20006_Southern Wiper_WP SG& Approval letter 2022.01.13

January 13, 2022

Sent Via E-Mail
Patrick W. Lowery, PG
Summit Engineering
3575 Centre Circle Drive Fort Mill, SC 29715 [e-mail]

Subject: Work Plan Approval
Southern Wipers Brownfields Site Charlotte, Mecklenburg County Brownfields Project No. 20006-16-060
Dear Mr. Lowry,
The Department of Environmental Quality (DEQ) Brownfields Program received your Soil Vapor Assessment Work Plan Revision 1 dated December 29, 2021 for the above referenced Brownfields Property. DEQ Brownfields comments to previous revision dated November 11, 2021 of this Work Plan have been addressed; therefore, the Work Plan is approved.
Please be advised that this approval from DEQ Brownfields does not waive any applicable requirement to obtain any necessary permits, licenses or certifications which may be required from other state or local entities. If you have questions about this correspondence or require additional
information, please feel free to contact me by phone at 704/661-0330 or by email at
[e-mail]

Sincerely,
Carolyn Mininch Brownfields Project Manager ec: Marissa Markham [e-mail]
Franchina, David A. [e-mail]

SOIL VAPOR ASSESSMENT WORK PLAN
Revision No: 1
Southern Wipers
Charlotte, Mecklenburg County, North Carolina
Brownfields Project Number: 20006-16-060
SUMMIT Project Number: 3586.E0014

Prepared For:
NC Department of Environmental Quality
Brownfields Program
610 E. Center Avenue
Mooresville, NC 28115
Att: Carolyn Minnich
Proffit Dixon Partners, LLC
1420 East 7th Street
Suite 150
Charlotte, NC 28204
Att: Marissa Markham

Prepared By:
SUMMIT ENGINEERING, LABORATORY & TESTING, Inc.
3575 Centre Circle
Fort Mill, South Carolina 29715

Patrick W. Lowery, P.G.
Senior Environmental Manager
[e-mail]

Michael Zavislak, P.E.
Environmental Department Manager
[e-mail]

NC Engineering Firm License No. C-2530

December 29, 2021

SUMMIT Engineering, Laboratory & Testing, Inc.
3575 Centre Circle
Fort Mill, South Carolina 29715
www.SUMMIT-companies.com
Phone: [phone]
Fax: [phone]

December 29, 2021
Revision No: 1

Ms. Carolyn Minnich
North Carolina Department of Environmental Quality
DWM - Brownfields
610 East Center Avenue, Suite 301
Mooresville, NC 28115

Subject: Soil Vapor Assessment Work Plan
Southern Wipers
511 E 25th Street, 2200, 2214 & 2218 North Brevard Street
Charlotte, Mecklenburg County, North Carolina
SUMMIT Project No. 3586.E0014
Brownfields Project Number 20006-16-060
Dear Ms. Minnich:

SUMMIT ENGINEERING, LABRATORY & TESTING, INC. (SUMMIT) is pleased to submit the following
Soil Vapor Work Plan. This work plan is provided to outline assessment methodology to characterize
current site conditions. If you have any questions regarding our work plan, please do not hesitate to
call us at [phone].
Sincerely,
SUMMIT

Patrick W. Lowery, LG Michael D. Zavislak, NRCC-EAC, CIH, PE
Senior Environmental Manager Environmental Department Manager

Soil Vapor Assessment Work Plan SUMMIT Project No. 3586.E0014 Charlotte, Mecklenburg County, North Carolina November 11, 2021

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TABLE OF CONTENTS
1.0 INTRODUCTION ......................................................................................................................... 1
1.1. PURPOSE............................................................................................................................................. 1
1.2. SITE DESCRIPTION .............................................................................................................................. 1
1.3. ASSESSMENT HISTORY ....................................................................................................................... 1
1.4. CURRENT DEVELOPMENT STATUS ..................................................................................................... 2
1.5. REDEVELOPMENT PLANS ................................................................................................................... 3
2.0 SCOPE OF WORK ....................................................................................................................... 4
2.1. SOIL VAPOR/METHANE ASSESSMENT ............................................................................................... 4
3.0 SAMPLING METHODOLOGY ...................................................................................................... 5
3.1. SOIL GAS ASSESSMENT METHODOLOGY ........................................................................................... 5
3.2. METHANE ASSESSMENT METHODOLOGY ......................................................................................... 7
3.3. REQUIRED PPE .................................................................................................................................... 8
4.0 LABORATORY ANALYSIS ............................................................................................................. 9
5.0 QA/QC ..................................................................................................................................... 10
6.0 INVESTIGATION DERIVED WASTE (IDW) MANAGMENT ......................................................... 11
7.0 REPORTING .............................................................................................................................. 12

TABLES
Table 1: Property Summary Table
Table 2: Sample Summary Table
Table 3: Historical Groundwater Detection Summary Tables
Table 4: Historical Soil Detection Summary Tables

FIGURES
Figure 1: Site Location Map
Figure 2A: Proposed Development Plan – Southern Wipers Parcel
Figure 2B: Aerial with Development Overlay – Southern Wipers Parcel
Figure 2C: Proposed Development Plan – N. Brevard Street Parcels
Figure 2D: Aerial with Development Overlay – N. Brevard Street Parcels
Figure 3A: Assessment Sampling Plan – Current Site Layout
Figure 3B: Assessment Plan with Development Overlay –Southern Wipers Parcel
Figure 3C: Assessment Plan with Development Overlay –N. Brevard Street Parcels
Figure 4A: TCE in Groundwater Map
Figure 4B: Other Exceedances in Groundwater

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1.0 INTRODUCTION

1.1. PURPOSE

SUMMIT ELT, Inc. (SUMMIT) is pleased to submit this proposed work plan for providing a Soil
Vapor Assessment associated with the development of the Southern Wipers Brownfields
Property, located at 511 E 25th Street, 2200, 2214 and 2218 N Brevard Street, in Charlotte, North
Carolina. This assessment work plan is intended assesses soil vapor at the subject property, ot
previously included in conducted Brownfields Assessments.

1.2. SITE DESCRIPTION

The Brownfields Project area consists of an irregular shaped tract of commercial/industrial and
vacant land comprised of four (4) tax parcels totaling 5.279-acres in area. The Brownfields property
is developed with two (2) industrial warehouse type buildings located along N. Brevard Street and
two (2) industrial warehouse buildings located between E. 25th Street and E. 26th Street, east of Little
Sugar Creek. Vacant undeveloped parcels make up the remaining portions of the site. For the
purpose of this work plan, the three (3) parcels located along N. Brevard Street (Mecklenburg
Parcels: 08305302, 08305305 and 08305306) will be referred to as the N. Brevard Street Parcels. For
the purpose of this work plan, the parcel located east of Little Sugar Creek (Mecklenburg
Parcel:08305308), will be referred to as the Southern Wipers Parcel. Additional, parcels located
along Little Sugar Creek (Mecklenburg Parcels: 08305307 & 08305312) are currently in negotiations
for land acquisition.

1.3. ASSESSMENT HISTORY

Phase I ESAs have been performed by SUMMIT ELT, Inc for the Southern Wipers parcel located on
the N. Davidson Street side of the Brownfields property as well as the N. Brevard Street Parcels. On-
site and off-site RECs were identified to be associated with the subject parcels historical site usage
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and surrounding site industrial history. Known chlorinated and metal impacts with groundwater
were identified to have impacted the upgradient off-site properties adjacent to the Southern Wipers
Parcel.

A Brownfields Assessment was completed for the Southern Wipers Parcel, (511 E 25th Street) in
2018. Results confirm chlorinated VOCs and metals impacts (Arsenic, Hex Chromium) at this portion
of the Brownfields property. Additionally, metal impacts were identified in soil samples collected
from the Southern Wipers Parcel.

An Additional Assessment was completed for the N. Brevard Street Parcels, (2200, 2214 & 2218
North Brevard Street) in 2021. Results confirm PAHs and chlorinated VOCs impacts in the
groundwater at this portion of the Brownfields property. Soil results confirm PAHs, Naphthalene and
hexavalent chromium impacts at this portion of the Brownfield property. The additional assessment
included re-sampling of existing wells at the Southern Wipers Parcel which documented chlorinated
VOCs and metals impacts (Arsenic, Hex Chromium) at that portion of the Brownfields property
Additionally, metal impacts were identified in soil samples collected from the Southern Wipers
Parcel.

No assessment has been completed for the N. Brevard Street Parcels of the Brownfields property.

1.4. CURRENT DEVELOPMENT STATUS

The subject site parcels were previously developed for industrial use with four (4) industrial
warehouse type structures. Two (2) located at 511 E. 25th Street, formerly utilized by Southern
Wipers, is currently being utilized as tenant lease space to include auto repair and storage.

The two (2) industrial warehouse structures at 2214 and 2218 N Brevard Street are being utilized
as commercial office space and storage.
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1.5. REDEVELOPMENT PLANS

The subject site is planned for mixed use redevelopment for commercial and residential purposes.
Existing structures are planned for demolition and the proposed redevelopment would include 3 to
8-story multi-family apartments on the Southern Wipers Parcel of the property and 5 to 7-story
commercial/residential mixed use on the N. Brevard Street Parcels of the property. While specific
construction details for the proposed new structures are unknown at this time, the structures would
include slab on grade commercial/residential space and the use of vertical conveyances (elevators).
Parking deck structures will be associated with both eastern and western redevelopments. Attached
Figures 2A, 2B, 2C and 2D provide an overview of the proposed redevelopments.

The proposed redevelopment plans have been evaluated by NC DEQ Brownfields. The purpose of
this work plan is to evaluate design criteria for vapor mitigation measures to be proposed as part of
the future Environmental Management Plan (EMP).
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2.0 SCOPE OF WORK

SUMMIT will contact North Carolina 811 in an effort to locate all underground utilities prior to
starting the proposed field activities. We cannot however be responsible for damage to any
underground feature that is not clearly marked in the field. SUMMIT requests the owner provide all
underground utility and structure information to us prior to our field investigation.

2.1. SOIL VAPOR/METHANE ASSESSMENT

SUMMIT proposes to install a total of nine (9) permanent soil vapor implants within the proposed
development footprints. Five (5) implants are planned for the Southern Wipers portion of the
redevelopment which is planned for multi-family residential development with a proposed footprint
of 34,000 SF. Four (4) implants are planned for the N. Brevard Street Parcels portion of the
redevelopment which is planned for mixed used commercial/residential development with a
estimated footprint of 65,000 SF. For this soil vapor assessment, seven (7) soil vapor implants will
be installed as Sub-Slab sampling points in existing building slab foundations while two (2) soil vapor
sampling locations will be installed utilizing direct push borings to a depth of 5 feet below ground
surface (bgs). The soil gas implants will be completed with permanent flush mount surface
protection to allow for multiple sampling events if required prior to demolition of the structures.
Sub-slab sampling locations will be countersunk in the concrete slab with a flush mount protective
cover. Vapor-pen or equivalent sample point construction will be utilized. All sampling implants are
planned to be utilized for the collection of soil gas samples and for screening of Methane as
described in section 3.3 of this work plan. Soil Gas will be analyzed for the presence of VOCs by EPA
Method TO-15. Methane will be screened in accordance with NC DEQ Brownfields Methane
Assessment Protocol (sept-2020). Soil Vapor Implant locations are provided on the attached
sampling plans, Figures 1, 2A and 2B of this work plan.

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3.0 SAMPLING METHODOLOGY

The purpose of the proposed assessment activities is to obtain environmental data related to the
current site conditions at the subject site. The work plan was developed following SUMMITs
experience with working on similar projects and is intended to be utilized to assist in the formation
of a DEQ Brownfield Agreement. All field sampling activities and reporting will be completed in
general accordance with the DEQ IHSB Guidelines for Assessment and Cleanup of Contaminated
Sites (Guidelines) dated January 2020, this DEQ-approved Work Plan, and the most recent versions
of the U.S. Environmental Protection Agency (EPA) Region IV Science and Ecosystem Support Division
(SESD) Field Branches Quality System and Technical Procedures guidance. Work associated with the
work plan will be performed under the direction of a Licensed Geologist registered in the State of
North Carolina.

3.1. SOIL GAS ASSESSMENT METHODOLOGY

SUMMIT proposes to install a total of seven (7) permanent sub-slab soil vapor implants and two (2)
permanent soil gas implants for this assessment. The soil gas and sub-slab locations were chosen
based on preliminary development plans. At each sub-slab implant location, a 1-inch diameter bit
and rotary hammer will be used to complete a core hole through the existing slab foundations. Each
core hole will be cleaned with a bottle brush and shop vacuum prior to construction of sub-slab gas
implants. Sub-slab gas implants will be constructed by Total Vapor Solutions, LLC and consist of
Swagelok fittings and ¼’ nylaflow tubbing and stainless-steel implant at sub-slab elevation encased
in filter sand. Hydrated bentonite will be extended up the core hole and assembly to 6” from the
surface. High strength concrete will be placed in the upper 6 inches of the core hole. Each sub-slab
sampling implant will be installed in accordance with Division of Waste Management Vapor Intrusion
Guidance (VIG) and Inactive Hazardous Site Branch (IHSB) guidance. Sub-slab gas monitoring points
will be allowed to equilibrate for a minimum of 48-hours prior to sample collection.
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For the two (2) permanent soil gas implants, Direct Push (DP) equipment will advance a 2.25-inch
diameter borehole utilizing a MacroCore soil core assembly. At installation depths of 5 feet bgs, the
rod string will be retracted and 6 inches of uniform filter sand will be placed at the base of the
borehole. A stainless-steel soil gas sampling implant will be placed above the base filter sand and
connected to the surface by ¼-inch Nylaflow tubing. The soil gas sampling implant will be encased
in filter sand to a depth extending 6 inches above the top of the implant. Hydrated bentonite seal
will be placed above the filter sand and extend up to 1 ft from the ground surface of each borehole.
Each soil gas implant will be finished at the surface with a 4-inch manhole surface protection and
secured in place via 6-inch diameter concrete pad. The soil gas sampling implant shall be installed
in accordance with Division of Waste Management Vapor Intrusion Guidance (VIG) and Inactive
Hazardous Site Branch (IHSB) guidance. Soil gas monitoring points installed by direct push methods
will be allowed to equilibrate for a minimum of 48-hours prior to sample collection.

During the construction of the sub-slab and soil gas implants, SUMMIT personnel will record
construction records to include concrete slab thickness, sub-slab materials type (soil, gravel, etc) and
soil boring records for soil gas implants.

Prior to sampling, a helium leak test and equipment shut-in test will be conducted in accordance
with DMW guidelines. The helium leak tests consist of sealing a shroud over the soil gas point and
sampling train and filling the head space with helium gas. Helium readings inside the shroud will be
recorded via a calibrated hand-held helium detector. Sampling point volume will be calculated
(annular space, tubing, etc.) and a minimum of three (3) volumes will be removed from the sampling
point at no more than 200-ml per minute. Following purging, a fourth volume will be collected in a
new tedlar bag. The resulting tedlar bag will be analyzed for the presence of helium gas utilizing the
hand-held helium detector. The sampling points will pass the leak tests and be considered properly
sealed if the sample points helium concentrations are less than 10% of the helium concentration
within the leak test shroud.

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Samples will be collected in laboratory batch certified 400ml Summa Canisters and maximum 200-
ml per minute calibrated regulator. Sample canister regulators will be monitored during the
sampling period and the sampling period will be stopped at five (5) psi to ensure negative pressures
remain for shipment to the laboratory. Samples will be submitted to a nationally accredited
laboratory for analysis TO-15 to include Naphthalene. Sampling for Mercury Vapor is not planned at
this time as historical sampling data indicates no detection of Mercury in groundwater and only low
concentration background levels of Mercury in soils. One (1) duplicate is planned for this sampling
event. Pressure readings will be recorded for each sampling point prior to and following sampling
activities and will be recorded on Chain of Custody Records. Atmospheric pressure readings will be
recorded as well.

Soil Gas Implant locations will be recorded utilizing a hand-held GPS unit.

3.2. METHANE ASSESSMENT METHODOLOGY

SUMMIT proposes conduct a Methane Assessment in accordance with NC DEQ Brownfields Program
Methane Assessment Protocol (Sept. 2020), Initial Shallow Soil Gas Test. The methane assessment
will be conducted utilizing the nine (9) Soil Vapor Implants detailed in section 3.1 of this work plan.
In addition to the construction details provided in section 3.1, each soil gas implant will include an
air tight valve at the sample connection for pressure measurement screening purposes. The valves
will remain closed prior to connection of measuring instrumentation. An 8-hour equilibrium period
will be required for each sampling point following installation. The Methane Assessment shall be
conducted 8-hours following soil gas sample collection utilizing a LandGEM 5000 Landfill Gas Meter
to record Static and Differential Pressure readings (in H2O), CH4 (%bv, %LEL, and ppm), O2, CO2 and
H2S. The Assessment sequence for Shallow Soil Gas Test outlined in the September 2020 Methane
guidance will be followed at each sampling location. A second methane test shall be conducted 24-
hours (minimum) following the initial landfill gas measurement. Tests shall be performed at different
times of the day (AM vs. PM).
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Field notes, instrument logs, and digital date/time stamp of pressure readings compared to methane
readings will need to be provided in the final report. Barometric Pressure and weather conditions
will be recorded by use of a handheld weather meter. The stabilized/peak concentrations of
methane for each sampling location will be included in the final report.

3.3. REQUIRED PPE

Activity Level PPE
Soil Vapor Implant Installation D
Soil Gas Sampling D

A minimum of Level D Personal Protective Equipment is required for all personnel on-site during soil
gas implant installation and sampling activities. Care should be taken to limit any contact with
exposed soils, groundwater or unknown materials if encountered.

All drilling equipment shall be decontaminated following drilling activities by the contractor by use
of a steam cleaner or Alconox and tap water wash, tap water rinse, isopropanol rinse (sampling
equipment), and deionized water rinse.

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4.0 LABORATORY ANALYSIS

Soil Vapor Samples will be submitted to H&P Mobile Geochemistry Inc., a nationally accredited
laboratory for VOC analysis by EPA Method TO-15 to include Naphthalene. Sampling for Mercury
Vapor is not planned at this time as historical sampling data indicates no detection of Mercury in
groundwater and only low concentration background levels of Mercury in soils.

Laboratory Reporting Limits (RLs) and method detection limits (MDLs) will be sufficient to report
concentrations below regulatory standards. “J” values will be reported when concentrations are
reported below the RL but above the MDL. Level II QA/QC will be reported with the laboratory
analysis.

Analytical Summary
Assessment Samples
Sample Media # Samples Laboratory Analysis
Soil Gas 9 TO-15
Methane 9 x 2 days Field Recorded per Guidance
Quality Control Samples
Sample Media # Samples Laboratory Analysis
Duplicate Soil Gas 1 TO-15

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5.0 QA/QC

One (1) duplicate sample per collected media will be analyzed in accordance with the analysis
outlined in Section 4.0 of this document and Table 1.0 of this work plan. Soil vapor duplicates will
be collected utilizing a T-regulator flow controller.

The laboratory selects MS/MSD randomly for batch analysis. Laboratory provided containers are
sufficient volume to analyze the sample by MS/MSD if selected in accordance with the laboratory
QA/QC policy.

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6.0 INVESTIGATION DERIVED WASTE (IDW) MANAGMENT

Soil cuttings produced by soil gas implant installation will be spread thin on the ground surface
around each sampling location. No other IDW is anticipated for this assessment.

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7.0 REPORTING

A detailed report will be completed including, a summary report with a description of field activities,
tabulated data in comparison to applicable screening levels, historical data table and the laboratory
data packet with applicable QA/QC documentation (Level II QC), a site location map and site plan
with location of the sample point. Concentration map(s) for contaminants detected above
applicable standards will be included in the final report. Proposed redevelopment construction
details will be provided and evaluated with respect to sample location results and risk calculations.
Report will be completed by a NC PG or PE with appropriate signatures and/or seals.

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TABLES
BF Project No.Parcel No.Address Site Acreage Former/Current Use REC Proposed Use
08305308
511 E 25th
Street 2.64 Southern Wipers Man Historical Usage and Chlorinated
Solvent Impacts to GW at property Multi-Family Residential Apartments with
Parking Deck - 5 to 8 Story
8305302
2214 & 2218
North Brevard
Street 1.47
08305305 411 E 25th Street 0.088
08305306 NA 0.088
20006-16-060 Industrial Equipment
Supply/Repair,
Potential historical
Chrome Plating
Historical Usage and Chlorinated
Solvent Impacts to GW at property
Mixed Use - Commercial Office and
Residential with Parking Deck - Multi-Story
(TBD)
Table 1 - Property Summary
Soil Vapor Assessment Work Plan
Southern Wipers
SUMMIT Project No.: 3586.E0014
Sample Location
ID
Media
Sampled
Sample Depth
Interval (ft bgs)Lab Sample IDs Sample Analysis QA/QC Samples Notes/Comments
SV-1 Soil Gas Sub-Slab SV-1-1
SV-2 Soil Gas Sub-Slab SV-2-1
SV-3 Soil Gas Sub-Slab SV-3-1
SV-4 Soil Gas Sub-Slab SV-4-1
SV-5 Soil Gas Sub-Slab SV-5-1
SV-6 Soil Gas Sub-Slab SV-6-1
SV-7 Soil Gas Sub-Slab SV-7-1
SV-8 Soil Gas 5'SV-8-1
SV-9 Soil Gas 5'SV-9-1
SV-1 Methane Sub-Slab MT-1-1/MT-1-2
SV-2 Methane Sub-Slab MT-2-1/MT-2-2
SV-3 Methane Sub-Slab MT-3-1/MT-3-2
SV-4 Methane Sub-Slab MT-4-1/MT-4-2
SV-5 Methane Sub-Slab MT-5-1/MT-5-2
SV-6 Methane Sub-Slab MT-6-1/MT-6-2
SV-7 Methane Sub-Slab MT-7-1/MT-7-2
SV-8 Methane 5'MT-8-1/MT-8-2
SV-9 Methane 5'MT-9-1/MT-9-2
Sample Analysis will be compared to the current NC DWM VISLs and Risk Calculations.
Background samples not anticipated
NC DEQ Methane
Guidance - Sept. 2020 NA Methane Test from Soil Gas Implants installed at
5' bgs
Table 2 - Sampling Summary
Soil Vapor Assessment Work Plan
Southern Wipers
SUMMIT Project No.: 3586.E0014
VOC by EPA TO-15 +
Naphthalene 1 Duplicate
7 - Sub-Slab Sample Implants (Vapor Pin or
Equivalent) 2 - Soil Gas Implants installed at 5'
bgs
CAS VOC Analyte NC 2L GWQS
Res Vapor
GWSL Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL
67-64-1 Acetone 6.00E+03 4.50E+06 3900 250 6.8 J 5 ND 5 ND 5 ND 5 NT
78-93-3 2-Butanone (MEK)4.00E+03 4.50E+05 5 J 2 ND 2 ND 2 ND 2 ND 2 NT
156-59-2 cis-1,2-Dichloroethene 7.00E+01 NE ND 0.4 8.7 0.4 78 0.4 ND 0.4 ND 0.4 NT
156-60-5 trans-1,2-Dichloroethene 1.00E+02 2.20E+01 ND 0.4 11 0.4 10 0.4 ND 0.4 ND 0.4 NT
1634-04-4 Methyl tertiary butyl ether 2.00E+01 4.50E+02 ND 0.4 1.1 0.4 1 0.4 ND 0.4 ND 0.4 NT
108-88-3 Toluene 6.00E+02 3.80E+03 0.6 J 0.4 ND 0.4 ND 0.4 ND 0.4 ND 0.4 NT
79-01-6 Trichloroethene 3.00E+00 1.00E+00 ND 0.4 ND 0.4 56 0.4 ND 0.4 ND 0.4 NT
75-01-4 Vinyl chloride 3.00E-02 1.50E-01 ND 0.4 17 0.4 1.9 0.4 ND 0.4 ND 0.4 NT
1330-20-7 Xylenes (total)5.00E+02 7.70E+01 0.79 J 0.4 ND 0.4 ND 0.4 ND 0.4 ND 0.4 NT
CAS SVOC Analyte NC 2L GWQS
Res Vapor
GWSL Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL
83-32-9 Acenaphthene 8.00E+01 NE 0.066 J 0.04 ND 0.04 ND H 0.04 ND 0.04 ND 0.04 NT
120-12-7 Anthracene 2.00E+03 NE 0.045 J 0.04 ND 0.04 ND H 0.04 ND 0.04 ND 0.04 NT
117-81-7 bis(2-Ethylhexyl)phthalate 3.00E+00 NE 0.64 J 0.38 0.79 BJ 0.38 0.67 BHJ 0.38 0.7 0.38 3.1 BJ 0.38 NT
206-44-0 Fluoranthene 3.00E+02 NV 0.059 J 0.04 ND 0.04 ND H 0.04 ND 0.04 ND 0.04 NT
86-73-7 Fluorene 3.00E+02 NE 0.043 J 0.04 ND 0.04 ND H 0.04 ND 0.04 ND 0.04 NT
106-44-5 3+4-Methylphenol 4.00E+01 NV 0.53 J 0.46 ND 0.46 ND H 0.46 ND 0.46 ND 0.46 NT
91-20-3 Naphthalene 6.00E+00 4.60E+00 0.06 J 0.04 ND 0.04 0.045 HJ 0.04 ND 0.04 ND 0.04 NT
85-01-8 Phenanthrene 2.00E+02 NE 0.81 J 0.04 ND 0.04 ND H 0.04 ND 0.04 ND 0.04 NT
108-95-2 Phenol 3.00E+01 NV 1.7 0.19 ND 0.19 ND H 0.19 ND 0.19 ND 0.19 NT
129-00-0 Pyrene 2.00E+02 NE 0.041 J 0.04 ND 0.04 ND H 0.04 ND 0.04 ND 0.04 NT
CAS Metals NC 2L GWQS
Res Vapor
GWSL Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL
7440-38-2 Arsenic 1.00E+01 NA 6.2 1.3 ND 1.3 ND 1.3 1100 1.3 19 1.3 NT
7440-39-3 Barium 7.00E+02 NA 8.9 1.3 270 1.3 41 1.3 14 1.3 15 1.3 NT
7440-47-3 Chromium III 1.00E+01 NA ND 1.3 ND 1.3 1100 1.3 4.7 J 1.3 5 1.3 NT
18540-29-9 Chromium VI 1.00E+01 NA ND 5 ND 5 3200 5 ND 5 ND 5 NT
7440-50-8 Copper 1.00E+03 NA ND 1.3 ND 1.3 ND 1.3 2.5 J 1.3 ND 1.3 NT
7440-02-0 Nickel 1.00E+02 NA ND 1.3 ND 1.3 2 J 1.3 9.3 1.3 ND 1.3 NT
7440-66-6 Zinc 1.00E+03 NA ND 2.5 ND 2.5 3.2 J 2.5 59 2.5 80 2.5 NT
ND = Not detected at or above MDL J = Estimated Concentration (=<RL>MDL)
BOLD = Concentration Above Reference Values NT = Not Tested
MDL = Method Detection Limit NC 2L = NC Groundwater Standards
NE = Not Established NV = Non Volatile
B = Detected in Field Blank H = Out of Hold Time
GWSL = June 2021 Residential Vapor Intrusion Groundwater Screening Levels
Table 3: Historical Groundwater Detection Summary Table - Southern Wipers Parcel
Sample ID MW-17 MW-18 MW-19 MW-23 MW-24 MW-25
Sample Date 12/15/2020 12/15/2020 12/15/2020 12/15/2020 12/15/2020 12/15/2020
13'DestroyedDepth to Water ('bgs)0.9'9.28'9.25'0.7'9.18'
Temp Well Depth ('bgs)20'20'20'13'
All Values in ug/L DEQ Reference Values
CAS VOC Analyte NC 2L GWQS
Res Vapor
GWSL Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL
67-64-1 Acetone 6.00E+03 4.50E+06 ND 5 ND 5 12 J 5 12 J 5 ND 5 ND 5
67-66-3 Chloroform 7.00E+01 8.10E-01 ND 0.4 ND 0.4 0.47 J 0.4 0.48 J 0.4 ND 0.4 ND 0.4
156-59-2 cis-1,2-Dichloroethene 7.00E+01 NE ND 0.4 ND 0.4 0.95 J 0.4 1.1 0.4 ND 0.4 ND 0.4
79-01-6 Trichloroethene 3.00E+00 1.00E+00 0.71 J 0.4 ND 0.4 ND 0.4 ND 0.4 0.5 J 0.4 ND 0.4
CAS SVOC Analyte NC 2L GWQS
Res Vapor
GWSL Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL
83-32-9 Acenaphthene 8.00E+01 NE ND 0.04 0.37 0.04 ND 0.04 ND 0.04 ND 0.04 ND 0.04
208-96-8 Acenaphthylene 2.00E+02 NE ND 0.04 0.078 J 0.04 ND 0.04 ND 0.04 ND 0.04 ND 0.04
120-12-7 Anthracene 2.00E+03 NE ND 0.04 0.16 0.04 ND 0.04 ND 0.04 ND 0.04 ND 0.04
56-55-3 Benzo(a)anthracene 5.00E-02 3.40E+01 ND 0.04 0.21 0.04 ND 0.04 ND 0.04 ND 0.04 ND 0.04
50-32-8 Benzo(a)pyrene 5.00E-03 NV ND 0.04 0.22 0.04 ND 0.04 ND 0.04 ND 0.04 ND 0.04
205-82-3 Benzo(b)fluoranthene 5.00E-02 NV ND 0.04 0.3 0.04 ND 0.04 ND 0.04 ND 0.04 ND 0.04
191-24-5 Benzo(g,h,i)preylene 2.00E+02 NE ND 0.04 0.13 0.04 ND 0.04 ND 0.04 ND 0.04 ND 0.04
207-08-9 Benzo(k)fluoranthene 5.00E-01 NV ND 0.04 0.7 J 0.04 ND 0.04 ND 0.04 ND 0.04 ND 0.04
105-60-2 Caprolactam 4.00E+03 NV 37 3.6 57 3.6 1.1 J 0.71 1.7 J 0.71 0.74 J 0.71 0.77 J 0.71
86-74-8 Carbazole NE NE ND 0.04 0.41 J 0.04 ND 0.04 ND 0.04 ND 0.04 ND 0.04
218-01-9 Chrysene 5.00E+00 NV ND 0.04 0.15 J 0.04 ND 0.04 ND 0.04 ND 0.04 ND 0.04
132-64-9 Dibenzofuran NE NE ND 0.16 0.19 J 0.16 ND 0.16 ND 0.16 ND 0.16 ND 0.16
84-66-2 Diethylphthalate 6.00E+03 NE ND 0.18 ND 0.18 0.22 J 0.18 0.23 J 0.18 ND 0.18 ND 0.18
84-74-2 Di-n-butyl phthalate 7.00E+02 NE 0.52 J 0.42 0.45 J 0.42 ND 0.42 ND 0.42 ND 0.42 ND 0.42
117-81-7 bis(2-Ethylhexyl)phthalate 3.00E+00 NE 0.7 J 0.38 0.66 J 0.38 0.8 J 0.38 0.67 J 0.38 0.65 J 0.38 0.7 J 0.38
206-44-0 Fluoranthene 3.00E+02 NV ND 0.04 0.63 J 0.04 ND 0.04 ND 0.04 ND 0.04 ND 0.04
86-73-7 Fluorene 3.00E+02 NE ND 0.04 0.2 0.04 ND 0.04 ND 0.04 ND 0.04 ND 0.04
193-39-5 Ideno(1,2,3-c,d)pyrene 5.00E-02 NV ND 0.04 0.19 0.04 ND 0.04 ND 0.04 ND 0.04 ND 0.04
91-57-6 2-Methylnaphthalene 3.00E+01 NE ND 0.04 0.047 J 0.04 ND 0.04 ND 0.04 ND 0.04 ND 0.04
91-20-3 Naphthalene 6.00E+00 4.60E+00 ND 0.04 0.089 J 0.04 ND 0.04 ND 0.04 ND 0.04 ND 0.04
85-01-8 Phenanthrene 2.00E+02 NE 0.08 J 0.04 0.89 0.04 ND 0.04 ND 0.04 ND 0.04 ND 0.04
129-00-0 Pyrene 2.00E+02 NE ND 0.04 0.45 0.04 ND 0.04 ND 0.04 ND 0.04 ND 0.04
CAS Metals NC 2L GWQS
Res Vapor
GWSL Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL
7440-38-2 Arsenic 1.00E+01 NA ND 1.3 ND 1.3 ND 1.3 ND 1.3 ND 1.3 1.4 J 1.3
7440-39-3 Barium 7.00E+02 NA 76 1.3 79 1.3 130 1.3 160 1.3 89 1.3 270 1.3
7440-43-9 Cadmium 2.00E+00 NA 0.13 J 0.13 ND 0.13 ND 0.13 ND 0.13 ND 0.13 ND 0.13
7440-47-3 Chromium III 1.00E+01 NA 4.7 J 1.3 1.4 J 1.3 9.3 1.3 7.1 1.3 2.8 1.3 31 1.3
18540-29-9 Chromium VI 1.00E+01 NA ND 5 ND 5 ND 5 ND 5 ND 5 ND 5
7440-50-8 Copper 1.00E+03 NA 11 1.3 2.5 J 1.3 5.5 1.3 4.8 J 1.3 4.2 J 1.3 24 1.3
7439-92-1 Lead 1.50E+01 NA 2.1 0.25 0.44 J 0.25 2.4 0.25 1.9 0.25 0.43 J 0.25 5.5 0.25
7440-02-0 Nickel 1.00E+02 NA 8.9 1.3 2 J 1.3 3.4 J 1.3 3.2 J 1.3 1.8 J 1.3 13 1.3
7782-49-2 Selenium 2.00E+01 NA ND 1.3 1.7 J 1.3 ND 1.3 ND 1.3 ND 1.3 ND 1.3
7440-66-6 Zinc 1.00E+03 NA 20 2.5 4.6 J 2.5 10 2.5 9.7 J 2.5 5.9 J 2.5 50 2.5
ND = Not detected at or above MDL J = Estimated Concentration (=<RL>MDL)
BOLD = Concentration Above Reference Values NT = Not Tested
MDL = Method Detection Limit NC 2L = NC Groundwater Standards
NE = Not Established NV = Non Volatile
B = Detected in Field Blank H = Out of Hold Time
GWSL = June 2021 Residential Vapor Intrusion Groundwater Screening Levels
Table 3: Historical Groundwater Detection Summary Table - N. Brevard Street Parcels
Sample ID TMW-1 TMW-2 TMW-3 TMW-3-D TMW-4 TMW-5
Sample Date 12/15/2020 12/15/2020 12/15/2020 12/15/2020 12/15/2020 12/15/2020
13.5 12.5'
Depth to Water ('bgs)6.1'4'1.8'1.8'1.9'2.1'
Temp Well Depth ('bgs)14'12.5'12.5'12.5'
All Values in ug/L DEQ Reference Values
CAS VOC Analyte PSRG-Res
Protection of
GW Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL
67-64-1 Acetone 1.20E+04 2.50E+01 0.091 J 0.091 0.059 J 0.025 0.062 J 0.022 0.042 J 0.023 0.034 J 0.025 0.099 J 0.025 0.031 J 0.021
67-66-3 Chloroform 3.40E-01 3.90E-01 BDL 0.00064 BDL 0.0076 BDL 0.00064 0.0035 J 0.00068 BDL 0.00074 BDL 0.00076 BDL 0.00064
127-18-4 Tetrachloroethylene 1.70E+00 6.30E-03 BDL 0.0012 BDL 0.0014 0.0031 0.0012 BDL 0.0013 BDL 0.0014 BDL 0.0014 BDL 0.0014
79-01-6 Trichloroethylene 8.70E-01 2.10E-02 BDL 0.00091 BDL 0.0011 BDL 0.00092 BDL 0.00097 BDL 0.0011 BDL 0.0011 0.0011 J 0.00092
CAS SVOC Analyte PSRG-Res
Protection of
GW Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL
56-55-3 Benzo(a)anthracene 1.10E+00 3.50E-01 BDL 0.052 0.068 J 0.056 BDL 0.052 BDL 0.056 BDL 0.057 BDL 0.057 BDL 0.057
50-32-8 Benzo(a)pyrene 1.10E-01 1.20E-01 BDL 0.061 0.11 J 0.066 BDL 0.062 BDL 0.066 BDL 0.067 BDL 0.067 BDL 0.067
205-99-2 Benzo(b)fluoranthene 1.10E+00 1.20E+00 0.073 J 0.052 0.13 J 0.06 BDL 0.056 BDL 0.06 BDL 0.061 BDL 0.061 BDL 0.061
191-24-2 Benzo(g,h,i)perylene NA I 1.56E+04 BDL 0.087 0.1 J 0.094 BDL 0.087 BDL 0.093 BDL 0.095 BDL 0.095 BDL 0.095
65-85-0 Benzoic Acid 5.10E+04 1.20E+02 BDL 0.21 BRL 0.23 BDL 0.21 BDL 0.23 BDL 0.23 BDL 0.23 BDL 0.23
206-44-0 Fluoranthene 4.80E+02 6.70E+02 0.071 J 0.065 0.086 J 0.07 BDL 0.065 BDL 0.07 BDL 0.071 BDL 0.071 BDL 0.071
129-00-0 Pyrene 3.60E+02 4.40E+02 BDL 0.065 0.1 J 0.07 BDL 0.065 BDL 0.07 BDL 0.071 BDL 0.071 BDL 0.071
CAS Metals PSRG-Res
Protection of
GW Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL
7440-38-2 Arsenic 6.80E-01 5.80E+00 4.2 0.032 4.4 0.035 1 0.03 1.1 0.033 1 0.035 1.6 0.034 1.1 0.034
16065-83-1 Chromium (III)**2.30E+04 3.60E+05 91 0.69 31 0.19 52 0.17 82 0.18 95.46 0.19 128.8 0.74 35.59 0.19
18540-29-9 Chromium (VI)3.10E-01 3.80E+00 BDL 0.23 BDL 0.097 BDL 0.09 BDL 0.098 0.54 0.1 1.2 0.1 0.41 0.1
7439-92-1 Lead NA 2.70E+02 25 0.063 22 0.069 17 0.061 10 0.067 10 0.07 9.5 0.068 7.5 0.069
7439-97-6 Mercury 2.30E+00 1.00E+00 0.036 0.0029 0.042 0.0032 0.039 0.0029 0.042 0.003 0.063 0.0031 0.061 0.0031 0.036 0.0034
7440-22-4 Silver 7.80E+01 3.40E+00 0.091 0.0031 0.052 J 0.0034 0.038 J 0.003 0.12 0.0033 0.096 0.0034 0.091 0.0033 0.05 J 0.0033
7440-39-3 Barium 3.10E+03 5.80E+02 120 1.6 63 0.43 78 0.38 120 1.7 90 0.44 110 1.7 100 0.43
7440-43-9 Cadmium 1.40E+01 3.00E+00 0.42 0.012 0.049 J 0.013 BDL 0.012 BDL 0.013 BDL 0.014 BDL 0.013 BDL 0.013
BDL = Below Detection Limit J = Estimated Concentration MDL = Lab Detection Limit
BOLD = Concentration Above Reference Values NT = Not Tested I = PSRG Appendix A Table
** -Chromium Speciation - Chromium (III) determined by subtracting Chromium (VI) from Total Chromium (7440-47-3) reported in analaytical reports
Table 4: Historical Soil Detection Summary Table - Southern Wipers Parcel
DEQ Reference Values SB-1 SB-2 SB-3 SB-4 SB-5 SB-6 SB-7
9/21/20189/21/2018 9/21/2018 9/21/2018 9/21/2018 9/21/2018
0-2' bgs
9/21/2018
All Values in mg/kg 0-2' bgs 0-2' bgs 0-2' bgs 0-2' bgs 0-2' bgs 0-2' bgs
CAS VOC Analyte PSRG-Res
Protection of
GW Result MDL Result MDL Result MDL Result DL Result MDL
67-64-1 Acetone 1.20E+04 2.50E+01 0.047 J 0.021 0.045 J 0.022 0.034 J 0.023 0.026 J 0.026 NT
67-66-3 Chloroform 3.40E-01 3.90E-01 BDL 0.00064 BDL 0.00067 BDL 0.00069 BDL 0.00076 NT
127-18-4 Tetrachloroethylene 1.70E+00 6.30E-03 BDL 0.0012 BDL 0.0012 BDL 0.0013 BDL 0.0014 NT
79-01-6 Trichloroethylene 8.70E-01 2.10E-02 BDL 0.00091 BDL 0.00096 BDL 0.00099 BDL 0.0011 NT
CAS SVOC Analyte PSRG-Res
Protection of
GW Result MDL Result DL Result MDL Result MDL Result MDL
56-55-3 Benzo(a)anthracene 1.10E+00 3.50E-01 BDL 0.051 BDL 0.052 BDL 0.055 BDL 0.06 NT
50-32-8 Benzo(a)pyrene 1.10E-01 1.20E-01 BDL 0.061 BDL 0.061 BDL 0.065 BDL 0.071 NT
205-99-2 Benzo(b)fluoranthene 1.10E+00 1.20E+00 BDL 0.055 BDL 0.055 0.65 J 0.059 0.13 J 0.064 NT
191-24-2 Benzo(g,h,i)perylene NA I 1.56E+04 BDL 0.086 BDL 0.086 BDL 0.092 BDL 0.1 NT
65-85-0 Benzoic Acid 5.10E+04 1.20E+02 BDL 0.21 BDL 0.21 BDL 0.22 0.32 J 0.24 NT
206-44-0 Fluoranthene 4.80E+02 6.70E+02 BDL 0.064 BDL 0.064 0.094 J 0.069 BDL 0.075 NT
129-00-0 Pyrene 3.60E+02 4.40E+02 BDL 0.064 BDL 0.064 0.082 J 0.069 0.082 J 0.075 NT
CAS Metals PSRG-Res
Protection of
GW Result MDL Result MDL Result MDL Result MDL Result MDL
7440-38-2 Arsenic 6.80E-01 5.80E+00 0.73 0.032 0.66 0.03 1.7 0.033 240 0.14 50 0.038
16065-83-1 Chromium (III)**2.30E+04 3.60E+05 59.39 0.17 58.4 0.17 48.49 0.18 52.1 0.19 17.4 0.21
18540-29-9 Chromium (VI)3.10E-01 3.80E+00 0.61 0.1 0.6 0.091 0.51 0.09 2.9 0.1 1.6 0.11
7439-92-1 Lead NA 2.70E+02 11 0.064 8.1 0.061 15 0.066 19 0.07 4.9 0.077
7439-97-6 Mercury 2.30E+00 1.00E+00 0.03 0.0029 0.028 0.0027 0.042 0.0031 0.019 J 0.0034 0.0057 J 0.0034
7440-22-4 Silver 7.80E+01 3.40E+00 0.087 0.0031 0.071 J 0.003 0.059 J 0.0032 0.038 J 0.0034 0.026 J 0.0037
7440-39-3 Barium 3.10E+03 5.80E+02 92 0.39 110 1.5 140 1.6 46 0.44 76 0.48
7440-43-9 Cadmium 1.40E+01 3.00E+00 0.016 J 0.012 BDL 0.012 BDL 0.013 0.8 0.014 0.12 0.015
BDL = Below Detection Limit J = Estimated Concentration MDL = Lab Detection Limit
BOLD = Concentration Above Reference Values NT = Not Tested I = PSRG Appendix A Table
** -Chromium Speciation - Chromium (III) determined by subtracting Chromium (VI) from Total Chromium (7440-47-3) reported in analaytical reports
Table 4: Historical Soil Detection Summary Table - Southern Wipers Parcel
DEQ Reference Values
SB-8 SB-8 DUP SB-9 SB-10 BG-1
9/21/2018 9/21/2018 9/21/2018 9/21/2018 9/25/2018
0-2' bgsAll Values in mg/kg 0-2' bgs 0-2' bgs 0-2' bgs 0-2' bgs
CAS VOC Analyte PSRG-Res
Protection of
GW Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL
67-64-1 Acetone 1.20E+04 2.50E+01 ND 0.01 ND 0.009 ND 0.008 ND 0.008 ND 0.007 ND 0.009
78-93-3 2-Butanone (MEK)5.50E+03 1.70E+01 ND 0.002 ND 0.004 ND 0.004 ND 0.004 ND 0.003 ND 0.004
CAS SVOC Analyte PSRG-Res
Protection of
GW Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL
83-32-9 Acenaphthene 7.20E+02 1.60E+01 ND 0.005 ND 0.001 0.016 J 0.005 0.011 J 0.005 0.23 J 0.1 1 0.09
208-96-8 Acenaphthylene NE NE 0.013 J 0.006 ND 0.001 ND 0.006 ND 0.006 0.57 0.11 1 0.1
120-12-7 Anthracene 3.60E+03 1.30E+03 0.006 J 0.003 ND 0.0007 0.071 0.003 0.034 0.003 1.2 0.061 4 0.055
56-55-3 Benzo(a)anthracene 1.10E+00 3.50E-01 0.047 0.003 ND 0.008 0.18 0.004 0.07 0.003 3.6 0.071 11 0.064
50-32-8 Benzo(a)pyrene 1.10E-01 1.20E-01 0.069 0.004 ND 0.009 0.18 0.004 0.077 0.004 4.2 0.079 14 0.071
205-82-3 Benzo(b)fluoranthene 1.10E+00 1.20E+00 0.075 0.003 ND 0.006 0.19 0.003 0.093 0.003 4.7 0.06 17 0.054
191-24-5 Benzo(g,h,i)perylene NE NE 0.045 0.004 ND 0.009 0.14 0.004 0.14 0.004 1.7 0.078 4.7 0.07
207-08-9 Benzo(k)fluoranthene 1.10E+01 1.20E+01 0.028 0.003 ND 0.006 0.083 0.003 0.032 0.003 2 0.058 7 0.052
86-74-8 Carbazole NE NE ND 0.033 ND 0.006 ND 0.034 ND 0.032 ND 0.6 2.1 0.54
218-01-9 Chrysene 1.10E+02 3.60E+01 0.043 0.002 ND 0.0006 0.18 0.003 0.071 0.002 3.6 0.54 11 0.049
132-64-9 Dibenzofuran 1.60E+01 1.00E+01 ND 0.033 ND 0.006 ND 0.034 ND 0.032 ND 0.6 0.78 J 0.54
206-44-0 Fluoranthene 4.80E+02 6.70E+02 0.066 0.002 ND 0.0005 0.42 0.002 0.16 0.002 6.8 0.051 22 0.045
86-73-7 Fluorene 4.80E+02 1.10E+02 ND 0.003 ND 0.0007 0.012 J 0.003 0.0077 J 0.003 0.38 0.069 1.4 0.062
193-39-5 Ideno(1,2,3-c,d)pyrene 1.10E+00 3.90E+00 0.044 0.006 ND 0.001 0.001 0.006 0.057 0.006 1.6 0.12 0.6 0.11
91-57-6 2-Methylnaphthalene 4.80E+01 3.10E+00 ND 0.006 ND 0.001 ND 0.006 ND 0.006 0.29 J 0.12 1 0.11
91-20-3 Naphthalene 2.10E+00 3.90E-01 0.008 J 0.006 ND 0.001 ND 0.069 ND 0.006 0.43 0.12 1 0.1
87-86-5 Pentachlorophenol 1.00E+00 8.30E-03 ND 0.16 ND 0.035 ND 0.17 ND 0.16 5.6 J 3 9 2.7
85-01-8 Phenanthrene NE NE 0.025 0.004 ND 0.001 0.24 0.004 0.12 0.004 3.8 0.087 12 78
129-00-0 Pyrene 3.60E+02 4.40E+02 0.066 0.003 ND 0.0006 0.36 0.003 0.13 0.003 5.5 0.06 17 0.054
CAS Metals PSRG-Res
Protection of
GW Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL
7440-38-2 Arsenic 6.80E-01 5.80E+00 2.1 0.24 1.7 0.66 2.7 0.27 1.9 0.23 4.7 0.21 4.5 0.2
7440-39-3 Barium 3.10E+03 5.80E+02 69 0.37 64 1.7 180 2.1 91 1.8 160 1.7 130 1.6
7440-43-9 Cadmium 1.40E+01 3.00E+00 0.03 J 0.03 ND 0.17 ND 0.033 ND 0.029 0.38 0.027 0.54 0.025
7440-47-3 Chromium III 2.30E+04 3.60E+05 32 3.3 29 8.6 37 3.7 29.35 3.2 37 0.59 37.2 0.56
18540-29-9 Chromium VI 3.10E-01 3.80E+00 ND 0.67 ND 0.71 ND 0.68 0.65 J 0.63 ND 0.6 1.8 0.55
7440-50-8 Copper 6.30E+02 7.00E+02 61 0.39 69 1.7 55 0.43 62 0.38 40 0.35 110 1.6
7439-92-1 Lead NE 2.70E+02 11 0.081 6.6 0.33 9.2 0.45 5.2 0.079 63 0.073 220 0.34
7439-97-6 Mercury 2.30E+00 1.00E+00 0.029 0.024 ND 0.11 ND 0.024 ND 0.023 0.053 J 0.022 0.088 0.02
7440-02-0 Nickel 3.10E+02 1.30E+02 15 1.8 11 8.6 19 2 16 1.8 10 0.32 13 0.3
7782-49-2 Selenium 7.80E+01 2.10E+00 ND 2.8 ND 8.6 3.3 J 3.2 ND 2.8 0.95 0.51 0.98 J 0.48
7440-22-4 Silver 7.80E+01 3.40E+00 ND 0.06 ND 0.06 ND 0.06 ND 0.06 ND 0.06 0.097 J 0.06
7440-66-6 Zinc 4.70E+03 1.20E+03 39 0.6 34 0.66 51 0.67 45 0.58 110 2.7 180 0.25
ND = Not detected at or above MDL J = Estimated Concentration (=<RL>MDL)
BOLD = Concentration Above Reference Values NT = Not Tested
MDL = Method Detection Limit
NE = Not Established
B = Detected in Field Blank
PSRG = June 2021 Residential Preliminary Soil Remediation Goals
Table 4: Historical Soil Detection Summary Table - N. Brevard Street Parcels
Sample ID SB-1-0-2 SB-1-2-4 SB-2-0-2 SB-2-4 SB-3-0-2 SB-3-2-4
Sample Date 12/10/2020 12/10/2020 12/10/2020 12/10/2020
Sample Interval ('bgs)0-2'2-4'0-2'2-4'0-2'2-4'
12/10/2020 12/10/2020
All Values in mg/kg DEQ Reference Values
CAS VOC Analyte PSRG-Res
Protection of
GW Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL
67-64-1 Acetone 1.20E+04 2.50E+01 0.019 J 0.008 0.014 J 0.008 0.082 0.007 0.037 0.007 0.092 0.008 0.026 0.007 0.014 J 0.007
78-93-3 2-Butanone (MEK)5.50E+03 1.70E+01 ND 0.004 ND 0.003 0.017 J 0.003 0.005 J 0.003 0.019 J 0.004 ND 0.003 ND 0.002
CAS SVOC Analyte PSRG-Res
Protection of
GW Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL
83-32-9 Acenaphthene 7.20E+02 1.60E+01 0.072 0.005 ND 0.005 ND 0.005 ND 0.005 0.034 J 0.011 ND 0.004 ND 0.021
208-96-8 Acenaphthylene NE NE 0.012 J 0.005 ND 0.005 ND 0.006 ND 0.005 0.31 J 0.013 ND 0.005 0.024 J 0.024
120-12-7 Anthracene 3.60E+03 1.30E+03 0.22 0.003 0.014 J 0.003 0.007 J 0.003 0.004 J 0.003 0.071 0.006 ND 0.002 0.028 J 0.013
56-55-3 Benzo(a)anthracene 1.10E+00 3.50E-01 0.6 0.003 0.072 0.003 0.029 0.003 0.018 0.003 0.63 0.007 0.015 0.003 0.11 0.015
50-32-8 Benzo(a)pyrene 1.10E-01 1.20E-01 0.58 0.004 0.085 0.004 0.038 0.004 0.026 0.004 0.75 0.008 0.024 0.003 0.17 0.017
205-82-3 Benzo(b)fluoranthene 1.10E+00 1.20E+00 0.64 0.003 0.092 0.003 0.048 0.003 0.03 0.003 0.72 0.006 0.028 0.002 0.19 0.013
191-24-5 Benzo(g,h,i)preylene NE NE 0.27 0.004 0.044 0.004 0.016 J 0.004 0.008 J 0.003 0.46 0.008 0.007 J 0.003 0.047 J 0.017
207-08-9 Benzo(k)fluoranthene 1.10E+01 1.20E+01 0.26 0.003 0.037 0.003 0.004 J 0.003 0.006 J 0.002 0.35 0.006 0.005 J 0.002 0.057 J 0.012
86-74-8 Carbazole NE NE 0.086 0.031 ND 0.031 ND 0.032 ND 0.03 ND 0.066 NS 0.028 ND 0.13
218-01-9 Chrysene 1.10E+02 3.60E+01 0.57 0.002 0.07 0.002 0.025 0.002 0.013 J 0.002 0.63 0.006 0.009 J 0.002 0.074 0.069
132-64-9 Dibenzofuran 1.60E+01 1.00E+01 0.036 J 0.031 ND 0.031 ND 0.032 ND 0.03 ND 0.066 ND 0.028 ND 0.13
206-44-0 Fluoranthene 4.80E+02 6.70E+02 1.4 0.002 0.13 0.002 0.042 0.002 0.027 0.002 0.96 0.005 0.019 0.002 0.12 0.011
86-73-7 Fluorene 4.80E+02 1.10E+02 0.063 0.003 0.0056 J 0.003 ND 0.003 ND 0.003 0.04 0.007 ND 0.003 ND 0.014
193-39-5 Ideno(1,2,3-c,d)pyrene 1.10E+00 3.90E+00 0.23 0.006 0.046 0.006 0.023 0.006 0.016 0.006 0.38 0.013 0.014 J 5 0.078 0.025
91-57-6 2-Methylnaphthalene 4.80E+01 3.10E+00 0.018 0.006 ND 0.006 0.006 J 0.006 0.006 J 0.005 0.023 J 0.013 ND 0.005 ND 0.025
91-20-3 Naphthalene 2.10E+00 3.90E-01 0.019 0.006 ND 0.006 0.007 J 0.006 0.005 J 0.005 0.064 0.013 ND 0.005 ND 0.025
87-86-5 Pentachlorophenol 1.00E+00 8.30E-03 ND 0.031 ND 0.15 ND 0.15 ND 0.15 ND 0.33 ND 0.14 ND 0.64
85-01-8 Phenanthrene NE NE 0.87 0.004 0.05 0.004 0.024 0.004 0.02 0.004 0.27 0.009 0.008 J 0.004 0.069 0.018
129-00-0 Pyrene 3.60E+02 4.40E+02 0.017 0.003 0.11 0.003 0.037 0.003 0.024 0.003 1 0.006 0.016 0.002 0.12 0.013
CAS Metals PSRG-Res
Protection of
GW Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL
7440-38-2 Arsenic 6.80E-01 5.80E+00 1.7 0.25 1.4 0.22 3 0.23 1.2 0.23 2.7 0.23 1.6 0.2 0.96 0.23
7440-39-3 Barium 3.10E+03 5.80E+02 150 1.9 150 1.7 120 1.8 54 0.36 130 1.8 120 1.6 94 1.8
7440-43-9 Cadmium 1.40E+01 3.00E+00 ND 0.031 ND 0.028 0.069 J 0.029 ND 0.029 0.037 J 0.029 0.0068 J 0.026 0.073 J 0.029
7440-47-3 Chromium III 2.30E+04 3.60E+05 20 0.69 15 0.62 22 0.65 18 0.63 25 0.64 19 0.56 189.3 3.2
18540-29-9 Chromium VI 3.10E-01 3.80E+00 ND 0.63 ND 0.62 ND 0.62 ND 0.61 ND 0.66 1 J 0.57 0.7 J 0.64
7440-50-8 Copper 6.30E+02 7.00E+02 58 0.4 54 0.36 42 0.38 28 0.37 34 0.38 35 0.33 170 1.9
7439-92-1 Lead NE 2.70E+02 5.6 0.085 5.1 0.076 12 0.4 4.4 0.078 9.7 0.4 2.4 0.069 2 0.078
7439-97-6 Mercury 2.30E+00 1.00E+00 ND 0.024 ND 0.024 0.04 J 0.023 ND 0.023 0.041 J 0.023 ND 0.02 ND 0.023
7440-02-0 Nickel 3.10E+02 1.30E+02 17 0.37 17 0.34 9.8 0.35 13 0.34 10 0.035 16 0.31 43 0.35
7782-49-2 Selenium 7.80E+01 2.10E+00 0.94 J 0.59 0.83 J 0.53 1.9 0.55 1.1 0.54 1.9 0.55 1.2 J 0.48 ND 0.54
7440-66-6 Zinc 4.70E+03 1.20E+03 80 0.62 100 2.8 43 0.59 21 0.57 34 0.58 45 0.51 63 0.58
ND = Not detected at or above MDL J = Estimated Concentration (=<RL>MDL)
BOLD = Concentration Above Reference Values NT = Not Tested
MDL = Method Detection Limit
NE = Not Established
B = Detected in Field Blank
PSRG =June 2021 Residential Preliminary Soil Remediation Goals
Table 4: Historical Soil Detection Summary Table - N. Brevard Street Parcels
Sample ID SB-4-0-2 SB-4-0-2-D SB-4-2-4 SB-5-0-2 SB-5-2-4 SB-6-0-2
2-4'
SB-7
Sample Date 12/10/2020 12/10/2020 12/10/2020 12/10/2020 12/10/2020 12/10/2020 12/10/2020
0-2'10-12'
All Values in mg/kg DEQ Reference Values
Sample Interval ('bgs)0-2'0-2'2-4'0-2'
Soil Vapor Assessment Work Plan – Revision #1 SUMMIT Project No. 3586.E0014
Charlotte, Mecklenburg County, North Carolina December 29, 2021

C:\plowery\Documents\1-Proposals\3586.E0014 Southern Wipers Soil Vapor Assessment\Revised 12-29-21\Appendix Figures.rtf

FIGURES
Source:USGS Topographic 7.5' Quadrangle Prepared By\Date:PL/12/21
Checked By\Date:MZ/12/21
Scale
Figure 1
1420 East 7th Street, Suite 150 As Shown
Charlotte, NC 28204
Site Location Map
Southern WipersE. 25th St. & N. Brevard St.Charlotte, North Carolina
Proffitt Dixon Partners, LLC
N
Subject Site
Source: Proffitt Dixon Partners
Prepared By\Date:PL/12/21Checked By\Date:MZ/12/21
Scale
Figure 2ANot to Scale
Charlotte, NC
Proposed Development Plan
Southern Wipers Parcel NC DEQ Brownfields
Southern Wipers Brownfields 610 East Center Avenue
N. Brevard Street Mooresville, NC 28115
N
C
Source: Drawn by SUMMIT
Prepared By\Date:PL/12/21Checked By\Date:MZ/12/21
Scale
Figure 2B1 inch = 80 feet
Charlotte, NC
Aerial with Development Overlay
Southern Wipers Parcel NC DEQ Brownfields
Southern Wipers Brownfields 610 East Center Avenue, Suite 301
N. Brevard Street Mooresville, NC 28115
N
C
Proposed Residential
KEY
Existing Structure/Slab
Proposed Structure
Proposed Parking Deck
Proposed Pool
Courtyard
ProposedCourtyard
Source: Proffitt Dixon Partners
Prepared By\Date:PL/12/21Checked By\Date:MZ/12/21
Scale
Figure 2CNot to Scale
Charlotte, NC
Proposed Development Plan
N. Brevard Street Parcels NC DEQ Brownfields
Southern Wipers Brownfields 610 East Center Avenue
N. Brevard Street Mooresville, NC 28115
N
C
Source: Drawn by SUMMIT
Prepared By\Date:PL/11/21Checked By\Date:MZ/11/21
Scale
Figure 2D1 inch = 84 feet
Charlotte, NC
Assessment Plan with Development Overlay
N. Brevard Street Parcels NC DEQ Brownfields
Southern Wipers Brownfields 610 East Center Avenue, Suite 301
N. Brevard Street Mooresville, NC 28115
N
Commercial Office
Residential
KEY
Existing Structure/Slab
Proposed Structure
Multi-Family
Southern Wipers Parcel
Source: Drawn by SUMMIT
Prepared By\Date:PL/12/21Checked By\Date:MZ/12/21
Scale
Figure 3ANot to Scale
Assessment Sampling Plan - Current Site Layout
Southern Wipers Brownfields NC DEQ Brownfields
E. 25th & N. Brevard Streets 610 East Center Avenue
Charlotte, NC Mooresville, NC 28115
N
Land Acquisitions in Process
KEY
Soil Gas Sample Point
Sub-Slab Sample Point
Source: Drawn by SUMMIT
Prepared By\Date:PL/12/21Checked By\Date:MZ/12/21
Scale
Figure 3B1 inch = 80 feet
Charlotte, NC
Assessment Plan with Development Overlay
Southern Wipers Parcel NC DEQ Brownfields
Southern Wipers Brownfields 610 East Center Avenue, Suite 301
N. Brevard Street Mooresville, NC 28115
N
C
Proposed Residential
KEY
Soil Gas Sample Point
Sub-Slab Sample Point
Existing Structure/Slab
Proposed Structure
Proposed Parking Deck
Proposed Pool
Courtyard
ProposedCourtyard
Source: Drawn by SUMMIT
Prepared By\Date:PL/11/21Checked By\Date:MZ/11/21
Scale
Figure 3C1 inch = 84 feet
Charlotte, NC
Assessment Plan with Development Overlay
N. Brevard Street Parcels NC DEQ Brownfields
Southern Wipers Brownfields 610 East Center Avenue, Suite 301
N. Brevard Street Mooresville, NC 28115
N
Former UST Basin
Commercial Office
Residential
KEY
Soil Gas Sample Point
Sub-Slab Sample Point
Existing Structure/Slab
Proposed Structure
Source: Drawn by SUMMIT
Prepared By\Date:PL/06/21Checked By\Date:MZ/06/21
Scale
Figure 4AAs Shown
TCE in Groundwater Map
Southern Wipers Brownfields Proffitt Dixon Partners, LLC
E. 25th & N. Brevard Streets 1420 East 7th Street, Suite 150
Charlotte, NC Charlotte, NC 28204
N TMW-2(ND)
TMW-5
(ND)
TMW-4
(0.5)
TMW-1
(0.71)
Former UST Basin
MW-25
(Destroyed)
MW-18
(ND)
MW-24(ND)
MW-19
(56)
MW-17
(ND)
MW-23
(ND)
TMW-3(ND)
KEY
Temporary Monitoring Well
Existing Monitoring Well
May 2020 Assessment By Hart & Hickman
(56) TCE Concentration Exceeding NC2L
Proposed Sub-Slab Vapor Implant
Proposed Soil Gas Sample Implant
Results in ug/L
ND II MW-4
(669)
ND II MW-3
(110)
Source: Drawn by SUMMIT
Prepared By\Date:PL/06/21Checked By\Date:MZ/06/21
Scale
Figure 4BAs Shown
Other Exceedances in Groundwater
Southern Wipers Brownfields Proffitt Dixon Partners, LLC
E. 25th & N. Brevard Streets 1420 East 7th Street, Suite 150
Charlotte, NC Charlotte, NC 28204
N
KEY
Temporary Monitoring Well
Existing Monitoring Well
(17) Concentration Exceeding NC2L
Proposed Sub-Slab Vapor Implant
Proposed Soil Gas Sample Implant
Results in ug/L
TMW-2(PAHs)
TMW-5
TMW-4
TMW-1
Former UST Basin
MW-25
(Destroyed)
MW-18
Vinyl chloride (17)
MW-24
Arsenic (19)
MW-19
cis-1,2, DCE (78)
Chromium VI (3200)
Chromium III (1100)
MW-17
MW-23
Arsenic (1100)
TMW-3