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HomeMy WebLinkAboutWS-2865_7196_CA_MRP_20210513SEMI-ANNUAL GROUNDWATER MONITORING REPORT Site: FORMER CS CONCRETE 3415 SANDY RIDGE ROAD COLFAX, NORTH CAROLINA Submitted To: MR. SIGURD BO CEMEX CONSTRUCTION MATERIALS, INC. 13008 TELECOM DRIVE, SUITE 300 TAMPA, FLORIDA 33637 Prepared By: ENVIROTRAC LTD. 7343 WEST FRIENDLY AVENUE, SUITE J GREENSBORO, NORTH CAROLINA 27410 (336) 763-6025 MAY 2021 Received: 5/13/2021 7343 W. Friendly Avenue, Suite J, Greensboro, NC 27410 (336) 763-6025 Fax: (336) 763-6034 www.envirotrac.com Offices in CT, FL, GA, MA, NC, NH, NJ, NY, OH, PA, VA, WV May 13, 2021 Mr. Sigurd Bo CEMEX Construction Materials, Inc. 13008 Telecom Drive, Suite 300 Tampa, Florida 33637 Reference: Semi-Annual Groundwater Monitoring Report Former CS Concrete Colfax, North Carolina Incident No. 7196 Dear Mr. Bo: EnviroTrac Ltd. is pleased to provide the enclosed report detailing the groundwater sampling event completed on April 14, 2021 as required by the North Carolina Department of Environmental Quality. A copy of this report has been forwarded to Mr. Gene Mao of the Guilford County Environmental Health Department. Should you have any questions, or require additional information, please feel free to contact the undersigned. Very truly yours, ENVIROTRAC LTD. Annamarie Blauser, PG Senior Scientist Christopher W. Hay, EI, RSM Principal Enclosure cc: Gene Mao, Guilford County Environmental Health Department w/ enclosure 11.990018.01 Page i May 13, 2021 © 2021 EnviroTrac A Report Prepared for: Mr. Sigurd Bo CEMEX Construction Materials, Inc. 13008 Telecom Drive, Suite 300 Tampa, Florida 33637 SEMI-ANNUAL GROUNDWATER MONITORING REPORT FORMER CS CONCRETE COLFAX, NORTH CAROLINA Prepared by: Annamarie Blauser, PG Senior Scientist Reviewed by: Christopher W. Hay, EI Principal EnviroTrac Ltd. 7343 W. Friendly Avenue, Suite J Greensboro, North Carolina 27410 Phone: (336) 763-6025 11.990018.01 Page iii May 13, 2021 © 2021 EnviroTrac TABLE OF CONTENTS 1.0 BACKGROUND .............................................................................................................. 1 2.0 SITE AREA RECEPTORS .............................................................................................. 2 2.1 Water Supply Wells............................................................................................... 2 2.2 Public Water Supplies ........................................................................................... 2 2.3 Surface Water ....................................................................................................... 3 2.4 Wellhead Protection Areas.................................................................................... 3 2.5 Deep Aquifers ....................................................................................................... 3 2.6 Subsurface Structures .......................................................................................... 3 2.7 Land Use .............................................................................................................. 3 3.0 SUMMARY OF REMEDIATION ACTIVITIES ................................................................. 4 4.0 METHODS ..................................................................................................................... 4 4.1 Oxygen Diffusion Technology ............................................................................... 4 4.2 Monitoring Well Sampling ..................................................................................... 5 4.3 Field Measurements ............................................................................................. 6 5.0 RESULTS ....................................................................................................................... 6 5.1 Groundwater Flow Direction .................................................................................. 6 5.2 Monitoring Well Sampling ..................................................................................... 6 5.3 Plume Geometry ................................................................................................... 7 6.0 CONCLUSIONS AND RECOMMENDATIONS ............................................................... 7 7.0 LIMITATIONS ................................................................................................................. 8 TABLES 1 Water Supply Wells Within 1,500 Feet of Release 2 Surrounding Property Owners 3 Summary of Monitoring Well and Groundwater Elevation Data 4 Aquifer Characteristics Field Analysis Summary 5 Groundwater Sample Results 6 Historical Groundwater Sample Results FIGURES 1 Site Location Map 2 Site Map 3 Receptor Map 4 Potentiometric Surface Map (April 14, 2021) 5 Benzene Isoconcentration Map 6 Total Xylenes Isoconcentration Map 7 Naphthalene Isoconcentration Map 8 1,2,4-Trimethylbenzene Isoconcentration Map 11.990018.01 Page iv May 13, 2021 © 2021 EnviroTrac APPENDICES A Laboratory Report and Chain-of-Custody B Time versus Concentration Graphs 11.990018.01 Page 1 May 13, 2021 © 2021 EnviroTrac 1.0 BACKGROUND The Former CS Concrete site is located in Colfax, North Carolina at the intersection of West Market Street and Sandy Ridge Road (Figure 1). Carolina Steel Corporation engaged in the manufacture of pre-fabricated concrete products at this location from 1961 to 1993. In January 1999, the property was sold to Triad Masonry and Materials (RMC Carolina Materials). RMC Carolina Materials manufactured concrete products at the site until January 2006 when CEMEX Construction Materials, Inc. (CEMEX) purchased the property. CEMEX (the responsible party for the release) manufactured concrete products at the site until April 2013 when Oldcastle APG South, Inc. (Oldcastle) purchased the property. Oldcastle is presently manufacturing and selling concrete products at the site. Past operations at the facility required the storage of No. 2 fuel oil in two underground storage tanks (USTs) used for heaters in the manufacturing process. Five additional USTs were used at the site to store gasoline and diesel fuel for on-site vehicles. In March 1992, Southern Pump and Tank Company (SPATCO) excavated and removed seven USTs from the site. Laboratory results of soil samples collected beneath an 8,000-gallon diesel UST and a 3,000-gallon gasoline UST indicated that a release had occurred from each. Subsequent groundwater monitoring well installation, sampling, and laboratory analysis indicated that the groundwater at the site had been impacted. A Comprehensive Site Assessment (CSA) report dated February 12, 1992, was prepared by SPATCO Environmental Services. Due to the proximity of groundwater supply wells within 1,500 feet of the site, the incident was considered high risk and warranted the installation and operation of a groundwater remediation system. A Corrective Action Plan (CAP) was prepared and submitted by Engineering Tectonics, P.A. in August 1994. At the request of the North Carolina Department of Environmental Quality (NCDEQ), in March and August 1996, Engineering Tectonics, P.A. prepared and submitted Addenda to the original CSA and CAP. In September 1998, a groundwater treatment system was brought online. The system consisted of six groundwater extraction wells (RW-1 through RW-6). The groundwater was pumped to an on-site treatment system consisting of a shallow tray air stripper, two sets of two 200-pound 11.990018.01 Page 2 May 13, 2021 © 2021 EnviroTrac carbon drums, associated transfer pumps, sediment filters, and plumbing. In 2004 a calcium (CaCO3) tank was added to maintain the pH of the system’s effluent. The location of the wells and treatment system are shown in Figure 2. The treated water was discharged to a storm water collection system, which drained into a nearby stream under an Individual NPDES Permit. The remediation system was shut down on February 13, 2007. On December 29, 2008, monitoring well MW-16 was installed approximately 130 feet east of monitoring well MW-13. Six monitoring wells were sampled on December 30, 2008. The results of the December 2008 sampling event indicated that the contaminant plume had decreased in size and downgradient receptors did not appear to be at risk of contamination. In a letter dated February 16, 2009, NCDEQ concurred with leaving the remediation system turned off while continuing semi-annual groundwater monitoring events. Following the review of the March 14, 2012 monitoring report, the Guilford County Department of Environmental Health recommended a mobile multi-phase extraction (MMPE). MMPE events followed by groundwater monitoring events were completed in November 2012, April 2015, September 2015, and April 2016. Oxygen diffusers were installed at the site in existing monitoring wells MW-12 and MW-13 on August 17, 2016. This report summarizes the results of the April 2021 groundwater monitoring event performed by EnviroTrac. 2.0 SITE AREA RECEPTORS 2.1 Water Supply Wells Public water is available to the general site area; however, private water supply wells provide potable water to many of the surrounding properties. The site is connected to public water and does not utilize a water supply well. In the 1994 CAP, ten water supply wells were identified within 1,500 feet of the site. EnviroTrac performed a visual survey update in June 2015 and located 13 water supply wells within 1,500 feet of the source area of the release. The water supply well information is summarized in Table 1 and the locations are shown in Figure 3. 2.2 Public Water Supplies The site is located within Greensboro city limits. The City of Greensboro depends upon three surface water sources to supply public water: Lake Townsend, Lake Brandt, and Lake Higgins. These lakes are located in northern Guilford County with the nearest being Lake Higgins more 11.990018.01 Page 3 May 13, 2021 © 2021 EnviroTrac than 6 miles northeast of the source area of the release. Based on the locations of fire hydrants, the nearest water main line is buried beneath West Market Street, approximately 300 feet north of the release. 2.3 Surface Water Based on the USGS Topographic Map (Figure 1), there is a pond approximately 800 feet north of the source area of the release. Headwaters for the East Fork Deep River are approximately 1,000 feet southeast of the release. An unnamed tributary to West Fork Deep River appears to start approximately 1,000 feet southwest of the release; however, based on Guilford County GIS (Figure 3), the tributary starts 1,500 feet southwest of the release. According to the NCDEQ Division of Water Resources, both East and West Fork Deep Rivers are classified as “WS-IV”. 2.4 Wellhead Protection Areas According to NCDEQ Division of Water Resources website, there are no wellhead protection areas within 1,500 feet of the source area. 2.5 Deep Aquifers According to the Geologic Map of North Carolina published in 1985, the site is located within the Carolina Slate Belt of the Piedmont Physiographic Province and is not part of the Coastal Plain Physiographic Region; therefore, the requirements for deep aquifers do not apply. 2.6 Subsurface Structures Water and sanitary sewer lines are buried under West Market Street and Sandy Ridge Road. The underground utilities are not expected to be a preferential migration pathway or a potential source of vapor accumulation. 2.7 Land Use The site is zoned heavy industrial (HI) and is currently owned and operated by Oldcastle APG South, Inc. The area within 1,500 feet of the source area of the release consists of heavy and light industrial, agricultural, and residential land use (Figure 3). The adjacent properties are summarized in Table 2 and identified on Figure 3. 11.990018.01 Page 4 May 13, 2021 © 2021 EnviroTrac 3.0 SUMMARY OF REMEDIATION ACTIVITIES The following activities occurred since the last semi-annual report: 11/18/2020 EnviroTrac personnel traveled to the site to perform monthly maintenance of oxygen diffusers and measure groundwater parameters. 12/31/2020 EnviroTrac personnel traveled to the site to perform monthly maintenance of oxygen diffusers and measure groundwater parameters. 01/19/2021 EnviroTrac personnel traveled to the site to perform monthly maintenance of oxygen diffusers and measure groundwater parameters. 02/24/2021 EnviroTrac personnel traveled to the site to perform monthly maintenance of oxygen diffusers and measure groundwater parameters. 03/25/2021 EnviroTrac personnel traveled to the site to perform monthly maintenance of oxygen diffusers and measure groundwater parameters. 04/20/2021 Submit Preapproval Task Authorization Form to NCDEQ for monthly maintenance of oxygen diffusers in monitoring wells MW-12 and MW-13 (July through December 2021). 04/14/2021 EnviroTrac personnel traveled to the site to sample five monitoring wells (MW-1, MW-7, MW-12, MW-13, and MW-14) and perform monthly maintenance of the oxygen diffusers. Each groundwater sample was analyzed by Standard Method 6200B. Oxygen cylinders were replaced in MW-12 and MW-13. 05/06/2021 Preapproval Task Authorization approved by NCDEQ. 4.0 METHODS 4.1 Oxygen Diffusion Technology The oxygen diffusers were installed at the site in existing monitoring wells MW-12 and MW-13 on August 17, 2016. The oxygen diffusers consist of silicone tubing wrapped around approximately five feet of 0.75-inch diameter PVC pipe. Oxygen is supplied from compressed gas cylinders with a regulator and gauge connected to the oxygen diffusers by Parflex tubing and a support cable. The oxygen injection system provides dissolved oxygen to the treatment wells, typically at a concentration of 40 to 200 parts per million (ppm) depending on the immersion depth of the unit 11.990018.01 Page 5 May 13, 2021 © 2021 EnviroTrac in groundwater. The dissolved oxygen concentration achieved in the injection wells depend on the height of the water column in the well. Each atmosphere of pressure allows for a maximum of approximately 41 ppm of dissolved oxygen. The estimated dissolved oxygen concentration in the wells is from 45 to 57 ppm. The concentrations are estimated based on the approximate pressure at the installation depth of the oxygen diffusers in the injection wells. The calculation is made with the assumption that 41 ppm of oxygen is dissolved in the groundwater per atmosphere of pressure. Oxygen is infused into the treatment wells from the diffusers at a typical rate of 15 standard cubic centimeters per minute or approximately 0.8 cubic feet per day. The oxygen consumption in the injection wells is tracked to estimate the remaining service life of the oxygen cylinder. The oxygen delivery system produces a convection current in the wells to distribute dissolved oxygen throughout the screened interval. A curtain of oxygen rich water disperses around the wells into the adjacent groundwater forming a treatment zone allowing enhanced bioremediation to degrade the target contaminants. 4.2 Monitoring Well Sampling Monitoring wells MW-1, MW-7, MW-12, MW-13, and MW-14 were sampled on April 14, 2021. Monitoring well locations are shown on Figure 2. Wells were opened and allowed to equilibrate to atmospheric conditions prior to obtaining static water levels. The depth to water in the wells was measured from a surveyed point on the top of each well casing using an electronic water level meter. After obtaining static water levels, each well was purged of three well volumes of groundwater or until dry using a new disposable polyethylene bailer and new nylon cord at each location. After purging the wells, a sample was collected and placed in laboratory-supplied containers, labeled, and maintained on ice until delivered to the laboratory. A chain-of-custody document was utilized throughout the collection and transportation process. The samples were sent to Pace Analytical Laboratories, Inc. in Huntersville, North Carolina to be analyzed for VOCs using Standard Method 6200B. 11.990018.01 Page 6 May 13, 2021 © 2021 EnviroTrac 4.3 Field Measurements The water level in each well was measured using an electronic water level meter accurate to 0.01 feet. The groundwater treatment system has not been in operation since 2007. Therefore, the water level measured in each monitoring well reflects static groundwater conditions. The aquifer characteristics: temperature, conductance, pH, dissolved oxygen, and oxidation- reduction potential are measured in MW-12 and MW-13 during monthly maintenance of the oxygen diffusers and in each of the wells sampled during semi-annual monitoring events. 5.0 RESULTS 5.1 Groundwater Flow Direction The depth to the water table measured April 14, 2021 varied between 12.72 and 22.24 feet below top of casing. Groundwater elevations were, on average, 1.38 feet higher than the previous sampling event. Groundwater flow is generally to the west under a gradient of 0.007 ft/ft as measured between MW-15 and MW-16. The groundwater elevation data are summarized in Table 3. The groundwater measurements collected on April 14, 2021 were used to prepare a groundwater potentiometric surface map shown on Figure 4. 5.2 Monitoring Well Sampling The aquifer characteristics are summarized in Table 4. Dissolved oxygen and oxidation reduction potential are generally higher than background levels in oxygen injection wells. The oxygen supply in MW-12 was depleted in December 2020, and the oxygen supply in MW-13 was depleted in the October 2020 and March 2021 site visits. Laboratory analysis detected contaminant concentrations above the North Carolina Administrative Code Subchapter 2L Groundwater Standards for Class GA Groundwater (2L Standards) in monitoring wells MW-7 and MW-13 with the highest concentrations in monitoring well MW-13. The following contaminants were detected at concentrations exceeding their 2L Standard: benzene, total xylenes, naphthalene, and 1,2,4-trimethylbenzene. No contaminant concentrations were detected above the laboratory detection limit in MW-1, MW-12, and MW- 14. The laboratory results from the April 14, 2021 sampling event are summarized in Table 5. The laboratory report is included as Appendix A. Historical laboratory results of the samples 11.990018.01 Page 7 May 13, 2021 © 2021 EnviroTrac collected from monitoring wells MW-1, MW-7, MW-12, MW-13, and MW-14 are summarized in Table 6. To track the contaminant concentrations over time, graphs were constructed with time versus concentration of benzene, toluene, ethylbenzene, total xylenes, IPE, and naphthalene in MW-1, MW-7, MW-12, MW-13, and MW-14 (Appendix B). Based on a review of the graphs, contaminant concentrations in monitoring well MW-1 have generally decreased and are below quantitation limits since June 2014. The contaminant concentrations in MW-7 rebounded between May 2015 and October 2016 and again since April 2020. In MW-12, the contaminant concentrations rebounded after the MMPE events but have since decreased below laboratory quantitation limits. In MW-13, the contaminant concentrations rebounded after the MMPE events but generally have a decreasing trend. Contaminant concentrations in monitoring well MW-14 have decreased below laboratory detection limits since October 2019. Isoconcentration maps showing the extent of 2L exceedances are included for benzene (Figure 5), total xylenes (Figure 6), naphthalene (Figure 7), and 1,2,4-trimethylbenzene (Figure 8). 5.3 Plume Geometry Based on the April 14, 2021 groundwater analytical results, the contaminant plume is in the general area of the former gasoline UST. The long axis of the plume is oriented in a general north-south direction. The benzene plume measures approximately 90 feet long and 20 feet wide. The areal extent of the plume has decreased. 6.0 CONCLUSIONS AND RECOMMENDATIONS The following conclusions are drawn from the April 14, 2021 sampling event: ▪ Contaminant concentrations in monitoring wells MW-12 and MW-13 have decreasing trends since installation of the oxygen diffusers in August 2016. ▪ No contaminant concentrations were detected above the laboratory detection limits in MW-1, MW-12, and MW-14. ▪ The highest contaminant concentrations were detected in MW-13, which is located in the vicinity of the former gasoline UST location. Free product was previously measured in this well in September 2001 and March 2002, but was not observed during this sampling event. 11.990018.01 Page 8 May 13, 2021 © 2021 EnviroTrac ▪ The sampling results demonstrate that the impacted groundwater plume measures approximately 90 feet long by 20 feet wide oriented in a general north to south direction. Based upon the data collected to date, EnviroTrac recommends: ▪ Remove the oxygen diffuser from monitoring well MW-12 and installing it in MW-7. ▪ Perform maintenance on the oxygen diffusers and measure aquifer characteristics (temperature, conductivity, pH, dissolved oxygen, and ORP) monthly. ▪ Collect groundwater samples from monitoring wells MW-1, MW-7, MW-12, MW- 13, and MW-14 for VOCs using Standard Method 6200B on a semi-annual basis. 7.0 LIMITATIONS EnviroTrac’s work has been performed in a manner consistent with that level of care and skill ordinarily exercised by other members of EnviroTrac’s profession practicing in the same locality, under similar conditions and at the date the services were provided. EnviroTrac’s conclusions, opinions and recommendations are based on a limited number of observations and data. It is possible that conditions could vary between or beyond the data evaluated. EnviroTrac makes no guarantee or warranty, express or implied, regarding the services, communication (oral or written), report, opinion, or instrument of service provided. EnviroTrac offers various levels of investigative and engineering services to suit the varying needs of different clients. It should be recognized that definition and evaluation of geologic and environmental conditions are a difficult and inexact science. Judgments leading to conclusions and recommendations are generally made with incomplete knowledge of the subsurface conditions present due to the limitations of data from field studies. Although risk can never be eliminated, more-detailed and extensive studies yield more information, which may help understand and manage the level of risk. Since detailed study and analysis involves greater expense, our clients participate in determining levels of service that provide adequate information for their purposes at acceptable levels of risk. More extensive studies, including subsurface studies or field tests, should be performed to reduce uncertainties. Acceptance of 11.990018.01 Page 9 May 13, 2021 © 2021 EnviroTrac this report will indicate that CEMEX Construction Materials, Inc. has reviewed the document and determined that it does not need or want a greater level of service than provided. The information included on graphic representations in this report has been compiled from a variety of sources and is subject to change without notice. EnviroTrac makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of such information. These documents are not intended for use as a land survey product, nor are they designed or intended as a construction design document. The use of the information contained on these graphic representations is at the sole risk of the party using the information. TABLES ________________________________________________________ TABLE 1: WATER SUPPLY WELLS WITHIN 1,500 FEET OF RELEASE Map ID No.Property Owner and Address Well Construction Details Appproximate Distance from Release Gradient (Up, Down, Cross) W-1 MELBA ATKINS, WANDA GRAY, HERBERT ATKINS Unknown Cross 9032 WEST MARKET STREET W-2 RUDY AND SHELIA NEEDHAM Unknown Cross 9018 WEST MARKET STREET W-3 LARRY & MARIE PARRISH Unknown Cross 9014 WEST MARKET STREET W-4 CLARENCE W. BROWN Unknown Up 8936 WEST MARKET STREET W-5 MARY Q AND RICHARD LEE WELCH Unknown Up 8920 WEST MARKET STREET W-6 HENLY DISTRIBUTION CORP. TRIAD DRIVE LLC, LITTLE SANTEE-SANDY RIDGE, LLC Unknown Up 3410 SANDY RIDGE ROAD W-7 HENLY DISTRIBUTION CORP. TRIAD DRIVE LLC, LITTLE SANTEE-SANDY RIDGE, LLC Unknown Up 3408 SANDY RIDGE ROAD W-8 REZ PATTERSON Unknown Up 3404 SANDY RIDGE ROAD W-9 BETTY BYRD LIVING TRUST Unknown Cross 3316 SANDY RIDGE ROAD W-10 ERMA LEE LONG Unknown Cross 8507 CIDER ROAD W-11 ANDY AND AMANDA MCKOIN Unknown Cross 8515 CIDER ROAD W-12 GILES CLONINGER Unknown Cross 8517 CIDER ROAD W-13 CAREY KISER LIVING TRUST Unknown Cross 8534 CIDER ROAD NOTE: See Figure 3 for water supply well locations. 1,100 feet Northeast 1,500 feet Northeast 580 feet East 1,160 feet Northwest 710 feet Northwest 560 feet North 1,340 feet Southwest 770 feet Southwest 550 feet East 680 feet Southeast 920 feet Southeast 730 feet South 750 feet Southwest 11.990018.01 © 2021 EnviroTrac May 2021 TABLE 2: SURROUNDING PROPERTY OWNERS Map ID No.PIN Property Owner Property Address SITE 7805572020 OLDCASTLE APG SOUTH INC 3415 SANDY RIDGE RD 1 7805573478 SANDY RIDGE ASSOC LLC 9001 9005 W MARKET ST 2 7805670561 EASTER, S LOWELL 8931 W MARKET ST 3 7805671185 HENLEY DISTRIBUTION CORPORATION ; TCP TRIAD DRIVE LLC ; LITTLE SANTEE-SANDY RIDGE LLC 3416 SANDY RIDGE RD 4 7805660895 HENLEY DISTRIBUTION CORPORATION ; TCP TRIAD DRIVE LLC ; LITTLE SANTEE-SANDY RIDGE LLC 3414 SANDY RIDGE RD 5 7805578187 HENLEY DISTRIBUTION CORPORATION ; TCP TRIAD DRIVE LLC ; LITTLE SANTEE-SANDY RIDGE LLC 3410 SANDY RIDGE RD 6 7805578086 HENLEY DISTRIBUTION CORPORATION ; TCP TRIAD DRIVE LLC ; LITTLE SANTEE-SANDY RIDGE LLC 3408 SANDY RIDGE RD 7 7805568975 MCGEE, S JANE 3406 SANDY RIDGE RD 8 7805568874 PATTERSON, REZ D 3404 SANDY RIDGE RD 9 7805568763 MCGEE, SANDRA JANE ; MCGEE, ROBERT WAYNE ; MCGEE, LISA MABE 3402 SANDY RIDGE RD 10 7805568663 HENLEY DISTRIBUTION CORPORATION ; TCP TRIAD DRIVE LLC ; LITTLE SANTEE-SANDY RIDGE LLC 3400 SANDY RIDGE RD 11 7805660440 BETTY N BYRD LIVING TRUST ; BYRD, BETTY N TR 3316 SANDY RIDGE RD 12 7805566458 QUICK, JAMES A ; QUICK, KAREN C 3319 SANDY RIDGE RD 13 7805565443 SMITH, FRANK THOMAS; SMITH, LYNN P 8503 CIDER RD 14 7805563364 LONG, ERMALEE D 8507 CIDER RD 15 7805561395 DODSON, SHEILA F 8513 CIDER RD 16 7805560336 MCKOIN, ANDY D ; MCKOIN, AMANDA P 8515 CIDER RD 17 7805468337 CLONINGER, GILES L III 8517 CIDER RD 18 7805465442 CAROLINA STEEL GROUP LLC 8500 8532 CIDER RD 19 7805478109 CAROLINA STEEL GROUP LLC 9035 NEAR W MARKET ST NOTE: See Figure 3 for property locations. 11.990018.01 © 2021 EnviroTrac May 2021 TABLE 3: SUMMARY OF MONITORING WELL AND GROUNDWATER ELEVATION DATASAMPLE IDMW-1 MW-2 MW-7 MW-9 MW-12 MW-13 MW-14 MW-15 MW-16Top of Casing100.10 100.00 101.19 100.57 101.22 101.37 100.88 100.82 101.68Top of Screen83.60 85.00 86.19 -104.43 86.22 89.37 85.38 84.82 86.68Bottom of Screen68.60 70.00 71.19 -119.43 71.22 74.37 70.38 69.82 71.68DateWell depth131.5 30 30 220 30 27 30.5 31 30Depth22.23 NM 21.52 30.36 26.01 19.24 21.83 dry-Elevation77.37 - 79.67 70.21 75.21 82.13 78.55 --Depth20.74 NM 22.42 30.98 22.31 FP 21.49 21.17 -Elevation78.86 - 78.77 69.59 78.91 - 78.89 78.65 -Depth19.72 NM 21.35 30.79 21.30 21.40 20.45 19.82 -Elevation79.88 - 79.84 69.78 79.92 79.97 79.93 80.00 -Depth16.67 NM 17.94 NM 18.19 18.31 NM NM-Elevation82.93 - 83.25 - 83.03 83.06 ---Depth19.50 NM 21.18 NM 21.05 21.15 20.23 19.87 -Elevation80.10 - 80.01 - 80.17 80.22 80.15 79.95 -Depth18.84 NM NM NM 20.43 20.51 19.65 19.05 -Elevation80.76 --- 80.79 80.86 80.73 80.77 -Depth20.02 NM NM NM 21.68 21.75 20.85 20.32 21.56Elevation79.58 --- 79.54 79.62 79.53 79.50 80.12Depth18.59 NM 20.42 NM 20.22 20.25 19.44 NM NMElevation81.01 - 80.77 - 81.00 81.12 80.94 --Depth18.51 19.30 20.29 NM 20.12 20.15 19.34 18.70 20.15Elevation81.09 80.70 80.90 - 81.10 81.22 81.04 81.12 81.53Depth16.84 17.56 18.71 NM 18.44 18.49 17.63 NM 18.25Elevation82.76 82.44 82.48 - 82.78 82.88 82.75 - 83.43Depth17.81 18.33 19.38 NM 19.40 19.48 18.63 NM 19.67Elevation81.79 81.67 81.81 - 81.82 81.89 81.75 - 82.01Depth17.29 17.99 19.24 NM 18.86 18.95 18.09 NM 18.71Elevation82.31 82.01 81.95 - 82.36 82.42 82.29 - 82.97Depth17.64 18.49 19.33 18.54 19.41 19.46 18.60 NM 19.02Elevation81.96 81.51 81.86 82.03 81.81 81.91 81.78 - 82.66ELEVATIONS02/10/0303/04/0412/07/0706/03/0809/01/0103/02/0212/30/0806/26/0901/06/1002/10/1206/30/1101/21/1107/08/1011.990018.01© 2021 EnviroTrac1 of 3May 2021 TABLE 3: SUMMARY OF MONITORING WELL AND GROUNDWATER ELEVATION DATASAMPLE IDMW-1 MW-2 MW-7 MW-9 MW-12 MW-13 MW-14 MW-15 MW-16Top of Casing100.10 100.00 101.19 100.57 101.22 101.37 100.88 100.82 101.68Top of Screen83.60 85.00 86.19 -104.43 86.22 89.37 85.38 84.82 86.68Bottom of Screen68.60 70.00 71.19 -119.43 71.22 74.37 70.38 69.82 71.68DateWell depth131.5 30 30 220 30 27 30.5 31 30ELEVATIONSDepth18.38 18.90 19.75 NM 19.75 19.93 19.08 18.50 19.20Elevation81.22 81.10 81.44 - 81.47 81.44 81.30 81.32 82.48Depth16.40 16.97 18.43 NM 18.01 18.06 17.23 NM 18.06Elevation83.20 83.03 82.76 - 83.21 83.31 83.15 - 83.62Depth17.15 17.41 19.53 NM 18.73 18.75 17.88 NM 18.08Elevation82.45 82.59 81.66 - 82.49 82.62 82.50 - 83.60Depth15.68 16.43 17.62 NM 17.28 17.28 16.52 NM 17.75Elevation83.92 83.57 83.57 - 83.94 84.09 83.86 - 83.93Depth 16.97 18.33 18.61 27.10 18.61 18.74 17.74 17.21 18.33Elevation 82.63 81.67 82.58 73.47 82.61 82.63 82.64 82.61 83.35Depth 18.06 18.90 19.93 28.38 19.65 19.79 18.70 18.49 19.28Elevation 81.54 81.10 81.26 72.19 81.57 81.58 81.68 81.33 82.40Depth 18.16 16.68 18.07 25.93 17.80 17.92 16.95 17.60 18.07Elevation 81.44 83.32 83.12 74.64 83.42 83.45 83.43 82.22 83.61Depth 16.57 16.92 18.36 26.71 18.15 18.27 17.29 17.20 17.96Elevation 83.03 83.08 82.83 73.86 83.07 83.10 83.09 82.62 83.72Depth 18.19 18.29 19.22 27.32 19.29 19.47 19.00 19.00 18.62Elevation 81.91 81.71 81.97 73.25 81.93 81.90 81.88 81.82 83.06Depth 18.15 18.15 19.40 27.84 19.31 19.45 18.96 19.13 18.73Elevation 81.95 81.85 81.79 72.73 81.91 81.92 81.92 81.69 82.95Depth 18.5 18.38 19.64 28.16 19.65 19.78 19.33 19.35 19.33Elevation 81.60 81.62 81.55 72.41 81.57 81.59 81.55 81.47 82.35Depth 18.02 18.24 19.22 27.59 19.26 19.53 18.90 18.85 19.39Elevation 82.08 81.76 81.97 72.98 81.96 81.84 81.98 81.97 82.2905/06/1511/29/1206/04/1412/17/1308/29/1304/20/1704/14/1610/13/1610/07/1510/12/1704/12/1810/18/1811.990018.01© 2021 EnviroTrac2 of 3May 2021 TABLE 3: SUMMARY OF MONITORING WELL AND GROUNDWATER ELEVATION DATASAMPLE IDMW-1 MW-2 MW-7 MW-9 MW-12 MW-13 MW-14 MW-15 MW-16Top of Casing100.10 100.00 101.19 100.57 101.22 101.37 100.88 100.82 101.68Top of Screen83.60 85.00 86.19 -104.43 86.22 89.37 85.38 84.82 86.68Bottom of Screen68.60 70.00 71.19 -119.43 71.22 74.37 70.38 69.82 71.68DateWell depth131.5 30 30 220 30 27 30.5 31 30ELEVATIONSDepth 15.03 15.24 16.10 24.20 16.19 16.19 15.86 15.73 14.3Elevation 85.07 84.76 85.09 76.37 85.03 85.18 85.02 85.09 87.38Depth 15.80 15.74 16.78 25.13 16.92 17.05 16.62 16.91 16.45Elevation 84.30 84.26 84.41 75.44 84.30 84.32 84.26 83.91 85.23Depth 15.80 14.26 15.95 23.62 15.46 15.45 15.15 15.89 15.32Elevation 84.30 85.74 85.24 76.95 85.76 85.92 85.73 84.93 86.36Depth 14.16 14.22 15.60 23.54 15.29 15.28 14.90 15.14 14.5Elevation 85.94 85.78 85.59 77.03 85.93 86.09 85.98 85.68 87.18Depth 12.72 12.98 14.31 22.24 13.81 13.78 13.55 13.60 13.43Elevation 87.38 87.02 86.88 78.33 87.41 87.59 87.33 87.22 88.25NOTES:1Depth of well measured from land surface (feet)FP = Free ProductNM = Not measuredElevations recorded in feet relative to temporary benchmark at MW-2 assigned an arbitrary elevation of 100 feet (resurveyed on 12/14/12). Elevations of MW-1, MW-14, and MW-15 modified prior to April 2017 sampling event corresponding to casing extensions. 04/17/1910/23/1904/21/2010/27/2004/14/2111.990018.01© 2021 EnviroTrac3 of 3May 2021 Well ID Sample Date Temperature ( °C ) Conductivity (mS/cm)pH Dissolved Oxygen (mg/L) ORP (mV) MW-1 10/13/16 19.24 0.082 7.11 0.39 -105.1 04/20/17 19.58 0.102 6.44 0.84 95.0 10/12/17 19.48 0.059 5.91 0.29 123.6 04/12/18 19.26 0.059 6.74 0.44 -353.5 10/18/18 19.45 0.131 5.10 0.39 29.8 04/17/19 19.70 0.042 5.16 0.72 223.1 10/23/19 19.39 0.008 6.28 1.01 138.7 04/21/20 18.39 0.038 -0.50 1.44 467.9 10/27/20 -- 0.031 6.62 0.35 31.1 04/14/21 19.60 0.030 6.34 0.28 111.2 MW-7 10/13/16 19.08 0.055 4.98 1.14 -153.2 04/20/17 19.54 0.053 4.71 0.65 172.3 10/12/17 19.59 0.055 4.50 0.09 285.6 04/12/18 19.72 0.057 4.64 0.34 -392.5 10/18/18 19.58 0.161 3.62 19.00 260.0 04/17/19 20.40 0.050 4.63 5.98 406.2 10/23/19 19.64 0.053 4.28 2.54 -202.6 04/21/20 18.86 0.060 4.87 1.05 232.2 10/27/20 19.73 0.052 4.87 0.30 230.0 04/14/21 20.19 0.048 4.62 2.76 331.2 MW-12 09/23/16 19.93 0.035 5.30 49.41 147.2 10/13/16 19.63 0.052 5.71 35.61 -11.3 12/14/16 20.45 0.046 6.24 68.61 143.7 01/19/17 20.29 0.403 7.21 70.70 31.4 03/17/17 19.76 0.139 6.87 37.85 -11.9 04/20/17 19.87 0.090 5.69 33.06 186.6 05/31/17 19.50 0.104 6.28 22.46 -73.8 06/28/17 19.44 0.065 6.53 42.16 111.8 07/19/17 17.41 0.070 6.25 47.18 144.9 08/09/17 19.66 0.068 5.94 45.10 280.1 09/26/17 20.35 0.050 5.20 2.83 145.5 10/12/17 20.02 0.066 5.32 13.86 83.7 11/28/17 20.11 0.047 5.88 38.07 195.8 12/14/17 20.18 0.048 6.14 39.21 142.7 02/21/18 20.05 0.036 6.24 24.43 38.5 03/28/18 18.11 0.059 7.25 45.40 96.0 04/12/18 19.48 0.102 7.07 29.47 -242.6 10/18/18 20.08 0.013 4.87 20.23 -43.1 TABLE 4: AQUIFER CHARACTERISTICS FIELD ANALYSIS SUMMARY 11.990018.01 © 2021 EnviroTrac 1 of 4 May 2021 Well ID Sample Date Temperature ( °C ) Conductivity (mS/cm)pH Dissolved Oxygen (mg/L) ORP (mV) TABLE 4: AQUIFER CHARACTERISTICS FIELD ANALYSIS SUMMARY MW-12 cont. 05/23/19 19.17 0.038 4.92 40.16 103.1 06/26/19 19.27 0.057 6.26 37.86 95.7 07/30/19 19.65 0.071 7.66 27.36 -35.2 08/28/19 19.95 0.038 6.84 42.97 398.7 09/30/19 20.66 0.036 6.58 36.27 110.0 10/23/19 20.26 0.172 5.45 26.47 -59.7 11/22/19 20.76 0.044 6.40 45.49 175.0 12/20/19 20.42 0.057 6.19 26.35 195.9 01/16/20 20.46 0.075 4.85 10.90 160.6 02/25/20 15.81 -4.92 10.08 255.9 04/01/20 19.58 0.026 6.28 9.38 207.9 04/21/20 18.94 0.032 1.51 25.08 414.3 05/15/20 19.34 0.026 5.54 26.78 49.2 06/26/20 19.90 1.936 6.48 31.01 156.9 07/13/20 18.63 0.039 6.17 16.11 94.7 08/27/20 20.68 0.030 5.62 20.70 222.9 09/28/20 20.95 0.038 6.11 19.69 201.1 10/27/20 20.10 0.026 6.72 19.85 103.6 11/18/20 21.13 0.031 6.65 21.75 154.0 12/31/20 20.52 0.037 7.06 32.82 137.0 01/19/21 20.37 0.026 6.36 18.52 188.4 02/24/21 18.37 0.043 7.54 28.06 136.9 03/25/21 18.65 0.040 6.94 22.77 127.0 04/14/21 19.61 0.029 65.60 39.23 208.0 MW-13 09/23/16 20.56 1.009 6.49 0.77 78.9 10/13/16 20.06 1.499 6.55 7.68 -70.2 12/14/16 21.10 1.378 6.82 65.78 22.7 01/19/17 20.89 1.176 7.08 157.82 33.9 03/17/17 20.54 1.319 6.93 39.73 -63.7 04/20/17 20.30 1.291 6.55 0.19 -122.7 05/31/17 19.91 1.264 6.87 31.62 -97.5 06/28/17 19.87 1.416 6.58 10.83 0.9 07/19/17 18.00 1.460 6.57 0.78 -153.9 08/09/17 20.30 1.546 6.82 26.99 79.4 09/26/17 21.01 1.294 6.92 29.34 4.2 10/12/17 20.15 1.585 6.67 0.07 -193.7 11/28/17 20.72 1.500 6.72 1.44 82.9 12/14/17 20.78 1.329 6.77 7.38 -36.1 01/23/18 20.61 1.274 7.12 0.90 -117.6 02/21/18 20.73 1.481 6.78 2.30 -26.9 11.990018.01 © 2021 EnviroTrac 2 of 4 May 2021 Well ID Sample Date Temperature ( °C ) Conductivity (mS/cm)pH Dissolved Oxygen (mg/L) ORP (mV) TABLE 4: AQUIFER CHARACTERISTICS FIELD ANALYSIS SUMMARY MW-13 cont. 03/28/18 20.02 1.533 7.16 32.50 35.2 04/12/18 20.18 1.761 6.64 0.13 -402.2 10/18/18 20.31 1.668 6.70 0.28 -160.6 04/17/19 19.50 2.220 6.54 2.79 153.0 05/23/19 19.36 2.187 6.55 5.19 98.2 06/26/19 19.68 2.822 6.53 32.22 83.9 07/30/19 20.06 2.685 7.22 24.98 -15.4 08/28/19 20.83 2.862 6.75 27.13 287.2 09/30/19 20.83 2.862 6.75 27.13 91.3 10/23/19 20.96 2.917 6.49 5.00 -52.2 11/22/19 21.59 3.347 6.77 34.67 156.4 12/20/19 21.64 3.447 6.51 18.06 190.8 01/16/20 21.35 3.096 6.75 1.39 88.1 02/25/20 20.57 3.113 6.50 31.78 199.5 04/01/20 19.83 2.989 6.75 11.89 221.4 04/21/20 19.37 2.837 6.28 3.35 126.0 05/15/20 19.95 2.837 6.03 20.46 49.5 06/26/20 19.40 0.029 6.82 22.23 149.1 07/13/20 19.37 2.344 6.13 27.72 111.0 08/27/20 20.98 2.418 6.34 22.50 171.3 09/28/20 21.47 2.233 6.51 36.06 154.3 10/27/20 20.71 2.068 6.19 1.07 130.7 11/18/20 21.69 1.779 6.82 32.14 167.1 12/31/20 21.45 1.440 6.60 42.24 138.8 01/19/21 20.25 1.252 6.76 29.18 199.9 02/24/21 20.32 1.284 6.60 29.02 170.4 03/25/21 19.42 0.983 6.67 24.44 145.3 04/14/21 20.12 1.066 6.42 9.85 80.2 11.990018.01 © 2021 EnviroTrac 3 of 4 May 2021 Well ID Sample Date Temperature ( °C ) Conductivity (mS/cm)pH Dissolved Oxygen (mg/L) ORP (mV) TABLE 4: AQUIFER CHARACTERISTICS FIELD ANALYSIS SUMMARY MW-14 10/13/16 19.47 0.316 4.11 0.71 -121.8 04/20/17 19.88 0.211 4.10 0.24 143.6 10/12/17 19.84 0.231 3.75 0.12 320.5 10/18/18 19.60 0.166 4.57 2.48 165.9 04/17/19 19.90 0.109 5.29 4.34 378.5 10/23/19 19.74 0.294 4.43 2.80 260.1 04/21/20 18.98 0.089 1.96 3.96 368.1 10/27/20 20.28 0.160 5.11 1.06 287.1 04/14/21 20.01 0.126 5.13 3.07 329.9 NOTES: oC = degrees Celsius mS/cm = millisiemens per centimeter mg/L = milligrams per liter, analogous to parts per million ORP = oxidation-reduction potential mV = millivolts Conductivity is measured for consistency in groundwater sample collection. 11.990018.01 © 2021 EnviroTrac 4 of 4 May 2021 TABLE 5: GROUNDWATER SAMPLE RESULTSSample ID MW-1 MW-7 MW-12 MW-13 MW-14Date Sampled 04/14/21 04/14/21 04/14/21 04/14/21 04/14/21Benzene BQL1.1BQL42.0BQL1TolueneBQL33.1BQL373BQL600EthylbenzeneBQL75.9BQL75.4BQL600Total XylenesBQL524BQL1,083BQL500Total BTEXBQL634.1BQL1,573BQL-Isopropyl ether (IPE)BQLBQLBQL14.0BQL70Isopropylbenzene (Cumene)BQL5.2BQL6.8BQL70Methyl-tert butyl ether (MTBE)BQLBQLBQL7.0BQL20NaphthaleneBQL36.0BQL61.1BQL6StyreneBQLBQLBQL7.1BQL701,2,4-TrimethylbenzeneBQL128BQL430BQL400NOTES:Results shown in micrograms per liter (μg/L), analogous to parts per billion2L Standards = North Carolina Subchapter 2L Quality Standards for Class GA Groundwater - April 2013Bold indicates concentrations which exceed the 2L StandardsBQL = Below the quantitation limit of the method of analysisEPA Method 6200B2L Standards11.990018.01© 2021 EnviroTracMay 2021 TABLE 6: HISTORICAL GROUNDWATER SAMPLE RESULTS Sample IDSample DateBenzene Toluene Ethylbenzene Total Xylenes Total BTEXIPENaphthalene2L Standard1600600500-706MW-107/01/981,800344 525922,78876.4BQL09/01/983,710 1,6901019206,4212763.412/01/9817,200 19,7001377,25044,287196BQL03/01/993,010945 1011,0605,11691.81.206/01/994,070 1,9502041,7107,9342084.109/01/994,770 3,4003101,93010,4101,690 28003/01/00NS NS NS NS NS NS NS09/01/008,030 6,5804202,94017,9702,570BQL03/01/013,700 1,4001801,8007,080480BQL09/01/01NS NS NS NS NS NS NS03/02/022,200 1,3001401,1004,740520BQL02/10/037,000 5,0003802,10014,4802,100NA03/04/047,000 4,7005603,31015,5701,900NA12/07/074,850 4,3004542,97612,5801,040NA06/03/085,930 4,0405583,43413,9621,330BQL12/30/084,480 2,9704962,78510,7311,050 99.506/26/094,3702,6903742,4069,840979BQL01/06/104,8802,7804692,61910,7481,140132 J07/08/104,6302,4305022,84610,4081,19011101/21/113,5301,9803632,1488,02193412506/30/113,9001,8403782,3208,4381,050BQL02/10/122,4804231761,1644,243704BQL11/29/1260044553701,06920040 J08/29/13BQLBQLBQLBQLBQLBQLBQL12/17/133.30.167 JBQL1.1 J5.1BQLBQL06/04/14BQLBQLBQLBQLBQLBQLBQL05/06/15BQLBQLBQLBQLBQLBQLBQL10/07/15BQLBQLBQLBQLBQLBQLBQL04/14/16BQLBQLBQLBQLBQLBQLBQL10/13/16BQLBQLBQLBQLBQLBQLBQL04/20/17BQLBQLBQLBQLBQLBQLBQL10/12/17BQLBQLBQLBQLBQLBQLBQL04/12/18BQLBQLBQLBQLBQLBQLBQL10/18/18BQLBQLBQLBQLBQLBQLBQLContinued on next pageVolatile Organic Compounds Analytical Results (μg/L)11.990018.01© 2021 EnviroTrac1 of 6May 2021 TABLE 6: HISTORICAL GROUNDWATER SAMPLE RESULTS Sample IDSample DateBenzene Toluene Ethylbenzene Total Xylenes Total BTEXIPENaphthalene2L Standard1600600500-706Volatile Organic Compounds Analytical Results (μg/L)MW-1 (Continued)04/17/19BQLBQLBQLBQLBQLBQLBQL10/23/19BQLBQLBQLBQLBQLBQLBQL04/21/20BQLBQLBQLBQLBQLBQLBQL10/27/20BQLBQLBQLBQLBQLBQLBQL04/14/21BQLBQLBQLBQLBQLBQLBQLMW-707/01/98NSNSNSNSNSNSNS09/01/98NSNSNSNSNSNSNS12/01/984003292811,0302,0402016203/01/994786674342,0003,5792517806/01/994101,3105993,0905,4091117709/01/993406203101,4802,750BQL21003/01/002145304943121,550316409/01/00NSNSNSNSNSNSNS03/01/014231322BQLBQL09/01/0154BQL1411017812603/02/02737BQL21029015202/11/0354192901,3101,673BQLNA03/04/0459192108601,148BQLNA12/07/07BQLBQLBQLBQLBQL0.775 JNA06/03/08NSNSNSNSNSNSNS12/30/08NSNSNSNSNSNSNS06/26/091.47BQLBQL4.93 J61.112.501/06/100.965 JBQLBQl1.841 J2.8061.040.749 J07/08/10BQLBQLBQLBQLBQL0.553 J0.444 J01/21/110.691 JBQLBQL3.045 J3.736 J1.554.6306/30/110.378 JBQLBQL2.723.098 J1.21.5402/10/12BQLBQLBQLBQLBQL0.712 JBQL11/29/12BQLBQLBQLBQLBQL1.2 J BQL08/29/131.1BQLBQL5.162.6 J1.712/17/13BQLBQLBQL1.6 J1.61.5 J0.8 J06/04/14BQLBQLBQL5.25.21.2 J1.5 J05/06/153.37.26.264.481.11.511.4Continued on next page11.990018.01© 2021 EnviroTrac2 of 6May 2021 TABLE 6: HISTORICAL GROUNDWATER SAMPLE RESULTS Sample IDSample DateBenzene Toluene Ethylbenzene Total Xylenes Total BTEXIPENaphthalene2L Standard1600600500-706Volatile Organic Compounds Analytical Results (μg/L)MW-7 (Continued)10/07/151.11 1 12 14.4 1.3 2.904/14/1610.8102 78.8 488679.6 2.351.310/13/164.111.4 11.5 116.7143.71.620.404/20/17 0.96 BQL BQL 9.6 10.6 0.94 3.604/20/17 0.96 BQL BQL 9.6 10.6 0.94 3.610/12/17 0.65 BQL BQL 9.4 10.1 1.1 3.204/12/181.5BQL BQL 20 21.5 0.896.110/18/181.7BQL 1.6 33.8 37.1 0.867.604/17/19 BQL BQL BQL 6.5 6.5 0.53 BQL10/23/191.52.4 3.7 56.8 64.4 0.949.504/21/202.018.0 29.0 234.8 283.8 0.8130.710/27/202.990.5 115.0765973.4 BQL8104/14/211.133.1 75.9524634.1 BQL36.0MW-1207/01/986,130 5,600 854 4,53017,1141,280 7909/01/9814,300 18,500 2,800 8,60044,2003,040 57412/01/9810,800 27,900 2,740 13,70055,140 BQL55203/01/9915,000 19,600 1,810 9,95046,3602,880 94406/01/9919,200 31,100 2,650 13,70066,6504,040 56709/01/9912,100 16,800 1,550 8,40038,8504,070 48003/01/0012,200 15,400 2,150 13,10042,8502,450 55009/01/0011,300 20,000 2,080 11,10044,4801,240 57803/01/0120,000 29,000 3,300 20,00072,3002,100BQL09/01/017,800 7,500 1,600 8,90025,800550 35003/02/027,800 6,000 1,500 9,50024,800690 40002/10/035,800 7,200 1,400 7,50021,900 BQL NA03/04/046,000 3,800 1,100 6,40017,300440NA12/07/073,550922486 3,1758,133340NA06/03/084,7504,000996 5,60015,346449 31312/30/083,250 1,200 572 3,3788,400331 93.706/26/093,660 2,490 722 4,34011,212393 58.9 J01/06/104,580 3,200 982 5,63014,392393 14907/08/103,200 7814933,3317,805330 55.5 JContinued on next page11.990018.01© 2021 EnviroTrac3 of 6May 2021 TABLE 6: HISTORICAL GROUNDWATER SAMPLE RESULTS Sample IDSample DateBenzene Toluene Ethylbenzene Total Xylenes Total BTEXIPENaphthalene2L Standard1600600500-706Volatile Organic Compounds Analytical Results (μg/L)MW-12 (Continued)01/21/113,190 7585373,4177,902393 81.206/30/112,790 4434112,9706,614416BQL02/10/122,760 6004573,0326,849391BQL11/29/128,600 15,000 1,300 8,50033,400730 40008/29/132,200 1,400 440 3,2407,280480 70 J12/17/132,700 1,7005204,5009,420500 58 J06/04/142,500 1,4004703,7008,070480 57 J05/06/156,730 13,600 1,360 9,25030,940552 41410/07/158,150 15,600 1,440 7,22032,410771 42204/14/167,170 14,000 1,330 7,82030,320859 35210/13/1610364.2 4.7 83.9255.852.4 3.504/20/1718.519.2 3.6 25.1 66.4 24.9 BQL10/12/17204156 27.0 165.6 552.6120BQL04/12/18 BQL BQL BQL BQL BQL BQL BQL10/18/18 BQL BQL BQL BQL BQL BQL BQL04/17/19 BQL BQL BQL BQL BQL BQL BQL10/23/19BQLBQLBQLBQLBQLBQLBQL04/21/20BQLBQLBQLBQLBQLBQLBQL10/27/20BQLBQLBQLBQLBQLBQLBQL04/14/21BQLBQLBQLBQLBQLBQLBQLMW-1307/01/98892 4,750 1,770 10,00017,412 BQL71909/01/983,400 12,900 3,100 14,20033,600 BQL1,93012/01/983,140 5,470 2,150 8,03018,790 541,10003/01/9911,400 29,200 3,130 17,50061,23090 1,16006/01/9920,300 36,600 3,700 19,10079,700685 90909/01/997,610 18,700 2,620 13,90042,830 BQL73003/01/0010,900 29,500 3,800 22,60066,800 BQL1,00009/01/009,000 19,600 3,200 17,10048,900172 1,03003/01/0146,000 69,000 5,200 35,000155,200 BQL BQL09/01/01 FP FP FP FP - FP FP03/02/02 FP FP FP FP - FP FP02/03/0325,000 39,000BQL9,80073,800 BQL NAContinued on next page11.990018.01© 2021 EnviroTrac4 of 6May 2021 TABLE 6: HISTORICAL GROUNDWATER SAMPLE RESULTS Sample IDSample DateBenzene Toluene Ethylbenzene Total Xylenes Total BTEXIPENaphthalene2L Standard1600600500-706Volatile Organic Compounds Analytical Results (μg/L)MW-13 (Continued)03/04/0417,000 32,000 2,600 15,70067,300 BQL NA12/07/0710,400 31,200 2,460 14,46058,520 294 NA06/03/0814,100 31,400 2,580 14,18062,260 BQL1,34012/30/0810,200 28,800 1,900 11,41052,310 BQL1,50006/26/0915,000 32,200 2,350 13,95063,5001,290BQL01/06/1013,600 35,800 3,000 17,37069,7702,140 85207/08/108,690 28,800 2,450 14,54054,480262 79301/21/116,880 27,100 2,880 15,67052,530783 1,29006/30/116,580 26,400 2,640 14,48050,100369 JBQL02/10/127,070 27,400 2,570 14,18051,220309 JBQL11/29/1221,000 41,000 4,000 18,90084,9003,000 1,20008/29/1311,000 43,000 3,500 19,00076,500570 1,00012/17/137,200 36,000 3,500 22,00068,700460 J 1,10006/04/147,600 34,000 3,200 18,10062,900430 1,10005/06/1519,400 33,200 2,470 13,30068,3702,760 81910/07/1512,800 29,200 2,080 9,68053,7601,910 75304/14/1614,500 26,500 2,130 11,39054,5201,980 63610/13/166,150 29,800 2,020 12,05050,020771 88304/20/172,980 16,900 1,350 10,99032,220718 68410/12/172,650 19,100 1,520 13,51036,780721 82804/12/182,000 11,900 1,180 9,14024,220469 71310/18/182,230 9,180 798 8,09020,298553 76704/17/191,010 7,7105316,86016,111372 38810/23/195725,5103735,21011,66513126504/21/202312,0703603,2505,91137.123910/27/201521,2602862,3604,05819.517604/14/2142.0373 75.41,0831,573 14.061.1MW-1412/07/075.22BQL BQL BQL 5.22 BQL BQL06/03/0813.3BQL BQL BQL 13.30 BQL BQL12/30/0812.9BQL BQL 1.03 J 13.93 BQL BQL06/26/099.6BQL BQL 1.37 J 11.00 BQL BQL01/06/1018.10.329 J 0.205 J2.297 J20.93BQLBQLContinued on next page11.990018.01© 2021 EnviroTrac5 of 6May 2021 TABLE 6: HISTORICAL GROUNDWATER SAMPLE RESULTS Sample IDSample DateBenzene Toluene Ethylbenzene Total Xylenes Total BTEXIPENaphthalene2L Standard1600600500-706Volatile Organic Compounds Analytical Results (μg/L)MW-14 (Continued)07/08/1010.90.423 JBQL1.58 J12.90BQLBQL01/21/1116.5BQLBQL2.468 J18.968 JBQLBQL06/30/1111.80.351 JBQL2.214.361 JBQLBQL02/10/1223.30.327 JBQL2.125.36BQLBQL11/29/1216.0BQLBQL3.819.60BQLBQL08/29/1320.0BQLBQL3.020.98BQLBQL12/17/1320.0BQLBQL3.323.30BQLBQL06/04/1420.0BQLBQL4.024.00BQLBQL05/06/156.3BQLBQL3.810.1BQLBQL10/07/155.9BQLBQL3.79.6BQLBQL04/14/167.3BQLBQL3.711.0BQLBQL10/13/163.3BQLBQL1.765.1BQLBQL04/20/174.2BQLBQLBQL4.2BQLBQL10/12/173.5BQLBQL1.745.2BQLBQL04/12/184.7BQLBQL3.48.1BQLBQL10/18/181.9BQLBQLBQL1.9BQLBQL04/17/192.0BQLBQLBQL2.0BQLBQL10/23/19BQLBQLBQLBQLBQLBQLBQL04/21/20BQLBQLBQLBQLBQLBQLBQL10/27/20BQLBQLBQLBQLBQLBQLBQL04/14/21BQLBQLBQLBQLBQLBQLBQLNOTES:Results shown in micrograms per liter (μg/L), analogous to parts per billion2L Standards = North Carolina Subchapter 2L Quality Standards for Class GA Groundwater - April 2013Bold indicates concentrations which exceed the 2L StandardsBQL = Below the quantitation limit of the method of analysisIPE - Isopropyl EtherFP - Free productNS - Not SampledNA - Not Analyzed for this compound11.990018.01© 2021 EnviroTrac6 of 6May 2021 FIGURES ________________________________________________________ APPENDIX A LABORATORY REPORT AND CHAIN-OF-CUSTODY ________________________________________________________ #=CL# April 21, 2021 LIMS USE: FR - CHRIS HAY LIMS OBJECT ID: 92533561 92533561 Project: Pace Project No.: RE: Chris Hay EnviroTrac 7343 W. Friendly Avenue Suite J Greensboro, NC 27410 CEMEX 11.990018.01 Dear Chris Hay: Enclosed are the analytical results for sample(s) received by the laboratory on April 15, 2021. 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, Angela Baioni angela.baioni@pacelabs.com Project Manager (704)875-9092 Enclosures cc:Annamarie Blauser, EnviroTrac Ltd Gail Hay, EnviroTrac, Ltd. Elizabeth Taccone, Envirotrac - NC 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 34 #=CP# CERTIFICATIONS Pace Project No.: Project: 92533561 CEMEX 11.990018.01 Pace Analytical Services Charlotte 9800 Kincey Ave. Ste 100, Huntersville, NC 28078 Louisiana/NELAP Certification # LA170028 North Carolina Drinking Water Certification #: 37706 North Carolina Field Services Certification #: 5342 North Carolina Wastewater Certification #: 12 South Carolina Certification #: 99006001 Florida/NELAP Certification #: E87627 Kentucky UST Certification #: 84 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 34 #=SA# SAMPLE ANALYTE COUNT Pace Project No.: Project: 92533561 CEMEX 11.990018.01 Lab ID Sample ID Method Analytes Reported LaboratoryAnalysts 92533561001 MW-1 SM 6200B 63 PASI-CSAS 92533561002 MW-7 SM 6200B 63 PASI-CSAS 92533561003 MW-12 SM 6200B 63 PASI-CSAS 92533561004 MW-13 SM 6200B 63 PASI-CSAS 92533561005 MW-14 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 3 of 34 #=HO# SUMMARY OF DETECTION Pace Project No.: Project: 92533561 CEMEX 11.990018.01 Parameters AnalyzedResult Lab Sample ID Report Limit QualifiersUnitsMethod Client Sample ID 92533561002 MW-7 Benzene 1.1 ug/L 04/21/21 02:090.50SM 6200B Ethylbenzene 75.9 ug/L 04/21/21 02:090.50SM 6200B Isopropylbenzene (Cumene)5.2 ug/L 04/21/21 02:090.50SM 6200B Naphthalene 36.0 ug/L 04/21/21 02:092.0SM 6200B Toluene 33.1 ug/L 04/21/21 02:090.50SM 6200B 1,2,4-Trimethylbenzene 128 ug/L 04/21/21 02:090.50SM 6200B m&p-Xylene 377 ug/L 04/21/21 02:091.0SM 6200B o-Xylene 147 ug/L 04/21/21 02:090.50SM 6200B 92533561004 MW-13 Benzene 42.0 ug/L 04/20/21 19:502.0SM 6200B Diisopropyl ether 14.0 ug/L 04/20/21 19:502.0SM 6200B Ethylbenzene 75.4 ug/L 04/20/21 19:502.0SM 6200B Isopropylbenzene (Cumene)6.8 ug/L 04/20/21 19:502.0SM 6200B Methyl-tert-butyl ether 7.0 ug/L 04/20/21 19:502.0SM 6200B Naphthalene 61.1 ug/L 04/20/21 19:508.0SM 6200B Styrene 7.1 ug/L 04/20/21 19:502.0SM 6200B Toluene 373 ug/L 04/20/21 19:502.0SM 6200B 1,2,4-Trimethylbenzene 430 ug/L 04/20/21 19:502.0SM 6200B m&p-Xylene 679 ug/L 04/20/21 19:504.0SM 6200B o-Xylene 404 ug/L 04/20/21 19:502.0SM 6200B 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 34 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92533561 CEMEX 11.990018.01 Sample: MW-1 Lab ID: 92533561001 Collected: 04/14/21 09:40 Received: 04/15/21 10:18 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 04/16/21 14:04 71-43-20.50 1 Bromobenzene ND ug/L 04/16/21 14:04 108-86-10.50 1 Bromochloromethane ND ug/L 04/16/21 14:04 74-97-50.50 1 Bromodichloromethane ND ug/L 04/16/21 14:04 75-27-40.50 1 Bromoform ND ug/L 04/16/21 14:04 75-25-20.50 1 Bromomethane ND ug/L 04/16/21 14:04 74-83-95.0 1 n-Butylbenzene ND ug/L 04/16/21 14:04 104-51-80.50 1 sec-Butylbenzene ND ug/L 04/16/21 14:04 135-98-80.50 1 tert-Butylbenzene ND ug/L 04/16/21 14:04 98-06-60.50 1 Carbon tetrachloride ND ug/L 04/16/21 14:04 56-23-50.50 1 Chlorobenzene ND ug/L 04/16/21 14:04 108-90-70.50 1 Chloroethane ND ug/L 04/16/21 14:04 75-00-31.0 1 Chloroform ND ug/L 04/16/21 14:04 67-66-30.50 1 Chloromethane ND ug/L 04/16/21 14:04 74-87-31.0 1 2-Chlorotoluene ND ug/L 04/16/21 14:04 95-49-80.50 1 4-Chlorotoluene ND ug/L 04/16/21 14:04 106-43-40.50 1 1,2-Dibromo-3-chloropropane ND ug/L 04/16/21 14:04 96-12-81.0 1 Dibromochloromethane ND ug/L 04/16/21 14:04 124-48-10.50 1 1,2-Dibromoethane (EDB)ND ug/L 04/16/21 14:04 106-93-40.50 1 Dibromomethane ND ug/L 04/16/21 14:04 74-95-30.50 1 1,2-Dichlorobenzene ND ug/L 04/16/21 14:04 95-50-10.50 1 1,3-Dichlorobenzene ND ug/L 04/16/21 14:04 541-73-10.50 1 1,4-Dichlorobenzene ND ug/L 04/16/21 14:04 106-46-70.50 1 Dichlorodifluoromethane ND ug/L 04/16/21 14:04 75-71-80.50 1 1,1-Dichloroethane ND ug/L 04/16/21 14:04 75-34-30.50 1 1,2-Dichloroethane ND ug/L 04/16/21 14:04 107-06-20.50 1 1,1-Dichloroethene ND ug/L 04/16/21 14:04 75-35-40.50 1 cis-1,2-Dichloroethene ND ug/L 04/16/21 14:04 156-59-20.50 1 trans-1,2-Dichloroethene ND ug/L 04/16/21 14:04 156-60-50.50 1 1,2-Dichloropropane ND ug/L 04/16/21 14:04 78-87-50.50 1 1,3-Dichloropropane ND ug/L 04/16/21 14:04 142-28-90.50 1 2,2-Dichloropropane ND ug/L 04/16/21 14:04 594-20-70.50 1 1,1-Dichloropropene ND ug/L 04/16/21 14:04 563-58-60.50 1 cis-1,3-Dichloropropene ND ug/L 04/16/21 14:04 10061-01-50.50 1 trans-1,3-Dichloropropene ND ug/L 04/16/21 14:04 10061-02-60.50 1 Diisopropyl ether ND ug/L 04/16/21 14:04 108-20-30.50 1 Ethylbenzene ND ug/L 04/16/21 14:04 100-41-40.50 1 Hexachloro-1,3-butadiene ND ug/L 04/16/21 14:04 87-68-32.0 1 Isopropylbenzene (Cumene)ND ug/L 04/16/21 14:04 98-82-80.50 1 Methylene Chloride ND ug/L 04/16/21 14:04 75-09-22.0 1 Methyl-tert-butyl ether ND ug/L 04/16/21 14:04 1634-04-40.50 1 Naphthalene ND ug/L 04/16/21 14:04 91-20-32.0 1 n-Propylbenzene ND ug/L 04/16/21 14:04 103-65-10.50 1 Styrene ND ug/L 04/16/21 14:04 100-42-50.50 1 1,1,1,2-Tetrachloroethane ND ug/L 04/16/21 14:04 630-20-60.50 1 1,1,2,2-Tetrachloroethane ND ug/L 04/16/21 14:04 79-34-50.50 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 5 of 34 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92533561 CEMEX 11.990018.01 Sample: MW-1 Lab ID: 92533561001 Collected: 04/14/21 09:40 Received: 04/15/21 10:18 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Tetrachloroethene ND ug/L 04/16/21 14:04 127-18-40.50 1 Toluene ND ug/L 04/16/21 14:04 108-88-30.50 1 1,2,3-Trichlorobenzene ND ug/L 04/16/21 14:04 87-61-62.0 1 1,2,4-Trichlorobenzene ND ug/L 04/16/21 14:04 120-82-12.0 1 1,1,1-Trichloroethane ND ug/L 04/16/21 14:04 71-55-60.50 1 1,1,2-Trichloroethane ND ug/L 04/16/21 14:04 79-00-50.50 1 Trichloroethene ND ug/L 04/16/21 14:04 79-01-60.50 1 Trichlorofluoromethane ND ug/L 04/16/21 14:04 75-69-41.0 1 1,2,3-Trichloropropane ND ug/L 04/16/21 14:04 96-18-40.50 1 1,2,4-Trimethylbenzene ND ug/L 04/16/21 14:04 95-63-60.50 1 1,3,5-Trimethylbenzene ND ug/L 04/16/21 14:04 108-67-80.50 1 Vinyl chloride ND ug/L 04/16/21 14:04 75-01-41.0 1 m&p-Xylene ND ug/L 04/16/21 14:04 179601-23-11.0 1 o-Xylene ND ug/L 04/16/21 14:04 95-47-60.50 1 Surrogates 1,2-Dichloroethane-d4 (S)99 %04/16/21 14:04 17060-07-070-130 1 4-Bromofluorobenzene (S)93 %04/16/21 14:04 460-00-470-130 1 Toluene-d8 (S)99 %04/16/21 14:04 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: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 6 of 34 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92533561 CEMEX 11.990018.01 Sample: MW-7 Lab ID: 92533561002 Collected: 04/14/21 11:27 Received: 04/15/21 10:18 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene 1.1 ug/L 04/21/21 02:09 71-43-20.50 1 Bromobenzene ND ug/L 04/21/21 02:09 108-86-10.50 1 Bromochloromethane ND ug/L 04/21/21 02:09 74-97-50.50 1 Bromodichloromethane ND ug/L 04/21/21 02:09 75-27-40.50 1 Bromoform ND ug/L 04/21/21 02:09 75-25-20.50 1 Bromomethane ND ug/L 04/21/21 02:09 74-83-95.0 1 n-Butylbenzene ND ug/L 04/21/21 02:09 104-51-80.50 1 sec-Butylbenzene ND ug/L 04/21/21 02:09 135-98-80.50 1 tert-Butylbenzene ND ug/L 04/21/21 02:09 98-06-60.50 1 Carbon tetrachloride ND ug/L 04/21/21 02:09 56-23-50.50 1 Chlorobenzene ND ug/L 04/21/21 02:09 108-90-70.50 1 Chloroethane ND ug/L 04/21/21 02:09 75-00-31.0 1 Chloroform ND ug/L 04/21/21 02:09 67-66-30.50 1 Chloromethane ND ug/L 04/21/21 02:09 74-87-31.0 1 2-Chlorotoluene ND ug/L 04/21/21 02:09 95-49-80.50 1 4-Chlorotoluene ND ug/L 04/21/21 02:09 106-43-40.50 1 1,2-Dibromo-3-chloropropane ND ug/L 04/21/21 02:09 96-12-81.0 1 Dibromochloromethane ND ug/L 04/21/21 02:09 124-48-10.50 1 1,2-Dibromoethane (EDB)ND ug/L 04/21/21 02:09 106-93-40.50 1 Dibromomethane ND ug/L 04/21/21 02:09 74-95-30.50 1 1,2-Dichlorobenzene ND ug/L 04/21/21 02:09 95-50-10.50 1 1,3-Dichlorobenzene ND ug/L 04/21/21 02:09 541-73-10.50 1 1,4-Dichlorobenzene ND ug/L 04/21/21 02:09 106-46-70.50 1 Dichlorodifluoromethane ND ug/L 04/21/21 02:09 75-71-80.50 1 1,1-Dichloroethane ND ug/L 04/21/21 02:09 75-34-30.50 1 1,2-Dichloroethane ND ug/L 04/21/21 02:09 107-06-20.50 1 1,1-Dichloroethene ND ug/L 04/21/21 02:09 75-35-40.50 1 cis-1,2-Dichloroethene ND ug/L 04/21/21 02:09 156-59-20.50 1 trans-1,2-Dichloroethene ND ug/L 04/21/21 02:09 156-60-50.50 1 1,2-Dichloropropane ND ug/L 04/21/21 02:09 78-87-50.50 1 1,3-Dichloropropane ND ug/L 04/21/21 02:09 142-28-90.50 1 2,2-Dichloropropane ND ug/L 04/21/21 02:09 594-20-70.50 1 1,1-Dichloropropene ND ug/L 04/21/21 02:09 563-58-60.50 1 cis-1,3-Dichloropropene ND ug/L 04/21/21 02:09 10061-01-50.50 1 trans-1,3-Dichloropropene ND ug/L 04/21/21 02:09 10061-02-60.50 1 Diisopropyl ether ND ug/L 04/21/21 02:09 108-20-30.50 1 Ethylbenzene 75.9 ug/L 04/21/21 02:09 100-41-40.50 1 Hexachloro-1,3-butadiene ND ug/L 04/21/21 02:09 87-68-32.0 1 Isopropylbenzene (Cumene)5.2 ug/L 04/21/21 02:09 98-82-80.50 1 Methylene Chloride ND ug/L 04/21/21 02:09 75-09-22.0 1 Methyl-tert-butyl ether ND ug/L 04/21/21 02:09 1634-04-40.50 1 Naphthalene 36.0 ug/L 04/21/21 02:09 91-20-32.0 1 n-Propylbenzene ND ug/L 04/21/21 02:09 103-65-10.50 1 Styrene ND ug/L 04/21/21 02:09 100-42-50.50 1 1,1,1,2-Tetrachloroethane ND ug/L 04/21/21 02:09 630-20-60.50 1 1,1,2,2-Tetrachloroethane ND ug/L 04/21/21 02:09 79-34-50.50 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 7 of 34 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92533561 CEMEX 11.990018.01 Sample: MW-7 Lab ID: 92533561002 Collected: 04/14/21 11:27 Received: 04/15/21 10:18 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Tetrachloroethene ND ug/L 04/21/21 02:09 127-18-40.50 1 Toluene 33.1 ug/L 04/21/21 02:09 108-88-30.50 1 1,2,3-Trichlorobenzene ND ug/L 04/21/21 02:09 87-61-62.0 1 1,2,4-Trichlorobenzene ND ug/L 04/21/21 02:09 120-82-12.0 1 1,1,1-Trichloroethane ND ug/L 04/21/21 02:09 71-55-60.50 1 1,1,2-Trichloroethane ND ug/L 04/21/21 02:09 79-00-50.50 1 Trichloroethene ND ug/L 04/21/21 02:09 79-01-60.50 1 Trichlorofluoromethane ND ug/L 04/21/21 02:09 75-69-41.0 1 1,2,3-Trichloropropane ND ug/L 04/21/21 02:09 96-18-40.50 1 1,2,4-Trimethylbenzene 128 ug/L 04/21/21 02:09 95-63-60.50 1 1,3,5-Trimethylbenzene ND ug/L 04/21/21 02:09 108-67-80.50 1 Vinyl chloride ND ug/L 04/21/21 02:09 75-01-41.0 1 m&p-Xylene 377 ug/L 04/21/21 02:09 179601-23-11.0 1 o-Xylene 147 ug/L 04/21/21 02:09 95-47-60.50 1 Surrogates 1,2-Dichloroethane-d4 (S)94 %04/21/21 02:09 17060-07-070-130 1 4-Bromofluorobenzene (S)102 %04/21/21 02:09 460-00-470-130 1 Toluene-d8 (S)101 %04/21/21 02:09 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: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 8 of 34 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92533561 CEMEX 11.990018.01 Sample: MW-12 Lab ID: 92533561003 Collected: 04/14/21 10:32 Received: 04/15/21 10:18 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 04/16/21 13:28 71-43-20.50 1 Bromobenzene ND ug/L 04/16/21 13:28 108-86-10.50 1 Bromochloromethane ND ug/L 04/16/21 13:28 74-97-50.50 1 Bromodichloromethane ND ug/L 04/16/21 13:28 75-27-40.50 1 Bromoform ND ug/L 04/16/21 13:28 75-25-20.50 1 Bromomethane ND ug/L 04/16/21 13:28 74-83-95.0 1 n-Butylbenzene ND ug/L 04/16/21 13:28 104-51-80.50 1 sec-Butylbenzene ND ug/L 04/16/21 13:28 135-98-80.50 1 tert-Butylbenzene ND ug/L 04/16/21 13:28 98-06-60.50 1 Carbon tetrachloride ND ug/L 04/16/21 13:28 56-23-50.50 1 Chlorobenzene ND ug/L 04/16/21 13:28 108-90-70.50 1 Chloroethane ND ug/L 04/16/21 13:28 75-00-31.0 1 Chloroform ND ug/L 04/16/21 13:28 67-66-30.50 1 Chloromethane ND ug/L 04/16/21 13:28 74-87-31.0 1 2-Chlorotoluene ND ug/L 04/16/21 13:28 95-49-80.50 1 4-Chlorotoluene ND ug/L 04/16/21 13:28 106-43-40.50 1 1,2-Dibromo-3-chloropropane ND ug/L 04/16/21 13:28 96-12-81.0 1 Dibromochloromethane ND ug/L 04/16/21 13:28 124-48-10.50 1 1,2-Dibromoethane (EDB)ND ug/L 04/16/21 13:28 106-93-40.50 1 Dibromomethane ND ug/L 04/16/21 13:28 74-95-30.50 1 1,2-Dichlorobenzene ND ug/L 04/16/21 13:28 95-50-10.50 1 1,3-Dichlorobenzene ND ug/L 04/16/21 13:28 541-73-10.50 1 1,4-Dichlorobenzene ND ug/L 04/16/21 13:28 106-46-70.50 1 Dichlorodifluoromethane ND ug/L 04/16/21 13:28 75-71-80.50 1 1,1-Dichloroethane ND ug/L 04/16/21 13:28 75-34-30.50 1 1,2-Dichloroethane ND ug/L 04/16/21 13:28 107-06-20.50 1 1,1-Dichloroethene ND ug/L 04/16/21 13:28 75-35-40.50 1 cis-1,2-Dichloroethene ND ug/L 04/16/21 13:28 156-59-20.50 1 trans-1,2-Dichloroethene ND ug/L 04/16/21 13:28 156-60-50.50 1 1,2-Dichloropropane ND ug/L 04/16/21 13:28 78-87-50.50 1 1,3-Dichloropropane ND ug/L 04/16/21 13:28 142-28-90.50 1 2,2-Dichloropropane ND ug/L 04/16/21 13:28 594-20-70.50 1 1,1-Dichloropropene ND ug/L 04/16/21 13:28 563-58-60.50 1 cis-1,3-Dichloropropene ND ug/L 04/16/21 13:28 10061-01-50.50 1 trans-1,3-Dichloropropene ND ug/L 04/16/21 13:28 10061-02-60.50 1 Diisopropyl ether ND ug/L 04/16/21 13:28 108-20-30.50 1 Ethylbenzene ND ug/L 04/16/21 13:28 100-41-40.50 1 Hexachloro-1,3-butadiene ND ug/L 04/16/21 13:28 87-68-32.0 1 Isopropylbenzene (Cumene)ND ug/L 04/16/21 13:28 98-82-80.50 1 Methylene Chloride ND ug/L 04/16/21 13:28 75-09-22.0 1 Methyl-tert-butyl ether ND ug/L 04/16/21 13:28 1634-04-40.50 1 Naphthalene ND ug/L 04/16/21 13:28 91-20-32.0 1 n-Propylbenzene ND ug/L 04/16/21 13:28 103-65-10.50 1 Styrene ND ug/L 04/16/21 13:28 100-42-50.50 1 1,1,1,2-Tetrachloroethane ND ug/L 04/16/21 13:28 630-20-60.50 1 1,1,2,2-Tetrachloroethane ND ug/L 04/16/21 13:28 79-34-50.50 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 9 of 34 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92533561 CEMEX 11.990018.01 Sample: MW-12 Lab ID: 92533561003 Collected: 04/14/21 10:32 Received: 04/15/21 10:18 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Tetrachloroethene ND ug/L 04/16/21 13:28 127-18-40.50 1 Toluene ND ug/L 04/16/21 13:28 108-88-30.50 1 1,2,3-Trichlorobenzene ND ug/L 04/16/21 13:28 87-61-62.0 1 1,2,4-Trichlorobenzene ND ug/L 04/16/21 13:28 120-82-12.0 1 1,1,1-Trichloroethane ND ug/L 04/16/21 13:28 71-55-60.50 1 1,1,2-Trichloroethane ND ug/L 04/16/21 13:28 79-00-50.50 1 Trichloroethene ND ug/L 04/16/21 13:28 79-01-60.50 1 Trichlorofluoromethane ND ug/L 04/16/21 13:28 75-69-41.0 1 1,2,3-Trichloropropane ND ug/L 04/16/21 13:28 96-18-40.50 1 1,2,4-Trimethylbenzene ND ug/L 04/16/21 13:28 95-63-60.50 1 1,3,5-Trimethylbenzene ND ug/L 04/16/21 13:28 108-67-80.50 1 Vinyl chloride ND ug/L 04/16/21 13:28 75-01-41.0 1 m&p-Xylene ND ug/L 04/16/21 13:28 179601-23-11.0 1 o-Xylene ND ug/L 04/16/21 13:28 95-47-60.50 1 Surrogates 1,2-Dichloroethane-d4 (S)99 %04/16/21 13:28 17060-07-070-130 1 4-Bromofluorobenzene (S)92 %04/16/21 13:28 460-00-470-130 1 Toluene-d8 (S)99 %04/16/21 13:28 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: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 10 of 34 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92533561 CEMEX 11.990018.01 Sample: MW-13 Lab ID: 92533561004 Collected: 04/14/21 10:03 Received: 04/15/21 10:18 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene 42.0 ug/L 04/20/21 19:50 71-43-22.0 4 Bromobenzene ND ug/L 04/20/21 19:50 108-86-12.0 4 Bromochloromethane ND ug/L 04/20/21 19:50 74-97-52.0 4 Bromodichloromethane ND ug/L 04/20/21 19:50 75-27-42.0 4 Bromoform ND ug/L 04/20/21 19:50 75-25-22.0 4 Bromomethane ND ug/L 04/20/21 19:50 74-83-920.0 4 n-Butylbenzene ND ug/L 04/20/21 19:50 104-51-82.0 4 sec-Butylbenzene ND ug/L 04/20/21 19:50 135-98-82.0 4 tert-Butylbenzene ND ug/L 04/20/21 19:50 98-06-62.0 4 Carbon tetrachloride ND ug/L 04/20/21 19:50 56-23-52.0 4 Chlorobenzene ND ug/L 04/20/21 19:50 108-90-72.0 4 Chloroethane ND ug/L 04/20/21 19:50 75-00-34.0 4 Chloroform ND ug/L 04/20/21 19:50 67-66-32.0 4 Chloromethane ND ug/L 04/20/21 19:50 74-87-34.0 4 2-Chlorotoluene ND ug/L 04/20/21 19:50 95-49-82.0 4 4-Chlorotoluene ND ug/L 04/20/21 19:50 106-43-42.0 4 1,2-Dibromo-3-chloropropane ND ug/L 04/20/21 19:50 96-12-84.0 4 Dibromochloromethane ND ug/L 04/20/21 19:50 124-48-12.0 4 1,2-Dibromoethane (EDB)ND ug/L 04/20/21 19:50 106-93-42.0 4 Dibromomethane ND ug/L 04/20/21 19:50 74-95-32.0 4 1,2-Dichlorobenzene ND ug/L 04/20/21 19:50 95-50-12.0 4 1,3-Dichlorobenzene ND ug/L 04/20/21 19:50 541-73-12.0 4 1,4-Dichlorobenzene ND ug/L 04/20/21 19:50 106-46-72.0 4 Dichlorodifluoromethane ND ug/L 04/20/21 19:50 75-71-82.0 4 1,1-Dichloroethane ND ug/L 04/20/21 19:50 75-34-32.0 4 1,2-Dichloroethane ND ug/L 04/20/21 19:50 107-06-22.0 4 1,1-Dichloroethene ND ug/L 04/20/21 19:50 75-35-42.0 4 cis-1,2-Dichloroethene ND ug/L 04/20/21 19:50 156-59-22.0 4 trans-1,2-Dichloroethene ND ug/L 04/20/21 19:50 156-60-52.0 4 1,2-Dichloropropane ND ug/L 04/20/21 19:50 78-87-52.0 4 1,3-Dichloropropane ND ug/L 04/20/21 19:50 142-28-92.0 4 2,2-Dichloropropane ND ug/L 04/20/21 19:50 594-20-72.0 4 1,1-Dichloropropene ND ug/L 04/20/21 19:50 563-58-62.0 4 cis-1,3-Dichloropropene ND ug/L 04/20/21 19:50 10061-01-52.0 4 trans-1,3-Dichloropropene ND ug/L 04/20/21 19:50 10061-02-62.0 4 Diisopropyl ether 14.0 ug/L 04/20/21 19:50 108-20-32.0 4 Ethylbenzene 75.4 ug/L 04/20/21 19:50 100-41-42.0 4 Hexachloro-1,3-butadiene ND ug/L 04/20/21 19:50 87-68-38.0 4 Isopropylbenzene (Cumene)6.8 ug/L 04/20/21 19:50 98-82-82.0 4 Methylene Chloride ND ug/L 04/20/21 19:50 75-09-28.0 4 Methyl-tert-butyl ether 7.0 ug/L 04/20/21 19:50 1634-04-42.0 4 Naphthalene 61.1 ug/L 04/20/21 19:50 91-20-38.0 4 n-Propylbenzene ND ug/L 04/20/21 19:50 103-65-12.0 4 Styrene 7.1 ug/L 04/20/21 19:50 100-42-52.0 4 1,1,1,2-Tetrachloroethane ND ug/L 04/20/21 19:50 630-20-62.0 4 1,1,2,2-Tetrachloroethane ND ug/L 04/20/21 19:50 79-34-52.0 4 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 11 of 34 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92533561 CEMEX 11.990018.01 Sample: MW-13 Lab ID: 92533561004 Collected: 04/14/21 10:03 Received: 04/15/21 10:18 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Tetrachloroethene ND ug/L 04/20/21 19:50 127-18-42.0 4 Toluene 373 ug/L 04/20/21 19:50 108-88-32.0 4 1,2,3-Trichlorobenzene ND ug/L 04/20/21 19:50 87-61-68.0 4 1,2,4-Trichlorobenzene ND ug/L 04/20/21 19:50 120-82-18.0 4 1,1,1-Trichloroethane ND ug/L 04/20/21 19:50 71-55-62.0 4 1,1,2-Trichloroethane ND ug/L 04/20/21 19:50 79-00-52.0 4 Trichloroethene ND ug/L 04/20/21 19:50 79-01-62.0 4 Trichlorofluoromethane ND ug/L 04/20/21 19:50 75-69-44.0 4 1,2,3-Trichloropropane ND ug/L 04/20/21 19:50 96-18-42.0 4 1,2,4-Trimethylbenzene 430 ug/L 04/20/21 19:50 95-63-62.0 4 1,3,5-Trimethylbenzene ND ug/L 04/20/21 19:50 108-67-8 M12.0 4 Vinyl chloride ND ug/L 04/20/21 19:50 75-01-44.0 4 m&p-Xylene 679 ug/L 04/20/21 19:50 179601-23-14.0 4 o-Xylene 404 ug/L 04/20/21 19:50 95-47-62.0 4 Surrogates 1,2-Dichloroethane-d4 (S)95 %04/20/21 19:50 17060-07-070-130 4 4-Bromofluorobenzene (S)98 %04/20/21 19:50 460-00-470-130 4 Toluene-d8 (S)100 %04/20/21 19:50 2037-26-570-130 4 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 12 of 34 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92533561 CEMEX 11.990018.01 Sample: MW-14 Lab ID: 92533561005 Collected: 04/14/21 10:59 Received: 04/15/21 10:18 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 04/16/21 13:46 71-43-20.50 1 Bromobenzene ND ug/L 04/16/21 13:46 108-86-10.50 1 Bromochloromethane ND ug/L 04/16/21 13:46 74-97-50.50 1 Bromodichloromethane ND ug/L 04/16/21 13:46 75-27-40.50 1 Bromoform ND ug/L 04/16/21 13:46 75-25-20.50 1 Bromomethane ND ug/L 04/16/21 13:46 74-83-95.0 1 n-Butylbenzene ND ug/L 04/16/21 13:46 104-51-80.50 1 sec-Butylbenzene ND ug/L 04/16/21 13:46 135-98-80.50 1 tert-Butylbenzene ND ug/L 04/16/21 13:46 98-06-60.50 1 Carbon tetrachloride ND ug/L 04/16/21 13:46 56-23-50.50 1 Chlorobenzene ND ug/L 04/16/21 13:46 108-90-70.50 1 Chloroethane ND ug/L 04/16/21 13:46 75-00-31.0 1 Chloroform ND ug/L 04/16/21 13:46 67-66-30.50 1 Chloromethane ND ug/L 04/16/21 13:46 74-87-31.0 1 2-Chlorotoluene ND ug/L 04/16/21 13:46 95-49-80.50 1 4-Chlorotoluene ND ug/L 04/16/21 13:46 106-43-40.50 1 1,2-Dibromo-3-chloropropane ND ug/L 04/16/21 13:46 96-12-81.0 1 Dibromochloromethane ND ug/L 04/16/21 13:46 124-48-10.50 1 1,2-Dibromoethane (EDB)ND ug/L 04/16/21 13:46 106-93-40.50 1 Dibromomethane ND ug/L 04/16/21 13:46 74-95-30.50 1 1,2-Dichlorobenzene ND ug/L 04/16/21 13:46 95-50-10.50 1 1,3-Dichlorobenzene ND ug/L 04/16/21 13:46 541-73-10.50 1 1,4-Dichlorobenzene ND ug/L 04/16/21 13:46 106-46-70.50 1 Dichlorodifluoromethane ND ug/L 04/16/21 13:46 75-71-80.50 1 1,1-Dichloroethane ND ug/L 04/16/21 13:46 75-34-30.50 1 1,2-Dichloroethane ND ug/L 04/16/21 13:46 107-06-20.50 1 1,1-Dichloroethene ND ug/L 04/16/21 13:46 75-35-40.50 1 cis-1,2-Dichloroethene ND ug/L 04/16/21 13:46 156-59-20.50 1 trans-1,2-Dichloroethene ND ug/L 04/16/21 13:46 156-60-50.50 1 1,2-Dichloropropane ND ug/L 04/16/21 13:46 78-87-50.50 1 1,3-Dichloropropane ND ug/L 04/16/21 13:46 142-28-90.50 1 2,2-Dichloropropane ND ug/L 04/16/21 13:46 594-20-70.50 1 1,1-Dichloropropene ND ug/L 04/16/21 13:46 563-58-60.50 1 cis-1,3-Dichloropropene ND ug/L 04/16/21 13:46 10061-01-50.50 1 trans-1,3-Dichloropropene ND ug/L 04/16/21 13:46 10061-02-60.50 1 Diisopropyl ether ND ug/L 04/16/21 13:46 108-20-30.50 1 Ethylbenzene ND ug/L 04/16/21 13:46 100-41-40.50 1 Hexachloro-1,3-butadiene ND ug/L 04/16/21 13:46 87-68-32.0 1 Isopropylbenzene (Cumene)ND ug/L 04/16/21 13:46 98-82-80.50 1 Methylene Chloride ND ug/L 04/16/21 13:46 75-09-22.0 1 Methyl-tert-butyl ether ND ug/L 04/16/21 13:46 1634-04-40.50 1 Naphthalene ND ug/L 04/16/21 13:46 91-20-32.0 1 n-Propylbenzene ND ug/L 04/16/21 13:46 103-65-10.50 1 Styrene ND ug/L 04/16/21 13:46 100-42-50.50 1 1,1,1,2-Tetrachloroethane ND ug/L 04/16/21 13:46 630-20-60.50 1 1,1,2,2-Tetrachloroethane ND ug/L 04/16/21 13:46 79-34-50.50 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 13 of 34 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92533561 CEMEX 11.990018.01 Sample: MW-14 Lab ID: 92533561005 Collected: 04/14/21 10:59 Received: 04/15/21 10:18 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Tetrachloroethene ND ug/L 04/16/21 13:46 127-18-40.50 1 Toluene ND ug/L 04/16/21 13:46 108-88-30.50 1 1,2,3-Trichlorobenzene ND ug/L 04/16/21 13:46 87-61-62.0 1 1,2,4-Trichlorobenzene ND ug/L 04/16/21 13:46 120-82-12.0 1 1,1,1-Trichloroethane ND ug/L 04/16/21 13:46 71-55-60.50 1 1,1,2-Trichloroethane ND ug/L 04/16/21 13:46 79-00-50.50 1 Trichloroethene ND ug/L 04/16/21 13:46 79-01-60.50 1 Trichlorofluoromethane ND ug/L 04/16/21 13:46 75-69-41.0 1 1,2,3-Trichloropropane ND ug/L 04/16/21 13:46 96-18-40.50 1 1,2,4-Trimethylbenzene ND ug/L 04/16/21 13:46 95-63-60.50 1 1,3,5-Trimethylbenzene ND ug/L 04/16/21 13:46 108-67-80.50 1 Vinyl chloride ND ug/L 04/16/21 13:46 75-01-41.0 1 m&p-Xylene ND ug/L 04/16/21 13:46 179601-23-11.0 1 o-Xylene ND ug/L 04/16/21 13:46 95-47-60.50 1 Surrogates 1,2-Dichloroethane-d4 (S)95 %04/16/21 13:46 17060-07-070-130 1 4-Bromofluorobenzene (S)90 %04/16/21 13:46 460-00-470-130 1 Toluene-d8 (S)99 %04/16/21 13:46 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: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 14 of 34 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92533561 CEMEX 11.990018.01 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: 614266 SM 6200B SM 6200B 6200B MSV Laboratory:Pace Analytical Services - Charlotte Associated Lab Samples: 92533561001, 92533561003, 92533561005 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK: 3232945 Associated Lab Samples:92533561001, 92533561003, 92533561005 Matrix: Water Analyzed 1,1,1,2-Tetrachloroethane ug/L ND 0.50 04/16/21 12:16 1,1,1-Trichloroethane ug/L ND 0.50 04/16/21 12:16 1,1,2,2-Tetrachloroethane ug/L ND 0.50 04/16/21 12:16 1,1,2-Trichloroethane ug/L ND 0.50 04/16/21 12:16 1,1-Dichloroethane ug/L ND 0.50 04/16/21 12:16 1,1-Dichloroethene ug/L ND 0.50 04/16/21 12:16 1,1-Dichloropropene ug/L ND 0.50 04/16/21 12:16 1,2,3-Trichlorobenzene ug/L ND 2.0 04/16/21 12:16 1,2,3-Trichloropropane ug/L ND 0.50 04/16/21 12:16 1,2,4-Trichlorobenzene ug/L ND 2.0 04/16/21 12:16 1,2,4-Trimethylbenzene ug/L ND 0.50 04/16/21 12:16 1,2-Dibromo-3-chloropropane ug/L ND 1.0 04/16/21 12:16 1,2-Dibromoethane (EDB)ug/L ND 0.50 04/16/21 12:16 1,2-Dichlorobenzene ug/L ND 0.50 04/16/21 12:16 1,2-Dichloroethane ug/L ND 0.50 04/16/21 12:16 1,2-Dichloropropane ug/L ND 0.50 04/16/21 12:16 1,3,5-Trimethylbenzene ug/L ND 0.50 04/16/21 12:16 1,3-Dichlorobenzene ug/L ND 0.50 04/16/21 12:16 1,3-Dichloropropane ug/L ND 0.50 04/16/21 12:16 1,4-Dichlorobenzene ug/L ND 0.50 04/16/21 12:16 2,2-Dichloropropane ug/L ND 0.50 04/16/21 12:16 2-Chlorotoluene ug/L ND 0.50 04/16/21 12:16 4-Chlorotoluene ug/L ND 0.50 04/16/21 12:16 Benzene ug/L ND 0.50 04/16/21 12:16 Bromobenzene ug/L ND 0.50 04/16/21 12:16 Bromochloromethane ug/L ND 0.50 04/16/21 12:16 Bromodichloromethane ug/L ND 0.50 04/16/21 12:16 Bromoform ug/L ND 0.50 04/16/21 12:16 Bromomethane ug/L ND 5.0 04/16/21 12:16 Carbon tetrachloride ug/L ND 0.50 04/16/21 12:16 Chlorobenzene ug/L ND 0.50 04/16/21 12:16 Chloroethane ug/L ND 1.0 04/16/21 12:16 Chloroform ug/L ND 0.50 04/16/21 12:16 Chloromethane ug/L ND 1.0 04/16/21 12:16 cis-1,2-Dichloroethene ug/L ND 0.50 04/16/21 12:16 cis-1,3-Dichloropropene ug/L ND 0.50 04/16/21 12:16 Dibromochloromethane ug/L ND 0.50 04/16/21 12:16 Dibromomethane ug/L ND 0.50 04/16/21 12:16 Dichlorodifluoromethane ug/L ND 0.50 04/16/21 12:16 Diisopropyl ether ug/L ND 0.50 04/16/21 12:16 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 15 of 34 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92533561 CEMEX 11.990018.01 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: 3232945 Associated Lab Samples:92533561001, 92533561003, 92533561005 Matrix: Water Analyzed Ethylbenzene ug/L ND 0.50 04/16/21 12:16 Hexachloro-1,3-butadiene ug/L ND 2.0 04/16/21 12:16 Isopropylbenzene (Cumene)ug/L ND 0.50 04/16/21 12:16 m&p-Xylene ug/L ND 1.0 04/16/21 12:16 Methyl-tert-butyl ether ug/L ND 0.50 04/16/21 12:16 Methylene Chloride ug/L ND 2.0 04/16/21 12:16 n-Butylbenzene ug/L ND 0.50 04/16/21 12:16 n-Propylbenzene ug/L ND 0.50 04/16/21 12:16 Naphthalene ug/L ND 2.0 04/16/21 12:16 o-Xylene ug/L ND 0.50 04/16/21 12:16 sec-Butylbenzene ug/L ND 0.50 04/16/21 12:16 Styrene ug/L ND 0.50 04/16/21 12:16 tert-Butylbenzene ug/L ND 0.50 04/16/21 12:16 Tetrachloroethene ug/L ND 0.50 04/16/21 12:16 Toluene ug/L ND 0.50 04/16/21 12:16 trans-1,2-Dichloroethene ug/L ND 0.50 04/16/21 12:16 trans-1,3-Dichloropropene ug/L ND 0.50 04/16/21 12:16 Trichloroethene ug/L ND 0.50 04/16/21 12:16 Trichlorofluoromethane ug/L ND 1.0 04/16/21 12:16 Vinyl chloride ug/L ND 1.0 04/16/21 12:16 1,2-Dichloroethane-d4 (S)%96 70-130 04/16/21 12:16 4-Bromofluorobenzene (S)%91 70-130 04/16/21 12:16 Toluene-d8 (S)%99 70-130 04/16/21 12:16 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 3232946LABORATORY CONTROL SAMPLE: LCSSpike 1,1,1,2-Tetrachloroethane ug/L 50.550 101 60-140 1,1,1-Trichloroethane ug/L 49.950 100 60-140 1,1,2,2-Tetrachloroethane ug/L 49.250 98 60-140 1,1,2-Trichloroethane ug/L 48.250 96 60-140 1,1-Dichloroethane ug/L 52.050 104 60-140 1,1-Dichloroethene ug/L 53.850 108 60-140 1,1-Dichloropropene ug/L 50.650 101 60-140 1,2,3-Trichlorobenzene ug/L 43.350 87 60-140 1,2,3-Trichloropropane ug/L 48.150 96 60-140 1,2,4-Trichlorobenzene ug/L 44.450 89 60-140 1,2,4-Trimethylbenzene ug/L 46.950 94 60-140 1,2-Dibromo-3-chloropropane ug/L 51.050 102 60-140 1,2-Dibromoethane (EDB)ug/L 51.350 103 60-140 1,2-Dichlorobenzene ug/L 46.050 92 60-140 1,2-Dichloroethane ug/L 44.050 88 60-140 1,2-Dichloropropane ug/L 50.450 101 60-140 1,3,5-Trimethylbenzene ug/L 48.350 97 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: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 16 of 34 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92533561 CEMEX 11.990018.01 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. 3232946LABORATORY CONTROL SAMPLE: LCSSpike 1,3-Dichlorobenzene ug/L 46.950 94 60-140 1,3-Dichloropropane ug/L 52.150 104 60-140 1,4-Dichlorobenzene ug/L 47.850 96 60-140 2,2-Dichloropropane ug/L 52.050 104 60-140 2-Chlorotoluene ug/L 48.150 96 60-140 4-Chlorotoluene ug/L 47.450 95 60-140 Benzene ug/L 49.750 99 60-140 Bromobenzene ug/L 51.350 103 60-140 Bromochloromethane ug/L 50.950 102 60-140 Bromodichloromethane ug/L 49.050 98 60-140 Bromoform ug/L 52.550 105 60-140 Bromomethane ug/L 55.750 111 60-140 Carbon tetrachloride ug/L 49.450 99 60-140 Chlorobenzene ug/L 50.650 101 60-140 Chloroethane ug/L 48.150 96 60-140 Chloroform ug/L 43.550 87 60-140 Chloromethane ug/L 46.550 93 60-140 cis-1,2-Dichloroethene ug/L 50.950 102 60-140 cis-1,3-Dichloropropene ug/L 50.850 102 60-140 Dibromochloromethane ug/L 54.150 108 60-140 Dibromomethane ug/L 50.150 100 60-140 Dichlorodifluoromethane ug/L 44.650 89 60-140 Diisopropyl ether ug/L 46.150 92 60-140 Ethylbenzene ug/L 48.750 97 60-140 Hexachloro-1,3-butadiene ug/L 45.950 92 60-140 Isopropylbenzene (Cumene)ug/L 48.150 96 60-140 m&p-Xylene ug/L 99.1100 99 60-140 Methyl-tert-butyl ether ug/L 46.950 94 60-140 Methylene Chloride ug/L 46.050 92 60-140 n-Butylbenzene ug/L 46.750 93 60-140 n-Propylbenzene ug/L 48.350 97 60-140 Naphthalene ug/L 42.750 85 60-140 o-Xylene ug/L 47.950 96 60-140 sec-Butylbenzene ug/L 46.950 94 60-140 Styrene ug/L 50.750 101 60-140 tert-Butylbenzene ug/L 40.350 81 60-140 Tetrachloroethene ug/L 49.950 100 60-140 Toluene ug/L 47.950 96 60-140 trans-1,2-Dichloroethene ug/L 51.650 103 60-140 trans-1,3-Dichloropropene ug/L 50.250 100 60-140 Trichloroethene ug/L 49.450 99 60-140 Trichlorofluoromethane ug/L 47.750 95 60-140 Vinyl chloride ug/L 46.950 94 60-140 1,2-Dichloroethane-d4 (S)%94 70-130 4-Bromofluorobenzene (S)%99 70-130 Toluene-d8 (S)%97 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: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 17 of 34 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92533561 CEMEX 11.990018.01 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. 3232947MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92532952009 3232948 MSD Result MSD % Rec RPD MSDMS Spike Conc. 1,1,1,2-Tetrachloroethane ug/L 5000 93 60-14097 45000ND4630 4840 1,1,1-Trichloroethane ug/L 5000 93 60-140100 75000ND4630 4980 1,1,2,2-Tetrachloroethane ug/L 5000 92 60-14096 55000ND4590 4810 1,1,2-Trichloroethane ug/L 5000 88 60-14097 95000ND4400 4830 1,1-Dichloroethane ug/L 5000 95 60-140102 75000ND4740 5100 1,1-Dichloroethene ug/L 5000 99 60-140106 75000ND4950 5320 1,1-Dichloropropene ug/L 5000 92 60-140100 85000ND4590 4980 1,2,3-Trichlorobenzene ug/L 5000 77 60-14080 55000ND3830 4010 1,2,3-Trichloropropane ug/L 5000 92 60-14094 25000ND4600 4700 1,2,4-Trichlorobenzene ug/L 5000 79 60-14080 15000ND3950 4010 1,2,4-Trimethylbenzene ug/L 5000 97 60-14093 3500014606300 6110 1,2-Dibromo-3-chloropropane ug/L 5000 92 60-14094 25000ND4590 4680 1,2-Dibromoethane (EDB)ug/L 5000 96 60-140101 55000ND4780 5030 1,2-Dichlorobenzene ug/L 5000 86 60-14086 05000ND4290 4290 1,2-Dichloroethane ug/L 5000 80 60-14086 75000ND4110 4430 1,2-Dichloropropane ug/L 5000 92 60-140100 85000ND4610 4980 1,3,5-Trimethylbenzene ug/L 5000 99 60-14099 05000ND4940 4930 1,3-Dichlorobenzene ug/L 5000 86 60-14087 15000ND4310 4340 1,3-Dichloropropane ug/L 5000 98 60-140102 45000ND4890 5080 1,4-Dichlorobenzene ug/L 5000 88 60-14089 25000ND4380 4460 2,2-Dichloropropane ug/L 5000 86 60-14094 95000ND4290 4710 2-Chlorotoluene ug/L 5000 92 60-14091 15000ND4600 4560 4-Chlorotoluene ug/L 5000 88 60-14088 05000ND4390 4400 Benzene ug/L 5000 98 60-140108 55000600010900 11400 Bromobenzene ug/L 5000 97 60-14097 05000ND4830 4840 Bromochloromethane ug/L 5000 91 60-14098 75000ND4550 4890 Bromodichloromethane ug/L 5000 87 60-14094 85000ND4350 4720 Bromoform ug/L 5000 90 60-14094 45000ND4520 4690 Bromomethane ug/L 5000 104 60-140115 105000ND5200 5750 Carbon tetrachloride ug/L 5000 91 60-14097 75000ND4530 4840 Chlorobenzene ug/L 5000 94 60-14098 45000ND4690 4900 Chloroethane ug/L 5000 110 60-140115 55000ND5500 5770 Chloroform ug/L 5000 81 60-14086 65000ND4040 4280 Chloromethane ug/L 5000 86 60-14093 85000ND4320 4660 cis-1,2-Dichloroethene ug/L 5000 94 60-140101 85000ND4680 5070 cis-1,3-Dichloropropene ug/L 5000 89 60-14097 95000ND4450 4860 Dibromochloromethane ug/L 5000 96 60-140101 45000ND4820 5040 Dibromomethane ug/L 5000 92 60-14098 65000ND4600 4910 Dichlorodifluoromethane ug/L 5000 82 60-14089 75000ND4120 4440 Diisopropyl ether ug/L 5000 83 60-14089 650003944550 4850 Ethylbenzene ug/L 5000 94 60-14095 1500013306010 6090 Hexachloro-1,3-butadiene ug/L 5000 84 60-14086 25000ND4220 4290 Isopropylbenzene (Cumene) ug/L 5000 91 60-14094 35000ND4560 4710 m&p-Xylene ug/L 10000 97 60-14099 110000478014500 14700 Methyl-tert-butyl ether ug/L 5000 83 60-140109 350003240036600 37900 Methylene Chloride ug/L 5000 89 60-14094 65000ND4440 4720 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 18 of 34 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92533561 CEMEX 11.990018.01 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. 3232947MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92532952009 3232948 MSD Result MSD % Rec RPD MSDMS Spike Conc. n-Butylbenzene ug/L 5000 89 60-14086 35000ND4440 4320 n-Propylbenzene ug/L 5000 95 60-14094 15000ND4730 4700 Naphthalene ug/L 5000 91 60-14085 650005515100 4810 o-Xylene ug/L 5000 92 60-14093 150007915400 5450 sec-Butylbenzene ug/L 5000 89 60-14089 05000ND4440 4450 Styrene ug/L 5000 91 60-14095 45000ND4560 4740 tert-Butylbenzene ug/L 5000 76 60-14077 15000ND3820 3860 Tetrachloroethene ug/L 5000 94 60-14096 35000ND4680 4820 Toluene ug/L 5000 90 60-14097 650009015410 5730 trans-1,2-Dichloroethene ug/L 5000 95 60-140102 75000ND4770 5100 trans-1,3-Dichloropropene ug/L 5000 87 60-14095 95000ND4360 4750 Trichloroethene ug/L 5000 92 60-14098 65000ND4600 4890 Trichlorofluoromethane ug/L 5000 102 60-140108 65000ND5080 5420 Vinyl chloride ug/L 5000 88 60-14095 85000ND4410 4760 1,2-Dichloroethane-d4 (S)%100 70-130104 4-Bromofluorobenzene (S)%97 70-13099 Toluene-d8 (S)%96 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: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 19 of 34 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92533561 CEMEX 11.990018.01 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: 614877 SM 6200B SM 6200B 6200B MSV Laboratory:Pace Analytical Services - Charlotte Associated Lab Samples: 92533561004 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK: 3235745 Associated Lab Samples:92533561004 Matrix: Water Analyzed 1,1,1,2-Tetrachloroethane ug/L ND 0.50 04/20/21 12:56 1,1,1-Trichloroethane ug/L ND 0.50 04/20/21 12:56 1,1,2,2-Tetrachloroethane ug/L ND 0.50 04/20/21 12:56 1,1,2-Trichloroethane ug/L ND 0.50 04/20/21 12:56 1,1-Dichloroethane ug/L ND 0.50 04/20/21 12:56 1,1-Dichloroethene ug/L ND 0.50 04/20/21 12:56 1,1-Dichloropropene ug/L ND 0.50 04/20/21 12:56 1,2,3-Trichlorobenzene ug/L ND 2.0 04/20/21 12:56 1,2,3-Trichloropropane ug/L ND 0.50 04/20/21 12:56 1,2,4-Trichlorobenzene ug/L ND 2.0 04/20/21 12:56 1,2,4-Trimethylbenzene ug/L ND 0.50 04/20/21 12:56 1,2-Dibromo-3-chloropropane ug/L ND 1.0 04/20/21 12:56 1,2-Dibromoethane (EDB)ug/L ND 0.50 04/20/21 12:56 1,2-Dichlorobenzene ug/L ND 0.50 04/20/21 12:56 1,2-Dichloroethane ug/L ND 0.50 04/20/21 12:56 1,2-Dichloropropane ug/L ND 0.50 04/20/21 12:56 1,3,5-Trimethylbenzene ug/L ND 0.50 04/20/21 12:56 1,3-Dichlorobenzene ug/L ND 0.50 04/20/21 12:56 1,3-Dichloropropane ug/L ND 0.50 04/20/21 12:56 1,4-Dichlorobenzene ug/L ND 0.50 04/20/21 12:56 2,2-Dichloropropane ug/L ND 0.50 04/20/21 12:56 2-Chlorotoluene ug/L ND 0.50 04/20/21 12:56 4-Chlorotoluene ug/L ND 0.50 04/20/21 12:56 Benzene ug/L ND 0.50 04/20/21 12:56 Bromobenzene ug/L ND 0.50 04/20/21 12:56 Bromochloromethane ug/L ND 0.50 04/20/21 12:56 Bromodichloromethane ug/L ND 0.50 04/20/21 12:56 Bromoform ug/L ND 0.50 04/20/21 12:56 Bromomethane ug/L ND 5.0 04/20/21 12:56 Carbon tetrachloride ug/L ND 0.50 04/20/21 12:56 Chlorobenzene ug/L ND 0.50 04/20/21 12:56 Chloroethane ug/L ND 1.0 04/20/21 12:56 Chloroform ug/L ND 0.50 04/20/21 12:56 Chloromethane ug/L ND 1.0 04/20/21 12:56 cis-1,2-Dichloroethene ug/L ND 0.50 04/20/21 12:56 cis-1,3-Dichloropropene ug/L ND 0.50 04/20/21 12:56 Dibromochloromethane ug/L ND 0.50 04/20/21 12:56 Dibromomethane ug/L ND 0.50 04/20/21 12:56 Dichlorodifluoromethane ug/L ND 0.50 04/20/21 12:56 Diisopropyl ether ug/L ND 0.50 04/20/21 12:56 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 20 of 34 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92533561 CEMEX 11.990018.01 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: 3235745 Associated Lab Samples:92533561004 Matrix: Water Analyzed Ethylbenzene ug/L ND 0.50 04/20/21 12:56 Hexachloro-1,3-butadiene ug/L ND 2.0 04/20/21 12:56 Isopropylbenzene (Cumene)ug/L ND 0.50 04/20/21 12:56 m&p-Xylene ug/L ND 1.0 04/20/21 12:56 Methyl-tert-butyl ether ug/L ND 0.50 04/20/21 12:56 Methylene Chloride ug/L ND 2.0 04/20/21 12:56 n-Butylbenzene ug/L ND 0.50 04/20/21 12:56 n-Propylbenzene ug/L ND 0.50 04/20/21 12:56 Naphthalene ug/L ND 2.0 04/20/21 12:56 o-Xylene ug/L ND 0.50 04/20/21 12:56 sec-Butylbenzene ug/L ND 0.50 04/20/21 12:56 Styrene ug/L ND 0.50 04/20/21 12:56 tert-Butylbenzene ug/L ND 0.50 04/20/21 12:56 Tetrachloroethene ug/L ND 0.50 04/20/21 12:56 Toluene ug/L ND 0.50 04/20/21 12:56 trans-1,2-Dichloroethene ug/L ND 0.50 04/20/21 12:56 trans-1,3-Dichloropropene ug/L ND 0.50 04/20/21 12:56 Trichloroethene ug/L ND 0.50 04/20/21 12:56 Trichlorofluoromethane ug/L ND 1.0 04/20/21 12:56 Vinyl chloride ug/L ND 1.0 04/20/21 12:56 1,2-Dichloroethane-d4 (S)%97 70-130 04/20/21 12:56 4-Bromofluorobenzene (S)%92 70-130 04/20/21 12:56 Toluene-d8 (S)%100 70-130 04/20/21 12:56 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 3235746LABORATORY CONTROL SAMPLE: LCSSpike 1,1,1,2-Tetrachloroethane ug/L 53.450 107 60-140 1,1,1-Trichloroethane ug/L 52.950 106 60-140 1,1,2,2-Tetrachloroethane ug/L 53.450 107 60-140 1,1,2-Trichloroethane ug/L 52.750 105 60-140 1,1-Dichloroethane ug/L 54.750 109 60-140 1,1-Dichloroethene ug/L 57.150 114 60-140 1,1-Dichloropropene ug/L 53.350 107 60-140 1,2,3-Trichlorobenzene ug/L 47.150 94 60-140 1,2,3-Trichloropropane ug/L 53.450 107 60-140 1,2,4-Trichlorobenzene ug/L 47.250 94 60-140 1,2,4-Trimethylbenzene ug/L 47.950 96 60-140 1,2-Dibromo-3-chloropropane ug/L 56.150 112 60-140 1,2-Dibromoethane (EDB)ug/L 55.450 111 60-140 1,2-Dichlorobenzene ug/L 47.750 95 60-140 1,2-Dichloroethane ug/L 47.450 95 60-140 1,2-Dichloropropane ug/L 53.550 107 60-140 1,3,5-Trimethylbenzene ug/L 49.550 99 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: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 21 of 34 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92533561 CEMEX 11.990018.01 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. 3235746LABORATORY CONTROL SAMPLE: LCSSpike 1,3-Dichlorobenzene ug/L 47.950 96 60-140 1,3-Dichloropropane ug/L 55.950 112 60-140 1,4-Dichlorobenzene ug/L 48.550 97 60-140 2,2-Dichloropropane ug/L 52.750 105 60-140 2-Chlorotoluene ug/L 49.550 99 60-140 4-Chlorotoluene ug/L 48.850 98 60-140 Benzene ug/L 52.550 105 60-140 Bromobenzene ug/L 52.850 106 60-140 Bromochloromethane ug/L 53.450 107 60-140 Bromodichloromethane ug/L 52.550 105 60-140 Bromoform ug/L 56.650 113 60-140 Bromomethane ug/L 56.650 113 60-140 Carbon tetrachloride ug/L 52.350 105 60-140 Chlorobenzene ug/L 52.650 105 60-140 Chloroethane ug/L 45.650 91 60-140 Chloroform ug/L 46.050 92 60-140 Chloromethane ug/L 50.750 101 60-140 cis-1,2-Dichloroethene ug/L 53.850 108 60-140 cis-1,3-Dichloropropene ug/L 53.950 108 60-140 Dibromochloromethane ug/L 58.050 116 60-140 Dibromomethane ug/L 53.250 106 60-140 Dichlorodifluoromethane ug/L 45.450 91 60-140 Diisopropyl ether ug/L 48.950 98 60-140 Ethylbenzene ug/L 50.950 102 60-140 Hexachloro-1,3-butadiene ug/L 46.450 93 60-140 Isopropylbenzene (Cumene)ug/L 50.550 101 60-140 m&p-Xylene ug/L 103100 103 60-140 Methyl-tert-butyl ether ug/L 50.550 101 60-140 Methylene Chloride ug/L 49.650 99 60-140 n-Butylbenzene ug/L 47.250 94 60-140 n-Propylbenzene ug/L 48.950 98 60-140 Naphthalene ug/L 48.050 96 60-140 o-Xylene ug/L 50.650 101 60-140 sec-Butylbenzene ug/L 47.850 96 60-140 Styrene ug/L 53.650 107 60-140 tert-Butylbenzene ug/L 41.450 83 60-140 Tetrachloroethene ug/L 52.450 105 60-140 Toluene ug/L 50.450 101 60-140 trans-1,2-Dichloroethene ug/L 54.150 108 60-140 trans-1,3-Dichloropropene ug/L 53.550 107 60-140 Trichloroethene ug/L 51.950 104 60-140 Trichlorofluoromethane ug/L 46.050 92 60-140 Vinyl chloride ug/L 50.450 101 60-140 1,2-Dichloroethane-d4 (S)%96 70-130 4-Bromofluorobenzene (S)%100 70-130 Toluene-d8 (S)%97 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: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 22 of 34 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92533561 CEMEX 11.990018.01 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. 3235747MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92533561004 3235748 MSD Result MSD % Rec RPD MSDMS Spike Conc. 1,1,1,2-Tetrachloroethane ug/L 80 116 60-140114 180ND92.6 91.4 1,1,1-Trichloroethane ug/L 80 115 60-140117 280ND91.8 93.2 1,1,2,2-Tetrachloroethane ug/L 80 119 60-140119 080ND94.9 95.1 1,1,2-Trichloroethane ug/L 80 112 60-140111 080ND89.5 89.1 1,1-Dichloroethane ug/L 80 117 60-140117 180ND93.3 93.9 1,1-Dichloroethene ug/L 80 118 60-140124 480ND94.6 98.8 1,1-Dichloropropene ug/L 80 113 60-140116 380ND90.1 92.5 1,2,3-Trichlorobenzene ug/L 80 91 60-14099 980ND73.0 79.6 1,2,3-Trichloropropane ug/L 80 120 60-140117 380ND95.9 93.4 1,2,4-Trichlorobenzene ug/L 80 95 60-140100 480ND76.2 79.6 1,2,4-Trimethylbenzene ug/L 80 109 60-140102 180430518 512 1,2-Dibromo-3-chloropropane ug/L 80 116 60-140117 080ND93.0 93.4 1,2-Dibromoethane (EDB)ug/L 80 119 60-140117 280ND95.3 93.7 1,2-Dichlorobenzene ug/L 80 103 60-140102 180ND82.6 81.5 1,2-Dichloroethane ug/L 80 101 60-140101 080ND80.5 80.7 1,2-Dichloropropane ug/L 80 117 60-140112 480ND93.5 89.4 1,3,5-Trimethylbenzene ug/L M18028460-140284 080ND228 227 1,3-Dichlorobenzene ug/L 80 105 60-140104 180ND83.8 83.0 1,3-Dichloropropane ug/L 80 118 60-140120 180ND94.7 96.0 1,4-Dichlorobenzene ug/L 80 105 60-140104 180ND83.9 83.1 2,2-Dichloropropane ug/L 80 99 60-140100 180ND79.3 79.8 2-Chlorotoluene ug/L 80 133 60-140120 1080ND106 95.7 4-Chlorotoluene ug/L 80 105 60-140104 180ND83.9 82.8 Benzene ug/L 80 111 60-140115 28042.0 131 134 Bromobenzene ug/L 80 117 60-140115 280ND93.8 92.0 Bromochloromethane ug/L 80 115 60-140117 180ND92.3 93.5 Bromodichloromethane ug/L 80 110 60-140107 380ND88.3 85.4 Bromoform ug/L 80 116 60-140114 180ND92.4 91.6 Bromomethane ug/L 80 128 60-140136 680ND102 109 Carbon tetrachloride ug/L 80 113 60-140113 180ND90.7 90.1 Chlorobenzene ug/L 80 116 60-140115 180ND92.5 92.0 Chloroethane ug/L 80 137 60-140137 080ND110 110 Chloroform ug/L 80 99 60-14098 180ND78.9 78.3 Chloromethane ug/L 80 90 60-140100 1180ND72.1 80.3 cis-1,2-Dichloroethene ug/L 80 114 60-140115 180ND90.8 92.1 cis-1,3-Dichloropropene ug/L 80 106 60-140106 080ND85.1 85.0 Dibromochloromethane ug/L 80 121 60-140120 180ND96.9 96.2 Dibromomethane ug/L 80 115 60-140112 280ND92.1 89.8 Dichlorodifluoromethane ug/L 80 76 60-140100 2780ND60.8 79.7 Diisopropyl ether ug/L 80 101 60-140104 28014.0 94.9 97.0 Ethylbenzene ug/L 80 115 60-140113 18075.4 167 166 Hexachloro-1,3-butadiene ug/L 80 99 60-140104 580ND79.3 83.4 Isopropylbenzene (Cumene) ug/L 80 113 60-140111 2806.8 97.0 95.3 m&p-Xylene ug/L 160 115 60-140111 1160679864 857 Methyl-tert-butyl ether ug/L 80 101 60-140104 3807.0 87.7 89.9 Methylene Chloride ug/L 80 111 60-140113 280ND88.5 90.5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 23 of 34 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92533561 CEMEX 11.990018.01 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. 3235747MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92533561004 3235748 MSD Result MSD % Rec RPD MSDMS Spike Conc. n-Butylbenzene ug/L 80 118 60-140120 280ND94.3 95.9 n-Propylbenzene ug/L 80 124 60-140124 080ND99.3 99.1 Naphthalene ug/L 80 93 60-140109 98061.1 136 148 o-Xylene ug/L 80 111 60-140104 180404493 487 sec-Butylbenzene ug/L 80 105 60-140104 080ND83.8 83.6 Styrene ug/L 80 114 60-140114 0807.1 98.5 98.4 tert-Butylbenzene ug/L 80 95 60-14094 180ND76.1 75.4 Tetrachloroethene ug/L 80 115 60-140117 280ND91.7 93.2 Toluene ug/L 80 95 60-14084 280373449 441 trans-1,2-Dichloroethene ug/L 80 113 60-140116 380ND90.0 92.8 trans-1,3-Dichloropropene ug/L 80 109 60-140107 280ND87.4 86.0 Trichloroethene ug/L 80 115 60-140114 180ND92.2 91.5 Trichlorofluoromethane ug/L 80 129 60-140127 280ND103 101 Vinyl chloride ug/L 80 97 60-140106 980ND77.2 84.5 1,2-Dichloroethane-d4 (S)%94 70-130101 4-Bromofluorobenzene (S)%98 70-13099 Toluene-d8 (S)%97 70-13097 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 24 of 34 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92533561 CEMEX 11.990018.01 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: 614915 SM 6200B SM 6200B 6200B MSV Laboratory:Pace Analytical Services - Charlotte Associated Lab Samples: 92533561002 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK: 3235913 Associated Lab Samples:92533561002 Matrix: Water Analyzed 1,1,1,2-Tetrachloroethane ug/L ND 0.50 04/21/21 00:57 1,1,1-Trichloroethane ug/L ND 0.50 04/21/21 00:57 1,1,2,2-Tetrachloroethane ug/L ND 0.50 04/21/21 00:57 1,1,2-Trichloroethane ug/L ND 0.50 04/21/21 00:57 1,1-Dichloroethane ug/L ND 0.50 04/21/21 00:57 1,1-Dichloroethene ug/L ND 0.50 04/21/21 00:57 1,1-Dichloropropene ug/L ND 0.50 04/21/21 00:57 1,2,3-Trichlorobenzene ug/L ND 2.0 04/21/21 00:57 1,2,3-Trichloropropane ug/L ND 0.50 04/21/21 00:57 1,2,4-Trichlorobenzene ug/L ND 2.0 04/21/21 00:57 1,2,4-Trimethylbenzene ug/L ND 0.50 04/21/21 00:57 1,2-Dibromo-3-chloropropane ug/L ND 1.0 04/21/21 00:57 1,2-Dibromoethane (EDB)ug/L ND 0.50 04/21/21 00:57 1,2-Dichlorobenzene ug/L ND 0.50 04/21/21 00:57 1,2-Dichloroethane ug/L ND 0.50 04/21/21 00:57 1,2-Dichloropropane ug/L ND 0.50 04/21/21 00:57 1,3,5-Trimethylbenzene ug/L ND 0.50 04/21/21 00:57 1,3-Dichlorobenzene ug/L ND 0.50 04/21/21 00:57 1,3-Dichloropropane ug/L ND 0.50 04/21/21 00:57 1,4-Dichlorobenzene ug/L ND 0.50 04/21/21 00:57 2,2-Dichloropropane ug/L ND 0.50 04/21/21 00:57 2-Chlorotoluene ug/L ND 0.50 04/21/21 00:57 4-Chlorotoluene ug/L ND 0.50 04/21/21 00:57 Benzene ug/L ND 0.50 04/21/21 00:57 Bromobenzene ug/L ND 0.50 04/21/21 00:57 Bromochloromethane ug/L ND 0.50 04/21/21 00:57 Bromodichloromethane ug/L ND 0.50 04/21/21 00:57 Bromoform ug/L ND 0.50 04/21/21 00:57 Bromomethane ug/L ND 5.0 04/21/21 00:57 Carbon tetrachloride ug/L ND 0.50 04/21/21 00:57 Chlorobenzene ug/L ND 0.50 04/21/21 00:57 Chloroethane ug/L ND 1.0 04/21/21 00:57 Chloroform ug/L ND 0.50 04/21/21 00:57 Chloromethane ug/L ND 1.0 04/21/21 00:57 cis-1,2-Dichloroethene ug/L ND 0.50 04/21/21 00:57 cis-1,3-Dichloropropene ug/L ND 0.50 04/21/21 00:57 Dibromochloromethane ug/L ND 0.50 04/21/21 00:57 Dibromomethane ug/L ND 0.50 04/21/21 00:57 Dichlorodifluoromethane ug/L ND 0.50 04/21/21 00:57 Diisopropyl ether ug/L ND 0.50 04/21/21 00:57 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 25 of 34 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92533561 CEMEX 11.990018.01 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: 3235913 Associated Lab Samples:92533561002 Matrix: Water Analyzed Ethylbenzene ug/L ND 0.50 04/21/21 00:57 Hexachloro-1,3-butadiene ug/L ND 2.0 04/21/21 00:57 Isopropylbenzene (Cumene)ug/L ND 0.50 04/21/21 00:57 m&p-Xylene ug/L ND 1.0 04/21/21 00:57 Methyl-tert-butyl ether ug/L ND 0.50 04/21/21 00:57 Methylene Chloride ug/L ND 2.0 04/21/21 00:57 n-Butylbenzene ug/L ND 0.50 04/21/21 00:57 n-Propylbenzene ug/L ND 0.50 04/21/21 00:57 Naphthalene ug/L ND 2.0 04/21/21 00:57 o-Xylene ug/L ND 0.50 04/21/21 00:57 sec-Butylbenzene ug/L ND 0.50 04/21/21 00:57 Styrene ug/L ND 0.50 04/21/21 00:57 tert-Butylbenzene ug/L ND 0.50 04/21/21 00:57 Tetrachloroethene ug/L ND 0.50 04/21/21 00:57 Toluene ug/L ND 0.50 04/21/21 00:57 trans-1,2-Dichloroethene ug/L ND 0.50 04/21/21 00:57 trans-1,3-Dichloropropene ug/L ND 0.50 04/21/21 00:57 Trichloroethene ug/L ND 0.50 04/21/21 00:57 Trichlorofluoromethane ug/L ND 1.0 04/21/21 00:57 Vinyl chloride ug/L ND 1.0 04/21/21 00:57 1,2-Dichloroethane-d4 (S)%96 70-130 04/21/21 00:57 4-Bromofluorobenzene (S)%92 70-130 04/21/21 00:57 Toluene-d8 (S)%101 70-130 04/21/21 00:57 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 3235914LABORATORY CONTROL SAMPLE: LCSSpike 1,1,1,2-Tetrachloroethane ug/L 52.050 104 60-140 1,1,1-Trichloroethane ug/L 50.950 102 60-140 1,1,2,2-Tetrachloroethane ug/L 51.550 103 60-140 1,1,2-Trichloroethane ug/L 50.850 102 60-140 1,1-Dichloroethane ug/L 52.050 104 60-140 1,1-Dichloroethene ug/L 53.850 108 60-140 1,1-Dichloropropene ug/L 50.450 101 60-140 1,2,3-Trichlorobenzene ug/L 44.950 90 60-140 1,2,3-Trichloropropane ug/L 51.850 104 60-140 1,2,4-Trichlorobenzene ug/L 45.850 92 60-140 1,2,4-Trimethylbenzene ug/L 46.050 92 60-140 1,2-Dibromo-3-chloropropane ug/L 53.850 108 60-140 1,2-Dibromoethane (EDB)ug/L 54.450 109 60-140 1,2-Dichlorobenzene ug/L 46.550 93 60-140 1,2-Dichloroethane ug/L 45.750 91 60-140 1,2-Dichloropropane ug/L 51.650 103 60-140 1,3,5-Trimethylbenzene ug/L 47.450 95 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: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 26 of 34 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92533561 CEMEX 11.990018.01 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. 3235914LABORATORY CONTROL SAMPLE: LCSSpike 1,3-Dichlorobenzene ug/L 46.450 93 60-140 1,3-Dichloropropane ug/L 54.550 109 60-140 1,4-Dichlorobenzene ug/L 47.050 94 60-140 2,2-Dichloropropane ug/L 46.650 93 60-140 2-Chlorotoluene ug/L 47.650 95 60-140 4-Chlorotoluene ug/L 46.950 94 60-140 Benzene ug/L 50.250 100 60-140 Bromobenzene ug/L 51.250 102 60-140 Bromochloromethane ug/L 52.050 104 60-140 Bromodichloromethane ug/L 50.250 100 60-140 Bromoform ug/L 54.850 110 60-140 Bromomethane ug/L 52.550 105 60-140 Carbon tetrachloride ug/L 50.550 101 60-140 Chlorobenzene ug/L 50.950 102 60-140 Chloroethane ug/L 46.750 93 60-140 Chloroform ug/L 44.150 88 60-140 Chloromethane ug/L 46.250 92 60-140 cis-1,2-Dichloroethene ug/L 51.350 103 60-140 cis-1,3-Dichloropropene ug/L 50.650 101 60-140 Dibromochloromethane ug/L 56.050 112 60-140 Dibromomethane ug/L 51.450 103 60-140 Dichlorodifluoromethane ug/L 44.750 89 60-140 Diisopropyl ether ug/L 46.850 94 60-140 Ethylbenzene ug/L 48.950 98 60-140 Hexachloro-1,3-butadiene ug/L 45.450 91 60-140 Isopropylbenzene (Cumene)ug/L 48.750 97 60-140 m&p-Xylene ug/L 99.7100 100 60-140 Methyl-tert-butyl ether ug/L 47.850 96 60-140 Methylene Chloride ug/L 47.950 96 60-140 n-Butylbenzene ug/L 45.450 91 60-140 n-Propylbenzene ug/L 46.750 93 60-140 Naphthalene ug/L 46.150 92 60-140 o-Xylene ug/L 48.350 97 60-140 sec-Butylbenzene ug/L 46.050 92 60-140 Styrene ug/L 51.550 103 60-140 tert-Butylbenzene ug/L 40.050 80 60-140 Tetrachloroethene ug/L 49.550 99 60-140 Toluene ug/L 48.350 97 60-140 trans-1,2-Dichloroethene ug/L 52.550 105 60-140 trans-1,3-Dichloropropene ug/L 51.250 102 60-140 Trichloroethene ug/L 49.950 100 60-140 Trichlorofluoromethane ug/L 47.750 95 60-140 Vinyl chloride ug/L 45.650 91 60-140 1,2-Dichloroethane-d4 (S)%93 70-130 4-Bromofluorobenzene (S)%99 70-130 Toluene-d8 (S)%96 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: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 27 of 34 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92533561 CEMEX 11.990018.01 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. 3235915MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92532952010 3235916 MSD Result MSD % Rec RPD MSDMS Spike Conc. 1,1,1,2-Tetrachloroethane ug/L 8000 99 60-140111 118000ND7950 8910 1,1,1-Trichloroethane ug/L 8000 102 60-140113 118000ND8150 9070 1,1,2,2-Tetrachloroethane ug/L 8000 101 60-140111 98000ND8100 8860 1,1,2-Trichloroethane ug/L 8000 101 60-140111 98000ND8060 8850 1,1-Dichloroethane ug/L 8000 104 60-140117 128000ND8350 9390 1,1-Dichloroethene ug/L 8000 112 60-140123 108000ND8950 9870 1,1-Dichloropropene ug/L 8000 102 60-140113 118000ND8160 9070 1,2,3-Trichlorobenzene ug/L 8000 79 60-14094 178000ND6290 7490 1,2,3-Trichloropropane ug/L 8000 101 60-140110 88000ND8090 8790 1,2,4-Trichlorobenzene ug/L 8000 80 60-14093 158000ND6390 7420 1,2,4-Trimethylbenzene ug/L 8000 93 60-140111 128000429011700 13200 1,2-Dibromo-3-chloropropane ug/L 8000 100 60-140113 128000ND8020 9010 1,2-Dibromoethane (EDB)ug/L 8000 103 60-140116 1280003738610 9680 1,2-Dichlorobenzene ug/L 8000 88 60-14099 118000ND7060 7890 1,2-Dichloroethane ug/L 8000 93 60-140101 880004437900 8520 1,2-Dichloropropane ug/L 8000 104 60-140114 98000ND8300 9130 1,3,5-Trimethylbenzene ug/L 8000 107 60-140121 138000ND8560 9710 1,3-Dichlorobenzene ug/L 8000 89 60-140100 118000ND7130 7980 1,3-Dichloropropane ug/L 8000 107 60-140118 108000ND8540 9410 1,4-Dichlorobenzene ug/L 8000 90 60-140100 118000ND7180 8020 2,2-Dichloropropane ug/L 8000 76 60-14084 108000ND6110 6760 2-Chlorotoluene ug/L 8000 97 60-140106 98000ND7760 8480 4-Chlorotoluene ug/L 8000 91 60-140101 118000ND7240 8120 Benzene ug/L 8000 103 60-140132 880002070029000 31300 Bromobenzene ug/L 8000 102 60-140113 108000ND8150 9010 Bromochloromethane ug/L 8000 103 60-140110 68000ND8260 8800 Bromodichloromethane ug/L 8000 98 60-140109 108000ND7870 8710 Bromoform ug/L 8000 99 60-140110 108000ND7950 8790 Bromomethane ug/L 8000 116 60-140124 78000ND9260 9940 Carbon tetrachloride ug/L 8000 98 60-140114 158000ND7810 9080 Chlorobenzene ug/L 8000 102 60-140112 108000ND8130 8960 Chloroethane ug/L 8000 123 60-140130 58000ND9870 10400 Chloroform ug/L 8000 88 60-14097 98000ND7080 7760 Chloromethane ug/L 8000 90 60-140101 128000ND7160 8110 cis-1,2-Dichloroethene ug/L 8000 102 60-140114 118000ND8180 9150 cis-1,3-Dichloropropene ug/L 8000 96 60-140106 118000ND7650 8500 Dibromochloromethane ug/L 8000 105 60-140117 118000ND8420 9370 Dibromomethane ug/L 8000 102 60-140113 108000ND8150 9010 Dichlorodifluoromethane ug/L 8000 82 60-14093 138000ND6560 7480 Diisopropyl ether ug/L 8000 90 60-140104 1280009148150 9230 Ethylbenzene ug/L 8000 100 60-140114 98000341011400 12500 Hexachloro-1,3-butadiene ug/L 8000 80 60-14092 148000ND6370 7340 Isopropylbenzene (Cumene) ug/L 8000 97 60-140108 118000ND7750 8660 m&p-Xylene ug/L 16000 103 60-140119 9160001270029200 31800 Methyl-tert-butyl ether ug/L 8000 94 60-140125 780002460032200 34600 Methylene Chloride ug/L 8000 93 60-140102 98000ND7980 8710 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 28 of 34 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92533561 CEMEX 11.990018.01 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. 3235915MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92532952010 3235916 MSD Result MSD % Rec RPD MSDMS Spike Conc. n-Butylbenzene ug/L 8000 85 60-14095 118000ND6800 7620 n-Propylbenzene ug/L 8000 99 60-140111 128000ND7920 8890 Naphthalene ug/L 8000 77 60-14094 17800012907470 8820 o-Xylene ug/L 8000 100 60-140116 98000593013900 15200 sec-Butylbenzene ug/L 8000 91 60-140101 118000ND7250 8050 Styrene ug/L 8000 101 60-140111 108000ND8070 8890 tert-Butylbenzene ug/L 8000 79 60-14089 128000ND6320 7150 Tetrachloroethene ug/L 8000 99 60-140110 108000ND7900 8760 Toluene ug/L 8000 96 60-140139 780004190049500 53000 trans-1,2-Dichloroethene ug/L 8000 103 60-140114 118000ND8230 9150 trans-1,3-Dichloropropene ug/L 8000 95 60-140105 108000ND7640 8440 Trichloroethene ug/L 8000 101 60-140112 108000ND8090 8980 Trichlorofluoromethane ug/L 8000 112 60-140120 78000ND8960 9600 Vinyl chloride ug/L 8000 92 60-140105 138000ND7330 8370 1,2-Dichloroethane-d4 (S)%103 70-130101 4-Bromofluorobenzene (S)%99 70-13099 Toluene-d8 (S)%98 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: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 29 of 34 #=QL# QUALIFIERS Pace Project No.: Project: 92533561 CEMEX 11.990018.01 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 EPAMethod 8260. N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for each analyte is a combined concentration. Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes. TNI - The NELAC Institute. ANALYTE QUALIFIERS 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: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 30 of 34 #=CR# QUALITY CONTROL DATA CROSS REFERENCE TABLE Pace Project No.: Project: 92533561 CEMEX 11.990018.01 Lab ID Sample ID QC Batch Method QC Batch Analytical Method Analytical Batch 92533561001 614266MW-1 SM 6200B 92533561002 614915MW-7 SM 6200B 92533561003 614266MW-12 SM 6200B 92533561004 614877MW-13 SM 6200B 92533561005 614266MW-14 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: 04/21/2021 03:53 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 31 of 34 Page 32 of 34 Page 33 of 34 Page 34 of 34 APPENDIX B TIME VERSUS CONCENTRATION GRAPHS ________________________________________________________ 02,0004,0006,0008,00010,00012,00014,00016,00018,00020,000CONCENTRATION (μg/L)TIMETIME VERSUS CONCENTRATION OF BENZENE, TOLUENE, ETHYLBENZENE,TOTAL XYLENES,  ISOPROPYL ETHER, AND NAPHTHALENE IN MW‐1BenzeneTolueneEthylbenzeneTotal XylenesIPENaphthaleneSystem Shut Down ‐February 2007MMPE Events:November 2012,April 2015, September 2015, and April 2016 05001,0001,5002,0002,5003,0003,500CONCENTRATION (μg/L)TIMETIME VERSUS CONCENTRATION OF BENZENE, TOLUENE, ETHYLBENZENE,TOTAL XYLENES,  ISOPROPYL ETHER, AND NAPHTHALENE IN MW‐7BenzeneTolueneEthylbenzeneTotal XylenesIPENaphthaleneSystem Shut Down ‐February 2007MMPE Events:November 2012,April 2015, September 2015 and April 2016 05,00010,00015,00020,00025,00030,00035,000CONCENTRATION (μg/L)TIMETIME VERSUS CONCENTRATION OF BENZENE, TOLUENE, ETHYLBENZENE,TOTAL XYLENES,  ISOPROPYL ETHER, AND NAPHTHALENE IN MW‐12BenzeneTolueneEthylbenzeneTotal XylenesIPENaphthaleneSystem Shut Down ‐February 2007MMPE Events:November 2012,April 2015, September 2015 and April 2016Diffuser Installation August 2016 010,00020,00030,00040,00050,00060,00070,00080,000CONCENTRATION (μg/L)TIMETIME VERSUS CONCENTRATION OF BENZENE, TOLUENE, ETHYLBENZENE,TOTAL XYLENES,  ISOPROPYL ETHER, AND NAPHTHALENE IN MW‐13BenzeneTolueneEthylbenzeneTotal XylenesIPENaphthaleneSystem Shut Down ‐February 2007Not sampled ‐Free ProductMMPE Events:November 2012,April 2015, September 2015 and April 2016Diffuser Installation August 2016 05101520253035404550CONCENTRATION (μg/L)TIMETIME VERSUS CONCENTRATION OF BENZENE, TOLUENE, ETHYLBENZENE,TOTAL XYLENES,  ISOPROPYL ETHER, AND NAPHTHALENE IN MW‐14BenzeneTolueneEthylbenzeneTotal XylenesIPENaphthaleneSystem Shut Down ‐February 2007MMPE Events:November 2012,April 2015, September 2015 and April 2016