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HomeMy WebLinkAboutFA-831_15440_CA_LTR_20231031  WithersRavenel Our People. Your Success.    115 MacKenan Drive | Cary, NC 27511  t: 919.469.3340 | f: 919.467.6008 | www.withersravenel.com | License No. F‐1479  Asheville | Cary | Charlotte | Greensboro | Lumberton | Pittsboro | Raleigh | Southern Pines | Wilmington        October 31, 2023    State of North Carolina  Department of Environmental Quality  Federal & State Lead Program  Division of Waste Management‐Underground Storage Tank Section  1646 Mail Service Center  Raleigh, North Carolina 27699‐1646    Attn:  Mr. Hassan Osman  Letter Report – Groundwater & Supply Well Sampling  Former Floyd Carthens Property (Adjacent C‐Store)   1297 South Old Wire Road  Red Springs, Hoke County, North Carolina  Groundwater Incident Number: 15440  UST Number: FA‐831  NCDEQ Contract # N70522‐C  WR Project Number:  23‐0307‐BP    Mr. Osman:  WithersRavenel, Inc. (WR) has completed groundwater sampling the location, as described in our  proposal numbered TA‐01 for the above referenced site under Contract # N75022‐C, approved  by the UST Section on September 11, 2023.  WR Personnel mobilized to the site (Figure 1) on  September 29, 2023 to complete activities associated with the current TA.  WR was originally  tasked with the collection and analysis of a supply well sample from on‐site well WSW‐1, however,  during WR’s visit to the location the well was inactive.  For this reason, WSW‐1 was not sampled.   NCDEQ had also requested that WR determine the status of supply wells WSW‐2 and WSW‐3  and the willingness of the owners of those wells to accept water line connections to the properties.   WR personnel attempted to contact the owners of these wells while on‐site but neither was  available to obtain access for sampling of the wells or discussions related to water line connections.      Groundwater Sampling – MW‐1  On arrival, WR opened and gauged monitoring well MW‐1 with a decontaminated electronic water  level indicator.  Groundwater was measured within MW‐1 to lie 8.95‐ft beneath the well’s top of  casing (TOC).  Following gauging, the well was purged with a new, disposable polyethylene (PE)  bailer until a total of three volumes of groundwater had been removed.  Following purging and  after having allowed sufficient time for groundwater recovery within the well, monitoring well  MW‐1 was sampled with the dedicated bailer.  Samples collected from MW‐1 were submitted to  Waypoint Analytical, LLC (Waypoint) for laboratory analysis by Standard Method (SM) 6200B.       Former Floyd Carthens Property (Adjacent C‐Store) WR Project # 23‐0307‐BP  Letter Report October 2023  2      Laboratory results associated with analysis of the sample retained from MW‐1 showed the  following:     Several targeted compounds were reported in the sample from MW‐1.   Naphthalene, n‐propylbenzene, 1,2,4‐trimethylbenzene and total xylenes were each reported  at concentrations exceeding their respective NC 2L Standards.   No compounds were reported at levels exceeding their respective Gross Contaminant Levels  (GCLs).      Laboratory results are shown in Table B‐4 (attached) and included in Appendix A.  Field Notes and  site photographs are also included as an attachment.      WR appreciates the opportunity to be of service in the completion of these assessment activities.   Should you have questions, comments, or require additional information, please contact WR at  your earliest convenience.    Cordially,  WithersRavenel    Kevin B. Buchanan   Project Manager                               FIGURE     OLD WIRE RD MUSTANG DRFORMER UST AREA FORMER PUMP ISLAND 1 MW-1 KBBMJDRAWN BY:10/10/202323-0307-BP1SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:SITE MAPWithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 license #: F-1479 | www.withersravenel.com1"=30 'LEGEND SUPPLY WELL LOCATION NOTES: 1.) 2019 AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT.FLOYD CARTHENS PROPERTY(ADJACENT FORMER C-STORE)TF # 15440 / UST # FA-8311297 SOUTH OLD WIRE ROADRED SPRINGS, HOKE COUNTY, NC1 GRAPHIC SCALE 1 inch = 30 ft. 0 3015 60                               TABLE B‐4        CalculatedAcetoneBenzenen‐Butylbenzenesec‐ButylbenzeneEthylbenzeneIsopropylbenzene (Cumene)p‐IsopropyltolueneNaphthalenen‐PropylbenzeneToluene1,2,4‐Trimethylbenzene1,3,5‐TrimethylbenzeneTotal XylenesC5‐C8 AliphaticsC9‐C12 AliphaticsC9‐C22 Aromatics67‐64‐171‐43‐2 104‐51‐8 135‐98‐8 100‐41‐498‐82‐899‐87‐691‐20‐3 103‐65‐1 108‐88‐395‐63‐6 108‐67‐8 1330‐20‐7‐‐‐ ‐‐‐ ‐‐‐11/29/2021<10.01.84 5.84 2.82 42.7 8.48 0.867 32.2 22 25.6 491 88 262188 1,470 75510/18/2022<125 <59.47<5157 12.3<5103 37.4 146 367 111 1030NA NA NA9/29/2023<1000 <50.0 <50.0 <50.0400<50.0 <50.02070 120 72 1100 320 2760NA NA NA11/29/2021<10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <0.500 <0.500 <0.500 <0.500 <0.500NA NA NA10/18/2022 10.2<1 <1 <1 <1 <1 <1 <5 <1 <1 <1 <1 <10NA NA NA6000 1 70 70 600 70 25 6 70 600 400 400 500 400 700 2006,000,000 5,000 5,900 8,800 80,000 30,500 11,700 6,000 26,100 260,000 28,500 24,100 50,000‐‐‐ ‐‐‐ ‐‐‐‐‐‐5‐‐‐ ‐‐‐700‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐1,000‐‐‐ ‐‐‐10,000‐‐‐ ‐‐‐ ‐‐‐Notes:1)2)3)4)5)6)Result=Result Exceeds Laboratory Detection LimitsResult=Result Exceeds 2L StandardResult=Result Exceeds GCL ValueResult=Result Exceeds 2L & MCL Value (Applies only to samples obtained from water supply wells)US EPA MCL = "Maximum Contaminant Level" ‐ The maximum permissible level of a contaminant  as established by the US EPA. MADEP‐VPHRED SPRINGS, HOKE COUNTY, NCOnly those compounds detected in one or more samples shown hereon.Calculated total xylenes concentration is the sum of m,p‐xylenes and o‐xylenes.  See laboratory report for separate values.All results provided in ug/L (micrograms per liter) or parts per billionINCIDENT NUMBER: 15440Date CollectedSM6200BNC 2L Standard ‐ North Carolina Groundwater Quality Standard as per NC Administrative Code 15A NCAC 02L (Comprehensive Tables for Corrective Action Guidelines, September 2022).GCLs for Groundwater = NCDENR UST Section Gross Contamination Levels for Groundwater (Comprehensive Tables for Corrective Action Guidelines, September 2022).NC 2L StandardGCLs for Groundwater    (μg/L)US EPA MCLMW‐1Sample IDTABLE B‐4SUMMARY OF GROUNDWATER ANALYTICAL RESULTSFLOYD CARTHENS PROPERTY (ADJACENT FORMER C‐STORE)1297 SOUTH OLD WIRE ROADWSW‐1                                 APPENDIX A    LABORATORY REPORT & CHAIN OF CUSTODY         Laboratory's liability in any claim relating to analyses performed shall be limited to, at laboratory's option, repeating the analysis in question at laboratory's expense, or the refund of the charges paid for performance of said analysis.   10/10/2023 Withers & Ravenel Kevin Buchanan 115 Mackenan Dr. BUILDING 117 Cary, NC, 27511 Ref: Analytical Testing Lab Report Number: 23-276-0017 Client Project Description: Floyd Property 23-0307-BP Dear Kevin Buchanan: Waypoint Analytical, LLC (Charlotte) received sample(s) on 10/3/2023 for the analyses presented in the following report. The above referenced project has been analyzed per your instructions. The analyses were performed in accordance with the applicable analytical method. The analytical data has been validated using standard quality control measures performed as required by the analytical method. Quality Assurance, method validations, instrumentation maintenance and calibration for all parameters were performed in accordance with guidelines established by the USEPA (including 40 CFR 136 Method Update Rule May 2021) unless otherwise indicated. Certain parameters (chlorine, pH, dissolved oxygen, sulfite...) are required to be analyzed within 15 minutes of sampling. Usually, but not always, any field parameter analyzed at the laboratory is outside of this holding time. Refer to sample analysis time for confirmation of holding time compliance. The results are shown on the attached Report of Analysis(s). Results for solid matrices are reported on an as- received basis unless otherwise indicated. This report shall not be reproduced except in full and relates only to the samples included in this report. Please do not hesitate to contact me or client services if you have any questions or need additional information. Sincerely, Angela D Overcash Senior Project Manager Page 1 of 16 Certification Summary Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC State Program Lab ID Expiration Date 07/31/202437735State ProgramNorth Carolina 12/31/2023402State ProgramNorth Carolina 07/31/202499012State ProgramSouth Carolina 12/31/202399012State ProgramSouth Carolina Page 1 of 1 00016/23-276-0017 Page 2 of 16 Report Number: Sample Summary Table Client Project Description: 23-276-0017 Floyd Property 23-0307-BP Lab No Client Sample ID Matrix Date Collected Date Received 09/29/2023 11:20Aqueous 96745 MW-1 10/03/2023 13:00 Page 3 of 16 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 23-276-0017 Report Limit Project:Floyd Property V 96745MW-1 400 10/06/2023 08:196200BEthylbenzeneµg/L 50.0 2070 10/06/2023 08:196200BNaphthaleneµg/L 100 120 10/06/2023 08:196200Bn-Propylbenzene µg/L 50.0 72.0 10/06/2023 08:196200BTolueneµg/L 50.0 1100 10/06/2023 08:196200B1,2,4-Trimethylbenzene µg/L 50.0 320 10/06/2023 08:196200B1,3,5-Trimethylbenzene µg/L 50.0 815 10/06/2023 08:196200Bo-Xylene µg/L 50.0 1940 10/06/2023 08:196200Bm,p-Xylene µg/L 100 2760 10/06/2023 08:196200BXylene (Total)µg/L 50.0 Page 4 of 16 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-276-0017 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Kevin Buchanan Cary 23-0307-BP Received : 10/03/2023 Floyd Property Report Date : 10/10/2023 Sample ID : Lab No : Sampled:MW-1 96745 Matrix: 9/29/2023 11:20 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <1000 µg/L 1000Acetone 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0Benzene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0Bromobenzene 100 10/06/23 08:19 6200BMSA <100 µg/L 100Bromochloromethane 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0Bromodichloromethane 100 10/06/23 08:19 6200BMSA <500 µg/L 500Bromoform 100 10/06/23 08:19 6200BMSA <100 µg/L 100Bromomethane 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0n-Butylbenzene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0sec-Butyl benzene 100 10/06/23 08:19 6200BMSA <200 µg/L 200tert-Butyl benzene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0Carbon Tetrachloride 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0Chlorobenzene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0Chlorodibromomethane 100 10/06/23 08:19 6200BMSA <100 µg/L 100Chloroethane 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0Chloroform 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0Chloromethane 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.02-Chlorotoluene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.04-Chlorotoluene 100 10/06/23 08:19 6200BMSA <200 µg/L 2001,2-Dibromo-3-Chloropropane 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.01,2-Dibromoethane 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0Dibromomethane 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.01,2-Dichlorobenzene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.01,3-Dichlorobenzene 100 10/06/23 08:19 6200BMSA Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 5 of 16 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-276-0017 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Kevin Buchanan Cary 23-0307-BP Received : 10/03/2023 Floyd Property Report Date : 10/10/2023 Sample ID : Lab No : Sampled:MW-1 96745 Matrix: 9/29/2023 11:20 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <50.0 µg/L 50.01,4-Dichlorobenzene 100 10/06/23 08:19 6200BMSA <500 µg/L 500Dichlorodifluoromethane 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.01,1-Dichloroethane 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.01,2-Dichloroethane 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.01,1-Dichloroethene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0cis-1,2-Dichloroethene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0trans-1,2-Dichloroethene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.01,2-Dichloropropane 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.01,3-Dichloropropane 100 10/06/23 08:19 6200BMSA <200 µg/L 2002,2-Dichloropropane 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.01,1-Dichloropropene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0cis-1,3-Dichloropropene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0trans-1,3-Dichloropropene 100 10/06/23 08:19 6200BMSA <20000 µg/L 20000Ethanol 100 10/06/23 08:19 6200BMSA 400 µg/L 50.0Ethylbenzene 100 10/06/23 08:19 6200BMSA <300 µg/L 300Hexachlorobutadiene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0Di-Isopropyl Ether (DIPE)100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0Isopropylbenzene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.04-Isopropyl toluene 100 10/06/23 08:19 6200BMSA <100 µg/L 1002-Hexanone 100 10/06/23 08:19 6200BMSA <500 µg/L 500Methyl Ethyl Ketone (MEK)100 10/06/23 08:19 6200BMSA <200 µg/L 200Methylene Chloride 100 10/06/23 08:19 6200BMSA <100 µg/L 100Methyl tert-butyl ether (MTBE)100 10/06/23 08:19 6200BMSA Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 6 of 16 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-276-0017 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Kevin Buchanan Cary 23-0307-BP Received : 10/03/2023 Floyd Property Report Date : 10/10/2023 Sample ID : Lab No : Sampled:MW-1 96745 Matrix: 9/29/2023 11:20 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <100 µg/L 1004-Methyl-2-Pentanone 100 10/06/23 08:19 6200BMSA 2070 µg/L 100Naphthalene 100 10/06/23 08:19 6200BMSA 120 µg/L 50.0n-Propylbenzene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0Styrene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.01,1,1,2-Tetrachloroethane 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.01,1,2,2-Tetrachloroethane 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0Tetrachloroethene 100 10/06/23 08:19 6200BMSA 72.0 µg/L 50.0Toluene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.01,2,3-Trichlorobenzene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.01,2,4-Trichlorobenzene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.01,1,1-Trichloroethane 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.01,1,2-Trichloroethane 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0Trichloroethene 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0Trichlorofluoromethane 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.01,2,3-Trichloropropane 100 10/06/23 08:19 6200BMSA 1100 µg/L 50.01,2,4-Trimethylbenzene 100 10/06/23 08:19 6200BMSA 320 µg/L 50.01,3,5-Trimethylbenzene 100 10/06/23 08:19 6200BMSA <500 µg/L 500Vinyl Acetate 100 10/06/23 08:19 6200BMSA <50.0 µg/L 50.0Vinyl Chloride 100 10/06/23 08:19 6200BMSA 1940 µg/L 100m,p-Xylene 100 10/06/23 08:19 6200BMSA 815 µg/L 50.0o-Xylene 100 10/06/23 08:19 6200BMSA Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 7 of 16 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-276-0017 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Kevin Buchanan Cary 23-0307-BP Received : 10/03/2023 Floyd Property Report Date : 10/10/2023 Sample ID : Lab No : Sampled:MW-1 96745 Matrix: 9/29/2023 11:20 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF 2760 µg/L 50.0Xylene (Total)100 10/06/23 08:19 6200B Surrogate: 4-Bromofluorobenzene 94.4 Limits: 70-130%10/06/23 08:19100 MSA V38792 Surrogate: Dibromofluoromethane 99.2 Limits: 70-130%10/06/23 08:19100 MSA V38792 Surrogate: 1,2-Dichloroethane - d4 90.8 Limits: 70-130%10/06/23 08:19100 MSA V38792 Surrogate: Toluene-d8 95.8 Limits: 70-130%10/06/23 08:19100 MSA V38792 Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 8 of 16 Quality Control Data 23-276-0017Report No: Project Description: Client ID:Withers & Ravenel Floyd Property QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38792QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38791 Associated Lab Samples: 96745 LRB-V38791 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLBlank ResultUnits % Recovery % Rec Limits 10/06/23 02:5710.0< 10.0µg/LAcetone 10/06/23 02:570.500< 0.500µg/LBenzene 10/06/23 02:570.500< 0.500µg/LBromobenzene 10/06/23 02:571.00< 1.00µg/LBromochloromethane 10/06/23 02:570.500< 0.500µg/LBromodichloromethane 10/06/23 02:575.00< 5.00µg/LBromoform 10/06/23 02:571.00< 1.00µg/LBromomethane 10/06/23 02:570.500< 0.500µg/Ln-Butylbenzene 10/06/23 02:570.500< 0.500µg/Lsec-Butyl benzene 10/06/23 02:572.00< 2.00µg/Ltert-Butyl benzene 10/06/23 02:570.500< 0.500µg/LCarbon Tetrachloride 10/06/23 02:570.500< 0.500µg/LChlorobenzene 10/06/23 02:570.500< 0.500µg/LChlorodibromomethane 10/06/23 02:571.00< 1.00µg/LChloroethane 10/06/23 02:570.500< 0.500µg/LChloroform 10/06/23 02:570.500< 0.500µg/LChloromethane 10/06/23 02:570.500< 0.500µg/L2-Chlorotoluene 10/06/23 02:570.500< 0.500µg/L4-Chlorotoluene 10/06/23 02:572.00< 2.00µg/L1,2-Dibromo-3-Chloropropane 10/06/23 02:570.500< 0.500µg/L1,2-Dibromoethane 10/06/23 02:570.500< 0.500µg/LDibromomethane 10/06/23 02:570.500< 0.500µg/L1,2-Dichlorobenzene 10/06/23 02:570.500< 0.500µg/L1,3-Dichlorobenzene 10/06/23 02:570.500< 0.500µg/L1,4-Dichlorobenzene 10/06/23 02:575.00< 5.00µg/LDichlorodifluoromethane 10/06/23 02:570.500< 0.500µg/L1,1-Dichloroethane 10/06/23 02:570.500< 0.500µg/L1,2-Dichloroethane Page 1 of 6Date:10/10/2023 08:24 AM Page 9 of 16 Quality Control Data 23-276-0017Report No: Project Description: Client ID:Withers & Ravenel Floyd Property QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38792QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38791 Associated Lab Samples: 96745 LRB-V38791 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLBlank ResultUnits % Recovery % Rec Limits 10/06/23 02:570.500< 0.500µg/L1,1-Dichloroethene 10/06/23 02:570.500< 0.500µg/Lcis-1,2-Dichloroethene 10/06/23 02:570.500< 0.500µg/Ltrans-1,2-Dichloroethene 10/06/23 02:570.500< 0.500µg/L1,2-Dichloropropane 10/06/23 02:570.500< 0.500µg/L1,3-Dichloropropane 10/06/23 02:572.00< 2.00µg/L2,2-Dichloropropane 10/06/23 02:570.500< 0.500µg/L1,1-Dichloropropene 10/06/23 02:570.500< 0.500µg/Lcis-1,3-Dichloropropene 10/06/23 02:570.500< 0.500µg/Ltrans-1,3-Dichloropropene 10/06/23 02:57200< 200µg/LEthanol 10/06/23 02:570.500< 0.500µg/LEthylbenzene 10/06/23 02:573.00< 3.00µg/LHexachlorobutadiene 10/06/23 02:570.500< 0.500µg/LDi-Isopropyl Ether (DIPE) 10/06/23 02:570.500< 0.500µg/LIsopropylbenzene 10/06/23 02:570.500< 0.500µg/L4-Isopropyl toluene 10/06/23 02:571.00< 1.00µg/L2-Hexanone 10/06/23 02:575.00< 5.00µg/LMethyl Ethyl Ketone (MEK) 10/06/23 02:572.00< 2.00µg/LMethylene Chloride 10/06/23 02:571.00< 1.00µg/LMethyl tert-butyl ether (MTBE) 10/06/23 02:571.00< 1.00µg/L4-Methyl-2-Pentanone 10/06/23 02:571.00< 1.00µg/LNaphthalene 10/06/23 02:570.500< 0.500µg/Ln-Propylbenzene 10/06/23 02:570.500< 0.500µg/LStyrene 10/06/23 02:570.500< 0.500µg/L1,1,1,2-Tetrachloroethane 10/06/23 02:570.500< 0.500µg/L1,1,2,2-Tetrachloroethane 10/06/23 02:570.500< 0.500µg/LTetrachloroethene 10/06/23 02:570.500< 0.500µg/LToluene Page 2 of 6Date:10/10/2023 08:24 AM Page 10 of 16 Quality Control Data 23-276-0017Report No: Project Description: Client ID:Withers & Ravenel Floyd Property QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38792QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38791 Associated Lab Samples: 96745 LRB-V38791 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLBlank ResultUnits % Recovery % Rec Limits 10/06/23 02:570.500< 0.500µg/L1,2,3-Trichlorobenzene 10/06/23 02:570.500< 0.500µg/L1,2,4-Trichlorobenzene 10/06/23 02:570.500< 0.500µg/L1,1,1-Trichloroethane 10/06/23 02:570.500< 0.500µg/L1,1,2-Trichloroethane 10/06/23 02:570.500< 0.500µg/LTrichloroethene 10/06/23 02:570.500< 0.500µg/LTrichlorofluoromethane 10/06/23 02:570.500< 0.500µg/L1,2,3-Trichloropropane 10/06/23 02:570.500< 0.500µg/L1,2,4-Trimethylbenzene 10/06/23 02:570.500< 0.500µg/L1,3,5-Trimethylbenzene 10/06/23 02:575.00< 5.00µg/LVinyl Acetate 10/06/23 02:570.500< 0.500µg/LVinyl Chloride 10/06/23 02:571.00< 1.00µg/Lm,p-Xylene 10/06/23 02:570.500< 0.500µg/Lo-Xylene 10/06/23 02:574-Bromofluorobenzene (S)94.2 70-130 10/06/23 02:57Dibromofluoromethane (S)99.2 70-130 10/06/23 02:571,2-Dichloroethane - d4 (S)92.2 70-130 10/06/23 02:57Toluene-d8 (S)94.8 70-130 LCS-V38791 LCSD-V38791Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 41.2 10310642.540.0µg/LAcetone 40-160 3.1 20.0 20.1 10110420.720.0µg/LBenzene 70-130 2.9 20.0 18.7 93.594.518.920.0µg/LBromobenzene 70-130 1.0 20.0 19.9 99.510420.820.0µg/LBromochloromethane 70-130 4.4 20.0 18.8 94.097.519.520.0µg/LBromodichloromethane 70-130 3.6 20.0 Page 3 of 6Date:10/10/2023 08:24 AM Page 11 of 16 Quality Control Data 23-276-0017Report No: Project Description: Client ID:Withers & Ravenel Floyd Property QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38792QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38791 LCS-V38791 LCSD-V38791Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 17.9 89.592.018.420.0µg/LBromoform 70-130 2.7 20.0 24.2 12113827.520.0µg/LBromomethane 60-140 12.7 20.0 19.4 97.098.519.720.0µg/Ln-Butylbenzene 70-130 1.5 20.0 19.1 95.597.019.420.0µg/Lsec-Butyl benzene 70-130 1.5 20.0 18.6 93.094.018.820.0µg/Ltert-Butyl benzene 70-130 1.0 20.0 19.6 98.010520.920.0µg/LCarbon Tetrachloride 70-130 6.4 20.0 19.5 97.598.019.620.0µg/LChlorobenzene 70-130 0.5 20.0 18.3 91.593.518.720.0µg/LChlorodibromomethane 70-130 2.1 20.0 18.7 93.598.019.620.0µg/LChloroethane 60-140 4.6 20.0 19.2 96.099.019.820.0µg/LChloroform 70-130 3.0 20.0 16.8 84.093.018.620.0µg/LChloromethane 60-140 10.1 20.0 19.0 95.095.519.120.0µg/L2-Chlorotoluene 70-130 0.5 20.0 18.8 94.096.519.320.0µg/L4-Chlorotoluene 70-130 2.6 20.0 18.6 93.010320.620.0µg/L1,2-Dibromo-3-Chloropropane 70-130 10.2 20.0 19.5 97.598.019.620.0µg/L1,2-Dibromoethane 70-130 0.5 20.0 19.2 96.097.019.420.0µg/LDibromomethane 70-130 1.0 20.0 19.3 96.599.519.920.0µg/L1,2-Dichlorobenzene 70-130 3.0 20.0 19.4 97.099.019.820.0µg/L1,3-Dichlorobenzene 70-130 2.0 20.0 18.9 94.596.519.320.0µg/L1,4-Dichlorobenzene 70-130 2.0 20.0 14.4 72.076.015.220.0µg/LDichlorodifluoromethane 60-140 5.4 20.0 19.4 97.099.019.820.0µg/L1,1-Dichloroethane 70-130 2.0 20.0 18.4 92.093.018.620.0µg/L1,2-Dichloroethane 70-130 1.0 20.0 19.1 95.599.019.820.0µg/L1,1-Dichloroethene 70-130 3.5 20.0 18.8 94.097.519.520.0µg/Lcis-1,2-Dichloroethene 70-130 3.6 20.0 19.0 95.098.019.620.0µg/Ltrans-1,2-Dichloroethene 70-130 3.1 20.0 19.3 96.510020.020.0µg/L1,2-Dichloropropane 70-130 3.5 20.0 Page 4 of 6Date:10/10/2023 08:24 AM Page 12 of 16 Quality Control Data 23-276-0017Report No: Project Description: Client ID:Withers & Ravenel Floyd Property QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38792QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38791 LCS-V38791 LCSD-V38791Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 19.2 96.097.519.520.0µg/L1,3-Dichloropropane 70-130 1.5 20.0 16.6 83.084.516.920.0µg/L2,2-Dichloropropane 70-130 1.7 20.0 20.7 10410721.320.0µg/L1,1-Dichloropropene 70-130 2.8 20.0 18.6 93.095.019.020.0µg/Lcis-1,3-Dichloropropene 70-130 2.1 20.0 18.4 92.097.019.420.0µg/Ltrans-1,3-Dichloropropene 70-130 5.2 20.0 491 98.2104522500µg/LEthanol 60-140 6.1 20.0 18.7 93.596.019.220.0µg/LEthylbenzene 70-130 2.6 20.0 18.5 92.593.018.620.0µg/LHexachlorobutadiene 70-130 0.5 20.0 18.9 94.596.519.320.0µg/LDi-Isopropyl Ether (DIPE)70-130 2.0 20.0 19.6 98.098.519.720.0µg/LIsopropylbenzene 70-130 0.5 20.0 19.0 95.096.519.320.0µg/L4-Isopropyl toluene 70-130 1.5 20.0 16.9 84.589.517.920.0µg/L2-Hexanone 60-140 5.7 20.0 17.0 85.091.518.320.0µg/LMethyl Ethyl Ketone (MEK)60-140 7.3 20.0 18.1 90.593.018.620.0µg/LMethylene Chloride 70-130 2.7 20.0 19.9 99.510220.320.0µg/LMethyl tert-butyl ether (MTBE)70-130 1.9 20.0 18.3 91.594.018.820.0µg/L4-Methyl-2-Pentanone 60-140 2.6 20.0 22.8 11411222.420.0µg/LNaphthalene 70-130 1.7 20.0 19.4 97.098.519.720.0µg/Ln-Propylbenzene 70-130 1.5 20.0 19.0 95.097.019.420.0µg/LStyrene 70-130 2.0 20.0 19.5 97.510020.020.0µg/L1,1,1,2-Tetrachloroethane 70-130 2.5 20.0 18.2 91.093.518.720.0µg/L1,1,2,2-Tetrachloroethane 70-130 2.7 20.0 18.9 94.597.519.520.0µg/LTetrachloroethene 70-130 3.1 20.0 19.9 99.510320.520.0µg/LToluene 70-130 2.9 20.0 23.6 11812124.220.0µg/L1,2,3-Trichlorobenzene 70-130 2.5 20.0 20.5 10310621.120.0µg/L1,2,4-Trichlorobenzene 70-130 2.8 20.0 18.7 93.599.519.920.0µg/L1,1,1-Trichloroethane 70-130 6.2 20.0 Page 5 of 6Date:10/10/2023 08:24 AM Page 13 of 16 Quality Control Data 23-276-0017Report No: Project Description: Client ID:Withers & Ravenel Floyd Property QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38792QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38791 LCS-V38791 LCSD-V38791Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 19.3 96.510420.720.0µg/L1,1,2-Trichloroethane 70-130 7.0 20.0 21.0 10510821.520.0µg/LTrichloroethene 70-130 2.3 20.0 21.0 10511022.020.0µg/LTrichlorofluoromethane 60-140 4.6 20.0 18.9 94.597.019.420.0µg/L1,2,3-Trichloropropane 70-130 2.6 20.0 18.9 94.596.019.220.0µg/L1,2,4-Trimethylbenzene 70-130 1.5 20.0 19.1 95.597.019.420.0µg/L1,3,5-Trimethylbenzene 70-130 1.5 20.0 17.3 86.587.517.520.0µg/LVinyl Acetate 60-140 1.1 20.0 18.6 93.096.019.220.0µg/LVinyl Chloride 60-140 3.1 20.0 39.5 98.710140.440.0µg/Lm,p-Xylene 70-130 2.2 20.0 18.5 92.595.019.020.0µg/Lo-Xylene 70-130 2.6 20.0 94.294.04-Bromofluorobenzene (S)70-130 101100Dibromofluoromethane (S)70-130 94.095.41,2-Dichloroethane - d4 (S)70-130 96.894.8Toluene-d8 (S)70-130 Page 6 of 6Date:10/10/2023 08:24 AM Page 14 of 16 Fed Ex UPS US Postal Client Lab Courier Other : Shipment Receipt Form Customer Number: Customer Name: Report Number:23-276-0017 Withers & Ravenel 01221 Shipping Method Shipping container/cooler uncompromised? Thermometer ID:IRT15 1.7C Chain of Custody (COC) present?Yes No Yes No Not Present Yes No Not Present Yes No COC agrees with sample label(s)? Yes No COC properly completed Samples in proper containers? Sample containers intact? Sufficient sample volume for indicated test(s)? All samples received within holding time? Cooler temperature in compliance? Yes No Yes No Yes No Yes No Yes No Yes NoCooler/Samples arrived at the laboratory on ice. Samples were considered acceptable as cooling process had begun. Yes No Yes No N/A Yes No N/A Yes No N/ASoil VOA method 5035 – compliance criteria met Water - Sample containers properly preserved Water - VOA vials free of headspace Yes No N/A Trip Blanks received with VOAs Low concentration EnCore samplers (48 hr) High concentration pre-weighed (methanol -14 d) Low conc pre-weighed vials (Sod Bis -14 d) High concentration container (48 hr) Custody seals intact on shipping container/cooler? Custody seals intact on sample bottles? Number of coolers/boxes received Yes No 1 Signature:Angelo Norvell Date & Time:10/03/2023 16:06:50 Special precautions or instructions included? Comments: Page 15 of 16 Page 16 of 16                               APPENDIX B    FIELD NOTES & PHOTOGRAPHIC RECORD           PHOTO 1  MW‐1     PHOTO 2  SAMPLE POINT FOR WSW‐1(INACTIVE)