WS-3097_8863_CA_OTH_20250122_respondence-to-GW sampliong

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Gene Mao
From:Gene Mao
Sent:Wednesday, January 22, 2025 3:20 PM
To:James Dodson
Subject:RE: Re: Church Street Family Fare #172 - Facility ID 00-0-00000009710-Gwtr Resample
event
James,

I thought I responded to your email after reviewing your sampling report.

Because of no GCL detection in the your latest sampling results for MW-01A and an
existing NRP recorded June 15, 2015 for incident #8863, no additional work is needed
unless new release is reported.

Thank you.

From: James Dodson <[e-mail]>
Sent: Wednesday, January 22, 2025 10:19 AM
To: Gene Mao <[e-mail]>
Subject: FW: Re: Church Street Family Fare #172 - Facility ID 00-0-00000009710-Gwtr Resample event

*WARNING* This email originated outside Guilford County's email system.
*WARNING*
Do not click unrecognized links or attachments. When in doubt, use the Phish Alert
Report button.
Gene,

Had you ever made a decision regarding this site? The re-sample event was performed so that you could
decide if a new incident should be started or if the site would close under the existing NRP for the property.
Please let me know the outcome so I can decide what to do about the site monitor well. Thanks.

James Dodson, P.G. | Operations Manager - Carolinas | [e-mail] |
ESNC Environmental Consulting, P.C.
1408 Christian Avenue Suite 11 | Durham, NC 27705
T. 919.910.7767 | M. 919.356.0236

From: James Dodson
Sent: Wednesday, August 21, 2024 10:04 AM
2
To: [e-mail]
Subject: Re: Church Street Family Fare #172 - Facility ID 00-0-00000009710-Gwtr Resample event

Hi Gene,

Please see attached the results of a groundwater resample event at the above referenced facility,. The sample
was collected based upon electronic correspondence from the Guilford County DHHS. Let me know if you have
any questions. Thanks.

James Dodson, P.G. | Operations Manager - Carolinas | [e-mail] |
ESNC Environmental Consulting, P.C.
1408 Christian Avenue Suite 11 | Durham, NC 27705
T. 919.910.7767 | M. 919.356.0236

1408 Christian Avenue, Suite 11, Durham, NC 27705-2909
Florida • North Dakota • New Jersey • Colorado • Texas • New York • Pennsylvania • North Carolina
August 21, 2024
Mr. Gene Mao Guilford County
Department of Health and Human Services 400 West Market Street, Suite 300 Greensboro, NC 27401
Reference: Site Check – Miscellaneous Groundwater Re-sample/Monitoring Letter Report
Church Street Family Fare BP #172: M.M. Fowler, Inc. (Facility ID No. 00-0-0000009710) 2750 North Church Street, Greensboro, Guilford County, NC 27405 Former UST Incident Number(s): #8863 (Speedway #8165)
Dear Mr. Mao:
Please find enclosed the results for the re-sampling of a groundwater monitoring well, MW-1A, installed during site check activities at the above referenced site. The well was re-sampled based upon electronic communication from the Guilford County Department of Health and Human Services (DHHS) on July 30, 2024, requesting that the previously detected target compounds and reported concentrations be verified.
ESNC Environmental Consulting, P.C. (ESNC) mobilized to the site on August 8, 2024, to resample MW-1A. MW-1A’s groundwater was measured for depth-to-water (DTW) and for the presence of PSH using a
SolinstTM oil/water IFP accurate to 0.01 feet. DTW in MW-1A was measured at 27.67 below top of casing (BTOC). PSH was not monitored to be present.
Following the monitoring, MW-1A was purged of three to five well volumes with disposable polyethylene
bailers and nylon string. The well was then allowed to recharge within 95% of its pre-development depth to water prior to sampling. One groundwater sample was collected from the well and was analyzed by EPA Method 6200B for Volatile Organic Compounds (VOCs).
The laboratory analytical results for the August 8, 2024, re-sample event for MW-1A is tabulated on the attached Table 6 and the complete laboratory analytical report with supporting COC documentation are included with this correspondence.
Groundwater analysis by EPA Method 6200B confirmed the presence of the previously identified target compounds in the groundwater. The reported concentrations were like those previously reported. For the August 6, 2024, sample event the concentrations of Benzene, 1,2,4-Trimethylbenzene, 1,3,5- Trimethylbenzene, n–Propylbenzene and Naphthalene were reported above the corresponding NCAC 2L Groundwater Quality Standards (GWQSs). No detected compound was reported more than the Gross Contamination Levels (GCLs).
DATE: 8/2024 Incident Number/Name:
I. EPA 6200B ANALYTICAL RESULTS
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MW-1A 5/8/2024 1,200 3,690 432 1,970 26.6 120 464 108 28.9 12.0 71.1 56.2 5.9 BRL BRL 161
7/16/2024 46 J 9.5 J 27 J 290 BRL 28 J 1,300 520 33 J 12.0 140 24 J BRL 6.4 J BRL NA
8/8/2024 39 J 9.0 J 13 J 220 BRL 22 J 1,700 740 42 J BRL 180 21 J BRL 48 J 39 J NA
NCAC 2L GWS 1 600 600 500 20 70 400 400 70 70 70 6 70 25 70 40
GCL Standard 5,000 260,000 80,000 50,000 20,000 70,000 28,500 24,100 30,500 5,900 26,100 6,000 8,800 11,700 70,000 40,000
II. MADEP VPH ANALYTICAL RESULTS
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MW-1A 5/8/2024 BRL BRL NA BRL
7/16/2024 NA NA NA NA
NCAC 2L Standard 400 700 10,000 200
GCL Standard NS NS NS NS
III. Total Lead
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MW-1A 5/8/2024 BRL
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NCAC 2L Standard 15
GCL Standard 15,000
IV. EPA 504.1
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MW-1A 5/8/2024 BRL
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NCAC 2L Standard 0.02GCL Standard 50
NOTES:
1.) All reported concentrations in ug/L.
2.) Bold Font indicates exceedance of the NCAC 2L Groundwater Standard (GWS).
3.) Concentrations followed by a "J" indicate an estimated value between the Reporting Limit and the Method Detection Limit.
4.) NA denotes not analyzed.
5.) BRL denotes concentration below the reporting limits as stated on analytical report.
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unassigned / Church Street FF #172
Table 6. Groundwater Laboratory Analytical Results Summary
M.M. Fowler, Inc. : Church Street Family Fare BP #172
2750 North Church Street, Greensboro, Guilford County, NC 27405
Facility ID No. 00-0-0000009710
ESNC Project No. 7925
Detected Compounds
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Page 1 of 1
APPROXIMATE SCALE
IN FEET
0.0 500 1500 3000
PORTION OF GREENSBORO, NORTH CAROLINA 7.5 MINUTE SERIES USGS TOPOGRAPHIC MAPS (2019)
1,000 FOOT RADIUS
SITELOCATION
CHURCH STREET FAMILY FARE #172 - M.M. FOWLER, INC.
2750 NORTH CHURCH STREET, GREENSBORO, GUILFORD COUNTY, NC 27405
FIGURE 1: SITE TOPOGRAPHY VICINITY MAP
DRAWN BY: JJD
DATE: 3/20/2024
ESNC JOB 7925
N
EXPLANATION
0.0 10 20 40
APPROXIMATE SCALE
IN FEET
FIGURE 3: SITE MAP WITH ATTEMPTED SOIL BORINGS AND MONITOR WELL LOCATION
CHURCH STREET FAMILY FARE #172
2750 NORTH CHURCH STREET, GREENSBORO, GUILFORD COUNTY, NC 27405
MODIFIED BY: JJD
DATE: 7/23/2024
PROJECT NO: 7925
SB-1
SB-1
MW-1A
SB-3 SB-2
SB-4
ATTEMPTED SOIL SAMPLE LOCATION
MONITOR WELL LOCATION
MW-1A
ANALYTICAL REPORT
PREPARED FOR
Attn: Justin Abreu
Earth Systems LLC
1408 Christain Ave
Suite 811
Durham, North Carolina 27705
Generated 8/15/2024 8:50:35 AM
JOB DESCRIPTION
Church St FF/BP #172
JOB NUMBER
752-22856-1
See page two for job notes and contact information.
Cary NC 27511
Suite A
104 Woodwinds Industrial Court
Eurofins Raleigh
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Eurofins Raleigh
Eurofins Raleigh is a laboratory within Eurofins Environment Testing Southeast, LLC, a company within Eurofins Environment Testing Group of Companies
Job Notes
This report may not be reproduced except in full, and with written approval from the laboratory. The results relate only to the
samples tested. For questions please contact the Project Manager at the e-mail address or telephone number listed on this
page.
The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the
methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written
approval of the laboratory. All questions should be directed to the Eurofins Environment Testing Southeast, LLC Project
Manager.
Authorization
Generated
8/15/2024 8:50:35 AM
Authorized for release by
Nikita Kuruganty, Project Manager
[e-mail]
[phone]
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Table of Contents
Client: Earth Systems LLC
Project/Site: Church St FF/BP #172
Laboratory Job ID: 752-22856-1
Page 3 of 22 Eurofins Raleigh8/15/2024
Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
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Definitions/Glossary
Job ID: 752-22856-1Client: Earth Systems LLC
Project/Site: Church St FF/BP #172
Qualifiers
GC/MS VOA
Qualifier Description
*+LCS and/or LCSD is outside acceptance limits, high biased.
Qualifier
J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value.
Glossary
These commonly used abbreviations may or may not be present in this report.
¤Listed under the "D" column to designate that the result is reported on a dry weight basis
Abbreviation
%R Percent Recovery
CFL Contains Free Liquid
CFU Colony Forming Unit
CNF Contains No Free Liquid
DER Duplicate Error Ratio (normalized absolute difference)
Dil Fac Dilution Factor
DL Detection Limit (DoD/DOE)
DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample
DLC Decision Level Concentration (Radiochemistry)
EDL Estimated Detection Limit (Dioxin)
LOD Limit of Detection (DoD/DOE)
LOQ Limit of Quantitation (DoD/DOE)
MCL EPA recommended "Maximum Contaminant Level"
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MPN Most Probable Number
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
NEG Negative / Absent
POS Positive / Present
PQL Practical Quantitation Limit
PRES Presumptive
QC Quality Control
RER Relative Error Ratio (Radiochemistry)
RL Reporting Limit or Requested Limit (Radiochemistry)
RPD Relative Percent Difference, a measure of the relative difference between two points
TEF Toxicity Equivalent Factor (Dioxin)
TEQ Toxicity Equivalent Quotient (Dioxin)
TNTC Too Numerous To Count
Eurofins Raleigh
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Job Narrative752-22856-1
Analytical test results meet all requirements of the associated regulatory program listed on the Accreditation/Certification SummaryPageunlessotherwisenotedundertheindividualanalysis.Data qualifiers and/or narrative comments are included to explain any
exceptions,if applicable.
Matrix QC may not be reported if insufficient sample is provided or site-specific QC samples were not submitted.In these
situations,to demonstrate precision and accuracy at a batch level,a LCS/LCSD may be performed,unless otherwise
specified in the method.Surrogate and/or isotope dilution analyte recoveries (if applicable)which are outside of the QC window are confirmed
unless attributed to a dilution or otherwise noted in the narrative.
Receipt
The sample was received on 8/8/2024 12:55 PM.Unless otherwise noted below,the sample arrived in good condition,and,where
required,properly preserved and on ice.The temperature of the cooler at receipt time was 4.8°C.
GC/MS VOAMethodSM6200_B:The following sample was diluted to bring the concentration of target analytes within the calibration range:
MW-1A (752-22856-1).Elevated reporting limits (RLs)are provided.
No additional analytical or quality issues were noted,other than those described above or in the Definitions/Glossary page.
Case Narrative
Client: Earth Systems LLC Job ID: 752-22856-1
Project: Church St FF/BP #172
Eurofins Raleigh
Job ID: 752-22856-1 Eurofins Raleigh
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Detection Summary
Job ID: 752-22856-1Client: Earth Systems LLC
Project/Site: Church St FF/BP #172
Client Sample ID: MW-1A Lab Sample ID: 752-22856-1
Isopropyl ether - DL
RL
50 ug/L
MDL
11
Analyte Result Qualifier Unit Dil Fac D Method Prep Type
Total/NA50J22SM6200-B
Chloroform - DL 50 ug/L4.2 Total/NA5039JSM6200-B
Benzene - DL 50 ug/L2.5 Total/NA5039JSM6200-B
Toluene - DL 50 ug/L2.7 Total/NA509.0 J SM6200-B
Ethylbenzene - DL 50 ug/L5.0 Total/NA5013JSM6200-B
m,p-Xylenes - DL 100 ug/L9.0 Total/NA50190SM6200-B
o-Xylene - DL 50 ug/L4.4 Total/NA5029JSM6200-B
4-Isopropyltoluene - DL 50 ug/L3.3 Total/NA5048JSM6200-B
N-Propylbenzene - DL 50 ug/L3.7 Total/NA50180SM6200-B
1,3,5-Trimethylbenzene - DL 50 ug/L5.0 Total/NA50740SM6200-B
1,2,4-Trimethylbenzene - DL 50 ug/L3.4 Total/NA501700SM6200-B
Isopropylbenzene - DL 50 ug/L6.5 Total/NA5042JSM6200-B
Xylenes, Total - DL 50 ug/L11 Total/NA50220SM6200-B
Naphthalene - DL 50 ug/L4.3 Total/NA5021JSM6200-B
Eurofins Raleigh
This Detection Summary does not include radiochemical test results.
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Client Sample Results
Job ID: 752-22856-1Client: Earth Systems LLC
Project/Site: Church St FF/BP #172
Lab Sample ID: 752-22856-1Client Sample ID: MW-1A
Matrix: WaterDate Collected: 08/08/24 10:28
Date Received: 08/08/24 12:55
Method: SM6200-B - Volatile Organic Compounds - DL
RL MDL
<4.6 50 4.6 ug/L 08/13/24 19:56 50
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Dichlorodifluoromethane
50 2.5 ug/L 08/13/24 19:56 50<2.5Chloromethane
50 4.2 ug/L 08/13/24 19:56 50<4.2Vinyl chloride
50 14 ug/L 08/13/24 19:56 50<14Bromomethane
50 9.0 ug/L 08/13/24 19:56 50<9.0Chloroethane
50 7.5 ug/L 08/13/24 19:56 50<7.5Trichlorofluoromethane
50 7.5 ug/L 08/13/24 19:56 50<7.51,1-Dichloroethene
100 3.5 ug/L 08/13/24 19:56 50<3.5Methylene Chloride
50 6.0 ug/L 08/13/24 19:56 50<6.0Methyl tert-butyl ether
50 5.5 ug/L 08/13/24 19:56 50<5.5trans-1,2-Dichloroethene
50 2.5 ug/L 08/13/24 19:56 50<2.51,1-Dichloroethane
50 11 ug/L 08/13/24 19:56 5022JIsopropyl ether
50 3.8 ug/L 08/13/24 19:56 50<3.8cis-1,2-Dichloroethene
50 6.0 ug/L 08/13/24 19:56 50<6.02,2-Dichloropropane
50 5.5 ug/L 08/13/24 19:56 50<5.5Bromochloromethane
50 4.2 ug/L 08/13/24 19:56 5039JChloroform
50 7.5 ug/L 08/13/24 19:56 50<7.51,1,1-Trichloroethane
50 3.2 ug/L 08/13/24 19:56 50<3.21,1-Dichloropropene
50 4.1 ug/L 08/13/24 19:56 50<4.1Carbon tetrachloride
50 4.1 ug/L 08/13/24 19:56 50<4.11,2-Dichloroethane
50 2.5 ug/L 08/13/24 19:56 5039JBenzene
50 6.5 ug/L 08/13/24 19:56 50<6.5Trichloroethene
50 4.9 ug/L 08/13/24 19:56 50<4.91,2-Dichloropropane
50 6.5 ug/L 08/13/24 19:56 50<6.5Dibromomethane
50 5.0 ug/L 08/13/24 19:56 50<5.0Bromodichloromethane
50 3.7 ug/L 08/13/24 19:56 50<3.7cis-1,3-Dichloropropene
50 2.7 ug/L 08/13/24 19:56 509.0 JToluene
50 4.0 ug/L 08/13/24 19:56 50<4.0trans-1,3-Dichloropropene
50 3.4 ug/L 08/13/24 19:56 50<3.41,1,2-Trichloroethane
50 7.5 ug/L 08/13/24 19:56 50<7.51,3-Dichloropropane
50 5.0 ug/L 08/13/24 19:56 50<5.0Tetrachloroethene
50 3.4 ug/L 08/13/24 19:56 50<3.4Dibromochloromethane
50 21 ug/L 08/13/24 19:56 50<211,2-Dibromoethane
50 3.5 ug/L 08/13/24 19:56 50<3.5Chlorobenzene
50 4.6 ug/L 08/13/24 19:56 50<4.61,1,1,2-Tetrachloroethane
50 5.0 ug/L 08/13/24 19:56 5013JEthylbenzene
50 18 ug/L 08/13/24 19:56 50<18 *+Freon 113
100 9.0 ug/L 08/13/24 19:56 50190m,p-Xylenes
50 4.4 ug/L 08/13/24 19:56 5029Jo-Xylene
50 4.1 ug/L 08/13/24 19:56 50<4.1Styrene
50 10 ug/L 08/13/24 19:56 50<10Bromoform
50 3.3 ug/L 08/13/24 19:56 5048J4-Isopropyltoluene
50 4.3 ug/L 08/13/24 19:56 50<4.31,1,2,2-Tetrachloroethane
50 6.5 ug/L 08/13/24 19:56 50<6.5Bromobenzene
50 7.5 ug/L 08/13/24 19:56 50<7.51,2,3-Trichloropropane
50 3.7 ug/L 08/13/24 19:56 50180N-Propylbenzene
50 5.0 ug/L 08/13/24 19:56 50<5.02-Chlorotoluene
50 5.0 ug/L 08/13/24 19:56 507401,3,5-Trimethylbenzene
50 5.0 ug/L 08/13/24 19:56 50<5.04-Chlorotoluene
Eurofins Raleigh
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Client Sample Results
Job ID: 752-22856-1Client: Earth Systems LLC
Project/Site: Church St FF/BP #172
Lab Sample ID: 752-22856-1Client Sample ID: MW-1A
Matrix: WaterDate Collected: 08/08/24 10:28
Date Received: 08/08/24 12:55
Method: SM6200-B - Volatile Organic Compounds - DL (Continued)
RL MDL
<4.7 50 4.7 ug/L 08/13/24 19:56 50
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
tert-Butylbenzene
50 3.4 ug/L 08/13/24 19:56 5017001,2,4-Trimethylbenzene
50 2.7 ug/L 08/13/24 19:56 50<2.7sec-Butylbenzene
50 4.6 ug/L 08/13/24 19:56 50<4.61,3-Dichlorobenzene
50 6.5 ug/L 08/13/24 19:56 5042JIsopropylbenzene
50 5.0 ug/L 08/13/24 19:56 50<5.01,4-Dichlorobenzene
50 3.7 ug/L 08/13/24 19:56 50<3.7n-Butylbenzene
50 2.6 ug/L 08/13/24 19:56 50<2.61,2-Dichlorobenzene
50 24 ug/L 08/13/24 19:56 50<241,2-Dibromo-3-Chloropropane
50 4.9 ug/L 08/13/24 19:56 50<4.91,2,4-Trichlorobenzene
50 7.5 ug/L 08/13/24 19:56 50<7.5Hexachlorobutadiene
50 11 ug/L 08/13/24 19:56 50220Xylenes, Total
50 13 ug/L 08/13/24 19:56 50<131,2,3-Trichlorobenzene
50 4.3 ug/L 08/13/24 19:56 5021JNaphthalene
Toluene-d8 (Surr)96 70-130 08/13/24 19:56 50
Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery
4-Bromofluorobenzene (Surr)87 08/13/24 19:56 5070-130
Dibromofluoromethane (Surr)100 08/13/24 19:56 5070-130
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Surrogate Summary
Job ID: 752-22856-1Client: Earth Systems LLC
Project/Site: Church St FF/BP #172
Method: SM6200-B - Volatile Organic Compounds
Prep Type: Total/NAMatrix: Water
Lab Sample ID Client Sample ID (70-130)(70-130)(70-130)
TOL BFB DBFM
96 87 100752-22856-1 - DL
Percent Surrogate Recovery (Acceptance Limits)
MW-1A
95 94 94LCS 752-8342/8 Lab Control Sample
88 84 86LCSD 752-8342/9 Lab Control Sample Dup
91 83 96MB 752-8342/12 Method Blank
93 85 95MRL 752-8342/7 Lab Control Sample
Surrogate Legend
TOL = Toluene-d8 (Surr)
BFB = 4-Bromofluorobenzene (Surr)
DBFM = Dibromofluoromethane (Surr)
Eurofins Raleigh
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QC Sample Results
Job ID: 752-22856-1Client: Earth Systems LLC
Project/Site: Church St FF/BP #172
Method: SM6200-B - Volatile Organic Compounds
Client Sample ID: Method BlankLab Sample ID: MB 752-8342/12
Matrix: Water Prep Type: Total/NA
Analysis Batch: 8342
RL MDL
Dichlorodifluoromethane <0.091 1.0 0.091 ug/L 08/13/24 15:29 1
MB MB
Analyte Dil FacAnalyzedPreparedDUnitResultQualifier
<0.050 0.0501.0 ug/L 08/13/24 15:29 1Chloromethane
<0.083 0.0831.0 ug/L 08/13/24 15:29 1Vinyl chloride
<0.28 0.281.0 ug/L 08/13/24 15:29 1Bromomethane
<0.18 0.181.0 ug/L 08/13/24 15:29 1Chloroethane
<0.15 0.151.0 ug/L 08/13/24 15:29 1Trichlorofluoromethane
<0.15 0.151.0 ug/L 08/13/24 15:29 11,1-Dichloroethene
<0.070 0.0702.0 ug/L 08/13/24 15:29 1Methylene Chloride
<0.12 0.121.0 ug/L 08/13/24 15:29 1Methyl tert-butyl ether
<0.11 0.111.0 ug/L 08/13/24 15:29 1trans-1,2-Dichloroethene
<0.050 0.0501.0 ug/L 08/13/24 15:29 11,1-Dichloroethane
<0.21 0.211.0 ug/L 08/13/24 15:29 1Isopropyl ether
<0.075 0.0751.0 ug/L 08/13/24 15:29 1cis-1,2-Dichloroethene
<0.12 0.121.0 ug/L 08/13/24 15:29 12,2-Dichloropropane
<0.11 0.111.0 ug/L 08/13/24 15:29 1Bromochloromethane
<0.083 0.0831.0 ug/L 08/13/24 15:29 1Chloroform
<0.15 0.151.0 ug/L 08/13/24 15:29 11,1,1-Trichloroethane
<0.063 0.0631.0 ug/L 08/13/24 15:29 11,1-Dichloropropene
<0.082 0.0821.0 ug/L 08/13/24 15:29 1Carbon tetrachloride
<0.082 0.0821.0 ug/L 08/13/24 15:29 11,2-Dichloroethane
<0.050 0.0501.0 ug/L 08/13/24 15:29 1Benzene
<0.13 0.131.0 ug/L 08/13/24 15:29 1Trichloroethene
<0.098 0.0981.0 ug/L 08/13/24 15:29 11,2-Dichloropropane
<0.13 0.131.0 ug/L 08/13/24 15:29 1Dibromomethane
<0.10 0.101.0 ug/L 08/13/24 15:29 1Bromodichloromethane
<0.073 0.0731.0 ug/L 08/13/24 15:29 1cis-1,3-Dichloropropene
<0.053 0.0531.0 ug/L 08/13/24 15:29 1Toluene
<0.080 0.0801.0 ug/L 08/13/24 15:29 1trans-1,3-Dichloropropene
<0.068 0.0681.0 ug/L 08/13/24 15:29 11,1,2-Trichloroethane
<0.15 0.151.0 ug/L 08/13/24 15:29 11,3-Dichloropropane
<0.099 0.0991.0 ug/L 08/13/24 15:29 1Tetrachloroethene
<0.067 0.0671.0 ug/L 08/13/24 15:29 1Dibromochloromethane
<0.42 0.421.0 ug/L 08/13/24 15:29 11,2-Dibromoethane
<0.069 0.0691.0 ug/L 08/13/24 15:29 1Chlorobenzene
<0.091 0.0911.0 ug/L 08/13/24 15:29 11,1,1,2-Tetrachloroethane
<0.10 0.101.0 ug/L 08/13/24 15:29 1Ethylbenzene
<0.35 0.351.0 ug/L 08/13/24 15:29 1Freon 113
<0.18 0.182.0 ug/L 08/13/24 15:29 1m,p-Xylenes
<0.088 0.0881.0 ug/L 08/13/24 15:29 1o-Xylene
<0.082 0.0821.0 ug/L 08/13/24 15:29 1Styrene
<0.20 0.201.0 ug/L 08/13/24 15:29 1Bromoform
<0.066 0.0661.0 ug/L 08/13/24 15:29 14-Isopropyltoluene
<0.085 0.0851.0 ug/L 08/13/24 15:29 11,1,2,2-Tetrachloroethane
<0.13 0.131.0 ug/L 08/13/24 15:29 1Bromobenzene
<0.15 0.151.0 ug/L 08/13/24 15:29 11,2,3-Trichloropropane
<0.073 0.0731.0 ug/L 08/13/24 15:29 1N-Propylbenzene
<0.10 0.101.0 ug/L 08/13/24 15:29 12-Chlorotoluene
<0.10 0.101.0 ug/L 08/13/24 15:29 11,3,5-Trimethylbenzene
Eurofins Raleigh
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QC Sample Results
Job ID: 752-22856-1Client: Earth Systems LLC
Project/Site: Church St FF/BP #172
Method: SM6200-B - Volatile Organic Compounds (Continued)
Client Sample ID: Method BlankLab Sample ID: MB 752-8342/12
Matrix: Water Prep Type: Total/NA
Analysis Batch: 8342
RL MDL
4-Chlorotoluene <0.10 1.0 0.10 ug/L 08/13/24 15:29 1
MB MB
Analyte Dil FacAnalyzedPreparedDUnitResultQualifier
<0.094 0.0941.0 ug/L 08/13/24 15:29 1tert-Butylbenzene
<0.067 0.0671.0 ug/L 08/13/24 15:29 11,2,4-Trimethylbenzene
<0.053 0.0531.0 ug/L 08/13/24 15:29 1sec-Butylbenzene
<0.092 0.0921.0 ug/L 08/13/24 15:29 11,3-Dichlorobenzene
<0.13 0.131.0 ug/L 08/13/24 15:29 1Isopropylbenzene
<0.10 0.101.0 ug/L 08/13/24 15:29 11,4-Dichlorobenzene
<0.074 0.0741.0 ug/L 08/13/24 15:29 1n-Butylbenzene
<0.052 0.0521.0 ug/L 08/13/24 15:29 11,2-Dichlorobenzene
<0.48 0.481.0 ug/L 08/13/24 15:29 11,2-Dibromo-3-Chloropropane
0.106 J 0.0971.0 ug/L 08/13/24 15:29 11,2,4-Trichlorobenzene
<0.15 0.151.0 ug/L 08/13/24 15:29 1Hexachlorobutadiene
<0.22 0.221.0 ug/L 08/13/24 15:29 1Xylenes, Total
<0.25 0.251.0 ug/L 08/13/24 15:29 11,2,3-Trichlorobenzene
<0.086 0.0861.0 ug/L 08/13/24 15:29 1Naphthalene
Toluene-d8 (Surr)91 70-130 08/13/24 15:29 1
MB MB
Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery
83 08/13/24 15:29 14-Bromofluorobenzene (Surr)70-130
96 08/13/24 15:29 1Dibromofluoromethane (Surr)70-130
Client Sample ID: Lab Control SampleLab Sample ID: LCS 752-8342/8
Matrix: Water Prep Type: Total/NA
Analysis Batch: 8342
Dichlorodifluoromethane 20.0 24.1 ug/L 120 60-140
Analyte
LCS LCS
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits
Chloromethane 20.0 19.1 ug/L 96 60-140
Vinyl chloride 20.0 22.6 ug/L 113 60-140
Bromomethane 20.0 16.1 ug/L 80 60-140
Chloroethane 20.0 19.8 ug/L 99 60-140
Trichlorofluoromethane 20.0 23.1 ug/L 115 60-140
1,1-Dichloroethene 20.0 23.0 ug/L 115 70-130
Methylene Chloride 20.0 21.9 ug/L 109 70-130
Methyl tert-butyl ether 20.0 23.7 ug/L 118 70-130
trans-1,2-Dichloroethene 20.0 21.8 ug/L 109 70-130
1,1-Dichloroethane 20.0 21.7 ug/L 108 70-130
Isopropyl ether 20.0 23.5 ug/L 118 70-130
cis-1,2-Dichloroethene 20.0 24.3 ug/L 121 70-130
2,2-Dichloropropane 20.0 25.1 ug/L 126 70-130
Bromochloromethane 20.0 21.3 ug/L 107 70-130
Chloroform 20.0 19.3 ug/L 96 70-130
1,1,1-Trichloroethane 20.0 22.9 ug/L 115 70-130
1,1-Dichloropropene 20.0 22.7 ug/L 113 70-130
Carbon tetrachloride 20.0 23.1 ug/L 116 70-130
1,2-Dichloroethane 20.0 21.3 ug/L 107 70-130
Benzene 20.0 21.3 ug/L 107 70-130
Trichloroethene 20.0 21.5 ug/L 108 70-130
Eurofins Raleigh
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QC Sample Results
Job ID: 752-22856-1Client: Earth Systems LLC
Project/Site: Church St FF/BP #172
Method: SM6200-B - Volatile Organic Compounds (Continued)
Client Sample ID: Lab Control SampleLab Sample ID: LCS 752-8342/8
Matrix: Water Prep Type: Total/NA
Analysis Batch: 8342
1,2-Dichloropropane 20.0 21.2 ug/L 106 70-130
Analyte
LCS LCS
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits
Dibromomethane 20.0 22.1 ug/L 111 70-130
Bromodichloromethane 20.0 22.2 ug/L 111 70-130
cis-1,3-Dichloropropene 20.0 23.7 ug/L 118 70-130
Toluene 20.0 20.5 ug/L 102 70-130
trans-1,3-Dichloropropene 20.0 23.8 ug/L 119 70-130
1,1,2-Trichloroethane 20.0 21.0 ug/L 105 70-130
1,3-Dichloropropane 20.0 20.6 ug/L 103 70-130
Tetrachloroethene 20.0 22.0 ug/L 110 70-130
Dibromochloromethane 20.0 21.7 ug/L 109 70-130
1,2-Dibromoethane 20.0 21.5 ug/L 107 70-130
Chlorobenzene 20.0 21.2 ug/L 106 70-130
1,1,1,2-Tetrachloroethane 20.0 21.0 ug/L 105 70-130
Ethylbenzene 20.0 22.8 ug/L 114 70-130
Freon 113 40.0 57.6 *+ug/L 144 70-130
m,p-Xylenes 40.0 47.5 ug/L 119 70-130
o-Xylene 20.0 22.9 ug/L 115 70-130
Styrene 20.0 23.4 ug/L 117 70-130
Bromoform 20.0 22.8 ug/L 114 70-130
4-Isopropyltoluene 20.0 20.1 ug/L 101 70-130
1,1,2,2-Tetrachloroethane 20.0 21.0 ug/L 105 70-130
Bromobenzene 20.0 22.4 ug/L 112 70-130
1,2,3-Trichloropropane 20.0 21.0 ug/L 105 70-130
N-Propylbenzene 20.0 24.3 ug/L 121 70-130
2-Chlorotoluene 20.0 22.0 ug/L 110 70-130
1,3,5-Trimethylbenzene 20.0 22.7 ug/L 113 70-130
4-Chlorotoluene 20.0 22.2 ug/L 111 70-130
tert-Butylbenzene 20.0 23.7 ug/L 118 70-130
1,2,4-Trimethylbenzene 20.0 23.3 ug/L 117 70-130
sec-Butylbenzene 20.0 25.6 ug/L 128 70-130
1,3-Dichlorobenzene 20.0 21.5 ug/L 108 70-130
Isopropylbenzene 20.0 24.8 ug/L 124 70-130
1,4-Dichlorobenzene 20.0 21.1 ug/L 105 70-130
n-Butylbenzene 20.0 24.0 ug/L 120 70-130
1,2-Dichlorobenzene 20.0 21.2 ug/L 106 70-130
1,2-Dibromo-3-Chloropropane 20.0 23.1 ug/L 115 70-130
1,2,4-Trichlorobenzene 20.0 22.8 ug/L 114 70-130
Hexachlorobutadiene 20.0 22.6 ug/L 113 70-130
Xylenes, Total 60.0 70.4 ug/L 117 70-130
1,2,3-Trichlorobenzene 20.0 22.4 ug/L 112 70-130
Naphthalene 20.0 24.5 ug/L 123 70-130
Toluene-d8 (Surr)70 -130
Surrogate
95
LCS LCS
Qualifier Limits%Recovery
944-Bromofluorobenzene (Surr)70 -130
94Dibromofluoromethane (Surr)70 -130
Eurofins Raleigh
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QC Sample Results
Job ID: 752-22856-1Client: Earth Systems LLC
Project/Site: Church St FF/BP #172
Method: SM6200-B - Volatile Organic Compounds (Continued)
Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 752-8342/9
Matrix: Water Prep Type: Total/NA
Analysis Batch: 8342
Dichlorodifluoromethane 20.0 21.8 ug/L 109 60-140 10
Analyte
LCSD LCSD
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits LimitRPD
RPD
Chloromethane 20.0 18.3 ug/L 91 60-140 5
Vinyl chloride 20.0 20.2 ug/L 101 60-140 11
Bromomethane 20.0 15.2 ug/L 76 60-140 6
Chloroethane 20.0 15.8 ug/L 79 60-140 23
Trichlorofluoromethane 20.0 20.8 ug/L 104 60-140 10
1,1-Dichloroethene 20.0 20.5 ug/L 103 70-130 11
Methylene Chloride 20.0 19.7 ug/L 99 70-130 10
Methyl tert-butyl ether 20.0 22.1 ug/L 111 70-130 7
trans-1,2-Dichloroethene 20.0 19.9 ug/L 100 70-130 9
1,1-Dichloroethane 20.0 19.6 ug/L 98 70-130 10
Isopropyl ether 20.0 21.9 ug/L 110 70-130 7
cis-1,2-Dichloroethene 20.0 22.5 ug/L 112 70-130 8
2,2-Dichloropropane 20.0 22.7 ug/L 113 70-130 10
Bromochloromethane 20.0 20.0 ug/L 100 70-130 6
Chloroform 20.0 17.6 ug/L 88 70-130 9
1,1,1-Trichloroethane 20.0 20.9 ug/L 104 70-130 9
1,1-Dichloropropene 20.0 20.4 ug/L 102 70-130 11
Carbon tetrachloride 20.0 21.2 ug/L 106 70-130 9
1,2-Dichloroethane 20.0 20.1 ug/L 101 70-130 6
Benzene 20.0 19.6 ug/L 98 70-130 8
Trichloroethene 20.0 19.5 ug/L 97 70-130 10
1,2-Dichloropropane 20.0 19.6 ug/L 98 70-130 8
Dibromomethane 20.0 20.3 ug/L 101 70-130 9
Bromodichloromethane 20.0 20.2 ug/L 101 70-130 9
cis-1,3-Dichloropropene 20.0 21.6 ug/L 108 70-130 9
Toluene 20.0 19.4 ug/L 97 70-130 6
trans-1,3-Dichloropropene 20.0 22.9 ug/L 114 70-130 4
1,1,2-Trichloroethane 20.0 19.5 ug/L 98 70-130 7
1,3-Dichloropropane 20.0 19.2 ug/L 96 70-130 7
Tetrachloroethene 20.0 20.3 ug/L 102 70-130 8
Dibromochloromethane 20.0 20.6 ug/L 103 70-130 5
1,2-Dibromoethane 20.0 20.1 ug/L 101 70-130 6
Chlorobenzene 20.0 19.6 ug/L 98 70-130 8
1,1,1,2-Tetrachloroethane 20.0 19.7 ug/L 99 70-130 7
Ethylbenzene 20.0 21.2 ug/L 106 70-130 7
Freon 113 40.0 52.2 *+ug/L 131 70-130 10
m,p-Xylenes 40.0 44.0 ug/L 110 70-130 8
o-Xylene 20.0 21.3 ug/L 107 70-130 7
Styrene 20.0 21.8 ug/L 109 70-130 7
Bromoform 20.0 21.5 ug/L 107 70-130 6
4-Isopropyltoluene 20.0 18.6 ug/L 93 70-130 8
1,1,2,2-Tetrachloroethane 20.0 20.1 ug/L 101 70-130 5
Bromobenzene 20.0 20.8 ug/L 104 70-130 8
1,2,3-Trichloropropane 20.0 19.4 ug/L 97 70-130 8
N-Propylbenzene 20.0 22.6 ug/L 113 70-130 7
2-Chlorotoluene 20.0 20.7 ug/L 104 70-130 6
1,3,5-Trimethylbenzene 20.0 21.4 ug/L 107 70-130 6
Eurofins Raleigh
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QC Sample Results
Job ID: 752-22856-1Client: Earth Systems LLC
Project/Site: Church St FF/BP #172
Method: SM6200-B - Volatile Organic Compounds (Continued)
Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 752-8342/9
Matrix: Water Prep Type: Total/NA
Analysis Batch: 8342
4-Chlorotoluene 20.0 20.9 ug/L 104 70-130 6
Analyte
LCSD LCSD
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits LimitRPD
RPD
tert-Butylbenzene 20.0 22.1 ug/L 110 70-130 7
1,2,4-Trimethylbenzene 20.0 22.0 ug/L 110 70-130 6
sec-Butylbenzene 20.0 23.7 ug/L 118 70-130 8
1,3-Dichlorobenzene 20.0 20.4 ug/L 102 70-130 5
Isopropylbenzene 20.0 23.0 ug/L 115 70-130 8
1,4-Dichlorobenzene 20.0 19.9 ug/L 99 70-130 6
n-Butylbenzene 20.0 22.0 ug/L 110 70-130 9
1,2-Dichlorobenzene 20.0 20.2 ug/L 101 70-130 5
1,2-Dibromo-3-Chloropropane 20.0 21.8 ug/L 109 70-130 6
1,2,4-Trichlorobenzene 20.0 21.9 ug/L 109 70-130 4
Hexachlorobutadiene 20.0 20.7 ug/L 104 70-130 9
Xylenes, Total 60.0 65.3 ug/L 109 70-130 8
1,2,3-Trichlorobenzene 20.0 21.8 ug/L 109 70-130 3
Naphthalene 20.0 23.7 ug/L 119 70-130 3
Toluene-d8 (Surr)70 -130
Surrogate
88
LCSD LCSD
Qualifier Limits%Recovery
844-Bromofluorobenzene (Surr)70 -130
86Dibromofluoromethane (Surr)70 -130
Client Sample ID: Lab Control SampleLab Sample ID: MRL 752-8342/7
Matrix: Water Prep Type: Total/NA
Analysis Batch: 8342
Dichlorodifluoromethane 1.00 1.43 ug/L 143
Analyte
MRL MRL
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits
Chloromethane 1.00 1.45 ug/L 145
Vinyl chloride 1.00 1.18 ug/L 118
Bromomethane 1.00 1.85 ug/L 185
Chloroethane 1.00 1.06 ug/L 106
Trichlorofluoromethane 1.00 1.28 ug/L 128
1,1-Dichloroethene 1.00 1.55 ug/L 155
Methylene Chloride 1.00 0.458 J ug/L 46
Methyl tert-butyl ether 1.00 1.21 ug/L 121
trans-1,2-Dichloroethene 1.00 1.61 ug/L 161
1,1-Dichloroethane 1.00 1.43 ug/L 143
Isopropyl ether 1.00 1.20 ug/L 120
cis-1,2-Dichloroethene 1.00 1.48 ug/L 148
2,2-Dichloropropane 1.00 1.43 ug/L 143
Bromochloromethane 1.00 1.34 ug/L 134
Chloroform 1.00 1.47 ug/L 147
1,1,1-Trichloroethane 1.00 1.51 ug/L 151
1,1-Dichloropropene 1.00 1.44 ug/L 144
Carbon tetrachloride 1.00 1.28 ug/L 128
1,2-Dichloroethane 1.00 1.34 ug/L 134
Benzene 1.00 1.39 ug/L 139
Trichloroethene 1.00 1.51 ug/L 151
Eurofins Raleigh
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QC Sample Results
Job ID: 752-22856-1Client: Earth Systems LLC
Project/Site: Church St FF/BP #172
Method: SM6200-B - Volatile Organic Compounds (Continued)
Client Sample ID: Lab Control SampleLab Sample ID: MRL 752-8342/7
Matrix: Water Prep Type: Total/NA
Analysis Batch: 8342
1,2-Dichloropropane 1.00 1.31 ug/L 131
Analyte
MRL MRL
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits
Dibromomethane 1.00 1.38 ug/L 138
Bromodichloromethane 1.00 1.25 ug/L 125
cis-1,3-Dichloropropene 1.00 1.15 ug/L 115
Toluene 1.00 1.48 ug/L 148
trans-1,3-Dichloropropene 1.00 1.11 ug/L 111
1,1,2-Trichloroethane 1.00 1.19 ug/L 119
1,3-Dichloropropane 1.00 1.17 ug/L 117
Tetrachloroethene 1.00 1.60 ug/L 160
Dibromochloromethane 1.00 1.12 ug/L 112
1,2-Dibromoethane 1.00 1.13 ug/L 113
Chlorobenzene 1.00 1.48 ug/L 148
1,1,1,2-Tetrachloroethane 1.00 1.17 ug/L 117
Ethylbenzene 1.00 1.46 ug/L 146
Freon 113 1.00 1.53 ug/L 153
m,p-Xylenes 2.00 2.86 ug/L 143
o-Xylene 1.00 1.27 ug/L 127
Styrene 1.00 1.20 ug/L 120
Bromoform 1.00 1.12 ug/L 112
4-Isopropyltoluene 1.00 1.91 ug/L 191
1,1,2,2-Tetrachloroethane 1.00 1.23 ug/L 123
Bromobenzene 1.00 1.44 ug/L 144
1,2,3-Trichloropropane 1.00 1.26 ug/L 126
N-Propylbenzene 1.00 1.63 ug/L 163
2-Chlorotoluene 1.00 1.47 ug/L 147
1,3,5-Trimethylbenzene 1.00 1.38 ug/L 138
4-Chlorotoluene 1.00 1.52 ug/L 152
tert-Butylbenzene 1.00 1.41 ug/L 141
1,2,4-Trimethylbenzene 1.00 1.38 ug/L 138
sec-Butylbenzene 1.00 1.48 ug/L 148
1,3-Dichlorobenzene 1.00 1.61 ug/L 161
Isopropylbenzene 1.00 1.37 ug/L 137
1,4-Dichlorobenzene 1.00 1.71 ug/L 171
n-Butylbenzene 1.00 1.71 ug/L 171
1,2-Dichlorobenzene 1.00 1.52 ug/L 152
1,2-Dibromo-3-Chloropropane 1.00 1.27 ug/L 127
1,2,4-Trichlorobenzene 1.00 1.77 ug/L 177
Hexachlorobutadiene 1.00 2.09 ug/L 209
Xylenes, Total 3.00 4.13 ug/L 138
1,2,3-Trichlorobenzene 1.00 1.68 ug/L 168
Naphthalene 1.00 1.26 ug/L 126
Toluene-d8 (Surr)70 -130
Surrogate
93
MRL MRL
Qualifier Limits%Recovery
854-Bromofluorobenzene (Surr)70 -130
95Dibromofluoromethane (Surr)70 -130
Eurofins Raleigh
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QC Association Summary
Job ID: 752-22856-1Client: Earth Systems LLC
Project/Site: Church St FF/BP #172
GC/MS VOA
Analysis Batch: 8342
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch
Water SM6200-B752-22856-1 - DL MW-1A Total/NA
Water SM6200-BMB 752-8342/12 Method Blank Total/NA
Water SM6200-BLCS 752-8342/8 Lab Control Sample Total/NA
Water SM6200-BLCSD 752-8342/9 Lab Control Sample Dup Total/NA
Water SM6200-BMRL 752-8342/7 Lab Control Sample Total/NA
Eurofins Raleigh
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Lab Chronicle
Client: Earth Systems LLC Job ID: 752-22856-1
Project/Site: Church St FF/BP #172
Client Sample ID: MW-1A Lab Sample ID: 752-22856-1
Matrix: WaterDate Collected: 08/08/24 10:28
Date Received: 08/08/24 12:55
Analysis SM6200-B RY50DL8342 EET RAL
Type
Batch Batch
MethodPrep Type LabAnalystRun
Prepared
or Analyzed
Batch
Number
Dilution
Factor
Total/NA 08/13/24 19:56
Laboratory References:
EET RAL = Eurofins Raleigh, 104 Woodwinds Industrial Court, Suite A, Cary, NC 27511, TEL [phone]
Eurofins Raleigh
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Accreditation/Certification Summary
Client: Earth Systems LLC Job ID: 752-22856-1
Project/Site: Church St FF/BP #172
Laboratory: Eurofins Raleigh
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
Authority Program Identification Number Expiration Date
Florida NELAP E87610 06-30-25
North Carolina (DW)State 37724 07-31-25
North Carolina (WW/SW)State 591 12-31-24
Virginia NELAP 460146 06-14-25
Eurofins Raleigh
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Method Summary
Job ID: 752-22856-1Client: Earth Systems LLC
Project/Site: Church St FF/BP #172
Method Method Description LaboratoryProtocol
SMSM6200-B Volatile Organic Compounds EET RAL
SMSM6200-B Purge and Trap EET RAL
Protocol References:
SM = "Standard Methods For The Examination Of Water And Wastewater"
Laboratory References:
EET RAL = Eurofins Raleigh, 104 Woodwinds Industrial Court, Suite A, Cary, NC 27511, TEL [phone]
Eurofins Raleigh
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Sample Summary
Client: Earth Systems LLC Job ID: 752-22856-1
Project/Site: Church St FF/BP #172
Lab Sample ID Client Sample ID Matrix Collected Received
752-22856-1 MW-1A Water 08/08/24 10:28 08/08/24 12:55
Eurofins RaleighPage 20 of 22 8/15/2024
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Login Sample Receipt Checklist
Client: Earth Systems LLC Job Number: 752-22856-1
Login Number: 22856
Question Answer Comment
Creator: Barnes, Sara
List Source: Eurofins Raleigh
List Number: 1
TrueRadioactivity wasn't checked or is </= background as measured by a survey
meter.
TrueThe cooler's custody seal, if present, is intact.
TrueSample custody seals, if present, are intact.
TrueThe cooler or samples do not appear to have been compromised or
tampered with.
TrueSamples were received on ice.
TrueCooler Temperature is acceptable.
TrueCooler Temperature is recorded.
TrueCOC is present.
TrueCOC is filled out in ink and legible.
TrueCOC is filled out with all pertinent information.
TrueIs the Field Sampler's name present on COC?
TrueThere are no discrepancies between the containers received and the COC.
TrueSamples are received within Holding Time (excluding tests with immediate
HTs)
TrueSample containers have legible labels.
TrueContainers are not broken or leaking.
TrueSample collection date/times are provided.
TrueAppropriate sample containers are used.
TrueSample bottles are completely filled.
TrueSample Preservation Verified.
TrueThere is sufficient vol. for all requested analyses, incl. any requested
MS/MSDs
TrueContainers requiring zero headspace have no headspace or bubble is
<6mm (1/4").
TrueMultiphasic samples are not present.
TrueSamples do not require splitting or compositing.
TrueResidual Chlorine Checked.
Eurofins Raleigh
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From:Gene Mao
To:James Dodson
Subject:FW: Site Check Report Revised - Church Street Family Fare BP #172 - Greensboro, NC - Fac ID 00-0-0000009710
Date:Tuesday, July 30, 2024 8:28:18 AM
Attachments:image157046.png
image159996.png
image036961.png
image409473.png
image508995.png
image842130.png
image199228.png
image719377.png
image970450.png
image203580.png
Speedway 8165 vs Family Fare 172.pdf
James,

I suggest taking a GW sample from MW-1A in mid-August to see the
contamination levels. If they are low, I will not make a new release
incident.

Let me know if you have any question.

Thank you.

Gene Mao​​​​
Hydrogeologist
Public Health
Guilford County Government
400 West Market Street, Greensboro, NC 27401
336-641-3589 | m: 336-451-7638 | f: 336-641-4812
[e-mail] | www.guilfordcountync.gov
From: Gene Mao <[e-mail]>
Sent: Monday, July 29, 2024 3:49 PM
To: James Dodson <[e-mail]>
Cc: Brown, James <[e-mail]>
Subject: RE: Site Check Report Revised - Church Street Family Fare BP #172 - Greensboro, NC - Fac ID
00-0-0000009710

James Dodson;

I have reviewed the groundwater sampling results from MW-1A for Family
Fare #172. Additionally, I examined the groundwater monitoring well (MW)
network, flow direction, and sampling results for the last sampling event in
December 2014 before incident closure for Speedway #8165.

Here are the key findings:

MW-1, located downgradient from the underground storage tank
(UST) basin at the Speedway facility, exhibited high benzene
concentration.
Groundwater flowed westerly in December 2014.
Benzene levels were less than 100 ppb in MW-2 and below 2L in
all other upgradient and cross-gradient wells.
MW-1A, situated immediately downgradient from former MW-2,
detected benzene at 1200 ppb in May 2024, indicating a new
release at the site.

Although benzene concentration decreased significantly in July 2024,
additional sampling events are necessary before no further action can be
considered.

Thank you.

Gene Mao​​​​
Hydrogeologist
Public Health
Guilford County Government
400 West Market Street, Greensboro, NC 27401
336-641-3589 | m: 336-451-7638 | f: 336-641-4812
[e-mail] | www.guilfordcountync.gov
From: James Dodson <[e-mail]>
Sent: Friday, July 26, 2024 10:09 AM
To: Brown, James <[e-mail]>
Cc: Gene Mao <[e-mail]>
Subject: Re: Site Check Report Revised - Church Street Family Fare BP #172 - Greensboro, NC - Fac ID
00-0-0000009710

*WARNING* This email originated outside Guilford County'semail system. *WARNING*Do not click unrecognized links or attachments. When in doubt, usethe Phish Alert Report button.
Hi James and Gene, Please find attached a copy of the above referenced revised report. The report has been revisedsince the original site check activities were inadvertently performed for the westernmost regularunleaded gasoline spill bucket instead of the westernmost regular unleaded gasoline UST STPsump. Please let me know if you have any questions. Thanks. James Dodson, P.G. | Operations Manager - Carolinas | [e-mail] |ESNC Environmental Consulting, P.C.1408 Christian Avenue Suite 11 | Durham, NC 27705 T. 919.910.7767 | M. 919.356.0236