WS-29850_48949_CA_SCH_20220310

March 10, 2022

Kevin Sutphin
Guardian Fueling Technologies
8642 W. Market Street – Suite 140
Greensboro, NC 27409

Reference: Site Check Sampling Refuel #167 1411 W. Gate City Boulevard Greensboro, North Carolina Facility ID # 00-0-0000036033 Dear Mr. Sutphin:
Please find enclosed a report summarizing the site check activities for the spill buckets on one regular-grade gasoline UST and one diesel UST at the above referenced facility. An inspection noted issues with the spill buckets. On March 2, 2022 Paragon Environmental Consultants, Inc. (Paragon) and Guardian Fueling Technologies (Guardian) mobilized to the site to replace the spill buckets and to conduct assessment sampling at 1411 W. Gate City Boulevard. The results of our findings are summarized herein. Two soil samples were obtained directly adjacent to the former spill buckets on the regular-grade gasoline tank and the diesel tank. These samples were collected from hand auger borings advanced by Paragon immediately adjacent to the fill port riser pipes following the removal of the previous spill buckets by Guardian. The samples were collected from in-situ soils at depths of approximately 2 feet below surface grade. The samples from the regular-grade gasoline tank spill bucket were labeled as RSB-A and RSB-B with sample A being from the north side of the riser pipe and sample B being from the south side of the riser pipe. The samples from the diesel tank spill bucket were labeled as DSB-A and DSB-B with sample A being from the north side of the riser pipe and sample B being from the south side of the riser pipe. Following the soil sampling activities, the new spill buckets were installed onto the fill ports and the concrete was replaced by Guardian. All of the soil samples obtained immediately adjacent to the spill buckets were submitted to Waypoint Analytical, LLC for laboratory analysis according to Gasoline Range Organics (GRO). GRO tests for Total Petroleum Hydrocarbons (TPH) from low boiling-point fuels such as gasoline, aviation fuel, and gasohol. The current action level for GRO constituents is 50 milligrams per kilogram (mg/kg). The samples from the diesel spill bucket were also analyzed according to Diesel Range Organics (DRO). DRO tests for TPH from high boiling-point fuels such as diesel, kerosene, and fuel oil. The current action level for DRO constituents is 100 mg/kg.
PARAGON
Environmental Consultants, Inc.
P.O. Box 157 • Thomasville, NC 27361-0157
Business Ph: [phone] • Fax: [phone]
Soil sample RSB-A was below the TPH action level for GRO. Soil sample RSB-B was reported at a concentration of 200 mg/kg by GRO, which exceeds the NC DEQ action level for GRO. Both soil samples from the diesel spill bucket at the Refuel #167 indicated TPH concentrations in excess of the action level for DRO. Sample DSB-A was reported at a concentration of 8,610 mg/kg by DRO and 505 mg/kg by GRO. Soil sample DSB-B was detected at a level of 3,210 mg/kg according to DRO. The GRO results for DSB-B was below the action level for TPH by GRO. Table 1 summarizes the TPH analytical results for this project, and Attachment A contains a copy of the laboratory analytical report and the chain-of-custody record for the soil samples obtained on March 2, 2023.

Based on the findings from our investigation showing TPH levels at both the regular-grade gasoline spill bucket and the diesel spill bucket exceeding the action limits, Paragon recommends that these results be submitted to both the Permits and Inspections Branch and the Corrective Action Branch of the NC DEQ. Paragon can report the laboratory results for this tank owner if directed to do so on their behalf. The UST Section will make a determination on additional actions related to the spill buckets at 1411 W. Gate City Boulevard in Greensboro, NC, but they will most likely require that a Limited Site Assessment be conducted in response to this detected release of petroleum. Please contact our office at [phone] if you have any questions regarding the site check activities. Sincerely,
Benjamin W. Robinson, L.G. Paragon Environmental Consultants, Inc.

L23-2310

TABLE 1
FIELD AND LABORATORY ANALYTICAL RESULTS -
TPH SOIL SAMPLES

Refuel #167
1411 W. Gate City Boulevard
Greensboro, North Carolina

SAMPLE LOCATION DATE DEPTH TPH DRO* TPH GRO* OVA
ID (ft.)

RSB-A Regular Spill Bucket 3/2/23 2' N/A 48.6 N/A - A
RSB-B Regular Spill Bucket 3/2/23 2' N/A 200 N/A - B
DSB-A Diesel Spill Bucket 3/2/23 2' 8,610 505 N/A - A
DSB-B Diesel Spill Bucket 3/2/23 2' 3,210 31.7 N/A - B

* Results in milligrams per kilogram (mg/kg)

N/A = Not Analyzed

BDL = Below Detection Limits
L23-2310T

ATTACHMENT A

LABORATORY ANALYTICAL RESULTS

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.

3/10/2023
Paragon Environmental Consultants, Inc. Brandon Moore
PO Box 157 Thomasville, NC, 27361
Ref: Analytical Testing
Lab Report Number: 23-062-0104 Client Project Description: Refuel #167
P-2310
Dear Brandon Moore:
Waypoint Analytical, LLC (Charlotte) received sample(s) on 3/3/2023 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 18
Certification Summary
Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC
State Program Lab ID Expiration Date
07/31/202337735State ProgramNorth Carolina
12/31/2023402State ProgramNorth Carolina
07/31/202399012State ProgramSouth Carolina
12/31/202299012State ProgramSouth Carolina
Page 1 of 1 00016/23-062-0104
Page 2 of 18
Report Number:
Sample Summary Table
Client Project Description:
23-062-0104
Refuel #167
P-2310
Lab No Client Sample ID Matrix Date Collected Date Received
03/02/2023 12:00Solids 90169 RSB-A 03/03/2023 13:30
03/02/2023 12:10Solids 90170 RSB-B 03/03/2023 13:30
03/02/2023 12:20Solids 90171 DSB-A 03/03/2023 13:30
03/02/2023 12:30Solids 90172 DSB-B 03/03/2023 13:30
Page 3 of 18
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-062-0104
Report Limit
Project:Refuel #167
V 90169RSB-A
48.6 03/06/2023 14:188015C GRO Gasoline Range Organics (C6-C10)mg/Kg - dry 2.22
6.84 06/07/2023 16:20SW-DRYWT Moisture %
V 90170RSB-B
200 03/06/2023 14:468015C GRO Gasoline Range Organics (C6-C10)mg/Kg - dry 2.11
1.85 06/07/2023 16:20SW-DRYWT Moisture %
V 90171DSB-A
8610 03/10/2023 13:298015C DRO Diesel Range Organics (C10-C28)mg/Kg - dry 253
505 03/06/2023 16:408015C GRO Gasoline Range Organics (C6-C10)mg/Kg - dry 22.5
7.93 06/07/2023 16:20SW-DRYWT Moisture %
V 90172DSB-B
3210 03/10/2023 13:508015C DRO Diesel Range Organics (C10-C28)mg/Kg - dry 110
31.7 03/06/2023 15:148015C GRO Gasoline Range Organics (C6-C10)mg/Kg - dry 2.44
15.2 06/07/2023 16:20SW-DRYWT Moisture %
Page 4 of 18

Client: Paragon Environmental Consultants, Inc. CASE NARRATIVE
Project: Refuel #167 Lab Report Number: 23-062-0104
Date: 3/10/2023
Total Petroleum Hydrocarbons - Extractable Method 8015C DRO Sample 90171 (DSB-A) Analyte: Diesel Range Organics (C10-C28)
QC Batch No: V30656/V30636 Sample requires dilution due to high levels of target and/or non-target analytes.
Sample 90172 (DSB-B)
Analyte: Diesel Range Organics (C10-C28) QC Batch No: V30656/V30636
Sample requires dilution due to high levels of target and/or non-target analytes.
Sample 90171 (DSB-A) Analyte: o-Terphenyl
QC Batch No: V30656/V30636 Surrogate(s) flagged for recovery outside QC limits in this project sample due to a required dilution. The dilution
factor resulted in surrogate concentration(s) below the minimum detectable level. Batch QC samples (method blank and laboratory control samples) all showed surrogates within QC limits.

Page 5 of 18
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27361
23-062-0104
01156
Paragon Environmental Consultants, Inc.
PO Box 157
Brandon Moore
Thomasville
P-2310 Received : 03/03/2023
Refuel #167
Report Date : 03/10/2023
Sample ID :
Lab No :
Sampled:RSB-A
90169 Matrix:
3/2/2023 12:00
Solids
Test Results Units MDL MQL By Analytical
Method
Date / Time
Analyzed
DF
6.84 %Moisture 1 06/07/23 16:20 SW-DRYWTAMB
Qualifiers/
Definitions
Dilution FactorDFOutside QC Limit*
Method Quantitation LimitMQL
Page 6 of 18
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27361
23-062-0104
01156
Paragon Environmental Consultants, Inc.
PO Box 157
Brandon Moore
Thomasville
P-2310 Received : 03/03/2023
Refuel #167
Report Date : 03/10/2023
Sample ID :
Lab No :
Sampled:RSB-A
90169 Matrix:
3/2/2023 12:00
Solids
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
5035 MED
8015C GRO Prep Batch(es):V30485 03/06/23 08:00
48.6 mg/Kg - dry 2.22 5.37Gasoline Range Organics (C6-C10)50 03/06/23 14:18 V30487TBL
8015C GROSurrogate: a,a,a-Trifluorotoluene 109 Limits: 50-137%03/06/23 14:1850 TBL
Qualifiers/
Definitions
Dilution FactorDFOutside QC Limit*
Method Quantitation LimitMQL
Page 7 of 18
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27361
23-062-0104
01156
Paragon Environmental Consultants, Inc.
PO Box 157
Brandon Moore
Thomasville
P-2310 Received : 03/03/2023
Refuel #167
Report Date : 03/10/2023
Sample ID :
Lab No :
Sampled:RSB-B
90170 Matrix:
3/2/2023 12:10
Solids
Test Results Units MDL MQL By Analytical
Method
Date / Time
Analyzed
DF
1.85 %Moisture 1 06/07/23 16:20 SW-DRYWTAMB
Qualifiers/
Definitions
Dilution FactorDFOutside QC Limit*
Method Quantitation LimitMQL
Page 8 of 18
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27361
23-062-0104
01156
Paragon Environmental Consultants, Inc.
PO Box 157
Brandon Moore
Thomasville
P-2310 Received : 03/03/2023
Refuel #167
Report Date : 03/10/2023
Sample ID :
Lab No :
Sampled:RSB-B
90170 Matrix:
3/2/2023 12:10
Solids
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
5035 MED
8015C GRO Prep Batch(es):V30485 03/06/23 08:00
200 mg/Kg - dry 2.11 5.09Gasoline Range Organics (C6-C10)50 03/06/23 14:46 V30487TBL
8015C GROSurrogate: a,a,a-Trifluorotoluene 95.2 Limits: 50-137%03/06/23 14:4650 TBL
Qualifiers/
Definitions
Dilution FactorDFOutside QC Limit*
Method Quantitation LimitMQL
Page 9 of 18
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27361
23-062-0104
01156
Paragon Environmental Consultants, Inc.
PO Box 157
Brandon Moore
Thomasville
P-2310 Received : 03/03/2023
Refuel #167
Report Date : 03/10/2023
Sample ID :
Lab No :
Sampled:DSB-A
90171 Matrix:
3/2/2023 12:20
Solids
Test Results Units MDL MQL By Analytical
Method
Date / Time
Analyzed
DF
7.93 %Moisture 1 06/07/23 16:20 SW-DRYWTAMB
Qualifiers/
Definitions
Dilution FactorDFOutside QC Limit*
Method Quantitation LimitMQL
Page 10 of 18
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27361
23-062-0104
01156
Paragon Environmental Consultants, Inc.
PO Box 157
Brandon Moore
Thomasville
P-2310 Received : 03/03/2023
Refuel #167
Report Date : 03/10/2023
Sample ID :
Lab No :
Sampled:DSB-A
90171 Matrix:
3/2/2023 12:20
Solids
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
3546
8015C DRO Prep Batch(es):V30636 03/09/23 13:00
8610 mg/Kg - dry 253 544Diesel Range Organics (C10-C28)50 03/10/23 13:29 V30656AMP
8015C DROSurrogate: OTP Surrogate 172 *Limits: 31-123%03/10/23 13:2950 AMP
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
5035 MED
8015C GRO Prep Batch(es):V30485 03/06/23 08:00
505 mg/Kg - dry 22.5 54.3Gasoline Range Organics (C6-C10)500 03/06/23 16:40 V30487TBL
8015C GROSurrogate: a,a,a-Trifluorotoluene 99.0 Limits: 50-137%03/06/23 16:40500 TBL
Qualifiers/
Definitions
Dilution FactorDFOutside QC Limit*
Method Quantitation LimitMQL
Page 11 of 18
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27361
23-062-0104
01156
Paragon Environmental Consultants, Inc.
PO Box 157
Brandon Moore
Thomasville
P-2310 Received : 03/03/2023
Refuel #167
Report Date : 03/10/2023
Sample ID :
Lab No :
Sampled:DSB-B
90172 Matrix:
3/2/2023 12:30
Solids
Test Results Units MDL MQL By Analytical
Method
Date / Time
Analyzed
DF
15.2 %Moisture 1 06/07/23 16:20 SW-DRYWTAMB
Qualifiers/
Definitions
Dilution FactorDFOutside QC Limit*
Method Quantitation LimitMQL
Page 12 of 18
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27361
23-062-0104
01156
Paragon Environmental Consultants, Inc.
PO Box 157
Brandon Moore
Thomasville
P-2310 Received : 03/03/2023
Refuel #167
Report Date : 03/10/2023
Sample ID :
Lab No :
Sampled:DSB-B
90172 Matrix:
3/2/2023 12:30
Solids
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
3546
8015C DRO Prep Batch(es):V30636 03/09/23 13:00
3210 mg/Kg - dry 110 236Diesel Range Organics (C10-C28)20 03/10/23 13:50 V30656AMP
8015C DROSurrogate: OTP Surrogate 104 Limits: 31-123%03/10/23 13:5020 AMP
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
5035 MED
8015C GRO Prep Batch(es):V30485 03/06/23 08:00
31.7 mg/Kg - dry 2.44 5.90Gasoline Range Organics (C6-C10)50 03/06/23 15:14 V30487TBL
8015C GROSurrogate: a,a,a-Trifluorotoluene 115 Limits: 50-137%03/06/23 15:1450 TBL
Qualifiers/
Definitions
Dilution FactorDFOutside QC Limit*
Method Quantitation LimitMQL
Page 13 of 18
Quality Control Data
23-062-0104Report No:
Project Description:
Client ID:Paragon Environmental Consultants, Inc.
Refuel #167
QC Prep Batch Method:
Total Petroleum Hydrocarbons - Extractable
8015C DRO
V30656QC Analytical Batch(es):
Analysis Method:
Analysis Description:
3546
QC Prep:V30636
Associated Lab Samples: 90171, 90172
LRB-V30636 Matrix: SOLLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
03/10/23 08:5410.04.65<4.65mg/KgDiesel Range Organics (C10-C28)
03/10/23 08:54OTP Surrogate (S)99.2 31-123
LCS-V30636 LCSD-V30636Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
74.1 11110167.166.7mg/KgDiesel Range Organics (C10-C28)46-126 9.9 20
95.497.7OTP Surrogate (S)31-123
Page 1 of 3Date:03/10/2023 03:58 PM
Page 14 of 18
Quality Control Data
23-062-0104Report No:
Project Description:
Client ID:Paragon Environmental Consultants, Inc.
Refuel #167
QC Prep Batch Method:
Total Petroleum Hydrocarbons - Volatile
8015C GRO
V30487QC Analytical Batch(es):
Analysis Method:
Analysis Description:
5035 MED
QC Prep:V30485
Associated Lab Samples: 90169, 90170, 90171, 90172
LRB-V30485 Matrix: SOLLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
03/06/23 12:545.002.07<2.07mg/KgGasoline Range Organics (C6-C10)
03/06/23 12:54a,a,a-Trifluorotoluene (S)110 50-137
LCS-V30485Laboratory Control Sample
Parameter
LCS %RecLCS
Result
Spike
Conc.Units
% Rec
Limits
10954.350.0mg/KgGasoline Range Organics (C6-C10)41-138
104a,a,a-Trifluorotoluene (S)50-137
V 90090-MS-V30485 V 90090-MSD-V30485Matrix Spike & Matrix Spike Duplicate
MS Result
Parameter
Max
RPD
MS
%Rec
MSD
Result
MSD
Spike
Conc.
MS Spike
Conc.ResultUnits
%Rec
Limits
MSD
%Rec RPD
43.3 86.648.450.050.0<2.07mg/KgGasoline Range Organics (C6-C10)96.8 41-138 11.1 34
104a,a,a-Trifluorotoluene (S)77.6 50-137
Page 2 of 3Date:03/10/2023 03:58 PM
Page 15 of 18
Quality Control Data
23-062-0104Report No:
Project Description:
Client ID:Paragon Environmental Consultants, Inc.
Refuel #167
Dry Weight Determination
SW-DRYWT
V30557QC Analytical Batch:
Analysis Method:
Analysis Description:
V 90196-DUPDuplicate
Max RPD
Parameter
AnalyzedRPDDUP
Result
Result
Units
20.0 06/07/23 16:200.026.926.9%Moisture
V 90259-DUPDuplicate
Max RPD
Parameter
AnalyzedRPDDUP
Result
Result
Units
20.0 06/07/23 16:202.810.310.6%Moisture
Page 3 of 3Date:03/10/2023 03:58 PM
Page 16 of 18
Fed Ex
UPS
US Postal
Client
Lab
Courier
Other :
Shipment Receipt Form
Customer Number:
Customer Name:
Report Number:23-062-0104
Paragon Environmental Consultants, Inc.
01156
Shipping Method
Shipping container/cooler uncompromised?
Thermometer ID:IRT15 2.5C
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:Angela D Overcash Date & Time:03/03/2023 17:55:39
Special precautions or instructions included?
Comments:
Page 17 of 18
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