24051 Vapor Intrusion Mitigation Plan_Rev 1_20220112

Vapor Intrusion Mitigation Plan
Revision 1

Dilworth Auto Brownfields Property
South Boulevard & East Kingston Avenue
Brownfields Project No. 24051-20-060

H&H Job No. WPP-011 January 12, 2022

#C-1269 Engineering #C-245 Geology
i
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
Vapor Intrusion Mitigation Plan – Rev. 1 Dilworth Auto Service
South Boulevard & East Kingston Avenue Charlotte, North Carolina Brownfields Project No. 24051-20-060 H&H Job No. WPP-011

Table of Contents
1.0 Introduction ................................................................................................................ 1
2.0 Design Basis ................................................................................................................ 5
2.1 Base Course Layer and Vapor Barrier ..................................................................6
2.2 Horizontal Collection Piping, Vertical Riser Piping, and Turbine Fans ...............7
2.3 Monitoring Points ..................................................................................................8
2.4 General Installation Criteria ................................................................................10
3.0 Quality Assurance / Quality Control ..................................................................... 12
4.0 VIMS Effectiveness Testing .................................................................................... 14
4.1 Influence Testing .................................................................................................14
4.2 Pre-Occupancy Sub-Slab Soil Vapor Sampling ..................................................15
4.3 VIMS Effectiveness Results ................................................................................16
5.0 VIMS Effectiveness Monitoring ............................................................................. 19
6.0 Future Tenants & Building Uses ............................................................................ 20
7.0 Reporting .................................................................................................................. 21

Figures
Figure 1 Site Location Map
Figure 2 Site Map
ii
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
Attachments

Attachment A Vapor Intrusion Assessment Data Summary (Excerpts)
Attachment B Vapor Intrusion Mitigation Plan – Sheets VM-1, VM-2, VM-2A and VM-3
Attachment C-1 VaporBlock 20 (VBP-20) Product Specification Sheets & Installation
Instructions
Attachment C-2 Drago Wrap Product Specification Sheets & Installation Instructions
Attachment C-3 Big Foot Slotted PVC Pipe Product Specification Sheet
Attachment C-4 Zurn Industries Floor Clean-out Product Specification Sheet
Attachment C-5 Soil Gas Collector Mat Product Information and Installation Guide

1
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
Vapor Intrusion Mitigation Plan – Rev. 1 Dilworth Auto Service
South Boulevard & East Kingston Avenue Charlotte, North Carolina Brownfields Project No. 24051-20-060 H&H Job No. WPP-011
1.0 Introduction On behalf of White Point Partners, LLC and Greystar, Hart & Hickman, PC (H&H) has prepared
this Vapor Intrusion Mitigation Plan (VIMP) for the Phase I redevelopment of the Dilworth Auto
Service Brownfields property (Brownfields No. 24051-20-060) located at 120 E. Kingston
Avenue; 1700, 1708, 1714, 1720, and 1728 South Boulevard; and 101, 105, and 115 East
Boulevard in Charlotte, Mecklenburg County, North Carolina (Site). A Site location map is
provided as Figure 1, and the Site and surrounding area are shown in Figure 2.

The Site consists of seven contiguous parcels of land (Mecklenburg County Parcel Identification
Nos. 12306401, 12306402, 12306404, 12306405, 12306406, 12306407, and 12306408) totaling
approximately 2.3 acres, and an alleyway which extends southwest from 120 E. Kingston
Avenue to East Boulevard. The Site was developed with single-family residences and ancillary
structures as of at least 1905. Commercial development began at the Site in the 1920s and
continued until the late 1990s. Historical commercial facilities on the Site have included a
lumber warehouse, gas stations, automotive repair shops, and dry cleaners. The Site is currently
developed with a pharmacy/convenience store and three vacant commercial buildings.

To address potential environmental concerns associated with the Site, the Prospective Developer
(PD) elected to enter the Site into the North Carolina Department of Environmental Quality
(DEQ) Brownfields Program and received eligibility in a letter dated October 30, 2020. A
Notice of Brownfields Property (Brownfields Agreement) is currently pending and under review
by DEQ.

Current redevelopment plans for the Site include razing the existing Site buildings and
constructing a twenty-four-story multi-use (retail and residential) building. The proposed
2
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
development is called Ascent – South End. Two office buildings are planned on the
southwestern parcels (12306401, 12306402, and 12306404) for a future development, as a
separate construction deployment. This VIMP applies only to the Ascent – South End twenty-
four-story multi-use building. Site grading and redevelopment activities are expected to begin in
late 2021.

The ground floor (Floor 1) of the proposed building will be on grade and will consist of
commercial spaces including retail units, open-air loading zone, open-air parking deck entrance,
leasing, office, amenity, mechanical, and building services areas. The enclosed space of the
ground floor is approximately 26,300 square feet. Levels 2 through 8 will consist of open-air
parking with elevator lobbies, various mechanical rooms, trash chutes, and duct banks. Levels 9
through 25 will consist of residences, amenity spaces, and mechanical rooms.

In November 2020, H&H performed soil, groundwater, and exterior soil gas sampling and
methane screening activities at the Site. Methane was detected at trace levels in only one of the
eleven soil gas samples; however, this concentration (0.6% to 0.8% by volume) was not within
the explosive limits and is below the DEQ threshold of 1.25% by volume for methane.
Furthermore, differential pressure measurements collected from this sample indicated that the
localized trace levels of methane gas are stable. Therefore, methane vapor intrusion into the
proposed Site buildings does not appear to be a significant concern. The volatile organic
compounds (VOCs) benzene, chloroform, ethylbenzene, hexane, and naphthalene were detected
in one or more samples at concentrations exceeding the June 2021 DEQ Division of Waste
Management (DWM) Residential Sub-Slab and Exterior Soil Gas Screening Levels (SGSLs) but
below Non-Residential SGSLs. Cumulative risk calculations using the highest concentration of
each detected compound in any soil gas sample showed that the non-carcinogenic and
carcinogenic risk levels were below acceptable risk levels for both residential and non-residential
exposure scenarios.

Results of the November 2020 assessment activities were provided to the DEQ Brownfields
Program in a Brownfields Assessment Report dated February 1, 2021. In an email dated
3
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
April 16, 2021, the DEQ Brownfields Program requested additional soil and soil gas assessment
activities at the Site.

In August 2021, H&H completed further soil gas assessment activities in the location of a former
gas station in the northeastern portion of the Site. Three soil gas samples (SG-12, SG-13, and
SG-14) and a duplicate sample were collected where the highest levels of petroleum-related
groundwater contamination were identified during the November 2020 assessment. Benzene,
ethylbenzene, heptane, hexane, and o-xylene were detected in one or more samples at
concentrations higher than the Residential SGSLs but less than the Non-Residential SGSLs. In
samples SG-13, SG-14, and the SG-14 duplicate, detections of benzene, ethylbenzene, 1,2-
dichloroethane, naphthalene, 1,2,4-trimethylbenzene, 1,3,5-trimethylbenzene, o-xylene, and/or
m&p-xylenes were detected at concentrations which exceed the Residential and Non-Residential
SGSLs. The chlorinated solvent trichloroethene (TCE) was not detected above laboratory
method detection limits in the soil gas samples collected from the Site. In addition,
tetrachloroethene (PCE) was not detected above Residential SGSLs in any of the soil gas
samples.

Risk calculator results using data for the two samples of highest detections (SG-13 and SG-14)
from the former gas station area, indicated carcinogenic and/or non-carcinogenic risk levels were
above acceptable risk levels under residential and non-residential land use scenarios. Based on
results of the August 2021 soil gas sampling and risk calculations, there is a potential vapor
intrusion concern in the northeastern portion of the Site where the proposed mixed-use high-rise
building is proposed to be constructed.

The Brownfields Assessment Report documenting vapor intrusion assessment conducted at the
Site in August 2021 was submitted to DEQ on September 14, 2021. Analytical data summary
tables, a sample location map, and associated risk calculations are provided in Attachment A.
Due to risk calculator results of potential vapor intrusion risks at the Site, vapor intrusion
mitigation methods are warranted and the PD will install a vapor intrusion mitigation system
(VIMS) below the occupiable ground-level areas of the proposed building.

4
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
According to the 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 vapor intrusion mitigation condition in the pending
Brownfields Agreement. 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 NCDEQ 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 H&H’s
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
(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]
5
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
2.0 Design Basis
The VIMS design drawings are included in Attachment B as Sheets VM-1, VM-1A, VM-1B,
VM-2, VM-2A, and VM-3 (dated October 27, 2021) and 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 that discharge at the exterior face of the parking deck. The foundation of
the building will consist of two distinct column supported slab-on-grade areas on Level 1
separated by an open-air drive-through. Three commercial retail spaces (Retail 1, Retail 2, and
Retail 3) will be located in the southwest portion of the building. The northeast portion will
utility rooms, open-air parking entrance ramp, leasing office, lobby, and amenity area. Structural
footers are proposed to be located below load-bearing concrete masonry unit (CMU) walls
located on the ground floor, but some CMU walls that aren’t load-bearing are not proposed to
contain structural footers or thickened slabs.
The ground floor areas of Retail 1, Retail 2, and Retail 3 are approximately 5,700 square feet,
4,700 square feet, and 4,300 square feet, respectively. The ground floor space of the
northeastern amenity area is approximately 21,000 square feet. Vapor intrusion mitigation
measures are not warranted in the loading zone driveway area, the gas meter space, and parking
entrance ramp because these are open-air spaces that will be enclosed.

The commercial retail spaces, are pour-back areas that will be left without concrete 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 areas are included in this
VIMP.

The previous assessment sampling results and risk calculations indicate that a VIMS is a is
warranted for this building for petroleum related compounds. However, due to the lack of
chlorinated solvents present at the Site and because the proposed building footprint will be
located above the former gas station building, trench dams which are sometimes installed along
utility trenches to prevent air movement from Site areas with elevated concentrations to areas
6
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
with structures are not warranted on the Site. Furthermore, the proposed VIMS is designed to
prevent vapor intrusion from sub-surface features into the building.

2.1 Base Course Layer and Vapor Barrier

The VIMS includes placement of a minimum 5-inch base course stone (gravel) layer consisting
of high permeability stone (clean #57 stone, or similar high permeability stone approved by the
Engineer certifying the VIMP) below the concrete slab of the building. A vapor liner (vapor
barrier) will be installed above the base course stone layer (and directly beneath the slab). Please
note that the horizontal collection piping network will be installed within the base course
stonelayer prior to placement of the vapor liner. The horizontal vapor collection piping is
discussed further in Section 2.2. below. The piping layouts are shown on Sheets VM-1, VM-1A,
VM-1B, and section details are shown on Sheets VM-2, VM-2A, and VM-3 (Attachment B).

The vapor liner will consist of Vaporblock® Plus 20 (VBP20) manufactured by Raven Industries
(Raven). As an alternative, Drago® Wrap Vapor Intrusion Barrier (Drago Wrap) manufactured
by Stego® Industries (Stego) can be used. Technical specifications for each vapor liner product
are included in Attachment C. Vapor liners will be installed per manufacturer installation
instructions (Attachment C). The liners will be installed over the sub-slab clean stone to cover
the areas shown on Sheet VM-1. Each vapor liner manufacturer recommends select sealing
agents (mastics, tapes, etc.) for their product. Therefore, and in accordance with the
manufacturer installation instructions, the use of alternative vapor liner products not approved by
the manufacturers for sealing will not be used. One vapor liner product and associated
accessories should be used continuously throughout the installed system.

The exterior edges of the vapor liner 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 liner is damaged, torn, or punctured
during installation, a patch will be installed by overlaying a piece of vapor liner that is cut to the
7
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
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.

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 Engineer
certifying the VIMP, an alternative sealant product specified by the vapor liner manufacturer can
be used. Following successful installation of the vapor liner, the finished concrete slab will be
placed directly on top of the sealed vapor liner to further seal the seams and penetrations. For
the pour-back areas, the vapor barrier will be placed and properly sealed across areas following
installation of sub-slab horizontal collection piping. The vapor barrier will remain without
concrete cover until tenants purchase and prepare the slab in the commercial spaces.

2.2 Horizontal Collection Piping and Vertical Riser Piping
Passive sub-slab venting will be accomplished using open-ended pipes and horizontal perforated
collection piping which will collect vapor from beneath the ground floor slabs and discharge the
vapors at the exterior of the parking deck through vertical riser piping. Sub-slab piping will
consist of 3-inch diameter Schedule 40 (SCH 40) PVC piping and fittings, unless otherwise
specified in the VIMP. Above-slab piping will consist of 4-inch diameter metal piping (e.g. cast-
iron) with air-tight fittings. The piping layouts are shown on Sheets VM-1, VM-1A, and VM-1B
and section details are shown on Sheets VM-2, and VM-2A (Attachment B). Note that solid
sections of VIMS piping shall maintain a minimum 1% slope toward slotted sections to drain
potential condensation water. Product specifications for the slotted horizontal 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
8
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
gas collector mat will be connected to the proposed 4-inch diameter vertical risers using Radon
PDS-manufactured riser connection fittings. Product specifications for the soil gas collector mat
are provided in Attachment C.

The VIMP includes installation of open-ended metal pipes at the discharge end of the vertical
riser piping at the exterior of the parking deck. Discharge locations must be a minimum of 20 ft
above grade, 10 ft from the property line, and 10 ft from an operable opening (such as door or
window) or air intake into the building. The proposed discharge locations depicted in the design
sheets meet these requirements. In addition, the discharge locations are positioned to be a
minimum of 10-ft away from public areas where people may congregate. Note that discharge
locations at the parking deck depicted in the VIMS design may be repositioned within the
requirements specified above and pending approval by the Engineer certifying the VIMP.
Product specifications for the proposed slotted PVC piping are provided in Attachment C. An
electrical junction box or outlet (120 V required) will be installed in the deck near exhaust
discharge locations should connection of an electrical fan be warranted in the future.

2.3 Monitoring Points
Monitoring points constructed with 2-inch diameter SCH 40 PVC 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. In
addition, several temporary monitoring points constructed with 1-inch diameter SCH 40 PVC
pipe will also be installed and used to measure sub-slab vacuum influence measurements. The
monitoring point locations are shown on Sheet VM-1 and VM-1A, and section details and
specifications are included on Sheets VM-2, VM-2A, and VM-3 (Attachment A).

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. To limit disturbance to
tenants or residents during future monitoring events, the monitoring point access ports will be
located, in hallways, mechanical rooms, or in amenity spaces. In addition, several monitoring
points will be installed along the exterior perimeter of the building and the access port will be
9
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
secured within either a lockable weather-proof enclosure or flush-mount sewer cleanout-type
cover. Several monitoring points will be connected to extended sub-slab horizontal pipes which
place the intakes of the monitoring points below occupied spaces. The proposed temporary
monitoring points are located within areas that are intended to be frequently used by tenants with
finished floors and will server to provide more vacuum influence coverage across the slab.
Furthermore, temporary monitoring points TMP-A2 and TMP-B2 are located in Retail 1 and
Retail 2, respectively. The layouts of these retail areas are not yet known, so these points are
will be temporary until a tenant leases the space. Once upfit activities start, and based on the
initial influence testing, sampling results, and discussion with DEQ, permanent monitoring
points may be installed to replace these two temporary points.

The temporary monitoring points will be abandoned after influence testing and prior to building
finishing activities per permission of the design engineer and DEQ. Abandonment procedures
will include removal of the pipe, insertion of a vapor barrier seal such as with Raven Pour-N-
Seal™ or another design engineer approved sealant, and completed with a concrete seal to match
the existing slab and prior to installation of the final flooring. Product specifications for the
proposed floor cleanout covers are provided in Attachment C. In order to reduce VOCs from
construction 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).

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 Engineer certifying the VIMP. The replacement point(s) shall consist of
one of the specified designs on Sheets VM-2A and VM-3. DEQ will be notified in advance if
monitoring points are relocated significantly in relation to approved 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 type of monitoring point installed will be documented in as-built drawings.

The proposed monitoring points within the commercial tenant spaces (pour back areas) will
remain following completion of upfit activities. However, the locations of some permanent
10
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
monitoring points may need to be modified to accommodate tenant needs. If modifications to
the permanent monitoring point locations are necessary, a request for the modification will be
submitted for DEQ approval.

2.4 General Installation Criteria

The VIMS piping and monitoring points 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 monitoring points. The monitoring points and
riser duct piping must be capped with a removable slip-cap or plug immediately following
installation to prevent water and/or debris from entering the VIMS.

In the commercial pour-back areas, the spaces shall not be accessible by residents and will
remain secured until tenant(s) are undergoing upfit activities. If foot-traffic is expected in
commercial tenant spaces 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 spaces 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 that could potentially contain
compounds of concern. Furthermore, the construction contractors shall not use products
11
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
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, including but are not limited to building products, will be
included in the VIMS Installation Completion Report.
12
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
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 liner;
(2) Inspection of the vapor liner prior to pouring concrete;
(3) Inspection of above-grade vertical riser piping; and
(4) Inspection of exhaust installations 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
verify that the vapor barrier has been adequately sealed. Breaches in the vapor barrier identified
by visible smoke will be repaired during smoke testing activities.

Additional inspections will be conducted if the system(s) are activated to verify that the 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. As requested, and
whenever possible, the Engineer certifying the VIMP, or his/her designee, will provide DEQ
with 48-hour notice prior to conducting the inspections. Please note that 48-hrs notice to DEQ
may not be possible in some cases due to tight construction sequencing. In the event that 48-
hour notice is not possible, DEQ will be provided with as much notice as possible prior to an
inspection.

Additional Pour-Back Area Measures
The current property manager will be instructed to report activities in the pour-back areas (Retail
1, Retail 2, and Retail 3) that impact or may impact the vapor barrier to the design engineer. If
13
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
the vapor liner damaged at any time before the pouring of concrete floor slab, the vapor liner
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 a 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 these areas.

14
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
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 document sufficient depressurization
can be obtained should electric fans be needed in the future. Influence testing will be conducted
following installation of the horizontal collection piping, placement of the vapor liner, and
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 each monitoring point will be checked for vacuum. 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. Vacuum influence testing results will be
submitted to DEQ as part of 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 the VIMS
Installation Completion Report.

The pour-back areas in the commercial spaces will also be included in the pre-occupancy
influence testing. Influence testing will be conducted following the installation of vapor liner
prior to the pouring of concrete slab. 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.

15
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
4.2 Pre-Occupancy Sub-Slab Soil Vapor Sampling

After VIMS installation, but prior to occupancy of the building, sub-slab vapor samples will be
collected from select monitoring points to further evaluate the potential for structural vapor
intrusion. The sub-slab vapor samples will be collected from locations generally separated by
slab footings and at the furthest reaches of the VIMS. Vapor intrusion assessment analytical
results of samples collected in the footprint of the Floor 1 VIMS of the proposed building will be
used to separately evaluate risk to future occupants of the building. Three (3) sub-slab vapor
samples are proposed within the proposed commercial spaces, and three (3) are proposed within
the amenity/office area of the VIMS for a total of six (6) sub-slab vapor samples. Commercial
retail spaces’ sub-slab vapor samples will be collected from monitoring points MP-A1, MP-A2,
and MP-W2. Office/amenity area VIMS sub-slab vapor samples will be collected from
monitoring points MP-1, MP-2, and MP-3. 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 sample location. A shroud will be
constructed around the monitoring point and sub-slab soil vapor sampling train and canister. The
air within the shroud will be flooded with helium gas and the concentrations will be measured
and maintained using a calibrated helium gas detector. With helium concentrations within the
shroud maintained, sub-slab soil vapor 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 vapor samples will be collected over an approximate 10-minute period using
laboratory supplied 1-liter or 1.4-liter Summa canisters and laboratory supplied 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
16
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
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 full-list volatile organic compounds
(VOCs) by EPA Method TO-15. The analytical laboratory will be instructed to report vacuum
measurements as received 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 the DEQ DWM Residential SGSLs to the extent possible.

4.3 VIMS Effectiveness Results

The results and analysis of the sub-slab soil vapor sampling will be submitted to DEQ with the
final VIMS Installation Completion Report (discussed in Section 6.0). After receipt of the sub-
slab soil vapor sample analytical results, H&H will use the most recent version of the DEQ Risk
Calculator to evaluate cumulative vapor intrusion risks under a residential scenario for each
sample location. Although the three retail spaces are proposed for non-residential use, samples
collected in the retail spaces may be compared to residential screening levels as a conservative
measure. H&H will consider the VIMS effective if the calculated cumulative risks are less than
1x10-4 for potential carcinogenic risks and below a Hazard Index of 1.0 for potential non-
carcinogenic risks, in accordance with DEQ’s 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 are greater than 1x10-4 for potential carcinogenic risks and/or above a Hazard
Index of 1.0 for potential non-carcinogenic risks as a result of structural vapor intrusion,
confirmation sub-slab soil vapor or indoor air (see below) samples will be collected from the
area of concern. In the event that an additional round of samples indicates acceptable risk levels
are met, no further pre-occupancy sampling will be conducted. In the event that calculated
cumulative risks for a residential scenario continue to exceed acceptable levels for potential
carcinogenic risks (greater than 1x10-4) and/or potential non-carcinogenic risks (above a Hazard
Index of 1.0) as a result of structural vapor intrusion, considerations will be made to convert the
system from a passive system to an active system.
17
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
Indoor Air Sampling (if warranted)
If unacceptable risk levels are detected in the sub-slab soil gas samples (see above), then indoor
air samples will be collected in accordance with the DWM VI Guidance. The locations of the
indoor air samples will be selected based on areas where sub-slab soil gas results indicated risk
exceedances. Prior to the sampling, the proposed indoor air sample locations will be provided to
DEQ for review. During the indoor air sampling (if warranted), doors to the building exterior
and parking garage will be closed.

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 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 procedures to
a qualified laboratory for analysis of select VOCs by EPA Method TO-15. The select compound
list will be based upon the compounds detected in sub-slab soil vapor samples. 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 the DEQ DWM Residential Vapor Intrusion
Indoor Air Screening Levels (IASLs) to the extent possible. In addition, an Indoor Air Building
18
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
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.

19
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
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-surface vapors on the exterior of the parking
deck. As such, differential pressure monitoring is not anticipated. If the VIMS is converted to
an active system with electric fans based on post-construction VIMS efficacy testing results,
mitigation system modifications and plans for additional VIMS efficacy testing will be submitted
to the DEQ Brownfields Program for approval prior to implementation. Actual fans to be used
will be selected based on the results of the influence testing discussed in Section 4.0.

Post-construction VIMS effectiveness monitoring will include annual sub-slab soil gas sampling
at the locations indicated in Section 4.0. The sampling will be conducted using the procedures
described in this VIMP. If post-construction annual sampling event results indicate consistent or
decreasing concentrations within acceptable risk levels after two events, a request to modify or
terminate sampling will be submitted for DEQ review with DEQ written approval required prior
to modifications to the sampling frequency and locations.
20
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
6.0 Future Tenants & Building Uses
The future use of the proposed Site buildings includes one high-rise residential apartment
building with commercial areas located on the ground floor and a parking deck between the
commercial and residential levels. After occupancy of the Site buildings, the building owner or
property management group will maintain or contract for maintenance of the vapor mitigation
system. If vapor mitigation components are damaged or need to be altered for building
renovations, the building management will be instructed to contact the maintenance department.
The maintenance department shall contact a North Carolina licensed Professional Engineer to
oversee or inspect the 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
with “Vapor Mitigation – Contact Maintenance”, or similar language, on all accessible piping at
intervals of no greater than 10-linear feet.

Future VIMS maintenance and upkeep will be the responsibility of the building owner property
management group or. As part of the standard annual Land Use Restriction Update submittal
that is will be required as part of the pending Notice of Brownfields Property agreement, H&H
recommends the building owner or property management group 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.
21
https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/White Point Partners (WPP)/WPP-011 Dilworth Auto Service/VIMP/Revision 1/24051-20-060_Vapor Intrusion Mitigation Plan_Rev 1.doc
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. In addition, for the pour-back areas, addendum reports documenting subsequent
inspections and influence testing after tenant upfit activities are complete will be submitted under
separate cover to DEQ. The report(s) 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 an engineer’s statement as to whether the VIMS was installed in accordance
with the DEQ approved VIMP and is fully protective of public health as defined in Section 1.0,
and as evidenced by the VIMS inspections performed by the engineer or engineer’s designee,
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 pending Notice of Brownfields Property agreement for the Site is anticipated to include 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 compliance
approval with submittal of a data summary in lieu of the full VIMS Installation Completion
Report based on timing of the proposed building occupancy date and report review times.

After each additional post-construction sub-slab vapor 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
DILWORTH AUTO BROWNFIELDS PROPERTY120 EAST KINGSTON AVENUE AND1700-1728 SOUTH BOULEVARDCHARLOTTE, NORTH CAROLINA
DATE: 12-10-20
JOB NO: WPP-011
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
PROJECT02,000 4,000
SCALE IN FEET
Path: \\HHFS01\Redirectedfolders\sperry\My Documents\ArcGIS\PROJECTS\WPP-011\Figure 1.mxdN
U.S.G.S. QUADRANGLE MAP
CHARLOTTE EAST, NORTH CAROLINA 2013
QUADRANGLE
7.5 MINUTE SERIES (TOPOGRAPHIC)
SITE
REVISION NO. 0
JOB NO. WPP-011
DATE: 11-1-21
FIGURE NO. 2
DILWORTH AUTO SERVICESOUTH BOULEVARD & EAST KINGSTONCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 24051-20-060
SITE MAP
LEGEND
SITE PROPERTY BOUNDARY
PARCEL BOUNDARY
LIGHT RAIL
PROPOSED BUILDING FOOTPRINT (LEVEL 1)
PROPOSED FUTURE BUILDING FOOTPRINT(SEPARATE DEPLOYMENT)
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
NOTES:
1.AERIAL IMAGERY AND PARCEL DATA OBTAINED FROMMECKLENBURG COUNTY GIS (2021).
2.SITE DEVELOPMENT PLAN PROVIDED BY R2LARCHITECTS, DATED 9/10/21.
DRIVE-THROUGH
WALGREENS
LEASING ANDAMENITY
RETAIL
FUTURE OFFICEBUILDING
FUTURE OFFICEBUILDING
PARKING DECKENTRANCE
SOUTH B
OULEVA
RDCAMDEN ROADE.

K
I
NG
S
T
O
N

A
V
E
N
U
E
E
A
S
T

B
O
U
L
E
V
A
R
D
S:\AAA-Master Projects\White Point Partners (WPP)\WPP-011 Dilworth Auto Service\VIMP\Figures\Site Map.dwg, FIG 2, 10/31/2021 10:13:13 PM, SVincent

Attachment A

Vapor Intrusion Assessment Data Summary (Excerpts)
Table 3Summary of Groundwater Analytical ResultsDilworth Auto Brownfields Property1700-1728 South Blvd. and 120 E. Kingston Ave.Charlotte, North CarolinaH&H Job No. WPP-011Sample IDTMW-2 TMW-3 TMW-4 TMW-5 TMW-6 TMW-7Date11/18/2020 11/18/2020 11/18/2020 11/17/2020 11/17/2020 11/17/2020 11/18/2020 11/18/2020Location DescriptionFormer Automotive Repair ShopHeating Oil USTFormer Automotive Repair ShopFormer Lumber FacilityFormer Dry CleanerDowngradient of Adjacent Gas Station VOCs by EPA Method 8260DAcetone 300 J 320 J<0.31 <0.31 <0.31 <0.31 <0.313.7 J 6,000Benzene29,000 30,000 23<0.048 <0.048 <0.048 <0.0487.81.0Chloroform<7.6 <7.6 <0.076 <0.0761.4 0.76<0.0762.6 70Cyclohexane 160 160<0.95 <0.95 <0.95 <0.95 <0.95 <0.95NS1,2-Dichloroethane88 89<0.066 <0.066 <0.066 <0.066 <0.066 <0.0660.401,1-Dichloroethylene<8.3 <8.3 <0.083 <0.083 <0.0830.57<0.083 <0.083350Ethylbenzene2,900 3,0007.0<0.061 <0.061 <0.061 <0.061 <0.061600Isopropylbenzene (Cumene)110 1100.35 J<0.054 <0.054 <0.054 <0.054 <0.05470Methocyclohexane 150 J 160 J<0.94 <0.94 <0.94 <0.94 <0.94 <0.94NSMethyl Acetate 1,300 1,300<1.0 <1.0 <1.0 <1.0 <1.0 <1.0NSMethyl Butyl Ketone (2-Hexanone)220 J 220 J<0.065 <0.065 <0.065 <0.065 <0.065 <0.06540 (2)Methyl Ethyl Ketone (2-Butanone) 440 J 500<0.24 <0.24 <0.24 <0.24 <0.24 <0.244,000Methyl Isobutyl Ketone150 J 150 J<1.0 <1.0 <1.0 <1.0 <1.0 <1.0100 (2)Methyl-tert-Butyl Ether1,400 1,400<0.042 <0.042 <0.0420.25 J<0.0420.37 J 20Naphthalene450 4400.69 J<0.30 <0.30 <0.30 <0.30 <0.306.0Tetrachloroethylene<9.8 <9.8 <0.098 <0.098 <0.0980.74<0.098 <0.0980.70Toluene32,000 34,00073 0.33 J 0.59<0.044 <0.0440.65 600Trichloroethylene<7.8 <7.8 <0.078 <0.078 <0.0782.0<0.0780.27 J 3.0m,p-Xylenes9,100 9,40022<0.12 <0.12 <0.12 <0.12 <0.12500o-Xylene4,300 4,50010<0.044 <0.044 <0.044 <0.044 <0.044500Xylenes, total13,000 14,00032<0.15 <0.15 <0.15 <0.15 <0.15500SVOCS by EPA Method 8270EAcetophenone<3.543<3.5 <3.6 <3.4 <3.5 <3.5 <3.57002-Methylnaphthalene74 55<1.3 <1.3 <1.2 <1.2 <1.3 <1.3303/4-Methylphenol 7.8 J 6.0 J<2.6 <2.6 <2.5 <2.6 <2.6 <2.6NSNaphthalene280 170<1.4 <1.3 <1.3 <1.3 <1.3 <0.306.0RCRA Metals by EPA Method 6020B/7470AArsenic<0.17 <0.170.18 J 0.40 J 0.24 J<0.17 <0.17 <0.1710Barium 570 670 120 170 290 44 67 91 700Cadmium 0.22 J 0.20 J<0.160.22 J<0.16 <0.16 <0.16 <0.162.0Chromium<0.79 <0.791.2 J<0.79 <0.791.3 J 6.7<0.7910Lead 0.27 J<0.261.4 0.74 J 1.1 0.58 J<0.261.5 15Mercury<0.034 <0.034 <0.034 <0.034 <0.034 <0.034 <0.034 <0.0341.0Selenium 1.2 J 1.1 J 1.1 J 2.3 J 1.6 J 1.8 J<0.74 <0.7420Silver<0.11 <0.11 <0.11 <0.11 <0.11 <0.11 <0.11 <0.1120Notes:2) A 2L Standard has not been established; therefore, the Interim Maximum Allowable Concentration (IMAC) is shown.Bold values exceed the DEQ 2L Standard or IMAC.Compound concentrations are reported to the laboratory detection limits.Compound concentrations are reported in micrograms per liter (µg/L).With the exception of metals, only constituents detected in at least one sample are shown.VOCs = Volatile Organic Compounds; SVOCs = Semi-VOCs; RCRA = Resource Conservation and Recovery ActJ = estimated concentration between the laboratory method detection limit and the laboratory reporting limitNS = Not Specified; UST = underground storage tank2L Standards(1)1) North Carolina Department of Environmental Quality (DEQ) 15A NCAC 02L.0202 Groundwater Standards (2L Standards) (April 2013)TMW-1/TMW-DupFormer Gasoline USTsS:\AAA-Master Projects\White Point Partners (WPP)\WPP-011 Dilworth Auto Service Phase II ESA & Brownfields\Tables\Data Tables 12302020.xlsm1/24/2021Table 3 Hart & Hickman, PC
Table 4Summary of Soil Gas Analytical ResultsDilworth Auto Brownfields Property1700-1728 South Blvd. and 120 E. Kingston Ave.Charlotte, North CarolinaH&H Job No. WPP-011Sample IDSG-1 SG-2 SG-4 SG-5 SG-6 SG-7 SG-8 SG-9 SG-10 SG-11Location DescriptionFormer Lumber FacilityDate11/20/20 11/20/20 11/20/2011/20/20 11/20/20 11/20/2011/20/20 11/22/20 11/22/2011/22/20 11/22/20 11/20/20VOCs by EPA Method TO-15Acetone 14 12<12 <1214 J 9.8 24 13 20 18 25 400 220,000 2,700,000Benzene 5.5 1.6 J<3.2 <3.221 J 27 27 9.8 6.3 4.3 9.1 2.9 120 1,600Bromomethane<0.32 <0.64 <6.4 <6.4 <6.4 <0.645.0<0.32 <0.32 <0.32 <0.32 <0.3235 440Carbon disulfide 37 4.1 J<31 <3178 J 93 6.0 J 88 J 12 15 12 20 4,900 61,000Chloroform 8.8 4.6 J<5.2 <5.244 J2.7 J 5.6 3.0 5.5<0.26 <0.2612 41 530Chloromethane<0.267.0<5.3 <5.3 <5.3 <0.53 <0.26 <0.26 <0.26 <0.26 <0.26 <0.26630 7,900Cyclohexane 3.9 4.0 J 4,000 4,600<1716 35 12 21 34 520<0.8742,000 530,000Dichlorodifluoromethane 2.5 3.8 J<8.2 <8.2 <8.23.1 J 4.3 3.0 3.3 3.4 6.5 4.7 700 8,800Ethyl Acetate<0.25 <0.50 <50 <50 <50 <0.50 <0.25 <0.251.9<0.25 <0.254.7 490 6,100Ethylbenzene 65 5.2<3.8 <3.8 <3.89.7 4.7 13 2.5 9.0 10 32 370 4,9004-Ethyltoluene 38<0.53 <5.3 <5.3 <5.3 <0.53 <0.261.2 J<0.261.3 J 4.5 33 NS NSHeptane 49 6.1 850 920 71 200 130 100 16 96 180 15 2,800 35,000Hexane 7.7 4.9 4,5005,00075 84 120 29 22 100 480 19 4,900 61,000Isopropyl alcohol 6.3 7.0 J<3.3 <3.3 <3.318 18 13 20 15<0.17 <0.171,400 18,000Methyl Butyl Ketone (2-Hexanone)<0.26 <0.51 <5.1 <5.1 <5.1 <0.51 <0.26 <0.26 <0.2610<0.26 <0.26210 2,600Methyl Ethyl Ketone (2-Butanone) 2.7 3.7<60 <60 <605.7 11 4.9 7.9 3.7 15 52 35,000 440,000Methyl Isobutyl Ketone<0.26 <0.51 <5.1 <5.1 <5.1 <0.51 <0.261.3 J<0.26 <0.26 <0.2620 21,000 260,000Methylene Chloride 2.5 4.3<7.7 <7.7 <7.73.5 3.2 3.8 3.3 4.3 6.9 2.4 4,200 53,000Naphthalene 3.0<2.1 <21 <21 <21 <2.1 <101.5 J<1.01.3 J 1.4 J 6.6 21 260Propylene<0.14 <0.28150 160 890 540 310 140 270 130 70<0.1421,000 260,000Tetrachloroethylene 74 14<8.8 <8.8 <8.813 13 26 21 5.2 5.2 72 280 3,500Tetrahydrofuran<0.21 <0.42 <4.2 <4.2 <4.2 <0.42 <0.21 <0.21 <0.21 <0.21 <0.2115 14,000 180,000Toluene 250 57<15 <15120 270 210 240 95 150 62 82 35,000 440,000Trichlorofluoromethane 2.2 J<0.87 <8.7 <8.7 <8.7 <0.87 <0.431.7 J 1.9 J<0.437.5 5.6 NS NS1,2,4-Trimethylbenzene 84<0.59 <5.9 <5.9 <5.92.1 J<0.292.4 J 1.0 J 3.9 67 83 420 5,3001,3,5-Trimethylbenzene 35<0.52 <5.2 <5.2 <5.2 <0.52 <0.261.0 J<0.261.5 J 83 32 420 5,300o-Xylene 74 4.2 J<3.7 <3.7 <3.76.4 3.4 8.6 1.8 J 8.5 64 52 700 8,800m,p-Xylenes 270 21<7.7 <7.723 J 36 16 47 6.9 43 46 180 700 8,800Notes:1) North Carolina Department of Environment Quality (DEQ) Division of Waste Management (DWM) Residential Sub-slab and Exterior Soil Gas Screening Levels (SGSLs) (February 2018)2) North Carlolina DEQ DWM Non-Residential SGSLs (February 2018)Bold values exceeds the NCDEQ DWM Residential SGSL.Compound concentrations are reported to the laboratory detection limits.Only constituents detected in at least one sample are shown.Compound concentrations are reported in micrograms per cubic meter (μg/m3).VOCs = Volatile Organic Compounds ; TCR = Target Cancer Risk; TQR = Target Hazard Quotient; NS = Not SpecifiedJ = estimated concentration between the laboratory method detection limit and the laboratory reporting limitProposed Central Commercial Building Residential SGSLs (1) (TCR=1e-5; THQ=0.2)Non-Residential (2) SGSLs (TCR=1e-5; THQ=0.2)SG-3 / SG-Dup-11/20/20Proposed Southwestern Commercial Building Proposed Southern Commercial BuildingProposed Southeastern Commercial BuildingProposed Northeastern Residential BuildingS:\AAA-Master Projects\White Point Partners (WPP)\WPP-011 Dilworth Auto Service Phase II ESA & Brownfields\Tables\Data Tables 12302020.xlsm1/6/2021Table 4 Hart & Hickman, PC
Table 5Summary of Methane Screening Results Dilworth Auto Brownfields Property1700-1728 South Blvd. and120 E. Kingston Ave.Charlotte, North CarolinaH&H Job No. WPP-01111/19/2020 11:57 0.0 0.0 2.0 17.4 0.0 0.0 29.66 0.07 0.00211/20/2020 16:28 0.0 0.0 1.9 17.8 0.0 0.0 29.49 -0.03 -0.00111/19/2020 12:00 0.0 0.0 7.7 12.5 0.0 0.0 29.66 0.57 -0.48311/20/2020 16:32 0.0 0.0 8.1 8.7 0.0 0.0 29.50 0.54 -0.51211/19/2020 12:04 0.6 12.0 6.8 0.6 1.0* 0.0 29.67 0.07 -0.00611/20/2020 16:36 0.8 16.0 7.2 0.3 0.0 0.0 29.51 0.0 -0.00511/19/2020 12:07 0.0 0.0 5.9 9.6 3.0* 0.0 29.70 0.07 -0.04711/20/2020 16:40 0.0 0.0 5.4 9.8 1.0* 0.0 29.50 0.01 -0.02211/19/2020 11:44 0.0 0.0 5.8 8.7 2.0* 0.0 29.64 0.05 -0.01711/20/2020 16:46 0.0 0.0 6.4 9.0 2.0* 0.0 29.51 0.07 -0.01211/19/2020 11:40 0.0 0.0 5.0 12.9 0.0 0.0 29.63 0.12 -0.12111/20/2020 16:49 0.0 0.0 5.0 11.6 0.0 0.0 29.51 0.19 -0.18811/20/2020 16:57 0.0 0.0 1.8 18.4 0.0 0.0 29.52 0.05 0.00511/22/2020 11:14 0.0 0.0 7.0 8.2 2.0* 0.0 29.39 0.0 -0.0111/20/2020 16:55 0.0 0.0 1.3 19.9 1.0* 0.0 29.52 0.01 0.00311/22/2020 10:59 0.0 0.0 5.2 11.0 0.0 0.0 29.39 0.05 -0.10611/20/2020 16:52 0.0 0.0 1.1 20.7 0.0 0.0 29.52 0.01 0.00311/22/2020 10:31 0.0 0.0 2.5 18.4 5.0* 0.0 29.39 0.01 -0.00211/20/2020 16:20 0.0 0.0 1.4 19.9 0.0 0.0 29.51 0.05 0.00511/22/2020 16:20 0.0 0.0 0.2 21.1 0.0 0.0 29.37 -0.04 -0.00211/19/2020 11:53 0.0 0.0 2.9 9.1 0.0 0.0 29.65 0.05 0.00411/20/2020 16:24 0.0 0.0 3.2 9.6 0.0 0.0 29.49 -0.04 -0.003Notes:*Values fall within instrument accuracy range of ±20 PPM CONorth Carolina Department of Environmental Quality (DEQ) Solid Waste Section rules provide methane concentrations of 1.25% by volume as threshold for building on landfill sitesCH4 = Methane; LEL= Lower Explosive Limit; CO2= Carbon Dioxide; O2= OxygenH2S=Hydrogen Sulfide; in H₂O=Inches of WaterPPM = Parts per Millionft bgs = feet below ground surfaceCH4 (% by volume)Static Pressure (in. H₂O)Differential Pressure (in. H₂O)CH4 (% LEL)CO2 (%)O2 (%)CO (PPM)H2S (PPM)Barometric Pressure (in. Hg)Sample TimeSG-11SG-10SG-9SG-8SG-7SG-6SG-5SG-4Sample IDLocation DescriptionSample Depth Sample DateSG-1 Proposed Southwestern Commercial Building Proposed Southern Commercial BuildingSG-3SG-2 Proposed Southeastern Commercial Building7 ft bgsProposed Northeastern Residential Building Proposed Central Commercial Building Former Lumber FacilityS:\AAA‐Master Projects\White Point Partners (WPP)\WPP‐011 Dilworth Auto Service Phase II ESA & Brownfields\Tables\Methane Results.xlsx1/6/2021Table 5Hart & Hickman, PC
Table 2Summary of Soil Gas Analytical DataDilworth Auto ServiceCharlotte, North CarolinaH&H Job No. WPP-011Sample ID SG-12 SG-13Date 8/2/21 8/2/21Sample Location Former UST Basin Former Dispenser IslandsUnitsVOCs (TO-15)Benzene96 4,4001,3001,40012 1602-Butanone (MEK)<2.0 <150180 J<15035,000 440,000Chloromethane<0.32 <2455 J<24630 7,900Cyclohexane160 8,100 3,400 4,00042,000 530,000Dichlorodifluoromethane (Freon 12)<0.31 <2390<23700 8,8001,2-Dichloroethane<0.30 <2291953.6 47Ethanol18<3402,200<340NE NEEthylbenzene130 44,00011,00013,00037 4904-Ethyltoluene34 10,000 6,800 8,100NE NEHeptane17028,000 25,000 28,0002,800 35,000Hexane27029,000 17,000 20,0004,900 61,000Isopropanol<4.5 <340410 J<3401,400 18,000Methylene Chloride<1.6 <120430 J<1203,400 53,000Naphthalene<0.592,7005103902.8 36Propene<1.2 <87160 J 130 J21,000 260,000Styrene<0.2423 J 31 J 27 J7,000 88,000Tetrachloroethene50 87 J 100 J 110280 3,500Toluene1,000 5,300 12,000 14,00035,000 440,0001,2,4-Trimethylbenzene11034,00022,00026,000420 5,3001,3,5-Trimethylbenzene328,5007,6009,200420 5,300m&p-Xylene47025,00040,00048,000700 8,800o-Xylene1702,600 14,00016,000700 8,800Notes:1) North Carolina Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Vapor Intrusion Sub-slab and Exterior Soil Gas Screening Levels (SGSLs) (June 2021)Bold values exceed the DEQ DWM Residential SGSL.Underlined values exceed the DEQ DWM Non-Residential SGSL.Compound concentrations are reported in micrograms per cubic meter (μg/m3)Compound concentrations are reported to the laboratory method detection limitsOnly those compounds detected in at least one sample are shown in the table aboveLaboratory analytical method is shown in parentheses.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 concentrationµg/m3Non-ResidentialSGSLs (1)SG-14/SG-Dup8/2/21ResidentialSGSLs (1)Former Gas Stationhttps://harthick.sharepoint.com/sites/MasterFiles‐1/Shared Documents/AAA‐Master Projects/White Point Partners (WPP)/WPP‐011 Dilworth Auto Service Phase II ESA & Brownfields/Brownfields Assessment/Tables/Dilworth Auto Data Tables_CES9/1/2021Table 2 (Page 1 of 1)Hart & Hickman, PC
SG-7
SG-8
SG-1
SG-2
SG-4
SG-5
SG-6
SG-9SG-11
SG-10
SG-3
SB-2
SB-1/TMW-1
SB-3SB-6/TMW-2SB-9
SB-14/TMW-4
SB-12
SB-13
TMW-7
SB-11
SB-5
SB-4
SB-7/TMW-3
SB-8
SB-10
SB-15/TMW-5
SB-16/TMW-6
SB-17
REVISION NO. 0
JOB NO. WPP-011
DATE: 8-24-21
FIGURE NO. 2
DILWORTH AUTO SERVICE
120 EAST KINGSTON AVE., 1700-1728 SOUTH
BOULEVARD, AND 101-115 EAST BOULEVARDCHARLOTTE, NORTH CAROLINA
SAMPLE LOCATION MAP
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
E
A
S
T

K
I
NG
S
T
O
N

A
V
E
N
U
E
WALGREENS(1728 SOUTH BOULEVARD)
ESSEXRICHARDS(1701 SOUTH BOULEVARD)
NOTES:
1.PARCEL BOUNDARY DATA AND AERIAL IMAGERYOBTAINED FROM MECKLENBURG COUNTY GIS, 2020.
2.FORMER TANK BASIN AND DISPENSER ISLANDLOCATIONS AT 1700 SOUTH BOULEVARD OBTAINEDFROM BUXTON ENVIRONMENTAL, INC. FIGURE 2 SITELAYOUT MAP.
3.FORMER UST LOCATIONS AT 1728 SOUTH BOULEVARDOBTAINED FROM MOUNTAIN ENVIRONMENTAL
SERVICES, INC. CLOSURE REPORT DATED MAY 3, 1999AND GEO-ENVIRONMENTAL CONSULTANTS, INC. USTCLOSURE REPORT DATED AUGUST 19, 1999.
4.UST = UNDERGROUND STORAGE TANK
FORMERTANK BASIN
FORMERDISPENSERISLANDS
FORMER GAS STATIONBUILDING(1951 & 1953SANBORN MAPS)
FORMER TIRE SHOP(1940s & 1950s)
GASOLINE USTs(1951 & 1953SANBORN MAPS)
E
A
S
T

B
O
U
L
E
V
A
R
D
SOUT
H B
OUL
EVAR
DCAMDEN ROAD
ROSEMONT(1714 SOUTH BOULEVARD)
FORMER DRY CLEANER(113/115 EAST BOULEVARD)
PARKINGAREA
VACANT LAND(FORMERLY 1700 SOUTH BOULEVARD)
VACANT COMMERCIALBUILDING(1708 SOUTHBOULEVARD)
VACANT COMMERCIALBUILDING
(120 EAST KINGSTON AVENUE)
FORMER FILLING STATION
(1929 & 1953 SANBORN MAPS)
FORMER AUTO REPAIR SHOP(1969 SANBORN MAP)
FORMER VEHICLESERVICE PIT
SG-12
SG-13SG-14SB-18
SB-14A
LEGEND
BROWNFIELDS SITE PROPERTY BOUNDARY
PARCEL BOUNDARY LINE
RAILROAD
APPROXIMATE EXTENT OF BASEMENT
HEATING OIL UST
NEW/USED OIL UST
FORMER NEW/USED OIL UST
FORMER GASOLINE UST
FORMER HEATING OIL UST
SOIL SAMPLE LOCATION
GROUNDWATER SAMPLE LOCATION
SOIL AND GROUNDWATER SAMPLELOCATION
EXTERIOR SOIL GAS SAMPLE LOCATION
SB-19
S:\AAA-Master Projects\White Point Partners (WPP)\WPP-011 Dilworth Auto Service Phase II ESA & Brownfields\Brownfields Assessment\Figures\WPP.011_20210824.dwg, FIG.2, 8/31/2021 3:27:08 PM, shaynes

Attachment B

Vapor Intrusion Mitigation Plan
Sheets VM-1, VM-1A, VM-1B, VM-2, VM-2A and VM-3
WATER
SERVICES ROOM
MAINTENANCE
OFFICE /
DOCK
MANAGER
RETAIL 3
4,332 SF
RETAIL 2
4,690 SF RETAIL 1
5,710 SF
BIKE
STORAGE
MAIN
MDF
GENERATOR
ROOM
MAIN ELECTRICAL
ROOM
FIRE
PUMP
RETAIL
TRASH
RESIDENTIAL TRASH
& RECYCLING
PACKAGE
ROOM
MAIL ROOM
LEASING BOH
IDF / MDF / AV
/ SECURITY
FIRE CONTROL
ROOM
LOADING AREA
BOH CORRIDOR
RETAIL ELECTRICAL
UP
UP
DN
DNDN
UP
DN
LOW HEAD ROOM
APP. 12' TO BOTTOM OF SLAB
ABOVE EAST KINGSTON AVE.SOUTH BOULEVARDPEDESTRIAN ALLEYTWO-WAY STREET
MONUMENT SIGN
116
127
145
121
132
143
152
102
163
103
154
137
147 148
139
117
158
169
109
130
160
170
161
165 166 167
104
114
125
105
115
126124
110
171
119
157
144
112
118
159
123
133
134
100
122
153
149
106
128
140
P1
P1
150
113
120
131
141
151
107
136 172 173
138
162
142
168
135
164
108
E-C1
E-2
E-A1
E-1
E-3
E-B1
E-C2
MP-C1
MP-C2
MP-A1
MP-2
MP-B1
MP-3
MP-1
TMP-B2 TMP-A2
TMP-1
TMP-3
TMP-C4
MP-4
MP-5
MP-6
MP-8
MP-7
MP-C3
H&H NO. WPP-011
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 1ASCENT SOUTH ENDSOUTH BOULEVARD & EAST KINGSTONCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 24051-20-060VM-1
PROFESSIONAL
APPROVAL
REVISIONS
REV DATE DESCRIPTION
0 11/01/21 DEQ SUBMISSION
1 01/12/22 DEQ SUBMISSION REV 1
LEGEND
SLAB GRADE CHANGE
THICKENED SLAB OR FOOTER - SEE STRUCTURAL PLANS
COLUMN AND FOOTING
OUTDOOR OR OPEN AIR SPACE
EXTENT OF 8" SLAB - SEE STRUCTURAL PLANS
EXTENT OF VAPOR LINER
HORIZONTAL COLLECTION PIPING OR SOIL GAS COLLECTOR MAT
3" DIA SCH 40 SOLID PVC PIPE
4" DIA METAL VERTICAL RISER WITH EXHAUST IDENTIFICATION NUMBER
2" DIA SOLID PVC PRESSURE MONITORING POINT WITH FLUSH-MOUNTED COVER
(POSITION INTAKE MINIMUM 5-FT FROM EXTERIOR FOOTING)
TEMPORARY MONITORING POINT (SEE DETAIL 28 AND SPECIFICATION #7)
(POSITION INTAKE MINIMUM 5-FT FROM EXTERIOR FOOTING)
MP-1
DEVELOPER:
GREYSTAR
1545 PEACHTREE STREET NE
ATLANTA, GEORGIA
1
VM-2
90-DEGREE
ELBOW, TYP
PVC TEE
FITTING, TYP
E-2
27
VM-2A
2
VM-2
9
VM-2
7
VM-2
14
VM-2
14
VM-2
15
VM-2
22
VM-2A
24
VM-2A
3/27
VM-2/2A
24
VM-2A
17
VM-2A
18
VM-2A
4/27
VM-2/2A
3/27
VM-2/2A
3/27
VM-2/2A
3/27
VM-2/2A
3/27
VM-2/2A
6B
VM-2
11
VM-2
8
VM-2
7
VM-2
7
VM-2
11
VM-2
11
VM-2
DATE: 1-12-22
14
VM-2
11
VM-2
13
VM-2
20
VM-2A
20
VM-2A
PVC TEE
FITTING, TYP
90-DEGREE
ELBOW, TYP
2
VM-2
26
VM-2A
1
VM-2
PVC TEE
FITTING, TYP
01/12/22
TMP-A2
28
VM-2A
28
VM-2A
24
VM-2A
24
VM-2A
29
VM-2A
14
VM-2
6A
VM-2
6A
VM-2
6A
VM-2
6B
VM-2
S:\AAA-Master Projects\White Point Partners (WPP)\WPP-011 Dilworth Auto Service\VIMP\Figures\VIMP Design_R1.dwg, 1/13/2022 10:07:31 AM, DWG To PDF.pc3
E-C1
E-2
E-A1
E-1
E-3
E-B1
E-C2
H&H NO. WPP-011
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 3 - 4ASCENT SOUTH ENDSOUTH BOULEVARD & EAST KINGSTONCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 24051-20-060VM-1A
PROFESSIONAL
APPROVAL
LEGEND
4" DIA SOLID METAL PIPE - CEILING SUPPORTED IN LEVEL 1 OR 2
4" DIA SOLID METAL PIPE - FLOOR SUPPORTED IN LEVEL 2 OR 3
4" DIA METAL VERTICAL RISER WITH EXHAUST IDENTIFICATION NUMBER
NON-PUBLIC AREA WITH NO PARKING
DEVELOPER:
GREYSTAR
1545 PEACHTREE STREET NE
ATLANTA, GEORGIA
16
VM-2
E-2
POSITION DISCHARGE ON LEVEL 3
MINIMUM 10' FROM AIR INTAKE OR
AREA WITH PUBLIC ACCESS
POSITION DISCHARGE ON
LEVEL 3 MINIMUM 10' FROM AIR
INTAKE OR AREA WITH PUBLIC
ACCESS
POSITION DISCHARGE ON LEVEL 3
MINIMUM 10' FROM AIR INTAKE OR
AREA WITH PUBLIC ACCESS
POSITION DISCHARGE ON
LEVEL 3 MINIMUM 10' FROM AIR
INTAKE OR AREA WITH PUBLIC
ACCESS
27
VM-2A
27
VM-2A
INSTALL ELECTRICAL OUTLETS WITHIN
5' OF RISER ON LEVEL 4 FOR
POTENTIAL FUTURE ELECTRIC FAN
INSTALL ELECTRICAL OUTLET WITHIN
5' OF RISER ON LEVEL 3 FOR
POTENTIAL FUTURE ELECTRIC FAN
INSTALL ELECTRICAL OUTLET WITHIN
5' OF RISER ON LEVEL 3 FOR
POTENTIAL FUTURE ELECTRIC FAN
INSTALL ELECTRICAL OUTLET WITHIN
5' OF RISER ON LEVEL 3 FOR
POTENTIAL FUTURE ELECTRIC FAN
PIPE INSTALLED ALONG
CEILING OF LEVEL 3
PIPE INSTALLED ALONG
CEILING OF LEVEL 2
PIPE INSTALLED ALONG
CEILING OF LEVEL 2
PIPE INSTALLED ALONG
CEILING OF LEVEL 2
PIPE INSTALLED ALONG
CEILING OF LEVEL 3
LONG RADIUS 90-DEGREE
ELBOW, TYP.
45-DEGREE ELBOW, TYP.
45-DEGREE
ELBOW, TYP.
DATE: 1-12-22
16
VM-2
16
VM-2
16
VM-2
01/12/22
45-DEGREE ELBOW, TYP.
REVISIONS
REV DATE DESCRIPTION
0 11/01/21 DEQ SUBMISSION
1 01/12/22 DEQ SUBMISSION REV 1
POSITION PIPE PENETRATION
THROUGH LEVEL 3 MINIMUM
2-FT FROM TRANSFER GIRDER
LONG RADIUS 90-DEGREE
ELBOW, TYP.
LONG RADIUS 90-DEGREE
ELBOW, TYP.
AVOID SHEAR RAILS FOR
PIPE PENETRATION. SEE
STRUCTURAL DRAWINGS.
16
VM-2
45-DEGREE
ELBOW, TYP.S:\AAA-Master Projects\White Point Partners (WPP)\WPP-011 Dilworth Auto Service\VIMP\Figures\VIMP Design_R1.dwg, 1/13/2022 10:08:07 AM, DWG To PDF.pc3
BASE COURSE - CLEAN #57 STONE
MIN 5" THICK BENEATH VAPOR BARRIER (SEE
SPECIFICATION #2 & #3)
VAPOR BARRIER (SEE SPECIFICATION #2)
CONCRETE FLOOR SLAB
SUBBASE
VAPOR BARRIER AND BASE COURSE (TYPICAL)1
NTSVM-2
3" SCH 40 THREADED FLUSH JOINT
SLOTTED PVC PIPE SET WITHIN MIN 5"
BASE COURSE (SEE SPECIFICATION #3)
VAPOR BARRIER (SEE SPECIFICATION #2)
SUBBASE
CONCRETE FLOOR SLAB
SLOTTED COLLECTION PIPE (TYPICAL)2
NTSVM-2
PVC ENDCAP - DRILL
APPROX. 3 - 1/4" HOLES
VIMS AT VERTICAL RISERS WITH 90 DEGREE ELBOW (TYP)
NTS
3
VM-2
BASE COURSE
SUB-BASE
SLOTTED 3" SCH 40 PVC
VAPOR LINER SEALED TO PIPE PER
MANUFACTURER INSTRUCTIONS
VAPOR LINER
4" DIA METAL RISER DUCT PIPE
(SEE SPECIFICATION #4, #5 & #6)
WALL OR COLUMN (VARIES)
4" SCH 40 PVC
90-DEGREE ELBOW4" TO 3" SCH 40
PVC REDUCER
AIR-TIGHT 4" DIA PVC TO METAL
TRANSITION COUPLING
SUPPORT PIPE AS NECESSARY
CONCRETE
FLOOR SLAB
BASE COURSE
SUB-BASE
VIMS PIPING THROUGH THICKENED SLAB (TYP)
NTS
7
VM-2
SOLID 3"
SCH 40 PVC
VAPOR LINER SEALED TO PIPE PER
MANUFACTURER INSTRUCTIONS
PROVIDE PIPE SUPPORT TO PREVENT
LOW POINT IN SOLID PIPE. MAINTAIN 1%
SLOPE TOWARD SLOTTED SECTION OF
PIPE (SEE SPECIFICATION #2)
VAPOR LINER
SOLID TO SLOTTED 3" SCH 40
PVC PIPE TRANSITION (SLIP
COUPLING OR THREADED JOINT)
VAPOR LINER BENEATH
GRADE BEAM
WALL (VARIES)
PIPE SLEEVE
3" SCH 40 PVC PIPE
(IF PRESENT)
VIMS AT SLAB THICKENING WITH PIPE (TYP)
NTS
10
VM-2
BASE COURSE
WALL (VARIES)
SUBBASE
VAPOR LINER
3" SCH 40 PVC
45-DEGREE ELBOW
3" SCH 40 SLOTTED PVC PIPE
VIMS AT VERTICAL RISER (OPTIONAL SUB-SLAB COLLECTION PIPE)
NTS
5
VM-2
BRICK OR HOUSE SIDING
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 (ONE 0.5"
DIAMETER HOLE DRILLED IN BOTTOM FOR MOISTURE DRAINAGE)
4" DIA PVC TO METAL
TRANSITION COUPLING
VIMS VAPOR LINER AT INTERIOR THICKENED SLAB (TYP)
NTS
6A
VM-2
CONCRETE
FLOOR SLAB
BASE COURSE
VAPOR LINER
SUB-BASE
WALL (VARIES)
SLP.
VIMS AT RAMP (TYP)
NTS
13
VM-2
VAPOR LINERCONCRETE FLOOR SLAB
SUB-BASE
SLOTTED 3" SCH 40
PIPE (IF PRESENT)BASE COURSE
VAPOR BARRIER
BENEATH THICKENED SLAB
VAPOR BARRIER AT STAIR THICKENED SLAB8
NTS
STAIR STRINGER
SUBBASE
BASE COURSE
VM-2
CONCRETE FLOOR
SLABVAPOR LINER
OPEN AIR SPACE
OCCUPIED SPACE
VIMS AT PARKING DECK RAMP ADJACENT TO OCCUPIED SPACE (TYP)
NTS
15
VM-2
SUB-BASE
BASE COURSE
VAPOR LINER
VAPOR LINER SEALED TO OUTSIDE OF CONCRETE
AND WATERPROOFING MEMBRANE (WHERE
PRESENT) PER MANUFACTURER INSTRUCTIONS
(SEE DETAIL 22/VM-2A)
WATERPROOFING AND RIGID
INSULATION (IF PRESENT)
DRAIN
CONCRETE
RAMP SLAB
SLP.
SLP.
VIMS AT EXTERIOR FOOTING (TYP)
NTSVM-2
11
CONCRETE FLOOR SLAB
VAPOR LINER SEALED TO CONCRETE
PER MANUFACTURERS INSTRUCTIONS
VAPOR LINER
BASE COURSE
SUB-BASE
WALL (VARIES)
EXTERIOR GRADE
(VARIES)
VAPOR LINER EXTENDED TO EXTERIOR SIDE
OF FOOTER NO MORE THAN 6-INCHES BELOW
FINISHED GRADE WHERE POSSIBLE
TERMINATE LINER
BELOW EXTERIOR
FINISHED GRADE
INTERIOR
VIMS AT EXTERIOR FOOTING WITH CURB (TYP)
NTSVM-2
12
CONCRETE FLOOR SLAB
VAPOR LINER SEALED TO CONCRETE
PER MANUFACTURERS INSTRUCTIONS
VAPOR LINER
BASE COURSE
SUB-BASE
CONCRETE CURB
VAPOR LINER EXTENDED TO EXTERIOR SIDE OF
FOOTER, IF POSSIBLE, BASED ON CONSTRUCTION
SEQUENCE. ENGINEER WILL APPROVE FINAL VAPOR
LINER TERMINATION POINT DURING CONSTRUCTION
EXTERIOR GRADE
(VARIES)
4" DIA METAL PIPE (VARIES)
PIPE HANGER
SUPPORT TO CEILING
PIPE SUPPORT
(SPLIT-RING HANGER, OR SIMILAR)
PIPE SUPPORT IN GARAGE (TYP)16
NTSVM-2
AIR-TIGHT COUPLINGS REQUIRED
FOR PIPE CONNECTIONS DURING
EXPOSED-PIPE LENGTHS
VIMS AT DEPRESSIONS IN SLAB-ON-GRADE (TYP)
NTS
9
VM-2
BASE COURSE
VAPOR LINER
WALL (VARIES)
SUBBASE
VIMS AT VERTICAL RISERS WITH SLAB THICKENING (TYP)
NTS
4
VM-2
BASE COURSE
SUBBASESOLID TO PERFORATED 3" SCH
40 PVC PIPE TRANSITION (SLIP
COUPLING OR THREADED JOINT)
VAPOR LINER SEALED TO PIPE PER
MANUFACTURER INSTRUCTIONS
4" SCH 40 PVC 90
DEGREE ELBOW
PIPE SLEEVE
(SEE SPECIFICATION #12)
4" TO 3" SCH 40
PVC REDUCER
WALL (VARIES)
4" DIA METAL RISER DUCT PIPE
(SEE SPECIFICATION #4, #5 & #6)
AIR-TIGHT 4" DIA PVC TO METAL TRANSITION COUPLING
SUPPORT PIPE AS NECESSARY
REFER TO STRUCTURAL
DRAWINGS FOR ACCEPTABLE
SLAB PENETRATION LOCATIONS
VIMS VAPOR LINER AT EXTERIOR THICKENED SLAB (TYP)
NTS
14
VM-2
VAPOR LINER
SOIL SUB-BASE. GRAVEL BETWEEN
OPEN-AIR SPACE AND OCCUPIED SPACE
SHALL BE DISCONTINUOUS WITH
MINIMUM 1-FT OF SOIL IN HORIZONTAL
DIRECTION BETWEEN GRAVEL LAYERS
(SEE SPECIFICATION #8)
WALL (VARIES)
OPEN AIROCCUPIED SPACE
VAPOR LINER SEALED TO CONCRETE PER
MANUFACTURERS INSTRUCTIONS (TYP)
MINIMUM 5" THICKENED SLAB THICKNESS
VIMS VAPOR LINER AT INTERIOR NON-LOAD BEARING WALL
NTS
6B
VM-2
8" CONCRETE FLOOR SLAB
(SEE STRUCTURAL PLANS)
BASE COURSE
VAPOR LINER
SUB-BASE
NON-LOADING BEARING
WALL (VARIES)
H&H NO. WPP-011
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 #1-16
VM-2
NOTES:
VIMS = VAPOR INTRUSION MITIGATION SYSTEM
TYP = TYPICAL
SCH = SCHEDULE
PVC = POLYVINYL CHLORIDE
NTS = NOT TO SCALE
ALL PIPE MEASUREMENTS ARE BY DIAMETER
PROFESSIONAL
APPROVALASCENT SOUTH ENDSOUTH BOULEVARD & EAST KINGSTONCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 24051-20-060DEVELOPER:
GREYSTAR
1545 PEACHTREE STREET NE
ATLANTA, GEORGIA
DATE: 1-12-22
01/12/22
REVISIONS
REV DATE DESCRIPTION
0 11/01/21 DEQ SUBMISSION
1 01/12/22 DEQ SUBMISSION REV 1
S:\AAA-Master Projects\White Point Partners (WPP)\WPP-011 Dilworth Auto Service\VIMP\Figures\VIMP Design_R1.dwg, 1/13/2022 10:08:34 AM, DWG To PDF.pc3
FINISHED FLOOR SLAB
2" SCH 40 PVC SET WITHIN GRAVEL LAYER
(SEE DETAIL 14 & 15)
2" DRAIN EXPANSION TEST PLUG
VIMS MONITORING POINT - TYPICAL DETAIL VIEW
NTS
23
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
OPEN-ENDED PIPE
OPEN AIR SPACE
OCCUPIED SPACE
VIMS AT RETAINING WALL ADJACENT TO OCCUPIED SPACE (TYP)
NTS
22
VM-2A
SUB-BASE
BASE COURSE
VAPOR LINER
VAPOR LINER SEALED TO OUTSIDE OF CONCRETE
AND WATERPROOFING MEMBRANE (WHERE
PRESENT) PER MANUFACTURER INSTRUCTIONS
(SEE DETAIL 21/VM-2A)
WATERPROOFING AND RIGID
INSULATION (IF PRESENT -
REFER TO ARCH. PLANS)
DRAIN
WALL (VARIES)
CONCRETE
FLOOR SLAB
20
NTSVM-2A
VIMS AT ELEVATOR PIT (TYP)
CONTINUOUS VAPOR LINER
SEALED PER MANUFACTURER
INSTRUCTIONS
SUMP PIT
SUB-BASE
BASE COURSE
VAPOR LINER
WATERPROOFING MEMBRANE
(IF PRESENT - REFER TO ARCH. PLANS)
(SEE SPECIFICATION #13)
SEE DETAIL 21/VM-2A
VAPOR LINER SEALED TO OUTSIDE OF CONCRETE
AND WATERPROOFING MEMBRANE (WHERE
PRESENT) PER MANUFACTURER INSTRUCTIONS
(SEE DETAIL 21/VM-2A)
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
24
NTSVM-2A
VIMS MONITORING POINT WITH EXTENDED INTAKE PIPE
VAPOR LINER
2" SOLID SCH 40 PVC
LENGTH VARIES - REFER
TO SHEET VM-1
2" SCH 40 PVC 90-DEGREE
ELBOW VAPOR LINER PENETRATION
SEALED TO PIPE PER
MANUFACTURER INSTRUCTIONS
WALL (VARIES)
OPEN-ENDED PIPE
LEVEL 3
LEVEL 2
VIMS EXHAUST AT PLANTER (TYPICAL)27
NTSVM-2A
4" DIA 90-DEGREE METAL
FLANGED ELBOW FLUSH MOUNTED
OPEN-ENDED PIPE
CONCRETE PLANTER
CONCRETE PARKING DECK
PIPE SUPPORT
PER CODE
ELECTRICAL JUNCTION BOX
4" DIA METAL PIPE WITHIN PIPE
SLEEVE PER STRUCTURAL PLANS
4" DIA METAL PIPE WITHIN PIPE
SLEEVE PER STRUCTURAL PLANS
INSTALL FLANGE OR RUBBER COUPLING FOR
POTENTIAL FUTURE ELECTRIC FAN
INSTALLATION IF WARRANTED
21
VM-2A
SOIL SUB-BASE
VAPOR LINER
DRAINAGE MAT
(IF PRESENT)
CONCRETE
NTS
VIMS AT ELEVATOR PIT - WATERPROOFING DETAIL (TYP)
WATERPROOFING MEMBRANE
(IF PRESENT - REFER TO ARCH. PLANS)
(SEE SPECIFICATION #13)
VIMS AT EXTERIOR COLUMN (TYP)
NTS
18
VM-2A
SUB-BASE
CONCRETE
FLOOR SLAB
BASE COURSE
VAPOR LINER
CIP CONCRETE COLUMN
VAPOR LINER SEALED
TO CONCRETE PER
MANUFACTURERS
INSTRUCTIONS
SEE DETAIL 19/VM-2ACOLUMN BLOCKOUT
VAPOR LINER SEALED
TO CONCRETE ON
EACH SIDE OF COLUMN
VIMS AT INTERIOR COLUMN (TYP)
NTS
17
VM-2A
SUB-BASE
CONCRETE FLOOR SLAB
BASE COURSE
VAPOR LINER
CIP CONCRETE COLUMN
CONCRETE FOOTING
VAPOR LINER SEALED OUTSIDE OF
CONCRETE COLUMN PER
MANUFACTURER INSTRUCTIONS
SEE DETAIL 19/VM-2A
VAPOR LINER SEALED
TO CONCRETE ON
EACH SIDE OF COLUMN
VIMS AT COLUMNS - EXPANSION DETAIL (TYP)
NTS
19
VM-2A
CIP CONCRETE COLUMN
CONCRETE FLOOR SLAB
VAPOR LINER SEALED TO CONCRETE
PER MANUFACTURERS INSTRUCTIONS
COLUMN EXPANSION FORM
(INSTALLED OVER VAPOR LINER)
VAPOR LINER
EXTERIOR PERMANENT VACUUM MEASURING POINT (TYP)26
NTSVM-2A
WALL (VARIES)PROVIDE LOCKABLE WEATHERPROOF
ENCLOSURE ON OUTSIDE OF BUILDING
WALL (OR SIMILAR). AFFIX LABEL AT
BOX WITH "VAPOR MITIGATION SYSTEM".
PLACE REMOVABLE PIPE PLUG AT END
OF 2" PIPE.
VAPOR LINER SEALED TO CONCRETE PER
MANUFACTURERS INSTRUCTIONS (TYP)
2" SCH 40 PVC 90
DEGREE ELBOW
2" SOLID SCH 40 PVC PIPE
INSTALLER SHALL SECURE PIPE TO
PREVENT MOVEMENT OR DAMAGE TO
PIPE DURING THE CONCRETE POUR
EXTERIOR GRADE
(VARIES)BASE COURSE
2" OPEN ENDED PIPE, PLACED AT A MINIMUM OF
5' FROM EXTERIOR TURN-DOWN SLABS
PIPE SLEEVE. SLEEVE SHALL NOT PENETRATE
VAPOR LINER.
VAPOR LINER
VAPOR LINER SEALED TO PIPE PER
MANUFACTURERS INSTRUCTIONS (TYP)
POSITION PIPE TO AVOID REINFORCING
(REBAR). SEE STRUCTURAL DRAWINGS
FOR REINFORCING DETAILS
BASE COURSE
FLOOR CLEANOUT, ADJUSTABLE,
4" DIA ZURN INDUSTRIES
MODEL #CO2450-PV4 (OR ENGINEER
APPROVED EQUIVALENT)
SEE DETAIL 25/VM-3
FLUSH WITH
FINISHED FLOOR
PROVIDE PIPE SUPPORT TO PREVENT LOW POINT
IN SOLID SECTION OF PIPE. MAINTAIN MINIMUM
1% SLOPE TOWARD SLOTTED SECTIONS OF PIPE.
(SEE SPECIFICATION #4)
2" SOLID SCH 40 PVC
25 VIMS MONITORING POINT THROUGH THICKENED SLAB WITH EXTENDED INTAKE PIPE
PIPE SLEEVE
NTSVM-2A
OPEN-ENDED PIPE
2" SCH 40 PVC 90-DEGREE
ELBOW
VAPOR LINER PENETRATION SEALED TO
PIPE PER MANUFACTURER INSTRUCTIONS
WALL (VARIES)
28
NTS
VAPOR BARRIER PENETRATION SEALED TO
PIPE PER MANUFACTURER INSTRUCTIONS
1" SCH 40 PVC 90 DEGREE ELBOW
OPEN ENDED PIPE
BASE COURSE
(SEE SPECIFICATION #1)
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
VIMS AT SHEAR WALL
NTS
29
VM-2A
VAPOR LINER SEALED TO OUTSIDE OF CONCRETE
AND WATERPROOFING/INSULATION (IF PRESENT)
PER MANUFACTURER INSTRUCTIONS
VAPOR LINER
(SEE SPECIFICATION #1)
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 #17-29
VM-2A
NOTES:
VIMS = VAPOR INTRUSION MITIGATION SYSTEM
TYP = TYPICAL
SCH = SCHEDULE
PVC = POLYVINYL CHLORIDE
NTS = NOT TO SCALE
ALL PIPE MEASUREMENTS ARE BY DIAMETER
PROFESSIONAL
APPROVAL
DEVELOPER:
GREYSTAR
1545 PEACHTREE STREET NE
ATLANTA, GEORGIA
H&H NO. WPP-011
ASCENT SOUTH ENDSOUTH BOULEVARD & EAST KINGSTONCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 24051-20-060DATE: 1-12-22
01/12/22
REVISIONS
REV DATE DESCRIPTION
0 11/01/21 DEQ SUBMISSION
1 01/12/22 DEQ SUBMISSION REV 1
S:\AAA-Master Projects\White Point Partners (WPP)\WPP-011 Dilworth Auto Service\VIMP\Figures\VIMP Design_R1.dwg, 1/13/2022 10:09:19 AM, DWG To PDF.pc3
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
SPECIFICATIONS
VM-3
NOTES:
VIMS = VAPOR INTRUSION MITIGATION SYSTEM
TYP = TYPICAL
SCH = SCHEDULE
PVC = POLYVINYL CHLORIDE
NTS = NOT TO SCALE
MIL = THOUSANDS OF AN INCH
ALL PIPE MEASUREMENTS ARE BY DIAMETER
PROFESSIONAL
APPROVAL
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 LINER SHALL BE VAPORBLOCK PLUS 20 (VBP20) 20-MIL VAPOR LINER MANUFACTURED BY RAVEN INDUSTRIES (RAVEN). AS AN ALTERNATIVE, DRAGO WRAP 20-MIL VAPOR LINER
MANUFACTURED BY STEGO INDUSTRIES, LLC (STEGO) CAN BE USED, PENDING APPROVAL BY THE ENGINEER.
2.1.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.
2.2.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.
2.3.VAPOR BARRIER SHALL BE INSTALLED ON SLABS, WALLS, AND OTHER STRUCTURAL COMPONENTS WHICH COME IN CONTACT WITH BOTH AN OCCUPIABLE ENCLOSED SPACE AND SOIL.
2.4.VAPOR BARRIER SHALL BE TERMINATED AT LEAST 1 FT PRIOR TO CONTACT WITH NON-MITIGATED AREAS, INCLUDING THE GROUND SURFACE.
2.5.ALL CONCRETE BOXOUTS, INCLUDING BUT NOT LIMITED TO SHOWER/BATH TUB DRAINS, SHALL HAVE A CONTINUOUS VAPOR LINER INSTALLED BELOW.
3.SUB-SLAB SLOTTED VAPOR COLLECTION PIPE SHALL BE THREADED FLUSH JOINT 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 CAP WITH 12" DIA HOLES OR SLOTS SHOULD BE INSTALLED ON THE OPEN PIPE END. PVC PIPE JOINTS
SHOULD BE DRY-FITTED BELOW THE SLAB OR CONNECTED WITH SCREWS.
3.1.SLOTTED COLLECTION PIPING SHALL BE SET WITHIN A MINIMUM 5” BASE COURSE LAYER, WITH APPROXIMATELY 1” OF BASE COURSE MATERIAL BELOW THE PIPING.
3.2.SOIL GAS COLLECTOR MAT 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" DIA METAL PIPE RATED FOR DRAIN, WASTE, VENT (DWV) APPLICATIONS SHALL BE INSTALLED TO CONNECT EACH SLAB PENETRATION LOCATION TO THE EXHAUST DISCHARGE POINT.
ABOVE-SLAB RISER DUCT PIPE 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. VERTICAL RISER PIPING SHALL BE CONNECTED AIR-TIGHT FITTINGS (NO-HUB FITTINGS AND PIPES ARE ACCEPTABLE). VERTICAL RISER PIPING
MUST BE INSTALLED PER 2018 NORTH CAROLINA STATE PLUMBING CODE. 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.EXHAUST DISCHARGE LOCATIONS SHALL BE A MINIMUM OF 10 FT FROM ANY OPERABLE OPENING OR AIR INTAKE INTO THE BUILDING, 10 FT FROM PUBLIC AREAS, AND 20 FT FROM THE
GROUND ELEVATION. AN ELECTRICAL JUNCTION BOX (120V REQUIRED) FOR OUTDOOR USE SHALL BE INSTALLED WITHIN 5FT OF THE EXPOSED RISER PIPE PRIOR TO THE EXHAUST DISCHARGE
FOR POTENTIAL FUTURE CONVERSION TO ELECTRIC FANS, IF REQUIRED. A MINIMUM 2 FT SECTION OF RISER PIPE MUST BE INSTALLED IN A VERTICAL ORIENTATION IMMEDIATELY PRIOR TO THE
EXHAUST DISCHARGE WITH FLANGES OR UNIONS TO ALLOW ROOM FOR A POTENTIAL FUTURE ELECTRIC FAN, 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 TO THE TURBINE FANS 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 PIPING 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. 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. 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. MONITORING POINT INTAKE SHALL BE MINIMUM 5-FT FROM EXTERIOR FOOTING.
7.1.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, WHEN POSSIBLE, AND SHALL NOT USE PRODUCTS CONTAINING THE
COMPOUNDS TETRACHLOROETHENE (PCE) OR TRICHLOROETHENE(TCE). 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 PORTIONS OF THE BUILDING WITH AT LEAST 12" SEPARATION OF ADJACENT GRAVEL BEDS. THE THICKENED SLAB OR FOOTER SHALL BE A
MINIMUM OF 5" GREATER IN THICKNESS THAN THE SURROUNDING SLAB.
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.
11.INSPECTIONS: 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 TURBINE
FANS 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 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
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 (SEE DETAIL #16). THE INSTALLER
SHALL CONFIRM THAT THE WATERPROOFING PRODUCTS AND SEALANTS USED DURING CONSTRUCTION ARE COMPATIBLE WITH THE SPECIFIED VAPOR BARRIER.
01/12/22
DEVELOPER:
GREYSTAR
1545 PEACHTREE STREET NE
ATLANTA, GEORGIA
H&H NO. WPP-011
ASCENT SOUTH ENDSOUTH BOULEVARD & EAST KINGSTONCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 24051-20-060DATE: 1-12-22
REVISIONS
REV DATE DESCRIPTION
0 11/01/21 DEQ SUBMISSION
1 01/12/22 DEQ SUBMISSION REV 1
S:\AAA-Master Projects\White Point Partners (WPP)\WPP-011 Dilworth Auto Service\VIMP\Figures\VIMP Design_R1.dwg, 1/13/2022 10:09:57 AM, DWG To PDF.pc3

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 ࢜ 1.13 x 10-࢙࢘P࢖VHFRU x 10-¹³ m/s
TOLUENE PERMEANCE See Note ࢜ 1.57 x 10-࢙࢘P࢖VHFRU x 10-¹³ m/s
ETHYLBENZENE PERMEANCE See Note ࢜ 1.23 x 10-࢙࢘P࢖VHFRU x 10-࢚࢘ m/s
M & P-XYLENES PERMEANCE See Note ࢜ 1.17 x 10-࢙࢘P࢖VHFRU x 10-࢚࢘ m/s
O-XYLENE PERMEANCE See Note ࢜ 1.10 x 10-࢙࢘P࢖VHFRU x 10-࢚࢘ m/s
HYDROGEN SULFIDE See Note 9 1.92E-࢙࢟ m/s
TRICHLOROETHYLENE (TCE) See Note ࢜ 7.66 x 10-¹¹ m²/sec or 1.05 x 10-࢚࢘ m/s
PERCHLOROETHYLENE (PCE)See Note ࢜ 7.22 x 10-¹¹ m²/sec or 1.04 x 10-࢚࢘ 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 (HࢧS) Transport through Simulated Interim Covers with Conventional and Co-Extruded Ethylene-Vinyl Alcohol (EVOH) Geomembranes.
INSTALLATION GUIDELINES - With VaporSeal™ 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
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 Barrier
VaporSeal™* 4” Seaming Tape
VaporSeal™* 12” Seaming/Repair Tape
Butyl Seal 2-Sided Tape
VaporBoot 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 7RSRULJLQDOGLDJUDPDQG¿JXUHZHUHUHSULQWHGZLWKSHUPLVVLRQE\WKH3RUWODQG&HPHQW$VVRFLDWLRQ5HIHUHQFH.DQDUH+RZDUG0&RQFUHWH)ORRUVDQG0RLVWXUH(%3RUWODQG&HPHQW$VVRFLDWLRQ6NRNLH,OOLQRLVDQG1DWLRQDO5HDG\0L[HG&RQFUHWH$VVRFLDWLRQ6LOYHU6SULQJ0DU\ODQG86$SDJHV
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
9DSRU6HDOΫ7DSH
5DYHQ%XW\O6HDO6LGHG7DSH 5DYHQ%XW\O6HDO6LGHG7DSH
9DSRU%RRW3OXV3UHIRUPHG%RRW 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 2ULJLQDO¿JXUHGLDJUDPLVUHSULQWHGZLWKSHUPLVVLRQE\WKH3RUWODQG&HPHQW$VVRFLDWLRQ5HIHUHQFH.DQDUH+RZDUG0&RQFUHWH)ORRUVDQG0RLVWXUH(%3RUWODQG&HPHQW$VVRFLDWLRQ6NRNLH,OOLQRLVDQG1DWLRQDO5HDG\0L[HG&RQFUHWH$VVRFLDWLRQ6LOYHU6SULQJ0DU\ODQG86$SDJHVMethod 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
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
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 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

Zurn Industries Floor Clean-out Product Specification Sheet

Attachment C-5

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