326.561 2/4/2019 GW cis-1,2-Dichloroethene 3.88 J UG_L 0.2 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 2/4/2019 GW Naphthalene 0.5 UJ UG_L 0.2 5 0.5 N IR88-MW49IW 3839007.668 284326.561 2/4/2019 GW Tetrachloroethene 0.5 UJ UG_L 0.2 1 0.5 N IR88-MW49IW 3839007.668 284326.561 2/4/2019 GW Trichloroethene 18.1 J UG_L 0.2 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 2/4/2019 GW Vinyl chloride 0.5 UJ UG_L 0.2 1 0.5 N IR88-MW49IW 3839007.668 284326.561 12/3/2019 GW cis-1,2-Dichloroethene 3.1 UG_L 0.21 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 12/3/2019 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW49IW 3839007.668 284326.561 12/3/2019 GW Trichloroethene 17 UG_L 0.28 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 12/3/2019 GW Vinyl chloride 0.036 J UG_L 0.017 0.1 0.05 Y IR88-MW49IW 3839007.668 284326.561 4/15/2020 GW cis-1,2-Dichloroethene 3.1 UG_L 0.21 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 4/15/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW49IW 3839007.668 284326.561 4/15/2020 GW Trichloroethene 16 UG_L 0.28 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 4/15/2020 GW Vinyl chloride 0.018 J UG_L 0.017 0.1 0.05 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW49IW 3839007.668 284326.561 11/4/2020 GW cis-1,2-Dichloroethene 2.1 UG_L 0.21 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 11/4/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW49IW 3839007.668 284326.561 11/4/2020 GW Trichloroethene 12 UG_L 0.28 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 11/4/2020 GW Vinyl chloride 0.023 J UG_L 0.017 0.1 0.05 Y IR88-MW49IW 3839007.668 284326.561 9/13/2021 GW cis-1,2-Dichloroethene 2.5 UG_L 0.21 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 9/13/2021 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW49IW 3839007.668 284326.561 9/13/2021 GW Trichloroethene 6.7 UG_L 0.28 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 9/13/2021 GW Vinyl chloride 0.054 J UG_L 0.017 0.1 0.05 Y IR88-MW49IW 3839007.668 284326.561 2/15/2022 GW cis-1,2-Dichloroethene 3 J UG_L 0.21 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 2/15/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW49IW 3839007.668 284326.561 2/15/2022 GW Trichloroethene 3.7 J UG_L 0.28 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 2/15/2022 GW Vinyl chloride 0.023 J UG_L 0.017 0.1 0.05 Y IR88-MW49IW 3839007.668 284326.561 8/23/2022 GW cis-1,2-Dichloroethene 2 J UG_L 0.21 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 8/23/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW49IW 3839007.668 284326.561 8/23/2022 GW Trichloroethene 4.2 J UG_L 0.28 1 0.5 Y IR88-MW49IW 3839007.668 284326.561 8/23/2022 GW Vinyl chloride 0.018 J UG_L 0.017 0.1 0.05 Y IR88-MW54IW 3839159.211 284734.165 9/17/2010 GW Benzene 0.09 J UG_L 0.03 0.5 Y IR88-MW54IW 3839159.211 284734.165 9/17/2010 GW cis-1,2-Dichloroethene 45 JD UG_L 3.8 63 Y IR88-MW54IW 3839159.211 284734.165 9/17/2010 GW Tetrachloroethene 4200 D UG_L 7.5 63 Y IR88-MW54IW 3839159.211 284734.165 9/17/2010 GW Trichloroethene 320 D UG_L 3.8 63 Y IR88-MW54IW 3839159.211 284734.165 9/17/2010 GW Vinyl chloride 0.45 J UG_L 0.07 0.5 Y IR88-MW54IW 3839159.211 284734.165 10/7/2010 GW Benzene 25 U UG_L 12.5 50 N IR88-MW54IW 3839159.211 284734.165 10/7/2010 GW cis-1,2-Dichloroethene 118 D UG_L 12.5 50 Y IR88-MW54IW 3839159.211 284734.165 10/7/2010 GW Dehalobacter 433000 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 10/7/2010 GW Dehalococcoides 0.5 U GC_ML 0.1 0.5 N IR88-MW54IW 3839159.211 284734.165 10/7/2010 GW Desulfuromonas 661 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 10/7/2010 GW Methane Oxidizing Bacteria 1320 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 10/7/2010 GW Tetrachloroethene 4400 D UG_L 12.5 50 Y IR88-MW54IW 3839159.211 284734.165 10/7/2010 GW Toluene Dioxygenase 3950 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 10/7/2010 GW Trichloroethene 362 D UG_L 12.5 50 Y IR88-MW54IW 3839159.211 284734.165 10/7/2010 GW Vinyl chloride 25 U UG_L 12.5 50 N IR88-MW54IW 3839159.211 284734.165 1/19/2011 GW Benzene 50 U UG_L 25 100 N IR88-MW54IW 3839159.211 284734.165 1/19/2011 GW cis-1,2-Dichloroethene 226 D UG_L 25 100 Y IR88-MW54IW 3839159.211 284734.165 1/19/2011 GW Dehalobacter 1170000 GC_ML 0.1 1 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW54IW 3839159.211 284734.165 1/19/2011 GW Dehalococcoides 579 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 1/19/2011 GW Desulfuromonas 3000000 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 1/19/2011 GW Methane Oxidizing Bacteria 53700 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 1/19/2011 GW Tetrachloroethene 12600 D UG_L 25 100 Y IR88-MW54IW 3839159.211 284734.165 1/19/2011 GW Toluene Dioxygenase 207000 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 1/19/2011 GW Trichloroethene 867 D UG_L 25 100 Y IR88-MW54IW 3839159.211 284734.165 1/19/2011 GW Vinyl chloride 50 U UG_L 25 100 N IR88-MW54IW 3839159.211 284734.165 4/6/2011 GW Benzene 100 U UG_L 50 200 100 N IR88-MW54IW 3839159.211 284734.165 4/6/2011 GW Benzyl Succinante Synthase 1 U GC_ML 0.1 1 N IR88-MW54IW 3839159.211 284734.165 4/6/2011 GW cis-1,2-Dichloroethene 586 D UG_L 50 200 100 Y IR88-MW54IW 3839159.211 284734.165 4/6/2011 GW Dehalobacter 143000 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 4/6/2011 GW Dehalococcoides 14.9 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 4/6/2011 GW Desulfuromonas 752000 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 4/6/2011 GW Methane Oxidizing Bacteria 341 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 4/6/2011 GW Tetrachloroethene 11600 D UG_L 50 200 100 Y IR88-MW54IW 3839159.211 284734.165 4/6/2011 GW Trichloroethene 1110 D UG_L 50 200 100 Y IR88-MW54IW 3839159.211 284734.165 4/6/2011 GW Vinyl chloride 100 U UG_L 50 200 100 N IR88-MW54IW 3839159.211 284734.165 7/7/2011 GW Benzene 100 U UG_L 50 200 100 N IR88-MW54IW 3839159.211 284734.165 7/7/2011 GW cis-1,2-Dichloroethene 493 D UG_L 50 200 100 Y IR88-MW54IW 3839159.211 284734.165 7/7/2011 GW Dehalobacter 59000 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 7/7/2011 GW Dehalococcoides 406 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 7/7/2011 GW Desulfuromonas 1410000 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 7/7/2011 GW Methane Oxidizing Bacteria 7100000 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 7/7/2011 GW Tetrachloroethene 13800 D UG_L 50 200 100 Y IR88-MW54IW 3839159.211 284734.165 7/7/2011 GW Toluene Dioxygenase 675000 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 7/7/2011 GW Trichloroethene 1330 D UG_L 50 200 100 Y IR88-MW54IW 3839159.211 284734.165 7/7/2011 GW Vinyl chloride 100 U UG_L 50 200 100 N IR88-MW54IW 3839159.211 284734.165 10/12/2011 GW Benzene 50 U UG_L 25 100 50 N IR88-MW54IW 3839159.211 284734.165 10/12/2011 GW cis-1,2-Dichloroethene 435 UG_L 25 100 50 Y IR88-MW54IW 3839159.211 284734.165 10/12/2011 GW Dehalobacter 103000 GC_ML 0.1 3 Y IR88-MW54IW 3839159.211 284734.165 10/12/2011 GW Dehalococcoides 68.9 GC_ML 0.1 0.5 Y IR88-MW54IW 3839159.211 284734.165 10/12/2011 GW Desulfuromonas 650000 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 10/12/2011 GW Methane Oxidizing Bacteria 583000 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 10/12/2011 GW Tetrachloroethene 12800 UG_L 25 100 50 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW54IW 3839159.211 284734.165 10/12/2011 GW Toluene Dioxygenase 2450 GC_ML 0.1 1 Y IR88-MW54IW 3839159.211 284734.165 10/12/2011 GW Trichloroethene 1100 UG_L 25 100 50 Y IR88-MW54IW 3839159.211 284734.165 10/12/2011 GW Vinyl chloride 50 U UG_L 25 100 50 N IR88-MW54IW 3839159.211 284734.165 10/22/2014 GW Benzene 0.814 J UG_L 0.625 2.5 1.25 Y IR88-MW54IW 3839159.211 284734.165 10/22/2014 GW cis-1,2-Dichloroethene 334 UG_L 0.625 2.5 1.25 Y IR88-MW54IW 3839159.211 284734.165 10/22/2014 GW Naphthalene 1.25 U UG_L 0.625 2.5 1.25 N IR88-MW54IW 3839159.211 284734.165 10/22/2014 GW Tetrachloroethene 3.87 UG_L 0.625 2.5 1.25 Y IR88-MW54IW 3839159.211 284734.165 10/22/2014 GW Trichloroethene 2.82 UG_L 0.625 2.5 1.25 Y IR88-MW54IW 3839159.211 284734.165 10/22/2014 GW Vinyl chloride 1.25 U UG_L 0.625 2.5 1.25 N IR88-MW54IW 3839159.211 284734.165 11/6/2020 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW54IW 3839159.211 284734.165 11/6/2020 GW cis-1,2-Dichloroethene 1600 J UG_L 10 50 25 Y IR88-MW54IW 3839159.211 284734.165 11/6/2020 GW Naphthalene 1.1 U UG_L 0.3 1 0.5 N IR88-MW54IW 3839159.211 284734.165 11/6/2020 GW Tetrachloroethene 550 J UG_L 20 50 25 Y IR88-MW54IW 3839159.211 284734.165 11/6/2020 GW Trichloroethene 260 J UG_L 14 50 25 Y IR88-MW54IW 3839159.211 284734.165 11/6/2020 GW Vinyl chloride 0.42 J UG_L 0.017 0.1 0.05 Y IR88-MW54IW 3839159.211 284734.165 9/9/2021 GW Benzene 2.5 U UG_L 1.3 5 2.5 N IR88-MW54IW 3839159.211 284734.165 9/9/2021 GW cis-1,2-Dichloroethene 2900 UG_L 10 50 25 Y IR88-MW54IW 3839159.211 284734.165 9/9/2021 GW Naphthalene 2.5 U UG_L 1.5 5 2.5 N IR88-MW54IW 3839159.211 284734.165 9/9/2021 GW Tetrachloroethene 880 UG_L 20 50 25 Y IR88-MW54IW 3839159.211 284734.165 9/9/2021 GW Trichloroethene 630 UG_L 1.4 5 2.5 Y IR88-MW54IW 3839159.211 284734.165 9/9/2021 GW Vinyl chloride 1.4 UG_L 0.017 0.1 0.05 Y IR88-MW54IW 3839159.211 284734.165 2/15/2022 GW Benzene 2.5 UJ UG_L 1.3 5 2.5 N IR88-MW54IW 3839159.211 284734.165 2/15/2022 GW cis-1,2-Dichloroethene 2100 J UG_L 10 50 25 Y IR88-MW54IW 3839159.211 284734.165 2/15/2022 GW Naphthalene 2.5 UJ UG_L 1.5 5 2.5 N IR88-MW54IW 3839159.211 284734.165 2/15/2022 GW Tetrachloroethene 1300 J UG_L 20 50 25 Y IR88-MW54IW 3839159.211 284734.165 2/15/2022 GW Trichloroethene 1100 J UG_L 14 50 25 Y IR88-MW54IW 3839159.211 284734.165 2/15/2022 GW Vinyl chloride 10 J UG_L 1.2 10 5 Y IR88-MW54IW 3839159.211 284734.165 8/22/2022 GW Benzene 1 U UG_L 0.52 2 1 N IR88-MW54IW 3839159.211 284734.165 8/22/2022 GW cis-1,2-Dichloroethene 620 UG_L 4.2 20 10 Y IR88-MW54IW 3839159.211 284734.165 8/22/2022 GW Naphthalene 1 U UG_L 0.6 2 1 N IR88-MW54IW 3839159.211 284734.165 8/22/2022 GW Tetrachloroethene 1700 UG_L 8 20 10 Y IR88-MW54IW 3839159.211 284734.165 8/22/2022 GW Trichloroethene 800 UG_L 5.6 20 10 Y IR88-MW54IW 3839159.211 284734.165 8/22/2022 GW Vinyl chloride 1.1 J UG_L 0.17 1 0.5 Y IR88-MW56IW 3839151.38 284688.687 10/7/2010 GW Benzene 200 U UG_L 100 400 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW56IW 3839151.38 284688.687 10/7/2010 GW cis-1,2-Dichloroethene 455 D UG_L 100 400 Y IR88-MW56IW 3839151.38 284688.687 10/7/2010 GW Tetrachloroethene 64200 D UG_L 100 400 Y IR88-MW56IW 3839151.38 284688.687 10/7/2010 GW Trichloroethene 209 J, D UG_L 100 400 Y IR88-MW56IW 3839151.38 284688.687 10/7/2010 GW Vinyl chloride 200 U UG_L 100 400 N IR88-MW56IW 3839151.38 284688.687 1/21/2011 GW Benzene 5000 U UG_L 2500 10000 N IR88-MW56IW 3839151.38 284688.687 1/21/2011 GW cis-1,2-Dichloroethene 5000 U UG_L 2500 10000 N IR88-MW56IW 3839151.38 284688.687 1/21/2011 GW Tetrachloroethene 125000 D UG_L 2500 10000 Y IR88-MW56IW 3839151.38 284688.687 1/21/2011 GW Trichloroethene 5000 U UG_L 2500 10000 N IR88-MW56IW 3839151.38 284688.687 1/21/2011 GW Vinyl chloride 5000 U UG_L 2500 10000 N IR88-MW56IW 3839151.38 284688.687 4/6/2011 GW Benzene 100 U UG_L 50 200 100 N IR88-MW56IW 3839151.38 284688.687 4/6/2011 GW cis-1,2-Dichloroethene 468 D UG_L 50 200 100 Y IR88-MW56IW 3839151.38 284688.687 4/6/2011 GW Tetrachloroethene 146000 D, H1 UG_L 250 1000 500 Y IR88-MW56IW 3839151.38 284688.687 4/6/2011 GW Trichloroethene 465 D UG_L 50 200 100 Y IR88-MW56IW 3839151.38 284688.687 4/6/2011 GW Vinyl chloride 100 U UG_L 50 200 100 N IR88-MW56IW 3839151.38 284688.687 7/6/2011 GW Benzene 500 U UG_L 250 1000 500 N IR88-MW56IW 3839151.38 284688.687 7/6/2011 GW cis-1,2-Dichloroethene 591 J, D UG_L 250 1000 500 Y IR88-MW56IW 3839151.38 284688.687 7/6/2011 GW Tetrachloroethene 129000 D UG_L 250 1000 500 Y IR88-MW56IW 3839151.38 284688.687 7/6/2011 GW Trichloroethene 615 J, D UG_L 250 1000 500 Y IR88-MW56IW 3839151.38 284688.687 7/6/2011 GW Vinyl chloride 500 U UG_L 250 1000 500 N IR88-MW56IW 3839151.38 284688.687 10/11/2011 GW Benzene 500 U UG_L 250 1000 500 N IR88-MW56IW 3839151.38 284688.687 10/11/2011 GW cis-1,2-Dichloroethene 483 J UG_L 250 1000 500 Y IR88-MW56IW 3839151.38 284688.687 10/11/2011 GW Tetrachloroethene 134000 UG_L 250 1000 500 Y IR88-MW56IW 3839151.38 284688.687 10/11/2011 GW Trichloroethene 430 J UG_L 250 1000 500 Y IR88-MW56IW 3839151.38 284688.687 10/11/2011 GW Vinyl chloride 500 U UG_L 250 1000 500 N IR88-MW56IW 3839151.38 284688.687 10/22/2014 GW Benzene 250 U UG_L 125 500 250 N IR88-MW56IW 3839151.38 284688.687 10/22/2014 GW cis-1,2-Dichloroethene 159 J UG_L 125 500 250 Y IR88-MW56IW 3839151.38 284688.687 10/22/2014 GW Naphthalene 250 U UG_L 125 500 250 N IR88-MW56IW 3839151.38 284688.687 10/22/2014 GW Tetrachloroethene 98000 UG_L 125 500 250 Y IR88-MW56IW 3839151.38 284688.687 10/22/2014 GW Trichloroethene 346 J UG_L 125 500 250 Y IR88-MW56IW 3839151.38 284688.687 10/22/2014 GW Vinyl chloride 250 U UG_L 125 500 250 N IR88-MW56IW 3839151.38 284688.687 11/6/2020 GW Benzene 50 UJ UG_L 26 100 50 N IR88-MW56IW 3839151.38 284688.687 11/6/2020 GW cis-1,2-Dichloroethene 50 UJ UG_L 21 100 50 N IR88-MW56IW 3839151.38 284688.687 11/6/2020 GW Naphthalene 50 UJ UG_L 30 100 50 N IR88-MW56IW 3839151.38 284688.687 11/6/2020 GW Tetrachloroethene 120000 J UG_L 800 2000 1000 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW56IW 3839151.38 284688.687 11/6/2020 GW Trichloroethene 160 J UG_L 28 100 50 Y IR88-MW56IW 3839151.38 284688.687 11/6/2020 GW Vinyl chloride 100 UJ UG_L 25 200 100 N IR88-MW56IW 3839151.38 284688.687 9/8/2021 GW Benzene 200 U UG_L 100 400 200 N IR88-MW56IW 3839151.38 284688.687 9/8/2021 GW cis-1,2-Dichloroethene 290 J UG_L 84 400 200 Y IR88-MW56IW 3839151.38 284688.687 9/8/2021 GW Naphthalene 200 U UG_L 120 400 200 N IR88-MW56IW 3839151.38 284688.687 9/8/2021 GW Tetrachloroethene 110000 UG_L 1600 4000 2000 Y IR88-MW56IW 3839151.38 284688.687 9/8/2021 GW Trichloroethene 200 U UG_L 110 400 200 N IR88-MW56IW 3839151.38 284688.687 9/8/2021 GW Vinyl chloride 400 U UG_L 100 800 400 N IR88-MW56IW 3839151.38 284688.687 8/22/2022 GW Benzene 5 U UG_L 2.6 10 5 N IR88-MW56IW 3839151.38 284688.687 8/22/2022 GW cis-1,2-Dichloroethene 210 J UG_L 2.1 10 5 Y IR88-MW56IW 3839151.38 284688.687 8/22/2022 GW Naphthalene 5 U UG_L 3 10 5 N IR88-MW56IW 3839151.38 284688.687 8/22/2022 GW Tetrachloroethene 9200 J UG_L 40 100 50 Y IR88-MW56IW 3839151.38 284688.687 8/22/2022 GW Trichloroethene 130 J UG_L 2.8 10 5 Y IR88-MW56IW 3839151.38 284688.687 8/22/2022 GW Vinyl chloride 5.6 J UG_L 2.5 20 10 Y IR88-MW58 3839140.899 284745.205 10/31/2016 GW Benzene 5 U UG_L 2.5 10 5 N IR88-MW58 3839140.899 284745.205 10/31/2016 GW cis-1,2-Dichloroethene 38.4 UG_L 2.5 10 5 Y IR88-MW58 3839140.899 284745.205 10/31/2016 GW Tetrachloroethene 479 UG_L 2.5 10 5 Y IR88-MW58 3839140.899 284745.205 10/31/2016 GW Trichloroethene 26.2 UG_L 2.5 10 5 Y IR88-MW58 3839140.899 284745.205 10/31/2016 GW Vinyl chloride 5 U UG_L 2.5 10 5 N IR88-MW58 3839140.899 284745.205 9/22/2021 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW58 3839140.899 284745.205 9/22/2021 GW cis-1,2-Dichloroethene 310 UG_L 1 5 2.5 Y IR88-MW58 3839140.899 284745.205 9/22/2021 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW58 3839140.899 284745.205 9/22/2021 GW Tetrachloroethene 320 UG_L 2 5 2.5 Y IR88-MW58 3839140.899 284745.205 9/22/2021 GW Trichloroethene 160 UG_L 1.4 5 2.5 Y IR88-MW58 3839140.899 284745.205 9/22/2021 GW Vinyl chloride 14 UG_L 0.25 2 1 Y IR88-MW58 3839140.899 284745.205 3/4/2022 GW Alkalinity 250 MG_L 0.23 5 4 Y IR88-MW58 3839140.899 284745.205 3/4/2022 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW58 3839140.899 284745.205 3/4/2022 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW58 3839140.899 284745.205 3/4/2022 GW Chloride 18 MG_L 0.099 2 1 Y IR88-MW58 3839140.899 284745.205 3/4/2022 GW cis-1,2-Dichloroethene 230 UG_L 0.42 2 1 Y IR88-MW58 3839140.899 284745.205 3/4/2022 GW Dehalococcoides 1.6 CELLS_ML 0.05 0.3 Y IR88-MW58 3839140.899 284745.205 3/4/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW58 3839140.899 284745.205 3/4/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW58 3839140.899 284745.205 3/4/2022 GW Methane 0.28 MG_L 0.0019 0.01 0.005 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW58 3839140.899 284745.205 3/4/2022 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW58 3839140.899 284745.205 3/4/2022 GW Nitrate 0.18 MG_L 0.017 0.05 0.025 Y IR88-MW58 3839140.899 284745.205 3/4/2022 GW Nitrite 0.44 MG_L 0.0092 0.05 0.025 Y IR88-MW58 3839140.899 284745.205 3/4/2022 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW58 3839140.899 284745.205 3/4/2022 GW Tetrachloroethene 110 UG_L 0.4 1 0.5 Y IR88-MW58 3839140.899 284745.205 3/4/2022 GW Total organic carbon (TOC) 1.7 MG_L 0.1 1 0.5 Y IR88-MW58 3839140.899 284745.205 3/4/2022 GW Trichloroethene 64 UG_L 0.28 1 0.5 Y IR88-MW58 3839140.899 284745.205 3/4/2022 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW58 3839140.899 284745.205 3/4/2022 GW Vinyl chloride 3.7 UG_L 0.25 2 1 Y IR88-MW58 3839140.899 284745.205 3/4/2022 GW Sulfide 0.82 J MG_L 0.69 1 0.8 Y IR88-MW58 3839140.899 284745.205 8/22/2022 GW Alkalinity 240 MG_L 0.23 5 4 Y IR88-MW58 3839140.899 284745.205 8/22/2022 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW58 3839140.899 284745.205 8/22/2022 GW Chloride 15 MG_L 0.099 2 1 Y IR88-MW58 3839140.899 284745.205 8/22/2022 GW cis-1,2-Dichloroethene 240 UG_L 0.84 4 2 Y IR88-MW58 3839140.899 284745.205 8/22/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW58 3839140.899 284745.205 8/22/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW58 3839140.899 284745.205 8/22/2022 GW Methane 0.37 MG_L 0.0019 0.01 0.005 Y IR88-MW58 3839140.899 284745.205 8/22/2022 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW58 3839140.899 284745.205 8/22/2022 GW Nitrate 0.23 MG_L 0.017 0.05 0.025 Y IR88-MW58 3839140.899 284745.205 8/22/2022 GW Nitrite 0.38 MG_L 0.0092 0.05 0.025 Y IR88-MW58 3839140.899 284745.205 8/22/2022 GW Tetrachloroethene 37 J UG_L 0.4 1 0.5 Y IR88-MW58 3839140.899 284745.205 8/22/2022 GW Total organic carbon (TOC) 1.5 MG_L 0.37 1 0.75 Y IR88-MW58 3839140.899 284745.205 8/22/2022 GW Trichloroethene 20 J UG_L 0.28 1 0.5 Y IR88-MW58 3839140.899 284745.205 8/22/2022 GW Vinyl chloride 5.3 UG_L 0.085 0.5 0.25 Y IR88-MW58 3839140.899 284745.205 8/22/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW60 3839104.36 284797.792 2/1/2019 GW Benzene 0.5 U UG_L 0.2 1 0.5 N IR88-MW60 3839104.36 284797.792 2/1/2019 GW cis-1,2-Dichloroethene 36.6 J UG_L 0.2 1 0.5 Y IR88-MW60 3839104.36 284797.792 2/1/2019 GW Naphthalene 0.5 UJ UG_L 0.2 5 0.5 N IR88-MW60 3839104.36 284797.792 2/1/2019 GW Tetrachloroethene 133 J UG_L 0.2 1 0.5 Y IR88-MW60 3839104.36 284797.792 2/1/2019 GW Trichloroethene 24 J UG_L 0.2 1 0.5 Y IR88-MW60 3839104.36 284797.792 2/1/2019 GW Vinyl chloride 0.5 U UG_L 0.2 1 0.5 N IR88-MW63UCH 3839009.537 284162.144 10/31/2016 GW Benzene 0.5 U UG_L 0.25 1 0.5 N IR88-MW63UCH 3839009.537 284162.144 10/31/2016 GW cis-1,2-Dichloroethene 6.84 UG_L 0.25 1 0.5 Y IR88-MW63UCH 3839009.537 284162.144 10/31/2016 GW Tetrachloroethene 0.5 U UG_L 0.25 1 0.5 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW63UCH 3839009.537 284162.144 10/31/2016 GW Trichloroethene 1.67 UG_L 0.25 1 0.5 Y IR88-MW63UCH 3839009.537 284162.144 10/31/2016 GW Vinyl chloride 0.5 U UG_L 0.25 1 0.5 N IR88-MW63UCH 3839009.537 284162.144 2/4/2019 GW Benzene 0.5 U UG_L 0.2 1 0.5 N IR88-MW63UCH 3839009.537 284162.144 2/4/2019 GW cis-1,2-Dichloroethene 12.3 UG_L 0.2 1 0.5 Y IR88-MW63UCH 3839009.537 284162.144 2/4/2019 GW Naphthalene 0.5 U UG_L 0.2 5 0.5 N IR88-MW63UCH 3839009.537 284162.144 2/4/2019 GW Tetrachloroethene 0.5 U UG_L 0.2 1 0.5 N IR88-MW63UCH 3839009.537 284162.144 2/4/2019 GW Trichloroethene 2.52 UG_L 0.2 1 0.5 Y IR88-MW63UCH 3839009.537 284162.144 2/4/2019 GW Vinyl chloride 0.5 U UG_L 0.2 1 0.5 N IR88-MW63UCH 3839009.537 284162.144 12/3/2019 GW cis-1,2-Dichloroethene 7.2 UG_L 0.21 1 0.5 Y IR88-MW63UCH 3839009.537 284162.144 12/3/2019 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW63UCH 3839009.537 284162.144 12/3/2019 GW Trichloroethene 2.7 UG_L 0.28 1 0.5 Y IR88-MW63UCH 3839009.537 284162.144 12/3/2019 GW Vinyl chloride 0.084 J UG_L 0.017 0.1 0.05 Y IR88-MW63UCH 3839009.537 284162.144 4/15/2020 GW cis-1,2-Dichloroethene 6.2 UG_L 0.21 1 0.5 Y IR88-MW63UCH 3839009.537 284162.144 4/15/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW63UCH 3839009.537 284162.144 4/15/2020 GW Trichloroethene 2 UG_L 0.28 1 0.5 Y IR88-MW63UCH 3839009.537 284162.144 4/15/2020 GW Vinyl chloride 0.24 UG_L 0.017 0.1 0.05 Y IR88-MW63UCH 3839009.537 284162.144 11/4/2020 GW cis-1,2-Dichloroethene 5.2 UG_L 0.21 1 0.5 Y IR88-MW63UCH 3839009.537 284162.144 11/4/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW63UCH 3839009.537 284162.144 11/4/2020 GW Trichloroethene 1.8 UG_L 0.28 1 0.5 Y IR88-MW63UCH 3839009.537 284162.144 11/4/2020 GW Vinyl chloride 0.3 J UG_L 0.017 0.1 0.05 Y IR88-MW63UCH 3839009.537 284162.144 9/9/2021 GW cis-1,2-Dichloroethene 6 UG_L 0.21 1 0.5 Y IR88-MW63UCH 3839009.537 284162.144 9/9/2021 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW63UCH 3839009.537 284162.144 9/9/2021 GW Trichloroethene 2.1 UG_L 0.28 1 0.5 Y IR88-MW63UCH 3839009.537 284162.144 9/9/2021 GW Vinyl chloride 0.17 UG_L 0.017 0.1 0.05 Y IR88-MW63UCH 3839009.537 284162.144 2/15/2022 GW cis-1,2-Dichloroethene 12 J UG_L 0.21 1 0.5 Y IR88-MW63UCH 3839009.537 284162.144 2/15/2022 GW Tetrachloroethene 2 J UG_L 0.4 1 0.5 Y IR88-MW63UCH 3839009.537 284162.144 2/15/2022 GW Trichloroethene 2.3 J UG_L 0.28 1 0.5 Y IR88-MW63UCH 3839009.537 284162.144 2/15/2022 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW63UCH 3839009.537 284162.144 8/22/2022 GW cis-1,2-Dichloroethene 5.4 J UG_L 0.21 1 0.5 Y IR88-MW63UCH 3839009.537 284162.144 8/22/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW63UCH 3839009.537 284162.144 8/22/2022 GW Trichloroethene 0.72 J UG_L 0.28 1 0.5 Y IR88-MW63UCH 3839009.537 284162.144 8/22/2022 GW Vinyl chloride 0.093 J UG_L 0.017 0.1 0.05 Y IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW Alkalinity 309 MG_L 0.26 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW BAV1 R-Dase 0.5 U CELLS_ML 0.1 0.5 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW Benzene 0.5 U UG_L 0.2 1 0.5 N IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW Chloride 18.4 MG_L 0.25 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW cis-1,2-Dichloroethene 159 J UG_L 0.2 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW Dehalococcoides 29.5 CELLS_ML 0.1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW Ethane 0.00016 J MG_L 0.00011 0.001 0.00022 Y IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW Ethene 0.00029 U MG_L 0.00015 0.001 0.00029 N IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW Methane 0.155 MG_L 0.00435 0.02 0.0109 Y IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW Naphthalene 0.5 UJ UG_L 0.2 5 0.5 N IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW Nitrate 0.15 U MG_L 0.1 0.2 0.15 N IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW Nitrite 0.15 U MG_L 0.1 0.2 0.15 N IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW TCE R-Dase 2.3 CELLS_ML 0.1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW Tetrachloroethene 25.7 J UG_L 0.2 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW Total organic carbon (TOC) 3.29 MG_L 0.3 2 1 Y IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW Trichloroethene 129 J UG_L 0.2 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW VC R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW Vinyl chloride 0.5 U UG_L 0.2 1 0.5 N IR88-MW64UCH 3839104.043 284814.024 2/1/2019 GW Sulfide 1.5 U MG_L 1.08 2 1.5 N IR88-MW64UCH 3839104.043 284814.024 12/10/2019 GW Alkalinity 370 MG_L 0.23 5 4 Y IR88-MW64UCH 3839104.043 284814.024 12/10/2019 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW64UCH 3839104.043 284814.024 12/10/2019 GW Chloride 19 J MG_L 0.99 20 10 Y IR88-MW64UCH 3839104.043 284814.024 12/10/2019 GW cis-1,2-Dichloroethene 130 UG_L 0.21 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 12/10/2019 GW Dehalococcoides 20.7 CELLS_ML 0.05 0.3 Y IR88-MW64UCH 3839104.043 284814.024 12/10/2019 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW64UCH 3839104.043 284814.024 12/10/2019 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW64UCH 3839104.043 284814.024 12/10/2019 GW Methane 0.084 MG_L 0.0019 0.01 0.005 Y IR88-MW64UCH 3839104.043 284814.024 12/10/2019 GW TCE R-Dase 0.1 J CELLS_ML 0.05 0.3 Y IR88-MW64UCH 3839104.043 284814.024 12/10/2019 GW Tetrachloroethene 19 UG_L 0.4 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 12/10/2019 GW Total organic carbon (TOC) 1.5 MG_L 0.1 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 12/10/2019 GW Trichloroethene 76 UG_L 0.28 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 12/10/2019 GW VC R-Dase 0.6 CELLS_ML 0.05 0.3 Y IR88-MW64UCH 3839104.043 284814.024 12/10/2019 GW Vinyl chloride 0.075 J UG_L 0.017 0.1 0.05 Y IR88-MW64UCH 3839104.043 284814.024 12/10/2019 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW64UCH 3839104.043 284814.024 4/16/2020 GW Alkalinity 360 MG_L 0.23 5 4 Y IR88-MW64UCH 3839104.043 284814.024 4/16/2020 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW64UCH 3839104.043 284814.024 4/16/2020 GW Chloride 18 MG_L 0.0993 2 1 Y IR88-MW64UCH 3839104.043 284814.024 4/16/2020 GW cis-1,2-Dichloroethene 140 UG_L 0.21 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 4/16/2020 GW Dehalococcoides 11.1 CELLS_ML 0.05 0.3 Y IR88-MW64UCH 3839104.043 284814.024 4/16/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW64UCH 3839104.043 284814.024 4/16/2020 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW64UCH 3839104.043 284814.024 4/16/2020 GW Methane 0.095 MG_L 0.0019 0.01 0.005 Y IR88-MW64UCH 3839104.043 284814.024 4/16/2020 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW64UCH 3839104.043 284814.024 4/16/2020 GW Tetrachloroethene 5.8 UG_L 0.4 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 4/16/2020 GW Total organic carbon (TOC) 1.1 MG_L 0.1 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 4/16/2020 GW Trichloroethene 29 UG_L 0.28 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 4/16/2020 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW64UCH 3839104.043 284814.024 4/16/2020 GW Vinyl chloride 0.12 J UG_L 0.017 0.1 0.05 Y IR88-MW64UCH 3839104.043 284814.024 4/16/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW64UCH 3839104.043 284814.024 10/30/2020 GW Alkalinity 350 MG_L 0.23 5 4 Y IR88-MW64UCH 3839104.043 284814.024 10/30/2020 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW64UCH 3839104.043 284814.024 10/30/2020 GW Chloride 18 MG_L 0.0993 2 1 Y IR88-MW64UCH 3839104.043 284814.024 10/30/2020 GW cis-1,2-Dichloroethene 110 UG_L 0.21 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 10/30/2020 GW Dehalococcoides 10.7 CELLS_ML 0.05 0.3 Y IR88-MW64UCH 3839104.043 284814.024 10/30/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW64UCH 3839104.043 284814.024 10/30/2020 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW64UCH 3839104.043 284814.024 10/30/2020 GW Methane 0.074 MG_L 0.0019 0.01 0.005 Y IR88-MW64UCH 3839104.043 284814.024 10/30/2020 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW64UCH 3839104.043 284814.024 10/30/2020 GW Tetrachloroethene 2.5 UG_L 0.4 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 10/30/2020 GW Total organic carbon (TOC) 1 MG_L 0.1 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 10/30/2020 GW Trichloroethene 14 UG_L 0.28 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 10/30/2020 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW64UCH 3839104.043 284814.024 10/30/2020 GW Vinyl chloride 0.063 J UG_L 0.017 0.1 0.05 Y IR88-MW64UCH 3839104.043 284814.024 10/30/2020 GW Sulfide 0.73 J MG_L 0.69 1 0.8 Y IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW Alkalinity 360 MG_L 0.23 5 4 Y IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW Chloride 17 MG_L 0.099 2 1 Y IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW cis-1,2-Dichloroethene 62 UG_L 0.21 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW Dehalococcoides 30.4 CELLS_ML 0.05 0.3 Y IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW Methane 0.045 MG_L 0.0019 0.01 0.005 Y IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW Nitrate 0.025 U MG_L 0.015 0.05 0.025 N IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW Nitrite 0.025 U MG_L 0.0032 0.05 0.025 N IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW TCE R-Dase 1.5 CELLS_ML 0.05 0.3 Y IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW Total organic carbon (TOC) 1 MG_L 0.1 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW Trichloroethene 5.9 UG_L 0.28 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW VC R-Dase 1.4 CELLS_ML 0.05 0.3 Y IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW Vinyl chloride 1.2 UG_L 0.017 0.1 0.05 Y IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW cis-1,2-Dichloroethene 60 UG_L 0.21 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW Tetrachloroethene 0.42 J UG_L 0.4 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW Trichloroethene 5.9 UG_L 0.28 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW Vinyl chloride 1.2 UG_L 0.017 0.1 0.05 Y IR88-MW64UCH 3839104.043 284814.024 9/22/2021 GW Sulfide 0.98 J MG_L 0.69 1 0.8 Y IR88-MW64UCH 3839104.043 284814.024 3/2/2022 GW Alkalinity 350 MG_L 0.23 5 4 Y IR88-MW64UCH 3839104.043 284814.024 3/2/2022 GW BAV1 R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW64UCH 3839104.043 284814.024 3/2/2022 GW Chloride 18 MG_L 0.099 2 1 Y IR88-MW64UCH 3839104.043 284814.024 3/2/2022 GW cis-1,2-Dichloroethene 45 UG_L 0.21 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 3/2/2022 GW Dehalococcoides 29.7 CELLS_ML 0.1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 3/2/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW64UCH 3839104.043 284814.024 3/2/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW64UCH 3839104.043 284814.024 3/2/2022 GW Methane 0.053 MG_L 0.0019 0.01 0.005 Y IR88-MW64UCH 3839104.043 284814.024 3/2/2022 GW Nitrate 0.038 J MG_L 0.017 0.05 0.025 Y IR88-MW64UCH 3839104.043 284814.024 3/2/2022 GW Nitrite 0.34 MG_L 0.0092 0.05 0.025 Y IR88-MW64UCH 3839104.043 284814.024 3/2/2022 GW TCE R-Dase 2.6 CELLS_ML 0.1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 3/2/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW64UCH 3839104.043 284814.024 3/2/2022 GW Total organic carbon (TOC) 1.4 MG_L 0.1 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 3/2/2022 GW Trichloroethene 4.4 UG_L 0.28 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 3/2/2022 GW VC R-Dase 2 CELLS_ML 0.1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 3/2/2022 GW Vinyl chloride 0.074 J UG_L 0.017 0.1 0.05 Y IR88-MW64UCH 3839104.043 284814.024 3/2/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW64UCH 3839104.043 284814.024 8/22/2022 GW Alkalinity 320 MG_L 0.23 5 4 Y IR88-MW64UCH 3839104.043 284814.024 8/22/2022 GW Chloride 18 MG_L 0.099 2 1 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW64UCH 3839104.043 284814.024 8/22/2022 GW cis-1,2-Dichloroethene 42 UG_L 0.21 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 8/22/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW64UCH 3839104.043 284814.024 8/22/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW64UCH 3839104.043 284814.024 8/22/2022 GW Methane 0.054 MG_L 0.0019 0.01 0.005 Y IR88-MW64UCH 3839104.043 284814.024 8/22/2022 GW Nitrate 0.07 MG_L 0.017 0.05 0.025 Y IR88-MW64UCH 3839104.043 284814.024 8/22/2022 GW Nitrite 0.44 MG_L 0.0092 0.05 0.025 Y IR88-MW64UCH 3839104.043 284814.024 8/22/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW64UCH 3839104.043 284814.024 8/22/2022 GW Total organic carbon (TOC) 1 MG_L 0.37 1 0.75 Y IR88-MW64UCH 3839104.043 284814.024 8/22/2022 GW Trichloroethene 3.6 UG_L 0.28 1 0.5 Y IR88-MW64UCH 3839104.043 284814.024 8/22/2022 GW Vinyl chloride 0.087 J UG_L 0.017 0.1 0.05 Y IR88-MW64UCH 3839104.043 284814.024 8/22/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW65UCH 3839105.723 284808.097 1/29/2019 GW Benzene 0.5 U UG_L 0.2 1 0.5 N IR88-MW65UCH 3839105.723 284808.097 1/29/2019 GW cis-1,2-Dichloroethene 17.4 J UG_L 0.2 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 1/29/2019 GW Naphthalene 0.5 U UG_L 0.2 5 0.5 N IR88-MW65UCH 3839105.723 284808.097 1/29/2019 GW Tetrachloroethene 0.5 U UG_L 0.2 1 0.5 N IR88-MW65UCH 3839105.723 284808.097 1/29/2019 GW Trichloroethene 15.1 J UG_L 0.2 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 1/29/2019 GW Vinyl chloride 0.5 U UG_L 0.2 1 0.5 N IR88-MW65UCH 3839105.723 284808.097 12/10/2019 GW Alkalinity 180 MG_L 0.23 5 4 Y IR88-MW65UCH 3839105.723 284808.097 12/10/2019 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW65UCH 3839105.723 284808.097 12/10/2019 GW Chloride 20 J MG_L 0.99 20 10 Y IR88-MW65UCH 3839105.723 284808.097 12/10/2019 GW cis-1,2-Dichloroethene 24 UG_L 0.21 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 12/10/2019 GW Dehalococcoides 13.5 CELLS_ML 0.05 0.3 Y IR88-MW65UCH 3839105.723 284808.097 12/10/2019 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW65UCH 3839105.723 284808.097 12/10/2019 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW65UCH 3839105.723 284808.097 12/10/2019 GW Methane 0.38 MG_L 0.0019 0.01 0.005 Y IR88-MW65UCH 3839105.723 284808.097 12/10/2019 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW65UCH 3839105.723 284808.097 12/10/2019 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW65UCH 3839105.723 284808.097 12/10/2019 GW Total organic carbon (TOC) 1.6 MG_L 0.1 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 12/10/2019 GW Trichloroethene 5 UG_L 0.28 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 12/10/2019 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW65UCH 3839105.723 284808.097 12/10/2019 GW Vinyl chloride 0.06 J UG_L 0.017 0.1 0.05 Y IR88-MW65UCH 3839105.723 284808.097 12/10/2019 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW65UCH 3839105.723 284808.097 4/15/2020 GW Alkalinity 200 MG_L 0.23 5 4 Y IR88-MW65UCH 3839105.723 284808.097 4/15/2020 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW65UCH 3839105.723 284808.097 4/15/2020 GW Chloride 19 MG_L 0.0993 2 1 Y IR88-MW65UCH 3839105.723 284808.097 4/15/2020 GW cis-1,2-Dichloroethene 20 UG_L 0.21 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 4/15/2020 GW Dehalococcoides 5.7 CELLS_ML 0.05 0.3 Y IR88-MW65UCH 3839105.723 284808.097 4/15/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW65UCH 3839105.723 284808.097 4/15/2020 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW65UCH 3839105.723 284808.097 4/15/2020 GW Methane 0.31 MG_L 0.0019 0.01 0.005 Y IR88-MW65UCH 3839105.723 284808.097 4/15/2020 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW65UCH 3839105.723 284808.097 4/15/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW65UCH 3839105.723 284808.097 4/15/2020 GW Total organic carbon (TOC) 0.99 J MG_L 0.1 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 4/15/2020 GW Trichloroethene 4.1 UG_L 0.28 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 4/15/2020 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW65UCH 3839105.723 284808.097 4/15/2020 GW Vinyl chloride 0.052 J UG_L 0.017 0.1 0.05 Y IR88-MW65UCH 3839105.723 284808.097 4/15/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW65UCH 3839105.723 284808.097 10/30/2020 GW Alkalinity 150 MG_L 0.23 5 4 Y IR88-MW65UCH 3839105.723 284808.097 10/30/2020 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW65UCH 3839105.723 284808.097 10/30/2020 GW Chloride 19 MG_L 0.0993 2 1 Y IR88-MW65UCH 3839105.723 284808.097 10/30/2020 GW cis-1,2-Dichloroethene 11 UG_L 0.21 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 10/30/2020 GW Dehalococcoides 10.7 CELLS_ML 0.05 0.3 Y IR88-MW65UCH 3839105.723 284808.097 10/30/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW65UCH 3839105.723 284808.097 10/30/2020 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW65UCH 3839105.723 284808.097 10/30/2020 GW Methane 0.48 MG_L 0.0019 0.01 0.005 Y IR88-MW65UCH 3839105.723 284808.097 10/30/2020 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW65UCH 3839105.723 284808.097 10/30/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW65UCH 3839105.723 284808.097 10/30/2020 GW Total organic carbon (TOC) 0.97 J MG_L 0.1 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 10/30/2020 GW Trichloroethene 1.8 UG_L 0.28 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 10/30/2020 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW65UCH 3839105.723 284808.097 10/30/2020 GW Vinyl chloride 0.097 J UG_L 0.017 0.1 0.05 Y IR88-MW65UCH 3839105.723 284808.097 10/30/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW65UCH 3839105.723 284808.097 9/21/2021 GW Alkalinity 180 MG_L 0.23 5 4 Y IR88-MW65UCH 3839105.723 284808.097 9/21/2021 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW65UCH 3839105.723 284808.097 9/21/2021 GW Chloride 16 MG_L 0.099 2 1 Y IR88-MW65UCH 3839105.723 284808.097 9/21/2021 GW cis-1,2-Dichloroethene 6.8 UG_L 0.21 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 9/21/2021 GW Dehalococcoides 8.3 CELLS_ML 0.05 0.3 Y IR88-MW65UCH 3839105.723 284808.097 9/21/2021 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW65UCH 3839105.723 284808.097 9/21/2021 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW65UCH 3839105.723 284808.097 9/21/2021 GW Methane 0.77 MG_L 0.0019 0.01 0.005 Y IR88-MW65UCH 3839105.723 284808.097 9/21/2021 GW Nitrate 0.025 U MG_L 0.015 0.05 0.025 N IR88-MW65UCH 3839105.723 284808.097 9/21/2021 GW Nitrite 0.025 U MG_L 0.0032 0.05 0.025 N IR88-MW65UCH 3839105.723 284808.097 9/21/2021 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW65UCH 3839105.723 284808.097 9/21/2021 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW65UCH 3839105.723 284808.097 9/21/2021 GW Total organic carbon (TOC) 0.92 J MG_L 0.1 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 9/21/2021 GW Trichloroethene 2.5 UG_L 0.28 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 9/21/2021 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW65UCH 3839105.723 284808.097 9/21/2021 GW Vinyl chloride 0.19 UG_L 0.017 0.1 0.05 Y IR88-MW65UCH 3839105.723 284808.097 9/21/2021 GW Sulfide 0.83 J MG_L 0.69 1 0.8 Y IR88-MW65UCH 3839105.723 284808.097 2/25/2022 GW Alkalinity 210 MG_L 0.23 5 4 Y IR88-MW65UCH 3839105.723 284808.097 2/25/2022 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW65UCH 3839105.723 284808.097 2/25/2022 GW Chloride 16 MG_L 0.099 2 1 Y IR88-MW65UCH 3839105.723 284808.097 2/25/2022 GW cis-1,2-Dichloroethene 4.8 UG_L 0.21 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 2/25/2022 GW Dehalococcoides 5.2 CELLS_ML 0.05 0.3 Y IR88-MW65UCH 3839105.723 284808.097 2/25/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW65UCH 3839105.723 284808.097 2/25/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW65UCH 3839105.723 284808.097 2/25/2022 GW Methane 0.86 MG_L 0.0019 0.01 0.005 Y IR88-MW65UCH 3839105.723 284808.097 2/25/2022 GW Nitrate 0.037 J MG_L 0.017 0.05 0.025 Y IR88-MW65UCH 3839105.723 284808.097 2/25/2022 GW Nitrite 0.29 MG_L 0.0092 0.05 0.025 Y IR88-MW65UCH 3839105.723 284808.097 2/25/2022 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW65UCH 3839105.723 284808.097 2/25/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW65UCH 3839105.723 284808.097 2/25/2022 GW Total organic carbon (TOC) 0.84 J MG_L 0.1 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 2/25/2022 GW Trichloroethene 1.4 UG_L 0.28 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 2/25/2022 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW65UCH 3839105.723 284808.097 2/25/2022 GW Vinyl chloride 0.095 J UG_L 0.017 0.1 0.05 Y IR88-MW65UCH 3839105.723 284808.097 2/25/2022 GW Sulfide 0.98 J MG_L 0.69 1 0.8 Y IR88-MW65UCH 3839105.723 284808.097 8/22/2022 GW Alkalinity 180 MG_L 0.23 5 4 Y IR88-MW65UCH 3839105.723 284808.097 8/22/2022 GW Chloride 17 MG_L 0.099 2 1 Y IR88-MW65UCH 3839105.723 284808.097 8/22/2022 GW cis-1,2-Dichloroethene 6.7 J UG_L 0.21 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 8/22/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW65UCH 3839105.723 284808.097 8/22/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW65UCH 3839105.723 284808.097 8/22/2022 GW Methane 0.4 MG_L 0.0019 0.01 0.005 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW65UCH 3839105.723 284808.097 8/22/2022 GW Nitrate 0.037 J MG_L 0.017 0.05 0.025 Y IR88-MW65UCH 3839105.723 284808.097 8/22/2022 GW Nitrite 0.27 MG_L 0.0092 0.05 0.025 Y IR88-MW65UCH 3839105.723 284808.097 8/22/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW65UCH 3839105.723 284808.097 8/22/2022 GW Total organic carbon (TOC) 0.97 J MG_L 0.37 1 0.75 Y IR88-MW65UCH 3839105.723 284808.097 8/22/2022 GW Trichloroethene 1.2 J UG_L 0.28 1 0.5 Y IR88-MW65UCH 3839105.723 284808.097 8/22/2022 GW Vinyl chloride 0.053 J UG_L 0.017 0.1 0.05 Y IR88-MW65UCH 3839105.723 284808.097 8/22/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW Alkalinity 331 MG_L 0.26 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW BAV1 R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW Benzene 0.5 U UG_L 0.2 1 0.5 N IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW Chloride 21.8 MG_L 0.25 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW cis-1,2-Dichloroethene 63.9 J UG_L 0.2 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW Dehalococcoides 20.2 CELLS_ML 0.1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW Ethane 0.00022 U MG_L 0.00011 0.001 0.00022 N IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW Ethene 0.000844 J MG_L 0.00015 0.001 0.00029 Y IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW Methane 0.285 MG_L 0.00435 0.02 0.0109 Y IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW Naphthalene 0.5 U UG_L 0.2 5 0.5 N IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW Nitrate 0.15 U MG_L 0.1 0.2 0.15 N IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW Nitrite 0.15 U MG_L 0.1 0.2 0.15 N IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW TCE R-Dase 2.2 CELLS_ML 0.1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW Tetrachloroethene 77.6 J UG_L 0.2 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW Total organic carbon (TOC) 1.09 J MG_L 0.3 2 1 Y IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW Trichloroethene 162 J UG_L 0.2 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW VC R-Dase 2.2 CELLS_ML 0.1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW Vinyl chloride 9.7 J UG_L 0.2 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 2/1/2019 GW Sulfide 1.5 U MG_L 1.08 2 1.5 N IR88-MW66UCH 3839108.382 284802.515 12/10/2019 GW Alkalinity 360 MG_L 0.23 5 4 Y IR88-MW66UCH 3839108.382 284802.515 12/10/2019 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW66UCH 3839108.382 284802.515 12/10/2019 GW Chloride 21 MG_L 0.99 20 10 Y IR88-MW66UCH 3839108.382 284802.515 12/10/2019 GW cis-1,2-Dichloroethene 120 UG_L 0.21 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 12/10/2019 GW Dehalococcoides 50.2 CELLS_ML 0.05 0.3 Y IR88-MW66UCH 3839108.382 284802.515 12/10/2019 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW66UCH 3839108.382 284802.515 12/10/2019 GW Ethene 0.0039 J MG_L 0.002 0.01 0.005 Y IR88-MW66UCH 3839108.382 284802.515 12/10/2019 GW Methane 3.2 MG_L 0.048 0.25 0.12 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW66UCH 3839108.382 284802.515 12/10/2019 GW TCE R-Dase 0.7 CELLS_ML 0.05 0.3 Y IR88-MW66UCH 3839108.382 284802.515 12/10/2019 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW66UCH 3839108.382 284802.515 12/10/2019 GW Total organic carbon (TOC) 2.9 MG_L 0.1 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 12/10/2019 GW Trichloroethene 42 UG_L 0.28 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 12/10/2019 GW VC R-Dase 2.2 CELLS_ML 0.05 0.3 Y IR88-MW66UCH 3839108.382 284802.515 12/10/2019 GW Vinyl chloride 39 UG_L 1.7 10 5 Y IR88-MW66UCH 3839108.382 284802.515 12/10/2019 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW66UCH 3839108.382 284802.515 4/15/2020 GW Alkalinity 400 MG_L 0.23 5 4 Y IR88-MW66UCH 3839108.382 284802.515 4/15/2020 GW BAV1 R-Dase 0.4 U CELLS_ML 0.08 0.4 N IR88-MW66UCH 3839108.382 284802.515 4/15/2020 GW Chloride 19 MG_L 0.0993 2 1 Y IR88-MW66UCH 3839108.382 284802.515 4/15/2020 GW cis-1,2-Dichloroethene 15 UG_L 0.21 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 4/15/2020 GW Dehalococcoides 6490 CELLS_ML 0.08 0.4 Y IR88-MW66UCH 3839108.382 284802.515 4/15/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW66UCH 3839108.382 284802.515 4/15/2020 GW Ethene 0.024 MG_L 0.002 0.01 0.005 Y IR88-MW66UCH 3839108.382 284802.515 4/15/2020 GW Methane 17 MG_L 0.048 0.25 0.12 Y IR88-MW66UCH 3839108.382 284802.515 4/15/2020 GW TCE R-Dase 506 CELLS_ML 0.08 0.4 Y IR88-MW66UCH 3839108.382 284802.515 4/15/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW66UCH 3839108.382 284802.515 4/15/2020 GW Total organic carbon (TOC) 24 MG_L 0.1 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 4/15/2020 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW66UCH 3839108.382 284802.515 4/15/2020 GW VC R-Dase 536 CELLS_ML 0.08 0.4 Y IR88-MW66UCH 3839108.382 284802.515 4/15/2020 GW Vinyl chloride 63 UG_L 0.25 2 1 Y IR88-MW66UCH 3839108.382 284802.515 4/15/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW Alkalinity 390 MG_L 0.23 5 4 Y IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW BAV1 R-Dase 0.4 U CELLS_ML 0.077 0.4 N IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW Chloride 12 MG_L 0.0993 2 1 Y IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW cis-1,2-Dichloroethene 14 J UG_L 0.21 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW Dehalococcoides 2460 CELLS_ML 0.077 0.4 Y IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW Ethene 0.014 MG_L 0.002 0.01 0.005 Y IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW Methane 12 MG_L 0.048 0.25 0.12 Y IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW TCE R-Dase 414 CELLS_ML 0.077 0.4 Y IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW Total organic carbon (TOC) 2.3 MG_L 0.1 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW Trichloroethene 1 J UG_L 0.28 1 0.5 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW VC R-Dase 163 CELLS_ML 0.077 0.4 Y IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW Vinyl chloride 88 J UG_L 0.25 2 1 Y IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW cis-1,2-Dichloroethene 12 UG_L 0.21 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW Trichloroethene 1 UG_L 0.28 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW Vinyl chloride 69 UG_L 0.25 2 1 Y IR88-MW66UCH 3839108.382 284802.515 11/4/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW Alkalinity 480 MG_L 0.23 5 4 Y IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW BAV1 R-Dase 0.3 U CELLS_ML 0.067 0.3 N IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW Chloride 19 MG_L 0.099 2 1 Y IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW cis-1,2-Dichloroethene 3.2 UG_L 0.21 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW Dehalococcoides 3840 CELLS_ML 0.067 0.3 Y IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW Ethene 0.012 MG_L 0.002 0.01 0.005 Y IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW Methane 12 L MG_L 0.039 0.2 0.1 Y IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW Nitrate 0.041 J MG_L 0.017 0.05 0.025 Y IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW Nitrite 0.33 MG_L 0.0092 0.05 0.025 Y IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW TCE R-Dase 136 CELLS_ML 0.067 0.3 Y IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW Total organic carbon (TOC) 17 MG_L 0.1 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW VC R-Dase 393 CELLS_ML 0.067 0.3 Y IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW Vinyl chloride 33 UG_L 0.25 2 1 Y IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW cis-1,2-Dichloroethene 3.2 UG_L 0.21 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW Vinyl chloride 34 UG_L 0.25 2 1 Y IR88-MW66UCH 3839108.382 284802.515 9/16/2021 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW66UCH 3839108.382 284802.515 2/25/2022 GW Alkalinity 500 MG_L 0.23 5 4 Y IR88-MW66UCH 3839108.382 284802.515 2/25/2022 GW BAV1 R-Dase 0.4 U CELLS_ML 0.087 0.4 N IR88-MW66UCH 3839108.382 284802.515 2/25/2022 GW Chloride 18 MG_L 0.099 2 1 Y IR88-MW66UCH 3839108.382 284802.515 2/25/2022 GW cis-1,2-Dichloroethene 0.65 J UG_L 0.21 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 2/25/2022 GW Dehalococcoides 424 CELLS_ML 0.087 0.4 Y IR88-MW66UCH 3839108.382 284802.515 2/25/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW66UCH 3839108.382 284802.515 2/25/2022 GW Ethene 0.011 MG_L 0.002 0.01 0.005 Y IR88-MW66UCH 3839108.382 284802.515 2/25/2022 GW Methane 13 MG_L 0.048 0.25 0.12 Y IR88-MW66UCH 3839108.382 284802.515 2/25/2022 GW Nitrate 0.041 J MG_L 0.017 0.05 0.025 Y IR88-MW66UCH 3839108.382 284802.515 2/25/2022 GW Nitrite 0.6 MG_L 0.0092 0.05 0.025 Y IR88-MW66UCH 3839108.382 284802.515 2/25/2022 GW TCE R-Dase 57.5 CELLS_ML 0.087 0.4 Y IR88-MW66UCH 3839108.382 284802.515 2/25/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW66UCH 3839108.382 284802.515 2/25/2022 GW Total organic carbon (TOC) 23 MG_L 0.1 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 2/25/2022 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW66UCH 3839108.382 284802.515 2/25/2022 GW VC R-Dase 34.3 CELLS_ML 0.087 0.4 Y IR88-MW66UCH 3839108.382 284802.515 2/25/2022 GW Vinyl chloride 22 UG_L 0.25 2 1 Y IR88-MW66UCH 3839108.382 284802.515 2/25/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW66UCH 3839108.382 284802.515 8/24/2022 GW Alkalinity 520 MG_L 0.23 5 4 Y IR88-MW66UCH 3839108.382 284802.515 8/24/2022 GW Chloride 18 MG_L 0.099 2 1 Y IR88-MW66UCH 3839108.382 284802.515 8/24/2022 GW cis-1,2-Dichloroethene 1.4 UG_L 0.21 1 0.5 Y IR88-MW66UCH 3839108.382 284802.515 8/24/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW66UCH 3839108.382 284802.515 8/24/2022 GW Ethene 0.0092 J MG_L 0.002 0.01 0.005 Y IR88-MW66UCH 3839108.382 284802.515 8/24/2022 GW Methane 17 MG_L 0.097 0.5 0.25 Y IR88-MW66UCH 3839108.382 284802.515 8/24/2022 GW Nitrate 0.037 J MG_L 0.017 0.05 0.025 Y IR88-MW66UCH 3839108.382 284802.515 8/24/2022 GW Nitrite 0.46 MG_L 0.0092 0.05 0.025 Y IR88-MW66UCH 3839108.382 284802.515 8/24/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW66UCH 3839108.382 284802.515 8/24/2022 GW Total organic carbon (TOC) 41 MG_L 0.37 1 0.75 Y IR88-MW66UCH 3839108.382 284802.515 8/24/2022 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW66UCH 3839108.382 284802.515 8/24/2022 GW Vinyl chloride 15 UG_L 0.34 2 1 Y IR88-MW66UCH 3839108.382 284802.515 8/24/2022 GW Sulfide 1.8 MG_L 0.69 1 0.8 Y IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW Alkalinity 281 MG_L 0.26 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW BAV1 R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW Benzene 0.5 U UG_L 0.2 1 0.5 N IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW Chloride 17 MG_L 0.25 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW cis-1,2-Dichloroethene 0.5 U UG_L 0.2 1 0.5 N IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW Dehalococcoides 3.9 CELLS_ML 0.1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW Ethane 0.00022 U MG_L 0.00011 0.001 0.00022 N IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW Ethene 0.00029 U MG_L 0.00015 0.001 0.00029 N IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW Methane 1.25 MG_L 0.0435 0.2 0.109 Y IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW Naphthalene 0.5 UJ UG_L 0.2 5 0.5 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW Nitrate 0.15 U MG_L 0.1 0.2 0.15 N IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW Nitrite 0.15 U MG_L 0.1 0.2 0.15 N IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW TCE R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW Tetrachloroethene 0.5 U UG_L 0.2 1 0.5 N IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW Total organic carbon (TOC) 6.68 MG_L 0.3 2 1 Y IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW Trichloroethene 7.36 J UG_L 0.2 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW VC R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW Vinyl chloride 0.5 U UG_L 0.2 1 0.5 N IR88-MW67UCH 3839110.313 284796.548 2/1/2019 GW Sulfide 1.5 U MG_L 1.08 2 1.5 N IR88-MW67UCH 3839110.313 284796.548 12/10/2019 GW Alkalinity 220 MG_L 0.23 5 4 Y IR88-MW67UCH 3839110.313 284796.548 12/10/2019 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW67UCH 3839110.313 284796.548 12/10/2019 GW Chloride 16 J MG_L 0.99 20 10 Y IR88-MW67UCH 3839110.313 284796.548 12/10/2019 GW cis-1,2-Dichloroethene 7.3 UG_L 0.21 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 12/10/2019 GW Dehalococcoides 11.1 CELLS_ML 0.05 0.3 Y IR88-MW67UCH 3839110.313 284796.548 12/10/2019 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW67UCH 3839110.313 284796.548 12/10/2019 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW67UCH 3839110.313 284796.548 12/10/2019 GW Methane 2 MG_L 0.0097 0.05 0.025 Y IR88-MW67UCH 3839110.313 284796.548 12/10/2019 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW67UCH 3839110.313 284796.548 12/10/2019 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW67UCH 3839110.313 284796.548 12/10/2019 GW Total organic carbon (TOC) 1.4 MG_L 0.1 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 12/10/2019 GW Trichloroethene 5.8 UG_L 0.28 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 12/10/2019 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW67UCH 3839110.313 284796.548 12/10/2019 GW Vinyl chloride 0.07 J UG_L 0.017 0.1 0.05 Y IR88-MW67UCH 3839110.313 284796.548 12/10/2019 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW67UCH 3839110.313 284796.548 4/15/2020 GW Alkalinity 210 MG_L 0.23 5 4 Y IR88-MW67UCH 3839110.313 284796.548 4/15/2020 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW67UCH 3839110.313 284796.548 4/15/2020 GW Chloride 16 MG_L 0.0993 2 1 Y IR88-MW67UCH 3839110.313 284796.548 4/15/2020 GW cis-1,2-Dichloroethene 7.6 UG_L 0.21 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 4/15/2020 GW Dehalococcoides 18.5 CELLS_ML 0.05 0.3 Y IR88-MW67UCH 3839110.313 284796.548 4/15/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW67UCH 3839110.313 284796.548 4/15/2020 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW67UCH 3839110.313 284796.548 4/15/2020 GW Methane 2.2 MG_L 0.0097 0.05 0.025 Y IR88-MW67UCH 3839110.313 284796.548 4/15/2020 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW67UCH 3839110.313 284796.548 4/15/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW67UCH 3839110.313 284796.548 4/15/2020 GW Total organic carbon (TOC) 0.95 J MG_L 0.1 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 4/15/2020 GW Trichloroethene 6.3 UG_L 0.28 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 4/15/2020 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW67UCH 3839110.313 284796.548 4/15/2020 GW Vinyl chloride 0.062 J UG_L 0.017 0.1 0.05 Y IR88-MW67UCH 3839110.313 284796.548 4/15/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW67UCH 3839110.313 284796.548 10/30/2020 GW Alkalinity 210 MG_L 0.23 5 4 Y IR88-MW67UCH 3839110.313 284796.548 10/30/2020 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW67UCH 3839110.313 284796.548 10/30/2020 GW Chloride 15 MG_L 0.0993 2 1 Y IR88-MW67UCH 3839110.313 284796.548 10/30/2020 GW cis-1,2-Dichloroethene 8.4 UG_L 0.21 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 10/30/2020 GW Dehalococcoides 16.7 CELLS_ML 0.05 0.3 Y IR88-MW67UCH 3839110.313 284796.548 10/30/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW67UCH 3839110.313 284796.548 10/30/2020 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW67UCH 3839110.313 284796.548 10/30/2020 GW Methane 2.2 MG_L 0.0097 0.05 0.025 Y IR88-MW67UCH 3839110.313 284796.548 10/30/2020 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW67UCH 3839110.313 284796.548 10/30/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW67UCH 3839110.313 284796.548 10/30/2020 GW Total organic carbon (TOC) 0.92 J MG_L 0.1 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 10/30/2020 GW Trichloroethene 4.1 UG_L 0.28 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 10/30/2020 GW VC R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW67UCH 3839110.313 284796.548 10/30/2020 GW Vinyl chloride 0.056 J UG_L 0.017 0.1 0.05 Y IR88-MW67UCH 3839110.313 284796.548 10/30/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW67UCH 3839110.313 284796.548 9/7/2021 GW Alkalinity 220 MG_L 0.23 5 4 Y IR88-MW67UCH 3839110.313 284796.548 9/7/2021 GW BAV1 R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW67UCH 3839110.313 284796.548 9/7/2021 GW Chloride 14 MG_L 0.099 2 1 Y IR88-MW67UCH 3839110.313 284796.548 9/7/2021 GW cis-1,2-Dichloroethene 5.7 UG_L 0.21 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 9/7/2021 GW Dehalococcoides 18.4 CELLS_ML 0.05 0.3 Y IR88-MW67UCH 3839110.313 284796.548 9/7/2021 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW67UCH 3839110.313 284796.548 9/7/2021 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW67UCH 3839110.313 284796.548 9/7/2021 GW Methane 1.6 MG_L 0.0097 0.05 0.025 Y IR88-MW67UCH 3839110.313 284796.548 9/7/2021 GW Nitrate 0.025 U MG_L 0.015 0.05 0.025 N IR88-MW67UCH 3839110.313 284796.548 9/7/2021 GW Nitrite 0.025 U MG_L 0.0032 0.05 0.025 N IR88-MW67UCH 3839110.313 284796.548 9/7/2021 GW TCE R-Dase 0.3 U CELLS_ML 0.05 0.3 N IR88-MW67UCH 3839110.313 284796.548 9/7/2021 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW67UCH 3839110.313 284796.548 9/7/2021 GW Total organic carbon (TOC) 11 MG_L 0.1 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 9/7/2021 GW Trichloroethene 4.3 UG_L 0.28 1 0.5 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW67UCH 3839110.313 284796.548 9/7/2021 GW VC R-Dase 0.07 J CELLS_ML 0.05 0.3 Y IR88-MW67UCH 3839110.313 284796.548 9/7/2021 GW Vinyl chloride 0.05 U UG_L 0.017 0.1 0.05 N IR88-MW67UCH 3839110.313 284796.548 9/7/2021 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW67UCH 3839110.313 284796.548 2/24/2022 GW Alkalinity 250 MG_L 0.23 5 4 Y IR88-MW67UCH 3839110.313 284796.548 2/24/2022 GW BAV1 R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW67UCH 3839110.313 284796.548 2/24/2022 GW Chloride 14 MG_L 0.099 2 1 Y IR88-MW67UCH 3839110.313 284796.548 2/24/2022 GW cis-1,2-Dichloroethene 4.5 UG_L 0.21 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 2/24/2022 GW Dehalococcoides 6.1 CELLS_ML 0.1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 2/24/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW67UCH 3839110.313 284796.548 2/24/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW67UCH 3839110.313 284796.548 2/24/2022 GW Methane 4.3 MG_L 0.039 0.2 0.1 Y IR88-MW67UCH 3839110.313 284796.548 2/24/2022 GW Nitrate 0.038 J MG_L 0.017 0.05 0.025 Y IR88-MW67UCH 3839110.313 284796.548 2/24/2022 GW Nitrite 0.28 MG_L 0.0092 0.05 0.025 Y IR88-MW67UCH 3839110.313 284796.548 2/24/2022 GW TCE R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW67UCH 3839110.313 284796.548 2/24/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW67UCH 3839110.313 284796.548 2/24/2022 GW Total organic carbon (TOC) 0.73 J MG_L 0.1 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 2/24/2022 GW Trichloroethene 3.3 UG_L 0.28 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 2/24/2022 GW VC R-Dase 0.5 U CELLS_ML 0.1 0.5 N IR88-MW67UCH 3839110.313 284796.548 2/24/2022 GW Vinyl chloride 0.032 J UG_L 0.017 0.1 0.05 Y IR88-MW67UCH 3839110.313 284796.548 2/24/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW67UCH 3839110.313 284796.548 8/18/2022 GW Alkalinity 230 MG_L 0.23 5 4 Y IR88-MW67UCH 3839110.313 284796.548 8/18/2022 GW Chloride 14 MG_L 0.099 2 1 Y IR88-MW67UCH 3839110.313 284796.548 8/18/2022 GW cis-1,2-Dichloroethene 5.4 J UG_L 0.21 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 8/18/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW67UCH 3839110.313 284796.548 8/18/2022 GW Ethene 0.005 U MG_L 0.002 0.01 0.005 N IR88-MW67UCH 3839110.313 284796.548 8/18/2022 GW Methane 2.2 MG_L 0.019 0.1 0.05 Y IR88-MW67UCH 3839110.313 284796.548 8/18/2022 GW Nitrate 0.038 J MG_L 0.017 0.05 0.025 Y IR88-MW67UCH 3839110.313 284796.548 8/18/2022 GW Nitrite 0.39 MG_L 0.0092 0.05 0.025 Y IR88-MW67UCH 3839110.313 284796.548 8/18/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW67UCH 3839110.313 284796.548 8/18/2022 GW Total organic carbon (TOC) 0.87 J MG_L 0.37 1 0.75 Y IR88-MW67UCH 3839110.313 284796.548 8/18/2022 GW Trichloroethene 2.1 J UG_L 0.28 1 0.5 Y IR88-MW67UCH 3839110.313 284796.548 8/18/2022 GW Vinyl chloride 0.032 J UG_L 0.017 0.1 0.05 Y IR88-MW67UCH 3839110.313 284796.548 8/18/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW68UCH 3839112.259 284790.719 1/30/2019 GW Benzene 1 U UG_L 0.4 2 1 N Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW68UCH 3839112.259 284790.719 1/30/2019 GW cis-1,2-Dichloroethene 42.4 J UG_L 0.4 2 1 Y IR88-MW68UCH 3839112.259 284790.719 1/30/2019 GW Naphthalene 1 U UG_L 0.4 10 1 N IR88-MW68UCH 3839112.259 284790.719 1/30/2019 GW Tetrachloroethene 257 J UG_L 0.4 2 1 Y IR88-MW68UCH 3839112.259 284790.719 1/30/2019 GW Trichloroethene 48.6 J UG_L 0.4 2 1 Y IR88-MW68UCH 3839112.259 284790.719 1/30/2019 GW Vinyl chloride 1 U UG_L 0.4 2 1 N IR88-MW68UCH 3839112.259 284790.719 12/3/2019 GW cis-1,2-Dichloroethene 63 UG_L 0.21 1 0.5 Y IR88-MW68UCH 3839112.259 284790.719 12/3/2019 GW Tetrachloroethene 210 UG_L 0.8 2 1 Y IR88-MW68UCH 3839112.259 284790.719 12/3/2019 GW Trichloroethene 77 UG_L 0.28 1 0.5 Y IR88-MW68UCH 3839112.259 284790.719 12/3/2019 GW Vinyl chloride 1.8 J UG_L 0.017 0.1 0.05 Y IR88-MW68UCH 3839112.259 284790.719 12/3/2019 GW cis-1,2-Dichloroethene 67 UG_L 0.21 1 0.5 Y IR88-MW68UCH 3839112.259 284790.719 12/3/2019 GW Tetrachloroethene 230 UG_L 0.8 2 1 Y IR88-MW68UCH 3839112.259 284790.719 12/3/2019 GW Trichloroethene 78 UG_L 0.28 1 0.5 Y IR88-MW68UCH 3839112.259 284790.719 12/3/2019 GW Vinyl chloride 0.92 J UG_L 0.017 0.1 0.05 Y IR88-MW68UCH 3839112.259 284790.719 4/17/2020 GW cis-1,2-Dichloroethene 83 UG_L 0.21 1 0.5 Y IR88-MW68UCH 3839112.259 284790.719 4/17/2020 GW Tetrachloroethene 160 J UG_L 0.8 2 1 Y IR88-MW68UCH 3839112.259 284790.719 4/17/2020 GW Trichloroethene 62 J UG_L 0.28 1 0.5 Y IR88-MW68UCH 3839112.259 284790.719 4/17/2020 GW Vinyl chloride 0.9 J UG_L 0.017 0.1 0.05 Y IR88-MW68UCH 3839112.259 284790.719 4/17/2020 GW cis-1,2-Dichloroethene 67 UG_L 0.21 1 0.5 Y IR88-MW68UCH 3839112.259 284790.719 4/17/2020 GW Tetrachloroethene 300 J UG_L 1.6 4 2 Y IR88-MW68UCH 3839112.259 284790.719 4/17/2020 GW Trichloroethene 90 J UG_L 0.28 1 0.5 Y IR88-MW68UCH 3839112.259 284790.719 4/17/2020 GW Vinyl chloride 0.83 UG_L 0.017 0.1 0.05 Y IR88-MW68UCH 3839112.259 284790.719 11/4/2020 GW cis-1,2-Dichloroethene 120 J UG_L 0.21 1 0.5 Y IR88-MW68UCH 3839112.259 284790.719 11/4/2020 GW Tetrachloroethene 140 UG_L 0.8 2 1 Y IR88-MW68UCH 3839112.259 284790.719 11/4/2020 GW Trichloroethene 85 J UG_L 0.28 1 0.5 Y IR88-MW68UCH 3839112.259 284790.719 11/4/2020 GW Vinyl chloride 0.61 J UG_L 0.017 0.1 0.05 Y IR88-MW68UCH 3839112.259 284790.719 9/9/2021 GW cis-1,2-Dichloroethene 56 UG_L 0.42 2 1 Y IR88-MW68UCH 3839112.259 284790.719 9/9/2021 GW Tetrachloroethene 140 UG_L 0.8 2 1 Y IR88-MW68UCH 3839112.259 284790.719 9/9/2021 GW Trichloroethene 62 UG_L 0.56 2 1 Y IR88-MW68UCH 3839112.259 284790.719 9/9/2021 GW Vinyl chloride 0.42 J UG_L 0.017 0.1 0.05 Y IR88-MW68UCH 3839112.259 284790.719 2/15/2022 GW cis-1,2-Dichloroethene 120 J UG_L 0.21 1 0.5 Y IR88-MW68UCH 3839112.259 284790.719 2/15/2022 GW Tetrachloroethene 440 J UG_L 2 5 2.5 Y IR88-MW68UCH 3839112.259 284790.719 2/15/2022 GW Trichloroethene 100 J UG_L 0.28 1 0.5 Y IR88-MW68UCH 3839112.259 284790.719 2/15/2022 GW Vinyl chloride 0.51 J UG_L 0.017 0.1 0.05 Y IR88-MW68UCH 3839112.259 284790.719 8/23/2022 GW cis-1,2-Dichloroethene 83 J UG_L 0.21 1 0.5 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW68UCH 3839112.259 284790.719 8/23/2022 GW Tetrachloroethene 150 J UG_L 0.4 1 0.5 Y IR88-MW68UCH 3839112.259 284790.719 8/23/2022 GW Trichloroethene 86 J UG_L 0.28 1 0.5 Y IR88-MW68UCH 3839112.259 284790.719 8/23/2022 GW Vinyl chloride 0.34 J UG_L 0.017 0.1 0.05 Y IR88-MW69UCH 3839112.258 284784.629 2/4/2019 GW Benzene 0.5 U UG_L 0.2 1 0.5 N IR88-MW69UCH 3839112.258 284784.629 2/4/2019 GW cis-1,2-Dichloroethene 9.78 UG_L 0.2 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 2/4/2019 GW Naphthalene 0.5 U UG_L 0.2 5 0.5 N IR88-MW69UCH 3839112.258 284784.629 2/4/2019 GW Tetrachloroethene 3.52 UG_L 0.2 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 2/4/2019 GW Trichloroethene 5.62 UG_L 0.2 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 2/4/2019 GW Vinyl chloride 0.5 U UG_L 0.2 1 0.5 N IR88-MW69UCH 3839112.258 284784.629 12/5/2019 GW cis-1,2-Dichloroethene 6.4 UG_L 0.21 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 12/5/2019 GW Tetrachloroethene 2.3 UG_L 0.4 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 12/5/2019 GW Trichloroethene 5.8 UG_L 0.28 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 12/5/2019 GW Vinyl chloride 0.051 J UG_L 0.017 0.1 0.05 Y IR88-MW69UCH 3839112.258 284784.629 4/17/2020 GW cis-1,2-Dichloroethene 10 UG_L 0.21 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 4/17/2020 GW Tetrachloroethene 5.1 UG_L 0.4 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 4/17/2020 GW Trichloroethene 8.5 UG_L 0.28 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 4/17/2020 GW Vinyl chloride 0.044 J UG_L 0.017 0.1 0.05 Y IR88-MW69UCH 3839112.258 284784.629 11/4/2020 GW cis-1,2-Dichloroethene 3.7 UG_L 0.21 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 11/4/2020 GW Tetrachloroethene 0.93 J UG_L 0.4 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 11/4/2020 GW Trichloroethene 3.4 UG_L 0.28 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 11/4/2020 GW Vinyl chloride 0.047 J UG_L 0.017 0.1 0.05 Y IR88-MW69UCH 3839112.258 284784.629 9/13/2021 GW cis-1,2-Dichloroethene 3.8 UG_L 0.21 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 9/13/2021 GW Tetrachloroethene 0.8 J UG_L 0.4 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 9/13/2021 GW Trichloroethene 4.4 UG_L 0.28 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 9/13/2021 GW Vinyl chloride 0.042 J UG_L 0.017 0.1 0.05 Y IR88-MW69UCH 3839112.258 284784.629 2/17/2022 GW cis-1,2-Dichloroethene 4.9 J UG_L 0.21 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 2/17/2022 GW Tetrachloroethene 0.76 J UG_L 0.4 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 2/17/2022 GW Trichloroethene 5.1 J UG_L 0.28 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 2/17/2022 GW Vinyl chloride 0.028 J UG_L 0.017 0.1 0.05 Y IR88-MW69UCH 3839112.258 284784.629 8/22/2022 GW cis-1,2-Dichloroethene 3.7 J UG_L 0.21 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 8/22/2022 GW Tetrachloroethene 0.61 J UG_L 0.4 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 8/22/2022 GW Trichloroethene 4.2 J UG_L 0.28 1 0.5 Y IR88-MW69UCH 3839112.258 284784.629 8/22/2022 GW Vinyl chloride 0.021 J UG_L 0.017 0.1 0.05 Y IR88-MW70UCH 339465.486 2496546.236 11/9/2020 GW Alkalinity 160 MG_L 0.23 5 4 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW70UCH 339465.486 2496546.236 11/9/2020 GW BAV1 R-Dase 3.1 CELLS_ML 0.067 0.3 Y IR88-MW70UCH 339465.486 2496546.236 11/9/2020 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW70UCH 339465.486 2496546.236 11/9/2020 GW Chloride 6.2 MG_L 0.0993 2 1 Y IR88-MW70UCH 339465.486 2496546.236 11/9/2020 GW cis-1,2-Dichloroethene 140 UG_L 0.21 1 0.5 Y IR88-MW70UCH 339465.486 2496546.236 11/9/2020 GW Dehalococcoides 35800 CELLS_ML 0.067 0.3 Y IR88-MW70UCH 339465.486 2496546.236 11/9/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-MW70UCH 339465.486 2496546.236 11/9/2020 GW Ethene 0.29 MG_L 0.002 0.01 0.005 Y IR88-MW70UCH 339465.486 2496546.236 11/9/2020 GW Methane 3.3 MG_L 0.048 0.25 0.12 Y IR88-MW70UCH 339465.486 2496546.236 11/9/2020 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW70UCH 339465.486 2496546.236 11/9/2020 GW TCE R-Dase 12100 CELLS_ML 0.067 0.3 Y IR88-MW70UCH 339465.486 2496546.236 11/9/2020 GW Tetrachloroethene 3.2 UG_L 0.4 1 0.5 Y IR88-MW70UCH 339465.486 2496546.236 11/9/2020 GW Total organic carbon (TOC) 7.1 MG_L 0.1 1 0.5 Y IR88-MW70UCH 339465.486 2496546.236 11/9/2020 GW Trichloroethene 1 UG_L 0.28 1 0.5 Y IR88-MW70UCH 339465.486 2496546.236 11/9/2020 GW VC R-Dase 0.3 U CELLS_ML 0.067 0.3 N IR88-MW70UCH 339465.486 2496546.236 11/9/2020 GW Vinyl chloride 280 UG_L 0.5 4 2 Y IR88-MW70UCH 339465.486 2496546.236 11/9/2020 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW Alkalinity 280 MG_L 0.23 5 4 Y IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW BAV1 R-Dase 0.4 U CELLS_ML 0.077 0.4 N IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW Chloride 17 MG_L 0.099 2 1 Y IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW cis-1,2-Dichloroethene 0.65 J UG_L 0.21 1 0.5 Y IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW Dehalococcoides 92.6 CELLS_ML 0.077 0.4 Y IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW Ethane 0.028 MG_L 0.0022 0.01 0.005 Y IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW Ethene 0.11 MG_L 0.002 0.01 0.005 Y IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW Methane 18 L MG_L 0.039 0.2 0.1 Y IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW Nitrate 0.037 J MG_L 0.017 0.05 0.025 Y IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW Nitrite 0.27 MG_L 0.0092 0.05 0.025 Y IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW TCE R-Dase 6.7 CELLS_ML 0.077 0.4 Y IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW Total organic carbon (TOC) 5.2 MG_L 0.1 1 0.5 Y IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW VC R-Dase 0.4 U CELLS_ML 0.077 0.4 N IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW Vinyl chloride 6.2 UG_L 0.25 2 1 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW70UCH 339465.486 2496546.236 9/14/2021 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW Alkalinity 250 MG_L 0.23 5 4 Y IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW BAV1 R-Dase 0.7 CELLS_ML 0.08 0.4 Y IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW Benzene 0.3 J UG_L 0.26 1 0.5 Y IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW Chloride 16 MG_L 0.099 2 1 Y IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW cis-1,2-Dichloroethene 0.46 J UG_L 0.21 1 0.5 Y IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW Dehalococcoides 75.9 CELLS_ML 0.08 0.4 Y IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW Ethane 0.057 MG_L 0.0022 0.01 0.005 Y IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW Ethene 0.0086 J MG_L 0.002 0.01 0.005 Y IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW Methane 21 MG_L 0.049 0.25 0.12 Y IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW Nitrate 0.038 J MG_L 0.017 0.05 0.025 Y IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW Nitrite 0.54 MG_L 0.0092 0.05 0.025 Y IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW TCE R-Dase 21.6 CELLS_ML 0.08 0.4 Y IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW Total organic carbon (TOC) 5.3 MG_L 0.1 1 0.5 Y IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW VC R-Dase 0.7 CELLS_ML 0.08 0.4 Y IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW Vinyl chloride 1.5 UG_L 0.017 0.1 0.05 Y IR88-MW70UCH 339465.486 2496546.236 3/4/2022 GW Sulfide 0.7 J MG_L 0.69 1 0.8 Y IR88-MW70UCH 339465.486 2496546.236 8/22/2022 GW Alkalinity 240 MG_L 0.23 5 4 Y IR88-MW70UCH 339465.486 2496546.236 8/22/2022 GW Benzene 0.5 U UG_L 0.26 1 0.5 N IR88-MW70UCH 339465.486 2496546.236 8/22/2022 GW Chloride 16 MG_L 0.099 2 1 Y IR88-MW70UCH 339465.486 2496546.236 8/22/2022 GW cis-1,2-Dichloroethene 0.93 J UG_L 0.21 1 0.5 Y IR88-MW70UCH 339465.486 2496546.236 8/22/2022 GW Ethane 0.07 MG_L 0.0022 0.01 0.005 Y IR88-MW70UCH 339465.486 2496546.236 8/22/2022 GW Ethene 0.0021 J MG_L 0.002 0.01 0.005 Y IR88-MW70UCH 339465.486 2496546.236 8/22/2022 GW Methane 10 MG_L 0.097 0.5 0.25 Y IR88-MW70UCH 339465.486 2496546.236 8/22/2022 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-MW70UCH 339465.486 2496546.236 8/22/2022 GW Nitrate 0.04 J MG_L 0.017 0.05 0.025 Y IR88-MW70UCH 339465.486 2496546.236 8/22/2022 GW Nitrite 0.46 MG_L 0.0092 0.05 0.025 Y IR88-MW70UCH 339465.486 2496546.236 8/22/2022 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-MW70UCH 339465.486 2496546.236 8/22/2022 GW Total organic carbon (TOC) 5.5 MG_L 0.37 1 0.75 Y IR88-MW70UCH 339465.486 2496546.236 8/22/2022 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-MW70UCH 339465.486 2496546.236 8/22/2022 GW Vinyl chloride 0.69 UG_L 0.017 0.1 0.05 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-MW70UCH 339465.486 2496546.236 8/22/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-RABITTMW1 3839172.166 284751.816 7/23/2002 GW Benzene 10 U UG_L 10 N IR88-RABITTMW1 3839172.166 284751.816 7/23/2002 GW Chloride 23200 UG_L 10000 Y IR88-RABITTMW1 3839172.166 284751.816 7/23/2002 GW cis-1,2-Dichloroethene 2 J UG_L 10 Y IR88-RABITTMW1 3839172.166 284751.816 7/23/2002 GW Ethane 150 U UG_L 150 N IR88-RABITTMW1 3839172.166 284751.816 7/23/2002 GW Ethene 74 J UG_L 150 Y IR88-RABITTMW1 3839172.166 284751.816 7/23/2002 GW Ferrous iron 680 UG_L 100 Y IR88-RABITTMW1 3839172.166 284751.816 7/23/2002 GW Methane 1200 UG_L 100 Y IR88-RABITTMW1 3839172.166 284751.816 7/23/2002 GW Nitrate 50 U UG_L 50 N IR88-RABITTMW1 3839172.166 284751.816 7/23/2002 GW Tetrachloroethene 10 U UG_L 10 N IR88-RABITTMW1 3839172.166 284751.816 7/23/2002 GW Total organic carbon (TOC) 43200 UG_L 5000 Y IR88-RABITTMW1 3839172.166 284751.816 7/23/2002 GW Trichloroethene 10 U UG_L 10 N IR88-RABITTMW1 3839172.166 284751.816 7/23/2002 GW Vinyl chloride 4 J UG_L 10 Y IR88-RABITTMW1 3839172.166 284751.816 7/23/2002 GW Sulfide 800 UG_L 500 Y IR88-RABITTMW1 3839172.166 284751.816 4/16/2020 GW Alkalinity 740 MG_L 0.23 5 4 Y IR88-RABITTMW1 3839172.166 284751.816 4/16/2020 GW BAV1 R-Dase 15.7 CELLS_ML 0.054 0.3 Y IR88-RABITTMW1 3839172.166 284751.816 4/16/2020 GW Benzene 0.6 J UG_L 0.26 1 0.5 Y IR88-RABITTMW1 3839172.166 284751.816 4/16/2020 GW Chloride 22 MG_L 0.2 4 2 Y IR88-RABITTMW1 3839172.166 284751.816 4/16/2020 GW cis-1,2-Dichloroethene 0.34 J UG_L 0.21 1 0.5 Y IR88-RABITTMW1 3839172.166 284751.816 4/16/2020 GW Dehalococcoides 938 CELLS_ML 0.054 0.3 Y IR88-RABITTMW1 3839172.166 284751.816 4/16/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-RABITTMW1 3839172.166 284751.816 4/16/2020 GW Ethene 1 MG_L 0.002 0.01 0.005 Y IR88-RABITTMW1 3839172.166 284751.816 4/16/2020 GW Methane 27 MG_L 0.048 0.25 0.12 Y IR88-RABITTMW1 3839172.166 284751.816 4/16/2020 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-RABITTMW1 3839172.166 284751.816 4/16/2020 GW TCE R-Dase 152 CELLS_ML 0.054 0.3 Y IR88-RABITTMW1 3839172.166 284751.816 4/16/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-RABITTMW1 3839172.166 284751.816 4/16/2020 GW Total organic carbon (TOC) 200 MG_L 0.1 1 0.5 Y IR88-RABITTMW1 3839172.166 284751.816 4/16/2020 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-RABITTMW1 3839172.166 284751.816 4/16/2020 GW VC R-Dase 16.9 CELLS_ML 0.054 0.3 Y IR88-RABITTMW1 3839172.166 284751.816 4/16/2020 GW Vinyl chloride 0.27 J UG_L 0.017 0.1 0.05 Y IR88-RABITTMW1 3839172.166 284751.816 4/16/2020 GW Sulfide 0.72 J MG_L 0.69 1 0.8 Y IR88-RABITTMW1 3839172.166 284751.816 11/5/2020 GW Alkalinity 920 MG_L 0.23 5 4 Y IR88-RABITTMW1 3839172.166 284751.816 11/5/2020 GW BAV1 R-Dase 23.4 CELLS_ML 0.063 0.3 Y IR88-RABITTMW1 3839172.166 284751.816 11/5/2020 GW Benzene 0.64 J UG_L 0.26 1 0.5 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-RABITTMW1 3839172.166 284751.816 11/5/2020 GW Chloride 20 MG_L 0.2 4 2 Y IR88-RABITTMW1 3839172.166 284751.816 11/5/2020 GW cis-1,2-Dichloroethene 0.5 U UG_L 0.21 1 0.5 N IR88-RABITTMW1 3839172.166 284751.816 11/5/2020 GW Dehalococcoides 372 CELLS_ML 0.063 0.3 Y IR88-RABITTMW1 3839172.166 284751.816 11/5/2020 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-RABITTMW1 3839172.166 284751.816 11/5/2020 GW Ethene 0.68 MG_L 0.002 0.01 0.005 Y IR88-RABITTMW1 3839172.166 284751.816 11/5/2020 GW Methane 23 MG_L 0.19 1 0.5 Y IR88-RABITTMW1 3839172.166 284751.816 11/5/2020 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-RABITTMW1 3839172.166 284751.816 11/5/2020 GW TCE R-Dase 45.9 CELLS_ML 0.063 0.3 Y IR88-RABITTMW1 3839172.166 284751.816 11/5/2020 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-RABITTMW1 3839172.166 284751.816 11/5/2020 GW Total organic carbon (TOC) 330 MG_L 0.2 2 1 Y IR88-RABITTMW1 3839172.166 284751.816 11/5/2020 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-RABITTMW1 3839172.166 284751.816 11/5/2020 GW VC R-Dase 18.2 CELLS_ML 0.063 0.3 Y IR88-RABITTMW1 3839172.166 284751.816 11/5/2020 GW Vinyl chloride 0.31 J UG_L 0.017 0.1 0.05 Y IR88-RABITTMW1 3839172.166 284751.816 11/5/2020 GW Sulfide 1.1 MG_L 0.69 1 0.8 Y IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW Alkalinity 370 MG_L 0.23 5 4 Y IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW BAV1 R-Dase 5600 CELLS_ML 0.077 0.4 Y IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW Benzene 0.52 J UG_L 0.26 1 0.5 Y IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW Chloride 26 MG_L 0.2 4 2 Y IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW cis-1,2-Dichloroethene 2400 J UG_L 4.2 20 10 Y IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW Dehalococcoides 59200 CELLS_ML 0.077 0.4 Y IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW Ethane 0.011 MG_L 0.0022 0.01 0.005 Y IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW Ethene 0.94 MG_L 0.002 0.01 0.005 Y IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW Methane 4 MG_L 0.019 0.1 0.05 Y IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW Nitrate 0.025 U MG_L 0.015 0.05 0.025 N IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW Nitrite 0.025 U MG_L 0.0032 0.05 0.025 N IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW TCE R-Dase 603 CELLS_ML 0.077 0.4 Y IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW Total organic carbon (TOC) 0.88 J MG_L 0.1 1 0.5 Y IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW VC R-Dase 3810 CELLS_ML 0.077 0.4 Y IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW Vinyl chloride 2400 J UG_L 5 40 20 Y IR88-RABITTMW1 3839172.166 284751.816 9/7/2021 GW Sulfide 1.2 MG_L 0.69 1 0.8 Y IR88-RABITTMW1 3839172.166 284751.816 8/18/2022 GW Alkalinity 370 MG_L 0.23 5 4 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-RABITTMW1 3839172.166 284751.816 8/18/2022 GW Benzene 2.5 U UG_L 1.3 5 2.5 N IR88-RABITTMW1 3839172.166 284751.816 8/18/2022 GW Chloride 21 MG_L 0.2 4 2 Y IR88-RABITTMW1 3839172.166 284751.816 8/18/2022 GW cis-1,2-Dichloroethene 7000 J UG_L 10 50 25 Y IR88-RABITTMW1 3839172.166 284751.816 8/18/2022 GW Ethane 0.005 U MG_L 0.0022 0.01 0.005 N IR88-RABITTMW1 3839172.166 284751.816 8/18/2022 GW Ethene 0.1 MG_L 0.002 0.01 0.005 Y IR88-RABITTMW1 3839172.166 284751.816 8/18/2022 GW Methane 0.16 MG_L 0.0019 0.01 0.005 Y IR88-RABITTMW1 3839172.166 284751.816 8/18/2022 GW Naphthalene 2.5 U UG_L 1.5 5 2.5 N IR88-RABITTMW1 3839172.166 284751.816 8/18/2022 GW Nitrate 0.041 J MG_L 0.017 0.05 0.025 Y IR88-RABITTMW1 3839172.166 284751.816 8/18/2022 GW Nitrite 0.5 MG_L 0.0092 0.05 0.025 Y IR88-RABITTMW1 3839172.166 284751.816 8/18/2022 GW Tetrachloroethene 2.5 U UG_L 2 5 2.5 N IR88-RABITTMW1 3839172.166 284751.816 8/18/2022 GW Total organic carbon (TOC) 1.2 MG_L 0.37 1 0.75 Y IR88-RABITTMW1 3839172.166 284751.816 8/18/2022 GW Trichloroethene 2.5 U UG_L 1.4 5 2.5 N IR88-RABITTMW1 3839172.166 284751.816 8/18/2022 GW Vinyl chloride 1800 J UG_L 12 100 50 Y IR88-RABITTMW1 3839172.166 284751.816 8/18/2022 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-RABITTMW1 3839172.166 284751.816 10/12/2011 GW Benzene 25 U UG_L 12.5 50 25 N IR88-RABITTMW1 3839172.166 284751.816 10/12/2011 GW cis-1,2-Dichloroethene 798 UG_L 12.5 50 25 Y IR88-RABITTMW1 3839172.166 284751.816 10/12/2011 GW Tetrachloroethene 16000 UG_L 50 200 100 Y IR88-RABITTMW1 3839172.166 284751.816 10/12/2011 GW Trichloroethene 2510 UG_L 12.5 50 25 Y IR88-RABITTMW1 3839172.166 284751.816 10/12/2011 GW Vinyl chloride 131 UG_L 12.5 50 25 Y IR88-RABITTMW1 3839172.166 284751.816 12/12/2019 GW Alkalinity 520 MG_L 0.23 5 4 Y IR88-RABITTMW1 3839172.166 284751.816 12/12/2019 GW BAV1 R-Dase 309 CELLS_ML 0.067 0.3 Y IR88-RABITTMW1 3839172.166 284751.816 12/12/2019 GW Benzene 0.32 J UG_L 0.26 1 0.5 Y IR88-RABITTMW1 3839172.166 284751.816 12/12/2019 GW Chloride 23 MG_L 0.2 4 2 Y IR88-RABITTMW1 3839172.166 284751.816 12/12/2019 GW cis-1,2-Dichloroethene 2.1 U UG_L 0.21 1 0.5 N IR88-RABITTMW1 3839172.166 284751.816 12/12/2019 GW Dehalococcoides 5070 CELLS_ML 0.067 0.3 Y IR88-RABITTMW1 3839172.166 284751.816 12/12/2019 GW Ethane 0.0041 J MG_L 0.0022 0.01 0.005 Y IR88-RABITTMW1 3839172.166 284751.816 12/12/2019 GW Ethene 1.8 MG_L 0.002 0.01 0.005 Y IR88-RABITTMW1 3839172.166 284751.816 12/12/2019 GW Methane 16 MG_L 0.097 0.5 0.25 Y IR88-RABITTMW1 3839172.166 284751.816 12/12/2019 GW Naphthalene 0.5 U UG_L 0.3 1 0.5 N IR88-RABITTMW1 3839172.166 284751.816 12/12/2019 GW TCE R-Dase 1300 CELLS_ML 0.067 0.3 Y IR88-RABITTMW1 3839172.166 284751.816 12/12/2019 GW Tetrachloroethene 0.5 U UG_L 0.4 1 0.5 N IR88-RABITTMW1 3839172.166 284751.816 12/12/2019 GW Total organic carbon (TOC) 71 MG_L 0.1 1 0.5 Y IR88-RABITTMW1 3839172.166 284751.816 12/12/2019 GW Trichloroethene 0.5 U UG_L 0.28 1 0.5 N IR88-RABITTMW1 3839172.166 284751.816 12/12/2019 GW VC R-Dase 138 CELLS_ML 0.067 0.3 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-RABITTMW1 3839172.166 284751.816 12/12/2019 GW Vinyl chloride 16 UG_L 0.85 5 2.5 Y IR88-RABITTMW1 3839172.166 284751.816 12/12/2019 GW Sulfide 0.8 U MG_L 0.69 1 0.8 N IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW Alkalinity 380 MG_L 0.23 5 4 Y IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW BAV1 R-Dase 15300 CELLS_ML 0.1 0.6 Y IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW Benzene 5 U UG_L 2.6 10 5 N IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW Chloride 23 MG_L 0.2 4 2 Y IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW cis-1,2-Dichloroethene 6800 UG_L 21 100 50 Y IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW Dehalococcoides 84800 CELLS_ML 0.1 0.6 Y IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW Ethane 0.0038 J MG_L 0.0022 0.01 0.005 Y IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW Ethene 0.14 MG_L 0.002 0.01 0.005 Y IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW Methane 0.25 MG_L 0.0019 0.01 0.005 Y IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW Naphthalene 5 U UG_L 3 10 5 N IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW Nitrate 0.057 MG_L 0.017 0.05 0.025 Y IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW Nitrite 0.58 MG_L 0.0092 0.05 0.025 Y IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW TCE R-Dase 17800 CELLS_ML 0.1 0.6 Y IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW Tetrachloroethene 5 U UG_L 4 10 5 N IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW Total organic carbon (TOC) 2 MG_L 0.1 1 0.5 Y IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW Trichloroethene 5 U UG_L 2.8 10 5 N IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW VC R-Dase 11200 CELLS_ML 0.1 0.6 Y IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW Vinyl chloride 1400 UG_L 2.5 20 10 Y IR88-RABITTMW1 3839172.166 284751.816 3/4/2022 GW Sulfide 0.7 J MG_L 0.69 1 0.8 Y IR88-RABITTMW1 3839172.166 284751.816 10/12/2011 GW Benzene 50 U UG_L 25 100 50 N IR88-RABITTMW1 3839172.166 284751.816 10/12/2011 GW cis-1,2-Dichloroethene 742 UG_L 25 100 50 Y IR88-RABITTMW1 3839172.166 284751.816 10/12/2011 GW Tetrachloroethene 13200 UG_L 25 100 50 Y IR88-RABITTMW1 3839172.166 284751.816 10/12/2011 GW Trichloroethene 2210 UG_L 25 100 50 Y IR88-RABITTMW1 3839172.166 284751.816 10/12/2011 GW Vinyl chloride 112 UG_L 25 100 50 Y IR88-RABITTMW1 3839172.166 284751.816 10/23/2014 GW Benzene 25 U UG_L 12.5 50 25 N IR88-RABITTMW1 3839172.166 284751.816 10/23/2014 GW cis-1,2-Dichloroethene 5760 UG_L 12.5 50 25 Y IR88-RABITTMW1 3839172.166 284751.816 10/23/2014 GW Naphthalene 25 U UG_L 12.5 50 25 N IR88-RABITTMW1 3839172.166 284751.816 10/23/2014 GW Tetrachloroethene 5240 UG_L 12.5 50 25 Y IR88-RABITTMW1 3839172.166 284751.816 10/23/2014 GW Trichloroethene 8240 UG_L 12.5 50 25 Y IR88-RABITTMW1 3839172.166 284751.816 10/23/2014 GW Vinyl chloride 53 UG_L 12.5 50 25 Y IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW Alkalinity 331 MG_L 0.26 1 0.5 Y IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW BAV1 R-Dase 3.6 CELLS_ML 0.1 0.5 Y Attachment 5. Historical Results Long-Term Monitoring Report Installation Restoration Program Site 88 Fiscal Year 2022 Marine Corps Base Camp Lejeune North Carolina Location Name Northing Easting Sample Date Sample Matrix Analyte Name Result Value Result Flag Result Units Method Detection Limit Reporting Limit Limit of Detection Detected IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW Benzene 12.5 U UG_L 5 25 12.5 N IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW Chloride 22.6 MG_L 0.5 2 1 Y IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW cis-1,2-Dichloroethene 6650 J UG_L 5 25 12.5 Y IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW Dehalococcoides 276 CELLS_ML 0.1 0.5 Y IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW Ethane 0.00597 MG_L 0.00011 0.001 0.00022 Y IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW Ethene 0.00357 MG_L 0.00015 0.001 0.00029 Y IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW Methane 0.313 MG_L 0.0087 0.04 0.0218 Y IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW Naphthalene 12.5 U UG_L 5 125 12.5 N IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW Nitrate 0.15 U MG_L 0.1 0.2 0.15 N IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW Nitrite 0.15 U MG_L 0.1 0.2 0.15 N IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW TCE R-Dase 37.8 CELLS_ML 0.1 0.5 Y IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW Tetrachloroethene 4720 J UG_L 5 25 12.5 Y IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW Total organic carbon (TOC) 4.02 MG_L 0.3 2 1 Y IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW Trichloroethene 6070 J UG_L 5 25 12.5 Y IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW VC R-Dase 4.5 CELLS_ML 0.1 0.5 Y IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW Vinyl chloride 19.5 J UG_L 5 25 12.5 Y IR88-RABITTMW1 3839172.166 284751.816 1/31/2019 GW Sulfide 1.5 U MG_L 1.08 2 1.5 N IR88-RABITTMW1 3839172.166 284751.816 10/23/2014 GW Benzene 25 U UG_L 12.5 50 25 N IR88-RABITTMW1 3839172.166 284751.816 10/23/2014 GW cis-1,2-Dichloroethene 5640 UG_L 12.5 50 25 Y IR88-RABITTMW1 3839172.166 284751.816 10/23/2014 GW Naphthalene 25 U UG_L 12.5 50 25 N IR88-RABITTMW1 3839172.166 284751.816 10/23/2014 GW Tetrachloroethene 4570 UG_L 12.5 50 25 Y IR88-RABITTMW1 3839172.166 284751.816 10/23/2014 GW Trichloroethene 7290 UG_L 12.5 50 25 Y IR88-RABITTMW1 3839172.166 284751.816 10/23/2014 GW Vinyl chloride 56.5 UG_L 12.5 50 25 Y Attachment 6 Trend Graphs 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 1999 2003 2007 2011 2015 2019 2023 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW02 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 1999 2003 2007 2011 2015 2019 2023 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW05 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 1999 2003 2007 2011 2015 2019 2023 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW06 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 1999 2003 2007 2011 2015 2019 2023 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW25 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 1999 2003 2007 2011 2015 2019 2023 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW58 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 1999 2003 2007 2011 2015 2019 2023 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW60 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.001 0.01 0.1 1 10 100 1,000 10,000 1999 2003 2007 2011 2015 2019 2023 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW02IW 0.1 1 10 100 1,000 10,000 100,000 1,000,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.001 0.01 0.1 1 10 100 1,000 10,000 1999 2003 2007 2011 2015 2019 2023 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW05IW 0.1 1 10 100 1,000 10,000 100,000 1,000,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.001 0.01 0.1 1 10 100 1,000 10,000 1999 2003 2007 2011 2015 2019 2023 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW30IW 0.1 1 10 100 1,000 10,000 100,000 1,000,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.001 0.01 0.1 1 10 100 1,000 10,000 1999 2003 2007 2011 2015 2019 2023 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW70UCH 0.1 1 10 100 1,000 10,000 100,000 1,000,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.001 0.01 0.1 1 10 100 1,000 10,000 1999 2003 2007 2011 2015 2019 2023 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-RABITTMW1 0.1 1 10 100 1,000 10,000 100,000 1,000,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.1 1 10 100 1000 10000 100000 1000000 2011 2013 2015 2017 2019 2021 2023 Concentration (µg/L)PCE TCE cis-1,2-DCE VC IR88-MW54IW Notes: Open circles indicate results below laboratory detection limits. Red dashed lines indicate injection event start and end dates 0.1 1 10 100 1000 10000 100000 1000000 2011 2013 2015 2017 2019 2021 2023 Concentration (µg/L)PCE TCE cis-1,2-DCE VC IR88-MW56IW Notes: Open circles indicate results below laboratory detection limits. Red dashed lines indicate injection event start and end dates 0.1 1 10 100 1000 10000 100000 1000000 2008 2010 2012 2014 2016 2018 2020 2022 Concentration (µg/L)PCE TCE cis-1,2-DCE VC IR88-MW39MP-A Notes: Open circles indicate results below laboratory detection limits. Red dashed lines indicate injection event start and end dates 0.01 0.1 1 10 100 1000 10000 100000 1000000 2005 2009 2013 2017 2021 Concentration (µg/L)PCE TCE cis-1,2-DCE VC IR88-MW18DW Notes: Open circles indicate results below laboratory detection limits. Red dashed lines indicate injection event start and end dates 0.01 0.1 1 10 100 1000 10000 100000 1000000 2005 2009 2013 2017 2021 Concentration (µg/L)PCE TCE cis-1,2-DCE VC IR88-MW33DW Notes: Open circles indicate results below laboratory detection limits. Red dashed lines indicate injection event start and end dates 0.01 0.1 1 10 100 1000 10000 100000 1000000 2005 2009 2013 2017 2021 Concentration (µg/L)PCE TCE cis-1,2-DCE VC IR88-MW45DW3 Notes: Open circles indicate results below laboratory detection limits. Red dashed lines indicate injection event start and end dates 0.01 0.1 1 10 100 1000 10000 100000 1000000 2005 2009 2013 2017 2021 Concentration (µg/L)PCE TCE cis-1,2-DCE VC IR88-MW47DW3 Notes: Open circles indicate results below laboratory detection limits. Red dashed lines indicate injection event start and end dates 0.1 1 10 100 1000 10000 100000 1000000 2008 2010 2012 2014 2016 2018 2020 2022 Concentration (µg/L)PCE TCE cis-1,2-DCE VC IR88-MW39MP-B Notes: Open circles indicate results below laboratory detection limits. Red dashed lines indicate injection event start and end dates 0.1 1 10 100 1000 10000 100000 1000000 2008 2010 2012 2014 2016 2018 2020 2022 Concentration (µg/L)PCE TCE cis-1,2-DCE VC IR88-MW39MP-C Notes: Open circles indicate results below laboratory detection limits. Red dashed lines indicate injection event start and end dates 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW15IW 0.01 0.1 1 10 100 1,000 10,000 100,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW20IW 0.01 0.1 1 10 100 1,000 10,000 100,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW21IW 0.01 0.1 1 10 100 1,000 10,000 100,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW22IW 0.01 0.1 1 10 100 1,000 10,000 100,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW48IW 0.01 0.1 1 10 100 1,000 10,000 100,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW49IW 0.01 0.1 1 10 100 1,000 10,000 100,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW63UCH 0.01 0.1 1 10 100 1,000 10,000 100,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW64UCH 0.01 0.1 1 10 100 1,000 10,000 100,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW65UCH 0.01 0.1 1 10 100 1,000 10,000 100,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW66UCH 0.01 0.1 1 10 100 1,000 10,000 100,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW67UCH 0.01 0.1 1 10 100 1,000 10,000 100,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW68UCH 0.01 0.1 1 10 100 1,000 10,000 100,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event 0.001 0.01 0.1 1 10 100 1,000 2005 2009 2013 2017 2021 Concentration (µmol/L)Total VOCs PCE TCE cis-1,2-DCE VC Benzene Naphthalene DHC IR88-MW69UCH 0.01 0.1 1 10 100 1,000 10,000 100,000 DHC (cells/ml)Notes: Open circles indicate results below laboratory detection limits. Red dashed line indicates an injection event Attachment 7 Geochemical Trend Plots IR88-MW02 COC2019 2020 2021 2022 2023 0.0 0.5 1.0 1.5 2.0 YearResult (µmol/L)Parameter cDCE PCE TCE VC GEO2019 2020 2021 2022 2023 0.3 1.0 3.0 10.0 30.0 YearResult (mg/L)Parameter CH4 ETHANE ETHENE FE2+ S2- SO4 TOC MICRO2019 2020 2021 2022 2023 0.1 1.0 10.0 100.0 YearResult (cells/mL)Parameter BAV1-R DHC TCE-R VC-R FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW06 COC2019 2020 2021 2022 2023 0.0025 0.0050 0.0075 0.0100 YearResult (µmol/L)Parameter cDCE PCE TCE VC GEO2019 2020 2021 2022 2023 0.01 0.10 1.00 10.00 YearResult (mg/L)Parameter CH4 ETHANE ETHENE FE2+ S2- SO4 TOC MICRO2019 2020 2021 2022 2023 0.1 0.3 1.0 YearResult (cells/mL)Parameter BAV1-R DHC TCE-R VC-R FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW25 COC2019 2020 2021 2022 2023 0 2 4 6 YearResult (µmol/L)Parameter cDCE PCE TCE VC GEO2019 2020 2021 2022 2023 0.01 0.10 1.00 10.00 100.00 YearResult (mg/L)Parameter CH4 ETHANE ETHENE FE2+ S2- SO4 TOC MICRO2019 2020 2021 2022 2023 0.1 0.3 1.0 YearResult (cells/mL)Parameter BAV1-R DHC TCE-R VC-R FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW58 COC2019 2020 2021 2022 2023 0 1 2 3 YearResult (µmol/L)Parameter cDCE PCE TCE VC GEO2019 2020 2021 2022 2023 0.01 0.10 1.00 10.00 YearResult (mg/L)Parameter CH4 ETHANE ETHENE FE2+ S2- SO4 TOC MICRO2019 2020 2021 2022 2023 0.3 0.5 1.0 YearResult (cells/mL)Parameter BAV1-R DHC TCE-R VC-R FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW02IW COC2019 2020 2021 2022 2023 0 1 2 3 4 YearResult (µmol/L)Parameter cDCE PCE TCE VC GEO2019 2020 2021 2022 2023 0.001 0.010 0.100 1.000 10.000 YearResult (mg/L)Parameter CH4 ETHANE ETHENE FE2+ S2- SO4 TOC MICRO2019 2020 2021 2022 2023 1 100 10,000 YearResult (cells/mL)Parameter BAV1-R DHC TCE-R VC-R FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW05IW COC2019 2020 2021 2022 2023 0 25 50 75 YearResult (µmol/L)Parameter cDCE PCE TCE VC GEO2019 2020 2021 2022 2023 0.01 0.10 1.00 10.00 YearResult (mg/L)Parameter CH4 ETHANE ETHENE FE2+ S2- SO4 TOC MICRO2019 2020 2021 2022 2023 10 1,000 100,000 YearResult (cells/mL)Parameter BAV1-R DHC TCE-R VC-R FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW30IW COC2019 2020 2021 2022 2023 0 100 200 YearResult (µmol/L)Parameter cDCE PCE TCE VC GEO2019 2020 2021 2022 2023 0.1 1.0 10.0 YearResult (mg/L)Parameter CH4 ETHANE ETHENE FE2+ S2- SO4 TOC MICRO2019 2020 2021 2022 2023 10 1,000 100,000 YearResult (cells/mL)Parameter BAV1-R DHC TCE-R VC-R FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW70UCH COC2019 2020 2021 2022 2023 0 1 2 3 4 YearResult (µmol/L)Parameter cDCE PCE TCE VC GEO2019 2020 2021 2022 2023 0.01 0.10 1.00 10.00 YearResult (mg/L)Parameter CH4 ETHANE ETHENE FE2+ S2- SO4 TOC MICRO2019 2020 2021 2022 2023 1 10 100 1,000 10,000 YearResult (cells/mL)Parameter BAV1-R DHC TCE-R VC-R FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-RABITTMW1 COC2019 2020 2021 2022 2023 0 20 40 60 YearResult (µmol/L)Parameter cDCE PCE TCE VC GEO2019 2020 2021 2022 2023 0.01 0.10 1.00 10.00 100.00 YearResult (mg/L)Parameter CH4 ETHANE ETHENE FE2+ S2- SO4 TOC MICRO2019 2020 2021 2022 2023 10 100 1,000 10,000 100,000 YearResult (cells/mL)Parameter BAV1-R DHC TCE-R VC-R FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW33DW COC2019 2020 2021 2022 2023 0 10 20 30 40 YearResult (µmol/L)Parameter cDCE PCE TCE VC Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW39MP-A COC2019 2020 2021 2022 2023 0 50 100 150 YearResult (µmol/L)Parameter cDCE PCE TCE VC FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW39MP-C COC2019 2020 2021 2022 2023 0 5 10 15 YearResult (µmol/L)Parameter cDCE PCE TCE VC FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW45DW3 COC2019 2020 2021 2022 2023 0 50 100 150 YearResult (µmol/L)Parameter cDCE PCE TCE VC Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW47DW3 COC2019 2020 2021 2022 2023 0 25 50 75 YearResult (µmol/L)Parameter cDCE PCE TCE VC Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW54IW COC2019 2020 2021 2022 2023 0 10 20 30 YearResult (µmol/L)Parameter cDCE PCE TCE VC Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW56IW COC2019 2020 2021 2022 2023 0 200 400 600 YearResult (µmol/L)Parameter cDCE PCE TCE VC Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW20IW COC2019 2020 2021 2022 2023 0.00 0.25 0.50 0.75 1.00 YearResult (µmol/L)Parameter cDCE PCE TCE VC GEO2019 2020 2021 2022 2023 0.001 0.010 0.100 1.000 10.000 YearResult (mg/L)Parameter CH4 ETHANE ETHENE FE2+ S2- SO4 TOC MICRO2019 2020 2021 2022 2023 1 10 100 YearResult (cells/mL)Parameter BAV1-R DHC TCE-R VC-R FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW22IW COC2019 2020 2021 2022 2023 0.0 0.5 1.0 YearResult (µmol/L)Parameter cDCE PCE TCE VC GEO2019 2020 2021 2022 2023 0.001 0.010 0.100 1.000 10.000 YearResult (mg/L)Parameter CH4 ETHANE ETHENE FE2+ S2- SO4 TOC MICRO2019 2020 2021 2022 2023 1 10 100 1,000 10,000 YearResult (cells/mL)Parameter BAV1-R DHC TCE-R VC-R FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW48IW COC2019 2020 2021 2022 2023 0.0 0.2 0.4 YearResult (µmol/L)Parameter cDCE PCE TCE VC GEO2019 2020 2021 2022 2023 0.001 0.010 0.100 1.000 10.000 YearResult (mg/L)Parameter CH4 ETHANE ETHENE FE2+ S2- SO4 TOC MICRO2019 2020 2021 2022 2023 0.3 1.0 3.0 10.0 30.0 YearResult (cells/mL)Parameter BAV1-R DHC TCE-R VC-R FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW66UCH COC2019 2020 2021 2022 2023 0.0 0.5 1.0 YearResult (µmol/L)Parameter cDCE PCE TCE VC GEO2019 2020 2021 2022 2023 0.001 0.010 0.100 1.000 10.000 YearResult (mg/L)Parameter CH4 ETHANE ETHENE FE2+ S2- SO4 TOC MICRO2019 2020 2021 2022 2023 1 10 100 1,000 10,000 YearResult (cells/mL)Parameter BAV1-R DHC TCE-R VC-R FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW67UCH COC2019 2020 2021 2022 2023 0.000 0.025 0.050 0.075 YearResult (µmol/L)Parameter cDCE PCE TCE VC GEO2019 2020 2021 2022 2023 0.001 0.010 0.100 1.000 10.000 YearResult (mg/L)Parameter CH4 ETHANE ETHENE FE2+ S2- SO4 TOC MICRO2019 2020 2021 2022 2023 0.1 1.0 10.0 YearResult (cells/mL)Parameter BAV1-R DHC TCE-R VC-R FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW15IW COC2019 2020 2021 2022 2023 0.0 0.1 0.2 0.3 0.4 YearResult (µmol/L)Parameter cDCE PCE TCE VC GEO2019 2020 2021 2022 2023 0.01 0.10 1.00 10.00 100.00 YearResult (mg/L)Parameter CH4 ETHANE ETHENE FE2+ S2- SO4 TOC MICRO2019 2020 2021 2022 2023 0.1 1.0 10.0 100.0 YearResult (cells/mL)Parameter BAV1-R DHC TCE-R VC-R FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW64UCH COC2019 2020 2021 2022 2023 0.0 0.5 1.0 1.5 YearResult (µmol/L)Parameter cDCE PCE TCE VC GEO2019 2020 2021 2022 2023 0.001 0.100 10.000 YearResult (mg/L)Parameter CH4 ETHANE ETHENE FE2+ S2- SO4 TOC MICRO2019 2020 2021 2022 2023 0.1 1.0 10.0 YearResult (cells/mL)Parameter BAV1-R DHC TCE-R VC-R FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales IR88-MW65UCH COC2019 2020 2021 2022 2023 0.00 0.05 0.10 0.15 0.20 0.25 YearResult (µmol/L)Parameter cDCE PCE TCE VC GEO2019 2020 2021 2022 2023 0.01 0.10 1.00 10.00 100.00 YearResult (mg/L)Parameter CH4 ETHANE ETHENE FE2+ S2- SO4 TOC MICRO2019 2020 2021 2022 2023 0.3 1.0 3.0 10.0 YearResult (cells/mL)Parameter BAV1-R DHC TCE-R VC-R FP2019 2020 2021 2022 2023 -200 -20 -2 0 2 20 200 YearResult (mg/L or mV)Parameter DO ORP Open circles indicate results below laboratory detection limits Note: varying y-axis scales Attachment 8 Molar Plots 0 1 2 3 4 0 100 200 300 01/2019 12/2019 04/2020 11/2020 09/2021 03/2022 08/2022Concentration (µM)DHC (cells/mL)PCE TCE cis-1,2-DCE VC DHC IR88-MW02 -0.050 -0.025 0.000 0.025 0.050 12/2019 04/2020 11/2020 09/2021 03/2022 08/2022Concentration (µM)DHC (cells/mL)PCE TCE cis-1,2-DCE VC DHC IR88-MW06 0 2 4 6 0.0 0.5 1.0 1.5 2.0 12/2019 04/2020 11/2020 09/2021 03/2022 08/2022Concentration (µM)DHC (cells/mL)PCE TCE cis-1,2-DCE VC DHC IR88-MW25 0 2 4 6 0 1 2 3 09/2021 03/2022 08/2022Concentration (µM)DHC (cells/mL)PCE TCE cis-1,2-DCE VC DHC IR88-MW58 0.0 0.5 1.0 02/2019Concentration (µM)PCE TCE cis-1,2-DCE VC IR88-MW60 Molar Plots for Surficial Aquifer Zone 1 (nondetects assumed equal to one-half the RL) Page 1 of 1 0 2 4 6 0 10000 20000 30000 40000 01/2019 12/2019 04/2020 11/2020 09/2021 03/2022 08/2022Concentration (µM)DHC (cells/mL)PCE TCE cis-1,2-DCE VC DHC IR88-MW02IW 0 25 50 75 0 20000 40000 60000 01/2019 12/2019 04/2020 11/2020 09/2021 03/2022 08/2022Concentration (µM)DHC (cells/mL)PCE TCE cis-1,2-DCE VC DHC IR88-MW05IW 0 100 200 300 0 50000 100000 150000 12/2019 04/2020 11/2020 09/2021 03/2022 08/2022Concentration (µM)DHC (cells/mL)PCE TCE cis-1,2-DCE VC DHC IR88-MW30IW 0 2 4 6 0 10000 20000 30000 40000 11/2020 09/2021 03/2022 08/2022Concentration (µM)DHC (cells/mL)PCE TCE cis-1,2-DCE VC DHC IR88-MW70UCH 0 50 100 150 0 50000 100000 150000 01/2019 12/2019 04/2020 11/2020 09/2021 03/2022 08/2022Concentration (µM)DHC (cells/mL)PCE TCE cis-1,2-DCE VC DHC IR88-RABITTMW1 Molar Plots for UCH Aquifer Zone 1 (nondetects assumed equal to one-half the RL) Page 1 of 1 0 10 20 30 40 11/2020 09/2021 02/2022 08/2022Concentration (µM)PCE TCE cis-1,2-DCE VC IR88-MW54IW 0 200 400 600 11/2020 09/2021 08/2022Concentration (µM)PCE TCE cis-1,2-DCE VC IR88-MW56IW Molar Plots for UCH Aquifer Zone 2 (nondetects assumed equal to one-half the RL) Page 1 of 1 0 2 4 6 11/2020 09/2021 02/2022 08/2022Concentration (µM)PCE TCE cis-1,2-DCE VC IR88-MW18DW 0 20 40 60 11/2020 09/2021 02/2022 08/2022Concentration (µM)PCE TCE cis-1,2-DCE VC IR88-MW33DW 0 50 100 150 11/2020 09/2021 02/2022 08/2022Concentration (µM)PCE TCE cis-1,2-DCE VC IR88-MW45DW3 0 50 100 11/2020 09/2021 02/2022 08/2022Concentration (µM)PCE TCE cis-1,2-DCE VC IR88-MW47DW3 Molar Plots for MCH Aquifer Zone 2 (nondetects assumed equal to one-half the RL) Page 1 of 1 0 50 100 150 200 12/2020 09/2021 03/2022Concentration (µM)PCE TCE cis-1,2-DCE VC IR88-MW39MP-A 0 100 200 12/2020 09/2021 03/2022Concentration (µM)PCE TCE cis-1,2-DCE VC IR88-MW39MP-B 0 10 20 30 12/2020 09/2021 03/2022Concentration (µM)PCE TCE cis-1,2-DCE VC IR88-MW39MP-C Molar Plots for LCH Aquifer Zone 2 (nondetects assumed equal to one-half the RL) Page 1 of 1 0.0 0.1 0.2 0.3 0.4 0.5 0 50 100 12/2019 04/2020 11/2020 09/2021 02/2022 08/2022Concentration (µM)DHC (cells/mL)PCE TCE cis-1,2-DCE VC DHC IR88-MW15IW 0.0 0.5 1.0 0 50 100 150 01/2019 12/2019 04/2020 11/2020 09/2021 02/2022 08/2022Concentration (µM)DHC (cells/mL)PCE TCE cis-1,2-DCE VC DHC IR88-MW20IW 0.0 0.4 0.8 1.2 02/2019 12/2019 04/2020 11/2020 09/2021 02/2022 08/2022Concentration (µM)PCE TCE cis-1,2-DCE VC IR88-MW21IW 0 1 2 3 0 20000 40000 01/2019 12/2019 04/2020 11/2020 09/2021 02/2022 08/2022Concentration (µM)DHC (cells/mL)PCE TCE cis-1,2-DCE VC DHC IR88-MW22IW 0.0 0.2 0.4 0 10 20 30 40 01/2019 12/2019 04/2020 10/2020 09/2021 02/2022 08/2022Concentration (µM)DHC (cells/mL)PCE TCE cis-1,2-DCE VC DHC IR88-MW48IW 0.00 0.05 0.10 0.15 02/2019 12/2019 04/2020 11/2020 09/2021 02/2022 08/2022Concentration (µM)PCE TCE cis-1,2-DCE VC IR88-MW49IW Molar Plots for UCH Aquifer Zone 3 (nondetects assumed equal to one-half the RL) Page 1 of 3 0.00 0.05 0.10 0.15 02/2019 12/2019 04/2020 11/2020 09/2021 02/2022 08/2022Concentration (µM)PCE TCE cis-1,2-DCE VC IR88-MW63UCH 0 1 2 0 10 20 30 40 50 02/2019 12/2019 04/2020 10/2020 09/2021 03/2022 08/2022Concentration (µM)DHC (cells/mL)PCE TCE cis-1,2-DCE VC DHC IR88-MW64UCH 0.0 0.1 0.2 0.3 0 5 10 15 01/2019 12/2019 04/2020 10/2020 09/2021 02/2022 08/2022Concentration (µM)DHC (cells/mL)PCE TCE cis-1,2-DCE VC DHC IR88-MW65UCH 0.0 0.5 1.0 1.5 2.0 2.5 0 3000 6000 9000 12000 02/2019 12/2019 04/2020 11/2020 09/2021 02/2022 08/2022Concentration (µM)DHC (cells/mL)PCE TCE cis-1,2-DCE VC DHC IR88-MW66UCH 0.00 0.05 0.10 0 10 20 02/2019 12/2019 04/2020 10/2020 09/2021 02/2022 08/2022Concentration (µM)DHC (cells/mL)PCE TCE cis-1,2-DCE VC DHC IR88-MW67UCH 0 1 2 3 4 01/2019 12/2019 04/2020 11/2020 09/2021 02/2022 08/2022Concentration (µM)PCE TCE cis-1,2-DCE VC IR88-MW68UCH Molar Plots for UCH Aquifer Zone 3 (nondetects assumed equal to one-half the RL) Page 2 of 3 0.00 0.05 0.10 0.15 0.20 02/2019 12/2019 04/2020 11/2020 09/2021 02/2022 08/2022Concentration (µM)PCE TCE cis-1,2-DCE VC IR88-MW69UCH Molar Plots for UCH Aquifer Zone 3 (nondetects assumed equal to one-half the RL) Page 3 of 3 Attachment 9 VIMs Checklists VIMS INSPECTION CHECKLIST Date: at well (ID):on:12/14/2021 Yes No Flow Rate Vacuum Flow Velocity Flow Rate (ft3/sec)("wc) (ft/min)(ft3/sec) ≤-10 ≥ 0.12 -19 314 0.26 ≤-10 ≥ 0.15 -19 411 0.34 ≤-10 ≥ 0.16 -13 128 0.10 ≤-7 ≥ 0.16 -20 313 0.26 ≤-7 ≥ 0.22 -20 336 0.27 ≤-10 ≥ 0.22 -20 201 0.16 None Bold and underlined text indicates parameter does not meet operating parameter ≤ -0.01 -1.469 IR88-BLDG37-GE05 IR88-BLDG37-GE06 Instantaneous Differential Pressure Readings Differential Pressure ("wc) Subslab Differential Pressure ("wc) Subslab ID Design Operating Parameters Readings VIMS Components IR88-BLDG37-GE04 VIMS Exhaust ID System Operating Parameters Readings Vacuum IR88-BLDG37-GE02 IR88-BLDG37-GE01 IR88-BLDG37-GE03 Repairs Completed:None. Repairs Recommended: None. Building ID: 37 Onsite Representative: Jose H./CLT Additional Field Members:Matt. M/RAL ("wc) High 64°F, Humidity 80%, Pressure 30.46 "Hg, Wind 4 mph NNW, Prec. 0 in. None Recommended Action Notes: Activity Items Observations Acceptable Visual Inspection 1 - Fan operations Visual was obtained of the blowers in December 2018; all visible components appear in good condition. 2 - Piping, wiring, and gauges condition x IR88-BLDG37-SG08 ≤ -0.01 -1.353 VIMS Vacuum and Flow Rate Measurements IR88-BLDG37-SG07 Weather Conditions: Depth to water reading: (ft btoc) SITE INFORMATION: Site 88 12/14/2021 10.68 6.91 IR78-MW58 IR88-MW03 Page 1 of 3 VIMS INSPECTION CHECKLIST Date: at well (ID):on:12/14/2021 Yes No Flow Rate Vacuum Flow Velocity Flow Rate (ft3/sec)("wc) (ft/min)(ft3/sec) ≤-10 ≥ 0.22 14 261 0.21 ≤-9 ≥ 0.22 14 288 0.24 ≤-10 ≥ 0.21 13 215 0.18 Bold and underlined text indicates parameter does not meet operating parameter Notes: VIMS Exhaust ID System Operating Parameters Readings Vacuum ("wc) IR88-BLDG43-SG17 ≤ -0.01 -1.689 IR88-BLDG43-GE01 IR88-BLDG43-GE02 IR88-BLDG43-GE03 Instantaneous Differential Pressure Readings Subslab ID Design Operating Parameters Readings Differential Pressure ("wc) Subslab Differential Pressure ("wc) IR88-BLDG43-SG06 ≤ -0.01 -0.646 Depth to water reading: (ft btoc) 10.68 6.91 IR78-MW58 IR88-MW03 Recommended Action VIMS Vacuum and Flow Rate Measurements 2 - Piping, wiring, and gauges conditionVisual Inspection 1 - Fan operations None Visual was obtained of the blowers in December 2018; all visible components appear in good condition. x Activity Items Observations Acceptable Repairs Completed:None. Repairs Recommended:None. Building ID: 43 Onsite Representative: Jose H./CLT Additional Field Members:Matt. M/RAL Weather Conditions: High 64°F, Humidity 80%, Pressure 30.46 "Hg, Wind 4 mph NNW, Prec. 0 in. SITE INFORMATION: Site 88 VIMS Components 12/14/2021 Page 2 of 3 VIMS INSPECTION CHECKLIST Date: at well (ID): Yes No Flow velocity (ft/min) 5650 Notes: Bold text indicates parameter does not meet design operating parameter None None Blower Hour Meter:39975.6 Outdoor air VOC reading (ppm):0 Outdoor air H2S reading (ppm):0 Blower exhaust VOC reading (ppm):7.6 Blower exhaust H2S reading (ppm):0 Sewer Ventilation System Components SITE INFORMATION: Site 88 Building ID: HP57 12/14/2021 Onsite Representative: Jose H./CLT Weather Conditions: High 64°F, Humidity 80%, Pressure 30.46 "Hg, Wind 4 mph NNW, Prec. 0 in. Depth to water reading: (ft btoc) 10.68 6.91 IR78-MW58 IR88-MW03 Additional Field Members:Matt. M/RAL Activity Items Observations Acceptable Visual Inspection 1 - Blower operation Visual was obtained of the blowers in December 2018; all visible components appear in good condition. X2 - Piping, wiring, and gauges condition IR88-HP57-MH01 -0.0403 Sewer Ventilation System Measurements Blower Exhaust ID Vacuum Flow Rate ("wc)(ft3/sec) IR88-HP57-SV06 -33 4.62 Manhole/Sewer Vapor ID Differential Pressure ("wc) Repairs Completed: Repairs Recommended: IR88-HP57-MH02 -0.0358 IR88-HP57-MH03 -0.0283 Page 3 of 3 VIMS INSPECTION CHECKLIST Date: at well (ID):on: Yes No Flow Rate Vacuum Flow Velocity Flow Rate (ft3/sec)("wc) (ft/min)(ft3/sec) ≤-10 ≥ 0.12 -20 146 0.12 ≤-10 ≥ 0.15 -19 292 0.24 ≤-10 ≥ 0.16 -11 108 0.09 ≤-7 ≥ 0.16 -20 197 0.16 ≤-7 ≥ 0.22 -20 214 0.18 ≤-10 ≥ 0.22 -20 205 0.17 Bold and underlined text indicates parameter does not meet operating parameter ≤ -0.01 -1.556 IR88-BLDG37-GE05 IR88-BLDG37-GE06 Instantaneous Differential Pressure Readings Differential Pressure ("wc) Subslab Differential Pressure ("wc) Subslab ID Design Operating Parameters Readings VIMS Components IR88-BLDG37-GE04 VIMS Exhaust ID System Operating Parameters Readings Vacuum IR88-BLDG37-GE02 IR88-BLDG37-GE01 IR88-BLDG37-GE03 Repairs Completed:None. Repairs Recommended: None. Building ID: 37 Onsite Representative: Jose H./CLT Additional Field Members:Ted Smith/CLT ("wc) High 59°F, Humidity 24%, Pressure 30.06 "Hg, Wind 6 mph WSW, Prec. 0 in. Recommended Action Notes: Activity Items Observations Acceptable Visual Inspection 1 - Fan operations 2 - Piping, wiring, and gauges condition X X IR88-BLDG37-SG08 ≤ -0.01 -1.255 VIMS Vacuum and Flow Rate Measurements IR88-BLDG37-SG07 Weather Conditions: Depth to water reading: (ft btoc) SITE INFORMATION: Site 88 March 28 - 29, 2022 IR78-MW58 IR88-MW03 Page 1 of 3 11.18 6.45 VIMS INSPECTION CHECKLIST Date: at well (ID):on:3/28/2022 Yes No Flow Rate Vacuum Flow Velocity Flow Rate (ft3/sec)("wc) (ft/min)(ft3/sec) ≤-10 ≥ 0.22 -13 325 0.27 ≤-9 ≥ 0.22 -14 364 0.30 ≤-10 ≥ 0.21 -13 270 0.22 Bold and underlined text indicates parameter does not meet operating parameter Notes: VIMS Exhaust ID System Operating Parameters Readings Vacuum ("wc) IR88-BLDG43-SG17 ≤ -0.01 -1.665 IR88-BLDG43-GE01 IR88-BLDG43-GE02 IR88-BLDG43-GE03 Instantaneous Differential Pressure Readings Subslab ID Design Operating Parameters Readings Differential Pressure ("wc) Subslab Differential Pressure ("wc) IR88-BLDG43-SG06 ≤ -0.01 -0.402 Depth to water reading: (ft btoc) 11.18 6.45 IR78-MW58 IR88-MW03 Recommended Action VIMS Vacuum and Flow Rate Measurements 2 - Piping, wiring, and gauges conditionVisual Inspection 1 - Fan operations X X Activity Items Observations Acceptable Repairs Completed:None. Repairs Recommended:None. Building ID: 43 Onsite Representative: Jose H./CLT Additional Field Members:Ted Smith/CLT Weather Conditions: High 59°F, Humidity 24%, Pressure 30.06 "Hg, Wind 6 mph WSW, Prec. 0 in. SITE INFORMATION: Site 88 VIMS Components March 28 - 29, 2022 Page 2 of 3 VIMS INSPECTION CHECKLIST Date: at well (ID): Yes No Flow velocity (ft/min) 5802 Notes: Bold text indicates parameter does not meet design operating parameter NA NA Blower Hour Meter:42470.2 Outdoor air VOC reading (ppm):0 Outdoor air H2S reading (ppm):0 Blower exhaust VOC reading (ppm):0 Blower exhaust H2S reading (ppm):0 Sewer Ventilation System Components SITE INFORMATION: Site 88 Building ID: HP57 March 28 - 29, 2022 Onsite Representative: Jose H./CLT Weather Conditions: High 59°F, Humidity 24%, Pressure 30.06 "Hg, Wind 6 mph WSW, Prec. 0 in. Depth to water reading: (ft btoc) IR78-MW58 IR88-MW03 Additional Field Members:Ted Smith/CLT Activity Items Acceptable Visual Inspection 1 - Blower operation X X 2 - Piping, wiring, and gauges condition Observations IR88-HP57-MH01 -0.0787 Sewer Ventilation System Measurements Blower Exhaust ID Vacuum Flow Rate ("wc)(ft3/sec) IR88-HP57-SV06 -32 4.75 Manhole/Sewer Vapor ID Differential Pressure ("wc) Repairs Completed: Repairs Recommended: IR88-HP57-MH02 -0.0376 IR88-HP57-MH03 -0.0677 Page 3 of 3 11.18 6.45 VIMS INSPECTION CHECKLIST Date: at well (ID):on:6/21/2022 Yes No Flow Rate Vacuum Flow Velocity Flow Rate (ft3/sec)("wc) (ft/min)(ft3/sec) ≤-10 ≥ 0.12 -18 160 0.13 ≤-10 ≥ 0.15 -18 249 0.20 ≤-10 ≥ 0.16 -17 260 0.21 ≤-7 ≥ 0.16 -20 160 0.13 ≤-7 ≥ 0.22 -20 171 0.14 ≤-10 ≥ 0.22 -19 286 0.23 None Bold and underlined text indicates parameter does not meet operating parameter ≤ -0.01 -1.673 IR88-BLDG37-GE05 IR88-BLDG37-GE06 Instantaneous Differential Pressure Readings Differential Pressure ("wc) Subslab Differential Pressure ("wc) Subslab ID Design Operating Parameters Readings VIMS Components IR88-BLDG37-GE04 VIMS Exhaust ID System Operating Parameters Readings Vacuum IR88-BLDG37-GE02 IR88-BLDG37-GE01 IR88-BLDG37-GE03 Repairs Completed:None. Repairs Recommended: None. Building ID: 37 Onsite Representative: Nat U./CLT Additional Field Members:Matt. M./RAL ("wc) High 86°F, Humidity 64%, Pressure 30.2 "Hg, Wind 3 mph NNW, Prec. 0 in. None Recommended Action Notes: Activity Items Observations Acceptable Visual Inspection 1 - Fan operations Fans on the roof/ceiling and Gauges are ok. 2 - Piping, wiring, and gauges condition Yes IR88-BLDG37-SG08 ≤ -0.01 -1.321 VIMS Vacuum and Flow Rate Measurements IR88-BLDG37-SG07 Weather Conditions: Depth to water reading: (ft btoc) SITE INFORMATION: Site 88 6/21/2022 9.40 6.92 IR78-MW58 IR88-MW03 Page 1 of 3 VIMS INSPECTION CHECKLIST Date: at well (ID):on:6/21/2022 Yes No Flow Rate Vacuum Flow Velocity Flow Rate (ft3/sec)("wc) (ft/min)(ft3/sec) ≤-10 ≥ 0.22 -13 286 0.23 ≤-9 ≥ 0.22 -13 331 0.27 ≤-10 ≥ 0.21 -12 224 0.18 Bold and underlined text indicates parameter does not meet operating parameter Notes: System was off upon arrival at 11:10am. Called Meadows Bob Sellars and they system was restarted back up at 12:30pm but the system shutdown beacause of breaker tripping again. Bob advised the team to check the breaker 15 which was tripped. Turned back the breaker and collected data and Meadows will further troubleshoot the issue. VIMS Exhaust ID System Operating Parameters Readings Vacuum ("wc) IR88-BLDG43-SG17 ≤ -0.01 -1.575 IR88-BLDG43-GE01 IR88-BLDG43-GE02 IR88-BLDG43-GE03 Instantaneous Differential Pressure Readings Subslab ID Design Operating Parameters Readings Differential Pressure ("wc) Subslab Differential Pressure ("wc) IR88-BLDG43-SG06 ≤ -0.01 -0.381 Depth to water reading: (ft btoc) 9.40 6.92 IR78-MW58 IR88-MW03 Recommended Action VIMS Vacuum and Flow Rate Measurements 2 - Piping, wiring, and gauges conditionVisual Inspection 1 - Fan operations Meadows will troubleshoot the breaker tripping issue. System was off (see notes below) No Activity Items Observations Acceptable Repairs Completed:None. Repairs Recommended:None. Building ID: 43 Onsite Representative: Nat U./CLT Additional Field Members:Matt. M./RAL Weather Conditions: High 86°F, Humidity 64%, Pressure 30.2 "Hg, Wind 3 mph NNW, Prec. 0 in. SITE INFORMATION: Site 88 VIMS Components 6/21/2022 Page 2 of 3 VIMS INSPECTION CHECKLIST Date: at well (ID): Yes No Flow velocity (ft/min) 5200 Notes: Bold text indicates parameter does not meet design operating parameter No No Blower Hour Meter:44506.9 Outdoor air VOC reading (ppm):0 Outdoor air H2S reading (ppm):0 Blower exhaust VOC reading (ppm):0 Blower exhaust H2S reading (ppm):0.0/1.0 with GEM 5000 Sewer Ventilation System Components SITE INFORMATION: Site 88 Building ID: HP57 6/21/2022 Onsite Representative: Nat U./CLT Weather Conditions: Depth to water reading: (ft btoc) 9.40 6.92 IR78-MW58 IR88-MW03 Additional Field Members:Matt. M./RAL Activity Items Observations Acceptable Visual Inspection 1 - Blower operation Ok.Yes2 - Piping, wiring, and gauges condition IR88-HP57-MH01 -0.0451 Sewer Ventilation System Measurements Blower Exhaust ID Vacuum Flow Rate ("wc)(ft3/sec) IR88-HP57-SV06 -34 4.25 Manhole/Sewer Vapor ID Differential Pressure ("wc) Repairs Completed: Repairs Recommended: IR88-HP57-MH02 -0.0362 IR88-HP57-MH03 -0.0347 Page 3 of 3 VIMS INSPECTION CHECKLIST Date: at well (ID):on:9/15/2022 Yes No Flow Rate Vacuum Flow Velocity Flow Rate (ft3/sec)("wc) (ft/min)(ft3/sec) ≤-10 ≥ 0.12 -18 191 0.16 ≤-10 ≥ 0.15 -18 267 0.22 ≤-10 ≥ 0.16 -14 195 0.16 ≤-7 ≥ 0.16 NM NM NM ≤-7 ≥ 0.22 -19 161 0.13 ≤-10 ≥ 0.22 -19 155 0.13 Room 118 is no longer occupied. IR88-BLDG37-GE04 was not accessible. Bold and underlined text indicates parameter does not meet operating parameter NM - Not Measured ≤ -0.01 -1.698 IR88-BLDG37-GE05 IR88-BLDG37-GE06 Instantaneous Differential Pressure Readings Differential Pressure ("wc) Subslab Differential Pressure ("wc) Subslab ID Design Operating Parameters Readings VIMS Components IR88-BLDG37-GE04 VIMS Exhaust ID System Operating Parameters Readings Vacuum IR88-BLDG37-GE02 IR88-BLDG37-GE01 IR88-BLDG37-GE03 Repairs Completed:None. Repairs Recommended: None. Building ID: 37 Onsite Representative: Veronica Williams/CLT Additional Field Members:Matt. McClanhan/RAL ("wc) High 82°F, Humidity 57%, Pressure 30.11 "Hg, Wind 13 mph SW, Prec. 0 in. None Recommended Action Notes: Activity Items Observations Acceptable Visual Inspection 1 - Fan operations Operating All in good condition2 - Piping, wiring, and gauges condition Yes IR88-BLDG37-SG08 ≤ -0.01 -1.238 VIMS Vacuum and Flow Rate Measurements IR88-BLDG37-SG07 Weather Conditions: Depth to water reading: (ft btoc) SITE INFORMATION: Site 88 September 14 -15, 2022 8.99 5.86 IR78-MW58 IR88-MW03 Page 1 of 3 VIMS INSPECTION CHECKLIST Date: at well (ID):on:9/15/2022 Yes No Flow Rate Vacuum Flow Velocity Flow Rate (ft3/sec)("wc) (ft/min)(ft3/sec) ≤-10 ≥ 0.22 -13 303 0.25 ≤-9 ≥ 0.22 -14 401 0.33 ≤-10 ≥ 0.21 -14 195 0.16 Bold and underlined text indicates parameter does not meet operating parameter Notes: VIMS Exhaust ID System Operating Parameters Readings Vacuum ("wc) IR88-BLDG43-SG17 ≤ -0.01 -1.725 IR88-BLDG43-GE01 IR88-BLDG43-GE02 IR88-BLDG43-GE03 Instantaneous Differential Pressure Readings Subslab ID Design Operating Parameters Readings Differential Pressure ("wc) Subslab Differential Pressure ("wc) IR88-BLDG43-SG06 ≤ -0.01 -0.402 Depth to water reading: (ft btoc) 8.99 5.86 IR78-MW58 IR88-MW03 Recommended Action VIMS Vacuum and Flow Rate Measurements 2 - Piping, wiring, and gauges conditionVisual Inspection 1 - Fan operations None Operating All in good condition except chipped gauge at IR88-BLDG43-GE02 Yes Activity Items Observations Acceptable Repairs Completed:None. Repairs Recommended:None. Building ID: 43 Onsite Representative: Veronica Williams/CLT Additional Field Members:Matt. McClanhan/RAL Weather Conditions: High 82°F, Humidity 57%, Pressure 30.11 "Hg, Wind 13 mph SW, Prec. 0 in. SITE INFORMATION: Site 88 VIMS Components September 14 -15, 2022 Page 2 of 3 VIMS INSPECTION CHECKLIST Date: at well (ID): Yes No Flow velocity (ft/min) 1250 Notes: GEM: 5000; CH4: 0.0; CO2: 0.0; O2: 20.6; H2S: 0.0; CO: 0.0 Bold text indicates parameter does not meet design operating parameter NA NA Blower Hour Meter:46,574.0 Outdoor air VOC reading (ppm):0 Outdoor air H2S reading (ppm):0 Blower exhaust VOC reading (ppm):0 Blower exhaust H2S reading (ppm):0 Sewer Ventilation System Components SITE INFORMATION: Site 88 Building ID: HP57 September 14 -15, 2022 Onsite Representative: Veronica Williams/CLT Weather Conditions: High 82°F, Humidity 57%, Pressure 30.11 "Hg, Wind 13 mph SW, Prec. 0 in. Depth to water reading: (ft btoc) 8.99 5.86 IR78-MW58 IR88-MW03 Additional Field Members:Matt. McClanhan/RAL Activity Items Observations Acceptable Visual Inspection 1 - Blower operation Operating All in good condition2 - Piping, wiring, and gauges condition IR88-HP57-MH01 -0.0254 Sewer Ventilation System Measurements Blower Exhaust ID Vacuum Flow Rate ("wc)(ft3/sec) IR88-HP57-SV06 -31 1.02 Manhole/Sewer Vapor ID Differential Pressure ("wc) Repairs Completed: Repairs Recommended: IR88-HP57-MH02 -0.0546 IR88-HP57-MH03 -0.043 Page 3 of 3 48 Sunny Attachment 10 Site 88 Remedial Action Summary and Expected Outcomes 1 of 1 Attachment 10. Site 88 Remedial Action Summary and Expected Outcomes Site 88 Long-Term Monitoring Report FY 2022 MCB Camp Lejeune North Carolina Site Media Risk/Basis for Action Reasonably Anticipated Land Use RAO Remedy Component Performance Metric Expected Outcome 88 Groundwater Soil Gas Potential unacceptable risks to future residents exposed to COCs in groundwater and soil gas. Potential unacceptable risks to future construction workers exposed to COCs in groundwater and soil gas. Industrial/ Residential Reduce groundwater contaminant source mass to the maximum extent practicable within a reasonable timeframe to inhibit migration of COCs to the New River ERD For Zones 1 and 2, continue treatment applications as described in the RD or until multiple lines of evidence of MNA are observed including: • Plume stability • Mass reduction • Elimination of NAPL to the extent practicable, based on groundwater concentrations exceeding 1 percent of the solubility of PCE • Groundwater fate and transport modeling indicating protectiveness of the New River • Sustained favorable MNA conditions MNA ISCO Biobarrier Maintain until COC concentrations in groundwater are protective of downgradient receptors (based on fate and transport modeling) and aquifer conditions suggest that biodegradation can be maintained naturally, and further enhancements are not required. Restore groundwater quality to meet NCDEQ and federal primary drinking water standards based on the classification of the aquifer as a potential source of drinking water (Class GA or Class GSA) under 15A North Carolina Administrative Code 02L.0201. MNA Implement until each groundwater COC is at or below the more conservative values between the NCGWQS or the federal MCLs for four consecutive monitoring events. UU/UE Prevent human ingestion of and contact with groundwater containing COCs at concentrations above NCGWQS or MCLs, whichever is more stringent. LUCs Implement LUCs and monitor quarterly until each groundwater COC is at or below the more conservative values between the NCGWQS or the federal MCLs for four consecutive monitoring events. Prevent exposure to COCs in groundwater and soil gas during construction, and through the VI pathway that could result in an unacceptable risk to human health. LUCs/VIMS Implement LUCs until each groundwater COC is at or below its respective cleanup level for four consecutive monitoring events. Once groundwater concentrations are below the cleanup levels, soil gas concentrations are expected to be below concentrations likely to result in a complete VI pathway or unacceptable risk to construction workers. Soil gas confirmation samples will be collected and compared to soil gas cleanup levels. While LUCs are in place, if groundwater concentrations are detected above cleanup levels within 100 feet of a building without a VIMS or sewer ventilation system, a VI evaluation will be conducted. This evaluation will determine whether the potential for a complete VI pathway has changed from previous assessments and whether additional sampling is required. Operate the Building 3B* VIMS and Building HP57 sewer ventilation system until active treatment in Zones 1 and 2 are complete and shutdown criteria, as established in the RD, are met. The following lines of evidence may be considered to evaluate VIMS and sewer ventilation system shutdown: • Results of rebound testing • Additional indoor air and soil gas sampling • Building‐specific attenuation factors • Other empirical evidence Soil Although there are no soil COCs, VOCs remain in soil within the ZVI soil mixing area at concentrations exceeding soil‐to‐groundwater MSCCs, suggesting that contaminated soil could serve as a continuing source to groundwater. Restrict intrusive activities and prevent residential use within the ZVI soil mixing treatment area. LUCs Maintain and monitor LUCs quarterly. If the groundwater remedy cannot achieve the RAOs and data suggest that contaminated soil is acting as a continuing source of groundwater contamination, then additional soil remediation actions will be evaluated. Parking Lot Notes: COC = constituent of concern ERD = enhanced reductive dechlorination FY = fiscal year ISCO = in situ chemical oxidation LUC = land use control MCB = Marine Corps Base MCL = maximum contaminant level MNA = monitored natural attenuation MSCC = maximum soil contaminant concentration NAPL = nonaqueous phase liquid NCDEQ = North Carolina Department of Environmental Quality NCGWQS = North Carolina Groundwater Quality Standard PCE = tetrachloroethene * Building 3B was demolished in June 2022 RAO = remedial action objective RD = remedial design UU/UE = unlimited use/unrestricted exposure VI = vapor intrusion VIMS = vapor intrusion mitigation system VOC = volatile organic compound ZVI = zero valent iron Attachment 11 FY 2023 Sampling Locations and Methods 1 of 3 Attachment 11. FY 2023 Sampling Locations and Methods Site 88 Long-Term Monitoring Report FY 2022 MCB Camp Lejeune North Carolina Sampling Location ID Matrix Aquifer Monitoring Frequency Next Sampling Event Purpose of Sample Sample Method Analytical Group for FY 2023d Zone 1 IR88-MW02 Groundwater Surficial Semiannually FY 2023 ERD LF/WV VOCsa, NAIPs, and microbial populations IR88-MW05 Groundwater Surficial Semiannually FY 2023 ERD LF/WV VOCsa, NAIPs, and microbial populations IR88-MW06 Groundwater Surficial Semiannually FY 2023 ERD LF/WV VOCsa, NAIPs, and microbial populations IR88-MW25 Groundwater Surficial Semiannually FY 2023 ERD LF/WV VOCsa, NAIPs, and microbial populations IR88-MW58 Groundwater Surficial Semiannually FY 2023 ERD LF/WV VOCsa, NAIPs, and microbial populations IR88-MW60 Groundwater Surficial Semiannually FY 2023 ERD LF/WV or HS VOCsa IR88-MW02IW Groundwater UCH Semiannually FY 2023 ERD LF/WV VOCsa, NAIPs, and microbial populations IR88-MW05IW Groundwater UCH Semiannually FY 2023 ERD LF/WV VOCsa, NAIPs, and microbial populations IR88-MW30IW Groundwater UCH Semiannually FY 2023 ERD LF/WV VOCsa, NAIPs, and microbial populations IR88-MW70UCH Groundwater UCH Semiannually FY 2023 ERD LF/WV VOCsa, NAIPs, and microbial populations IR88-RABBITMW1 Groundwater UCH Semiannually FY 2023 ERD LF/WV VOCsa, NAIPs, and microbial populations Zone 2 IR88-MW39MP-A Groundwater UCH Semiannually FY 2023 ISCO LF/WV or HS VOCsb IR88-MW54IW Groundwater UCH Semiannually FY 2023 ISCO LF/WV or HS VOCsa IR88-MW56IW Groundwater UCH Semiannually FY 2023 ISCO LF/WV or HS VOCsa IR88-MW18DW Groundwater MCH Semiannually FY 2023 ISCO LF/WV or HS VOCsb IR88-MW33DW Groundwater MCH Semiannually FY 2023 ISCO LF/WV or HS VOCsb IR88-MW45DW3 Groundwater MCH Semiannually FY 2023 ISCO LF/WV or HS VOCsb IR88-MW47DW3 Groundwater MCH Semiannually FY 2023 ISCO LF/WV or HS VOCsb IR88-MW39MP-B Groundwater MCH Semiannually FY 2023 ISCO LF/WV or HS VOCsb IR88-MW39MP-C Groundwater MCH Semiannually FY 2023 ISCO LF/WV or HS VOCsb 2 of 3 Attachment 11. FY 2023 Sampling Locations and Methods Site 88 Long-Term Monitoring Report FY 2022 MCB Camp Lejeune North Carolina Sampling Location ID Matrix Aquifer Monitoring Frequency Next Sampling Event Purpose of Sample Sample Method Analytical Group for FY 2023d Zone 3 IR88-MW15IW Groundwater UCH Semiannually FY 2023 Biobarrier LF/WV VOCsb, NAIPs, and microbial populations IR88-MW20IW Groundwater UCH Semiannually FY 2023 Biobarrier LF/WV VOCsb, NAIPs, and microbial populations IR88-MW21IW Groundwater UCH Semiannually FY 2023 Biobarrier LF/WV or HS VOCsb IR88-MW22IW Groundwater UCH Semiannually FY 2023 Biobarrier LF/WV VOCsb, NAIPs, and microbial populations IR88-MW48IW Groundwater UCH Semiannually FY 2023 Biobarrier LF/WV VOCsb, NAIPs, and microbial populations IR88-MW49IW Groundwater UCH Semiannually FY 2023 Biobarrier LF/WV or HS VOCsb IR88-MW63UCH Groundwater UCH Semiannually FY 2023 Biobarrier LF/WV or HS VOCsb IR88-MW64UCH Groundwater UCH Semiannually FY 2023 Biobarrier LF/WV VOCsb, NAIPs, and microbial populations IR88-MW65UCH Groundwater UCH Semiannually FY 2023 Biobarrier LF/WV VOCsb, NAIPs, and microbial populations IR88-MW66UCH Groundwater UCH Semiannually FY 2023 Biobarrier LF/WV VOCsb, NAIPs, and microbial populations IR88-MW67UCH Groundwater UCH Semiannually FY 2023 Biobarrier LF/WV VOCsb, NAIPs, and microbial populations IR88-MW68UCH Groundwater UCH Semiannually FY 2023 Biobarrier LF/WV or HS VOCsb IR88-MW69UCH Groundwater UCH Semiannually FY 2023 Biobarrier LF/WV or HS VOCsb VIMS Monitoring IR88-BLDG37-SG07 Subslab Soil Gas NA Annual FY 2023 VIMS Monitoring 1 Liter Canisters VOCsc IR88-BLDG37-SG08 Subslab Soil Gas NA Annual FY 2023 VIMS Monitoring 1 Liter Canisters VOCsc IR88-BLDG43-SG06 Subslab Soil Gas NA Annual FY 2023 VIMS Monitoring 1 Liter Canisters VOCsc IR88-BLDG43-SG17 Subslab Soil Gas NA Annual FY 2023 VIMS Monitoring 1 Liter Canisters VOCsc 3 of 3 Attachment 11. FY 2023 Sampling Locations and Methods Site 88 Long-Term Monitoring Report FY 2022 MCB Camp Lejeune North Carolina Sampling Location ID Matrix Aquifer Monitoring Frequency Next Sampling Event Purpose of Sample Sample Method Analytical Group for FY 2023d IR88-SG19 Subslab Soil Gas NA Annual FY 2023 VIMS Monitoring 1 Liter Canisters VOCsc IR88-SG20 Subslab Soil Gas NA Annual FY 2023 VIMS Monitoring 1 Liter Canisters VOCsc Notes: a VOCs include: PCE, TCE, cis-1,2-DCE, VC, benzene, and naphthalene. b VOCs include: PCE, TCE, cis-1,2-DCE, and VC. c VOCs include: PCE, TCE, VC. d NAIPs include geochemical parameters (DO and ORP), chloride, sulfate, nitrate, nitrite, sulfide, TOC, methane, ethane, ethene, alkalinity, and ferrous/ferric iron. Microbial populations include Dehalococcoides sp and functional genes, DCE = dichloroethane DO = dissolved oxygen ERD = enhanced reductive dechlorination FY = fiscal year HS = Hydrasleeve ID = identification ISCO = in situ chemical oxidation LF/WV = low flow/well volume MCB = Marine Corps Base MCH = middle Castle Hayne MNA = monitored natural attenuation NAIP = natural attenuation indicator parameters ORP = oxidation-reduction potential PCE = tetrachloroethene TCE = trichloroethene TOC = total organic carbon UCH = upper Castle Hayne VC = vinyl chloride VOC = volatile organic compound