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NC Registered Geologists Firm C-553
SC Registered Engineering Firm 3239
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REVISION NUMBER: 2.0
BROWNFIELDS ENVIRONMENTAL ASSESSMENT WORK PLAN
59 DEPOT STREET PROPERTY
59 DEPOT STREET
WAYENESVILLE, HAYWOOD COUNTY, NORTH CAROLINA
BROWNFIELDS PROJECT ID. 26033-22-044
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PREPARED FOR
PHG WAYNESVILLE, LLC
June 20, 2023
Work Plan Certification
I, Don R. Marlor, P.G., a Licensed Geologist for ECS Southeast, LLP (North Carolina
Licensed Geologist Firm C-553), do certify that the information contained herein is correct
and accurate to the best of my knowledge.
REM
Don R. Marlor, P.G.
NC License No. 2645
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ECS Capitol Services, PLLC • ECS Florida, LLC • ECS Mid -Atlantic, LLC • ECS Midwest, LLC • ECS Southeast, LLP - ECS Southwest, LLP
ECS SOUTHEAST, LLP "Setting the Standard for Service"
Geotechnical - Construction Materials - Environmental - Facilities NC Registered Engineering Firm F-1078
NC Registered Geologists Firm C-553
SC Registered Engineering Firm 3239
Ms. Carolyn Minnich June 20, 2023
North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Redevelopment Section
1646 Mail Service Center
Raleigh, North Carolina 27699-1646
Reference: Brownfields Environmental Assessment Work Plan Rev. 2.0
59 Depot Street Property
59 Depot Street
Brownfields Project No. 26033-22-044
ECS Project No. 49-16550-A
Dear Ms. Minnich:
ECS Southeast, LLP (ECS) has prepared this work plan to collect soil, groundwater, and soil
gas samples at the above referenced site. This plan has been developed at the request of
the North Carolina Department of Environmental Quality (NCDEQ) Brownfields
Redevelopment Section (BRS). Also included with the submittal is a completed Minimum
Requirements Checklist and Assessment Work Plan Approval Signature Page.
ECS appreciates the opportunity to work with your Program. If you have any questions
concerning this work plan or this project, please contact us.
Sincerely,
ECS SOUTHEAST, LLP
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Don R. Marlor, P.G.
Environmental Staff Project Manager
828-785-4183
dmarlor(a)-ecslimited.com
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Joseph P. Nestor, P.G., P.E.
Environmental Principal
919-861-9846
swerleyt@-ecslimited.com
Enclosures: Brownfields Environmental Assessment Work Plan
Assessment Work Plan Approval Signature Page.
ECS Capitol Services, PLLC • ECS Florida, LLC • ECS Mid -Atlantic, LLC • ECS Midwest, LLC • ECS Southeast, LLP • ECS Southwest, LLP
www.ecslimited.com
SD
ROY COOPER :'P'►�
Governor
ELIZABETH S. BISER sr
Secretary
MICHAEL SCOTT NORTH CAROLINA
Director Environmental Quality
ATTACHMENT 1
DEQ Brownfields Redevelopment Section
Assessment Work Plan Approval Signature Page
To be completed by Development Team and returned to DEQ Brownfields for review & signature.
Brownfields Project Name: 59 Depot Street Property
Brownfields Project Number: 26033-22-044
Work Plan Title.- Brownfields Environmental Assessment Work Plan
Date: June 20, 2023
Revision Number: 2.0
Be advised that this approval from DEQ Brownfields does not waive any applicable requirement to
obtain any necessary permits, licenses, or certifications for the above listed activities nor does it waive
any requirement to comply with applicable law for such activities.
Prospective Developer (PD): PHG Waynesville, LLC
Contact Person: Mr. Shaunak Patel
Phone Numbers: Office: 919-854-2797 Mobile: Cl icl; or tap here to enter text.
Email: Shaunak.patel@parksliotels.coin
Property Owner (if different from above): C'licl< or Lap here to enter'Lcx(.
Contact Person: Click or tell) hcrc to enter test.
Plione Numbers: Office: Click or tap hcrc to enter text. Mobile: Click or tap hcrc to enter text.
Email: Glick or tap here to enter text.
Environmental Consultant: ECS Southeast, LLP
Contact Person: Don R. Marlor, P.G.
Phone Numbers: Office: 828-785-4183
Email: dmarlor@ecslimited.com
Signature.•
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Consultant: ECS Southeast, LLP
Printed Name/Title/Company: Don R. Marlor, P.G./Project
Manager/ECS Southeast, LLP
Brownfields Project Manager: Carolyn Minnich
Phone Numbers: Office: Click or tap here to enter text
Email: Click or tap here to enter text.
Signature:
Mobile: Clicl; or tap here to enter text.
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59 Depot Street Property - Brownfields Environmental Assessment Work Plan
Brownfields Project #26033-22-044
ECS Project No. 49-16550-B
TABLE OF CONTENTS
1.0 INTRODUCTION.....................................................................................................................1
2.0 SCOPE OF WORK.................................................................................................................3
3.0 SAMPLING METHODOLOGY..............................................................................................5
4.0 LABORATORY ANALYSIS...................................................................................................9
5.0 QUALITY ASSURANCE/QUALITY CONTROL...............................................................10
6.0 INVESTIGATION DERIVED WASTE MANAGEMENT...................................................10
7.0 REPORTING.........................................................................................................................10
FIGURES
Figure 1 Site Topographic Location Map
Figure 2 Site Location and Historical Sample Location Map
Figure 3 Proposed Soil Sample Location Map
Figure 4 Proposed Groundwater and Soil Gas Sample Location Map
TABLE
Table 1 Brownfields Program Checklist for Proposed Sample Locations
APPENDIX
Appendix A Historical Sample Location Figures and Laboratory Analytical Data Tables
59 Depot Street Property - Brownfields Environmental Assessment Work Plan
Brownfields Project #26033-22-044
ECS Project No. 49-16550-B
1.0 INTRODUCTION
The 59 Depot Street Property site (the Subject Site) consists of a single parcel and a total of 0.378
acres of land (see Figures 1 and 2). It is in a commercial area of Waynesville south of Depot
Street and west of Montgomery Street. The Subject Site is currently vacant with paved areas. The
Subject Site is identified by the Wake County Online GIS Database with the following Parcel
Identification Numbers (PINs) and street address:
Street Addresses
PINs
Parcel Size
(Acres)
59 Depot St.
8615-37-2937
0.378
The prospective developer (PD), PHG Waynesville, LLC, submitted a Brownfields Property (BP)
Application on May 17, 2022. Subsequently, on August 27, 2022, a Letter of Eligibility (LOE) for
the Subject Site was issued by the Brownfields Redevelopment Section (BRS) to the PD to pursue
a brownfields agreement. The proposed redevelopment plan will include a mixed -use structure
consisting of multifamily retail space, associated structured parking, and hotel.
ECS Southeast, LLP (ECS) previously completed a Phase I Environmental Site Assessment,
Environmental Assessment, and one subsurface exploration and geotechnical evaluation, which
included historical environmental data research and soil, soil gas, and groundwater quality
sampling and analyses. The scope and findings of the prior assessment work includes the
following:
ECS completed a Phase I Environmental Site Assessment (Phase I ESA) at the site dated
March 17, 2022 (ECS Project No. 49-16550). Based on the information included in the
Phase I ESA, the Subject Site was vacant land from 1896 through 1924, when a residence
was constructed on the property. The subject property was developed with a residence
until the mid-1950s, when a building was constructed on the property. The building was
reportedly operated by a restaurant. City directories indicated that the subject property
was occupied by The Pancake House in the 1990s and Mitchell's Country Kitchen in the
early 2000s. A carpet cleaning business was in operation at the subject property in 1995.
The commercial building on the subject property appeared to be vacant from 2005 until it
was demolished in July 2021. Additionally, adjoining properties were historically occupied
by printing and dry-cleaning facilities. The Phase I ESA identified the following Recognized
Environmental Conditions (RECs):
o A groundwater sample was collected by the Dry -Cleaning Solvent Act (DSCA)
program at the Subject Site as part of assessment associated with the Central
Cleaners facility located at 44 Church Street. Laboratory analysis of this
groundwater sample indicated tetrachloroethene above North Carolina 15A
NCACO2L.0202 Groundwater Standards and the North Carolina Groundwater
Screening Level for Vapor Intrusion for both residential and non-residential use.
ECS considers the documented groundwater contamination at the subject property
to represent a REC for the subject property.
o The subject property was occupied by a carpet cleaning business in 1995. Based
on the potential for solvent use at this facility and an undocumented release to
have occurred at the subject property, ECS considers this to represent a REC for
the subject property.
59 Depot Street Property - Brownfields Environmental Assessment Work Plan
Brownfields Project #26033-22-044
ECS Project No. 49-16550-B
o Adjoining properties were historically occupied by dry cleaning facilities and
printing facilities. Based on the potential of undocumented releases to have
impacted the subject property, ECS considers the historic use of the adjoining
properties to represent a REC for the subject property.
• In an effort to identify potential contamination associated with the RECs identified during
the Phase I ESA, ECS performed an Environmental Assessment at the site in April 2022
(ECS Project No. 49:16550-A, report dated May 3, 2022) which included collection of four
soil and soil gas samples (SB-1/SG-1 through SB-1/SG-4) and three groundwater samples
(MW-1 through MW-3). Below is a summary of the findings:
o Soil samples were analyzed for Volatile Organic Compounds (VOCs) and
Semi -Volatile Organic Compounds (SVOCs). Soil sample SB-1 detected
tetrachloroethene above its Protection of Groundwater Preliminary Soil
Remediation Goal (PSRG) and toluene above its laboratory reporting limit.
Other targeted compounds were not detections above laboratory reporting
limits.
o Groundwater samples were also analyzed for VOCs and SVOCs. Laboratory
analysis of the groundwater sample collected from MW-1 detected
tetrachloroethene at a concentration above its respective NC2LGWQS. Cis-
1,2-dichloroethene, tetrachloroethene, and trichloroethene were detected in
groundwater sample MW-2 at concentrations above their respective
NC2LGWQS. Concentrations of tetrachloroethene, and trichloroethene in MW-
2 also exceeded their respective Residential and Non -Residential
Groundwater Screening Levels (GWSL) for Vapor Intrusion (VI). Groundwater
sample MW-3 detected tetrachloroethene and trichloroethene above their
respective Residential GWSL for VI. The concentration of tetrachloroethene
detected in MW-3 was also above its respective Non -Residential GWSL for VI.
o Soil gas samples were analyzed for VOCs. Laboratory analysis of soil gas
sample SG-1 detected benzene and 2-propanol above their respect
Residential Vapor Intrusion Screening Level (VISLs). Soil gas sample SG-2
detected benzene and Tetrachloroethene above their respective Residential
VISLs. Soil gas sample SG-3 detected benzene and 2-propanol above their
respective Residential VISLs. Soil gas sample SG-4 detected benzene,
chlorobenzene, 2-propanol, tetrachloroethene, 1,2,4-trimethyl benzene, 1,3,5-
tri methyl benzene, and o-xylene above their respective Residential VISLs.
Additionally, the concentration of tetrachloroethene identified in soil gas
sample SG-4 was above its respective Non -Residential VISL.
A kickoff meeting was subsequently conducted with the Brownfields Redevelopment Section
(BRS) of the Division of Waste Management (DWM) of the North Carolina Department of
Environmental Quality (NCDEQ) on March 1, 2023 to review the earlier assessment findings, and
to discuss additional work needed to fill data gaps for BRS. Historical sample location figures and
laboratory analytical data tables are included in Appendix A. This Work Plan is intended to fill
those data gaps. The identified data gaps, which are the focus of this work plan, included the
following:
• Further assess soil and/or groundwater quality across the site.
• Collect additional soil gas data at the site.
The data obtained from executing this work plan is intended for use by the BRS and not other
regulatory programs.
2
59 Depot Street Property - Brownfields Environmental Assessment Work Plan
Brownfields Project #26033-22-044
ECS Project No. 49-16550-B
Brownfields Project Contact Information
The contact information for the property owner, environmental consultant, and BRS is as follows:
Developer's Representative:
Mr. Shaunak Patel
PHG Waynesville, LLC
4242 Six Forks Road
Suite 1600
Raleigh, NC 27609
919-854-2797
Shaunak.patelC@parkshotels.com
Site Environmental Representative:
Mr. Don R. Marlor
ECS Southeast, LLP
1900 Hendersonville Road
Suite 10,
Asheville, NC 28803
828-785-4183
dmarlor(@ecslimited.com
BRS Contact:
Brownfields Redevelopment Section
NCDEQ
Division of Waste Management
BRS
Cc: Ms. Carolyn Minnich
Project Manager, BRS
Carolyn. min nich(a)ncdenr.gov
2.0 SCOPE OF WORK
The objective of this work plan is to provide a description of proposed soil, groundwater, and soil
gas assessment activities requested by BRS in the March 1, 2023 kick off meeting. During the
kick off meeting with BRS indicated they it reviewed the following reports:
Phase I Environmental Site Assessment, ECS, March 17, 2022
• Report of Environmental Assessment Services, ECS, April 28, 2012
Based upon the review by BRS of the referenced reports, data gaps were identified which the
BRS has requested to be assessed. Proposed additional soil sample locations are shown Figure
3. Proposed additional groundwater and soil gas sample locations are shown on Figure 4. In
order to meet the requests of the BRS and address data it identified, the following subsections
describe the scope of work is to be conducted under this work plan. The scope of work is to be
performed in general accordance with the Minimum Requirements Checklist for Site Assessment
Work Plans and Reports issued by the BRS in March 2023.
3
59 Depot Street Property - Brownfields Environmental Assessment Work Plan
Brownfields Project #26033-22-044
ECS Project No. 49-16550-B
2.1 Pre -Assessment Tasks
Prior to assessment activities, ECS will contact North Carolina One Call (NC811) to identify public
underground utilities at the site. This notification requires 72-hour response time exclusive
of weekends and holidays. Our experience indicates that 811 normally does not locate private
utilities. As such, ECS will provide a private utility locator to locate subsurface utilities in proposed
soil boring, temporary monitoring well, and soil gas sample locations both interior and exterior to
subject site buildings to clear utilities at the proposed boring locations.
2.2 Receptor Survey
ECS will complete a Brownfields Property Receptor Survey for the Subject Site and submit with
the Brownfields Assessment Report.
2.3 Soil Assessment
ECS will contract with a drilling firm that employs a North Carolina Certified Well Contractor
(NCCWC) to advance six (6) soil borings for the collection of soil quality samples in the area of
proposed soil removal. The borings will be advanced using a direct push technology (DPT) track -
mounted drill rig. Figure 3 has been included as a proposed in -situ sample boring location map
and illustrate the approximate locations of the proposed soil borings identified as B-1 through 13-
6. Information from the cut and fill map has been superimposed onto Figure 3. Borings will be
completed with a Direct Push Technology (DPT) drill rig provided by the drilling firm. The depth
of the borings will range from five (5) to approximately fifteen (15) feet below ground surface (bgs)
and are dependent upon the existing grade and cut plans associated with the site's
redevelopment.
Additionally, ECS proposes to advance one (1) boring in the vicinity of former soil sample SB-1
to further evaluate the previous Tetrachloroethene detection above its Protection of Groundwater
Preliminary Soil Remediation Goal (PSRG). The boring (B-7) will be advanced to approximately
10 feet bgs.
The exact locations of the soil borings will be determined in the field to avoid buried utilities,
although will be placed in the approximate locations illustrated on Figure 3 and advanced to the
approximate depths as summarized in Table 1. Soil borings will be abandoned by the drilling firm
upon completion of the sampling event.
2.4 Groundwater Assessment
ECS will contract with a drilling firm that employs a NCCWC to install three (3) permanent
monitoring wells for groundwater sample collection. The borings will be advanced using hollow
stem augers with a track -mounted DPT drill rig. Proposed monitoring wells are to be identified as
MW-4 through MW-6 and their approximate proposed locations are illustrated on Figure 4. The
exact locations of the wells will be determined in the field in order to avoid buried utilities.
The wells are proposed to be drilled to approximately 35 feet to 45 feet below bgs (approximately
10 feet into the shallow groundwater table based upon prior assessment data available for the
site). The monitoring wells will be constructed per North Carolina Administrative Code (NCAC)
2C well construction standards utilizing 2-inch diameter PVC well screen (0.010-inch slot size)
and riser pipe with its screen straddling the water table.
2.5 Exterior Soil Gas Assessment
Four (4) soil gas samples will be collected. There will be two (2) soil gas samples (SG-5 and SG-
6) collected from the locations of proposed stairwells. One (1) soil gas sample (SG-7) will be
collected from the eastern portion of the building footprint and one (1) additional soil gas sample
4
59 Depot Street Property - Brownfields Environmental Assessment Work Plan
Brownfields Project #26033-22-044
ECS Project No. 49-16550-B
(SG-8) will be collected from the location of the proposed elevator shaft. Figure 4 shows the
proposed exterior soil gas sample locations superimposed over proposed construction details
proved by the PD. The exact locations of the soil gas vapor points will be determined in the field
in order to avoid buried utilities. SG-5, SG-6, SG-7 and SG-8 will be collected at an approximate
depth of 15 feet (bg) as requested by BRS. The borings for the exterior soil gas sample points will
the excavated by advancing a macrocore soil sampler with a DPT drill rig. Proposed exterior soil
gas sample depths with additional descriptions are included in Table 1.
2.6 Additional Tasks
The top of casing for each of the proposed permanent monitoring wells will be surveyed by a
North Carolina Licensed Surveyor upon completion of the wells. This data along with dept to
groundwater data will be used to calculate the groundwater elevation at each monitoring well
which in turn will be used to estimate the groundwater flow direction. The surveyor will also
determine the horizontal location of each to the proposed soil borings, exterior soil gas monitoring
points, and monitoring wells as well as the elevation of the ground surface at each of these sample
points. The data collected by the surveyor will be tabulated and included in the Brownfields
Assessment Report.
Following receipt of laboratory results and approval by BRS, the permanent monitoring wells will
be abandoned by the drilling firm prior to construction activities. Well construction completion and
abandonment forms will be provided in the Brownfields Assessment Report. Borings logs for the
proposed soil and groundwater sample locations will be completed in the Brownfields Assessment
Report.
2.7 Reporting
A Brownfields Assessment Report summarizing the methods utilized and results of the sampling
outlined in this work plan will be submitted to the BRS. If unidentified and unexpected conditions
are encountered during the assessment, ECS will consult with the BRS. The BRS will be notified
5 days prior to starting the field work.
3.0 SAMPLING METHODOLOGY
3.1 Soil Sample Collection
Soil sampling will be conducted in general accordance with the NCDEQ, Inactive Hazardous Sites
Program Guidelines for Assessment and Cleanup (September 2022). The DPT drill rig will
advance borings from ground surface to termination depths ranging from approximately 5 feet
bgs to a maximum of 15 feet bgs. Two discreet VOC soil samples will be selected from borings
B-1 through B-6 under the supervision of ECS' field environmental professional. One composite
soil sample will be collected for SVOCs, the eight metals regulated under the Resource
Conservation and Recovery Act (RCRA 8 Metals), and hexavalent chromium from each of the
three cut intervals within Cell-1 as indicated on Figure 3. ECS will remove and cut the disposable
PVC liners produced by the DPT drill rig to expose the soil core and place an aliquot of soil from
each approximate interval of cut 0 feet to 2 feet bgs, 2 feet to 4 feet bgs, and 4 feet to the
termination depth directly into laboratory supplied sample containers using a terra core sampler.
A second aliquot of soil from each cut depth and boring will be placed directly into resealable
plastic bag to screen the soil samples for relative levels of volatile organic vapors using a
photoionization detector (PID) or similar device and for composite sampling purposes. Samples
collected from two intervals from each boring (0 feet to 2 feet bgs, 2 feet to 4 feet bgs, or 4 feet to
the termination depth) with the highest PID reading will be submitted for VOC analysis. If elevated
volatile organic vapor concentrations or visual/olfactory observations indicate evidence of soil
impacts, ECS will denote these observations on the soil boring log. Borings will be abandoned by
the drilling firm upon completion in general accordance with NCAC 2C standards. The soil borings
5
59 Depot Street Property - Brownfields Environmental Assessment Work Plan
Brownfields Project #26033-22-044
ECS Project No. 49-16550-B
will be advanced using a macro core soil sampler driven by a DPT drill rig. The borings may be
limited by refusal from buried material from the prior development. If groundwater is encountered
prior to reaching the proposed depths, the apparent groundwater depth will be noted, and the soil
sample selected for laboratory analysis will be collected from soils above the apparent soil -
groundwater interface.
The discrete soil samples are to be analyzed by EPA Method 8260 for VOCs. The composite soil
samples are to be analyzed by EPA Method 8270 for SVOCs, EPA Method 6020/7471 for RCRA
8-Metals, and hexavalent chromium by EPA Method 7199 in accordance with the attached Table
1. VOC samples will be taken as described above; soil that has been screened with the PID will
be ineligible for sampling and will not be submitted to the laboratory for analysis. Soil samples will
be delivered to the laboratory within 48 hours of collection as reasonably practical. If
circumstances do not allow the samples to be delivered within 48 hours, sample coolers will be
restocked with ice and stored under chain of custody (COC) until delivered to the laboratory. If
samples are not delivered to laboratory within 48 hours, ECS will provide documentation that
samples were kept on ice and were secure until received by laboratory.
Following the collection of representative soil samples from each boring within each cell, SVOCs,
RCRA 8-Metals, and hexavalent chromium samples will be composited by gently mixing three
representative samples collected from each boring within each cell which will result in a single
composite sample for each the three cells. Samples will be collected into laboratory
supplied/preserved containers. Following collection, they will be placed in an ice -chilled cooler for
transportation to the laboratory.
VOCs grab samples, and SVOCs and RCRA 8-metals composite samples will be taken
as follows:
Cell 1 will have one (1) will have three composite samples and twelve (12) discrete VOC
samples.
• CELL-1 (0-2) Composite, representative of approximately 532 cubic yards.
• CELL-1 (2-4) Composite, representative of approximately 532 cubic yards.
• CELL-1 (4-T) Composite, representative of approximately 345 cubic yards.
• 131, B2, B3, B4, B5, B6 (Grab), two samples from each boring.
Soil boring B-7, located in the vicinity of former soil sample SB-1, will be collected from a depth
of approximately 5 feet bgs at a similar depth to former sample SB-1. Soil sample B-7 will be
analyzed by EPA Method 8260 for VOCs, EPA Method 8270 for SVOCs, EPA Method 6020/7471
for RCRA 8-Metals, and hexavalent chromium by EPA Method 7199 in accordance with the
attached Table 1. Following collection, the sample will be placed in an ice -chilled cooler for
transportation to the laboratory.
Duplicate soil samples will be collected at a rate of one duplicate sample per container type, per
field day during the soil assessment for Quality Assurance/Quality Control (QA/QC) purposes.
The duplicates (DUP-1, DUP-2, etc.) will be submitted to the laboratory for the same soil analyses
as the sample they are duplicating (See Table 1).
Assuming that unexpected soil conditions are not encountered, at the completion of the soil boring
and sampling activities, soil cuttings generated will either be placed back into the various soil
borings or spread onsite in the vicinity of the boring locations. Should groundwater be
encountered within a boring, bentonite will be added prior to topping the boring with soil cuttings.
59 Depot Street Property - Brownfields Environmental Assessment Work Plan
Brownfields Project #26033-22-044
ECS Project No. 49-16550-B
3.2 Groundwater Sample Collection
The monitoring wells will be developed immediately after installation by overpupmping and
surging with a surge block. Following a minimum of 24 hours after the monitoring well
development activities are complete, the wells will be gauged for depth to groundwater and
sampled by low -flow sampling techniques. The groundwater samples will be collected with the
use of a bladder pump and new clean disposable polyethylene tubing in permanent well locations.
The balder pump will be decontaminated prior to use at each well. Water level measurements
will be collected during low -flow sampling and ECS will attempt to limit the drawdown in each ell
to less than one foot. ECS will keep track of the volume of water removed from each well.
Groundwater geochemistry measurements including pH, temperature, conductivity, and turbidity
will be collected at intervals of approximately 3 to 5 minutes with the use of a flow through cell
and water quality meter. Samples will be collected when geochemical parameters have stabilized
or after 90 minutes of low flow pumping. Stabilization will be considered to have occurred when
three consecutive reading indicate:
• pH remains constant within 0.1 Standard Units (SU)
• Specific Conductance varies no more than 5 percent
• Turbidity varies no more than 10 percent or is less than 10 Nephelometric Turbidity Units
(NTUs)
Three groundwater samples (MW-4 through MW-6) will be collected into laboratory
supplied/preserved sample containers once geochemistry parameter measurements. The
groundwater samples will be submitted for analysis of VOCs by EPA Method 8260, SVOCs by
EPA Method 8270, and RCRA 8-Metals by EPA Method 6020/7470 in accordance with the
attached Table 1. Groundwater samples will be delivered to the laboratory within 48 hours of
collection. If circumstances do not allow the samples to be delivered within 48 hours, sample
coolers will be restocked with ice and stored under chain of custody (COC) until delivered to the
laboratory. If samples are not delivered to laboratory within 48 hours, ECS will provide
documentation that samples were kept on ice and were secure until receipt by laboratory.
In addition to these groundwater samples, the BRS typically require additional samples submitted
for laboratory analysis consisting of a minimum of one duplicate sample per analysis per day and
a trip blank (for VOC analysis only) per each sample shipment. Therefore, ECS proposes one (1)
additional duplicate groundwater sample for analysis for each day of sampling and one (1) trip
blank for VOC analysis. In addition, will collect one (1) equipment blank by pumping distilled water
through the bladder pump after it has been decontaminated. See the attached Table 1 for a
summary of the groundwater sampling and analysis.
3.3 Exterior Soil Gas Sample Collection
Four (4) soil gas samples will be collected. Soil gas samples (SG-5 through SG-8) will be exterior
soil gas samples collected at depth approximately 20 feet bgs.
The soil gas sampling will be conducted in general accordance with the NCDEQ Vapor Intrusion
Guidance (March 2018, Version 2). The borings for the exterior soil gas sample points will the
excavated by advancing a macrocore soil sampler with a DPT drill rig. Samples will be analyzed
by EPA Method TO-15 for VOCs, including naphthalene. Refer to Table 1 for proposed sample
depths.
Once each external boring has reached termination depth, dedicated Nylafow tubing and a
stainless -steel expendable implant will be lowered into the boring. Coarse filter sand will placed
around and approximately 1 foot above the implant. The remaining space above the sand will
consist of bentonite which will be hydrated with distilled water. An air -tight cap will be attached to
the above -ground end of the Nylaflow tubing and will remain in place until sampling is performed.
7
59 Depot Street Property - Brownfields Environmental Assessment Work Plan
Brownfields Project #26033-22-044
ECS Project No. 49-16550-B
The DPT installed exterior soil gas points will be allowed to stabilize for a minimum of 24 hours
before soil gas sample collection. The soil gas points will be purged at time of installation.
Prior to collecting the soil gas samples in Summa canisters, a shut-in test will be conducted to
assess for leaks. Additionally, the seal of each sampling point will be leak tested using helium
gas. A shroud, and a helium detector as recommended in NCDEQ- DWM Vapor Intrusion
Guidance. A shroud will be placed and sealed over each sampling point, sample train, and
Summa canister. The shroud will be flooded with laboratory grade helium via the hose placed
through the shroud wall. The concentration of helium inside the shroud will be measured with a
helium detector (Model MGD 2002 Multi -Gas Leak detector or similar device). The sample train
and interstitial space of each sampling point will be purged of at least 3 volumes via tubing routed
through the wall of the shroud to a syringe. The flow rate during purging will be at a rate of
approximately 200 milliliters per minute or less. Following purging, a soil gas sample will be
withdrawn and extracted soil gas will be directed to a Tedlar bag and monitored with a helium
detector. If the concentration measured in the Tedlar bag is less than 10 percent of the helium
concentration inside the shroud, the seal on the sampling point and sampling train will be
considered to be tight and not leaking. If a leak is noted, ECS will make adjustments and repeat
the testing process.
ECS will obtain either one -liter or similar Summa canisters from a commercial laboratory that
follows National Environmental Laboratory Accreditation Program (NELAC) standards and
participates in the National Environmental Laboratory Accreditation Program (NELAP). Each
canister will be pre -cleaned and pre -evacuated so that it is under negative pressure (i.e., under
vacuum). The canisters will be individually or batch certified by the laboratory. Each Summa
canister will be outfitted with a flow regulator set to 200 milliliters per minute and a vacuum gauge.
ECS will check and note the vacuum on each Summa canister before initiating the sampling
procedure. If the initial vacuum prior to sample collection is less than 10 percent of the vacuum
documented by the laboratory at shipment, the Summa canister will not be used. ECS will open
the valve on each Summa cannister to initiate sampling. Flow will be regulated at a rate of
approximately 200 mL/min. ECS will terminate the sampling procedure at each sampling point
while a vacuum of at least 5 inches of mercury is still present in the canister. ECS will note the
vacuum for each canister at the end of the sampling procedure.
The vacuum in the canister will be recorded before and after sample collection. Sample collection
will terminate when the vacuum reaches approximately 5 inches of mercury (in-Hg). Other
parameters that will be measured include ambient temperature before and after sample collection
and weather conditions at the time of sample collection.
The Summa canisters will be submitted to a NELAP certified laboratory for analyses of VOCs by
EPA Method TO-15. ECS will request that the laboratory analyze vapor samples for the most
current and applicable standards from NELAP. The laboratory will be instructed to use reporting
limits below the applicable NCDEQ screening levels to the extent technically feasible and to report
the vacuum measurement for each sample canister at receipt by the laboratory. Additionally, the
laboratory will report method detection limits and J-Flags in the laboratory analytical report.
One (1) duplicate soil gas samples, collected with a sample "T", will to be collected from the
approximate proposed soil gas sample location identified as SG-1. The sample, identified as
DUP-3, will be submitted for the same air analysis as the samples they are duplicating (See Table
1).
E:3
59 Depot Street Property - Brownfields Environmental Assessment Work Plan
Brownfields Project #26033-22-044
ECS Project No. 49-16550-B
3.4 Deviation from Approved Plan
This work plan is intended to be dynamic and to be adapted to specific and actual site conditions.
Accordingly, should such conditions warrant a change either by addition, deletion, or modification
of a procedure, such may be accomplished with agreement between a PHG Waynesville, LLC
representative and ECS after consultation with, and subject to approval by the Program. Such
changes will comply with applicable local, State, and Federal rules and regulations. A written
amendment shall be prepared and submitted to the BRS for approval (the use of e-mail
correspondence shall suffice for approval, followed by a hard copy or electronic copy provided on
Disk or similar media) prior to implementation. Amendments must have the approval of the BRS
prior to implementation.
4.0 LABORATORY ANALYSIS
4.1 Soil Analytical
Following sample collection, the sample containers will be labeled and maintained under chain -
of -custody until delivered to Pace a North Carolina certified laboratory located in Asheville, North
Carolina. Pace currently holds NC Lab Certification #40. A COC document will be utilized
throughout the collection and transportation of the samples. The soil quality samples collected from
the proposed boring locations will be analyzed for VOCs by EPA Method 8260 or SVOCs by EPA
Method 8270, RCRA 8-metals by EPA Methods 6020/7471 and hexavalent chromium by EPA
Method 7199 as indicated in Table 1.
One duplicate per day or per 20 soil samples collected will also be collected into laboratory
supplied/preserved containers. The duplicate(s) will be submitted for analysis of VOCs by EPA
Method 8260. Additionally, the duplicate(s)sample will be submitted for analysis of SVOCs by EPA
Method 8270, EPA Method 6020/7471 for RCRA 8-Metals, and Cr VI by EPA Method 7199.
The laboratory's Reporting Limits (RLs) and/or Method Detection Limits (MDLs) will be reported at
or below Residential and Industrial/Commercial Preliminary Soil Remediation Goals (PSRGs) (to the
extent feasible), and J-Flags (laboratory estimated concentrations) will be reported. A Level II
QA/QC package will be reported by the laboratory.
4.2 Groundwater Analytical
Following sample collection, the sample containers will be labeled and maintained under chain -
of -custody until delivered to Pace. The groundwater samples will be analyzed for VOCs using
EPA Method 8260, SVOCs using EPA Method 8270, and RCRA 8-metals by EPA Methods
6020/7470. The laboratory's RLs and/or MDLs will be reported at or below NC2LGWQS and the
Residential and Non -Residential Vapor Intrusion Screening Levels (VISLs) (to the extent
feasible), and J-Flags will be reported. A Level II QA/QC package will be reported by the
laboratory.
One duplicate groundwater sample and one equipment blank sample will also be collected into
laboratory supplied/preserved containers. These samples will be submitted for analysis of VOCs
by EPA Method 8260, SVOCs by EPA Method 8270, and RCRA 8-Metals by EPA Method
6020/7470.
4.3 Soil Gas Analytical
Individually certified 1-Liter Summa canisters utilized for soil gas sampling will be labeled and
shipped to Pace, to be analyzed for VOCs using EPA Method TO-15, including naphthalene. The
laboratory will be instructed to analyze the samples and report MDLs. The laboratory's MDLs will
be reported at or below the Residential and Non -Residential VISLs (to the extent feasible), and
J-Flags will be reported. A Level II QA/QC package will be reported by the laboratory.
9
59 Depot Street Property - Brownfields Environmental Assessment Work Plan
Brownfields Project #26033-22-044
ECS Project No. 49-16550-B
5.0 QUALITY ASSURANCE/QUALITY CONTROL
5.1 Soil Samples
The two duplicate (non -background) soil samples will also be collected into laboratory
supplied/preserved containers. One sample will be submitted for analysis of VOCs by EPA Method
8260. Additionally, one soil sample will be submitted for analysis of SVOCs by EPA Method 8270,
EPA Method 6020/7471 for RCRA 8-Metals, and hexavalent chromium by EPA Method 7199.
Following sample collection, the sample containers will be labeled, placed in a cooler with ice,
and delivered to Pace in Asheville, North Carolina. A COC document will be utilized throughout
the collection and transportation of the samples.
5.2 Groundwater Samples
One duplicate groundwater sample and one equipment blank sample will also be collected into
laboratory supplied/preserved containers. The sample will be submitted for analysis of VOCs by
EPA Method 8260, SVOCs by EPA Method 8270, and RCRA 8-Metals by EPA Method
6020/7470. One trip blank per cooler will also be analyzed for VOCs using EPA Method 8260.
Following sample collection, the sample containers will be labeled, placed in a cooler with ice,
and delivered to Pace in Asheville, North Carolina. A COC document will be utilized throughout
the collection and transportation of the samples.
5.3 Interior and Exterior Soil Gas Samples
Each Summa canister will be individually certified for the exterior soil gas samples.
One duplicate soil gas sample will be collected for laboratory analysis by EPA Method TO-15
utilizing a sampling "T. Following sample collection, the sample containers will be labeled, and
delivered to Pace in Asheville, North Carolina or applicable delivery company. A COC document
will be utilized throughout the collection and transportation of the samples.
6.0 INVESTIGATION DERIVED WASTE MANAGEMENT
The investigative derived waste (IDW) expected to be generated includes soil from the soil borings
and temporary monitoring well installations, and groundwater from the temporary well development
and groundwater sampling activities. Soil cuttings generated will either be placed back into the
various soil borings or spread onsite in the vicinity of the boring locations. Groundwater will be
containerized onsite pending receipt of laboratory analytical results and will be subsequently
managed in accordance with Section 8.5 Investigation -Derived Waste of the NCDEQ, Inactive
Hazardous Sites Program Guidelines for Assessment and Cleanup of Contaminated Sites (July
2021).
7.0 REPORTING
ECS will prepare a written report documenting the field activities, sampling procedures, laboratory
analytical results, conclusions, and recommendations for submission to the Program. The report
will include sample location figures, including a shallow groundwater surface map with graphic
scale and north arrow, soil and groundwater sample result summary tables, and copies of the
North Carolina certified laboratory analytical reports. Results will also be input into the Division of
Waste Management risk calculator and comparted to Residential and Non -Residential risk
10
59 Depot Street Property - Brownfields Environmental Assessment Work Plan
Brownfields Project #26033-22-044
ECS Project No. 49-16550-B
scenarios. Soil boring logs, monitoring well installation/abandonment records, and field screening
calibration documentation will also be included as additional information located in Appendices to
the report. The final report will include ECS' Licensed Geologist/Engineering Firm number and
bear the seal of the certifying North Carolina Licensed Geologist or Professional Engineer.
11
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RIDGEp \n 2810- q --
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PROJECT#: 49-16550-B
59 Depot Street Property
DRAWN BY:
TL
59 Depot Street
ASSIGN TO:
DM
Waynesville, Haywood County, NC 28786
PE:
JN
DATE: June 8, 2023
Figure
REVISED:
----
Site Topographic Location Map
1
SCALE: 1"=2000'
PRINTED: 6/8/20236:00 PM
C:\,nellrive- ECSCorporate Services\DWG\Projects\49\16550 Depot Street\B\49-16550-B Figures-Rl
1
Former American Cleaners 1
(REC) i
p0 - s
t Street
a
P
Aerial Photo Source: Google Earth April 2022
OSE
L�
ko
Scale
0 15 30
1 inch =30 ft.
PROJECT#: 49-16550-B 59 Depot Street Property
DRAWN BY: TL 59 Depot Street
ASSIGN TO: DM Waynesville, Haywood County, NC 28786
Ef%m PE: JN
DATE: June 8, 2023 CSite Location and
SCALE: 1"=30' Figure
REVISED: ----
Historical Sample Location Map
PRINTED: 6/8/20236:00 PM I C:\OneDrive- ECS Corporate Services\DWG\Projects\49\16550 Depot Street\B\49-16550-B Figures -RI
Oe00t Scree
t
WW
Source of Cut and Fill Plan: WSP USA Environment 5 Infrastructure Inc.; Dated March 23, 2022
LEGEND
O - Proposed Soil Sample
5' bgs - Proposed Depth
(below ground surface)
NOTE:
ECS Proposes 3 Cut Intervals in CELL 1
0-2' (Approx. 532 Cu. Yds.)
2'-4' (Approx. 532 Cu. Yds.)
4'-Termination (Approx. 345 Cu. Yds.)
Scale
0 15 30
1 inch =30 ft.
Erm
PROJECT#: 49-16550-B
59 Depot Street Property
59 Depot Street
Waynesville, Haywood County, NC 28786
DRAWN BY: TL
ASSIGN TO: DM
PE: JN
Proposed Soil Sample Location Map
Figure
3
DATE: June 8, 2023
REVISED: ----
SCALE: 1"=30'
PRINTED: 6/8/20236:00 PM
C:\OneDrive- ECS Corporate Services\DWG\Projects\49\16550 Depot Street\B\49-16550-B Figures-Rl
1.
LEGEND
■ - Proposed Soil Gas Sample
Proposed Monitoring Well
/- Groundwater Sample Location (April 11, 2022)
N / O - Soil and Soil Gas Sample Location (April 11, 2022)
35' bgs - Proposed Depth
(below ground surface)
r ti
o ,
1
M 6
35' bgs
SB 1/SG 1�.
/ 0S1371/,SG- .
r1 /Alk
15' bgs �45' bgs; �yiW-1/SB-5
- SG-6 r'
SB 2/SGz2-e gs
SG-8 J1
r► / 15' bgs
- SG- �� BMW-SNrW-2 W I
��L
i c i ,
' ' ,, 40' bgs
yo
SG-5 : " 0
a�
15' bgs (
1 /
416
I-
j
Scale
t
0 15 30
~ Source of Garage Level Plan: rba architecture interiors; dated August 30, 2022 '- � 1h =30 ft.
PROJECT #: 49-16550-B
59 Depot Street Property
DRAWN BY: TL 59 Depot Street
ASSIGN TO: DM Waynesville, Haywood County, NC 28786
PE: JN
DATE: June 8, 2023
Proposed Groundwater and Figure
REVISED: ----
Soil Gas Sample Location Map
SCALE: 1"=30' /�
PRINTED: 6/8/20236:OOPM C:\DneDrive-ECSCorporateServices\DWG\Projects\49\16550DepotStreet\B\49-16550-BFigures-Rl �}
TABLE
TABLE 1 - PROPOSED SAMPLE LOCATIONS & ANALYSIS
59 DEPOT STREET PROPERTY
BROWNFIELDS PROJECT ID.: 26033-22-044
ECS PROJECT NO. 49-16550-B
Sample Media
Laboratory Analysis & Analytical Method
Proposed Boring Depth
VOCS77 sVOCs RCRA Metals Cr VI
Composite Soil Samples
CELL 1 0-2
NA
8270E
6020C/7471
7199A
NA
CELL 2 24
NA
8270E
6020C/7471
7199A
NA
CELL 3 4-T
NA
8270E
6020C/7471
7199A
NA
Grab Soil Samples
B-1
8260D
NA
NA
NA
15 Feet
B-2
8260D
NA
NA
NA
7 Feet
B-3
8260D
NA
NA
NA
5 Feet
B-4
8260D
NA
NA
NA
8 Feet
B-5
8260D
NA
NA
NA
7 Feet
B-6
8260D
NA
NA
NA
4 Feet
B-7
8260D
NA
NA
NA
7 Feet
*Please note that two grab soil samples for VOC analysis will be collected from each boring.
Groundwater Samples
MW4
8260D
8270E
6020C/7471
NA
45 Feet
MW-5
8260D
8270E
6020C/7471
NA
40 Feet
MW-6
8260D
8270E
6020C/7471
NA
35 Feet
Soil Gas Samples
SG-5
TO-15
NA
NA
NA
15 Feet
SG-6
TO-15
NA
NA
NA
15 Feet
SG-7
TO-15
NA
NA
NA
15 Feet
SG-8
TO-15
NA
NA
NA
15 Feet
Quality Assurance Samples
DUP-1 soil
NA
8270E
6010C/7471
7199A
NA
DUP-2 soil
8260D
NA
NA
NA
NA
DUP-3(groundwater)
8260D
8270E
6020C/7471
NA
NA
DUP-4 soil as
TO-15
NA
NA
NA
NA
EQR (equipment rinse rondwater
8260D
8270E
6010C/7471
7199A
NA
TB(trip blankgroundwater)
8260D
NA
NA
NA
NA
Notes:
VOCs = Volatile Organic Compounds
SVOCs = Semi -Volatile Organic Compounds
RCRA = Resource Conservation & Recovery Act
Cr VI = Hexavalent Chromium
NA = Not Analyzed for the analysis
APPENDIX A
Historical Sample Location Figures and Laboratory Analytical Data Tables
SITE
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FIGURE 1
w SOURCE: SITE LOCATION MAP
USGS TOPOGRAPHIC MAP 59 DEPOT STEET ASSESM ENT SERVICIES
WAYNESVILLE, HAZELWOOD, CLYDE, AND 59 DEPOT STREET
DELLWOOD, NORTH CAROLINA QUADRANGLE WAYNESVILLE, HAYWOOD COUNTY,
DATED 2019 NORTH CAROLINA
Ai ECS PROJECT NO. 49:16550-A
SCALE: 1:24,000
rM
LEGEND 4�
® GROUNDWATER SAMPLE LOCATION
f
ASOIL AND SOIL GAS SAMPLE LOCATION t
• r
i
r ti
LL
/r., 6L..'
ZL'I
MW-3 SB-1 /SG-1
IPA- r -6 SB-4/SG-4
AK
SB-2/SG-2
J
r MW-1
ti
MW-2
� r
ALP r
FIGURE 2
SOURCE: SAMPLE LOCATION MAP
GOOGLE EARTH AERIAL IMAGERYE 59 DEPOT STEET ASSESMENT SERVICIES
YEAR : 2017 59 DEPOT STREET
WAYNESVILLE, HAYWOOD COUNTY,
APPROXIMATE SCALE: NORTH CAROLINA
= 60 feet TM ECS PROJECT NO. 49:16550-A
Table 1
Summary of PID Readings
59 Depot Street Environmental Assessment Services
59 Depot Street
Waynesville, Haywood County, North Carolina
ECS Project No.: 49:16550-A
Sample ID
Sample Depth
(ft bgs)
PID Reading (ppm)
S B-1
0.0-1.0
0.1
1.0-2.0
0.3
2.0-3.0
0.3
3.0-4.0
0.6
4.0-5.0
1.1
S B-2
0.0-1.0
0.0
1.0-2.0
0.1
2.0-3.0
0.7
3.0-4.0
0.2
4.0-5.0
0.9
S B-3
0.0-1.0
0.0
1.0-2.0
0.3
2.0-3.0
0.1
3.0-4.0
0.7
4.0-5.0
1.1
S B-4
0.0-1.0
1.3
1.0-2.0
7.1
2.0-3.0
7.4
3.0-4.0
12.1
4.0-5.0
9.8
SB-S
0.0-1.0
0.7
1.0-2.0
1.1
2.0-3.0
0.9
3.0-4.0
3.2
4.0-5.0
6.7
5.0-7.5
3.4
7.5-10
2.5
10-12.5
1.7
12.5-15
3.3
15-17.5
2.1
17.5-20
0.9
20.0-22.5
0.8
22.5-25.0
1.2
Notes
PID = photoionization detector
ppm = parts per million
ft bgs = feet below the ground surface
Bold intervals were selected for analysis
Table 2
Summary of Soil Analytical Results
59 Depot Street Environmental Assessment Services
59 Depot Street
Waynesville, Haywood County, North Carolina
ECS Project No.: 49:16550-A
SVOCs by EPA
VOCs by EPA Method 8260
Method 8270
U
O
>
Sample ID
Sample Depth
Sample Date
i
°��'
N
o
v
v
c
o
ago
cn
2
N
(6
0
U
a
C
N
SB-1
4' to 5'
04/11/22
<0.0064
0.0083
0.24
BRL
BRL
S13-2
4' to 5'
0.013
<0.010
<0.0023
BRL
BRL
SB-3
4' to 5'
<0.0052
<0.0028
<0.0026
BRL
BRL
S13-4
3' to 4'
<0.010
<0.010
<0.0017
BRL
BRL
SB-5
4' to 5'
<0.0038
<0.0021
<0.0019
BRL
BRL
Protection of Groundwater PSRGs
0.39
8.3
0.0063
--
--
Residential PSRGs
2.1
990
17
--
--
Industrial/Commercial PRSGs
8.8
9,700
82
--
--
Notes:
Results presented in milligrams per kilograms (mg/kg)
Targeted Compounds not shown were not detected above laboratory reporting limits
PSRGs = Preliminary Soil Remediation Goals - North Carolina Department of Environmental Quality, June 2021
VOCs = Volatile Organic Compounds
SVOCs = Semi -Volatile Organic Compounds
Bold = Concentration exceeds Protection of Groundwater PSRG
Table 3
Summary of Groundwater Analytical Results
59 Depot Street Environmental Assessment Services
59 Depot Street
Waynesville, Haywood County, North Carolina
ECS Project No.: 49:16550-A
SVOCs by EPA
VOCs
by EPA
Method 8260
Method 8270
U
v
Sample ID
Sample Date
o
`o
v
U
o
0
0
"�
V)
CU
u
t
cn
C
N
u
E
ca
N
~
E:
c�
v
MW-1
04/11/22
1.2
6.0
<1.0
BMDL
BMDL
MW-2
980
2030
146
BMDL
BMDL
MW-3
42.0
62.4
3.7
BMDL
BMDL
NC2LGWQS
70
0.7
3
Various
Residential Groundwater VISL
NS
12
1
Various
Non -Residential Groundwater VISL
NS
48
4.4
Various
Notes:
Results presented in micrograms per liter (ug/L)
BMDL = Below Method Detection Limit
Targeted Compounds not shown were not detected above laboratory method detection limits
VOCs = Volatile Organic Compounds
SVOCs = Semi -Volatile Organic Compounds
NC2LGWQS = North Carolina 2L Groundwater Quality Standards
Residential Groundwater VISL = NCDEQ Residential Groundwater Vapor Intrusion Screening Level (January 2022)
Non -Residential Groundwater VISL = NCDEQ Non -Residential Groundwater Vapor Intrusion Screening Level (January 2022)
Bold = Concentration exceeeds NC2LGWQS
Light Shaded Cell = Concentration Exceeds Residential Groundwater VISL
Dark Shaded Cell = Concentration Exceeds both Residential and Non -Residential Groundwater VISLs
NS = No Standard
TABLE 4
SUMMARY OF LEAK TESTING RESULTS
59 Depot Street Environmental Assessment Services
59 Depot Street
Waynesville, Haywood County, North Carolina
ECS Project No.: 49:16550-A
Sample ID
Helium
Concentration
in Shroud (%)
Helium
Concentration
in Shroud (ppm)
Helium Readings from Sample
Train (ppm)
1
2
3
SG-1
3.5%
35,000
0
0
0
SG-2
3.0%
30,000
0
0
0
SG-3
3.6%
36,000
25
25
25
SG-4
4.5%
45,000
0
0
0
Notes:
ppm = parts per million
Tabla 5
Summary of Soil Gas Analytical Results
59 Depot Street Environmental Assessment Services
59 Depot Street
Waynesville, Haywood County, North Carolina
ECS Project No.: 49:16550-A
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