25050_Assistance League_VIMP_20221027

October 27, 2022 Sent Via E-mail Alex Eyssen MCRT Carolinas, LLC 101 W. Worthington Avenue, Suite 210 Charlotte, NC 28203 [e-mail] Subject: VIMP Approval Assistance League 3405 South Tryon Street Charlotte, NC Brownfields Project Number 25050-21-060 Dear Mr. Eyssen: The North Carolina Department of Environmental Quality Brownfields Program (DEQ Brownfields) received and reviewed the Vapor Intrusion Mitigation Plan (VIMP)- Revision 2, dated October 24, 2022, and has found the VIMP to be in compliance with the Brownfields Vapor Intrusion Mitigation System
Design Submittal New Construction Minimum Requirements Checklist dated March 2018. Consistent with standard brownfields vapor intrusion provisions which will be included in the future brownfields agreement for this project, an essential component of public health protection for this design
is the professional engineer’s seal of these documents that the proposed design will be effective at mitigating the potential for vapor intrusion at the property and protecting public health. Furthermore, the safe occupancy of the building will be evaluated upon system effectiveness, sub-slab soil gas sampling, and indoor air sampling as required by Sections 4 and 5 of the VIMP. In addition, DEQ Brownfields reserves the authority to require confirmation of efficacy in the future. Please be advised that this design compliance review 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 any questions, please contact me at [phone], or via e-mail at [e-mail]. Sincerely,
Jordan Thompson Brownfields Project Manager ec: Ralph McGee and Trinh Desa, Hart & Hickman Kelly Johnson and Seth Titley, DEQ Brownfields

Via Email October 24, 2022 NCDEQ – Division of Waste Management Brownfields Program 1646 Mail Service Center Raleigh, North Carolina 27699-1646 Attn: Ms. Jordan Thompson
Re: Vapor Intrusion Mitigation Plan – Revision 2
Assistance League 3405 S. Tryon Street Charlotte, North Carolina
Brownfields Project No. 25050-21-060 H&H Project No. MLR-001 Dear Jordan: On behalf of MCRT Carolinas, LLC, please find the enclosed Vapor Intrusion Mitigation Plan – Revision 2 dated October 24, 2022 prepared for the proposed multi-family development planned at the Assistance League Brownfields property in Charlotte, Mecklenburg County. Should you have questions or need additional information, please do not hesitate to contact us at [phone]. Sincerely,
Hart & Hickman, PC
Ralph McGee Trinh DeSa, PE Project Manager Engineering Manager
Enclosure: cc: Mr. Tim Marsh, Mill Creek (via email) Ms. Mary Katherine Stukes, Moore & Van Allen (via email)
Ms. Haley Martin, Hart & Hickman (via email) Mr. Kelly Johnson, NCDEQ (via email) Mr. Seth Titley, NCDEQ (via email)
Mr. Payton Stull, NCDEQ (via email)

#C-1269 Engineering
#C-245 Geology

Vapor Intrusion Mitigation Plan
Revision 2
Modera LoSo

Assistance League
3405 South Tryon Street
Charlotte, North Carolina
Brownfields Project No. 25050-21-060

H&H Job No. MLR-001 October 24, 2022

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Vapor Intrusion Mitigation Plan – Revision 2 Modera LoSo
Assistance League Charlotte, North Carolina H&H Job No. MLR-001
Table of Contents
1.0 Introduction ................................................................................................................ 1
1.1 Previous Assessments ............................................................................................1
1.2 Vapor Intrusion Evaluation ...................................................................................5
2.0 Design Basis ................................................................................................................ 8
2.1 Base Course Layer and Vapor Barrier ...................................................................8
2.2 Horizontal Collection Piping and Vertical Riser Piping .....................................10
2.3 Monitoring Points ................................................................................................11
2.4 General Installation Criteria ................................................................................12
3.0 Quality Assurance / Quality Control ..................................................................... 14
4.0 VIMS Effectiveness Testing .................................................................................... 16
4.1 Influence Testing .................................................................................................16
4.2 Pre-Occupancy Analytical Sampling ..................................................................17
4.3 VIMS Effectiveness Results ................................................................................21
5.0 VIMS Effectiveness Monitoring ............................................................................. 23
6.0 Future Tenants & Building Uses ............................................................................ 24
7.0 Reporting .................................................................................................................. 25

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Figures
Figure 1 Site Location Map
Figure 2 Site Map
Figure 3 Site Development Plan

Attachments

Attachment A Vapor Intrusion Assessment Data Summary (Excerpts)
Attachment B Vapor Intrusion Mitigation Design Drawings
Sheets VM-1, VM-1A, VM-2, VM-2A, and VM-3
Attachment C-1 VaporBlock 20 (VBP-20) Product Specification Sheets & Installation
Instructions
Attachment C-2 Drago Wrap Vapor Intrusion Barrier Product Specification Sheets &
Installation Instructions
Attachment C-3 Big Foot Slotted PVC Pipe Product Specification Sheet
Attachment C-4 Soil Gas Collector Mat Product Information and Installation Guide
Attachment C-5 Zurn Industries Floor Clean-out Product Specification Sheet
Attachment C-6 Empire Wind-Turbine Ventilator Specification Sheet
Attachment C-7 Wal-rich Corporation PVC Termination Screen

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Vapor Intrusion Mitigation Plan – Revision 2 Modera LoSo
Assistance League Charlotte, North Carolina H&H Job No. MLR-001
1.0 Introduction

On behalf of MCRT Carolinas, LLC (the Prospective Developer or PD), Hart & Hickman, PC
(H&H) has prepared this Vapor Intrusion Mitigation Plan (VIMP) for the Assistance League
Brownfields property (Brownfields Project No. 25050-21-060) located at 3405 South Tryon
Street in Charlotte, Mecklenburg County, North Carolina (Site). The Site is comprised of one
approximately 3.03-acre parcel of land (Mecklenburg County Parcel Identification No.
14702131) developed with an approximate 23,500 square foot commercial building. Remaining
portions of the Site include asphalt paved parking areas, wooded land, and grassy or landscaped
areas. The Site is located in a rapidly densifying area of the Lower Southend (LoSo)
neighborhood in close proximity to the LYNX Blue Line light rail and uptown Charlotte. A Site
location map is provided as Figure 1, and the Site and surrounding area are shown in Figure 2.

The Site was undeveloped land prior to construction of the existing Site building in 1991. The
Site building was originally occupied by Carolina Marking Services, Inc. until 2013. The Site
has been occupied by the Assistance League of Charlotte for use as a thrift store since that time.
The Site is located in a historically commercial and light industrial area of Charlotte.
Commercial and industrial operations in the Site area have historically included automotive
repair and gasoline service station facilities, a fire suppression business, various commercial
offices, sales and distribution businesses, a dental product manufacturing facility (former Pelton
& Crane), and a chemical manufacturing company (Hertron Chemical).

1.1 Previous Assessments
A Phase I Environmental Site Assessment (ESA) was completed for the Site by others in April
2021 as part of property transaction due diligence activities. Results of the Phase I ESA
identified potential environmental concerns in connection with the Site associated with
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groundwater impacts on off-Site upgradient sources including the former Pelton Crane facility
located adjacent to the southeast at 200 Clanton Road and potentially the former Hertron
Chemical property located adjacent to the south at 306 Clanton Road. To evaluate the potential
for impacts from off-Site sources, soil gas samples were collected for laboratory analysis by
others in May 2021. H&H understands results of the soil gas sampling indicated the presence of
several volatile organic compounds (VOCs).

The PD plans to redevelop the Site with a multi-family residential apartment building and
associated parking deck known as Modera LoSo. To address environmental concerns at the Site
associated with off-Site sources, the Site was entered into the North Carolina Department of
Environmental Quality (DEQ) Brownfields Program and received a letter of eligibility on
October 22, 2021. Due to time constraints associated with the property transaction process,
H&H completed Phase II ESA sampling activities at the Site in June 2021 to evaluate current
Site conditions and the potential for impacts associated with historical operations on nearby off-
Site properties. Because the Site had been entered into the DEQ Brownfields Program, the Phase
II ESA sampling approach was designed to be consistent with assessment activities typically
requested by the DEQ Brownfields Program.

The Phase II ESA included collection of soil, groundwater, and soil gas samples for laboratory
analysis. In addition, receptor survey activities were completed to obtain information about land
use, water supply, basements, underground utilities, drains, and surface water bodies in the
vicinity of the Site. Results of the assessment activities are documented in a Phase II ESA report
prepared by H&H dated August 12, 2021. Tabular summaries of previous assessment data and a
figure depicting the locations of previous samples are provided in Attachment A for ease of
reference. A brief summary of the Phase II ESA is provided below:

• Soil sample laboratory analytical results did not identify the presence of VOCs or
semi-VOCs (SVOCs) at concentrations above the DEQ Preliminary Soil Remediation
Goals (PSRGs). Metals concentrations detected in Site soil are consistent with naturally
occurring levels and are considered representative of background conditions.
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• Groundwater samples were collected in upgradient and downgradient locations to
evaluate the potential for impacts at the Site. Groundwater sample results indicated that
several organic compounds were detected at concentrations above the North Carolina 2L
Groundwater Quality Standards (2L Standards) and/or DEQ Division of Waste
Management (DWM) Vapor Intrusion Groundwater Screening Levels (GWSLs)
including tetrachloroethene (PCE), trichloroethene (TCE), 1,2-dichloropropane, cis-1,2-
dichloroethene, and vinyl chloride. Metals including arsenic, barium, total chromium,
lead, and mercury were detected in one or more groundwater sample collected at the Site.
Only total chromium was detected in one groundwater sample at a concentration above
the 2L Standard. No other organic or inorganic compounds were detected at
concentrations above the 2L Standards or GWSLs in Site groundwater.

• Exterior soil gas samples were collected at the Site to evaluate the potential for structural
vapor intrusion into the proposed apartment building. Soil gas sample laboratory
analytical results identified the compounds benzene, chloroform, ethylbenzene, and
naphthalene at concentrations above the DEQ DWM Residential Vapor Intrusion Sub-
Slab and Exterior Soil Gas Screening Levels (SGSLs) in one or more soil gas sample.
No other compounds including PCE or TCE were detected at concentrations above the
DEQ DWM SGSLs in soil gas samples collected at the Site.

As part of the Brownfields Agreement process, a data gap meeting was held with the DEQ
Brownfields Program on January 21, 2022. During the data gap meeting, DEQ requested
sub-slab soil gas samples within the existing building to further evaluate potential vapor
intrusion risks and to establish baseline sub-slab soil gas concentrations prior to redevelopment
of the Site. Additionally, DEQ requested collection of surface water and sediment samples from
a small stream located in the southern portion of the Site.

To address DEQ Brownfields Program requests for additional assessment, H&H prepared an
Additional Brownfields Assessment Work Plan (Work Plan) dated February 14, 2022. The
Work Plan received DEQ Brownfields approval in a letter dated February 15, 2022. H&H
completed Brownfields sub-slab soil gas, surface water, and sediment assessment activities at the
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Site in February 2022. The Brownfields assessment activities documented in a Brownfields
Assessment Report submitted under separate cover. Tabular summaries of previous assessment
data and a figure depicting the locations of previous samples are provided in Attachment A for
ease of reference. A brief summary of the Brownfields assessment activities is provided below:

• H&H collected four sub-slab soil gas samples within the existing Site building to further
evaluate the potential for structural vapor intrusion into the proposed apartment building,
and to establish baseline sub-slab soil gas concentrations. Sub-slab soil gas sample
laboratory analytical results indicate that naphthalene was detected at a concentration
above the DEQ DWM Residential Vapor Intrusion SGSL in one sample location. No
other VOCs were detected at concentrations above SGSLs in sub-slab soil gas samples
collected at the Site.

• Surface water sample laboratory analytical results indicate that low levels of several
organic compounds were detected at concentrations above laboratory method detection
limits in each sample collected from on-Site portions of the unnamed tributary. Only low
concentrations of TCE (up to 3.52 µg/L) were detected at concentrations above the 2B
Standard for Water Supply of 2.5 µg/L in the downstream sample location (SW-1). No
other organic compounds were detected at concentrations above the surface water
screening levels in samples collected at the Site. Note that the small stream located in the
southern portion of the Site is not classified for water supply and the Water Supply 2B
Standard was used as a conservative screening level for comparison purposes.

Naturally-occurring levels of barium were detected in each surface water sample
collected at the Site at concentrations below the surface water screening criteria. No
other metals were detected in surface water samples collected at the Site.

• Laboratory analytical results indicate that benzo(b)fluoranthene was detected at a
concentration above the above the DEQ Residential and Protection of Groundwater
PSRGs in the downstream duplicate sediment sample. No other organic compounds were
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detected at concentrations above the DEQ PSRGs in sediment samples collected at the
Site.

Naturally occurring levels of several metals were detected in sediment samples collected
at the Site. Only low levels of hexavalent chromium were detected at concentrations
above the Residential PSRG in sediment samples collected at the Site.

1.2 Vapor Intrusion Evaluation

The DEQ DWM Vapor Intrusion SGSLs used for comparison to the laboratory analytical results
are conservative and based upon a Target Cancer Risk (TCR) of 1 x 10-6 for potential
carcinogenic effects and a hazard quotient (HQ) of 0.2 for potential noncarcinogenic effects.
Vapor intrusion mitigation or additional assessment is not typically warranted if the calculated
cumulative LICR is 1 x 10-4 or less and the calculated cumulative noncarcinogenic HI is 1.0 or
less. Note that the HI is the sum of HQ values for each detected compound.

H&H utilized the DEQ Risk Calculator (January 2022) using recent and previous soil gas sample
data to further evaluate potential risks associated with compound concentrations detected in any
sub-slab or exterior soil gas sample collected at the Site to model Site-wide hypothetical “worst-
case” risks for the soil gas to indoor air pathway under a residential use scenario. Results of
cumulative residential use risk calculations indicate a Site-wide worst-case LICR of 1.3 x 10-5 for
potential carcinogenic risks and a HI of 0.46 for potential noncarcinogenic risks.

Site-wide cumulative risk calculator results confirm that the cumulative LICR is below the target
value of 1.0 x 10-4 and the cumulative HI is below the target value of 1.0 indicating there are no
potential vapor intrusion risks at unacceptable levels for the planned apartment building.
However, due to the presence of chlorinated solvents in Site groundwater and known chlorinated
solvent impacts associated with nearby off-Site properties, the PD has elected to proactively
install a vapor intrusion mitigation system for occupiable ground-level components of the
proposed apartment building out of an abundance of caution. Copies of the completed risk
calculators are provided in Attachment A.
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The proposed apartment development will consist of an eight-story residential multi-family
building with a total ground floor area of approximately 88,800 sq ft which is comprised of
enclosed occupiable floor space and a parking deck encompassing the majority of the ground
floor. The occupiable ground floor space is approximately 22,200 sq ft and is proposed to
contain residential units along the northeastern side and southern corner of the building and
amenity spaces (mail room, fitness center, bike storage and repair, and pet spa) in northwestern
and southeastern portions of the building. The second and third levels of the building will
generally consist of residential units, additional amenity spaces along the northern and
southeastern sides of the building, and continued interior parking garage. The fourth level will
consist of approximately 73,000 sq ft of occupiable space with no parking garage and
incorporate four outdoor courtyard spaces located between the residential units. The fifth to
seventh levels of the building will be comprised of residential units located outside of the
footprint of the lower-level outdoor courtyards.

According to the DEQ DWM Vapor Intrusion Guidance: “Risk-based screening is used to
identify sites or buildings likely to pose a health concern, to identify buildings that may warrant
immediate action, to help focus site-specific investigation activities or to provide support for
building mitigation and other risk management options including remediation.” In addition, this
VIMP was prepared to satisfy the standard vapor intrusion mitigation condition in the anticipated
Brownfields Agreement for the Site. Per the North Carolina Brownfields Property Reuse Act
130A-310.32, a prospective developer, with the assistance of H&H for this project, is to provide
DEQ with “information necessary to demonstrate that as a result of the implementation of the
brownfields agreement, the brownfields property will be suitable for the uses specified in the
agreement while fully protecting public health and the environment instead of being remediated
to unrestricted use standards.” It is in the context of these risk-based concepts that the H&H
professional engineer makes the following statement.

The vapor intrusion mitigation system (VIMS) detailed herein is designed to mitigate intrusion
of subsurface vapors into the subject building from known Brownfields Property contaminants in
a manner that is in accordance with the most recent and applicable guidelines including, but not
limited to, DWM Vapor Intrusion Guidance, Interstate Technology & Regulatory Council
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(ITRC) guidance, and American National Standards Institute (ANSI)/American Association of
Radon Scientists and Technologists (AARST) standards. The sealing professional engineer
below is satisfied that the design is fully protective of public health from known Brownfields
Property contaminants.

[SEAL]

Trinh DeSa NC PE #044470 Hart & Hickman, PC
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2.0 Design Basis

The VIMS design drawings are included in Attachment B as Sheets VM-1, VM-1A, VM-1B,
VM-1C, VM-1D, VM-1E, VM-2, VM-2A and VM-3 (dated October 20, 2022) will be used to
guide construction of the VIMS. To reduce the potential for structural vapor intrusion, the VIMS
will operate as a passive sub-slab venting system that includes a network of horizontal sub-slab
and vertical above-slab riser piping connected to wind-driven turbine ventilators installed above
the building roof to enhance the passive system. The proposed development plan includes one
eight story residential apartment building which will be constructed with a column supported
building.

An approximate 1,100 sq ft ground level pour-back area intended for commercial use is currently
proposed on the northwestern corner of the building. The pour-back area will contain a separate
riser and will be left without a concrete slab and remain unfinished to allow for future tenant
upfit including installation of sub-slab utilities. Further details regarding the measures to be
implemented for the pour-back area are included in this VIMP.

2.1 Base Course Layer and Vapor Barrier

The VIMS includes placement of a minimum 4-inch base course stone (gravel) layer consisting
of high permeability stone (washed #57 stone, or similar high permeability stone approved by the
design engineer certifying the VIMP) below the concrete slab of the building. A vapor barrier
(vapor liner) will be installed above the base course stone layer and directly beneath the slab.
Furthermore, vapor barrier compatible with proposed waterproofing materials will also be
installed around elevator pits and on vertical sub-grade retaining walls backfilled with soil and
that are located adjacent to enclosed or occupiable spaces. Horizontal collection piping network
will be installed within the base course stone layer below the ground floor slabs prior to
placement of the vapor barrier. The horizontal vapor collection piping is discussed further in
Section 2.2. below. The piping layouts are shown on the VIMS design drawings (Attachment
B).

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The vapor barrier will consist of Vaporblock® Plus 20 (VBP20) manufactured by Raven
Industries (Raven). As an alternative, Drago® Wrap Vapor Intrusion Barrier manufactured by
Stego® Industries (Stego) can also be installed. Vapor barriers will be installed per
manufacturer installation instruction and technical specifications for each vapor barrier product
are included in Attachment C. The liners will be installed over the base course stone layer or
applicable vertical sub-grade walls and footers to cover the areas shown on the design sheets.
Each vapor barrier manufacturer recommends select sealing agents (mastics, tapes, etc.) for their
product. In accordance with the manufacturer installation instructions, the use of alternative
vapor barrier products not approved by the manufacturers for sealing will not be used, unless
approved by the design engineer and specific manufacturer.

The exterior edges of the vapor barrier will be attached and sealed to building footings and
subsurface concrete features utilizing the tape specified in the manufacturer instructions. Seams
within the building footprint will have a minimum of 6-inches or 12-inches of overlap
(depending on the vapor barrier manufacturing specifications) and will be sealed with the tape
specified in the manufacturer instructions. If the vapor barrier is damaged, torn, or punctured
during installation, a patch will be installed by overlaying a piece of vapor barrier that is cut to
the approximate shape of the damaged area, and sized such that a minimum of 6-inches of patch
surrounds the damaged area. The seams of the patch will then be sealed using the manufacturer
recommended tape.

The residential units along the northeastern portion of the building will incorporate open-air
lightwells. The lightwells consist of an approximately 3 foot (ft) wide open-air space that does
not contain a roof or ceiling, and an outer retaining wall that extends from 4 ft to 6 ft below
grade. Vapor barrier is not warranted on the exterior portion of the lightwell retaining wall
because the lightwells are open-air spaces. Aside from the lightwells, there are several areas
along the exterior wall of the residential units where soil backfill behind the exterior walls is at a
higher elevation than the interior slab. Therefore, vapor barrier compatible with proposed
waterproofing materials will be installed along the vertical portions of the exterior wall where
this occurs as indicated in the VIMS design drawings.

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In areas where utility penetrations (i.e., piping, ducts, etc.) are present and the use of the tape
recommended by the manufacturer is not practical or deemed as “ineffective” by the design
engineer certifying the VIMP, an alternative sealant product specified by the vapor barrier
manufacturer can be used, such as Raven Pour-N-Seal™. Following successful installation of
the vapor barrier, the finished concrete slab will be placed directly on top of the sealed vapor
barrier to further seal the seams and penetrations. For the pour-back area, the vapor barrier will
be placed and sealed across the area following installation of sub-slab horizontal collection
piping. The vapor barrier will remain without concrete cover until a tenant is identified.

2.2 Horizontal Collection Piping and Vertical Riser Piping
Passive sub-slab venting will be accomplished using horizontal slotted or perforated collection
piping which will collect vapor from beneath the ground floor slabs and discharge the vapors
above the building roofline. Sub-slab piping will consist of 3-inch diameter Schedule 40 (SCH
40) PVC piping and fittings and above-slab piping will consist of 4-inch diameter SCH 40 PVC,
unless otherwise specified in the design drawings (Attachment B). Solid sections of VIMS
piping shall maintain a minimum 1% slope toward slotted sections to drain potential
condensation water. Product specifications for the sub-slab collection piping are provided in
Attachment C.

As an alternative to 3-inch diameter SCH 40 PVC horizontal piping, soil gas collector mat
manufactured by Radon Professional Discount Supply (Radon PDS) may be used for sub-slab
vapor collection piping. The Radon PDS soil gas collector mat is a polystyrene, plastic,
rectangular conduit with a geotextile fabric covering. The mat is 1-inch thick and 12-inches
wide, and is specifically designed for collecting soil gas from below a building. If used, the soil
gas collector mat will be connected to the proposed 4-inch diameter vertical risers and 3-inch
diameter footing crossings using Radon PDS-manufactured riser connection fittings. Product
specifications for the soil gas collector mat are provided in Attachment C.

In order to enhance the passive VIMS, Empire Model TV04SS (stainless steel) wind-driven
turbine ventilators (or design engineer approved alternative) will be installed on the discharge
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end of the 4-inch SCH 40 PVC vertical riser piping above the building roofline to further
promote air exhaust from the risers. Exhaust discharge locations must be a minimum of 2 ft
above the roofline and a minimum 10 ft from an operable opening (e.g., door or window) or air
intake into the building. Note that the exhaust locations on the roof depicted in the VIMS design
may be repositioned within the requirements specified above and pending approval by the design
engineer certifying the VIMP. Product specifications for the proposed turbine ventilators are
provided in Attachment C. Electrical junction boxes (120VAC, min 15-amp required) will be
installed on the roof in close proximity to riser exhaust discharges should connection of an
electrical (active) fan be warranted in the future.

2.3 Monitoring Points
Monitoring points constructed with 2-inch diameter SCH 40 PVC and a PVC termination screen
(see Attachment C) will be installed as part of the VIMS to conduct effectiveness testing (see
Section 4.0), including vacuum influence measurements, and for the collection of sub-slab vapor
samples for laboratory analysis. The monitoring point locations are shown on the VIMS design
drawings (Attachment B).

In general, monitoring points are placed at remotely distant locations from vertical riser piping
locations and in representative areas of the ground floor enclosed areas, including monitoring
points within stairwells. To limit disturbance to residents during future monitoring events, the
majority of the monitoring point access ports will be located in hallways, mechanical rooms, or
amenity spaces and protected by a floor clean-out style cover. The monitoring points in the
stairwells will generally be placed below stair landings to avoid being placed in the main
walkway/access routes for the building tenants.

In select areas, the monitoring point will terminate within an interior wall and will be accessible
with a wall access panel as shown in the drawings. Several monitoring points will be connected
to extended sub-slab horizontal pipes which place the intakes of the monitoring points below
occupied spaces. The extended monitoring points are expected to have no more than
approximately 6 ft of extension pipe. In order to reduce interference of VOCs from construction
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materials in future sub-slab vapor samples submitted for laboratory analysis, the monitoring
point components will be connected using threaded connections or approved low VOC
containing products (Section 2.4). Product specifications for the proposed floor cleanout covers
are provided in Attachment C. One temporary monitoring point, TMP-1, is proposed in the
eastern portion of the building near permanent monitoring points MP-2 and MP-3. Due to the
unit layouts and nearby lightwells, there is not a location to install a permanent monitoring point
that will allow for access without entering tenant units in this area. The temporary monitoring
point will allow for vacuum measurements during pilot testing within the tenant space to verify
connectivity of the sub-slab annular space. After pilot testing, and per approval by DEQ, the
temporary monitoring point will be abandoned prior to finishing activities. The point will be
abandoned by cutting off the PVC pipe below the concrete surface, filling in the pipe with an air-
tight sealant (e.g. Pour-N-Seal™), and then finishing the surface with concrete.

In the event that a monitoring point cannot be installed due to building component conflict or is
damaged/destroyed during construction, a replacement monitoring point can be constructed,
pending approval by the design engineer certifying the VIMP. The replacement point(s) shall
consist of one of the specified designs on Sheet VM-2A. DEQ will be consulted for approval in
advance if monitoring points are relocated from locations specified in the VIMP (i.e., if moved to
a location in a different mitigation area, section of slab, or tenant area). The specific types and
locations of monitoring points installed will be documented in as-built drawings.
2.4 General Installation Criteria

The VIMS installed components (e.g., vapor barrier, piping, monitoring points, etc.) shall be
protected by the installation contractor and sub-contractors throughout the project. Protective
measures (e.g., flagging, protective boards, etc.) shall be used as needed to prevent damage to the
VIMS components. For example, the monitoring points and riser duct piping must be capped
with a removable slip-cap or cover immediately following installation to prevent water and/or
debris from entering the VIMS, and vapor barrier shall be protected from punctures and tears
during Site work.

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In the commercial pour-back area, the space shall not be accessible by residents and will remain
secured until the tenant is undergoing upfit activities. If foot-traffic is expected in the
commercial tenant space prior to upfit activities, controls such as wooden boards and/or decking
will be placed in areas of foot-traffic. Temporary wooden boards and/or decking will also be
installed during tenant upfit activities to minimize damages to the vapor barrier from
construction workers. In addition, signage that indicates precautions should be taken while
working in the areas with exposed barriers will be posted in prominent locations in the areas of
tenant spaces.

Future tenant upfit and completion of ground-level components of the retail space will likely
include installation of sub-slab utilities within the gravel base. Utility installations will likely
include removal of certain sections of the vapor barrier as needed to place new sub-slab utility
conduits and slab penetrations, but such work is not expected to include notable trenching or
other major disturbance to Site soil. In addition, tenant utility installations are not expected to
interfere or disturb the VIMS horizontal or vertical piping network.

For each phase of construction (above and below slab), construction contractors and sub-
contractors shall use “low or no VOC” products and materials. Furthermore, the construction
contractors shall not use products containing the compounds PCE or TCE. Prior to submittal of
a VIMS Installation Completion Report, the construction contractor and sub-contractors shall be
directed to provide safety data sheets (SDSs) for products and materials used during
construction. SDSs provided by the contractor and sub-contractors will be included in the VIMS
Installation Completion Report.

The proposed building footprint comprises the majority of the site property boundary (Figure 3)
and the entire footprint will contain the VIMS. In addition, the individual utilities trenches
below the building footprint are proposed to be backfilled with compacted soils that will reduce
or eliminate vapor migration, and not transmissive backfill layers like stone or sand. As such,
utility trench dams that are sometimes warranted to reduce the potential for vapor migration
along transmissive backfill layers from areas of elevated contamination to areas of lower
containment are not warranted based on the specific site conditions and layout.
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3.0 Quality Assurance / Quality Control
For quality assurance and quality control (QA/QC) purposes, inspections will be conducted
during each phase of the VIMS installation. The components that require inspection are outlined
below:
(1) Inspection of the base course stone layer, sub-slab piping layout, and monitoring points
prior to installing the vapor barrier;
(2) Inspection of the vapor barrier prior to pouring concrete or backfilling applicable sub-
grade vertical walls;
(3) Inspection of above-grade vertical riser piping; and
(4) Inspection of wind ventilators and riser pipe connections.

In addition to inspection of the vapor barrier, smoke testing of select areas of the vapor barrier
may be conducted per direction of the design engineer prior to the installation of concrete to
confirm that the vapor barrier has been adequately sealed. The select areas may include areas
with multiple close penetrations or conduits, or areas where multiple vapor barrier seams are
located. Breaches in the vapor barrier identified by visible smoke will be repaired by the
installation contractor during smoke testing activities. Each component of the VIMS shall be
inspected and approved by the design engineer, or the engineer’s designee, prior to being
covered.

Additional inspections will be conducted if the system(s) are activated to verify electric fans (if
installed) are functioning properly. Each inspection and smoke testing (if required) will be
performed by, or under direction of, the design engineer certifying the VIMP. Inspections will
be combined, when possible, depending on construction sequencing and schedule. The
inspections will include field logs and photographs for each section of slab. Locations where
multiple penetrations are present and where products such as Pour-N-Seal™ are used will be
photographed and noted on the field logs. To minimize potential preferential pathways through
the slab, contractors will not use hollow piping to support utilities in preparation for concrete
pours. Contractors will be instructed to remove hollow piping observed during the field
inspections. The contractor shall notify the engineer certifying the VIMP, or his/her designee,
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with a minimum 48-hour notice prior to a planned inspection, and H&H will provide a
subsequent 48-hour notice to DEQ for the pending inspection.

Additional Pour-Back Area Measures
The current property manager will be instructed to report activities in the pour-back area (Future
Tenant Upfit) that impact or may impact the vapor barrier to the design engineer. If the vapor
barrier damaged at any time before the pouring of concrete floor slab, the vapor barrier must be
repaired in accordance with installation guidelines provided in Attachment C and inspected by
the design engineer. If repairs are made, a description of the repairs will be reported to DEQ
within 30 days of completion.

The PD will also be instructed to contact the design engineer to perform the inspections
described above to confirm the VIMS is not impacted or modified during the tenant upfit
activities. If notable changes to the VIMS piping are needed for tenant upfit, then the changes or
modifications will be reviewed by the design engineer and submitted to DEQ for approval prior
to implementation. The concrete slab will not be poured in the tenant space until VIMS
components have been repaired and restored to the satisfaction of the design engineer and in
accordance with the DEQ-approved VIMP and approved addendums (if warranted). Specific
VIMS inspections will include the activities mentioned above.

In addition, after tenant upfit activities are complete, H&H will perform additional effectiveness
testing including an influence test (see Section 4.0) to confirm adequate sub-slab communication
and adequate depressurization remain achievable within this area.

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4.0 VIMS Effectiveness Testing
4.1 Influence Testing

Post-installation (pre-occupancy) influence testing will be conducted on each VIMS treatment
area to evaluate vacuum communication across the slab and confirm sufficient depressurization
can be obtained should electric fans be needed in the future. Influence testing will be conducted
for each treatment area following installation of the horizontal collection piping, placement of
the vapor liner, and completion of concrete slab pours.

For system influence testing, one or more vapor extraction fans will be attached directly to
vertical riser piping for the section of the slab being evaluated. Pressure differential will be
measured at extraction fan locations and sub-slab vacuum levels will be measured at each
monitoring point location. A pressure differential resulting in depressurization below the slab of
at least 4 pascals (approximately 0.016 inches of water column) at remote distances from riser
location in each VIMS treatment area is considered sufficient evidence of sub-slab VIMS
influence. Vacuum influence testing results will be included in the VIMS installation completion
report. If the influence testing results indicate that modifications to the VIMS are needed to
achieve sufficient sub-slab depressurization, H&H will notify DEQ of the modifications prior to
submittal of a VIMS installation completion report.

The pour-back area in the commercial space will also be included in the pre-occupancy influence
testing. Influence testing will be conducted following the installation of vapor barrier prior to the
pouring of concrete slab. During initial construction, the riser located in the pour-back area will
be installed so that testing may be conducted for the entire building. Furthermore, following
tenant upfit activities (Section 3.0), additional influence testing of the completed pour-back areas
will be conducted. The initial influence testing results in the pour-back areas will be reported to
DEQ in the VIMS Installation Completion report, and subsequent testing results will be reported
to DEQ in tenant upfit completion addendum reports.
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4.2 Pre-Occupancy Analytical Sampling

As described in Section 1.0, PCE and TCE were detected in groundwater samples collected at
the Site, but these compounds were not detected in soil gas samples. Following VIMS
installation, but prior to occupancy of the building(s), analytical vapor sampling (which will
include the collection of concurrent sub-slab soil gas samples and indoor air samples) will be
conducted across the proposed Site building footprint to evaluate the potential for structural
vapor intrusion.

Sub-Slab Soil Gas
The sub-slab soil gas samples will be collected from select monitoring points in locations
generally separated by slab footings and at the furthest extents of the VIMS treatment areas.
Sub-slab soil gas sample analytical results will be used to evaluate potential risks to future
occupants of the building. A total of seven sub-slab vapor samples are proposed across the
building footprint at the monitoring point locations MP-2, MP-5, MP-8, MP-11, MP-13, MP-15,
and MP-18. One duplicate sub-slab soil vapor sample using a laboratory-supplied “T” fitting for
laboratory QA/QC purposes will be collected during each sampling event.

Prior to sample collection, leak tests will be performed at each sub-slab soil gas sample location.
A shroud will be constructed around the monitoring point and sub-slab soil gas sampling train
and sample canister. Air within the shroud will be flooded with helium gas, and helium
concentrations will be measured and maintained using a calibrated helium gas detector. With
helium concentrations within the shroud maintained, sub-slab soil gas will be purged from the
sampling point with an air pump and collected into a Tedlar bag. The calibrated helium gas
detector will be used to measure helium concentrations within Tedlar bag sample to confirm
concentrations are less than 10% of the concentration maintained within the shroud. A minimum
of three sample train volumes will be purged from each point prior to and during the leak testing
activities.

The sub-slab soil gas samples will be collected over an approximate 10-minute period using
laboratory supplied batch-certified 1-liter or 1.4-liter Summa canisters and laboratory supplied
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flow regulators calibrated with an approximate flow rate of 100 milliliters per minute. The
vacuum in the Summa canisters will be measured at the start and end of the sampling event, and
will be recorded by sampling personnel. The vacuum in each canister at the conclusion of the
sampling event shall remain above 0 inches of mercury (inHg), with a target vacuum of
approximately 5 inHg. H&H understands that, analytical results for a sample will not be
accepted by DEQ if internal vacuum for that sample reaches 0 inHg.

The samples will be submitted to a qualified laboratory under standard chain of custody
protocols for analysis of full-list VOCs, including naphthalene, by EPA Method TO-15. The
analytical laboratory will be instructed to report vacuum measurements as received at the lab and
J-flag concentrations for each sample. In addition, H&H will request that the laboratory report
compound concentrations to the lower of the laboratory method detection limits or to the extent
possible, the DEQ DWM Residential SGSLs.

Indoor Air Sampling
Nine indoor air samples (IAS-1 through IAS-9) will be collected as a conservative measure
within ground floor areas with living or retail spaces including two samples from each area with
ground floor living spaces, and one sample from the Pet Spa. In the event that sub-slab soil gas
sample results collected from the Stair 3 VIMS treatment area indicate unacceptable risk levels
or PCE and/or TCE are detected, or as otherwise approved by DEQ, one additional indoor air
sample will be collected in the vicinity of the subject sub-slab soil gas sample. Indoor air
sampling activities will be conducted concurrently with sub-slab soil gas sampling and in
accordance with the DWM VI Guidance. Proposed indoor air sampling locations are depicted on
sheet VM-1 of Attachment B.

The building is intended to be occupied shortly following completion and initialization of the
HVAC system. Therefore, the indoor air sampling events, will be conducted following
construction and installation of the VIMS and fully enclosed building including a minimum of
two weeks with operational ventilators, but may be conducted prior to initialization of the HVAC
system(s). The DEQ Vapor Intrusion Guidance, dated March 2018, indicates “higher indoor air
concentrations might be expected when a building is sealed up and the HVAC is not running”,
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and “worse case conditions may also be considered when the building is closed up and the
HVAC system is not running.” Furthermore, HVAC equipment is typically not able to be
activated until approximately a few weeks prior to closing due to the timing of the Mecklenburg
County approval for installation of the gas and electric meters. Thus, conducting indoor air
sampling with the building enclosed, but prior to HVAC operation, may allow for a more
conservative indoor air sampling approach and will allow for time to conduct the pre-occupancy
sampling and reporting as required in this Plan prior to closing. In addition, HVAC equipment
isn’t operational until finishing activities including installation of flooring, cabinets, sealants,
paints, industrial cleaning, etc. are being conducted. Off-gassing of VOCs from these building
finishing materials and products can impact the indoor air concentrations and make it more
difficult to evaluate the potential for vapor intrusion. Thus, sampling ahead of HVAC operating
and finishing activities is proposed.

The indoor air samples will be collected using individually-certified 6-liter stainless steel Summa
canisters connected to in-line flow controllers equipped with a vacuum gauge. The flow
controllers will be set by the laboratory to allow the samples to be collected over an
approximately 24-hour period for a residential use scenario. A laboratory-supplied 3-foot long
sampling cane, or similar methods, will be connected to the flow controller so that the sample
intake point is positioned approximately 5 ft above grade (typical breathing zone height) when
the sample canister is set on its base. In addition, during each indoor air sampling event, one
duplicate sample for laboratory QA/QC and one background sample from an ambient air upwind
locations will be collected. Prior to and after the indoor and background air samples are
collected, vacuum in the canisters will be measured using a laboratory-supplied vacuum gauge
and recorded by sampling personnel. A vacuum above 0 inHg and ideally around 5 inHg will be
maintained within the canisters at the conclusion of the sampling event.

The starting and ending vacuum in each canister will be recorded on the sample chain-of-
custody. Periodic checks will be conducted by sampling personnel to monitor the pressure
within the Summa canisters during sampling to ensure adequate sample volume is collected. The
sample canisters will then be labeled and shipped under standard chain-of custody protocols a
qualified laboratory for analysis of select VOCs by EPA Method TO-15. The select compound
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list will consist of compounds detected during previous environmental assessments described in
Section 1 and Attachment A. The analytical laboratory will be instructed to report vacuum
measurements at receipt and J-flag concentrations for each sample. H&H will request that the
laboratory report compound concentrations to the lower of the laboratory method detection limits
or to the extent possible, the DEQ DWM Residential Vapor Intrusion Indoor Air Screening
Levels (IASLs). In addition, an Indoor Air Building Survey form (Appendix C of the DWM VI
Guidance) will be completed for each sampling event.

New construction materials such as paint, caulk, carpet, mastics, etc., which could be sources of
VOCs in indoor air, may cause interference with Site-specific compounds of concern during
indoor air sampling. As previously noted, the construction contractors will be requested to
provide SDSs for materials used during construction which will be submitted to DEQ, if needed
to further evaluate sub-slab and indoor air data. Contractors will be instructed not to use
materials which contain PCE or TCE. They will also be instructed to not use products with the
daughter products of PCE/TCE, including 1,2-cis-dichloroethene, 1,2-trans-dichloroethene, and
vinyl chloride, where possible. Note, polyvinyl chloride (PVC) is allowable as it is a low-
volatile polymer of vinyl chloride and a component in widespread building materials that are
required for building construction, such as PVC piping and electrical components. Further, there
is still potential for construction materials to contain some amount of these compounds from
residual use of products which contain chlorinated solvents during processes to manufacture
various building materials (i.e., form release) that may not be documented on SDSs or in product
descriptions.

Based upon the results of the indoor air sampling, H&H will make recommendations in general
accordance with the DWM VI Guidance. It is anticipated that the recommendations will consist
of one of the following:

• The VIMS is effective, and no further sampling of indoor air is warranted (per the DWM
VI Guidance, in the case where calculated cumulative risks are 1x10-4 or less for potential
carcinogenic risks and a hazard index of 1.0 or less for potential non-carcinogenic risks).

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• Additional indoor air sampling is warranted to confirm that the VIMS is effective (per the
DWM VI Guidance, in the case where calculated cumulative risks are greater than 1x10-4
for potential carcinogenic risks or above a hazard index of 1.0 for potential non-
carcinogenic risks as a result of vapor intrusion and not as a result of off-gassing from
building materials). Active fans may be installed as part of the VIMS and follow-up sub-
slab soil gas and indoor air sampling will be performed after installation of the fans
should results of confirmation indoor air samples indicate that passive treatment is
inadequate.

4.3 VIMS Effectiveness Results

The results and analysis of the sub-slab soil gas sampling will be submitted to DEQ with the
final VIMS installation completion report (discussed in Section 7.0). After receipt of the sub-
slab soil gas and indoor air sample analytical results, H&H will use the most recent version of
the DEQ Risk Calculator to evaluate cumulative potential vapor intrusion risks under a
residential scenario for each sample location or VIMS treatment area, whichever is most
applicable. H&H will consider the VIMS effective if the calculated cumulative risks are 1x10-4
or less for potential carcinogenic risks and a Hazard Index of 1.0 or less for potential non-
carcinogenic risks, in accordance with DEQ risk calculator thresholds. H&H acknowledges that
DEQ may still request additional sampling if Site contaminants of concern are elevated, even if
the risk calculations are acceptable.

In the event that calculated cumulative risks for a residential scenario based on sub-slab soil gas
sample data or indoor air data indicating concentrations resulting from structural vapor intrusion
are greater than 1x10-4 for potential carcinogenic risks and/or above a Hazard Index of 1.0 for
potential non-carcinogenic risks, confirmation sub-slab soil gas or additional indoor air samples
will be collected for laboratory analysis from the area of potential concern. In the event that an
additional round of samples indicates acceptable risk levels are met, no further pre-occupancy
sampling will be conducted with prior written DEQ approval. In the event that calculated
cumulative risks for a residential scenario continue to exceed acceptable levels for potential
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carcinogenic risks and/or potential non-carcinogenic risks due to structural vapor intrusion,
considerations will be made to convert the system from a passive system to an active system.
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5.0 VIMS Effectiveness Monitoring

The VIMS is proposed as a passive system which will include vapor extraction through sub-slab
collection piping and solid risers that discharge sub-slab vapors above the roofline. The passive
system will be enhanced with wind-turbine ventilators to promote air exhaust from the sub-slab.
As such, differential pressure monitoring is not anticipated. If data indicates the an active system
with electric fans is warranted, mitigation system modifications and plans for additional VIMS
efficacy testing will be submitted to the DEQ Brownfields Program for approval prior to
implementation. The specific electric fans to be used will be selected by the design engineer
based on the results of the influence testing discussed in Section 4.0.

Post-occupancy VIMS effectiveness monitoring will include annual sub-slab soil gas sampling
and indoor air sampling at the locations indicated in Section 4.0 for two years following
completion of the initial pre-occupancy sampling event. The sampling will be conducted using
the procedures described in this VIMP. A reduced sampling scope for the post-occupancy
sampling may be requested based on the results of the pre-occupancy sampling event and
submitted to DEQ in the VIMS Installation Completion Report for review and approval. If the
annual sampling results indicate consistent or decreasing concentrations within acceptable risk
levels for the two-year period of annual sampling activities, a request to modify or terminate
sampling will be submitted for DEQ approval. No changes to the sampling frequency or
termination of sampling will be implemented until written approval is obtained from DEQ. The
first annual post-occupancy sampling event will take place approximately one-year after the start
of occupancy of the building.

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6.0 Future Tenants & Building Uses
The future use of the proposed Site building includes multi-family residential use. After
occupancy of the Site building, VIMS maintenance and upkeep will be the responsibility of the
building owner or property management group. If vapor mitigation components are damaged or
need to be altered for building renovations, the building’s owners or management will be
instructed to contact appropriate parties to conduct the appropriate maintenance.

A North Carolina licensed Professional Engineer (NC PE) will be contacted to oversee or inspect
the modifications or repair activities, and a report shall be submitted to DEQ detailing the repairs
or alterations. To aid in identification of the vapor mitigation piping, the piping will be labeled
by the Site contractors with stickers adhered to a smooth surface or permanent labels which read,
“Vapor Mitigation – Contact Maintenance”, or similar language, on accessible piping at intervals
of no greater than 10-linear feet. Similar labels will also be affixed near the exhaust discharge on
the roof. VIMS labeling will be inspected by H&H prior to covering risers or building
occupancy.

As part of the standard annual Land Use Restriction Update submittal that will be required as
part of the pending Brownfields Agreement, the building owner or property management group
should complete a visual inspection of the exposed parts of the system including, but not limited
to, the vertical risers and ventilators on the roof and the monitoring points. H&H recommends
annual inspections be documented and kept on record to be provided to DEQ upon request.
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7.0 Reporting
A VIMS Installation Completion Report (sealed by a NC PE) documenting installation activities
associated with the VIMS will be submitted to DEQ following confirmation that the mitigation
system is installed and effectively mitigating potential vapor intrusion risks to building
occupants. The report will include a summary of VIMS installation activities such as
representative photographs and as-built drawings, QA/QC measures, SDSs of materials used in
construction, VIMS effectiveness testing results, and inspection documents. The report will also
include a statement provided by the design engineer as to whether the VIMS was installed in
accordance with the DEQ approved VIMP and is protective of public health as defined in
Section 1.0, and as evidenced by the VIMS inspections performed by the engineer or designee of
the design engineer, results of the influence testing, results of the analytical testing, and QA/QC
measures as described in this VIMP. Deviations from the approved design will be provided in
the report.

The anticipated Brownfields Agreement is anticipated to include standard land use restrictions
that indicate the building(s) shall not be occupied until DEQ provides written compliance
approval for the installation and performance of the VIMS as documented in the installation
report. However, we understand that DEQ may provide conditional approval with submittal of a
data summary package in lieu of the full VIMS Installation Completion Report if warranted
based on timing of the proposed building occupancy date and report review times. No
occupancy of the building can occur without prior written approval of DEQ, with the decision
based on the pre-occupancy VIMS efficacy sampling results.

After each annual post-occupancy sampling event, a report will be submitted to DEQ to
document the sampling activities and results.

USGS The National Map: National Boundaries Dataset, 3DEP ElevationProgram, Geographic Names Information System, National HydrographyDataset, National Land Cover Database, National Structures Dataset,and National Transportation Dataset; USGS Global Ecosystems; U.S.Census Bureau TIGER/Line data; USFS Road Data; Natural Earth Data;U.S. Department of State Humanitarian Information Unit; and NOAANational Centers for Environmental Information, U.S. Coastal ReliefModel. Data refreshed May, 2020.
SITE LOCATION MAP
ASSISTANCE LEAGUE3405 S. TRYON STREET CHARLOTTE, NORTH CAROLINA
DATE: 10-20-22
JOB NO: MLR-001
REVISION NO: 0
FIGURE. 1
2923 South Tryon Street - Suite 100Charlotte, North Carolina 28203704-586-0007 (p) 704-586-0373 (f)License # C-1269 / # C-245 Geology
TITLE
PROJECT
0 2,000 4,000
SCALE IN FEET
Path: \\HHFS01\Redirectedfolders\sperry\My Documents\ArcGIS\PROJECTS\MLR-001\Figure-1.mxdN
U.S.G.S. QUADRANGLE MAP
CHARLOTTE EAST, NORTH CAROLINA 2013CHARLOTTE WEST, NORTH CAROLINA 2013
QUADRANGLE
7.5 MINUTE SERIES (TOPOGRAPHIC)
SITE
SITE MAP
ASSISTANCE LEAGUE
3405 SOUTH TRYON STREETCHARLOTTE, NORTH CAROLINA
DATE: 10/20/22
JOB NO: MLR-001
REVISION NO: 0
FIGURE. 2
2923 South Tryon Street - Suite 100Charlotte, North Carolina 28203704-586-0007 (p) 704-586-0373 (f)License # C-1269 / # C-245 Geology
TITLE
PROJECT
0 75 150
SCALE IN FEET
Path: \\HHFS01\Redirectedfolders\sperry\My Documents\ArcGIS\PROJECTS\MLR-001\Figure 2 - Site Map 033122.mxdN
1. PARCEL DATA AND AERIAL IMAGERY OBTAINED FROMMECKLENBURG COUNTY GIS, 2021.
2. NCBP = NORTH CAROLINA BROWNFIELDS PROJECTS. TRYON STREETCLANT
O
N

R
O
A
D
LEGEND
BROWNFIELDS PROPERTY BOUNDARY
PARCEL BOUNDARY
STREAM
CULVERT (TYP.)
NOTES:
PELTON CRANEBROWNFIELDS PROPERTY(NCBP 09034-05-060)COMMERCIALPROPERTIES
MULTI-TENANTCOMMERCIAL
CHARLOTTE LAB SCHOOL(3325 S. TRYON STREET)
OUTBOX SELF STORAGE(200 CLANTON ROAD)
COMMERCIAL PROPERTY(300 CLANTON ROAD)
HERTRON INTERNATIONALBROWNFIELDS PROPERTY(NCBP 23030-19-060)
SITE DEVELOPMENT PLAN
ASSISTANCE LEAGUE
3405 SOUTH TRYON STREETCHARLOTTE, NORTH CAROLINA
DATE: 10-20-22
JOB NO: MLR-001
REVISION NO: 0
FIGURE. 3
2923 South Tryon Street - Suite 100Charlotte, North Carolina 28203704-586-0007 (p) 704-586-0373 (f)License # C-1269 / # C-245 Geology
TITLE
PROJECT
0 75 150
SCALE IN FEET
Path: \\HHFS01\Redirectedfolders\sperry\My Documents\ArcGIS\PROJECTS\MLR-001\Figure 3 - Development Plan.mxdN
NOTES:
1. PARCEL DATA AND AERIAL IMAGERY OBTAINED FROMMECKLENBURG COUNTY GIS, 2021.S. TRYON STREETCLANT
O
N

R
O
A
D
LEGEND
BROWNFIELDS PROPERTY BOUNDARY
PARCEL BOUNDARY
STREAM
PROPOSED RESIDENTIAL / AMENITY
PROPOSED PARKING GARAGE
CULVERT (TYP.)
PELTON CRANEBROWNFIELDS PROPERTY(NCBP 09034-05-060)COMMERCIALPROPERTIES
MULTI-TENANTCOMMERCIAL
CHARLOTTE LAB SCHOOL(3325 S. TRYON STREET)
OUTBOX SELF STORAGE(200 CLANTON ROAD)
COMMERCIAL PROPERTY(300 CLANTON ROAD)
HERTRON INTERNATIONALBROWNFIELDS PROPERTY(NCBP 23030-19-060)

Attachment A

Vapor Intrusion Assessment Data Summary (Excerpts)
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SW-1/SED-1
SW-2/SED-2
SSV-1
SSV-2 SSV-3
SSV-4
SG-2
SG-3
SG-4
SG-1
SG-3*
SG-5*
SG-6*
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SG-1*
SB-4/TMW-4
SB-3/TMW-3
SB-1/TMW-1
SB-2/TMW-2
SB-5
COMPREHENSIVE SAMPLE LOCATION MAP
ASSISTANCE LEAGUE
3405 SOUTH TRYON STREET
CHARLOTTE, NORTH CAROLINA
DATE: 3/28/22
JOB NO: MLR-001
REVISION NO: 0
FIGURE. 3
2923 South Tryon Street - Suite 100Charlotte, North Carolina 28203704-586-0007 (p) 704-586-0373 (f)License # C-1269 / # C-245 Geology
TITLE
PROJECT
0 75 150
SCALE IN FEET
Path: \\HHFS01\Redirectedfolders\sperry\My Documents\ArcGIS\PROJECTS\MLR-001\Figure 3 - Comprehensive Sample Map.mxdN
1. PARCEL DATA AND AERIAL IMAGERY OBTAINED FROM
MECKLENBURG COUNTY GIS, 2021.
2. SOIL GAS SAMPLES SG-1 THROUGH SG-4 AND SSV-1
THROUGH SSV-4 WERE INSTALLED AND SAMPLED
BY H&H IN 2021 AND 2022.
3. SEDIMENT SAMPLES SED-1 AND SED-2 WERE
COLLECTED BY H&H ON 2/6/2022.
4. TEMPORARY MONITORING WELLS TMW-1 THROUGH
TMW-4 WERE INSTALLED BY H&H IN JUNE 2021.
5. GROUNDWATER MONITORING WELLS MW-3, MW-4,
MW-14, MW-16, MW-20, MW-21, MW-23, MW-37, AND
MW-57 WERE MOST RECENTLY SAMPLED BY OTHERS
IN 2019 AND 2020.
6. * = SAMPLES WERE COLLECTED BY ECS SOUTHEAST,
LLP ON 5/17/2021.
7. NCBP = NORTH CAROLINA BROWNFIELDS PROJECTS. TRYON STREETCLANT
O
N

R
O
A
D
LEGEND
BROWNFIELDS PROPERTY BOUNDARY
PARCEL BOUNDARY
STREAM
PROPOSED RESIDENTIAL / AMENITY
PROPOSED PARKING GARAGE
!(SOIL BORING LOCATION
!!+Í CO-LOCATED SOIL BORING AND TEMPORARY
MONITORING WELL LOCATION
#*Á SOIL GAS SAMPLE LOCATION
")Á SUB-SLAB VAPOR POINT LOCATION
#*CO-LOCATED SURFACE WATER AND SEDIMENT
SAMPLE LOCATION
!´Ñ SHALLOW MONITORING WELL
!³OVERBURDEN MONITORING WELL
!³DEEP MONITORING WELL
CULVERT (TYP.)
NOTES:
PELTON CRANE
BROWNFIELDS PROPERTY
(NCBP 09034-05-060)COMMERCIAL
PROPERTIES
MULTI-TENANT
COMMERCIAL
CHARLOTTE LAB SCHOOL
(3325 S. TRYON STREET)
OUTBOX SELF STORAGE
(200 CLANTON ROAD)
COMMERCIAL PROPERTY
(300 CLANTON ROAD)
HERTRON INTERNATIONAL
BROWNFIELDS PROPERTY
(NCBP 23030-19-060)
Table 1Summary of Soil Analytical DataAssistance LeagueCharlotte, North CarolinaH&H Job No. MLR-001 Sample IDSB-1 SB-3 SB-4 SB-5 Sample Date Depth (ft bgs)1-3 2-4 0-2 0-2 Range Mean Range Mean UnitsVOCs (8260D)Acetone0.003 J 0.008 J 0.006 J 0.013 J 0.004 J0.02214,000 210,000--------Methyl Ethyl Ketone (MEK)<0.0008 <0.0008 <0.00080.0008 J<0.00080.001 J 5,500 40,000-- -- -- --Toluene<0.0008 <0.0008 <0.00080.001 J<0.00090.0009 J 990 9,700-- -- -- --SVOCs (8270E)ALL BDL ALL BDL ALL BDL ALL BDL ALL BDL ALL BDL-- -- -- -- -- --Metals (6020B/7471B/7199)Arsenic0.490 J2.13 1.80 1.64 1.39 2.010.68 3.0 <1.9 - 3.4 2.651.0 - 18 4.8Barium18719.3 28.7 46.9 29.0 43.53,100 47,000 NS NS50-1,000 356Cadmium<0.0657<0.0647 <0.0647 <0.0625 <0.0716 <0.059814 200 0.12 - <0.64 0.381.0 - 10 4.3Chromium (Total)18554.9 35.0 30.7 22.3 126NS NS 9.7 - 87.8 48.757.0 - 300 65Hexavalent Chromium0.33 J<0.240.72 J 0.44 J 0.36 J 0.51 J0.31 6.5 <0.21 - 0.73 0.728NS NSTrivalent Chromium184.6754.9 34.28 30.26 21.94 125.4923,000 350,000 9.7 - 87.1 48.02NS NSLead1.327.56 8.09 10.3 5.44 34.5400 800 8.3 - 170 89.15ND - 50 16Mercury<0.01440.0622 0.0355 0.0300 J 0.0246 J 0.0253 J2.3 9.7 <0.027 - 0.17 0.0990.03 - 0.52 0.121Selenium1.87 J<1.06 <1.06 <1.021.20 J 1.09 J78 1,200 <1.2 - 2.0 1.6<0.1 - 0.8 0.42Silver<0.0490<0.0482 <0.0482 <0.0466 <0.0533 <0.044678 1,200 0.013 - <0.15 0.0815ND - 5.0 NSNotes:2) Background metals data collected from nearby North Carolina Brownfields Projects (NCBP) Belton Homes (NCBP No. 20062-16-060) and Pepsi Bottling (NCBP No. 190587-15-060).Compounds are reported to the laboratory method detection limit. With the exception of metals, only constituents detected in at least one sample are shown in the table above.Soil concentrations are reported in milligrams per kilogram (mg/kg).Bold values indicate compound exceeds the Residential PSRG and background concentrations in the case of metals. VOCs = volatile organic compounds; SVOCs = semi-volatile organic compounds; ft bgs = feet below ground surface; -- = not applicable; BDL = below laboratory method detection limit; NS = not specifiedJ = Compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated concentration. mg/kg1) North Carolina Department of Environmental Quality (DEQ) Inactive Hazardous Sites Branch (IHSB) Preliminary Soil Remediation Goals (PSRGs) dated January 2022. SB-2 / SB-DUP3) Range & mean values of background metals for North Carolina soils taken from Elements in North American Soils by Dragun and Chekiri, 2005. Cd and Ag concentrations were taken from Southeastern & Conterminous US soils.Laboratory analytical methods are shown in parentheses.0-26/24/2021Local Background Metals in Soil (2) Regional Background Metals in Soil (3)Residential PSRGs (1)Industrial/Commercial PSRGs (1)Screening Criteria https://harthick.sharepoint.com/sites/MasterFiles‐1/Shared Documents/AAA‐Master Projects/Mill Creek ‐ MLR/MLR‐001 Assistance League/EMP/Data Tables_Assistance League.xlsx3/24/2022Table 1 (Page 1 of 1)Hart & Hickman, PC
Table 2Summary of Groundwater Analytical DataAssistance LeagueCharlotte, North CarolinaH&H Job No. MLR-001Evaluation AreaSample IDTMW-1 TMW-4 MW-14 TMW-2 MW-3 MW-4Sample Date8/14/2019UnitsVOCs (8260D)Acetone<1.804.23 J<25.0<1.808.58 10.3<25.0 <25.06,000 NE NEBenzene<0.180 <0.180<1.0<0.1800.405 J 0.413 J<1.0 <1.01 1.6 6.9Chloroethane <0.430 <0.430<1.0<0.430 <0.430 <0.4302.8 2.6 3,000 1,800 7,700Chloroform<0.2200.351 J<5.0<0.2200.415 J 0.466 J<5.0 <5.070 0.81 3.61,1-Dichloroethane<0.240 <0.240<1.0<0.2401.67 1.84 4.1 5.5 6 7.6 331,2-Dichloroethene (total)NA NA<1.0NA NA NA46.5 140 NE NE NE1,1-Dichloroethene<0.1502.69<1.0<0.15014.415.3<1.01.435039160cis-1,2-Dichloroethene<0.2002.38NA<0.20069.774.7NANA70NSNStrans-1,2-Dichloroethene<0.180<0.180NA<0.1800.5360.536NANA10022911,2-Dichloropropane<0.190<0.190<1.0<0.1901.421.48<1.0<1.00.66.629Methyl Ethyl Ketone (MEK)<0.710<0.710<5.0<0.710<0.7101.48 J<5.0<5.04,000450,0001,900,000Tetrachloroethene<0.2201.94<1.0<0.2201.891.88<1.0<1.00.71248Toluene <0.220<0.220<1.0<0.220<0.220<0.220<1.0<1.06003,80016,000Trichloroethene<0.18027.92.9<0.1801781707.261.6314.4Vinyl Chloride<0.170<0.170<1.0<0.1701.171.2127.39.10.030.152.5SVOCs (8270E)ALL BDLALL BDLNAALL BDLALL BDLALL BDLNANA------Metals (6020B/7470)Arsenic0.193 J 0.260 JNA <0.1700.307 J 0.291 JNA NA10 ----Barium168 70.9NA143 199 206NA NA700 ----Cadmium<0.160 <0.160 NA <0.160 <0.160 <0.160 NA NA2----Chromium (total)18.21.59 JNA3.38 7.37 6.93NA NA10 ----Lead0.393 J<0.260 NA <0.260 <0.260 <0.260 NA NA15 ----Mercury<0.00007 <0.00007 NA0.00010 J<0.00007 <0.00007 NA NA1 0.18 0.75Selenium<0.740 <0.740 NA <0.740 <0.740 <0.740 NA NA20 ----Silver<0.110 <0.110 NA <0.110 <0.110 <0.110 NA NA20 ----Notes:1) North Carolina Department of Environmental Quality (DEQ) 15A NCAC 02L.0202 Groundwater Standards (2L Standards) dated April 2013.2) DEQ Division of Waste Management (DWM) Vapor Intrusion Residential and Non-Residential Groundwater Screening Levels (GWSLs) dated January 2022.Compounds are reported to the laboratory method detection limits. Compounds in italics are reported to the laboratory reporting limits. With the exception of metals, only constituents detected in at least one sample are shown in the table above.Concentrations are reported in micrograms per liter (µg/L).Laboratory analytical methods are shown in parentheses.Bold values indicate compound concentration exceeds 2L Standard. Underlined values indicate compound concentration exceeds Residential GWSL.Shaded values indicate compound exceeds Non-Residential GWSL.VOCs = volatile organic compounds; SVOCs = semi-volatile organic compounds; -- = not applicable; BDL = below laboratory method detection limits.J = Compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated concentration. Screening Criteria UpgradientDowngradientµg/Lµg/L2L Standards (1)Residential GWSLs(2) Non-Residential GWSLs(2)8/20/20206/25/20216/25/2021TMW-3 / TMW-DUPhttps://harthick.sharepoint.com/sites/MasterFiles‐1/Shared Documents/AAA‐Master Projects/Mill Creek ‐ MLR/MLR‐001 Assistance League/EMP/Data Tables_Assistance League.xlsx3/24/2022Table 2 (Page 1 of 2)Hart & Hickman, PC
Table 2Summary of Groundwater Analytical DataAssistance LeagueCharlotte, North CarolinaH&H Job No. MLR-001Evaluation AreaSample IDMW-16 MW-20 MW-21 MW-23 MW-37 MW-57Sample Date8/18/2019 8/17/2019 8/18/2019 8/17/2019 8/182019 8/17/2019UnitsVOCs (8260D)Acetone<25.0 <25.0 <25.0 <25.0105<506,000 NE NEBenzene<1.0 <1.0 <1.0 <1.0 <1.0 <2.01 1.6 6.9Chloroethane <1.0 <1.0 <1.0 <1.0 <1.0 <2.03,000 1,800 7,700Chloroform<5.0 <5.0 <5.0 <5.0 <5.0 <10.070 0.81 3.61,1-Dichloroethane1.7<1.0 <1.0 <1.0 <1.0 <2.06 7.6 331,2-Dichloroethene (total)2.7<1.0 <1.0 <1.09.8 4.5 NE NE NE1,1-Dichloroethene<1.0 <1.0 <1.0 <1.05.9 10735039160cis-1,2-DichloroetheneNANANANANANA70NSNStrans-1,2-DichloroetheneNANANANANANA10022911,2-Dichloropropane<1.0<1.0<1.0<1.0<1.0<2.00.66.629Methyl Ethyl Ketone (MEK)<5.0<5.0<5.0<5.01.5<10.04,000450,0001,900,000Tetrachloroethene<1.0<1.0<1.0<1.02.5<2.00.71248Toluene <1.0<1.0<1.0<1.04.7<2.06003,80016,000Trichloroethene<1.0<1.0<1.0<1.0149177314.4Vinyl Chloride<1.0<1.0<1.0<1.0<1.04.20.030.152.5SVOCs (8270E)NANANANANANA------Metals (6020B/7470)ArsenicNA NA NA NA NA NA10 ----BariumNA NA NA NA NA NA700 ----CadmiumNA NA NA NA NA NA2----Chromium (total)NA NA NA NA NA NA10 ----LeadNA NA NA NA NA NA15 ----MercuryNA NA NA NA NA NA1 0.18 0.75SeleniumNA NA NA NA NA NA20 ----SilverNA NA NA NA NA NA20 ----Notes:1) North Carolina Department of Environmental Quality (DEQ) 15A NCAC 02L.0202 Groundwater Standards (2L Standards) dated April 2013.2) DEQ Division of Waste Management (DWM) Vapor Intrusion Residential and Non-Residential Groundwater Screening Levels (GWSLs) dated January 2022.Compounds are reported to the laboratory method detection limits. Compounds in italics are reported to the laboratory reporting limits. With the exception of metals, only constituents detected in at least one sample are shown in the table above.Concentrations are reported in micrograms per liter (µg/L).Laboratory analytical methods are shown in parentheses.Bold values indicate compound concentration exceeds 2L Standard. Underlined values indicate compound concentration exceeds Residential GWSL.Shaded values indicate compound exceeds Non-Residential GWSL.VOCs = volatile organic compounds; SVOCs = semi-volatile organic compounds; -- = not applicable; BDL = below laboratory method detection limits.J = Compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated concentration. Upgradient Screening Criteria 2L Standards (1)Residential GWSLs(2) Non-Residential GWSLs(2)µg/Lµg/Lhttps://harthick.sharepoint.com/sites/MasterFiles‐1/Shared Documents/AAA‐Master Projects/Mill Creek ‐ MLR/MLR‐001 Assistance League/EMP/Data Tables_Assistance League.xlsx3/24/2022Table 2 (Page 2 of 2)Hart & Hickman, PC
Table 5Summary of Soil Gas Analytical DataAssistance LeagueCharlotte, North CarolinaH&H Job No. MLR-001Sample IDSG-1* SG-2* SG-3* SG-4* SG-5* SG-6*Sample DateSample TypeUnitsVOCs (TO-15)Acetone220 400 430 1,000 1,200 2,000 NE NEBenzene368.66534159.5121602-Butanone (MEK)2605804601,3001,8002,20035,000440,000Carbon Disulfide<1.6<1.6<1.6<1.6<1.6<1.64,90061,000Carbon Tetrachloride<0.33<0.33<0.33<0.33<0.33<0.3316200Chloroform<0.24<0.24<0.24<0.24<0.24<0.244.153Chloromethane<0.32<0.32110<0.32<0.32<0.326307,900Cyclohexane<0.34<0.34<0.34<0.34<0.34<0.3442,000530,000cis-1,2-Dichloroethylene4.8<0.27<0.27<0.27<0.27<0.27NENEDichlorodifluoromethane (Freon 12)<0.31<0.31<0.31<0.31<0.31<0.317008,800Ethanol 828087120150260NENEEthyl Acetate<4.3<4.3<4.3<4.3<4.3<4.34906,100Ethylbenzene4.63.83.94.85.15.3374904-Ethyltoluene<0.30<0.30<0.30<0.30<0.30<0.30NENEHeptane1312<0.352425132,80035,000Hexane<1.3<1.37698110584,90061,000Isopropanol<4.5<4.5<4.5<4.5<4.5<4.51,40018,000Methylene Chloride<1.6<1.65818<1.6<1.63,40053,0004-Methyl-2-pentanone (MIBK)<0.43<0.43<0.43<0.43<0.43<0.4321,000260,000Naphthalene<0.59<0.59<0.59<0.59<0.59<0.592.836Propene<1.2<1.21,2002,000<141,10021,000260,000Styrene2.0<0.242.41.52.12.97,00088,000Tetrachloroethene380<0.44<1.4<1.4<1.4<1.42803,500Tetrahydrofuran<1.5<1.5<1.5<1.5<1.5<1.514,000180,000Toluene15111819222435,000440,0001,2,4-Trichlorobenzene<0.91<0.91<0.91<0.91<0.91<0.9114180Trichloroethene14<0.40<0.40<0.40<0.40<0.4014180Trichlorofluoromethane (Freon 11)<0.85<0.85<0.85180<0.85<0.85NENE1,2,4-Trimethylbenzene<0.22<0.22<0.22<0.22<0.22<0.224205,3001,3,5-Trimethylbenzene<0.26<0.26<0.26<0.261.51.54205,300Vinyl Acetate<2.0<2.0<2.0<2.0<2.0<2.01,40018,000Vinyl Chloride5.4<0.296.8<0.29<0.29<0.295.6280m&p-Xylene15159.31617177008,800o-Xylene7.66.43.67.28.98.07008,800Notes:1) North Carolina Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Vapor Intrusion Soil Gas Screening Levels (SGSLs) dated January 2022.Concentrations are reported in micrograms per cubic meter (µg/m3).Laboratory analytical method is shown in parentheses.Compound concentrations are reported to the laboratory method detection limits.Only compounds detected in at least one sample are shown in the table above.Bold values exceed the residential SGSL.VOCs = volatile organic compounds; NE = not established; NA = not analyzed J = Compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated concentration. B = Compound was detected in the laboratory blank. * Samples were collected by ECS Southeast, LLP on 5/17/2021 and results are documented in a draft Report of Limited Groundwater and Soil Gas Assessment Services dated May 28, 2021. µg/m35/17/2021Exterior Soil GasScreening Criteria Residential SGSLs (1)Non-Residential SGSLs (1)https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/Mill Creek - MLR/MLR-001 Assistance League/EMP/Data Tables_Assistance League.xlsxTable 5 (Page 1 of 3)Hart & Hickman, PC
Table 5Summary of Soil Gas Analytical DataAssistance LeagueCharlotte, North CarolinaH&H Job No. MLR-001Sample IDSG-1 SG-2 SG-3Sample DateSample TypeUnitsVOCs (TO-15)Acetone52.0 70.1 26.1 68.3 J 104 NE NEBenzene11.831.711.520.521.3121602-Butanone (MEK)25.118.57.3830.228.735,000440,000Carbon Disulfide18.881.131.712.011.54,90061,000Carbon Tetrachloride<0.1550.698 J<0.155<0.155<0.15516200Chloroform<0.08644.832.64<0.0864<0.08644.153Chloromethane<0.0673<0.0673<0.0673<0.0673<0.06736307,900Cyclohexane<0.1614.042.18 J6.456.5242,000530,000cis-1,2-Dichloroethylene<0.0955<0.0955<0.0955<0.0955<0.0955NENEDichlorodifluoromethane (Freon 12)3.2129.8180<0.134<0.1347008,800Ethanol NANANANANANENEEthyl Acetate<0.1362.74<0.136<0.136<0.1364906,100Ethylbenzene10147.718.215.314.7374904-Ethyltoluene<0.12819.67.668.298.15NENEHeptane13.558.926.516.516.12,80035,000Hexane12020.18.3925.323.64,90061,000Isopropanol<0.139<0.139<0.13911.911.81,40018,000Methylene Chloride<0.4891.961.25 J<0.489<0.4893,40053,0004-Methyl-2-pentanone (MIBK)4.905.664.127.917.5121,000260,000Naphthalene18.8<0.1837.3218.218.42.836Propene80.585.417.189.485.221,000260,000Styrene2.891.04 J<0.1242.932.987,00088,000Tetrachloroethene0.807 J2.29 J1.29 J2.44 J<0.1812803,500Tetrahydrofuran1.474.760.737 J1.521.43 J14,000180,000Toluene45431425341.642.335,000440,0001,2,4-Trichlorobenzene<0.2091.55 J,B<0.209<0.209<0.20914180Trichloroethene<0.199<0.199<0.199<0.1990.672 J14180Trichlorofluoromethane (Freon 11)<0.1306.5623.9<0.130<0.130NENE1,2,4-Trimethylbenzene2.7251.420.951.651.24205,3001,3,5-Trimethylbenzene0.855 J13.95.4919.819.64205,300Vinyl Acetate4.27<0.224<0.224<0.224<0.2241,40018,000Vinyl Chloride<0.127<0.127<0.127<0.127<0.1275.6280m&p-Xylene34815259.957.056.77008,800o-Xylene94.454.221.617.517.67008,800Notes:1) North Carolina Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Vapor Intrusion Soil Gas Screening Levels (SGSLs) dated January 2022.Concentrations are reported in micrograms per cubic meter (µg/m3).Laboratory analytical method is shown in parentheses.Compound concentrations are reported to the laboratory method detection limits.Only compounds detected in at least one sample are shown in the table above.Bold values exceed the residential SGSL.VOCs = volatile organic compounds; NE = not established; NA = not analyzed J = Compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated concentration. B = Compound was detected in the laboratory blank. Exterior Soil Gas6/25/2021SG-4 / SG-DUPµg/m3Screening Criteria Residential SGSLs (1)Non-Residential SGSLs (1)https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/Mill Creek - MLR/MLR-001 Assistance League/EMP/Data Tables_Assistance League.xlsxTable 5 (Page 2 of 3)Hart & Hickman, PC
Table 5Summary of Soil Gas Analytical DataAssistance LeagueCharlotte, North CarolinaH&H Job No. MLR-001Sample IDSSV-1 SSV-2 SSV-3Sample DateSample TypeUnitsVOCs (TO-15)Acetone99.7 687 32.9 84.4 87.4 NE NEBenzene0.470 J<0.07330.281 J<0.0733<0.0733121602-Butanone (MEK)2.184.4020.52.621.7535,000440,000Carbon Disulfide3.50 JB1.32 JB3.38 JB2.23 JB2.07 JB4,90061,000Carbon Tetrachloride<0.155<0.155<0.155<0.155<0.15516200Chloroform0.454 J<0.0864<0.0864<0.0864<0.08644.153Chloromethane<0.0673<0.0673<0.0673<0.0673<0.06736307,900Cyclohexane1.18 J<0.161<0.1617.898.4042,000530,000cis-1,2-Dichloroethylene<0.0955<0.0955<0.0955<0.0955<0.0955NENEDichlorodifluoromethane (Freon 12)15.712773.94.194.377008,800Ethanol NANANANANANENEEthyl Acetate<0.136<0.136<0.136<0.136<0.1364906,100Ethylbenzene<0.1060.382 J<0.106<0.106<0.106374904-Ethyltoluene<0.128<0.128<0.128<0.128<0.128NENEHeptane0.643 J0.598 J<0.143<0.143<0.1432,80035,000Hexane5.19<0.0472<0.0472<0.04720.610 J4,90061,000Isopropanol24.032.812.370.372.31,40018,000Methylene Chloride8.411.33 J1.841.51 J1.70 J3,40053,0004-Methyl-2-pentanone (MIBK)0.406 J0.467 J<0.121<0.121<0.12121,000260,000Naphthalene2.753.462.682.69<0.1832.836Propene<0.242<0.242<0.242<0.242<0.24221,000260,000Styrene<0.124<0.124<0.124<0.1240.371 J7,00088,000Tetrachloroethene<0.181<0.1810.909 J1.28 J<0.1812803,500Tetrahydrofuran<0.1070.652 J3.950.652 J<.10714,000180,000Toluene1.911.38 J2.770.784 J0.874 J35,000440,0001,2,4-Trichlorobenzene<0.209<0.209<0.209<0.209<0.20914180Trichloroethene<0.199<0.199<0.199<0.199<0.19914180Trichlorofluoromethane (Freon 11)14.86.998.053.964.08NENE1,2,4-Trimethylbenzene<0.1100.752 J<0.1101.06 J<0.1104205,3001,3,5-Trimethylbenzene<0.236<0.236<0.2360.555 J<0.2364205,300Vinyl Acetate1.00 J<0.224<0.224<0.224<0.2241,40018,000Vinyl Chloride<0.127<0.127<0.127<0.127<0.1275.6280m&p-Xylene1.12 J1.42 J0.873 J0.443 J0.417 J7008,800o-Xylene0.426 J0.408 J0.386 J<0.157<0.1577008,800Notes:1) North Carolina Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Vapor Intrusion Soil Gas Screening Levels (SGSLs) dated January 2022.Concentrations are reported in micrograms per cubic meter (µg/m3).Laboratory analytical method is shown in parentheses.Compound concentrations are reported to the laboratory method detection limits.Only compounds detected in at least one sample are shown in the table above.Bold values exceed the residential SGSL.VOCs = volatile organic compounds; NE = not establishedJ = Compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated concentration. B = Compound was detected in the laboratory blank. µg/m3SSV-4/SSV-DUP2/16/2022Sub-Slab Soil GasScreening Criteria Residential SGSLs (1)Non-Residential SGSLs (1)https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/Mill Creek - MLR/MLR-001 Assistance League/EMP/Data Tables_Assistance League.xlsxTable 5 (Page 3 of 3)Hart & Hickman, PC
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
7/6/2021
Prepared By:JCG
ACB
SG-1
North Carolina Department of Environmental Quality
Risk Calculator
Assistance League
3405 S. Tryon Street
Brownfields
June 2021
May 2021 EPA RSL Table
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-1
Form No.
Input Form 1A Complete Exposure Pathways
Input Form 1B Exposure Factors and Target Risks
Input Form 1C Contaminant Migration Parameters
Input Form 1D Sample Statistics
Input Form 2A Soil Exposure Point Concentration Table
Input Form 2B Groundwater Exposure Point Concentration Table
Input Form 2C Surface Water Exposure Point Concentration Table
Input Form 2D Soil Gas Exposure Point Concentration Table
Input Form 2E Indoor Air Exposure Point Concentration Table
Output Form 1A Risk for Individual Pathways
Output Form 1B Sitewide Risk
Output Form 2A Resident Soil
Output Form 2B Resident Groundwater Use
Output Form 2C Non-Residential Worker Soil
Output Form 2D Non-Residential Worker Groundwater Use
Output Form 2E Construction Worker Soil
Output Form 2F Recreator/Trespasser Soil
Output Form 2G Recreator/Trespasser Surface Water
Output Form 3A Resident Groundwater to Indoor Air
Output Form 3B Resident Soil Gas to Indoor Air
Output Form 3C Resident Indoor Air
Output Form 3D Non-Residential Worker Groundwater to Indoor Air
Output Form 3E Non-Residential Worker Soil Gas to Indoor Air
Output Form 3F Non-Residential Worker Indoor Air
Output Form 4A Soil to Groundwater - Forward Mode
Output Form 4B Groundwater to Groundwater - Forward Mode
Output Form 4C Soil to Surface Water - Forward Mode
Output Form 4D Groundwater to Surface Water - Forward Mode
Output Form 4E Soil to Groundwater - Backward Mode
Output Form 4F Groundwater to Groundwater - Backward Mode
Output Form 4G Soil to Surface Water - Backward Mode
Output Form 4H Groundwater to Surface Water - Backward Mode
Output Section 4 - Contaminant Migration Worksheets
Output Section 3 - Vapor Intrusion Calculators
TOC
Description
DATA INPUT SHEETS
Check box
if included
Input Section 1 - Exposure Pathways & Parameters
Input Section 2 - Exposure Point Concentrations
DATA OUTPUT SHEETS
Output Section 1 - Summary Output for All Calculators
Output Section 2 - Direct Contact Soil and Groundwater Calculators
North Carolina DEQ Risk Calculator
Complete Exposure Pathways
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-1
Note: Risk output will only be calculated for complete exposure pathways.
Receptor Pathway
Check box if
pathway
complete
Soil
Groundwater Use
Soil
Groundwater Use
Construction Worker Soil
Soil
Surface Water
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Source Soil
Source Groundwater
Source Soil
Source Groundwater
Input Form 1A
VAPOR INTRUSION PATHWAYS
DIRECT CONTACT SOIL AND WATER PATHWAYS
Resident
Non-Residential Worker
Recreator/Trespasser
Resident
Non-Residential Worker
CONTAMINANT MIGRATION PATHWAYS
Groundwater
Surface Water
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-1
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(ug/m3)
Notes:CAS Number Chemical
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection
Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity Value
(Screening
Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC Flag
(Y/N)
Rationale for
Selection or
Deletion
52 67-64-1 Acetone ug/m3
11.8 71-43-2 Benzene ug/m3
18.8 75-15-0 Carbon Disulfide ug/m3
3.21 75-71-8 Dichlorodifluoromethane ug/m3
101 100-41-4 Ethylbenzene ug/m3
1.47 109-99-9 ~Tetrahydrofuran ug/m3
13.5 142-82-5 Heptane, N-ug/m3
120 110-54-3 Hexane, N-ug/m3
25.1 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3
4.9 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)ug/m3
18.8 91-20-3 ~Naphthalene ug/m3
80.5 115-07-1 Propylene ug/m3
2.89 100-42-5 Styrene ug/m3
0.807 127-18-4 Tetrachloroethylene ug/m3
454 108-88-3 Toluene ug/m3
2.72 95-63-6 Trimethylbenzene, 1,2,4-ug/m3
0.855 108-67-8 Trimethylbenzene, 1,3,5-ug/m3
4.27 108-05-4 Vinyl Acetate ug/m3
348 108-38-3 Xylene, m-ug/m3
94.4 95-47-6 Xylene, o-ug/m3
Input Form 2D
Soil Gas Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-1
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use*NC NC NC
Soil NC NC NC
Groundwater Use*NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water*NC NC NC
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 1.1E-05 3.4E-01 NO
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 8.0E-07 2.7E-02 NO
Indoor Air NC NC NC
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
3. NM = Not Modeled
4. NC = Pathway not calculated
DIRECT CONTACT SOIL AND WATER CALCULATORS
Resident
Non-Residential Worker
Recreator/Trespasser
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based
closure.
Surface Water Exceedence of 2B at Receptor?
Exceedence of 2B at Receptor?
VAPOR INTRUSION CALCULATORS
Resident
Non-Residential Worker
CONTAMINANT MIGRATION CALCULATORS
Target Receptor Concentrations Exceeded?
Groundwater Exceedence of 2L at Receptor?
Exceedence of 2L at Receptor?
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
Notes:
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-1
CAS #Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 52 1.56 -6.5E+03 4.8E-05
71-43-2 Benzene 11.8 0.354 3.6E-01 6.3E+00 9.8E-07 1.1E-02
75-15-0 Carbon Disulfide 18.8 0.564 -1.5E+02 7.7E-04
75-71-8 Dichlorodifluoromethane 3.21 0.0963 -2.1E+01 9.2E-04
100-41-4 Ethylbenzene 101 3.03 1.1E+00 2.1E+02 2.7E-06 2.9E-03
109-99-9 ~Tetrahydrofuran 1.47 0.0441 -4.2E+02 2.1E-05
142-82-5 Heptane, N-13.5 0.405 -8.3E+01 9.7E-04
110-54-3 Hexane, N-120 3.6 -1.5E+02 4.9E-03
78-93-3 Methyl Ethyl Ketone (2-Butanone)25.1 0.753 -1.0E+03 1.4E-04
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)4.9 0.147 -6.3E+02 4.7E-05
91-20-3 ~Naphthalene 18.8 0.564 8.3E-02 6.3E-01 6.8E-06 1.8E-01
115-07-1 Propylene 80.5 2.415 -6.3E+02 7.7E-04
100-42-5 Styrene 2.89 0.0867 -2.1E+02 8.3E-05
127-18-4 Tetrachloroethylene 0.807 0.02421 1.1E+01 8.3E+00 2.2E-09 5.8E-04
108-88-3 Toluene 454 13.62 -1.0E+03 2.6E-03
95-63-6 Trimethylbenzene, 1,2,4-2.72 0.0816 -1.3E+01 1.3E-03
108-67-8 Trimethylbenzene, 1,3,5-0.855 0.02565 -1.3E+01 4.1E-04
108-05-4 Vinyl Acetate 4.27 0.1281 -4.2E+01 6.1E-04
108-38-3 Xylene, m-348 10.44 -2.1E+01 1.0E-01
95-47-6 Xylene, o-94.4 2.832 -2.1E+01 2.7E-02
Cumulative:1.1E-05 3.4E-01
All concentrations are in ug/m3
Output Form 3B
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Soil Gas to Indoor Air
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-1
CAS #Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 52 0.52 -2.7E+04 3.8E-06
71-43-2 Benzene 11.8 0.118 1.6E+00 2.6E+01 7.5E-08 9.0E-04
75-15-0 Carbon Disulfide 18.8 0.188 -6.1E+02 6.1E-05
75-71-8 Dichlorodifluoromethane 3.21 0.0321 -8.8E+01 7.3E-05
100-41-4 Ethylbenzene 101 1.01 4.9E+00 8.8E+02 2.1E-07 2.3E-04
109-99-9 ~Tetrahydrofuran 1.47 0.0147 -1.8E+03 1.7E-06
142-82-5 Heptane, N-13.5 0.135 -3.5E+02 7.7E-05
110-54-3 Hexane, N-120 1.2 -6.1E+02 3.9E-04
78-93-3 Methyl Ethyl Ketone (2-Butanone)25.1 0.251 -4.4E+03 1.1E-05
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)4.9 0.049 -2.6E+03 3.7E-06
91-20-3 ~Naphthalene 18.8 0.188 3.6E-01 2.6E+00 5.2E-07 1.4E-02
115-07-1 Propylene 80.5 0.805 -2.6E+03 6.1E-05
100-42-5 Styrene 2.89 0.0289 -8.8E+02 6.6E-06
127-18-4 Tetrachloroethylene 0.807 0.00807 4.7E+01 3.5E+01 1.7E-10 4.6E-05
108-88-3 Toluene 454 4.54 -4.4E+03 2.1E-04
95-63-6 Trimethylbenzene, 1,2,4-2.72 0.0272 -5.3E+01 1.0E-04
108-67-8 Trimethylbenzene, 1,3,5-0.855 0.00855 -5.3E+01 3.3E-05
108-05-4 Vinyl Acetate 4.27 0.0427 -1.8E+02 4.9E-05
108-38-3 Xylene, m-348 3.48 -8.8E+01 7.9E-03
95-47-6 Xylene, o-94.4 0.944 -8.8E+01 2.2E-03
Cumulative:8.0E-07 2.7E-02
All concentrations are in ug/m3
Output Form
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk,
no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
SG-2
North Carolina Department of Environmental Quality
Risk Calculator
Assistance League
3405 S. Tryon Street
Brownfields
June 2021
May 2021 EPA RSL Table
7/6/2021
Prepared By:JCG
ACB
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-2
Form No.
Input Form 1A Complete Exposure Pathways
Input Form 1B Exposure Factors and Target Risks
Input Form 1C Contaminant Migration Parameters
Input Form 1D Sample Statistics
Input Form 2A Soil Exposure Point Concentration Table
Input Form 2B Groundwater Exposure Point Concentration Table
Input Form 2C Surface Water Exposure Point Concentration Table
Input Form 2D Soil Gas Exposure Point Concentration Table
Input Form 2E Indoor Air Exposure Point Concentration Table
Output Form 1A Risk for Individual Pathways
Output Form 1B Sitewide Risk
Output Form 2A Resident Soil
Output Form 2B Resident Groundwater Use
Output Form 2C Non-Residential Worker Soil
Output Form 2D Non-Residential Worker Groundwater Use
Output Form 2E Construction Worker Soil
Output Form 2F Recreator/Trespasser Soil
Output Form 2G Recreator/Trespasser Surface Water
Output Form 3A Resident Groundwater to Indoor Air
Output Form 3B Resident Soil Gas to Indoor Air
Output Form 3C Resident Indoor Air
Output Form 3D Non-Residential Worker Groundwater to Indoor Air
Output Form 3E Non-Residential Worker Soil Gas to Indoor Air
Output Form 3F Non-Residential Worker Indoor Air
Output Form 4A Soil to Groundwater - Forward Mode
Output Form 4B Groundwater to Groundwater - Forward Mode
Output Form 4C Soil to Surface Water - Forward Mode
Output Form 4D Groundwater to Surface Water - Forward Mode
Output Form 4E Soil to Groundwater - Backward Mode
Output Form 4F Groundwater to Groundwater - Backward Mode
Output Form 4G Soil to Surface Water - Backward Mode
Output Form 4H Groundwater to Surface Water - Backward Mode
Output Section 4 - Contaminant Migration Worksheets
Output Section 3 - Vapor Intrusion Calculators
TOC
Description
DATA INPUT SHEETS
Check box
if included
Input Section 1 - Exposure Pathways & Parameters
Input Section 2 - Exposure Point Concentrations
DATA OUTPUT SHEETS
Output Section 1 - Summary Output for All Calculators
Output Section 2 - Direct Contact Soil and Groundwater Calculators
North Carolina DEQ Risk Calculator
Complete Exposure Pathways
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-2
Note: Risk output will only be calculated for complete exposure pathways.
Receptor Pathway
Check box if
pathway
complete
Soil
Groundwater Use
Soil
Groundwater Use
Construction Worker Soil
Soil
Surface Water
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Source Soil
Source Groundwater
Source Soil
Source Groundwater
Resident
Non-Residential Worker
CONTAMINANT MIGRATION PATHWAYS
Groundwater
Surface Water
Input Form 1A
VAPOR INTRUSION PATHWAYS
DIRECT CONTACT SOIL AND WATER PATHWAYS
Resident
Non-Residential Worker
Recreator/Trespasser
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-2
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(ug/m3)
Notes:CAS Number Chemical
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection
Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity Value
(Screening
Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC Flag
(Y/N)
Rationale for
Selection or
Deletion
70.1 67-64-1 Acetone ug/m3
31.7 71-43-2 Benzene ug/m3
81.1 75-15-0 Carbon Disulfide ug/m3
0.698 56-23-5 Carbon Tetrachloride ug/m3
4.83 67-66-3 Chloroform ug/m3
4.04 110-83-8 Cyclohexene ug/m3
29.8 75-71-8 Dichlorodifluoromethane ug/m3
2.74 141-78-6 Ethyl Acetate ug/m3
47.7 100-41-4 Ethylbenzene ug/m3
4.76 109-99-9 ~Tetrahydrofuran ug/m3
58.9 142-82-5 Heptane, N-ug/m3
20.1 110-54-3 Hexane, N-ug/m3
18.5 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3
5.66 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)ug/m3
1.96 75-09-2 Methylene Chloride ug/m3
85.4 115-07-1 Propylene ug/m3
1.04 100-42-5 Styrene ug/m3
2.29 127-18-4 Tetrachloroethylene ug/m3
314 108-88-3 Toluene ug/m3
1.55 120-82-1 Trichlorobenzene, 1,2,4-ug/m3
6.56 75-69-4 Trichlorofluoromethane ug/m3
51.4 95-63-6 Trimethylbenzene, 1,2,4-ug/m3
13.9 108-67-8 Trimethylbenzene, 1,3,5-ug/m3
152 108-38-3 Xylene, m-ug/m3
54.2 95-47-6 Xylene, o-ug/m3
Input Form 2D
Soil Gas Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-2
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use*NC NC NC
Soil NC NC NC
Groundwater Use*NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water*NC NC NC
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 5.2E-06 1.7E-01 NO
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 3.9E-07 1.3E-02 NO
Indoor Air NC NC NC
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
3. NM = Not Modeled
4. NC = Pathway not calculated
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based
closure.
Surface Water Exceedence of 2B at Receptor?
Exceedence of 2B at Receptor?
VAPOR INTRUSION CALCULATORS
Resident
Non-Residential Worker
CONTAMINANT MIGRATION CALCULATORS
Target Receptor Concentrations Exceeded?
Groundwater Exceedence of 2L at Receptor?
Exceedence of 2L at Receptor?
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
Notes:
DIRECT CONTACT SOIL AND WATER CALCULATORS
Resident
Non-Residential Worker
Recreator/Trespasser
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-2
CAS #Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 70.1 2.103 -6.5E+03 6.5E-05
71-43-2 Benzene 31.7 0.951 3.6E-01 6.3E+00 2.6E-06 3.0E-02
75-15-0 Carbon Disulfide 81.1 2.433 -1.5E+02 3.3E-03
56-23-5 Carbon Tetrachloride 0.698 0.02094 4.7E-01 2.1E+01 4.5E-08 2.0E-04
67-66-3 Chloroform 4.83 0.1449 1.2E-01 2.0E+01 1.2E-06 1.4E-03
110-83-8 Cyclohexene 4.04 0.1212 -2.1E+02 1.2E-04
75-71-8 Dichlorodifluoromethane 29.8 0.894 -2.1E+01 8.6E-03
141-78-6 Ethyl Acetate 2.74 0.0822 -1.5E+01 1.1E-03
100-41-4 Ethylbenzene 47.7 1.431 1.1E+00 2.1E+02 1.3E-06 1.4E-03
109-99-9 ~Tetrahydrofuran 4.76 0.1428 -4.2E+02 6.8E-05
142-82-5 Heptane, N-58.9 1.767 -8.3E+01 4.2E-03
110-54-3 Hexane, N-20.1 0.603 -1.5E+02 8.3E-04
78-93-3 Methyl Ethyl Ketone (2-Butanone)18.5 0.555 -1.0E+03 1.1E-04
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)5.66 0.1698 -6.3E+02 5.4E-05
75-09-2 Methylene Chloride 1.96 0.0588 1.0E+02 1.3E+02 5.8E-10 9.4E-05
115-07-1 Propylene 85.4 2.562 -6.3E+02 8.2E-04
100-42-5 Styrene 1.04 0.0312 -2.1E+02 3.0E-05
127-18-4 Tetrachloroethylene 2.29 0.0687 1.1E+01 8.3E+00 6.4E-09 1.6E-03
108-88-3 Toluene 314 9.42 -1.0E+03 1.8E-03
120-82-1 Trichlorobenzene, 1,2,4-1.55 0.0465 -4.2E-01 2.2E-02
75-69-4 Trichlorofluoromethane 6.56 0.1968 --
95-63-6 Trimethylbenzene, 1,2,4-51.4 1.542 -1.3E+01 2.5E-02
108-67-8 Trimethylbenzene, 1,3,5-13.9 0.417 -1.3E+01 6.7E-03
108-38-3 Xylene, m-152 4.56 -2.1E+01 4.4E-02
95-47-6 Xylene, o-54.2 1.626 -2.1E+01 1.6E-02
Cumulative:5.2E-06 1.7E-01
All concentrations are in ug/m3
Output Form 3B
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Soil Gas to Indoor Air
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-2
CAS #Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 70.1 0.701 -2.7E+04 5.2E-06
71-43-2 Benzene 31.7 0.317 1.6E+00 2.6E+01 2.0E-07 2.4E-03
75-15-0 Carbon Disulfide 81.1 0.811 -6.1E+02 2.6E-04
56-23-5 Carbon Tetrachloride 0.698 0.00698 2.0E+00 8.8E+01 3.4E-09 1.6E-05
67-66-3 Chloroform 4.83 0.0483 5.3E-01 8.6E+01 9.1E-08 1.1E-04
110-83-8 Cyclohexene 4.04 0.0404 -8.8E+02 9.2E-06
75-71-8 Dichlorodifluoromethane 29.8 0.298 -8.8E+01 6.8E-04
141-78-6 Ethyl Acetate 2.74 0.0274 -6.1E+01 8.9E-05
100-41-4 Ethylbenzene 47.7 0.477 4.9E+00 8.8E+02 9.7E-08 1.1E-04
109-99-9 ~Tetrahydrofuran 4.76 0.0476 -1.8E+03 5.4E-06
142-82-5 Heptane, N-58.9 0.589 -3.5E+02 3.4E-04
110-54-3 Hexane, N-20.1 0.201 -6.1E+02 6.6E-05
78-93-3 Methyl Ethyl Ketone (2-Butanone)18.5 0.185 -4.4E+03 8.4E-06
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)5.66 0.0566 -2.6E+03 4.3E-06
75-09-2 Methylene Chloride 1.96 0.0196 1.2E+03 5.3E+02 1.6E-11 7.5E-06
115-07-1 Propylene 85.4 0.854 -2.6E+03 6.5E-05
100-42-5 Styrene 1.04 0.0104 -8.8E+02 2.4E-06
127-18-4 Tetrachloroethylene 2.29 0.0229 4.7E+01 3.5E+01 4.9E-10 1.3E-04
108-88-3 Toluene 314 3.14 -4.4E+03 1.4E-04
120-82-1 Trichlorobenzene, 1,2,4-1.55 0.0155 -1.8E+00 1.8E-03
75-69-4 Trichlorofluoromethane 6.56 0.0656 --
95-63-6 Trimethylbenzene, 1,2,4-51.4 0.514 -5.3E+01 2.0E-03
108-67-8 Trimethylbenzene, 1,3,5-13.9 0.139 -5.3E+01 5.3E-04
108-38-3 Xylene, m-152 1.52 -8.8E+01 3.5E-03
95-47-6 Xylene, o-54.2 0.542 -8.8E+01 1.2E-03
Cumulative:3.9E-07 1.3E-02
All concentrations are in ug/m3
Output Form
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk,
no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
SG-3
North Carolina Department of Environmental Quality
Risk Calculator
Assistance League
3405 S. Tryon Street
Brownfields
June 2021
May 2021 EPA RSL Table
7/6/2021
Prepared By:JCG
ACB
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-3
Form No.
Input Form 1A Complete Exposure Pathways
Input Form 1B Exposure Factors and Target Risks
Input Form 1C Contaminant Migration Parameters
Input Form 1D Sample Statistics
Input Form 2A Soil Exposure Point Concentration Table
Input Form 2B Groundwater Exposure Point Concentration Table
Input Form 2C Surface Water Exposure Point Concentration Table
Input Form 2D Soil Gas Exposure Point Concentration Table
Input Form 2E Indoor Air Exposure Point Concentration Table
Output Form 1A Risk for Individual Pathways
Output Form 1B Sitewide Risk
Output Form 2A Resident Soil
Output Form 2B Resident Groundwater Use
Output Form 2C Non-Residential Worker Soil
Output Form 2D Non-Residential Worker Groundwater Use
Output Form 2E Construction Worker Soil
Output Form 2F Recreator/Trespasser Soil
Output Form 2G Recreator/Trespasser Surface Water
Output Form 3A Resident Groundwater to Indoor Air
Output Form 3B Resident Soil Gas to Indoor Air
Output Form 3C Resident Indoor Air
Output Form 3D Non-Residential Worker Groundwater to Indoor Air
Output Form 3E Non-Residential Worker Soil Gas to Indoor Air
Output Form 3F Non-Residential Worker Indoor Air
Output Form 4A Soil to Groundwater - Forward Mode
Output Form 4B Groundwater to Groundwater - Forward Mode
Output Form 4C Soil to Surface Water - Forward Mode
Output Form 4D Groundwater to Surface Water - Forward Mode
Output Form 4E Soil to Groundwater - Backward Mode
Output Form 4F Groundwater to Groundwater - Backward Mode
Output Form 4G Soil to Surface Water - Backward Mode
Output Form 4H Groundwater to Surface Water - Backward Mode
Output Section 4 - Contaminant Migration Worksheets
Output Section 3 - Vapor Intrusion Calculators
TOC
Description
DATA INPUT SHEETS
Check box
if included
Input Section 1 - Exposure Pathways & Parameters
Input Section 2 - Exposure Point Concentrations
DATA OUTPUT SHEETS
Output Section 1 - Summary Output for All Calculators
Output Section 2 - Direct Contact Soil and Groundwater Calculators
North Carolina DEQ Risk Calculator
Complete Exposure Pathways
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-3
Note: Risk output will only be calculated for complete exposure pathways.
Receptor Pathway
Check box if
pathway
complete
Soil
Groundwater Use
Soil
Groundwater Use
Construction Worker Soil
Soil
Surface Water
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Source Soil
Source Groundwater
Source Soil
Source Groundwater
Resident
Non-Residential Worker
CONTAMINANT MIGRATION PATHWAYS
Groundwater
Surface Water
Input Form 1A
VAPOR INTRUSION PATHWAYS
DIRECT CONTACT SOIL AND WATER PATHWAYS
Resident
Non-Residential Worker
Recreator/Trespasser
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-3
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(ug/m3)
Notes:CAS Number Chemical
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection
Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity Value
(Screening
Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC Flag
(Y/N)
Rationale for
Selection or
Deletion
26.1 67-64-1 Acetone ug/m3
11.5 71-43-2 Benzene ug/m3
31.7 75-15-0 Carbon Disulfide ug/m3
2.64 67-66-3 Chloroform ug/m3
2.18 110-82-7 Cyclohexane ug/m3
180 75-71-8 Dichlorodifluoromethane ug/m3
18.2 100-41-4 Ethylbenzene ug/m3
0.737 109-99-9 ~Tetrahydrofuran ug/m3
26.5 142-82-5 Heptane, N-ug/m3
8.39 110-54-3 Hexane, N-ug/m3
7.38 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3
4.12 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)ug/m3
1.25 75-09-2 Methylene Chloride ug/m3
7.32 91-20-3 ~Naphthalene ug/m3
17.1 115-07-1 Propylene ug/m3
1.29 127-18-4 Tetrachloroethylene ug/m3
253 108-88-3 Toluene ug/m3
23.9 75-69-4 Trichlorofluoromethane ug/m3
20.9 95-63-6 Trimethylbenzene, 1,2,4-ug/m3
5.49 108-67-8 Trimethylbenzene, 1,3,5-ug/m3
59.9 108-38-3 Xylene, m-ug/m3
21.6 95-47-6 Xylene, o-ug/m3
Input Form 2D
Soil Gas Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-3
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use*NC NC NC
Soil NC NC NC
Groundwater Use*NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water*NC NC NC
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 4.8E-06 1.8E-01 NO
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 3.6E-07 1.4E-02 NO
Indoor Air NC NC NC
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
3. NM = Not Modeled
4. NC = Pathway not calculated
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based
closure.
Surface Water Exceedence of 2B at Receptor?
Exceedence of 2B at Receptor?
VAPOR INTRUSION CALCULATORS
Resident
Non-Residential Worker
CONTAMINANT MIGRATION CALCULATORS
Target Receptor Concentrations Exceeded?
Groundwater Exceedence of 2L at Receptor?
Exceedence of 2L at Receptor?
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
Notes:
DIRECT CONTACT SOIL AND WATER CALCULATORS
Resident
Non-Residential Worker
Recreator/Trespasser
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-3
CAS #Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 26.1 0.783 -6.5E+03 2.4E-05
71-43-2 Benzene 11.5 0.345 3.6E-01 6.3E+00 9.6E-07 1.1E-02
75-15-0 Carbon Disulfide 31.7 0.951 -1.5E+02 1.3E-03
67-66-3 Chloroform 2.64 0.0792 1.2E-01 2.0E+01 6.5E-07 7.7E-04
110-82-7 Cyclohexane 2.18 0.0654 -1.3E+03 1.0E-05
75-71-8 Dichlorodifluoromethane 180 5.4 -2.1E+01 5.2E-02
100-41-4 Ethylbenzene 18.2 0.546 1.1E+00 2.1E+02 4.9E-07 5.2E-04
109-99-9 ~Tetrahydrofuran 0.737 0.02211 -4.2E+02 1.1E-05
142-82-5 Heptane, N-26.5 0.795 -8.3E+01 1.9E-03
110-54-3 Hexane, N-8.39 0.2517 -1.5E+02 3.4E-04
78-93-3 Methyl Ethyl Ketone (2-Butanone)7.38 0.2214 -1.0E+03 4.2E-05
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)4.12 0.1236 -6.3E+02 4.0E-05
75-09-2 Methylene Chloride 1.25 0.0375 1.0E+02 1.3E+02 3.7E-10 6.0E-05
91-20-3 ~Naphthalene 7.32 0.2196 8.3E-02 6.3E-01 2.7E-06 7.0E-02
115-07-1 Propylene 17.1 0.513 -6.3E+02 1.6E-04
127-18-4 Tetrachloroethylene 1.29 0.0387 1.1E+01 8.3E+00 3.6E-09 9.3E-04
108-88-3 Toluene 253 7.59 -1.0E+03 1.5E-03
75-69-4 Trichlorofluoromethane 23.9 0.717 --
95-63-6 Trimethylbenzene, 1,2,4-20.9 0.627 -1.3E+01 1.0E-02
108-67-8 Trimethylbenzene, 1,3,5-5.49 0.1647 -1.3E+01 2.6E-03
108-38-3 Xylene, m-59.9 1.797 -2.1E+01 1.7E-02
95-47-6 Xylene, o-21.6 0.648 -2.1E+01 6.2E-03
Cumulative:4.8E-06 1.8E-01
All concentrations are in ug/m3
Output Form 3B
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Soil Gas to Indoor Air
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-3
CAS #Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 26.1 0.261 -2.7E+04 1.9E-06
71-43-2 Benzene 11.5 0.115 1.6E+00 2.6E+01 7.3E-08 8.8E-04
75-15-0 Carbon Disulfide 31.7 0.317 -6.1E+02 1.0E-04
67-66-3 Chloroform 2.64 0.0264 5.3E-01 8.6E+01 5.0E-08 6.2E-05
110-82-7 Cyclohexane 2.18 0.0218 -5.3E+03 8.3E-07
75-71-8 Dichlorodifluoromethane 180 1.8 -8.8E+01 4.1E-03
100-41-4 Ethylbenzene 18.2 0.182 4.9E+00 8.8E+02 3.7E-08 4.2E-05
109-99-9 ~Tetrahydrofuran 0.737 0.00737 -1.8E+03 8.4E-07
142-82-5 Heptane, N-26.5 0.265 -3.5E+02 1.5E-04
110-54-3 Hexane, N-8.39 0.0839 -6.1E+02 2.7E-05
78-93-3 Methyl Ethyl Ketone (2-Butanone)7.38 0.0738 -4.4E+03 3.4E-06
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)4.12 0.0412 -2.6E+03 3.1E-06
75-09-2 Methylene Chloride 1.25 0.0125 1.2E+03 5.3E+02 1.0E-11 4.8E-06
91-20-3 ~Naphthalene 7.32 0.0732 3.6E-01 2.6E+00 2.0E-07 5.6E-03
115-07-1 Propylene 17.1 0.171 -2.6E+03 1.3E-05
127-18-4 Tetrachloroethylene 1.29 0.0129 4.7E+01 3.5E+01 2.7E-10 7.4E-05
108-88-3 Toluene 253 2.53 -4.4E+03 1.2E-04
75-69-4 Trichlorofluoromethane 23.9 0.239 --
95-63-6 Trimethylbenzene, 1,2,4-20.9 0.209 -5.3E+01 8.0E-04
108-67-8 Trimethylbenzene, 1,3,5-5.49 0.0549 -5.3E+01 2.1E-04
108-38-3 Xylene, m-59.9 0.599 -8.8E+01 1.4E-03
95-47-6 Xylene, o-21.6 0.216 -8.8E+01 4.9E-04
Cumulative:3.6E-07 1.4E-02
All concentrations are in ug/m3
Output Form
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk,
no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
7/6/2021
Prepared By:JCG
ACB
SG-4/SG-DUP
North Carolina Department of Environmental Quality
Risk Calculator
Assistance League
3405 S. Tryon Street
Brownfields
June 2021
May 2021 EPA RSL Table
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-4/SG-DUP
Form No.
Input Form 1A Complete Exposure Pathways
Input Form 1B Exposure Factors and Target Risks
Input Form 1C Contaminant Migration Parameters
Input Form 1D Sample Statistics
Input Form 2A Soil Exposure Point Concentration Table
Input Form 2B Groundwater Exposure Point Concentration Table
Input Form 2C Surface Water Exposure Point Concentration Table
Input Form 2D Soil Gas Exposure Point Concentration Table
Input Form 2E Indoor Air Exposure Point Concentration Table
Output Form 1A Risk for Individual Pathways
Output Form 1B Sitewide Risk
Output Form 2A Resident Soil
Output Form 2B Resident Groundwater Use
Output Form 2C Non-Residential Worker Soil
Output Form 2D Non-Residential Worker Groundwater Use
Output Form 2E Construction Worker Soil
Output Form 2F Recreator/Trespasser Soil
Output Form 2G Recreator/Trespasser Surface Water
Output Form 3A Resident Groundwater to Indoor Air
Output Form 3B Resident Soil Gas to Indoor Air
Output Form 3C Resident Indoor Air
Output Form 3D Non-Residential Worker Groundwater to Indoor Air
Output Form 3E Non-Residential Worker Soil Gas to Indoor Air
Output Form 3F Non-Residential Worker Indoor Air
Output Form 4A Soil to Groundwater - Forward Mode
Output Form 4B Groundwater to Groundwater - Forward Mode
Output Form 4C Soil to Surface Water - Forward Mode
Output Form 4D Groundwater to Surface Water - Forward Mode
Output Form 4E Soil to Groundwater - Backward Mode
Output Form 4F Groundwater to Groundwater - Backward Mode
Output Form 4G Soil to Surface Water - Backward Mode
Output Form 4H Groundwater to Surface Water - Backward Mode
Output Section 4 - Contaminant Migration Worksheets
Output Section 3 - Vapor Intrusion Calculators
TOC
Description
DATA INPUT SHEETS
Check box
if included
Input Section 1 - Exposure Pathways & Parameters
Input Section 2 - Exposure Point Concentrations
DATA OUTPUT SHEETS
Output Section 1 - Summary Output for All Calculators
Output Section 2 - Direct Contact Soil and Groundwater Calculators
North Carolina DEQ Risk Calculator
Complete Exposure Pathways
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-4/SG-DUP
Note: Risk output will only be calculated for complete exposure pathways.
Receptor Pathway
Check box if
pathway
complete
Soil
Groundwater Use
Soil
Groundwater Use
Construction Worker Soil
Soil
Surface Water
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Source Soil
Source Groundwater
Source Soil
Source Groundwater
Input Form 1A
VAPOR INTRUSION PATHWAYS
DIRECT CONTACT SOIL AND WATER PATHWAYS
Resident
Non-Residential Worker
Recreator/Trespasser
Resident
Non-Residential Worker
CONTAMINANT MIGRATION PATHWAYS
Groundwater
Surface Water
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-4/SG-DUP
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(ug/m3)
Notes:CAS Number Chemical
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection
Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity Value
(Screening
Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC Flag
(Y/N)
Rationale for
Selection or
Deletion
104 67-64-1 Acetone ug/m3
21.3 71-43-2 Benzene ug/m3
12 75-15-0 Carbon Disulfide ug/m3
6.52 110-83-8 Cyclohexene ug/m3
15.3 100-41-4 Ethylbenzene ug/m3
1.52 109-99-9 ~Tetrahydrofuran ug/m3
16.5 142-82-5 Heptane, N-ug/m3
25.3 110-54-3 Hexane, N-ug/m3
11.9 67-63-0 Isopropanol ug/m3
30.2 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3
7.91 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)ug/m3
18.4 91-20-3 ~Naphthalene ug/m3
89.4 115-07-1 Propylene ug/m3
2.98 100-42-5 Styrene ug/m3
2.44 127-18-4 Tetrachloroethylene ug/m3
42.3 108-88-3 Toluene ug/m3
0.672 79-01-6 Trichloroethylene ug/m3
51.6 95-63-6 Trimethylbenzene, 1,2,4-ug/m3
19.8 108-67-8 Trimethylbenzene, 1,3,5-ug/m3
57 108-38-3 Xylene, m-ug/m3
17.6 95-47-6 Xylene, o-ug/m3
Input Form 2D
Soil Gas Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-4/SG-DUP
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use*NC NC NC
Soil NC NC NC
Groundwater Use*NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water*NC NC NC
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 8.9E-06 2.7E-01 NO
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 6.8E-07 2.1E-02 NO
Indoor Air NC NC NC
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
3. NM = Not Modeled
4. NC = Pathway not calculated
DIRECT CONTACT SOIL AND WATER CALCULATORS
Resident
Non-Residential Worker
Recreator/Trespasser
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based
closure.
Surface Water Exceedence of 2B at Receptor?
Exceedence of 2B at Receptor?
VAPOR INTRUSION CALCULATORS
Resident
Non-Residential Worker
CONTAMINANT MIGRATION CALCULATORS
Target Receptor Concentrations Exceeded?
Groundwater Exceedence of 2L at Receptor?
Exceedence of 2L at Receptor?
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
Notes:
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-4/SG-DUP
CAS #Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 104 3.12 -6.5E+03 9.7E-05
71-43-2 Benzene 21.3 0.639 3.6E-01 6.3E+00 1.8E-06 2.0E-02
75-15-0 Carbon Disulfide 12 0.36 -1.5E+02 4.9E-04
110-83-8 Cyclohexene 6.52 0.1956 -2.1E+02 1.9E-04
100-41-4 Ethylbenzene 15.3 0.459 1.1E+00 2.1E+02 4.1E-07 4.4E-04
109-99-9 ~Tetrahydrofuran 1.52 0.0456 -4.2E+02 2.2E-05
142-82-5 Heptane, N-16.5 0.495 -8.3E+01 1.2E-03
110-54-3 Hexane, N-25.3 0.759 -1.5E+02 1.0E-03
67-63-0 Isopropanol 11.9 0.357 -4.2E+01 1.7E-03
78-93-3 Methyl Ethyl Ketone (2-Butanone)30.2 0.906 -1.0E+03 1.7E-04
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)7.91 0.2373 -6.3E+02 7.6E-05
91-20-3 ~Naphthalene 18.4 0.552 8.3E-02 6.3E-01 6.7E-06 1.8E-01
115-07-1 Propylene 89.4 2.682 -6.3E+02 8.6E-04
100-42-5 Styrene 2.98 0.0894 -2.1E+02 8.6E-05
127-18-4 Tetrachloroethylene 2.44 0.0732 1.1E+01 8.3E+00 6.8E-09 1.8E-03
108-88-3 Toluene 42.3 1.269 -1.0E+03 2.4E-04
79-01-6 Trichloroethylene 0.672 0.02016 4.8E-01 4.2E-01 4.2E-08 9.7E-03
95-63-6 Trimethylbenzene, 1,2,4-51.6 1.548 -1.3E+01 2.5E-02
108-67-8 Trimethylbenzene, 1,3,5-19.8 0.594 -1.3E+01 9.5E-03
108-38-3 Xylene, m-57 1.71 -2.1E+01 1.6E-02
95-47-6 Xylene, o-17.6 0.528 -2.1E+01 5.1E-03
Cumulative:8.9E-06 2.7E-01
All concentrations are in ug/m3
Output Form 3B
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Soil Gas to Indoor Air
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-4/SG-DUP
CAS #Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 104 1.04 -2.7E+04 7.7E-06
71-43-2 Benzene 21.3 0.213 1.6E+00 2.6E+01 1.4E-07 1.6E-03
75-15-0 Carbon Disulfide 12 0.12 -6.1E+02 3.9E-05
110-83-8 Cyclohexene 6.52 0.0652 -8.8E+02 1.5E-05
100-41-4 Ethylbenzene 15.3 0.153 4.9E+00 8.8E+02 3.1E-08 3.5E-05
109-99-9 ~Tetrahydrofuran 1.52 0.0152 -1.8E+03 1.7E-06
142-82-5 Heptane, N-16.5 0.165 -3.5E+02 9.4E-05
110-54-3 Hexane, N-25.3 0.253 -6.1E+02 8.3E-05
67-63-0 Isopropanol 11.9 0.119 -1.8E+02 1.4E-04
78-93-3 Methyl Ethyl Ketone (2-Butanone)30.2 0.302 -4.4E+03 1.4E-05
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)7.91 0.0791 -2.6E+03 6.0E-06
91-20-3 ~Naphthalene 18.4 0.184 3.6E-01 2.6E+00 5.1E-07 1.4E-02
115-07-1 Propylene 89.4 0.894 -2.6E+03 6.8E-05
100-42-5 Styrene 2.98 0.0298 -8.8E+02 6.8E-06
127-18-4 Tetrachloroethylene 2.44 0.0244 4.7E+01 3.5E+01 5.2E-10 1.4E-04
108-88-3 Toluene 42.3 0.423 -4.4E+03 1.9E-05
79-01-6 Trichloroethylene 0.672 0.00672 3.0E+00 1.8E+00 2.2E-09 7.7E-04
95-63-6 Trimethylbenzene, 1,2,4-51.6 0.516 -5.3E+01 2.0E-03
108-67-8 Trimethylbenzene, 1,3,5-19.8 0.198 -5.3E+01 7.5E-04
108-38-3 Xylene, m-57 0.57 -8.8E+01 1.3E-03
95-47-6 Xylene, o-17.6 0.176 -8.8E+01 4.0E-04
Cumulative:6.8E-07 2.1E-02
All concentrations are in ug/m3
Output Form
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk,
no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
SG-1 through SG-4 (worst case)
North Carolina Department of Environmental Quality
Risk Calculator
Assistance League
3405 S. Tryon Street
Brownfields
June 2021
May 2021 EPA RSL Table
7/6/2021
Prepared By:JCG
ACB
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-1 through SG-4 (worst case)
Form No.
Input Form 1A Complete Exposure Pathways
Input Form 1B Exposure Factors and Target Risks
Input Form 1C Contaminant Migration Parameters
Input Form 1D Sample Statistics
Input Form 2A Soil Exposure Point Concentration Table
Input Form 2B Groundwater Exposure Point Concentration Table
Input Form 2C Surface Water Exposure Point Concentration Table
Input Form 2D Soil Gas Exposure Point Concentration Table
Input Form 2E Indoor Air Exposure Point Concentration Table
Output Form 1A Risk for Individual Pathways
Output Form 1B Sitewide Risk
Output Form 2A Resident Soil
Output Form 2B Resident Groundwater Use
Output Form 2C Non-Residential Worker Soil
Output Form 2D Non-Residential Worker Groundwater Use
Output Form 2E Construction Worker Soil
Output Form 2F Recreator/Trespasser Soil
Output Form 2G Recreator/Trespasser Surface Water
Output Form 3A Resident Groundwater to Indoor Air
Output Form 3B Resident Soil Gas to Indoor Air
Output Form 3C Resident Indoor Air
Output Form 3D Non-Residential Worker Groundwater to Indoor Air
Output Form 3E Non-Residential Worker Soil Gas to Indoor Air
Output Form 3F Non-Residential Worker Indoor Air
Output Form 4A Soil to Groundwater - Forward Mode
Output Form 4B Groundwater to Groundwater - Forward Mode
Output Form 4C Soil to Surface Water - Forward Mode
Output Form 4D Groundwater to Surface Water - Forward Mode
Output Form 4E Soil to Groundwater - Backward Mode
Output Form 4F Groundwater to Groundwater - Backward Mode
Output Form 4G Soil to Surface Water - Backward Mode
Output Form 4H Groundwater to Surface Water - Backward Mode
Output Section 4 - Contaminant Migration Worksheets
Output Section 3 - Vapor Intrusion Calculators
TOC
Description
DATA INPUT SHEETS
Check box
if included
Input Section 1 - Exposure Pathways & Parameters
Input Section 2 - Exposure Point Concentrations
DATA OUTPUT SHEETS
Output Section 1 - Summary Output for All Calculators
Output Section 2 - Direct Contact Soil and Groundwater Calculators
North Carolina DEQ Risk Calculator
Complete Exposure Pathways
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-1 through SG-4 (worst case)
Note: Risk output will only be calculated for complete exposure pathways.
Receptor Pathway
Check box if
pathway
complete
Soil
Groundwater Use
Soil
Groundwater Use
Construction Worker Soil
Soil
Surface Water
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Source Soil
Source Groundwater
Source Soil
Source Groundwater
Resident
Non-Residential Worker
CONTAMINANT MIGRATION PATHWAYS
Groundwater
Surface Water
Input Form 1A
VAPOR INTRUSION PATHWAYS
DIRECT CONTACT SOIL AND WATER PATHWAYS
Resident
Non-Residential Worker
Recreator/Trespasser
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-1 through SG-4 (worst case)
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(ug/m3)
Notes:CAS Number Chemical
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection
Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity Value
(Screening
Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC Flag
(Y/N)
Rationale for
Selection or
Deletion
104 67-64-1 Acetone ug/m3
31.7 71-43-2 Benzene ug/m3
81.1 75-15-0 Carbon Disulfide ug/m3
0.698 56-23-5 Carbon Tetrachloride ug/m3
4.83 67-66-3 Chloroform ug/m3
6.52 110-82-7 Cyclohexane ug/m3
180 75-71-8 Dichlorodifluoromethane ug/m3
2.74 141-78-6 Ethyl Acetate ug/m3
101 100-41-4 Ethylbenzene ug/m3
4.76 109-99-9 ~Tetrahydrofuran ug/m3
58.9 142-82-5 Heptane, N-ug/m3
120 110-54-3 Hexane, N-ug/m3
11.9 67-63-0 Isopropanol ug/m3
30.2 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3
7.91 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)ug/m3
1.96 75-09-2 Methylene Chloride ug/m3
18.8 91-20-3 ~Naphthalene ug/m3
89.4 115-07-1 Propylene ug/m3
2.98 100-42-5 Styrene ug/m3
2.44 127-18-4 Tetrachloroethylene ug/m3
454 108-88-3 Toluene ug/m3
1.55 120-82-1 Trichlorobenzene, 1,2,4-ug/m3
0.672 79-01-6 Trichloroethylene ug/m3
23.9 75-69-4 Trichlorofluoromethane ug/m3
51.6 95-63-6 Trimethylbenzene, 1,2,4-ug/m3
19.8 108-67-8 Trimethylbenzene, 1,3,5-ug/m3
4.27 108-05-4 Vinyl Acetate ug/m3
348 108-38-3 Xylene, m-ug/m3
94.4 95-47-6 Xylene, o-ug/m3
Input Form 2D
Soil Gas Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-1 through SG-4 (worst case)
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use*NC NC NC
Soil NC NC NC
Groundwater Use*NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water*NC NC NC
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 1.3E-05 4.8E-01 NO
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 1.0E-06 3.8E-02 NO
Indoor Air NC NC NC
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
3. NM = Not Modeled
4. NC = Pathway not calculated
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based
closure.
Surface Water Exceedence of 2B at Receptor?
Exceedence of 2B at Receptor?
VAPOR INTRUSION CALCULATORS
Resident
Non-Residential Worker
CONTAMINANT MIGRATION CALCULATORS
Target Receptor Concentrations Exceeded?
Groundwater Exceedence of 2L at Receptor?
Exceedence of 2L at Receptor?
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
Notes:
DIRECT CONTACT SOIL AND WATER CALCULATORS
Resident
Non-Residential Worker
Recreator/Trespasser
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-1 through SG-4 (worst case)
CAS #Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 104 3.12 -6.5E+03 9.7E-05
71-43-2 Benzene 31.7 0.951 3.6E-01 6.3E+00 2.6E-06 3.0E-02
75-15-0 Carbon Disulfide 81.1 2.433 -1.5E+02 3.3E-03
56-23-5 Carbon Tetrachloride 0.698 0.02094 4.7E-01 2.1E+01 4.5E-08 2.0E-04
67-66-3 Chloroform 4.83 0.1449 1.2E-01 2.0E+01 1.2E-06 1.4E-03
110-82-7 Cyclohexane 6.52 0.1956 -1.3E+03 3.1E-05
75-71-8 Dichlorodifluoromethane 180 5.4 -2.1E+01 5.2E-02
141-78-6 Ethyl Acetate 2.74 0.0822 -1.5E+01 1.1E-03
100-41-4 Ethylbenzene 101 3.03 1.1E+00 2.1E+02 2.7E-06 2.9E-03
109-99-9 ~Tetrahydrofuran 4.76 0.1428 -4.2E+02 6.8E-05
142-82-5 Heptane, N-58.9 1.767 -8.3E+01 4.2E-03
110-54-3 Hexane, N-120 3.6 -1.5E+02 4.9E-03
67-63-0 Isopropanol 11.9 0.357 -4.2E+01 1.7E-03
78-93-3 Methyl Ethyl Ketone (2-Butanone)30.2 0.906 -1.0E+03 1.7E-04
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)7.91 0.2373 -6.3E+02 7.6E-05
75-09-2 Methylene Chloride 1.96 0.0588 1.0E+02 1.3E+02 5.8E-10 9.4E-05
91-20-3 ~Naphthalene 18.8 0.564 8.3E-02 6.3E-01 6.8E-06 1.8E-01
115-07-1 Propylene 89.4 2.682 -6.3E+02 8.6E-04
100-42-5 Styrene 2.98 0.0894 -2.1E+02 8.6E-05
127-18-4 Tetrachloroethylene 2.44 0.0732 1.1E+01 8.3E+00 6.8E-09 1.8E-03
108-88-3 Toluene 454 13.62 -1.0E+03 2.6E-03
120-82-1 Trichlorobenzene, 1,2,4-1.55 0.0465 -4.2E-01 2.2E-02
79-01-6 Trichloroethylene 0.672 0.02016 4.8E-01 4.2E-01 4.2E-08 9.7E-03
75-69-4 Trichlorofluoromethane 23.9 0.717 --
95-63-6 Trimethylbenzene, 1,2,4-51.6 1.548 -1.3E+01 2.5E-02
108-67-8 Trimethylbenzene, 1,3,5-19.8 0.594 -1.3E+01 9.5E-03
108-05-4 Vinyl Acetate 4.27 0.1281 -4.2E+01 6.1E-04
108-38-3 Xylene, m-348 10.44 -2.1E+01 1.0E-01
95-47-6 Xylene, o-94.4 2.832 -2.1E+01 2.7E-02
Cumulative:1.3E-05 4.8E-01
All concentrations are in ug/m3
Output Form 3B
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Soil Gas to Indoor Air
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: SG-1 through SG-4 (worst case)
CAS #Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 104 1.04 -2.7E+04 7.7E-06
71-43-2 Benzene 31.7 0.317 1.6E+00 2.6E+01 2.0E-07 2.4E-03
75-15-0 Carbon Disulfide 81.1 0.811 -6.1E+02 2.6E-04
56-23-5 Carbon Tetrachloride 0.698 0.00698 2.0E+00 8.8E+01 3.4E-09 1.6E-05
67-66-3 Chloroform 4.83 0.0483 5.3E-01 8.6E+01 9.1E-08 1.1E-04
110-82-7 Cyclohexane 6.52 0.0652 -5.3E+03 2.5E-06
75-71-8 Dichlorodifluoromethane 180 1.8 -8.8E+01 4.1E-03
141-78-6 Ethyl Acetate 2.74 0.0274 -6.1E+01 8.9E-05
100-41-4 Ethylbenzene 101 1.01 4.9E+00 8.8E+02 2.1E-07 2.3E-04
109-99-9 ~Tetrahydrofuran 4.76 0.0476 -1.8E+03 5.4E-06
142-82-5 Heptane, N-58.9 0.589 -3.5E+02 3.4E-04
110-54-3 Hexane, N-120 1.2 -6.1E+02 3.9E-04
67-63-0 Isopropanol 11.9 0.119 -1.8E+02 1.4E-04
78-93-3 Methyl Ethyl Ketone (2-Butanone)30.2 0.302 -4.4E+03 1.4E-05
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)7.91 0.0791 -2.6E+03 6.0E-06
75-09-2 Methylene Chloride 1.96 0.0196 1.2E+03 5.3E+02 1.6E-11 7.5E-06
91-20-3 ~Naphthalene 18.8 0.188 3.6E-01 2.6E+00 5.2E-07 1.4E-02
115-07-1 Propylene 89.4 0.894 -2.6E+03 6.8E-05
100-42-5 Styrene 2.98 0.0298 -8.8E+02 6.8E-06
127-18-4 Tetrachloroethylene 2.44 0.0244 4.7E+01 3.5E+01 5.2E-10 1.4E-04
108-88-3 Toluene 454 4.54 -4.4E+03 2.1E-04
120-82-1 Trichlorobenzene, 1,2,4-1.55 0.0155 -1.8E+00 1.8E-03
79-01-6 Trichloroethylene 0.672 0.00672 3.0E+00 1.8E+00 2.2E-09 7.7E-04
75-69-4 Trichlorofluoromethane 23.9 0.239 --
95-63-6 Trimethylbenzene, 1,2,4-51.6 0.516 -5.3E+01 2.0E-03
108-67-8 Trimethylbenzene, 1,3,5-19.8 0.198 -5.3E+01 7.5E-04
108-05-4 Vinyl Acetate 4.27 0.0427 -1.8E+02 4.9E-05
108-38-3 Xylene, m-348 3.48 -8.8E+01 7.9E-03
95-47-6 Xylene, o-94.4 0.944 -8.8E+01 2.2E-03
Cumulative:1.0E-06 3.8E-02
All concentrations are in ug/m3
Output Form
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk,
no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator

Attachment B

Vapor Intrusion Mitigation Design Drawings
Sheets VM-1, VM-1A, VM-1B, VM-1C, VM-1D, VM-1E, VM-2, and VM-2A
DW
FECFEC
FECUNIT BA2.1
6.71% UP5% DN
6% DN717.00 EL.
716.64 EL.
EV PARKING
GAS
TRASH 1
FUTURE TENANT
UPFIT
ELEV 3
ELEV 2 LONG TERM BIKESTORAGEUNIT A6
134
UNIT B3.1
STAIR 4
LONG TERM BIKE
STORAGE &
REPAIR
UNIT B6.2
UNIT A2.2
114
LOADING
STAIR 1
UNIT A2.2
UNIT A2.2 (TYPE A)
117
UNIT BA2.1 (TYPE A)
112
ELEV 4
PET SPA
LOBBY
TEL/DATA
MAINTENANCE
OPEN WORK
SPACE
ELECTRICALWATERLOBBY/LOUNGE
ELECTRICAL
UNIT C2.1 (TYPE A)
131
MAILROOM EXITPASSAGEWAYPARKING CORRIDORCORRIDORSTAIR 2
STAIR 3
ELEV 1
UNIT B6.1
132
TRASH 2
1% UP1% UP1% UP718.64 EL.
STAIR 5
LIGHTWELLLIGHTWELLLIGHTWELLLIGHTWELLLIGHTWELLLIGHTWELLLIGHTWELL LIGHTWELLLIGHTWELL
ELEC ROOM A
ACCESS GATE
FENCE
SPEED
HUMP
SPEED
HUMP
FITNESS FLEX ROOM
VESTIBULE
OFFICE 1
OFFICE 2 LEASING S8x18.4F.S.F.S.F.S.F.S.F.S.
F.S.F.S.F.S.F.S.F.S.F.S.F.S.F.S.F.S.F.S.F.S.F.S.F.S.F.S.F.S.
F.S.
F.S.
717' - 0"
717' - 0"
717' - 0"
717' - 0"
718' - 7 5/8"
+722.60'
+722.30'
+723.26'
+723.26'+721.09'
+718.31'
+717.00'
+716.90'
+717.64'
+717.00'
+716.70'
+716.67'+717.00'+716.67'
+717.53'
+717.00'
+717.26'
+719.20'
+719.63'
+721.80'
+722.06'
+722.74'
+723.22'
+723.66'+723.69'
+723.03'+723.30'
+723.24'
+722.35'
718' - 7 5/8"
717' - 7 5/8"
717' - 7 5/8"
718' - 7 5/8"
716' - 7 5/8"
716' - 7 5/8"
718' - 7 5/8"
716' - 7 5/8"
20" MAT SLABT.O.F. = 712' - 0"
20" MAT SLABT.O.F. = 712' - 4"
717' - 0"
TYP. AT INT. COL.
TYP. AT INT. COL.
TYP. AT INT. COL.
TYP. AT INT. COL.TYP. AT CMU WALLTYP. AT CMU WALL
TYP. AT CMU WALLTYP.
TYP.
TYP.
STORM WATER RETENTION
SYSTEM, BY OTHERS
STORM WATER RETENTION
SYSTEM, BY OTHERS
STORM WATER RETENTION
SYSTEM, BY OTHERS TYP. AT CMU WALLT.O.W.=720'-7 5/8"
T.O.W.=720'-7 5/8"
T.O.W.=720'-7 5/8"
T.O.W.=723'-10 5/8"
T.O.W.=723'-4 5/8"
T.O.W.=723'-4 5/8"
T.O.W.=723'-1 5/8"T.O.W.=723'-1 5/8"
T.O.W.=722'-0 5/8"
T.O.W.=721'-6 5/8"
T.O.W.=721'-0 5/8"
T.O.W.=720'-6 5/8"
T.O.W.=719'-10 5/8"
717' - 0"
717' - 0"
717' - 0"RAMP DOWN717' - 0"
717' - 0"
718' - 7 5/8"718' - 7 5/8"
718' - 7 5/8"RAMP DOWNRAMP DOWN42"Wx26"D STRAP BEAM
42"Wx24"D STRAP BEAM
42"Wx26"D STRAP BEAM
42"Wx24"D STRAP BEAM
42"Wx26"D STRAP BEAM
42"Wx24"D STRAP BEAM
715' - 2 5/8"
715' - 2 5/8"RAMP DOWNRAMP DOWN
RAMP UP716' - 7 5/8"
VARIES
717' - 0"717' - 0"RAMP UPT.O.W.=723'-1 5/8"
+723.35'
+720.77'
+719.12'
+718.64'
+718.64'
+718.64'
+718.64'
+718.64'
+717.25'
+716.67'
+716.67'
+718.76'
717' - 0"
717' - 0"
718' - 9 1/8"
717' - 7 5/8"
C-3
C-3
E-1
E-2
E-3
E-5
E-4
E-6
E-7
E-8
MP-1
MP-2
MP-3
MP-4
MP-5
MP-6
MP-7 MP-8
MP-9
MP-10
MP-11
MP-12
MP-13
MP-14
MP-15
MP-16
MP-18
MP-17
TMP-1
FUTURE TENANT
UPFIT
LOBBY ELECTRICALSTAIR 2717' - 0"
+717.00'
ELEV 2ELEV 1
OFFICE 1
OFFICE 2 LEASING
+716.67'
+716.67'LONG TERM BIKEEXITPASSAGEWAYSTAIR 3
+716.90'
717' - 7 5/8"
717' - 7 5/8"
LONG TERM BIKE
STORAGE &
REPAIR
PET SPA
F.S.F.S.+723.69'
TYP.
718' - 7 5/8"
H&H NO. MLR-001
VAPOR MITIGATION PLAN
PREPARED BY:
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
VAPOR INTRUSION
MITIGATION SYSTEM
PLAN VIEW LAYOUT
LEVEL 1MODERA LOSO3405 S. TRYON STREETCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 25050-21-060DEVELOPER:
ODELL ASSOCIATES, INC.
400 S. TRYON STREET
SUITE 1300
CHARLOTTE, NORTH
CAROLINA
VM-1
PROFESSIONAL
APPROVAL
LEGEND
COLUMN AND FOOTING
OUTDOOR OR OPEN AIR SPACE
EXTENT OF VAPOR BARRIER
HORIZONTAL COLLECTION PIPING OR SOIL GAS COLLECTOR MAT
3" DIA SCH 40 SOLID PVC PIPE
4" DIA SCH 40 SOLID PVC VERTICAL RISER WITH EXHAUST IDENTIFICATION NUMBER
2" DIA SOLID PVC PRESSURE MONITORING POINT WITH FLUSH-MOUNTED COVER (SEE
SPECIFICATION #7)
TEMPORARY MONITORING POINT LOCATION
PROPOSED LOCATION FOR TURNED-DOWN SLAB TO SEPARATE SUB-SLAB STONE
LAYERS - SEE DETAIL 18/VM-2A
APPROXIMATE LOCATION FOR VAPOR BARRIER ALONG VERTICAL WALL - REFER TO
DETAILS 15 & 17/VM-2A.
PROPOSED INDOOR AIR SAMPLE LOCATION
MP-1
E-1
E-4
E-5
E-3
E-8
E-6
INSET #1
INSET #2
INSET #3
INSET #4
1"=10'
1"=10'
1"=10'
1"=10'
SEE INSET #1
SEE INSET #2
SEE INSET #3
SEE INSET #4
PARKING
DECK
9/23
VM-2/2A
2
VM-220
VM-2A
13
VM-2
18
VM-2A
18
VM-2A
16
VM-2A
6/23
VM-2/2A
8/23
VM-2/2A
22
VM-2A
22
VM-2A
17
VM-2A
17
VM-2A
12
VM-2
20
VM-2A
21
VM-2A
9/23
VM-2/2A
14
VM-2A
14
VM-2A
15
VM-2A
18
VM-2A
18
VM-2A
17
VM-2A
18
VM-2A
18
VM-2A
8/23
VM-2/2A
12
VM-2
20
VM-2A
18
VM-2A
18
VM-2A
6/23
VM-2/2A5
VM-2
4
VM-2
1
VM-2
3
VM-2
3
VM-2
12
VM-2
16
VM-2A
16
VM-2A
16
VM-2A
10/11
VM-2
10/11
VM-2
10/11
VM-2
20
VM-2A
3" SCH 40 PVC
90 DEGREE
ELBOW, TYP.
3" SCH 40 PVC 45
DEGREE ELBOW,
TYP.
3" SCH 40 PVC
TEE, TYP.
3" PVC
TERMINATION
SCREEN, TYP.
3" PVC TERMINATION
SCREEN, TYP.
3" PVC TERMINATION
SCREEN, TYP.
2" PVC TERMINATION
SCREEN, TYP.
DATE: 10-24-22
10/24/22
REVISIONS
REV DATE DESCRIPTION
0 05/02/22 DEQ SUBMISSION
1 07/29/22 REVISION 1 SUBMISSION
2 10/24/22 REVISION 2 SUBMISSION
TMP-1
25
VM-2A
IAS-1
IAS-3 IAS-5
IAS-8
IAS-9
IAS-7
IAS-6
IAS-4
IAS-2
S:\AAA-Master Projects\Mill Creek - MLR\MLR-001 - Assistance League\VIMP\Figures\VIMS Design_R2.dwg
FEC
FEC
FECFECDN
UNIT A2.2
216
STAIR 1
ST1 STAIR 2
ST2
STAIR 3
ST3
STAIR 4
ST4
UNIT A2.2 (TYPE A)
217
UNIT A2.2
214
UNIT BA2.1 (TYPE A)
212
UNIT BA2.1
210
UNIT AD3.1
205
UNIT AD3.1
203
UNIT A8
219
UNIT S3 (TYPE A)
220
UNIT AD2.1
222
UNIT AD2.1
224
UNIT AU.1
225
UNIT AU.1
226
UNIT AU.1
227
UNIT B2.1
228
UNIT S1.1
229
UNIT B1.2
230
UNIT B6.1
232
UNIT B3.1
233
UNIT A6
234
UNIT C2.1
231
UNIT B6.2
218
TRASH 1
T201
BIKE STORAGE
AM201
STORAGE
P208
MECH
U202
MECH
U205
MECH
U203
ELEV 3
EL3
MAINTENANCE
STORAGE
P204
STORAGE CAGE
P205
MAINTENANCE
OFFICE
P206
UNISEX
P207
MAINTENANCE
OPEN WORK SPACE
P203
ELEC ROOM A
U204A
STAIR 5
ST5
ELEV 2
EL2
ELEV 1
EL1
SHAFT (INTAKE)
X1
OPEN TO BELOWCORRIDORC201CORRIDOR
C201
ELEV 4
EL4
TRASH 2
T202
UTILITY
U201 CORRIDORC2013FC
VESTIBULE
3FC3FC
5.68%E-1
E-2
E-3
E-5
E-4
E-6
E-7
E-8
E-8
E-7
E-5
H&H NO. MLR-001
VAPOR MITIGATION PLAN
PREPARED BY:
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
VAPOR INTRUSION
MITIGATION SYSTEM
PLAN VIEW LAYOUT
LEVEL 2MODERA LOSO3405 S. TRYON STREETCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 25050-21-060DEVELOPER:
ODELL ASSOCIATES, INC.
400 S. TRYON STREET
SUITE 1300
CHARLOTTE, NORTH
CAROLINA
VM-1A
PROFESSIONAL
APPROVAL
LEGEND
4" DIA SCH 40 SOLID PVC PIPE - MOUNTED IN FLOOR (SEE DETAIL 19/VM-2A)
FLOOR PENETRATION LOCATION 4" DIA SCH 40 SOLID PVC VERTICAL RISER
WITH EXHAUST IDENTIFICATION NUMBER
CEILING PENETRATION LOCATION 4" DIA SCH 40 SOLID PVC VERTICAL
RISER WITH EXHAUST IDENTIFICATION NUMBER
E-1
E-8
19
VM-2A
19
VM-2A
DATE: 10-24-22
10/24/22
REVISIONS
REV DATE DESCRIPTION
0 05/02/22 DEQ SUBMISSION
1 07/29/22 REVISION 1 SUBMISSION
2 10/24/22 REVISION 2 SUBMISSION
S:\AAA-Master Projects\Mill Creek - MLR\MLR-001 - Assistance League\VIMP\Figures\VIMS Design_R2.dwg
FEC
FEC
FECFECFEC
CORRIDOR
C301
PARKING
P301
UNIT AD5.1
356
UNIT A5
357
UNIT BA.1
358
UNIT A3.1
359
UNIT A3.1
304
UNIT BA.2
302
UNIT B5.1
301
UNIT AD3.1
303
UNIT AD3.1
305
UNIT BA2.1
310
UNIT BA2.1 (TYPE A)
312
UNIT A2.2
314
UNIT A2.2
316
UNIT A2.2 (TYPE A)
317
UNIT B6.2
318
UNIT A8
319
UNIT S3
320
UNIT AD2.1
322
UNIT AD2.1
324
UNIT AU.1
325
UNIT AU.1
326
UNIT AU.1
327
UNIT B2.1
328
UNIT S1.1
329
UNIT B1.2
330
UNIT B6.1
332
UNIT C2.1
331
UNIT B3.1
333
UNIT A6
334
TRASH 1
T301
BIKE STORAGE
AM301
STORAGE
P308
UTILITY
U302
MECH
U305
UTILITY
U301
MECH
U303
5%ELEV 4
EL4
TRASH 2
T302
POOL EQUIPMENT
ROOM
P302STAIR 1
ST1
ELEV 2
EL2
ELEV 1
EL1
SHAFT (INTAKE)
X3
ELEC ROOM A
U304A
CORRIDOR
C301
3FC
CORRIDOR
C301
STAIR 5
ST5
STAIR 4
ST4
CORRIDOR
C301
STAIR 2
ST2
STAIR 3
ST3
ELEV 3
EL3
MECH SHAFT B
3FC3FC3FC
E-1
E-2
E-3
E-4
E-6
E-8
E-7
E-5
E-4
E-3
H&H NO. MLR-001
VAPOR MITIGATION PLAN
PREPARED BY:
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
VAPOR INTRUSION
MITIGATION SYSTEM
PLAN VIEW LAYOUT
LEVEL 3MODERA LOSO3405 S. TRYON STREETCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 25050-21-060DEVELOPER:
ODELL ASSOCIATES, INC.
400 S. TRYON STREET
SUITE 1300
CHARLOTTE, NORTH
CAROLINA
VM-1B
PROFESSIONAL
APPROVAL
LEGEND
4" DIA SCH 40 SOLID PVC PIPE - MOUNTED IN FLOOR (SEE DETAIL 19/VM-2A)
FLOOR PENETRATION LOCATION 4" DIA SCH 40 SOLID PVC VERTICAL RISER
WITH EXHAUST IDENTIFICATION NUMBER
CEILING PENETRATION LOCATION 4" DIA SCH 40 SOLID PVC VERTICAL
RISER WITH EXHAUST IDENTIFICATION NUMBER
E-1
E-4
19
VM-2A
DATE: 10-24-22
10/24/22
REVISIONS
REV DATE DESCRIPTION
0 05/02/22 DEQ SUBMISSION
1 07/29/22 REVISION 1 SUBMISSION
2 10/24/22 REVISION 2 SUBMISSION
S:\AAA-Master Projects\Mill Creek - MLR\MLR-001 - Assistance League\VIMP\Figures\VIMS Design_R2.dwg
TV
TV
USBGFI GFI GFI
GFI
GFI
GFIGFI
USBUSBUSBUSB
USB USBUSBUSBUSBUSBUSBUSBUSBUSB FEC
FECFEC
FEC
FECFEC
FEC
COURTYARD D
36
UNIT AD3
403
UNIT AD3
405
CLUBROOM
AM401
UNIT BA2
410
UNIT BA2.2
412
UNIT A2.3
414
UNIT A2
416
UNIT A2
417
UNIT B5.2
418
UNIT AD2
419
UNIT AD2
420
UNIT AD2
422
UNIT AD2
424
UNIT AU
425
UNIT AU
426
UNIT AU
427
UNIT B2
428
UNIT S1
429
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430
UNIT B1
436
UNIT B1.3
437
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415
UNIT B1
409
UNIT B1.1
406
UNIT B1.1
447
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442
UNIT B1.1
454
UNIT B6
432 UNIT C2
431
UNIT B4
434
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435
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411
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441
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438
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440
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453
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407
UNIT BA1
408
UNIT A7
445
UNIT A7
444
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423
UNIT A7
421
UNIT B10.1
448
UNIT S2
450
UNIT B5
451
UNIT A3
449
UNIT A4
452
UNIT A2.1
455
UNIT C2
459
UNIT AD4
458
UNIT AD5
457
UNIT B8
456
COURTYARD A
102
UNIT A1
404
UNIT B3
433
TRASH 1
T401
STORAGE
P402
STORAGE
P401
ELEV 2
EL2
ELEV 1
EL1
ELEV 3
EL3
STAIR 4
ST4
ELEV 4
EL4
STAIR 1
ST1
UNIT B1
446
UNIT A1
413
ELEC ROOM A
U406
3FC3FC3FC3FC3FC
CORRIDOR
C401
UNIT B1
443
TRASH 2
T402
UTILITY
U404
ELEC ROOM B_C
U405
CORRIDOR
C401
COURTYARD B
38
STAIR 2
ST2
STAIR 3
ST3
ELEC D
U407
3FC
3FC
2.08%
UNIT A1.1
439
MECH SHAFT A
MECH SHAFT B
MECH SHAFT C
MECH SHAFT D1
MECH SHAFT D2
TELE/DATA
U441
3FC3FC3FC3FC
E-1
E-2
E-6
E-8
E-7
E-5
E-4
E-3 E-3
E-5
E-6
H&H NO. MLR-001
VAPOR MITIGATION PLAN
PREPARED BY:
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
VAPOR INTRUSION
MITIGATION SYSTEM
PLAN VIEW LAYOUT
LEVEL 4MODERA LOSO3405 S. TRYON STREETCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 25050-21-060DEVELOPER:
ODELL ASSOCIATES, INC.
400 S. TRYON STREET
SUITE 1300
CHARLOTTE, NORTH
CAROLINA
VM-1C
PROFESSIONAL
APPROVAL
LEGEND
4" DIA SCH 40 SOLID PVC PIPE - MOUNTED IN FLOOR (SEE DETAIL 19/VM-2A)
FLOOR PENETRATION LOCATION 4" DIA SCH 40 SOLID PVC VERTICAL RISER
WITH EXHAUST IDENTIFICATION NUMBER
CEILING PENETRATION LOCATION 4" DIA SCH 40 SOLID PVC VERTICAL
RISER WITH EXHAUST IDENTIFICATION NUMBER
E-1
E-5
19
VM-2A
19
VM-2A
DATE: 10-24-22
10/24/22
REVISIONS
REV DATE DESCRIPTION
0 05/02/22 DEQ SUBMISSION
1 07/29/22 REVISION 1 SUBMISSION
2 10/24/22 REVISION 2 SUBMISSION
S:\AAA-Master Projects\Mill Creek - MLR\MLR-001 - Assistance League\VIMP\Figures\VIMS Design_R2.dwg
TV
TV
USBUSBUSB
USBUSBUSBUSB
USBUSBUSB
USBFEC
CLUBROOM
UNIT AD3
503
UNIT AD3
505
UNIT BA2
510
UNIT BA2.2
512
UNIT A2.3
514
UNIT A2
516
UNIT A2
517
UNIT B5.2
518
UNIT AD2
519
UNIT AD2
520
UNIT AD2
522
UNIT AD2
524
UNIT AU
525
UNIT AU
527
UNIT B2
528
UNIT S1
529
UNIT B1
530
UNIT B1
536
UNIT B1.1
515
UNIT B1.1
506
UNIT B1.1
547
UNIT B1.1
554
UNIT B1
543
UNIT B6
532
UNIT C2
531
UNIT B4
534UNIT C1
535
UNIT A1
511
UNIT A1
538
UNIT A1 (TYPE A)
540
UNIT A1
553
UNIT BA1
507
UNIT BA1
508
UNIT BA1
545
UNIT BA1
544
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523
UNIT BA1
521
UNIT B5
551
UNIT BA
549
UNIT A4
552
UNIT A2.1
555
UNIT C2
559
UNIT AD4
558
UNIT AD5
557
UNIT B7
556
UNIT S4
502
UNIT A1
504
UNIT B3
533
TRASH 1
T501
STORAGE
P502
STAIR 1
ST1
UNIT B1
546
ELEV 2
EL2
ELEV 1
EL1ELEC ROOM AU502OFFICE 1
AM502
CORRIDOR
C502
UNIT B1.3
537
UNIT B1
509
UNIT A1
513
CORRIDOR
C502
COURTYARD B
38
STAIR 4
ST4
UNIT AU
526
UNIT B1
542
UNIT A1
541
ELEV 4
EL4
STORAGE
P501
TRASH 2
T502
UTILITY
U504
ELEC ROOM B_C
U503
COURTYARD B
38
STAIR 2
ST2
STAIR 3
ST3
CORRIDOR
C501
UNIT C1
548
UNIT S2
550
ELEV 3
EL3
ELEC D
U505
UNIT A1.1
539
MECH SHAFT A
MECH SHAFT B MECH SHAFT C
MECH SHAFT D1
MECH SHAFT D2
E-1
E-2
E-8
E-7
E-4
E-3
E-5
E-6
H&H NO. MLR-001
VAPOR MITIGATION PLAN
PREPARED BY:
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
VAPOR INTRUSION
MITIGATION SYSTEM
PLAN VIEW LAYOUT
LEVEL 5MODERA LOSO3405 S. TRYON STREETCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 25050-21-060DEVELOPER:
ODELL ASSOCIATES, INC.
400 S. TRYON STREET
SUITE 1300
CHARLOTTE, NORTH
CAROLINA
VM-1D
PROFESSIONAL
APPROVAL
LEGEND
FLOOR PENETRATION LOCATION 4" DIA SCH 40 SOLID PVC VERTICAL
RISER WITH EXHAUST IDENTIFICATION NUMBER
E-1
DATE: 10-24-22
10/24/22
REVISIONS
REV DATE DESCRIPTION
0 05/02/22 DEQ SUBMISSION
1 07/29/22 REVISION 1 SUBMISSION
2 10/24/22 REVISION 2 SUBMISSION
S:\AAA-Master Projects\Mill Creek - MLR\MLR-001 - Assistance League\VIMP\Figures\VIMS Design_R2.dwg
FEC
FECFEC
FEC
FECFEC
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603
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610
UNIT BA2.2
612
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614
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617
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618
UNIT AD2
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625
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649
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652
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655
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659
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658
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657
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656
UNIT B9
604
UNIT B3
633
UNIT C2
602
UNIT B5.2
601
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T601
STORAGE
P601
STORAGE
P602
TRASH 2
T602
UNIT B1
642
CORRIDOR
C602
STAIR 1
ST1
ELEV 2
EL2
ELEV 1
EL1
ELEC ROOM A
U601
STAIR 4
ST4
UNIT AU
626
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641
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648
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650
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EL4
CORRIDOR
C602
UTILITY
U602
ELEC ROOM B_C
U603
CORRIDOR
C601
STAIR 2
ST2
STAIR 3
ST3
ELEV 3
EL3
ELEC D
U604
MECH SHAFT D2
MECH SHAFT D1
MECH SHAFT CMECH SHAFT B
MECH SHAFT A
3FC
UNIT A1.1
639
E-1
E-2
E-8
E-7
E-4
E-3
E-5
E-6
E-3
H&H NO. MLR-001
VAPOR MITIGATION PLAN
PREPARED BY:
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
VAPOR INTRUSION
MITIGATION SYSTEM
PLAN VIEW LAYOUT
LEVEL 6MODERA LOSO3405 S. TRYON STREETCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 25050-21-060DEVELOPER:
ODELL ASSOCIATES, INC.
400 S. TRYON STREET
SUITE 1300
CHARLOTTE, NORTH
CAROLINA
VM-1E
PROFESSIONAL
APPROVAL
LEGEND
4" DIA SCH 40 SOLID PVC PIPE - MOUNTED IN FLOOR (SEE DETAIL 19/VM-2A)
FLOOR PENETRATION LOCATION 4" DIA SCH 40 SOLID PVC VERTICAL RISER
WITH EXHAUST IDENTIFICATION NUMBER
CEILING PENETRATION LOCATION 4" DIA SCH 40 SOLID PVC VERTICAL
RISER WITH EXHAUST IDENTIFICATION NUMBER
E-1
E-3
19
VM-2A
DATE: 10-24-22
10/24/22
REVISIONS
REV DATE DESCRIPTION
0 05/02/22 DEQ SUBMISSION
1 07/29/22 REVISION 1 SUBMISSION
2 10/24/22 REVISION 2 SUBMISSION
S:\AAA-Master Projects\Mill Creek - MLR\MLR-001 - Assistance League\VIMP\Figures\VIMS Design_R2.dwg
VIMS VAPOR LINER AND BASE COURSE (TYP)1
VAPOR BARRIER (SEE SPECIFICATION #2)
CONCRETE FLOOR SLAB
SUB-BASE
NTSVM-2
BASE COURSE - CLEAN # 57 STONE (WASHED
WITH NO FINES), MIN 5" THICK BENEATH VIMS
VAPOR BARRIER (SEE SPECIFICATION #2)
3" SCH 40 THREADED FLUSH JOINT
SLOTTED PVC PIPE SET WITHIN MIN 5"
BASE COURSE (SEE SPECIFICATION #3)
VAPOR BARRIER (SEE SPECIFICATION #2)
SUB-BASE
CONCRETE FLOOR SLAB
SLOTTED COLLECTION PIPE (TYPICAL)2
NTSVM-2
PVC TERMINATION
SCREEN
BASE COURSE
SUB-BASE
VIMS PIPING AT NON-BEARING INTERIOR CMU WALL TYP)
NTS
3
VM-2
SLOTTED 3" SCH 40 PVC
CMU WALL (VARIES)
VAPOR BARRIER
COLUMN BLOCKOUT
VIMS AT INTERIOR COLUMN (TYP)
NTS
4
VM-2
SUB-BASE
CONCRETE FLOOR SLAB
BASE COURSE
VAPOR BARRIER
T.O.F.
CIP CONCRETE COLUMN
CONCRETE FOOTING
T.O.C.
VAPOR BARRIER SEALED OUTSIDE
OF CONCRETE COLUMN PER
MANUFACTURER INSTRUCTIONS
SEE DETAIL 7/VM-2
VIMS AT EXTERIOR COLUMN (TYP)
NTS
5
VM-2
SUB-BASE
CONCRETE
FLOOR SLAB
BASE COURSE
VAPOR BARRIER
CIP CONCRETE COLUMN
VAPOR BARRIER SEALED
TO CONCRETE PER
MANUFACTURERS
INSTRUCTIONS
COLUMN BLOCKOUT
VAPOR BARRIER SEALED
TO CONCRETE ON EACH
SIDE OF COLUMN
SEE DETAIL 7/VM-2
COLUMN BLOCKOUT
VIMS PIPING AT INTERIOR COLUMN WITH RISER DUCT PIPING (TYP)
NTS
6
VM-2
SUB-BASE
BASE COURSE
VAPOR BARRIER
CONCRETE FOOTING
VAPOR BARRIER SEALED TO
PIPE PER MANUFACTURER
INSTRUCTIONS
SLOTTED 3" SCH 40 PVC
4" SCH 40 PVC
90-DEGREE ELBOW
4" SCH 40 PVC RISER DUCT PIPE
(SEE SPECIFICATIONS #5 & #6)
PIPE SLEEVE
(SEE SPECIFICATION #12)
4" TO 3" SCH 40
PVC REDUCER
SEE DETAIL 7/VM-2
VAPOR BARRIER SEALED OUTSIDE
OF CONCRETE COLUMN PER
MANUFACTURER INSTRUCTIONS
VIMS AT VERTICAL RISERS WITH 90 DEGREE ELBOW (TYP)
NTS
8
VM-2
BASE COURSE
SUB-BASE
4" SCH 40 PVC RISER DUCT PIPE
(SEE SPECIFICATION #4, #5 AND #6)
WALL OR COLUMN (VARIES)
4" SCH 40 PVC
90-DEGREE ELBOW4" TO 3" SCH 40
PVC REDUCER
SUPPORT PIPE AS NECESSARY
SLOTTED 3" SCH 40 PVC
VAPOR BARRIER SEALED TO PIPE
PER MANUFACTURER INSTRUCTIONS
VAPOR BARRIER
10
NTSVM-2
VIMS AT ELEVATOR PIT (TYP)
CONTINUOUS VAPOR BARRIER SEALED
PER MANUFACTURER INSTRUCTIONS
SUMP PIT
SUB-BASE
BASE COURSE
VAPOR BARRIER
WATERPROOFING MEMBRANE
(IF PRESENT - REFER TO ARCH. PLANS)
(SEE SPECIFICATION #13)
SEE DETAIL 11/VM-2
VAPOR BARRIER SEALED TO OUTSIDE OF
CONCRETE AND WATERPROOFING MEMBRANE
(WHERE PRESENT) PER MANUFACTURER
INSTRUCTIONS (SEE DETAIL 11/VM-2)
11
VM-2
SOIL SUB-BASE
VAPOR BARRIER
DRAINAGE MAT
(IF PRESENT)
CONCRETE
NTS
VIMS AT ELEVATOR PIT - WATERPROOFING DETAIL (TYP)
COMPATIBLE WATERPROOFING MEMBRANE
(IF PRESENT - REFER TO ARCH. PLANS)
(SEE SPECIFICATION #13)
VIMS PIPING AT INTERIOR CONCRETE WALL (TYP)
NTS
12
VM-2
SUB-BASE
BASE COURSE
VAPOR BARRIER
SOLID TO SLOTTED 3" SCH 40 PVC PIPE
TRANSITION (SLIP COUPLING OR
THREADED JOINT)
VAPOR BARRIER SEALED TO
PIPE PER MANUFACTURER
INSTRUCTIONS
PIPE
SLEEVE
VAPOR BARRIER SEALED TO OUTSIDE
OF CONCRETE AND WATERPROOFING
MEMBRANE (IF PRESENT) PER
MANUFACTURER INSTRUCTIONS - SEE
DETAIL 9/VM-2
VIMS PIPING AT CMU WALL SLAB STEP (TYP)
NTS
13
VM-2
SUB-BASE
BASE COURSE
VAPOR BARRIER
SOLID TO SLOTTED 3" SCH 40 PVC PIPE
TRANSITION (SLIP COUPLING OR
THREADED JOINT)
VAPOR BARRIER SEALED TO
PIPE PER MANUFACTURER
INSTRUCTIONS
PIPE SLEEVE
VAPOR BARRIER SEALED TO OUTSIDE
OF CONCRETE AND WATERPROOFING
MEMBRANE (IF PRESENT) PER
MANUFACTURER INSTRUCTIONS - SEE
DETAIL 9/VM-2
3" SCH 40 PVC
90-DEGREE ELBOW
VIMS AT VERTICAL RISER (OPTIONAL SUB-SLAB COLLECTION PIPE)
NTS
9A
VM-2
EXTERNAL WALL (NOT PRESENT
AT ALL LOCATIONS)
STUD WALL
VAPOR LINER SEALED TO PIPE
AND CONCRETE PER
MANUFACTURER INSTRUCTIONS.
4" DIA METAL RISER DUCT PIPE
(SEE SPECIFICATION #4, #5 & #6)
4" SCH 40 PVC RISER DUCT PIPE
BASE COURSE
SOIL GAS
COLLECTOR MAT
SUBBASE
SOIL GAS COLLECTOR MAT CONNECTION SEALED TO 4" SCH 40
PVC RISER WITH POLYURETHANE SEALANT
SOIL GAS COLLECTOR MAT CONNECTION BLOCK TO PVC (TWO 0.5"
DIAMETER HOLE DRILLED IN BOTTOM FOR MOISTURE DRAINAGE)
4" DIA PVC TO METAL
TRANSITION COUPLING
TERMINATE VAPOR
BARRIER AT SOIL GRADE,
WHERE APPLICABLE
VIMS AT COLUMNS - EXPANSION DETAIL (TYP)
NTS
7
VM-2
CIP CONCRETE COLUMN
CONCRETE FLOOR SLAB
VAPOR BARRIER SEALED TO CONCRETE
PER MANUFACTURERS INSTRUCTIONS
COLUMN EXPANSION FORM
(INSTALLED OVER VAPOR BARRIER)
VAPOR LINER
VIMS AT VERTICAL RISERS WITH TEE (TYP)
NTS
9
VM-2
BASE COURSE
SUB-BASE
VAPOR BARRIER SEALED TO PIPE
PER MANUFACTURER INSTRUCTIONSSOLID TO SLOTTED 3" SCH 40
PVC PIPE TRANSITION (SLIP
COUPLING OR THREADED JOINT)
4" SCH 40 PVC RISER DUCT PIPE
(SEE SPECIFICATION #4, #5, AND #6)WALL (VARIES)
4" TO 3" SCH 40
PVC REDUCER
SOLID 3" SCH 40 PVC
3" SCH 40 PVC TEEVAPOR BARRIER
H&H NO. MLR-001
VAPOR MITIGATION PLAN
PREPARED BY:
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
VAPOR INTRUSION
MITIGATION SYSTEM
CROSS-SECTION
DETAILS #1-13MODERA LOSO3405 S. TRYON STREETCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 25050-21-060DEVELOPER:
ODELL ASSOCIATES, INC.
400 S. TRYON STREET
SUITE 1300
CHARLOTTE, NORTH
CAROLINA
VM-2
PROFESSIONAL
APPROVAL
DATE: 10-24-22
10/24/22
REVISIONS
REV DATE DESCRIPTION
0 05/02/22 DEQ SUBMISSION
1 07/29/22 REVISION 1 SUBMISSION
2 10/24/22 REVISION 2 SUBMISSION
S:\AAA-Master Projects\Mill Creek - MLR\MLR-001 - Assistance League\VIMP\Figures\VIMS Design_R2.dwg
VIMS AT EXTERIOR FOOTING WITH CURB (TYP)
NTSVM-2A
17
CONCRETE FLOOR SLAB
VAPOR BARRIER SEALED TO CONCRETE
PER MANUFACTURERS INSTRUCTIONS
VAPOR BARRIER
BASE COURSE
SUB-BASE
CONCRETE WALL
EXTERIOR GRADE
(VARIES)
TERMINATE VAPOR
BARRIER AT SOIL GRADE,
WHERE APPLICABLE
OPEN-AIR
SPACE
ENCLOSED
INTERIOR
WALL (VARIES)
BASE COURSESUB-BASE
VAPOR BARRIER
OPEN-AIR
SPACE
TERMINATE VAPOR BARRIER
AT SOIL GRADE, WHERE
APPLICABLE
VAPOR BARRIER AT SLAB EDGE ADJACENT TO OPEN-AIR SPACE18
NTSVM-2A
ENCLOSED
INTERIOR
VAPOR RETARDER, IF
WARRANTED, BY OTHERS
VIMS RISER WITH SECOND LEVEL OFF-SET (IF APPLICABLE)
NTS
TO EXHAUST
(SEE DETAIL 21)
MIN 1% SLOPE TOWARD
EXTRACTION POINT
CEILING TRUSSES
FLOOR
PIPE SUPPORTS PER NC
BUILDING CODE
SOLID 4" SCH 40 PVC.
LENGTH VARIES, SLOPED
1/8" PER FOOT
4" SCH 40 PVC
90-DEGREE ELBOW4" SCH 40 PVC
90-DEGREE ELBOW
19
VM-2A
NEAREST 6" WALL
CEILING
FINISHED FLOOR SLAB
2" SCH 40 PVC SET WITHIN GRAVEL LAYER
2" DRAIN EXPANSION TEST PLUG
VIMS MONITORING POINT - TYPICAL DETAIL VIEW
NTS
20
VM-2A
VAPOR BARRIER PENETRATION SEALED TO
PIPE PER MANUFACTURER INSTRUCTIONS
2" SCH 40 PVC 90 DEGREE ELBOW
FLOOR CLEANOUT, ADJUSTABLE, 4" DIA ZURN
INDUSTRIES MODEL #CO2450-PV4 (OR ENGINEER
APPROVED EQUIVALENT) FLUSH WITH FINISHED FLOOR
BASE COURSE
4" x 2" FLUSH REDUCER
BUSHING
PVC VENTED ENDCAP
(SEE SPECIFICATION #7)
BASE COURSE
FLOOR CLEANOUT, ADJUSTABLE,
4" DIA ZURN INDUSTRIES
MODEL #CO2450-PV4 (OR ENGINEER
APPROVED EQUIVALENT)
SEE DETAIL 25/VM-2A
FLUSH WITH
FINISHED FLOOR
21
NTSVM-2A
VIMS MONITORING POINT WITH EXTENDED INTAKE PIPE
VAPOR BARRIER
2" SOLID SCH 40 PVC
LENGTH VARIES - REFER
TO SHEET VM-1
2" SCH 40 PVC 90-DEGREE
ELBOW VAPOR BARRIER PENETRATION
SEALED TO PIPE PER
MANUFACTURER INSTRUCTIONS
WALL (VARIES)
PVC TERMINATION
SCREEN (SEE
SPECIFICATION #7)
VIMS MONITORING POINT AT WALL CONNECTION (IF WARRANTED)
NTS
22
VM-2A
BASE COURSE
VAPOR BARRIER SEALED TO PIPE PER
MANUFACTURER INSTRUCTIONS
WALL (VARIES)
POSITION TOP OF 2" PIPE MINIMUM 10"
FROM TOP OF ACCESS PANEL DOOR
2" SCH 40 PVC 90
DEGREE ELBOW
VAPOR BARRIER
12" X 12" WALL
ACCESS PANEL
2" DRAIN EXPANSION TEST PLUG
POSITION AT CENTER OF WALL OR
ALLOW FOR AT LEAST 1/2" DISTANCE
AROUND ALL SIDES OF PIPE
2" SOLID SCH 40 PVC PIPE
PVC PRIMER AND GLUE ALL
JOINTS ABOVE GRADE
PVC TERMNINATION
SCREEN(SEE
SPECIFICATION #7)
VIMS TURBINE VENTILATOR FAN & EXHAUST (TYPICAL)23
NTS
TURBINE VENTILATOR FAN
(EMPIRE MODEL TV04SS OR ENGINEER
APPROVED EQUIVALENT)
ELECTRICAL JUNCTION BOX FOR POTENTIAL FUTURE
VACUUM FAN (REFER TO SPECIFICATION #4)
RISER DUCT PIPE THROUGH ROOF
FLASHING
ROOFTOP
VM-2A
4" HEAVY DUTY
NO-HUB COUPLING
WALL (VARIES)
BASE COURSESUB-BASE
WALL (VARIES)
VAPOR BARRIER AT SLAB EDGE16
NTSVM-2A
TERMINATE VAPOR BARRIER AT SOIL
GRADE, WHERE APPLICABLEVAPOR BARRIER
OPEN AIR SPACE
ENCLOSED
INTERIOR SPACE
VIMS AT RETAINING WALL ADJACENT TO OCCUPIED SPACE (TYP)
NTS
15
VM-2A
SUB-BASE
BASE COURSE
VAPOR BARRIER
VAPOR BARRIER SEALED TO OUTSIDE OF
CONCRETE AND WATERPROOFING MEMBRANE
(IF PRESENT) PER MANUFACTURER
INSTRUCTIONS - SEE DETAIL 9/VM-2
WATERPROOFING AND RIGID
INSULATION (IF PRESENT -
REFER TO ARCH. PLANS)
DRAIN, IF
PRESENT
WALL (VARIES)
VAPOR RETARDER, IF
WARRANTED, BY OTHERS
INTERIOR SPACE
OPEN AIR SPACE
VIMS AT RETAINING WALL ADJACENT TO OPEN AIR SPACE (TYP)
NTS
14
VM-2A
SUB-BASE
CONCRETE
FLOOR SLAB
BASE COURSE
VAPOR BARRIER
WATERPROOFING AND
RIGID INSULATION, IF
PRESENT
DRAIN, IF
PRESENT
WALL (VARIES)
VIMS PIPING THROUGH SLAB STEP (OPTIONAL SUB-SLAB COLLECTION PIPE)
NTS
13A
VM-2A
SUB-BASE
VAPOR LINER
BASE COURSE
3" SCH 40 PVC
90-DEGREE ELBOW
VAPOR LINER SEALED TO PIPE PER
MANUFACTURER INSTRUCTIONS
PIPE SLEEVE
(SEE SPECIFICATION #12)
WALL (VARIES)
SOIL GAS
COLLECTOR MAT
MANUFACTURER SPECIFIED
FITTING TO 3" SCH 40 PVC
MANUFACTURER SPECIFIED
FITTING TO 3" SCH 40 PVC
VIMS AT UTILITY BANK (TYP)24
NTSVM-2A
INSTALL VAPOR BARRIER AS
CLOSELY AS POSSIBLE TO EACH
PENETRATION PRIOR TO
APPLICATION OF SEALANT
SEALANT SET AROUND UTILITY BANKS
WITHIN DAM (e.g. RAVEN POUR 'N
SEAL OR MASTIC WITH 2" MIN
OVERLAP WITH VAPOR BARRIER (SEE
SPECIFICATION #10)
SUB-BASE
BASE COURSE
VAPOR BARRIER CONCRETE SLAB
25
NTS
VAPOR BARRIER PENETRATION SEALED TO
PIPE PER MANUFACTURER INSTRUCTIONS
1" SCH 40 PVC 90 DEGREE ELBOW
OPEN ENDED PIPE
BASE COURSE
TEMPORARY MONITORING POINT (TYPICAL)
1" SOLID SCH 40 PVC
TEST PLUG (1" PIPE SIZE)
SET PIPE FLUSH WITH SLAB OR
EXTENDED MORE THAN 6" ABOVE
SLAB. (SEE SPECIFICATION #7)
VM-2A
H&H NO. MLR-001
VAPOR MITIGATION PLAN
PREPARED BY:
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
VAPOR INTRUSION
MITIGATION SYSTEM
CROSS-SECTION
DETAILS #13A - 24MODERA LOSO3405 S. TRYON STREETCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 25050-21-060DEVELOPER:
ODELL ASSOCIATES, INC.
400 S. TRYON STREET
SUITE 1300
CHARLOTTE, NORTH
CAROLINA
VM-2A
PROFESSIONAL
APPROVAL
NOTES:
VIMS = VAPOR INTRUSION MITIGATION SYSTEM
TYP = TYPICAL
SCH = SCHEDULE
PVC = POLYVINYL CHLORIDE
NTS = NOT TO SCALE
MIL = THOUSANDS OF AN INCH
SOG = SLAB-ON-GRADE
ALL PIPE MEASUREMENTS ARE BY DIAMETER
DATE: 10-24-22
10/24/22
REVISIONS
REV DATE DESCRIPTION
0 05/02/22 DEQ SUBMISSION
1 07/29/22 REVISION 1 SUBMISSION
2 10/24/22 REVISION 2 SUBMISSION
S:\AAA-Master Projects\Mill Creek - MLR\MLR-001 - Assistance League\VIMP\Figures\VIMS Design_R2.dwg
H&H NO. MLR-001
VAPOR MITIGATION PLAN
PREPARED BY:
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
MODERA LOSO3405 S. TRYON STREETCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 25050-21-060DEVELOPER:
ODELL ASSOCIATES, INC.
400 S. TRYON STREET
SUITE 1300
CHARLOTTE, NORTH
CAROLINA
VM-3
PROFESSIONAL
APPROVAL
NOTES:
VIMS = VAPOR INTRUSION MITIGATION SYSTEM
TYP = TYPICAL
SCH = SCHEDULE
PVC = POLYVINYL CHLORIDE
NTS = NOT TO SCALE
MIL = THOUSANDS OF AN INCH
SOG = SLAB-ON-GRADE
ALL PIPE MEASUREMENTS ARE BY DIAMETER
VAPOR INTRUSION
MITIGATION SYSTEM
SPECIFICATIONS
VAPOR INTRUSION MITIGATION SYSTEM (VIMS) SPECIFICATIONS
1.THIS VAPOR MITIGATION PLAN IS INTENDED TO BE USED FOR DIRECTION OF VIMS COMPONENT INSTALLATION ONLY AND IS NOT INTENDED TO GUIDE CONSTRUCTION OF BUILDING STRUCTURAL COMPONENTS. CONSTRUCTION CONTRACTOR SHALL VERIFY
CONSISTENCY OF VIMS DETAILS WITH APPLICABLE STRUCTURAL, ARCHITECTURAL, MECHANICAL, & PLUMBING PLANS AND RESOLVE ANY INCONSISTENCIES PRIOR TO VIMS INSTALLATION.
2.VIMS VAPOR BARRIER (LINER) SHALL BE VAPORBLOCK PLUS 20 (VBP20) 20-MIL VAPOR LINER MANUFACTURED BY RAVEN INDUSTRIES (RAVEN). AS AN ALTERNATIVE, DRAGO WRAP 20-MIL VAPOR INTRUSION BARRIER MANUFACTURED BY STEGO INDUSTRIES, LLC
(STEGO) CAN BE USED, PENDING APPROVAL BY THE ENGINEER.
THE VAPOR LINER SHALL BE INSTALLED AS SPECIFIED HEREIN AND PER MANUFACTURER INSTALLATION INSTRUCTIONS TO CREATE A CONTINUOUS LINER BELOW MITIGATED AREAS, AND ALONG RETAINING WALLS AND SLAB-ON-GRADE FOLDS WITHIN THE
EXTENT OF VAPOR LINER BOUNDARY. A MINIMUM 5-INCH THICK BASE COURSE CONSISTING OF CLEAN #57 STONE (WASHED WITH NO FINES) SHALL BE INSTALLED BENEATH THE VIMS VAPOR LINER. A SIMILAR HIGH PERMEABILITY STONE MAY BE USED,
PENDING APPROVAL BY THE ENGINEER.
2.1.THE VAPOR LINER SHALL BE PROPERLY SEALED IN ACCORDANCE WITH THE MANUFACTURER INSTALLATION INSTRUCTIONS AS SPECIFIED IN THESE DRAWINGS TO FOOTERS, SLAB STEPS, RETAINING WALLS, PENETRATIONS (SUCH AS PIPE PENETRATIONS), OR
OTHER BUILDING COMPONENTS WITHIN THE VIMS EXTENTS. VAPOR LINER SHALL BE INSTALLED UNDER CMU WALLS WHICH SUPPORT OCCUPIED ENCLOSED SPACES.
2.2.VAPOR BARRIER SHALL BE INSTALLED UNDER SLABS, ON WALLS, AND ALONG OTHER STRUCTURAL COMPONENTS WHICH COME IN CONTACT WITH BOTH AN OCCUPIABLE ENCLOSED SPACE AND SOIL. NOT ALL AREAS FOR THE VAPOR BARRIER MAY BE
DEPICTED ON THE DRAWINGS. THE GENERAL CONTRACTOR SHALL VERIFY ALL REQUIRED LOCATIONS FOR VAPOR BARRIER LONG VERTICAL WALLS PRIOR TO CONSTRUCTION.
2.3.ALL CONCRETE BOXOUTS, INCLUDING BUT NOT LIMITED TO SHOWER/BATH TUB DRAINS, SHALL HAVE A CONTINUOUS VAPOR BARRIER INSTALLED BELOW.
2.4.VAPOR BARRIER SHALL EXTEND ALONG FOOTING EXTERIOR, IF POSSIBLE, AT LOCATIONS WHERE EXTERIOR GRADE IS HIGHER THAN INTERIOR GRADE.
2.5.IN AREAS WITH EXPANSION BOARDS (E.G. ALONG COLUMNS), THE VAPOR BARRIER MUST BE SEALED DIRECTLY TO THE CONCRETE BETWEEN THE CONCRETE AND THE FORM BOARD. THE EXPANSION BOARD MAY BE INSTALLED OVER THE VAPOR BARRIER.
2.6.THE INTERFACE OF THE STEEL COLUMNS (IF PRESENT) AND THE CONCRETE SLAB SHALL BE SEALED WITH A SELF-LEVELING POLYURETHANE SEALANT PER DIRECTION OF THE ENGINEER OR ENGINEER'S DESIGNEE. SIMILAR SEALANT PRODUCTS MAY BE
APPROVED BY THE ENGINEER.
3.SUB-SLAB SLOTTED VAPOR COLLECTION PIPE SHALL BE SOCKET-WELD 3" SCH 40 PVC PIPE WITH 0.020" TO 0.060" SLOT WIDTH AND 1/8" SLOT SPACING. AN ALTERNATE SLOT PATTERN, OR SCH 40 PVC PERFORATED PIPE WITH 5/8" OR SMALLER DIAMETER
PERFORATIONS, OR SOIL GAS COLLECTOR MAT (1" X 12"), WITH SIMILAR AIR FLOW CHARACTERISTICS TO THE SLOTTED PIPE MAY BE USED PENDING APPROVAL BY THE DESIGN ENGINEER. IF CIRCULAR PIPE IS USED, A PVC TERMINATION SCREEN (WALRICH
CORPORATION #2202052, OR SIMILAR) SHOULD BE INSTALLED ON THE END OF PIPE.
3.1.SLOTTED COLLECTION PIPING SHALL BE SET WITHIN THE MINIMUM 5” BASE COURSE LAYER, WITH APPROXIMATELY 1” OF BASE COURSE MATERIAL BELOW THE PIPING.
3.2.SOIL GAS COLLECTOR MAT (IF INSTALLED) SHALL NOT BE USED THROUGH A CONCRETE FOOTING. SCH 40 PVC PIPE (3" DIA) SHALL BE USED FOR ALL SUB-SLAB VENT PIPE CROSSINGS THROUGH FOOTINGS. IF SOIL GAS COLLECTOR MAT IS USED,
MANUFACTURER APPROVED FITTINGS SHALL BE UTILIZED TO CONNECT THE SOIL GAS COLLECTOR MAT PVC PIPING FOR CROSSINGS THROUGH FOOTINGS.
4.4" SCH 40 PVC RISER DUCT PIPING SHALL BE INSTALLED TO CONNECT EACH SLAB PENETRATION LOCATION TO A ROOFTOP EXHAUST DISCHARGE POINT WITH STATIONARY VENTILATOR (SEE SPECIFICATION #5). ABOVE-SLAB RISER DUCT PIPE THAT RUNS BETWEEN
THE SLAB PENETRATION AND THE ROOFTOP EXHAUST DISCHARGE SHALL BE INSTALLED PER APPLICABLE BUILDING CODE AND AS SPECIFIED IN THE CONSTRUCTION DOCUMENTS AND DRAWINGS.
4.1.VERTICAL RISER PIPING SHALL BE CONNECTED WITH PVC PRIMER AND GLUE.
4.2.VERTICAL RISER PIPING MUST BE INSTALLED PER 2018 NORTH CAROLINA STATE PLUMBING CODE.
4.3.VIMS BELOW AND ABOVE GRADE SOLID PIPING SHALL NOT BE TRAPPED AND SHALL BE SLOPED A MINIMUM OF 1/8 UNIT VERTICAL BY 12 UNITS HORIZONTAL (1% SLOPE) TO GRAVITY DRAIN. BENDS, TURNS, AND ELBOWS IN VERTICAL RISER PIPES SHALL BE
MINIMIZED FROM THE SLAB TO THE ROOFTOP.
5.4" SCH 40 PVC RISER DUCT PIPING SHALL EXTEND IN A VERTICAL ORIENTATION THROUGH THE BUILDING ROOF AND TERMINATE A MINIMUM OF 2 FT ABOVE THE BUILDING ROOF LINE. EMPIRE MODEL TV04SS VENTILATOR (OR ALTERNATE APPROVED BY DESIGN
ENGINEER) SHALL BE INSTALLED ON THE EXHAUST DISCHARGE END OF EACH RISER DUCT PIPE. THE 4" RISER DUCT PIPE AND THE VENTILATOR SHALL BE SECURED TO THE PVC RISER IN A VERTICAL ORIENTATION.
5.1.EXHAUST DISCHARGE LOCATIONS SHALL BE A MINIMUM OF 10 FT FROM ANY OPERABLE OPENING OR AIR INTAKE INTO THE BUILDING. NOTE THAT DISCHARGE LOCATIONS ON THE ROOFTOP DEPICTED IN THE VAPOR MITIGATION PLAN MAY BE
REPOSITIONED AS LONG AS THE NEW POSITION MEETS THE REQUIREMENTS PRESENTED ABOVE, PENDING ENGINEER APPROVAL.
5.2.AN ELECTRICAL JUNCTION BOX (120VAC REQUIRED) FOR OUTDOOR USE SHALL BE INSTALLED NEAR THE FAN LOCATION ON THE ROOFTOP FOR POTENTIAL FUTURE CONVERSION TO ELECTRIC FANS, IF REQUIRED. ALL WIRING AND ELECTRICAL SHALL BE
INSTALLED PER APPLICABLE BUILDING AND ELECTRICAL CODES.
6.ABOVE-SLAB ACCESSIBLE RISER DUCT PIPING SHALL BE PERMANENTLY IDENTIFIED BY MEANS OF A TAG OR STENCIL AT A MINIMUM OF ONCE EVERY 10-LINEAR FT WITH "VAPOR MITIGATION: CONTACT MAINTENANCE". LABELS SHALL ALSO BE FIXED NEAR THE
VENTILATORS IN AN ACCESSIBLE LOCATION ON THE ROOFTOP.
7.MONITORING POINTS SHALL CONSIST OF 2-INCH DIAMETER SCH 40 PVC PIPE WITH A 90-DEGREE ELBOW TO FORM AN “L” SHAPE. A MINIMUM OF 6” SECTION OF PIPE AND MAXIMUM 6 FT SECTION OF PIPE, OR OTHERWISE APPROVED BY THE DESIGN ENGINEER,
SHALL BE SET WITHIN THE BASE COURSE LAYER WITH AN OPEN ENDED PIPE OR PIPE PROTECTION SCREEN AT THE TERMINATION. THE PIPE TERMINATION SHALL BE ENCASED WITHIN THE BASE COURSE LAYER.
7.1.THE HORIZONTAL PIPING SHALL BE SLOPED A MINIMUM OF 1/8 UNIT VERTICAL BY 12 UNITS HORIZONTAL (1% SLOPE) TO GRAVITY DRAIN TOWARDS THE PIPE TERMINATION AND PREVENT MOISTURE FROM COLLECTING AT THE 90-DEGREE ELBOW.
7.2.THE MONITORING POINT INTAKE SHALL BE PLACED A MINIMUM OF 5-FT FROM EXTERIOR FOOTERS.
7.3.MONITORING POINTS LOCATED IN STAIRWELLS ARE INTENDED TO BE INSTALLED BELOW STAIRWELL LANDINGS AND MAY BE RE-POSITIONED WITHIN THE STAIRWELL PER APPROVAL OF THE DESIGN ENGINEER TO PROVIDE SUITABLE ACCESS TO THE POINT.
7.4.THE END OF THE PIPE SHALL CONTAIN A PVC TERMINATION SCREEN, OR HAVE A MINIMUM OF THREE 58" DIA HOLES DRILLED INTO A SOLID CAP, OR SHALL HAVE VENT SLOTS WITH MINIMUM 1 SQUARE INCH OF OPEN AREA.
7.5.A 4-INCH DIAMETER ADJUSTABLE FLOOR CLEAN-OUT (ZURN INDUSTRIES MODEL #CO2450-PV4, OR EQUIVALENT) SHALL BE INSTALLED AND SET FLUSH WITH THE FINISHED CONCRETE SURFACE, OR THE MONITORING POINT SHALL BE PLACED BEHIND A WALL
ACCESS PANEL PER THE DETAILS.
7.6.TEMPORARY MONITORING POINTS MAY BE ABANDONED USING AIR-TIGHT SEALANT AND CONCRETE AFTER TESTING PER PERMISSION OF THE DESIGN ENGINEER AND DEQ.
8.CONSTRUCTION CONTRACTORS AND SUB-CONTRACTORS SHALL USE "LOW OR NO VOC" PRODUCTS AND MATERIALS, WHERE POSSIBLE, AND SHALL NOT USE PRODUCTS CONTAINING THE COMPOUNDS TETRACHLOROETHENE (PCE) OR TRICHLOROETHENE (TCE).
IN ADDITION, DAUGHTER PRODUCTS OF PCE AND TCE INCLUDING 1,2-DICHLOROETHENE (-cis AND -trans) AND VINYL CHLORIDE (NOTE, POLYVINYL CHLORIDE [PVC] IS ACCEPTABLE) SHOULD ALSO NOT BE USED, WHERE POSSIBLE. THE CONSTRUCTION
CONTRACTOR AND SUB-CONTRACTORS SHALL PROVIDE SAFETY DATA SHEETS (SDS) TO THE ENGINEER FOR THE PRODUCTS AND MATERIALS USED FOR CONSTRUCTION OF THE VIMS.
9.IN INSTANCES WHERE A THICKENED FOOTING OR RETAINING WALL IS NOT SPECIFIED AT THE EXTENT OF VAPOR LINER, A THICKENED SLAB OR FOOTER SHALL BE INSTALLED BY THE CONTRACTOR THAT INCLUDES A SOIL SUBBASE TO CREATE A CUT-OFF FOOTER AT
THE EXTENT OF VAPOR LINER. THE ADDITIONAL THICKENED SLAB OR FOOTER SHALL NOT ALLOW FOR CONTINUOUS GRAVEL BETWEEN THE VIMS EXTENTS AND EXTERIOR NON-MITIGATED AREAS.
10.CONSTRUCTION CONTRACTORS AND SUB-CONTRACTORS SHALL AVOID THE USE OF TEMPORARY FORM BOARDS THAT PENETRATE THE VAPOR LINER WHERE POSSIBLE. IF TEMPORARY FORM BOARDS ARE USED, THE SIZE AND NUMBER OF PENETRATIONS
THROUGH THE VAPOR LINER SHALL BE LIMITED AND SMALL DIAMETER SOLID STAKES (I.E. METAL STAKES) SHALL BE USED. IN ALL CASES, AS FORM BOARDS ARE REMOVED, THE CONTRACTOR OR SUB-CONTRACTORS SHALL RESEAL ALL PENETRATIONS IN
ACCORDANCE WITH VAPOR LINER MANUFACTURER INSTALLATION INSTRUCTIONS.
10.1.HOLLOW FORMS OR CONDUITS THAT CONNECT THE SUB-SLAB ANNULAR SPACE TO ENCLOSED ABOVE SLAB SPACES SHALL NOT BE PERMITTED.
10.2.AREAS OF UTILITY BANKS (e.g. LOCATION OF THREE OR MORE ADJACENT UTILITIES THROUGH THE SLAB) SHALL BE SEALED TO CREATE AN AIR-TIGHT BARRIER AROUND THE UTILITY CONDUITS USING RAVEN POUR N'SEAL OR MASTIC PRIOR TO THE SLAB
POUR. OTHER SEALANT METHODS IF USED SHALL BE APPROVED BY THE DESIGN ENGINEER PRIOR TO APPLICATION.
11.INSPECTIONS: THE INSTALLATION CONTRACTOR(S) SHALL NOT COVER ANY PORTIONS OF THE VIMS WITHOUT INSPECTION. INSPECTIONS OF EACH COMPONENT OF THE VIMS SHALL BE CONDUCTED BY THE ENGINEER, OR ENGINEER'S DESIGNEE, TO CONFIRM
VIMS COMPONENTS ARE INSTALLED PER THE APPROVED DESIGN. THE REQUIRED INSPECTION COMPONENTS INCLUDE: (1) INSPECTION OF SUB-SLAB PIPING LAYOUT, (2) GRAVEL PLACEMENT, AND (3) MONITORING POINT PLACEMENT PRIOR TO INSTALLING
VAPOR BARRIER; (4) INSPECTION OF VAPOR BARRIER PRIOR TO POURING CONCRETE; (5) INSPECTION OF ABOVE-GRADE PIPING LAYOUT; AND (6) INSPECTION OF VENTILATOR AND RISER DUCT PIPE CONNECTIONS. INSPECTIONS WILL BE COMBINED WHEN
POSSIBLE DEPENDING ON THE CONSTRUCTION SEQUENCE/SCHEDULE. THE CONSTRUCTION CONTRACTOR(S) SHALL COORDINATE WITH THE ENGINEER TO PERFORM THE REQUIRED INSPECTIONS. A MINIMUM 48-HOUR NOTICE SHALL BE GIVEN TO THE
ENGINEER AND DEQ PRIOR TO THE REQUIRED INSPECTION(S).
12.PIPE SLEEVES, IF USED, SHALL BE PROPERLY SEALED TO PREVENT A PREFERENTIAL AIR PATHWAY FROM BELOW THE SLAB INTO THE BUILDING. REFER TO TO STRUCTURAL DRAWINGS FOR FOOTING DETAILS ADDRESSING VIMS PIPING.
13.WATERPROOFING INCLUDING MEMBRANES AND DRAINAGE MATS SHALL BE INSTALLED IN ACCORDANCE WITH THE ARCHITECTURAL AND STRUCTURAL PLANS. IF WATERPROOFING IS PRESENT, THE VAPOR BARRIER SHALL BE INSTALLED BETWEEN
WATERPROOFING AND ANY DRAINAGE FEATURES INCLUDING DRAINAGE MATS WHERE IT OVERLAPS. THE GENERAL CONTRACTOR SHALL CONFIRM WITH THAT THE WATERPROOFING PRODUCTS AND SEALANTS USED DURING CONSTRUCTION ARE COMPATIBLE
WITH THE SPECIFIED VAPOR BARRIER ACCORDING TO MANUFACTURER SPECIFICATIONS.
DATE: 10-24-22
10/24/22
REVISIONS
REV DATE DESCRIPTION
0 05/02/22 DEQ SUBMISSION
1 07/29/22 REVISION 1 SUBMISSION
2 10/24/22 REVISION 2 SUBMISSION
S:\AAA-Master Projects\Mill Creek - MLR\MLR-001 - Assistance League\VIMP\Figures\VIMS Design_R2.dwg

Attachment C-1

VaporBlock 20 (VBP-20) Product Specification Sheets & Installation Instructions
PRODUCT PART #
VaporBlock® Plus™ 20 ................................................................ VBP20
UNDER-SLAB VAPOR / GAS BARRIER
Under-Slab Vapor/Gas Retarder
© 2018 RAVEN INDUSTRIES INC. All rights reserved.
VAPORBLOCK® PLUS™VBP20
PRODUCT DESCRIPTION
VaporBlock® Plus™ is a seven-layer co-extruded barrier
made using high quality virgin-grade polyethylene and
EVOH resins to provide unmatched impact strength as well
as superior resistance to gas and moisture transmission.
VaporBlock® Plus™ 20 is more than 100 times less permeable
than typical high-performance polyethylene vapor retarders
against Methane, Radon, and other harmful VOCs. Tested and
verified for unsurpassed protection against BTEX, HS, TCE, PCE,
methane, radon, other toxic chemicals and odors.
VaporBlock® Plus™ 20 multi-layer gas barrier is manufactured
with the latest EVOH barrier technology to mitigate hazardous
vapor intrusion from damaging indoor air quality, and the safety
and health of building occupants. VBP20 is one of the most
effective underslab gas barriers in the building industry today
far exceeding ASTM E-1745 (Plastic Water Vapor Retarders
Used in Contact with Soil or Granular Fill Under Concrete Slabs)
Class A, B and C requirements. Available in a 20 (Class A) mil
thicknesses designed to meet the most stringent requirements.
VaporBlock® Plus™ 20 is produced within the strict guidelines
of our ISO 9001 Certified Management System.
PRODUCT USE
VaporBlock® Plus™ 20 resists gas and moisture migration
into the building envelop when properly installed to provide
protection from toxic/harmful chemicals. It can be installed as
part of a passive or active control system extending across the
entire building including floors, walls and crawl spaces. When
installed as a passive system it is recommended to also include
a ventilated system with sump(s) that could be converted to an
active control system with properly designed ventilation fans.
VaporBlock® Plus™ 20 works to protect your flooring and
other moisture-sensitive furnishings in the building’s interior
from moisture and water vapor migration, greatly reducing
condensation, mold and degradation.
SIZE & PACKAGING
VaporBlock® Plus™ 20 is available in 10’ x 150’ rolls to
maximize coverage. All rolls are folded on heavy-duty cores
for ease in handling and installation. Other custom sizes
with factory welded seams are available based on minimum
volume requirements. Installation instructions and ASTM E-1745
classifications accompany each roll.
APPLICATIONS
Radon Barrier
Methane Barrier
VOC Barrier
Brownfields Barrier
Vapor Intrusion Barrier
Under-Slab Vapor Retarder
Foundation Wall Vapor Retarder
VaporBlock® Plus™ is a seven-layer co-extruded barrier made using high quality virgin-grade polyethylene and EVOH resins to provide unmatched impact strength as well as superior resistance to gas and moisture transmission.
VaporBlock® Plus™ Placement
All instructions on architectural or structural drawings should be reviewed and followed.
Detailed installation instructions accompany each roll of VaporBlock® Plus™ and can also be located at www.ravenefd.com.
ASTM E-1643 also provides general installation information for vapor retarders.
VAPORBLOCK® PLUS™ 20
PROPERTIES TEST METHOD IMPERIAL METRIC
AppeArAnce White/Gold
Thickness, nominAl 20 mil 0.51 mm
WeighT 102 lbs/MSF 498 g/m²
clAssificATion ASTM E 1745 CLASS A, B & C
³ Tensile sTrengTh
ASTM E 154Section 9(D-882)58 lbf 102 N
impAcT resisTAnce ASTM D 1709 2600 g
permeAnce (neW mATeriAl)
ASTM E 154Section 7ASTM E 96Procedure B
0.0098 Perms
grains/(ft²·hr·in·Hg)
0.0064 Perms
g/(24hr·m²·mm Hg)
permeAnce (AfTer condiTioning)
(sAme meAsuremenT As Above permeAnce)
ASTM E 154Section 8, E96Section 11, E96Section 12, E96Section 13, E96
0.00790.00790.00970.0113
0.00520.00520.00640.0074
WvTr ASTM E 96Procedure B 0.0040 grains/hr-ft²0.0028 gm/hr-m²
benzene permeAnce See Note ⁶1.13 x 10-¹⁰ m²/sec or 3.62 x 10-¹³ m/s
Toluene permeAnce See Note ⁶1.57 x 10-¹⁰ m²/sec or 1.46 x 10-¹³ m/s
eThylbenzene permeAnce See Note ⁶1.23 x 10-¹⁰ m²/sec or 3.34 x 10-¹⁴ m/s
m & p-Xylenes permeAnce See Note ⁶1.17 x 10-¹⁰ m²/sec or 3.81 x 10-¹⁴ m/s
o-Xylene permeAnce See Note ⁶1.10 x 10-¹⁰ m²/sec or 3.43 x 10-¹⁴ m/s
hydrogen sulfide See Note 9 1.92E-⁰⁹ m/s
TrichloroeThylene (Tce) See Note ⁶7.66 x 10-¹¹ m²/sec or 1.05 x 10-¹⁴ m/s
perchloroeThylene (pce)See Note ⁶7.22 x 10-¹¹ m²/sec or 1.04 x 10-¹⁴ m/s
rAdon diffusion coeffiecienT K124/02/95 < 1.1 x 10-13 m2/s
meThAne permeAnce ASTM D 1434 3.68E-¹² m/sGas Transmission Rate (GTR):0.32 mL/m²•day•atm
mAXimum sTATic use TemperATure 180° F 82° C
minimum sTATic use TemperATure - 70° F - 57° C
UNDER-SLAB VAPOR / GAS BARRIER
VAPORBLOCK® PLUS™VBP20
© 2018 RAVEN INDUSTRIES INC. All rights reserved.
Scan QR Code to download current technical data sheets via the Raven website.
Note: To the best of our knowledge, unless otherwise stated, these are typical property values and are intended as guides only, not as specification limits. Chemical resistance, odor transmission, longevity as well as other performance criteria is not implied or given and actual testing must be performed for applicability in specific applications and/or conditions. RAVEN INDUSTRIES MAKES NO WARRANTIES AS TO THE FITNESS FOR A SPECIFIC USE OR MERCHANTABILITY OF PRODUCTS REFERRED TO, no guarantee of satisfactory results from reliance upon contained information or recommendations and disclaims all liability for resulting loss or damage. Limited Warranty available at www.RavenEFD.com
061318 EFD 1125
RAVEN ENGINEERED FILMSP.O. Box 5107 Sioux Falls, SD 57117-5107Ph: [phone] • TF: [phone] [e-mail]
³ Tests are an average of machine and transverse directions.5 Raven Industries performs seam testing at 20” per minute.6 Aqueous Phase Film Permeance. Permeation of Volatile Organic Compounds through EVOH Thin Film Membranes and Coextruded LLDPE/EVOH/
LLDPE Geomembranes, McWatters and Rowe, Journal of Geotechnical and Geoenvironmental Engineering© ASCE/
September 2015. (Permeation is the Permeation Coefficient adjusted to actual film thickness - calculated at 1 kg/m³.)
The study used to determine PCE and TCE is titled: Evaluation of diffusion of PCE & TCE through high performance geomembranes by Di
Battista and Rowe, Queens University 8 Feb 2018.9 The study used to determine diffusion coefficients is titled: Hydrogen Sulfide (H₂S) Transport through Simulated Interim Covers with Conventional and Co-Extruded Ethylene-Vinyl Alcohol (EVOH) Geomembranes.
INSTALLATION GUIDELINES - With VaporSeal™ Tape
VaporSeal™
4” Tape
VaporSeal™ 4” Tape Optional Butyl Seal
2-Sided Tape
Gas Barrier Applications
Elements of a moisture/gas-resistant floor system. General illustration only.(Note: This example shows multiple options for waterstop placement.
VaporSeal™
4” Tape
VaporSeal™ 4” Tape Optional Butyl Seal
2-Sided Tape
Gas Barrier Applications
Fig. 2: VaporBlock® Plus™ Overlap Joint Sealing Methods
Fig. 1: VaporBlock® Plus™ Overlapping Roll-out Method
Please Note: Read these instructions thoroughly before installation to ensure proper use of VaporBlock® Plus™. ASTM E 1465, ASTM E 2121 and, ASTM E 1643 also provide valuable information regarding the installation of vapor / gas barriers. When installing this product, contractors shall conform to all applicable local, state and federal regulations and laws pertaining to residential and commercial building construction.
• When VaporBlock® Plus™ gas barrier is used as part of an active control system for radon or other gas, a ventilation system will be required.
• If designed as a passive system, it is recommended to install a ventilation system that could be converted to an active system if needed.
Materials List:VaporBlock® Plus™ Vapor / Gas BarrierVaporSeal™* 4” Seaming TapeVaporSeal™* 12” Seaming/Repair TapeButyl Seal 2-Sided TapeVaporBoot Plus Pipe Boots 12/Box (recommended)VaporBoot Tape (optional)POUR-N-SEAL™ (optional)1” Foam Weather Stripping (optional)Mako® Screed Supports (optional)
VAPORBLOCK® PLUS™ PLACEMENT
1.1. Level and tamp or roll granular base as specified. A base for a gas-reduction system may require a 4” to 6” gas permeable layer of clean coarse aggregate as specified by your architectural or structural drawings after installation of the recommended gas collection system. In this situation, a cushion layer consisting of a non-woven geotextile fabric placed directly under VaporBlock® Plus™ will help protect the barrier from damage due to possible sharp coarse aggregate.
1.2. Unroll VaporBlock® Plus™ running the longest dimension parallel with the direction of the pour and pull open all folds to full width. (Fig. 1)
1.3. Lap VaporBlock® Plus™ over the footings and seal with Raven Butyl Seal tape at the footing-wall connection. Prime concrete surfaces, when necessary, and assure they are dry and clean prior to applying Raven Butyl Seal Tape. Apply even and firm pressure with a rubber roller. Overlap joints a minimum of 6” and seal overlap with 4” VaporSeal™ Tape. When used as a gas barrier, overlap joints a minimum of 12” and seal in-between overlap with an optional 2-sided Raven Butyl Seal Tape. Then seal with 4” VaporSeal™ Tape centered on the overlap seam. (Fig. 2)
Page 1 of 4 T�������������������������������� by the Portland Cement Association.Reference: Kanare, Howard M., Concrete Floors and Moisture, EB119, Portland Cement Association, Skokie, Illinois, and National Ready Mixed Concrete Association, Silver Spring, Maryland, USA, 2008, 176 pages.
1.4. Seal around all plumbing, conduit, support columns or other penetrations that come through the VaporBlock® Plus™ membrane.
1.4a. Method 1: Pipes four inches or smaller can be sealed with Raven VaporBoot Plus preformed pipe boots. VaporBoot Plus preformed pipe boots are formed in steps for 1”, 2”, 3” and 4” PVC pipe or IPS size and are sold in units of 12 per box (Fig. 3 & 5).
Pipe boots may also be fabricated from excess VaporBlock® Plus™ membrane (Fig. 4 & 6) and sealed with VaporBoot Tape or VaporSeal™ Tape (sold separately).
1.4b. Method 2: To fabricate pipe boots from VaporBlock® Plus™ excess material (see Fig. 4 & 6 for A-F):
A) Cut a square large enough to overlap 12” in all directions.
B) Mark where to cut opening on the center of the square and cut four to eight slices about 3/8” less than the diameter of the pipe.
C) Force the square over the pipe leaving the tightly stretched cut area around the bottom of the pipe with approximately a 1/2” of the boot material running vertically up the pipe. (no more than a 1/2” of stretched boot material is recommended)
D) Once boot is positioned, seal the perimeter to the membrane by applying 2-sided Raven Butyl Seal Tape in between the two layers. Secure boot down firmly over the membrane taking care not to have any large folds or creases.
E) Use VaporBoot Tape or VaporSeal™ Tape to secure the boot to the
pipe.
VaporBoot Tape (option) – fold tape in half lengthwise, remove half of the release liner and wrap around the pipe allowing 1” extra for overlap sealing. Peel off the second half of the release liner and work the tape outward gradually forming a complete seal.
VaporSeal™ Tape (option) - Tape completely around pipe overlapping the VaporBlock® Plus™ square to create a tight seal against the pipe.
F) Complete the process by taping over the boot perimeter edge with VaporSeal™ Tape to create a monolithic membrane between the surface of the slab and gas/moisture sources below and at the slab perimeter. (Fig. 4 & 6)
Preformed Pipe Boot Square Material Pipe Boot
Fig. 3
SINGLE PENETRATION PIPE BOOT INSTALLATION
Fig. 5 Fig. 6
1. Cut a square of VaporBlock® Plus™ barrier to extend at least 12” from the pipe in all directions.
2. Cut four to eight slices about 3/8” less than the diameter of the pipe.
5. Use Raven VaporBoot or VaporSeal™ Tape and overlap 1” at the seam.
4. Tape over the boot perimeter edge with VaporSeal™ Tape.
1. Cut out one of the preformed boot steps (1” to 4”).
2. Tape the underside boot perimeter with 2-sided Butyl Seal Tape.
3. Force the boot over pipe and press tape firmly in place.
4. Use VaporSeal™ Tape
to secure boot to the pipe.
5. Tape around entire boot edge with VaporSeal™ Tape.
VaporBoot Flexible Tapeor VaporSeal™ 4” TapeVaporSeal™ 4” Tape
VaporBlock® Plus™Material
VaporSeal™ 4” Tape
Raven Butyl Seal2-Sided Tape Raven Butyl Seal2-Sided Tape
VaporBoot PlusPreformed Boot 12”(minimum)
3. Force over pipe and tape the underside boot perimeter to existing barrier with 2-sided Butyl Seal Tape.
Fig. 4
Page 2 of 4 ��������������������������������ortland Cement Association.Reference: Kanare, Howard M., Concrete Floors and Moisture, EB119, Portland Cement Association, Skokie, Illinois, and National Ready Mixed Concrete Association, Silver Spring, Maryland, USA, 2008, 176 pages.Method 1
Method 2
VaporSeal™4” Tape VaporBoot PlusPerformed Boot
Raven Butyl Seal 2-sided Tape Raven Butyl Seal 2-sided Tape
1.5. Sealing side-by-side multiple penetrations (option 1);
A) Cut a patch large enough to overlap 12” in all directions (Fig. 7)
of penetrations.
B) Mark where to cut openings and cut four to eight slices about
3/8” less than the diameter of the penetration for each.
C) Force patch material over penetration to achieve a tight fit and
form a lip.
D) Once patch is positioned, seal the perimeter to the membrane
by applying 2-sided Raven Butyl Seal Tape in-between the two
layers. (Fig. 8)
E) After applying Raven Butyl Seal Tape between the patch and
membrane, tape around each of the penetrations and the patch
with VaporSeal™ 4” tape. (Fig. 9) For additional protection apply
POUR-N-SEAL™ or an acceptable polyurethane elastomeric
sealant around the penetrations. (Fig. 10)
Fig. 7 Fig. 8
Fig. 9 Fig. 10
MULTIPLE PENETRATION PIPE BOOT INSTALLATION
Fig. 6
Cut a patch large enough to overlap 12” in all directions and slide over penetrations (Make openings as tight as possible.)
Once the overlay patch is positioned, seal the perimeter to the membrane by applying 2-sided Raven Butyl Seal Tape in-between the two layers.
After applying Raven Butyl Seal Tapebetween the patch and membrane, tape around the perimeter of the penetration and the patch with VaporSeal™ 4” Tape.
For additional protection apply POUR-N-SEAL™ or an acceptable polyurethane elastomeric sealant around the penetrations.
VaporSeal™ 4” Tape VaporSeal™ 4” Tape
Page 3 of 4
Option 1
Raven Butyl Seal 2-sided Tape
1.6. POUR-N-SEAL™ method of sealing side-by-side multiple penetrations (option 2);
A) Install the vapor barrier as closely as possible to pipe penetrations to minimize the amount of POUR-N-SEAL™ necessary to seal around all penetrations.
B) Once barrier is in place, remove soil or other particles with a dry cloth or a fine broom to allow for improved adhesion to the POUR-N-SEAL™ liquid.
C) Create a dam around the penetration area approximately 2” away from the pipe or other vertical penetrations by removing the release liner from the back of a 1” weather stripping foam and adhere to the vapor barrier. Form a complete circle to contain the POUR-N-SEAL™ materials (Fig. 11).
D) Once mixed, pour contents around the pipe penetrations. If needed, a brush or a flat wooden stick can be used to direct the sealant completely around penetrations creating a complete seal (Fig. 12-13).
E) DO NOT leave excess POUR-N-SEAL™ in plastic container for longer than the time it takes to pour sealant.
Fig. 12 Fig. 13
Fig. 11
Option 2
VAPORBLOCK® PLUS™ REPAIR INSTRUCTIONS
1.7. Proper installation requires all holes and openings are repaired prior
to placing concrete. When patching small holes, simply cut a 12” long
piece of 12” wide VaporSeal™ tape. Remove release liner and center
over the opening. Apply pressure to create a seal (Fig. 14-15).
1.8. When installing VaporBlock® Plus™ around pipe penetrations,
vertical columns, electrical ducts and other obstructions, you will
find it necessary to cut it to the nearest outside edge. This cut can
be easily sealed with 12” wide VaporSeal™ tape, by simply centering
it over the cut, 6” on either side. Once the tape is placed correctly,
apply pressure to assure a complete seal (Fig. 16).
Reminder Note: All holes or penetrations through the membrane will need
to be patched with 12” VaporSeal™ Tape.
Fig. 14
Page 4 of 5
Fig. 15
2.1. When installing reinforcing steel and utilities, in addition to the
placement of concrete, take precaution to protect VaporBlock®
Plus™. Carelessness during installation can damage the most
puncture–resistant membrane. Sheets of plywood cushioned with
geotextile fabric temporarily placed on VaporBlock® Plus™ provide
for additional protection in high traffic areas including concrete
buggies.
2.2. Use only brick-type or chair-type reinforcing bar supports to protect
VaporBlock® Plus™ from puncture.
2.3. Avoid driving stakes through VaporBlock® Plus™. If this cannot be
avoided, each individual hole must be repaired per section 1.7.
2.4. To avoid penetrating VaporBlock® Plus™ when installing screed
supports, utilize non-penetrating support, such as the Mako®
Screed Support System (Fig. 17). Avoid driving stakes through
VaporBlock® Plus™. If this cannot be avoided, each individual hole
must be repaired per figures 14-15.
2.5. If a cushion or blotter layer is required in the design between
VaporBlock® Plus™ and the slab, additional care should be given if
sharp crushed rock is used. Washed rock will provide less chance of
damage during placement. Care must be taken to protect blotter layer
from precipitation before concrete is placed.
VaporBlock® Plus™ Gas & Moisture Barrier can be identified on site
as gold/white in color printed in black ink with following logo and
classification listing (Fig. 18)
Page 5 of 5
VaporBlock® Plus™
Gas & Moisture Barrier
Note: To the best of our knowledge, unless otherwise stated, these are typical property values and are intended as guides only, not as specification limits. Chemical resistance, odor transmission, longevity as well as other performance criteria is not implied or given and actual testing must be performed for applicability in specific applications and/or conditions. RAVEN INDUSTRIES MAKES NO WARRANTIES AS TO THE FITNESS FOR A SPECIFIC USE OR MERCHANTABILITY OF PRODUCTS REFERRED TO, no guarantee of satisfactory results from reliance upon contained information or recommendations and disclaims all liability for resulting loss or damage. Limited Warranty available at wwww.RavenEFD.com
ENGINEERED FILMSP.O. Box 5107 Sioux Falls, SD 57117-5107Ph: [phone] • TF: [phone]
[e-mail]
020316 EFD 1127
VAPORBLOCK® PLUS™ PROTECTION
Fig. 16
Fig. 18
Fig. 17
* Patent Pending
© Raven 2016. All Rights Reserved.

Attachment C-2

Drago Wrap Vapor Intrusion Barrier Product Specification Sheets & Installation
Instructions

P1 OF 2
DRAGO® WRAPVAPOR INTRUSION BARRIER
A STEGO TECHNOLOGY, LLC INNOVATION | VAPOR RETARDERS 07 26 00, 03 30 00 | VERSION: 2/22/2019
1. PRODUCT NAME
DRAGO WRAP VAPOR INTRUSION BARRIER
2. MANUFACTURER
c/o Stego® Industries, LLC*
216 Avenida Fabricante, Suite 101
San Clemente, CA 92672
Sales, Technical Assistance
Ph: [phone]
Fx: [phone]
www.stegoindustries.com
3. PRODUCT DESCRIPTION
TABLE 4.1: PHYSICAL PROPERTIES OF DRAGO WRAP VAPOR INTRUSION BARRIER
PROPERTY TEST RESULTS
Under Slab Vapor Retarders ASTM E1745 – Standard Specification for Water Vapor Retarders Used in Contact with Soil or Granular Fill under Concrete Slabs ASTM E1745 Compliant
Water Vapor Permeance ASTM F1249 – Test Method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using a Modulated Infrared Sensor 0.0069 perms
Push-Through Puncture ASTM D4833 – Test Method for Index Puncture Resistance of Geotextiles, Geomembranes, and Related Products 183.9 Newtons
Tensile Strength ASTM D882 – Test Method for Tensile Properties of Thin Plastic Sheeting 53.5 lbf/in
Permeance After Conditioning ASTM E154 Section 8, F1249 – Permeance after wetting, drying, and soaking 0.0073 perms(ASTM E1745 ASTM E154 Section 11, F1249 – Permeance after heat conditioning 0.0070 permsSections 7.1.2 - 7.1.5) ASTM E154 Section 12, F1249 – Permeance after low temperature conditioning 0.0062 perms ASTM E154 Section 13, F1249 – Permeance after soil organism exposure 0.0081 perms
Hydrocarbon Attenuation Factors Contact Stego Industries’ Technical Department
Chlorinated Solvent Attenuation Factors Contact Stego Industries’ Technical Department
Methane Transmission Rate ASTM D1434 – Test Method for Determining Gas Permeability Characteristics of 7.0 GTR** Plastic Film and Sheeting (mL(STP)/m2*day)
Radon Diffusion Coefficient K124/02/95 9.8 x 10-14 m2/second
Thickness 20 mil
Roll Dimensions 14' x 105' or 1,470 ft2
Roll Weight 150 lb
Note: perm unit = grains/(ft2*hr*in-Hg) ** GTR = Gas Transmission Rate
USES: Drago Wrap is specifically engineered to attenuate volatile organic compounds (VOCs) and serve as a below-slab
moisture vapor barrier.
COMPOSITION: Drago Wrap is a multi-layered plastic extrusion that combines uniquely designed materials with only
high grade, prime, virgin resins.
ENVIRONMENTAL FACTORS: Drago Wrap can be used in systems for the control of various VOCs including hydrocarbons,
chlorinated solvents, radon, methane, soil poisons, and sulfates.
4. TECHNICAL DATA
Continued... Note – legal notice on page 2.
DRAGO® WRAPVAPOR INTRUSION BARRIER
A STEGO TECHNOLOGY, LLC INNOVATION | VAPOR RETARDERS 07 26 00, 03 30 00 | VERSION: 2/22/2019
DATA SHEETS ARE SUBJECT TO CHANGE. FOR MOST CURRENT VERSION, VISIT WWW.STEGOINDUSTRIES.COM
[phone] | www.stegoindustries.com
*Stego Industries, LLC (“Stego”) is the exclusive Representative for Drago Wrap and Pango Wrap. All designated trademarks are the intellectual property
of Stego or the entity for which it is acting as a Representative. Installation, Warranty, State Approval Information and Disclosure of Representative Status: www.stegoindustries.com/legal. ©2019 Stego Industries, LLC. All rights reserved.
5. INSTALLATION
UNDER SLAB: Unroll Drago Wrap over a tamped aggregate, sand, or earth base. Overlap all seams a minimum of 12
inches and tape using Drago® Tape. All penetrations must be sealed using a combination of Drago Wrap and Drago
Accessories.
Review Drago Wrap’s complete installation instructions prior to installation.
6. AVAILABILITY & COST
Drago Wrap is available nationally through our network of building supply distributors. For current cost information,
contact your local Drago distributor or Stego Industries’ Sales Representative.
7. WARRANTY
Stego Industries, LLC believes to the best of its knowledge, that specifications and recommendations herein are
accurate and reliable. However, since site conditions are not within its control, Stego Industries does not guarantee
results from the use of the information provided and disclaims all liability from any loss or damage. Stego Technology,
LLC does offer a limited warranty on Drago Wrap. Please see www.stegoindustries.com/legal.
8. MAINTENANCE
Store Drago Wrap in a dry and temperate area.
9. TECHNICAL SERVICES
Technical advice, custom CAD drawings, and additional information can be obtained by contacting Stego Industries or
by visiting the website.
Contact Number: [phone]
Website: www.stegoindustries.com
10. FILING SYSTEMS
• www.stegoindustries.com
P2 OF 2
INSTALLATIONINSTRUCTIONS
DRAGO® WRAP
VAPOR INTRUSION BARRIER
Engineered protection to create a healthy built environment.
2. Unroll Drago Wrap over the area where the slab is to be placed.
Drago Wrap should completely cover the concrete placement
area. All joints/seams should be overlapped a minimum of
12 inches and taped using Drago® Tape. (Fig. 1). If additional
protection is needed, install DragoTack™ Tape in between the
overlapped seam in combination with Drago Tape on top of the
seam.
NOTE: The area of adhesion should be free from dust, dirt, moisture,
and frost to allow maximum adhesion of the pressure-sensitive tape. Ensure that all seams are taped with applied pressure to allow for
maximum and continuous adhesion of the pressure-sensitive Drago Tape. Adhesives should be installed above 40°F. In temperatures
below 40°F, take extra care to remove moisture/frost from the area
of adhesion.
3. ASTM E1643 requires sealing the perimeter of the slab. Extend
vapor retarder over footings and seal to foundation wall or
grade beam at an elevation consistent with the top of the slab
or terminate at impediments such as waterstops or dowels.
Consult the structural and environmental engineer of record
before proceeding.
IMPORTANT: Please read these installation instructions completely, prior to beginning any Drago Wrap installation. The following installation
instructions are generally based on ASTM E1643 – Standard Practice for Selection, Design, Installation, and Inspection of Water Vapor Retarders
Used in Contact with Earth or Granular Fill Under Concrete Slabs. There are specific instructions in this document that go beyond what is stated in
ASTM E1643 to take into account vapor intrusion mitigation. If project specifications call for compliance with ASTM E1643, then be sure to review
the specific installation sections outlined in the standard along with the techniques referenced in these instructions.
DRAGO TAPE
Minimum 12” overlap
VAPOR INTRUSION BARRIER
Fig.1: UNDER-SLAB INSTALLATION
DRAGO® WRAP VAPOR INTRUSION BARRIERINSTALLATION INSTRUCTIONS
UNDER-SLAB INSTRUCTIONS:
FOOTING
DRAGOTACK TAPE
VAPOR INTRUSION BARRIER
Fig.2a: SEAL TO PERIMETER WALL Fig. 2b: SEAL TO FOOTING
FOOTING
DRAGOTACK TAPE
VAPOR INTRUSION BARRIER
SEAL TO PERIMETER WALL OR FOOTING WITH DRAGOTACK
TAPE: (Fig. 2a and 2b)
a. Make sure area of adhesion is free of dust,
dirt, debris, moisture, and frost to allow
maximum adhesion.
b. Remove release liner on one side and stick to
desired surface.
c. When ready to apply Drago Wrap, remove the
exposed release liner and press firmly against
DragoTack Tape to secure.
d. If a mechanical seal is needed, fasten a
termination bar over the top of the Drago Wrap
inline with the DragoTack Tape.
NOTE: If sealing to the footing, the footing should receive
a hand float finish to allow for maximum adhesion.
1. Drago Wrap has been engineered to be installed over a tamped aggregate, sand, or earth base. It is not typically necessary
to have a cushion layer or sand base, as Drago Wrap is tough enough to withstand rugged construction environments.
NOTE: Drago Wrap must be installed with the gray facing the subgrade.
P2 of 4
Continued ... Note - legal notice on last page.
DETAIL PATCH FOR PIPE PENETRATION SEALING: (Fig. 4b)a. Install Drago Wrap around pipe penetrations by slitting/cutting material as needed. Try to minimize void space
created.
b. If Drago Wrap is close to pipe and void space is minimized, proceed to step d.
c. If void space exists, then
i. Cut a detail patch to a size and shape that creates a 6-inch overlap on all edges around the void space at
the base of the pipe.
ii. Cut an “X” slightly smaller than the size of the pipe diameter in the center of the detail patch and slide
tightly over pipe.
iii. Tape the edges of the detail patch using Drago Tape.
d. Seal around the base of the pipe using Drago Tape and/or Drago Sealant and Drago Sealant Form.
i. If Drago Sealant is used to seal around pipe, make sure Drago Wrap is flush with the base of the
penetration prior to pouring Drago Sealant.
5. IMPORTANT: ALL PENETRATIONS MUST BE SEALED. All pipe, ducting, rebar, and block outs should be sealed using
Drago Wrap, Drago Tape, and/or Drago® Sealant and Drago® Sealant Form. (Fig. 4a). Drago accessories should be
sealed directly to the penetrations.
DRAGO TAPE
DAMAGED AREA
DRAGO TAPE DRAGO TAPE
SMALL HOLE
VAPOR INTRUSION BARRIER
VAPOR INTRUSION BARRIER VAPOR INTRUSION BARRIER VAPOR INTRUSION BARRIER
Fig. 3: SEALING DAMAGED AREAS
4. In the event that Drago Wrap is damaged during or after installation, repairs must be made. Cut a piece of Drago Wrap
to a size and shape that covers any damage by a minimum of 6 inches in all directions. Clean all adhesion areas of dust,
dirt, moisture, and frost. Tape down all edges using Drago Tape. (Fig. 3)
MINIMAL VOID SPACE CREATED
DRAGO SEALANTDRAGO TAPE
OR DRAGO SEALANT FORM
VAPOR INTRUSION BARRIER VAPOR INTRUSION BARRIER VAPOR INTRUSION BARRIER
Fig. 4a: PIPE PENETRATION SEALING
DRAGO TAPE
LARGE VOID SPACE CREATED
DRAGO SEALANTDRAGO TAPE
OR DRAGO SEALANT FORM
VAPOR INTRUSION BARRIERVAPOR INTRUSION BARRIERVAPOR INTRUSION BARRIER
VAPOR INTRUSION BARRIER
Fig. 4b: DETAIL PATCH FOR PIPE PENETRATION SEALING
Continued ... Note - legal notice on last page.
P3 of 4
DRAGO® WRAP VAPOR INTRUSION BARRIERINSTALLATION INSTRUCTIONS
STEGO INDUSTRIES, LLC • SAN CLEMENTE, CA • 949-257-4100 • 877-464-7834 • www.stegoindustries.com
*Stego Industries, LLC (“Stego”) is the exclusive Representative for Drago Wrap and Pango Wrap. All designated trademarks are the intellectual property of Stego or the entity for which it is acting as a Representative. Installation, Warranty, State Approval Information and Disclosure of Representative Status: www.stegoindustries.com/legal. ©2019 Stego Industries, LLC. All rights reserved. 11/2019
NOTE: While Drago Wrap installation instructions are based on ASTM E1643 - Standard Practice for Selection, Design, Installation, and Inspection of Water Vapor Retarders Used in Contact with Earth or Granular Fill Under Concrete Slabs, these instructions are meant to be used as a guide, and do not take into account specific job site situations. Consult local building codes and regulations along with the building owner or owner’s representative before proceeding. If you have any questions regarding the above-mentioned installation instructions or products, please call us at 877-464-7834 for technical assistance. While Stego Industries’ employees and representatives may provide technical assistance regarding the utility of a specific installation practice or Stego product, they are not authorized to make final design decisions.
MULTIPLE PIPE PENETRATION SEALING: (Fig. 5)
NOTE: Multiple pipe penetrations in close proximity may be most efficiently sealed using Drago Wrap, Drago
Sealant, and Drago Sealant Form for ease of installation.
a. Cut a hole in Drago Wrap such that the membrane fits over and around the base of the pipes as closely as
possible, ensuring that it is flush with the base of the penetrations.
b. Install Drago Sealant Form continuously around the entire perimeter of the group of penetrations and at least
1 inch beyond the terminating edge of Drago Wrap.
c. Pour Drago Sealant inside of Drago Sealant Form to create a seal around the penetrations.
d. If the void space between Drago Wrap and the penetrations is not minimized and/or the base course allows for
too much drainage of sealant, a second coat of Drago Sealant may need to be poured after the first application
has cured.
IMPORTANT: AN INSTALLATION COMPLETED PER THESE INSTRUCTIONS SHOULD CREATE A MONOLITHIC MEMBRANE
BETWEEN ALL INTERIOR INTRUSION PATHWAYS AND VAPOR SOURCES BELOW THE SLAB AS WELL AS AT THE SLAB
PERIMETER. THE UNDERLYING SUBBASE SHOULD NOT BE VISIBLE IN ANY AREA WHERE CONCRETE WILL BE PLACED. IF
REQUIRED BY THE DESIGN ENGINEER, ADDITIONAL INSTALLATION VALIDATION CAN BE DONE THROUGH SMOKE TESTING.
Stego Industries* recommends the use of BEAST vapor barrier-safe concrete accessories, to help eliminate the use of non-permanent penetrations in Drago Wrap installations.
MINIMAL VOID SPACE CREATED
DRAGO SEALANT
DRAGO SEALANT FORM DRAGO SEALANT FORM DRAGO SEALANT FORM
DRAGO SEALANT
VAPOR INTRUSION BARRIER VAPOR INTRUSION BARRIER VAPOR INTRUSION BARRIER VAPOR INTRUSION BARRIER
Fig. 5: MULTIPLE PIPE PENETRATION SEALING
BEAST® CONCRETE ACCESSORIES - VAPOR BARRIER SAFE
BEAST® SCREED BEAST® HOOK
P3 of 4
BEAST® FORM STAKE
Locate itand lock it down!Improve efficiency and maintain concrete floor levelness with the BEAST SCREED SYSTEM!
The Stego barrier-safe forming system that prevents punctures in the vapor barrier.
P1 OF 2
DRAGO® TAPE
A STEGO TECHNOLOGY, LLC INNOVATION | VAPOR RETARDERS 07 26 00, 03 30 00 | VERSION: 11/27/2019
1. PRODUCT NAME
DRAGO TAPE
2. MANUFACTURER
c/o Stego® Industries, LLC*
216 Avenida Fabricante, Suite 101
San Clemente, CA 92672
Sales, Technical Assistance
Ph: [phone]
Fx: [phone]
www.stegoindustries.com
3. PRODUCT DESCRIPTION
USES: Drago Tape is a low-permeance tape designed for protective sealing, seaming, splicing, and patching applications
where a highly conformable material is required. It has been engineered to bond specifically to Drago® Wrap Vapor
Intrusion Barrier, making it ideal for sealing Drago Wrap seams and penetrations.
COMPOSITION: Drago Tape is a multi-layered plastic extrusion that combines uniquely designed materials with only
high grade, prime, virgin resins, and an acrylic, pressure-sensitive adhesive.
SIZE: Drago Tape is 3.75" x 180'. Drago Tape ships 12 rolls in a case.
4. TECHNICAL DATA
APPLICABLE STANDARDS:
Pressure Sensitive Tape Council (PSTC)
• PSTC 101 – International Standard for Peel Adhesion of Pressure Sensitive Tape
• PSTC 107 – International Standard for Shear Adhesion of Pressure Sensitive Tape
American Society for Testing & Materials (ASTM)
• ASTM E1643 – Standard Practice for Selection, Design, Installation, and Inspection of Water Vapor Retarders
Used In Contact with Earth or Granular Fill under Concrete Slabs.
TABLE 4.1: PHYSICAL PROPERTIES OF DRAGO TAPE
PROPERTY TEST RESULTS
Total Thickness 8 mil
Permeance ASTM F1249 0.031 perms
Tensile Strength MD ASTM D882 20.5 lbf/in
Elongation (at break) MD ASTM D882 702%
180° Peel Adhesion PSTC 101 20-min dwell to Drago Wrap 50.1 oz/in
PSTC 101 24-hour dwell to Drago Wrap 92.9 oz/in
Shear Adhesion PSTC 107 24-hour dwell (1" x 1", 1kg/wt) to Drago Wrap 188 minutes
Note: perm unit = grains/(ft2*hr*in-Hg)
Continued... Note – legal notice on page 2.
DRAGO® TAPE
A STEGO TECHNOLOGY, LLC INNOVATION | VAPOR RETARDERS 07 26 00, 03 30 00 | VERSION: 11/27/2019
DATA SHEETS ARE SUBJECT TO CHANGE. FOR MOST CURRENT VERSION, VISIT WWW.STEGOINDUSTRIES.COM
[phone] | www.stegoindustries.com
*Stego Industries, LLC (“Stego”) is the exclusive Representative for Drago Wrap and Pango Wrap. All designated trademarks are the intellectual property
of Stego or the entity for which it is acting as a Representative. Installation, Warranty, State Approval Information and Disclosure of Representative Status: www.stegoindustries.com/legal. ©2019 Stego Industries, LLC. All rights reserved.
5. INSTALLATION
SEAMS: Overlap Drago Wrap a minimum 12 inches and seal with Drago Tape. Make sure the area of adhesion is free
from dust, moisture and frost to allow maximum adhesion of the pressure-sensitive tape.
PIPE PENETRATION SEALING:
• Install Drago Wrap around pipe by slitting/cutting material.
• If void space is minimal, seal around base of pipe with Drago Tape and/or Drago® Sealant and Drago® Sealant Form.
DETAIL PATCH FOR PIPE PENETRATION SEALING:
• Cut a piece of Drago Wrap that creates a 6 inch overlap around all edges of the void space.
• Cut an “X” slightly smaller than the size of the pipe diameter in the center of the detail patch.
• Slide detail patch over pipe, secure tightly.
• Tape down all sides of detail patch with Drago Tape.
• Seal around base of pipe with Drago Tape and/or Drago Sealant and Drago Sealant Form.
Drago Tape should be installed above 40°F. In temperatures below 40°F, take extra care to remove moisture or frost
from the area of adhesion. Ensure that the entirety of all seams are taped with applied pressure to allow for maximum
and continuous adhesion of the pressure-sensitive Drago Tape.
Review Drago Wrap’s complete installation instructions prior to installation.
6. AVAILABILITY & COST
Drago Tape is available nationally through our network of building supply distributors. For current cost information,
contact your local Drago distributor or Stego Industries’ Sales Representative.
7. WARRANTY
Stego Industries, LLC believes to the best of its knowledge, that specifications and recommendations herein are
accurate and reliable. However, since site conditions are not within its control, Stego Industries does not guarantee
results from the use of the information provided and disclaims all liability from any loss or damage. Stego Technology,
LLC does offer a limited warranty on Drago Wrap. Please see www.stegoindustries.com/legal.
8. MAINTENANCE
Store Drago Tape in a dry and temperate area.
9. TECHNICAL SERVICES
Technical advice, custom CAD drawings, and additional information can be obtained by contacting Stego Industries or
by visiting the website.
Contact Number: [phone]
Website: www.stegoindustries.com
10. FILING SYSTEMS
• www.stegoindustries.com
P2 OF 2
P1 OF 2
DRAGOTACK™ TAPE
A STEGO TECHNOLOGY, LLC INNOVATION | VAPOR RETARDERS 07 26 00, 03 30 00 | VERSION: 2/22/2019
1. PRODUCT NAME
DRAGOTACK TAPE
2. MANUFACTURER
c/o Stego® Industries, LLC*
216 Avenida Fabricante, Suite 101
San Clemente, CA 92672
Sales, Technical Assistance
Ph: [phone]
Fx: [phone]
www.stegoindustries.com
3. PRODUCT DESCRIPTION
TABLE 4.1: PHYSICAL PROPERTIES OF DRAGOTACK TAPE
PROPERTY TEST RESULTS
Dimensions 2" x 50'
Total Thickness 30 mil
Color Grey
Material Synthetic rubber blend
Permeance ASTM F1249 0.03 perms (30 mil) Adhesion to Steel ASTM D1000 12.5 lbs/in width
Chemical Resistance No significant change to(TCE, PCE, Toluene, Xylene) ASTM D471 / D543 mass or volume.
Installation Temperature 40°F / 110°
In Service Temperature Range -20°F / +140°F
VOC Content No VOCs, 100% solids
Note: perm unit = grains/(ft2*hr*in-Hg)
USES: DragoTack Tape is a solvent-resistant, double-sided adhesive strip used to bond and seal Drago® Wrap Vapor
Intrusion Barrier to concrete, masonry, wood, metal, and other surfaces. DragoTack Tape is a flexible and moldable
material to allow for a variety of applications and installations.
COMPOSITION: DragoTack Tape is made from a solvent-resistant blend of synthetic rubber and resins.
SIZE: DragoTack Tape is 2" x 50'. DragoTack Tape ships 12 rolls in a case.
4. TECHNICAL DATA
Continued... Note – legal notice on page 2.
DRAGOTACK™ TAPE
A STEGO TECHNOLOGY, LLC INNOVATION | VAPOR RETARDERS 07 26 00, 03 30 00 | VERSION: 2/22/2019
DATA SHEETS ARE SUBJECT TO CHANGE. FOR MOST CURRENT VERSION, VISIT WWW.STEGOINDUSTRIES.COM
[phone] | www.stegoindustries.com
*Stego Industries, LLC (“Stego”) is the exclusive Representative for Drago Wrap and Pango Wrap. All designated trademarks are the intellectual property
of Stego or the entity for which it is acting as a Representative. Installation, Warranty, State Approval Information and Disclosure of Representative Status: www.stegoindustries.com/legal. ©2019 Stego Industries, LLC. All rights reserved.
5. INSTALLATION
TO WALLS AND FOOTINGS: Make sure the area of adhesion is free of dust, dirt, debris, moisture, and frost to allow
maximum adhesion. Remove release liner on one side and stick to desired surface. When ready to apply Drago Wrap,
remove the exposed release liner and press Drago Wrap firmly against DragoTack Tape to secure.
Cut DragoTack Tape using a utility knife or scissors. Cut DragoTack Tape before removing the release liner for easier
cutting. Install DragoTack Tape between 40°F and 110°F.
Review Drago Wrap’s complete installation instructions prior to installation.
6. AVAILABILITY & COST
DragoTack Tape is available nationally through our network of building supply distributors. For current cost information,
contact your local Drago distributor or Stego Industries’ Sales Representative.
7. WARRANTY
Stego Industries, LLC believes to the best of its knowledge, that specifications and recommendations herein are
accurate and reliable. However, since site conditions are not within its control, Stego Industries does not guarantee
results from the use of the information provided and disclaims all liability from any loss or damage. Stego Technology,
LLC does offer a limited warranty on Drago Wrap. Please see www.stegoindustries.com/legal.
8. MAINTENANCE
Store DragoTack Tape in a dry and temperate area.
9. TECHNICAL SERVICES
Technical advice, custom CAD drawings, and additional information can be obtained by contacting Stego Industries or
by visiting the website.
Contact Number: [phone]
Website: www.stegoindustries.com
10. FILING SYSTEMS
• www.stegoindustries.com
P2 OF 2
P1 OF 2
DRAGO® SEALANT FORM
A STEGO TECHNOLOGY, LLC INNOVATION | VAPOR RETARDERS 07 26 00, 03 30 00 | VERSION: 2/22/2019
1. PRODUCT NAME
DRAGO SEALANT FORM
2. MANUFACTURER
c/o Stego® Industries, LLC*
216 Avenida Fabricante, Suite 101
San Clemente, CA 92672
Sales, Technical Assistance
Ph: [phone]
Fx: [phone]
www.stegoindustries.com
3. PRODUCT DESCRIPTION
USES: Drago Sealant Form is used in conjunction with Drago® Sealant to help create an efficient and effective seal
around pipe penetrations in Drago® Wrap Vapor Intrusion Barrier.
COMPOSITION: Drago Sealant Form is a low-density, cross-linked, closed-cell polyethylene foam with an acrylic,
pressure-sensitive adhesive.
SIZE: Drago Sealant Form is ½" x ½" x 24". Drago Sealant Form comes in 200 pieces per case (10 boxes of 20 pieces).
4. TECHNICAL DATA
TABLE 4.1: PHYSICAL PROPERTIES OF DRAGO SEALANT FORM
PROPERTY RESULTS
Dimensions ½” x ½” x 24”
Color White
Weight 0.11 oz (3.1 grams)
Continued... Note – legal notice on page 2.
5. INSTALLATION
PENETRATIONS: Make sure the area of adhesion is free of dust, debris, moisture, and frost to allow maximum adhesion.
When ready to apply to Drago Wrap, remove the release liner and press Drago Sealant Form firmly against Drago Wrap
to secure. Install Drago Sealant Form continuously around the entire perimeter of the penetration(s) and at least 1 inch
beyond the terminating edge of Drago Wrap. Install Drago Sealant Form between 40°F and 110°F. Pour Drago Sealant
inside of Drago Sealant Form to create a seal around the penetration(s).
Review Drago Wrap’s complete installation instructions prior to installation.
6. AVAILABILITY & COST
Drago Sealant Form is available nationally through our network of building supply distributors. For current cost
information, contact your local Drago distributor or Stego Industries’ Sales Representative.
DRAGO® SEALANT FORM
A STEGO TECHNOLOGY, LLC INNOVATION | VAPOR RETARDERS 07 26 00, 03 30 00 | VERSION: 2/22/2019
DATA SHEETS ARE SUBJECT TO CHANGE. FOR MOST CURRENT VERSION, VISIT WWW.STEGOINDUSTRIES.COM
[phone] | www.stegoindustries.com
*Stego Industries, LLC (“Stego”) is the exclusive Representative for Drago Wrap and Pango Wrap. All designated trademarks are the intellectual property
of Stego or the entity for which it is acting as a Representative. Installation, Warranty, State Approval Information and Disclosure of Representative Status: www.stegoindustries.com/legal. ©2019 Stego Industries, LLC. All rights reserved.
7. WARRANTY
Stego Industries, LLC believes to the best of its knowledge, that specifications and recommendations herein are
accurate and reliable. However, since site conditions are not within its control, Stego Industries does not guarantee
results from the use of the information provided and disclaims all liability from any loss or damage. Stego Technology,
LLC does offer a limited warranty on Drago Wrap. Please see www.stegoindustries.com/legal.
8. MAINTENANCE
Store Drago Sealant Form in a dry and temperate area.
9. TECHNICAL SERVICES
Technical advice, custom CAD drawings, and additional information can be obtained by contacting Stego Industries or
by visiting the website.
Contact Number: [phone]
Website: www.stegoindustries.com
10. FILING SYSTEMS
• www.stegoindustries.com
P2 OF 2

Attachment C-3

Big Foot Slotted PVC Pipe Product Specification Sheet

Attachment C-4

Soil Gas Collector Mat Product Information and Installation Guide

Soil Gas Collector Mat PDS 05-140-1
Safety data for our custom-formed, high-impact polystyrene core is shown below.
RECOMMENDED MAXIMUM OCCUPATIONAL EXPOSURE LIMITS
PHYSICAL DATA FIRE HANDLING MEASURES
ECOLOGICAL INFORMATION & DISPOSAL
Component CAS No. Exposure Limits Hazard Data
OSHA—Pel.
Polystyrene 9003-55-6 None established No hazardous ingredients
Properties Data
Form Molded Sheet
Color Black
Odor None
Boiling Point Not applicable
Melting Point (°F) 270
Flash Point (°F) Not applicable
Flammable Limits (°F) Not applicable
VOC 0%
Volatility <0.75% Moisture
Specific gravity 1.02–1.08
Solubility in Water Not soluable
Properties
Extinguishing Media
Fire Fighting Procedure
Properties
Ecological information
Toxicological
Disposal
Data
Water Spray (except when fire is of electrical origin), Foam, Dry powder, CO2
Self-contained breathingapparatus & suitable protective equipment
Data
Not associated with any
known ecological problems
No negative effects on
humans
Polystyrene recycles well.
Can be disposed of as
solid waste or burned
in a suitable installation
subject to local regulations.
Effluents disposal should
also be in accordance
with local legislation.
www.soilgasmat.com 719-444-0646 [e-mail]
Product Materials
& Safety Information
Made inthe USA
Perfect for Radon Control Systems in new home construction
The economical alternative to aggregate systems—quick and easy installation
STABILITY & REACTIVITY
SPECIAL HANDLING INFORMATION
Properties Data
Stablitity Stable
Incompatibility (Materials to avoid) Can react with strong oxidixers
Hazardous Decomposition Carbon dioxide, carbon monoxide, various hydrocarbons
Conditions to avoid None
Description Information
Handling & Storage Precaution Protect against flame & intense heat. Avoid breathing hot vapors.
Eye Protection, Recommended Use OSHA approved safety glasses when handling
Skin Wash with soap & water. Get medical attention if irritation develops
or persists.
Other Clothing & Equipment Gloves recommended due to sharp edges.
Work Practices, Hygiene Use standard work practices for hygienic safety.
Handling & Storage, Other Store in well-ventillated area. Avoid extreme heat & sources of ignition or
open flame.
Protective Measures, Maintenance Not applicable
www.soilgasmat.com 719-444-0646 [e-mail]
To the best of our knowledge, the information presented herein is accurate.However, it is not a warranty or a guarantee and is provided for reference only.
Soil Gas Collector Mat PDS 05-140-1
The economical alternative to aggregate systems—quick and easy installation
CUSPATED PLASTIC
COVER FABRIC
Material Physical Properties
Property Test Method Value
Specific Gravity (g/cc) ASTM D-792 1.04
Melt Flow @ 200°C/5000g (g/10 min) ASTM D-1238 2.5
Tensile Strength @ Yield (psi) ASTM D-638 2,900
Tensile Modulus (psi) ASTM D-638 275,000
Elongation @ Break (%) ASTM D-638 70
Flexural Modulus (psi) ASTM D-790 300,000
Impact Strength, Notched Izod @ 73°F (ft-lb/in) ASTM D-256 2.1
Heat Deflection Temperature @ 264 psi (°F) ASTM D-648 183
Vicat Softening Point (°F) ASTM D-1525 210
Property Test Method Value
Grab Tensile (lbs) ASTM D4632 130
Elongation (%) ASTM D4632 > 50
Trapezoid Tear (lbs) ASTM D4533 60
Puncture (lbs) ASTM D4833 41
Mullen Burst (psi) ASTM D3786 140
AOS (U.S. sieve number) ASTM D4571 70
Permittivity (sec-1) ASTM D4491 0.8
Permeability (cm/sec) ASTM D4491 0.04
Water Flow (gal/min/sf) ASTM D4491 60
UV Stability (%) ASTM D4355 70
www.soilgasmat.com 719-444-0646 [e-mail]
Product
Data Sheet
Made inthe USA
Perfect for Radon Control Systems in new home construction
The economical alternative to aggregate systems—quick and easy installation
www.soilgasmat.com 719-444-0646 [e-mail]
To the best of our knowledge, the information presented herein is accurate.However, it is not a warranty or a guarantee and is provided for reference only.
BINDING METHOD
Material Physical Properties CONTINUED
Property Test Method Value
External Binder Standard Sewn
Type Stitching Standard Lock Stitch
Type Thread Standard HB92 Nylon
Tensile Strength (lbs) ASTM D4632 11
Thread Gage Standard 2 IOx4 denier
Chemically Impervious Standard MI Natural
Soil Gas Collector Mat PDS 05-140-1
Safety data for our non-woven, spun-bonded, polypropylene, gray geotextile fabric is shown below.
PHYSICAL DATA FIRE HANDLING MEASURES
ECOLOGICAL INFORMATION & DISPOSAL
Properties Data
Form Molded Sheet
Color Black
Odor None
Boiling Point Not applicable
Melting Point (°F) 270
Flash Point (°F) Not applicable
Flammable Limits (°F) Not applicable
Auto ignition temperature Not applicable
Vapor Pressure (Pascal) Not volatile
Density (g/cm3) @20 ºC 0.91
Solubility in Water Not soluable
Thermal decomposition (ºF) Above 570
Properties
Extinguishing Media
Fire Fighting Procedure
Properties
Ecological information
Toxicological
Disposal
Data
Water Spray (except when fire is of electrical origin), Foam, Dry powder of CO2
Self-contained breathingapparatus & suitable protective equipment
Data
Not associated with any
known ecological problems
No negative effects on
humans
Polystyrene recycles well.
Can be disposed of as
solid waste or burned
in a suitable installation
subject to local regulations.
Effluents disposal should
also be in accordance
with local legislation.
www.soilgasmat.com 719-444-0646 [e-mail]
Product Materials
& Safety Information
RECOMMENDED MAXIMUM OCCUPATIONAL EXPOSURE LIMITS
Component CAS No. Exposure Limits Hazard Data
OSHA—Pel.
Polystyrene 9003-07-0 None established No hazardous ingredients
Made inthe USA
Perfect for Radon Control Systems in new home construction
The economical alternative to aggregate systems—quick and easy installation
STABILITY & REACTIVITY
SPECIAL HANDLING INFORMATION
Properties Data
Stablitity Stable
Incompatibility (Materials to avoid) Can react with strong oxidixers, base, or acid
Hazardous Decomposition Carbon dioxide, carbon monoxide, low molecular weight oxygenated organic
Conditions to avoid None
Description Information
Handling & Storage Precaution Avoid breathing hot vapors, oiled mists, and airborne fibers.
Eye Protection, Recommended Use OSHA approved safety glasses when handling rolls
Skin Wash with soap & water. Get medical attention if irritation develops
or persists.
Other Clothing & Equipment Not applicable
Work Practices, Hygiene Use standard work practices for hygienic safety.
Handling & Storage, Other Store rolls In accordance with good material handling practice
Protective Measures, Maintenance Not applicable
www.soilgasmat.com 719-444-0646 [e-mail]
To the best of our knowledge, the information presented herein is accurate.However, it is not a warranty or a guarantee and is provided for reference only.
Soil Gas Collector Mat PDS 05-140-1
Our non-woven, spun-bonded, polypropylene, gray geotextile fabric with the minimum
values shown below.
www.soilgasmat.com 719-444-0646 [e-mail]
Product Materials—
Technical Specifications
& Performance
Property Test Method Value
Grab Tensile Strength (lbs) ASTM D 4632 130
Elongation (%) ASTM D 4632 >50
Trapezoid Tear (lbs) ASTM D 4533 60
Puncture (lbs) ASTM D 4833 41
Mullen Burst (psi) ASTM D 3786 140
AOS (U.S. sieve no.) ASTM D 4751 70
Permittivity (sec-1) ASTM D 4491 0.8
Permeability (cm/sec) ASTM D 4491 0.04
Vertical Water Flow Rate (gal/min/sf) ASTM D 4491 60
UV Stability (%) ASTM D 4355 70
Made inthe USA
Soil Gas Collector Mat PDS 05-140-1
Our custom-formed, high-impact polystyrene core with the minimum values shown below.
www.soilgasmat.com 719-444-0646 [e-mail]
Product Materials—
Technical Specifications
& Performance
Properties Test Method Value
Specific Gravity ASTM D 792 1.04
Melt Flow (g/10min) ASTM D 1238 2.5
Tensile @ Yield (psi) ASTM D 638 2900
Tensile Modulus (psi) ASTM D 638 275,000
Elongation @ Break (%) ASTM D 638 70
Flexural Modulus (psi) ASTM D 790 300,000
Notched Izod @ 73ºF (ft-lb/in) ASTM D 256 2.1
HDT @ 264 psi (ºF) ASTM D 648 183
Vicat Softening Point (ºF) ASTM D 1525 210
Made in
the USA
SOIL GAS COLLECTOR MAT
Installation Guide
Radon Ready New Construction
Time-saving, low-cost solution
Easy Installation
Reduce Liability!
Used in all 50 states and
Internationally
Compliant under multiple codes:
AARST-ANSI, ASTM,
IRC Appendix F,
EPA, HUD, and more!
Simple, modern solution for soil
gases: radon, vapor, and VOCs
www.RadonMat.comPhotos, videos, & more @
MADE IN THE USA
SOIL GAS COLLECTOR MAT FOR RADON READY NEW CONSTRUCTION
According to the US EPA’s model stan-dards for radon control systems in new building construction, a means for col-lecting soil gas should be installed be-neath the slab.
More and more mitigators and buildiers are using PDS’ soil gas collector mat because its installation does not entail any special coordination with plumb-ers or other site contractors. Low pro-file mat saves time as it removes the need for trenching. Just lay radon mat down around the inside perimeter of the foundation, secure it with spikes or landscaping staples, and pour the con-crete.
SGC mat is superior to other mat sys-tems because of its thickness and it has a geotextile fabric cloth surround-ing the entire mat material. This fea-ture eliminates the need to lay a plas-tic barrier or sheet on top of the mat to protect the matrix. Using plastic sheeting can cause concrete cracking due to differential dewatering. The full fabric design greatly enhances both the installation as well as the quality of the concrete slab. When SGC mat is in-stalled below the slab, you’re providing an airspace that intercepts radon--and other soil gases and vapors--before it seeps into the building through the slab. SGC mat also works well as a soil gas collector beneath crawlspace bar-rier due to its low-profile.
WHY & HOW IT WORKS
The matting is a one inch high by twelve inch wide matrix enveloped in a geotextile filter fabric. 90% of the geomatrix is airspace, which means soil gas has room to move to the col-lection point. This creates incredible pressure field extension for post con-struction system activation. The mat can support concrete without com-pressing, yet is extremely lightweight and easy to handle.
This system allows for radon to flow through the filter fabric and into the airspace. The airspace does not clog because the filter fabric retains the underlying gravel and soil. The natural airflow through the mat then channels the radon to the T riser to pipe connec-tion. From there, hazardous gas can be vented safely through the roof of the building.
Another key element of a soil gas col-lection system is attaching the 4” riser to the mat, such that airflow is not restricted at this critical juncture. The soil gas T riser is unique as it has three ports, two redundant mat entries and one PVC connection to outside air. This unique fitting connects all three sides without special connections or fittings. common duct tape and caulk does the trick. 2
ADVANTAGES
NO TRENCHINGNO BACKFILLNO VAPOR BARRIER*

It’s called SOIL gas mat for a reason, Place directly on soil or substrate.
Low-profile (1” thick) gas mat does not require trenching.
SAFETY DATA & PRODUCT DATA SHEETS AVAILABLE @ www.RADONMAT.com 3
INSTALLATION INSTRUCTIONS
1. Begin work on the sub grade (soil or gravel) after the final preparation and
before the concrete is poured. Start with T-Riser(s) and work out to ensure
smooth mat placement. Position the T-Riser(s) in appropriate location(s) and
nail down with a 12” steel nail (T Nail) through precut center hole.
2. Slide mat into flat openings on either end of T-riser with a portion of the fab-
ric around the outside. Tape the fabric to the outside of the T-Riser with duct
tape and staple mat to the ground with landscape staples to ensure soil contact
remains during pour stage.
3. Mat is typically laid out in a rectangular loop in the largest area with branch-
es or legs into smaller areas (FREE plan design at www.radonmat.com). There
is no need to trench the mat. Roll out the SGC mat, smooth it onto the ground.
To avoid wrinkles and buckling, work away from the risers, stapling to the
ground as you go. The mat should be stapled every three to four feet, in addi-
ton to corners, tee junctions & ends.
5. Corners are constructed by peeling back the filter fabric, cutting two ends
of the matrix at 45 degree angles and butting (or overlapping: no more than
1/2”) the matrix together. Pull the filter fabric back and tape into place. Staple
across the joint of the matrix and each leg of the corner. Use a minimum of
four staples at each corner-- two across the joint and one on each leg.
6. The tees for branches and legs are constructed by slitting the fabric of the
main loop at the location desired. Cut the fabric of the branch at the edges and
expose two inces of the matrix. Cut off the exposed matrix and but the ma-
trix of the branch (or overlap 1/2”)to the matrix of the main loop. Pull the flter
fabric of the branch back over the main loop and tape into place. Staple across
joint of the matrix with two staples and one each on the branch and main loop.
Use a minimum of four staples at each tee, two across the joint and one on
each loop and branch.
4
7. All openings in the fabric at joints, tee’s, and ends of branches should be
taped to keep out concrete.
8. Stub up a few feet of 4” schedule 40 PVC* from all T risers before pour (or
cover T riser with duct tape). Seal with polyurethene caulk and screws. This
ensures no concrete aggregate enters the riser during slab pour. Be sure to
label “CAUTION RADON REDUCTION SYSTEM” on all pipe. *(6” PVC may be
substituted--for large multifamily projects. Simply cut T riser 4” insert away to
reveal 6” insert).
9. When the building is ready for the vent pipe to be installed above the slab,
fit to pre-stubbed PVC with PVC straight connect. If PVC was not preset, cut
duct tape from riser and insert 4” PVC pipe now. Seal with polyurethene caulk
and secure with screws. Always label “CAUTION RADON REDUCTION SYSTEM”
to avoid confusion on site and for the building occupants.
NOTE: The openings in the riser are laid out at 180 degrees to accomodate
straight runs of mat. However, if the riser is to be placed in a corner, which is
not uncommon, the front of the T can be cut and the SGC mat inserted into
the new opening. The side of the T that is unused should be sealed with tape.
This creates a 90 degree T which will allow corner placement for the riser. Mat
should always enter the T riser from at least two directions and exhaust to pipe
vertically.
SAFETY DATA & PRODUCT DATA SHEETS AVAILABLE @ www.RADONMAT.com 5
MAKING CORNERS AND SPLICES
The mat should be routed around the inside perimeter of the foundation. This
will require occasional corner junctions. Furthermore, splices will have to be
made to join two lengths of mat together. Corners and splices are very easy to
make, and do not require any special fittings. Cut back the filter fabric to reveal
the core material. In the case of a splice, merely overlap the core by at least
one corrugation, replace the cloth, and tape it. Use two landscape staples to
hold the splice in place. In the case of a corner, peel back geotextile fabric and
slice the core of the two adjoining legs at 45 degree angles which mirror each
other; overlap the edges by one corrugation; return grey geotextile fabric, tape
and staple the corner together.
6
CONNECTING THE MAT TO THE
T RISER
A convenient T-riser with dual entry al-
lows for either end of the loop of mat
to be secured to the riser. Slide the mat
into each end of the riser and tape the
edge to prevent wet concrete from en-
tering. Cap the riser to ensure no con-
crete enters. T Riser caps can be pur-
chased in lieu of duct tape. A prestub of
PVC pipe can also serve the same pur-
pose. See steps 8-9 above.
***Due to high product demand, several T riser de-signs have been tested and approved for sale. Your
riser may look different than the one pictured here,
however its function is the same. Ensure you stub
up the PVC pipe and seal all openings with tape so
that concrete does not enter during the pour. Se-cure mat to the ground with staples so riser does
not float.
7
FLAT OUTLET
SGC to PVC transition
SIDE VIEW GOING THRU FOOTER/ INTERMEDIATE WALL
SOIL GAS MAT SOIL GAS MAT
PVC PIPE
FOOTER/INTERMEDIATE WALL/ TRENCH
Soil Gas Mat
TOP VIEW GOING OVER FOOTER/WALL/TRENCH
GRAVEL OR SOIL UNDER MAT
Soil Gas MatSoil Gas Mat 4” sch. 40 PVC PIPE
GRAVEL OR SOIL UNDER MAT
TRENCHTRENCHTRENCH & FOOTER CROSSINGS
IDEAL FOR LONG SPANS8
STEEL SLEEVE
24” (36”) x 1” x 12”
SIDE VIEW GOING THRU FOOTER/ INTERMEDIATE WALL
SOIL GAS MAT SOIL GAS MAT
PVC PIPE
FOOTER/INTERMEDIATE WALL/ TRENCH
Soil Gas Mat
TOP VIEW GOING OVER FOOTER/WALL/TRENCH
GRAVEL OR SOIL UNDER MAT
Soil Gas MatSoil Gas Mat
GRAVEL OR SOIL UNDER MAT
TRENCHTRENCHSTEEL SLEEVE
available in 24” or 36”
STEEL SLEEVE 1” thick
IDEAL SHORT TRENCHES 9
POURING CONCRETE
The filter fabric that comes sewn around the soil gas collector prevents the wet
concrete from entering the mat and reducing its air collection capacity. The
only precaution that needs to be taken is that the fabric is duct taped closed at
seams of splices and corner to sufficiently keep the uncured concrete from en-
tering.
The mat also needs to be secured to the soil with landscape staples to prevent
the concrete from lifting off the soil while it is being applied. Re-enforcing bars
and wire can be laid on top of the mat.
Note: the mat is strong enough (4,300 psf) to withstand concrete workers and
their wheel barrows.
10
radon risk
radon-induced lung cancer claims the lives of over 22,000 Americans each year
FACT: Radon is found at dangerous levels in all 50 US states. The EPA action level is 4.0 pci/L or higher
FACT: All US Homes have high radon potential, even those without basements
FACT: Radon is the leading cause of lung cancer among “never smokers”
FACT: Radon is a nobel gas and a natural part of the Uranium 238 breakdown chain
FACT: Breathing 6.2 pci/L is the equivalent radiation dosage of a THREE chest x-rays each week for your lungs
FACT: Radon is colorless, odorless, and invisible to the naked eye
FACT: Radon testing is cheap and you can do it yourself!

get the facts @
www.RadonReality.com
For anything and everything radon, VISIT US @ www.radonPDS.com
about us
Professional Discount Supply | Radon
Family-owned and operated since 1996. Situated on Colorado’s front range, PDS focuses on generating radon awareness through one-on-one technical support and trouble-shooting. Our products have been successfully installed in all 50 states and several foreign countries.

We’re always just a phone call away.
719-444-0646
1902 Aerotech Drive, Ste 110
Colorado Springs, CO 80916
Distribution opportunities available,
Please call for availability in your market

Attachment C-5

Zurn Industries Floor Clean-out Product Specification Sheet

Attachment C-6

Empire Wind-Turbine Ventilator Specification Sheet
TURBINE VENTILATORS
CONSTRUCTION SPECIFICATIONS
“A”
THROAT SIZE
GUAGE NO. OF
BRACES
BRACE
MATERIALCROWN GALV.BLADE GALV.THROAT GALV.
4 24 28 26 3 ALUMINUM
6 24 28 26 3 ALUMINUM
8 24 28 26 3 ALUMINUM
10 24 28 26 3 ALUMINUM
12 24 28 24 3 ALUMINUM
14 22 26 24 3 ALUMINUM
16 22 26 24 3 STEEL
18 22 26 24 4 STEEL
20 20 26 24 4 STEEL
24 20 26 22 4 STEEL
DIMENSIONAL AND PERFORMACE DATA
“A”
THROAT SIZE
“B”
HEIGHT
“C”
OVERALL WIDTH
EXHAUSTED
CAPACITY*
APPROX.
SHIPPING WEIGHT
4 12 10 1/4 125 5
6 14 1/2 12 3/4 147 7
8 15 14 1/4 255 8
10 16 1/4 16 1/4 425 11
12 17 19 631 13
14 19 3/4 22 3/4 700 21
16 21 3/4 25 1/2 950 31
18 24 29 1200 38
20 25 1/4 31 5/8 1700 46
24 28 1/4 35 3/4 2350 58
*4 MPHWIND CFM

Attachment C-7

Wal-rich Corporation PVC Termination Screen
WAL-RICH CORPORATION • NEW PRODUCT BULLETIN
CALL [phone] · www.wal-rich.com · FAX [phone]
STAINLESS STEEL TERMINATION SCREENS
Ideal for use on high
efficiency heating equipment
Also as condensate trap
screen & vent stack guard.
Patent# D715,409
2202050 2” Stainless Steel Termination Screen22020523” Stainless Steel Termination Screen
2202054 4” Stainless Steel Termination Screen
2202056 6” Stainless Steel Termination Screen
2202060 1” Stainless Steel Termination Screen
Part# Description
made in usa
♦♦♦♦♦Prevent pests, debris, & leaves from entering vent piping
♦♦♦♦♦Push into hub for easy flush installation. No gluing!
♦♦♦♦♦Patented condensate channel prevents buildup & freezing
♦♦♦♦♦Professional grade finish