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HomeMy WebLinkAboutMO-3143_7079_CA_MRP_20230725SUBSEQUENT MONITORING REPORT RIMTRAX CORPORATION (INCIDENT NO. 7079) 10701 REAMES ROAD CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA ESP Project No. 23-00200-008 Prepared For: North Carolina Department of Environmental Quality Division of Waste Management 1646 Mail Service Center Raleigh, North Carolina 27699-1646 Prepared By: ESP Associates, Inc. P. O. Box 7030 Charlotte, North Carolina 28241 July 25, 2023 ESP Associates, Inc. P.O. Box 7030 • Charlotte, NC 28241 1.800.960.7317 • NC: 704.583.4949, fax 704.583.4950 • SC: 803.802.2440, fax 803.802.2515 www.espassociates.com July 25, 2023 Ms. Sharon Ghiold North Carolina Department of Environmental Quality Division of Waste Management 1646 Mail Service Center Raleigh, North Carolina 27699-1646 Email: sharon.ghiold@ncdenr.gov Reference: SUBSEQUENT MONITORING REPORT Rimtrax Corporation (Incident #7079) 10701 Reames Road Charlotte, Mecklenburg County, North Carolina ESP Project No. 23-00200-008 Dear Ms. Ghiold: ESP Associates, Inc. (ESP) is pleased to present this Subsequent Monitoring Report documenting activities performed at the subject site, Rimtrax Corporation, in accordance with North Carolina Department of Environmental Quality (NCDEQ), Task Authorization No. 1, approved on May 23, 2023. The subject site is located at 10701 Reams Road in Charlotte, North Carolina. We appreciate the opportunity to provide environmental services on this project. If you should have any questions, please do not hesitate to contact us at (704) 506-7618. Sincerely, ESP Associates, Inc. Matthew R. Craig Christopher J. Ward, PG, RSM Project Manager Senior Geologist Attachment – Subsequent Monitoring Report TABLE OF CONTENTS Section Page SITE INFORMATION ..................................................................................................................... i EXECUTIVE SUMMARY ............................................................................................................. iii 1.0 INTRODUCTION ............................................................................................................... 1 1.1 SITE SETTING ........................................................................................................... 1 1.2 SITE GEOLOGY AND HYDROGEOLOGY ................................................................. 1 1.3 SURFACE WATER ..................................................................................................... 2 1.4 WATER SUPPLY WELLS ........................................................................................... 2 2.0 SITE HISTORY .................................................................................................................. 3 3.0 FIELD ACTIVITIES ........................................................................................................... 6 3.1 WATER LEVEL GAUGING ........................................................................................ 6 3.2 GROUNDWATER SAMPLING ................................................................................... 6 3.3 WATER SUPPLY WELL SAMPLING ......................................................................... 7 3.4 SURFACE WATER SAMPLING ................................................................................. 7 3.5 FIELD QUALITY CONTROL SAMPLING AND ANALYSIS ....................................... 8 4.0 ANALYTICAL RESULTS .................................................................................................. 9 5.0 CONCLUSIONS AND RECOMMENDATIONS ............................................................... 10 6.0 REFERENCES ................................................................................................................. 11 FIGURES Figure 1 USGS Topographic Site Location Map Figure 2 Site Map Figure 3 Groundwater Elevation Map Figure 4 Groundwater Results Map Figure 5 Benzene Isoconcentration Map TABLES Table 1 Monitoring Well Construction and Groundwater Elevation Data Table 2 Summary of Groundwater Analytical Results TABLE OF CONTENTS (Continued) APPENDICES Appendix A Tables of Previous Groundwater Elevations and Analytical Results Appendix B Photographs Appendix C Field Documentation Appendix D Laboratory Data Reports Subsequent Monitoring Report ESP Project No. 23-00200-008 Rimtrax Corporation (Incident #7079) July 25, 2023 i SITE INFORMATION Date of Report: July 25, 2023 NCDEQ Incident No: 7079 NCDEQ UST No.: WS-2171 Site Name: Rimtrax Corporation Site Location: 10701 Reames Road Charlotte, Mecklenburg County, North Carolina 28269 Latitude: N 35.347500 Longitude: W -80.839444 UST Owner/ Operator: Former Rimtrax Corporation c/o The Estate of Mr. Bill Wooten 1105 Harvey Street Raleigh, North Carolina 27608 Current Property Owner: CTE Reams Road LLC 9000 Statesville Road Charlotte, North Carolina 28269 (704) 921-1178 Current Property Occupant: The Carolina CAT Rental Store (704) 280-1200 Consultant: ESP Associates, Inc. P.O. Box 7030 Charlotte, North Carolina 28241 (704) 583-4949 Laboratory: Pace Analytical Services, LLC NCDEQ No. 5342 9800 Kincey Avenue Huntersville, North Carolina 28028 (704) 875-9092 Release Information: Release Discovery Date: September 1991 Estimate Quantity: Unknown Cause of Release: Corrosion of USTs Source of Release: Corrosion of USTs Currently Active Tanks: None, tanks removed in September 1991 Subsequent Monitoring Report ESP Project No. 23-00200-008 Rimtrax Corporation (Incident #7079) July 25, 2023 ii I, Christopher J. Ward, a Professional Geologist for ESP Associates, Inc., do certify that the information contained in this report is correct and accurate to the best of my knowledge. ESP Associates, Inc. is licensed to practice both geology and engineering in North Carolina. ESP Associates, Inc.’ certification numbers are: Geology: C-556 / Engineering: F-1407 Subsequent Monitoring Report ESP Project No. 23-00200-008 Rimtrax Corporation (Incident #7079) July 25, 2023 iii EXECUTIVE SUMMARY This executive summary section provides an abbreviated reporting of our Site observations and findings. Refer to the main text and appendices for a complete reporting of our observations and findings. ESP Associates, Inc. (ESP) has completed a Subsequent Monitoring Report documenting assessment activity performed at the Rimtrax Corporation site (Incident No. 7079). The site is an approximate 5.898-acre developed site (Tax Parcel No. 02526104) located at 10701 Reames Road in Charlotte, Mecklenburg County, North Carolina. This report was completed to summarize the findings of assessment activities performed on June 1, 2023, in accordance with North Carolina Department of Environmental Quality (NCDEQ), Task Authorization No. 1, approved on May 23, 2023. The work was performed as part of the State Lead Contract #N70522-D between NCDEQ and ESP. This report was prepared in general accordance with the 15A NCAC 2L .0115 regulations and the NCDEQ Underground Storage Tank (UST) Section Guidelines for Assessment and Corrective Action for UST Releases, January 2021, under the supervision of Christopher J. Ward, North Carolina registered professional geologist (North Carolina License No. 1600). On June 1, 2023, ESP performed the following field activities: • Gauging static water levels in site monitoring wells MW-2R, MW-5R and MW-6R; • Collecting groundwater samples from monitoring wells MW-2R and MW-5R, along with a field duplicate. Although planned, ESP was unable to obtain a water sample from monitoring well MW-6R as the well was considered dry due to insufficient recharge following purging; and • Collecting surface water sample SW-1 from the unnamed intermittent creek along the eastern boundary of the site. Collected water samples were analyzed for volatile organic compounds (VOCs) for comparison to both North Carolina Groundwater Quality Standards 15A NCAC 2L .0202 (2L Standards) and Gross Contaminant Levels (GCLs). Results of the assessment activities revealed the following: • Static water level depths ranged from 7.55 ft to 14.70 ft bTOC. • The general direction of groundwater flow beneath the site is to the north-northeast. • The site and surrounding areas are connected to municipal water provided by Charlotte Water. Subsequent Monitoring Report ESP Project No. 23-00200-008 Rimtrax Corporation (Incident #7079) July 25, 2023 iv • No active water supply wells are located within 1,000-feet of the site; • Due to the lack of significant recharge following purging of MW-6R, a sufficient volume of water was not available for sampling. • MTBE was the only analyte detected above its 2L standard of 20 µg/L in monitoring well MW-2R (238 µg/L); • In monitoring well MW-5R, analytes generally increased in concentrations with benzene (356 µg/L), ethylbenzene (1,220 µg/L), isopropylbenzene (72.9 µg/L), MTBE (102 µg/L), naphthalene (477 µg/L), and n-propylbenzene (292 µg/L) detected above their respective 2Lstandards; and • The only analyte detected in surface water sample SW-1 was ethylbenzene at an estimated concentration of 0.45J µg/L, which is significantly below its 2L standard of 600 µg/L. The general trend in groundwater contaminant concentrations at the site has been relatively stable since 2020. Groundwater concentrations have remained above 2L standards; however, no GCLs have been exceeded since 2006. Based on the above results, ESP offers the following recommendations: • Continue to sample site monitoring wells and surface water on a semiannual basis to further understand concentration trends and plume stability; • Use low flow sampling to collect a representative groundwater sample from MW-6R, which is a low producing monitoring well; and • Install oxidation sleeves in monitoring wells MW-2R and MW-5R to attempt to reduce VOC concentrations. Subsequent Monitoring Report ESP Project No. 23-00200-008 Rimtrax Corporation (Incident #7079) July 25, 2023 1 1.0 INTRODUCTION 1.1 Site Setting The Rimtrax Corporation site is an approximate 5.898-acre developed site (Tax Parcel No. 02526104) located at 10701 Reames Road in Charlotte, Mecklenburg County, North Carolina (see Figures 1 and 2). The site includes an approximate 21,805-sqft active service garage/office building built in 1977 along with paved parking on the southwestern and southeastern portions of the tax parcel while the northern portion of the tax parcel includes dirt and gravel surfaces. The on-site structure is currently occupied by Carolina CAT Rental Store (owned by CTE Reams Road LLC). The site is bounded to the north by Maxi Crane Works commercial property, to the east by an Estes Express Lines commercial facility, to the west by an equipment rental commercial facility, and to the south by Old Reames Road and beyond by a gas station. 1.2 Site Geology and Hydrogeology A consideration of surface and subsurface drainage and geology are of interest since they provide an indication of the direction that contamination, if present on-site or off-site, could be transported. The site is located within the Charlotte Belt of the Piedmont Physiographic Province. The Piedmont Physiographic Province generally consists of low to medium elevation, rounded hills, and long rolling northeast to southwest trending ridges with incised creeks and river channels. Rock at the site is described as Metamorphosed Quartz Diorite - foliated to massive. In-place chemical and physical weathering of parent rocks typically form residual soils in the Piedmont region. Weathering is facilitated by the presence of fractures, joints, and less resistant minerals in the rock. In areas not altered by erosion, alluvial deposition or the activities of man, the typical residual soil profile consists of clay-rich unconsolidated materials at the surface, transitioning to sandy silts and silty sands at depth. Typically, the boundary between soil and rock is not sharply defined. This transitional zone is termed “partially weathered rock” or saprolite. Information obtained from the Web Soil Survey for Mecklenburg County depicts soils on the site as Cecil sandy clay loam, 2 to 8 percent slopes, moderately eroded (CeB2); Cecil sandy clay loam, 8 to 15 percent slopes, moderately eroded (CeD2); and Urban land (Ur). In the Piedmont, groundwater generally occurs in pore spaces within soils and in the structural features present in the underlying rock (i.e., joints, fractures, and faults). Recharge to the water table is primarily by precipitation infiltrating the surficial soils and percolating downward under Subsequent Monitoring Report ESP Project No. 23-00200-008 Rimtrax Corporation (Incident #7079) July 25, 2023 2 the influence of gravity to the water table. Typically, the water table is not a level surface, but a subdued reflection of the land surface. The depth to the water table is not consistent and is dependent upon several factors that include the amount of rainfall, permeability of the soil, the extent of fracturing in the underlying rock and the influences of groundwater pumping. The direction and movement of groundwater through soil is generally dependent on soil type, the presence of relict structures, and the textures of the underlying rock. Fractures, faults, folds, and foliation planes affect the migration of groundwater in rock. No major geologic features (faults, etc.) are present at or near the site. Groundwater typically flows in directions parallel to the ground surface and under the influence of gravity, migrates to discharge points such as surface water features, the toes of slopes or natural springs. Fluctuations in the depth of the water table can be expected depending on variations in precipitation, surface water run-off and other factors. Normally, the highest levels of the water table occur in late winter and spring and the lowest levels occur in the late summer and fall. Based on historical data and June 1, 2023 water level measurements, groundwater at the site is expected to flow generally to the north and northeast. 1.3 Surface Water A drainage steam is located along the site’s eastern boundary (see Figures 1 and 2). The drainage is a natural intermittent stream and serves as a tributary of Dixon Branch Watershed. This stream is the only surface water feature within 500 feet of the site. 1.4 Water Supply Wells Based on previous receptor surveys conducted by others, a water supply well (WSW-1) was identified on a down-gradient property located at 10815 Reames Road (currently Estes Express Lines), approximately 275 feet northeast of the source area (see Figure 2). The water supply well at the Estes Express Lines property was reportedly abandoned. According to the receptor information, the remaining properties near the site are reportedly connected to municipal water. Subsequent Monitoring Report ESP Project No. 23-00200-008 Rimtrax Corporation (Incident #7079) July 25, 2023 3 2.0 SITE HISTORY The following description of historical site activities was obtained from a report titled “State-Lead Monitoring Report, Rimtrax Corporation, 10701 Reames Road, Charlotte Mecklenburg County, North Carolina” dated February 10, 2021, by Terracon Consultants Inc. (Terracon). • The site and surrounding areas are connected to municipal water provided by Charlotte Water. • The site’s former UST system comprised of one 1,034-gallon diesel UST and one 987- gallon gasoline UST and associated piping was removed in September 1991 when a leak of petroleum constituents was discovered as a result of corrosion of the tanks. Approximately 180 cubic yards of petroleum impacted soils were removed from the former tank basin to a depth of sixteen feet. • Monitoring wells MW-1 through MW-12 were installed between December 1991 and May 1992. Petroleum constituents exceeded GCLs in MW-5. • Free product recovery was performed from MW-6 by Cooper Environmental Inc. (CEI) from March to June of 1994. Following free product recovery, CEI conducted a soil venting pilot study (feasibility study) and installed additional monitoring well MW-5A. • In June 1994, a temporary air sparge well (AS) and a soil vapor extraction (SVE) point were installed as part of a Corrective Action Plan (CAP). Petroleum constituents were detected that exceeded GCLs in MW-5A. A permanent, on-site SVE system was subsequently installed. • CEI performed multiple follow-up sampling events on a semi-annual basis from 1995 through 1999. Responsibility for the site remediation was given to The Structures Group (TSG). • In 2002, TSG installed two replacement monitoring wells that were destroyed due to exposure to heavy machinery and large construction vehicles over time. The wells replaced were not specified. TSG abandoned the on-site monitoring wells in November 2004. It is unclear as to the reasoning behind the abandonment of the monitoring wells. It is also unclear when the remediation system was deactivated and removed from the site. • During a visit to the site in July 2019, Terracon noted a large portion of the source area had been paved with concrete and fresh gravel had been placed on the site after the current tenant occupied the property. After multiple attempts to locate the on-site wells, Terracon was unable to locate any monitoring wells. Terracon also spoke with several employees of the on-site tenant The CAT Rental Store regarding monitoring well locations. Terracon also contacted the adjacent facility to the east regarding the use of a water supply well formerly located on the property. A water supply well use Subsequent Monitoring Report ESP Project No. 23-00200-008 Rimtrax Corporation (Incident #7079) July 25, 2023 4 questionnaire was sent by certified mail to the adjacent property owner on July 16, 2019. According to Mr. Kevin Fitz, Director of Facility Maintenance for Estes Express Lines, the supply well was formerly utilized to supply water for the fire suppression system at the facility. According to Mr. Fitz, the facility has been connected to municipal water and the water tower has been drained, but the supply well has not been properly abandoned. • On October 9, 2019, Terracon installed monitoring well MW-5R in proximity to the former location of MW-5. Terracon collected a soil sample (SB-01) from a depth of 5-10 ft below ground surface (bgs). A groundwater sample was also collected from MW-5R which revealed that benzene, ethylbenzene, isopropylbenzene, MTBE, naphthalene, n- propylbenzene, 1,2,4 trimethylbenzene, total xylenes, and several aromatics were present above 2L standards. • Terracon personnel mobilized to the site on November 30, 2020 to install two additional groundwater monitoring wells (MW-2R and MW-6R) to replace destroyed wells in their respective locations and evaluate current groundwater conditions. Monitoring well MW-6R was installed north of the on-site vehicle wash bay. Monitoring well MW-2R was installed southwest of the on-site drainage feature within a vehicle staging area. The two monitoring wells were advanced to a depth of approximately 18 feet bgs. • On December 31, 2020, Terracon collected groundwater samples from monitoring wells MW-2R, MW-5R, and MW-6R and a surface water sample. Benzene (254 µg/L), ethylbenzene (905 µg/L), MTBE (34.2 µg/L), n-propylbenzene (195 µg/L), and naphthalene (290 µg/L) were detected in well MW-5R at concentrations that exceed their respective 2L standards. MTBE was detected in well MW-2R (496 µg/L) at a concentration that exceeds its respective 2L standard. Various other constituents of concern were detected in wells MW-2R, MW-5R, and MW-6R at concentrations below their respective 2L standards. MTBE (0.75 µg/L) was detected in the surface water sample collected from the on-site drainage feature at a concentration below the 2L standard for MTBE. • On March 31, 2021, Terracon collected groundwater samples from the on-site monitoring wells MW-2R, MW-5R, and MW-6R. Benzene (244 µg/L), ethylbenzene (964 µg/L), MTBE (30.6 µg/L), n-propylbenzene (207 µg/L), naphthalene (321 µg/L) and total xylenes (660.9 µg/L) were detected in MW-5R above their respective 2L standards. MTBE was detected in MW-2R (297 µg/L) above its 2L standard while benzene (11.9 µg/L) was detected in MW-6R above its 2L standard. Various other constituents of concern were detected in wells MW-2R, MW-5R, and MW-6R at concentrations below their respective 2L standards. No constituents were detected above the GCLs. • Terracon stated in their February 10, 2021 report, that although MTBE is present in the surface water sample collected in December 2020, the RBCA Tool Kit® Domenico Subsequent Monitoring Report ESP Project No. 23-00200-008 Rimtrax Corporation (Incident #7079) July 25, 2023 5 Model with First-Order Decay model simulation results indicate the concentrations will not exceed the regulatory standards. The GSI Mann-Kendall Tool Kit® modeling results indicate most of the detected constituent concentrations in the groundwater are decreasing. Historical analytical data support biodegradation conditions at the site. • On December 6, 2021 and on March 7, 2022, Terracon collected groundwater samples from site monitoring wells MW-2R, MW-5R, and MW-6R and surface water sample SW-1. Benzene, ethylbenzene, MTBE, and n-propylbenzene were detected above 2L standards in MW-5R while MTBE was the only analyte detected above 2L standards in MW-2R or surface water sample SW-1. No analytes were reported above GCLs. Historical groundwater elevations and analytical results are provided in Appendix A. Subsequent Monitoring Report ESP Project No. 23-00200-008 Rimtrax Corporation (Incident #7079) July 25, 2023 6 3.0 FIELD ACTIVITIES Field activities performed by ESP on June 1, 2023, included: • Gauging static water levels in site monitoring wells MW-2R, MW-5R and MW-6R; • Collecting groundwater samples from monitoring wells MW-2R and MW-5R, along with a field duplicate. Although planned, ESP was unable to obtain a water sample from monitoring well MW-6R as the well was considered dry due to insufficient recharge following purging; and • Collecting surface water sample SW-1 from the unnamed intermittent creek along the eastern boundary of the site. Sample locations are depicted on Figure 2. Field logbook entries along with water level survey forms, groundwater sampling forms, and field instrument calibration forms were completed in the field to document site activities (see Appendix C). Photographs are provided in Appendix B. Details of field activities are provided below. 3.1 Water Level Gauging On June 1, 2023, prior to purging or collecting groundwater samples, depth to groundwater from the top of casing (TOC) within each monitoring well was measured and recorded using a decontaminated electronic water level meter. The water level measurements were collected by first removing covers and plunger caps from all site monitoring wells and allowing water within the wells to stabilize. The electronic water level meter probe was then lowered into the well and the depth to water measured relative to the well’s TOC. As noted on Table 1, static water level depths ranged from 7.55 ft to 14.70 ft below top of casing (ft bTOC). Figure 3 depicts the groundwater elevations based off a benchmark of 100.00 ft given to the MW-5R TOC. As depicted on Figure 3, groundwater flow beneath the site is toward the north-northeast. 3.2 Groundwater Sampling On June 1, 2023, groundwater samples were collected from monitoring wells MW-2R and MW-5R. Due to the lack of significant recharge following purging of MW-6R, a sufficient volume Subsequent Monitoring Report ESP Project No. 23-00200-008 Rimtrax Corporation (Incident #7079) July 25, 2023 7 of water was not available for sampling. Less than one bailer of very turbid groundwater was recovered from MW-6R after a 30-minutes pause to the purging process and thus was not suitable for sampling. Groundwater samples were collected using dedicated and disposable polyvinyl chloride (PVC) bailers (1.5” x 3’) attached to braided nylon rope. Prior to groundwater sample collection, each well was purged using the bailer. During purging, water quality parameters including pH, conductivity, temperature, and turbidity were measured using calibrated field water quality instruments. Readings were taken at the start of purging and periodically until a minimum of three well volumes were removed from the well and water quality parameters stabilized. Following purging, a groundwater sample for laboratory analysis was collected from the well using the bailer. The water quality parameters were recorded on groundwater sampling forms along with time, water level depth, and cumulative volume of water purged (see groundwater sampling forms in Appendix C). Groundwater samples were collected following Guidelines for Sampling by the Underground Storage Tank Section, Division of Waste Management, North Carolina Department of Environmental Quality (NCDEQ, 2022). Groundwater samples were placed in laboratory- prepared vials preserved with hydrochloric acid (HCl), labeled, and stored on ice in a cooler for subsequent delivery under standard chain-of-custody (COC) procedures to Pace Analytical (Pace), a North Carolina-certified laboratory, located in Huntersville, North Carolina, for analysis. The groundwater samples were analyzed for VOCs by EPA Method 6200B including MTBE, ethylene dibromide (EDB), and isopropyl ether (IPE). 3.3 Water Supply Well Sampling No water supply wells were sampled as part of this field effort as no active water supply wells are reported to be located within 1,000-feet of the site. The site and vicinity properties are reportedly connected to municipal water. 3.4 Surface Water Sampling On June 1, 2023, a surface water sample (SW-1) was collected from the unnamed intermittent creek that runs along the eastern boundary of the site (see Figure 4). SW-1 was collected from a portion of the creek that was accessed near MW-2R and was the approximate location of previous surface water sampling events. SW-1 was collected by dipping a new unpreserved laboratory bottle into the surface water body. The water was then poured from the unpreserved bottle into the Subsequent Monitoring Report ESP Project No. 23-00200-008 Rimtrax Corporation (Incident #7079) July 25, 2023 8 laboratory provided preserved glass sample vials. A surface water sampling sheet was filled out with water quality parameters measured at the time of sample collection (Appendix C). 3.5 Field Quality Control Sampling and Analysis A field duplicate groundwater sample was collected on June 1, 2023 from MW-5R and analyzed for VOCs by EPA Method 6200B including MTBE, EDB, and IPE to assess variance between collected samples. Subsequent Monitoring Report ESP Project No. 23-00200-008 Rimtrax Corporation (Incident #7079) July 25, 2023 9 4.0 ANALYTICAL RESULTS Results of the laboratory analysis of groundwater samples MW-2R and MW-5R and surface water sample SW-1 are tabulated in Table 2. As noted in Table 2, the analytical results are compared to both 2L standards and GCLs. The Pace laboratory analytical report is provided in Appendix D. No analytes were detected at concentrations exceeding their respective GCLs; however, various analytes were detected at concentrations greater than their respective 2L groundwater standards in the two sampled monitoring wells while no analytes were detected above 2L standards in surface water sample SW-1 (see Table 2 and Figures 4 and 5). A summary of the analytical results is as follows: • MTBE was the only analyte detected above its 2L standard of 20 µg/L in monitoring well MW-2R (238 µg/L); • In monitoring well MW-5R, analytes generally increased in concentrations with benzene (356 µg/L), ethylbenzene (1,220 µg/L), isopropylbenzene (72.9 µg/L), MTBE (102 µg/L), naphthalene (477 µg/L), and n-propylbenzene (292 µg/L) detected above their respective 2Lstandards; and • The only analyte detected in surface water sample SW-1 was ethylbenzene at an estimated concentration of 0.45J µg/L, which is significantly below its 2L standard of 600 µg/L. A comparison of groundwater laboratory analytical results from the June 1, 2023 sampling event to the March 7, 2022 sampling event reveals the following: • MTBE concentrations in MW-2R decreased slightly from the March 7, 2022 sampling event to the June 1, 2023 sampling event. • Benzene and MTBE concentrations in MW-5R both decreased from the March 7, 2022 sampling event to the June 1, 2023 sampling event. • The other analytes detected above 2L standards in MW-5R (i.e., ethylbenzene, naphthalene, cumene, and n-propylbenzene) increased somewhat from the March 7, 2022 event to the June 1, 2023 event. The general trend in groundwater contaminant concentrations at the site has been relatively stable since 2020. Groundwater concentrations have remained above 2L standards; however, no GCLs have been exceeded since 2006. Subsequent Monitoring Report ESP Project No. 23-00200-008 Rimtrax Corporation (Incident #7079) July 25, 2023 10 5.0 CONCLUSIONS AND RECOMMENDATIONS Based on results of the above field activities and previous reporting, ESP concludes the following: • Static water level depths ranged from 7.55 ft to 14.70 ft bTOC. • The general direction of groundwater flow beneath the site is to the north-northeast. • The site and surrounding areas are connected to municipal water provided by Charlotte Water. • No active water supply wells are located within 1,000-feet of the site; • Due to the lack of significant recharge following purging of MW-6R, a sufficient volume of water was not available for sampling. • MTBE was the only analyte detected above its 2L standard of 20 µg/L in monitoring well MW-2R (238 µg/L); • In monitoring well MW-5R, analytes generally increased in concentrations with benzene (356 µg/L), ethylbenzene (1,220 µg/L), isopropylbenzene (72.9 µg/L), MTBE (102 µg/L), naphthalene (477 µg/L), and n-propylbenzene (292 µg/L) detected above their respective 2Lstandards; and • The only analyte detected in surface water sample SW-1 was ethylbenzene at an estimated concentration of 0.45J µg/L, which is significantly below its 2L standard of 600 µg/L. The general trend in groundwater contaminant concentrations at the site has been relatively stable since 2020. Groundwater concentrations have remained above 2L standards; however, no GCLs have been exceeded since 2006. Based on the above results, ESP offers the following recommendations: • Continue to sample site monitoring wells and surface water on a semiannual basis to further understand concentration trends and plume stability; • Use low flow sampling to collect a representative groundwater sample from MW-6R, which is a low producing monitoring well; and • Install oxidation sleeves in monitoring wells MW-2R and MW-5R to attempt to reduce VOC concentrations. Subsequent Monitoring Report ESP Project No. 23-00200-008 Rimtrax Corporation (Incident #7079) July 25, 2023 11 6.0 REFERENCES Mecklenburg County, North Carolina GIS website, https://polaris3g.mecklenburgcountync.gov//. 1985 Geologic Map of North Carolina, The North Carolina Geological Survey, Phillip M. Brown, 1985. Guideline for Sampling Underground Storage Tank Section, Division of Waste Management, North Carolina Division of Environmental Quality, March 7, 2022, Change 4. Terracon, February 10, 2021, State-Lead Monitoring Report: Rimtrax Corporation (Incident #7079), Charlotte, Mecklenburg County, North Carolina. Terracon, January 6, 2022, Letter Report: Rimtrax Corporation (Incident #7079), Charlotte, Mecklenburg County, North Carolina. FIGURES 0 350 700Feet ESP Associates, Inc. P.O. Box 7030Charlotte, NC 28241 Phone 704.583.4949 www.espassociates.com SHEET TITLE PROJECT PROJECT NO. SCALE DRAWN BY CHECKED BY 23-00200-008 ET CWDATE07/10/2023 FIGURE 1USGS TOPOGRAPHIC SITE LOCATION MAPµAs Shown CHARLOTTE, NORTH CAROLINA SITE BOUNDARY All locations are approximate. RIMTRAX CORPORATION LEGEND: CAROLINA CAT GARAGE FORMER UST BASIN < << < < << < < < < << < < <ED < MW-10 MW-15 MW-12 MW-12R MW-6 MW-6R AS-7 MW-2 MW-2R MW-1 MW-4 MW-3 MW-5A MW-3R/MW-9 MW-5 MW-5R ABANDONED WSW-1STATESVILLE ROADREAMS ROADOLD REAMS ROAD W W.T. HARRIS BLVD MW-11 UNNAMED RIVERINE 0 60 120Feet ESP Associates, Inc. P.O. Box 7030Charlotte, NC 28241 Phone 704.583.4949 www.espassociates.com SHEET TITLE PROJECT PROJECT NO. SCALE DRAWN BY CHECKED BY 23-00200-008 ET CWDATE07/10/2023 FIGURE 2SITE MAPµAs Shown CHARLOTTE, NORTH CAROLINA SITE BOUNDARYMONITORING WELLABANDONED MONITORING WELLWATER SUPPLY WELL All locations are approximate. RIMTRAX CORPORATION LEGEND: ED < < NCDEQ Incident No. 7079 Rimtrax Corporation 10701 Reames Rd. Charlotte, North Carolina CAROLINA CAT < <ED < MW-6R MW-2R MW-5R ABANDONED WSW-1STATESVILLE ROADREAMS ROADOLD REAMS ROAD W W.T. HARRIS BLVD UNNAMED RIVERINE 0 60 120Feet ESP Associates, Inc. P.O. Box 7030Charlotte, NC 28241 Phone 704.583.4949 www.espassociates.com SHEET TITLE PROJECT PROJECT NO. SCALE DRAWN BY CHECKED BY 23-00200-008 ET CWDATE07/10/2023 FIGURE 3GROUNDWATER ELEVATION MAPJUNE 1, 2023µAs Shown CHARLOTTE, NORTH CAROLINA SITE BOUNDARYMONITORING WELLWATER SUPPLY WELLESTIMATED GROUNDWATER ELEVATION CONTOURESTIMATED GROUNDWATER FLOW DIRECTION All locations are approximate. RIMTRAX CORPORATION LEGEND: ED < CAROLINA CAT < <ED < MW-6R MW-2R MW-5R ABANDONED WSW-1STATESVILLE ROADREAMS ROADOLD REAMS ROAD W W.T. HARRIS BLVD UNNAMED RIVERINE & SW-1 0 60 120Feet ESP Associates, Inc. P.O. Box 7030Charlotte, NC 28241 Phone 704.583.4949 www.espassociates.com SHEET TITLE PROJECT PROJECT NO. SCALE DRAWN BY CHECKED BY 23-00200-008 ET CWDATE07/10/2023 FIGURE 4GROUNDWATER RESULTS MAPJUNE 1, 2023µAs Shown CHARLOTTE, NORTH CAROLINA SITE BOUNDARYMONITORING WELLABANDONED MONITORING WELLWATER SUPPLY WELLSURFACE WATER SAMPLING LOCATION All locations are approximate. RIMTRAX CORPORATION LEGEND: ED < < & Yellow highlighted values are greater thanthe GCL. Only analytes above 2L Standards or GCLsshown. NS - not sampled NCDEQ Incident No. 7079 Rimtrax Corporation 10701 Reames Rd. Charlotte, North Carolina Results Presented in Table 2. CAROLINA CAT < <ED < MW-6R MW-2R MW-5R ABANDONED WSW-1STATESVILLE ROADREAMS ROADOLD REAMS ROAD W W.T. HARRIS BLVD UNNAMED RIVERINE & SW-1 0 60 120Feet ESP Associates, Inc. P.O. Box 7030Charlotte, NC 28241 Phone 704.583.4949 www.espassociates.com SHEET TITLE PROJECT PROJECT NO. SCALE DRAWN BY CHECKED BY 23-00200-008 ET CWDATE07/10/2023 FIGURE 5BENZENE ISOCONCENTRATION MAPJUNE 1, 2023µAs Shown CHARLOTTE, NORTH CAROLINA SITE BOUNDARYMONITORING WELLWATER SUPPLY WELLSURFACE WATER SAMPLING LOCATIONAPPROXIMATE CONCENTRATION CONTOUR All locations are approximate. RIMTRAX CORPORATION LEGEND: ED < & NCDEQ Incident No. 7079 Rimtrax Corporation 10701 Reames Rd. Charlotte, North Carolina 356 300 ND ND NS NS NS - not sampledResults Presented in Table 2. TABLES Table 1 Monitoring Well Construction and Groundwater Elevation Data Rimtrax Corporation Charlotte, North Carolina NCDEQ Incident No. 7079 Well ID Date Intalled Screened Interval (ft BGS) a Bottom of Well (ft BGS) a Top of Casing Elevation (ft) a,b Date Water Level Measured Depth to Water from Top of Casing (ft bTOC) Groundwater Elevation (ft) 3/31/2021 5.83 88.36 12/6/2021 12.41 81.78 3/7/2022 16.46 77.73 6/1/2023 7.55 86.64 3/31/2021 4.67 95.33 12/6/2021 13.43 86.57 3/7/2022 12.15 87.85 6/1/2023 12.42 87.58 3/31/2021 9.42 84.26 12/6/2021 18.28 75.40 3/7/2022 15.39 78.29 6/1/2023 14.70 78.98 Notes: a Top of casing elevations, screened intervals, and bottom of well measurements are from previous consultants' monitoring reports (see Appendix A). b Top of casing elevations are based off of an assumed benchmark elevation of 100.00 ft given to MW-5R. BGS - below ground surface ft - feet ft bTOC - feet below TOC TOC - top of casing 94.19 100.00 93.6817.42 MW-2R MW-5R MW-6R 8/1/2002 10/9/2019 12/31/2020 8.00-18..00 8.00-18..00 8.00-18..00 18.75 18.54 Table 2 Summary of Groundwater Analytical Results Rimtrax Corporation Charlotte, North Carolina NCDEQ Incident No. 7079 (Page 1 of 1) 1 70 70 70 70 0.02 0.40 70 600 70 20 6 70 600 400 400 500 500 500 5,000 6,900 8,500 70,000 15,000 50 400 70,000 84,500 25,000 20,000 6,000 30,000 260,000 28,500 25,000 85,500 85,500 85,500 3/31/21 <0.69 <0.98 <0.80 <0.71 <0.65 N/A <0.64 18.4 <0.61 <0.67 279 <1.3 <0.68 <0.97 <0.99 <0.66 <1.4 NR NR 12/6/21 <0.86 <1.2 <1.0 <0.88 <0.81 N/A <0.80 18.4 1.3 <0.83 321 2.5J <0.85 2.5 2.3 <0.83 3.9J NR NR 3/7/22 <0.69 <0.98 <0.80 <0.71 <0.65 N/A <0.64 13.9 <0.61 <0.67 242 <1.3 <0.68 <0.97 <0.99 <0.66 <1.4 NR NR 6/1/23 <0.69 <0.98 <0.80 <0.86 <0.65 <0.54 <0.64 15.6 0.96J <0.67 238 <1.3 <0.68 <0.48 <0.99 <0.66 <1.4 <1.4 <0.68 3/31/21 244 <2.4 <2.0 <1.8 <1.6 N/A <1.7 <1.5 964 58.1 30.6 321 207 43.6 128 <1.7 660.9 NR NR 12/6/21 477 19.4 <4.0 <3.5 <3.2 N/A <3.2 <3.1 976 42.9 103 417 145 49.6 12 6 142.7 NR NR 3/7/22 775 <4.9 <4.0 <3.5 <3.2 N/A <3.2 <3.1 1,080 51 168 348 165 72.2 7.8 <3.3 182.4 NR NR 6/1/23 356 <4.9 <0.80 <4.3 <3.2 <2.7 <3.2 <3.1 1,220 72.9 102 477 292 36.0 24.3 19.0 244.2 232 12.2 Field Duplicate (MW-5R)6/1/23 241 <4.9 <4.0 <4.3 <3.2 <2.7 <3.2 <3.1 1,270 72.2 45.7 508 283 38.9 62.5 28.0 373 363 10.0 3/31/21 11.9 <0.49 <0.40 NR NR N/A <0.32 <0.31 <0.30 <0.33 1.3 <0.64 <0.34 <0.48 <0.50 <0.33 0.63 NR NR 12/6/21 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS 3/7/22 1.1 <0.49 <0.40 <0.35 <0.32 N/A <0.32 0.36J <0.30 <0.33 2.4 <0.64 <0.34 <0.48 <0.50 <0.33 <1.05 NR NR 6/1/23 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS 12/30/20 <0.24 <0.35 <0.25 <0.35 <0.25 N/A <0.26 <0.33 <0.24 <0.24 0.75 <0.66 <0.24 <0.23 <0.19 <0.23 <0.44 NR NR 12/6/21 <0.34 1.1 <0.40 <0.35 <0.32 N/A <0.32 <0.31 1.6 0.46J 1.1 2.3 1.1 1 10.7 2.5 8.6 NR NR 3/7/22 <0.34 <0.49 <0.40 <0.35 <0.32 N/A <0.32 <0.31 <0.30 <0.33 0.71 <0.64 <0.34 <0.48 <0.50 <0.33 <0.71 NR NR 6/1/23 <0.34 <0.49 <0.40 <0.43 <0.32 <0.27 <0.32 <0.31 0.45J <0.33 <0.42 <0.64 <0.34 <0.24 <0.50 <0.33 <0.71 <0.71 <0.34 Notes: Bold values indicate constituent concentrations were greater than the 2L Standard. Yellow highlighted values indicate constituent concentrations were greater than the GCL. Samples presented prior to the June 1, 2023 event were obtained from prevous consultants reports. <## - less than the method detection limit µg/L - micrograms per liter 2L Standard - North Carolina 02L standard for groundwater 2B Standard - North Carolina 02B standard for Class C surface water GCL - Gross Contaminant Level J - Estimated concentration above the method detection limit and below the reporting limit. NR - not reported NA -not available NS - not sampled Sample ID Collection Date 1,3,5-TrimethylbenzeneXylene (Total)MW-2R m&p-Xyleneo-Xylene1,2-Dibromoethane (EDB)Diisopropyl ether (IPE)Chloroform1,2-DichloroethaneSW-1 Toluene1,2,4-Trimethylbenzene2L Standard (µg/L)EthylbenzeneIsopropylbenzene (cumene)Methyl Tert-Butyl Ethyl (MTBE)Naphthalenen-PropylbenzeneBenzenen-Butylbenzenesec-Butylbenzenetert-ButylbenzeneMW-6R GCL (µg/L) MW-5R APPENDICES APPENDIX A APPENDIX B APPENDIX C APPENDIX D #=CL# June 09, 2023 LIMS USE: FR - CHRIS WARD LIMS OBJECT ID: 92670269 92670269 Project: Pace Project No.: RE: Chris Ward ESP Associates 3475 Lakemont Boulevard Fort Mill, SC 29708 Rimtrax Corporation Dear Chris Ward: Enclosed are the analytical results for sample(s) received by the laboratory on June 02, 2023. The results relate only to the samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the laboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report. The test results provided in this final report were generated by each of the following laboratories within the Pace Network: • Pace Analytical Services - Charlotte If you have any questions concerning this report, please feel free to contact me. Sincerely, Bonnie Vang bonnie.vang@pacelabs.com Project Manager (704)875-9092 Enclosures cc:Account Payable, ESP Associates REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 1 of 25 #=CP# CERTIFICATIONS Pace Project No.: Project: 92670269 Rimtrax Corporation Pace Analytical Services Charlotte South Carolina Laboratory ID: 99006 9800 Kincey Ave. Ste 100, Huntersville, NC 28078 North Carolina Drinking Water Certification #: 37706 North Carolina Field Services Certification #: 5342 North Carolina Wastewater Certification #: 12 South Carolina Laboratory ID: 99006 South Carolina Certification #: 99006001 South Carolina Drinking Water Cert. #: 99006003 Florida/NELAP Certification #: E87627 Kentucky UST Certification #: 84 Louisiana DoH Drinking Water #: LA029 Virginia/VELAP Certification #: 460221 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 2 of 25 #=SS# SAMPLE SUMMARY Pace Project No.: Project: 92670269 Rimtrax Corporation Lab ID Sample ID Matrix Date Collected Date Received 92670269001 MW-5R Water 06/01/23 11:01 06/02/23 09:13 92670269002 MW-2R Water 06/01/23 12:00 06/02/23 09:13 92670269003 Field Duplicate Water 06/01/23 13:30 06/02/23 09:13 92670269004 SW-1 Water 06/01/23 13:02 06/02/23 09:13 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 3 of 25 #=SA# SAMPLE ANALYTE COUNT Pace Project No.: Project: 92670269 Rimtrax Corporation Lab ID Sample ID Method Analytes Reported LaboratoryAnalysts 92670269001 MW-5R SM 6200B 63 PASI-CSAS 92670269002 MW-2R SM 6200B 63 PASI-CSAS 92670269003 Field Duplicate SM 6200B 63 PASI-CSAS 92670269004 SW-1 SM 6200B 63 PASI-CSAS PASI-C = Pace Analytical Services - Charlotte REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 4 of 25 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92670269 Rimtrax Corporation Sample:MW-5R Lab ID:92670269001 Collected:06/01/23 11:01 Received:06/02/23 09:13 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene 356 ug/L 06/08/23 20:54 71-43-25.0 3.4 10 Bromobenzene ND ug/L 06/08/23 20:54 108-86-15.0 2.9 10 Bromochloromethane ND ug/L 06/08/23 20:54 74-97-55.0 4.7 10 Bromodichloromethane ND ug/L 06/08/23 20:54 75-27-45.0 3.1 10 Bromoform ND ug/L 06/08/23 20:54 75-25-25.0 3.4 10 Bromomethane ND ug/L 06/08/23 20:54 74-83-950.0 16.6 10 n-Butylbenzene ND ug/L 06/08/23 20:54 104-51-85.0 4.9 10 sec-Butylbenzene ND ug/L 06/08/23 20:54 135-98-85.0 4.0 10 tert-Butylbenzene ND ug/L 06/08/23 20:54 98-06-65.0 3.2 10 Carbon tetrachloride ND ug/L 06/08/23 20:54 56-23-55.0 3.3 10 Chlorobenzene ND ug/L 06/08/23 20:54 108-90-75.0 2.8 10 Chloroethane ND ug/L 06/08/23 20:54 75-00-310.0 6.5 10 Chloroform ND ug/L 06/08/23 20:54 67-66-35.0 4.3 10 Chloromethane ND ug/L 06/08/23 20:54 74-87-310.0 5.4 10 2-Chlorotoluene ND ug/L 06/08/23 20:54 95-49-85.0 3.2 10 4-Chlorotoluene ND ug/L 06/08/23 20:54 106-43-45.0 3.2 10 1,2-Dibromo-3-chloropropane ND ug/L 06/08/23 20:54 96-12-810.0 3.4 10 Dibromochloromethane ND ug/L 06/08/23 20:54 124-48-15.0 3.6 10 1,2-Dibromoethane (EDB)ND ug/L 06/08/23 20:54 106-93-45.0 2.7 10 Dibromomethane ND ug/L 06/08/23 20:54 74-95-35.0 3.9 10 1,2-Dichlorobenzene ND ug/L 06/08/23 20:54 95-50-15.0 3.4 10 1,3-Dichlorobenzene ND ug/L 06/08/23 20:54 541-73-15.0 3.4 10 1,4-Dichlorobenzene ND ug/L 06/08/23 20:54 106-46-75.0 3.3 10 Dichlorodifluoromethane ND ug/L 06/08/23 20:54 75-71-8 IH5.0 3.5 10 1,1-Dichloroethane ND ug/L 06/08/23 20:54 75-34-35.0 3.7 10 1,2-Dichloroethane ND ug/L 06/08/23 20:54 107-06-25.0 3.2 10 1,1-Dichloroethene ND ug/L 06/08/23 20:54 75-35-45.0 3.5 10 cis-1,2-Dichloroethene ND ug/L 06/08/23 20:54 156-59-25.0 3.8 10 trans-1,2-Dichloroethene ND ug/L 06/08/23 20:54 156-60-55.0 4.0 10 1,2-Dichloropropane ND ug/L 06/08/23 20:54 78-87-55.0 3.6 10 1,3-Dichloropropane ND ug/L 06/08/23 20:54 142-28-95.0 2.8 10 2,2-Dichloropropane ND ug/L 06/08/23 20:54 594-20-75.0 3.9 10 1,1-Dichloropropene ND ug/L 06/08/23 20:54 563-58-65.0 4.3 10 cis-1,3-Dichloropropene ND ug/L 06/08/23 20:54 10061-01-55.0 3.6 10 trans-1,3-Dichloropropene ND ug/L 06/08/23 20:54 10061-02-65.0 3.6 10 Diisopropyl ether ND ug/L 06/08/23 20:54 108-20-35.0 3.1 10 Ethylbenzene 1220 ug/L 06/08/23 20:54 100-41-45.0 3.0 10 Hexachloro-1,3-butadiene ND ug/L 06/08/23 20:54 87-68-320.0 15.3 10 Isopropylbenzene (Cumene)72.9 ug/L 06/08/23 20:54 98-82-85.0 3.3 10 Methylene Chloride ND ug/L 06/08/23 20:54 75-09-220.0 19.5 10 Methyl-tert-butyl ether 102 ug/L 06/08/23 20:54 1634-04-45.0 4.2 10 Naphthalene 477 ug/L 06/08/23 20:54 91-20-320.0 6.4 10 n-Propylbenzene 292 ug/L 06/08/23 20:54 103-65-15.0 3.4 10 Styrene ND ug/L 06/08/23 20:54 100-42-55.0 2.9 10 1,1,1,2-Tetrachloroethane ND ug/L 06/08/23 20:54 630-20-65.0 3.1 10 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 5 of 25 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92670269 Rimtrax Corporation Sample:MW-5R Lab ID:92670269001 Collected:06/01/23 11:01 Received:06/02/23 09:13 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 06/08/23 20:54 79-34-55.0 2.2 10 Tetrachloroethene ND ug/L 06/08/23 20:54 127-18-45.0 2.9 10 Toluene 36.0 ug/L 06/08/23 20:54 108-88-35.0 2.4 10 1,2,3-Trichlorobenzene ND ug/L 06/08/23 20:54 87-61-620.0 8.1 10 1,2,4-Trichlorobenzene ND ug/L 06/08/23 20:54 120-82-120.0 6.4 10 1,1,1-Trichloroethane ND ug/L 06/08/23 20:54 71-55-65.0 3.3 10 1,1,2-Trichloroethane ND ug/L 06/08/23 20:54 79-00-55.0 3.2 10 Trichloroethene ND ug/L 06/08/23 20:54 79-01-65.0 3.8 10 Trichlorofluoromethane ND ug/L 06/08/23 20:54 75-69-410.0 3.0 10 1,2,3-Trichloropropane ND ug/L 06/08/23 20:54 96-18-45.0 2.6 10 1,2,4-Trimethylbenzene 24.3 ug/L 06/08/23 20:54 95-63-65.0 5.0 10 1,3,5-Trimethylbenzene 19.0 ug/L 06/08/23 20:54 108-67-85.0 3.3 10 Vinyl chloride ND ug/L 06/08/23 20:54 75-01-410.0 3.9 10 m&p-Xylene 232 ug/L 06/08/23 20:54 179601-23-110.0 7.1 10 o-Xylene 12.2 ug/L 06/08/23 20:54 95-47-65.0 3.4 10 Surrogates 1,2-Dichloroethane-d4 (S)110 %06/08/23 20:54 17060-07-070-130 10 4-Bromofluorobenzene (S)100 %06/08/23 20:54 460-00-470-130 10 Toluene-d8 (S)98 %06/08/23 20:54 2037-26-570-130 10 Sample:MW-2R Lab ID:92670269002 Collected:06/01/23 12:00 Received:06/02/23 09:13 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 06/08/23 20:18 71-43-21.0 0.69 2 Bromobenzene ND ug/L 06/08/23 20:18 108-86-11.0 0.58 2 Bromochloromethane ND ug/L 06/08/23 20:18 74-97-51.0 0.94 2 Bromodichloromethane ND ug/L 06/08/23 20:18 75-27-41.0 0.61 2 Bromoform ND ug/L 06/08/23 20:18 75-25-21.0 0.68 2 Bromomethane ND ug/L 06/08/23 20:18 74-83-910.0 3.3 2 n-Butylbenzene ND ug/L 06/08/23 20:18 104-51-81.0 0.98 2 sec-Butylbenzene ND ug/L 06/08/23 20:18 135-98-81.0 0.80 2 tert-Butylbenzene ND ug/L 06/08/23 20:18 98-06-61.0 0.65 2 Carbon tetrachloride ND ug/L 06/08/23 20:18 56-23-51.0 0.67 2 Chlorobenzene ND ug/L 06/08/23 20:18 108-90-71.0 0.57 2 Chloroethane ND ug/L 06/08/23 20:18 75-00-32.0 1.3 2 Chloroform ND ug/L 06/08/23 20:18 67-66-31.0 0.86 2 Chloromethane ND ug/L 06/08/23 20:18 74-87-32.0 1.1 2 2-Chlorotoluene ND ug/L 06/08/23 20:18 95-49-81.0 0.64 2 4-Chlorotoluene ND ug/L 06/08/23 20:18 106-43-41.0 0.65 2 1,2-Dibromo-3-chloropropane ND ug/L 06/08/23 20:18 96-12-82.0 0.68 2 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 6 of 25 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92670269 Rimtrax Corporation Sample:MW-2R Lab ID:92670269002 Collected:06/01/23 12:00 Received:06/02/23 09:13 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Dibromochloromethane ND ug/L 06/08/23 20:18 124-48-11.0 0.72 2 1,2-Dibromoethane (EDB)ND ug/L 06/08/23 20:18 106-93-41.0 0.54 2 Dibromomethane ND ug/L 06/08/23 20:18 74-95-31.0 0.79 2 1,2-Dichlorobenzene ND ug/L 06/08/23 20:18 95-50-11.0 0.68 2 1,3-Dichlorobenzene ND ug/L 06/08/23 20:18 541-73-11.0 0.68 2 1,4-Dichlorobenzene ND ug/L 06/08/23 20:18 106-46-71.0 0.67 2 Dichlorodifluoromethane ND ug/L 06/08/23 20:18 75-71-8 IH1.0 0.69 2 1,1-Dichloroethane ND ug/L 06/08/23 20:18 75-34-31.0 0.73 2 1,2-Dichloroethane ND ug/L 06/08/23 20:18 107-06-21.0 0.64 2 1,1-Dichloroethene ND ug/L 06/08/23 20:18 75-35-41.0 0.70 2 cis-1,2-Dichloroethene ND ug/L 06/08/23 20:18 156-59-21.0 0.77 2 trans-1,2-Dichloroethene ND ug/L 06/08/23 20:18 156-60-51.0 0.79 2 1,2-Dichloropropane ND ug/L 06/08/23 20:18 78-87-51.0 0.71 2 1,3-Dichloropropane ND ug/L 06/08/23 20:18 142-28-91.0 0.57 2 2,2-Dichloropropane ND ug/L 06/08/23 20:18 594-20-71.0 0.78 2 1,1-Dichloropropene ND ug/L 06/08/23 20:18 563-58-61.0 0.85 2 cis-1,3-Dichloropropene ND ug/L 06/08/23 20:18 10061-01-51.0 0.73 2 trans-1,3-Dichloropropene ND ug/L 06/08/23 20:18 10061-02-61.0 0.73 2 Diisopropyl ether 15.6 ug/L 06/08/23 20:18 108-20-31.0 0.62 2 Ethylbenzene 0.96J ug/L 06/08/23 20:18 100-41-41.0 0.61 2 Hexachloro-1,3-butadiene ND ug/L 06/08/23 20:18 87-68-34.0 3.1 2 Isopropylbenzene (Cumene)ND ug/L 06/08/23 20:18 98-82-81.0 0.67 2 Methylene Chloride ND ug/L 06/08/23 20:18 75-09-24.0 3.9 2 Methyl-tert-butyl ether 238 ug/L 06/08/23 20:18 1634-04-41.0 0.84 2 Naphthalene ND ug/L 06/08/23 20:18 91-20-34.0 1.3 2 n-Propylbenzene ND ug/L 06/08/23 20:18 103-65-11.0 0.68 2 Styrene ND ug/L 06/08/23 20:18 100-42-51.0 0.58 2 1,1,1,2-Tetrachloroethane ND ug/L 06/08/23 20:18 630-20-61.0 0.62 2 1,1,2,2-Tetrachloroethane ND ug/L 06/08/23 20:18 79-34-51.0 0.45 2 Tetrachloroethene ND ug/L 06/08/23 20:18 127-18-41.0 0.58 2 Toluene ND ug/L 06/08/23 20:18 108-88-31.0 0.48 2 1,2,3-Trichlorobenzene ND ug/L 06/08/23 20:18 87-61-64.0 1.6 2 1,2,4-Trichlorobenzene ND ug/L 06/08/23 20:18 120-82-14.0 1.3 2 1,1,1-Trichloroethane ND ug/L 06/08/23 20:18 71-55-61.0 0.66 2 1,1,2-Trichloroethane ND ug/L 06/08/23 20:18 79-00-51.0 0.65 2 Trichloroethene ND ug/L 06/08/23 20:18 79-01-61.0 0.77 2 Trichlorofluoromethane ND ug/L 06/08/23 20:18 75-69-42.0 0.60 2 1,2,3-Trichloropropane ND ug/L 06/08/23 20:18 96-18-41.0 0.52 2 1,2,4-Trimethylbenzene ND ug/L 06/08/23 20:18 95-63-61.0 0.99 2 1,3,5-Trimethylbenzene ND ug/L 06/08/23 20:18 108-67-81.0 0.66 2 Vinyl chloride ND ug/L 06/08/23 20:18 75-01-42.0 0.77 2 m&p-Xylene ND ug/L 06/08/23 20:18 179601-23-12.0 1.4 2 o-Xylene ND ug/L 06/08/23 20:18 95-47-61.0 0.68 2 Surrogates 1,2-Dichloroethane-d4 (S)113 %06/08/23 20:18 17060-07-070-130 2 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 7 of 25 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92670269 Rimtrax Corporation Sample:MW-2R Lab ID:92670269002 Collected:06/01/23 12:00 Received:06/02/23 09:13 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Surrogates 4-Bromofluorobenzene (S)99 %06/08/23 20:18 460-00-470-130 2 Toluene-d8 (S)100 %06/08/23 20:18 2037-26-570-130 2 Sample:Field Duplicate Lab ID:92670269003 Collected:06/01/23 13:30 Received:06/02/23 09:13 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene 241 ug/L 06/08/23 21:12 71-43-25.0 3.4 10 Bromobenzene ND ug/L 06/08/23 21:12 108-86-15.0 2.9 10 Bromochloromethane ND ug/L 06/08/23 21:12 74-97-55.0 4.7 10 Bromodichloromethane ND ug/L 06/08/23 21:12 75-27-45.0 3.1 10 Bromoform ND ug/L 06/08/23 21:12 75-25-25.0 3.4 10 Bromomethane ND ug/L 06/08/23 21:12 74-83-950.0 16.6 10 n-Butylbenzene ND ug/L 06/08/23 21:12 104-51-85.0 4.9 10 sec-Butylbenzene ND ug/L 06/08/23 21:12 135-98-85.0 4.0 10 tert-Butylbenzene ND ug/L 06/08/23 21:12 98-06-65.0 3.2 10 Carbon tetrachloride ND ug/L 06/08/23 21:12 56-23-55.0 3.3 10 Chlorobenzene ND ug/L 06/08/23 21:12 108-90-75.0 2.8 10 Chloroethane ND ug/L 06/08/23 21:12 75-00-310.0 6.5 10 Chloroform ND ug/L 06/08/23 21:12 67-66-35.0 4.3 10 Chloromethane ND ug/L 06/08/23 21:12 74-87-310.0 5.4 10 2-Chlorotoluene ND ug/L 06/08/23 21:12 95-49-85.0 3.2 10 4-Chlorotoluene ND ug/L 06/08/23 21:12 106-43-45.0 3.2 10 1,2-Dibromo-3-chloropropane ND ug/L 06/08/23 21:12 96-12-810.0 3.4 10 Dibromochloromethane ND ug/L 06/08/23 21:12 124-48-15.0 3.6 10 1,2-Dibromoethane (EDB)ND ug/L 06/08/23 21:12 106-93-45.0 2.7 10 Dibromomethane ND ug/L 06/08/23 21:12 74-95-35.0 3.9 10 1,2-Dichlorobenzene ND ug/L 06/08/23 21:12 95-50-15.0 3.4 10 1,3-Dichlorobenzene ND ug/L 06/08/23 21:12 541-73-15.0 3.4 10 1,4-Dichlorobenzene ND ug/L 06/08/23 21:12 106-46-75.0 3.3 10 Dichlorodifluoromethane ND ug/L 06/08/23 21:12 75-71-8 IH5.0 3.5 10 1,1-Dichloroethane ND ug/L 06/08/23 21:12 75-34-35.0 3.7 10 1,2-Dichloroethane ND ug/L 06/08/23 21:12 107-06-25.0 3.2 10 1,1-Dichloroethene ND ug/L 06/08/23 21:12 75-35-45.0 3.5 10 cis-1,2-Dichloroethene ND ug/L 06/08/23 21:12 156-59-25.0 3.8 10 trans-1,2-Dichloroethene ND ug/L 06/08/23 21:12 156-60-55.0 4.0 10 1,2-Dichloropropane ND ug/L 06/08/23 21:12 78-87-55.0 3.6 10 1,3-Dichloropropane ND ug/L 06/08/23 21:12 142-28-95.0 2.8 10 2,2-Dichloropropane ND ug/L 06/08/23 21:12 594-20-75.0 3.9 10 1,1-Dichloropropene ND ug/L 06/08/23 21:12 563-58-65.0 4.3 10 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 8 of 25 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92670269 Rimtrax Corporation Sample:Field Duplicate Lab ID:92670269003 Collected:06/01/23 13:30 Received:06/02/23 09:13 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV cis-1,3-Dichloropropene ND ug/L 06/08/23 21:12 10061-01-55.0 3.6 10 trans-1,3-Dichloropropene ND ug/L 06/08/23 21:12 10061-02-65.0 3.6 10 Diisopropyl ether ND ug/L 06/08/23 21:12 108-20-35.0 3.1 10 Ethylbenzene 1270 ug/L 06/08/23 21:12 100-41-45.0 3.0 10 Hexachloro-1,3-butadiene ND ug/L 06/08/23 21:12 87-68-320.0 15.3 10 Isopropylbenzene (Cumene)72.2 ug/L 06/08/23 21:12 98-82-85.0 3.3 10 Methylene Chloride ND ug/L 06/08/23 21:12 75-09-220.0 19.5 10 Methyl-tert-butyl ether 45.7 ug/L 06/08/23 21:12 1634-04-45.0 4.2 10 Naphthalene 508 ug/L 06/08/23 21:12 91-20-320.0 6.4 10 n-Propylbenzene 283 ug/L 06/08/23 21:12 103-65-15.0 3.4 10 Styrene ND ug/L 06/08/23 21:12 100-42-55.0 2.9 10 1,1,1,2-Tetrachloroethane ND ug/L 06/08/23 21:12 630-20-65.0 3.1 10 1,1,2,2-Tetrachloroethane ND ug/L 06/08/23 21:12 79-34-55.0 2.2 10 Tetrachloroethene ND ug/L 06/08/23 21:12 127-18-45.0 2.9 10 Toluene 38.9 ug/L 06/08/23 21:12 108-88-35.0 2.4 10 1,2,3-Trichlorobenzene ND ug/L 06/08/23 21:12 87-61-620.0 8.1 10 1,2,4-Trichlorobenzene ND ug/L 06/08/23 21:12 120-82-120.0 6.4 10 1,1,1-Trichloroethane ND ug/L 06/08/23 21:12 71-55-65.0 3.3 10 1,1,2-Trichloroethane ND ug/L 06/08/23 21:12 79-00-55.0 3.2 10 Trichloroethene ND ug/L 06/08/23 21:12 79-01-65.0 3.8 10 Trichlorofluoromethane ND ug/L 06/08/23 21:12 75-69-410.0 3.0 10 1,2,3-Trichloropropane ND ug/L 06/08/23 21:12 96-18-45.0 2.6 10 1,2,4-Trimethylbenzene 62.5 ug/L 06/08/23 21:12 95-63-65.0 5.0 10 1,3,5-Trimethylbenzene 28.0 ug/L 06/08/23 21:12 108-67-85.0 3.3 10 Vinyl chloride ND ug/L 06/08/23 21:12 75-01-410.0 3.9 10 m&p-Xylene 363 ug/L 06/08/23 21:12 179601-23-110.0 7.1 10 o-Xylene 10.0 ug/L 06/08/23 21:12 95-47-65.0 3.4 10 Surrogates 1,2-Dichloroethane-d4 (S)110 %06/08/23 21:12 17060-07-070-130 10 4-Bromofluorobenzene (S)100 %06/08/23 21:12 460-00-470-130 10 Toluene-d8 (S)99 %06/08/23 21:12 2037-26-570-130 10 Sample:SW-1 Lab ID:92670269004 Collected:06/01/23 13:02 Received:06/02/23 09:13 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 06/09/23 11:25 71-43-20.50 0.34 1 Bromobenzene ND ug/L 06/09/23 11:25 108-86-10.50 0.29 1 Bromochloromethane ND ug/L 06/09/23 11:25 74-97-50.50 0.47 1 Bromodichloromethane ND ug/L 06/09/23 11:25 75-27-40.50 0.31 1 Bromoform ND ug/L 06/09/23 11:25 75-25-20.50 0.34 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 9 of 25 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92670269 Rimtrax Corporation Sample:SW-1 Lab ID:92670269004 Collected:06/01/23 13:02 Received:06/02/23 09:13 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Bromomethane ND ug/L 06/09/23 11:25 74-83-95.0 1.7 1 n-Butylbenzene ND ug/L 06/09/23 11:25 104-51-80.50 0.49 1 sec-Butylbenzene ND ug/L 06/09/23 11:25 135-98-80.50 0.40 1 tert-Butylbenzene ND ug/L 06/09/23 11:25 98-06-60.50 0.32 1 Carbon tetrachloride ND ug/L 06/09/23 11:25 56-23-50.50 0.33 1 Chlorobenzene ND ug/L 06/09/23 11:25 108-90-70.50 0.28 1 Chloroethane ND ug/L 06/09/23 11:25 75-00-31.0 0.65 1 Chloroform ND ug/L 06/09/23 11:25 67-66-30.50 0.43 1 Chloromethane ND ug/L 06/09/23 11:25 74-87-31.0 0.54 1 2-Chlorotoluene ND ug/L 06/09/23 11:25 95-49-80.50 0.32 1 4-Chlorotoluene ND ug/L 06/09/23 11:25 106-43-40.50 0.32 1 1,2-Dibromo-3-chloropropane ND ug/L 06/09/23 11:25 96-12-81.0 0.34 1 Dibromochloromethane ND ug/L 06/09/23 11:25 124-48-10.50 0.36 1 1,2-Dibromoethane (EDB)ND ug/L 06/09/23 11:25 106-93-40.50 0.27 1 Dibromomethane ND ug/L 06/09/23 11:25 74-95-30.50 0.39 1 1,2-Dichlorobenzene ND ug/L 06/09/23 11:25 95-50-10.50 0.34 1 1,3-Dichlorobenzene ND ug/L 06/09/23 11:25 541-73-10.50 0.34 1 1,4-Dichlorobenzene ND ug/L 06/09/23 11:25 106-46-70.50 0.33 1 Dichlorodifluoromethane ND ug/L 06/09/23 11:25 75-71-8 IH0.50 0.35 1 1,1-Dichloroethane ND ug/L 06/09/23 11:25 75-34-30.50 0.37 1 1,2-Dichloroethane ND ug/L 06/09/23 11:25 107-06-20.50 0.32 1 1,1-Dichloroethene ND ug/L 06/09/23 11:25 75-35-40.50 0.35 1 cis-1,2-Dichloroethene ND ug/L 06/09/23 11:25 156-59-20.50 0.38 1 trans-1,2-Dichloroethene ND ug/L 06/09/23 11:25 156-60-50.50 0.40 1 1,2-Dichloropropane ND ug/L 06/09/23 11:25 78-87-50.50 0.36 1 1,3-Dichloropropane ND ug/L 06/09/23 11:25 142-28-90.50 0.28 1 2,2-Dichloropropane ND ug/L 06/09/23 11:25 594-20-70.50 0.39 1 1,1-Dichloropropene ND ug/L 06/09/23 11:25 563-58-60.50 0.43 1 cis-1,3-Dichloropropene ND ug/L 06/09/23 11:25 10061-01-50.50 0.36 1 trans-1,3-Dichloropropene ND ug/L 06/09/23 11:25 10061-02-60.50 0.36 1 Diisopropyl ether ND ug/L 06/09/23 11:25 108-20-30.50 0.31 1 Ethylbenzene 0.45J ug/L 06/09/23 11:25 100-41-40.50 0.30 1 Hexachloro-1,3-butadiene ND ug/L 06/09/23 11:25 87-68-32.0 1.5 1 Isopropylbenzene (Cumene)ND ug/L 06/09/23 11:25 98-82-80.50 0.33 1 Methylene Chloride ND ug/L 06/09/23 11:25 75-09-22.0 2.0 1 Methyl-tert-butyl ether ND ug/L 06/09/23 11:25 1634-04-40.50 0.42 1 Naphthalene ND ug/L 06/09/23 11:25 91-20-32.0 0.64 1 n-Propylbenzene ND ug/L 06/09/23 11:25 103-65-10.50 0.34 1 Styrene ND ug/L 06/09/23 11:25 100-42-50.50 0.29 1 1,1,1,2-Tetrachloroethane ND ug/L 06/09/23 11:25 630-20-60.50 0.31 1 1,1,2,2-Tetrachloroethane ND ug/L 06/09/23 11:25 79-34-50.50 0.22 1 Tetrachloroethene ND ug/L 06/09/23 11:25 127-18-40.50 0.29 1 Toluene ND ug/L 06/09/23 11:25 108-88-30.50 0.24 1 1,2,3-Trichlorobenzene ND ug/L 06/09/23 11:25 87-61-62.0 0.81 1 1,2,4-Trichlorobenzene ND ug/L 06/09/23 11:25 120-82-12.0 0.64 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 10 of 25 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92670269 Rimtrax Corporation Sample:SW-1 Lab ID:92670269004 Collected:06/01/23 13:02 Received:06/02/23 09:13 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,1-Trichloroethane ND ug/L 06/09/23 11:25 71-55-60.50 0.33 1 1,1,2-Trichloroethane ND ug/L 06/09/23 11:25 79-00-50.50 0.32 1 Trichloroethene ND ug/L 06/09/23 11:25 79-01-60.50 0.38 1 Trichlorofluoromethane ND ug/L 06/09/23 11:25 75-69-41.0 0.30 1 1,2,3-Trichloropropane ND ug/L 06/09/23 11:25 96-18-40.50 0.26 1 1,2,4-Trimethylbenzene ND ug/L 06/09/23 11:25 95-63-60.50 0.50 1 1,3,5-Trimethylbenzene ND ug/L 06/09/23 11:25 108-67-80.50 0.33 1 Vinyl chloride ND ug/L 06/09/23 11:25 75-01-41.0 0.39 1 m&p-Xylene ND ug/L 06/09/23 11:25 179601-23-11.0 0.71 1 o-Xylene ND ug/L 06/09/23 11:25 95-47-60.50 0.34 1 Surrogates 1,2-Dichloroethane-d4 (S)113 %06/09/23 11:25 17060-07-070-130 1 4-Bromofluorobenzene (S)97 %06/09/23 11:25 460-00-470-130 1 Toluene-d8 (S)101 %06/09/23 11:25 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 11 of 25 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92670269 Rimtrax Corporation Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 779336 SM 6200B SM 6200B 6200B MSV Laboratory:Pace Analytical Services - Charlotte Associated Lab Samples:92670269001, 92670269002, 92670269003 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:4042630 Associated Lab Samples:92670269001, 92670269002, 92670269003 Matrix:Water AnalyzedMDL 1,1,1,2-Tetrachloroethane ug/L ND 0.50 06/08/23 15:020.31 1,1,1-Trichloroethane ug/L ND 0.50 06/08/23 15:020.33 1,1,2,2-Tetrachloroethane ug/L ND 0.50 06/08/23 15:020.22 1,1,2-Trichloroethane ug/L ND 0.50 06/08/23 15:020.32 1,1-Dichloroethane ug/L ND 0.50 06/08/23 15:020.37 1,1-Dichloroethene ug/L ND 0.50 06/08/23 15:020.35 1,1-Dichloropropene ug/L ND 0.50 06/08/23 15:020.43 1,2,3-Trichlorobenzene ug/L ND 2.0 06/08/23 15:020.81 1,2,3-Trichloropropane ug/L ND 0.50 06/08/23 15:020.26 1,2,4-Trichlorobenzene ug/L ND 2.0 06/08/23 15:020.64 1,2,4-Trimethylbenzene ug/L ND 0.50 06/08/23 15:020.50 1,2-Dibromo-3-chloropropane ug/L ND 1.0 06/08/23 15:020.34 1,2-Dibromoethane (EDB)ug/L ND 0.50 06/08/23 15:020.27 1,2-Dichlorobenzene ug/L ND 0.50 06/08/23 15:020.34 1,2-Dichloroethane ug/L ND 0.50 06/08/23 15:020.32 1,2-Dichloropropane ug/L ND 0.50 06/08/23 15:020.36 1,3,5-Trimethylbenzene ug/L ND 0.50 06/08/23 15:020.33 1,3-Dichlorobenzene ug/L ND 0.50 06/08/23 15:020.34 1,3-Dichloropropane ug/L ND 0.50 06/08/23 15:020.28 1,4-Dichlorobenzene ug/L ND 0.50 06/08/23 15:020.33 2,2-Dichloropropane ug/L ND 0.50 06/08/23 15:020.39 2-Chlorotoluene ug/L ND 0.50 06/08/23 15:020.32 4-Chlorotoluene ug/L ND 0.50 06/08/23 15:020.32 Benzene ug/L ND 0.50 06/08/23 15:020.34 Bromobenzene ug/L ND 0.50 06/08/23 15:020.29 Bromochloromethane ug/L ND 0.50 06/08/23 15:020.47 Bromodichloromethane ug/L ND 0.50 06/08/23 15:020.31 Bromoform ug/L ND 0.50 06/08/23 15:020.34 Bromomethane ug/L ND 5.0 06/08/23 15:021.7 Carbon tetrachloride ug/L ND 0.50 06/08/23 15:020.33 Chlorobenzene ug/L ND 0.50 06/08/23 15:020.28 Chloroethane ug/L ND 1.0 06/08/23 15:020.65 Chloroform ug/L ND 0.50 06/08/23 15:020.43 Chloromethane ug/L ND 1.0 06/08/23 15:020.54 cis-1,2-Dichloroethene ug/L ND 0.50 06/08/23 15:020.38 cis-1,3-Dichloropropene ug/L ND 0.50 06/08/23 15:020.36 Dibromochloromethane ug/L ND 0.50 06/08/23 15:020.36 Dibromomethane ug/L ND 0.50 06/08/23 15:020.39 Dichlorodifluoromethane ug/L ND 0.50 IH06/08/23 15:020.35 Diisopropyl ether ug/L ND 0.50 06/08/23 15:020.31 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 12 of 25 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92670269 Rimtrax Corporation Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:4042630 Associated Lab Samples:92670269001, 92670269002, 92670269003 Matrix:Water AnalyzedMDL Ethylbenzene ug/L ND 0.50 06/08/23 15:020.30 Hexachloro-1,3-butadiene ug/L ND 2.0 06/08/23 15:021.5 Isopropylbenzene (Cumene)ug/L ND 0.50 06/08/23 15:020.33 m&p-Xylene ug/L ND 1.0 06/08/23 15:020.71 Methyl-tert-butyl ether ug/L ND 0.50 06/08/23 15:020.42 Methylene Chloride ug/L ND 2.0 06/08/23 15:022.0 n-Butylbenzene ug/L ND 0.50 06/08/23 15:020.49 n-Propylbenzene ug/L ND 0.50 06/08/23 15:020.34 Naphthalene ug/L ND 2.0 06/08/23 15:020.64 o-Xylene ug/L ND 0.50 06/08/23 15:020.34 sec-Butylbenzene ug/L ND 0.50 06/08/23 15:020.40 Styrene ug/L ND 0.50 06/08/23 15:020.29 tert-Butylbenzene ug/L ND 0.50 06/08/23 15:020.32 Tetrachloroethene ug/L ND 0.50 06/08/23 15:020.29 Toluene ug/L ND 0.50 06/08/23 15:020.24 trans-1,2-Dichloroethene ug/L ND 0.50 06/08/23 15:020.40 trans-1,3-Dichloropropene ug/L ND 0.50 06/08/23 15:020.36 Trichloroethene ug/L ND 0.50 06/08/23 15:020.38 Trichlorofluoromethane ug/L ND 1.0 06/08/23 15:020.30 Vinyl chloride ug/L ND 1.0 06/08/23 15:020.39 1,2-Dichloroethane-d4 (S)%109 70-130 06/08/23 15:02 4-Bromofluorobenzene (S)%99 70-130 06/08/23 15:02 Toluene-d8 (S)%99 70-130 06/08/23 15:02 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4042631LABORATORY CONTROL SAMPLE: LCSSpike 1,1,1,2-Tetrachloroethane ug/L 17.020 85 60-140 1,1,1-Trichloroethane ug/L 17.720 89 60-140 1,1,2,2-Tetrachloroethane ug/L 17.620 88 60-140 1,1,2-Trichloroethane ug/L 17.820 89 60-140 1,1-Dichloroethane ug/L 18.120 90 60-140 1,1-Dichloroethene ug/L 19.220 96 60-140 1,1-Dichloropropene ug/L 19.220 96 60-140 1,2,3-Trichlorobenzene ug/L 19.320 97 60-140 1,2,3-Trichloropropane ug/L 17.720 88 60-140 1,2,4-Trichlorobenzene ug/L 18.920 94 60-140 1,2,4-Trimethylbenzene ug/L 18.820 94 60-140 1,2-Dibromo-3-chloropropane ug/L 17.020 85 60-140 1,2-Dibromoethane (EDB)ug/L 18.620 93 60-140 1,2-Dichlorobenzene ug/L 18.120 91 60-140 1,2-Dichloroethane ug/L 18.720 93 60-140 1,2-Dichloropropane ug/L 18.020 90 60-140 1,3,5-Trimethylbenzene ug/L 18.720 93 60-140 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 13 of 25 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92670269 Rimtrax Corporation Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4042631LABORATORY CONTROL SAMPLE: LCSSpike 1,3-Dichlorobenzene ug/L 17.820 89 60-140 1,3-Dichloropropane ug/L 17.720 88 60-140 1,4-Dichlorobenzene ug/L 17.720 88 60-140 2,2-Dichloropropane ug/L 18.220 91 60-140 2-Chlorotoluene ug/L 17.620 88 60-140 4-Chlorotoluene ug/L 18.420 92 60-140 Benzene ug/L 17.320 87 60-140 Bromobenzene ug/L 17.220 86 60-140 Bromochloromethane ug/L 17.620 88 60-140 Bromodichloromethane ug/L 16.920 84 60-140 Bromoform ug/L 15.020 75 60-140 Bromomethane ug/L 12.420 62 60-140 Carbon tetrachloride ug/L 17.020 85 60-140 Chlorobenzene ug/L 17.220 86 60-140 Chloroethane ug/L 17.520 88 60-140 Chloroform ug/L 17.220 86 60-140 Chloromethane ug/L 17.120 86 60-140 cis-1,2-Dichloroethene ug/L 18.520 92 60-140 cis-1,3-Dichloropropene ug/L 17.820 89 60-140 Dibromochloromethane ug/L 16.720 84 60-140 Dibromomethane ug/L 18.020 90 60-140 Dichlorodifluoromethane ug/L 23.3 IH2011760-140 Diisopropyl ether ug/L 18.320 91 60-140 Ethylbenzene ug/L 16.920 84 60-140 Hexachloro-1,3-butadiene ug/L 18.420 92 60-140 Isopropylbenzene (Cumene)ug/L 17.820 89 60-140 m&p-Xylene ug/L 34.840 87 60-140 Methyl-tert-butyl ether ug/L 17.920 89 60-140 Methylene Chloride ug/L 17.420 87 60-140 n-Butylbenzene ug/L 19.520 98 60-140 n-Propylbenzene ug/L 17.720 89 60-140 Naphthalene ug/L 20.820 104 60-140 o-Xylene ug/L 17.720 88 60-140 sec-Butylbenzene ug/L 18.420 92 60-140 Styrene ug/L 18.520 92 60-140 tert-Butylbenzene ug/L 14.820 74 60-140 Tetrachloroethene ug/L 16.020 80 60-140 Toluene ug/L 16.420 82 60-140 trans-1,2-Dichloroethene ug/L 19.020 95 60-140 trans-1,3-Dichloropropene ug/L 17.420 87 60-140 Trichloroethene ug/L 17.420 87 60-140 Trichlorofluoromethane ug/L 17.820 89 60-140 Vinyl chloride ug/L 16.020 80 60-140 1,2-Dichloroethane-d4 (S)%105 70-130 4-Bromofluorobenzene (S)%100 70-130 Toluene-d8 (S)%99 70-130 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 14 of 25 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92670269 Rimtrax Corporation Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units MS Result % Rec Limits Qual% RecConc. 4042632MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92670482001 4042633 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. 1,1,1,2-Tetrachloroethane ug/L 20 131 60-140131 0 3020ND26.2 26.2 1,1,1-Trichloroethane ug/L M12014760-140145 1 3020ND29.4 28.9 1,1,2,2-Tetrachloroethane ug/L 20 133 60-140135 1 3020ND26.6 26.9 1,1,2-Trichloroethane ug/L 20 132 60-140131 0 3020ND26.3 26.2 1,1-Dichloroethane ug/L M12014860-140146 1 3020ND29.6 29.2 1,1-Dichloroethene ug/L M12016460-140160 2 3020ND32.8 32.0 1,1-Dichloropropene ug/L M12015760-140156 1 3020ND31.4 31.3 1,2,3-Trichlorobenzene ug/L 20 118 60-140123 4 3020ND23.5 24.5 1,2,3-Trichloropropane ug/L 20 131 60-140128 2 3020ND26.2 25.6 1,2,4-Trichlorobenzene ug/L 20 117 60-140121 4 3020ND23.3 24.2 1,2,4-Trimethylbenzene ug/L 20 136 60-140139 2 3020ND27.1 27.8 1,2-Dibromo-3- chloropropane ug/L 20 118 60-140123 4 3020ND23.7 24.6 1,2-Dibromoethane (EDB)ug/L 20 137 60-140138 1 3020ND27.3 27.7 1,2-Dichlorobenzene ug/L 20 126 60-140132 4 3020ND25.2 26.3 1,2-Dichloroethane ug/L M12014760-140145 1 3020ND29.4 28.9 1,2-Dichloropropane ug/L M12014460-140142 1 3020ND28.8 28.4 1,3,5-Trimethylbenzene ug/L 20 133 60-140136 3 3020ND26.5 27.2 1,3-Dichlorobenzene ug/L 20 127 60-140128 1 3020ND25.3 25.5 1,3-Dichloropropane ug/L 20 135 60-140134 0 3020ND26.9 26.8 1,4-Dichlorobenzene ug/L 20 122 60-140124 2 3020ND24.3 24.9 2,2-Dichloropropane ug/L 20 136 60-140134 1 3020ND27.2 26.9 2-Chlorotoluene ug/L 20 131 60-140134 2 3020ND26.3 26.9 4-Chlorotoluene ug/L 20 133 60-140136 2 3020ND26.7 27.1 Benzene ug/L 20 137 60-140137 0 3020ND27.3 27.3 Bromobenzene ug/L 20 124 60-140126 2 3020ND24.9 25.3 Bromochloromethane ug/L 20 133 60-140133 0 3020ND26.6 26.6 Bromodichloromethane ug/L 20 132 60-140130 2 3020ND26.4 26.0 Bromoform ug/L 20 112 60-140111 1 3020ND22.3 22.1 Bromomethane ug/L 20 117 60-140119 1 3020ND23.5 23.8 Carbon tetrachloride ug/L 20 138 60-140139 1 3020ND27.6 27.7 Chlorobenzene ug/L 20 128 60-140130 1 3020ND25.7 26.0 Chloroethane ug/L M12014560-140146 0 3020ND29.1 29.1 Chloroform ug/L 20 140 60-140137 2 3020ND28.0 27.4 Chloromethane ug/L 20 131 60-140138 5 3020ND26.2 27.6 cis-1,2-Dichloroethene ug/L M12014960-140148 1 3020ND29.8 29.5 cis-1,3-Dichloropropene ug/L 20 131 60-140129 2 3020ND26.2 25.8 Dibromochloromethane ug/L 20 132 60-140131 0 3020ND26.3 26.2 Dibromomethane ug/L 20 131 60-140130 1 3020ND26.1 25.9 Dichlorodifluoromethane ug/L IH,M12019660-140194 1 3020ND39.2 38.9 Diisopropyl ether ug/L M12014860-140146 1 3020ND29.5 29.2 Ethylbenzene ug/L 20 132 60-140132 0 3020ND26.5 26.5 Hexachloro-1,3-butadiene ug/L 20 122 60-140120 2 3020ND24.5 24.0 Isopropylbenzene(Cumene)ug/L 20 136 60-140136 1 3020ND27.1 27.3 m&p-Xylene ug/L 40 134 60-140133 1 3040ND53.6 53.1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 15 of 25 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92670269 Rimtrax Corporation Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units MS Result % Rec Limits Qual% RecConc. 4042632MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92670482001 4042633 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Methyl-tert-butyl ether ug/L 20 136 60-140134 1 3020ND27.3 26.9 Methylene Chloride ug/L 20 140 60-140140 1 3020ND28.1 27.9 n-Butylbenzene ug/L 20 138 60-140137 1 3020ND27.6 27.4 n-Propylbenzene ug/L 20 131 60-140133 2 3020ND26.2 26.7 Naphthalene ug/L 20 128 60-140139 9 3020ND25.5 27.8 o-Xylene ug/L 20 130 60-140133 2 3020ND26.1 26.6 sec-Butylbenzene ug/L 20 134 60-140136 2 3020ND26.7 27.1 Styrene ug/L 20 139 60-140138 1 3020ND27.8 27.6 tert-Butylbenzene ug/L 20 108 60-140111 2 3020ND21.7 22.2 Tetrachloroethene ug/L 20 123 60-140122 1 3020ND24.6 24.4 Toluene ug/L 20 128 60-140128 0 3020ND25.7 25.6 trans-1,2-Dichloroethene ug/L M12015460-140152 1 3020ND30.8 30.5 trans-1,3-Dichloropropene ug/L 20 132 60-140130 2 3020ND26.5 26.0 Trichloroethene ug/L 20 130 60-140131 0 3020ND26.0 26.2 Trichlorofluoromethane ug/L M12015260-140150 1 3020ND30.4 29.9 Vinyl chloride ug/L 20 132 60-140134 1 3020ND26.5 26.7 1,2-Dichloroethane-d4 (S)%113 70-130111 4-Bromofluorobenzene (S)%102 70-130102 Toluene-d8 (S)%99 70-13098 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 16 of 25 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92670269 Rimtrax Corporation Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 779435 SM 6200B SM 6200B 6200B MSV Laboratory:Pace Analytical Services - Charlotte Associated Lab Samples:92670269004 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:4043381 Associated Lab Samples:92670269004 Matrix:Water AnalyzedMDL 1,1,1,2-Tetrachloroethane ug/L ND 0.50 06/09/23 07:490.31 1,1,1-Trichloroethane ug/L ND 0.50 06/09/23 07:490.33 1,1,2,2-Tetrachloroethane ug/L ND 0.50 06/09/23 07:490.22 1,1,2-Trichloroethane ug/L ND 0.50 06/09/23 07:490.32 1,1-Dichloroethane ug/L ND 0.50 06/09/23 07:490.37 1,1-Dichloroethene ug/L ND 0.50 06/09/23 07:490.35 1,1-Dichloropropene ug/L ND 0.50 06/09/23 07:490.43 1,2,3-Trichlorobenzene ug/L ND 2.0 06/09/23 07:490.81 1,2,3-Trichloropropane ug/L ND 0.50 06/09/23 07:490.26 1,2,4-Trichlorobenzene ug/L ND 2.0 06/09/23 07:490.64 1,2,4-Trimethylbenzene ug/L ND 0.50 06/09/23 07:490.50 1,2-Dibromo-3-chloropropane ug/L ND 1.0 06/09/23 07:490.34 1,2-Dibromoethane (EDB)ug/L ND 0.50 06/09/23 07:490.27 1,2-Dichlorobenzene ug/L ND 0.50 06/09/23 07:490.34 1,2-Dichloroethane ug/L ND 0.50 06/09/23 07:490.32 1,2-Dichloropropane ug/L ND 0.50 06/09/23 07:490.36 1,3,5-Trimethylbenzene ug/L ND 0.50 06/09/23 07:490.33 1,3-Dichlorobenzene ug/L ND 0.50 06/09/23 07:490.34 1,3-Dichloropropane ug/L ND 0.50 06/09/23 07:490.28 1,4-Dichlorobenzene ug/L ND 0.50 06/09/23 07:490.33 2,2-Dichloropropane ug/L ND 0.50 06/09/23 07:490.39 2-Chlorotoluene ug/L ND 0.50 06/09/23 07:490.32 4-Chlorotoluene ug/L ND 0.50 06/09/23 07:490.32 Benzene ug/L ND 0.50 06/09/23 07:490.34 Bromobenzene ug/L ND 0.50 06/09/23 07:490.29 Bromochloromethane ug/L ND 0.50 06/09/23 07:490.47 Bromodichloromethane ug/L ND 0.50 06/09/23 07:490.31 Bromoform ug/L ND 0.50 06/09/23 07:490.34 Bromomethane ug/L ND 5.0 06/09/23 07:491.7 Carbon tetrachloride ug/L ND 0.50 06/09/23 07:490.33 Chlorobenzene ug/L ND 0.50 06/09/23 07:490.28 Chloroethane ug/L ND 1.0 06/09/23 07:490.65 Chloroform ug/L ND 0.50 06/09/23 07:490.43 Chloromethane ug/L ND 1.0 06/09/23 07:490.54 cis-1,2-Dichloroethene ug/L ND 0.50 06/09/23 07:490.38 cis-1,3-Dichloropropene ug/L ND 0.50 06/09/23 07:490.36 Dibromochloromethane ug/L ND 0.50 06/09/23 07:490.36 Dibromomethane ug/L ND 0.50 06/09/23 07:490.39 Dichlorodifluoromethane ug/L ND 0.50 IH06/09/23 07:490.35 Diisopropyl ether ug/L ND 0.50 06/09/23 07:490.31 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 17 of 25 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92670269 Rimtrax Corporation Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:4043381 Associated Lab Samples:92670269004 Matrix:Water AnalyzedMDL Ethylbenzene ug/L ND 0.50 06/09/23 07:490.30 Hexachloro-1,3-butadiene ug/L ND 2.0 06/09/23 07:491.5 Isopropylbenzene (Cumene)ug/L ND 0.50 06/09/23 07:490.33 m&p-Xylene ug/L ND 1.0 06/09/23 07:490.71 Methyl-tert-butyl ether ug/L ND 0.50 06/09/23 07:490.42 Methylene Chloride ug/L ND 2.0 06/09/23 07:492.0 n-Butylbenzene ug/L ND 0.50 06/09/23 07:490.49 n-Propylbenzene ug/L ND 0.50 06/09/23 07:490.34 Naphthalene ug/L ND 2.0 06/09/23 07:490.64 o-Xylene ug/L ND 0.50 06/09/23 07:490.34 sec-Butylbenzene ug/L ND 0.50 06/09/23 07:490.40 Styrene ug/L ND 0.50 06/09/23 07:490.29 tert-Butylbenzene ug/L ND 0.50 06/09/23 07:490.32 Tetrachloroethene ug/L ND 0.50 06/09/23 07:490.29 Toluene ug/L ND 0.50 06/09/23 07:490.24 trans-1,2-Dichloroethene ug/L ND 0.50 06/09/23 07:490.40 trans-1,3-Dichloropropene ug/L ND 0.50 06/09/23 07:490.36 Trichloroethene ug/L ND 0.50 06/09/23 07:490.38 Trichlorofluoromethane ug/L ND 1.0 06/09/23 07:490.30 Vinyl chloride ug/L ND 1.0 06/09/23 07:490.39 1,2-Dichloroethane-d4 (S)%113 70-130 06/09/23 07:49 4-Bromofluorobenzene (S)%99 70-130 06/09/23 07:49 Toluene-d8 (S)%102 70-130 06/09/23 07:49 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4043382LABORATORY CONTROL SAMPLE: LCSSpike 1,1,1,2-Tetrachloroethane ug/L 17.520 87 60-140 1,1,1-Trichloroethane ug/L 18.720 94 60-140 1,1,2,2-Tetrachloroethane ug/L 18.020 90 60-140 1,1,2-Trichloroethane ug/L 18.420 92 60-140 1,1-Dichloroethane ug/L 19.420 97 60-140 1,1-Dichloroethene ug/L 21.020 105 60-140 1,1-Dichloropropene ug/L 20.220 101 60-140 1,2,3-Trichlorobenzene ug/L 16.820 84 60-140 1,2,3-Trichloropropane ug/L 18.220 91 60-140 1,2,4-Trichlorobenzene ug/L 16.620 83 60-140 1,2,4-Trimethylbenzene ug/L 18.620 93 60-140 1,2-Dibromo-3-chloropropane ug/L 16.520 82 60-140 1,2-Dibromoethane (EDB)ug/L 18.320 91 60-140 1,2-Dichlorobenzene ug/L 17.920 89 60-140 1,2-Dichloroethane ug/L 19.920 99 60-140 1,2-Dichloropropane ug/L 19.420 97 60-140 1,3,5-Trimethylbenzene ug/L 18.220 91 60-140 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 18 of 25 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92670269 Rimtrax Corporation Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4043382LABORATORY CONTROL SAMPLE: LCSSpike 1,3-Dichlorobenzene ug/L 17.320 86 60-140 1,3-Dichloropropane ug/L 18.020 90 60-140 1,4-Dichlorobenzene ug/L 17.120 85 60-140 2,2-Dichloropropane ug/L 16.220 81 60-140 2-Chlorotoluene ug/L 17.620 88 60-140 4-Chlorotoluene ug/L 18.420 92 60-140 Benzene ug/L 18.420 92 60-140 Bromobenzene ug/L 17.120 86 60-140 Bromochloromethane ug/L 17.620 88 60-140 Bromodichloromethane ug/L 17.620 88 60-140 Bromoform ug/L 15.720 78 60-140 Bromomethane ug/L 17.220 86 60-140 Carbon tetrachloride ug/L 17.920 89 60-140 Chlorobenzene ug/L 17.620 88 60-140 Chloroethane ug/L 19.720 98 60-140 Chloroform ug/L 18.020 90 60-140 Chloromethane ug/L 20.420 102 60-140 cis-1,2-Dichloroethene ug/L 19.620 98 60-140 cis-1,3-Dichloropropene ug/L 18.020 90 60-140 Dibromochloromethane ug/L 17.620 88 60-140 Dibromomethane ug/L 18.220 91 60-140 Dichlorodifluoromethane ug/L 25.5 IH2012860-140 Diisopropyl ether ug/L 19.720 99 60-140 Ethylbenzene ug/L 17.620 88 60-140 Hexachloro-1,3-butadiene ug/L 15.520 77 60-140 Isopropylbenzene (Cumene)ug/L 18.020 90 60-140 m&p-Xylene ug/L 35.740 89 60-140 Methyl-tert-butyl ether ug/L 18.620 93 60-140 Methylene Chloride ug/L 19.720 98 60-140 n-Butylbenzene ug/L 17.620 88 60-140 n-Propylbenzene ug/L 17.620 88 60-140 Naphthalene ug/L 18.820 94 60-140 o-Xylene ug/L 17.720 88 60-140 sec-Butylbenzene ug/L 17.720 88 60-140 Styrene ug/L 18.820 94 60-140 tert-Butylbenzene ug/L 14.520 73 60-140 Tetrachloroethene ug/L 16.020 80 60-140 Toluene ug/L 17.420 87 60-140 trans-1,2-Dichloroethene ug/L 20.220 101 60-140 trans-1,3-Dichloropropene ug/L 17.820 89 60-140 Trichloroethene ug/L 17.620 88 60-140 Trichlorofluoromethane ug/L 19.120 95 60-140 Vinyl chloride ug/L 18.020 90 60-140 1,2-Dichloroethane-d4 (S)%109 70-130 4-Bromofluorobenzene (S)%102 70-130 Toluene-d8 (S)%100 70-130 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 19 of 25 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92670269 Rimtrax Corporation Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units MS Result % Rec Limits Qual% RecConc. 4043383MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92670246024 4043384 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. 1,1,1,2-Tetrachloroethane ug/L 20 119 60-140114 4 3020ND23.8 22.9 1,1,1-Trichloroethane ug/L 20 131 60-140127 3 3020ND26.2 25.3 1,1,2,2-Tetrachloroethane ug/L 20 118 60-140114 4 3020ND23.7 22.8 1,1,2-Trichloroethane ug/L 20 118 60-140113 4 3020ND23.7 22.7 1,1-Dichloroethane ug/L 20 132 60-140126 4 3020ND26.4 25.3 1,1-Dichloroethene ug/L M12014660-140141 3 3020ND29.2 28.3 1,1-Dichloropropene ug/L M12014460-140142 2 3020ND28.8 28.3 1,2,3-Trichlorobenzene ug/L 20 108 60-140117 8 3020ND21.6 23.5 1,2,3-Trichloropropane ug/L 20 112 60-140113 1 3020ND22.4 22.6 1,2,4-Trichlorobenzene ug/L 20 107 60-140115 7 3020ND21.5 23.0 1,2,4-Trimethylbenzene ug/L 20 123 60-140126 2 3020ND24.7 25.2 1,2-Dibromo-3- chloropropane ug/L 20 104 60-140109 4 3020ND20.9 21.7 1,2-Dibromoethane (EDB)ug/L 20 122 60-140118 4 3020ND24.4 23.6 1,2-Dichlorobenzene ug/L 20 115 60-140115 0 3020ND23.0 23.0 1,2-Dichloroethane ug/L 20 132 60-140124 6 3020ND26.4 24.9 1,2-Dichloropropane ug/L 20 127 60-140123 3 3020ND25.4 24.6 1,3,5-Trimethylbenzene ug/L 20 122 60-140123 1 3020ND24.4 24.6 1,3-Dichlorobenzene ug/L 20 114 60-140117 2 3020ND22.9 23.4 1,3-Dichloropropane ug/L 20 120 60-140116 3 3020ND23.9 23.2 1,4-Dichlorobenzene ug/L 20 111 60-140113 2 3020ND22.2 22.6 2,2-Dichloropropane ug/L 20 134 60-140130 2 3020ND26.7 26.1 2-Chlorotoluene ug/L 20 118 60-140121 2 3020ND23.7 24.1 4-Chlorotoluene ug/L 20 122 60-140124 1 3020ND24.4 24.8 Benzene ug/L 20 123 60-140121 2 3020ND24.6 24.2 Bromobenzene ug/L 20 111 60-140111 0 3020ND22.3 22.2 Bromochloromethane ug/L 20 119 60-140113 5 3020ND23.8 22.6 Bromodichloromethane ug/L 20 117 60-140114 3 3020ND23.5 22.9 Bromoform ug/L 20 102 60-14099 3 3020ND20.4 19.7 Bromomethane ug/L 20 99 60-140102 2 3020ND19.9 20.3 Carbon tetrachloride ug/L 20 125 60-140125 0 3020ND25.0 25.0 Chlorobenzene ug/L 20 118 60-140117 1 3020ND23.7 23.5 Chloroethane ug/L 20 128 60-140122 5 3020ND25.5 24.4 Chloroform ug/L 20 126 60-140119 6 3020ND25.1 23.8 Chloromethane ug/L 20 123 60-140120 2 3020ND24.6 24.1 cis-1,2-Dichloroethene ug/L 20 130 60-140126 3 3020ND26.1 25.2 cis-1,3-Dichloropropene ug/L 20 119 60-140118 1 3020ND23.8 23.6 Dibromochloromethane ug/L 20 119 60-140113 5 3020ND23.8 22.7 Dibromomethane ug/L 20 116 60-140113 2 3020ND23.1 22.7 Dichlorodifluoromethane ug/L IH,M12016260-140157 3 3020ND32.3 31.3 Diisopropyl ether ug/L 20 133 60-140127 4 3020ND26.6 25.5 Ethylbenzene ug/L 20 122 60-140120 2 3020ND24.4 23.9 Hexachloro-1,3-butadiene ug/L 20 115 60-140120 4 3020ND23.0 23.9 Isopropylbenzene(Cumene)ug/L 20 126 60-140123 2 3020ND25.2 24.6 m&p-Xylene ug/L 40 124 60-140122 2 3040ND49.7 48.7 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 20 of 25 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92670269 Rimtrax Corporation Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units MS Result % Rec Limits Qual% RecConc. 4043383MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92670246024 4043384 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Methyl-tert-butyl ether ug/L 20 120 60-140115 5 3020ND24.1 23.0 Methylene Chloride ug/L 20 129 60-140124 4 3020ND25.9 24.8 n-Butylbenzene ug/L 20 124 60-140129 4 3020ND24.7 25.7 n-Propylbenzene ug/L 20 122 60-140123 1 3020ND24.3 24.5 Naphthalene ug/L 20 112 60-140122 8 3020ND22.3 24.3 o-Xylene ug/L 20 121 60-140119 2 3020ND24.3 23.8 sec-Butylbenzene ug/L 20 121 60-140123 2 3020ND24.2 24.6 Styrene ug/L 20 127 60-140124 2 3020ND25.3 24.8 tert-Butylbenzene ug/L 20 98 60-140100 1 3020ND19.7 19.9 Tetrachloroethene ug/L 20 115 60-140115 0 3020ND23.0 23.1 Toluene ug/L 20 119 60-140116 2 3020ND23.7 23.3 trans-1,2-Dichloroethene ug/L 20 139 60-140135 3 3020ND27.9 27.1 trans-1,3-Dichloropropene ug/L 20 121 60-140119 2 3020ND24.1 23.7 Trichloroethene ug/L 20 117 60-140118 1 3020ND23.5 23.7 Trichlorofluoromethane ug/L 20 134 60-140131 2 3020ND26.8 26.2 Vinyl chloride ug/L 20 120 60-140118 2 3020ND23.9 23.5 1,2-Dichloroethane-d4 (S)%111 70-130109 4-Bromofluorobenzene (S)%104 70-130102 Toluene-d8 (S)%99 70-13099 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 21 of 25 #=QL# QUALIFIERS Pace Project No.: Project: 92670269 Rimtrax Corporation DEFINITIONS DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot. ND - Not Detected at or above adjusted reporting limit. TNTC - Too Numerous To Count J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. MDL - Adjusted Method Detection Limit. PQL - Practical Quantitation Limit. RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and bias for a specific analyte in a specific matrix. S - Surrogate 1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is a combined concentration. Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values. LCS(D) - Laboratory Control Sample (Duplicate) MS(D) - Matrix Spike (Duplicate) DUP - Sample Duplicate RPD - Relative Percent Difference NC - Not Calculable. SG - Silica Gel - Clean-Up U - Indicates the compound was analyzed for, but not detected. Acid preservation may not be appropriate for 2 Chloroethylvinyl ether. A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA Method 8260. N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for each analyte is a combined concentration. Reported results are not rounded until the final step prior to reporting. Therefore, calculated parameters that are typically reported as "Total" may vary slightly from the sum of the reported component parameters. Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes. TNI - The NELAC Institute. ANALYTE QUALIFIERS This analyte exceeded secondary source verification criteria high for the initial calibration. The reported results should be considered an estimated value.IH Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.M1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 22 of 25 #=CR# QUALITY CONTROL DATA CROSS REFERENCE TABLE Pace Project No.: Project: 92670269 Rimtrax Corporation Lab ID Sample ID QC Batch Method QC Batch Analytical Method Analytical Batch 92670269001 779336MW-5R SM 6200B 92670269002 779336MW-2R SM 6200B 92670269003 779336Field Duplicate SM 6200B 92670269004 779435SW-1 SM 6200B REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/09/2023 03:05 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 23 of 25 Page 24 of 25 Page 25 of 25 ESP Corporate Office 3475 Lakemont Boulevard Fort Mill, SC 29708 803.802.2440 Mailing Address: P.O. 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