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HomeMy WebLinkAbout4104_CityHighPointKerseyValleyMSWLF_Sep2017GWMR_20171201 December 1, 2017 Ms. Jaclynne Drummond, Compliance Hydrogeologist Division of Waste Management, Solid Waste Section Asheville Regional Office 2090 US Highway 70 Swannanoa, North Carolina 28778 Re: Alternate Source Demonstration Addendum Kersey Valley MSWLF Permit No. 4104-MSWLF-1991 High Point, Guilford County, North Carolina Dear Jackie, This Alternative Source Demonstration Addendum (ASDA) is provided to address the approved June 26, 2017 Scope of Work and July 28, 2017 Additional Work Activities which were approved by NCDEQ on August 15, 2017. Babb & Associates, P.A. is providing this ASDA pursuant to 15A NCAC 13B .1633(c)(3) on behalf of the City of High Point to address the historic concentration of cadmium in monitoring well 4104-MW4, an existing compliance well in the water quality monitoring network. The approved ASDA Scope of Work provided for the replacement of monitoring well 4104- MW4 and the collection of soil and groundwater samples to determine the naturally occurring concentration of inorganic compounds in the groundwater hydraulically upgradient of the MSWLF. A description of the field activities, soil and groundwater laboratory analytical results, and ASDA conclusions is provided below. Background Information The Kersey Valley Landfill is located approximately five miles east of downtown High Point and one-half mile east of the intersection of US 70/US 29/I-85 Business on Kivett Drive. The surrounding area is mixed residential and commercial land uses. The Kersey Valley Landfill is located in the central Piedmont Physiographic Province, in the northern portion of the Carolina Slate Belt. Granite is the predominant rock type in the area and outcrops are observed along the creeks and within the site. Groundwater in the uppermost aquifer generally flows through unconsolidated sediments and secondary fractures in the underlying bedrock. Recharge occurs primarily in the northern portion of the site and is limited on slopes. Groundwater flows generally south where it discharges into two unnamed tributaries of Richland Creek. The groundwater potentiometric map (Figure 1) shows that monitoring well 4104-MW4 and the location of the new replacement well are hydraulically upgradient of the landfill operations and hydraulically downgradient of several commercial and residential properties along Kivett Drive. As noted in the approved Water Quality Monitoring Plan for the Kersey Valley Landfill, monitoring well 4104-MW4 is identified as “Upgradient of Phase 3”. Phases 1 through 3 were part of the original Area 1 landfill as shown on Figure 1. Historically, monitoring well 4104-MW4 has shown minor concentrations of cadmium over the past four years, ranging from a low of Below Quantitation Limits (BQL) in May 2014 to a high of 20.3 ug/l in April 2015. No other inorganic compounds have been reported above the NC 2L Groundwater Standards in monitoring well 4104-MW4. No other wells in the groundwater monitoring network have reported inorganic constituents in concentrations exceeding the NC 2L Groundwater Standards during recent water quality monitoring events. Monitoring Well Installation and Soil Sampling A new monitoring well was installed on September 5, 2017 to replace the existing 4104- MW4. The new well (4104-MW4A) is located approximately 75 feet to the east as shown on Figure 2. The new well was installed to a depth of 30 feet below land surface and constructed in accordance with the NC Well Construction Standards. The well was completed with a lockable steel above-grade protector and a 2’x2’ concrete pad. The Well Construction Record (GW-1) and the Well Construction Schematic are provided in Appendix A. During drilling of the new well, three soil samples were collected for laboratory analyses of total Appendix I metals. The soil samples were collected at depths of 8’, 18’, and 25’ to evaluate naturally occurring metals concentrations in the clay and silty sand soil encountered during the soil boring. A soil boring log for 4104-MW4A is provided in Appendix A. After installation, the well was developed to remove as much sediment as possible. An attempt was made to conduct a bail test on the new monitoring well to determine the estimated hydraulic conductivity of the shallow aquifer. It was determined that the recharge rate of the shallow aquifer did not allow for lowering the water table more that 2-3 inches using either a bailer or peristaltic pump. It is likely the high yield of the well is due to the relic open fractures observed at a depth of 16’ below land surface. If additional information is needed regarding aquifer properties, a higher capacity pump will be necessary. Groundwater Sample Collection Three groundwater samples were collected from the new well following well installation and development. Two groundwater samples were collected using a new disposable bailer. One sample was collected with a nitric acid preservative and a duplicate sample was collected unpreserved. The unpreserved sample was filtered in the laboratory using a 0.45 micron filter prior to adding the preservative. A third groundwater sample was collected from the new well using low-flow sampling methodology. This sample was collected using a peristaltic pump to slowly remove water within the screened section of the casing while continuously monitoring indicator parameters (pH, conductivity, temperature, dissolved oxygen, and ORP) using a flow cell. The turbidity of the sample was also be monitored during the low-flow sampling process. The sample was collected in a laboratory container with nitric acid preservative after the indicator parameters had stabilized and the turbidity was below 10 NTU (Table 1). The three groundwater samples were submitted to the laboratory for analysis of total Appendix I metals. A temperature blank was provided to assure proper transport of the samples. The samples were hand delivered to the analytical laboratory under chain of custody control. Laboratory Analysis The soil and groundwater samples from monitoring well 4104-MW4A were received by the analytical laboratory (Environmental Conservation Laboratories, Inc. of Cary, NC) on September 7, 2017. The analytical report was issued by ENCO laboratory on September 27, 2017 (Appendix B). A summary of the laboratory analytical results is provided with this report for groundwater (Table 2) and soil (Table 3). Soil Analytical Results The laboratory analysis of the three soil samples (SS-1, SS-2, and SS-3) reported concentrations above the laboratory reporting limit for several inorganic compounds, including: barium, cobalt, copper, vanadium, and zinc. Soil sample SS-1 was collected above the water table at a depth of 8’ below land surface. Soil samples SS- 2 and SS-3 were collected below the water table at depths of 18’ and 25’, respectfully. The higher concentration of inorganic compounds in SS-2 and SS-3 may be attributed to the relatively low pH of the groundwater (~4.5 pH). Groundwater Analytical Results The three groundwater samples collected from 4104-MW4A did not report any inorganic compounds above the laboratory reporting limits. Several inorganic compounds were detected above the method detection limit but below the method reporting limit (J flagged), including: barium, chromium, copper, thallium, vanadium, and zinc. These detected compounds generally correspond to the results of the soil sample analysis. A comparison of the three sample collection methodologies (bailer, bailer with filtering, and low-flow) did not indicate an appreciable difference in the reported concentrations of inorganic compounds. Conclusions and Recommendations Based on current and historic groundwater elevations at the site, new monitoring well 4104- MW4A is hydraulically upgradient of the landfill operations and downgradient of several commercial/residential properties along Kivett Drive. The laboratory analysis of the three soil samples collected during the installation of 4104- MW4A reported concentrations of barium, cobalt, copper, vanadium, and zinc above the laboratory reporting limit. The laboratory analysis of the three groundwater samples, collected with a bailer, bailer with filter, and low-flow, did not report any Appendix I inorganic compounds above the laboratory reporting limits. The method of sample collection did not appear to affect the outcome of the inorganic laboratory analysis. Based on the results of the Appendix I inorganic sampling and analysis of new monitoring well 4104-MW4A, groundwater quality at this location has not been impacted by landfill operations or any other activities. Based on the results of this ASDA and the hydraulic position of monitoring well 4104-MW4A with respect to the Kersey Valley Landfill operations, Babb & Associates, P.A. recommends continuation of detection monitoring at the facility. We appreciate your consideration of this ASDA and look forward to your response to this submittal. If there are any questions concerning this information, please contact the undersigned at (919) 325-0696. Respectfully, Babb & Associates, P.A. Gary D. Babb, P.G. President Cc: Mr. Mike Spencer, City of High Point Mr. Robby Stone, City of High Point           FIGURES TOC=784.62DTW=13.49GWE=771.13MW-7DTOC=783.97DTW=21.22GWE=762.75MW-8ATOC=760.69DTW=7.12GWE=753.57MW-8BTOC=760.91DTW=7.64GWE=753.27MW-15TOC=775.93DTW=15.10GWE=760.83MW-9TOC=786.48DTW=21.66GWE=764.82MW-10TOC=814.84DTW=20.77GWE=794.07MW-1TOC=833.37DTW=28.41GWE=804.96MW-4TOC=830.32DTW=15.77GWE=814.55MW-6ATOC=784.62MW-11TOC=813.06DTW=9.58GWE=803.48MW-12TOC=782.18DTW=9.10GWE=773.08MW-13STOC=819.19DTW=23.69GWE=795.50MW-13DTOC=818.78DTW=23.51GWE=795.27MW-14TOC=805.21DTW=16.41GWE=788.80MW-9TOC=786.48DTW=21.66GWE=764.82MW-10TOC=814.84DTW=20.77GWE=794.07MW-1TOC=833.37DTW=28.41GWE=804.96MW-4TOC=830.32DTW=15.77GWE=814.55MW-6ATOC=784.62MW-11TOC=813.06DTW=9.58GWE=803.48MW-12TOC=782.18DTW=9.10GWE=773.08MW-13STOC=819.19DTW=23.69GWE=795.50MW-13DTOC=818.78DTW=23.51GWE=795.27MW-14TOC=805.21DTW=16.41GWE=788.80PROJECT TITLE:DRAWING TITLE:REV. DATEDESCRIPTIONDESIGNED:DRAWN:APPROVED:PROJECT NO:SCALE:FILENAME:PREPARED BY:PREPARED FOR:SHEET NUMBER:DRAWING NUMBER:DATE:G:\CAD\High Point\Hpoint 14-1\sheets\HP-D0511.dwg - 5/11/2016 10:32 AM SEALSEALSMITHGARDNERENGINEERS+14 N. Boylan Avenue, Raleigh NC 27603NC LIC. NO. C-0828 (ENGINEERING)919.828.0577Electronic files are instruments of service provided by SmithGardner, Inc. for the convenience of the intended recipient(s), andno warranty is either expressed or implied.  Any reuse orredistribution of this document in whole or part without thewritten authorization of Smith Gardner, Inc., will be at the solerisk of the recipient.  If there is a discrepancy between theelectronic files and the signed and sealed hard copies, the hardcopies shall govern.  Use of  any electronic files generated orprovided by Smith Gardner, Inc., constitutes an acceptance ofthese terms and conditions.© 2014 Smith Gardner, Inc.CITY OF HIGH POINTDEPARTMENT OFPUBLIC SERVICESHIGH POINT, NCKERSEY VALLEY MSW LANDFILLPHASES 5A & 5BGROUNDWATERPOTENTIOMETRICSURFACE MAPAPRIL 2016 M.M.G.C.T.J.HPOINT 16-1AS SHOWNMay 2016HP-D0511FIG.1MW-1TOC=DTW=GWE=           TABLES TABLE 1Monitoring Well 4104-MW4A Low-Flow Field MeasurementsKersey Valley MSWLFHigh Point, North CarolinaPermit #41-04Time Temperature Dissolved Oxygen Conductivity pH ORP Turbidity915 19.1 5.60 67.2 6.45 152 NM920 18.5 5.30 64.8 5.78 180 735.0924 18.4 6.60 64.0 5.49 198 NM928 18.3 6.70 63.2 5.48 198 386.0932 18.3 6.60 62.9 5.35 200 NM935 18.3 6.30 62.8 5.08 207 168.0939 18.3 6.15 62.5 4.94 206 101.0945 18.8 5.64 62.1 4.84 204 37.0949 18.9 5.40 61.9 4.80 204 28.0953 18.9 5.30 62.1 4.70 202 25.01000 18.8 5.16 62.0 4.60 208 14.01005 19.0 5.07 61.9 4.38 199 16.01010 19.0 5.02 61.8 4.56 196 11.01015 19.0 5.32 61.8 4.50 194 8.5Notes:Field parameters measured using a YSI 556 Multi-Probe Meter with Flow Cell and Hanna HI 98703 Turbidity MeterNM - No Measurement TABLE 2Monitoring Well 4104-MW4AGroundwater Analytical ResultsKersey Valley MSWLFHigh Point, North CarolinaPermit #41-04Parameter Bailer Bailer Filtered Low-Flow 2L Groundwater StandardAntimony BQL BQL BQL NEArsenic BQL BQL BQL 10Barium 38.2 J 30.1 J 37.7 J 700Beryllium BQL BQL BQL NECadmium BQL BQL BQL 2Chromium 1.83 J 1.70 J 1.62 J 10Cobalt BQL BQL BQL NECopper 3.22 J BQL BQL 1000Lead BQL BQL BQL 15Nickel BQL BQL BQL 100Selenium BQL BQL BQL 20Silver BQL BQL BQL 20Thallium 0.305 J 0.304 J 0.220 J NEVanadium 2.05 J BQL 1.83 J NEZinc 7.82 J 4.95 J 6.54 J 1000Notes:All laboratory results and 2L Standards in ug/lNE - Not EstablishedBQL - Below Quantitation LimitJ - Estimated concentration, below method reporting limitSamples collected on September 7, 2017 TABLE 3Monitoring Well 4104-MW4ASoil Analytical ResultsKersey Valley MSWLFHigh Point, North CarolinaPermit #41-04Parameter SS-1 SS-2 SS-3Antimony BQL BQL BQLArsenic 0.507 J 2.62 J BQLBarium 83.8 J211 435Beryllium BQL BQL BQLCadmium BQL BQL BQLChromium 3.65 J 3.88 J 3.71 JCobalt 1.99 J12.7 29.8Copper15.0 53.2 59.1Lead 4.55 J 4.84 J 5.85 JNickel 2.41 J 4.34 J 11.0 JSelenium BQL BQL BQLSilver 0.209 J 0.363 J 0.366 JThallium BQL BQL 0.0719 JVanadium39.7 66.9 52.1Zinc12.0 42.3 45.9Notes:All laboratory results in mg/kg dryBold Concentrations Above Quantitation LimitBQL - Below Quantitation LimitJ - Estimated concentration, below method reporting limitSamples collected on September 7, 2017           APPENDIX A BABB AND ASSOCIATES, P.A. Raleigh, North Carolina SOIL BORING LOG PROJECT:Kersey Valley Landfill PROJECT #:4104-MSWLF-1991 BORING ID:MW-4 Replacement Page:1 of 1 Date:9/5/17 Total Depth:30.0 feet Method:Hollow-Stem Auger Boring Dia:6.25" Contractor:Piedmont Industrial Field Rep:G. Babb Sample Number Depth Interval Description Soil Sample Notes A 0' - 2.5' Fill Material B 2.5' - 5.0' Red fine sandy silty CLAY C 5.0' - 9.0' Red fine sandy silty CLAY SS-1 @ 8' D 9.0' - 16.0' Orange chlyey silty med. SAND PWR Wet at 16' E 16.0' - 25.0' Yellow clayey silty med. SAND SS-2 @ 18' PWR F 25.0' - 27.0' Brown fine sandy silty CLAY SS-3 @ 25' PWR G 27.0' - 30.0' Weathered granitic PWR with quartz PWR Comments: PVC stickup 3.0'. Time of boring water level - 21.15' below top of casing.           APPENDIX B 102-A Woodwinds Industrial Court Cary NC, 27511 919.467.3090 919.467.3515Phone:FAX:www.encolabs.com Environmental Conservation Laboratories, Inc. ENCO Workorder(s): CA13915 Raleigh, NC 27606 Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Enclosure(s) Project Number: [none], Project Name/Desc: Kersey Valley Landfill- Well Inst, Attn: Gary Babb Babb & Associates (BA024) 3605 Country Cove Lane Bill Scott Project Manager Wednesday, September 27, 2017 RE: Laboratory Results for Dear Gary Babb, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Thursday, September 7, 2017. The total number of pages in this report, including this page is 25. Page 1 of 26 www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE SS-1 CA13915-01 Sampled:09/05/17 09:30 Received:09/07/17 15:46Client ID:Lab ID: Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s) EPA 6010D 03/04/18 09/13/17 10:40 9/14/2017 15:30 EPA 6020B 03/04/18 09/20/17 14:02 9/22/2017 16:19 EPA 6020B 03/04/18 09/20/17 14:02 9/25/2017 13:40 SS-1 CA13915-01RE1 Sampled:09/05/17 09:30 Received:09/07/17 15:46Client ID:Lab ID: Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s) EPA 6020B 03/04/18 09/20/17 14:02 9/22/2017 17:14 SS-2 CA13915-02 Sampled:09/05/17 09:45 Received:09/07/17 15:46Client ID:Lab ID: Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s) EPA 6010D 03/04/18 09/13/17 10:40 9/14/2017 15:32 EPA 6020B 03/04/18 09/20/17 14:02 9/22/2017 16:25 EPA 6020B 03/04/18 09/20/17 14:02 9/25/2017 13:42 SS-2 CA13915-02RE1 Sampled:09/05/17 09:45 Received:09/07/17 15:46Client ID:Lab ID: Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s) EPA 6020B 03/04/18 09/20/17 14:02 9/22/2017 17:22 SS-3 CA13915-03 Sampled:09/05/17 10:00 Received:09/07/17 15:46Client ID:Lab ID: Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s) EPA 6010D 03/04/18 09/13/17 10:40 9/14/2017 15:35 EPA 6020B 03/04/18 09/20/17 14:02 9/22/2017 16:30 EPA 6020B 03/04/18 09/20/17 14:02 9/25/2017 13:45 SS-3 CA13915-03RE1 Sampled:09/05/17 10:00 Received:09/07/17 15:46Client ID:Lab ID: Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s) EPA 6020B 03/04/18 09/20/17 14:02 9/22/2017 17:27 4104-MW4Nbailer CA13915-04 Sampled:09/07/17 09:00 Received:09/07/17 15:46Client ID:Lab ID: Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s) EPA 6010D 03/06/18 09/11/17 13:22 9/12/2017 14:39 EPA 6020B 03/06/18 09/12/17 12:39 9/15/2017 12:34 Page 2 of 25 Page 2 of 26 www.encolabs.com 4104-MW4Nbailer(dissolved)CA13915-05 Sampled:09/07/17 09:00 Received:09/07/17 15:46Client ID:Lab ID: Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s) EPA 6010D 03/06/18 09/11/17 13:22 9/12/2017 15:11 EPA 6020B 03/06/18 09/12/17 12:39 9/15/2017 12:38 4104-MW4Npump CA13915-06 Sampled:09/07/17 10:15 Received:09/07/17 15:46Client ID:Lab ID: Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s) EPA 6010D 03/06/18 09/11/17 13:22 9/12/2017 15:13 EPA 6020B 03/06/18 09/12/17 12:39 9/15/2017 10:37 Page 3 of 25 Page 3 of 26 www.encolabs.com NORTH CAROLINA SWS SAMPLE DETECTION SUMMARY Analyte MethodUnitsResults Lab ID:Client ID:SS-1 CA13915-01 Flag NotesMDLNC SWSLMRLDF 0.507 mg/kg dry EPA 6010DJ 100.6430.4121Arsenic - Total 83.8 mg/kg dry EPA 6010DJ 1000.6430.1291Barium - Total 3.65 mg/kg dry EPA 6010DJ 100.6430.1291Chromium - Total 1.99 mg/kg dry EPA 6010DJ 100.6430.1291Cobalt - Total 15.0 mg/kg dry EPA 6010D 100.6430.2441Copper - Total 4.55 mg/kg dry EPA 6010DJ 100.6430.1541Lead - Total 2.41 mg/kg dry EPA 6010DJ 503.220.4631Nickel - Total 0.209 mg/kg dry EPA 6010DJ 100.6430.1291Silver - Total 39.7 mg/kg dry EPA 6010D 250.6430.1291Vanadium - Total 12.0 mg/kg dry EPA 6010D 103.221.421Zinc - Total Analyte MethodUnitsResults Lab ID:Client ID:SS-2 CA13915-02 Flag NotesMDLNC SWSLMRLDF 2.62 mg/kg dry EPA 6010DJ 100.7290.4671Arsenic - Total 211 mg/kg dry EPA 6010D 1000.7290.1461Barium - Total 3.88 mg/kg dry EPA 6010DJ 100.7290.1461Chromium - Total 12.7 mg/kg dry EPA 6010D 100.7290.1461Cobalt - Total 53.2 mg/kg dry EPA 6010D 100.7290.2771Copper - Total 4.84 mg/kg dry EPA 6010DJ 100.7290.1751Lead - Total 4.34 mg/kg dry EPA 6010DJ 503.650.5251Nickel - Total 0.363 mg/kg dry EPA 6010DJ 100.7290.1461Silver - Total 66.9 mg/kg dry EPA 6010D 250.7290.1461Vanadium - Total 42.3 mg/kg dry EPA 6010D 103.651.601Zinc - Total Analyte MethodUnitsResults Lab ID:Client ID:SS-3 CA13915-03 Flag NotesMDLNC SWSLMRLDF 435 mg/kg dry EPA 6010D 1000.7130.1431Barium - Total 3.71 mg/kg dry EPA 6010DJ 100.7130.1431Chromium - Total 29.8 mg/kg dry EPA 6010D 100.7130.1431Cobalt - Total 59.1 mg/kg dry EPA 6010D 100.7130.2711Copper - Total 5.85 mg/kg dry EPA 6010DJ 100.7130.1711Lead - Total 11.0 mg/kg dry EPA 6010DJ 503.570.5141Nickel - Total 0.366 mg/kg dry EPA 6010DJ 100.7130.1431Silver - Total 0.0719 mg/kg dry EPA 6020BJ R-015.51.490.05521Thallium - Total 52.1 mg/kg dry EPA 6010D 250.7130.1431Vanadium - Total 45.9 mg/kg dry EPA 6010D 103.571.571Zinc - Total Analyte MethodUnitsResults Lab ID:Client ID:4104-MW4Nbailer CA13915-04 Flag NotesMDLNC SWSLMRLDF 38.2 ug/L EPA 6010DJ 10010.01.001Barium - Total 1.83 ug/L EPA 6010DJ 1010.01.401Chromium - Total 3.22 ug/L EPA 6010DJ 1010.01.601Copper - Total 0.305 ug/L EPA 6020BJ 5.51.000.1101Thallium - Total 2.05 ug/L EPA 6010DJ 2510.01.401Vanadium - Total 7.82 ug/L EPA 6010DJ 1010.04.401Zinc - Total Analyte MethodUnitsResults Lab ID:Client ID:4104-MW4Nbailer(dissolved)CA13915-05 Flag NotesMDLNC SWSLMRLDF Page 4 of 25 Page 4 of 26 www.encolabs.com Analyte MethodUnitsResults Lab ID:Client ID:4104-MW4Nbailer(dissolved)CA13915-05 Flag NotesMDLNC SWSLMRLDF 30.1 ug/L EPA 6010DJ 10010.01.001Barium - Dissolved 1.70 ug/L EPA 6010DJ 1010.01.001Chromium - Dissolved 0.304 ug/L EPA 6020BJ 5.51.000.1101Thallium - Dissolved 4.95 ug/L EPA 6010DJ 1010.04.401Zinc - Dissolved Analyte MethodUnitsResults Lab ID:Client ID:4104-MW4Npump CA13915-06 Flag NotesMDLNC SWSLMRLDF 37.7 ug/L EPA 6010DJ 10010.01.001Barium - Total 1.62 ug/L EPA 6010DJ 1010.01.401Chromium - Total 0.220 ug/L EPA 6020BJ 5.51.000.1101Thallium - Total 1.83 ug/L EPA 6010DJ 2510.01.401Vanadium - Total 6.54 ug/L EPA 6010DJ 1010.04.401Zinc - Total Page 5 of 25 Page 5 of 26 www.encolabs.com ANALYTICAL RESULTS SS-1Description:Lab Sample ID:CA13915-01 09/07/17 15:46Received: Matrix:Soil Sampled:09/05/17 09:30 Work Order:CA13915 Kersey Valley Landfill- Well Inst,Project:Sampled By:Gary Babb % Solids: 77.7 Metals by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL mg/kg dry EPA 6010D 09/14/17 15:30Arsenic [7440-38-2] ^0.412 JMV0.6430.507 J 101 mg/kg dry EPA 6010D 09/14/17 15:30Barium [7440-39-3] ^0.129 JMV0.64383.8 J 1001 mg/kg dry EPA 6010D 09/14/17 15:30Beryllium [7440-41-7] ^0.0154 JMV0.06430.0154 U 11 mg/kg dry EPA 6010D 09/14/17 15:30Cadmium [7440-43-9] ^0.0124 JMV0.06430.0124 U 11 mg/kg dry EPA 6010D 09/14/17 15:30Chromium [7440-47-3] ^0.129 JMV0.6433.65 J 101 mg/kg dry EPA 6010D 09/14/17 15:30Cobalt [7440-48-4] ^0.129 JMV0.6431.99 J 101 mg/kg dry EPA 6010D 09/14/17 15:30Copper [7440-50-8] ^0.244 JMV0.64315.0 101 mg/kg dry EPA 6010D 09/14/17 15:30Lead [7439-92-1] ^0.154 JMV0.6434.55 J 101 mg/kg dry EPA 6010D 09/14/17 15:30Nickel [7440-02-0] ^0.463 JMV3.222.41 J 501 mg/kg dry EPA 6010D 09/14/17 15:30Silver [7440-22-4] ^0.129 JMV0.6430.209 J 101 mg/kg dry EPA 6010D 09/14/17 15:30Vanadium [7440-62-2] ^0.129 JMV0.64339.7 251 mg/kg dry EPA 6010D 09/14/17 15:30Zinc [7440-66-6] ^1.42 JMV3.2212.0 101 Page 6 of 25 Page 6 of 26 www.encolabs.com SS-1Description:Lab Sample ID:CA13915-01 09/07/17 15:46Received: Matrix:Soil Sampled:09/05/17 09:30 Work Order:CA13915 Kersey Valley Landfill- Well Inst,Project:Sampled By:Gary Babb % Solids: 77.7 Metals by EPA 6000/7000 Series Methods ^ - ENCO Orlando certified analyte [NC 424] Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL mg/kg dry EPA 6020B 09/22/17 17:14Antimony [7440-36-0] ^0.373 JMA0.7460.373 U R-0161 mg/kg dry EPA 6020B 09/22/17 16:19Selenium [7782-49-2] ^1.36 JMA1.491.36 U R-01101 mg/kg dry EPA 6020B 09/25/17 13:40Thallium [7440-28-0] ^0.0552 JMA1.490.0552 U R-015.51 This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 7 of 25 Page 7 of 26 www.encolabs.com SS-2Description:Lab Sample ID:CA13915-02 09/07/17 15:46Received: Matrix:Soil Sampled:09/05/17 09:45 Work Order:CA13915 Kersey Valley Landfill- Well Inst,Project:Sampled By:Gary Babb % Solids: 68.5 Metals by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL mg/kg dry EPA 6010D 09/14/17 15:32Arsenic [7440-38-2] ^0.467 JMV0.7292.62 J 101 mg/kg dry EPA 6010D 09/14/17 15:32Barium [7440-39-3] ^0.146 JMV0.729211 1001 mg/kg dry EPA 6010D 09/14/17 15:32Beryllium [7440-41-7] ^0.0175 JMV0.07290.0175 U 11 mg/kg dry EPA 6010D 09/14/17 15:32Cadmium [7440-43-9] ^0.0140 JMV0.07290.0140 U 11 mg/kg dry EPA 6010D 09/14/17 15:32Chromium [7440-47-3] ^0.146 JMV0.7293.88 J 101 mg/kg dry EPA 6010D 09/14/17 15:32Cobalt [7440-48-4] ^0.146 JMV0.72912.7 101 mg/kg dry EPA 6010D 09/14/17 15:32Copper [7440-50-8] ^0.277 JMV0.72953.2 101 mg/kg dry EPA 6010D 09/14/17 15:32Lead [7439-92-1] ^0.175 JMV0.7294.84 J 101 mg/kg dry EPA 6010D 09/14/17 15:32Nickel [7440-02-0] ^0.525 JMV3.654.34 J 501 mg/kg dry EPA 6010D 09/14/17 15:32Silver [7440-22-4] ^0.146 JMV0.7290.363 J 101 mg/kg dry EPA 6010D 09/14/17 15:32Vanadium [7440-62-2] ^0.146 JMV0.72966.9 251 mg/kg dry EPA 6010D 09/14/17 15:32Zinc [7440-66-6] ^1.60 JMV3.6542.3 101 Page 8 of 25 Page 8 of 26 www.encolabs.com SS-2Description:Lab Sample ID:CA13915-02 09/07/17 15:46Received: Matrix:Soil Sampled:09/05/17 09:45 Work Order:CA13915 Kersey Valley Landfill- Well Inst,Project:Sampled By:Gary Babb % Solids: 68.5 Metals by EPA 6000/7000 Series Methods ^ - ENCO Orlando certified analyte [NC 424] Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL mg/kg dry EPA 6020B 09/22/17 17:22Antimony [7440-36-0] ^0.477 JMA0.9540.477 U R-0161 mg/kg dry EPA 6020B 09/22/17 16:25Selenium [7782-49-2] ^1.74 JMA1.911.74 U R-01101 mg/kg dry EPA 6020B 09/25/17 13:42Thallium [7440-28-0] ^0.0706 JMA1.910.0706 U R-015.51 This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 9 of 25 Page 9 of 26 www.encolabs.com SS-3Description:Lab Sample ID:CA13915-03 09/07/17 15:46Received: Matrix:Soil Sampled:09/05/17 10:00 Work Order:CA13915 Kersey Valley Landfill- Well Inst,Project:Sampled By:Gary Babb % Solids: 70.1 Metals by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL mg/kg dry EPA 6010D 09/14/17 15:35Arsenic [7440-38-2] ^0.457 JMV0.7130.457 U 101 mg/kg dry EPA 6010D 09/14/17 15:35Barium [7440-39-3] ^0.143 JMV0.713435 1001 mg/kg dry EPA 6010D 09/14/17 15:35Beryllium [7440-41-7] ^0.0171 JMV0.07130.0171 U 11 mg/kg dry EPA 6010D 09/14/17 15:35Cadmium [7440-43-9] ^0.0137 JMV0.07130.0137 U 11 mg/kg dry EPA 6010D 09/14/17 15:35Chromium [7440-47-3] ^0.143 JMV0.7133.71 J 101 mg/kg dry EPA 6010D 09/14/17 15:35Cobalt [7440-48-4] ^0.143 JMV0.71329.8 101 mg/kg dry EPA 6010D 09/14/17 15:35Copper [7440-50-8] ^0.271 JMV0.71359.1 101 mg/kg dry EPA 6010D 09/14/17 15:35Lead [7439-92-1] ^0.171 JMV0.7135.85 J 101 mg/kg dry EPA 6010D 09/14/17 15:35Nickel [7440-02-0] ^0.514 JMV3.5711.0 J 501 mg/kg dry EPA 6010D 09/14/17 15:35Silver [7440-22-4] ^0.143 JMV0.7130.366 J 101 mg/kg dry EPA 6010D 09/14/17 15:35Vanadium [7440-62-2] ^0.143 JMV0.71352.1 251 mg/kg dry EPA 6010D 09/14/17 15:35Zinc [7440-66-6] ^1.57 JMV3.5745.9 101 Page 10 of 25 Page 10 of 26 www.encolabs.com SS-3Description:Lab Sample ID:CA13915-03 09/07/17 15:46Received: Matrix:Soil Sampled:09/05/17 10:00 Work Order:CA13915 Kersey Valley Landfill- Well Inst,Project:Sampled By:Gary Babb % Solids: 70.1 Metals by EPA 6000/7000 Series Methods ^ - ENCO Orlando certified analyte [NC 424] Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL mg/kg dry EPA 6020B 09/22/17 17:27Antimony [7440-36-0] ^0.373 JMA0.7450.373 U R-0161 mg/kg dry EPA 6020B 09/22/17 16:30Selenium [7782-49-2] ^1.36 JMA1.491.36 U R-01101 mg/kg dry EPA 6020B 09/25/17 13:45Thallium [7440-28-0] ^0.0552 JMA1.490.0719 J R-015.51 This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 11 of 25 Page 11 of 26 www.encolabs.com 4104-MW4NbailerDescription:Lab Sample ID:CA13915-04 09/07/17 15:46Received: Matrix:Water Sampled:09/07/17 09:00 Work Order:CA13915 Kersey Valley Landfill- Well Inst,Project:Sampled By:Gary Babb Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL ug/L EPA 6020B 09/15/17 12:34Antimony [7440-36-0] ^0.370 JDH2.000.370 U 61 ug/L EPA 6010D 09/12/17 14:39Arsenic [7440-38-2] ^6.80 JMV10.06.80 U 101 ug/L EPA 6010D 09/12/17 14:39Barium [7440-39-3] ^1.00 JMV10.038.2 J 1001 ug/L EPA 6010D 09/12/17 14:39Beryllium [7440-41-7] ^0.130 JMV1.000.130 U 11 ug/L EPA 6010D 09/12/17 14:39Cadmium [7440-43-9] ^0.360 JMV1.000.360 U 11 ug/L EPA 6010D 09/12/17 14:39Chromium [7440-47-3] ^1.40 JMV10.01.83 J 101 ug/L EPA 6010D 09/12/17 14:39Cobalt [7440-48-4] ^1.10 JMV10.01.10 U 101 ug/L EPA 6010D 09/12/17 14:39Copper [7440-50-8] ^1.60 JMV10.03.22 J 101 ug/L EPA 6010D 09/12/17 14:39Lead [7439-92-1] ^3.10 JMV10.03.10 U 101 ug/L EPA 6010D 09/12/17 14:39Nickel [7440-02-0] ^2.20 JMV10.02.20 U 501 ug/L EPA 6020B 09/15/17 12:34Selenium [7782-49-2] ^0.910 JDH3.000.910 U 101 ug/L EPA 6010D 09/12/17 14:39Silver [7440-22-4] ^1.90 JMV10.01.90 U 101 ug/L EPA 6020B 09/15/17 12:34Thallium [7440-28-0] ^0.110 JDH1.000.305 J 5.51 ug/L EPA 6010D 09/12/17 14:39Vanadium [7440-62-2] ^1.40 JMV10.02.05 J 251 ug/L EPA 6010D 09/12/17 14:39Zinc [7440-66-6] ^4.40 JMV10.07.82 J 101 This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 12 of 25 Page 12 of 26 www.encolabs.com 4104-MW4Nbailer(dissolved)Description:Lab Sample ID:CA13915-05 09/07/17 15:46Received: Matrix:Water Sampled:09/07/17 09:00 Work Order:CA13915 Kersey Valley Landfill- Well Inst,Project:Sampled By:Gary Babb Metals (Dissolved) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL ug/L EPA 6020B 09/15/17 12:38Antimony [7440-36-0] ^0.370 JDH2.000.370 U 61 ug/L EPA 6010D 09/12/17 15:11Arsenic [7440-38-2] ^6.80 JMV10.06.80 U 101 ug/L EPA 6010D 09/12/17 15:11Barium [7440-39-3] ^1.00 JMV10.030.1 J 1001 ug/L EPA 6010D 09/12/17 15:11Beryllium [7440-41-7] ^0.130 JMV1.000.130 U 11 ug/L EPA 6010D 09/12/17 15:11Cadmium [7440-43-9] ^0.360 JMV1.000.360 U 11 ug/L EPA 6010D 09/12/17 15:11Chromium [7440-47-3] ^1.00 JMV10.01.70 J 101 ug/L EPA 6010D 09/12/17 15:11Cobalt [7440-48-4] ^1.10 JMV10.01.10 U 101 ug/L EPA 6010D 09/12/17 15:11Copper [7440-50-8] ^1.60 JMV10.01.60 U 101 ug/L EPA 6010D 09/12/17 15:11Lead [7439-92-1] ^3.10 JMV10.03.10 U 101 ug/L EPA 6010D 09/12/17 15:11Nickel [7440-02-0] ^2.20 JMV10.02.20 U 501 ug/L EPA 6020B 09/15/17 12:38Selenium [7782-49-2] ^0.910 JDH3.000.910 U 101 ug/L EPA 6010D 09/12/17 15:11Silver [7440-22-4] ^5.00 JMV10.05.00 U 101 ug/L EPA 6020B 09/15/17 12:38Thallium [7440-28-0] ^0.110 JDH1.000.304 J 5.51 ug/L EPA 6010D 09/12/17 15:11Vanadium [7440-62-2] ^1.40 JMV10.01.40 U 251 ug/L EPA 6010D 09/12/17 15:11Zinc [7440-66-6] ^4.40 JMV10.04.95 J 101 This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 13 of 25 Page 13 of 26 www.encolabs.com 4104-MW4NpumpDescription:Lab Sample ID:CA13915-06 09/07/17 15:46Received: Matrix:Water Sampled:09/07/17 10:15 Work Order:CA13915 Kersey Valley Landfill- Well Inst,Project:Sampled By:Gary Babb Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL ug/L EPA 6020B 09/15/17 10:37Antimony [7440-36-0] ^0.370 JDH2.000.370 U 61 ug/L EPA 6010D 09/12/17 15:13Arsenic [7440-38-2] ^6.80 JMV10.06.80 U 101 ug/L EPA 6010D 09/12/17 15:13Barium [7440-39-3] ^1.00 JMV10.037.7 J 1001 ug/L EPA 6010D 09/12/17 15:13Beryllium [7440-41-7] ^0.130 JMV1.000.130 U 11 ug/L EPA 6010D 09/12/17 15:13Cadmium [7440-43-9] ^0.360 JMV1.000.360 U 11 ug/L EPA 6010D 09/12/17 15:13Chromium [7440-47-3] ^1.40 JMV10.01.62 J 101 ug/L EPA 6010D 09/12/17 15:13Cobalt [7440-48-4] ^1.10 JMV10.01.10 U 101 ug/L EPA 6010D 09/12/17 15:13Copper [7440-50-8] ^1.60 JMV10.01.60 U 101 ug/L EPA 6010D 09/12/17 15:13Lead [7439-92-1] ^3.10 JMV10.03.10 U 101 ug/L EPA 6010D 09/12/17 15:13Nickel [7440-02-0] ^2.20 JMV10.02.20 U 501 ug/L EPA 6020B 09/15/17 10:37Selenium [7782-49-2] ^0.910 JDH3.000.910 U 101 ug/L EPA 6010D 09/12/17 15:13Silver [7440-22-4] ^1.90 JMV10.01.90 U 101 ug/L EPA 6020B 09/15/17 10:37Thallium [7440-28-0] ^0.110 JDH1.000.220 J 5.51 ug/L EPA 6010D 09/12/17 15:13Vanadium [7440-62-2] ^1.40 JMV10.01.83 J 251 ug/L EPA 6010D 09/12/17 15:13Zinc [7440-66-6] ^4.40 JMV10.06.54 J 101 This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 14 of 25 Page 14 of 26 www.encolabs.com QUALITY CONTROL Metals by EPA 6000/7000 Series Methods - Quality Control Batch 7I13018 - EPA 3050B Prepared: 09/13/2017 10:40 Analyzed: 09/14/2017 14:36Blank (7I13018-BLK1) RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag mg/kg wet0.5000.320 U Arsenic mg/kg wet0.5000.100 U Barium mg/kg wet0.05000.0120 U Beryllium mg/kg wet0.05000.00960 U Cadmium mg/kg wet0.5000.100 U Chromium mg/kg wet0.5000.100 U Cobalt mg/kg wet0.5000.190 U Copper mg/kg wet0.5000.120 U Lead mg/kg wet2.500.360 U Nickel mg/kg wet0.5000.100 U Silver mg/kg wet0.5000.100 U Vanadium mg/kg wet2.501.10 U Zinc Prepared: 09/13/2017 10:40 Analyzed: 09/14/2017 15:16LCS (7I13018-BS1) RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag mg/kg wet0.500 10.0 80-120959.51 Arsenic mg/kg wet0.500 10.0 80-120949.42 Barium mg/kg wet0.0500 1.00 80-120910.912 Beryllium mg/kg wet0.0500 1.00 80-120930.930 Cadmium mg/kg wet0.500 10.0 80-120969.57 Chromium mg/kg wet0.500 10.0 80-120969.59 Cobalt mg/kg wet0.500 10.0 80-120959.48 Copper mg/kg wet0.500 10.0 80-120959.45 Lead mg/kg wet2.50 10.0 80-120949.44 Nickel mg/kg wet0.500 10.0 80-1201009.99 Silver mg/kg wet0.500 10.0 80-1201009.96 Vanadium mg/kg wet2.50 10.0 80-120919.15 Zinc Prepared: 09/13/2017 10:40 Analyzed: 09/14/2017 14:44Matrix Spike (7I13018-MS1) Source: CA12996-01 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag mg/kg dry0.502 9.94 75-125820.8809.05 Arsenic mg/kg dry0.502 9.94 75-125890.5219.37 Barium mg/kg dry0.0502 0.994 75-125800.0120 U0.795 Beryllium mg/kg dry0.0502 0.994 75-125760.00964 U0.753 Cadmium mg/kg dry0.502 9.94 75-125988.5918.3 Chromium mg/kg dry0.502 9.94 75-125850.100 U8.46 Cobalt mg/kg dry0.502 9.94 75-125850.191 U8.46 Copper mg/kg dry0.502 9.94 75-125921.9411.1 Lead mg/kg dry2.51 9.94 75-125850.361 U8.48 Nickel mg/kg dry0.502 9.94 75-125880.1978.91 Silver mg/kg dry0.502 9.94 75-12511117.628.7 Vanadium mg/kg dry2.51 9.94 75-125841.10 U8.35 Zinc Prepared: 09/13/2017 10:40 Analyzed: 09/14/2017 14:47Matrix Spike Dup (7I13018-MSD1) Page 15 of 25 Page 15 of 26 www.encolabs.com QUALITY CONTROL Metals by EPA 6000/7000 Series Methods - Quality Control Batch 7I13018 - EPA 3050B Prepared: 09/13/2017 10:40 Analyzed: 09/14/2017 14:47Matrix Spike Dup (7I13018-MSD1) Continued Source: CA12996-01 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag mg/kg dry0.502 10.0 2075-12585 40.8809.40 Arsenic mg/kg dry0.502 10.0 2075-12594 60.5219.93 Barium mg/kg dry0.0502 1.00 2075-12584 60.0120 U0.845 Beryllium mg/kg dry0.0502 1.00 2075-12581 80.00964 U0.815 Cadmium mg/kg dry0.502 10.0 2075-125101 28.5918.8 Chromium mg/kg dry0.502 10.0 2075-12590 70.100 U9.05 Cobalt mg/kg dry0.502 10.0 2075-12592 80.191 U9.19 Copper mg/kg dry0.502 10.0 2075-12596 51.9411.6 Lead mg/kg dry2.51 10.0 2075-12591 70.361 U9.14 Nickel mg/kg dry0.502 10.0 2075-12593 60.1979.51 Silver mg/kg dry0.502 10.0 2075-125106 217.628.2 Vanadium mg/kg dry2.51 10.0 2075-12589 71.10 U8.93 Zinc Prepared: 09/13/2017 10:40 Analyzed: 09/14/2017 14:50Post Spike (7I13018-PS1) Source: CA12996-01 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag mg/L0.0100 0.200 80-1201020.01750.222 Arsenic mg/L0.0100 0.200 80-120990.01040.208 Barium mg/L0.00100 0.0200 80-12093-0.0006020.0185 Beryllium mg/L0.00100 0.0200 80-12092-0.001200.0184 Cadmium mg/L0.0100 0.200 80-1201020.1710.374 Chromium mg/L0.0100 0.200 80-1201010.0008950.203 Cobalt mg/L0.0100 0.200 80-120990.003670.203 Copper mg/L0.0100 0.200 80-1201000.03870.238 Lead mg/L0.0500 0.200 80-1201000.001120.202 Nickel mg/L0.0100 0.200 80-120970.003930.198 Silver mg/L0.0100 0.200 80-1201080.3500.567 Vanadium mg/L0.0500 0.200 80-120960.001240.194 Zinc Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 7I11030 - EPA 3005A Prepared: 09/11/2017 13:22 Analyzed: 09/12/2017 14:30Blank (7I11030-BLK1) RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L10.06.80 U Arsenic ug/L10.01.00 U Barium ug/L1.000.130 U Beryllium ug/L1.000.360 U Cadmium ug/L10.01.40 U Chromium ug/L10.01.10 U Cobalt ug/L10.01.60 U Copper ug/L10.03.10 U Lead ug/L10.02.20 U Nickel ug/L10.01.90 U Silver Page 16 of 25 Page 16 of 26 www.encolabs.com QUALITY CONTROL Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 7I11030 - EPA 3005A Prepared: 09/11/2017 13:22 Analyzed: 09/12/2017 14:30Blank (7I11030-BLK1) Continued RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L10.01.40 U Vanadium ug/L10.04.40 U Zinc Prepared: 09/11/2017 13:22 Analyzed: 09/12/2017 14:33Blank (7I11030-BLK2) RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L10.06.80 U Arsenic ug/L10.01.00 U Barium ug/L1.000.130 U Beryllium ug/L1.000.360 U Cadmium ug/L10.01.40 U Chromium ug/L10.01.10 U Cobalt ug/L10.01.60 U Copper ug/L10.03.10 U Lead ug/L10.02.20 U Nickel ug/L10.01.90 U Silver ug/L10.01.40 U Vanadium ug/L10.04.40 U Zinc Prepared: 09/11/2017 13:22 Analyzed: 09/12/2017 14:36LCS (7I11030-BS1) RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L10.0 200 80-120107215 Arsenic ug/L10.0 200 80-120105211 Barium ug/L1.00 20.0 80-12010220.4 Beryllium ug/L1.00 20.0 80-12010320.7 Cadmium ug/L10.0 200 80-120107214 Chromium ug/L10.0 200 80-120105210 Cobalt ug/L10.0 200 80-120105211 Copper ug/L10.0 200 80-120106212 Lead ug/L10.0 200 80-120105209 Nickel ug/L10.0 200 80-120111223 Silver ug/L10.0 200 80-120110220 Vanadium ug/L10.0 200 80-120104208 Zinc Prepared: 09/11/2017 13:22 Analyzed: 09/12/2017 14:42Matrix Spike (7I11030-MS1) Source: CA13915-04 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L10.0 200 75-1251036.80 U205 Arsenic ug/L10.0 200 75-12510138.2239 Barium ug/L1.00 20.0 75-1251010.130 U20.1 Beryllium ug/L1.00 20.0 75-125980.360 U19.7 Cadmium ug/L10.0 200 75-1251031.83207 Chromium ug/L10.0 200 75-1251031.10 U206 Cobalt ug/L10.0 200 75-1251023.22206 Copper ug/L10.0 200 75-1251053.10 U210 Lead ug/L10.0 200 75-1251002.20 U201 Nickel Page 17 of 25 Page 17 of 26 www.encolabs.com QUALITY CONTROL Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 7I11030 - EPA 3005A Prepared: 09/11/2017 13:22 Analyzed: 09/12/2017 14:42Matrix Spike (7I11030-MS1) Continued Source: CA13915-04 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L10.0 200 75-1251071.90 U214 Silver ug/L10.0 200 75-1251062.05214 Vanadium ug/L10.0 200 75-125997.82206 Zinc Prepared: 09/11/2017 13:22 Analyzed: 09/12/2017 14:44Matrix Spike Dup (7I11030-MSD1) Source: CA13915-04 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L10.0 200 2075-125106 46.80 U213 Arsenic ug/L10.0 200 2075-125103 238.2244 Barium ug/L1.00 20.0 2075-125102 10.130 U20.3 Beryllium ug/L1.00 20.0 2075-125101 20.360 U20.1 Cadmium ug/L10.0 200 2075-125105 21.83211 Chromium ug/L10.0 200 2075-125104 11.10 U208 Cobalt ug/L10.0 200 2075-125103 13.22209 Copper ug/L10.0 200 2075-125106 0.93.10 U212 Lead ug/L10.0 200 2075-125104 42.20 U209 Nickel ug/L10.0 200 2075-125109 21.90 U217 Silver ug/L10.0 200 2075-125108 22.05219 Vanadium ug/L10.0 200 2075-125101 27.82210 Zinc Prepared: 09/11/2017 13:22 Analyzed: 09/12/2017 14:47Post Spike (7I11030-PS1) Source: CA13915-04 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag mg/L0.0100 0.200 80-120105-0.001940.209 Arsenic mg/L0.0100 0.200 80-1201020.03820.242 Barium mg/L0.00100 0.0200 80-120101-0.0002560.0202 Beryllium mg/L0.00100 0.0200 80-120100-4.52E-50.0199 Cadmium mg/L0.0100 0.200 80-1201040.001830.211 Chromium mg/L0.0100 0.200 80-1201030.0003480.206 Cobalt mg/L0.0100 0.200 80-1201020.003220.207 Copper mg/L0.0100 0.200 80-120105-9.94E-50.210 Lead mg/L0.0100 0.200 80-1201019.82E-50.202 Nickel mg/L0.0100 0.200 80-1201010.0003950.202 Silver mg/L0.0100 0.200 80-1201080.002050.218 Vanadium mg/L0.0100 0.200 80-1201000.007820.208 Zinc Batch 7I12020 - EPA 3005A Prepared: 09/12/2017 12:39 Analyzed: 09/15/2017 10:29Blank (7I12020-BLK1) RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L2.000.370 U Antimony ug/L3.000.910 U Selenium ug/L1.000.110 U Thallium Page 18 of 25 Page 18 of 26 www.encolabs.com QUALITY CONTROL Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 7I12020 - EPA 3005A Prepared: 09/12/2017 12:39 Analyzed: 09/15/2017 10:41LCS (7I12020-BS1) RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L2.00 200 80-120105210 Antimony ug/L3.00 200 80-120103207 Selenium ug/L1.00 200 80-120100200 Thallium Prepared: 09/12/2017 12:39 Analyzed: 09/15/2017 10:45Matrix Spike (7I12020-MS1) Source: CA13915-06 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L2.00 200 75-125990.370 U197 Antimony ug/L3.00 200 75-1251030.910 U206 Selenium ug/L1.00 200 75-125960.220191 Thallium Prepared: 09/12/2017 12:39 Analyzed: 09/15/2017 10:49Matrix Spike Dup (7I12020-MSD1) Source: CA13915-06 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L2.00 200 2075-125103 40.370 U205 Antimony ug/L3.00 200 2075-125103 0.40.910 U205 Selenium ug/L1.00 200 2075-12598 20.220195 Thallium Prepared: 09/12/2017 12:39 Analyzed: 09/15/2017 10:53Post Spike (7I12020-PS1) Source: CA13915-06 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L2.00 200 80-1201020.0143204 Antimony ug/L3.00 200 80-1201030.0842205 Selenium ug/L1.00 200 75-125990.220198 Thallium Metals (Dissolved) by EPA 6000/7000 Series Methods - Quality Control Batch 7I11030 - EPA 3005A Prepared: 09/11/2017 13:22 Analyzed: 09/12/2017 14:30Blank (7I11030-BLK1) RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L10.06.80 U Arsenic ug/L10.01.00 U Barium ug/L1.000.130 U Beryllium ug/L1.000.360 U Cadmium ug/L10.01.00 U Chromium ug/L10.01.10 U Cobalt ug/L10.01.60 U Copper ug/L10.03.10 U Lead ug/L10.02.20 U Nickel ug/L10.05.00 U Silver ug/L10.01.40 U Vanadium ug/L10.04.40 U Zinc Page 19 of 25 Page 19 of 26 www.encolabs.com QUALITY CONTROL Metals (Dissolved) by EPA 6000/7000 Series Methods - Quality Control Batch 7I11030 - EPA 3005A Prepared: 09/11/2017 13:22 Analyzed: 09/12/2017 14:33Blank (7I11030-BLK2) RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L10.06.80 U Arsenic ug/L10.01.00 U Barium ug/L1.000.130 U Beryllium ug/L1.000.360 U Cadmium ug/L10.01.00 U Chromium ug/L10.01.10 U Cobalt ug/L10.01.60 U Copper ug/L10.03.10 U Lead ug/L10.02.20 U Nickel ug/L10.05.00 U Silver ug/L10.01.40 U Vanadium ug/L10.04.40 U Zinc Prepared: 09/11/2017 13:22 Analyzed: 09/12/2017 14:36LCS (7I11030-BS1) RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L10.0 200 80-120107215 Arsenic ug/L10.0 200 80-120105211 Barium ug/L1.00 20.0 80-12010220.4 Beryllium ug/L1.00 20.0 80-12010320.7 Cadmium ug/L10.0 200 80-120107214 Chromium ug/L10.0 200 80-120105210 Cobalt ug/L10.0 200 80-120105211 Copper ug/L10.0 200 80-120106212 Lead ug/L10.0 200 80-120105209 Nickel ug/L10.0 200 80-120111223 Silver ug/L10.0 200 80-120110220 Vanadium ug/L10.0 200 80-120104208 Zinc Prepared: 09/11/2017 13:22 Analyzed: 09/12/2017 14:42Matrix Spike (7I11030-MS1) Source: CA13915-04 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L10.0 200 75-1251036.80 U205 Arsenic ug/L10.0 200 75-12510138.2239 Barium ug/L1.00 20.0 75-1251010.130 U20.1 Beryllium ug/L1.00 20.0 75-125980.360 U19.7 Cadmium ug/L10.0 200 75-1251031.83207 Chromium ug/L10.0 200 75-1251031.10 U206 Cobalt ug/L10.0 200 75-1251023.22206 Copper ug/L10.0 200 75-1251053.10 U210 Lead ug/L10.0 200 75-1251002.20 U201 Nickel ug/L10.0 200 75-1251075.00 U214 Silver ug/L10.0 200 75-1251062.05214 Vanadium ug/L10.0 200 75-125997.82206 Zinc Prepared: 09/11/2017 13:22 Analyzed: 09/12/2017 14:44Matrix Spike Dup (7I11030-MSD1) Page 20 of 25 Page 20 of 26 www.encolabs.com QUALITY CONTROL Metals (Dissolved) by EPA 6000/7000 Series Methods - Quality Control Batch 7I11030 - EPA 3005A Prepared: 09/11/2017 13:22 Analyzed: 09/12/2017 14:44Matrix Spike Dup (7I11030-MSD1) Continued Source: CA13915-04 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L10.0 200 2075-125106 46.80 U213 Arsenic ug/L10.0 200 2075-125103 238.2244 Barium ug/L1.00 20.0 2075-125102 10.130 U20.3 Beryllium ug/L1.00 20.0 2075-125101 20.360 U20.1 Cadmium ug/L10.0 200 2075-125105 21.83211 Chromium ug/L10.0 200 2075-125104 11.10 U208 Cobalt ug/L10.0 200 2075-125103 13.22209 Copper ug/L10.0 200 2075-125106 0.93.10 U212 Lead ug/L10.0 200 2075-125104 42.20 U209 Nickel ug/L10.0 200 2075-125109 25.00 U217 Silver ug/L10.0 200 2075-125108 22.05219 Vanadium ug/L10.0 200 2075-125101 27.82210 Zinc Prepared: 09/11/2017 13:22 Analyzed: 09/12/2017 14:47Post Spike (7I11030-PS1) Source: CA13915-04 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag mg/L0.0100 0.200 80-120105-0.001940.209 Arsenic mg/L0.0100 0.200 80-1201020.03820.242 Barium mg/L0.00100 0.0200 80-120101-0.0002560.0202 Beryllium mg/L0.00100 0.0200 80-120100-4.52E-50.0199 Cadmium mg/L0.0100 0.200 80-1201040.001830.211 Chromium mg/L0.0100 0.200 80-1201030.0003480.206 Cobalt mg/L0.0100 0.200 80-1201020.003220.207 Copper mg/L0.0100 0.200 80-120105-9.94E-50.210 Lead mg/L0.0100 0.200 80-1201019.82E-50.202 Nickel mg/L0.0100 0.200 80-1201010.0003950.202 Silver mg/L0.0100 0.200 80-1201080.002050.218 Vanadium mg/L0.0100 0.200 80-1201000.007820.208 Zinc Batch 7I12020 - EPA 3005A Prepared: 09/12/2017 12:39 Analyzed: 09/15/2017 10:33Blank (7I12020-BLK2) RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L2.000.370 U Antimony ug/L3.000.910 U Selenium ug/L1.000.110 U Thallium Prepared: 09/12/2017 12:39 Analyzed: 09/15/2017 10:41LCS (7I12020-BS1) RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L2.00 200 80-120105210 Antimony ug/L3.00 200 80-120103207 Selenium ug/L1.00 200 80-120100200 Thallium Page 21 of 25 Page 21 of 26 www.encolabs.com QUALITY CONTROL Metals (Dissolved) by EPA 6000/7000 Series Methods - Quality Control Batch 7I12020 - EPA 3005A Prepared: 09/12/2017 12:39 Analyzed: 09/15/2017 10:45Matrix Spike (7I12020-MS1) Source: CA13915-06 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L2.00 200 75-125990.370 U197 Antimony ug/L3.00 200 75-1251030.910 U206 Selenium ug/L1.00 200 75-125960.220191 Thallium Prepared: 09/12/2017 12:39 Analyzed: 09/15/2017 10:49Matrix Spike Dup (7I12020-MSD1) Source: CA13915-06 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L2.00 200 2075-125103 40.370 U205 Antimony ug/L3.00 200 2075-125103 0.40.910 U205 Selenium ug/L1.00 200 2075-12598 20.220195 Thallium Prepared: 09/12/2017 12:39 Analyzed: 09/15/2017 10:53Post Spike (7I12020-PS1) Source: CA13915-06 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L2.00 200 80-1201020.0143204 Antimony ug/L3.00 200 80-1201030.0842205 Selenium ug/L1.00 200 80-120990.220198 Thallium QUALITY CONTROL Metals by EPA 6000/7000 Series Methods - Quality Control Batch 7I19035 - EPA 3050B Prepared: 09/20/2017 14:02 Analyzed: 09/22/2017 14:00Blank (7I19035-BLK2) RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag mg/kg wet0.5000.250 U Antimony mg/kg wet1.000.910 U Selenium Prepared: 09/20/2017 14:02 Analyzed: 09/25/2017 12:44Blank (7I19035-BLK3) RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag mg/kg wet1.000.0370 U Thallium Prepared: 09/20/2017 14:02 Analyzed: 09/22/2017 14:03LCS (7I19035-BS2) RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag mg/kg wet0.500 5.00 80-1201004.99 Antimony mg/kg wet1.00 50.0 80-1209848.9 Selenium Prepared: 09/20/2017 14:02 Analyzed: 09/25/2017 12:46LCS (7I19035-BS3) RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag mg/kg wet1.00 5.00 80-1201045.22 Thallium Page 22 of 25 Page 22 of 26 www.encolabs.com QUALITY CONTROL Metals by EPA 6000/7000 Series Methods - Quality Control Batch 7I19035 - EPA 3050B Prepared: 09/20/2017 14:02 Analyzed: 09/22/2017 14:09Matrix Spike (7I19035-MS2) Source: AA06605-02 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag mg/kg dry6.37 6.30 75-1253.18 U3.18 UD QM-07Antimony mg/kg dry12.7 63.0 75-1256011.6 U37.7 D QM-07Selenium Prepared: 09/20/2017 14:02 Analyzed: 09/25/2017 12:48Matrix Spike (7I19035-MS3) Source: AA06605-02 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag mg/kg dry12.7 6.30 75-125990.471 U6.23 JD Thallium Prepared: 09/20/2017 14:02 Analyzed: 09/22/2017 14:12Matrix Spike Dup (7I19035-MSD2) Source: AA06605-02 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag mg/kg dry6.37 6.37 2075-1253.18 U3.18 UD QM-07Antimony mg/kg dry12.7 63.7 2075-12571 1811.6 U45.1 D QM-07Selenium Prepared: 09/20/2017 14:02 Analyzed: 09/25/2017 12:49Matrix Spike Dup (7I19035-MSD3) Source: AA06605-02 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag mg/kg dry12.7 6.37 2075-125104 70.471 U6.65 JD Thallium Prepared: 09/22/2017 08:00 Analyzed: 09/22/2017 14:17Post Spike (7I19035-PS2) Source: AA06605-02 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L0.500 4.90 75-12594-0.02874.60 Antimony ug/L1.00 49.0 75-125101-0.16949.3 Selenium Prepared: 09/25/2017 10:00 Analyzed: 09/25/2017 12:52Post Spike (7I19035-PS3) Source: AA06605-02 RPD%RECSourceSpike MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResultFlag ug/L1.00 4.90 75-1251040.01925.13 Thallium Page 23 of 25 Page 23 of 26 www.encolabs.com FLAGS/NOTES AND DEFINITIONS The sample was analyzed at dilution. The analyte was detected in the associated method blank. The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. MRL E U J D B PQL: Practical Quantitation Limit.PQL The spike recovery was outside acceptance limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. QM-07 The Reporting Limit for this analyte has been raised to account for matrix interference.R-01 Page 24 of 25 Page 24 of 26 Page 25 of 26 Page 26 of 26