21004_Taylor Salt_Work Plan Package_20180713

K,-r-,p.
Waste Managemer r
ENV,PONHENTAL QUALITY
July 13, 2017
Sent Via E-mail
J. Duncan Browder
J-J-C Real Estate Investments, LLC
2100 Scotland Ridge Road
Charlotte, NC 28211
[e-mail]
Subject: Work Plan Approval
Taylor Salt & Chemical, Former
3915 Glenwood Drive
Charlotte, Mecklenburg County
Brownfields Project Number 21004-17-060
Dear Mr. Browder:
ROY COOPER
Cc ,r„or
MICHAEL S. RE AM
Scn-Fcrury
MICHAEL SCOTT
f*rztor
The North Carolina Department of Environmental Quality (DEQ) Brownfields Program received
and reviewed the Brownfields Assessment Work Plan dated March 9, 2018, and provided
comments on March 27, 2018. We have received and reviewed the revised work plan dated July
11, 2018. Based on our review, the Brownfields Assessment Work Plan dated July 11, 2018 is
approved.
Be advised that this approval from the Brownfields Program 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. If
you have any questions, please feel free to contact me at 704-235-2166, or via e-mail at
jordan.tho![e-mail].
Sincerely,
Jordan Thompson
Brownfields Project Manager
ec: Chris Corbitt, Terracon
Chris Walker, K&L Gates
Tracy Wahl, DEQ
State of North Carolina I Environmental Quality I Waste Management
1646 Mail Service Center 1217 West Jones Street I Raleigh, NC 27699-1646
919 707 8200 T

K,-r-,p.
Waste Managemenr
ENV,PONHENTAL QUALITY
October 3, 2017
Sent Via Email
J. Duncan Browder
J-J-C Real Estate Investments, LLC
2100 Scotland Ridge Road
Charlotte, NC 28211
[e-mail]
Subject: Additional Assessment
Taylor Salt & Chemical, Former
3915 Glenwood Drive
Charlotte, Mecklenburg County
Brownfields Project Number 21004-17-060
Dear Mr. Browder:
ROY COOPER
cor
MICHAEL S. RECAN
5cn-Fcrury
MICHAEL SCOTT
fwraor
The North Carolina Department of Environmental Quality (DEQ), Brownfields Program has
reviewed the documents submitted with the Brownfields Property Application, as well as files
available through the DEQ Underground Storage Tanks (UST) program, Inactive Hazardous Sites
Branch (IHSB), and Dry Cleaning Solvent Cleanup Act (DSCA) Program for the former Taylor
Salt and Chemical property located at 3915 Glenwood Avenue in Charlotte, Mecklenburg County.
The following is a summary of the reports reviewed:
Report Title
Prepared by
Date of Report
Remedial Action Progress Report
AECOM
July 17, 2017
Phase I ESA
Terracon Consultants, Inc.
December 7, 2016
Remedial Action Progress Report
AECOM
August 19, 2016
Annual Groundwater Sampling and Status
Bascor Environmental, Inc.
February 8, 2008
Report
Annual Groundwater Sampling and Status
Bascor Environmental, Inc.
May 16, 2007
Report
Semi -Annual Groundwater Sampling and
Bascor Environmental, Inc.
September 15, 2005
Status Report
Multiple Plume Investigation Report
Bascor Environmental, Inc.
December 10, 2004
Semi -Annual Groundwater Sampling and
Bascor Environmental, Inc.
August 3, 2004
Status Report
Annual Groundwater Sampling and Status
Bascor Environmental, Inc.
March 15, 2004
Report
Annual Groundwater Sampling and Status
Bascor Environmental, Inc.
March 12, 2003
Report
State of North Carolina I Environmental Quality I Waste Management
1646 Mail Service Center 1217 West Jones Street I Raleigh, NC 27699-1646
919 707 8200 T

Mr. J. Duncan Browder
October 3, 2017
Page 2
Semi -Annual Groundwater Sampling and
Bascor Environmental, Inc.
August 15, 2002
Status Report
UST Closure Report
Advent Environmental, Inc.
January 1999
UST Closure Report
Advent Environmental, Inc.
February 12, 1999
Summary of Environmental Assessment and
Advent Environmental, Inc.
March 27, 1998
Site Assessment Work Plan
UST Closure Assessment
Petroleum Environmental
February 21, 1995
Consultants, Inc.
DEQ also conducted a reconnaissance of the Brownfields Property on July 251h with Mr. Duncan
Browder and Mr. Chris Walker. Based on our review of these documents, data gaps were
identified. Additional assessment activities, as outlined below, are required to assist in making
risk management decisions for inclusion in the Brownfields Agreement (BFA). The following
areas of the site will require additional assessment. Prior to conducting field activities, a work
plan should be submitted to DEQ for review and approval. The work plan should include a
description of the sampling and analytical methods to be utilized and a map depicting the proposed
sample locations. The most recent Inactive Hazardous Sites Program Guidelines for Assessment
and Cleanup (http://portal.ncdenr.org/web/wm/sf/ihs/ihs _. itg ide) should be followed. Request
Level 2 QA/QC data packages from a N.C. certified environmental laboratory. Collect one
duplicate sample per media per method per 10% of samples, and a trip blank for groundwater for
all analysis.
1) Soil Sampling: Install two soil borings to a minimum depth of 5 feet below ground surface
adjacent to the north -central portion of the main building near the reported release of "salt and
other chemicals" on February 2, 1977 along the railroad line. Collect a sample at the 2-ft
interval with the greatest evidence of impacts for analysis of volatile organic compounds
(VOCs) by EPA Method 8260, semi-VOCs (SVOCs) by EPA Method 8270, and resource
conservation and recovery act (RCRA) Metals by EPA Method 6020. Collect a surficial
background metal sample from an undisturbed portion of the Site for comparison of metal
impacts.
2) Sub-Slab/Soil-Gas Sampling: Based on the most recent groundwater sampling event reported
to DEQ, groundwater impacts of VOCs on the property have potentially created a vapor
intrusion concern and sub -slab samples have not been collected beneath the Site buildings.
Collect a minimum of seven sub -slab soil -gas samples beneath the Site buildings and analyze
the samples for VOCs by EPA Method TO-15. Include a helium leak check prior to sampling
and ensure that laboratory method detection limits are below applicable standards.
3) Groundwater Sampling: Sample the following existing monitoring wells on the Brownfields
Property: MW-2, MW-21), MW-4A, MW-4I, MW-8I, MW-10A, MW-12R, MW-15.
Monitoring wells should be sampled for VOCs by EPA Method 8260, SVOCs by EPA Method
8270, and RCRA Metals by EPA Method 6020.

Mr. J. Duncan Browder
October 3, 2017
Page 3
4) Indoor Air Sampling: Based on historical groundwater and soil -gas samples collected on the
Brownfields Property, it is anticipated that the abovementioned sub -slab soil -gas and
groundwater sampling events will identify the potential for vapor intrusion within the buildings
on the Brownfields Property. Following sub -slab soil -gas and groundwater sampling, if a
vapor intrusion concern is identified, collect at least six indoor air samples for analysis of those
constituents detected in groundwater and indoor air via EPA Method TO-15. Vapor sampling
methods consistent with Division of Waste Management Vapor Intrusion Guidance should be
used.
5) Receptor Survey: Complete the enclosed Brownfields Property receptor survey and include as
an attachment to the Additional Assessment Report.
Note that based on discussions during the July 25, 2017 meeting, the PD indicated that there is no
current plan to disturb soils beneath parking lots or building slabs on the Brownfields Property.
However, if future redevelopment were to occur, additional soil sampling may be required prior
to any activities.
Report and Figures: Upon receipt of analytical data, submit a summary report with a description
of field activities, tabulated data in comparison to applicable screening levels, and the laboratory
data packet with applicable QA/QC documentation. Provide a site plan with monitoring well
locations, locations of sample points, and current site structures. Provide concentration map(s) for
contaminants detected above applicable standards. Include a detailed description of current
operations since the Brownfields Property application was submitted. Please note, all sample
points may need to be included on the future Brownfields plat. DEQ recommends having sample
locations surveyed at the time of collection for use in preparation of the Brownfields plat.
Please provide the Work Plan for additional assessment activities as soon as you are able. If you
have questions about this correspondence or require additional information, please feel free to
contact me by phone at 704-235-2166 or by email at jordan.thompsonkncdenr.gov.
Sincerely,
Q
Jordan Thompson
Brownfields Project Manager
cc: Chris Walker, K&L Gates
Tracy Wahl, DEQ

BROWNFIELDS ASSESSMENT
WORK PLAN
Taylor Salt and Chemical Brownfields Site
NCBP #21004-17-060
3915 Glenwood Drive
Charlotte, Mecklenburg County, North Carolina
July 11, 2018
Terracon Project No. 71177602
Prepared for:
J-J-C Real Estate Investments, LLC
Charlotte, North Carolina
Prepared by:
Terracon Consultants, Inc.
Charlotte, North Carolina

July 11, 2018
Ms. Jordan Thompson
Division of Waste Management — Brownfields Program
NC Department of Environmental Quality
1646 Mail Service Center
Raleigh, NC 27699-1646
P: [phone]
E: iordan.thompson aanc
Re: Brownfields Assessment Work Plan
Taylor Salt and Chemical Brownfields Site
3915 Glenwood Drive
Charlotte, Mecklenburg County, North Carolina
NCBP #21004-17-060
Terracon Project No. 71177602
Dear Ms. Thompson:
Ireffacon
On behalf of J-J-C Real Estate Investments, LLC (PD), Terracon Consultants, Inc. (Terracon) is
pleased to submit this Brownfields Assessment Work Plan for the above referenced site.
Terracon has prepared this work plan based on the NC Brownfields Program's Additional
Assessment letter dated October 3, 2017 and discussions with the NC Brownfields Program on
February 22, 2018. The work plan includes a discussion of site history, past environmental
investigations, data gaps, and proposed assessment activities to address the data gaps. The
work plan has been revised to reflect your March 27, 2018 comments on the original work plan.
The PD is seeking your approval of the proposed work so that a Brownfields Agreement can be
obtained for this site.
Terracon appreciates the opportunity to present this work plan to the NC Brownfields Program.
Should you have any questions or require additional information, please do not hesitate to
contact our office.
Sincerely,
Terracon Consultants, Inc.
Haley . Hindes, P.G.
Staff Geologist
Christopher L. Corbitt, P.G.
Senior Geologist
Cc: Mr. Duncan Browder— J-J-C Real Estate Investments, LLC (PD)
Mr. Chris Walker — K&L Gates
Terracon Consultants, Inc. 2701 Westport Road Charlotte, NC 28208
P [phone] F [phone] terracon.com

TABLE OF CONTENTS Irerracon
1.0 SITE DESCRIPTION.......................................................................................................1
1.1
GENERAL SITE DESCRIPTION..........................................................................1
1.2
SITE HISTORY....................................................................................................1
1.3
OFF -SITE ENVIRONMENTAL CONCERNS........................................................3
2.0 PROPOSED ADDITIONAL ASSESSMENT....................................................................3
2.1
SOIL....................................................................................................................3
2.2
GROUNDWATER................................................................................................4
2.3
INDOOR AIR SAMPLING....................................................................................5
2.4
QUALITY ASSURANCE / QUALITY CONTROL..................................................6
2.5
BROWNFIELDS RECEPTOR SURVEY..............................................................6
3.0 BROWNFIELDS ASSESSMENT REPORT.....................................................................7
Figures
Figure 1 — Site Location
Figure 2 — Former On -Site Storage Areas
Figure 3 — Site Diagram and Proposed Sample Locations

Irerracon
BROWNFIELDS ASSESSMENT WORK PLAN
TAYLOR SALT AND CHEMICAL BORWNFIELDS SITE
3915 GLENWOOD DRIVE
CHARLOTTE, NORTH CAROLINA
Terracon Project No. 71177602
July 11, 2018
1.0 SITE DESCRIPTION
1.1 GENERAL SITE DESCRIPTION
The Taylor Salt and Chemical Brownfields project site is located at 3915 Glenwood Drive in
Charlotte, North Carolina. The site consists of an approximate 3.75-acre parcel improved with
several adjoining commercial/industrial warehouse buildings, totaling 51,615 square feet.
Currently, the buildings are occupied by multiple tenants. Exterior portions of the site consist
mostly of asphalt -paved vehicle access and parking areas with limited landscaped areas. The
property is identified in Mecklenburg County tax records as Parcel No. 06506147. The site was
accepted into the North Carolina Brownfields Program in May 2017 with J-J-C Real Estate
Investments, LLC identified as the prospective developer (PD). The site location is shown on
Figure 1.
Surrounding land use consists of industrial/commercial properties to the north and northeast. A
daycare center is located directly south of the site. Single-family residences are located to the
west of the site and the eastern adjoining property is currently undeveloped. The site is
relatively level but the topographic gradient slopes slightly downward to the southeast towards a
tributary of Stewart Creek. Groundwater at the site is between 10 and 25 feet below ground
surface (bgs) based on historical reports.
1.2 SITE HISTORY
Terracon performed a review of multiple historical documents available for the site and
surrounding properties, including a 2016 Phase I Environmental Site Assessment (ESA),
groundwater monitoring reports, site assessment reports, and a plume investigation report for
the site. The site history is summarized below.
Reportedly, the site was occupied by Taylor Salt from at least 1960 until 1978. Taylor Salt
distributed and repackaged salts, acids, solvents, and caustics. Bulk amounts of ammonia,
acetic acid, sulfuric acid, caustic soda, isopropanol, mineral spirits, methyl ethyl ketone, and
methanol were stored on the site as a part of on -site operations. A railroad spur located along
the northern property boundary was used as a receiving area for raw bulk materials. According
to the historical documents, in 1977, there was a reported release of "salt and other chemicals"
Responsive ■ Resourceful ■ Reliable

Brownfields Assessment Work Plan Irerracon
Taylor Salt and Chemical Brownfields Site Charlotte, NC
July 10, 2018 Terracon Project No. 71177602
along the railway spur. Multiple aboveground storage tanks (ASTs) were located in the northern
portion of the site near the railroad spur. Bulk products were drummed in the covered area
located south of the AST storage area. In 1987, Taylor Salt reported a release to groundwater to
the NC Department of Environmental Quality (NCDEQ) Division of Water Resources (DWR).
The NCDEQ DWR identified the release as Incident No. 3203. Historical locations of on -site
operations are depicted on Figure 2.
In 1995, a 10,000-gallon diesel UST was removed from the south-central portion of the site near
the flammables storage building (Figure 2). Approximately 450 tons of petroleum impacted soil
were removed from the tank basin. The NCDEQ identified the release as Incident No. 13641.
Confirmation samples collected from the tank basin after over -excavation did not identify
residual contaminants of concern (COCs). In March 1995, the NCDEQ issued a No Further
Action (NFA) letter for the release. A new 10,000-gallon diesel UST was installed in the tank
basin in 1995, but was removed in 1998. In August 1997, eight additional soil samples and four
groundwater samples were collected in the vicinity of the diesel UST. Analytical results identified
petroleum constituents above their respective standards in the soil and groundwater samples.
During the removal of the second 10,000-gallon UST, petroleum impacted soils were identified
and approximately 130 cubic yards of impacted soil were removed from the site. The NCDEQ
identified the new release as Incident No. 19511. Currently, Incident No. 19511 remains an
open Leaking Underground Storage Tank (LUST) incident.
According to a March 1998 Summary of Environmental Site Assessment Report by Advent, nine
soil samples, nine groundwater samples, and 33 soil gas samples were collected on the site to
determine the magnitude of the on -site contamination. Multiple soil samples indicated residual
petroleum contamination was located near the former diesel UST in the southern portion of the
site. Several of the groundwater samples contained multiple volatile organic compound (VOC)
constituents above their respective 2L Groundwater Quality Standards. Benzene, 1,1-
dichloroethene, trichloroethene (TCE), toluene, total xylenes, and tetrachloroethene (PCE) were
detected in various soil gas samples.
Annual groundwater monitoring events have been conducted on the site since at least 1998.
Chlorinated constituents detected in the on -site wells have been above 2L standards during
each of the monitoring events. It is Terracon's understanding that Univar USA, Inc. has been
conducting voluntary remedial actions at the site to address the chlorinated compounds. In
December 2004, a soil vapor extraction pilot test was completed on the site and, in 2009,
Bascor Environmental, Inc. installed a permanent soil vapor extraction system on the site as a
part of on -going remediation activities. A total of nine permanent soil gas points were installed
on the site in 2008 and 2013. Soil gas results from a sampling event conducted in September
2014 identified PCE above the Residential or Non -Residential Soil Gas Screening Level (SGSL)
in multiple locations. In November 2014, AECOM collected 15 indoor air samples within the on -
site buildings. PCE was detected in nine of the 15 samples, but the concentrations were an
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Brownfields Assessment Work Plan Irerracon
Taylor Salt and Chemical Brownfields Site Charlotte, NC
July 10, 2018 Terracon Project No. 71177602
order of magnitude below the Residential Indoor Air Screening Level. Other VOCs were not
detected above the laboratory's method detection limit.
1.3 OFF -SITE ENVIRONMENTAL CONCERNS
The former Boggs and Company facility is located directly north and up -gradient of the site. The
former Boggs facility operated as a dry cleaning chemical company from at least 1941 until the
1990s. In 1972 and 1984, an unknown amount of PCE was released from an aboveground
storage tank (AST) on the Boggs facility. Based on a 2017 Preliminary Fate and Transport
Model Memorandum completed by AECOM, the extent of the contamination has been traced
from the Boggs facility onto the project site and on other adjoining properties to the southwest.
The site is included in the NC Dry -Cleaning Solvent Cleanup Act (DSCA) Program and is
identified as DSCA ID No. 60-0010.
2.0 PROPOSED ADDITIONAL ASSESSMENT
It is Terracon's understanding that the primary concern of the NC Brownfields Program is how
human health could be affected during and after redevelopment activities. In order to assess
health -based risks, Terracon proposes the collection of soil, groundwater, and indoor air
samples on the site. Proposed sample locations are based primarily on areas of potential
concern due to site history, potential data gaps, and discussions with the NC Brownfields
Program. The most recent IHSB Program Guidelines for Assessment and Cleanup will be used
for additional assessment activities. The rationale for selecting specific sample
intervals/locations is discussed for the different sample media below.
2.1 SOIL
Soil conditions have already been assessed for the most of the site as documented by
assessment activities conducted in 1995, 1998, 1999, 2004, 2015, and 2016. The Brownfields
Program requested two additional shallow soil samples along the railroad spur to assess the
release of salts and other chemicals that reportedly occurred in 1977 along the railroad spur.
Proposed soil boring locations (HA-01 and HA-02) are shown on Figure 3.
The two soil borings will be advanced to a minimum depth of 5 feet using a hand auger. Soil
type, relative moisture content, and other lithologic characteristics will be documented in the
field. Terracon will screen the soils at 2-foot intervals in the field using a photo -ionization
detector (PID) that detects vapors from volatile organic compounds (VOCs). A soil sample will
be collected from the interval with the greatest evidence of potential impact for analysis.
The Brownfields Program also requested the collection of a background metals sample from an
undisturbed portion of the site for comparison of impacts by metals. The background soil boring
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Brownfields Assessment Work Plan
Taylor Salt and Chemical Brownfields Site Charlotte, NC
July 10, 2018 Terracon Project No. 71177602
will be advanced in the southeastern portion of the site (see Figure 3) using a hand auger. The
background sample will be collected from a depth of 0-2 feet.
The soil samples will be placed in laboratory -prepared glass containers, labeled with pertinent
sample information and stored in an ice -packed cooler pending submittal to a North Carolina
certified laboratory for analysis of volatile organic compounds (VOCs) by EPA Method 8260,
semi -volatile organic compounds (SVOCs) by EPA Method 8270 and the eight RCRA metals by
EPA Method 6020 in accordance with requirements by the North Carolina Brownfields Program.
The background soil sample will be analyzed for the eight RCRA metals by EPA Method 6020.
Chain of custody documentation will accompany the samples to the laboratory.
Prior to soil sampling activities, Terracon will contact NC -One Call, a public utility locating
company, to locate on -site underground utilities.
Soil sample results will be compared to the IHSB's Preliminary Soil Remediation Goals
(PSRGs) for unrestricted use and industrial/commercial use. Additionally, constituent
concentrations in the soils will be evaluated using the NC Brownfields Program's Soil Risk
Calculator under a residential and non-residential exposure scenario.
2.2 GROUNDWATER
Annual groundwater sampling events are currently conducted by AECOM Technical Service of
North Carolina, Inc. (AECOM) on behalf of Univar USA, Inc. In October 2016, twenty six (26)
monitoring wells were sampled as part of their annual groundwater monitoring activities.
Given the significant groundwater sampling that has occurred at and near the site, Terracon
proposes to sample monitoring wells MW-4A, MW-10A, and MW-15 to evaluate additional
constituents that were not addressed by recent groundwater monitoring activities. Historically,
well MW-4A has been the most impacted well on the site. Well MW-10A is located in the former
UST basin where LUST incident No. 19511 occurred. MW-15 is located in the east -central
portion of the site. Monitoring well locations are shown on Figure 3.
At the three well locations, depth to groundwater measurements will be obtained using an
electronic water level meter. If depth to groundwater conditions allow, a peristaltic pump will be
used for sample collection. Groundwater sampling will be conducted using low -flow techniques.
While purging the wells, Terracon will monitor temperature, dissolved oxygen (DO), oxidation-
reduction potential (ORP), specific conductance, and turbidity to ensure the samples will be
collected during stable groundwater conditions. Terracon will collect a groundwater sample once
the geochemical parameters have stabilized (parameter measurements display a variance of
less than 10% and turbidity is below 10 NTUs). The samples will be submitted for laboratory
analysis of volatile organic compounds (VOCs) by EPA Method 8260, semi -volatile organic
compounds (SVOCs) by EPA Method 8270, and RCRA metals by EPA Method 6020.
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Brownfields Assessment Work Plan Irerracon
Taylor Salt and Chemical Brownfields Site Charlotte, NC
July 10, 2018 Terracon Project No. 71177602
Groundwater samples will be collected and placed in laboratory provided containers, labeled,
and placed on ice in a cooler which will be secured with a custody seal. The samples and
completed chain -of -custody forms will be transported to Pace Analytical in Huntersville, NC, a
North Carolina certified analytical laboratory on a standard analytical schedule. One trip blank
(VOCs only) will be submitted for the three groundwater samples as discussed in Section 2.4.
Groundwater sample results will be compared to the NCAC Subchapter 2L Groundwater Quality
Standards. Additionally, constituent concentrations in groundwater will be evaluated using the
IHSB's Residential Groundwater Screening Levels for Vapor Intrusion and the NC Brownfields
Program's Vapor Intrusion Risk Calculator under a Residential and Non -Residential exposure
scenario.
2.3 INDOOR AIR SAMPLING
Multiple soil gas studies have been completed on the site to assess the potential vapor intrusion
concerns and subsurface impacts related to historical site activities and the up -gradient
properties. Although the on -site buildings are constructed as slab -on -grade, the slab is too thick
to conduct sub -slab soil vapor sampling. The thick slab also appears to be serving as an
effective vapor barrier, and penetrations into the slab could create pathways to indoor air.
Therefore, Terracon proposes collecting indoor air (IA) samples and one outdoor air sample to
supplement and confirm the results of the IA samples collected in November 2014. Figure 3
shows the proposed sample locations. Terracon evaluated each portion of the building with
respect to the historical, current and future use of the space and proposes collection of the
following six air samples:
IA-01 in the office building;
IA-02 and IA-03 in the former oxidizer and corrosive chemical storage warehouse;
IA-04 in the former chemical storage building (Unit G or E of the on -site building);
IA-05 in the former flammables storage building; and
OA-01 outdoors near the fence along the eastern property boundary.
Sampling Methodology
Technical approaches and methods outlined in this soil vapor investigation proposal are in
general accordance with NCDEQ vapor intrusion guidance.
The indoor and outdoor air samples will be collected using stainless steel laboratory supplied 6
liter Summa canisters through a flow controller set for 8 hours. The samples will be collected at
approximately 5 feet above grade. As part of the sampling protocol, a copy of NCDEQ's Indoor
Air Building Survey (Appendix B of NCDEQ's Vapor Intrusion Guidance) will be completed.
Prior to and after the indoor and outside air samples are collected, the vacuum pressure in the
canisters will be measured using a laboratory -supplied vacuum gauge and recorded by
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Brownfields Assessment Work Plan
Taylor Salt and Chemical Brownfields Site Charlotte, NC
July 10, 2018 Terracon Project No. 71177602
sampling personnel. The vacuum readings from each canister will be recorded on the sample
chain -of -custody. Technical approaches and methods outlined above are in general accordance
with the Interstate Technical and Regulatory Council's Vapor Intrusion: A Practical Guideline
(2007) and DWMs Vapor Intrusion Guidance (March 2018).
Following completion of the field activities, the Summa canisters (7 canisters/samples including
one duplicate sample), along with chain -of -custody documentation, will be shipped to Contest
Analytical Laboratory in East Longmeadow, Massachusetts for laboratory analysis of volatile
organic compounds (VOCs) by EPA Method TO-15. A level 2 QA/QC data package will be
requested for the air samples as outlined in Section 2.4.
Indoor and outdoor air sample results will be compared to the IHSB's Residential and Non -
Residential Indoor Air Screening Levels. Additionally, constituent concentrations in indoor air will
be evaluated using the NC Brownfields Program's Vapor Intrusion Risk Calculator under a
Residential and Non -Residential exposure scenario.
2.4 QUALITY ASSURANCE / QUALITY CONTROL
Blind duplicate samples will be collected as part of this investigation for Quality Assurance /
Quality Control (QA/QC) purposes. Specifically, one duplicate sample will be collected per
sample media (soil, groundwater, and indoor air), for a total of three duplicate samples. The soil
and groundwater duplicate samples will be submitted for laboratory analysis of VOCs by EPA
Method 8260, SVOCs by EPA Method 8270, and RCRA metals by EPA Method 6020. The
indoor air duplicate sample will be submitted to the analytical laboratory for analysis of VOCs by
EPA Method TO-15.
In addition to the duplicate samples, one trip blank will be submitted with the groundwater
samples. The trip blank will be analyzed for VOCs via EPA Method 8260. A level 2 QA/QC data
package will be requested from the analytical laboratories for soil, groundwater, and air
samples. Terracon will also request "J-Flag" values to be included in the laboratory analytical
reports.
2.5 BROWNFIELDS RECEPTOR SURVEY
A Brownfields Receptor Survey will be completed as part of the additional assessment for the
site. The "Brownfields Property Receptor Survey" form will be used to conduct the field and
office -based portions of the receptor survey. The completed form and a summary of findings will
be included in the Brownfields Assessment Report.
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Brownfields Assessment Work Plan Irerracon
Taylor Salt and Chemical Brownfields Site Charlotte, NC
July 10, 2018 _ Terracon Project No. 71177602
3.0 BROWNFIELDS ASSESSMENT REPORT
Upon completion of the above assessment activities and receipt of the laboratory analytical
results, a Brownfields Assessment Report will be prepared that will include the following items:
Documentation of field activities;
Site plan showing pertinent site features;
Soil boring logs and groundwater and air sampling logs;
Estimation of groundwater flow direction based on field measurements;
Receptor survey form and results;
Analytical laboratory results;
Data evaluation and presentation of findings including comparison of data to applicable
regulatory standards; and
Recommendations concerning further assessment, if necessary
The report will be completed in a format suitable for submittal to the North Carolina Brownfields
Program. Work associated with this scope of services will be performed under the direction of a
Licensed Geologist registered in the State of North Carolina.
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TOPOGRAPHIC MAP IMAGE COURTESY OF THE U.S. GEOLOGICAL SURVEY
QUADRANGLES INCLUDE: MOUNTAIN ISLAND LAKE, NC (1/1/1997), DERITA, NC (1/1/1993), CHARLOTTE WEST, NC (1/1/1993) and CHARLOTTE EAST, NC (1/1/1988).
Project Manager: Project No. CLC 71177602 Site Location FIGURE
Drawn by: HEH Scale: 1"=2,000' Irerracon
Taylor Salt &Chemical Brownfields Site
Checked by: CLC FileN��fi�7602.1 2701 Westport Rd (NCBP # 21004-17-060)
Approved by: Date: Charlotte, NC 28208-3608 3915 Glenwood Drive
cLc July 2018 Charlotte Mecklenburg County, NC

Path: C:\GIS\Univar\Charlotte Glenwood Drive \5 Data\GIS\Ma Documents\2017\2016 Annual Report Fi ures\F4 Soil Sample Locations.mxd Date Saved: 6/15/2017 4,42:26 PM
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SUNSHINE DAYCARE
3801 GLENWOOD DR.
SCALE FEET
Former On -Site Storage Areas
LEGEND
0 100
Figure 2
TRACKS
FORMER UNIVAR USA, INC.
PROPERTY BOUNDARY
(2014 MECKLENGBURG COUNTY,
3915 GLENWOOD DRIVE
NC GIS)
CHARLOTTE, NC

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LEGEND:
denotes approximate site boundary
approximate location of groundwater
monitoring well '
0 Proposed soil sample location
0 Proposed indoor air location
Proposed outdoor air location
Reported release of "salt and other
chemicals" in 1977
Project Manager:
Project No.
CLC
71177602
Site Diagram and Proposed Sample Locations
Figure
Drawn by: HEH
Scale: N.T.S.
Irerracon
Taylor Salt & Chemical Brownfields Site
Checked by:
CLC
File Name:
71177602
2701 Westport Road
P
(NCBP # 21004-17-060 �
3
Approved by:
Date:
Charlotte, NC
3915 Glenwood Drive
CLC
July 2018
Charlotte, Mecklenburg County, NC