MO-30129_49188_CA_IAR_20230807_Greenbay HOA

CEDAR ROCK ENVIRONMENTAL, P. C.
107 Pioneer Trail
Graham, NC 27253
[phone]

August 7, 2023

Mr. Ron Taraban
NCDEQ
Division of Waste Management - UST Section
610 East Center Avenue
Mooresville, North Carolina 28115

Reference: Initial Abatement Action Report for the Greenbay Forest HOA Inc. Property
147 Greenbay Road, Mooresville, Iredell County
Incident Number: Pending

Cedar Rock Project Number: 358322590

Dear Mr. Taraban:

Please accept this Initial Abatement Action Report for a release of diesel from one commercial, regulated
underground storage tank (UST) formerly located at the above referenced property. This report satisfies
the requirements specified in the Underground Storage Tank Section Guidelines for Site Checks, Tank
Closure, and Initial Response and Abatement, Change 11 (May 17, 2021).

One commercial, regulated UST, formerly used for storing diesel, was removed from the subject property
on July 19, 2023. No soils were excavated from beneath the former location of the UST. The laboratory
results for two soil samples collected from beneath the UST showed that petroleum residuals exceeding
applicable standards are present in the soils beneath the former location of the UST. Due to the difficult
access to the former UST location, excavation of the contaminated soils in the source area is technically
infeasible. Therefore, a Limited Site Assessment (LSA) will be required.

If you have any questions or need additional information, please give me a call.

Sincerely,

Robert A. Payne, L.G.

Enclosure
cc: Greenbay Forest HOA Inc. c/o Mr. Michael Isenhour, Alluvia HOA Management – Property Owner
Cedar Rock
ENVIRONMENTAL

CEDAR ROCK ENVIRONMENTAL, P. C.
107 Pioneer Trail
Graham, NC 27253
[phone]

August 7, 2023

Mr. Michael Isenhour
Alluvia HOA Management
P. O. Box 825
Denver, NC 28037

Reference: Initial Abatement Action Report

Dear Mr. Isenhour:

Cedar Rock Environmental, P.C. (Cedar Rock) is pleased to submit this Initial Abatement Action
Report to satisfy the requirements specified in the Underground Storage Tank Section Guidelines
for Site Checks, Tank Closure, and Initial Response and Abatement, Change 11 (May 17, 2021)
for a release of diesel from the former underground storage system located at the 147 Greenbay
Road property in Mooresville, North Carolina. This report should be maintained for your records.
A copy of this report has been sent to the North Carolina Department of Environmental Quality
(NCDEQ), Division of Waste Management (DWM), UST Section in Mooresville.

Enclosed is an invoice for this work effort. If you have any questions, please feel free to contact
me at 336-684-2734.

Sincerely,

Robert A. Payne, L.G.
President
Cedar Rock
ENVIRONMENTAL

INITIAL ABATEMENT
ACTION REPORT

GREENBAY FOREST HOA INC. PROPERTY
147 GREENBAY ROAD
MOORESVILLE, IREDELL COUNTY

Date Release Discovered: July 19, 2023
Source: One 10,500 Gallon Diesel UST

Incident No.: Pending

Prepared by:
Cedar Rock Environmental, P.C.
107 Pioneer Trail, Graham, North Carolina

August 7, 2023

CRE Project #358322590

Title Page
INITIAL ABATEMENT ACTION REPORT

A. Site Information
1. Project name: Greenbay Forest HOA Inc. Property
2. Facility ID #: Not known
3. Site Facility address, county, and telephone no.: 147 Greenbay Road, Mooresville, NC 28117,
Iredell County.
4. Latitude and longitude of release: 35.598959 °N / 80.921568 °W (from Google Earth).

B. Release Information
1. Incident number: Pending.
2. Date release discovered: July 19, 2023.
3. Estimated quantity of release: Unknown.
4. Cause of release: Unknown.
5. Source of release: One 10,500-gallon UST.

C. Ownership Information
1. Name, address, and telephone number of current UST owner: Greenbay Forest HOA Inc. c/o
Michael Isenhour, Alluvia HOA Management, P. O. Box 825, Denver, NC 28037.
2. Name and address of current property owner: Same as above.

D. Consultant/contractors
1. Primary consultant: Cedar Rock Environmental, P.C.
107 Pioneer Trail, Graham, NC 27253
Robert A. Payne, L.G. [phone]

2. UST Removal: Terra Nova Solutions
901 East Springfield Road,
High Point, NC 27263 [phone]

3. Laboratory: Pace Analytical Services, LLC
North Carolina Field Services Certification #5342
1377 South Park Drive, Kernersville, NC 27284 [phone]

E. Report Certification

I, Robert A. Payne , a Licensed Geologist for
Cedar Rock Environmental, P.C., do certify that
the information contained in this report is correct
and accurate to the best of my knowledge. License #: 970
(Signature & Seal)

Cedar Rock Environmental, P.C. is licensed to practice geology in North Carolina. The certification
number of the corporation is C-324 .

August 7, 2023
i
TABLE OF CONTENTS

Section Page No.

1.0 SITE HISTORY AND CHARACTERIZATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2.0 INITIAL RESPONSE AND ABATEMENT ACTIVITIES . . . . . . . . . . . . . . . . . . . . . . . 1

3.0 EXCAVATION OF CONTAMINATED SOIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3.1 Field Activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3.2 Soils Investigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3.3 Discussion of Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

4.0 CONCLUSIONS AND RECOMMENDATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

5.0 REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Figures

1 Site Location Map
2 Site Map
3 Sample Locations and Results

Table

1 UST Owner and Operator Information
2 UST System Information
3 Summary of Soil Sampling Results

Appendices

A Photographic Documentation
B UST-3 and UST-2 Forms
C Disposal Manifests
D Sampling & Decontamination Procedures
E Laboratory Report & Chain-of-Custody

1.0 SITE HISTORY AND CHARACTERIZATION
The project site is an undeveloped community area located at 147 Greenbay Road in Mooresville,
North Carolina (see Figure 1). The approximate location of one 10,500-gallon diesel underground
storage tank (UST), identified as T1, is shown in Figure 2. Table 1 lists pertinent storage tank
system ownership information. Table 2 lists specific UST information for T1. The subject site is
an undeveloped seventeen-acre property surrounded by residential properties. Due to the difficult
access to the UST location, excavation of soils from the UST location is not feasible.
2.0 INITIAL RESPONSE AND ABATEMENT ACTIVITIES
Tank removal activities were performed on July 19, 2023, under the supervision of Cedar Rock
Environmental (Cedar Rock). Prior to removing T1 from the ground, approximately 925 gallons
of water and diesel were removed from the tank by Terra Nova Solutions of High Point, North
Carolina. Upon removal from the ground, evidence of minor leakage from the UST was observed
on the underside of the tank.
No free product was encountered during the initial abatement activities. There are no other
subsurface structures on the subject site where free product or vapors could accumulate, or that
would provide a migration pathway for the release. The possibility of an explosion or the threat
to public health and safety or to the environment from the accumulation of vapors does not appear
to be of concern at this time. Therefore, the release is unlikely to be a significant fire/safety/health
hazard.
The Notice of Intent: UST Permanent Closure or Change-in-Service Form (UST-3) was submitted
to the North Carolina Department of Environmental Quality (NCDEQ), Division of Waste
Management (DWM), UST Section in Mooresville on July 13, 2023. Copies of the UST-3 form
and the Site Investigation Report for Permanent Closure or Change-In-Service - UNREGISTERED
TANKS Form (UST-2B) are included in Appendix B. The 24-Hour Release Report and UST Leak
Reporting Form (UST-61) was submitted to the North Carolina Department of Environmental
Quality (NCDEQ), Division of Waste Management (DWM), UST Section in Mooresville on
August 7, 2023.
3.0 EXCAVATION OF CONTAMINATED SOIL
3.1 Field Activities
Tank closure activities were performed on July 19, 2023 (see photographs in Appendix A).
Neither bedrock nor groundwater were encountered during removal of the UST. No soils were
excavated from beneath the UST. The subject UST was disposed of by Terra Nova Solutions
at the D. H. Griffin facility in High Point, North Carolina. Copies of the fluids and UST
disposal manifests are included in Appendix C.
1

3.2 Soils Investigation

According to the Geologic Map of North Carolina (1985), the subject site is underlain by
granitic rock. On July 19, 2023, Cedar Rock collected two soil samples, CR-1 and CR-2, from
approximately one foot beneath the former location of T1. Sample locations are shown in
Figure 3. The soil samples were collected according to the sampling procedures included in
Appendix D.

Soil samples CR-1 through CR 2 were submitted to the laboratory to be analyzed for Diesel
Range Organics (DRO) and Gasoline Range Organics (GRO) by EPA Method 8015C. DRO
were quantified at concentrations of 141 parts per million (ppm) in sample CR-1, and 1,030
ppm in sample CR-2. Results presented in bold exceeded the applicable TPH Action Limits.
No GRO were quantified in samples CR-1 and CR-2. Soil sampling activities and results are
summarized in Table 3. A copy of the laboratory report and chain-of-custody is included in
Appendix E.

3.3 Discussion of Results

Figure 3 shows a plan view of the source area and soil sample locations in relation to the former
location of the UST. Two soil samples were collected from beneath the former location of the
UST. As shown in Table 3, petroleum constituents exceeding applicable standards were
quantified in these soil samples.

4.0 CONCLUSIONS AND RECOMMENDATIONS

One commercial, regulated UST, formerly used for storing diesel, was removed from the subject
property on July 19, 2023. No soils were excavated from beneath the former location of the UST.
The laboratory results for two soil samples collected from beneath the UST showed that petroleum
residuals exceeding applicable standards are present in the soils beneath the former location of the
UST. Due to the difficult access to the former UST location, excavation of the contaminated soils
in the source area is technically infeasible. Therefore, a Limited Site Assessment (LSA) will be
required.

5.0 REFERENCES

24-Hour Release Report and UST Leak Reporting Form (UST-61); submitted to the North Carolina
Department of Environmental Quality, Division of Waste Management, UST Section,
Mooresville Regional Office on August 7, 2023.

Underground Storage Tank Section Guidelines for Site Checks, Tank Closure, and Initial
Response and Abatement, Change 11; published by the North Carolina Department of
Environmental Quality, Division of Waste Management, UST Section, May 17, 2021.

Geologic Map of North Carolina; published by the North Carolina Department of Natural
Resources and Community Development, Division of Land Resources, 1985. 2

FIGURES

Topo North America™ 10
Location: 35.598959 °N / 80.921568 °W
FIGURE 1. SITE LOCATION
Data use subject to license.
© DeLorme. Topo North America™ 10.
www.delorme.com
TN
MN (8.2°W)
0 200 400 600 800 1000
0 100 200 300 400 500
ftm
Scale 1 : 12,000
1" = 1,000.0 ft Data Zoom 14-3
PROJECT: ____________________________CEDAR ROCK
ENVIRONMENTAL, P. C.SITE MAPINCIDENT #: __________________________
LOCATION: ___________________________
___________________________
CRE PROJECT NUMBER: _______________
FILENAME: ____________________
VERSION DATE: ________________
: T1 = 10,500-Gallon UST
Greenbay Forest HOA Inc Property
Pending
147 Greenbay Avenue
Mooresville, Iredell Co.
358322590
3583-Fig2.tcw
8/4/2023
N
FIGURE 2
0 150 300 600
1 inch = 300 feet
(approximate)
T1 (approx. location)
John Pedone
Property
TDK Land
Management Inc.
Property
Jacob
Blotter
PropertyCody
Homistek
Property
Greenbay Forest
HOA Inc. Property
Michelle Stephenson
Property
Luis Ramirez
Property
Ajit Bhat
Property
Stephen
Sokolski
Property Charles
Colburn
Property
Gary
Bisbee
Property
Cathy
Peacock
Property
Piedmont Diving
and Rescue Association
Property
Aqua North
Carolina Inc.
Property
Woodland Waterview LLC
Property
Lucas Lambert
Property
: Property Lines
Greenbay Road
PROJECT: ____________________________CEDAR ROCK
ENVIRONMENTAL, P. C.
SAMPLE
LOCATIONS
AND RESULTS
INCIDENT #: __________________________
LOCATION: ___________________________
___________________________
CRE PROJECT NUMBER: _______________
FILENAME: ____________________
VERSION DATE: ________________
0 5 10 20
1 inch = 10 feet
: T1 = 10,500-Gallon UST
Greenbay Forest HOA Inc Property
Pending
147 Greenbay Avenue
Mooresville, Iredell Co.
358322590
3583-Fig3.tcw
8/3/2023
N
FIGURE 3
: Sample Locations (CR-x)
T1
1
2
CR-1
Sample ID Depth (ft.)DRO 8015 (ppm)GRO 8015 (ppm)
SOIL SAMPLE ANALYTICAL SUMMARY
14.0 141 ND
CR-2 14.0 1,030 ND

TABLES

TABLE 1
UST OWNER AND OPERATOR INFORMATION

Greenbay Forest HOA Inc Property
147 Greenbay Road, Mooresville, Iredell County
UST ID Number T1 Facility ID Number N/A (residential)
Name of Owner/Operator Dates of Ownership
Greenbay Forest HOA Inc c/o
Michael Isenhour, Alluvia HOA
Management ? – present
Street Address
P. O. Box 825
City State Zip Telephone Number
Denver NC 28037 704-746-9070

TABLE 2
UST SYSTEM INFORMATION

Greenbay Forest HOA Inc Property
147 Greenbay Road, Mooresville, Iredell County

UST ID
Number
Current/Last
Contents
Previous
Contents
Capacity
(in gallons)
Construction
Details
Tank
Dimensions
(in feet)
Description
of Assoc.
Piping/Pumps
Date Tank
Installed
Status of
UST
Was a release
associated
with the
system?
T1 (UST)

#2 Diesel #2 Diesel 10,500 Steel 10.0 x 18.0 None. Unknown Removed
on
7/19/2023.
Yes,
discovered on
7/19/2023.

TABLE 3
SUMMARY OF SOIL SAMPLING RESULTS

Greenbay Forest HOA Inc Property
147 Greenbay Road, Mooresville, Iredell County

Parameter (Analytical Method)
TPH Action Limit CR-1 CR-2
Diesel Range Organics (EPA Method 8015) 100 141 1,030
Gasoline Range Organics
(EPA Method 8015) 50 ND ND
Sample Collection Procedure Hand Grab Hand Grab
Sample Location One foot below end of T1. One foot below end of T1.
Sample Depth (ft. bls) 14.0 14.0
Date of Sample Collection 7/19/23 7/19/23
Incident Phase UST Closure UST Closure
Results and TPH Action Limit in parts per million (ppm).
bls = below land surface
ND = Not Detected Results for in bold and shaded exceeded the TPH Action Limits.

APPENDIX A

Photographic Documentation

Photo 1. View of the UST site prior to excavation activities.

Photo 2. View of the UST being lifted from the ground.

Photo 3. View of the UST site after completion of excavation activities.

Photo 4. View of the UST being carried offsite showing the difficult access.

APPENDIX B

UST-3 and UST-2B Forms

APPENDIX C

Disposal Manifests

APPENDIX D

Sampling & Decontamination Procedures

CEDAR ROCK ENVIRONMENTAL, P.C.
EQUIPMENT DECONTAMINATION PROCEDURES

Every effort will be made to prevent cross-contamination of soil and groundwater samples before,
during, and after sample collection. It is company policy that drillers contracted by Cedar Rock decontaminate their drilling and sampling equipment with steam prior to, and after, each use and/or
each boring. The following procedures apply to the decontamination of field equipment used by
Cedar Rock employees.

Soil Sampling Equipment
Stainless steel hand augers, spoons, and knives will be cleaned prior to, and after, each use and/or
each boring. If hand auger advancement of a borehole through contaminated soil is obvious or suspected, a clean auger bucket will be used to retrieve the sample portion. A fresh pair of
disposable vinyl gloves will be worn while handling the sample container.
Sampling equipment will be decontaminated by washing with phosphate-free soapy water; rinsing
in tap water followed by an isopropyl alcohol rinse; and a final “triple” rinse with distilled water.
The equipment will then be allowed to air dry. Clean sampling spoons and knives will be stored in a fresh ziplock bag.
If available, steam may be used instead of the above procedure.

Groundwater Sampling Equipment
Use of groundwater level measuring devices will proceed from the wells known to be the least
contaminated to those known to be more contaminated. If it is not known how contaminated the wells are, measurements will be taken on the up gradient wells prior to the down gradient wells.
A fresh pair of disposable vinyl gloves will be worn at each well during water level and sample
collection.
Water level measuring and well sampling (i.e., pumps and lines) devices will be decontaminated between wells by washing the wetted portion of the device as described above.

Each well will be sampled with a new disposable or decontaminated, dedicated bailer during each sampling event. New nylon or cotton string will be used during each sampling event on each
bailer. If the bailer contains a significant quantity of silt or sand after purging the well of stagnant
water, the bailer may be flushed with distilled water. The bailer will never come into contact with anything other than a gloved hand or the inside of the well casing. While allowing the well to
recover, the bailer will be hung inside the well at the top of the casing. The string will be coiled and placed in a ziplock bag or vinyl glove such that it does not come into contact with other objects.

Groundwater sample containers will be wiped dry and stored in individual ziplock bags.

CEDAR ROCK ENVIRONMENTAL, P.C.
SOIL SAMPLING PROCEDURES (Collection and Handling)

Soil sampling will be performed by, or under, the direct supervision of a North Carolina licensed geologist. Care will be taken to minimize the loss of contaminants from the sample during sample
collection, storage, and transport through disturbance of the internal structure of the soil and
exposure to heat, sunlight, and air. Decontamination and handling procedures will be used that minimize the chance of cross-contamination of the samples during and after sample collection.

All tools used to retrieve, divide, and collect the sample portion (e.g., hand augers, split-barrel
sampler, stainless steel spoons, etc.) will be decontaminated prior to and after each use (between
samples). See Decontamination Procedures.
Vinyl disposable gloves will be worn during sample collection. Gloves will be changed as
necessary after handling the sampling equipment (i.e., after breaking open split-barrels) to avoid cross-contamination. Contact between the gloved hand and the soil will be minimized by dividing
and collecting the sample portion using a stainless steel spoon or knife.
The sample portion will be collected from the core of the soil at the end of the sampling device
where the deepest retrieved soil is represented (e.g., hand auger teeth). If the sample is being
retrieved using the backhoe bucket, the sample portion will be collected from the consolidated material located directly behind one of the bucket teeth. A separate sampling implement will be
used to scrape away foreign material if present and/or the soil which came into contact with the sample retrieving device in order to expose the core of the sample portion to be collected.

Immediately upon removal from the ground, the sample will be placed in a laboratory-provided, decontaminated container. The sample container will be precooled, if possible, to minimize loss
of volatiles. The sample portion will be disturbed as little as possible during placement into the
container. The container will be filled leaving no head-space and immediately capped and sealed.
Immediately upon collection, the exterior of the sample container will be wiped free of soil, if
necessary, and placed in a ziplock bag to minimize cross-contamination. The sample will immediately be placed in a cooler of ice for storage and transport to the analytical laboratory.
The sample will be labeled with sample identification number, project number, date and time of
collection, and analyses to be conducted. The sample will be transported as soon as practical to a
North Carolina certified laboratory under chain-of-custody.

APPENDIX E

Laboratory Report & Chain-of-Custody
#=CL#
July 26, 2023
LIMS USE: FR - ROBERT PAYNE
LIMS OBJECT ID: 92678647
92678647
Project:
Pace Project No.:
RE:
Robert Payne
Cedar Rock Environmental
107 Pioneer Trail
Graham, NC 27253
ALLUVIA HOA MANAGEMENT
Dear Robert Payne:
Enclosed are the analytical results for sample(s) received by the laboratory on July 21, 2023. The results relate only to the
samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the
laboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report.
The test results provided in this final report were generated by each of the following laboratories within the Pace Network:
• Pace Analytical Services - Charlotte
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Stephanie Knott
[e-mail]
Project Manager
704-977-0981
Enclosures
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 1 of 13
#=CP#
CERTIFICATIONS
Pace Project No.:
Project:
92678647
ALLUVIA HOA MANAGEMENT
Pace Analytical Services Charlotte
South Carolina Laboratory ID: 99006
9800 Kincey Ave. Ste 100, Huntersville, NC 28078
North Carolina Drinking Water Certification #: 37706
North Carolina Field Services Certification #: 5342
North Carolina Wastewater Certification #: 12
South Carolina Laboratory ID: 99006
South Carolina Certification #: 99006001
South Carolina Drinking Water Cert. #: 99006003
Florida/NELAP Certification #: E87627
Kentucky UST Certification #: 84
Louisiana DoH Drinking Water #: LA029
Virginia/VELAP Certification #: 460221
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 2 of 13
#=SS#
SAMPLE SUMMARY
Pace Project No.:
Project:
92678647
ALLUVIA HOA MANAGEMENT
Lab ID Sample ID Matrix Date Collected Date Received
92678647001 CR-1 Solid 07/19/23 10:45 07/21/23 09:42
92678647002 CR-2 Solid 07/19/23 10:50 07/21/23 09:42
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 3 of 13
#=SA#
SAMPLE ANALYTE COUNT
Pace Project No.:
Project:
92678647
ALLUVIA HOA MANAGEMENT
Lab ID Sample ID Method
Analytes
Reported LaboratoryAnalysts
92678647001 CR-1 EPA 8015C 2 PASI-CHH
EPA 8015C 2 PASI-CTEG
SW-846 1 PASI-CKDF
92678647002 CR-2 EPA 8015C 2 PASI-CHH
EPA 8015C 2 PASI-CTEG
SW-846 1 PASI-CKDF
PASI-C = Pace Analytical Services - Charlotte
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 4 of 13
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92678647
ALLUVIA HOA MANAGEMENT
Sample:CR-1 Lab ID:92678647001 Collected:07/19/23 10:45 Received:07/21/23 09:42 Matrix:Solid
Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions.
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: EPA 8015C Preparation Method: EPA 3546
Pace Analytical Services - Charlotte
8015 GCS THC-Diesel
Diesel Range Organics(C10-C28)141 mg/kg 07/24/23 17:16 M107/22/23 17:385.3 1
Surrogates
n-Pentacosane (S)69 %07/24/23 17:16 629-99-207/22/23 17:3810-133 1
Analytical Method: EPA 8015C Preparation Method: EPA 5030B
Pace Analytical Services - Charlotte
Gasoline Range Organics
Gas Range Organics (C6-C10)ND mg/kg 07/24/23 22:4007/24/23 12:157.9 1
Surrogates
4-Bromofluorobenzene (S)102 %07/24/23 22:40 460-00-407/24/23 12:1566-130 1
Analytical Method: SW-846
Pace Analytical Services - Charlotte
Percent Moisture
Percent Moisture 7.7 %07/21/23 17:38 N20.10 1
Sample:CR-2 Lab ID:92678647002 Collected:07/19/23 10:50 Received:07/21/23 09:42 Matrix:Solid
Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions.
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: EPA 8015C Preparation Method: EPA 3546
Pace Analytical Services - Charlotte
8015 GCS THC-Diesel
Diesel Range Organics(C10-C28)1030 mg/kg 07/25/23 13:01 D607/22/23 17:3827.2 5
Surrogates
n-Pentacosane (S)106 %07/25/23 13:01 629-99-207/22/23 17:3810-133 5
Analytical Method: EPA 8015C Preparation Method: EPA 5030B
Pace Analytical Services - Charlotte
Gasoline Range Organics
Gas Range Organics (C6-C10)ND mg/kg 07/24/23 23:0607/24/23 12:158.5 1
Surrogates
4-Bromofluorobenzene (S)102 %07/24/23 23:06 460-00-407/24/23 12:1566-130 1
Analytical Method: SW-846
Pace Analytical Services - Charlotte
Percent Moisture
Percent Moisture 8.7 %07/21/23 17:39 N20.10 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 07/26/2023 01:03 PM
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 5 of 13
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92678647
ALLUVIA HOA MANAGEMENT
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
788759
EPA 5030B
EPA 8015C
Gasoline Range Organics
Laboratory:Pace Analytical Services - Charlotte
Associated Lab Samples:92678647001, 92678647002
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:4088288
Associated Lab Samples:92678647001, 92678647002
Matrix:Solid
Analyzed
Gas Range Organics (C6-C10)mg/kg ND 5.9 07/24/23 14:55
4-Bromofluorobenzene (S)%105 66-130 07/24/23 14:55
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
4088289LABORATORY CONTROL SAMPLE:
LCSSpike
Gas Range Organics (C6-C10)mg/kg 50.749.5 102 70-130
4-Bromofluorobenzene (S)%107 66-130
Parameter Units
MS
Result
% Rec
Limits Qualifiers% RecConc.
4088291MATRIX SPIKE SAMPLE:
MSSpike
Result
92678247016
Gas Range Organics (C6-C10)mg/kg 825934 81 57-154<112
4-Bromofluorobenzene (S)%115 66-130
Parameter Units
Dup
Result
Max
RPD QualifiersRPDResult
92678247003
4088290SAMPLE DUPLICATE:
Gas Range Organics (C6-C10)mg/kg ND 30<49.6
4-Bromofluorobenzene (S)%106106
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 07/26/2023 01:03 PM
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 6 of 13
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92678647
ALLUVIA HOA MANAGEMENT
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
788628
EPA 3546
EPA 8015C
8015 Solid GCSV
Laboratory:Pace Analytical Services - Charlotte
Associated Lab Samples:92678647001, 92678647002
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:4087818
Associated Lab Samples:92678647001, 92678647002
Matrix:Solid
Analyzed
Diesel Range Organics(C10-C28)mg/kg ND 5.0 07/24/23 17:01
n-Pentacosane (S)%83 10-133 07/24/23 17:01
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
4087819LABORATORY CONTROL SAMPLE:
LCSSpike
Diesel Range Organics(C10-C28)mg/kg 55.867.1 83 43-130
n-Pentacosane (S)%84 10-133
Parameter Units
MS
Result
% Rec
Limits Qualifiers% RecConc.
4087820MATRIX SPIKE SAMPLE:
MSSpike
Result
92678647001
Diesel Range Organics(C10-C28)mg/kg 258 M172.3 163 15-130141
n-Pentacosane (S)%94 10-133
Parameter Units
Dup
Result
Max
RPD QualifiersRPDResult
92678647002
4087821SAMPLE DUPLICATE:
Diesel Range Organics(C10-C28)mg/kg 608 D651301030
n-Pentacosane (S)%100106
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 07/26/2023 01:03 PM
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 7 of 13
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92678647
ALLUVIA HOA MANAGEMENT
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
788531
SW-846
SW-846
Dry Weight/Percent Moisture
Laboratory:Pace Analytical Services - Charlotte
Associated Lab Samples:92678647001, 92678647002
Parameter Units
Dup
Result
Max
RPD QualifiersRPDResult
92678691001
4087588SAMPLE DUPLICATE:
Percent Moisture %19.3 N202519.4
Parameter Units
Dup
Result
Max
RPD QualifiersRPDResult
92678654001
4087590SAMPLE DUPLICATE:
Percent Moisture %0.61 N25250.58
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 07/26/2023 01:03 PM
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 8 of 13
#=QL#
QUALIFIERS
Pace Project No.:
Project:
92678647
ALLUVIA HOA MANAGEMENT
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL - Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean-Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Reported results are not rounded until the final step prior to reporting. Therefore, calculated parameters that are typically reported as
"Total" may vary slightly from the sum of the reported component parameters.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
ANALYTE QUALIFIERS
The precision between the sample and sample duplicate exceeded laboratory control limits.D6
Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.M1
The lab does not hold NELAC/TNI accreditation for this parameter but other accreditations/certifications may apply. A
complete list of accreditations/certifications is available upon request.N2
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 07/26/2023 01:03 PM
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 9 of 13
#=CR#
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Pace Project No.:
Project:
92678647
ALLUVIA HOA MANAGEMENT
Lab ID Sample ID QC Batch Method QC Batch Analytical Method
Analytical
Batch
92678647001 788628 788699CR-1 EPA 3546 EPA 8015C
92678647002 788628 788699CR-2 EPA 3546 EPA 8015C
92678647001 788759 788801CR-1 EPA 5030B EPA 8015C
92678647002 788759 788801CR-2 EPA 5030B EPA 8015C
92678647001 788531CR-1 SW-846
92678647002 788531CR-2 SW-846
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 07/26/2023 01:03 PM
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 10 of 13
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