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HomeMy WebLinkAboutMO-30288_0_CA_SCH_20231212_Pilot Travel Center 7976SITE CHECK REPORT – DIESEL DISPENSER #23 PILOT TRAVEL CENTER #7976 1006 Charlotte Highway Troutman, Iredell County, North Carolina NCDEQ Facility ID #00-0-0000032304 2725 E. Millbrook Road, Suite 121 Raleigh, North Carolina 27604 Telephone 919-871-0999 Fax 737-207-8261 www.oneatlas.com December 1, 2023 Mr. Dan Graham North Carolina Department of Environmental Quality Mooresville Regional Office Division of Waste Management – UST Section 610 East Center Avenue, Suite 301 Mooresville, North Carolina 28115 Re: Site Check Report – Diesel Dispenser 23 Pilot Travel Center #7976 1006 Charlotte Highway Troutman, Iredell County, North Carolina NCDEQ Facility ID #00-0-0000032304 Dear Mr. Graham: ATC Associates of North Carolina, LLC (ATC), on behalf of Pilot Travel Centers, LLC, is submitting this Site Check Report for the referenced facility. This site check was prepared in response to approximately 1 inch of diesel fuel being observed in the under dispenser containment (UDC) of diesel dispenser #23. If you have any questions or require additional information, please contact our office at (919) 871-0999. Sincerely, ATC Associates of North Carolina, LLC Maureen Jackson, P.G. Sam Wakefield Senior Project Manager Program Manager cc: Joey Cupp, Pilot Travel Centers, LLC Pilot Travel Centers #7976 December 1, 2023 NCDEQ Facility ID #00-0-0000032304 Site Check Report-Diesel Dispenser #23 ATC Associates of North Carolina B. 1. 2. 3. 4. 5. C. 1. 2. Carolina, to advance one soil boring as close as possible to diesel dispenser #23. The soil On November 10, 2023, ATC personnel contracted with Ameriprobe of Huntersville, North Site Check Procedure leaking. On this date, the filters were replaced and it was determined the leak had ceased. On November 30, 2023, a Jones & Frank technician found the filters under diesel dispenser 23 via e-mail correspondence. A copy of the UST-17A is provided in Attachment I. behalf of Pilot, submitted a UST-17A: UST Suspected Release 24 Hour Notice to the NCDEQ of diesel dispenser #23. No visual leaks were seen on this date. On October 12, 2023, ATC, on On October 11, 2023, approximately 1 inch of diesel fuel was noted in the bottom of the UDC UST System Testing Site Check Procedures Figures 1 and 2, respectively. identified within 1,000 feet of the source area. A topographic map and site map are attached as supplied to the area; however, it appears at least three water supply wells have been previously commercial area in proximity to Interstate-77 in Troutman, North Carolina. Public water is The subject property and surrounding area are fairly level. The subject property is located in a building, several gasoline and diesel dispenser islands, and other petroleum fueling equipment. The subject property consists of a Pilot Travel Center Truck Stop with one convenience store Provide a Brief Description of Site Characteristics appears incident #24101 has ongoing free product recovery activities from a diesel release. 6, 2002, and UST incident #40728 was issued a Notice of NFA on December 18, 2018. It 40728). UST incident #23692 was issued a Notice of No Further Action (NFA) on September releases appear to have occurred at this location (UST incident numbers 24101, 23692, and Based on a review of available file information on NCDEQ’s website, three previous UST Describe relation of location of current UST system to historical UST releases. No ASTs or surface spills are known to exist at the site. Provide Non-UST Information See Table 2. Provide UST Information See Table 1. Provide UST Owner and Operator Information Site History Pilot Travel Centers #7976 December 1, 2023 NCDEQ Facility ID #00-0-0000032304 Site Check Report-Diesel Dispenser #23 ATC Associates of North Carolina boring was advanced to approximately 6 feet below ground surface (bgs), using a field-decontaminated, stainless-steel hand auger and a macro-core sampler. The location of the soil boring [labelled SB-1(6’)] is provided on Figure 2. 3. Soil Excavation Activities Soil excavation was not performed as part of this site check. D. Site Investigation 1. Field Screening The soil sample was collected at an approximate depth of 6 feet below ground surface (bgs). Upon collection, the soil sample was screened with a photoionization detector (PID). The respective PID reading is provided in Table 3. 2. Soil Sampling Information On November 10, 2023, ATC personnel contracted with Ameriprobe of Huntersville, North Carolina, to advance one soil boring as close as possible to diesel dispenser #23. The soil boring was advanced to approximately 6 feet bgs, using a field-decontaminated, stainless steel hand auger and a macro-core sampler. A soil sample was collected at an approximate depth of 6 feet bgs. The soil encountered at the sampling depth consisted of brown clayey silt. The soil sample was shipped to a N.C. certified laboratory in a chilled cooler following proper chain-of-custody procedures. The soil sample was requested to be analyzed by Total Petroleum Hydrocarbons (TPH)-Gasoline Range Organics (GRO) and TPH-Diesel Range Organics (DRO). 3. Groundwater and Surface Sampling Information Groundwater and surface water samples were not collected during the site check activities. 4. Quality Control Measures The soil sample was placed in laboratory provided jars and vials. The sample was immediately placed on ice and contained in a cooler during transportation. The sample was transported by courier under a chain-of-custody to the laboratory for analyses. 5. Investigation Results Laboratory analytical results of the soil sample collected in proximity to diesel dispenser #23 did not detect TPH-GRO or TPH-DRO concentrations above established State Action Levels. Laboratory analytical results are provided in Table 3. A copy of the laboratory report and chain-of-custody documents are provided in Attachment II. Pilot Travel Centers #7976 December 1, 2023 NCDEQ Facility ID #00-0-0000032304 Site Check Report-Diesel Dispenser #23 ATC Associates of North Carolina E. Conclusion and Recommendations Laboratory analytical results of the soil sample collected in proximity to diesel dispenser #23 did not detect TPH-GRO or TPH-DRO concentrations above established State Action Levels. Based on available information, it appears a release has not occurred from the UDC of diesel dispenser #23. F. Figures Figure 1 – Topographic Map Figure 2 – Site Map G. Tables Table 1 – UST Owner and Operator Information Table 2 – UST/AST System Information Table 3 – Soil Analytical Results H. Attachments I – Notifications and Testing Results II – Laboratory Report and Chain-of-Custody Document TABLES TABLE 1 UST OWNER AND OPERATOR INFORMATION PILOT TRAVEL CENTER #7976 1006 CHARLOTTE HIGHWAY TROUTMAN, IREDELL COUNTY, NORTH CAROLINA NCDEQ FACILITY ID #00-0-0000032304 Revision Date:11/30/2023 Incident Number and Name:Pilot Travel Center #7976 UST ID Number All Facility ID Number 00-0-0000032304 City State Zip Telephone Number Knoxville TN 37909 865-474-3106 City State Zip Telephone Number As Above Street Address Dates of Operation (MM/DD/YY to MM/DD/YY)Name of Owner Dates of Operation (MM/DD/YY to MM/DD/YY)Name of Operator 5508 Lonas Road Pilot Travel Centers, LLC 1991 to present Street Address TABLE 2 UST/AST SYSTEM INFORMATION PILOT TRAVEL CENTER #7976 1006 CHARLOTTE HIGHWAY TROUTMAN, IREDELL COUNTY, NORTH CAROLINA NCDEQ FACILITY ID #00-0-0000032304 Revision Date:11/30/2023 UST ID Number Current/Last Contents Previous Contents Capacity (gallons) Construction Details Tank Dimensions Description of Associated Piping and Pumps Date Tank Installed Status of UST Was Release Associates with the UST System? 1 Diesel None 20,000 DW Steel Unknown Unknown 01/01/91 Active No 2 Diesel None 20,000 DW Steel Unknown Unknown 01/01/91 Active No 3 Gasoline (Prem)None 10,000 DW Steel Unknown Unknown 01/01/91 Active No 4 Gasoline (Reg)None 10,000 DW Steel Unknown Unknown 01/01/91 Active No 5 Gasoline (Reg)None 10,000 DW Steel Unknown Unknown 01/01/91 Active No AST ID Number Current/Last Contents Previous Contents Capacity (gallons) Construction Details Tank Dimensions Description of Associated Piping and Pumps Date Tank Installed Status of AST Was Release Associates with the AST System? Incident Number and Name:Pilot Travel Center #7976 None associated with this site TABLE 3 SOIL ANALYTICAL RESULTS PILOT TRAVEL CENTER #7976 1006 CHARLOTTE HIGHWAY TROUTMAN, IREDELL COUNTY, NORTH CAROLINA NCDEQ FACILITY ID #00-0-0000032304 TP H - G R O TP H - D R O SB-1 (6') Diesel Dispenser #23 6 0.0 11/10/23 0.0918J 1.97J 50 100 Notes: 1. Concentrations are reported in milligrams per kilogram (mg/kg). 2. PID denotes photoionization detector. 4. J denotes compound concentration estimated by the project laboratory. State Action Level (mg/kg) 3. PPM denotes parts per million. Sampling ID Sampling Location Sampling Depth (feet) PID Reading (ppm) Sampling Date EPA Method 8015 FIGURES PR O P E R T Y B O U N D A R Y SB-1 ATTACHMENT I NOTIFCATIONS AND TESTING RESULTS UST-17A UST Suspected Release 24 Hour Notice Do not use this form to report a 24 hour notice of a Pollution Incident. You must use form UST-61, 24 Hour Release and UST Leak Reporting Form. ➢ This form must be used to report to DEQ, within 24 hours of discovery, a Suspected Release from any of the following: a) Failed or inconclusive leak detection or tightness test results. This includes positive test results, such as “Increase”, which indicates the level in the UST system has increased more than 0.2 gph. b) Unusual operating conditions which can include, but are not limited to: the erratic behavior of dispensing equipment; the unexplained presence of water in the tank; the presence of fuel in containment sumps or interstitial spaces; or the degradation of any equipment or element of an underground storage tank system to the point where that equipment or element can not reasonably be expected to perform its intended function. c) Internal inspection results such as, perforations, corrosion holes, weld failures, or other similar defects that indicate a release could have occurred. ➢ If you have more than four UST systems to report suspected releases, then attach additional sheets of the UST-17A form. You only need to list the UST systems at your site that have suspected releases. ➢ Within 7 days of discovery, submit a UST-17B form to document the response activities taken to investigate the suspected release. ➢ Please submit this form to: NCDEQ/DWM, UST Section 1646 Mail Service Center Raleigh, North Carolina 27699-1646 OR Fax to (919) 715-1117 OR UST.Permits@ncdenr.gov I. UST OWNER II. UST FACILITY Name: Name: Facility ID: Address: Address: City: State: Zip: City: County: Person Reporting: Title of Person Reporting: Telephone Number: ( ) Date Submitted: III. UST INFORMATION Tank Number / Size: / / / / Product Stored: Location and/or source of suspected release: (check all that apply) Tank Piping Tank Sump Dispenser Sump Spill Bucket Internal Inspection Other (Explain in comments) Tank Piping Tank Sump Dispenser Sump Spill Bucket Internal Inspection Other (Explain in comments) Tank Piping Tank Sump Dispenser Sump Spill Bucket Internal Inspection Other (Explain in comments) Tank Piping Tank Sump Dispenser Sump Spill Bucket Internal Inspection Other (Explain in comments) Leak detection method or other observation that indicates a suspected release. (e.g., ATG, SIR, visual contamination, fuel in sump, etc.): Failed/Inconclusive date or date that leak detection method suspected release discovered: IV. COMMENTS UST-17A Revised 10/2018 http://www.wastenotnc.org/ ATTACHMENT II LABORATORY REPORT AND CHAIN-OF-CUSTODY DOCUMENTS ANALYTICAL REPORT November 20, 2023 ATC Group Services - NC Pilot Sample Delivery Group:L1677352 Samples Received:11/13/2023 Project Number:7976-605-13 Description:Pilot 7976 Report To:Maureen Jackson 609A Piner Road Suite 115 Wilmington, NC 28409 Entire Report Reviewed By: November 20, 2023 [Preliminary Report] Jeff Carr Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 13:36 1 of 11 November 20, 2023 Jeff Carr Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 14:10 1 of 11 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 4 Sr: Sample Results 5 SB-1 (6') L1677352-01 5 Qc: Quality Control Summary 6 Total Solids by Method 2540 G-2011 6 Volatile Organic Compounds (GC) by Method 8015D/GRO 7 Semi-Volatile Organic Compounds (GC) by Method 8015C 8 Gl: Glossary of Terms 9 Al: Accreditations & Locations 10 Sc: Sample Chain of Custody 11 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 13:36 2 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 14:10 2 of 11 SAMPLE SUMMARY Collected by Collected date/time Received date/time SB-1 (6') L1677352-01 Solid N Reel 11/10/23 09:55 11/13/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2171345 1 11/17/23 17:28 11/17/23 17:41 KDW Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2172689 1 11/15/23 10:20 11/16/23 19:09 NCD Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015C WG2172197 1 11/16/23 21:04 11/17/23 15:36 JAS Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 13:36 3 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 14:10 3 of 11 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Jeff Carr Project Manager 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 13:36 4 of 11 Jeff Carr Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 14:10 4 of 11 SAMPLE RESULTS - 01 L1677352 SB-1 (6') Collected date/time: 11/10/23 09:55 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 75.0 1 11/17/2023 17:41 WG2171345 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 0.0918 B J 0.0289 0.133 1 11/16/2023 19:09 WG2172689 (S) a,a,a-Trifluorotoluene(FID)90.6 77.0-120 11/16/2023 19:09 WG2172689 Semi-Volatile Organic Compounds (GC) by Method 8015C Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) High Fraction 1.97 J 1.03 5.34 1 11/17/2023 15:36 WG2172197 (S) o-Terphenyl 62.0 18.0-148 11/17/2023 15:36 WG2172197 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 13:36 5 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 14:10 5 of 11 QUALITY CONTROL SUMMARYWG2171345 Total Solids by Method 2540 G-2011 L1677352-01 Method Blank (MB) (MB) R4001697-1 11/17/23 17:41 MB Result MB Qualifier MB MDL MB RDL Analyte %%% Total Solids 0.000 L1677357-01 Original Sample (OS) • Duplicate (DUP) (OS) L1677357-01 11/17/23 17:41 • (DUP) R4001697-3 11/17/23 17:41 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte %%%% Total Solids 86.9 86.8 1 0.128 10 Laboratory Control Sample (LCS) (LCS) R4001697-2 11/17/23 17:41 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte %%%% Total Solids 50.0 50.0 100 90.0-110 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 13:36 6 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 14:10 6 of 11 QUALITY CONTROL SUMMARYWG2172689 Volatile Organic Compounds (GC) by Method 8015D/GRO L1677352-01 Method Blank (MB) (MB) R4001057-3 11/16/23 16:14 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/FID) Low Fraction 0.0248 J 0.0217 0.100 (S) a,a,a-Trifluorotoluene(FID)91.7 77.0-120 Laboratory Control Sample (LCS) (LCS) R4001057-1 11/16/23 15:05 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TPH (GC/FID) Low Fraction 5.50 5.85 106 72.0-127 (S) a,a,a-Trifluorotoluene(FID) 102 77.0-120 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 13:36 7 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 14:10 7 of 11 QUALITY CONTROL SUMMARYWG2172197 Semi-Volatile Organic Compounds (GC) by Method 8015C L1677352-01 Method Blank (MB) (MB) R4001362-1 11/17/23 11:54 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/FID) High Fraction U 0.769 4.00 (S) o-Terphenyl 60.8 18.0-148 Laboratory Control Sample (LCS) (LCS) R4001362-2 11/17/23 12:07 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TPH (GC/FID) High Fraction 50.0 28.4 56.8 50.0-150 (S) o-Terphenyl 54.1 18.0-148 L1677177-07 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1677177-07 11/17/23 14:18 • (MS) R4001362-3 11/17/23 14:31 • (MSD) R4001362-4 11/17/23 14:44 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg %%%%% TPH (GC/FID) High Fraction 50.9 U 29.3 29.9 57.5 59.5 1 50.0-150 2.14 20 (S) o-Terphenyl 50.8 50.6 18.0-148 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 13:36 8 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 14:10 8 of 11 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions (dry)Results are reported based on the dry weight of the sample. [this will only be present on a dry report basis for soils]. MDL Method Detection Limit. MDL (dry)Method Detection Limit. RDL Reported Detection Limit. RDL (dry)Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Original Sample The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control sample. The Original Sample may not be included within the reported SDG. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description B The same analyte is found in the associated blank. J The identification of the analyte is acceptable; the reported value is an estimate. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 13:36 9 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 14:10 9 of 11 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 13:36 10 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services - NC Pilot 7976-605-13 L1677352 11/20/23 14:10 10 of 11