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HomeMy WebLinkAbout4103_Guilford_WhiteStreet_PhaseII_MSWLF_CDLF_Oct22GW_FID1773328_20230217pENR USE ONLY [:]Paper Report [:]Electronic Data - Email CD (data loaded: Yes / No Doc/Event #: NC DENR I I Environmental Monitoring Division of Waste Management - Solid Waste Reporting Form Notice: This form and any information attached to it are "Public Records" as defined in NC General Statute 132-1. As such, these documents are available for inspection and examination by any person upon request (NC General Statute 132-6). Instructions: Prepare one form for each individually monitored unit. Please type or print legibly. Attach a notification table with values that attain or exceed NC 2L groundwater standards or NC 2B surface water standards. The notification must include a preliminary analysis of the cause and significance of each value. (e.g. naturally occurring, off -site source, pre-existing condition, etc.). Attach a notification table of any groundwater or surface water values that equal or exceed the reporting limits. Attach a notification table of any methane gas values that attain or exceed explosive gas levels. This includes any structures on or nearby the facility (NCAC 13B .1629 (4)(a)(i). Send the original signed and sealed form, any tables, and Electronic Data Deliverable to: Compliance Unit, NCDENR-DWM, Solid Waste Section, 1646 Mail Service Center, Raleigh, NC 27699-1646. Solid Waste Monitoring Data Submittal Information Name of entity submitting data (laboratory, consultant, facility owner): WSP USA Inc. on behalf of the City of Greensboro Contact for questions about data formatting. Include data preparer's name, telephone number and E-mail address: Name: Brian J. Eichlin E-mail: brian.eichlin(a).wsD.com Phone:336-852-4903 NC Landfill Rule: Actual sampling dates (e.g., Facility name: Facility Address: Facility Permit # (.0500 or .1600) October 20-24, 2006) White Street Landfill - Phase II 2503 White Street 41-03 .1600 October 19-21, 2022 Greensboro, NC 27405 Environmental Status: (Check all that apply) ❑ Initial/Background Monitoring ❑ Detection Monitoring ❑X Assessment Monitoring ❑X Corrective Action of data submitted: (Check all that apply) Groundwater monitoring data from monitoring wells Groundwater monitoring data from private water supply wells ❑X Leachate monitoring data 1-1Surface water monitoring data Methane gas monitoring data Corrective action data (specify) MNA Parameters Other(specify) Notification attached? No. No groundwater or surface water standards were exceeded. X Yes, a notification of values exceeding a groundwater or surface water standard is attached. It includes a list of groundwater and surface water monitoring points, dates, analytical values, NC 2L groundwater standard, NC 2B surface water standard or NC Solid Waste GWPS and preliminary analysis of the cause and significance of any concentration. Yes, a notification of values exceeding an explosive methane gas limit is attached. It includes the methane monitoring points, dates, sample values and explosive methane gas limits. Certification To the best of my knowledge, the information reported and statements made on this data submittal and attachments are true and correct. Furthermore, I have attached complete notification of any sampling values meeting or exceeding groundwater standards or explosive gas levels, and a preliminary analysis of the cause and significance of concentrations exceeding groundwater standards. I am aware that there are significant penalties for making any false statement, representation, or certification including the possibility of a fine and imprisonment. Brian J. Eichlin, PE Senior Technical Principal 336-852-4903 Name (Pr' Title (Area Code) Telephone Number -, A / 262 •3 Affix NC Licensed/ Professional Geologist Seal Date WSP USA Inc., 5B Oak Branch Drive, Greensboro, NC 27407 Facility Representative Address F-0165 ••ape` essiO `/'!'9 JQ SEAL^ �C NC PE Firm License Number (if applicable effective May 1, 2009)�(` GIN Revised 6/2009 /� Z • /6 CITY OF GREENSBORO FIELD OPERATIONS DEPARTMENT SECOND SEMI-ANNUAL 2022 WATER QUALITY MONITORING REPORT WHITE STREET LANDFILL - PHASE II, PERMIT NO. 41-03 FEBRUARY 17, 2023 SUBMITTED BY: WSP USA, Inc. 5B Oak Branch Drive Greensboro, NC USA, 27407 DISTRIBUTION LIST Richard Lovett, PG, Environmental Compliance Support Manager, Field Operations, City of Greensboro, 401 Patton Avenue, Greensboro, NC 27406. 336-373-4188. Richard.Lovett@greensboro-nc.gov Michael Szychowic, Landfill Compliance Supervisor, Field Operations, City of Greensboro, 2503 White Street, Greensboro, NC 27405.336-254-8096. Michael.Szychowicz@greensboro-nc.gov Jackie Drummond, Department of Environmental Quality, Division of Waste Management - Solid Waste Section, 2090 US Highway 70, Swannanoa, NC 28778. 828-296-4706. Jaclynne.drummond@ncdenr.gov EXECUTIVE SUMMARY On behalf of the City of Greensboro (City), WSP USA, Inc. (WSP) formerly Golder Associates NC, Inc. (Golder), is submitting the enclosed Water Quality Monitoring Repot, which documents the results of the October 19 - 21, 2022 compliance monitoring event for the Phase II facility at the White Street Landfill. COMPLIANCE MONITORING PROGRAM During the October 2022 event, cobalt was detected at a concentration above the Practical Quantitation Limit (PQL) and NC 2L Standard at downgradient compliance wells II-1 and II-6. In addition, Cobalt was detected at estimated concentrations below the PQL but above the NC 2L Standard in the samples collected from one or more downgradient compliance wells during the event. Per 15A NCAC 02L .0202 (b)(1), "where the standard (i.e., the NC 2L Standard) for a substance is less than the PQL, the detection of that substance at or above the PQL constitutes a violation of the standard." The NC 2L groundwater standard for cobalt is 1 microgram per liter (ug/L) and the PQL is 10 ug/L. Naturally occurring metals, which include barium, cadmium, cobalt, vanadium, and zinc were identified in the October 2006 ASD approved by NC DEQ in November 2007 and the November 2017 addendum. Site -specific groundwater protection standard (SGPSs) for cadmium, cobalt, and nickel have been proposed and submitted along with the First Semi -Annual 2022 Water Quality Monitoring Report White Street Landfill Phase II (WSP Golder, August 19, 2022). The October 2022 cobalt concentration reported for II-1 (37 ug/L) and II-6 (11 ug/L) were less than the SGPS (76 ug/L) proposed for cobalt in the First Semi -Annual 2022 Water Quality Monitoring Report. The cobalt concentrations reported for II-1 and II-6 are consistent with historical concentrations. Therefore, no further action is warranted. vanadium was also detected at a concentration above the PQL and the NC 2L Standard at II-5. This was the first detection of vanadium above the current NC 2L of 7 ug/L at II-5 since April 2017. The turbidity readings for the sample collected from II-5 were elevated compared to recent samples. The elevated turbidity readings indicate that the elevated concentration of vanadium in the October 2022 sample from II-5 maybe associated with suspended solids. Additional purging will be performed during the next sampling event in attempt to lower turbidity prior to sample collection in an effort to collect a representative sample of groundwater conditions. Nickel was detected at a concentration above the NC 2L Standard (100 ug/L) and the PQL at II-8. The detected concentration (130 ug/L) is consistent with historical concentrations and less than the SGPS (170 ug/L) for nickel proposed in the First Semi -Annual 2022 Water Quality Monitoring Report. Therefore, no further action is warranted. During the October 2022 event, 1,4-dichlorobenzene and benzene were detected at concentrations above their respective PQLs and NC 2L groundwater standards at well II-1 and vinyl chloride was detected at a concentration above its associated PQL and groundwater standard at well II-2. The detected constituents and concentrations are generally consistent with historical data. Per the May 29, 2018 memorandum from NC DEQ, 1,4-dioxane, was analyzed for surface water and groundwater samples, in addition to permit -required constituents. During the October 2022 sampling event, 1,4-dioxane was detected above the PQL and NC 2L Standard in samples collected from compliance monitoring wells II-1, II-4A, II-5, II-6, II-7, II-8, and II-12. Surface water samples collected during the October 2022 event revealed no detections of NC Appendix I constituents above their respective applicable surface water standards. wsp.com CORRECTIVE ACTION MONITORING PROGRAM A Corrective Action Evaluation Report (CAER) was submitted to NC DEQ for the Phase II landfill on November 29, 2022. The CAER summarized the MNA and phytoremediation remedy results for the previous five-year period (April 2017 through April 2022) and requested to remove tetrachloroethene (PCE), trichloroethene (TCE), and ill-dichloroethane (1,1-DCA) from the constituent of concern list. NC DEQ approved the request in a letter dated December 12, 2022 with the condition that 1,4-dioxane be added to the constituent of concern list and inclusion of one additional (new) surface water sampling location to be sampled semi-annually beginning with the Spring 2023 monitoring event. In an email dated December 16, 2022, WSP, on -behalf of the City, proposed a location for the new surface water monitoring point (SW-6). The location of SW-6 was approved by NC DEQ in an email dated December 19, 2022. During the October 2022 event, cobalt was detected at estimated concentrations below the PQL but above the NC 2L Standard in samples collected from sentinel monitoring wells II-9, SMW-1 and SMW-3 at concentrations less than the SGPS (76 ug/L) proposed in the First Semi -Annual 2022 Water Quality Monitoring Report. No further action is warranted for the cobalt detections. Vinyl chloride was detected at a quantifiable concentration above the NC 2L groundwater standard in the sample collected from sentinel monitoring well SMW-3. The reported detection is consistent with historical concentrations. No other NC Appendix I VOCs were detected at concentrations above the groundwater standards during this event in samples from sentinel wells. The constituent 1,4-dioxane was detected at concentrations above the PQL and NC 2L Standard in samples collected from sentinel wells II-9 and SMW-4 during the October 2022 event. As stated above, per the December 12, 2022 letter from NC DEQ, 1,4-dioxane has been added to the constituent of concern list and sampling for this constituent will continue. Based on these results, the City of Greensboro will continue groundwater monitoring at the Phase II landfill in accordance with the requirements of the Assessment Monitoring and Corrective Action Programs, as outlined in Title 15A NCAC 13B .1635 and .1637. Also, based on the results, the City of Greensboro will continue the implementation of groundwater corrective action in accordance with the approved Corrective Action Plan. Surface water sampling point SW-6 has been approved by NC DEQ and will be sampled during the next sampling event currently scheduled for April 2023. 1,4-Dioxane was added to the constituent of concern list and sampling for this constituent will continue. Page 2 SIGNATURES PREPARED BY c4LZ 14�� Andrew Wrenn Consultant/Environmental Scientist REVIEWED BY Brian J Eichlin, PE, RSM Senior Technical Principal Second Semi -Annual Water Quality Monitoring Report - White Street Landfill -Phase II Project No. GL19131339 City of Greensboro WSP Page iii TABLE OF CONTENTS 1 INTRODUCTION...................................................................1 1.1 Site Description and Background...............................................1 1.2 Compliance Monitoring History..................................................1 1.3 Hydrogeologic Setting .....................................................................3 2 FIELD PROGRAM, MONITORING RESULTS, AND DISSCUSSION......................................................................4 2.1 Visual Inspection Program............................................................4 2.2 Well Network and Groundwater Elevation Measurements.................................................................................... 4 2.3 October 2022 Monitoring Event.................................................4 2.4 Laboratory Analysis Program......................................................5 3 LABORATORY AND FIELD QA/QC ..............................6 4 DATA EVALUATION..........................................................7 4.1 North Carolina Groundwater and Surface Water Quality StandardComparisons....................................................................7 4.1.1 Compliance Monitoring...............................................................................................................7 4.1.2 Corrective Action Monitoring...................................................................................................8 Second Semi -Annual Water Quality Monitoring Report - White Street Landfill -Phase II Project No. GL19131339 City of Greensboro WSP Page v 5 CORRECTIVE ACTION PERFORMANCE MONITORING....................................................................... 9 6 CONCLUSIONS...................................................................11 7 REFERENCES.....................................................................12 TABLES...............................................................................................13 FIGURES.............................................................................................14 WSP Second Semi -Annual 2022 Water Quality Monitoring Report- White Street Landfill - Phase II Project No. GL19131339 Page A City of Greensboro TABLES TABLE 1 SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA TABLE 2 SUMMARY OF ESTIMATED HORIZONTAL FLOW VELOCITIES TABLE 3 SUMMARY OF WELL CONSTRUCTION INFORMATION TABLE 4 SUMMARY OF GROUNDWATER MONITORING RESULTS, DETECTED CONSTITUENTS TABLE 5 SUMMARY OF GROUNDWATER FIELD PARAMETERS TABLE 6 SUMMARY OF SURFACE WATER MONITORING RESULTS, DETECTED CONSTITUENTS TABLE 7 SUMMARY OF SURFACE WATER FIELD PARAMETERS FIGURES FIGURE 1: GROUNDWATER SURFACE CONTOUR MAP, OCTOBER 2022 FIGURE 2: SURFACE WATER LOCATION MAP APPENDICES A NC DEQ CORRESPONDENCE B GROUNDWATER AND SURFACE WATER SAMPLING LOGS C OCTOBER 2022 CERTIFICATE -OF -ANALYSIS, CHAIN -OF -CUSTODY FORMS, AND LABORATORY DATA REVIEWS D EPA NATURAL ATTENUATION SCREENING PROTOCOL FORMS AND BIOCHLOR MONITORED NATURAL ATTENUATION ANALYSIS FOR OCTOBER 2022 SAMPLING EVENT Second Semi -Annual Water Quality Monitoring Report -White Street Landfill -Phase II WSP Project No. GL19131339 City of Greensboro Page vii I INTRODUCTION This report summarizes the monitoring results from the October 19 - 21, 2022, groundwater and surface water sampling event at Phase II of the White Street Landfill in Greensboro, North Carolina (NC). The active unlined construction and demolition debris (C&D) over municipal solid waste (MSW) facility is monitored in accordance with Title 15A NCAC 13B .1635 and .1637. The facility is in central Guilford County and is comprised of a closed, unlined MSW facility (Phase I), an active unlined C&D over MSW facility (Phase II), an active Subtitle D MSW facility (Phase II), and an active Type I compost facility. Phase II is currently in Assessment Monitoring and Corrective Action for several detected volatile organic constituents (VOCs) that exceed their respective groundwater standards. The facility is owned and operated by the City of Greensboro under Permit Nos. 41-03 and 41-12 issued by the NC Department of Environmental Quality (NC DEQ, formerly NC Department of Environment and Natural Resources). The northeastern portion of the landfill property is comprised of the Phase I and Phase II landfills, which are covered under Permit No. 41-03. The southwestern portion of the facility is comprised of the Phase III landfill, which is covered under permit No. 41-12. The water quality monitoring results for the Phase I and Phase III facilities are submitted under separate cover. 1.1 SITE DESCRIPTION AND BACKGROUND The location of the facility is shown on the inlay on Figure 1. The White Street Landfill is located approximately 5 miles northeast of downtown Greensboro, NC in Guilford County. Access to the site is from Cone Boulevard, which turns into Ralph Johnson Way and ends at White Street with the landfill entrance to the east of this intersection. Part of the James River watershed, North Buffalo Creek flows from southwest to northeast along the northwestern border of the facility and then flows eastward, away from the facility near the northeastern end of the property. The location of this surface water feature and its associated tributaries are shown on the inlay on Figure 1. Based on the topography as shown on Figure 1, topographic surface elevations at the facility range from approximately 700 feet above mean sea level (AMSL) to nearly 850 feet AMSL. The site is surrounded by wooded and agricultural properties to the northwest, residential properties to the south and southwest, and residential and wooded properties to the east. The Phase II landfill is located east of the closed Phase II landfill and northeast of the active Phase III landfill. The property also includes an active Type I compost facility located to the east of the Phase I landfill and south of the Phase II landfill. 1.2 COMPLIANCE MONITORING HISTORY The original monitoring network consisted of one upgradient well (MW-13) and five downgradient wells (II-1, II-2, II-3, II-4, and II-5). An additional upgradient monitoring well (MW-14) and three additional downgradient wells (II-6, II-7, and II-8) were installed in 1995. Assessment monitoring at the Phase II facility was initiated in 1997 due to groundwater exceedances of the NC Appendix I constituents. The C&D waste unit began accepting waste over top of the closed Phase II MSW unit in 1998. Well II-713 was installed in December 2000. Four monitoring wells (II-9, II-10, II-11, and II-12) were installed in March 2005 as part of the Nature and Extent Study (NES). Well II-12 became part of the compliance network in April 2010. In October 2006, the City submitted an Alternate Source Demonstration (ASD) to address above -standard NC Appendix I inorganic compounds detected in groundwater samples from the Phase II area. The ASD presented data to support that concentrations of barium, cadmium, cobalt, vanadium, and zinc detected at site monitoring wells are naturally occurring; the ASD was approved by NC DEQ by letter on November 15, 2007. In response to a letter from the NC DEQ dated July 24, 2017, an addendum to the ASD was submitted on November 20, 2017. Site -specific groundwater protection standards Second Semi -Annual Water Quality Monitoring Report - White Street Landfill -Phase II WSP Project No. GL19131339 City of Greensboro Page 1 (SGPSs) for cadmium, cobalt, and nickel have been proposed and submitted along with the First Semi -Annual 2022 Water Quality Monitoring Report White Street Landfill Phase II (WSP Golder, August 19, 2022). The Phase II facility is currently in corrective action due to above -standard concentrations of VOCs in groundwater. The Corrective Action Plan (CAP) was approved by the NC DEQ on June 24, 2008, which proposed phytoremediation and monitored natural attenuation (MNA) as the remedial strategy. Three sentinel monitoring wells (SMW-1, SMW-3, and SMW-4) were installed in June 2010 and the EBuffer® hybrid poplar trees were installed between March and November 2010. Well II-9 also serves as a sentinel well for the corrective action monitoring program. Monitoring well II-3B was installed in June 2011 to monitor groundwater quality downgradient of II-3, which has been impacted due to its close proximity to waste. The Phase II landfill's compliance monitoring network is currently comprised of twelve monitoring wells, which monitor the uppermost aquifer beneath the facility. Monitoring wells MW-13 and MW-14 are the upgradient wells for the Phase II landfill, with MW-13 being shared upgradient with the Phase II landfill. Wells II-1, II-2, II-3, II-4A, II-5, II-6, II-7, II-7B, II-8, and II-12 are downgradient compliance wells for the Phase II landfill. Well II-3B is sampled to monitor water quality downgradient of II-3. Groundwater samples are analyzed for the NC Appendix I list of constituents plus NC Appendix II `detects' during the first semi-annual water quality monitoring event of each year and are analyzed for the NC Appendix II list of constituents during the second semi-annual water quality monitoring event of each year. Currently, there are not additional `detects' to be analyzed during the first semi-annual water quality monitoring event of each year. The corrective action monitoring activities include semi-annual monitoring of the four sentinel wells (II-9, SMW-1, SMW-3, and SWM-4). Three compliance monitoring wells (II-1, II-7, and II-7B) also serve as sentinel wells for the corrective action program. Groundwater samples from the sentinel wells are analyzed for the same parameters as the compliance monitoring wells. MNA parameters are collected semi-annually from upgradient well MW-13 and sentinel wells II-1, II-9, and SMW-3. The MNA parameters include chloride, nitrate, sulfate, sulfide, ethene, ethane, methane, total organic carbon, (TOC), alkalinity, and volatile fatty acids (VFAs). A Corrective Action Performance Evaluation Report (CAPER) is to be prepared and submitted to the NC DEQ every five years to evaluate MNA and the phytoremediation at the Phase II landfill. A Corrective Action Evaluation Report (CAER) was submitted on November 29, 2022. The facility's monitoring network also includes five surface water sampling points, SW-1, SW-2, SW-3, SW-4, and SW-5. Surface water point SW-1 is the facility's upstream sampling point located along North Buffalo Creek, west of the facility, along Summit Avenue. Surface water point SW-2 is collected from a tributary to North Buffalo Creek that flows from south to north into the stream, just west and upstream of the facility. Surface water point SW-3 is located west of the facility, downstream of SW-1 and upstream of the confluence of North Buffalo Creek and the tributary from which SW-2 is sampled. Surface water points SW-4 and SW-5 are both located downstream of SW-1, SW-2, and SW-3 along North Buffalo Creek. Surface water point SW-5 is located within the facility's property, at the northern end of the Phase II landfill and SW-5 is located to the east of the facility, off Rankin Mill Road. Surface water points SW-1, SW-2, SW-3, and SW-4 are sampled in conjunction with the groundwater monitoring wells in accordance with the facility's permits and Water Quality Monitoring Plan for the Phase I, Phase II, and Phase III landfills. Surface water point SW-5 is sampled in accordance with the permit 41-03, which includes the Phase I and Phase II landfills, but excludes the Phase III landfill. The CAER submitted to NC DEQ on November 29, 2022 requested to continue to implement MNA and Phytoremediation for the corrective action of volatile organic compounds and to remove tetrachloroethene (PCE), trichloroethene (TCE), and 1,1-dichloroethan (1,1-DCA) from the constituent of concern list. NC DEQ approved these requests in a letter dated December 12, 2022 with the condition that 1,4-dioxane be added to the constituent of concern list and inclusion of one additional new surface water sampling location to be sampled semi-annually beginning with the Spring 2023 monitoring event. In an email dated December 16, 2022, WSP, on -behalf of the City, proposed a location for the new surface water monitoring point (SW-6). The location of SW-6 was approved by NC DEQ in an email dated December 19, 2022. A copy of the December 12, 2022 letter from NC DEQ is included in Appendix A along with a figure showing the locations of surface water sampling point SW-6. WSP Second Semi -Annual 2022 Water Quality Monitoring Report- White Street Landfill - Phase II Project No. GL19131339 Page 2 City of Greensboro 1.3 HYDROGEOLOGIC SETTING The White Street Landfill is located within the Carolina Slate Belt of the Piedmont Physiographic Province of NC (NCGS, 1985). Generally, the Carolina Slate Belt consists of Late Proterozoic to Cambrian volcanic and greenschist-facies, metasedimentary rocks intruded by plutonic suites (Butler and Secor,1991). The site geology is characterized by a regional -scale felsic intrusive complex, which consists mainly of white to gray, fine- to coarse -grained, massive to foliated metamorphosed granitic rock. The region is characterized by regional and small-scale Mesozoic diabase dikes. The uppermost groundwater beneath the facility is present in a shallow, unconfined aquifer comprised of saprolite and partially weathered rock (PWR). Groundwater occurs at depths of approximately 1 to 30 feet below ground surface. Depth to water measurements, obtained on October 19, 2022, are summarized in Table 1 and were used to prepare a groundwater surface contour map presented on Figure 1. As presented, the groundwater flow in the uppermost aquifer beneath the site is generally to the northwest toward Buffalo Creek, which is located along the northwestern property boundary of the site. The groundwater surface contour map and interpreted flow directions are generally consistent with previously submitted groundwater contour maps and flow directions for this facility. Based on the October 19, 2022 groundwater surface contour map, the hydraulic gradient in the shallow aquifer underlying the site, as measured along the conceptual flow paths shown on the contour map, was calculated to be approximately 0.03 feet/foot. Groundwater velocities were calculated using a hydraulic conductivity of 2.61 X 10-4 centimeters per second (cm/s), which is the average of the hydraulic gradient conductivities calculated for the hydrogeologic units present at the facility's Phase II and Phase III landfills. This average is based on slug test data by BPA Environmental & Engineering Inc. (Phase II) and G.N. Richardson & Associates (Phase III). The estimated effective porosity of the shallow aquifer is expected to range from 0.20 (saprolite) to 0.09 (fractured rock). The effective porosity of saprolite was used in calculations to provide a conservative estimate of groundwater flow. Using the above values, the estimated rate of groundwater flow for the uppermost aquifer beneath the facility was calculated using the following modified Darcy equation: Vim,,, = Ki/ne where Vg = average linear velocity (feet/year), K = hydraulic conductivity (feet/year), i = horizontal hydraulic gradient, and ne = effective porosity. The average estimated linear groundwater flow velocity under the waste management unit is approximately 342 feet/year to the northwest, which is generally consistent with previous estimates (Table 2). The linear velocity equation above makes the simplified assumptions of a homogeneous and isotropic aquifer. Therefore, this equation represents a likely average value for the uppermost aquifer and does not account for heterogeneous and/or anisotropic conditions that may be present in the uppermost aquifer at the facility. Second Semi -Annual Water Quality Monitoring Report - White Street Landfill -Phase II Project No. GL19131339 City of Greensboro WSP Page 3 2 FIELD PROGRAM, MONITORING RESULTS, AND DISSCUSSION Field activities conducted as part of the October 2022 sampling events are discussed in the following sections. 2.1 VISUAL INSPECTION PRuGRAM In order to detect a potential release at the earliest possible time, the visual inspection program is used at the Phase II landfill by the sampling personnel. This program includes physical indicators such as potential water table mounding beneath the waste management unit, physical examination of any stresses in biological communities, visible signs of leachate migration (i.e., leachate seeps), and unexplained changes in soil characteristics, and any other change to the environment due to the waste management unit. During this compliance monitoring event, no physical indicators of a potential release were observed in the vicinity of the waste management areas by the sampling personnel. 2.2 WELL NETWORK AND GROUNDWATER ELEVATION MEASUREMENTS The current compliance network of groundwater monitoring wells at the Phase II landfill consists of two upgradient background wells (MW-13 and MW-14), 10 downgradient compliance wells (II-1, II-2, II-3, II-4A, II-5, II-6, II-7, II-7B, II-8, and II-12), one assessment well (II-3B), and four sentinel wells (II-9, SMW-1, SMW-3, and SMW-4). Available monitoring well construction information for all site monitoring wells is summarized on Table 3, and the well locations are shown on Figure 1. The well locations were selected to yield groundwater samples representative of the conditions in the uppermost aquifer underlying the facility, and to monitor for potential releases from the landfill unit. Three upstream surface water monitoring points (SW-1, SW-2, and SW-3) and two downstream surface water monitoring points (SW-4 and SW-5) are also monitored. As described in Section 1.2, beginning with the Spring 2023 semi-annual monitoring event a new surface monitoring location (SW-6) will be added to the monitoring program. Depth -to -water measurements are recorded to the nearest 0.01 foot prior to initiating groundwater purging and sampling activities. The respective groundwater level elevations for this event are presented in Table 1. The historical water level data are also shown on this table. As presented, recent groundwater elevation data for the monitoring well network indicate that the hydraulic head level in the uppermost aquifer beneath the facility is fairly consistent, with temporal variation from the long-term average limited to approximately 5 — 25 feet (plus or minus) under normal conditions. The range in fluctuation appears to be greatest in the upgradient background wells, which are located in a groundwater recharge area. The range in fluctuation in the downgradient compliance wells, which are located near groundwater discharge areas, is less, presumably due to the stabilizing effect of the hydraulic discharge boundary. 2.3 OCTOBER 2022 MONITORING EVENT Personnel from WSP visited the facility from October 19 — 21, 2022, to purge and sample monitoring wells and to sample surface water monitoring points. Monitoring wells were purged and sampled using the dedicated pumps at the facility following low -flow micro -purge procedures. Measurements of temperature, pH, specific conductivity, turbidity, dissolved oxygen, and oxidation reduction potential were recorded on approximately 3 to 5-minute intervals, depending on the purge rate. In general, the purge rate for each well was matched to the yield of the monitoring well, as determined by continuously monitoring the depth to the water, up to a maximum purge rate of approximately 200 milliliters per minute. Purging was continued until stabilization was indicated by the water quality parameters. WSP Second Semi -Annual 2022 Water Quality Monitoring Report- White Street Landfill - Phase II Project No. GL19131339 Page 4 City of Greensboro Prior to sampling, the laboratory -supplied sample containers were prepared. Each sample container was labeled with the sample identification number, sampling personnel, date and time of sample collection, project name and number, and requested chemical analyses. The required groundwater samples were collected directly from the dedicated bladder pump's discharge lines into the labeled, laboratory -supplied, pre -preserved sample containers after well stabilization was completed based on the monitored water quality parameters. After collection, the samples were placed in a cooler on ice, under chain -of -custody control. Copies of the sampling logs are presented in Appendix B. Included in each log is a description of the sampling equipment, sampling method and location, field observations, and water quality measurements. The surface water samples were collected directly from the stream, by lowering the sample containers into the stream flow with the opening facing downstream from the current flow, taking care to prevent the overflow of the sample containers and to minimize sample -induced turbidity. Measurements of temperature, pH, specific conductivity, turbidity, dissolved oxygen, and oxygen reduction potential were measured directly from the stream and recorded during the collection of the surface water samples. After collection, the surface water samples were placed in a cooler on ice, under chain -of -custody control. Copies of the sampling logs are presented in Appendix B. Included in each log is a description of the sampling equipment, sampling location, sampling method, field observations, and water quality measurements. 2.4 LABORATORY ANALYSIS PROGRAM The October 2022 groundwater and surface water samples were submitted to Environmental Conservation Laboratories, Inc. (ENCO) of Cary, NC, which was recently acquired by Eurofins Scientific, under chain -of -custody control for analysis. Surface water samples were analyzed for NC Appendix I list of constituents. Groundwater samples were analyzed for the NC Appendix II list of constituents plus tetrahydrofuran. Sentinel wells II-1, II-9, and SWMU-3, and upgradient well MW-14 were also analyzed for approved MNA parameters. Surface water and groundwater samples were also analyzed for 1,4-dioxane per the May 29, 2018, memorandum from the NC DEQ. The samples were received at the laboratory in good condition and were properly preserved. Second Semi -Annual Water Quality Monitoring Report - White Street Landfill -Phase II Project No. GL19131339 City of Greensboro WSP Page 5 3 LABORATORY AND FIELD QA/QC A duplicate sample was collected at Phase II monitoring well II-7B by WSP personnel as part of the October 2022 sampling event for laboratory QA/QC. ENCO/Eurofins analyzed the duplicate sample for the NC Appendix II list of constituents. The constituents detected in the duplicate sample were consistent with those detected in the sample collected from monitoring well II-7B. The results do not identify any regularities related to laboratory analyses. A laboratory -prepared trip blank accompanied the volatile sample containers to and from the laboratory. ENCO analyzed the trip blank for NC Appendix II VOCs. A field blank was collected for the Phase III landfill and was compared to the surface water samples, which are shared between the Phase I, Phase II, and Phase III landfills. A trip blank (Trip Blank) associated with the surface water samples was also collected and analyzed for NC Appendix I VOCs and 1,4-dioxane. Reviews of the laboratory data were performed by WSP personnel and are included in Appendix C. Based on WSP's review of the data, no qualification was required. Nickel and zinc were detected in the laboratory method detection blank (680-747010) associated with primary samples from well MW-13 and surface water sample SW-5. Based on this detection, the detection of zinc in surface water sample SW-5 has been blank qualified. Nickel was not detected in the primary samples and therefore, no data qualification was required as a result of the detection. No irregularities were identified during the review of the analytical reports for the other samples (i.e., wells and surface waters). Analytical results for the field blank collected from the Phase III landfill revealed no detections of RCRA metals or NC Appendix I constituents. There were not detections of NC Appendix I constituents in the trip blank (Trip Blank II) associated with these samples. The laboratory did not initially analyze for mercury at wells MW-13 and MW-14. This omission was noted by WSP during the data review process. As mercury has not previously been detected at wells MW-13 and MW-14, WSP requested that the laboratory analyze the samples out of hold. Results of the mercury analysis for MW-13 and MW-14 for the October 2022 out of hold samples were also non -detect. The omission of mercury and analysis of the samples out of hold was discussed with the NC DEQ project manager to confirm that this was acceptable and to confirm that resampling is not necessary. NC DEQ agreed with this process in an email dated February 6, 2023 and did not request additional sampling. A copy of the email from NC DEQ is included in Appendix A. The laboratory did not initially analyze for chloride at well II-9. This omission was noted by WSP during the data review process and the laboratory was asked to run the sample out of hold. The result of the chloride analysis for II-9 for the October 2022 out of hold samples were similar to historical concentrations and continue to be below the NC 2L Standard. Sulfide was analyzed out of hold by the laboratory for MW-13. The sample was collected on October 18 and was received by ENCO on October 20. The sample was then sent to the Eurofins laboratory in Savannah but was not received until October 25. The hold time for sulfide is 7-days. Sulfide (1,300 ug/L) was detected in the sample collected from well MW-13 but has historically been non -detect at this location. There is no established groundwater standard for sulfide and the reported detection should be considered suspect. Since sulfide is not a compliance parameter of concern no additional action is required at this time. WSP Second Semi -Annual 2022 Water Quality Monitoring Report- White Street Landfill - Phase II Project No. GL19131339 Page 6 City of Greensboro 4 DATA EVALUATION Analytical results and field parameters for the October 2022 groundwater samples are summarized in Table 4 and Table 5 with available historical data. Analytical results and field parameters for the October 2022 surface water samples are summarized in Table 6 and Table 7 with available historical data. The laboratory certificate -of -analysis, chain -of -custody form, and laboratory data reviews for the sampling event are included in Appendix C. The results of the data evaluations are presented in the following sections. 4.1 NORTH CAROLINA GROUNDWATER AND SURFACE WATER QUALITY STANDARD COMPARISONS Compliance monitoring analytical results for the October 2022 groundwater and surface water samples are compared to applicable water quality standards below in Section 4.1.1. 4.1.1 COMPLIANCEMONITORING During the October 2022 event, cobalt was detected at a concentration above the Practical Quantitation Limit (PQL) and NC 2L Standard at downgradient compliance wells II-1 and II-6. In addition, cobalt was detected at estimated concentrations below the PQL but above the NC 2L Standard in the samples collected from one or more downgradient compliance wells during the event. Per 15A NCAC 02L .0202 (b)(1), "where the standard (i.e., the NC 2L Standard) for a substance is less than the PQL, the detection of that substance at or above the PQL constitutes a violation of the standard." The NC 2L groundwater standard for cobalt is 1 microgram per liter (ug/L) and the PQL is 10 ug/L. Naturally occurring metals, which include barium, cadmium, cobalt, vanadium, and zinc were identified in the October 2006 ASD approved by NC DEQ in November 2007 and the November 2017 addendum. Site -specific groundwater protection standard (SGPSs) for cadmium, cobalt, and nickel have been proposed and submitted along with the First Semi -Annual 2022 Water Quality Monitoring Report White Street Landfill Phase II (WSP Golder, August 19, 2022). The October 2022 cobalt concentration reported for II-1 (37 ug/L) and II-6 (11 ug/L) were less than the SGPS (76 ug/L) proposed for cobalt in the First Semi -Annual 2022 Water Quality Monitoring Report. The cobalt concentrations reported for II-1 and II-6 are consistent with historical concentrations. Therefore, no further action is warranted. Vanadium was also detected at a concentration above the PQL and the NC 2L Standard at II-5. This was the first detection of vanadium above the current NC 2L of 7 ug/L at II-5 since April 2017. The turbidity readings for the sample collected from II-5 were elevated compared to recent samples. The elevated turbidity readings indicate that the elevated concentration of vanadium in the October 2022 sample from II-5 maybe associated with suspended solids. Additional purging will be performed during the next sampling event in attempt to lower turbidity prior to sample collection in an effort to collect a representative sample of groundwater conditions. Nickel was detected at a concentration above the NC 2L Standard (100 ug/L) and the PQL at II-8. The detected concentration (130 ug/L) is consistent with historical concentrations and less than the SGPS (170 ug/L) for nickel proposed in the First Semi -Annual 2022 Water Quality Monitoring Report. Therefore, no further action is warranted. During the October 2022 event, 1,4-dichlorobenzene and benzene were detected at concentrations above their respective PQLs and NC 2L groundwater standards at well II-1 and vinyl chloride was detected at a concentration above its associated PQL and groundwater standard at well II-2. The detected constituents and concentrations are generally consistent with historical data. Per the May 29, 2018 memorandum from NC DEQ, 1,4-dioxane, was analyzed for surface water and groundwater samples, in addition to permit -required constituents. During the October 2022 sampling event, 1,4-dioxane was detected above the PQL and NC 2L Standard in samples collected from compliance monitoring wells II-1, II-4A, II-5, II-6, II-7, II-8, and II-12. Second Semi -Annual Water Quality Monitoring Report- White Street Landfill - Phase II WSP Project No. GL19131339 City of Greensboro Page 7 Surface water samples collected during the October 2022 event revealed no detections of NC Appendix I constituents above their respective applicable surface water standards. 4. L2 CORRECT/VEACT/ON MON/TOR/NC A Corrective Action Evaluation Report (CAER) was submitted to NC DEQ for the Phase II landfill on November 29, 2022. The CAER summarized the MNA and phytoremediation remedy results for the previous five-year period (April 2017 through April 2022) and requested to remove tetrachloroethene (PCE), trichloroethene (TCE), and 1,1-dichloroethane (1,1-DCA) from the constituent of concern list. NC DEQ approved the request in a letter dated December 12, 2022 with the condition that 1,4-dioxane be added to the constituent of concern list and inclusion of one additional (new) surface water sampling location to be sampled semi-annually beginning with the Spring 2023 monitoring event. In an email dated December 16, 2022, WSP, on -behalf of the City, proposed a location for the new surface water monitoring point (SW-6). The location of SW-6 was approved by NC DEQ in an email dated December 19, 2022. During the October 2022 event, cobalt was detected at estimated concentrations below the PQL but above the NC 2L Standard in samples collected from sentinel wells II-9, SMW-1 and SMW-3 at concentrations less than the SGPS (76 ug/L) proposed in the First Semi -Annual 2022 Water Quality Monitoring Report. No further action is warranted for the cobalt detections. Vinyl chloride was detected at a quantifiable concentration above the NC 2L groundwater standard in the sample collected from sentinel monitoring well SMW-3. The reported detection is consistent with historical concentrations. No other NC Appendix I VOCs were detected at concentrations above the groundwater standards during this event in samples from sentinel wells. The constituent 1,4-dioxane was detected at concentrations above the PQL and NC 2L Standard in samples collected from sentinel wells II-9 and SMW-4 during the October 2022 event. Per the December 12, 2022 letter from NC DEQ,1,4-dioxane has been added to the constituent of concern list and sampling for this constituent will continue. WSP Second Semi -Annual 2022 Water Quality Monitoring Report- White Street Landfill - Phase II Project No. GL19131339 Page 8 City of Greensboro 5 CORRECTIVE ACTION PERFORMANCE MONITORING As discussed in Section 1.2, a Corrective Action Evaluation Report (CAER), was submitted to NC DEQ on November 29, 2022 and was subsequently approved on December 12, 2022. The CAER summarized the MNA and phytoremediation remedy results for the previous five-year period (April 2017 through April 2022). Analysis of geochemical or indicator parameters (including chloride, dissolved oxygen, ethane, ethene, methane, nitrate, oxygen reduction potential, total alkalinity, total organic carbon, sulfate, sulfide, and volatile fatty acids) was performed on samples from the "performance monitoring" of MNA monitoring wells. Chloride sample for II-9 was misplaced by the laboratory and the results for April 2022 monitoring event were used for the screening protocol. To assess the possibility that chlorinated (aromatic and aliphatic) VOCs are naturally attenuating at the site, geochemical parameters have been evaluated based on criteria presented in the Technical Protocols for Evaluating Natural Attenuation and Chlorinated Solvents in Groundwater, Table 2.3 (EPA,1998). The United State (US) Environmental Protection Agency (EPA) screening results are summarized in Appendix D of this report. The screening results present the scoring criteria in the Protocol, as calculated for the downgradient / sentinel monitoring wells II-1, II-9, and SMW-3 for the October 2022 event. Based on the EPA's screening protocol, monitoring well II-1 received a score of 16 and SW-3 a score of 15 which indicate adequate evidence for anaerobic biodegradation of chlorinated organics (EPA, 1999). Monitoring well II-9 received a score of 11 which indicated limited evidence for anaerobic biodegradation of chlorinated organics. The natural attenuation screening protocol forms are included as Figures D-1, D-2, and D-3 in Appendix D. Based on the results of the screening protocol, there is evidence that natural attenuation is occurring at the site; therefore, modeling was performed on the October 2022 data to simulate remediation by natural attenuation using a screening model called BIOCHLOR (EPA, 2000). The flow paths between II-2 and SWM-1, II-3 and II-3B, and II-9 and SMW-3, were selected for modeling due to the alignment of monitoring wells with groundwater flow downgradient of the Phase II waste unit, essentially following the contaminant plume. The models assume that waste was first placed in the Phase II Landfill in 1995. The BIOCHLOR modeling program generates plots that compare concentrations of select chlorinated ethenes over time with no degradation, to concentrations where sequential 1st order biological attenuation is occurring. Each data input page and the associated constituent plots are provided as Appendix D. Figures D-4 and D-5 in Appendix D show the BIOCHLOR modeling results of flow path II-2 and SMW-1 for October 2022. Tetrachloroethene and trichloroethene were not detected in the samples from wells II-2 and SWM-1. Vinyl chloride, the only chlorinated VOC reported above the NC 2L standards during the October 2022 monitoring event, was present at II-2 but was not detected at downgradient sentinel well SMW-1. The concentrations of dichloroethene and vinyl chloride for II-2 plot below the line of first order decay. Ethene was not analyzed for the samples from II-2 and SMW-1 during the event. The results from these plots, coupled with historical trends for chlorinated VOCs, indicate that natural attenuation is occurring at the site and that as long as conditions at the site continue to be strongly anaerobic, biodegradation will likely continue. Figures D-6 and D-7 in Appendix D show the BIOCHLOR modeling results of flow path II-3 and II-3B for October 2022. Tetrachloroethene, trichloroethene, dichloroethene, and vinyl chloride were not detected in samples from either well during the event. Ethene was not analyzed for samples from II-3 and II-3B during the event. Figures D-8 and D-9 in Appendix D show the BIOCHLOR modeling results of flow path II-9 and SMW-3 for October 2022. Tetrachloroethene, trichloroethene, and ethene were not detected in samples from wells II-9 and SMW-3. Vinyl chloride, the only chlorinated VOC reported above the NC 2L standards during the October 2022 monitoring event, was present at SWM-3 but was not detected at II-9. The dichloroethene at II-9 was not plotted as the concentration was too low while the dichloroethene concentration for SMW-3 plotted just above the line for first order of decay. The vinyl chloride concentration for SMW-3 plots below the line for first order decay. The results from these plots indicate that natural Second Semi -Annual Water Quality Monitoring Report- White Street Landfill - Phase II WSP Project No. GL19131339 City of Greensboro Page 9 attenuation is occurring at the site and that as long as conditions at the site continue to be strongly anaerobic, biodegradation will likely continue. According to the current data, it is likely that the plume size is relatively stable, as indicated by the BIOCHLOR model. The cis-1,2-dichloroethene variety is the prominent form of dichloroethene indicating that the detections represent daughter products of trichloroethene. Similarly, the presence of vinyl chloride is likely attributed to the breakdown of dichloroethene compounds. In summary, the results of the BIOCHLOR modeling conducted for October 20212 at the facility indicate that biodegradation is occurring downgradient of the Phase II waste unit. WSP Second Semi -Annual 2022 Water Quality Monitoring Report- White Street Landfill - Phase II Project No. GL19131339 Page 10 City of Greensboro 6 CONCLUSIONS Based on these results, the City of Greensboro will continue groundwater monitoring at the Phase II landfill in accordance with the requirements of the Assessment Monitoring and Corrective Action Programs, as outlined in Title 15A NCAC 13B .1635 and .1637. Also, based on the results, the City of Greensboro will continue the implementation of groundwater corrective action in accordance with the approved Corrective Action Plan. A Corrective Action Evaluation Report (CAER) was submitted to NC DEQ on November 29, 2022. The CAER summarized the MNA and phytoremediation remedy results for the previous five-year period (April 2017 through April 2022) and requested to remove tetrachloroethene (PCE), trichloroethene (TCE), and 1,1-dichloroethan (1,1-DCA) from the constituent of concern list. NC DEQ approved the requests in a letter dated December 12, 2022 with the condition that 1,4-dioxane be added to the constituent of concern list and inclusion of one additional new surface water sampling location to be sampled semi- annually beginning with the Spring 2023 monitoring event. Surface water sampling point SW-6 has been approved by NC DEQ and will be sampled during the next sampling event currently scheduled for April 2023. 1,4-Dioxane was added to the constituent of concern list and sampling for this constituent will continue. Second Semi -Annual Water Quality Monitoring Report - White Street Landfill -Phase II Project No. GL19131339 City of Greensboro WSP Page 11 7 REFERENCES Butler, J. Robert and Secor, Donald T., Jr., 1991, The Central Piedmont, in Horton, J. W., Jr., and Zullo, V.A., eds., The Geology of the Carolinas: The University of Tennessee Press, p. 59 78. NCGS (North Carolina Geologic Survey),1985, Geologic Map of North Carolina. S&ME, Greensboro, NC, January 2017, White Street Landfill - Phase I, Permit No. 41-03, Post -Closure Monitoring, September 2016. WSP Second Semi -Annual 2022 Water Quality Monitoring Report- White Street Landfill - Phase II Project No. GL19131339 Page 12 City of Greensboro TABLES Second Semi -Annual Water Quality Monitoring Report - White Street Landfill -Phase II Project No. GL19131339 City of Greensboro WSP Page 13 February 2023 19131339.106 TABLE 1 Summary of Historical Groundwater Elevation Data White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Well I Ds M W-13 M W-14 I I-1 I I-2 II-3 II-313 II-4 II-4A I I-5 II-6 I I-7 II-713 II-8 I I-9 I I-10 II-11 II-12 SM W-1 SM W-3 SM W-4 TOC Elevation 741.24 786.65 702.78 704.59 699.37 694.49 707.30 707.25 722.01 704.39 697.75 700.86 717.76 696.78 703.78 701.63 700.96 692.87 694.16 697.43 (ft AMSL) Date GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW 10/14/98 718.61 22.69 738.95 26.35 749.56 19.02 743.48 21.17 671.9 16.15 NI NI 688.64 14.63 NI NI 705.51 8.80 683.11 15.36 668.22 15.86 -- -- 696.94 10.15 NI NI NI NI NI NI NI NI -- -- -- -- -- -- 05/25/99 722.11 19.19 741.60 23.70 675.66 16.68 670.01 20.04 672.46 15.59 NI NI 694.41 8.86 NI NI 707.57 6.74 688.64 9.83 670.21 13.87 -- -- 697.02 10.07 NI NI NI NI NI NI NI NI -- -- -- -- -- -- 09/22/99 721.32 19.98 738.15 27.15 675.19 17.15 670.19 19.86 672.50 15.55 NI NI 691.48 11.79 NI NI 707.59 6.72 686.67 11.80 670.41 13.67 -- -- 697.40 9.69 NI NI NI NI NI NI NI NI -- -- -- -- -- -- 03/27/00 722.49 18.81 742.16 23.14 677.07 15.27 671.51 18.54 672.63 15.42 NI NI 696.90 6.37 NI NI 708.31 6.00 689.25 9.22 670.66 13.42 -- -- 697.69 9.40 NI NI NI NI NI NI NI NI -- -- -- -- -- -- 09/13/00 722.37 18.93 741.46 23.84 675.85 16.49 6.70.67 19.38 672.95 15.10 NI NI 693.97 9.30 NI NI 707.49 6.82 687.37 11.10 670.36 13.72 -- -- 697.39 9.70 NI NI NI NI NI NI NI NI -- -- -- -- -- -- 03/13/01 721.80 19.50 742.16 23.14 676.73 15.61 671.13 18.92 673.10 14.95 NI NI 696.35 6.92 NI NI 708.09 6.22 688.44 10.03 670.57 13.51 -- -- 697.37 9.72 NI NI NI NI NI NI NI NI -- -- -- -- -- -- 09/13/01 720.98 20.32 739.35 25.95 675.60 16.74 669.64 20.41 672.12 15.93 NI NI 691.94 11.33 NI NI 706.96 7.35 684.39 14.09 669.83 14.25 669.61 17.60 697.35 9.74 NI NI NI NI NI NI NI NI -- -- -- -- -- -- 03/08/02 719.08 22.22 739.11 26.19 677.70 14.64 670.10 19.95 672.27 15.78 NI NI 693.72 9.55 NI NI 707.68 6.63 685.95 12.52 670.25 13.83 670.16 17.05 697.07 10.02 NI NI NI NI NI NI NI NI -- -- -- -- -- -- 09/18/02 722.10 19.20 736.11 29.19 675.66 16.68 672.13 17.92 671.50 16.55 NI NI 689.72 13.55 NI NI 707.14 7.17 685.65 12.82 669.54 14.54 669.44 17.77 697.45 9.64 NI NI NI NI NI NI NI NI -- -- -- -- -- -- 04/15/03 724.59 16.71 749.72 15.58 680.23 12.11 672.11 17.94 673.43 14.62 NI NI 698.29 4.98 NI NI 708.16 6.15 690.21 8.26 672.70 11.38 670.97 16.24 697.51 9.58 NI NI NI NI NI NI NI NI -- -- -- -- -- -- 10/15/03 722.82 18.48 746.83 18.47 677.58 14.76 671.18 18.87 674.61 13.44 NI NI 696.16 7.11 NI NI 707.53 6.78 687.39 11.08 670.60 13.48 670.34 16.87 697.88 9.21 NI NI NI NI NI NI NI NI -- -- -- -- -- -- 03/24/04 722.42 18.88 746.79 18.51 676.86 15.48 670.87 19.18 674.54 13.51 NI NI 697.60 5.67 NI NI 708.04 6.27 687.15 11.32 670.27 13.81 670.13 17.08 697.28 9.81 NI NI NI NI NI NI NI NI -- -- -- -- -- -- 09/22/04 722.56 18.74 742.04 23.26 676.70 15.64 670.44 19.61 672.43 15.62 NI NI 693.54 9.73 NI NI 707.45 6.86 687.20 11.27 670.42 13.66 670.14 17.07 697.45 9.64 NI NI NI NI NI NI NI NI -- -- -- -- -- -- 05/09/05 722.14 19.16 746.03 19.27 676.38 15.96 670.72 19.33 674.79 13.26 NI NI 696.23 7.04 NI NI 707.03 7.28 686.65 11.82 670.15 13.93 669.9 17.31 697.79 9.30 686.5 10.51 685.16 18.74 685.99 15.78 691.09 8.71 -- -- -- -- -- -- 10/11 /05 719.72 21.58 738.24 27.06 675.00 17.34 668.89 21.16 671.65 16.40 NI NI 690.19 13.08 NI NI 707.16 7.15 683.38 15.09 669.35 14.73 668.88 18.33 697.45 9.64 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 04/24/06 720.25 21.05 740.68 24.62 675.67 16.67 669.77 20.28 671.97 16.08 NI NI 695.17 8.10 NI NI 707.83 6.48 686.5 11.97 669.61 14.47 669.46 17.75 697.44 9.65 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 10/19/06 721.69 19.61 737.16 28.14 675.49 16.85 669.85 20.20 670.91 17.14 NI NI 690.69 12.58 NI NI 706.71 7.60 685.21 13.26 669.85 14.23 669.61 17.60 697.45 9.64 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 04/12/07 721.61 19.63 764.37 22.28 688.87 13.91 685.82 18.77 683.22 16.15 NI NI 699.63 7.67 NI NI 714.77 7.24 694.20 10.19 685.20 12.55 685.04 15.82 708.44 9.32 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 09/26/07 717.41 23.83 757.27 29.38 685.00 17.78 682.82 21.77 682.16 17.21 NI NI 691.25 16.05 NI NI 712.51 9.50 689.06 15.33 682.24 15.51 682.04 18.82 707.61 10.15 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 04/29/08 722.96 18.28 759.74 26.91 691.81 10.97 685.65 18.94 683.80 15.57 NI NI 698.27 9.03 NI NI 716.34 5.67 696.92 7.47 687.78 9.97 684.84 16.02 708.45 9.31 -- -- -- -- -- -- 691.93 7.87 -- -- -- -- -- -- 12/03/08 -- -- -- -- -- -- -- -- -- -- NI NI -- -- NI NI -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 04/17/09 722.87 18.37 759.02 27.63 688.68 14.10 685.68 18.91 683.71 15.66 NI NI 698.92 8.38 NI NI 716.10 5.91 695.43 8.96 684.61 13.14 683.83 17.03 708.50 9.26 -- -- -- -- -- -- 691.11 8.69 -- -- -- -- -- -- 04/28/10 721.70 19.54 762.67 23.98 686.53 16.25 684.56 20.03 682.37 17.00 NI NI 699.75 7.55 NI NI 714.49 7.52 692.48 11.91 683.86 13.89 681.55 19.31 708.27 9.49 -- -- -- -- -- -- 689.55 10.25 -- -- -- -- -- -- 08/03/10 -- -- 762.73 23.92 685.82 16.96 684.30 20.29 -- -- NI NI -- -- NI NI -- -- -- -- 683.30 14.45 683.05 17.81 -- -- 685.08 11.70 -- -- -- -- -- -- 681.75 11.12 683.83 10.33 688.76 8.67 10/11 /10 721.13 20.11 757.98 28.67 685.92 16.86 683.97 20.62 682.04 17.33 NI NI 692.80 14.50 NI NI 713.80 8.21 691.86 12.53 683.59 14.16 683.29 17.57 708.27 9.49 -- -- -- -- -- -- 688.91 10.89 681.70 11.17 683.85 10.31 688.87 8.56 05/09/11 722.33 18.91 759.52 27.13 687.65 15.13 685.22 19.37 682.45 16.92 -- -- 696.97 10.33 NI NI 715.10 6.91 693.52 10.87 684.06 13.69 683.82 17.04 708.57 9.19 -- -- -- -- -- -- 689.74 10.06 -- -- -- -- -- -- 10/10/11 719.26 21.98 754.73 31.92 685.92 16.86 684.36 20.23 681.86 17.51 680.33 14.16 691.34 15.96 NI NI 714.83 7.18 691.29 13.10 683.73 14.02 683.59 17.27 708.19 9.57 684.76 12.02 -- -- -- -- 689.36 10.44 682.30 10.57 683.80 10.36 688.85 8.58 04/18/12 721.34 19.90 758.49 28.16 687.78 15.00 684.95 19.64 682.07 17.30 -- -- 697.57 9.73 NI NI 714.68 7.33 693.47 10.92 684.01 13.74 683.70 17.16 708.38 9.38 686.03 10.75 -- -- -- -- 689.89 9.91 682.99 9.88 684.23 9.93 690.22 7.21 10/24/12 719.13 22.11 758.49 28.16 686.03 16.75 684.19 20.40 681.56 17.81 680.33 14.16 693.62 13.68 NI NI 714.25 7.76 691.75 12.64 683.46 14.29 683.26 17.60 708.06 9.70 684.76 12.02 -- -- -- -- 688.57 11.23 682.30 10.57 683.80 10.36 688.85 8.58 04/30/13 721.96 19.28 757.43 29.22 688.40 14.38 685.82 18.77 681.48 17.89 681.14 13.35 697.80 9.50 -- -- 715.45 6.56 695.50 8.89 685.48 12.27 684.51 16.35 708.65 9.11 687.18 9.60 -- -- -- -- 690.91 8.89 686.58 6.29 684.75 9.41 691.61 5.82 09/12/13 721.66 19.58 758.54 28.11 686.44 16.34 684.83 19.76 682.06 17.31 680.57 13.92 -- -- 695.29 11.96 713.70 8.31 691.87 12.52 683.88 13.87 683.42 17.44 708.50 9.26 685.57 11.21 -- -- -- -- 688.14 11.66 682.23 10.64 683.67 10.49 688.50 8.93 04/23/14 723.00 18.24 761.60 25.05 689.63 13.15 686.51 18.08 683.17 16.20 681.44 13.05 -- -- 699.98 7.27 715.64 6.37 695.43 8.96 684.59 13.16 684.08 16.78 709.05 8.71 687.80 8.98 -- -- -- -- 690.51 9.29 685.60 7.27 684.72 9.44 691.72 5.71 10/03/14 717.90 23.34 755.73 30.92 685.67 17.11 683.70 20.89 681.26 18.11 679.98 14.51 -- -- 690.94 16.31 711.57 10.44 689.30 15.09 682.64 15.11 683.42 17.44 707.75 10.01 683.76 13.02 -- -- -- -- 687.04 12.76 681.46 11.41 682.42 11.74 684.80 12.63 04/14/15 720.64 20.60 756.79 29.86 688.38 14.40 684.97 19.62 683.23 16.14 680.83 13.66 -- -- 695.82 11.43 715.58 6.43 693.89 10.50 684.04 13.71 683.63 17.23 708.57 9.19 686.13 10.65 -- -- -- -- 688.92 10.88 684.52 8.35 684.38 9.78 690.08 7.35 10/05/15 723.23 18.01 -- -- 687.14 15.64 684.80 19.79 682.61 16.76 681.11 13.38 -- -- 690.94 16.31 716.01 6.00 691.91 12.48 683.80 13.95 683.35 17.51 708.24 9.52 685.62 11.16 -- -- -- -- 688.98 10.82 685.98 6.89 684.19 9.97 689.43 8.00 04/19/16 721.94 19.30 759.55 27.10 687.44 15.34 685.77 18.82 683.21 16.16 680.97 13.52 -- -- 698.83 8.42 715.49 6.52 693.70 10.69 684.37 13.38 683.66 17.20 708.33 9.43 686.83 9.95 -- -- -- -- 689.03 10.77 -- -- -- -- -- -- 09/26/16 721.03 20.21 -- -- 686.88 15.90 684.54 20.05 682.70 16.67 680.36 14.13 -- -- 692.57 14.68 715.53 6.48 690.15 14.24 683.66 14.09 683.61 17.25 708.21 9.55 685.10 11.68 -- -- -- -- 687.81 11.99 681.41 11.46 683.96 10.20 686.38 11.05 03/21 /17 -- -- -- -- 686.40 16.38 685.21 19.38 -- -- -- -- -- -- 695.11 12.14 -- -- 692.10 12.29 683.43 14.32 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 04/25/17 722.07 19.17 <757.30 >TOP 697.36 5.42 687.31 17.28 684.33 15.04 683.67 10.82 -- -- 696.42 10.83 716.84 5.17 699.09 5.30 689.44 8.31 687.18 13.68 708.93 8.83 689.14 7.64 -- -- -- -- 693.52 6.28 687.75 5.12 688.56 5.60 693.84 3.59 10/16/17 720.11 21.13 <757.06 >29.60 685.44 17.34 683.87 20.72 682.03 17.34 680.13 14.36 -- -- 691.91 15.34 715.07 6.94 689.70 14.69 682.49 15.26 682.34 18.52 708.10 9.66 684.44 12.34 -- -- -- -- 687.72 12.08 681.02 11.85 683.13 11.03 686.30 11.13 04/16/18 722.80 18.44 755.05 31.60 689.77 13.01 686.14 18.45 683.76 15.61 681.81 12.68 -- -- 696.74 10.51 716.60 5.41 688.81 15.58 685.69 12.06 685.18 15.68 708.85 8.91 687.64 9.14 -- -- -- -- 691.56 8.24 687.60 5.27 685.64 8.52 692.31 5.12 10/16/18 723.27 17.97 754.04 32.61 687.43 15.35 685.50 19.09 683.74 15.63 681.25 13.24 693.32 13.98 692.94 14.31 715.82 6.19 694.88 9.51 683.96 13.79 683.48 17.38 708.55 9.21 686.74 10.04 -- -- -- -- 690.16 9.64 685.38 7.49 684.77 9.39 691.62 5.81 04/08/19 723.66 17.58 763.10 23.55 688.59 14.19 686.68 17.91 684.88 14.49 681.92 12.57 693.32 13.98 701.04 6.21 716.39 5.62 694.83 9.56 683.94 13.81 683.86 17.00 709.35 8.41 688.24 8.54 -- -- -- -- 689.83 9.97 686.89 5.98 684.95 9.21 691.66 5.77 10/07/19 720.82 20.42 758.35 28.30 685.40 17.38 684.44 20.15 682.52 16.85 680.35 14.14 -- -- 691.54 15.71 713.26 8.75 690.00 14.39 682.15 15.60 681.98 18.88 708.16 9.60 684.15 12.63 -- -- -- -- 687.87 13.09 683.16 9.71 682.46 11.70 686.68 10.75 04/20/20 722.86 18.38 763.04 23.61 686.92 15.86 686.13 18.46 683.99 15.38 681.37 13.12 -- -- 699.35 7.90 716.00 6.01 693.36 11.03 683.44 14.31 683.46 17.40 708.86 8.90 686.27 10.51 -- -- -- -- 689.68 11.28 685.17 7.70 683.95 10.21 690.08 7.35 10/13/20 724.25 16.99 761.86 24.79 687.35 15.43 685.87 18.72 683.53 15.84 681.36 13.13 -- -- 696.61 10.64 715.06 6.95 693.95 10.44 683.78 13.97 683.61 17.25 708.85 8.91 686.35 10.43 686.22 17.56 686.23 15.40 691.36 9.60 686.49 6.38 684.67 9.49 690.83 6.60 04/27/21 723.49 17.75 768.78 17.87 687.39 15.39 686.04 18.55 684.12 15.25 681.34 13.15 701.62 5.68 700.72 6.53 716.02 5.99 693.51 10.88 683.86 13.89 683.50 17.36 708.91 8.85 686.74 10.04 686.63 17.15 686.32 15.31 689.64 11.32 684.45 8.42 684.03 10.13 690.23 7.20 10/12/21 722.58 18.66 761.45 25.20 685.70 17.08 684.72 19.87 682.72 16.65 680.55 13.94 695.82 11.48 695.13 12.12 715.51 6.50 691.21 13.18 682.73 15.02 682.82 18.04 708.27 9.49 684.98 11.80 684.33 19.45 684.96 16.67 688.38 12.58 683.16 9.71 683.35 10.81 688.54 8.89 04/19/22 723.91 17.33 764.75 21.90 690.00 12.78 686.24 18.35 683.82 15.55 681.85 12.64 700.32 6.98 699.30 7.95 716.71 5.30 697.14 7.25 685.65 12.10 684.51 16.35 708.76 9.00 687.82 8.96 687.80 15.98 687.43 14.20 692.47 8.49 687.18 5.69 685.93 8.23 693.35 4.08 10/19/22 720.81 20.43 757.09 29.56 685.39 17.39 683.63 20.96 681.97 17.40 680.13 14.36 692.46 14.84 691.75 15.50 715.01 7.00 689.69 14.70 681.96 15.79 681.98 18.88 707.93 9.83 683.53 13.25 682.41 21.37 683.54 18.09 687.69 13.27 681.37 11.50 682.28 11.88 685.84 11.59 MEAN 721.70 19.57 752.60 25.61 685.22 15.45 681.76 19.47 679.13 16.05 681.08 13.41 695.07 10.15 695.85 11.40 712.29 6.87 690.71 11.54 679.21 13.70 679.96 17.24 704.38 9.44 686.15 10.64 686.03 17.78 686.19 15.47 689.77 10.27 684.22 8.65 684.31 9.85 689.72 7.71 MAXIMUM 724.59 23.83 768.78 32.61 749.56 19.02 743.48 21.77 684.88 18.11 683.67 14.51 701.62 16.05 701.04 16.31 716.84 10.44 699.09 15.58 689.44 15.86 687.18 19.31 709.35 10.15 689.14 13.02 687.80 19.45 687.43 16.67 693.52 13.09 687.75 11.85 688.56 11.74 693.84 12.63 MINIMUM 717.41 16.71 736.11 15.58 675.00 5.42 668.89 17.28 670.91 13.26 679.98 10.82 688.64 4.98 690.94 6.21 705.51 5.17 683.11 5.30 668.22 8.31 668.88 13.68 696.94 8.41 683.76 7.64 684.33 15.98 684.96 14.20 687.04 6.28 681.02 5.12 682.42 5.60 684.80 3.59 Notes: 1. ft AMSL = feet above mean sea level. 2. -- = not measured or no data 3. TOC = top of casing 4. NI = not installed 5. MW = monitoring well, GW = groundwater, DTW = depth to water 6. TOC and Water Elevation Data for dates prior to April 2017 from historical S&ME, Inc. Ground and Surface Water Monitoring Reports. 7. Well TOC survey conducted 2013-2014 by S&ME, Inc. for more accurate elevations. 1 of 1 February 2023 TABLE 2 Summary of Estimated Horizontal Flow Velocities White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina 19131339.105 October 2022 Gradient Flow Gradient Gradient Segment Horizontal Effective Porosity Hydraulic Velocity Calculation Direction Segment Length Elevations Gradient (ne) Conductivity (VyW, feet/year) Segment (feet) (feet) (i, feet) (K, cm/sec) i 3 West -Northwest 2267 ----------- 690---------- 0.0265 0.02 2.61 E-04 357 i 4 North -Northwest 1237 ---------- 690---------- 0.0243 0.02 2.61 E-04 327 Average i Average VFW 0.0254 342 Notes: 1. Horizontal velocities based on the modified Darcy equation VgW = Ki/ne. 2. Values for K were based on the geometric mean of slug test values from all site monitoring wells as prepared by BPA Environmental & Engineering Inc. 3. The effective porosity for saprolite was used in velocity calculations. 4. cm/sec = centimeters per second 1 of 1 February 2023 TABLE 3 Summary of Well Construction Information White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina 19131339.105 Monitoring Well Identification Northing Easting Date of Construction Top -of -Casing Elevation (ft AMSL) Well Depth (feet) Well Diameter (inches) Screened Interval (ft bgs) Geology of Screened Interval Well Status II-1 863027.3314 1787495.6766 07/14/89 702.78 26.6 2 20.0 30.0 Water Table Aquifer Compliance / Sentinel Well II-2 864184.3539 1788403.6364 07/14/89 704.59 33.4 2 24.0 34.0 Water Table Aquifer Compliance Well II-3 864245.1544 1789031.9589 07/14/89 699.37 32.6 2 23.0 33.0 Water Table Aquifer Compliance Well II-313 864365.2295 1789116.1385 06/03/11 694.49 25.0 2 10.0 25.0 Water Table Aquifer NES Well II4A 863581.7689 1789359.9497 08/13/13 707.25 25.0 2 10.0 25.0 Water Table Aquifer Compliance Well II-5 863032.9389 1789345.4003 07/14/89 722.01 16.0 2 19.0 29.0 Water Table Aquifer Compliance Well II-6 862513.6388 1787002.3258 07/14/89 704.39 20.7 2 7.5 20.0 Water Table Aquifer Compliance Well II-7 863701.8380 1787823.6893 07/14/89 697.75 27.7 2 12.5 27.5 Water Table Aquifer Compliance / Sentinel Well II-713 863703.7309 1787839.3286 12/11/00 700.86 103.5 2 90.7 103.5 Water Table Aquifer Compliance / Sentinel Well II-8 861207.1750 1786938.1186 07/14/89 717.76 35.0 2 20.0 35.0 Water Table Aquifer Compliance Well II-9 863924.1830 1787952.6658 03/21/05 696.78 25.0 2 7.8 21.8 Water Table Aquifer Sentinel Well II-12 862084.6402 1786802.0936 03/22/05 699.80 22.8 2 5.7 19.7 Water Table Aquifer Compliance Well SMW-1 864374.8279 1788376.0728 07/08/10 692.87 18.4 2 8.4 18.4 Water Table Aquifer Sentinel Well SMW-3 863983.9035 1787857.4169 07/08/10 694.16 25.0 2 10.0 25.0 Water Table Aquifer Sentinel Well SMW-4 862512.4617 1786835.2747 07/08/10 697.43 23.9 2 8.9 23.9 Water Table Aquifer Sentinel Well MW-13 858763.9106 1783188.5206 07/14/89 741.24 33.8 2 20.0 35.0 Water Table Aquifer Background Well MW-14 859453.8757 1788632.2264 07/14/89 786.65 34.4 2 20.0 35.0 Water Table Aquifer Background Well Notes: 1. ft AMSL= feet above mean sea level 2. ft bgs = feet below ground surface 5. Unless otherwise noted, well construction survey information, Water Quality Monitoring Reports and Water Quality Monitoring Plans provided by Survey Solutions S&ME. 1 of 1 February 2023 TABLE 4 19131339.105 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method SWS Assessment Reporting Sample Practical Upgradient Monitoring Wells Compliance Downgradient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constituent Detection Reporting Blanks Units Date Quantitation Limit Well Limit Limit MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Antimony ug/L 03/01/99 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND IMAC = 1 ug/L ug/L 09/01/99 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 6 ug/L ug/L 03/01/00 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 30 ND ND 0.54 ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.68 -- 6 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.68 -- 6 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.68 -- 6 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.073 -- 6 ND ND ND ND ND -- ND 0.211 J ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.22 -- 6 ND ND ND ND ND -- ND 0.242 J ND 0.248 J ND ND -- -- -- -- -- ND ug/L 08/02/10 0.22 -- 6 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.22 -- 6 ND ND 0.224 J ND ND -- ND 0.374 J ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.22 -- 6 ND ND 0.365 J ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.22 -- 6 ND ND 0.276 J ND ND -- ND 0.384 J ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.22 -- 6 ND ND 0.527 J ND 0.862 J -- 0.232 J ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 0.22 -- 6 ND ND ND ND ND -- ND ND 0.716 J ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.22 -- 6 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.22 -- 6 ND ND ND ND ND ND ND 0.345 J ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.22 -- 6 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.22 -- 6 ND ND 0.296 J ND 0.293 J ND ND ND ND ND ND ND ND ND 0.316 J 0.296 J 0.532 J ND ug/L 04/14/15 0.22 -- 6 ND ND 0.331 J 0.614 J ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.22 -- 6 0.22 -- 0.418 J ND 0.344 J ND ND ND ND ND ND ND ND ND 0.456 J ND 2.43 J ND ug/L 04/20/16 0.22 -- 6 ND 0.22 ND ND 0.282 J ND 0.239 J ND ND ND ND ND ND ND ND ND 0.22 ND ug/L 09/26/16 0.22 -- 6 ND -- ND ND ND ND ND 0.244 J ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.37 -- 6 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.37 -- 6 ND -- ND ND ND ND ND 0.471 J ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.37 -- 6 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 1.85 5.00 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 1.85 0.50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.74 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.74 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.74 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.74 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.74 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 0.74 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/20/22 0.52 5.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Arsenic ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 10 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 10 ug/L ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND 2.5 J -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND 2.8 J ND ND ND -- ND -- ND ND 2.4 J -- -- -- -- -- -- ND ug/L 04/29/08 2.0 -- 10 2.4 J 2.9 J ND ND ND -- 2.2 J ND 3.1 J ND ND ND -- -- -- -- -- ND ug/L 12/01/08 2.8 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 2.8 -- 10 ND 3.1 B ND 3.8 B ND -- ND 3.3 B ND ND ND 4.9 B -- -- -- -- -- -- ug/L 10/16/09 2.8 -- 10 ND 3.81 J ND ND ND -- 3.4 J ND ND 3.95 J ND -- -- -- -- -- -- ND ug/L 04/28/10 2.8 -- 10 ND 4.6 J ND ND 4.79 J -- ND ND ND 5.22 J ND ND -- -- -- -- -- ND ug/L 08/02/10 2.8 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 4.07 J ND ND ND ug/L 10/11/10 2.8 -- 10 ND ND ND ND ND -- ND 5.22 J ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 2.8 -- 10 ND 3.08 B ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 2.8 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND 4.29 J ND ND ND ug/L 04/17/12 2.8 -- 10 3.73 J 3.86 J 3.06 J ND ND -- 6.84 J ND ND 6.24 J 10.1 B ND -- -- -- -- -- -- ug/L 10/25/12 2.8 -- 10 ND 2.87 J ND ND ND -- 3.10 J 8.68 J 7.97 J 4.09 J ND 6.04 J 7.21 J 3.53 J 6.54 J ND ND -- ug/L 05/02/13 2.8 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 5.4 -- 10 ND ND ND 5.78 J ND ND ND ND ND ND ND ND ND ND 5.98 J ND ND ND ug/L 04/24/14 5.4 -- 10 ND 6.51 J ND ND ND -- ND ND ND ND 7.05 J 5.40 ND ND ND ND ND ND ug/L 10/06/14 5.4 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 6.8 -- 10 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 6.8 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 6.8 -- 10 ND 6.80 11.6 ND ND ND ND ND ND ND ND ND ND ND ND ND 6.80 ND ug/L 09/26/16 6.8 -- 10 ND -- ND ND ND 9.78 J ND 9.30 J 7.45 J ND ND ND ND ND ND ND ND ND ug/L 04/25/17 6.8 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 6.8 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 6.8 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 7.6 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 7.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 7.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 7.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 7.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 7.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 7.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 7.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 6.4 20 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Barium ug/L 03/01/99 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 700 ug/L ug/L 09/01/99 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 2000 ug/L ug/L 03/01/00 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND 600 -- ND -- -- -- ND ug/L 10/01/05 -- -- 500 ND ND ND ND ND -- ND 560 ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- 120 14.4 J 244 60.3 J 218 -- 131 292 26.4 J 16.5 J 74.6 J -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- 130 10.9 J 235 44.3 J 188 B -- 139 B -- 77.7 J 12.8 J 75.0 J -- -- -- -- -- -- -- ug/L 04/29/08 0.2 -- 100 107 13.0 J 241 50.4 J 244 -- 70.4 J 69.8 J 7.1 J 10.4 J 79.7 J 532 -- -- -- -- -- ND ug/L 12/01/08 1.0 -- 100 127 12.7 J 296 46.2 J 194 -- 110 486 17.9 J 11.1 J 86.8 J 878 -- -- -- -- -- ND ug/L 12/05/08 1.0 -- 100 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ug/L 04/17/09 4.2 -- 100 132 14.3 J 245 74.4 J ND -- 71.6 J 37.1 J 13.9 J 10.2 J 87.6 J 488 -- -- -- -- -- ND ug/L 10/16/09 1.0 -- 100 119 12.5 J 203 41.2 J 203 -- 124 410 90.7 J 10.2 J 79.2 J -- -- -- -- -- -- ND ug/L 04/28/10 1.0 -- 100 112 17.1 J 309 63.1 J 183 -- 89.0 J 339 21.7 J 11.5 J 87.7 J 386 -- -- -- -- -- ND ug/L 08/02/10 1.0 -- 100 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 144 228 178 ND ug/L 10/11/10 1.0 -- 100 87.9 J 15.8 J 225 40.9 J 164 -- 114 356 14.8 J 9.15 J 74.3 J 473 -- -- 140 301 164 ND ug/L 05/09/11 1.0 -- 100 108 12.3 J 415 53.5 J 207 -- 91.4 J 104 13.1 J 10.6 J 105 397 -- -- -- -- -- ND ug/L 10/12/11 1.0 -- 100 115 17.4 J 429 45.2 J 191 -- 106 431 26.8 J 9.50 J 115 430 202 78.4 114 78.4 J 128 ND ug/L 04/17/12 1.0 -- 100 112 14.1 J 329 80.1 J 198 -- 89.6 J 105 22.4 J 9.45 J 123 396 -- -- -- -- -- ND ug/L 10/25/12 1.0 -- 100 104 18.1 J 422 55.7 J 187 -- 84.6 J 394 8.92 J 94.4 J 118 448 169 90.4 J 128 180 134 ND ug/L 05/02/13 1.0 -- 100 120 20.5 J 253 57.3 J 218 -- 88.4 J 26.1 J 21.9 9.59 J 131 341 167 91.8 J 117 150 123 ND ug/L 09/24/13 1.0 -- 100 85.9 J 14.6 J 355 55.0 J 192 186 71.5 J 328 42.7 J 9.31 J 122 396 157 93.8 J 125 181 140 ND ug/L 04/24/14 1.0 -- 100 98.7 J 17.3 J 261 58.6 J 218 -- 53.4 J 22.6 J 22.3 J 9.61 J 143 171 171 37.6 J 109 221 112 ND ug/L 10/06/14 1.0 -- 100 88.3 J 18.5 J 446 53.8 J 197 182 94.0 J 382 159 11.2 J 142 384 156 109 112 222 266 ND ug/L 04/14/15 1.0 -- 100 105 19.7 J 376 62.1 J 265 216 109 90.1 J 71.7 J 9.99 J 116 -- 179 110 108 333 139 ND ug/L 10/07/15 1.0 -- 100 93.3 J -- 424 221 201 187 102 269 87.0 13.4 J 150 221 178 110 69.0 J ND 59.7 J ND ug/L 04/20/16 1.0 -- 100 91.3 J 13.6 J 351 51.1 J 230 166 149 96.6 J 124 11.0 J 159 396 172 63.9 J ND 209 153 ND ug/L 09/26/16 1.0 -- 100 85.1 J -- 346 50.9 J 189 177 204 205 186 11.9 J 146 379 175 108 114 219 182 ND ug/L 04/25/17 1.0 -- 100 96.6 J 14.7 J 386 55.7 J 220 170 122 25.2 J 13.6 J 12.0 J 176 100 172 98.5 J 112 107 38.8 J ND ug/L 10/17/17 1.0 -- 100 94.1 J -- 426 51.6 J 202 193 195 433 194 21.2 J 170 273 163 109 98.4 J 303 166 ND ug/L 04/16/18 1.0 -- 100 82.7 J 26.5 J 415 55.5 J 214 192 76.4 J 135 21.3 J 28.2 J 190 191 163 94.0 J 114 362 36.0 J ND ug/L 10/16/18 1.1 10 -- 94.5 -- 365 57.8 174 190 131 244 21.6 25.9 167 194 67.8 56.0 117 119 55.8 ND ug/L 04/12/19 1.1 10 -- 95.9 17.0 288 57.7 257 166 101 46.0 18.3 28.4 180 104 177 78.9 233 351 53.2 ND ug/L 10/07/19 1.1 10 -- 89.0 13.3 404 52.9 170 199 245 331 190 32.2 192 299 171 98.0 165 418 126 ND ug/L 04/20/20 1.1 10 -- 98.9 16.8 312 68.3 188 160 124 148 55.9 36.4 181 279 155 66.8 91.5 295 110 ND ug/L 10/13/20 1.1 10 -- 112 12.5 375 81.2 176 204 71.5 183 32.2 35.0 195 125 175 98.4 118 275 72.2 ND ug/L 04/28/21 1.1 10 -- 88.6 10.7 317 90.1 162 127 72.4 59.2 34.9 38.0 192 233 171 63.3 93.7 430 88.9 ND ug/L 10/14/21 1.1 10 -- 89.8 10.9 385 124 161 226 86.4 239 152 34.0 194 72.0 159 99.1 125 508 97.9 ND ug/L 04/19/22 1.1 10 -- 97.9 10.8 293 79.4 140 142 39.9 25.9 25.2 33.7 171 57.0 158 68.6 111 225 38.9 ND ug/L 10/20/22 4.4 10 -- 82.0 11 370 57 150 160 120 180 180 29 170 170 150 78.0 120 520 100 ND Beryllium ug/L 03/01/99 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND IMAC = 4 ug/L ug/L 09/01/99 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 4 ug/L ug/L 03/01/00 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.7 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.08 -- 1 ND ND ND ND ND -- ND ND ND ND ND 0.46 J -- -- -- -- -- ND ug/L 10/16/09 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.10 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.10 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.10 -- 1 ND 0.102 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.10 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.10 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.10 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.10 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.13 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.16 1.00 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.16 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.16 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.16 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.16 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.16 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.16 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 0.16 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.03 4.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 of 17 February 2023 TABLE 4 19131339.105 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method SWS Assessment Reporting Sample Practical Upgradient Monitoring Wells Compliance Downgradient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constituent Detection Reporting Blanks Units Date Quantitation Limit Well Limit Limit MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Cadmium ug/L 03/01/99 -- -- 1 ND ND 3 ND ND -- ND 3 ND ND ND ND -- ND -- -- -- ND NC 2L = 2 ug/L ug/L 09/01/99 -- -- 1 ND ND 2 ND ND -- ND 2 ND ND 1 -- -- -- -- -- -- ND EPA MCL = 5 ug/L ug/L 03/01/00 -- -- 1 ND ND 2 ND 4 -- 2 ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 1 ND ND 2 ND 1 -- ND 2 ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 1 ND ND 1.8 ND 5.7 -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 1 ND ND 1.9 1.3 5.6 -- 1.5 6.1 1.0 1.3 1.5 -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 1 ND ND 1.0 1.0 2.1 -- 1.9 2.1 ND ND 1.0 ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 1 ND ND ND ND ND -- ND 4.5 ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 1 ND ND ND ND 2.0 -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 1 ND ND 1.1 ND 4.7 -- ND 3.6 ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 1 ND 1.3 1.2 1.0 1.6 -- 1.4 1.8 ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.50 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.09 -- 1 ND 0.15 J 0.26 J 0.17 J 0.24 J -- ND 0.26 J 0.14 J 0.21 J 0.26 J 0.27 J -- -- -- -- -- ND ug/L 10/16/09 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.36 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 1.78 ND ND ND ug/L 10/11/10 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- 4.79 ND ND ND ug/L 05/09/11 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND 3.52 ND ND ND ug/L 04/17/12 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND 1.62 ND ND ND ug/L 05/02/13 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND 8.42 ND ND ND ug/L 09/24/13 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND ND 0.644 J ND ND 2.00 ND ND ND ug/L 04/24/14 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND 3.01 ND ND ND ND ug/L 10/06/14 0.36 -- 1 ND 0.842 J ND ND ND ND ND 0.43 J ND ND 0.502 J ND ND 1.62 ND ND ND ND ug/L 04/14/15 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND 4.92 ND ND ND ug/L 10/07/15 0.36 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND 3.45 ND ND ND ug/L 04/20/16 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.36 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND 0.375 ND ND ND ND ug/L 04/25/17 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 8.65 ND ND ND ug/L 10/17/17 0.36 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND 0.933 J 3.95 ND ND ND ug/L 10/16/18 0.36 1.00 -- ND -- ND ND ND ND ND ND ND ND ND ND ND 0.557 J 6.82 ND ND ND ug/L 04/12/19 0.36 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND 0.368 B 15.0 ND ND 0.361 ug/L 10/07/19 0.36 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.36 1.00 -- ND ND ND ND ND ND ND ND ND ND ND 0.593 J ND 0.741 J 4.96 ND ND ND ug/L 10/13/20 0.36 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND 4.54 ND ND ND ug/L 04/28/21 0.36 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND 0.548 J 7.70 ND ND ND ug/L 10/14/21 0.36 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1.75 ND ND ND ug/L 04/19/22 0.36 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND 9.55 ND ND ND u /L 10/20/22 0.44 5.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.81 J ND ND ND Chromium ug/L 03/01/99 -- -- 10 ND ND 47 ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 10 ug/L ug/L 09/01/99 -- -- 10 ND ND 20 ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 100 ug/L ug/L 03/01/00 -- -- 10 ND ND 54 ND ND -- 12 ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND 21 ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND 32 ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND 10 ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND 3.0 J ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 2.0 -- 10 ND 6.9 J ND ND ND -- ND 6.7 J ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 1.0 -- 10 ND 3.3 J ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/05/08 1.0 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ug/L 04/17/09 0.7 -- 10 ND 6.9 J 2.4 J 1.9 J 3.6 J -- 2.8 J 0.7 J 0.9 J 0.8 J 1.6 J 24.7 -- -- -- -- -- ND ug/L 10/16/09 1.0 -- 10 ND 3.55 J 3.69 J ND 2.29 J -- 1.51 J 3.77 J 5.25 J ND ND -- -- -- -- -- -- ND ug/L 04/28/10 1.0 -- 10 ND 2.24 J 2.4 J ND 2.24 J -- 1.93 J ND 1.05 J ND ND ND -- -- -- -- -- ND ug/L 08/02/10 1.0 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 2.06 J ND ND ND ug/L 10/11/10 1.0 -- 10 ND 3.15 J ND ND 1.67 J -- ND ND ND 1.45 J ND ND -- -- 6.52 J 7.86 J ND ND ug/L 05/09/11 1.0 -- 10 ND 4.26 J 4.93 J ND 1.87 J -- ND ND 1.04 J ND 1.42 J 1.17 J -- -- -- -- -- ND ug/L 10/12/11 1.0 -- 10 1.27 J 4.88 J 6.87 J 1.64 J 2.22 J -- 3.01 J 6.47 J 1.31 J ND 3.17 J 2.19 J 7.42 J 4.13 J 1.89 J 3.44 J 1.47 J ND ug/L 04/17/12 1.0 -- 10 ND 3.75 J 6.80 J 2.15 J 3.16 J -- 2.42 J 1.22 J 1.12 J ND 2.71 J 1.62 J -- -- -- -- -- ND ug/L 10/25/12 1.0 -- 10 ND 2.23 J 2.85 J ND 2.15 J -- 1.13 J 3.16 J ND ND 1.04 J ND J ND 1.90 J 2.52 J ND ND ND ug/L 05/02/13 1.4 -- 10 1.74 J 2.19 J ND ND 5.55 J -- 2.02 J 1.59 J 2.82 J ND 2.51 J ND ND 2.39 J 3.75 J ND ND ND ug/L 09/24/13 1.4 -- 10 ND ND 2.92 J ND 3.99 J 2.03 J ND 1.49 J ND ND ND 3.97 J 2.63 J ND ND 3.98 J ND ND ug/L 04/24/14 1.4 -- 10 ND 1.51 J 2.28 J ND 2.77 J -- 1.60 J ND 2.09 J ND 2.63 J 3.34 J ND 2.35 J 1.88 J ND ND ND ug/L 10/06/14 1.4 -- 10 ND ND 4.79 J ND 1.57 J 1.94 J ND 3.92 J ND ND 1.71 J 2.17 J ND 2.67 J 4.16 J 1.83 J 1.93 J ND ug/L 04/14/15 1.4 -- 10 ND ND 3.88 J ND 7.10 J ND 1.83 J ND 1.60 J ND ND -- ND ND ND ND 2.83 J ND ug/L 10/07/15 1.4 -- 10 ND -- 3.16 J 3.17 J ND ND 5.02 J 2.47 J ND ND 2.10 J 3.17 J ND ND 2.19 J ND 5.87 J ND ug/L 04/20/16 1.4 -- 10 ND ND ND ND 3.14 J ND 1.82 J ND ND ND ND 5.50 J ND ND ND ND 9.98 J ND ug/L 09/26/16 1.4 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 1.4 -- 10 ND ND ND ND 2.04 J ND 8.77 J 2.76 J 1.91 J ND ND 5.21 J ND 2.13 J 9.36 J ND 3.26 J ND ug/L 10/17/17 1.4 -- 10 ND -- 3.73 J ND 1.68 J 2.05 J 2.82 J 2.40 J ND ND 2.87 J ND 1.57 J 2.38 J 2.16 J ND 1.60 J ND ug/L 04/16/18 1.4 -- 10 ND 1.91 J 2.34 J ND ND ND 2.71 J ND 1.40 J ND ND 2.08 J ND ND 2.63 J ND ND ND ug/L 10/16/18 1.4 10 -- ND -- 3.37 J ND 3.00 J 2.66 J 2.27 J ND 2.14 J ND 3.53 J 1.60 J 2.15 J 2.39 J 3.11 J ND ND ND ug/L 04/12/19 1.4 10 -- ND ND 3.07 J ND 2.57 J 2.75 J 3.17 J ND 2.55 J ND 3.71 J 1.87 J 1.57 J ND 3.38 J ND ND ND ug/L 10/07/19 1.4 10 -- ND ND 2.82 J ND 2.13 J 2.30 J 2.35 J 3.13 J ND ND 2.99 J ND ND ND ND ND ND ND ug/L 04/20/20 1.4 10 -- ND ND 4.21 J ND 4.38 J ND 1.56 J ND ND ND ND 1.75 J ND ND ND ND ND ND ug/L 10/13/20 1.4 10 -- 2.51 J ND 5.83 J 2.95 J 3.71 J 3.13 J 2.70 J 3.73 J 2.60 J 2.49 J 5.04 J 3.01 J 2.68 J 2.38 J 3.36 J 1.97 J 2.26 J ND ug/L 04/28/21 1.4 10 -- ND 2.26 J 4.92 J ND 2.24 J ND ND ND ND ND ND ND ND ND 2.18 J ND ND ND ug/L 10/14/21 1.4 10 -- ND ND 6.72 J ND 2.78 J ND 1.41 J 3.26 J ND 1.64 J ND ND ND ND 2.66 J ND ND ND ug/L 04/19/22 1.4 10 -- ND ND 5.61 J ND 3.10 J ND 1.64 J ND 1.43 J ND 1.47 J ND ND ND 1.91 J ND ND ND u /L 10/20/22 1.1 10 -- ND ND 1.20 J ND 1.80 J ND 6.00 J ND ND ND ND 1.8 J ND ND 1.10 J ND 1.4 J ND Cobalt ug/L 03/01/99 -- -- 10 ND ND 36 ND 13 -- 18 27 ND ND ND ND -- ND -- -- -- ND NC 2L = 1 ug/L ug/L 09/01/99 -- -- 10 ND ND 18 ND 10 -- ND 13 ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 10 ND ND 29 ND 45 -- 46 ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND 41 ND 14 -- ND 12 ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND 19 ND 34 -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND 46 ND 28 -- 11 39 ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND 10 ND 18 -- 1.2 15 ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND 29 ND 10 -- ND 36 ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND 14 61 -- 33 ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND 13 ND 39 -- 13 29 ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND 28 ND 72 -- 15 20 ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND 17 ND 25 -- 11 15 ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND 24 ND 40 -- ND 25 ND ND ND 33 -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND 60 ND 23 -- 13 48 ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND 72.3 ND 31.8 -- 12.8 42.7 ND ND ND -- -- -- -- -- -- ND ug L 04/12/07 -- -- -- N D N D N D -- 12.3 24.5 N D N D N D -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND 62.0 2.0 21.7 -- 17.5 -- N D N D ND -- -- -- -- -- -- ND ug/L 04/29/08 2.0 -- 10 ND ND 4.3 J ND 26.0 -- 2.1 J 5.3 J ND ND ND 49.2 -- -- -- -- -- ND ug/L 12/01/08 1.1 -- 10 ND ND 51.4 ND 25.1 -- 4.4 J 42.4 1.3 J ND ND 22.4 -- -- -- -- -- ND ug/L 12/05/08 1.1 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ug/L 04/17/09 0.6 -- 10 ND ND ND ND 21.6 -- 4.1 J 1.1 J ND ND ND 34.4 -- -- -- -- -- ND ug/L 10/16/09 1.1 -- 10 ND ND 36.5 ND 25.2 -- 20.1 34.5 2.3 J ND ND -- -- -- -- -- -- ND ug/L 04/28/10 1.1 -- 10 ND ND 26. ND 23.0 -- 32.3 25.8 2.11 J ND 1.46 J 8.21 J -- -- -- -- -- ND ug/L 08/02/10 1.1 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 15.5 3.12 J 4.55 J ND ug/L 10/11/10 1.1 -- 10 ND ND 35.8 ND 16.1 -- 23.2 27.7 ND ND ND 6.73 J -- -- 7.34 J 13.0 1.48 ND ug/L 05/09/11 1.1 -- 10 ND ND 22.4 ND 21.2 -- 5.86 J 4.91 J ND ND ND 8.16 J -- -- -- -- -- ND ug/L 10/12/11 1.1 -- 10 ND ND 59.4 ND 18.5 -- 9.65 J 40.7 ND ND 1.88 J 4.74 J 7.05 J 6.38 J 7.7 J 1.45 J 5.54 J ND ug/L 04/17/12 1.1 -- 10 ND ND 23.1 ND 14.1 -- 7.28 J 6.23 J ND ND 1.77 J 6.20 J -- -- -- -- -- ND ug/L 10/25/12 1.1 -- 10 ND ND 44.2 ND 14.6 -- 1.33 J 35.3 ND ND 1.25 J 1.85 J 2.31 J 4.48 J 10.3 1.92 J ND ND ug/L 05/02/13 1.1 -- 10 ND ND 17.0 ND 17.1 -- 6.58 J ND ND ND ND 4.88 J 1.70 J 2.57 J 1.10 2.39 J ND ND ug/L 09/24/13 1.1 -- 10 ND ND 45.1 ND 14.0 4.20 J 6.64 J 23.1 2.56 J ND 2.32 J 6.01 J 3.04 J 4.31 J 16.6 4.27 J 6.75 J ND ug/L 04/24/14 1.1 -- 10 ND ND 20.5 ND 14.4 -- 6.06 J ND ND ND 1.71 J 6.81 J 2.66 J 11.4 1.72 J 2.50 J 1.48 J ND ug/L 10/06/14 1.1 -- 10 ND ND 58.5 ND 12.3 1.33 J 11.0 29.3 1.63 J ND 1.87 J 1.65 J 1.42 J 4.61 J 11.2 2.76 J 4.22 J ND ug/L 04/14/15 1.1 -- 10 ND ND 26.8 ND 18.5 1.82 J 12.2 5.11 J ND ND 2.03 J -- 2.09 J 3.32 J 20.8 3.40 J 1.10 J ND ug/L 10/07/15 1.1 -- 10 ND -- 42.7 9.65 J 12.9 ND 3.46 J 21.2 3.51 ND 1.75 J 9.65 J 2.22 J 6.64 J 19.9 2.01 J ND ND ug/L 04/20/16 1.1 -- 10 ND ND 35.5 ND 11.2 ND 16.4 5.77 J ND ND 2.42 J 7.80 J 1.42 J 18.7 30.7 2.10 J 1.77 J ND ug/L 09/26/16 1.1 -- 10 ND -- 50.2 ND 10.6 ND 15.4 26.2 1.60 J ND 2.29 J 3.05 J 1.35 J 3.97 43.4 2.88 J 1.50 J ND ug/L 04/25/17 1.1 -- 10 ND ND 20.3 ND 12.4 ND 4.75 J ND ND ND 3.30 J 4.19 J 1.41 J 2.71 J 2.39 J 1.39 J ND ND ug/L 10/17/17 1.1 -- 10 ND -- 48.6 1.39 J 9.06 J ND 15.1 33.8 2.57 J ND 4.20 J 1.65 J 4.41 J 4.63 J 21.4 3.30 J 2.08 J ND ug/L 04/16/18 1.1 -- 10 ND 1.53 J 29.9 ND 10.6 ND 6.18 J 12.9 ND ND 4.20 J 8.52 J 2.82 J 2.26 J 16.2 4.16 J ND ND ug/L 10/16/18 1.4 10 -- ND -- 20.2 ND 7.50 J ND 8.87 J 21.5 ND ND 4.19 J 2.00 J 3.16 J 1.49 J 14.0 2.37 J ND ND ug/L 04/12/19 1.4 10 -- ND ND 27.3 ND 12.1 ND 3.65 J ND ND ND 6.20 J 3.19 J 2.77 J 5.42 J 8.20 J 3.16 J ND ND ug/L 10/07/19 1.4 10 -- ND ND 36.8 ND 6.09 J ND 20.6 17.1 2.51 J ND 4.56 J 3.54 J 1.72 J 3.11 J 68.3 3.38 J ND ND ug/L 04/20/20 1.4 10 -- ND ND 21.0 ND 5.62 J ND 8.99 J 15.3 ND ND 4.17 J 2.19 J 1.62 J ND 24.8 1.55 J ND ND ug/L 10/13/20 1.4 10 -- ND ND 23.6 ND 5.70 J ND 4.12 J 10.1 ND ND 6.67 J 7.33 J 1.88 J 4.11 J 30.3 1.73 J ND ND ug/L 04/28/21 1.4 10 -- ND ND 26.3 ND 10.3 ND 4.32 J 2.06 J ND ND 6.54 J 5.31 J 1.47 J ND 20.0 3.06 J ND ND ug/L 10/14/21 1.4 10 -- ND ND 34.2 6.76 J 8.48 J ND 3.04 J 14.3 2.17 J ND 5.93 J ND ND ND 45.0 6.26 J ND ND ug/L 04/19/22 1.4 10 -- ND ND 24.7 ND 5.72 J 1.45 J 2.93 J ND ND ND 7.08 J ND 3.08 J 1.43 J 2.90 J 2.11 J ND ND ug/L 10/20/22 1.4 10 -- ND ND 37.0 ND 7.50 J ND 5.10 J 11.0 3.30 J ND 6.30 J 2.50 J 1.80 J 1.40 J 6.10 J 6.70 J ND ND Copper ug/L 03/01/99 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 1000 ug/L ug/L 09/01/99 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 1300 ug/L ug/L 03/01/00 -- -- 200 ND ND 220 ND ND -- 360 ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- 1.2 J 0.6 5.3 J 2.0 J 0.6 J -- 0.6 0.6 0.6 J 0.6 0.7 J -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- 0.6 1.0 B ND 2.2 B ND -- ND -- 0.8 B ND 2.0 B -- -- -- -- -- -- -- ug/L 04/29/08 0.6 -- 10 4.0 J 2.8 J 8.0 J ND ND -- 4.4 J 7.7 J 4.1 J 2.9 J 2.5 J ND -- -- -- -- -- ND ug/L 12/01/08 1.6 -- 10 ND ND 3.3 J ND ND -- ND ND 1.8 J ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.81 -- 10 ND ND ND ND 3.4 J -- 1.31 J 1.7 J ND 2.17 J ND 13.9 -- -- -- -- -- ND ug/L 10/16/09 1.6 -- 10 ND ND 4.76 J ND 2.31 J -- ND ND 3.91 J 1.95 J ND -- -- -- -- -- -- ND ug/L 04/28/10 1.6 -- 10 ND ND 4.05 J ND 3.42 J -- ND 3.86 J 1.88 J ND ND ND -- -- -- -- -- ND ug/L 08/02/10 1.6 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 11.9 1.66 J ND ND ug/L 10/11/10 1.6 -- 10 ND ND 15.4 ND 2.03 J -- ND ND 1.76 J 1.67 J ND ND -- -- 18.1 72.0 2.35 J ND ug/L 05/09/11 1.6 -- 10 ND ND 17.3 ND 1.79 J -- 2.89 J 2.46 J ND 1.81 J ND ND -- -- -- -- -- ND ug/L 10/12/11 1.6 -- 10 ND ND 9.93 B ND ND -- 1.96 J ND ND 2.54 J ND ND 2.62 J 9.54 9.63 J 7.38 J ND ND ug/L 04/17/12 1.6 -- 10 ND ND 6.67 J ND 2.64 J -- 1.75 J 2.92 J ND 2.02 J ND ND -- -- -- -- -- ND ug/L 10/25/12 1.6 -- 10 ND ND 21.6 ND ND -- 2.46 J ND 1.64 J ND ND ND ND 6.12 J 5.37 J ND ND ND ug/L 05/02/13 1.6 -- 10 ND ND 7.45 J ND ND -- ND 1.62 J ND ND ND ND ND 1.79 J 11.1 ND ND ND ug/L 09/24/13 1.6 -- 10 ND ND 8.78 J ND ND ND ND ND ND 1.69 J ND 1.61 J ND ND 2.56 J ND ND ND ug/L 04/24/14 1.6 -- 10 1.87 J 2.24 J 8.55 J ND 2.14 J -- 4.30 J 2.62 J 2.07 J 3.98 J 2.51 J 2.20 J ND 72.7 6.18 J 3.40 J ND ND ug/L 10/06/14 1.6 -- 10 ND ND 14.4 ND ND ND ND ND ND ND ND ND ND 28.2 1.77 J 4.50 J ND ND ug/L 04/14/15 1.6 -- 10 ND ND 6.09 J ND 5.46 J ND 3.37 J 3.18 J 5.89 J 3.95 J ND -- ND ND 10.9 5.25 J 1.60 ND ug/L 10/07/15 1.6 -- 10 ND -- 13.3 ND ND ND 3.17 J 9.18 J ND ND ND ND ND ND 12.9 ND ND ND ug/L 04/20/16 1.6 -- 10 ND ND ND ND 3.18 J ND ND 2.62 J ND 2.00 J 2.04 J 4.03 J ND 27.0 7.69 J 2.49 J 1.60 ND ug/L 09/26/16 1.6 -- 10 3.10 J -- 5.98 J 3.27 J 2.63 J 3.31 J 2.97 J 4.37 J 5.13 J 3.95 J 8.28 J ND 3.04 J 4.47 4.68 J 3.04 J 3.74 J ND ug/L 04/25/17 1.6 -- 10 2.85 B ND 26.9 ND ND ND 5.38 B 24.4 ND 1.94 B 8.19 B 10.2 ND 5.25 B 14.8 8.76 B 2.56 B 2.00 J ug/L 10/17/17 1.6 -- 10 ND -- 18.1 ND ND ND ND ND ND ND 3.37 J ND ND 2.85 J 2.37 J ND ND ND ug/L 04/16/18 1.6 -- 10 ND ND 14.4 ND ND ND 2.48 J ND ND ND ND ND ND ND 12.3 ND ND ND ug/L 10/16/18 1.6 10 -- ND -- 19.1 ND 3.24 J 3.43 J ND 5.86 J ND ND 10.9 ND 3.60 J 12.8 18.2 1.89 J ND ND ug/L 04/12/19 1.6 10 -- ND ND 4.04 J ND 2.20 J ND 2.49 J 86.0 1.75 J 2.69 J 12.2 4.16 J ND 4.02 J 14.9 ND ND ND ug/L 10/07/19 1.6 10 -- ND ND 10.9 ND 1.98 J ND ND 3.27 J 3.42 J ND 10.1 ND ND 1.92 J 2.78 J ND ND ND ug/L 04/20/20 1.6 10 -- ND ND 14.8 2.86 J 2.44 J 2.78 J 2.24 J 24.6 2.18 J 1.91 J 10.5 ND ND 3.20 J 2.76 J 2.39 J 1.82 J ND ug/L 10/13/20 1.6 10 -- 3.46 J 1.64 J 9.16 J 2.78 J 5.74 J ND 4.39 J 3.14 J 3.64 J ND ND 4.80 J 1.86 J ND 11.3 ND 3.54 J ND ug/L 04/28/21 1.6 10 -- ND ND ND ND ND ND ND 10.3 ND ND ND ND ND ND 2.89 J ND ND ND ug/L 10/14/21 1.6 10 -- ND ND ND 2.02 B ND ND ND ND ND ND ND ND ND ND 5.85 B ND ND 2.62 J ug/L 04/19/22 1.6 10 -- ND ND ND ND ND ND ND 15.7 ND ND ND ND ND ND 8.00 J ND ND ND u /L 10/20/22 3.2 20 -- ND ND 17.0 J ND ND ND 4.60 J ND 3.80 J ND 8.20 J ND ND ND ND ND ND ND 2of17 February 2023 TABLE 4 19131339.105 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method SWS Assessment Reporting Sample Practical Upgradient Monitoring Wells Compliance Downgradient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constituent Detection Reporting Blanks Units Date Quantitation Limit Well Limit Limit MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Lead ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 15 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 15 ug/L ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 2.0 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 1.9 -- 10 ND ND ND ND ND -- ND ND ND ND ND 5.3 J -- -- -- -- -- ND ug/L 12/05/08 1.9 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ug/L 04/17/09 1.6 -- 10 ND ND 1.7 J 3.2 J 3.3 J -- 2.5 J ND ND ND 3.1 J 10.5 -- -- -- -- -- ND ug/L 10/16/09 1.9 -- 10 ND ND 17.2 ND ND -- ND ND 5.37 J ND ND -- -- -- -- -- -- ND ug/L 04/28/10 1.9 -- 10 ND ND ND ND ND -- ND 2.41 J ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 1.9 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 1.9 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- 3.42 J ND ND ND ug/L 05/09/11 1.9 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 1.9 -- 10 ND ND ND ND ND -- 1.90 ND 1.90 1.90 ND ND ND 2.37 ND ND ND ND ug/L 04/17/12 1.9 -- 10 ND ND 3.71 J ND 2.28 J -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 1.9 -- 10 ND 2.64 J 3.47 J ND 4.26 J -- 2.11 J ND ND ND ND 3.18 J ND 2.97 J 4.22 J 3.94 J 3.63 J ND ug/L 05/02/13 1.9 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 2.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 2.1 -- 10 ND ND 4.05 J ND 2.70 J -- 2.81 J ND ND ND ND 3.49 J ND ND ND ND ND ND ug/L 10/06/14 2.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND 2.52 J ND ND ND ND ug/L 04/14/15 3.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 3.1 -- 10 ND -- ND ND ND 4.86 J ND 4.05 J ND ND ND ND ND 4.51 J ND ND ND ND ug/L 04/20/16 3.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 3.1 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND 3.52 J ND ND ND ND ND ug/L 04/25/17 3.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 3.1 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND 3.11 J ND ND ug/L 04/16/18 3.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 3.1 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 3.1 10 -- ND ND ND ND ND ND ND 6.04 J ND ND ND ND 4.86 J ND ND ND ND ND ug/L 10/07/19 3.1 10 -- ND 3.13 J 7.68 J 3.24 J 4.46 J 5.35 J 4.28 J 6.44 J ND 3.93 J ND ND ND 4.48 J ND ND 4.92 J ND ug/L 04/20/20 3.1 10 -- ND ND ND ND ND ND ND ND ND ND 4.90 J ND ND ND ND ND ND ND ug/L 10/13/20 3.1 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 3.1 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 3.1 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 3.1 10 -- ND ND ND 3.75 J ND ND ND ND ND ND ND ND 3.27 J ND 3.22 J ND ND ND u /L 10/20/22 6.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Mercury ug/L 03/01/99 -- -- 0.5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 1 ug/L ug/L 09/01/99 -- -- 0.5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 2 ug/L ug/L 03/01/00 -- -- 0.5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 0.5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 0.5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 0.5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 0.5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 0.5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 0.5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 0.5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 0.5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 0.5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 0.5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 0.5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ug/L 10/01/06 -- -- 0.5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND 0.15 J -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 12/01/08 0.11 -- 0.2 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.054 -- 0.2 ND ND 0.0541 J ND 0.144 J -- ND ND ND ND 0.239 -- -- -- -- -- -- ND ug/L 04/28/10 0.17 -- 2.0 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/11/10 0.17 -- 0.2 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.17 -- 0.2 ND ND ND ND 0.17 J -- 0.17 ND 0.17 0.17 ND ND -- -- -- -- -- ND ug/L 10/25/12 0.17 -- 0.2 ND ND ND ND 0.31 -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 09/24/13 0.17 -- 0.2 ND ND ND ND 0.2 ND ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/06/14 0.17 -- 0.2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/15 0.17 -- 0.2 ND -- ND ND 0.361 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.17 -- 0.2 ND -- ND ND 0.248 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.099 -- 0.2 ND -- ND ND 1.86 ND ND ND ND ND ND ND ND ND ND ND ND ND (verification event) ug/L 12/21/17 0.17 -- 0.2 -- -- -- -- 0.501 -- -- -- -- -- -- -- -- -- -- -- -- ND ug/L 10/16/18 0.15 0.20 -- ND -- ND ND 1.99 ND ND ND ND ND ND ND ND ND ND ND ND ND (verification event) ug/L 02/20/19 0.15 0.20 -- -- -- -- -- 0.739 -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/07/19 0.15 0.20 -- ND ND ND ND 0.314 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.15 0.20 -- ND ND ND ND 2.32 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.15 0.20 -- ND ND ND ND 0.236 ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.08 0.20 -- ND H ND H ND ND 0.31 ND ND ND ND ND ND ND ND ND ND ND ND ND Nickel ug/L 03/01/99 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 100 ug/L ug/L 09/01/99 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 50 ND ND ND ND ND -- 97 ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND 6.9 J ND 6.9 J -- 6.3 J 17.1 J ND ND 6.9 J -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND 5.9 J ND 4.3 J -- 4.2 J -- 2.5 J ND 8.4 J -- -- -- -- -- -- ND ug/L 04/29/08 2.0 -- 50 ND ND 6.7 J ND 9.5 J -- ND 6.7 J ND ND ND 15.0 J -- -- -- -- -- ND ug/L 12/01/08 1.8 -- 50 ND ND 7.5 J ND 10.3 J -- 2.1 J 33.9 J ND ND 9.1 J 8.2 J -- -- -- -- -- ND ug/L 12/05/08 1.8 -- 50 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ug/L 04/17/09 0.6 -- 50 1.1 J ND 10.7 J ND 13.6 J -- 3.0 J 2.1 J 1.3 J 0.8 J 11.6 J 22.8 J -- -- -- -- -- ND ug/L 10/16/09 1.8 -- 50 ND ND 9.15 J ND 11.6 J -- 3.42 J 40.3 J 4.46 J ND 9.71 J -- -- -- -- -- -- ND ug/L 04/28/10 1.8 -- 50 ND ND 13.2 J ND 11.2 J -- 3.86 J 36.6 J 1.96 J ND 12.0 J 10.7 J -- -- -- -- -- ND ug/L 08/02/10 1.8 -- 50 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 1.86 J ND 4.28 J ND ug/L 10/11/10 1.8 -- 50 ND ND 9.47 J ND 10.1 J -- 3.95 J 40.5 J ND ND 10.2 J 10.4 J -- -- 3.75 J 5.57 J 4.15 ND ug/L 05/09/11 1.8 -- 50 ND ND 20.2 J ND 10.9 J -- 3.66 J 9.44 J ND ND 17.7 J 11.2 J -- -- -- -- -- ND ug/L 10/12/11 1.8 -- 50 ND ND 19.5 J ND 14.2 J -- 3.80 J 63.2 1.80 1.80 20.0 J 10.5 J 8.29 J 3.25 2.89 J 2.17 J 3.30 J ND ug/L 04/17/12 1.8 -- 50 ND ND 16.7 J ND 11.0 J -- 5.40 J 9.09 J ND ND 22.7 J 8.58 J -- -- -- -- -- ND ug/L 10/25/12 1.8 -- 50 ND ND 18.0 J ND 12.4 J -- ND 44.8 J ND 2.66 J 23.4 J 11.3 J 4.38 J ND 3.34 J 1.80 2.98 ND ug/L 05/02/13 1.8 -- 50 1.94 J ND 15.0 J ND 13.3 J -- 3.53 J 2.41 J 2.06 J ND 30.7 J 9.75 J 4.89 J 1.92 J 5.09 J ND 4.08 J ND ug/L 09/24/13 1.8 -- 50 ND ND 20.8 J ND 12.5 J 25.9 J 2.37 J 41.1 J ND ND 28.9 J 10.7 J 5.33 J ND 3.41 J 2.16 J 5.19 J ND ug/L 04/24/14 1.8 -- 50 ND ND 14.5 J ND 13.6 J -- 2.82 J 2.06 J 2.30 J ND 37.1 J 6.43 J 5.22 J 8.39 J 3.79 J ND 5.89 J ND ug/L 10/06/14 1.8 -- 50 ND ND 26.2 J ND 11.7 J 25.9 J 2.99 J 54.3 4.07 J ND 37.7 J 6.97 J 3.68 J 2.62 J 2.49 J ND 9.65 J ND ug/L 04/14/15 1.8 -- 50 ND 3.35 J 24.9 J ND 16.0 J 27.9 J 7.04 J 4.44 J 2.07 J ND 33.8 J -- 4.18 J ND 3.66 J ND 5.47 J ND ug/L 10/07/15 1.8 -- 50 ND -- 27.7 J 3.06 J 12.1 J 33.4 J 2.87 J 32.5 J 4.65 ND 44.4 J 3.06 J 3.75 J 2.53 J 4.18 J ND ND ND ug/L 04/20/16 2.2 -- 50 ND ND 23.9 J ND 13.1 J 33.5 J 6.73 J 7.26 J 5.39 J ND 51.8 13.2 J 6.70 J 10.4 J 5.16 J ND 6.36 J ND ug/L 09/26/16 2.2 -- 50 ND -- 28.1 J ND 12.7 J 35.9 J 8.05 J 51.5 6.69 J ND 51.5 8.85 J 5.74 J 3.44 6.47 J ND 7.49 J ND ug/L 04/25/17 2.2 -- 50 ND ND 25.4 J ND 12.2 J 35.9 J 5.82 J ND ND ND 63.7 3.27 J 4.17 J ND 5.07 J ND ND ND ug/L 10/17/17 2.2 -- 50 6.26 J -- 25.5 J ND 10.4 J 36.9 J 5.83 J 50.9 4.20 J 9.12 J 62.6 ND 2.76 J ND 4.11 J ND 3.98 J ND ug/L 04/16/18 2.2 -- 50 ND ND 30.6 J ND 11.9 J 46.6 J 4.78 J 9.74 J ND ND 82.2 5.68 J 3.17 J 2.20 J 4.25 J ND ND ND ug/L 10/16/18 2.2 10 -- ND -- 29.0 ND 9.47 J 56.6 5.42 J 22.3 ND ND 78.9 3.79 J ND 2.53 J 22.1 2.64 J ND ND ug/L 04/12/19 2.2 10 -- ND ND 25.4 ND 9.59 B 59.0 4.40 B 2.25 B ND ND 96.2 5.40 B 4.42 B 4.58 B 6.58 B ND ND 2.78 ug/L 10/07/19 2.2 10 -- ND ND 31.7 2.31 J 8.95 J 47.1 11.6 47.3 6.96 J ND 94.2 7.45 J 3.38 J 2.59 J 8.47 J ND 3.64 J ND ug/L 04/20/20 2.2 10 -- ND ND 24.6 ND 8.21 J 42.2 3.94 J 12.5 ND ND 98.5 10.1 2.51 J ND ND ND 2.68 J ND ug/L 10/13/20 2.2 10 -- ND ND 29.9 ND 7.89 J 32.1 2.35 J 21.9 ND ND 129 4.41 J 3.64 J ND 5.98 J ND 3.20 J ND ug/L 04/28/21 2.2 10 -- ND ND 26.9 ND 8.30 J 39.1 3.23 J 4.07 J ND ND 122 10.9 2.96 J 2.28 J 3.61 J ND 3.93 J ND ug/L 10/14/21 2.2 10 -- ND ND 30.6 3.00 J 8.40 J 17.4 2.82 J 35.0 4.39 J ND 124 ND 3.96 J ND 5.99 J ND 2.41 J ND ug/L 04/19/22 2.2 10 -- ND ND 23.5 ND 5.93 J 26.9 ND ND ND ND 128 ND ND ND 2.71 J ND ND ND ug/L 10/20/22 3.3 40 -- ND ND 33.0 J 3.50 J 9.30 J 29.0 J 7.30 J 22.0 J 6.70 J ND 130 6.00 J 5.20 J 4.40 J 5.40 J ND 6.10 J ND Selenium ug/L 03/01/99 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 20 ug/L ug/L 09/01/99 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 50 ug/L ug/L 03/01/00 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND 4.0 J 3.4 J ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 2.0 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 2.7 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 3.4 -- 10 ND ND ND ND ND -- ND ND ND ND ND 3.8 J -- -- -- -- -- ND ug/L 10/16/09 2.7 -- 10 ND ND ND ND ND -- ND 6.5 J ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.83 -- 10 ND ND 16.1 J 5.04 J 4.18 J -- 2.57 J 17.3 2.09 J ND 17.0 3.19 J -- -- -- -- -- ND ug/L 08/02/10 0.83 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND 9.47 J ND ug/L 10/11/10 0.83 -- 10 1.31 J ND 9.61 J 4.27 J 4.02 J -- 2.54 J 11.6 ND ND 10.2 3.63 J -- -- -- -- -- ND ug/L 05/09/11 0.83 -- 10 1.07 J ND 29.9 6.46 J 6.00 J -- 1.91 J 4.76 J 1.08 J 1.10 J 24.7 3.38 J -- -- -- -- -- ND ug/L 10/12/11 2.7 -- 10 ND 2.80 J ND ND ND -- 2.39 J ND 0.926 J 0.83 ND 3.11 J 3.59 J 1.95 ND ND 3.57 J ND ug/L 04/17/12 0.83 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 0.83 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.91 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.91 -- 10 ND ND 1.23 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.91 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.91 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.91 -- 10 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.91 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.91 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.91 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 6.2 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 6.2 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 6.2 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 6.2 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 6.2 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 10.0 ug/L 10/07/19 6.2 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 6.2 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 6.2 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 6.2 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 6.2 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 6.2 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 10.0 20 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 3of17 February 2023 TABLE 4 19131339.105 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method SWS Assessment Reporting Sample Practical Upgradient Monitoring Wells Compliance Downgradient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constituent Detection Reporting Blanks Units Date Quantitation Limit Well Limit Limit MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Silver ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 20 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 100 ug/L ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND 2.5 J ND ND -- ND -- ND ND 2.6 J -- -- -- -- -- -- ND ug/L 04/29/08 2.0 -- 10 2.7 J 2.6 J 2.7 J ND ND -- ND ND 2.7 J 2.1 J 2.9 J ND -- -- -- -- -- ND ug/L 12/01/08 1.9 -- 10 ND ND ND ND ND -- ND ND 2.3 J ND ND ND -- -- -- -- -- ND ug/L 04/17/09 1.0 -- 10 ND ND 3.6 J 1.6 J ND -- ND ND ND ND 3.9 J ND -- -- -- -- -- ND ug/L 10/16/09 1.9 -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 1.9 -- 10 ND ND 4.47 ND ND -- ND 4.32 J ND ND 3.07 J 2.50 J -- -- -- -- -- ND ug/L 08/02/10 1.9 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 1.9 -- 10 ND ND 3.27 J ND ND -- ND ND ND ND 3.25 J ND -- -- ND ND 5.30 ND ug/L 05/09/11 1.9 -- 10 ND ND 2.84 J ND ND -- ND ND ND ND 2.28 J ND -- -- -- -- -- ND ug/L 10/12/11 1.9 -- 10 ND ND 2.91 J ND ND -- ND 3.63 J ND ND ND 3.50 J ND ND ND ND ND ND ug/L 04/17/12 1.9 -- 10 ND ND 2.68 J ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 1.9 -- 10 ND ND 3.09 J ND ND -- ND 3.04 J ND ND ND 2.72 J ND ND ND ND ND ND ug/L 05/02/13 1.9 -- 10 ND ND 2.83 J ND ND -- ND ND ND ND 2.11 J ND ND ND ND ND ND ND ug/L 09/24/13 1.9 -- 10 ND ND 2.71 J ND ND ND ND 2.61 J ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 1.9 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND 2.43 J ND ND ND ND ug/L 10/06/14 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 1.9 -- 10 ND ND 3.24 J ND ND ND ND ND ND ND 2.51 J -- ND ND ND ND ND ND ug/L 10/07/15 1.9 -- 10 2.79 J -- 7.83 J ND ND ND ND ND ND ND 5.84 J ND ND ND ND ND ND ND ug/L 04/20/16 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 1.9 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND 2.79 J ND ND ND ND ND ND ND ug/L 10/17/17 1.9 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 1.9 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 1.9 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 1.9 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 1.9 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 1.9 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 1.9 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 1.9 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 1.9 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 1.5 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Thallium ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- 14 29 ND ND ND ND -- ND -- -- -- ND NC 2L = 2 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 2 ug/L ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND 13 -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 10 J ND ND ND ND -- 10 J ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND 16 11 ND -- ND 16 ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND 23 ND ND -- ND 25 ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- 0.041 J 0.045 J 0.045 J 0.04 J 0.051 J -- 0.047 J -- 0.047 J 0.037 J 0.036 -- -- -- -- -- -- ND ug/L 04/29/08 0.036 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.036 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/05/08 4.8 -- 5.5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ug/L 04/17/09 0.036 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.11 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.11 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.11 -- 5.5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.11 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 05/09/11 0.11 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.11 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND 0.154 J ND ND ND ND ND ug/L 04/17/12 0.11 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 0.11 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.11 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.11 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.23 J ND ug/L 04/14/15 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.11 -- 5.5 -- -- ND ND ND ND ND ND ND ND ND -- ND ND -- ND -- ND ug/L 04/20/16 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.11 -- 5.5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.11 -- 5.5 0.239 J 0.168 J ND 0.301 J 0.321 J ND 0.288 J 0.200 J 0.173 J 0.180 J ND ND 0.265 J 0.221 J 0.191 J 0.138 J 0.200 J ND ug/L 10/17/17 0.11 -- 5.5 0.184 J -- 0.327 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.55 5.00 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.55 5.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.22 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.22 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.22 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.22 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.22 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 0.22 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/20/22 0.26 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Tin ug/L 03/01/99 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND IMAC = 2000 ug/L ug/L 09/01/99 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 100 ND ND ND ND ND -- 100 ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 12/01/08 2.1 -- 100 ND ND ND ND ND -- ND 2.90 J 2.5 J ND ND ND -- -- -- -- -- ND ug/L 10/16/09 2.1 -- 100 4.36 J ND 7.05 J 5.20 J 4.66 J -- 5.58 J 7.96 J 6.03 J ND 3.37 J -- -- -- -- -- -- ND ug/L 04/28/10 2.1 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/11/10 2.1 -- 100 ND ND 4.57 J ND ND -- 2.34 J 6.23 J ND ND 2.51 J ND -- -- ND ND ND ND ug/L 10/12/11 2.1 -- 100 3.04 J ND 11.3 J 3.62 J 4.23 J -- 3.58 J 12.8 J 2.84 J ND 11.8 J 4.34 J -- -- -- -- -- ND ug/L 10/25/12 2.1 -- 100 3.92 J 2.10 8.91 J 4.31 J 3.95 J -- 5.32 J 8.90 J ND 4.44 J 4.21 J 4.48 J -- -- -- -- -- ND ug/L 09/24/13 2.1 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/06/14 2.1 -- 100 ND ND 4.80 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/15 2.4 -- 100 -- -- ND ND ND ND ND ND ND ND ND -- ND ND -- ND -- ND ug/L 09/26/16 2.4 -- 100 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 2.4 -- 100 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 2.9 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND 3.23 J ND ND ug/L 10/07/19 2.9 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 2.9 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 2.9 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND 3.23 J ND ND ND u /L 10/20/22 11 50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Vanadium ug/L 03/01/99 -- -- 40 ND ND 62 ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 7ug/L ug/L 09/01/99 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 40 ND ND 76 ND 46 -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 40 ND ND 44 ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ug/L 10/01/06 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- 3.4 J ND ND ND ND -- ND ND ND 14.5 J ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- 2.3 B ND ND ND ND -- ND -- ND 14.2 B ND -- -- -- -- -- -- ND ug/L 04/29/08 1.0 -- 25 4.6 J 1.6 J ND ND ND -- 9.1 J 4.1 J 1.8 J 15.4 J ND ND -- -- -- -- -- ND ug/L 12/01/08 1.4 -- 25 2.3 J ND ND ND ND -- ND ND ND 8.5 J ND ND -- -- -- -- -- ND ug/L 12/05/08 1.4 -- 25 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 04/17/09 0.7 -- 25 4.0 J ND ND 2.2 J 6.4 J -- 6.8 J ND ND 10.0 J 2.1 J 50.1 -- -- -- -- -- ND ug/L 10/16/09 1.4 -- 25 3.92 J ND ND 4.06 J 3.27 J -- 1.65 J 2.02 J 6.2 J 9.44 J 6.24 J -- -- -- -- -- -- ND ug/L 04/28/10 1.4 -- 25 3.65 J ND ND 3.66 J 4.29 J -- 5.76 J ND ND 8.15 J 2.02 J ND -- -- -- -- -- ND ug/L 08/02/10 1.4 -- 25 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 9.3 J 3.15 J 2.14 J ND ug/L 10/11/10 1.4 -- 25 3.81 J ND ND 2.11 J 2.29 J -- 3.30 J 4.32 J ND 7.99 J 1.65 J 2.42 J -- -- 18.1 J 56.6 2.65 ND ug/L 05/09/11 1.4 -- 25 3.84 J ND ND 3.11 J ND -- 6.65 J ND ND 9.54 J 1.80 J ND -- -- -- -- -- ND ug/L 10/12/11 1.4 -- 25 3.23 J ND ND 2.61 J ND -- 5.40 J 2.33 J ND 7.82 J ND ND 8.23 J 9.48 3.91 J 12.8 J 2.57 J ND ug/L 04/17/12 1.4 -- 25 3.88 J ND ND 1.93 J 2.72 J -- 3.04 J ND ND 8.14 J ND ND -- -- -- -- -- ND ug/L 10/25/12 1.4 -- 25 4.23 J 1.40 ND 2.30 J 1.90 J -- 2.36 J 2.99 J 8.02 J ND 1.52 J ND ND 4.50 J 8.05 J 5.40 J 1.55 ND ug/L 05/02/13 1.4 -- 25 6.85 J ND ND 2.64 J 4.49 J -- 6.98 J 2.61 J ND 6.26 J 2.68 J 3.28 J ND ND 8.48 5.09 ND ND ug/L 09/24/13 1.4 -- 25 3.27 J ND ND 2.47 J 2.87 J 1.47 J 1.67 J ND ND 4.93 J ND 8.37 J 3.08 J 1.98 J 1.81 J 21.2 J ND ND ug/L 04/24/14 1.4 -- 25 3.87 J ND ND 2.65 J ND -- 3.81 J ND ND 4.90 J 2.18 J 7.66 J ND 1.71 J 3.93 J 6.14 J ND ND ug/L 10/06/14 1.4 -- 25 3.32 J ND ND 2.28 J ND 1.87 J ND ND ND 3.45 J 2.91 J 3.42 J ND 3.30 J 13.1 J 7.07 J ND ND ug/L 04/14/15 1.4 -- 25 3.28 J ND ND ND 6.41 J ND ND ND ND 2.05 J ND -- ND ND 2.22 J 14.0 J ND ND ug/L 10/07/15 1.4 -- 25 4.71 J -- ND 12.8 J ND 2.52 J 9.63 J 3.18 J ND 2.32 J 1.92 J 12.8 J ND ND 5.44 J 3.74 J 3.59 J ND ug/L 04/20/16 1.4 -- 25 4.66 J ND ND 3.04 J 4.60 J 2.76 J 2.82 J 1.75 J ND 3.07 J 3.75 J 14.9 J ND ND 2.25 J 5.60 J ND ND ug/L 09/26/16 1.4 -- 25 3.74 J -- ND 2.08 J ND 1.89 J ND ND ND 1.61 J 1.96 J 2.07 J ND ND 4.92 J ND ND ND ug/L 04/25/17 1.4 -- 25 6.06 J ND ND ND 1.48 J 2.17 J 12.5 J 6.09 J ND 1.75 J 2.76 J 13.9 J ND ND 12.4 J 12.0 J 7.32 J ND ug/L 10/17/17 1.4 -- 25 4.84 J -- 3.40 J 2.53 J ND 3.08 J 5.83 J 7.31 J ND ND 2.51 J 4.72 J 2.14 J 2.91 J 7.44 J 4.16 J ND ND ug/L 04/16/18 1.4 -- 25 3.67 J 2.04 J ND ND ND 2.83 J 5.83 J ND ND ND 2.15 J 5.90 J ND ND 4.33 J 2.44 J 1.96 J ND ug/L 10/16/18 1.4 10 -- 4.20 J -- ND ND 2.81 J 4.25 J 1.83 J 2.11 J ND ND ND 3.93 J 5.52 J 5.28 J 5.17 J 1.68 J ND ND ug/L 04/12/19 1.4 10 -- 5.22 J ND ND ND 2.08 J 3.54 J 4.30 J ND ND ND 3.21 J 5.77 J ND 1.74 J 2.15 J 2.62 J ND ND ug/L 10/07/19 1.4 10 -- 4.93 J ND ND ND ND 2.61 J ND ND ND ND 2.23 J 3.87 J ND 1.40 J 2.48 J 2.27 J ND ND ug/L 04/20/20 1.4 10 -- 4.15 J ND ND 1.79 J 1.81 J 3.09 J 2.56 J ND ND ND 3.66 J 1.90 J ND ND 1.84 J 2.53 J ND ND ug/L 10/13/20 1.4 10 -- 3.56 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 1.4 10 -- 3.57 J ND ND ND ND ND 3.81 J ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 1.4 10 -- 4.05 J ND ND ND ND ND 5.09 J ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 1.4 10 -- 3.69 J ND ND ND ND ND 6.21 J ND ND ND ND ND ND ND ND ND ND ND ug/L 10/20/22 1.0 10 -- 4.70 J ND 4.10 J 2.00 J 1.20 J 2.70 J 11.0 2.00 J 1.10 J ND 3.20 J 5.70 J ND 1.70 J 3.00 J ND ND ND 4of17 February 2023 TABLE 4 19131339.105 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method SWS Assessment Reporting Sample Practical Upgradient Monitoring Wells Compliance Downgradient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constituent Detection Reporting Blanks Units Date Quantitation Limit Well Limit Limit MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Zinc ug/L 03/01/99 -- -- 50 ND ND 62 ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 1000 ug/L ug/L 09/01/99 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 5000 ug/L ug/L 03/01/00 -- -- 50 ND ND 16 ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 50 ND ND 52 ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- 2.2 J ND ND ND 3.0 J -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- 2.5 J ND ND 1.3 J 2.1 J -- 69.7 -- 2.3 J ND 1.0 -- -- -- -- -- -- ND ug/L 04/29/08 1.0 -- 10 8.7 J 1.3 J ND ND 2.5 J -- 2.5 J 30 ND ND ND 3.5 J -- -- -- -- -- ND ug/L 12/01/08 3.8 -- 10 7.8 J ND ND ND ND -- ND ND ND ND ND 20.5 -- -- -- -- -- ND ug/L 04/17/09 3.4 -- 10 9.4 J ND 5.1 J ND 7.1 J -- 4.2 J 5.7 J 3.7 J ND 4.7 J 37.5 -- -- -- -- -- ND ug/L 10/16/09 3.8 -- 10 7.66 J ND ND 8.88 J 7.31 J -- ND 4.87 J 60.4 ND 4.03 J -- -- -- -- -- -- ND ug/L 04/28/10 3.8 -- 10 7.20 J ND 5.77 J ND 6.28 J -- ND 4.08 J 6.49 J ND ND ND -- -- -- -- -- ND ug/L 08/02/10 3.8 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 96.8 5.90 J 7.60 J ND ug/L 10/11/10 3.8 -- 10 ND 8.16 J ND ND ND -- ND ND ND ND ND ND -- -- 409 35.4 8.07 ND ug/L 05/09/11 3.8 -- 10 4.92 J 7.58 J 5.52 J ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 3.8 -- 10 ND ND 5.46 J ND ND -- ND ND ND ND ND ND 5.78 J 62.0 260 9.04 J 8.37 J ND ug/L 04/17/12 3.8 -- 10 4.48 J ND 3.95 J ND 5.80 J -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 3.8 -- 10 11.1 ND 5.48 J ND ND -- ND 8.58 J ND ND 4.57 J 4.94 J 3.91 J 29.8 272 4.39 J 5.97 ND ug/L 05/02/13 3.8 -- 10 7.37 J 4.11 J ND ND 4.31 J -- 4.60 J ND ND ND ND ND ND 23.3 676 5.54 4.19 ND ug/L 09/24/13 3.8 -- 10 ND ND ND ND 5.36 J 4.03 J 4.85 J ND ND ND ND 10.2 ND 20.0 438 11.8 7.82 J ND ug/L 04/24/14 3.8 -- 10 ND ND 4.33 J ND ND -- 11.4 ND ND ND ND 5.56 J 8.42 J 350 635 9.92 J 4.21 J ND ug/L 10/06/14 3.8 -- 10 ND 7.21 J 16.5 4.05 J 4.79 J 4.79 J 10.7 ND 4.39 J ND 4.60 J 5.60 J 4.52 J 48.5 58.2 6.33 J 12.3 ND ug/L 04/14/15 3.8 -- 10 12.3 9.44 J ND ND 8.67 J 6.39 J 31.1 4.49 J 6.85 J 3.80 3.80 -- ND 26.5 529 11.2 4.38 J ND ug/L 10/07/15 3.8 -- 10 4.19 J -- ND 7.21 J ND ND 7.74 J 5.12 J ND ND ND 7.21 J ND 20.2 280 ND 12.1 ND ug/L 04/20/16 4.4 -- 10 15.1 ND ND ND ND ND 13.7 9.56 J ND ND ND 9.19 J ND 350 588 39.2 ND ND ug/L 09/26/16 4.4 -- 10 4.65 J -- ND ND 5.23 J ND 7.93 J 8.75 J ND 6.36 J 14.8 ND ND 58.0 52.6 ND 5.91 J ND ug/L 04/25/17 4.4 -- 10 5.06 J 5.09 J ND ND 5.84 J ND 11.0 8.99 J ND ND ND 7.84 J ND 40.6 730 ND 5.31 J ND ug/L 10/17/17 4.4 -- 10 4.64 J -- ND ND ND ND 4.74 J 6.53 J ND ND ND ND 5.21 J 24.4 67.5 ND 7.07 J ND ug/L 04/16/18 4.4 -- 10 6.74 J 5.94 J 4.67 J ND ND ND 11.8 4.98 J ND ND ND 6.46 J ND 48.3 388 ND ND ND ug/L 10/16/18 4.4 10 -- 6.31 J -- 28.2 ND 5.80 J ND 11.7 7.28 J ND ND ND ND 14.0 61.1 479 7.96 J ND ND ug/L 04/12/19 4.4 10 -- 13.0 ND 9.25 J ND 15.8 ND 16.5 68.9 ND ND ND 4.53 J 5.37 J 78.1 899 ND ND ND ug/L 10/07/19 4.4 10 -- 8.73 J 6.46 J 6.80 J 6.48 J 9.23 J 6.44 J 22.4 9.94 J 9.82 J 22.3 10.6 ND ND 31.1 154 7.03 J 7.29 J ND ug/L 04/20/20 4.4 10 -- ND ND ND 4.71 J ND ND 17.1 21.1 ND ND ND 5.38 J ND 50.2 394 ND ND ND ug/L 10/13/20 4.4 10 -- ND ND ND 4.79 J 5.73 J ND 7.63 J 24.6 ND ND ND 41.6 ND 19.5 376 ND ND ND ug/L 04/28/21 4.4 10 -- ND ND ND ND 6.55 J ND 5.17 J 18.9 ND ND ND 20.6 ND 79.4 517 ND 4.46 J ND ug/L 10/14/21 4.4 10 -- 6.49 J ND ND 13.5 ND ND 17.6 5.78 J 5.69 J ND ND ND ND 14.9 117 ND ND ND ug/L 04/19/22 4.4 10 -- ND ND ND ND 5.22 J ND 10.5 9.95 J ND ND ND 7.28 J ND 32.7 603 ND ND ND u /L 10/20/22 8.7 20 -- ND ND ND ND ND ND 13 J ND ND ND ND ND ND 9.40 J 48.0 ND ND ND Acetone ug/L 03/01/99 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 6000 ug/L ug/L 09/01/99 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- 3.8 B 5.5 B 18 B 1.6 J ND -- 12 J -- ND ND 11 B -- -- -- -- -- -- ND ug/L 04/29/08 0.62 -- 100 0.62 5.9 J 5.5 J ND ND -- 3.4 J 4.8 J ND ND ND 7.4 J -- -- -- -- -- ND ug/L 12/01/08 1.5 -- 100 ND ND ND 7.3 J ND -- ND 10 J ND ND ND 6.1 J -- -- -- -- -- ND ug/L 10/16/09 1.5 -- 100 ND ND ND ND ND -- ND 20 J 2.4 J ND ND -- -- -- -- -- -- ND ug/L 04/28/10 1.5 -- 100 ND ND ND ND ND -- ND 5.4 J 2.0 J ND ND ND -- -- -- -- -- ND ug/L 08/02/10 1.5 -- 100 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND 3 J ND ND ug/L 10/11/10 1.5 -- 100 ND ND ND 5.2 J ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 1.2 -- 100 ND ND ND ND ND -- ND ND ND ND ND 16 J -- -- -- -- -- ND ug/L 10/12/11 1.2 -- 100 ND ND ND ND ND -- ND ND ND ND ND 5.1 J ND ND ND ND ND ND ug/L 04/17/12 1.2 -- 100 ND ND ND 5.8 J ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 1.2 -- 100 ND ND 3.3 J ND ND -- ND 9.8 J ND ND ND 5.4 J ND ND ND ND ND ND ug/L 05/02/13 1.2 -- 100 ND ND ND ND ND -- ND ND ND ND ND 28 J ND ND ND ND ND ND ug/L 09/24/13 1.2 -- 100 ND ND 4 J ND ND 4.7 J ND 7.1 J ND 2.2 J ND ND ND ND ND ND ND ND ug/L 04/24/14 1.2 -- 100 ND ND ND ND ND -- ND ND ND ND ND 36 J ND ND ND ND ND ND ug/L 10/06/14 1.2 -- 100 ND ND ND ND ND ND ND 16 J ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 1.2 -- 100 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 1.2 -- 100 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 1.2 -- 100 ND 1.2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1.2 ND ug/L 09/26/16 10 -- 100 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 10 -- 100 16 B 20 B 19 B 21 B 12 B 33 B 14 B ND 11 B 11 B 28 B 33 J 16 B 15 B 20 B 14 B ND 28 J ug/L 10/17/17 10 -- 100 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 10 -- 100 ND ND ND ND ND ND ND 44 J ND ND ND 14 J ND ND ND ND ND ND ug/L 10/16/18 10 20 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 10 20 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 10 20 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 10 20 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 10 20 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 10 20 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 10 20 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 26 ug/L 04/19/22 10 20 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 10 20 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Benzene ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 1 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 5 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug L 09/26/07 -- -- -- ND ND 0.77 J 1.5 ND -- ND -- ND ND ND -- -- -- N D ug/L 04/29/08 0.2 -- 1 ND ND ND 1.8 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.2 -- 1 ND ND 1.1 1.6 0.52 J -- ND 2.9 ND ND ND ND -- -- -- -- -- ND ug/L 02/13/09 0.2 -- 1 -- -- -- -- -- -- -- 1.8 -- -- -- -- -- -- -- -- -- ND ug/L 02/13/09 0.2 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 04/17/09 0.2 -- 1 ND ND 0.7 J 1.4 ND -- ND ND 0.42 J ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.2 -- 1 ND ND 1.4 1.9 0.7 J -- ND 1.7 ND ND ND -- -- -- -- -- -- N D ug/L 04/28/10 0.05 -- 1 ND ND 1.1 1.2 0.80 J -- ND 1.6 0.64 J ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.2 -- 1 -- ND 1.4 0.88 J -- -- -- -- ND ND -- -- -- ND ND ND ND ND ug/L 10/11/10 0.2 -- 1 ND ND 1.2 0.67 J 0.96 J -- ND 2.2 ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.68 -- 1 ND ND 0.78 J ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.68 -- 1 ND ND 0.98 J ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.15 -- 1 ND ND 0.91 J ND 1.1 -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.15 -- 1 ND ND 1.5 ND 1.4 -- ND 2.3 ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.15 -- 1 ND ND 0.45 J ND 1.3 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.15 -- 1 ND ND 1.1 ND 1.3 0.62 J ND 1.6 ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.15 -- 1 ND ND ND ND 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.15 -- 1 ND ND 1.1 ND 1.1 0.41 J ND 2.0 ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.15 -- 1 ND ND 0.73 J ND 1.5 0.67 J ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.15 -- 1 ND -- 1.2 ND 1.3 0.73 J ND 1.4 ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.15 -- 1 ND ND 0.78 J ND 1.4 0.57 J ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.15 -- 1 ND -- ND ND ND 0.67 J ND 2.1 ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.15 -- 1 ND ND ND ND 1.4 0.78 J ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.15 -- 1 ND -- 1.8 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.15 -- 1 ND ND ND ND 1.2 0.67 J ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.15 1.0 -- ND -- ND ND 1.1 0.60 J ND 0.69 J ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.15 1.0 -- ND ND ND ND 0.93 J 0.45 J ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.15 1.0 -- ND ND 1.5 ND 0.84 J 0.54 J ND 1.2 ND ND 0.32 J ND ND ND ND ND ND ND ug/L 04/20/20 0.15 1.0 -- ND ND ND ND 0.62 J ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.15 1.0 -- ND ND 0.58 J ND 0.54 J 0.61 J ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.15 1.0 -- ND ND ND ND ND ND ND ND ND ND 0.62 J ND ND ND ND ND ND ND ug/L 10/14/21 0.15 1.0 -- ND ND 1.0 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 0.15 1.0 -- ND ND ND ND ND ND ND ND ND ND 0.87 J ND ND ND ND ND ND ND ug/L 10/20/22 0.15 1.0 -- ND ND 1.3 ND ND ND ND ND ND ND 0.54 J ND ND ND ND ND ND ND Carbon Tetrachloride ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 0.3 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 5 ug/L ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.35 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.38 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.38 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.38 -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.38 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.38 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND N D ND N D ug/L 10/11/10 0.38 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.69 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.69 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.17 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.17 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.17 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.17 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.17 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.17 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.17 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.17 -- 1 ND -- 0.47 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.17 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.17 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.17 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.17 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.17 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.17 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/20/22 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5of17 February 2023 TABLE 4 19131339.105 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method SWS Assessment Reporting Sample Practical Upgradient Monitoring Wells Compliance Downgradient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constituent Detection Reporting Blanks Units Date Quantitation Limit Well Limit Limit MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Chlorobenzene ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 50 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 100 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND 2.5 J ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND 1.1 J 0.49 J ND -- 0.50 J -- ND ND 2.0 J -- -- -- -- -- -- ND ug/L 04/29/08 0.27 -- 3 ND ND ND 0.52 J ND -- ND ND ND ND 2.2 J ND -- -- -- -- -- ND ug/L 12/01/08 0.27 -- 3 ND ND 1.8 J 0.54 J ND -- ND 4.7 ND ND 1.9 J ND -- -- -- -- -- ND ug/L 04/17/09 0.27 -- 3 ND ND 1.0 J 0.49 J ND -- ND ND ND ND 2.0 J ND -- -- -- -- -- ND ug/L 10/16/09 0.27 -- 3 ND ND 2.9 J 0.78 J ND -- ND 5.0 ND ND 2.1 J -- -- -- -- -- -- ND ug/L 04/29/10 0.069 -- 3 -- ND 1.4 J 0.48 J -- -- -- -- ND ND -- -- -- ND -- -- -- ND ug/L 08/02/10 0.27 -- 3 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.27 -- 3 ND ND 3.2 0.74 J ND -- ND 7.4 ND ND 2.8 J ND -- -- ND ND ND ND ug/L 05/09/11 0.74 -- 3 ND ND 1.2 J 0.78 J ND -- ND ND ND ND 2.3 J ND -- -- -- -- -- ND ug/L 10/12/11 0.74 -- 3 ND ND ND 0.99 J ND -- ND ND ND ND 2.3 J ND ND ND ND ND ND ND ug/L 04/17/12 0.17 -- 3 ND ND 2.0 J 0.51 J ND -- ND 0.71 J ND ND 2.5 J ND -- ND ND ND ND ND ug/L 10/25/12 0.17 -- 3 ND ND 3.5 0.74 J ND -- ND 5.7 ND ND 1.8 J ND ND ND ND ND ND ND ug/L 05/02/13 0.17 -- 3 ND ND 1.4 J 0.88 J ND -- ND ND ND ND 2.4 J ND ND ND ND ND ND ND ug/L 09/24/13 0.17 -- 3 ND ND 2.9 J 0.89 J ND 2.0 J ND 4.3 ND ND 2.0 J ND ND 0.52 J ND ND ND ND ug/L 04/24/14 0.17 -- 3 ND ND 3.0 1.0 J ND -- ND ND ND ND 2.2 J ND ND ND ND ND ND ND ug/L 10/06/14 0.17 -- 3 ND ND 4.3 0.72 J 0.45 J 1.5 J ND 5.8 ND ND 2.2 J ND ND 0.62 J ND ND ND ND ug/L 04/14/15 0.17 -- 3 ND ND 2.0 J 0.63 J ND 2.4 J ND ND ND ND 1.7 J -- ND ND ND ND ND ND ug/L 10/07/15 0.17 -- 3 ND -- 3.4 ND ND 2.8 J ND 3.6 ND ND 1.9 J ND ND 0.60 J ND ND ND ND ug/L 04/20/16 0.17 -- 3 ND ND 3.3 0.87 J ND 2.5 J ND 0.73 J ND ND 2.0 J ND ND ND ND ND ND ND ug/L 09/26/16 0.17 -- 3 ND -- 4.3 ND ND 2.7 J ND 6.4 ND ND ND ND ND 0.40 J ND ND ND ND ug/L 04/25/17 0.17 -- 3 ND ND 2.0 J 0.87 J ND 3.4 ND ND ND ND 2.2 J ND ND 0.45 J ND ND ND ND ug/L 10/17/17 0.17 -- 3 ND -- ND 1.2 J ND 3.8 ND 7.5 ND ND 2.5 J ND ND 0.60 J ND ND ND ND ug/L 04/16/18 0.17 -- 3 ND ND 1.9 J 0.97 J ND 3.4 ND 0.82 J ND ND 1.8 J ND ND ND ND ND ND ND ug/L 10/16/18 0.17 1.0 -- ND -- 1.1 0.85 J ND 3.6 ND 2.5 ND ND 1.9 ND ND ND ND ND ND ND ug/L 04/12/19 0.17 1.0 -- ND ND 2.9 0.87 J ND 3.5 ND ND ND ND 1.9 ND ND ND ND ND ND ND ug/L 10/07/19 0.17 1.0 -- ND ND 6.1 0.88 J 0.23 J 3.2 ND 5.1 ND ND 1.9 ND ND 0.41 J ND ND ND ND ug/L 04/20/20 0.17 1.0 -- ND ND 3.0 0.63 J ND 2.5 ND 1.1 ND ND 1.3 ND ND ND ND ND ND ND ug/L 10/13/20 0.17 1.0 -- ND ND 2.8 0.85 J ND 3.2 ND 3.0 ND ND 1.6 ND ND 0.52 J ND ND ND ND ug/L 04/28/21 0.17 1.0 -- ND ND 1.7 0.69 J ND 1.6 ND ND ND ND 1.9 ND ND ND ND ND ND ND ug/L 10/14/21 0.17 1.0 -- ND ND 4.6 ND ND 2.1 ND 3.7 ND ND 1.2 ND ND ND ND ND ND ND ug/L 04/19/22 0.17 1.0 -- ND ND 3.1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.17 1.0 -- ND ND 5.9 ND ND 1.7 ND 5.8 ND ND 1.4 ND ND ND ND 0.55 J ND ND Chloroethane ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 3000 ug/L ug/L 09/01/99 -- -- 10 ND ND 33 ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 10 ND ND 16 ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND 22 ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND 24 ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND 2.8 J ND ND -- 1.6 J -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.3 -- 10 ND ND ND ND 1.8 J -- ND ND ND ND 1.6 J ND -- -- -- -- -- ND ug/L 12/01/08 0.3 -- 10 ND ND 3.1 J ND 2.8 J -- ND ND ND ND 1.6 J ND -- -- -- -- -- ND ug/L 04/17/09 0.3 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.3 -- 10 ND ND 1.7 J 0.61 J ND -- ND 0.3 ND ND 0.3 -- -- -- -- -- -- ND ug/L 04/28/10 0.18 -- 10 ND ND 0.95 J ND 1.6 J -- ND ND ND ND 0.70 J ND -- -- -- -- -- ND ug/L 08/02/10 0.3 -- 10 -- ND 1.5 J ND -- -- -- -- ND ND -- -- -- 0.46 J ND ND ND ND ug/L 10/11/10 0.3 -- 10 ND ND 1.6 J 0.57 J 1.6 J -- ND ND ND ND 0.8 J ND -- -- ND ND ND ND ug/L 05/09/11 0.75 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.75 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.23 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.23 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.23 -- 10 ND ND ND ND 2.1 J -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.23 -- 10 ND ND ND 0.47 J ND ND ND ND ND ND ND ND ND 0.81 J ND ND ND ND ug/L 04/24/14 0.23 -- 10 ND ND ND ND 1.8 J -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.23 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.23 -- 10 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.23 -- 10 ND -- 0.94 J ND 1.5 J 1.2 J ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.23 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.23 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.23 -- 10 ND ND ND ND 0.98 J ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.23 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.23 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.23 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Chloroform ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- NC 2L = 70 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- EPA MCL = 80 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.2 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.2 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.2 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/16/09 0.2 -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.2 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 08/02/10 0.2 -- 5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.2 -- 5 ND ND ND ND ND __ ND ND ND ND ND ND __ __ ND ND ND ND ug L 05/09/11 0.7 -- 5 ND ND ND ND ND __ ND ND ND ND ND ND __ __ __ __ __ ND ug/L 10/12/11 0.7 -- 5 ND ND ND ND ND __ ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.18 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.18 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.18 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.18 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.18 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.18 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.18 -- 5 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.18 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.18 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.18 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.18 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.18 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.18 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.18 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.18 1.0 -- ND 0.67 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.18 1.0 -- ND 0.63 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.18 1.0 -- ND 0.69 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.18 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.18 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.18 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 0.18 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.18 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1,2-Dichlorobenzene ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 20 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 600 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND 0.32 J ND ND -- ND 0.41 J ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND 0.48 J ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.27 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.27 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.27 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.27 -- 5 ND ND ND ND ND -- ND 0.47 J ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.052 -- 5 ND ND ND ND ND -- ND 0.43 J ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.27 -- 5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.27 -- 5 ND ND 0.43 J ND ND -- ND 0.51 J ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.11 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.11 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.19 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.19 -- 5 ND ND 0.41 J ND ND -- ND 0.5 J ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.19 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.19 -- 5 ND ND ND ND ND ND ND 0.5 J ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.19 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.19 -- 5 ND ND 0.61 J ND ND ND ND 0.46 J ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.19 -- 5 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.19 -- 5 ND -- 0.46 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.19 -- 5 ND ND 0.55 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.19 -- 5 ND -- 0.57 J ND ND ND ND 0.55 J ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.19 -- 5 ND ND 0.44 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.19 -- 5 ND -- 1.0 J ND ND ND ND 0.72 J ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.19 -- 5 ND ND 0.41 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.19 1.0 -- ND -- 0.57 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.19 1.0 -- ND ND 0.55 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.19 1.0 -- ND ND 0.87 J ND ND ND ND 0.38 J ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.19 1.0 -- ND ND 0.54 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.19 1.0 -- ND ND 0.44 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.19 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.19 1.0 -- ND ND 0.76 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 0.19 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.19 1.0 -- ND ND 1.10 ND ND ND ND 0.46 J ND ND ND ND ND ND ND ND ND ND 6of17 February 2023 TABLE 4 19131339.105 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method SWS Assessment Reporting Sample Practical Upgradient Monitoring Wells Compliance Downgradient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constituent Detection Reporting Blanks Units Date Quantitation Limit Well Limit Limit MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 1,4-Dichlorobenzene ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND 6.4 ND ND ND ND -- ND -- -- -- ND NC 2L = 6 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 75 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND 5.0 ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND 6.0 ND ND -- ND 7.0 ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND 3.3 ND ND 0.89 J -- -- -- -- -- -- ND ug/L 09/26/07 -- -- ND ND 5.0 ND ND -- 0.93 J -- ND ND 0.90 J -- -- -- -- -- -- ND ug/L 04/29/08 0.20 -- 1 ND ND ND ND ND -- ND ND ND ND 0.73 J ND -- -- -- -- -- ND ug/L 12/01/08 0.38 -- 1 ND ND ND ND ND -- ND ND ND ND 0.59 J ND -- -- -- -- -- ND ug/L 02/13/09 0.38 -- 1 -- -- -- -- -- -- -- 4.1 -- -- -- -- -- -- -- -- -- ND ug/L 04/17/09 0.38 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.38 -- 1 ND ND 0.67 J ND -- ND 3.8 ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.10 -- 1 ND ND 0.61 J ND -- ND 3.4 0.53 J ND 0.55 J ND -- -- -- -- -- ND ug/L 08/02/10 0.38 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.38 -- 1 ND ND 7.5 0.54 J ND -- 0.5 J 4.7 ND ND 0.56 J ND -- -- ND ND ND ND ug/L 05/09/11 0.79 -- 1 ND ND 4.0 0.87 J ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.79 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.19 -- 1 ND ND 4.6 0.55 J ND -- ND 0.51 J 0.42 J ND 0.52 J ND -- ND ND ND ND ND ug/L 10/25/12 0.19 -- 1 ND ND 7.7 0.94 J ND -- ND 4.8 ND ND 0.44 J ND ND ND ND ND ND ND ug/L 05/02/13 0.19 -- 1 ND ND 3.4 1.2 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.19 -- 1 ND ND 4.3 1.5 ND 0.87 J ND 3.2 ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.19 -- 1 ND ND 5.6 2.0 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.19 -- 1 ND ND 8.2 1.3 ND 0.96 J ND 3.8 ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.19 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.19 -- 1 ND -- 7.6 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.19 -- 1 ND ND 7.9 2.5 ND 1.0 ND 0.72 J ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.19 -- 1 ND -- ND 2.2 ND 1.2 ND 4.3 ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.19 -- 1 ND ND 5.3 3.0 0.55 J 1.6 ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.19 -- 1 ND -- 16 3.3 0.57 J 1.4 ND 5.9 ND ND ND ND ND 0.40 J ND ND ND ND ug/L 04/16/18 0.19 -- 1 ND ND 6.5 3.1 0.53 J 1.5 ND 0.81 J ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.19 1.0 -- ND -- 9.7 3.2 0.48 J 1.6 ND 2.3 ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.19 1.0 -- ND ND 7.9 3.3 ND 1.1 ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.19 1.0 -- ND ND 14 3.3 0.35 J 1.2 ND 3.6 ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.19 1.0 -- ND ND 7.5 2.5 ND 0.76 J ND 1.1 ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.19 1.0 -- ND ND 6.7 3.0 ND 1.4 ND 2.7 ND ND ND ND ND 0.43 J ND ND ND ND ug/L 04/28/21 0.19 1.0 -- ND ND 8.7 2.4 ND 0.66 J ND ND ND ND ND ND ND ND ND 0.44 J ND ND ug/L 10/14/21 0.19 1.0 -- ND ND 11 ND ND ND ND 3.8 ND ND ND 2.0 ND ND ND ND ND ND ug/L 04/19/22 0.19 1.0 -- ND ND 9.2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/20/22 0.19 1.0 -- ND ND 15 2.5 ND 0.83 J ND 5.0 ND ND ND ND ND ND ND 1.1 ND ND Dichlorodifloromethane ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 1000 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND 12 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND 5.8 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND 5.8 ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND 1.5 J ND -- ND -- 0.45 J ND ND -- -- -- -- -- -- ND ug/L 12/01/08 0.38 -- 5 ND ND ND 0.70 J ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.38 -- 5 ND ND ND 0.99 J ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/11/10 0.38 -- 5 ND ND ND 0.50 J ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.56 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 0.2 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 09/24/13 0.2 -- 5 ND ND ND ND 0.53 J ND ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/06/14 0.2 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/15 0.2 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.2 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.2 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.2 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.2 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.2 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.2 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.2 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1, 1 -Dichloroethane ug/L 03/01/99 -- -- 5 ND ND ND 13 ND -- 26 ND 33 ND 7.9 ND -- ND -- -- -- ND NC 2L = 6 ug/L ug/L 09/01/99 -- -- 5 ND ND ND 9.2 ND -- 13 ND 12 ND 7.4 -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND 7.5 ND 5.1 ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND 6.3 ND -- 11 ND 5.9 ND 5.3 -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- 10 ND 9.7 ND 5.0 ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND 9.5 7.0 -- 11 ND 69 ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND 9.1 ND -- 8.7 ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- 6.3 ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND 7.8 ND -- 5.8 ND 5.6 ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- 5.5 ND 6.9 ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND 20 5.4 -- 7.7 ND ND 5.7 ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND 12 6.0 -- 5.0 ND 9.0 5.0 ND ND -- 25 -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND 17 6.0 -- 5.0 ND 9.0 ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND 16 7.3 -- ND ND ND ND ND -- -- -- -- -- -- ND ug L 04/12/07 -- -- -- ND ND 1.7 J -- 2.0 J 0.09 2.6 J 2.7 J 1.2 J -- -- -- -- ND ug L 09/26/07 -- -- -- ND ND 2.8 J 14 8.0-- 1.6 J -- 2.9 J 2.5 J 1.1 J -- -- -- ND ug/L 04/29/08 0.33 -- 5 ND ND 1.1 J 15 12 -- ND ND ND 2.0 J 1.2 J ND -- -- -- -- -- ND ug/L 12/01/08 0.33 -- 5 ND ND 2.5 J 15 14 -- ND ND ND 1.2 J 1.2 J ND -- -- -- -- -- ND ug/L 04/17/09 0.33 -- 5 ND ND 1.5 J 11 12 -- ND ND 0.72 J 0.89 J 0.87 J ND -- -- -- -- -- ND ug/L 10/16/09 0.33 -- 5 ND ND 3.0 J -- 0.62 J ND 1.7 J 0.49 J 0.73 J -- -- -- -- -- -- ND ug/L 04/28/10 0.05 -- 5 ND ND 2.3 J 16 15 -- 0.91 J ND 1.1 J ND 0.79 J ND -- -- -- -- -- ND ug/L 08/02/10 0.33 -- 5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND 4.2 J ND ND ug/L 10/11/10 0.33 -- 5 ND ND 3.0 J 17 15 -- 0.74 J ND 0.42 J ND 0.83 J ND -- -- ND 3.8 J ND ND ug/L 05/09/11 0.08 -- 5 ND ND 1.1 J -- ND ND ND ND 0.79 J ND -- -- -- -- -- ND ug/L 10/12/11 0.08 -- 5 ND ND 1.7 J 12 11 -- ND ND ND ND ND ND 0.88 J 5.8 ND 0.88 J ND ND ug/L 04/17/12 0.13 -- 5 ND ND 1.2 J 9.3 12 -- ND ND 0.65 J 0.64 J 0.66 J ND -- 6.9 ND 5.4 ND ND ug/L 10/25/12 0.13 -- 5 ND ND 1.6 J 11 14 -- ND ND 0.79 J 0.85 J ND ND 0.90 J ND ND 5.0 ND ND ug/L 05/02/13 0.13 -- 5 ND ND 0.77 J 14 17 -- ND ND ND 0.90 J 0.53 J ND 0.74 J 7.9 ND 4.5 J ND ND ug/L 09/24/13 0.13 -- 5 ND ND 0.89 J 11 10 1.4 J 0.44 J ND ND ND 0.46 J ND 0.90 J ND ND 5.6 ND ND ug/L 04/24/14 0.13 -- 5 ND ND 0.79 J 10 15 -- ND ND ND 0.54 J 0.42 J ND 0.80 J ND ND ND ND ND ug/L 10/06/14 0.13 -- 5 ND ND 0.53 J 8.4 11 1.2 J ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.13 -- 5 ND ND 0.45 J 7.1 14 1.2 J ND ND ND 0.89 J 0.13 -- 0.96 J 5.7 ND ND ND ND ug/L 10/07/15 0.13 -- 5 ND -- 0.86 J ND 14 0.99 J ND ND ND 0.79 J ND ND ND 5.8 ND 3.7 J ND ND ug/L 04/20/16 0.13 -- 5 ND ND 0.46 J 9.5 12 0.95 J ND ND ND 1.2 J ND ND 0.9 J 0.42 J ND 5.5 ND ND ug/L 09/26/16 0.13 -- 5 ND -- 0.76 J 8.6 12 1.0 J ND ND ND 0.63 J ND ND 0.81 J 4.6 ND ND ND ND ug/L 04/25/17 0.13 -- 5 ND ND ND 7.5 12 0.80 J ND ND ND 1.0 J ND ND 0.91 J 3.8 J ND 0.51 J ND ND ug/L 10/17/17 0.13 -- 5 ND -- 0.54 J 6.3 10 0.85 J ND ND ND 1.0 J ND ND 0.66 J 4.0 J ND 4.6 J ND ND ug/L 04/16/18 0.13 -- 5 ND ND ND 7.2 11 0.77 J ND ND ND 1.7 J ND ND 0.91 J 2.7 J ND 7.8 ND ND ug/L 10/16/18 0.13 1.0 -- ND -- ND 5.3 5.5 0.55 J ND ND ND 1.1 ND ND ND ND ND 1.1 ND ND ug/L 04/12/19 0.13 1.0 -- ND ND ND 4.8 4.4 ND ND ND ND 0.99 J ND ND 0.66 J 0.41 J ND 4.2 ND ND ug/L 10/07/19 0.13 1.0 -- ND ND ND 5.4 4.2 0.55 J ND ND ND 1.6 ND ND 0.73 J 2.4 ND 4.9 ND ND ug/L 04/20/20 0.13 1.0 -- ND ND ND 4.0 3.8 ND ND ND ND 1.4 ND ND 0.72 J 0.88 J ND 3.6 ND ND ug/L 10/13/20 0.13 1.0 -- ND ND ND 4.4 2.7 0.66 J ND ND ND 1.6 ND ND 0.78 J 2.2 ND 1.7 ND ND ug/L 04/28/21 0.13 1.0 -- ND ND ND 2.9 1.8 ND ND ND ND 1.5 ND ND 0.74 J ND ND 3.7 ND ND ug/L 10/14/21 0.13 1.0 -- ND ND ND ND 2.1 ND ND ND ND 0.83 J ND 3.2 0.84 J 2.2 ND 5.4 ND ND ug/L 04/19/22 0.13 1.0 -- ND ND ND 3.3 2.8 ND ND ND ND ND ND ND ND ND ND 2.2 ND ND u /L 10/20/22 0.13 1.0 -- ND ND ND 3.0 1.7 ND ND ND ND ND ND ND 0.83 J 1.3 0.71 J 3.9 ND ND 1,2-Dichloroethane ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 0.4 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 5 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.46 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.65 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.65 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.65 -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.65 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.65 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.65 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.47 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.47 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.21 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.21 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.21 -- 1 ND ND ND 0.40 J ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.21 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.21 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.21 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.21 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.21 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.21 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.21 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.21 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.21 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.21 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.21 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 7of17 February 2023 TABLE 4 19131339.105 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method SWS Assessment Reporting Sample Practical Upgradient Monitoring Wells Compliance Downgradient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constituent Detection Reporting Blanks Units Date Quantitation Limit Well Limit Limit MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 1, 1 -Dichloroethene ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 7 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 7 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND 0.50 1 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND 0.52 1 ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.20 -- 5 ND ND ND 0.47 1 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.24 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.24 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.24 -- 5 ND ND ND 0.60 1 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.15 -- 5 ND ND ND 0.45 1 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.24 -- 5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.24 -- 5 ND ND ND 0.49 1 ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.60 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.60 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.21 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.21 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.21 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.21 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.21 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.21 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.21 -- 5 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.21 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.21 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.21 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.21 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.21 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.21 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.21 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND cis-1,2-Dichloroethene ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 70 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 70 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND 44 ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND 6.0 ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND 5.2 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND 5.0 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND 7.9 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND 6.8 ND -- ND ND 1.1 1 ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- ND ND ND ND ND -- ND -- 1.3 1 ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.30 -- 5 ND ND ND 12 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.36 -- 5 ND ND 0.71 1 11 0.52 1 -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.36 -- 5 ND ND 1.0 1 11 0.52 1 -- ND ND 2.3 1 ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.36 -- 5 ND ND 3.0 1 20 0.46 1 -- ND ND 0.94 1 ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.075 -- 5 ND ND 3.3 1 20 0.66 1 -- ND ND 3.6 1 ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.36 -- 5 -- ND 4.9 1 20 -- -- -- -- 0.71 1 ND -- -- -- 20 ND 6.9 ND ND ug/L 10/11/10 0.36 -- 5 ND ND 4.2 1 23 0.88 1 -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.72 -- 5 ND ND 0.88 1 21 1.7 1 -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.72 -- 5 ND ND ND 21 ND -- ND ND ND ND ND ND ND 16 ND 1.2 1 ND ND ug/L 04/17/12 0.15 -- 5 ND ND 2.1 1 17 0.66 1 -- ND ND 0.79 1 0.58 1 0.15 ND -- 16 ND 12 ND ND ug/L 10/25/12 0.15 -- 5 ND ND 3.0 1 23 0.73 1 -- ND ND 0.48 1 0.44 1 ND ND ND 24 ND 12 ND ND ug/L 05/02/13 0.15 -- 5 ND ND 1.3 1 29 1.0 1 -- 0.15 0.15 0.15 0.15 0.15 ND 0.15 23 ND 14 ND ND ug/L 09/24/13 0.15 -- 5 ND ND 2.6 1 26 0.68 1 0.87 1 ND ND ND ND ND 0.78 1 ND 26 ND ND ND ND ug/L 04/24/14 0.15 -- 5 ND ND 0.43 1 26 1.0 1 -- ND ND ND ND ND ND ND ND ND 14 ND ND ug/L 10/06/14 0.15 -- 5 ND ND 1.1 1 21 0.74 1 ND ND ND ND ND ND ND ND 17 ND ND ND ND ug/L 04/14/15 0.15 -- 5 ND ND ND 19 1.3 1 1.0 1 ND ND ND ND ND -- ND ND ND 15 ND ND ug/L 10/07/15 0.15 -- 5 ND -- ND ND 0.85 1 0.60 1 ND ND ND ND ND ND ND 13 ND 7.6 ND ND ug/L 04/20/16 0.15 -- 5 ND ND ND 21 1.1 1 0.82 1 ND ND ND ND ND ND ND 0.83 1 ND 12 ND ND ug/L 09/26/16 0.15 -- 5 0.15 -- ND 20 1.1 1 0.15 0.15 0.15 0.15 0.15 0.15 0.15 ND 8.0 ND 12 ND ND ug/L 04/25/17 0.15 -- 5 ND ND ND 21 1.3 1 1.1 1 ND ND ND ND ND ND ND 7.3 ND 1.0 1 ND ND ug/L 10/17/17 0.15 -- 5 ND -- ND 16 0.92 1 0.65 1 ND ND ND ND ND ND ND 7.4 ND 11 ND ND ug/L 04/16/18 0.15 -- 5 ND ND ND 19 1.3 1 0.83 1 ND ND ND ND ND ND ND 4.4 1 ND 22 ND ND ug/L 10/16/18 0.15 1.0 -- ND -- ND 16 0.91 1 0.82 1 ND ND ND ND ND ND ND 0.53 1 ND 2.7 ND ND ug/L 04/12/19 0.15 1.0 -- ND ND ND 12 0.56 1 ND ND ND ND ND ND ND ND 0.55 1 ND 14 ND ND ug/L 10/07/19 0.15 1.0 -- ND ND ND 13 0.69 1 0.62 1 ND ND ND ND ND ND ND 2.9 ND 14 ND ND ug/L 04/20/20 0.15 1.0 -- ND ND ND 9.3 0.62 1 0.56 1 ND ND ND ND ND ND ND 0.91 1 ND 10 ND ND ug/L 10/13/20 0.15 1.0 -- ND ND ND 8.7 0.55 1 0.80 1 ND ND ND ND ND ND ND 2.6 ND 4.8 ND ND ug/L 04/28/21 0.15 1.0 -- ND ND ND 5.6 ND ND ND ND ND ND ND ND ND ND ND 11 ND ND ug/L 10/14/21 0.15 1.0 -- ND ND ND ND ND ND ND ND ND ND ND 5.2 ND 1.5 ND 18 ND ND ug/L 04/19/22 0.15 1.0 -- ND ND ND 3.6 ND ND ND ND ND ND ND ND ND ND ND 3.8 ND ND u /L 10/20/22 0.15 1.0 -- ND ND ND 3.7 ND ND ND ND ND ND ND ND ND 0.95 1 0.44 1 10.0 ND ND Bromomethane ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- SWS GPS = 10 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- (No EPA MCL) ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND 2.1 1 ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.49 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.49 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.49 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/16/09 0.49 -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.49 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 08/02/10 0.49 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.49 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.58 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.58 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.14 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.14 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.14 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.14 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.14 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.14 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.14 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.14 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/20/22 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Chloromethane ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 3 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND 0.43 1 0.18 ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.23 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.34 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.34 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.34 -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.05 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.34 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 0.40 1 0.44 1 0.34 ND ug/L 10/11/10 0.34 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND 0.61 1 ND ND ug/L 05/09/11 0.55 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.55 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.13 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.13 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.13 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.13 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.13 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.13 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.13 -- 1 ND 0.74 1 ND ND ND ND ND ND ND ND 0.56 1 ND ND 0.49 1 ND ND ND ND ug/L 10/17/17 0.13 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.13 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.13 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.13 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.13 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.13 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.13 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.13 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 0.13 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.13 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 8of17 February 2023 TABLE 4 19131339.105 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method SWS Assessment Reporting Sample Practical Upgradient Monitoring Wells Compliance Downgradient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constituent Detection Reporting Blanks Units Date Quantitation Limit Well Limit Limit MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Methylene Chloride ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 5 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 5 ug/L ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.24 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.53 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.53 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.53 -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.07 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.53 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND N D ND N D ug/L 10/11/10 0.53 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.14 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.14 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.23 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.23 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.23 -- 1 ND ND ND ND 0.47 1 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.23 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.23 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.23 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.23 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.23 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND 0.46 B ND ND ND ND ND 0.52 1 ug/L 10/07/19 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1.1 ND ug/L 04/19/22 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2-Butanone ug/L 03/01/99 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 4000 ug/L ug/L 09/01/99 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 100 ND ND ND ND ND -- ND ND ND 680 ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 100 ND ND ND ND ND -- ND ND ND 130 ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND 38 1 ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.44 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 1 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 1 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 1 -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 1 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 1 -- 100 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 1 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 1.3 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 1.3 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 1.3 -- 100 ND ND ND ND ND -- ND ND ND 17 1 ND ND -- ND ND ND ND ND ug/L 10/25/12 1.3 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 1.3 -- 100 ND ND ND ND ND -- ND ND ND 11 1 ND ND ND ND ND ND ND ND ug/L 09/24/13 1.3 -- 100 ND ND ND ND ND 31 1 ND ND ND 4.3 1 ND ND ND ND ND ND ND ND ug/L 04/24/14 1.3 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 1.3 -- 100 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 1.3 -- 100 ND 1.3 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1.3 ND ug/L 09/26/16 1.3 -- 100 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 1.3 -- 100 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 1.3 5.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 1.3 5.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 1.3 5.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 1.3 5.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 1.3 5.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 1.3 5.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 1.3 5.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 1.3 5.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 1.3 5.0 -- ND ND 6.6 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Naphthalene ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND NC 2L = 6 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 12/01/08 0.39 -- 10 ND ND 2.3 1 ND 0.39 -- ND 5.6 1 ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.39 -- 10 ND ND ND ND ND -- ND 3.9 1 ND ND ND -- -- -- -- -- -- ND ug/L 10/11/10 0.39 -- 10 ND ND ND ND ND -- ND 2.7 1 ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.46 -- 10 ND ND ND ND ND -- 0.46 ND 0.46 0.46 ND ND -- -- -- -- -- ND ug/L 10/25/12 0.11 -- 10 ND ND ND ND ND -- ND 4.6 1 ND ND ND ND -- -- -- -- -- ND ug/L 09/24/13 0.11 -- 10 ND ND ND ND ND ND ND 1.6 1 ND ND ND ND -- -- -- -- -- ND ug/L 10/06/14 0.11 -- 10 ND ND ND ND ND ND ND 2.5 1 ND ND ND ND ND ND ND ND ND ND ug/L 10/07/15 0.11 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.11 -- 10 ND -- ND ND ND ND ND 1.5 1 ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.11 -- 10 ND -- ND ND ND ND ND 3.9 1 ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.11 1.0 -- ND -- ND ND ND ND ND 0.83 1 ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.11 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.11 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.11 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.11 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Styrene ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- SWS GPS = 70 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- EPA MCL = 100 ug/L ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.20 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.26 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.26 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/16/09 0.26 -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.26 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND ND ND -- ug/L 04/29/10 0.082 -- 1 -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND ug/L 08/02/10 0.26 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.26 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.053 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.053 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.11 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.11 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.11 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.11 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.11 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.11 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.11 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.11 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.11 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.11 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.11 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.11 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.11 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.11 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.11 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.11 1.0 -- ND ND ND ND ND 0.20 1 ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.11 1.0 -- ND ND ND ND ND 0.49 1 ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.11 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.11 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.11 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 0.11 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/20/22 0.11 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 9of17 February 2023 TABLE 4 19131339.105 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method SWS Assessment Reporting Sample Practical Upgradient Monitoring Wells Compliance Downgradient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constituent Detection Reporting Blanks Units Date Quantitation Limit Well Limit Limit MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Tetrachloroethene ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND 12 ND ND ND -- ND -- -- -- ND NC 2L = 0.7 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND 12 ND ND -- -- -- -- -- -- ND EPA MCL = 5 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND 9 ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND 12 ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND 9.6 ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND 20 ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND 7 ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND 8.7 ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND 6.7 ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND 5.2 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- ND ND ND ND -- N D N D 3.6 1.8 N D -- -- -- -- -- -- N D ug 09/26/07 -- -- -- ND ND ND ND -- N D -- 1.6 0.49 J N D -- -- -- -- -- -- N D ug/L 04/29/08 0.36 -- 1 ND ND ND 3.5 ND -- ND ND 0.69 J 0.40 J ND ND -- -- -- -- -- ND ug/L 12/01/08 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.36 -- 1 ND ND ND 3.2 ND -- ND ND 0.99 J 0.63 J ND ND -- -- -- -- -- ND ug/L 10/16/09 0.36 -- 1 ND ND ND 5. ND -- N D N D 0.83 J 0.51 J N D -- -- -- -- -- -- N D ug/L 04/28/10 0.099 -- 1 ND ND ND 4.2 ND -- ND ND 0.56 J 0.57 J ND ND -- -- -- -- -- ND ug/L 08/02/10 0.36 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.36 -- 1 ND ND 0.36 ND ND -- ND ND ND 0.57 J ND ND -- -- ND ND ND ND ug/L 05/09/11 0.73 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.73 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.17 -- 1 ND ND ND ND ND -- ND ND ND 0.41 J ND ND -- ND ND ND ND ND ug/L 10/25/12 0.17 -- 1 ND ND ND 2.7 ND -- ND ND 0.52 J 0.52 J ND ND ND ND ND ND ND ND ug/L 05/02/13 0.17 -- 1 ND ND ND 2.4 ND -- ND ND ND 0.48 J ND ND ND ND ND ND ND ND ug/L 09/24/13 0.17 -- 1 ND ND ND 2.1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.17 -- 1 ND ND ND ND ND -- ND ND ND 0.51 J ND ND ND ND ND 0.44 J ND ND ug/L 10/06/14 0.17 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.17 -- 1 ND ND ND 0.85 J ND ND ND ND 0.40 J ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.17 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.17 -- 1 ND ND ND 1.4 ND ND ND ND ND 0.44 J ND ND ND ND ND ND ND ND ug/L 09/26/16 0.17 -- 1 ND -- ND 0.69 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.17 -- 1 ND ND ND 1.0 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.17 -- 1 ND -- ND 0.61 J ND ND ND ND ND 0.40 J ND ND ND ND ND ND ND ND ug/L 04/16/18 0.17 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.17 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.17 1.0 -- ND ND ND 0.42 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.17 1.0 -- ND ND ND ND ND ND ND ND ND 0.31 J ND ND ND ND ND ND ND ND ug/L 04/20/20 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Toluene ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 600 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 1000 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND 0.36 J ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.20 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.27 -- 1 ND ND ND ND ND -- ND 0.43 J ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.27 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.27 -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.053 -- 1 ND ND ND ND ND -- ND ND 1.0 ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.27 -- 1 -- ND ND ND -- -- -- -- ND ND -- -- -- ND ND ND ND ND ug/L 10/11/10 0.27 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 05/09/11 0.85 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.85 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.14 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.14 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.14 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.14 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.14 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.14 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.14 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.14 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.14 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.14 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.14 -- 1 ND ND ND ND ND ND ND ND ND ND 8.2 ND ND ND ND ND ND ND ug/L 10/17/17 0.14 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.14 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.14 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.14 1.0 -- ND ND 0.15 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Trichloroethene ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 3 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 5 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND 20 ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.25 -- 1 ND ND ND 3.6 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.38 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.38 -- 1 ND ND ND 3.0 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.38 -- 1 ND ND 0.91 J .7 ND -- ND ND 0.48 J ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.13 -- 1 ND ND 0.53 J ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.38 -- 1 -- ND 0.62 J 4.1 -- -- -- -- ND ND -- -- -- ND ND ND ND ND ug/L 10/11/10 0.38 -- 1 ND ND 0.48 J 3.6 ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.72 -- 1 ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.72 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.15 -- 1 ND ND ND 2.5 ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.15 -- 1 ND ND ND 2.9 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.15 -- 1 ND ND ND 3.2 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.15 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.40 J ND ND ug/L 04/24/14 0.15 -- 1 ND ND ND 2.5 ND -- ND ND ND ND ND ND ND ND ND 0.60 J ND ND ug/L 10/06/14 0.15 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.15 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.15 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.15 -- 1 ND ND ND 2.0 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.15 -- 1 ND -- ND 1.4 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.15 -- 1 ND ND ND 2.6 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.15 -- 1 ND -- ND 1.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.15 -- 1 ND ND ND 1.4 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.15 1.0 -- ND -- ND 0.91 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.15 1.0 -- ND ND ND 1.2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.15 1.0 -- ND ND ND 0.75 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.15 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.15 1.0 -- ND ND ND 0.51 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.15 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.15 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 0.15 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.15 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Trichlorofluoromethane ug/L 03/01/99 -- -- 5 ND ND 38 34 ND -- ND 28 ND ND ND ND -- ND -- -- -- ND NC 2L = 2000 ug/L ug/L 09/01/99 -- -- 5 ND ND ND 30 ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 5 ND ND ND 14 ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND 20 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND 14 ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND 23 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND 17 ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND 5.2 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND 14 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND 5.6 ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND 21 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND 7.0 ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND 10 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND 13 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.28 -- 1 ND ND ND 4.2 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.28 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.28 -- 1 ND ND ND 2.5 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.28 -- 1 ND ND ND 4.1 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.15 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.28 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.28 -- 1 ND ND ND 2.3 ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.66 -- 1 ND ND ND 1.2 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.66 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.24 -- 1 ND ND ND 0.84 J ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.24 -- 1 ND ND ND 0.88 J ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.24 -- 1 ND ND ND 0.73 J ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.24 -- 1 ND ND ND 0.48 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.24 -- 1 ND ND ND 0.55 J ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.24 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.24 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.24 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.24 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.24 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.24 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.24 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.24 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.24 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.24 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.24 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.24 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.24 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.24 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.24 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 0.24 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.24 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 10of17 February 2023 TABLE 4 19131339.105 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method SWS Assessment Reporting Sample Practical Upgradient Monitoring Wells Compliance Downgradient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constituent Detection Reporting Blanks Units Date Quantitation Limit Well Limit Limit MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Vinyl Chloride ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 0.03 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 2 ug/L ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- 12 -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug 09/26/07 -- -- -- ND ND ND -- N D -- 0.44 J N D N D -- -- -- -- -- -- N D ug/L 04/29/08 0.3 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.3 -- 1 ND ND 0.73 J 3.9 0.44 J -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 02/13/09 0.3 -- 1 -- -- -- -- 0.47 J -- -- -- -- -- -- -- -- -- -- -- -- ND ug/L 04/17/09 0.3 -- 1 ND ND ND ND ND -- ND ND 0.45 J ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.3 -- 1 ND ND ND -- ND ND 0.47 J ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.083 -- 1 ND ND J ND -- ND ND 0.80 J ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.3 -- 1 -- ND 1.5 4.8 -- -- -- -- ND ND -- -- -- 2.6 ND 0.49 J ND ND ug/L 10/11/10 0.3 -- 1 ND ND 1.4 5.4 0.44 J -- ND ND ND ND ND ND -- -- ND 0.68 J ND ND ug/L 05/09/11 0.6 -- 1 ND ND ND 5. ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.6 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND 0.69 ND ND ND ND ug/L 04/17/12 0.32 -- 1 ND ND 0.52 J 2.1 ND -- ND ND ND ND ND ND -- 1.0 ND ND ND ND ug/L 10/25/12 0.32 -- 1 ND ND 1.3 ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.32 -- 1 ND ND ND 5.6 0.54 J -- ND ND ND ND ND ND ND 0.79 ND ND ND ND ug/L 09/24/13 0.32 -- 1 ND ND 0.43 J 3.6 ND ND ND ND ND ND ND ND ND 4.0 ND 1.3 ND ND ug/L 04/24/14 0.32 -- 1 ND ND ND 4.6 0.52 J -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.32 -- 1 ND ND ND 2.6 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.32 -- 1 ND ND ND 2.5 0.44 J ND ND ND ND ND ND -- ND ND 0.71 1.6 0.71 ND ug/L 10/07/15 0.32 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND 0.72 J ND ND ug/L 04/20/16 0.32 -- 1 ND ND ND 4.2 ND ND ND ND ND ND ND ND ND ND ND 1.6 ND ND ug/L 09/26/16 0.32 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND 1.4 ND 1.5 ND ND ug/L 04/25/17 0.32 -- 1 ND ND ND 3.1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.32 -- 1 ND -- ND 2.5 ND ND ND ND ND ND ND ND ND 1.5 ND 1.7 ND ND ug/L 04/16/18 0.32 -- 1 ND ND ND 3.2 ND ND ND ND ND ND ND ND ND ND ND 3.0 ND ND ug/L 10/16/18 0.32 1.0 -- ND -- ND 2.4 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.32 1.0 -- ND ND ND 1.4 ND ND ND ND ND ND ND ND ND ND ND 1.1 ND ND ug/L 10/07/19 0.32 1.0 -- ND ND ND 2.2 ND ND ND ND ND ND ND ND ND ND ND 1.6 ND ND ug/L 04/20/20 0.32 1.0 -- ND ND ND 1.3 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.32 1.0 -- ND ND ND 1.7 ND ND ND ND ND ND ND ND ND 0.47 J ND ND ND ND ug/L 04/28/21 0.32 1.0 -- ND ND ND 1.3 ND ND ND ND ND ND ND ND ND ND ND 1.7 ND ND ug/L 10/14/21 0.32 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2.6 ND ND ug/L 04/19/22 0.32 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/20/22 0.32 1.0 -- ND ND ND 1.0 ND ND ND ND ND ND ND ND ND ND ND 1.5 ND ND Xylenes (Total) ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 500 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 10000 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.67 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.4 -- 5 ND ND ND ND ND -- ND 3.1 J ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.4 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.4 -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.22 -- 5 ND ND ND ND ND -- ND 1.8 J ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.4 -- 5 -- ND ND ND -- -- -- -- ND ND -- -- -- ND ND ND ND ND ug/L 10/11/10 0.4 -- 5 ND ND ND ND ND -- ND 4.0 J ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 2.1 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 2.1 -- 5 ND ND ND ND ND -- ND 5.5 ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.45 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.45 -- 5 ND ND ND ND ND -- ND 2.6 J ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.45 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.45 -- 5 ND ND ND ND ND ND ND 1.8 J ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.45 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.45 -- 5 ND ND ND ND ND ND ND 1.9 J ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.45 -- 5 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.45 -- 5 ND -- ND ND ND ND ND 0.77 J ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.45 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.45 -- 5 ND -- ND ND ND ND ND 1.4 J ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.45 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.45 -- 5 ND -- ND ND ND ND ND 5.3 ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.45 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.45 3.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.45 3.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.45 3.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.45 3.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.45 3.0 -- ND ND ND ND ND ND ND 0.49 J ND ND ND ND ND ND ND ND ND ND ug/L 04/28/21 0.45 3.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.45 3.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/19/22 0.45 3.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/20/22 0.45 3.0 -- ND ND ND ND ND ND ND 2.0 J ND ND ND ND ND ND ND ND ND ND 1,4-Dioxane ug/L 10/16/18 1.2 2.0 -- ND -- 220 2.8 ND 100 4.6 85 1.5 J ND 350 4.1 1.3 J ND ND ND 4.4 ND NC 2L = 3 ug/L (verification event) ug/L 02/20/19 1.2 2.0 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 8.4 ND ug/L 04/12/19 1.2 2.0 -- ND ND 120 2.6 ND 83 2.4 6.3 1.6 J ND 290 ND 3.9 ND 4.9 2.2 12 ND ug/L 10/07/19 1.2 2.0 -- ND ND 210 3.1 ND 79 9.7 120 11 1.4 J 300 24 5.0 2.3 6.1 2.7 19 ND ug/L 04/20/20 0.80 2.0 -- ND ND 170 2.5 1.0 J 69 3.2 33 5.8 1.1 J 310 4.0 3.5 1.0 J 0.93 J 2.4 28 ND ug/L 10/13/20 0.80 2.0 -- ND ND 180 2.3 0.88 J 62 ND 49 2.6 0.87 J 310 1.1 J 3.7 3.0 0.87 J 1.2 J 5.0 ND ug/L 04/28/21 0.80 2.0 -- ND ND 170 2.5 1.0 J 49 1.5 J 14 7.0 1.4 J 340 3.6 4.3 ND ND 2.7 21 ND ug/L 10/14/21 0.80 2.0 -- 0.80 J ND 220 1.9 J 1.0 J 59 2.2 75 11 ND 330 2.4 3.9 2.9 1.4 J 2.8 10 ND ug/L 04/19/22 0.80 2.0 -- ND ND 150 2.3 ND 45 ND 3.2 2.1 0.80 J 340 ND 3.4 1.7 J 1.1 J 1.7 J 5.5 ND ug/L 10/20/22 0.27 1.4 -- 0.32 J ND 380 2.7 0.42 J 65 9.2 190 14 ND 510 9.2 3.6 4.2 2.6 2.5 22 ND Tetrahydrofuran ug/L 10/12/11 0.8 -- -- ND ND 11 ND ND -- ND 34 ND ND 0.82 J ND -- -- -- -- -- ND IMAC = 2,000 ug/L ug/L 04/17/12 0.8 -- -- ND ND 4.4 ND ND -- ND 4 ND ND ND ND -- -- -- -- -- ND (No EPA MCL) ug/L 10/25/12 0.8 -- -- ND ND ND ND ND -- ND ND ND ND ND ND -- ND ug/L 05/02/13 0.8 -- -- ND ND 5.5 ND ND -- ND ND ND 150 6.6 ND -- -- -- -- -- ND ug/L 09/24/13 0.8 -- -- ND ND 6.5 ND ND 10 ND 18 ND 18 6.4 ND -- -- -- -- -- ND ug/L 04/24/14 0.8 -- -- ND ND 4.9 ND ND -- ND ND ND 140 13 ND -- -- -- -- -- ND ug/L 10/06/14 0.8 -- -- ND ND ND ND ND 11 ND 29 ND ND 9.4 ND ND -- -- -- -- ND ug/L 04/14/15 0.8 -- -- ND ND 8.2 ND ND 5.3 ND 1.0 ND 5.6 4.4 -- ND -- -- -- -- ND ug/L 10/07/15 0.8 -- -- ND -- 21 ND ND 7.2 ND 32 ND ND 9.8 -- ND ND ND ND ND ND ug/L 04/20/16 0.8 -- -- ND ND 7.1 ND ND 1.4 ND ND ND 50 7.0 ND ND ND ND ND ND ND ug/L 09/26/16 0.8 -- -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.8 -- -- ND ND 5.3 ND ND 6.7 ND ND ND 140 13 ND ND ND ND ND ND ND ug/L 10/17/17 0.53 -- -- ND -- 16 ND ND 4.2 ND 54 ND 20 12 ND ND ND ND ND ND ND ug/L 10/16/18 0.53 1.0 -- ND -- 5.1 ND ND ND ND 2.3 ND ND 9.7 ND -- -- -- -- -- ND ug/L 04/12/19 0.53 1.0 -- ND ND 4.9 ND ND ND ND ND ND ND 11 ND -- -- -- -- -- ND ug/L 10/07/19 0.53 1.0 -- ND ND 15 ND ND 4.9 4.3 9.1 ND ND 16 ND ND ND ND ND ND ND ug/L 04/20/20 0.53 1.0 -- ND ND ND ND ND ND ND ND ND ND 16 ND -- -- -- -- -- ND ug/L 10/13/20 0.53 1.0 -- ND ND 9.5 ND ND ND ND 9.0 ND ND 18 ND -- -- -- -- -- ND ug/L 04/28/21 0.53 1.0 -- ND ND 8.0 ND ND ND ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/14/21 0.53 1.0 -- ND ND 19 ND ND ND ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/19/22 0.53 1.0 -- ND ND 13 ND ND ND ND ND ND ND 21 ND ND ND ND ND ND ND u /L 10/20/22 0.53 1.0 -- ND ND 22 ND ND 2.8 ND 27 ND ND 18 ND ND ND ND ND ND ND Di-n-butylphthalate ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND NC 2L = 700 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND 1.1 J ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 12/01/08 1.6 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 1.4 -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/11/10 1.5 -- 10 ND ND 4.1 J ND ND -- ND 1.9 J 1.8 J 4.0 J 2.7 J ND -- -- -- -- -- ND ug/L 10/12/11 1.5 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 1.5 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 09/24/13 1.5 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/06/14 1.5 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/15 1.5 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 1.5 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 2.8 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 2.8 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 2.8 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 2.8 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 2.8 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 1.0 12 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 4-Chloro-3-methylphenol ug/L 09/01/99 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No NC 2L) ug/L 09/01/00 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 09/01/01 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/02 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/04 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/05 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/06 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 12/01/08 1.5 -- 20 ND ND ND ND ND -- ND 2.8 J ND ND ND ND -- -- -- -- -- ND ug/L 02/13/09 1.4 -- 20 -- -- -- -- -- -- -- 2.4 J -- -- -- -- -- -- -- -- -- ND ug/L 10/16/09 1.6 -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/11/10 1.5 -- 20 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 1.5 -- 20 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 1.5 -- 20 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 09/24/13 1.5 -- 20 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/06/14 1.5 -- 20 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/15 1.5 -- 20 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 1.5 -- 20 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 2.4 -- 20 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 2.4 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 2.4 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 2.4 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 2.4 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/20/22 1.2 13 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 11 of 17 February 2023 TABLE 4 19131339.105 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method SWS Assessment Detected Monitoring Constituent Reporting Sample Detection Practical Reporting Upgradient Monitoring Wells Compliance Downgradient Monitoring Wells Monitoring Sentinel Monitoring Wells Blanks Units Date Limit Quantitation Limit Limit Well MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Dibenzofuran ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND IMAC = 28 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 12/01/08 2.1 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 1.3 -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/11/10 1.4 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 1.4 -- 10 ND ND ND ND ND -- ND ND ND 2.4 J ND ND -- -- -- -- -- ND ug/L 10/25/12 1.4 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 09/24/13 1.4 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/06/14 1.4 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/15 1.4 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 1.4 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 2.6 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 2.6 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 2.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 2.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 2.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 1.0 12 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Thionazin ug/L 09/01/99 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No NC 2L) ug/L 09/01/00 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 09/01/01 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/02 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/04 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/05 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/06 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 12/01/08 2 -- 20 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 1.2 -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/11/10 2.3 -- 20 ND ND 2.3 ND ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 10/12/11 2.3 -- 20 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 2.3 -- 20 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 09/24/13 2.3 -- 20 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/06/14 2.3 -- 20 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/15 2.3 -- 20 -- -- ND ND ND ND ND ND ND ND ND -- ND ND -- ND -- ND ug/L 09/26/16 2.3 -- 20 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 2.3 -- 20 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 2.3 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 2.3 10 -- ND ND ND ND ND ND ND ND ND ND ND ND 7.1 J ND ND ND ND ND ug/L 10/13/20 2.3 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 2.3 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 2.4 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 2.4 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 1.1 12 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2,6-Dinitrotoluene ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No NC 2L) ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 12/01/08 1.4 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 1.0 -- 10 ND ND ND ND ND __ ND ND ND ND ND __ __ __ __ -- -- ND ug/L 10/11/10 1.5 -- 10 ND ND 1.9 J ND ND -- ND 2.8 J ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 1.5 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 1.5 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 09/24/13 1.5 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/06/14 1.5 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/15 1.5 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 1.5 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 2.5 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 2.5 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 2.5 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 2.5 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 2.5 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 1.3 12 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Disulfoton ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND NC 2L = 0.3 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- ND ND ND ND ND -- 1.6 J -- ND ND ND -- -- -- -- -- -- ND ug/L 12/01/08 1.0 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/11/10 1.1 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 1.1 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 1.1 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 09/24/13 1.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/06/14 1.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/15 1.1 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 1.1 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 2.0 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 2.0 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 2.0 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 2.0 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 2.0 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 1.0 12 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Bis(2-ethylhexyl)phthalate ug/L 09/01/99 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND NC 2L = 3 ug/L ug/L 09/01/00 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 09/01/01 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/02 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/04 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/05 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/06 -- -- 20 29 ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 12/01/08 2.0 -- 15 ND 4.2 J ND ND ND -- ND ND ND 2.0 J ND ND -- -- -- -- -- ND ug/L 10/16/09 2.6 -- 15 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/11/10 1.7 -- 15 ND 2.0 J ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 1.7 -- 15 ND ND ND ND ND -- ND ND ND ND ND 2.2 J -- -- -- -- -- ND ug/L 10/25/12 1.7 -- 15 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 09/24/13 1.7 -- 15 ND 13 J ND 1.8 J ND ND ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/06/14 1.7 -- 15 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/15 1.7 -- 15 1.8 J -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 1.7 -- 15 ND -- ND 3.0 J ND 5.0 J 2.3 J ND 3.3 J ND 2.6 J ND ND ND ND ND ND ND u g/L 03/21 / 17 1.7 -- 15 -- -- -- ND -- ND -- -- ND -- -- -- -- -- -- -- -- ND ug/L 10/17/17 1.9 -- 15 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 1.9 5.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 6.3 ug/L 10/07/19 1.9 5.0 -- 3.7 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 1.9 5.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 1.9 5.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 2.0 12.0 -- ND ND ND ND ND ND ND 1.7 J ND ND ND ND ND ND ND ND ND ND Hexachlorobutadiene ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- NC 2L = 0.4 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- (No EPA MCL) ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- -- ug/L 12/01/08 3.1 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.35 -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/11/10 1.2 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.88 -- 10 ND ND ND ND ND -- 1.2 ND 0.88 0.88 ND ND -- -- -- -- -- ND ug/L 10/12/11 1.2 -- 10 ND ND ND ND ND -- 0.88 N D 1.2 1.2 N D N D -- -- -- -- -- -- ug/L 10/25/12 1.2 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 1.2 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 1.2 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 1.2 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 1.2 -- 10 ND -- 0.22 ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 2.8 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 2.8 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 2.8 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 2.8 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 2.8 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.76 12 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Hexachlorocyclopentadiene ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- (No NC 2L) ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- EPA MCL = 50 ug/L ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- -- ug/L 12/01/08 2.5 -- 10 ND ND ND ND ND -- ND 5.6 J ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 1.0 -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/11/10 1.3 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/12/11 1.3 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 1.3 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 1.3 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 1.3 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 1.3 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 1.3 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 2.7 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 2.7 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 2.7 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 2.7 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 2.7 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 3.1 12 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 12 of 17 February 2023 TABLE 4 19131339.105 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method SWS Assessment Detected Monitoring Constituent Reporting Sample Detection Practical Reporting Upgradient Monitoring Wells Compliance Downgradient Monitoring Wells Monitoring Sentinel Monitoring Wells Blanks Units Date Limit Quantitation Limit Limit Well MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 2-Methylnaphthalene ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- NC 2L = 30 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- (No EPA MCL) ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- -- ug/L 12/01/08 2.9 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/16/09 1.3 -- 10 ND ND ND ND ND -- ND 1.6 1 ND ND ND -- -- -- -- -- -- -- ug/L 10/11/10 1.5 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/12/11 1.5 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 1.5 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 1.5 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 1.5 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 1.5 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 1.5 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 2.8 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 2.8 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 2.8 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 2.8 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 2.8 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.95 12 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 3-Nitroaniline ug/L 09/01/99 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- (No NC 2L) ug/L 09/01/00 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- (No EPA MCL) ug/L 09/01/01 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- 4.7 1 -- ND ND ND -- -- -- -- -- -- -- ug/L 12/01/08 1.3 -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/16/09 1.6 -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/11/10 2.1 -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/12/11 2.1 -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 2.1 -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 2.1 -- 50 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 2.1 -- 50 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 2.1 -- 50 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 2.1 -- 50 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 2.6 -- 50 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 2.6 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 2.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 2.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 2.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 6.1 61 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5-Nitro-o-Toluidine ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- (No NC 2L) ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- (No EPA MCL) ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- 2.8 1 -- ND ND ND -- -- -- -- -- -- -- ug/L 12/01/08 2 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/16/09 0.6 -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/11/10 3.2 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/12/11 3.2 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 3.2 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 3.2 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 3.2 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 3.2 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 3.2 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 3.2 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 3.2 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 3.2 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 3.2 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 3.2 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 1.8 12 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND N-Nitroso-di-n-propylamine ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- -- (No NC 2L) ug/L 12/01/08 1.5 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- (No EPA MCL) ug/L 10/16/09 1.8 -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/11/10 1.5 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/12/11 1.5 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 1.5 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 1.5 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 1.5 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 1.5 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 1.5 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 2.3 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 2.3 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 2.3 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 2.3 10 -- ND ND ND ND ND ND ND ND ND ND ND 6.6 1 ND ND ND ND ND ND ug/L 10/14/21 2.3 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.88 12 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Phenol ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND NC 2L = 30 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 12/01/08 0.71 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 1.2 -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/11/10 1.4 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 1.4 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 1.4 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 09/24/13 1.4 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/06/14 1.4 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/15 1.4 -- 10 ND -- ND ND ND ND 2.9 1 1.5 1 ND 1.8 1 ND ND ND ND ND ND ND ND ug/L 09/26/16 1.4 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 1.7 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 1.7 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 1.7 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 1.7 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 1.7 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 1.0 12 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND o-Toluidine ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No NC 2L) ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 12/01/08 1.0 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 1.5 -- 10 ND ND ND ND ND -- ND 2.5 1 ND ND ND -- -- -- -- -- -- ND ug/L 10/11/10 1.1 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 1.1 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 1.1 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 09/24/13 1.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/06/14 1.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/15 1.1 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 1.1 -- 10 ND -- 1.3 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND (verification event) ug/L 03/21/17 1.1 -- 10 -- -- ND -- -- -- -- ND -- -- -- -- -- -- -- -- -- ND ug/L 10/17/17 1.6 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 1.6 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 1.6 10 -- ND ND 1.7 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND (verification event) ug/L 01/20/20 1.6 10 -- -- -- ND -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/13/20 1.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 1.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 1.7 12 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1,2,4-Trichlorobenzene ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- NC 2L = 70 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- (No EPA MCL) ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- -- ug/L 12/01/08 0.36 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.36 -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/11/10 0.36 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.58 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 0.14 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 09/24/13 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/15 0.14 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.14 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.14 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.14 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.14 1.0 -- ND ND 0.16 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 3 & 4-Methylphenol ug/L 09/01/99 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- NC 2L = 40 / 400 ug/L ug/L 09/01/00 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- (No EPA MCL) ug/L 09/01/01 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- -- ug/L 12/01/08 1.3 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/16/09 1.8 -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/11/10 1.6 -- 10 ND ND ND ND ND -- ND 2.0 1 ND ND ND ND -- -- -- -- -- -- ug/L 10/12/11 1.6 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 1.6 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 1.6 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 1.6 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 1.6 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 1.6 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 2.1 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 2.1 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 2.1 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 2.1 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 2.1 10 -- ND ND ND 6.3 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 1 10/19/22 1 1.4 1 10 1-- ND ND ND ND ND ND ND 1.7 1 ND ND ND ND ND ND ND ND ND ND 13of17 February 2023 TABLE 4 19131339.105 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method SWS Assessment Reporting Sample Practical Upgradient Monitoring Wells Compliance Downgradient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constituent Detection Reporting Blanks Units Date Quantitation Limit Well Limit Limit MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 alpha-BHC ug/L 09/01/99 -- -- 0.05 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/00 -- -- 0.05 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/01 -- -- 0.05 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 0.05 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 0.05 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 0.05 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 0.05 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 0.05 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- -- ug/L 12/01/08 0.024 -- 0.05 ND ND ND ND ND -- ND ND ND ND 0.16 B ND -- -- -- -- -- -- ug/L 02/13/09 0.024 -- 0.05 -- -- -- -- -- -- -- -- -- -- ND -- -- -- -- -- -- -- ug/L 10/16/09 0.024 -- 0.05 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/11/10 0.015 -- 0.05 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/12/11 0.027 -- 0.05 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 0.036 -- 0.05 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 0.036 -- 0.05 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 0.036 -- 0.05 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 0.036 -- 0.05 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 0.036 -- 0.05 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 0.036 -- 0.05 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.036 0.050 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.036 0.050 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.036 0.050 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.036 0.050 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/19/22 0.001 0.050 -- ND ND ND ND ND 0.035 J ND ND ND ND ND ND ND ND ND ND ND ND delta-BHC ug/L 09/01/99 -- -- 0.05 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/00 -- -- 0.05 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/01 -- -- 0.05 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 0.05 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 0.05 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 0.05 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 0.05 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 0.05 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- -- ug/L 12/01/08 0.013 -- 0.05 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/16/09 0.013 -- 0.05 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/11/10 0.014 -- 0.05 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/12/11 0.022 -- 0.05 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 0.048 -- 0.05 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 0.048 -- 0.05 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 0.048 -- 0.05 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 0.048 -- 0.05 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 0.048 -- 0.05 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 0.048 -- 0.05 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.048 0.050 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.048 0.050 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.048 0.050 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.048 0.050 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/20/22 0.002 0.050 -- ND ND ND ND ND 0.013 Jp ND ND ND ND ND 0.004 J ND 0.0021 J ND ND ND ND Dieldrin ug/L 09/01/99 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/00 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/01 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- -- ug/L 12/01/08 0.023 -- 0.075 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/16/09 0.0053 -- 0.075 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/11/10 0.0089 -- 0.075 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/12/11 0.002 -- 0.075 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 0.045 -- 0.075 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 0.045 -- 0.075 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 0.045 -- 0.075 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 0.045 -- 0.075 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 0.045 -- 0.075 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 0.045 -- 0.075 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.045 0.050 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.045 0.050 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.045 0.050 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.045 0.050 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.002 0.050 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.0025 Jp ND Diethylphthalate ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- NC 2L = 6000 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- (No EPA MCL) ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- -- ug/L 12/01/08 1.4 -- 10 ND ND ND ND ND -- ND 2.3 J ND ND ND ND -- -- -- -- -- -- ug/L 10/16/09 0.61 -- 10 ND ND ND ND ND -- ND 2.5 J 1.0 J ND ND -- -- -- -- -- -- -- ug/L 10/11/10 2.1 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/12/11 2.1 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 2.1 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 2.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 2.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 2.1 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 2.1 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 2.4 -- 10 ND -- ND ND ND ND ND 39 ND ND ND ND ND ND ND ND ND ND (verification event) ug/L 12/21/17 2.4 -- 10 -- -- -- -- -- -- -- ND -- -- -- -- -- -- -- -- -- ND ug/L 10/16/18 2.4 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 2.4 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/20/22 1.1 12 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Endosulfan I ug/L 09/01/99 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- NC 2L = 40 ug/L ug/L 09/01/00 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- (No EPA MCL) ug/L 09/01/01 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 0.1 ND ND 0.25 ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- -- ug/L 12/01/08 0.025 -- 0.1 ND ND ND ND ND -- ND 0.068 B ND ND ND ND -- -- -- -- -- -- ug/L 02/13/09 0.025 -- 0.1 -- -- -- -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- ug/L 10/16/09 0.025 -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/11/10 0.016 -- 0.1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/12/11 0.041 -- 0.1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 0.045 -- 0.1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 0.045 -- 0.1 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 0.045 -- 0.1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 0.045 -- 0.1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 0.045 -- 0.1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 0.045 -- 0.1 ND -- 0.19 ND ND ND ND 0.14 ND ND ND ND ND ND ND ND ND ND u g/L 12/21 / 17 0.045 -- 0.1 -- -- ND -- -- -- -- N D -- -- -- -- -- -- -- -- -- ND ug/L 10/16/18 0.045 0.05 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.045 0.05 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.045 0.05 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.045 0.05 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.002 0.05 -- ND ND ND ND ND 0.047 Jp 0.11 Jp ND ND ND 0.12 ND ND ND 0.014 J ND ND ND Endosulfan sulfate ug/L 09/01/99 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- IMAC = 40 ug/L ug/L 09/01/00 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- (No EPA MCL) ug/L 09/01/01 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- Total -- -- -- ug/L 12/01/08 0.025 -- 0.1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/16/09 0.025 -- 0.1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/11/10 0.012 -- 0.1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/12/11 0.025 -- 0.1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 0.032 -- 0.1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 0.032 -- 0.1 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 0.032 -- 0.1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 0.032 -- 0.1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 0.032 -- 0.1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 0.032 -- 0.1 ND -- 0.16 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u g/L 12/21 / 17 0.032 -- 0.1 -- -- N D -- -- -- -- -- -- -- -- -- -- -- -- -- -- N D ug/L 10/16/18 0.032 0.05 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.032 0.05 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.032 0.05 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.032 0.05 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.002 0.05 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Chlordane (total) ug/L 09/01/99 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- NC 2L = 0.1 ug/L ug/L 09/01/00 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- EPA MCL = 2 ug/L ug/L 09/01/01 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- -- ug/L 12/01/08 0.02 -- ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 12/01/08 0.02 -- 0.5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/16/09 0.2 -- 0.5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/11/10 0.2 -- 0.5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/12/11 0.2 -- 0.5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 0.2 -- 0.5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 0.2 -- 0.5 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 0.2 -- 0.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/15 0.2 -- 0.5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 0.37 -- 0.5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 0.37 -- 0.5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.37 0.50 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.37 0.50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.54 ND ug/L 10/13/20 0.37 0.50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.37 0.50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.16 0.50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 14of17 February 2023 TABLE 4 19131339.105 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method SWS Assessment Reporting Sample Practical Upgradient Monitoring Wells Compliance Downgradient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constituent Detection Reporting Blanks Units Date Quantitation Limit Well Limit Limit MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Chlordane -alpha ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- -- NC 2L = 0.1 ug/L ug/L 12/01/08 0.025 -- NE ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- EPA MCL = 2 ug/L ug/L 10/16/09 0.025 -- NE ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/25/12 0.048 -- NE ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 0.048 -- NE ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 0.048 -- NE ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 0.048 -- NE ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 0.048 -- NE ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 0.048 -- -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.048 0.05 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.048 0.05 -- ND ND ND ND ND ND ND ND ND ND 0.39 ND ND ND ND ND 0.54 ND (verification event) ug/L 01/20/20 0.048 0.05 -- -- -- ND -- -- -- -- -- -- -- ND -- -- -- -- -- ND -- ug/L 10/13/20 0.048 0.05 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.048 0.05 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.005 0.05 -- ND ND ND ND ND 0.018 Jp ND ND 0.0059 J ND 0.031 J ND ND ND ND ND 0.0081 J ND PCBs ug/L 09/01/99 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- IMAC = 0.09 ug/L ug/L 09/01/00 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- EPA MCL = 0.5 ug/L ug/L 09/01/01 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- -- ug/L 12/01/08 0.43 -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/16/09 0.075 -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/11/10 0.19 -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/12/11 0.19 -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 0.19 -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 0.43 -- 2 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 0.43 -- 2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 0.43 -- 2 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 0.48 -- 2 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 0.48 -- 2 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.48 0.50 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.48 0.50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.48 0.50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.48 0.50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.34 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2,4-D ug/L 09/01/99 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- NC 2L = 70 ug/L ug/L 09/01/00 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- EPA MCL = 70 ug/L ug/L 09/01/01 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- -- ug/L 12/01/08 0.13 -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/16/09 0.091 -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/11/10 0.091 -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/12/11 0.15 -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 0.16 -- 2 ND ND ND ND ND -- ND ND ND ND ND 0.16 J -- -- -- -- -- -- ug/L 09/24/13 0.16 -- 2 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 0.27 -- 2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 0.27 -- 2 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 0.27 -- 2 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 0.27 -- 2 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.27 0.50 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.27 0.50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.27 0.50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.27 0.50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.16 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Pentachlorophenol ug/L 09/01/99 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- NC 2L = 0.3 ug/L ug/L 09/01/99 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- EPA MCL = 1 ug/L ug/L 09/01/00 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/00 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/01 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/01 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- -- ug/L 12/01/08 0.056 -- 25 ND ND ND ND ND -- ND ND ND ND 0.07 J ND -- -- -- -- -- -- ug/L 10/16/09 0.043 -- 25 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/11/10 0.043 -- 25 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/12/11 0.13 -- 25 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 0.19 -- 25 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 0.19 -- 25 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 0.19 -- 25 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 0.19 -- 25 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 0.19 -- 25 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 0.19 -- 25 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.19 0.50 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.19 0.50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.19 0.50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.19 0.50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.021 0.23 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2,4,5,-TP (Silvex) ug/L 09/01/99 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- NC 2L = 50 ug/L ug/L 09/01/00 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- EPA MCL = 50 ug/L ug/L 09/01/01 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- -- ug/L 12/01/08 0.087 -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/16/09 0.056 -- 2 ND ND ND ND ND -- 0.085 J 0.45 J ND ND ND -- -- -- -- -- -- -- ug/L 10/11/10 0.056 -- 2 ND ND ND ND ND -- 0.088 J ND ND ND ND ND -- -- -- -- -- -- ug/L 10/12/11 0.15 -- 2 ND ND ND ND ND -- ND 0.29 J ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 0.2 -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 0.2 -- 2 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 0.44 -- 2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 0.44 -- 2 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 0.44 -- 2 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 0.44 -- 2 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.44 0.50 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.44 0.50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.44 0.50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 0.44 0.50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 0.088 0.77 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Cyanide (total) ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- NC 2L = 70 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- EPA MCL = 200 ug/L ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/02 -- -- 10 ND ND ND ND 10 -- ND ND 20 ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 10 10 ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND 10 ND ND ND -- -- -- -- -- -- -- ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- -- ug/L 12/01/08 4.0 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/16/09 4.7 -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/11/10 5.0 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/12/11 3.9 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/25/12 4.9 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 09/24/13 4.9 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/06/14 4.9 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/15 4.9 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 09/26/16 4.9 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/17/17 4.9 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 4.9 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 4.9 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 4.9 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/14/21 4.9 10 -- -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 10/20/22 2.5 10 -- 3 J 3.6 J 7.2 J 2.6 J 3.4 J 4.1 J 5.0 J 5.9 J 7.9 J 3.0 J 26 9.6 J 4.4 J 3.7 J 6.7 J 5.2 J 3.0 J ND Sulfide (total) mg/L 09/01/99 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No NC 2L) mg/L 09/01/00 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) mg/L 09/01/01 -- -- 1 ND ND ND 1 ND -- ND ND ND ND ND -- -- -- -- -- -- ND mg/L 09/01/02 -- -- 1 ND ND ND 5 ND -- ND ND ND ND ND -- -- -- -- -- -- ND mg/L 10/01/03 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND mg/L 09/01/04 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND mg/L 10/01/05 -- -- 1 ND ND ND ND ND -- ND 2 ND ND ND -- -- -- -- -- -- ND mg/L 10/01/06 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND mg/L 09/26/07 -- -- 1 ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND mg/L 05/05/08 0.10 -- 1 -- -- ND ND ND -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 12/01/08 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND mg/L 10/16/09 0.031 -- 1 ND ND ND ND ND -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 04/29/10 0.031 -- 1 -- ND ND ND ND -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 08/02/10 0.031 -- 1 -- ND ND ND ND -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 10/11/10 0.01 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND ND ND ND mg/L 10/12/11 0.01 -- 1 ND ND ND ND ND -- ND 0.012 J ND ND ND 0.013 J -- -- -- -- -- ND mg/L 10/25/12 0.01 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND m g/L 10/25/12 0.01 -- 1 -- ND ND -- ND -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 05/02/13 0.01 -- 1 -- ND ND -- ND -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/24/13 0.01 -- 1 ND ND ND ND ND ND 0.088 J ND ND ND ND ND -- -- -- -- -- ND mg/L 09/24/13 0.01 -- 1 -- ND ND -- ND -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/14 0.01 -- 1 -- ND ND -- ND -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/02/14 0.01 -- 1 -- ND ND -- ND -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/06/14 0.01 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.04 J ND ND ND mg/L 04/14/15 0.01 -- 1 -- ND ND -- ND -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/07/15 0.01 -- 1 ND -- ND 0.059 J ND ND ND 0.059 J ND ND ND ND ND m g/L 04/ 18/ 16 0.01 -- 1 -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/26/16 0.01 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND 0.36 J ND ND ND mg/L 04/25/17 0.01 -- 1 -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/17/17 0.01 -- 1 ND -- ND ND ND ND ND ND ND ND ND 0.042 J ND ND 0.6 J ND ND ND m g/L 04/ 16/ 18 0.01 -- 1 -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/16/18 0.01 0.1 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND m g/L 04/ 12/ 19 0.01 0.1 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/07/19 0.01 0.1 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND mg/L 04/20/20 0.01 0.1 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- mg/L 10/13/20 0.01 0.1 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- mg/L 10/14/21 0.01 0.1 -- ND ND 0.01 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND -- mg/L 04/19/22 0.01 0.1 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- m /L 10/20/22 -- 1.00 -- 1.3 H ND ND ND ND 1.2 ND ND ND ND ND ND -- ND ND ND -- -- 15of17 February 2023 TABLE 4 19131339.105 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method SWS Assessment Reporting Sample Practical Upgradient Monitoring Wells Compliance Downgradient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constituent Detection Reporting Blanks Units Date Quantitation Limit Well Limit Limit MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Chloride mg/L 05/05/08 2.4 -- -- -- -- 450 B 12 -- -- -- -- 4.3 J 4.8 J -- -- -- 6.0 -- -- -- -- NC 2L = 250 mg/L mg/L 10/16/09 0.18 -- -- -- 3.3 J 410 11 -- -- -- --58 4.7 J -- -- -- 10 -- -- -- ND EPA MCL = 250 mg/L mg/L 04/29/10 0.18 -- -- -- 3.9 J 390 12 -- -- -- -- ND 4.8 J -- -- -- 12 -- -- -- ND mg/L 08/02/10 180 -- -- -- 3.7 J 410 12 -- -- -- --16 4.8 J -- -- -- 11 -- -- -- ND mg/L 10/25/12 4.3 -- -- 2.6 B 570 B mg/L 05/02/13 4.3 -- -- -- 2.7 B 340 B -- -- -- -- -- -- -- -- -- -- 13 B -- 6.9 B -- -- mg 09/24/13 22 -- -- -- -- -- -- -- -- 14 -- 7.8 -- ND mg/L 04/25/14 22 -- -- -- 2.8 J 440 -- -- -- -- -- -- -- -- -- -- 7.7 -- 7.3 -- ND mg/L 10/02/14 22 -- -- -- 3.1 J 5 -- -- -- -- -- -- -- -- -- -- 14 -- 9.0 -- ND mg/L 04/14/15 22 -- --3.1 1 630-- -- -- -- -- -- -- 16 -- 11 -- ND mg/L 10/07/15 22 -- -- -- -- 570 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND mg/L 04/18/16 22 -- -- -- 2.3 J 460 -- -- -- -- -- -- -- -- -- -- 14 -- 10 -- ND mg/L 09/26/16 2.2 -- -- -- -- 510-- -- -- -- -- -- -- -- -- 14 -- 13 -- ND mg/L 04/25/17 2.9 -- -- -- 1.5 J 630 -- -- -- -- -- -- -- -- -- -- 16 -- 7.8 -- ND mg/L 10/17/17 2.2 -- -- -- -- 510 -- -- -- -- -- -- -- -- -- -- 17 -- 19 -- ND mg/L 04/16/18 2.2 -- -- -- ND 760 -- -- -- -- -- -- -- -- -- -- 18 -- 16 -- ND mg/L 10/16/18 2.2 5.0 -- -- -- 550 -- -- -- -- -- -- -- -- -- -- 6.3 -- 9.3 -- ND mg/L 04/12/19 2.2 5.0 -- -- 3.1 J 380 -- -- -- -- -- -- -- -- -- -- 23 -- 21 -- ND mg/L 10/07/19 2.2 5.0 -- -- 2.4 J 390 -- -- -- -- -- -- -- -- -- -- 28 -- 17 -- ND mg/L 04/20/20 2.2 5.0 -- -- 4.0 J 570 -- -- -- -- -- -- -- -- -- -- 34 J -- 36 -- -- mg/L 10/13/20 2.2 5.0 -- -- 3.2 J 430 -- -- -- -- -- -- -- -- -- -- 38 -- 13 -- -- mg/L 04/28/21 2.2 5.0 -- -- 3.3 J 400 -- -- -- -- -- -- -- -- -- -- 24 -- 25 -- -- mg/L 10/14/21 2.2 5.0 -- -- 3.8 J 500 -- -- -- -- -- -- -- -- -- -- 40 -- 22 -- -- mg/L 04/19/22 2.2 5.0 -- -- 11 ND -- -- -- -- -- -- -- -- -- -- 32 -- 15 -- -- mg/L 10/20/22 2.2 5.0 -- -- 4.1 J 510 -- -- -- -- -- -- -- -- -- -- 49 H -- 23 -- -- Nitrate as N mg/L 05/05/08 0.01 -- 10 -- -- ND ND -- -- -- -- 2.2 J ND -- -- -- 0.39 J -- -- -- ND NC 2L = 10 mg/L mg/L 10/16/09 0.0056 -- 10 -- 0.017 J 0.028 J ND -- -- -- -- 0.33 J 0.28 J -- -- -- 0.077 J -- -- -- ND EPA MCL = 10 mg/L mg/L 04/29/10 0.021 -- 10 -- ND ND ND -- -- -- -- ND 0.23 J -- -- -- 0.12 J -- -- -- ND mg/L 08/02/10 0.025 -- 10 -- ND 0.062 J 0.029 J -- -- -- -- 0.13 J 0.14 J -- -- -- 0.13 J -- -- -- ND mg/L 10/25/12 0.025 -- 10 -- ND 0.036 J -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 05/02/13 0.025 -- 10 -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/24/13 0.025 -- 10 -- 0.17 J 0.046 J -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/14 0.025 -- 10 -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/02/14 0.025 -- 10 -- ND 0.054 J -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/14/15 0.025 -- 10 -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- 0.042 J -- ND mg/L 10/07/15 0.025 -- 10 -- -- 0.22 J -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND mg/L 04/18/16 0.025 -- 10 -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/26/16 0.025 -- 10 -- -- ND -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/17 0.025 -- 10 -- ND 0.046 J -- -- -- -- -- -- -- -- -- -- 0.16 J -- 1.4 J -- ND mg/L 10/17/17 0.025 -- 10 -- -- 0.071 J -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/16/18 0.025 -- 10 -- ND 0.052 J -- -- -- -- -- -- -- -- -- -- 0.046 J -- ND -- ND mg/L 10/16/18 0.025 0.1 -- -- -- 0.052 J -- -- -- -- -- -- -- -- -- -- 0.2 -- 2.4 -- ND mg/L 04/12/19 0.041 0.1 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- 0.042 mg/L 10/07/19 0.025 0.1 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/20/20 0.041 0.1 -- -- ND 0.052 J -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- mg/L 10/13/20 0.041 0.1 -- -- ND 0.27 -- -- -- -- -- -- -- -- -- -- ND -- 0.79 -- -- mg/L 04/28/21 0.041 0.1 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- mg/L 10/14/21 0.041 0.1 -- -- ND 0.077 J -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- mg/L 04/19/22 0.041 0.1 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- 0.33 -- mg/L 10/20/22 0.041 0.1 -- -- 0.029 J 0.075 J -- -- -- -- -- -- -- -- -- -- 0.18 -- ND -- -- Sulfate as SO4 mg/L 05/05/08 0.25 -- 250 -- -- 25 J 25 J -- -- -- -- 4.7 J -- -- -- -- 40 J -- -- -- ND NC 2L = 250 mg/L mg/L 10/16/09 0.078 -- 250 -- 2.0 J 12 J 27 J -- -- -- -- 23 J 100 J -- -- -- 16 J -- -- -- ND EPA MCL = 250 mg/L mg/L 04/29/10 0.12 -- 250 -- 0.12 14 J 19 J -- -- -- -- 14 J 100 J -- -- -- 27 J -- -- -- ND mg/L 08/02/10 0.12 -- 250 -- 1.5 J 12 J 21 J -- -- -- -- 12 J 100 -- -- -- 15 J -- -- -- ND mg/L 10/25/12 0.04 -- 250 -- 2.0 J 11 J -- -- -- -- -- -- -- -- -- -- 12 J -- 22 J -- ND mg/L 05/02/13 0.04 -- 250 -- 1.8 B 19 B -- -- -- -- -- -- -- -- -- -- 11 B -- 21 B -- ND mg/L 09/24/13 0.04 -- 250 -- 1.7 J 14 J -- -- -- -- -- -- -- -- -- -- 8.9 J -- 21 J -- ND mg/L 04/25/14 2.9 -- 250 -- ND 20 J -- -- -- -- -- -- -- -- -- -- 35 J -- 18 J -- ND mg/L 10/02/14 2.9 -- 250 -- 2.9 14 J -- -- -- -- -- -- -- -- -- -- 12 J -- 22 J -- ND mg/L 04/14/15 2.9 -- 250 -- 2.9 22 J -- -- -- -- -- -- -- -- -- -- 12 J -- 26 J -- ND mg/L 10/07/15 2.9 -- 250 -- -- 15 J -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND mg/L 04/18/16 2.9 -- 250 -- 2.9 16 J -- -- -- -- -- -- -- -- -- -- 36 J -- 26 J -- ND mg/L 09/26/16 2.9 -- 250 -- -- 11 J -- -- -- -- -- -- -- -- -- -- 13 -- 27 J -- ND mg/L 04/25/17 5.8 -- 250 -- 0.25 J 31 J -- -- -- -- -- -- -- -- -- -- 20 J -- 23 J -- ND mg/L 10/17/17 2.9 -- 250 -- -- 8.9 J -- -- -- -- -- -- -- -- -- -- 14 J -- 24 J -- ND mg/L 04/16/18 2.9 -- 250 -- ND ND -- -- -- -- -- -- -- -- -- -- 18 J -- 23 J -- ND mg/L 10/16/18 2.9 5.0 -- -- -- ND -- -- -- -- -- -- -- -- -- -- 19 -- 19 -- ND mg/L 04/12/19 2.9 5.0 -- -- ND 16 -- -- -- -- -- -- -- -- -- -- 59 -- 27 -- ND mg/L 10/07/19 2.9 5.0 -- -- ND 5.3 -- -- -- -- -- -- -- -- -- -- 18 -- 25 -- ND mg/L 04/20/20 2.9 5.0 -- -- 3.0 J ND -- -- -- -- -- -- -- -- -- -- 49 -- 36 -- -- mg/L 10/13/20 2.9 5.0 -- -- ND ND -- -- -- -- -- -- -- -- -- -- 13 -- 23 -- -- mg/L 04/28/21 2.9 5.0 -- -- ND 200 -- -- -- -- -- -- -- -- -- -- 51 -- 39 -- -- mg/L 10/14/21 2.9 5.0 -- -- ND 4.7 J -- -- -- -- -- -- -- -- -- -- 13 -- 35 -- -- mg/L 04/19/22 2.9 5.0 -- -- 3.1 J 11 -- -- -- -- -- -- -- -- -- -- 28 -- 22 -- mg/L 10/20/22 2.9 5.0 -- -- -- ND -- -- -- -- -- -- -- -- -- -- 12 -- 31 -- -- Total Alkalinity as CaCO3 mg/L 10/16/09 42 -- -- -- 19 320 370 -- -- -- -- 59 99 -- -- -- 190 -- -- -- ND (No NC 2L) mg/L 04/29/10 32 -- -- -- 16 350 330 -- -- -- -- 70 110 -- -- -- 110 -- -- -- ND (No EPA MCL) mg/L 08/02/10 40 -- -- -- 20 580 460 -- -- -- -- 51 100 -- -- -- 320 -- -- -- ND mg/L 10/25/12 60 -- -- -- 24 740 -- -- -- -- -- -- -- -- -- -- 360 -- 230 -- ND mg/L 05/02/13 70 -- -- -- 17 570 -- -- -- -- -- -- -- -- -- -- 42 -- 240 -- ND mg/L 09/24/13 70 -- -- -- 26 780 -- -- -- -- -- -- -- -- -- -- 450 -- 260 -- ND mg/L 04/25/14 70 -- -- -- 19 600 -- -- -- -- -- -- -- -- -- -- 19 -- 220 -- ND mg/L 10/02/14 70 -- -- -- 24 830 -- -- -- -- -- -- -- -- -- -- 420 -- 310 -- ND mg/L 04/14/15 140 -- -- -- 21 690 -- -- -- -- -- -- -- -- -- -- 380 -- 330 -- ND mg/L 10/07/15 84 -- -- -- -- 1000 -- -- -- -- -- -- -- -- -- -- 490 -- 190 -- ND mg/L 04/18/16 140 -- -- -- 15 840 -- -- -- -- -- -- -- -- -- -- 100 -- 320 -- ND mg/L 09/26/16 70 -- -- -- -- 960 -- -- -- -- -- -- -- -- -- -- 410 -- 360 -- ND mg/L 04/25/17 14 -- -- -- 28 880 -- -- -- -- -- -- -- -- -- -- 400 -- 81 -- ND mg/L 10/17/17 70 -- -- -- -- 1100 -- -- -- -- -- -- -- -- -- -- 410 -- 370 -- ND mg/L 04/16/18 14 -- -- 19 810 310 400 ND mg/L 10/16/18 14 15 -- -- -- 1000 -- -- -- -- -- -- -- -- -- -- 77 -- 120 -- ND mg/L 04/12/19 14 15 -- -- ND 900 -- -- -- -- -- -- -- -- -- -- 81 -- 370 -- ND mg/L 10/07/19 14 15 -- -- ND 950 -- -- -- -- -- -- -- -- -- -- 340 -- 470 -- ND mg/L 04/20/20 14 15 -- -- ND 1700 -- -- -- -- -- -- -- -- -- -- 110 -- 380 -- -- mg/L 10/13/20 14 15 -- -- 14 J 1200 -- -- -- -- -- -- -- -- -- -- 370 -- 200 -- -- mg/L 04/28/21 14 15 -- -- ND 960 -- -- -- -- -- -- -- -- -- -- 48 -- 450 -- -- mg/L 10/14/21 14 15 -- -- 15 1100 -- -- 300 -- 820 -- 170 670 480 -- 360 -- 470 -- -- mg/L 04/19/22 14 15 -- -- 21 1000 -- -- -- -- -- -- -- -- -- -- 240 -- 220 -- mg/L 10/20/22 5 5 -- -- 39 1100 -- -- -- -- -- -- -- -- -- -- 370 -- 500 -- -- Total Organic Carbon mg/L 05/05/08 0.32 -- -- -- -- 15 2.2 -- -- -- -- 1.3 ND -- -- -- 9.2 -- -- -- ND (No NC 2L) mg/L 10/16/09 0.32 -- -- -- ND 30 0.88 J -- -- -- -- 7.3 2.5 -- -- -- 2.5 -- -- -- ND (No EPA MCL) mg/L 10/16/09 0.32 -- -- -- ND 30 0.88 J -- -- -- -- 7.3 2.5 -- -- -- 2.5 -- -- -- ND mg/L 04/29/10 0.32 -- -- -- ND 23 2.0 -- -- -- -- 3.5 2.3 -- -- -- 4.5 -- -- -- ND mg/L 08/02/10 0.32 -- -- -- 0.40 J 34 1.3 -- -- -- -- 2.8 2.3 -- -- -- 3.0 -- -- -- ND mg/L 10/25/12 0.32 -- -- -- 0.55 J 45 -- -- -- -- -- -- -- -- -- -- 1.7 -- 1.2 -- ND mg/L 05/02/13 0.32 -- -- -- 0.32 19 -- -- -- -- -- -- -- -- -- -- 0.93 J -- 0.84 J -- ND mg/L 09/24/13 0.32 -- -- -- 0.32 48 -- -- -- -- -- -- -- -- -- -- 1.9 -- 1.6 -- ND mg/L 04/25/14 0.32 -- -- -- ND 36 -- -- -- -- -- -- -- -- -- -- 6.8 -- 0.56 J -- ND mg/L 10/02/14 0.32 -- -- -- 0.51 J 48 -- -- -- -- -- -- -- -- -- -- 4.9 -- 1.5 -- ND mg/L 04/14/15 0.34 -- -- -- 0.34 33 -- -- -- -- -- -- -- -- -- -- 1.4 -- 2.0 -- ND mg/L 10/07/15 0.34 -- -- ND -- 46 -- -- -- -- -- -- -- -- ND -- -- ND 190 ND ND mg/L 04/18/16 0.34 -- -- 0.48 J 37 mg/L 09/26/16 0.34 -- -- -- -- 58 -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/17 0.34 -- -- -- ND 28 -- -- -- -- -- -- -- -- -- -- 4.3 -- 2.4 -- ND mg/L 10/17/17 0.34 -- -- -- -- 69 -- -- -- -- -- -- -- -- -- -- 2.6 -- 3.3 -- ND mg/L 04/16/18 0.34 -- -- -- 0.51 J 37 -- -- -- -- -- -- -- -- -- -- 2.2 -- 3.0 -- ND mg/L 10/16/18 0.34 1.0 -- -- -- 56 -- -- -- -- -- -- -- -- -- -- 5.2 -- 1.0 -- ND mg/L 04/12/19 0.34 1.0 -- -- 1.4 39 -- -- -- -- -- -- -- -- -- -- 3.8 -- 7.0 -- ND mg/L 10/07/19 0.34 1.0 -- -- ND 46 -- -- -- -- -- -- -- -- -- -- 2.4 -- 2.2 -- ND mg/L 04/20/20 0.34 1.0 -- -- ND 45 -- -- -- -- -- -- -- -- -- -- 2.8 -- 3.3 -- -- mg/L 10/13/20 0.34 1.0 -- -- ND 52 -- -- -- -- -- -- -- -- -- -- 5.2 -- 2.4 -- -- mg/L 04/28/21 0.34 1.0 -- -- 0.7 J 49 -- -- -- -- -- -- -- -- -- -- 5.5 -- 4.6 -- -- mg/L 10/14/21 0.34 1.0 -- -- 2.3 68 -- -- -- -- -- -- -- -- -- -- 4.5 -- 3.7 -- -- mg/L 04/19/22 0.34 1.0 -- -- 1.5 50 -- -- -- -- -- -- -- -- -- -- 3.8 -- 2.8 -- -- mg/L 10/20/22 0.50 1.0 -- -- 0.82 J 77 -- -- -- -- -- -- -- -- -- -- 4.1 -- 2.4 -- -- Pyruvic Acid mg/L 10/16/09 0.02 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND (No NC 2L) mg/L 04/29/10 0.14 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND (No EPA MCL) mg/L 08/02/10 0.14 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 10/25/12 0.01 -- 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-- -- -- ND -- ND -- ND mg/L 05/02/13 0.0015 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/24/13 0.0015 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/14 0.0015 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/02/14 0.00062 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/14/15 0.00062 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/07/15 0.00062 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND mg/L 04/18/16 0.00062 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/26/16 0.00038 -- -- - 0.0015 ND ND ND mg/L 04/25/17 0.0015 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/17/17 0.0015 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/16/18 0.0015 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/16/18 0.0015 0.003 -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/12/19 0.0015 0.003 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/07/19 0.0015 0.003 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/20/20 0.0015 0.003 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- mg/L 10/13/20 0.0015 0.003 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- mg/L 04/28/21 0.0051 0.006 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- mg/L 10/14/21 0.0051 0.006 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- mg/L 04/19/22 0.0051 0.006 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- m /L 10/19/22 0.0003 0.001 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- Methane mg/L 05/05/08 0.0004 -- -- -- -- 0.135 3.49 -- -- -- -- 0.009 0.003 -- -- -- 0.002 -- -- -- ND (No NC 2L) mg/L 10/16/09 0.0002 -- -- -- 0.001 0.266 1.06 -- -- -- -- 0.45 0.023 -- -- -- 0.085 -- -- -- ND (No EPA MCL) mg/L 04/29/10 0.0002 -- -- -- ND 0.007 1.47 -- -- -- -- 0.029 ND -- -- -- 0.006 -- -- -- ND mg/L 08/02/10 0.0002 -- -- -- ND 0.213 1.30 -- -- -- -- 0.010 0.003 -- -- -- 0.03 -- -- -- ND mg/L 10/25/12 0.0043 -- -- -- ND 0.351 -- -- -- -- -- -- -- -- -- -- 0.00348 -- 0.0731 -- ND mg/L 05/02/13 0.0004 -- -- -- ND 0.00412 -- -- -- -- -- -- -- -- -- -- ND -- 0.0332 -- ND mg/L 09/24/13 0.0004 -- -- -- ND 0.0534 -- -- -- -- -- -- -- -- -- -- 0.0113 -- 0.0542 -- ND mg/L 04/25/14 0.0004 -- -- -- ND 20.8 -- -- -- -- -- -- -- -- -- -- ND -- 23 -- ND mg/L 10/02/14 0.0022 -- -- -- 0.00044 0.211 -- -- -- -- -- -- -- -- -- -- 0.0226 -- 0.0968 -- ND mg/L 04/14/15 0.00044 -- -- -- 0.000706 J 0.00509 -- -- -- -- -- -- -- -- -- -- 0.00187 -- 0.0273 -- ND mg/L 10/07/15 0.0044 -- -- -- -- 0.277 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND mg/L 04/18/16 0.00044 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- 0.00316 -- 0.043 -- ND mg/L 09/26/16 0.00044 -- -- -- -- 0.0778 -- -- -- -- -- -- -- -- -- -- 0.0258 0.0773 ND mg/L 04/25/17 0.00044 -- -- -- 0.00214 0.0345 -- -- -- -- -- -- -- -- -- -- 0.000621 J -- 0.00112 -- ND mg/L 10/17/17 0.00044 -- -- -- -- 0.129 -- -- -- -- -- -- -- -- -- -- 0.0243 -- 0.155 -- ND mg/L 04/16/18 0.00044 -- -- -- ND 0.0209 -- -- -- -- -- -- -- -- -- -- 0.00142 -- 0.165 -- ND mg/L 10/16/18 0.00045 0.001 -- -- -- 0.0154 -- -- -- -- -- -- -- -- -- -- 0.00248 -- 0.003 -- ND mg/L 04/12/19 0.00045 0.001 -- -- ND 0.0224 -- -- -- -- -- -- -- -- -- -- 0.00628 -- 0.056 -- ND mg/L 10/07/19 0.00045 0.001 -- -- ND 0.0587 -- -- -- -- -- -- -- -- -- -- 0.006 -- 0.0444 -- ND mg/L 04/20/20 0.00045 0.001 -- -- ND 0.0166 -- -- -- -- -- -- -- -- -- -- 0.00268 -- 0.024 -- -- mg/L 10/13/20 0.00045 0.001 -- -- ND 0.0686 -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- mg/L 04/28/21 0.004 0.005 -- -- ND 0.0547 -- -- -- -- -- -- -- -- -- -- ND -- 0.0511 -- -- mg/L 10/14/21 0.004 0.005 -- -- ND 0.196 -- -- -- -- -- -- -- -- -- -- ND -- 0.111 -- -- mg/L 04/19/22 0.004 0.005 -- -- ND 0.0576 -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- mg/L 10/20/22 0.00057 0.00058 -- -- 0.012 0.810 -- -- -- -- -- -- -- -- -- -- 0.014 -- 0.130 -- -- Ferrous Iron mg/L 05/05/08 0.042 -- -- -- -- ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- -- mg/L 05/02/13 -- -- -- -- 0.02 0.66 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- mg/L 04/24/14 -- -- -- -- 0.03 0.54 -- -- -- -- -- -- -- -- -- -- 0.57 -- 0.77 -- -- mg/L 04/24/15 -- -- -- -- 0.05 0.51 -- -- -- -- -- -- -- -- -- -- ND -- 0.72 -- -- mg/L 04/20/16 -- -- -- -- 0.03 2.38 -- -- -- -- -- -- -- -- -- -- 1.47 -- 0.5 -- -- (field) mg/L 04/25/17 -- -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND (field) mg/L 10/17/17 -- -- -- -- -- 1.6 -- -- -- -- -- -- -- -- -- -- 1.2 -- 0.8 (field) mg/L 04/20/20 -- -- -- -- 0.0 -- -- -- -- -- -- -- -- -- -- -- 0.0 -- 1.0 (field) mg/L 04/28/21 -- -- -- -- 0.0 1.75 -- -- -- -- -- -- -- -- -- -- 0.0 -- 2.0 field m /L 04/19/22 -- -- -- -- -- 2.5 -- -- -- -- -- -- -- -- -- -- 0.0 -- 0.0 -- -- Notes: B = blank -qualified data H = Sample was prepped or analyzed beyond the specified holding time. p = The %RPD between the primary and confirmation clumn/detector is >40%. The lower value has been reported. Shaded = concentrations above applicable EPA MCL have been shaded. Bold = concentrations above applicable IMAC and/or NC 2L have been bolded. Data prior to April 2017 provided by S&ME Engineering. # = EPA Action Level * = EPA Secondary MCL Blanks = field, trip and method blanks Laboratory method blank data was unavailable for data prior to April 2017. However, B flags for the 04/16/09, 10/07/09, and 10/11 /10 were present on laboratory electronic files. MDL = laboratory method detection limit ug/L = micrograms per liter mg/L = milligrams per liter nM = nano mols SWS Reporting Limit = NCPQL prior to 2007 and NCSWSL starting on 01/18/07 -- = no data available or no limit established NC 2L = North Carolina Water Quality Standard ND = not detected above the laboratory detection limit or stated reporting limit. J = Prior to the November 2018 event, J flags are estimated values below the SWS Reporting limit. Beginning with the November 2018 event, J flags are estimated values between MDL and PQL. EPA MCL = United States Environmental Protection Agency Maximum Contaminant Limit Compliance monitoring wells II-1, II-7, II-713 also serve as sentinel wells for the corrective action program. The following dilutions were noted for the October 2022 event: Chloride 10x @ II-1 and 1,4-dioxane 10x @ II-1 and II-6 and 5x @ II-8. 17of17 February 2023 TABLE 5 19131339.106 Summary of Groundwater Field Parameters White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Assessment Detected Monitoring Reporting Sample Upgradient Monitoring Wells Compliance Downgraient Monitoring Wells Monitoring Sentinel Monitoring Wells Constituent/Parameter Units Date Well MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 pH (Field) S. U. 03/25/99 5.94 6.82 5.69 5.98 6.17 NI 5.92 6.39 5.99 NI 6.48 NI NI NI NI NI NI S. U. 09/22/99 6.15 6.05 5.77 6.65 6.12 NI 5.94 6.24 6.25 NI 6.49 NI NI NI NI NI NI S. U. 03/27/00 6.61 7.76 -- 6.27 6.09 NI 6.34 7.11 6.06 NI 6.39 NI NI NI NI NI NI S. U. 09/13/00 6.70 6.62 -- 6.67 6.67 NI 6.49 6.72 6.41 NI 6.39 NI NI NI NI NI NI S. U. 03/13/01 6.55 5.71 -- 7.21 6.38 NI 6.01 6.01 5.31 -- 6.31 NI NI NI NI NI NI S. U. 09/13/01 6.29 5.20 6.09 6.88 6.09 NI 6.03 6.43 6.04 10.71 6.28 NI NI NI NI NI NI S. U. 03/08/02 7.48 5.76 6.21 7.06 6.10 NI 6.05 6.53 5.57 10.15 6.38 NI NI NI NI NI NI S. U. 09/18/02 6.44 6.65 6.25 7.01 6.17 NI 6.19 6.45 5.70 10.59 6.88 NI NI NI NI NI NI S. U. 04/15/03 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI S. U. 10/15/03 6.75 5.64 6.33 7.27 6.37 NI 6.18 6.42 5.63 10.76 6.88 NI NI NI NI NI NI S. U. 03/24/04 8.02 7.38 8.20 8.32 8.07 NI 8.65 7.94 7.67 10.89 7.67 NI NI NI NI NI NI S. U. 09/22/04 6.96 6.17 6.43 7.13 6.43 NI 6.47 6.63 5.87 7.33 7.33 NI NI NI NI NI NI S. U. 05/09/05 8.58 8.16 8.01 8.74 8.37 NI 8.47 8.04 8.03 10.77 8.11 NI NI NI NI NI NI S. U. 10/11/05 6.50 5.52 5.95 7.22 6.11 NI 6.00 6.41 5.48 11.30 6.18 -- NI -- NI NI NI S. U. 04/24/06 -- -- -- -- -- N I -- -- -- -- -- -- N I -- N I N I N I S. U. 10/19/06 -- 5.42 6.02 6.85 5.96 NI 6.02 6.35 5.29 11.16 6.18 -- NI -- NI NI NI S. U. 04/12/07 6.35 5.16 6.39 7.07 6.13 NI 6.06 6.45 5.62 11.17 6.28 -- NI -- NI NI NI S. U. 09/26/07 6.49 5.19 6.10 7.06 5.90 NI 6.03 6.28 5.58 11.20 6.11 -- NI -- NI NI NI S. U. 04/29/08 6.48 5.66 6.31 6.86 5.93 NI 6.44 5.53 9.50 10.81 6.27 6.54 NI -- NI NI NI S. U. 12/03/08 7.29 6.47 7.04 7.55 6.00 NI 7.10 6.35 6.10 11.63 6.90 -- NI -- NI NI NI S. U. 04/17/09 7.29 6.47 7.04 7.55 6.62 NI 7.10 6.35 6.10 11.63 6.90 7.74 NI -- NI NI NI S. U. 10/13/09 9.18 8.69 8.58 9.51 8.39 NI 8.71 8.89 8.29 13.60 8.53 9.15 NI -- NI NI NI S. U. 04/28/10 6.60 5.35 6.23 6.84 5.79 NI 6.24 6.41 5.50 10.49 6.18 6.68 NI 6.14 NI NI NI S. U. 08/02/10 -- -- 6.87 7.48 -- NI -- -- 6.15 11.14 -- -- NI 7.03 6.57 7.40 6.54 S. U. 10/11/10 7.50 6.44 6.95 7.54 6.62 NI 7.05 7.38 6.28 11.41 7.04 7.46 NI 6.99 6.47 7.61 6.72 S. U. 05/ 11 / 11 -- -- -- -- -- N I -- -- -- -- -- -- N I -- -- -- -- S. U. 10/06/11 7.61 6.25 6.87 7.55 6.29 NI 7.06 7.43 5.96 12.24 7.00 7.65 6.95 6.99 5.46 7.38 6.31 S. U. 04/17/12 7.83 6.81 7.25 7.90 6.58 NI 7.73 7.46 6.20 12.21 7.33 8.02 -- -- -- -- -- S. U. 10/22/12 7.88 6.43 7.48 8.37 6.91 NI 8.15 8.16 6.67 12.70 7.78 7.79 -- -- -- -- -- S. U. 04/24/13 8.29 6.83 7.71 8.37 7.16 NI 7.83 7.84 6.90 12.94 7.37 8.38 7.84 8.01 7.84 8.14 6.95 S. U. 09/10/13 8.33 6.71 7.30 8.13 6.78 7.11 7.67 7.81 7.14 12.31 7.16 7.96 7.58 7.65 6.76 7.93 7.13 S. U. 04/23/14 8.40 7.75 7.82 7.92 7.04 7.41 7.72 7.06 7.29 12.27 6.56 7.82 8.41 7.26 8.13 8.86 8.21 S. U. 10/03/14 7.69 6.55 7.28 7.54 6.69 6.91 7.14 7.44 6.62 10.39 7.14 7.79 7.45 7.43 7.53 7.65 7.08 S. U. 04/14/15 6.76 5.70 6.33 6.75 5.77 5.92 6.27 5.85 5.71 9.37 6.22 6.61 6.23 6.33 5.76 6.54 6.32 S. U. 10/05/15 6.47 -- 6.02 6.56 5.80 5.82 6.34 6.66 5.73 8.83 6.00 6.39 6.09 6.09 5.27 6.21 5.51 S. U. 04/19/16 6.36 4.90 6.29 6.41 5.66 5.96 6.22 5.98 5.54 9.97 6.10 6.46 5.90 5.57 -- -- -- S. U. 09/26/16 6.54 -- 6.20 6.00 5.63 5.90 6.22 6.58 5.58 9.22 6.07 6.42 6.16 6.11 5.68 6.45 5.83 S. U. 03/21/17 -- -- 6.24 6.50 -- 5.78 -- 6.40 5.52 -- -- -- -- -- -- -- -- S. U. 04/25/17 6.46 5.45 6.16 6.47 5.56 5.68 6.28 5.52 4.88 8.92 6.15 6.49 5.94 5.93 5.64 5.98 5.93 S. U. 10/17/17 6.55 -- 6.28 6.44 5.73 5.99 6.39 6.74 5.46 8.52 7.58 6.58 6.21 6.16 5.89 6.53 6.01 (verification event) S. U. 12/21/17 -- -- 6.29 -- 5.63 -- -- 6.59 -- -- -- -- -- -- -- -- -- S. U. 04/16/18 6.50 5.58 6.37 6.31 5.45 5.72 6.19 5.92 5.55 7.72 6.08 6.32 6.25 6.24 5.92 6.45 6.10 S. U. 10/16/18 6.39 -- 6.29 6.52 5.53 5.85 6.23 6.47 5.44 7.72 6.21 6.61 6.37 5.86 5.39 5.96 5.89 (verification event) S. U. 02/20/19 -- -- -- -- 5.66 -- -- -- -- -- -- -- -- -- -- -- 6.21 S. U. 04/09/19 6.67 4.74 6.56 6.47 5.67 5.96 6.38 5.76 5.43 6.70 6.16 6.90 6.20 5.69 6.28 6.43 6.40 S. U. 10/07/19 6.43 5.09 5.00 6.51 5.61 6.05 6.53 6.63 6.94 8.71 6.32 6.68 6.33 6.48 5.77 6.47 6.47 (verification event) S. U. 01/22/20 -- -- 6.37 -- -- -- -- -- -- -- 6.03 -- -- -- -- -- 6.16 S. U. 04/20/20 6.49 4.94 6.37 6.59 5.58 6.06 6.52 6.23 5.48 7.43 6.17 6.59 6.30 5.93 5.53 6.38 6.21 S. U. 10/13/20 5.90 4.99 6.36 6.46 5.60 5.78 6.27 6.48 5.15 6.88 6.17 6.07 6.22 6.11 5.96 6.20 5.80 S. U. 04/28/21 6.77 5.45 6.59 6.90 5.81 6.19 6.58 5.96 5.69 7.46 6.28 6.87 6.59 5.75 5.99 6.54 6.43 S. U. 10/14/21 6.29 5.17 6.20 6.46 5.51 5.82 6.26 6.35 5.48 7.00 6.07 6.05 6.16 6.06 5.81 6.12 5.83 S. U. 04/19/22 6.59 5.95 6.44 7.48 6.62 6.92 7.12 6.80 5.50 7.22 6.16 6.42 7.15 6.19 7.22 6.31 7.16 S. U. 10/19/22 6.44 5.14 6.40 6.48 5.56 5.97 6.46 6.57 5.98 7.46 6.18 6.62 6.14 6.08 5.71 6.23 6.18 Specific Conductance (Field) us/cm 05/25/99 299 81 771 1475 2007 NI 599 1556 106 -- 594 NI NI NI NI NI NI us/cm 09/22/99 320 24 833 609 141 NI 580 752 63 -- 55 NI NI NI NI NI NI us/cm 03/27/00 353 101 -- 571 970 NI 540 204 89 -- 604 NI NI NI NI NI NI us/cm 09/13/00 335 44 -- 595 275 NI 553 436 96 -- 604 NI NI NI NI NI NI us/cm 03/13/01 7520 19102 -- 6223 6128 NI 11296 9121 8287 -- 9472 NI NI NI NI NI NI us/cm 09/13/01 88838 173392 59174 54857 40741 NI 53504 43038 183942 86446 33529 NI NI NI NI NI NI us/cm 03/08/02 676 223 1497 1298 464 NI 935 896 311 578 1365 NI NI NI NI NI NI us/cm 09/18/02 658 142 1591 1200 356 NI 862 2987 163 572 1351 NI NI NI NI NI NI us/cm 04/ 15/03 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI us/cm 10/15/03 480 44 1308 820 808 NI 662 1970 113 794 1289 NI NI NI NI NI NI us/cm 03/24/04 428 56 221 845 1327 NI 802 1411 137 851 867 NI NI NI NI NI NI us/cm 09/22/04 472 46 1800 958 530 NI 732 1491 128 468 1448 NI NI NI NI NI NI us/cm 05/09/05 434 45 1610 970 1109 NI 785 2270 187 920 1520 NI NI NI NI NI NI us/cm 10/11/05 576 92 1960 1123 482 NI 871 4450 295 966 1690 -- NI -- NI NI NI us/cm 04/24/06 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI us/cm 10/19/06 -- 57 2210 1120 465 NI 952 4110 152 890 2020 -- NI -- NI NI NI us/cm 04/12/07 514 47 2180 1040 434 NI 868 2070 242 879 2110 -- NI -- NI NI NI us/cm 09/26/07 582 50 2300 1035 414 NI 891 1010 246 885 2120 -- NI -- NI NI NI us/cm 04/29/08 45.7 7 2700 108 453 NI 34 13.1 9.5 70.3 238 121.7 NI -- NI NI NI us/cm 12/03/08 5390 71 2640 1053 442 NI 385 114 160 648 2660 -- NI -- NI NI NI us/cm 04/17/09 539 71 2640 1053 442 NI 385 114 160 648 2660 1.06 NI -- NI NI NI us/cm 10/13/09 552 70 2820 1145 457 NI 707 4110 492 639 2730 2.83 NI NI NI NI us/cm 04/28/10 439 42 2320 919 388 NI 536 2460 242 520 2370 909 NI 497 NI NI NI us/cm 08/02/10 -- -- 2460 922 -- NI -- -- 194 505 -- -- NI 641 207 478 1021 us/cm 10/11/10 446 60 2590 177 397 NI 615 3080 168 538 2530 1028 NI 535 158 498 858 us/cm 05/11/11 -- -- -- -- -- NI -- -- -- -- -- -- NI -- -- -- -- us/cm 10/06/11 447 78 3020 938 413 NI 460 3100 172 481 2530 931 562 535 147 363 642 us/cm 04/17/12 416 65 2470 94 424 NI 38 534 272 489 2850 767 -- -- -- -- -- us/cm 10/22/12 399 71 2760 95 420 NI 36 2.6 360 498 2990 950 -- -- -- -- -- us/cm 04/24/13 410 69 2150 97 464.0 NI 34 260 233 505 3110 863 532 755 211 491 821 us/cm 09/10/13 414 57 2800 92 455 167 461 2.74 447 493 3280 975 553 813 241 556 882 us/cm 04/23/14 395 56 2490 9870 479 1800 197 106 224 500 3380 596 544 188 202 529 803 us/cm 10/03/14 425 48 3250 1029 488 1730 509 3190 559 514 3530 995 567 854 375 628 1124 us/cm 04/14/15 268 34 1918 678 345 1153 266 188 246 337 2199 530 366 509 121 389 561 us/cm 10/05/15 304 -- 2617 757 375 1369 241 1245 328 395 2922 387 442 625 150 298 270 us/cm 04/19/16 323 38 2838 1047 477 1747 567 365 542 493 3691 851 563 289 -- -- -- us/cm 09/26/16 340 -- 2618 988 457 1611 815 2522 646 485 3124 768 548 758 329 712 845 us/cm 03/21/17 -- -- 3189 987 -- 1773 -- 1876 610 -- -- -- -- -- -- -- -- us/cm 04/25/17 362 56 2996 1017 480 1587 379 68 100 472 3916 349 527 730 191 213 234 us/cm 10/17/17 367 -- 2929 946 498 1733 781 2987 643 565 3839 612 547 783 262 778 806 (verification event) us/cm 12/21/17 -- -- 3058 -- 482 -- -- 2986 -- -- -- -- -- -- -- -- -- us/cm 04/16/18 321 99 3622 992 540 1915 259 482 196 696 3147 621 544 778 272 900 298 us/cm 10/16/18 317 -- 2776 836 407 1650 448.4 1102 142 526 3462 489.5 144 174.9 208 258.7 324 (verification event) uS/cm 02/20/19 -- -- -- -- 459 -- -- -- -- -- -- -- -- -- -- -- 306 us/cm 04/09/19 368 34 2619 1001 455 1863 355 135 180 664 4158 455 531 383 539 844 439 us/cm 10/07/19 287 31 339 911 432 1414 999 1981 88 86 3377 701 491 97 522 111 81 (verification event) us/cm 01/22/20 -- -- 2902 -- -- -- -- -- -- -- 4215 -- -- -- -- -- 517 us/cm 04/20/20 424 31 3056 800 360 1298 393 755 264 524 4327 716 416 377 220 691 851 us/cm 10/13/20 393 50 2659 940 414 1389 307 1092 187 587 3878 370 546 845 302 514 372 us/cm 04/28/21 425 45 2853 902 408 1402 331 244 328 675 4353 687 541 319 219 941 695 us/cm 10/14/21 345 40 2917 768 356 1284 230 1736 632 657 4220 363 444 688 305 945 494 us/cm 04/19/22 397 45 3093 915 331 1318 125 145 195 691 4471 294 480 546 225 462 323 us/cm 04/19/22 296 37 2784 851 360 1276 506 2444 669 603 3802 539 456 746 225 922 526 Temperature (Field) °C 05/25/99 14.42 14.90 14.55 14.65 14.50 NI 11.30 13.30 12.95 -- 16.02 NI NI NI NI NI NI °C 09/22/99 14.84 15.01 16.65 15.38 15.37 NI 17.78 16.73 15.66 -- 18.35 NI NI NI NI NI NI °C 03/27/00 14.30 14.66 -- 14.58 15.01 NI 11.93 12.89 13.70 -- 16.27 NI NI NI NI NI NI °C 09/13/00 15.70 16.40 -- 16.07 16.06 NI 18.97 17.15 15.82 -- 16.27 NI NI NI NI NI NI °C 03/13/01 15.04 16.18 -- 15.57 15.26 NI 11.38 13.67 14.24 -- 16.41 NI NI NI NI NI NI °C 09/13/01 15.73 15.65 17.28 16.54 17.65 NI 20.08 18.24 16.18 20.68 18.10 NI NI NI NI NI NI °C 03/08/02 14.25 14.74 13.73 15.26 15.51 NI 12.31 12.70 14.08 14.45 16.06 NI NI NI NI NI NI °C 09/18/02 10.56 10.26 10.89 11.45 12.53 NI 14.29 11.87 10.62 10.35 13.21 NI NI NI NI NI NI °C 04/ 15/03 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI °C 10/15/03 14.67 14.78 16.00 15.78 16.39 NI 17.67 16.17 15.28 15.50 16.50 NI NI NI NI NI NI °C 03/24/04 14.42 15.05 13.31 15.48 14.93 NI 11.23 13.58 13.97 14.92 15.54 NI NI NI NI NI NI °C 09/22/04 16.30 15.40 16.10 16.60 16.90 NI 19.10 17.00 16.50 15.50 16.60 NI NI NI NI NI NI °C 05/09/05 19.24 22.78 15.99 20.79 20.32 NI 15.87 12.58 19.11 19.36 17.37 NI NI NI NI NI NI °C 10/11/05 12.80 20.70 17.60 18.70 23.10 NI 17.60 18.70 17.00 15.70 16.60 -- NI -- NI NI NI °C 04/24/06 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI °C 10/19/06 -- 19.62 18.08 17.68 18.35 NI 19.47 18.30 17.99 17.40 16.74 -- NI -- NI NI NI °C 04/12/07 14.57 14.72 13.47 19.15 17.91 NI 10.04 15.55 17.12 17.13 14.23 -- NI -- NI NI NI °C 09/26/07 23.41 22.80 22.15 23.49 22.64 NI 17.58 29.18 17.45 15.95 18.01 -- NI -- NI NI NI oC 04/29/08 14.55 16.16 11.22 15.48 15.70 NI 16.60 14.60 15.60 13.51 14.19 13.95 NI -- NI NI NI oC 12/03/08 14.53 16.62 12.67 16.51 16.82 NI 15.98 11.96 16.18 13.38 9.47 -- NI -- NI NI NI oC 04/17/09 14.53 16.62 12.67 16.51 16.82 NI 15.98 11.96 16.18 13.38 9.47 11.41 NI -- NI NI NI °C 10/13/09 13.65 18.50 13.46 14.92 14.05 NI 18.60 19.07 12.15 11.70 21.48 12.01 NI NI NI NI °C 04/28/10 14.56 21.23 13.88 14.78 18.65 NI 22.07 14.44 18.12 14.19 18.22 15.94 NI 16.37 NI NI NI °C 08/02/10 -- -- 20.34 22.55 -- NI -- -- 25.17 23.19 -- -- NI 20.45 °C 10/11/10 18.37 23.08 17.55 12.92 16.29 NI 17.51 15.71 18.24 17.16 18.01 21.81 NI 14.03 °C 05/ 11 / 11 -- -- -- -- -- NI -- -- -- -- -- -- NI -- -- -- -- °C 10/06/11 18.70 22.02 20.87 19.70 19.93 NI 19.08 19.13 18.71 18.42 16.72 18.68 19.11 14.03 18.37 16.81 17.35 °C 04/17/12 14.07 15.59 19.33 19.05 24.35 NI 16.75 13.72 24.72 21.74 14.18 14.12 -- -- -- -- -- °C 10/22/12 12.98 26.91 15.93 11.32 20.58 NI 18.34 15.15 14.00 10.97 17.68 16.29 -- -- -- -- -- °C 04/24/13 13.74 14.93 14.10 15.88 16.93 NI 15.31 13.42 14.14 14.58 15.10 14.53 14.78 13.44 13.09 14.28 12.31 °C 09/10/13 23.09 19.75 20.69 15.40 21.83 23.08 21.42 23.13 18.09 17.92 26.26 21.24 16.44 15.89 18.95 20.21 18.81 °C 04/23/14 16.52 17.52 12.21 17.30 18.61 18.67 16.49 17.49 10.88 8.38 17.51 16.50 18.73 14.78 14.45 17.73 18.66 °C 10/03/14 11.86 15.03 19.84 14.99 22.00 23.49 25.12 19.55 19.67 21.04 22.95 21.30 15.07 18.89 16.29 19.15 18.99 °C 04/14/15 13.96 15.23 15.06 17.58 17.53 17.84 19.26 16.31 17.61 17.93 13.64 12.79 16.82 12.07 12.02 13.28 12.04 °C 10/05/15 15.81 -- 19.91 15.46 16.27 16.12 18.61 16.17 17.48 18.75 18.65 16.96 17.50 14.78 19.57 17.46 17.73 °C 04/19/16 16.29 17.52 15.86 20.67 15.36 18.94 19.78 17.26 18.30 20.43 20.86 14.61 13.64 16.46 -- -- -- °C 09/26/16 18.06 -- 19.30 21.82 16.75 18.73 22.56 17.92 19.11 18.66 22.22 19.82 20.45 17.18 18.00 17.86 17.54 °C 03/21/17 -- -- 18.27 18.57 -- 15.12 -- 18.02 17.22 -- -- -- -- -- -- -- -- °C 04/25/17 14.35 15.79 14.21 17.68 17.07 14.78 13.99 17.00 15.32 16.61 16.37 15.69 16.82 15.00 15.07 15.68 14.76 °C 10/17/17 14.77 -- 16.00 17.37 17.01 17.53 19.71 16.70 16.33 16.68 17.85 18.85 17.67 15.84 17.32 16.38 16.49 (verification event) °C 12/21/17 -- -- 15.22 -- 16.27 -- -- 13.83 -- -- -- -- -- -- -- -- -- °C 04/16/18 14.3 15.4 12.9 16.9 17.1 16.4 15.6 15.1 16.1 16.2 17.7 14.6 15.3 13.1 12.6 14.4 13.3 °C 10/16/18 16.3 -- 17.1 17.0 16.6 15.8 18.1 16.7 16.4 16.5 17.5 19.0 18.4 16.8 19.5 18.3 17.8 (verification event) °C 02/20/19 -- -- -- -- 14.4 -- -- -- -- -- -- -- -- -- -- -- 11.1 °C 04/09/19 15.7 17.1 13.6 16.7 17.3 14.1 14.5 14.6 15.2 16.5 17.9 16.7 17.5 13.5 13.1 13.8 13.7 °C 10/07/19 17.7 18.4 17.6 18.5 19.4 17.0 18.8 17.8 17.8 18.1 18.4 18.4 17.0 16.1 18.2 17.1 17.0 (verification event) °C 01/22/20 -- -- 14.0 -- -- -- -- -- -- -- 16.2 -- -- -- -- -- 10.8 °C 04/20/20 15.2 15.7 14.2 16.7 16.7 14.8 14.1 14.3 13.6 15.8 17.1 16.2 15.8 13.7 14.0 14.3 14.3 °C 10/13/20 17.1 16.7 17.6 18.0 18.1 16.2 17.3 17.8 16.6 15.8 19.0 17.3 18.2 16.6 18.6 18.1 17.2 °C 04/28/21 14.8 16.1 14.0 18.0 18.0 14.8 14.3 15.0 16.2 16.6 16.7 14.8 16.7 14.2 15.5 14.8 15.0 °C 10/14/21 15.5 16.7 16.5 18.8 19.4 16.6 20.1 17.0 17.1 17.3 18.2 19.3 17.1 16.5 19.3 17.2 16.0 °C 04/19/22 15.3 15.2 12.8 15.6 15.7 13.9 11.6 13.2 12.0 13.5 16.4 14.5 14.6 12.7 11.9 13.2 13.3 °C 10/19/22 15.2 15.0 16.0 16.8 15.2 14.9 16.7 15.4 15.8 16.0 17.3 15.4 16.5 15.5 17.0 16.7 15.3 1 of 2 February 2023 TABLE 5 19131339.106 Summary of Groundwater Field Parameters White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Assessment Detected Monitoring Reporting Sample Upgradient Monitoring Wells Compliance Downgraient Monitoring Wells Monitoring Sentinel Monitoring Wells Constituent/Parameter Units Date Well MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Turbidity (Field) NTU 05/25/99 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 09/22/99 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 03/27/00 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 09/13/00 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 03/13/01 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 09/13/01 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 03/08/02 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 09/18/02 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 04/15/03 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 10/15/03 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 03/24/04 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 09/22/04 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 05/09/05 1.01 9.33 6.45 14.28 115 NI 7.54 3.98 0.82 0.22 1.27 NI NI NI NI NI NI NTU 10/11/05 10.0 6.00 2.13 4.47 47.1 NI 59.0 8.00 0.22 0.42 2.24 -- NI -- NI NI NI NTU 04/24/06 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI NTU 10/19/06 -- 4.81 4.44 1.24 115 NI 21.0 7.43 0.77 0.55 1.35 -- NI -- NI NI NI NTU 04/12/07 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI NTU 09/26/07 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI NTU 04/29/08 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI NTU 12/03/08 4.42 4.80 5.64 2.99 18.8 NI 32.8 10.26 3.35 3.46 3.75 -- NI -- NI NI NI NTU 04/17/09 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI NTU 10/13/09 -- -- -- -- -- NI -- -- -- -- -- -- NI NI NI NI NTU 04/28/10 6.98 3.23 21.50 6.57 15.32 NI 14.38 10.66 2.28 3.13 5.16 6.48 NI 12.75 NI NI NI NTU 08/02/10 -- -- 8.93 5.18 -- NI -- -- 4.76 3.85 -- -- NI 10.05 40.6 9.73 10.73 NTU 10/11/10 3.28 5.01 11.64 4.95 11.99 NI 11.96 13.56 4.55 2.8 9.3 6.12 NI 35.7 45.9 44.7 14.17 NTU 05/11/11 -- -- -- -- -- NI -- -- -- -- -- NI -- -- -- -- NTU 10/06/11 6.75 5.87 8.08 6.65 12.35 NI 34.8 38.0 8.09 6.86 5.51 7.55 15.33 35.7 20.6 57.0 15.07 NTU 04/17/12 4.28 5.57 6.24 4.24 12.59 NI 10.16 5.90 4.12 3.44 4.45 4.19 -- -- -- -- -- NTU 10/22/12 4.65 7.09 5.75 6.83 18.35 NI 9.37 10.43 4.71 6.58 10.2 5.22 -- -- -- -- -- NTU 04/24/13 9.00 7.44 6.01 5.76 18.48 NI 19.0 8.49 7.08 5.97 5.3 6.49 5.42 6.50 14.18 5.95 6.55 NTU 09/10/13 4.16 7.44 6.18 10.94 15.89 9.12 6.69 6.99 4.41 5.09 4.72 32.8 12.75 14.69 9.05 26.3 7.58 NTU 04/23/14 4.72 4.61 4.51 5.57 8.43 4.64 9.18 8.81 6.58 6.06 5.05 30.1 4.68 6.34 7.49 11.97 4.15 NTU 10/03/14 5.76 6.94 7.86 7.04 8.69 5.88 6.99 19.8 4.86 7.54 6.17 12.94 6.07 11.85 9.99 8.74 7.44 NTU 04/14/15 3.34 3.91 5.57 24.30 6.09 3.4 9.28 4.46 4.77 2.81 1.97 5.09 2.43 1.84 4.00 10.55 4.14 NTU 10/05/15 1.62 -- 0.00 0.35 5.20 0.00 80.0 9.00 0.35 0.00 0.00 32.9 0.00 12.1 19.2 9.30 11.1 NTU 04/19/16 2.01 7.52 5.77 1.01 19.8 1.03 16.9 9.81 2.89 5.21 3.35 32.8 4.22 5.46 6.10 12.35 3.52 NTU 09/26/16 21.3 -- 0.33 0.30 6.26 0.47 3.12 16.99 4.31 1.78 1.79 3.74 0.56 2.40 3.10 1.42 0.32 NTU 03/21/17 -- -- 1.62 0.72 -- 0.39 -- 5.95 3.75 -- -- -- -- -- -- -- -- NTU 04/25/17 10.3 1.39 1.52 3.32 24.5 0.79 108 60.4 5.76 1.66 2.33 94.6 2.32 8.73 44.7 18.6 24.5 NTU 10/17/17 3.58 -- 6.87 0.57 7.44 0.83 33.4 9.70 1.23 0.71 0.97 8.31 4.98 9.32 2.99 8.03 2.95 (verification event) NTU 12/21/17 -- -- 1.29 -- 9.59 -- -- 28.7 -- -- -- -- -- -- -- -- -- NTU 04/16/18 2.56 9.28 0.61 0.58 2.09 0.26 49.7 8.13 1.96 0.67 9.30 9.85 8.87 4.44 9.12 8.45 7.57 NTU 10/16/18 3.07 -- 0.28 0.99 8.01 9.8 19.8 6.27 8.19 0.3 2.89 8.38 15.0 9.19 5.89 8.11 2.92 (verification event) NTU 02/20/19 -- -- -- -- 12.0 -- -- -- -- -- -- -- -- -- -- -- 7.02 NTU 04/09/19 3.46 2.25 1.30 1.11 21.1 1.12 40.5 16.7 4.66 0.47 3.32 7.75 7.01 9.94 5.03 6.29 1.63 NTU 10/07/19 1.35 0.67 4.98 0.67 9.01 1.00 9.67 9.20 2.60 2.53 2.53 35.4 3.64 8.28 7.91 9.90 3.74 (verification event) NTU 01/22/20 -- -- 1.42 -- -- -- -- -- -- -- 1.99 -- -- -- -- -- 2.71 NTU 04/20/20 1.33 0.69 1.21 3.24 8.74 1.15 30.1 7.66 2.57 1.15 2.33 14.8 9.27 7.55 5.47 9.57 1.57 NTU 10/13/20 0.98 0.57 0.92 2.52 16.9 0.48 21.3 5.53 1.60 1.79 1.93 9.48 7.20 5.31 19.2 6.39 5.51 NTU 04/28/21 0.80 1.38 9.20 3.03 9.89 2.51 35.6 9.77 0.89 2.13 1.28 7.63 8.83 9.89 9.71 9.71 3.71 NTU 10/14/21 1.05 2.99 0.97 2.44 8.79 2.10 109 7.61 1.24 1.59 1.49 3.11 6.33 7.41 6.02 9.88 6.33 NTU 04/19/22 1.13 2.74 4.23 2.63 9.63 2.22 39 9.51 2.73 0.63 0.44 7.82 9.70 7.12 8.75 9.74 6.71 NTU 10/19/22 1.10 1..82 2.34 5.32 9.90 3.01 221 9.92 0.71 0.74 0.55 5.07 6.16 6.15 9.72 2.41 6.71 Oxidation Reduction my 05/25/99 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI Potential (Field) my 09/22/99 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI my 03/27/00 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI my 09/13/00 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI my 03/13/01 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mv 09/13/01 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI my 03/08/02 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mv 09/18/02 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mv 04/15/03 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mv 10/15/03 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI my 03/24/04 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI my 09/22/04 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI my 05/09/05 -65 -2 -310 -159 -198 NI -266 -278 -240 -139 -278 NI NI NI NI NI NI my 10/11/05 197 92 67 136 57 NI 89 -57 189 78 42 -- NI -- NI NI NI my 04/24/06 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI my 10/19/06 -- -40 -159 -174 -95 NI -161 -148 -115 -284 -237 -- NI -- NI NI NI mv 04/ 12/07 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI my 09/26/07 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI my 04/29/08 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI my 12/03/08 105 171 83 -49 77 NI 105 181 -47 204 -87 -- NI -- NI NI NI mv 04/ 17/09 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI mv 10/ 13/09 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI my 04/28/10 288 446 245 182 284 NI 244 193 332 159 309 79 NI 367 NI NI NI my 08/02/10 -- -- 186 142 -- NI -- -- 310 94 -- -- NI 274 212 213 288 my 10/11/10 244 345 192 177 247 NI 122 66 399 108 170 53 NI 180 278 127 334 mv 05/ 11 / 11 -- -- -- -- -- NI -- -- -- -- -- -- NI -- -- -- -- mv 10/06/11 166 235 85 35 161 NI 113 -11 299 20 96 -46 98 180 266 181 286 my 04/17/12 171 240 97 16 154 NI 153 194 258 -28 90 -42 -- -- -- -- -- mv 10/22/12 127 235 95 41 137 NI 88 -45 221 -34 49 -30 -- -- -- -- -- mv 04/24/13 178 264 146 23 130 NI 185 206 202 17 58 -60 114 222 158 86 272 my 09/10/13 116 237 48 30 120 181 -17 -39 175 -165 73 -52 120 84 113 58 117 my 04/23/14 118 165 105 58 141 118 105 178 208 33 87 3 103 196 130 21 147 my 10/03/14 109 204 -54 26 13 -14 -69 -111 182 -3 19 -119 96 17 -123 -18 49 my 04/14/15 50 86 30 8 54 -10 38 67 67 -38 33 -127 36 78 58 -14 1.2 my 10/05/15 -38.4 -- -38 -14 -40 -46 6 -31 -29 -56.6 -39 -90 -42 -59 -66 -37 -37 my 04/19/16 135.0 266.0 21.0 31.7 142.0 89.0 63.0 103.0 214.0 -78.1 117.5 -78.0 126.0 139.0 131 50 111 my 09/26/16 42.2 -- -- 26 69.00 87 42 -72 103 94.1 50 -48 61 19 24 34 42 my 03/21/17 -- -- -22 38 -- 8 -- -61 159 -- -- -- -- -- -- -- -- mv 04/25/17 154.9 143.4 83.3 28.5 67.6 113.2 101.9 120 101.9 130.0 29.2 -41.3 67.9 76.0 99.0 105.7 112.1 my 10/17/17 154.1 -- -23.1 73.8 79.9 88.8 14.0 -89.1 132.1 120.7 39.5 -41.7 34.1 66.7 19.2 16.7 52.8 (verification event) my 12/21/17 -- -- 9.1 -- 66.0 -- -- -48.7 -- -- -- -- -- -- -- -- -- mv 04/16/18 364.8 -- 412.0 24.7 86.9 44.0 61.1 100.4 372.3 286.1 203.1 0.52 314.4 391.2 342.0 279.0 367.2 my 10/16/18 158.7 -- 59.7 20.7 135.8 83.4 60.0 -31.7 197.3 105.6 80.8 -99.40 26.4 128.5 187.0 165.8 180.2 (verification event) my 02/20/19 -- -- -- -- 317.0 -- -- -- -- -- -- -- -- -- -- -- 339.1 my 04/09/19 41.2 103.7 39.1 152.4 286.5 332.1 307.5 38.2 43.8 73.7 -40.7 -103.6 162.2 345.3 104.7 90.5 -70.9 my 10/07/19 196.3 250.3 -96.3 57.6 132.9 106.9 18.4 -65.9 -115.9 -221.7 83.1 -89.3 67.9 115.6 54.2 17.9 104.3 (verification event) my 01/22/20 -- -- -222.7 -- -- -- -- -- -- -- -230.9 -- -- -- -- -- -171.1 my 04/20/20 91.3 254.9 25.3 22.0 184.9 23.2 73.0 28.5 257.3 88.6 64.0 -75.2 64.7 557.0 110.0 71.0 121.0 my 10/13/20 39.7 301.7 10.8 -8.3 211.2 -152.4 50.5 -77.9 75.3 -59.5 -190.4 -47.7 54.2 113.4 83.1 99.5 -80.2 my 04/28/21 188.9 255.9 17.1 1.7 464.2 48.1 -14.6 166.7 197.1 113.2 78.1 -92.5 58.5 219.3 74.7 12.9 121.4 my 10/14/21 222.5 198.3 -34.2 -16.1 120.1 94.3 57.1 -54.1 235.2 155.2 97.6 58.5 62.2 355.1 35.6 46.7 250.2 my 04/19/22 179.4 10.5 12.0 -65.4 81.5 13.9 16.0 140.2 239.0 176.1 81.4 146.3 41.3 277.2 88.6 125.4 120.0 my 10/19/22 102.3 289.0 0.3 -20.0 90.3 28.6 -15.9 -113.7 168.9 86.1 98.7 -44.1 37.7 121.1 0.1 21.1 132.1 Dissolved Oxygen (Field) mg/L 05/25/99 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 09/22/99 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 03/27/00 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 09/13/00 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 03/13/01 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 09/13/01 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 03/08/02 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 09/18/02 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 04/15/03 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 10/15/03 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 03/24/04 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 09/22/04 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 05/09/05 3.61 6.33 0.38 4.33 0.40 NI 0.72 2.15 0.40 0.66 2.83 NI NI NI NI NI NI mg/L 10/11/05 5.69 6.25 1.64 4.42 2.61 NI 3.69 3.29 1.39 2.59 0.49 -- NI -- NI NI NI mg/L 04/24/06 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI mg/L 10/19/06 -- 5.49 0.58 1.55 1.49 NI 1.22 1.28 0.88 0.50 0.40 -- NI -- NI NI NI mg/L 04/ 12/07 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI mg/L 09/26/07 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI mg/L 04/29/08 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI mg/L 12/03/08 5.01 5.82 2.11 2.78 2.46 NI 1.66 6.29 2.13 0.71 1.86 -- NI -- NI NI NI mg/L 04/ 17/09 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI mg/L 10/ 13/09 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI mg/L 04/28/10 6.94 4.92 0.51 6.23 1.11 NI 2.81 4.80 5.10 2.59 0.39 1.10 NI 0.81 NI NI NI mg/L 08/02/10 -- -- 0.49 2.21 -- NI -- -- 0.61 1.96 -- -- NI 0.15 0.09 0.12 0.76 mg/L 10/11/10 3.49 3.40 0.28 2.52 0.39 NI 1.49 3.32 2.46 1.21 0.55 0.39 NI 0.47 0.58 0.54 1.57 mg/L 05/ 11 / 11 -- -- -- -- -- NI -- -- -- -- -- -- NI -- -- -- -- mg/L 10/06/11 4.49 4.87 0.49 3.29 1.72 NI 3.03 3.83 2.65 1.28 1.38 0.41 0.63 0.47 0.37 1.11 1.29 mg/L 04/17/12 4.75 4.37 0.62 2.34 1.87 NI 3.54 3.76 2.91 0.90 1.31 0.68 -- -- -- -- -- mg/L 10/22/12 3.75 2.30 1.43 3.24 0.49 NI 1.13 2.67 0.05 1.89 1.41 0.66 -- -- -- -- -- mg/L 04/24/13 4.36 4.05 1.69 2.96 2.01 NI 1.35 5.44 3.93 5.97 1.31 0.63 1.19 1.72 1.14 0.95 0.93 mg/L 09/10/13 5.95 4.06 2.67 5.90 6.29 6.00 7.20 3.74 1.26 1.71 3.56 1.66 1.19 0.99 0.78 1.09 0.69 mg/L 04/23/14 8.69 8.47 0.94 11.99 4.52 6.67 2.82 9.14 5.74 3.07 2.37 2.84 1.19 3.47 0.61 0.89 4.34 mg/L 10/03/14 4.59 4.68 0.59 3.11 1.41 3.85 3.30 3.02 1.51 2.60 0.70 2.90 0.65 0.32 0.33 0.60 0.41 mg/L 04/14/15 5.52 5.71 0.80 1.78 1.30 1.99 1.92 3.77 2.65 1.71 2.13 0.50 0.41 2.02 1.22 0.96 1.86 mg/L 10/05/15 3.80 -- 0.44 1.77 0.29 0.37 2.91 5.04 1.79 0.50 0.26 0.13 0.19 0.20 0.12 2.07 4.00 mg/L 04/19/16 6.18 8.48 0.54 3.70 2.26 4.04 3.17 4.90 4.19 0.50 0.26 0.18 0.51 0.29 0.31 0.25 0.30 mg/L 09/26/16 4.81 -- 0.38 2.03 1.03 2.30 2.44 2.15 0.84 0.50 0.50 0.17 0.29 0.38 0.42 0.28 0.30 mg/L 03/21/17 -- -- 0.61 1.29 -- 5.47 -- 2.61 0.99 -- -- -- -- -- -- -- -- mg/L 04/25/17 3.65 1.39 0.88 2.57 1.32 0.96 1.16 6.28 7.90 3.28 0.69 0.22 1.30 3.92 6.11 4.56 2.70 mg/L 10/17/17 2.85 -- 0.39 1.11 1.04 1.16 0.50 1.54 0.52 1.27 0.19 0.70 0.25 0.19 0.84 0.37 0.61 (verification event) mg/L 12/21/17 -- -- 0.35 -- 0.48 -- -- 1.35 -- -- -- -- -- -- -- -- -- mg/L 04/16/18 3.38 -- 0.95 2.27 0.79 0.58 1.36 3.49 3.26 0.79 0.12 0.52 0.24 1.17 6.43 0.43 3.31 mg/L 10/16/18 3.55 -- 0.49 0.57 0.31 0.19 0.39 2.14 2.41 0.30 0.48 2.20 0.61 0.23 0.17 2.12 1.53 (verification event) mg/L 02/20/19 -- -- -- -- 2.01 -- -- -- -- -- -- -- -- -- -- -- 3.11 mg/L 04/09/19 3.43 3.42 5.57 1.57 1.32 0.34 1.22 4.69 2.91 1.16 0.18 0.68 0.10 0.56 0.16 0.09 0.52 mg/L 10/07/19 2.37 1.53 0.76 1.77 0.70 0.52 0.95 1.58 0.64 0.88 0.27 0.11 0.24 0.51 0.23 0.40 0.39 (verification event) mg/L 01/22/20 -- -- 2.37 -- -- -- -- -- -- -- 0.37 -- -- -- -- -- 1.86 mg/L 04/20/20 2.89 3.54 0.67 1.67 0.42 0.79 0.94 1.71 1.13 0.46 0.22 0.06 0.17 0.45 0.31 0.20 0.33 mg/L 10/13/20 2.33 2.43 0.65 0.47 0.31 0.47 1.59 1.55 4.42 0.96 0.25 0.31 0.26 0.22 0.50 1.08 2.37 mg/L 04/28/21 1.58 3.38 0.46 1.83 0.71 0.26 1.69 1.81 0.44 0.46 0.10 0.19 0.22 1.98 0.36 0.32 0.28 mg/L 10/14/21 1.37 1.77 0.83 1.23 0.49 0.44 1.96 0.49 0.80 1.22 0.27 0.25 0.37 0.36 2.54 0.28 0.58 mg/L 04/19/22 1.45 2.47 0.71 1.50 2.53 0.33 1.84 5.97 4.73 1.85 0.27 2.21 0.32 1.08 0.44 1.76 1.58 mg/L 10/19/22 1.16 1.28 0.27 0.98 0.56 0.58 1.87 0.30 0.22 1.35 0.16 0.16 0.25 0.77 1.56 0.26 0.45 Notes: S.U. = Standard Units NTU = Nephelometric Turbidity Units uS/cm = microsiemens per centimeter mg/L = milligram per liter my = Millivolts -- = no data available or dry well 2 of 2 February 2023 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Antimony ug/L 03/01/00 -- -- 30 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 30 ND ND ND ND ND ND ug/L 03/01/01 -- -- 30 ND ND ND ND ND ND ug/L 09/01/01 -- -- 30 ND ND ND ND ND ND ug/L 03/01/02 -- -- 30 ND ND ND ND ND ND ug/L 09/01/02 -- -- 30 ND ND ND ND ND ND ug/L 04/01/03 -- -- 30 ND ND ND ND ND ND ug/L 10/01/03 -- -- 30 ND ND ND ND ND ND ug/L 03/01/04 -- -- 30 ND ND ND ND ND ND ug/L 09/01/04 -- -- 30 ND ND ND ND ND ND ug/L 05/01/05 -- -- 30 ND ND ND ND ND ND ug/L 10/01/05 -- -- 30 ND ND ND ND ND ND ug/L 04/01/06 -- -- 30 ND ND ND ND ND ND ug/L 10/01/06 -- -- 30 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.68 -- 6 -- ND ND ND ND ND ug/L 12/04/08 0.68 -- 6 -- ND ND ND ND ND ug/L 04/13/09 0.68 -- 6 -- ND ND ND ND ND ug/L 10/20/09 0.073 -- 6 0.461 B 0.185 B 0.351 B 0.346 B 0.337 B -- ug/L 04/30/10 0.22 -- 6 -- ND 0.272 1 0.225 1 0.258 1 ND ug/L 10/11/10 0.22 -- 6 -- 0.329 1 0.254 1 0.233 1 0.221 1 ND ug/L 05/12/11 0.22 -- 6 0.448 1 ND 0.287 1 0.241 1 0.261 1 ND ug/L 10/07/11 1.1 -- 6 ND ND ND 0.287 1 0.24 1 ND ug/L 04/19/12 0.22 -- 6 0.279 1 ND 0.34 1 0.308 1 0.284 1 ND ug/L 10/26/12 0.22 -- 6 ND ND ND ND ND ND ug/L 04/25/13 0.22 -- 6 ND ND ND ND ND ND ug/L 09/12/13 0.22 -- 6 ND 0.344 1 0.28 1 ND ND ND ug/L 04/25/14 0.22 -- 6 0.695 1 1.62 1 0.582 1 0.332 1 0.264 1 ND ug/L 10/02/14 0.22 -- 6 0.526 1 ND 0.378 1 0.268 1 0.267 1 ND ug/L 04/06/15 0.22 -- 6 0.312 1 ND 0.232 1 ND 0.754 1 ND ug/L 10/07/15 0.22 -- 6 0.268 1 ND 0.372 1 0.259 1 ND ND ug/L 04/20/16 0.22 -- 6 0.22 ND ND 0.424 1 0.261 1 ND ug/L 09/26/16 0.22 -- 6 ND ND ND ND 0.479 1 ND ug/L 04/28/17 0.37 -- 6 0.708 1 ND 0.485 1 ND ND ND ug/L 10/17/17 0.37 -- 6 0.455 1 ND 0.490 1 ND 0.654 1 ND ug/L 04/16/18 1.85 -- 6 ND ND ND ND ND ND ug/L 10/18/18 1.85 5.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.74 2.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.74 2.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.74 2.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.74 2.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.74 2.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.74 2.0 -- ND ND ND ND ND ND ug/L 04/19/22 0.74 2.0 -- ND ND ND ND ND ND ug/L 10/21/22 <0.52 5.0 -- ND ND ND ND ND ND Arsenic ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND Human Health = 10 ug/L ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND 2.4 1 ND 2.2 1 ND ug/L 12/04/08 2.8 -- 10 -- ND ND ND ND ND ug/L 04/13/09 2.8 -- 10 -- ND ND ND ND ND ug/L 10/20/09 2.8 -- 10 ND ND ND ND ND ND ug/L 04/30/10 2.8 -- 10 -- ND ND ND ND ND ug/L 10/11/10 2.8 -- 10 -- ND ND ND ND ND ug/L 05/12/11 2.8 -- 10 3.04 1 3.39 1 ND ND ND ug/L 10/07/11 2.8 -- 10 ND ND ND ND ND ND ug/L 04/19/12 2.8 -- 10 ND ND 3.12 1 ND ND ND ug/L 10/26/12 2.8 -- 10 ND ND ND ND 5.25 1 ND ug/L 04/25/13 2.8 -- 10 ND ND ND ND ND ND ug/L 09/12/13 5.4 -- 10 ND ND ND ND ND ND ug/L 04/25/14 5.4 -- 10 ND ND ND ND ND ND ug/L 10/02/14 5.4 -- 10 6.11 1 ND ND ND ND ND ug/L 04/06/15 6.8 -- 10 ND ND ND ND ND ND ug/L 10/07/15 6.8 -- 10 ND ND ND ND ND ND ug/L 04/20/16 6.8 -- 10 ND ND ND ND ND ND ug/L 09/26/16 6.8 -- 10 ND ND ND ND ND ND ug/L 04/28/17 6.8 -- 10 ND ND ND ND ND ND ug/L 10/17/17 6.8 -- 10 ND ND ND ND ND ND ug/L 04/16/18 6.8 -- 10 ND ND ND 9.17 1 ND ND ug/L 10/18/18 7.6 10 -- ND ND ND ND ND ND ug/L 04/12/19 7.6 10 -- ND ND ND ND ND ND ug/L 10/08/19 7.6 10 -- ND ND ND ND ND ND ug/L 04/20/20 7.6 10 -- ND ND ND ND ND ND ug/L 10/15/20 7.6 10 -- ND ND ND ND ND ND ug/L 04/29/21 7.6 10 -- ND ND ND ND ND ND ug/L 10/14/21 7.6 10 -- ND ND ND ND ND ND ug/L 04/19/22 7.6 10 -- ND ND ND ND ND ND ug/L 10/21/22 6.4 20 -- ND ND ND ND ND ND 1 of 13 February 2023 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method Practical SWS Downstream Surface Water Detected Constituent Reporting Sample Upstream Surface Water Monitoring Points Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Barium ug/L 03/01/00 -- -- 500 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 500 ND ND ND ND ND ND Human Health = 200 mg/L ug/L 03/01/01 -- -- 500 ND ND ND ND ND ND ug/L 09/01/01 -- -- 500 ND ND ND ND ND ND ug/L 03/01/02 -- -- 500 ND ND ND ND ND ND ug/L 09/01/02 -- -- 500 ND ND ND ND ND ND ug/L 04/01/03 -- -- 500 ND ND ND ND ND ND ug/L 10/01/03 -- -- 500 ND ND ND ND ND ND ug/L 03/01/04 -- -- 500 ND ND ND ND ND ND ug/L 09/01/04 -- -- 500 ND ND ND ND ND ND ug/L 05/01/05 -- -- 500 ND ND ND ND ND ND ug/L 10/01/05 -- -- 500 ND ND ND ND ND ND ug/L 04/01/06 -- -- 500 ND ND ND ND ND ND ug/L 10/01/06 -- -- 500 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- 41.8 1 54.8 1 21.7 1 25.4 1 25.6 1 ND ug/L 09/25/07 -- -- -- 74.5 1 70.9 1 16.8 1 23 1 24 1 ND ug/L 05/05/08 0.2 -- 100 -- 51.2 B 53 B 92.5 B 65.5 B ND ug/L 12/04/08 1 -- 100 -- 35.9 1 21.8 1 27 1 27 1 ND ug/L 04/13/09 4.2 -- 100 -- 53.4 1 44.8 1 41.6 1 42 1 ND ug/L 10/20/09 1 -- 100 68.3 1 36.3 1 21.8 1 27.2 1 26.9 1 ND ug/L 04/30/10 1 -- 100 -- 48.5 1 30.9 1 37.1 1 44.2 1 ND ug/L 10/11/10 1 -- 100 -- 47.1 1 18.8 1 29.3 1 30.6 1 ND ug/L 05/12/11 1 -- 100 77.3 1 39.3 1 40.3 1 35.3 1 37 1 ND ug/L 10/07/11 1 -- 100 74.2 1 76.4 1 21.4 1 42.7 1 32.2 1 ND ug/L 04/19/12 1 -- 100 43.7 1 48.4 1 23.5 1 33.7 1 33.7 1 ND ug/L 10/26/12 1 -- 100 48.2 1 51.2 1 25.2 1 34.8 1 35.1 1 ND ug/L 04/25/13 1 -- 100 57 1 65.1 1 28.5 1 40.8 1 37.8 1 ND ug/L 09/12/13 1 -- 100 56.7 1 40.7 1 25.3 1 31.5 1 33.9 1 ND ug/L 04/25/14 1 -- 100 100 60.8 1 49.3 1 52.7 1 48.8 1 ND ug/L 10/02/14 1 -- 100 112 45.9 1 22.3 1 24.4 1 25.1 1 ND ug/L 04/06/15 1 -- 100 59.3 1 44.3 1 42.2 1 35.5 1 47.3 1 ND ug/L 10/07/15 1 -- 100 85.7 1 46.2 1 28.3 1 319 41 1 ND ug/L 04/20/16 1 -- 100 113 46.3 1 47.5 1 31 1 35.4 1 ND ug/L 09/26/16 1 -- 100 44.8 1 52.8 1 17.6 1 27.9 1 33.9 1 ND ug/L 04/28/17 1 -- 100 46.5 1 45.4 1 59.9 1 50.2 1 45.0 1 ND ug/L 10/17/17 1 -- 100 40.1 1 33.6 1 55.8 1 41.2 1 37.8 1 ND ug/L 04/16/18 1 -- 100 42.9 1 45.4 1 42.1 1 43.9 1 44.1 1 ND ug/L 10/18/18 1.1 10 -- 56.6 57.4 56.4 61.7 61.3 ND ug/L 04/12/19 1.1 10 -- 60.9 64.6 40.0 56.8 56.6 ND ug/L 10/08/19 1.1 10 -- 55.9 49.1 55.1 57.8 60.0 ND ug/L 04/20/20 1.1 10 -- 41.9 48.0 44.2 42.2 40.5 ND ug/L 10/15/20 1.1 10 -- 47.9 48.5 47.3 52.0 52.9 ND ug/L 04/29/21 1.1 10 -- 47.5 42.5 41.6 45.0 41.8 ND ug/L 10/14/21 1.1 10 -- 43.8 41.4 51.2 43.1 44.2 ND ug/L 04/19/22 1.1 10 -- 42.7 51.1 41.4 45.5 43.6 ND ug/L 10/21/22 4.4 10 -- 35 40 37 35 35 ND Beryllium ug/L 03/01/00 -- -- 2 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 2 ND ND ND ND ND ND Acute = 65 ug/L ug/L 03/01/01 -- -- 2 ND ND ND ND ND ND Chronic = 6.5 ug/L ug/L 09/01/01 -- -- 2 ND ND ND ND ND ND ug/L 03/01/02 -- -- 2 ND ND ND ND ND ND ug/L 09/01/02 -- -- 2 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 2 2.4 2.4 2.3 2.3 ND ND ug/L 10/01/03 -- -- 2 ND ND ND ND ND ND ug/L 03/01/04 -- -- 2 ND ND ND ND ND ND ug/L 09/01/04 -- -- 2 ND ND ND ND ND ND ug/L 05/01/05 -- -- 2 ND ND ND ND ND ND ug/L 10/01/05 -- -- 2 ND ND ND ND ND ND ug/L 04/01/06 -- -- 2 ND ND ND ND ND ND ug/L 10/01/06 -- -- 2 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.7 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.1 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.08 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.1 -- 1 0.113 1 ND ND ND ND 0.42 1 ug/L 04/30/10 0.1 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.1 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.1 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.1 -- 1 ND 0.149 1 ND ND ND ND ug/L 04/19/12 0.1 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.1 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.1 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.1 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.1 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.1 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.1 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.1 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.1 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.1 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.13 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.13 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.13 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.16 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.16 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.16 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.16 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.16 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.16 1.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.16 1.0 -- ND ND ND ND ND ND ug/L 04/19/22 0.16 1.0 -- ND ND ND ND ND ND ug/L 10/21/22 0.30 4.0 -- ND ND ND ND ND ND 2of13 February 2023 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Cadmium ug/L 03/01/00 -- -- 1 ND ND ND ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 -- -- 1 ND ND ND ND ND ND SW-1 = 3.12 ug/L 03/01/01 -- -- 1 ND ND ND ND ND ND SW-2 = 2.81 ug/L 09/01/01 -- -- 1 1.1 ND ND ND ND ND SW-3 = 2.48 ug/L 03/01/02 -- -- 1 ND ND ND ND ND ND SW-4 = 3.74 ug/L 09/01/02 -- -- 1 ND 1.2 ND ND ND ND SW-5 = 3.17 ug/L 04/01/03 -- -- 1 4.1 3.8 4.0 3.9 ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 -- -- 1 ND ND ND ND ND ND SW-1 = 0.47 ug/L 03/01/04 -- -- 1 1.0 ND 1.0 ND ND ND SW-2 = 0.43 ug/L 09/01/04 -- -- 1 ND ND ND ND ND ND SW-3 = 0.39 ug/L 05/01/05 -- -- 1 ND ND ND ND ND ND SW-4 = 0.56 ug/L 10/01/05 -- -- 1 ND ND ND ND ND ND SW-5 = 0.48 ug/L 04/01/06 -- -- 1 ND ND ND ND ND ND ug/L 10/01/06 -- -- 1 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.5 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.36 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.09 -- 1 -- 0.14 1 0.17 1 0.26 1 0.21 1 ND ug/L 10/20/09 0.36 -- 1 0.477 J ND ND ND ND ND ug/L 04/30/10 0.36 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.36 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.36 -- 1 0.471 J ND ND ND ND ND ug/L 10/07/11 0.36 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.36 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.36 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.36 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.36 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.36 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.36 -- 1 0.661 J ND ND ND ND ND ug/L 04/06/15 0.36 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.36 -- 1 0.784 J ND ND 5.66 ND ND ug/L 04/20/16 0.36 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.36 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.36 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.36 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.36 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.36 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.36 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.36 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.36 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.36 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.36 1.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.36 1.0 -- ND ND ND ND ND ND ug/L 04/19/22 0.36 1.0 -- ND ND ND ND ND ND ug/L 10/21/22 0.44 5.0 -- ND ND ND ND ND ND Chromium ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 10 ND ND 25 14 20 ND SW Standard, Acute (ug/L) ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND SW-1 = 643.41 ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND SW-2 = 583.72 ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND SW-3 = 517.90 ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND SW-4 = 763.69 ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND SW-5 = 652.48 ug/L 10/01/03 -- -- 10 ND ND 10 ND ND ND SW Standard, Chronic (ug/L) ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND SW-1 = 83.69 ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND SW-2 = 75.93 ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND SW-3 = 67.37 ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND SW-4 = 99.34 ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND SW-5 = 84.87 ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND ND 15.0 ND ND ug/L 12/04/08 1 -- 10 -- ND 2.3 1 ND 1.40 1 ND ug/L 04/13/09 0.7 -- 10 -- 1.40 1 1.60 1 1.10 1 1.10 1 ND ug/L 10/20/09 1 -- 10 8.16 1 ND ND ND ND ND ug/L 04/30/10 1 -- 10 -- ND 1.14 1 ND 1.95 1 ND ug/L 10/11/10 1 -- 10 -- 2.52 1 1.00 1.00 1.00 ND ug/L 05/12/11 1 -- 10 4.37 1 ND 1.09 1 ND ND ND ug/L 10/07/11 1 -- 10 6.97 1 6.25 1 1.21 1 3.00 1 ND ND ug/L 04/19/12 1 -- 10 1.11 1 ND ND ND ND ND ug/L 10/26/12 1 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.4 -- 10 1.44 1 2.12 1 ND ND 2.57 1 ND ug/L 09/12/13 1.4 -- 10 ND ND ND ND ND ND ug/L 04/25/14 1.4 -- 10 11.7 ND 4.26 1 1.7 1 ND ND ug/L 10/02/14 1.4 -- 10 20.6 B 2.13 B 13.4 B 2.50 B 2.70 B -- ug/L 04/06/15 1.4 -- 10 3.66 1 ND 3.36 1 ND 3.51 1 ND ug/L 10/07/15 1.4 -- 10 7.93 1 ND ND 66.1 ND ND ug/L 04/20/16 1.4 -- 10 14.6 ND 6.73 1 ND ND ND ug/L 09/26/16 1.4 -- 10 ND ND ND ND ND ND ug/L 04/28/17 1.4 -- 10 ND ND 5.88 1 1.43 1 ND ND ug/L 10/17/17 1.4 -- 10 ND ND 3.94 1 ND ND ND ug/L 04/16/18 1.4 -- 10 1.74 1 ND 1.80 1 ND 1.92 1 ND ug/L 10/18/18 1.4 10 -- ND ND ND ND ND ND ug/L 04/12/19 1.4 10 -- 1.93 1 1.77 1 ND ND 2.09 1 ND ug/L 10/08/19 1.4 10 -- 1.83 1 ND ND ND ND ND ug/L 04/20/20 1.4 10 -- 1.65 1 ND 1.70 1 ND ND ND ug/L 10/15/20 1.4 10 -- 3.09 1 1.64 1 2.85 1 2.29 1 2.22 1 ND ug/L 04/29/21 1.4 10 -- 2.29 1 ND ND ND ND ND ug/L 10/14/21 1.4 10 -- 2.33 1 ND 2.82 1 ND ND ND ug/L 04/19/22 1.4 10 -- 2.03 1 ND 1.80 1 ND ND ND ug/L 10/21/22 1.1 10 -- 1.50 1 ND 1.50 1 ND ND ND 3of13 February 2023 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Cobalt ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND 17 ND ND ND ND ug/L 04/01/03 -- -- 10 14 14 15 14 ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 3.5 J ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND ND 7.1 J 3.8 J ND ug/L 12/04/08 1.1 -- 10 -- ND ND ND 2.9 J ND ug/L 04/13/09 0.6 -- 10 -- 1.8 J 0.7 J 0.8 J 0.6 J ND ug/L 10/20/09 1.1 -- 10 3.43 J ND ND ND ND ND ug/L 04/30/10 1.1 -- 10 -- ND ND ND 1.98 J ND ug/L 10/11/10 1.1 -- 10 -- ND ND ND ND ND ug/L 05/12/11 1.1 -- 10 3.19 J ND ND ND ND ND ug/L 10/07/11 1.1 -- 10 4.06 J 6.5 J 1.19 J 2.28 J ND ND ug/L 04/19/12 1.1 -- 10 ND ND ND ND ND ND ug/L 10/26/12 1.1 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.1 -- 10 ND 2.03 J ND ND ND ND ug/L 09/12/13 1.1 -- 10 ND ND 1.46 J 1.15 J ND ND ug/L 04/25/14 1.1 -- 10 4.31 J ND 1.91 J ND ND ND ug/L 10/02/14 1.1 -- 10 8.95 J ND 4.56 J 2.46 J 2.45 J ND ug/L 04/06/15 1.1 -- 10 1.73 J ND 2.44 J 1.56 J 2.18 J ND ug/L 10/07/15 1.1 -- 10 4.34 J ND 2.43 J 46.5 1.92 J ND ug/L 04/20/16 1.1 -- 10 7.38 J ND 4.32 J 1.66 J 2.1 J ND ug/L 09/26/16 1.1 -- 10 ND 1.30 J ND ND ND ND ug/L 04/28/17 1.1 -- 10 ND ND 2.31 J ND ND ND ug/L 10/17/17 1.1 -- 10 ND ND 2.94 J ND ND ND ug/L 04/16/18 1.1 -- 10 1.65 J 1.49 J ND 1.30 J 1.32 J ND ug/L 10/18/18 1.4 10 -- ND ND ND ND ND ND ug/L 04/12/19 1.4 10 -- ND 1.40 J ND ND ND ND ug/L 10/08/19 1.4 10 -- ND ND ND ND ND ND ug/L 04/20/20 1.4 10 -- ND ND ND ND ND ND ug/L 10/15/20 1.4 10 -- ND ND ND ND ND ND ug/L 04/29/21 1.4 10 -- ND ND ND ND ND ND ug/L 10/14/21 1.4 10 -- ND ND ND ND ND ND ug/L 04/19/22 1.4 10 -- ND ND ND ND ND ND ug/L 10/21/22 1.4 10 -- ND ND ND ND ND ND Copper ug/L 03/01/00 -- -- 200 ND ND ND ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 -- -- 200 ND ND ND ND ND ND SW-1 = 15.46 ug/L 03/01/01 -- -- 200 ND ND ND ND ND ND SW-2 = 13.82 ug/L 09/01/01 -- -- 200 ND ND ND ND ND ND SW-3 = 12.04 ug/L 03/01/02 -- -- 200 ND ND ND ND ND ND SW-4 = 18.82 ug/L 09/01/02 -- -- 200 ND ND ND ND ND ND SW-5 = 15.71 ug/L 04/01/03 -- -- 200 ND ND ND ND ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 -- -- 200 ND ND ND ND ND ND SW-1 = 10.17 ug/L 03/01/04 -- -- 200 ND ND ND ND ND ND SW-2 = 9.18 ug/L 09/01/04 -- -- 200 ND ND ND ND ND ND SW-3 = 8.11 ug/L 05/01/05 -- -- 200 ND ND ND ND ND ND SW-4 = 12.16 ug/L 10/01/05 -- -- 200 ND ND ND ND ND ND SW-5 = 10.32 ug/L 04/01/06 -- -- 200 ND ND ND ND ND ND ug/L 10/01/06 -- -- 200 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- 2.20 J 1.50 J 6.20 J 4.50 J 4.30 J ND ug/L 09/25/07 -- -- -- 11.2 0.6 10.3 8.40 J 10.1 ND ug/L 05/05/08 0.6 -- 10 -- 1.3 J 2.50 J 13.3 3.7 J ND ug/L 12/04/08 1.6 -- 10 -- 20.5 4.60 J 4.30 J 6.40 J ND ug/L 04/13/09 0.81 -- 10 -- 1.93 J 2.56 J 1.87 J 1.78 J ND ug/L 10/20/09 1.6 -- 10 10.7 ND 7.1 J 5.15 J 5.26 J ND ug/L 04/30/10 1.6 -- 10 -- ND 5.90 J 3.30 J 6.33 J ND ug/L 10/11/10 1.6 -- 10 -- 10.2 8.12 J 5.59 J 3.91 J ND ug/L 05/12/11 1.6 -- 10 12.6 ND 3.34 J 2.89 J 3.03 J ND ug/L 10/07/11 1.6 -- 10 8.31 J 5.88 J 4.91 J 6.56 J 3.28 J ND ug/L 04/19/12 1.6 -- 10 2.72 J ND 5.01 J 4.36 J 4.11 J ND ug/L 10/26/12 1.6 -- 10 2.04 J ND 5.47 J 2.22 J 2.71 J ND ug/L 04/25/13 1.6 -- 10 3.43 J 5.01 J 4.46 J 4.33 J 6.16 J ND ug/L 09/12/13 1.6 -- 10 1.94 J ND 1.67 J ND ND ND ug/L 04/25/14 1.6 -- 10 16.7 B 3.46 B 10.5 B 5.92 B 6.29 B -- ug/L 10/02/14 1.6 -- 10 30.9 1.82 J 6.82 J 5.42 J 5.30 J ND ug/L 04/06/15 1.6 -- 10 4.30 J 3.71 J 11.1 5.23 J 8.24 J ND ug/L 10/07/15 1.6 -- 10 11.3 1.6 2.65 J 57.1 2.17 J ND ug/L 04/20/16 1.6 -- 10 21.2 ND 10.8 2.56 J 4.07 J ND ug/L 09/26/16 1.6 -- 10 4.52 J 2.57 J 6.61 J 6.03 J 8.07 J ND ug/L 04/28/17 1.6 -- 10 5.19 J 3.02 J 13.4 4.55 J 4.51 J ND ug/L 10/17/17 1.6 -- 10 3.95 J 1.77 J 9.07 J 2.58 J 2.89 J ND ug/L 04/16/18 1.6 -- 10 4.40 J 4.19 J 4.11 J 5.33 J 3.98 J ND ug/L 10/18/18 1.6 10 -- 3.11 J 3.84 J 2.72 J 2.42 J 3.55 J ND ug/L 04/12/19 1.6 10 -- 3.44 J 5.44 J 5.11 J 3.66 J 4.18 J ND ug/L 10/08/19 1.6 10 -- 2.23 J 1.81 J 2.92 J 2.66 J 1.60 J ND ug/L 04/20/20 1.6 10 -- 4.72 J ND 4.85 J 6.44 J 4.63 J ND ug/L 10/15/20 1.6 10 -- 4.38 J 4.03 J 4.33 J 4.59 J 4.21 J ND ug/L 04/29/21 1.6 10 -- ND ND ND ND ND ND ug/L 10/14/21 1.6 10 -- 1.68 B ND ND 1.82 B ND 2.62 J ug/L 04/19/22 1.6 10 -- ND ND ND ND 2.91 J ND ug/L 10/21/22 3.2 20 -- 3.2 J ND 3.6 J ND ND ND 4 of 13 February 2023 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method Practical SWS Downstream Surface Water Detected Constituent Reporting Sample Upstream Surface Water Monitoring Points Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Lead ug/L 03/01/00 -- -- 10 ND ND 15 ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 -- -- 10 ND ND 10 ND ND ND SW-1 = 75.88 ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND SW-2 = 66.69 ug/L 09/01/01 -- -- 10 25 ND ND ND ND ND SW-3 = 56.87 ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND SW-4 = 95.12 ug/L 09/01/02 -- -- 10 ND 86 ND ND ND ND SW-5 = 77.30 ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND SW-1 = 2.96 ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND SW-2 = 2.60 ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND SW-3 = 2.22 ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND SW-4 = 3.71 ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND SW-5 = 3.01 ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 11.2 ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND ND 14.8 ND ND ug/L 12/04/08 1.9 -- 10 -- ND ND ND ND ND ug/L 04/13/09 1.6 -- 10 -- 2.30 1 2.50 1 1.60 1.60 ND ug/L 10/20/09 1.9 -- 10 8.94 J ND ND 2.44 1 3.34 J ND ug/L 04/30/10 1.9 -- 10 -- ND ND ND 2.04 1 ND ug/L 10/11/10 1.9 -- 10 -- 5.45 1 1.90 1.90 1.90 ND ug/L 05/12/11 1.9 -- 10 15.4 ND 2.00 1 ND ND ND ug/L 10/07/11 1.9 -- 10 10.0 16.4 ND 3.33 1 ND ND ug/L 04/19/12 1.9 -- 10 ND ND 2.38 J ND ND ND ug/L 10/26/12 1.9 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.9 -- 10 ND 4.74 J ND ND ND ND ug/L 09/12/13 2.1 -- 10 ND ND ND ND ND ND ug/L 04/25/14 2.1 -- 10 11.2 3.23 1 3.36 1 2.23 1 2.82 1 ND ug/L 10/02/14 2.1 -- 10 ND ND ND ND ND ND ug/L 04/06/15 3.1 -- 10 ND ND ND ND ND ND ug/L 10/07/15 3.1 -- 10 7.02 J ND ND 93.2 ND ND ug/L 04/20/16 3.1 -- 10 14.6 ND 6.10 J ND ND ND ug/L 09/26/16 3.1 -- 10 ND ND ND ND ND ND ug/L 04/28/17 3.1 -- 10 ND ND 4.66 J ND ND ND ug/L 10/17/17 3.1 -- 10 ND ND 3.18 J ND ND ND ug/L 04/16/18 3.1 -- 10 ND ND ND ND ND ND ug/L 10/18/18 3.1 10 -- ND ND ND ND ND ND ug/L 04/12/19 3.1 10 -- 3.91 J ND ND ND ND ND ug/L 10/08/19 3.1 10 -- ND ND ND ND ND ND ug/L 04/20/20 3.1 10 -- ND ND ND ND ND ND ug/L 10/15/20 3.1 10 -- ND ND ND ND ND ND ug/L 04/29/21 3.1 10 -- ND ND ND ND ND ND ug/L 10/14/21 3.1 10 -- ND ND ND ND ND ND ug/L 04/19/22 3.1 10 -- ND ND ND ND ND ND ug/L 10/21/22 6.6 10 -- ND ND ND ND ND ND Nickel ug/L 03/01/00 -- -- 50 ND ND ND ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 -- -- 50 ND ND 82 65 81 ND SW-1 = 530.88 ug/L 03/01/01 -- -- 50 ND ND ND ND ND ND SW-2 = 480.09 ug/L 09/01/01 -- -- 50 ND ND ND ND ND ND SW-3 = 424.28 ug/L 03/01/02 -- -- 50 ND ND ND ND ND ND SW-4 = 633.69 ug/L 09/01/02 -- -- 50 ND ND ND ND ND ND SW-5 = 538.61 ug/L 04/01/03 -- -- 50 ND ND ND ND ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 -- -- 50 ND ND ND ND ND ND SW-1 = 58.96 ug/L 03/01/04 -- -- 50 ND ND ND ND ND ND SW-2 = 53.32 ug/L 09/01/04 -- -- 50 ND ND ND ND ND ND SW-3 = 47.12 ug/L 05/01/05 -- -- 50 ND ND ND ND ND ND SW-4 = 70.38 ug/L 10/01/05 -- -- 50 ND ND ND ND ND ND SW-5 = 59.82 ug/L 04/01/06 -- -- 50 ND ND ND ND ND ND ug/L 10/01/06 -- -- 50 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND 2.7 1 ND 2.5 1 ND ug/L 09/25/07 -- -- -- ND ND 7.6 1 ND ND ND ug/L 05/05/08 2.0 -- 50 -- 3.5 1 3.9 1 5.5 1 6.7 1 ND ug/L 12/04/08 1.8 -- 50 -- ND 4.3 1 3.8 1 3.2 1 ND ug/L 04/13/09 0.6 -- 50 -- 2.3 1 1.5 1 1.6 1 1.5 1 ND ug/L 10/20/09 1.8 -- 50 2.94 1 ND 2.53 1 1.89 1 ND ND ug/L 04/30/10 1.8 -- 50 -- ND ND ND 2.14 1 ND ug/L 10/11/10 1.8 -- 50 -- 1.80 2.22 1 1.80 1.80 ND ug/L 05/12/11 1.8 -- 50 2.34 1 ND ND 2.57 1 2.66 1 ND ug/L 10/07/11 1.8 -- 50 3.64 1 4.23 1 6.40 1 4.31 1 3.43 1 ND ug/L 04/19/12 1.8 -- 50 ND ND 2.56 1 2.00 1 2.23 1 ND ug/L 10/26/12 1.8 -- 50 ND 1.92 1 5.32 1 5.14 1 5.46 1 ND ug/L 04/25/13 1.8 -- 50 2.38 1 3.30 1 6.20 1 6.96 1 6.85 1 ND ug/L 09/12/13 1.8 -- 50 ND ND 2.09 1 ND ND ND ug/L 04/25/14 1.8 -- 50 4.30 1 2.07 1 7.49 1 5.52 1 5.55 1 ND ug/L 10/02/14 1.8 -- 50 7.25 1 ND 23.7 1 9.96 1 10.6 1 ND ug/L 04/06/15 1.8 -- 50 2.02 1 ND 3.03 1 2.33 1 2.46 1 ND ug/L 10/07/15 1.8 -- 50 3.16 1 ND 6.56 1 22.0 1 3.14 1 ND ug/L 04/20/16 2.2 -- 50 5.60 1 ND 5.02 1 8.54 1 2.88 1 ND ug/L 09/26/16 2.2 -- 50 ND ND 3.54 1 3.34 1 6.44 1 ND ug/L 04/28/17 2.2 -- 50 ND ND 6.02 1 2.83 1 2.62 1 ND ug/L 10/17/17 2.2 -- 50 ND ND ND ND ND ND ug/L 04/16/18 2.2 -- 50 ND ND ND ND ND ND ug/L 10/18/18 2.2 10 -- ND ND ND ND ND ND ug/L 04/12/19 2.2 10 -- ND ND ND ND ND ND ug/L 10/08/19 2.2 10 -- ND ND ND ND 2.40 1 ND ug/L 04/20/20 2.2 10 -- 36.8 ND 3.71 1 ND ND ND ug/L 10/15/20 2.2 10 -- ND ND 3.50 1 ND ND ND ug/L 04/29/21 2.2 10 -- ND ND ND ND ND ND ug/L 10/14/21 2.2 10 -- ND ND ND ND ND ND ug/L 04/19/22 2.2 10 -- ND ND ND ND ND ND ug/L 10/21/22 3.3 40 -- ND ND ND ND ND 4.22 1 5 of 13 February 2023 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Selenium ug/L 03/01/00 -- -- 20 ND ND ND ND ND ND SW Standards ug/L 09/01/00 -- -- 20 ND ND ND ND ND ND Acute = 5 ug/L ug/L 03/01/01 -- -- 20 ND ND ND ND ND ND Chronic = 5 ug/L ug/L 09/01/01 -- -- 20 ND ND ND ND ND ND ug/L 03/01/02 -- -- 20 ND ND ND ND ND ND ug/L 09/01/02 -- -- 20 ND ND ND ND ND ND ug/L 04/01/03 -- -- 20 ND ND ND ND ND ND ug/L 10/01/03 -- -- 20 ND ND ND ND ND ND ug/L 03/01/04 -- -- 20 ND ND ND ND ND ND ug/L 09/01/04 -- -- 20 ND ND ND ND ND ND ug/L 05/01/05 -- -- 20 ND ND ND ND ND ND ug/L 10/01/05 -- -- 20 ND ND ND ND ND ND ug/L 04/01/06 -- -- 20 ND ND ND ND ND ND ug/L 10/01/06 -- -- 20 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND 2.9 1 ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND ND ND ND ND ug/L 12/04/08 2.7 -- 10 -- ND ND ND ND ND ug/L 04/13/09 3.4 -- 10 -- ND ND ND ND ND ug/L 10/20/09 2.7 -- 10 ND ND ND ND ND ND ug/L 04/30/10 0.83 -- 10 -- 1.72 1 0.9 1 0.974 1 1.23 1 ND ug/L 10/11/10 0.83 -- 10 -- 0.83 0.83 0.83 0.875 1 ND ug/L 05/12/11 0.83 -- 10 ND ND ND 1.16 1 0.926 1 ND ug/L 10/07/11 4.15 -- 10 ND ND ND 1.03 1 1.16 1 ND ug/L 04/19/12 0.83 -- 10 ND ND ND ND ND ND ug/L 10/26/12 0.83 -- 10 ND ND ND ND ND ND ug/L 04/25/13 0.83 -- 10 ND ND ND ND ND ND ug/L 09/12/13 0.91 -- 10 ND ND ND ND ND ND ug/L 04/25/14 0.91 -- 10 ND ND ND ND ND ND ug/L 10/02/14 0.91 -- 10 ND ND ND ND ND ND ug/L 04/06/15 0.91 -- 10 ND ND ND ND ND ND ug/L 10/07/15 0.91 -- 10 ND ND ND ND ND ND ug/L 04/20/16 0.91 -- 10 ND ND ND ND ND ND ug/L 09/26/16 0.91 -- 10 ND ND ND ND ND ND ug/L 04/28/17 6.2 -- 10 ND ND ND ND ND ND ug/L 10/17/17 6.2 -- 10 ND ND ND ND ND ND ug/L 04/16/18 6.2 -- 10 ND ND ND ND ND ND ug/L 10/18/18 6.2 10 -- ND ND ND ND ND ND ug/L 04/12/19 6.2 10 -- ND ND ND ND ND ND ug/L 10/08/19 6.2 10 -- ND ND ND ND ND ND ug/L 04/20/20 6.2 10 -- ND ND ND ND ND ND ug/L 10/15/20 6.2 10 -- ND ND ND ND ND ND ug/L 04/29/21 6.2 10 -- ND ND ND ND ND ND ug/L 10/14/21 6.2 10 -- ND ND ND ND ND ND ug/L 04/19/22 6.2 10 -- ND ND ND ND ND ND ug/L 10/21/22 10 20 -- ND ND ND ND ND ND Silver ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND SW-1 = 4.15 ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND SW-2 = 3.38 ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND SW-3 = 2.63 ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND SW-4 = 5.95 ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND SW-5 = 4.28 ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND SW-1 = 0.06 ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND SW-2 = 0.06 ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND SW-3 = 0.06 ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND SW-4 = 0.06 ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND SW-5 = 0.06 ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND 2.20 J ND 2.40 J ND ug/L 12/04/08 1.9 -- 10 -- ND ND ND 2.80 J ND ug/L 04/13/09 1.0 -- 10 -- ND ND ND ND ND ug/L 10/20/09 1.9 -- 10 ND ND ND ND ND ND ug/L 04/30/10 1.9 -- 10 -- 2.22 J ND ND ND ND ug/L 10/11/10 1.9 -- 10 -- ND ND ND ND ND ug/L 05/12/11 1.9 -- 10 ND ND ND ND ND ND ug/L 10/07/11 1.9 -- 10 ND ND ND ND ND ND ug/L 04/19/12 1.9 -- 10 ND ND ND ND ND ND ug/L 10/26/12 1.9 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.9 -- 10 2.06 J ND 1.95 1 2.29 1 2.31 J ND ug/L 09/12/13 1.9 -- 10 ND ND ND ND ND ND ug/L 04/25/14 1.9 -- 10 ND ND ND ND ND ND ug/L 10/02/14 1.9 -- 10 ND ND ND ND ND ND ug/L 04/06/15 1.9 -- 10 ND ND ND ND ND ND ug/L 10/07/15 1.9 -- 10 ND ND 2.74 J ND 2.32 J ND ug/L 04/20/16 1.9 -- 10 ND ND ND ND ND ND ug/L 09/26/16 1.9 -- 10 ND ND ND ND ND ND ug/L 04/28/17 1.9 -- 10 ND ND ND ND ND ND ug/L 10/17/17 1.9 -- 10 ND ND ND ND ND ND ug/L 04/16/18 1.9 -- 10 ND ND ND ND ND ND ug/L 10/18/18 1.9 10 -- ND ND ND ND ND ND ug/L 04/12/19 1.9 10 -- ND ND ND ND ND ND ug/L 10/08/19 1.9 10 -- ND ND ND ND ND ND ug/L 04/20/20 1.9 10 -- ND ND ND ND ND ND ug/L 10/15/20 1.9 10 -- ND ND ND ND ND ND ug/L 04/29/21 1.9 10 -- ND ND ND ND ND ND ug/L 10/14/21 1.9 10 -- ND ND ND ND ND ND ug/L 04/19/22 1.9 10 -- ND ND ND ND ND ND ug/L 10/21/22 1.5 10 -- ND ND ND ND ND ND 6of13 February 2023 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method Practical SWS Downstream Surface Water Detected Constituent Reporting Sample Upstream Surface Water Monitoring Points Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Thallium ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND 12 ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 0.053 1 0.05 1 0.045 1 0.055 1 0.054 1 ND ug/L 05/05/08 0.036 -- 5.5 -- ND ND ND ND ND ug/L 12/04/08 0.036 -- 5.5 -- ND ND ND ND ND ug/L 04/13/09 0.036 -- 5.5 -- ND ND ND ND ND ug/L 10/20/09 0.11 -- 5.5 0.11 0.11 0.11 0.11 0.11 ND ug/L 04/30/10 0.11 -- 5.5 -- ND ND ND ND ND ug/L 10/11/10 0.11 -- 5.5 -- ND ND ND ND ND ug/L 05/12/11 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/07/11 0.55 -- 5.5 ND ND ND ND ND ND ug/L 04/19/12 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/26/12 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/25/13 0.11 -- 5.5 ND ND ND ND ND ND ug/L 09/12/13 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/25/14 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/02/14 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/06/15 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/07/15 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/20/16 0.11 -- 5.5 ND ND ND ND ND ND ug/L 09/26/16 0.11 -- 5.5 0.190 1 0.124 1 0.205 1 0.187 1 0.316 1 ND ug/L 04/28/17 0.11 -- 5.5 0.389 1 0.267 1 0.261 1 0.287 1 0.205 1 ND ug/L 10/17/17 0.11 -- 5.5 0.819 1 0.655 1 0.698 1 0.840 1 0.425 1 ND ug/L 04/16/18 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/18/18 0.55 5.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.22 2.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.22 2.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.22 2.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.22 2.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.22 2.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.22 2.0 -- ND ND ND ND ND ND ug/L 04/19/22 0.22 2.0 -- ND ND ND ND ND ND ug/L 10/21/22 0.26 1.0 -- ND ND ND ND ND ND Vanadium ug/L 03/01/00 -- -- 40 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 40 ND ND ND ND ND ND ug/L 03/01/01 -- -- 40 ND ND ND ND ND ND ug/L 09/01/01 -- -- 40 ND ND ND ND ND ND ug/L 03/01/02 -- -- 40 ND ND ND ND ND ND ug/L 09/01/02 -- -- 40 ND 44 ND ND ND ND ug/L 04/01/03 -- -- 40 ND ND ND ND ND ND ug/L 10/01/03 -- -- 40 ND ND ND ND ND ND ug/L 03/01/04 -- -- 40 ND ND ND ND ND ND ug/L 09/01/04 -- -- 40 ND ND ND ND ND ND ug/L 05/01/05 -- -- 40 ND ND ND ND ND ND ug/L 10/01/05 -- -- 40 ND ND ND ND ND ND ug/L 04/01/06 -- -- 40 ND ND ND ND ND ND ug/L 10/01/06 -- -- 40 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 7.1 1 ND ND 1.5 1 1.2 1 ND ug/L 05/05/08 1 -- 25 -- ND ND 9.3 1 2.4 1 ND ug/L 12/04/08 1.4 -- 25 -- ND ND ND 2.5 1 ND ug/L 04/13/09 0.7 -- 25 -- 4.2 1 2.1 1 2.5 1 2.6 1 ND ug/L 10/20/09 1.4 -- 25 10.7 1 2.19 1 1.81 1 2.79 1 1.86 1 ND ug/L 04/30/10 1.4 -- 25 -- ND ND ND 3.45 1 ND ug/L 10/11/10 1.4 -- 25 -- 8.27 1 3.03 1 2.55 1 2.02 1 ND ug/L 05/12/11 1.4 -- 25 8.52 1 1.90 1 2.35 1 2.27 1 2.42 1 ND ug/L 10/07/11 1.4 -- 25 11.9 1 21.0 1 2.27 1 6.55 1 1.66 1 ND ug/L 04/19/12 1.4 -- 25 2.33 1 ND 1.48 1 1.60 1 1.44 1 ND ug/L 10/26/12 1.4 -- 25 ND ND ND ND ND ND ug/L 04/25/13 1.4 -- 25 2.31 1 5.99 1 ND ND ND ND ug/L 09/12/13 1.4 -- 25 2.11 1 ND 1.70 1 1.53 1 ND ND ug/L 04/25/14 1.4 -- 25 17.9 1 ND 4.7 1 2.25 1 1.60 1 ND ug/L 10/02/14 1.4 -- 25 42.2 ND 3.14 1 2.66 1 2.26 1 ND ug/L 04/06/15 1.4 -- 25 2.34 1 ND 3.33 1 ND 4.62 1 ND ug/L 10/07/15 1.4 -- 25 18.2 1 2.91 1 3.69 1 61.8 3.05 1 ND ug/L 04/20/16 1.4 -- 25 26.9 ND 12.0 1 2.13 1 3.04 1 ND ug/L 09/26/16 1.4 -- 25 1.95 1 ND ND 1.64 1 4.58 1 ND ug/L 04/28/17 1.4 -- 25 2.61 1 1.66 1 8.36 1 2.35 1 2.36 1 ND ug/L 10/17/17 1.4 -- 25 2.42 1 ND 7.92 1 3.42 1 2.88 1 ND ug/L 04/16/18 1.4 -- 25 2.33 1 2.14 1 2.45 1 2.94 1 3.67 1 ND ug/L 10/18/18 1.4 10 -- 1.88 1 2.26 1 1.51 1 1.61 1 1.70 1 ND ug/L 04/12/19 1.4 10 -- 1.54 1 4.16 1 2.39 1 1.78 1 2.09 1 ND ug/L 10/08/19 1.4 10 -- 2.45 1 ND 2.33 1 1.96 1 1.78 1 ND ug/L 04/20/20 1.4 10 -- 1.75 1 ND 2.28 1 2.49 1 1.85 1 ND ug/L 10/15/20 1.4 10 -- ND ND ND ND ND ND ug/L 04/29/21 1.4 10 -- ND ND ND ND ND ND ug/L 10/14/21 1.4 10 -- ND ND ND ND ND ND ug/L 04/19/22 1.4 10 -- ND ND ND ND ND ND ug/L 10/21/22 1.0 10 -- 1.3 1 1.1 1 3.0 1 2.4 1 1.1 1 ND 7 of 13 February 2023 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method Practical SWS Downstream Surface Water Detected Constituent Reporting Sample Upstream Surface Water Monitoring Points Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Zinc ug/L 03/01/00 -- -- 50 ND ND 31 58 68 ND SW Standard, Acute (ug/L) ug/L 09/01/00 -- -- 50 ND ND 130 50 60 ND SW-1 = 132.88 ug/L 03/01/01 -- -- 50 ND ND 68 ND 56 ND SW-2 = 120.15 ug/L 09/01/01 -- -- 50 120 ND 60 ND 50 ND SW-3 = 106.16 ug/L 03/01/02 -- -- 50 ND ND 70 50 60 ND SW-4 = 158.66 ug/L 09/01/02 -- -- 50 ND 180 80 ND ND ND SW-5 = 134.82 ug/L 04/01/03 -- -- 50 ND ND ND ND 50 ND SW Standard, Chronic (ug/L) ug/L 10/01/03 -- -- 50 ND ND 120 50 50 ND SW-1 = 133.97 ug/L 03/01/04 -- -- 50 ND ND 52 ND ND ND SW-2 = 121.14 ug/L 09/01/04 -- -- 50 58 ND 56 ND 59 ND SW-3 = 107.03 ug/L 05/01/05 -- -- 50 ND ND ND ND ND ND SW-4 = 159.96 ug/L 10/01/05 -- -- 50 ND ND ND ND ND ND SW-5 = 135.92 ug/L 04/01/06 -- -- 50 ND ND 51.6 ND ND ND ug/L 10/01/06 -- -- 50 ND ND 60.9 ND ND ND ug/L 04/10/07 -- -- -- 7.6 J 23.5 48.4 38.2 39.5 ND ug/L 09/25/07 -- -- -- 84.9 11.4 60.4 36.4 45.7 ND ug/L 05/05/08 1.0 -- 10 -- 5.8 J 6.4 J 154 20.4 ND ug/L 12/04/08 3.8 -- 10 -- 22.4 47.9 35.3 34.6 ND ug/L 04/13/09 3.4 -- 10 -- 24.9 21.4 25.8 27.2 ND ug/L 10/20/09 3.8 -- 10 70.0 7.62 J 45.2 30.9 33.2 ND ug/L 04/30/10 3.8 -- 10 -- 6.64 J 48.1 34.0 54.2 ND ug/L 10/11/10 3.8 -- 10 -- 32.0 30.1 22.8 22.9 ND ug/L 05/12/11 3.8 -- 10 76.2 10.1 33.5 27.7 36.9 ND ug/L 10/07/11 3.8 -- 10 102 62.1 45.0 60.5 32.1 ND ug/L 04/19/12 3.8 -- 10 5.98 J ND 32.0 21.6 22.9 ND ug/L 10/26/12 3.8 -- 10 12.3 5.81 J 25.3 20.3 22.0 ND ug/L 04/25/13 3.8 -- 10 15.0 25.8 42.6 31.6 33.1 ND ug/L 09/12/13 3.8 -- 10 9.73 J ND 29.8 14.9 17.1 ND ug/L 04/25/14 3.8 -- 10 66.3 7.92 J 63.3 37.2 33.7 ND ug/L 10/02/14 3.8 -- 10 144 3.94 J 63.6 34.9 34.0 ND ug/L 04/06/15 3.8 -- 10 16.4 5.33 J 57.3 30.0 51.6 ND ug/L 10/07/15 3.8 -- 10 117 7.88 J 25.2 1020 24.5 ND ug/L 04/20/16 4.4 -- 10 111 ND 95.5 31.5 44.7 ND ug/L 09/26/16 4.4 -- 10 5.08 J 5.21 J 20 16.4 27.7 ND ug/L 04/28/17 4.4 -- 10 11.0 6.98 J 64.8 21.1 20.1 ND ug/L 10/17/17 4.4 -- 10 8.83 J ND 32.5 5.72 J ND ND ug/L 04/16/18 4.4 -- 10 11.4 10.6 10.3 16.3 15.7 ND ug/L 10/18/18 4.4 10 -- 12.9 12.2 11.8 17.5 18.4 ND ug/L 04/12/19 4.4 10 -- 11.6 16.2 13.9 12.1 15.6 ND ug/L 10/08/19 4.4 10 -- 7.17 J ND 6.31 J 6.76 J 7.48 J ND ug/L 04/20/20 4.4 10 -- 27.1 ND 13.6 13.3 10.1 ND ug/L 10/15/20 4.4 10 -- 6.40 J ND 14.5 10.3 11.7 ND ug/L 04/29/21 4.4 10 -- 6.18 J ND 4.48 J 5.98 J 6.52 J ND ug/L 10/14/21 4.4 10 -- 4.54 J ND 4.77 J 10.5 7.25 J ND ug/L 04/19/22 4.4 10 -- 6.67 J 6.19 J 7.15 J 14.6 21.0 ND ug/L 10/21/22 8.7 20 -- ND ND 16 J ND 8.9 J B 42.2 Acetone ug/L 03/01/00 -- -- 100 ND ND ND ND ND -- SW Standard = 2000 ug/L ug/L 09/01/00 -- -- 100 ND ND ND ND ND ND ug/L 03/01/01 -- -- 100 ND ND ND ND ND ND ug/L 09/01/01 -- -- 100 ND ND ND ND ND ND ug/L 03/01/02 -- -- 100 ND ND ND ND ND ND ug/L 09/01/02 -- -- 100 ND ND ND ND ND ND ug/L 04/01/03 -- -- 100 ND ND ND ND ND ND ug/L 10/01/03 -- -- 100 ND ND ND ND ND ND ug/L 03/01/04 -- -- 100 ND ND ND ND ND ND ug/L 09/01/04 -- -- 100 ND ND ND ND ND ND ug/L 05/01/05 -- -- 100 ND ND ND ND ND ND ug/L 10/01/05 -- -- 100 ND ND ND ND ND ND ug/L 04/01/06 -- -- 100 ND ND ND ND ND ND ug/L 10/01/06 -- -- 100 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND 5.3 J 68 J 1.7 J 6.3 J ND ug/L 05/05/08 0.62 -- 100 -- ND ND ND ND ND ug/L 12/04/08 1.5 -- 100 -- 7.9 J 9.1 J 7.6 J 7.8 J ND ug/L 04/13/09 1.5 -- 100 -- ND ND ND ND ND ug/L 10/20/09 1.5 -- 100 ND ND 6.0 J ND 6.2 J ND ug/L 04/30/10 1.5 -- 100 -- 3.0 J 3.5 J 4.6 J 4.1 J ND ug/L 10/11/10 1.5 -- 100 -- ND ND ND ND ND ug/L 05/12/11 1.2 -- 100 9.7 J 7.5 J ND ND ND ND ug/L 10/07/11 1.2 -- 100 ND ND ND ND ND ND ug/L 04/19/12 1.2 -- 100 ND ND ND ND ND ND ug/L 10/26/12 1.2 -- 100 ND 4.4 J ND ND ND ND ug/L 04/25/13 0.96 -- 100 1.0 J 1.0 J ND ND 1.6 J ND ug/L 09/12/13 1.2 -- 100 ND ND ND ND ND ND ug/L 04/25/14 1.2 -- 100 ND ND ND ND ND ND ug/L 10/02/14 1.2 -- 100 ND ND ND ND ND ND ug/L 04/06/15 1.2 -- 100 ND ND ND ND ND ND ug/L 10/07/15 1.2 -- 100 ND ND ND ND ND ND ug/L 04/20/16 1.2 -- 100 ND ND ND ND ND ND ug/L 09/26/16 10 -- 100 ND 11 J ND ND 11 J ND ug/L 04/28/17 10 -- 100 23 B 19 B 19 B 36 B 16 B 33 J ug/L 10/17/17 10 -- 100 ND ND ND ND ND ND ug/L 04/16/18 10 -- 100 ND ND ND ND ND ND ug/L 10/18/18 10 20 -- ND ND ND ND ND ND ug/L 04/12/19 10 20 -- ND ND ND ND ND ND ug/L 10/08/19 10 20 -- ND ND ND ND ND ND ug/L 04/20/20 10 20 -- ND ND ND ND ND ND ug/L 10/15/20 10 20 -- ND ND ND ND ND ND ug/L 04/29/21 10 20 -- ND ND ND ND ND ND ug/L 10/14/21 10 20 -- ND ND ND ND ND 26 ug/L 04/19/22 10 20 -- ND ND ND ND ND ND ug/L 10/21/22 10 20 -- ND ND ND ND ND ND 8 of 13 February 2023 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Chloroform ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- 0.16 0.16 2.5 1 0.69 1 0.6 1 ND ug/L 09/25/07 -- -- -- 0.37 1 ND 8.4 1.2 1 1.2 1 ND ug/L 05/05/08 0.2 -- 5 -- ND ND ND ND ND ug/L 12/04/08 0.2 -- 5 -- 0.2 0.58 1 0.2 0.2 ND ug/L 04/13/09 0.2 -- 5 -- ND ND ND ND ND ug/L 10/20/09 0.2 -- 5 ND ND 2.4 1 2.1 1 1.3 1 ND ug/L 04/30/10 0.083 -- 5 -- ND 1.8 1 ND ND ND ug/L 10/11/10 0.2 -- 5 -- 0.2 7.4 2.0 1 2.0 1 ND ug/L 05/12/11 0.7 -- 5 ND ND ND 1 ND ND ND ug/L 10/07/11 0.7 -- 5 ND ND 2.4 1 0.92 1 1.1 1 ND ug/L 04/19/12 0.18 -- 5 ND ND 1.0 1 0.45 1 ND ND ug/L 10/26/12 0.18 -- 5 ND ND 1.2 1 ND ND ND ug/L 04/25/13 0.25 -- 5 ND ND 0.51 1 ND ND ND ug/L 09/12/13 0.18 -- 5 ND ND 1.8 1 0.76 1 0.76 1 ND ug/L 04/25/14 0.18 -- 5 1.6 1 ND 1.7 1 0.46 1 0.58 1 ND ug/L 10/02/14 0.18 -- 5 1.2 1 ND 0.95 1 1.0 1 ND ND ug/L 04/06/15 0.18 -- 5 ND ND 0.49 1 ND ND ND ug/L 10/07/15 0.18 -- 5 ND ND 2.4 1 0.92 1 1.0 1 ND ug/L 04/20/16 0.18 -- 5 ND ND ND ND ND ND ug/L 09/26/16 0.18 -- 5 ND ND 1.6 1 ND ND ND ug/L 04/28/17 0.18 -- 5 ND ND ND ND ND ND ug/L 10/17/17 0.18 -- 5 ND ND ND ND ND ND ug/L 04/16/18 0.18 -- 5 ND ND ND ND ND ND ug/L 10/18/18 0.18 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.18 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.18 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.18 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.18 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.18 1.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.18 1.0 -- ND ND ND ND ND ND ug/L 04/19/22 0.18 1.0 -- ND ND ND ND ND ND ug/L 10/21/22 0.18 1.0 -- ND ND ND ND ND ND Dibromochloromethane ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND No SW Standard ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND 0.54 1 ND ND ND ug/L 09/25/07 -- -- -- ND ND 2.8 1 ND ND ND ug/L 05/05/08 0.28 -- 3 -- ND ND ND ND ND ug/L 12/04/08 0.32 -- 3 -- ND ND ND ND ND ug/L 04/13/09 0.32 -- 3 -- ND ND ND ND ND ug/L 10/20/09 0.32 -- 3 ND ND ND ND ND ND ug/L 04/30/10 0.067 -- 3 -- ND ND ND ND ND ug/L 10/11/10 0.32 -- 3 -- 0.32 6.6 1.2 1 4.6 ND ug/L 05/12/11 0.63 -- 3 ND ND ND ND ND ND ug/L 10/07/11 0.63 -- 3 ND ND ND ND ND ND ug/L 04/19/12 0.17 -- 3 ND ND ND ND ND ND ug/L 10/26/12 0.17 -- 3 ND ND ND ND ND ND ug/L 04/25/13 0.49 -- 3 ND ND ND ND ND ND ug/L 09/12/13 0.17 -- 3 ND ND ND ND ND ND ug/L 04/25/14 0.17 -- 3 ND ND ND ND ND ND ug/L 10/02/14 0.17 -- 3 ND ND ND ND ND ND ug/L 04/06/15 0.17 -- 3 ND ND ND ND ND ND ug/L 10/07/15 0.17 -- 3 ND ND ND ND ND ND ug/L 04/20/16 0.17 -- 3 ND ND ND ND ND ND ug/L 09/26/16 0.17 -- 3 ND ND ND ND ND ND ug/L 04/28/17 0.17 -- 3 ND ND ND ND ND ND ug/L 10/17/17 0.17 -- 3 ND ND ND ND ND ND ug/L 04/16/18 0.17 -- 3 ND ND ND ND ND ND ug/L 10/18/18 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.17 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.17 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.17 1.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/19/22 0.17 1.0 -- ND ND ND ND ND ND ug/L 10/21/22 0.17 1.0 -- ND ND ND ND ND ND 9 of 13 February 2023 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 1,4-Dichlorobenzene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND SW Standard = 100 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.2 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.38 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.38 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.38 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.1 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.38 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.79 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.79 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.19 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.19 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.14 -- 1 ND ND 0.46 1 ND 0.19 1 ND ug/L 09/12/13 0.19 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.19 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.19 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.19 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.19 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.19 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.19 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.19 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.19 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.19 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.19 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.19 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.19 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.19 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.19 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.19 1.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.19 1.0 -- ND ND ND ND ND ND ug/L 04/19/22 0.19 1.0 -- ND ND ND ND ND ND ug/L 10/21/22 0.19 1.0 -- ND ND ND ND ND ND Chloromethane ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.23 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.34 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.34 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.34 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.05 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.34 -- 1 -- 0.82 B 0.34 0.34 B 0.62 B 0.43 1 ug/L 05/12/11 0.55 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.55 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.13 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.13 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.44 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.13 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.13 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.13 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.13 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.13 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.13 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.13 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.13 -- 1 0.42 1 ND ND 0.78 1 0.41 1 ND ug/L 10/17/17 0.13 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.13 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.13 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.13 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.13 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.13 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.13 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.13 1.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.13 1.0 -- ND ND ND ND ND ND ug/L 04/19/22 0.13 1.0 -- ND ND ND ND ND ND ug/L 10/21/22 0.13 1.0 -- ND ND ND ND ND ND 10 of 13 February 2023 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Methylene Chloride ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.24 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.53 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.53 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.53 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.07 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.53 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.14 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.14 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.23 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.23 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.5 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.23 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.23 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.23 -- 1 ND ND ND ND 0.77 1 ND ug/L 04/06/15 0.23 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.23 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.23 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.23 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.23 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.23 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.23 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.23 1.0 -- ND ND ND ND ND 0.73 1 ug/L 10/08/19 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.23 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.23 1.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/19/22 0.23 1.0 -- ND ND ND ND ND ND ug/L 10/21/22 0.23 1.0 -- ND ND ND ND ND ND Toluene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND SW Standard = 11 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND 0.31 1 ND ND ND ND ug/L 09/25/07 -- -- -- ND 4.2 ND ND ND ND ug/L 05/05/08 0.2 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.27 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.27 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.27 -- 1 ND ND 0.85 1 ND ND ND ug/L 04/30/10 0.053 -- 1 -- ND 0.43 1 ND ND ND ug/L 10/11/10 0.27 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.85 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.85 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.14 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.14 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.23 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.14 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.14 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.14 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.14 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.14 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.14 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.14 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.14 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.14 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.14 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.14 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.14 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.14 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.14 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.14 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.14 1.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.14 1.0 -- ND ND ND ND ND ND ug/L 04/19/22 0.14 1.0 -- ND ND ND ND ND ND ug/L 10/21/22 0.14 1.0 -- ND 0.48 1 ND ND ND ND Trichloroethene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND Human Health = 30 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND 11 of 13 February 2023 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quanitation Limit SWS Reporting Limit Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points Blanks SW-1 SW-2 SW-3 SW-4 SW-5 ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.25 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.38 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.38 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.38 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.13 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.38 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.72 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.72 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.15 -- 1 ND ND 0.69 J ND ND ND ug/L 10/26/12 0.15 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.23 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.15 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.15 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.15 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.15 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.15 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.15 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.15 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.15 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.15 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.15 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.15 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.15 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.15 1.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/19/22 0.15 1.0 -- ND ND ND ND ND ND ug/L 10/21/22 0.15 1.0 -- ND ND ND ND ND ND 12 of 13 February 2023 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Xylenes (Total) ug/L 09/25/07 -- -- ND ND ND ND ND ND ug/L 05/05/08 0.67 5 -- ND ND ND ND -- ug/L 12/04/08 0.4 5 -- ND ND ND ND -- ug/L 04/13/09 0.4 5 -- ND ND ND ND -- ug/L 10/20/09 0.4 5 ND ND ND ND ND ND ug/L 04/30/10 0.22 5 -- ND ND ND ND -- ug/L 10/11/10 0.4 5 -- ND ND ND ND ND ug/L 05/12/11 2.1 5 ND ND ND ND ND -- ug/L 10/07/11 2.1 5 ND ND ND ND ND -- ug/L 04/19/12 0.45 5 ND ND ND ND ND -- ug/L 10/26/12 0.45 5 ND ND ND ND ND -- ug/L 04/25/13 0.67 5 ND ND ND ND ND -- ug/L 09/12/13 0.45 5 ND ND ND ND ND -- ug/L 04/25/14 0.45 5 ND ND ND ND ND -- ug/L 10/02/14 0.45 5 ND ND ND ND ND -- ug/L 04/06/15 0.45 5 ND ND ND ND ND -- ug/L 10/07/15 0.45 5 ND ND ND ND ND -- ug/L 04/20/16 0.45 5 ND ND ND ND ND -- ug/L 09/26/16 0.45 5 ND ND ND ND ND -- ug/L 04/28/17 0.45 5 ND ND ND ND ND ND ug/L 10/17/17 0.45 5 ND ND ND ND ND ND ug/L 04/16/18 0.45 5 ND ND ND ND ND ND ug/L 10/18/18 0.45 3 ND ND ND ND ND ND ug/L 04/12/19 0.45 3.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.45 3.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.45 3.0 -- ND ND ND ND 1.5 1 ND ug/L 10/15/20 0.45 3.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.45 3.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.45 3.0 -- ND ND ND ND ND ND ug/L 04/19/22 0.45 3.0 -- ND ND ND ND ND ND ug/L 10/21/22 0.45 3.0 -- ND ND ND ND ND ND 1,4-Dioxane ug/L 10/18/18 1.2 2.0 -- ND ND ND 2.1 1.5 1 ND (SW Standard = 80 ug/L) ug/L 04/12/19 1.2 2.0 -- ND 1.6 1 ND ND ND ND ug/L 10/08/19 1.2 2.0 -- ND 1.3 1 ND 1.2 1 ND ND ug/L 04/20/20 0.80 2.0 -- ND 1.6 1 ND 0.89 1 0.91 1 ND ug/L 10/15/20 0.80 2.0 -- ND 1.2 1 ND ND 1.0 1 ND ug/L 04/29/21 0.80 2.0 -- ND 1.7 1 ND 1.0 1 0.87 1 ND ug/L 10/14/21 0.80 2.0 -- ND 1.4 1 ND 0.92 1 1.2 1 ND ug/L 04/19/22 0.80 2.0 -- ND 1.7 1 ND ND ND ND ug/L 10/21/22 0.30 1.0 -- ND 0.69 1 ND ND ND ND Notes: B = blank -qualified data Shaded = concentrations above acute standards are shaded Bold = concentrations above chronic standards are bolded Data prior to April 2017 provided by S&ME Engineering # = EPA Action Level * = EPA Secondary MCL Blanks = field, trip and method blanks EPA MCL = United States Environmental Protection Agency Maximum Contaminant Level MDL = laboratory method detection limit ug/L = micrograms per liter mg/L = milligrams per liter nM = nano mols SWS Reporting Limit = NCPQL prior to 2007 and NCSWSL starting on 01/18/07 -- = no data available or no limit established NC 2L = North Carolina Water Quality Standard ND = not detected above the laboratory detection limit or stated reporting limit 1 = are estimated values between MDL and PQL. Hardness values collected last during the April 2021 event (mg/L): SW-1 = 116, SW-2 = 103, SW-3 = 89, SW-4 = 143, SW-5 = 118 13 of 13 February 2023 19131339.106 IEll :3I=W/ Summary of Surface Water Field Parameters White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points (SW Standard) Units Date SW-1 SW-2 SW-3 SW-4 SW-5 pH (Field) S. U. 03/25/99 7.27 7.26 7.30 -- S. U. 09/23/99 7.15 7.54 6.86 -- -- S. U. 03/27/00 8.06 8.15 7.89 8.19 8.02 S. U. 09/13/00 7.56 7.31 ND 7.25 7.06 S. U. 03/12/01 7.51 7.29 7.29 7.24 7.18 S. U. 09/13/01 7.51 7.51 7.22 7.24 7.18 S. U. 03/07/02 7.20 7.26 7.04 7.20 6.80 S. U. 09/18/02 7.43 7.33 -- 7.36 6.97 S. U. 04/15/03 7.87 7.60 7.61 7.50 7.62 S. U. 10/15/03 7.26 6.80 6.98 7.15 6.99 S. U. 03/24/04 9.50 8.80 8.99 8.63 8.63 S. U. 09/22/04 7.76 7.26 7.61 7.61 7.63 S. U. 05/10/05 9.56 9.41 9.36 9.45 9.28 S. U. 10/11 /05 7.37 7.07 7.19 7.17 7.35 S. U. 04/24/06 7.11 6.99 6.86 7.20 7.38 S. U. 10/16/06 -- -- -- -- -- S. U. 04/10/07 6.24 6.64 6.55 7.02 7.16 S. U. 09/25/07 6.81 7.28 6.28 7.36 7.20 S. U. 05/02/08 -- -- -- -- -- S. U. 12/05/08 -- 7.82 7.56 7.85 7.98 S. U. 04/16/09 -- 8.01 8.13 7.89 7.89 S. U. 10/07/09 -- -- -- -- -- S. U. 04/28/10 -- -- -- -- -- S. U. 10/05/10 -- 8.05 7.65 8.05 7.81 S. U. 05/10/11 7.74 7.74 7.71 7.64 7.54 S. U. 10/06/11 7.21 7.26 6.90 7.22 7.70 S. U. 04/16/12 -- -- -- -- -- S. U. 10/24/ 12 -- -- -- -- -- S. U. 04/24/13 6.97 7.24 6.92 7.16 7.63 S. U. 09/09/13 7.68 8.30 7.59 7.76 7.69 S. U. 04/22/14 7.54 7.29 7.30 7.37 7.02 S. U. 10/01 /14 8.03 8.03 7.88 7.72 7.84 S. U. 04/07/15 8.13 7.77 7.59 7.84 7.79 S. U. 10/06/15 7.27 7.37 7.34 7.62 7.19 S. U. 04/18/16 7.57 7.68 7.56 7.29 7.39 S. U. 09/26/16 7.22 6.75 7.21 7.30 7.34 S. U. 04/25/17 7.41 7.40 7.14 7.28 7.22 S. U. 10/16/17 7.38 6.88 7.07 7.45 7.94 S. U. 04/16/18 7.48 7.38 7.42 7.67 7.38 S. U. 10/18/18 7.49 8.01 7.50 7.43 7.40 S. U. 04/08/19 7.07 6.50 7.69 7.28 7.50 S. U. 10/07/19 7.56 7.07 7.54 7.42 7.50 S. U. 04/20/20 8.00 7.40 7.72 7.88 7.57 S. U. 10/15/20 7.65 7.22 7.76 7.50 7.39 S. U. 04/29/21 7.57 7.46 7.44 7.46 7.44 S. U. 10/14/21 6.33 7.22 7.19 7.62 7.30 S. U. 04/19/22 7.71 7.52 7.53 7.55 7.21 S. U. 10/21 /22 7.44 7.21 7.62 7.50 7.15 Specific Conductance (Field) US/cm 03/25/99 347 155 309 -- -- US/cm 09/23/99 811 123 487 -- -- US/cm 03/27/00 417 186 363 318 315 US/cm 09/13/00 303 233 ND 471 438 US/cm 03/12/01 6919 6145 6145 6393 5960 US/cm 09/13/01 6919 7324 6063 6393 5960 US/cm 03/07/02 420 377 577 561 555 US/cm 09/18/02 248 271 -- 449 469 US/cm 04/15/03 74 254 261 345 325 US/cm 10/15/03 215 256 357 334 340 US/cm 03/24/04 293 253 410 378 379 US/cm 09/22/04 242 223 234 424 1 US/cm 05/10/05 283 271 391 387 390 US/cm 10/11/05 167 215 319 264 269 US/cm 04/24/06 195 182 335 286 404 US/cm 10/16/06 -- -- -- -- -- US/cm 04/10/07 31.9 28.9 43.6 42.9 43.5 US/cm 09/25/07 31.0 13.0 57.0 53.0 54.0 US/cm 05/02/08 -- -- -- -- -- US/cm 12/05/08 -- 31.6 32.6 31.1 29.1 US/cm 04/16/09 -- 19.8 23.8 26.5 24.9 US/cm 10/07/09 -- -- -- -- -- US/cm 04/28/10 -- -- -- -- -- US/cm 10/05/10 -- 27.9 54 38.9 35.7 US/cm 05/10/11 256 209 345 412 405 US/cm 10/06/11 309 218 529 462 446 US/cm 04/16/12 -- -- -- -- -- US/cm 10/24/12 -- -- -- -- -- US/cm 04/24/13 237 242 381 362 380 US/cm 09/09/13 327 266 461 439 448 US/cm 04/22/14 337 275 430 375 420 US/cm 10/01/14 276 228 454 444 441 US/cm 04/07/15 318 255 400 378 423 US/cm 10/06/15 229 151 337 299 284 US/cm 04/18/16 254 183 313 307 300 US/cm 09/26/16 293 214 439 412 427 US/cm 04/25/17 211 198 318 272 1272 US/cm 10/16/17 209 171 211 241 263 US/cm 04/16/18 233 215 234 217 227 US/cm 10/18/18 191 264 159 209 254 US/cm 04/08/19 129 210 158 270 248 US/cm 10/07/19 308 219 290 320 325 US/cm 04/20/20 189 212 194 192 197 US/cm 10/15/20 221 192 216 221 223 US/cm 04/29/21 251 208 228 259 252 US/cm 10/14/21 201 216 260 221 212 US/cm 04/19/22 262 204 202 225 244 US/cm 10/21 /22 162 183 151 158 208 1 of 2 February 2023 19131339.106 11r_1--14=W1 Summary of Surface Water Field Parameters White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points (SW Standard) Units Date SW-1 SW-2 SW-3 SW-4 SW-5 Temperature (Field) °C 03/25/99 11.81 11.22 13.86 -- -- °C 09/23/99 18.45 17.18 21.83 -- -- °C 03/27/00 14.85 15.73 17.17 15.53 14.29 °C 09/13/00 25.27 23.45 -- 24.96 25.53 °C 03/12/01 14.86 16.71 16.71 15.51 16.52 °C 09/13/01 14.86 16.65 16.74 15.51 16.52 °C 03/07/02 12.12 13.02 16.45 14.40 13.20 °C 09/18/02 18.66 16.70 -- 19.05 18.96 °C 04/15/03 21.65 22.24 20.92 20.11 17.23 °C 10/15/03 17.39 18.39 20.06 18.45 20.33 °C 03/24/04 16.00 18.06 17.17 15.83 17.22 °C 09/22/04 22.67 21.95 25.28 24.17 22.95 °C 05/10/05 24.09 22.85 23.97 23.69 21.78 °C 10/11 /05 18.60 18.30 20.60 20.00 19.80 °C 04/24/06 18.30 16.26 18.47 19.05 22.24 °C 10/16/06 -- -- -- -- -- °C 04/10/07 10.55 8.05 12.20 14.82 13.49 °C 09/25/07 17.06 21.61 23.84 18.61 19.48 °C 05/02/08 -- -- -- -- -- °C 12/05/08 -- 7.00 11.30 9.50 8.80 °C 04/16/09 -- 12.20 14.30 14.50 13.20 °C 10/07/09 -- -- -- -- -- °C 04/28/ 10 -- -- -- -- -- °C 10/05/ 10 -- -- -- -- -- °C 05/10/11 19.10 17.50 19.30 19.40 19.50 °C 10/06/ 11 16.16 13.10 19.10 17.80 18.67 °C 04/16/12 -- -- -- -- -- °C 10/24/ 12 -- -- -- -- -- °C 04/24/ 13 16.35 14.24 17.40 16.28 16.20 °C 09/09/13 24.70 22.80 25.50 24.80 25.00 °C 04/22/ 14 15.70 12.90 16.80 17.70 15.30 °C 10/01/14 19.33 19.21 21.28 19.92 22.08 °C 04/07/ 15 17.50 16.70 18.50 17.90 16.00 °C 10/06/ 15 18.76 17.11 21.82 20.90 19.20 °C 04/18/16 18.85 18.38 19.83 19.23 18.57 °C 09/26/16 21.60 20.60 23.80 22.50 22.60 °C 04/25/17 21.17 19.60 20.20 20.56 10.05 °C 10/16/17 15.42 15.62 11.55 16.71 16.86 °C 04/16/18 11.75 9.66 8.67 12.24 12.24 °C 10/18/18 14.7 14.9 14.9 13.2 19.8 °C 04/08/19 17.4 15.7 19.1 17.5 19.3 °C 10/07/19 20.0 18.6 19.7 19.8 21.1 °C 04/20/20 16.8 15.7 16.4 15.5 15.3 °C 10/15/20 18.5 17.2 18.1 16.6 15.8 °C 04/29/21 21.3 19.9 17.6 20.5 20.7 °C 10/14/21 20.4 18.7 7.9 19.2 19.8 °C 04/19/22 15.1 12.9 14.7 13.5 13.4 °C 10/21 /22 10.6 8.3 10.3 10.4 9.7 Turbidity (Field) NTU 04/25/17 13.9 7.05 96.5 14.7 9.02 NTU 10/16/17 5.89 2.71 73.8 8.40 5.78 NTU 04/16/18 13.9 12.5 14.6 26.3 22.4 NTU 10/18/18 4.94 4.84 3.77 9.87 5.30 NTU 04/18/19 4.04 26.1 16.5 5.24 7.97 NTU 10/07/19 4.28 3.84 3.61 4.98 3.90 NTU 04/20/20 8.23 3.59 9.71 25.4 9.88 NTU 10/15/20 4.81 3.64 4.86 6.88 6.38 NTU 04/29/21 4.18 4.83 30.4 6.19 6.23 NTU 10/14/21 3.74 7.52 10.1 4.25 7.15 NTU 04/19/22 8.13 6.75 6.6 9.35 9.18 NTU 10/21/22 5.83 4.62 8.8 9.27 7.67 Oxidation Reduction Potential (field) my 04/25/17 69.8 50.6 72.3 79.4 77.3 my 10/16/17 81.7 60.9 174.0 81.3 10.7 my 04/16/18 119.5 95.2 202.0 190.5 115.8 my 10/18/18 115.1 61.7 97.2 143.1 7.9 my 04/08/19 124.5 143.2 5.3 101.8 332.5 my 10/07/19 137.1 17.2 179.6 159.5 170.9 my 04/20/20 179.1 7.7 117.5 144.2 77.8 my 10/15/20 198.9 -2.6 190.0 147.3 70.9 my 04/29/21 115.3 -32.8 236.6 154.1 141.1 my 10/14/21 301.3 -13.1 231.6 171.2 132.2 my 04/19/22 127.2 45 90.0 172.8 148.8 my 10/21 /22 107.3 99.5 94.7 92.0 133.7 Dissolved Oxygen (field) mg/L 04/25/17 7.22 7.50 7.44 6.91 7.02 mg/L 10/16/17 8.33 8.08 8.37 8.01 6.90 mg/L 04/16/18 8.01 8.97 7.92 7.18 8.13 mg/L 10/18/18 5.95 10.74 6.99 7.06 5.81 mg/L 04/08/19 6.91 7.94 6.73 7.19 9.47 mg/L 10/07/19 5.32 4.89 5.90 5.03 6.19 mg/L 04/20/20 9.06 9.38 9.07 7.65 7.07 mg/L 10/15/20 7.37 8.20 7.47 8.05 7.72 mg/L 04/29/21 7.34 8.91 7.60 8.04 6.56 mg/L 10/12/21 7.21 8.24 9.31 8.35 6.82 mg/L 04/19/22 7.18 9.70 9.34 8.35 7.35 m /L 10/21 /22 8.76 8.00 9.51 1 8.19 6.79 Notes: S.U. = Standard Units NTU = Nephelometric Turbidity Units uS/cm = microsiemens per centimeter mg/L = milligram per liter -- = no data available Data prior to April 2017 provided by S&ME Engineering 2 of 2 FIGURES WSP Page 14 Second Semi -Annual 2022 Water Quality Monitoring Report- White Street Landfill - Phase II Project No. GL19131339 City of Greensboro LEGEND ❑ SW-1 SURFACE WATER MONITORING POINT NOTES 1. SURFACE WATER LOCATIONS ARE APPROXIMATE. 2. 7.5 MINUTE USGS QUADRANGLE, MCLEANSVILLE, NORTH CAROLINA, 2016. SITE LOCATION MAP NOT TO SCALE 0 1500 3000 1" = 1500' FEET PROJECT WHITE STREET LANDFILL CITY OF GREENSBORO GREENSBORO, NORTH CAROLINA TITLE SURFACE WATER LOCATION MAP PROJECT NO. FIGURE 19-131339 0 2 m 3t CD o� co 0 rn I M f E K Z LL SW-3 LOCATED --1600 FT. WEST —4WU �- I . W t5 1 SW-2 LOCATED -500 FT. WEST J '1 11-6 689.69 SN `68! If-!� 681.9 00, 681.96 I�ip 682.41 l mom El " I 680.13 — MSW LANDFILL II-11681.37 0114 ti �` �.' LIMITS OF WASTE ' '- - 681.97 ` MW-3 _ --�,683.63 J�I JJ 692.46 \4 691.75 -r- 700 J.. 710 I� �715:Q1 1 ti 30 CLIENT CITY OF GREENSBORO CONSULTANT SW-4 LOCATED -900 FT. EAST YYYY-MM-DD 2022-11-03 DESIGNED NTT PREPARED SIB REVIEWED RPK APPROVED RPK LEGEND -- -- APPROXIMATE PROPERTY LINE. - — — — — — — — - APPROXIMATE LIMITS OF WASTE EX. TOPOGRAPHIC CONTOURS (2 FT. INTERVALS) ❑ SURFACE WATER MONITORING POINT COMPLIANCE GROUNDWATER MONITORING WELL NES / SENTINEL GROUNDWATER MONITORING WELL 4 NONCOMPLIANCE GROUNDWATER MONITORING WELL 0 LEACHATE SAMPLING LOCATION GROUNDWATER SURFACE CONTOUR APPROXIMATE GROUNDWATER FLOW SEGMENT USED TO CALCULATE GRADIENT NM NOT MEASURED NOTES 1. TOPOGRAPHIC CONTOUR INTERVAL = 2 FEET. 2. GROUNDWATER SURFACE CONTOUR INTERVAL = 10 FEET. 3. GROUNDWATER ELEVATIONS MEASURED ON OCTOBER 18-19, 2022. 4. GROUNDWATER CONTOURS ARE BASED ON LINEAR INTERPOLATION BETWEEN AND EXTRAPOLATION FROM KNOWN DATA, TOPOGRAPHIC CONTOURS, AND KNOWN FIELD CONDITIONS" THEREFORE, GROUNDWATER CONTOURS MAY NOT REFLECT ACTUAL GROUNDWATER CONDITIONS. 5. GROUNDWATER CONTOUR LINES SHOW THE WATER TABLE SHAPE AND ELEVATION. THESE CONTOURS ARE INFERRED LINES FOLLOWING THE GROUNDWATER SURFACE AT A CONSTANT ELEVATION ABOVE SEA LEVEL" THE GROUNDWATER FLOW DIRECTION IS GENERALLY PERPENDICULAR TO THE GROUNDWATER SURFACE CONTOURS, SIMILAR TO THE RELATIONSHIP BETWEEN SURFACE WATER FLOW AND TOPOGRAPHIC CONTOURS. 6. ELEVATIONS SHOWN IN THIS DRAWING ARE IN FEET ABOVE MEAN SEA LEVEL DATUM ("MEAN SEA LEVEL DATUM" REFERS TO THE NATIONAL GEOTETIC VERTICAL DATUM (NGVD) OF 1929) AND COORDINATES ARE EXPRESSED IN TERMS OF THE STATE PLANE COORDINATE SYSTEM. 7. SURFACE WATER LOCATIONS ARE APPROXIMATE. 8. TOPOGRAPHY PROVIDED BY BRADY SURVEYING CO. FROM AERIAL PHOTOGRAPHY DATED NOVEMBER 9, 1994. TOPOGRAPHY IN VICINITY OF PHASE II AND III LANDFILLS UPDATED BASED ON AERIAL SURVEY DATED JUNE 1, 2020, PROVIDED BY CARTOGRAPHIC AERIAL MAPPING, INC. 9. 7.5 MINUTE USGS QUADRANGLE, MCLEANSVILLE, NORTH CAROLINA, 2016. T pAl 0 %,11 ''' BRIM RO IMP 1 ii' i - 13 KEELY RD °o _ SITE -� l - lk f`' y QUEEN BETy Ll rn \ �'• T (� _� i \� /I (''� \._:' i I 1 1 I I I i I I i SITE LOCATION MAP NOT TO SCALE 0 400 800 t f 1" = 400' FEET PROJECT WHITE STREET LANDFILL CITY OF GREENSBORO GREENSBORO, NORTH CAROLINA TITLE GROUNDWATER SURFACE CONTOUR MAP OCTOBER 18-19, 2022 PROJECT NO. REV. FIGURE 19-131339 0 1 s 0 F I NC DEQ CORRESPONDENCE ROY COOPER Governor ELIZABETH S. BISER Secretary MICHAEL SCOTT Director NORTH CAROLINA Environmental Quality December 12, 2022 Sent Via Email - Richard.Lovett@greensboro-nc.gov Mr. Richard Lovett Environmental Compliance Support Manager City of Greensboro Field Operations 401 Patton Avenue Greensboro, NC 27406 Re: Corrective Action Evaluation Report City of Greensboro White Street Phase II Landfill Guilford County Solid Waste Permit Number 4103-MSWLF-1987 and 4103-CDLF-1998 FID 1755705 Dear Mr. Lovett, The Solid Waste Section (Section) has completed a review of the Corrective Action Evaluation Report dated November 29, 2022 and received via email on November 30, 2022 (FID 1748073). The report was submitted on your behalf by WSP Golder for the City of Greensboro White Street Phase II Landfill, Solid Waste Permit Numbers 4103-MSWLF-1987 and 4103-CDLF-1998. The Corrective Action Evaluation Report was submitted in response to the continued implementation of groundwater corrective action in accordance with the rules, the permit, and the County's approved Corrective Action Plan dated April 2009 and approved May 2009 (DINs 7393 and 7422). The selected remedy for groundwater corrective action at the landfill is Monitored Natural Attenuation (MNA) and Phytoremediation. The Corrective Action Evaluation Report states that the groundwater plumes have reached stabilization, and there is an overall trend of declining constituents of concern. As a result, the City of Greensboro is requesting the following: (1) to continue to implement MNA and Phytoremediation for the corrective action of volatile organic compounds, and (2) to remove PCE, TICE, and 1,1-DCA from the constituent of concern list. Based upon a review of the Corrective Action Evaluation Report, the Section approves the report and the requests as written at this time with one condition. Since the concentration of the constituent 1,4-Dioxane exceeds the NC 2L Groundwater Standard at the landfill, for protection of human health and the environment, please (1) add 1,4-Dioxane to the constituent of concern list, and (2) to further monitor, include one additional new surface water sampling location to be sampled semiannually beginning with the Spring 2023 monitoring event. If you have any questions or concerns regarding this letter, please feel free to contact me by email atjaclynne.drummond@ncdenr.gov or by phone at 828.296.4500. D E Q�� North Carolina Department of Environmental Quality I Division of Waste Management Asheville Regional Office 1 2090 U.S. Highway 70 1 Swannanoa, North Carolina 28778 NORTH CAROLINA - oepa emmEn.wmeo lWaifty /� 828.296.4500 Sincerely, ;�4— U-- Jaclynne Drummond Hydrogeologist Solid Waste Section, Division of Waste Management NCDEQ cc sent via email: Michael Szychowicz, City of Greensboro Ed Mussler, SW Section Chief Perry Sugg, SW Environmental Compliance Branch Head Jason Watkins, SW Field Operations Branch Head Deb Aja, SW Western District Supervisor Sherri Stanley, SW Permitting Branch Head Chuck Kirchner, SW Environmental Senior Specialist Ming Chao, SW Permitting Engineer Rachel Kirkman, WSP Golder Ben Draper, WSP Golder North Carolina Department of Environmental Quality I Division of Waste Management Asheville Regional Office 1 2090 U.S. Highway 70 1 Swannanoa, North Carolina 28778 828.296.4500 From: Kirkman, Rachel To: Drummond, Jaclvnne Cc: Lovett, Richard; Draper, Benjamin; Eichlin, Brian; Wrenn, Andrew Subject: RE: City of Greensboro White Street Phase II LF CAER Response (FID 1755705) Date: Friday, December 16, 2022 4:31:57 PM Attachments: 19131339 050 02.Ddf image002.pnng imaae003.Dna image004.pnng Good afternoon Jackie. On behalf of the City of Greensboro, we are providing this response to your December 12, 2022, correspondence related to your review of the CAER for the White Street Landfill Phase II facility. As requested, 1,4-dioxane will be added to the COC list for this facility moving forward and monitoring will continue. As shown on the attached figure, an additional surface water monitoring point (SW-6) will be added to the semi-annual monitoring program beginning with the first semi-annual event of 2023 in the area of concern that we discussed. Should you have any additional questions or concerns, please reach out to Rich Lovett with the City of Greensboro or us. We appreciate your assistance with this project. Rachel Rachel P. Kirkman, PG (AL,GA,NC,SC,TN,VA) Director, Geologist Assistant Vice President T+ 1 336-398-2807 M+ 1 336-402-5542 5B Oak Branch Drive, Greensboro, NC 27407 wsp.com I golder.com From: Drummond, Jaclynne <jaclynne.drummond@ncdenr.gov> Sent: Monday, December 12, 2022 10:40 AM To: Lovett, Richard <Richard. Lovett@greensboro-nc.gov> Cc: Michael.Szychowicz@greensboro-nc.gov; Mussler, Ed <ed.mussler@ncdenr.gov>; Sugg, William P <perry.sugg@ncdenr.gov>; Watkins, Jason <jason.watkins@ncdenr.gov>; Aja, Deborah <deborah.aja@ncdenr.gov>; Stanley, Sherri <Sherri.Stanley@ncdenr.gov>; Kirchner, Chuck <chuck.kirchner@ncdenr.gov>; Chao, Ming-tai <ming.chao@ncdenr.gov>; Kirkman, Rachel <rachel.kirkman@wsp.com>; Draper, Benjamin <benjamin.draper@wsp.com> Subject: City of Greensboro White Street Phase II LF CAER Response (FID 1755705) EXTERNAL EMAIL EXTERNAL EMAIL - We could not verify the authenticity of this message. Please be cautious when clicking on links or opening attachments. Good morning Mr. Lovett, The Solid Waste Section has completed a review of the Corrective Action Evaluation Report dated November 29, 2022 and received via email on November 30, 2022 (FID 1748073). The report was submitted on your behalf by WSP Golder for the City of Greensboro White Street Phase II Landfill, Solid Waste Permit Numbers 4103-MSWLF-1987 and 4103-CDLF-1998. A letter in response to the report is located at this direct DEQ Laserfiche link FID 1755705. If you have any questions or concerns regarding this letter, please feel free to contact me, and thank you for your continued cooperation with this matter. Have a great day, Jaclynne Drummond Jaclynne Drummond Hydrogeologist, Division of Waste Management North Carolina Department of Environmental Quality Office: (919) 819-4600 a aclynne.drummond(@ncdenr.gov Q:> NORTH CAROLINA Department of Environmental Quality Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. SOUTHERN EBUFFER AREA SW-3 LOCATED —1600 FT. WEST SW-1 LOCATED —4900 FT. WEST 400 SW-2 LOCATED --500 FT. WEST 715.5 / 700.3.3 701,5 06.8 NORTHERN EBUFFER AREA 680 \ OF WASTE roqO CLIENT CITY OF GREENSBORO CONSULTANT y SW-4 LOCATED —900 FT. EAST YYYY-MM-DD 2022-10-05 DESIGNED JWS %X%I) GOLnER PREPARED REVIEWED GOLDER ASSOCIATES NC, INC. APPROVED LEGEND O O �-1 NM PL SURFACE WATER MONITORING POINT COMPLIANCE GROUNDWATER MONITORING WELL NES / SENTINEL GROUNDWATER MONITORING WELL NONCOMPLIANCE GROUNDWATER MONITORING WELL LEACHATE SAMPLING LOCATION GROUNDWATER SURFACE CONTOUR APPROXIMATE GROUNDWATER FLOW SEGMENT USED TO CALCULATE GRADIENT NOT MEASURED STREAMS MINOR CONTOURS (2 FT. INTERVAL) MAJOR CONTOURS (10 FT. INTERVAL) APPROXIMATE LIMITS OF WASTE APPROXIMATE PROPERTY LINE PHYTOREMEDIATION EBUFFER AREA NOTES 1. TOPOGRAPHIC CONTOUR INTERVAL = 2 FEET. 2. GROUNDWATER SURFACE CONTOUR INTERVAL = 10 FEET. 3. GROUNDWATER ELEVATIONS MEASURED ON APRIL 19, 2022. 4. GROUNDWATER CONTOURS ARE BASED ON LINEAR INTERPOLATION BETWEEN AND EXTRAPOLATION FROM KNOWN DATA, TOPOGRAPHIC CONTOURS, AND KNOWN FIELD CONDITIONS. THEREFORE, GROUNDWATER CONTOURS MAY NOT REFLECT ACTUAL GROUNDWATER CONDITIONS. 5. GROUNDWATER CONTOUR LINES SHOW THE WATER TABLE SHAPE AND ELEVATION. THESE CONTOURS ARE INFERRED LINES FOLLOWING THE GROUNDWATER SURFACE AT A CONSTANT ELEVATION ABOVE SEA LEVEL. THE GROUNDWATER FLOW DIRECTION IS GENERALLY PERPENDICULAR TO THE GROUNDWATER SURFACE CONTOURS, SIMILAR TO THE RELATIONSHIP BETWEEN SURFACE WATER FLOW AND TOPOGRAPHIC CONTOURS. 6. ELEVATIONS SHOWN IN THIS DRAWING ARE IN FEET ABOVE MEAN SEA LEVEL DATUM ("MEAN SEA LEVEL DATUM" REFERS TO THE NATIONAL GEOTETIC VERTICAL DATUM (NGVD) OF 1929) AND COORDINATES ARE EXPRESSED IN TERMS OF THE STATE PLANE COORDINATE SYSTEM. 7. SURFACE WATER LOCATIONS ARE APPROXIMATE. 8. TOPOGRAPHY PROVIDED BY BRADY SURVEYING CO. FROM AERIAL PHOTOGRAPHY DATED NOVEMBER 9, 1994. TOPOGRAPHY IN VICINITY OF PHASE II AND III LANDFILLS UPDATED BASED ON AERIAL SURVEY DATED JUNE 1, 2020, PROVIDED BY CARTOGRAPHIC AERIAL MAPPING, INC. 9. 7.5 MINUTE USGS QUADRANGLE, MCLEANSVILLE, NORTH CAROLINA, 2016. ow- lk Ul VIM! Nals'" I doll J will lo SITE LOCATION MAP NOT TO SCALE 1 �11 :11 400' FEET PROJECT WHITE STREET LANDFILL - PHASE II CITY OF GREENSBORO GREENSBORO, NORTH CAROLINA TITLE GROUNDWATER SURFACE CONTOUR MAP APRIL 19, 2022 PROJECT NO. PHASE FIGURE 19-131339 300 0 2 0 From: Drummond, Jaclynne To: Wrenn, Andrew Cc: Eichlin, Brian; Draper, Benjamin; Lovett. Richard Subject: RE: [External] Laboratory Review - White Street Landfill Date: Monday, February 6, 2023 2:38:57 PM Attachments: imaae002.Dna image001pnno Andrew and Ben, Thank you for reaching out to me regarding the mercury analysis for wells MW-13 and MW-14. Per our phone conversation, resampling is not required at this time. If you have any questions, please let me know. Thank you and have a good day, Jackie Jaclynne Drummond Hydrogeologist, Division of Waste Management North Carolina Department of Environmental Quality Office: (919) 819-4600 iaclynne.drummondPncdenr.gov Q:> NORTH CAROLINA Department of Environmental Quality Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Wrenn, Andrew <andrew.wrenn@wsp.com> Sent: Monday, February 6, 2023 2:34 PM To: Drummond, Jaclynne <jaclynne.drummond@ncdenr.gov> Cc: Eichlin, Brian <brian.eichlin@wsp.com>; Draper, Benjamin <benjamin.draper@wsp.com>; Lovett, Richard <Richard.Lovett@greensboro-nc.gov> Subject: [External] Laboratory Review - White Street Landfill CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to Report Spam. Jackie, During our review of the analytical results for the Phase I and Phase II landfills, we discovered that the laboratory had not performed the mercury analysis for samples collected from wells MW-13 and MW-14. Upon noticing the omission, we requested that the lab analyze the samples out -of -hold. Mercury has not historically been detected in these wells and the analytical results (ran out -of -hold) for the recent sampling event were again non -detect. Per our earlier conversation, we wanted make sure you were aware of the situation and confirm that resampling of these wells is not necessary. Thanks again, Andrew Wrenn Consultant, Environmental Scientist T+ 1 336-398-2803 M+ 1 336-580-7530 WSP USA Inc. 5-B Oak Branch Drive Greensboro, INC 27407 wsp.com NOTICE: This communication and any attachments ("this message") may contain information which is privileged, confidential, proprietary or otherwise subject to restricted disclosure under applicable law. This message is for the sole use of the intended recipient(s). Any unauthorized use, disclosure, viewing, copying, alteration, dissemination or distribution of, or reliance on, this message is strictly prohibited. If you have received this message in error, or you are not an authorized or intended recipient, please notify the sender immediately by replying to this message, delete this message and all copies from your e-mail system and destroy any printed copies. APPENDIX GROUNDWATER AND SURFACE WATER SAMPLING LOGS %%NI) GOLDER Project Name: White Street LF Well ID: M �.. j t_I Well Diameter: 2 inches Depth to Bottom: 5 Lj, c, feet Pumping Rate: 100 mUmin. DATE: V_P(*Q IZ0ZZ GROUNDWATER SAMPLING LOG Project No./Phase No.: GL19131339 Sampler(s): Nicolas Tejeda /Johnathan Serencsics Initial Depth to Water: Sy ' n feet Water Column Thickness: 1.ZC feet System Volume: T-4 Lj mL Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated BP. MP-15 , Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge @ tJ�j CU ��iL�.,� '6eIoW ep aP r?v,n,,� Weather: Signature: QA/QC Sign Off: Date: INI IZZ Date: /(-, ��4-1,- 1 GOLDER DATE:Z�pZ� GROUNDWATER SAMPLING LOG Project Name: Well ID: White Street LF Project No./Phase No.: GL19131339 Well Diameter: _ :L Sam s) : t ler olas Te ( Nicolas p 'eda /Johnathan Serencsics Depth to Bottom:96,60 2 inches Z6.6 u feet Initial Depth to Water: 1 , � 2 feet Water Column Thickness: 5, Q feet Pumping Rate: i mUmin. System Volume: 6U mL Equipment: Turbidimeter, YSI Pro Plus, WL Meter ---_ Dedicated BP, MP-15 Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge @ I1'5 "eatner: 7'voo y , 5O s Signature: QA/QC Sign Off: Date: i0 zG (za Z Z Date: X21 "NIA GOLDER Project Name: Well ID. White Street LF Well Diameter:^2 2 inches Depth to Bottom: m 25. UU feet Pumping g Rate: mUmin DATE: Z' f i ZZ GROUNDWATER SAMPLING LOG Project No./Phase No.: GL19131339 Sampler(s): Nicolas Teieda /Johnathan Serencsics Initial Depth to Water: 21,t7S feet Water Column Thickness: 3. 1,5-feet System Volume: Pzs_ mL Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated BP, MP-15 Time tt00 l � pH (S.U.) � Sp. Cond. (US/cm) Turb (NTU) Dis OZ (mg/L) Temp. (°C) ORP (millivolts) DTW (feet) Zt .y`) 5.Z)2- I•t(� . _Zo.O Comments (weather (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge @ i 10 t Weather Signature: T\J QA/QC Sign Off: L/ � '." Date: Date: / 0 t 4 1Zu NN"%I) GOLDER Project Name: Well ID: Well Diameter: Depth to Bottom: Pumping Rate: Equipment: White Street LF 2 inches 3 2..C) feet iqu -e 12.b mUmin. DATE: j (j ZuI2� L'L GROUNDWATER SAMPLING LOG Project No./Phase No.: GL19131339 Sampler(s): Nicolas Tejeda /Johnathan Serencsics Initial Depth to Water: t�.53 feet Water Column Thickness: tP`.v� feet System Volume: mL Turbidimeter, YSI ProPlus, WL Meter Dedicated BP. MP-15 Time 05 pH (S.U.) s3���4.ys. S . Sp. Cond. (uS/cm) i 3�`9. `t Turb (NTU) 1U. i Dis O2 (mg/L) Ay ;Temp, CC) I Ci Z - 3 ;1_0RP livolts) loz .1 9 Y Ll DTW (feet) i� 5 C) 4 t) °,Ll �ltc his `(Z) S.SZ, S.� 3SZ•I 359. ��i.'t it.; 0 05-.1 o.S-cd U. Slo IS_3 t 5.°�. b'6.3 1110 ► pis u Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge @ °q6 Weather: Signature: QA/QC Sign Off: Date: k�IiZF:Lz Date: �� \\%-1) GOLDER Project Name: White Street LF Well ID: Z'-w Well Diameter: 2 inches Depth to Bottom: Z-- - feet Pumping Rate: Ay2 mlImin. DATE: —�0 GROUNDWATER SAMPLING LOG Project No./Phase No.: GL19131339 Sampler(s): Nicolas Tejeda /Johnathan Serencsics Initial Depth to Water: I q 14 U feet Water Column Thickness: IO.b� feet System Volume: (,`� mL Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated BP, MP-15 Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge @ 0r15q Weather: ��;�ny, qy, Signature: QA/QC Sign Off:, . ���� Date: Date: ����� NX%%I) GOLDER DATE: GROUNDWATER SAMPLING LOG Project Name: White Street LF Project No./Phase No.: GL19131339 Well ID: _ .( UI, Sampler(s): Nicolas Tejeda /Johnathan Serencsics Well Diameter: 2 inches Initial Depth to Water: t feet Depth to Bottom: ? 4Z� L,-, feet Water Column Thickness: Ck.�b feet Pumping Rate: _ -t mL/min. System Volume: mL Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated BP MP-15 Time pH (S.U.) 5 `Z I Sp. Cond. (US/cm) t 3 (32- Turb (NTU) 4 2Z 3.11E Dis OZ (mg/L) Z -3q Temp. (°C) 1L';.� ORP (millivolts) �. t i.(k. '4 DTW (feet) t 5_ Is.� 1t2 5.'t`1 La a� V5. ',c Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge @ ICE Weather: Signature: OA/QC Sign Off: Date: (-o �q l7'JL;`►- Date: _�_ dciu;n {� IZ� � \\%-%I) GOLDER Project Name: White Street LF Well ID: 7M _ Well Diameter: 2 inches Depth to Bottom: I% o0 feet Pumping Rate: 1g0,-0%z0 mUmin. DATE: IUlld(Z.oZ-Z- GROUNDWATER SAMPLING LOG Project No./Phase No.: GL19131339 Sampler(s): Nicolas Tejeda /Johnathan Serencsics Initial Depth to Water: feet Water Column Thickness: oi.00 feet System Volume: IQ1'�- mL Equipment: Turbidimeter, YSl ProPlus, WL Meter Dedicated BP, MP-15 Time i0'� pH (S.U.) �. o Sp. Cond. (uS/cm) S Turb (NTU) 5 Dis 02 (mg/L) 3.4 2 Temp. VC) ORP (millivolts) DTW (feet) Li( `I ci7- 95s (tq a. (c. 6. �� >". b ��� S- .3 5Z . S�. I Li -L ik:I kZ.4 12 Z 3 30 I.�� 1.� 1. Z..c�l .ql 16.a �.0 6.� G. C'JI -M -S<i.o -zit. I c� Cl �2 IvuCN 0 u6 Comments (weather conditions, color, type of sample, purge -water management, etc.). Begin Purge @ 4c:i 't" :,Ifzr Weather: oV.�rCc,cl 1C;_3 �icS r e lL�;�� -r��r, 5 It Iucv Signature: QA/QC Sign Off: Date: l U n Date: / � %) 12 2 b 6) _a NNtil) GOLDER Project Name: White Street LF Well ID: -ty- Well Diameter: 2 inches Depth to Bottom: Pumping Rate: t A . Up feet I ZO a' kU6 mUmin DATE: � o(K( 2, L z GROUNDWATER SAMPLING LOG Project No./Phase No.: GL19131339 Sampler(s): Nicolas Tejeda /Johnathan Serencsics Initial Depth to Water: tu.'40 feet Water Column Thickness: 4-L . U feet System Volume: (cLfilb mL Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated BP, MP-15 Time pH (S.U.) Sp. Cond. (uS/cm) Turb (NTU) Dis 02 (mg/L) Temp. (°C) ORP (millivolts) DTW (feet) ts3 v.3`. Z9.Z (4.1zy ►-.5 —(�.1 l 15LA1 b. 5l Z 3" Sl_ a i . 07 (bz.4 o. t is-s >It 24t-- SZ. a• .q t5. ' -��.� *>(s.sti C I�UO -' -zv S1 qt.o 0•(L't -- to;5. ' >15. -0 G-syt � 9 N. 1-1 0-`l tS. 1 - focl. 1 �31 6. -5 244 c 2 0' Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge @ 1531 Weather: Sin h� , go5 Signature: QA/QC Sign Off: Date: Date: U bao_: \Ntil) GOLDER Project Name: WAAe_,Sttt4 U Well ID: NUn1 _ ( Well Diameter: 2 inches Depth to Bottom: 12,.4o feet Pumping Rate: }gyp _t' -(("Q mUmin. DATE: GROUNDWATER SAMPLING LOG Project No./Phase No.: C-,L 1q ( 3I 33`1 Sampler(s): Nicolas Tejeda-Torres Initial Depth to Water: 11 (05 feet Water Column Thickness: (, ,�5 feet System Volume: 5—to Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated BP, MP-15 Time l2- pH (S.U.) S ,�,`� Sp. Cond. (US/cm) 23".2 Turb (NTU) 2t•5 Dis OZ (mg/L) \_\ -1-k- Temp. (°C) ORP (millivolts) -��t. DTW (feet) f\- Q,Z 17-is 5• Z��.� 23 I 0G tc�.S �1�.i 12-L.t is-oc1 1 L D b. 1-'t 2'L L Q. C1 7 124v v 21ri.ci 13,2 t.s—1 1� Cl 0.5 IL(. "5 (I-q-5 2 5.3 q.� ti_stu I�.c o: ( >14. Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge @ S Weather: Signature: QA/QC Sign Off: Date: �v z Date: _�6 I_Gkv ) \Ntil) COLDER Project Name: Well ID: Well Diameter: 2 inches Depth to Bottom: 25, op feet Pumping Rate: I Lo, mUmin. DATE: GROUNDWATER SAMPLING LOG Project No./Phase No.: (-I L I'(t3k 33 01 Sampler(s): Nicolas Teieda-Torres Initial Depth to Water: t I ,q C) feet Water Column Thickness: 1-� .1 feel System Volume: 69`5 Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated BP, MP-15 Time pH (S.U.) Sp. Cond. (US/cm) Turb (NTU) Dis 02 (mg/L) Temp. (°C) ORP (millivolts) DTW (feet) G.- z °3T C"i 43 C iz.1 1526 b .210 TT 0. U) L( R-kk i' ( S25 ` S' 1(0.6 z - y 1z. k15 Is. 2j L ?. Y �.C� 23 IS 6. L3 ►-z i - Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge Q (-,—)lb Weather: Signature: QA/QC Sign Off: Date: Date: N\til) GOLDER Project Name: White Street LF Well ID: 5M\X _ � Well Diameter: 2 inches Depth to Bottom: Z S. qd feet Pumping Rate: Ic< mUmin. DATE: _16 1-�6 ! ;X2Z GROUNDWATER SAMPLING LOG Project No./Phase No.: GL19131339 Sampler(s): Nicolas Tejeda /Johnathan Serencsics Initial Depth to Water: 1Z.t, feet Water Column Thickness feet System Volume: mL Equipment: Turbidimeter, YSI ProPlus WL Meter Dedicated BP. MP-15 Time pH Sp. Cond. (US/CM) Turb Dis 02 Temp. (°C) ORP (millivolts) DTW (feet) LL(S..U.) +(NTU) n(mg/L) '31( 16 L 'c I i5 o.N i2514 boti q.I� Irr �,�Z 1(✓.G �Ll Z,S b SC -23 S"�E� L, t? ,y 11`1,L� ''• t`i tau j E;,I "� • �I o • �� t�:3 i 32� 12.5�Z Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge @ Weather: 5lwtny.ga- Signature: QA/QC Sign Off: Date: (Zdzz Date: Z-_2— :;C) \\tiI) GOLDER Project Name: White Street LF Well ID: 11 - 4- Well Diameter: 2 inches Depth to Bottom: y feet Pumping Rate: , �' mLJmin. DATE: A( GROUNDWATER SAMPLING LOG Project No./phase No.: GL19131339 Sampler(s): Nicolas Tejeda /Johnathan Serencsics Initial Depth to Water: 1 ; AL feet Water Column Thickness: ;1. 1,L feet System Volume: —+IC mL Equipment: Turbidimeter, YSl ProPlus WL Meter Dedicated BP. MP-15 Time pH (S.U.) Sp. Cond. (US/cm) Turb (NTU) Dis OZ (mg/L) Temp. CC) ORP (millivolts) DTW (feet) 13 i� �.� H �,.�r �. 15; r✓� 1L'Az 61 0. LbV1^ t• I• Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Pure @ 15'04� Weather: '50, Signature: Date: )91 C6 Z32_ Date: , , QA/QC Sign Off: ����f �� o ' \\til) GOLDER Project Name: Well ID: _ Well Diameter: Depth to Bottom: Pumping Rate: Equipment: White Street LF 2 inches WS(5 feet 160 mL/min. DATE: tOI(4 1 Zb`2t GROUNDWATER SAMPLING LOG Project No./Phase No.: GL19131339 Sampler(s): Nicolas Tejeda /Johnathan Serencsics Initial Depth to Water: 112, S L feet Water Column Thickness: feet System Volume: `Lj y 3 mL Turbidimeter, YS/ PrOPlus, WL Meter Dedicated BP, MP-15 ��I Comments (weather conditions, color, type of sample, purge -water management, etc.): Be in Pure @ ' ^ �; Weather: a n Signature: QA/QC Sign Off: Date: 10 iZc l ti ZZ Date: _40�/'7 � \\til) GOLDER Project Name: White Street LF Well ID: 1 ` b Well Diameter: 2 inches Depth to Bottom: feet Pumping Rate: mUmin. Equipment: Turbidimeter, YSI Pro Dedicated BP, MP-15 DATE: 1b ( "-117 p2 GROUNDWATER SAMPLING LOG Project No./Phase No.: GL19131339 Sampler(s): Nicolas Tejeda /Johnathan Serencsics Initial Depth to Water: cos _ feet Water Column Thickness: Z�' I--- feet System Volume: - Z mL WL Meter Temp. (°C) v ORP (millivolts) �� DTW (feet) 3 Time I 5'7Ll pH (S.U.) Sp. Cond. (US/cm) V;0 Turb (NTU) 1, Dis 02 (mg/L) a• `t li 0.`{-4 C) LI 1L '. Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge @ t 5 PS Weather: -5Z� Signature: QA/QC Sign Off: ✓ � n ' ` /. Date: Date: 1(J N\til) GOLDER Project Name: z � t 0_ A L" Well ID: _ '3' _ Well Diameter: 2 inches Depth to Bottom: 1 w .4 u feet Pumping Rate: (()D mUmin. DATE:i1- GROUNDWATER SAMPLING LOG Project No./Phase No.: (-,L I ciI 3133 G Sampler(s): Nicolas Tejeda-Torres Initial Depth to Water: I 2 feet Water Column Thickness: S. 1 feet System Volume: }� Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated BP, MP-15 Time pH (S.U.) Sp. Cond. (uS/cm) Turb (NTU) Dis OZ (mg/L) Temp. (IC) ORP (millivolts) DTW (feet) 3f9 5.35 11• i ClLi 15,5 3 Z i S-i 1*S3H 5.57- 12.3 0•qq IJ.S 83.-L i .(oo I V S,Z_ib 0 SD G. ub l5.�5 1o"k.3 13.(oj (1>4 S- Sl 21 0_ o (5• 20 �3.�� 1 34 °I 15.4 C, -4 q5 • 11 0.'4 l U (o . o �� � C15 � • cm 0 . 4 115,15 ( 1. 9 I q . ,L v.a (s. Ob 14.3-q Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge @ 13Zy Weather: Signature: II � QA/QC Sign Off: Dater Z Date: \\til) GOLDER Project Name: Well ID: Well Diameter: Depth to Bottom Pumping Rate: Equipment: White Street LF 11• tZ 2 inches Zz, -C _feet j pC, mUmin DATE: i b I ZC I Zc1 ZZ GROUNDWATER SAMPLING LOG Project No./Phase No.: GL19131339 Sampler(s): Nicolas Tejeda /Johnathan Serencsics Initial Depth to Water: 3, �l feet Water Column Thickness: '� feet System Volume: mL Turbidimeter, YSI ProPlus, WL Meter Dedicated BP, MP-15 Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Pure @ ;b�'� Weather: �tw,.,,►G, Signature:Date: C, i'ZD (2b ZL QA/QC Sign OffP/� : 7,; �,,,,���/ Date: D DATE: (6�1,c U -z %%%I)I) G O L D E R SURFACE WATER SAMPLING LOG Project Name: _ Sample ID: _ Sampling Location: Equipment: White Street LF Time IZZ S.U.pH Sp. Cond. US/cm Turb. ntu Dis. 02 mg/L �6 Temp. °C %. ORP my Project No./Phase No.: GL19131339 Sampler(s): Nicolas Tejeda /Johnathan Serencsics YSI, Turbidimeter, hardness Kit k Surface Water Sampling Location Sketch Comments (sample methodology, weather conditions, color, silt, etc.): Signature: Date: (CWz0z'?— QA OA/OC Sign Off: aL Date: In %\til) GOLDER Project Name: _ Sample ID: _ Sampling Location: Equipment: DATE: �c5 ZtlZo zz SURFACE WATER SAMPLING LOG White Street LF Project No./Phase No.: Sampler(�s)`: Nicolas In/Z* Gl - l f- C ClrA'f <* YSI, Turbidimeter, hardness Kit Time pH s.u. Sp. Cond. us/cm Turb. ntu Z Dis. 02 mg/L Temp. 0C 3 ORP my Surface Water Sampli GL19131339 jeda /Johnathan Serencsics v of I J ME Comments (sample methodology, weather conditions, color, silt, etc.): J 61&ty Z (0 w1 tt-- Signature: Location Sketch Date: f b(?i 17 0 2-`' QA/QC Sign Off: Ka2- �Y � Date: I () rL 1 � �;. DATE: % N J) G 4 L D E R SURFACE WATER SAMPLING LOG Project Name: White Street LF Project NoRhase No.: GL19131339 Sample ID: 5W - 3 Sampler(s): Nicolas Tejeda /Johnathan Serencsics Sampling Location: 1"«lR. old -(ycCA*.A u[l A Wh (2- skr�d Equipment: YSI, Turbidimeter, hardness Kit Time lb pH S.U. 6Z Sp. Cond. US/cm Turb. ntu ,`t?jp Dis. 02 mg/L q Temp. oC ORP my ��•� Surface Water Sampling Location Sketch se-e- V art � o l �a� l\ t 1 I prr\U 'VV T(i!4("J'k l Comments (sample methodology, weather conditions, color, silt, etc.): Signature: QA/QC Sign Off: Date: (,�j (t( Z.aLZ Date: NNtil) COLDER DATE: io`2c, L'Z SURFACE WATER SAMPLING LOG Project Name: White Street LF Project No./Phase No.: GL19131339 Sample ID: )w -q Sampler(s): Nicolas Tejeda /Johnathan Serencsics Sampling Location: Jf b (kn(<iw rL tL'A Lx'4AW A-kA dl, r(as NC'-y 2��7 Equipment: YSI, Turbidimeter, hardness Kit Surface Water Sampling Location Sketch Time pH S.U. Sp. Cond. us/cm (S�•2 Turb. ntu Dis. 02 mg/L Temp. aC v �f ORP my �2(� Comments (sample methodology, weather conditions, color, silt, etc.): Signature: QA/QC Sign Off: Date: (dLulZZ— Date: ) 0 2 f / I- 2 DATE: taA2.t( 2UZ2 X% %%)) G O L D E R SURFACE WATER SAMPLING LOG Project Name: White Street LF Project No./Phase No.: GL19131339 Sample ID: Skj—S Sampler(s): Nicolas Tejeda /Johnathan Serencsics Sampling Location: -Lr PhasQ tF , "ay, 5Mw -( Equipment: YSI, Turbidimeter, hardness Kit Time pH S.U. 4.6 Sp. Cond. US/cm Turb. ntu •�� Dis. 02 mg/L Temp. °C ORP my 33 3 Surface Water Sampling Location Sketch SP.► 5- 4- 16� Fkc, � L �- z Comments (sample methodology, weather conditions, color, silt, etc.): Pa rJ' P%05'• Z51 w"11C. Signature: Date: (6 QA/QC Sign Off: Date: APPENDIX OCTOBER 2022 CERTIFICATE -OF - ANALYSIS, CHAIN -OF -CUSTODY FORMS. AND LABORATORY DATA REVIEWS 2�SQ pCCgF ENCO Laboratories 9e0 Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Wednesday, February 8, 2023 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 1668421.107, Project Name/Desc: White Street LF-Phase II Non -Routine ENCO Workorder(s): CF14772 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Friday, October 21, 2022. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Amanda L. Gaines Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 1 of 22 (� �Eo www.encolabs.com PROJECT NARRATIVE Date: February 8, 2023 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase II Non -Routine Lab ID: CF14772 Overview This report is an amendment to the original report dated November 15, 2022 for this work order. This report was revisedto correct the dilution fator for Chloride and Sulfate for sample SWM-3. Environmental Conservation Laboratories, Inc. (ENCO) analyzed all submitted samples in accordance with the methods referenced in the laboratory report. Any particular difficulties encountered during sample handling by ENCO are discussed in the QC Remarks section below. Quality Control Samples The 8260D LCS exhibited a high bias for Bromomethane and Isobutyl alcohol; however, these analytes were not detected in the associated samples. The spike recoveries for Chloride, Nitrate/Nitrite, and Sulfate were outside control limits for the MS and/or MSD samples, the precision between duplicate spikes of Nitrate/Nitrite exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these analytes. Quality Control Remarks The 8260D surrogate spike recovery of 4-Bromodluorobenzene was outside of acceptance criteria. The samples were approved based on the recoveries of other surrogate standards. Other Comments All samples received under this work order arrived in acceptable conditions. The samples were not checked for chlorine, as it is not required. The analytical data presented in this report are consistent with the methods as referenced in the analytical report. Any exceptions or deviations are noted in the QC remarks section of this narrative or in the Flags/Notes and Definitions section of the report. Released By: Environmental Conservation Laboratories, Inc. Amanda Gaines Project Manager FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 2 of 22 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303-SMW1 Lab ID: CF14772-01 Sampled: 10/20/22 12:45 Received: 10/21/22 14:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 11/03/22 10/25/22 19:31 10/27/22 06:03 Client ID: 4303-SMW3 Lab ID: CF14772-02 Sampled: 10/20/22 15:35 Received: 10/21/22 14:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 300.0 NO PREP 11/17/22 10/27/22 09:56 10/27/22 15:37 EPA 353.2 NO PREP 10/22/22 15:35 10/21/22 15:22 10/21/22 17:27 EPA 353.2 [CALC] 10/22/22 15:35 10/24/22 09:11 10/24/22 13:41 EPA 353.2 NO PREP 11/17/22 10/24/22 09:11 10/24/22 13:41 EPA 8260D EPA 5030B_MS 11/03/22 10/25/22 19:31 10/27/22 06:31 Client ID: 4303-SMW4 Lab ID: CF14772-03 Sampled: 10/20/22 11:05 Received: 10/21/22 14:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 5030B_MS 11/03/22 10/25/22 19:31 10/27/22 07:00 Client ID: 4303-II3B Lab ID: CF14772-04 Sampled: 10/20/22 10:30 Received: 10/21/22 14:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 11/03/22 10/25/22 19:31 10/27/22 07:30 Client ID: 4103-II9 Lab ID: CF14772-05 Sampled: 10/20/22 14:09 Received: 10/21/22 14:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time EPA 300.0 NO PREP 11/17/22 10/27/22 09:56 10/27/22 15:51 EPA 353.2 NO PREP 10/22/22 14:09 10/21/22 15:22 10/21/22 17:28 EPA 353.2 [CALC] 10/22/22 14:09 10/24/22 09:11 10/24/22 13:43 EPA 353.2 NO PREP 11/17/22 10/24/22 09:11 10/24/22 13:43 EPA 8260D EPA 503013_MS 11/03/22 10/25/22 19:31 10/27/22 07:59 Client ID: 4303-Trip Blank Lab ID: CF14772-06 Sampled: 10/20/22 10:30 Received: 10/21/22 14:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 11/03/22 10/25/22 19:31 10/27/22 01:13 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 3 of 22 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303-SMW1 Lab ID: CF14772-01 Analvte Results Flag MDL PQL Units Method Notes 1,1-Dichloroethane 0.71 J 0.13 1.0 ug/L EPA 8260D cis-1,2-Dichloroethene 0.44 J 0.15 1.0 ug/L EPA 8260D Client ID: 4303-SMW3 Lab ID: CF14772-02 Analvte Results Flag MDL PQL Units Method Notes 1,1-Dichloroethane 3.9 0.13 1.0 ug/L EPA 8260D 1,4-Dichlorobenzene 1.1 0.19 1.0 ug/L EPA 8260D Chloride 23000 2200 5000 ug/L EPA 300.0 Chlorobenzene 0.55 J 0.17 1.0 ug/L EPA 8260D cis-1,2-Dichloroethene 10 0.15 1.0 ug/L EPA 8260D Sulfate as SO4 31000 2900 5000 ug/L EPA 300.0 Vinyl chloride 1.5 0.32 1.0 ug/L EPA 8260D Client ID: 4303-II3B Lab ID: CF14772-04 Analvte Results Flag MDL PQL Units Method Notes 1,1-Dichloroethane 0.83 J 0.13 1.0 ug/L EPA 8260D Client ID: 4103-II9 Lab ID: CF14772-05 Analvte Results Flag MDL PQL Units Method Notes 1,1-Dichloroethane 1.3 0.13 1.0 ug/L EPA 8260D cis-1,2-Dichloroethene 0.95 J 0.15 1.0 ug/L EPA 8260D Nitrate as N 0.18 0.041 0.10 mg/L EPA 353.2 Nitrate/Nitrite as N 0.18 0.041 0.10 mg/L EPA 353.2 Sulfate as SO4 12000 2900 5000 ug/L EPA 300.0 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 4 of 22