WI0500180_Documentation of compliance actions_20240627

June 27, 2024

Michael Hall
North Carolina Department of Environmental Quality
Division of Water Resources, Raleigh Regional Office
1628 Mail Service Center
Raleigh, North Carolina 27699

Subject: 102 City Hall Plaza and 200 North Mangum Street
Durham, Durham County, North Carolina
Permit No. WI0500180
Mid-Atlantic Job No. R3791.02

Dear Mr. Hall:

Mid-Atlantic Associates, Inc. (Mid-Atlantic) is pleased to submit this summary of environmental
services performed at the 102 City Hall Plaza and 200 North Mangum Street site on behalf of
NP Loden Durham, LLC. Included in this report are the action items requested by the North
Carolina Department of Environmental Quality (NCDEQ), Division of Water Resources (DWR),
Raleigh Regional Office (RRO) following the site inspection and sampling activities in August
and October 2023 and a summary of the activities completed to satisfy these action items.

Project Background Information
The Subject Property is located at 102 City Hall Plaza and 200 North Mangum Street in
Durham, North Carolina. The site is identified by Durham County PIN number 0821-12-97-6353,
consists of 0.42 acres, and is currently developed with two multi-tenant retail/commercial
buildings totaling approximately 33,000 square feet.

The site was issued Permit No. WI0500180 on December 12, 2023 for the continued operation
of three geothermal heating/cooling water return wells. Prior to issuance, the NCDEQ DWR,
RRO completed an inspection of the site on August 8, 2023 and returned to the site on October
27, 2023 to inspect and sample the three geothermal well systems. Groundwater test results
indicated that concentrations of fecal and total coliform were above North Carolina Groundwater
Quality Standards (NCGQS) in all samples analyzed. On January 16, 2024, the RRO requested
the following items be achieved and documented within 90 days of permit issuance:

 Contact the RRO and verify the correct nomenclature of the wells and their locations;
 Identify and label all the wells and their sample ports and provide the RRO with proof
(photograph of the wells) that this has been done;
102 City Hall Plaza and 200 North Mangum Street June 27, 2024
Durham, North Carolina Page 2
 Have a licensed well driller inspect the vault and well seal for W2, make repairs as
necessary, and provide a written verification to the RRO summarizing these repairs and
affirming that the vault and well seal are sound;
 Ensure that the vault for W1 is readily accessible; and
 Take steps to verify the laboratory analytical results for coliform. If the wells and
geothermal systems are found to contain coliform, have a licensed well driller disinfect
the wells and geothermal systems, and verify that the seals for all the wells are sound,
and do not allow infiltration of surface water.

Summary of Field Activities

Mid-Atlantic confirmed the nomenclature of the well systems and their locations during a visit to the
site on February 28, 2024. Mid-Atlantic sent a site map via email to NCDEQ on March 5, 2024 to
verify the correct locations of the well systems.

Trademasters Service, Inc. was contracted by NP Loden Durham, LLC to label each well and their
sampling ports. Mid-Atlantic sent photographs of the properly labeled wells and their sampling
ports via email to NCDEQ on March 5, 2024.

N.W. Poole Well and Pump Co. was contracted by NP Loden Durham, LLC to inspect the vault
and seal for W2. N.W. Poole Well and Pump Co. replaced the well cap with a new aluminum well
cap and replaced the seal for W2 on April 9, 2024.

During the site visit on April 9, 2024, Mid-Atlantic confirmed that W1 is readily accessible. The well
cover is properly labeled and visible.

On April 9, 2024, N.W. Poole Well and Pump Co. disinfected each of the three well systems in
response to the presence of fecal and total coliform in each well during the October 2023 sampling
performed by NCDEQ. Following chlorination, the well systems were run for approximately 8 hours
until chlorine was no longer detected in the systems.

Due to technical issues with well system W2 following disinfection, Mid-Atlantic delayed sampling
for fecal and total coliform until repairs were complete. On June 20, 2024, Mid-Atlantic collected a
total of six water samples from the three geothermal well systems. Mid-Atlantic collected samples
from the supply ports (W1-I, W2-I, and W3-I) and from the return ports (W1-E, W2-E, and W3-E) of
each well system. Each sample was analyzed for fecal coliform (Method IDEXX Coliform) and total
coliform (Method SM 9223B). Neither fecal nor total coliform were detected in the well systems.

102 City Hall Plaza and 200 North Mangum Street June 27, 2024
Durham, North Carolina Page 3
Conclusions

The activities described herein address the requested items outlined in the letter to NP Loden
Durham, LLC from the RRO dated January 16, 2024.

Sincerely,

MID-ATLANTIC ASSOCIATES, INC.

Daniel H. Nielsen, PE Madeline Hook
Principal Engineer Staff Scientist

Attachments: Site Map
Geothermal Well Photo Log
Laboratory Analytical Report and Chain of Custody Record
DRAWN BY:DATE:
ENG. CHECK:
JOB NO:DRAFTCHECK: GIS NO:
´
1 inch = 65 feet
0 100 20050Feet
REFERENCES:
1. 2021 AERIAL IMAGERY FROM NC ONEMAP2. COUNTY INFORMATION FROM DURHAM COUNTY GIS3. MID-ATLANTIC FIELD NOTES
SITE MAP102 CITY HALL PLAZADURHAM, NORTH CAROLINA
APPROVAL:
MARCH 2024
DWG NO: 1
R3791.02
Legend
#*Location of Well
Subject Site
Parcel Boundaries
05G-R3791.02-1
MRH
#*
#*#*
W3
W2 W1Approximate Location of Sampling Ports for W1 and W2
Approximate Location of Sampling Ports for W3
102 City Hall Plaza and 200 North Mangum Street
Durham, North Carolina

1

Geothermal Well Photo Log

Photo 1 - Well 1 and 2 Heat Exchanger

Photo 2 - Well 1 Return Port
102 City Hall Plaza and 200 North Mangum Street
Durham, North Carolina

2

Photo 3 – Well 1 Supply Port

Photo 4 – Well 1 Vault
102 City Hall Plaza and 200 North Mangum Street
Durham, North Carolina

3

Photo 5 – Well 2 Return Port

Photo 6 - Well 2 Supply Port
102 City Hall Plaza and 200 North Mangum Street
Durham, North Carolina

4

Photo 7 – Well 2 Vault

Photo 8 – New Seal on Well 2
102 City Hall Plaza and 200 North Mangum Street
Durham, North Carolina

5

Photo 9 – New Well Cap on Well 2

Photo 10 – Well 3 Heat Exchanger
102 City Hall Plaza and 200 North Mangum Street
Durham, North Carolina

6

Photo 11 – Well 3 Supply and Return Ports

Photo 12 – Well 3 Vault
ANALYTICAL REPORT
PREPARED FOR
Attn: Madeline Hook
Mid-Atlantic Associates
409 Rogers View Court
Raleigh, North Carolina 27610
Generated 6/24/2024 8:58:16 AM
JOB DESCRIPTION
102 City Hall Plaza
JOB NUMBER
752-21068-1
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
6/24/2024 8:58:16 AM
Authorized for release by
Nikita Kuruganty, Project Manager
[e-mail]
[phone]
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Table of Contents
Client: Mid-Atlantic Associates
Project/Site: 102 City Hall Plaza
Laboratory Job ID: 752-21068-1
Page 3 of 17
Eurofins Raleigh
6/24/2024
Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
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Definitions/Glossary
Job ID: 752-21068-1Client: Mid-Atlantic Associates
Project/Site: 102 City Hall Plaza
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 Narrative
752-21068-1
Analytical test results meet all requirements of the associated regulatory program listed on the Accreditation/Certification SummaryPage unless otherwise noted under the individual analysis. Data qualifiers are applied to indicate exceptions. Noncompliantquality control (QC) is further explained in narrative comments.
Matrix QC may not be reported if insufficient sample or site-specific QC samples were not submitted. In these situations, todemonstrate precision and accuracy at a batch level, a LCS/LCSD may be performed, unless otherwise specified in themethod.
Surrogate and/or isotope dilution analyte recoveries (if applicable) which are outside of the QC window are confirmedunless attributed to a dilution or otherwise noted in the narrative.
ReceiptThe samples were received on 6/20/2024 10:15 AM. Unless otherwise noted below, the samples arrived in good condition, and,where required, properly preserved and on ice. The temperature of the cooler at receipt time was 12.0°C.
BiologyNo additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page.
Case Narrative
Client: Mid-Atlantic Associates Job ID: 752-21068-1
Project: 102 City Hall Plaza
Eurofins Raleigh
Job ID: 752-21068-1 Eurofins Raleigh
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Detection Summary
Job ID: 752-21068-1Client: Mid-Atlantic Associates
Project/Site: 102 City Hall Plaza
Client Sample ID: W1-I Lab Sample ID: 752-21068-1
No Detections.
Client Sample ID: W1-I Lab Sample ID: 752-21068-2
No Detections.
Client Sample ID: W1-E Lab Sample ID: 752-21068-3
No Detections.
Client Sample ID: W1-E Lab Sample ID: 752-21068-4
No Detections.
Client Sample ID: W2-I Lab Sample ID: 752-21068-5
No Detections.
Client Sample ID: W2-I Lab Sample ID: 752-21068-6
No Detections.
Client Sample ID: W2-E Lab Sample ID: 752-21068-7
No Detections.
Client Sample ID: W2-E Lab Sample ID: 752-21068-8
No Detections.
Client Sample ID: W3-I Lab Sample ID: 752-21068-9
No Detections.
Client Sample ID: W3-I Lab Sample ID: 752-21068-10
No Detections.
Client Sample ID: W3-E Lab Sample ID: 752-21068-11
No Detections.
Client Sample ID: W3-E Lab Sample ID: 752-21068-12
No Detections.
Eurofins Raleigh
This Detection Summary does not include radiochemical test results.
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Client Sample Results
Job ID: 752-21068-1Client: Mid-Atlantic Associates
Project/Site: 102 City Hall Plaza
Lab Sample ID: 752-21068-1Client Sample ID: W1-I
Matrix: Drinking WaterDate Collected: 06/20/24 09:10
Date Received: 06/20/24 10:15
Method: SM 9223B - Coliforms, Total, and E.Coli (Colilert - Presence/Absence)
RL MDL
ABSENT NONE 06/20/24 15:11 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier
Escherichia coli
NONE 06/20/24 15:11 1ABSENTColiform, Total
Lab Sample ID: 752-21068-2Client Sample ID: W1-I
Matrix: WaterDate Collected: 06/20/24 09:10
Date Received: 06/20/24 10:15
Method: IDEXX Coliform - Coliforms, Fecal
RL MDL
ND 1.0 MPN/100mL 06/20/24 14:13 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier
Coliform, Fecal
Lab Sample ID: 752-21068-3Client Sample ID: W1-E
Matrix: Drinking WaterDate Collected: 06/20/24 09:15
Date Received: 06/20/24 10:15
Method: SM 9223B - Coliforms, Total, and E.Coli (Colilert - Presence/Absence)
RL MDL
ABSENT NONE 06/20/24 15:11 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier
Escherichia coli
NONE 06/20/24 15:11 1ABSENTColiform, Total
Lab Sample ID: 752-21068-4Client Sample ID: W1-E
Matrix: WaterDate Collected: 06/20/24 09:15
Date Received: 06/20/24 10:15
Method: IDEXX Coliform - Coliforms, Fecal
RL MDL
ND 1.0 MPN/100mL 06/20/24 14:13 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier
Coliform, Fecal
Lab Sample ID: 752-21068-5Client Sample ID: W2-I
Matrix: Drinking WaterDate Collected: 06/20/24 09:20
Date Received: 06/20/24 10:15
Method: SM 9223B - Coliforms, Total, and E.Coli (Colilert - Presence/Absence)
RL MDL
ABSENT NONE 06/20/24 15:11 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier
Escherichia coli
NONE 06/20/24 15:11 1ABSENTColiform, Total
Lab Sample ID: 752-21068-6Client Sample ID: W2-I
Matrix: WaterDate Collected: 06/20/24 09:20
Date Received: 06/20/24 10:15
Method: IDEXX Coliform - Coliforms, Fecal
RL MDL
ND 1.0 MPN/100mL 06/20/24 14:13 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier
Coliform, Fecal
Lab Sample ID: 752-21068-7Client Sample ID: W2-E
Matrix: Drinking WaterDate Collected: 06/20/24 09:25
Date Received: 06/20/24 10:15
Method: SM 9223B - Coliforms, Total, and E.Coli (Colilert - Presence/Absence)
RL MDL
ABSENT NONE 06/20/24 15:11 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier
Escherichia coli
Eurofins Raleigh
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Client Sample Results
Job ID: 752-21068-1Client: Mid-Atlantic Associates
Project/Site: 102 City Hall Plaza
Lab Sample ID: 752-21068-7Client Sample ID: W2-E
Matrix: Drinking WaterDate Collected: 06/20/24 09:25
Date Received: 06/20/24 10:15
Method: SM 9223B - Coliforms, Total, and E.Coli (Colilert - Presence/Absence) (Continued)
RL MDL
ABSENT NONE 06/20/24 15:11 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier
Coliform, Total
Lab Sample ID: 752-21068-8Client Sample ID: W2-E
Matrix: WaterDate Collected: 06/20/24 09:25
Date Received: 06/20/24 10:15
Method: IDEXX Coliform - Coliforms, Fecal
RL MDL
ND 1.0 MPN/100mL 06/20/24 14:13 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier
Coliform, Fecal
Lab Sample ID: 752-21068-9Client Sample ID: W3-I
Matrix: Drinking WaterDate Collected: 06/20/24 09:00
Date Received: 06/20/24 10:15
Method: SM 9223B - Coliforms, Total, and E.Coli (Colilert - Presence/Absence)
RL MDL
ABSENT NONE 06/20/24 15:11 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier
Escherichia coli
NONE 06/20/24 15:11 1ABSENTColiform, Total
Lab Sample ID: 752-21068-10Client Sample ID: W3-I
Matrix: WaterDate Collected: 06/20/24 09:00
Date Received: 06/20/24 10:15
Method: IDEXX Coliform - Coliforms, Fecal
RL MDL
ND 1.0 MPN/100mL 06/20/24 14:13 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier
Coliform, Fecal
Lab Sample ID: 752-21068-11Client Sample ID: W3-E
Matrix: Drinking WaterDate Collected: 06/20/24 09:05
Date Received: 06/20/24 10:15
Method: SM 9223B - Coliforms, Total, and E.Coli (Colilert - Presence/Absence)
RL MDL
ABSENT NONE 06/20/24 15:11 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier
Escherichia coli
NONE 06/20/24 15:11 1ABSENTColiform, Total
Lab Sample ID: 752-21068-12Client Sample ID: W3-E
Matrix: WaterDate Collected: 06/20/24 09:05
Date Received: 06/20/24 10:15
Method: IDEXX Coliform - Coliforms, Fecal
RL MDL
ND 1.0 MPN/100mL 06/20/24 14:13 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier
Coliform, Fecal
Eurofins Raleigh
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QC Sample Results
Job ID: 752-21068-1Client: Mid-Atlantic Associates
Project/Site: 102 City Hall Plaza
Method: Coliform - Coliforms, Fecal
Client Sample ID: DuplicateLab Sample ID: 752-21071-A-2 DU
Matrix: Water Prep Type: Total/NA
Analysis Batch: 7695
Coliform, Fecal ND ND MPN/100mL NC 25
Analyte
DU DU
DUnitResult Qualifier
Sample
Result
Sample
Qualifier LimitRPD
RPD
Eurofins Raleigh
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QC Association Summary
Job ID: 752-21068-1Client: Mid-Atlantic Associates
Project/Site: 102 City Hall Plaza
Biology
Analysis Batch: 7689
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch
Drinking Water SM 9223B752-21068-1 W1-I Total/NA
Drinking Water SM 9223B752-21068-3 W1-E Total/NA
Drinking Water SM 9223B752-21068-5 W2-I Total/NA
Drinking Water SM 9223B752-21068-7 W2-E Total/NA
Drinking Water SM 9223B752-21068-9 W3-I Total/NA
Drinking Water SM 9223B752-21068-11 W3-E Total/NA
Analysis Batch: 7695
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch
Water Coliform752-21068-2 W1-I Total/NA
Water Coliform752-21068-4 W1-E Total/NA
Water Coliform752-21068-6 W2-I Total/NA
Water Coliform752-21068-8 W2-E Total/NA
Water Coliform752-21068-10 W3-I Total/NA
Water Coliform752-21068-12 W3-E Total/NA
Water Coliform752-21071-A-2 DU Duplicate Total/NA
Eurofins Raleigh
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Lab Chronicle
Client: Mid-Atlantic Associates Job ID: 752-21068-1
Project/Site: 102 City Hall Plaza
Client Sample ID: W1-I Lab Sample ID: 752-21068-1
Matrix: Drinking WaterDate Collected: 06/20/24 09:10
Date Received: 06/20/24 10:15
Analysis SM 9223B CB1 7689 EET RAL
Type
Batch Batch
MethodPrep Type LabAnalystRun
Prepared
or Analyzed
Batch
Number
Dilution
Factor
Total/NA 06/20/24 15:11 - 06/21/24 11:12 ¹
Client Sample ID: W1-I Lab Sample ID: 752-21068-2
Matrix: WaterDate Collected: 06/20/24 09:10
Date Received: 06/20/24 10:15
Analysis Coliform ME1 7695 EET RAL
Type
Batch Batch
MethodPrep Type LabAnalystRun
Prepared
or Analyzed
Batch
Number
Dilution
Factor
Total/NA 06/20/24 14:13 - 06/21/24 11:10 ¹
Client Sample ID: W1-E Lab Sample ID: 752-21068-3
Matrix: Drinking WaterDate Collected: 06/20/24 09:15
Date Received: 06/20/24 10:15
Analysis SM 9223B CB1 7689 EET RAL
Type
Batch Batch
MethodPrep Type LabAnalystRun
Prepared
or Analyzed
Batch
Number
Dilution
Factor
Total/NA 06/20/24 15:11 - 06/21/24 11:12 ¹
Client Sample ID: W1-E Lab Sample ID: 752-21068-4
Matrix: WaterDate Collected: 06/20/24 09:15
Date Received: 06/20/24 10:15
Analysis Coliform ME1 7695 EET RAL
Type
Batch Batch
MethodPrep Type LabAnalystRun
Prepared
or Analyzed
Batch
Number
Dilution
Factor
Total/NA 06/20/24 14:13 - 06/21/24 11:10 ¹
Client Sample ID: W2-I Lab Sample ID: 752-21068-5
Matrix: Drinking WaterDate Collected: 06/20/24 09:20
Date Received: 06/20/24 10:15
Analysis SM 9223B CB1 7689 EET RAL
Type
Batch Batch
MethodPrep Type LabAnalystRun
Prepared
or Analyzed
Batch
Number
Dilution
Factor
Total/NA 06/20/24 15:11 - 06/21/24 11:12 ¹
Client Sample ID: W2-I Lab Sample ID: 752-21068-6
Matrix: WaterDate Collected: 06/20/24 09:20
Date Received: 06/20/24 10:15
Analysis Coliform ME1 7695 EET RAL
Type
Batch Batch
MethodPrep Type LabAnalystRun
Prepared
or Analyzed
Batch
Number
Dilution
Factor
Total/NA 06/20/24 14:13 - 06/21/24 11:10 ¹
Client Sample ID: W2-E Lab Sample ID: 752-21068-7
Matrix: Drinking WaterDate Collected: 06/20/24 09:25
Date Received: 06/20/24 10:15
Analysis SM 9223B CB1 7689 EET RAL
Type
Batch Batch
MethodPrep Type LabAnalystRun
Prepared
or Analyzed
Batch
Number
Dilution
Factor
Total/NA 06/20/24 15:11 - 06/21/24 11:12 ¹
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Lab Chronicle
Client: Mid-Atlantic Associates Job ID: 752-21068-1
Project/Site: 102 City Hall Plaza
Client Sample ID: W2-E Lab Sample ID: 752-21068-8
Matrix: WaterDate Collected: 06/20/24 09:25
Date Received: 06/20/24 10:15
Analysis Coliform ME1 7695 EET RAL
Type
Batch Batch
MethodPrep Type LabAnalystRun
Prepared
or Analyzed
Batch
Number
Dilution
Factor
Total/NA 06/20/24 14:13 - 06/21/24 11:10 ¹
Client Sample ID: W3-I Lab Sample ID: 752-21068-9
Matrix: Drinking WaterDate Collected: 06/20/24 09:00
Date Received: 06/20/24 10:15
Analysis SM 9223B CB1 7689 EET RAL
Type
Batch Batch
MethodPrep Type LabAnalystRun
Prepared
or Analyzed
Batch
Number
Dilution
Factor
Total/NA 06/20/24 15:11 - 06/21/24 11:12 ¹
Client Sample ID: W3-I Lab Sample ID: 752-21068-10
Matrix: WaterDate Collected: 06/20/24 09:00
Date Received: 06/20/24 10:15
Analysis Coliform ME1 7695 EET RAL
Type
Batch Batch
MethodPrep Type LabAnalystRun
Prepared
or Analyzed
Batch
Number
Dilution
Factor
Total/NA 06/20/24 14:13 - 06/21/24 11:10 ¹
Client Sample ID: W3-E Lab Sample ID: 752-21068-11
Matrix: Drinking WaterDate Collected: 06/20/24 09:05
Date Received: 06/20/24 10:15
Analysis SM 9223B CB1 7689 EET RAL
Type
Batch Batch
MethodPrep Type LabAnalystRun
Prepared
or Analyzed
Batch
Number
Dilution
Factor
Total/NA 06/20/24 15:11 - 06/21/24 11:12 ¹
Client Sample ID: W3-E Lab Sample ID: 752-21068-12
Matrix: WaterDate Collected: 06/20/24 09:05
Date Received: 06/20/24 10:15
Analysis Coliform ME1 7695 EET RAL
Type
Batch Batch
MethodPrep Type LabAnalystRun
Prepared
or Analyzed
Batch
Number
Dilution
Factor
Total/NA 06/20/24 14:13 - 06/21/24 11:10 ¹
¹ This procedure uses a method stipulated length of time for the process. Both start and end times are displayed.
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: Mid-Atlantic Associates Job ID: 752-21068-1
Project/Site: 102 City Hall Plaza
Laboratory: Eurofins Raleigh
Unless otherwise noted, all analytes for this laboratory were covered under each accreditation/certification below.
Authority Program Identification Number Expiration Date
North Carolina (DW)State 37724 07-31-24
The following analytes are included in this report, but the laboratory is not certified by the governing authority. This list may include analytes
for which the agency does not offer certification.
Analysis Method Prep Method Matrix Analyte
Coliform Water Coliform, Fecal
Eurofins Raleigh
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Method Summary
Job ID: 752-21068-1Client: Mid-Atlantic Associates
Project/Site: 102 City Hall Plaza
Method Method Description LaboratoryProtocol
IDEXXColiformColiforms, Fecal EET RAL
SMSM 9223B Coliforms, Total, and E.Coli (Colilert - Presence/Absence)EET RAL
Protocol References:
IDEXX = IDEXX Laboratories
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: Mid-Atlantic Associates Job ID: 752-21068-1
Project/Site: 102 City Hall Plaza
Lab Sample ID Client Sample ID Matrix Collected Received
752-21068-1 W1-I Drinking Water 06/20/24 09:10 06/20/24 10:15
752-21068-2 W1-I Water 06/20/24 09:10 06/20/24 10:15
752-21068-3 W1-E Drinking Water 06/20/24 09:15 06/20/24 10:15
752-21068-4 W1-E Water 06/20/24 09:15 06/20/24 10:15
752-21068-5 W2-I Drinking Water 06/20/24 09:20 06/20/24 10:15
752-21068-6 W2-I Water 06/20/24 09:20 06/20/24 10:15
752-21068-7 W2-E Drinking Water 06/20/24 09:25 06/20/24 10:15
752-21068-8 W2-E Water 06/20/24 09:25 06/20/24 10:15
752-21068-9 W3-I Drinking Water 06/20/24 09:00 06/20/24 10:15
752-21068-10 W3-I Water 06/20/24 09:00 06/20/24 10:15
752-21068-11 W3-E Drinking Water 06/20/24 09:05 06/20/24 10:15
752-21068-12 W3-E Water 06/20/24 09:05 06/20/24 10:15
Eurofins Raleigh
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Pa
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7
6/
2
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1234567891011121314
Login Sample Receipt Checklist
Client: Mid-Atlantic Associates Job Number: 752-21068-1
Login Number: 21068
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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