21045 Woodfin Auto BAR Workplan 2018.06.22

tINGLETON ENVIRONMENTAL, INC.
June 22, 2018
Ms. Caroline Goodwin
North Carolina Department of Environmental Quality
Division of Waste Management — Brownfields Program
1646 Mail Service Center
Raleigh, North Carolina 27699-1646
Re: Brownfields Additional Assessment Work Plan
Woodfin Auto & Salvage
1420 & 1430 Riverside Drive
Asheville, North Carolina
Brownfields Project No. 21045-17-011
SEI Project No. SEI-884
Ms. Goodwin:
1.0 Introduction
Singleton Environmental, Inc. (SEI) has prepared this Work Plan to conduct Brownfields
assessment activities on the Woodfin Auto & Salvage property located at 1420 and 1430 Riverside
Drive in Asheville, Buncombe County, North Carolina (Site). The subject Site consists of two
contiguous commercial parcels comprising approximately 3.23 acres. A Site location map is
provided as Figure 1.
Currently, there is a mobile home that was the former operations office, scales, a partially
demolished block structure (former office) remaining on the Site with the automotive debris.
Most of the ground cover at the Site is gravel, mulch, dirt or concrete. An aerial Site Map is
included as Figure 2.
2.0 Background
Historically, the Site was pasture land until the mid- 1950s when it became the Farmer's Federation
Feed & Seed Co-op. In the mid-1960s the Site became an auto crusher/junkyard with concrete fill
material from off -site demolition sites added to increase the ground elevation. Recently, the Site
has been cleared of most autos, however, some automotive debris remains on the Site.

SINGLETON ENVIRONMENTAL, INC.
2.1 Areas of Potential Concern
In June and July 2017, SEI completed a L i m i t e d Phase II Environmental Site Assessment
(ESA) at the Site to determine if there was soil and groundwater contamination was present.
In February 2018, SEI completed a Phase I ESA and a Receptor Survey for the Site. Potential
environmental concerns identified in connection with the Site during Phase I & II ESA activities
are summarized below:
• Since the mid-1960s, the Site has been used as an auto junkyard/auto crusher (1420
Riverside Drive) or an auto repair facility (1430 Riverside Drive). According to aerial
photographs, it appears the crusher was moved to different locations at the Site during the
40+ years it was in operation. Stained soils from the past use were observed during the site
visits and the Phase II ESA activities. Additional soil and groundwater analysis will need
to be performed in these areas to further assess the Site.
• Railroad tracks are located along the northern boundary of the Site. Although the area
surrounding the tracks appear to be in good condition, soil testing will need to be performed
to rule out contamination in this area.
• The Site has been elevated over the years with fill material from local demolition sites.
Most of the fill material appears to be concrete and rock debris, however, the areas with the
fill material need further assessment to determine if other items have been buried at the Site.
The Site received eligibility into the DEQ Brownfields Program via a Letter of Eligibility dated
October 4, 2018. On May 11, 2018, SEI attended a meeting with DEQ Brownfields personnel
to discuss Site history, areas of potential environmental concern, proposed redevelopment plans for
the Site, potential data gaps, and the scope of Brownfields assessment activities needed to address
the data gaps. Based on conversations during the May 11, 2018 meeting, SEI proposes to conduct
soil and groundwater assessment activities to evaluate the subsurface conditions for potential
impacts in areas of concern identified during Phase I & II ESA activities. Brownfields
assessment activities are outlined in the following sections.

SINGLETON ENVIRONMENTAL, INC.
3.1 Brownfields Assessment Activities
SEI proposes to conduct soil and groundwater assessment activities at the Site to evaluate the
potential for impacts associated with historical Site uses and to assist in development of an
Environmental Management Plan for use during planned redevelopment of the Site. The proposed
assessment activities will be performed in general accordance with DEQ's Inactive Hazardous
Sites Branch (IHSB) Guidelines for Assessment and Cleanup (Guidelines) dated October 2015
and most recent versions of the U.S. Environmental Protection Agency (EPA) Region IV
Science and Ecosystem Support (SESD) Field Branches Quality System and Technical
Procedures guidance.
Prior to conducting field activities, SEI will contact North Carolina 811 One -Call, the public
utility locator service, to mark subsurface utilities at the Site.
3.2 Receptor Survey
In February 2018, SEI completed a Brownfields Property Receptor Survey. Per DEQ Brownfields
request, the Brownfields Property Receptor Survey is provided in Appendix A. The receptor
survey includes information about current land use at the Site area including zoning. SEI conducted
a field search for water supply wells, basements, utility manways and chases, storm sewers, other
underground utilities, drains, and surface water within a 1500 feet radius of the Brownfield
property boundaries. The Receptor Survey identified the on -site buried utilities and the French
Broad River as the closest receptors.
3.3 Soil Assessment Activities
SEI proposes to conduct soil assessment activities at the Site to further evaluate current
subsurface conditions for potential impacts and to further evaluate soils that will be removed and
used for fill material in other areas of the Site during initial grading activities. SEI will either
perform or team with a qualified drilling contractor to advance fourteen soil borings to depths
of approximately 4 ft/bgs to 20 ft/bgs (or refusal). Proposed soil sample locations (denoted by
SS nomenclature) are depicted on the sample location map, which is presented as Figure 2,
and will be advanced in the following areas:

SINGLETON ENVIRONMENTAL, INC.
• SS-1, SS-2 and SS-9 will be advanced to a depth of approximately 4 ft/bgs.
• SS-3, SS-4, SS-8, and SS-10 will be advanced to a depth of approximately 2 ft/bgs.
• SS-5, SS-6, SS-7, SS-11 and SS-12 will be advanced to a depth of approximately 1 ft/bgs.
• SS-13 and SS-14 will be advanced to groundwater approximately 20 ft/bgs.
• SS-15 will be will be collected at a depth of 0 to 0.5 ft/bgs.
The soil borings will be advanced utilizing direct push technology (DPT) drill rig. Continuous
soil samples will be collected from the borings using acetate lined macrocore sleeves. Soil
samples will be logged for lithological description and field screened for indication of potential
impacts by observation for staining, and the presence of organic vapors using a calibrated
photoionization detector (PID). Based upon field screening results, one soil sample with the
highest PID results will be submitted for analysis.
Following collection, the soil samples will be placed in dedicated laboratory -supplied sample
containers, labeled with the sample identification, date, and requested analysis, and placed in a
laboratory supplied cooler with ice. Soil samples will be submitted to Pace Analytical, a North
Carolina certified laboratory, under standard chain of custody protocols 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 plus hexavalent chromium
by EPA Methods 6020/7471 /7196.
3.4 Groundwater Assessment Activities
SEI will utilize a drilling contractor to provide DPT drill rig to advance borings for installation
of two temporary groundwater monitoring wells. If refusal is encountered prior to reaching the
water table in a proposed temporary groundwater monitoring well location, SEI will instruct the
driller to use air rotary to advance the boring to depths corresponding to the water table. The
approximate locations of the proposed temporary monitoring wells (denoted by TMW-2 and
TWM-3) are shown on the sample location map, which is presented as Figure 3, and are described
below:
• The SS-13 soil boring will be advanced to groundwater and will become TMW-2.
0 The SS-14 soil boring will be advanced to groundwater and will become TMW-3.

SINGLETON ENVIRONMENTAL, INC.
During drilling, soil samples will be collected and logged for lithologic description and field
screened for presence of staining and elevated concentrations of volatile organic vapors using a
PID. The temporary monitoring wells will be constructed of 1-inch diameter PVC with 10 ft of
pre -pack well screen set to bracket the water table and 1-inch diameter PVC well casing to the
ground surface. A sand filter pack will extend from below the base to approximately 2 ft above
the top of the pre -packed well screens. The temporary wells will be completed by placing a
hydrated bentonite seal from the top of the sand filter pack to the ground surface. Once the
temporary monitoring wells are installed, the wells will be allowed to equilibrate to static conditions
and a decontaminated electronic water level indicator will be used to measure the depth to the
water table relative to the ground surface.
The wells will then be developed by removing a minimum of 3 to 5 well volumes and observing
stable field parameters (i.e. pH f 0.1 SU and conductivity varies no more than 5%). After
development, a groundwater sample will be collected utilizing low flow/low stress purging
techniques using a peristaltic pump and dedicated polyethylene tubing. The intake point of the
pump tubing will be placed approximately in the mid -portion of the screened interval of the well
and groundwater will be removed at a rate no greater than 200 milliliters per minute. SEI will
utilize a water quality meter to measure pH, temperature, dissolved oxygen, oxidation reduction
potential, turbidity, and specific conductivity at 3 to 5 minute intervals during purging. Purging
will be considered complete when water quality parameters stabilize (i.e. pH ± 0.1 SU,
conductivity varies no more than 5%, and turbidity is less than 10 NTUs).
Once groundwater parameters stabilize, groundwater samples will be collected directly into
laboratory supplied sample containers using the "soda straw" method to minimize volatile loss
through the peristaltic pump head. The sample containers will be labeled with the sample
identification, date, and requested analysis, and placed in a laboratory supplied cooler and iced.
The sample will be delivered to a North Carolina certified laboratory under standard chain of
custody protocols for analysis of VOCs by EPA Method 8260, SVOCs by EPA Method 8270
and RCRA metals by EPA Methods 6010/7471.
Upon completion of soil and groundwater sampling activities, soil borings and temporary
monitoring wells will be properly abandoned by a licensed well driller and surfaces will be
repaired to generally match pre -drilling conditions. Soil and groundwater sample locations will be

SINGLETON ENVIRONMENTAL, INC.
recorded in the field using a hand-held global positioning system (GPS) unit.
3.5 Quality Assurance/Quality Control
Laboratory quality assurance/quality control (QA/QC) procedures will be employed to ensure
appropriate sample handling and analysis and to aid in the review and validation of the analytical
data. QA/QC procedures will be conducted in accordance with EPA method protocols and will
include regular equipment maintenance, equipment calibrations, and adherence to specific sample
custody and data management procedures. In accordance with approved methodologies, samples
will be analyzed in conjunction with appropriate blanks, laboratory duplicates, continuing
calibration standards, and surrogate standards to monitor both instrument and analyst performance.
SEI will request that the laboratory reporting limits for each analyte will be at or below appropriate
screening criteria. Additionally, SEI will request that the laboratory include J Flags, which are
estimated concentrations for compounds that are detected at levels above the laboratory method
detection limit, but below the laboratory reporting limit.
The following activities will be conducted by SEI for QA/QC purposes:
• non -dedicated equipment and tools will be decontaminated prior to use at each boring or
sampling location, or following exposure to soil or groundwater.
• one duplicate soil sample will be analyzed for VOCs by EPA Method 8260, SVOCs by
EPA Method 8270, RCRA metals plus hexavalent chromium by EPA Methods
6020/7471 /7196.
• one duplicate groundwater sample will be analyzed for VOCs by EPA Method 8260,
SVOCs by EPA Method 8270, and RCRA metals by EPA Methods 6010/7471.
• one trip blank will accompany samples during sampling activities and shipment. The trip
blank will be analyzed for VOCs by EPA Method 8260.
A copy of the laboratory analytical data report and QA package for each group of samples
submitted to and analyzed by the subcontracted laboratory will be provided in an appendix to the
final report. Laboratory QA data consistent with Level II documentation will be requested for
this project. A copy of the completed chain -of -custody record and shipping receipt will be
appended to the corresponding laboratory analytical report included with the final report.

SINGLETON ENVIRONMENTAL, INC.
3.6 Investigation Derived Waste
Investigation derived waste (IDW) generated during the assessment activities will be
containerized or will be placed on, and covered with a minimum of 10-mil plastic and staged in a
secure on -Site location. The IDW will remain on -Site pending laboratory analytical results. Based
on laboratory analytical results, the IDW will be managed in accordance with the DEQ IHSB
Guidelines and the North Carolina Administrative Code (NCAC) Title 15A Subchapter 2T
rules dated January 1, 2009.
4.0 Reporting
Following completion of the assessment activities and receipt of the analytical data, SEI will
document our findings in a Brownfields Assessment Report. The report will include a description
of the sampling activities, a figure depicting sample locations, soil boring logs, temporary
monitoring well construction details, a groundwater p o t e n t i o m e t r i c map, laboratory
analytical data, a discussion of the data in comparison to regulatory screening levels, Brownfields
Receptor Survey results, a photographic log of the Site and assessment activities, and conclusions
and recommendations concerning our activities.
Please contact me if you have any questions or require additional information.
Sincerely,
Chris Si'`
Singleton ental, Inc.
Attachments

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SOIL SAMPLE LOCATIONS a SHRUB
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DRAWN BY: C. Singleton
FIGURE 2
CHECKED BY: C. SINGLETON
Woodfin Auto & Salvage
R-=--L-TON ENVIRONMENTAL, INC Woodfin, NC

North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Program
BROWNFIELDS PROPERTY RECEPTOR SURVEY
This form was created to clarify and simplify preparing a receptor survey for a brownfield site. Please provide the
information requested below. Distances are measured from the site property boundary unless otherwise indicated
by the DEQ Brownfield's Project Manager (PM).
Site: Woodfin Auto & Salvage, Inc.
Address: 1420 & 1430 Riverside Drive
City:
County:
Woodfin
Buncombe
Brownfields Project Number:
21045-17-011
Property and Building Characteristics
Surface Conditions
Current Usage
Proposed Usage
Size of Property (acres)
3.23
% of property that is wooded/brush
-30
Charter School
% of property that is grassed areas
-70
Charter School
% of property that is agricultural crops
0
Charter School
% of property that is paved
0
Charter School
% of property that is covered by buildings
0.64
Charter School
If an existing building is on -site, please respond to the following. Information can be provided on additional sheets
as needed. If numerous buildings are on -site, consult with your PM as only information on specific buildings may
be needed.
a. Provide occupancy and use information.
Currently Vacant - See Attached drawing for planned future use.
b. Describe the construction of the builidng including materials (e.g. wood frame, block), type and size of openings
(e.g. windows, bay doors), and height (number of stories).
One 900 sq-ft mobile home - Constructed of wood and alluminum siding.
One 900 sq-ft partially demolished block structure without a roof.
c. Describe the foundation construction. Include details on type, floor construction, and depth below grade.
Mobile home has a block foundation.
Block building has poured footers with a partial poured floor.
Rev. 09/2015 Page 1 of 4

North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Program
d. Describe the HVAC system in the building. Include available details on type, equipment location, source of air
return, and design considerations (e.g. positive pressure?).
None observed.
e. Are any subslab ventilation systems or moisture barriers in place? If so, please provide details.
No
Surrounding Property Land Use
Please provide information on the following land uses in the vicinity of the subject site, including a map of the
surrounding areas. If specific receptors are present, please provide addresses of the facilities.
Zoning/Land Use
Current Use/Occupant
Proposed Usage
North
JR Stone Sales - Stone Sales
Same
South
Julian Smith - Storage, State of NC - Storage Building
Same
East
Mark Delk - Rental Storage, Shaun Freese - Residential
Same
West
French Broad River
Same
Specific Land Uses of Interest
YIN
ta
Distance
Direction
Address
Is a school or daycare center within 1,000 ft of the
N
Is there a residence within 1,000 ft of the Property?
Y
250
East
1421 Riverside Dr
Is there a basement within 1,000 ft of the Property
N
* If numerous facilities of interest are present, their locations can be placed on a map in lieu of providing specific
addresses.
Utilities
For the subject property, please provide a map of known buried utilites. If available, include depth to top,
construction material, and diameter of the utilities. In addition, please provide the following information on utilty
providers. If additional assessment is required, the public utility locators should be contacted. This information
can then be added to a site map.
Is there a septic system on -site? (Y or N) N
Please provide the utility providers for the subject property
a. Natural Gas _ PSNC
Rev. 09/2015 Page 2 of 4

North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Program
b. Sewer MSD
c. Electricity _ Duke Power
d. Other Town of Woodfin - Water
For surrounding properties, please complete the following table with available information.
Utility/Potential Receptor
N
Y/
Distance
Distance
Direction
Is a storm water pipe within 100 ft of the Property boundary?
Y
15
NE
Is a sanitary sewer within 100 ft of the Property boundary?
Y
0
on Prop
Is a septic system leach field within 500 ft of the Property boundary?
N
Is a water line main within 100 ft of Property boundary?
Y
15
NE
Is a natural gas line main within 100 ft of the Property boundary?
Y
40
NE
Is a buried telephone/ cable main within 100 ft of the Property boundary?
N
Is a buried electrical cable main within 100 ft of Property boundary?
N
* If yes, please provide a map or detailed information (distance, direction, depth) of the utility in correlation with
the subject property.
Water Supply
The purpose of this section is to provide information on the water supply for the site and surrounding areas.
What is the potable water supply for the property? Public _X Private
If Private, please provide details of the water supply source (i.e. well location, well construction, etc). If public,
please include the water providers name.
Please provide the following information regarding water supply wells in the vicinity of the Property. At a
minimum, a windshield survey within 1,500 ft of the property boundaries should be completed to determine if
water supply or irrigation wells may be present. Information from applicable databases can and should be
utilized; however, should not be utilized in lieu of the windshield survey. If multiple wells are present within the
requested radius, please provide a map of the well locations. If needed, please attach a separate table to list all
wells. Please note, the PM may opt for a more extensive water supply well survey if needed.
Water Supply Wells
YIN
DistanceP
Direction
Address
Is a public water supply well within 1 mile of the Property boundary?
N
Is a private water supply well within 1,500 ft of the Property
N
Is an irrigation well within 1,500 ft of the Property boundary?
jN
Rev. 09/2015 Page 3 of 4

North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Program
Surface Water & Wetlands
The purpose of this section is to provide information on the presence of surface waters and/or wetlands on, or in
the vicinity of the Property.
Provide Information regarding Surface Water
Response/Comments
and Wetlands
Are there surface water features on the
property? (If yes, please complete a. to d.)
No
a. Is the water body naturally developed or
man-made?
b. List the uses of the water body.
c. What is the source of the water for the
water body?
d. What is the nature of the bottom of the
water body (e.g., rocky or concrete bottom,
drainage ways or impoundments)
If no on -site surface water features, what is the
nearest surface water body?
French Broad River -West, Seasonal Creek -South.
Are there any wetlands present on the
property? If no wetlands on -site, are wetlands
No, None observed.
suspected on adjoining properties?
Rev. 09/2015 Page 4 of 4

LEGEND:
SOIL SAMPLE LOCATIONS Q SHRUB
S WATER WELL
TREE
SCALE (feet)
0 100 200
UST SYSTEM
(Tank Pit, Product Lines, etc.)
NORTH
DRAWN BY: C. Singleton
CHECKED BY: C. SINGLETON
(SINGLETON ENVIRONMENTAL, INC 11420&1430
FIGURE 1
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