25063 Simpsons Texaco Service VIMP 20220826

Via Email
August 26, 2022 NCDEQ – Division of Waste Management Brownfields Program
1646 Mail Service Center Raleigh, NC 27699-1646 Attn: Mr. Bill Schmithorst, PG

Re: Vapor Intrusion Mitigation Plan Simpson’s Texaco Service South Boulevard and Scaleybark Road
Charlotte, North Carolina Brownfields Project No. 25063-21-060 H&H Project No. EMB-002
Dear Bill: On behalf of Embrey Partners, LLC and its single purpose entity Scaleybark CLT, LLC, please find the enclosed Vapor Intrusion Mitigation Plan (VIMP) prepared for the proposed redevelopment on the Simpson’s Texaco Service Brownfields property located in Charlotte, Mecklenburg County. The
VIMP has been revised to address DEQ comments provided on August 24, 2022. Should you have questions or need additional information prior to providing approval, please do not hesitate to contact us at [phone].
Sincerely, Hart & Hickman, PC
Alexis McKenzie, PE Project Engineer
Enclosure cc: Mr. Brad Knolle, Embrey (via email) Mr. Garrett Fox, Embrey (via email)
Mr. Joel Albea, Embrey (via email) Ms. Mary Katherine Stukes, Moore & Van Allen (via email)
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Vapor Intrusion Mitigation Plan LoSo EPL Apartments 4001 South Boulevard Charlotte, North Carolina H&H Job No. EMB-002
Table of Contents
1.0 Introduction ................................................................................................................ 1
1.1 Background............................................................................................................2
1.2 Vapor Intrusion Evaluation ...................................................................................2
2.0 Design Basis ................................................................................................................ 5
2.1 Base Course Layer and Vapor Barrier ...................................................................5
2.2 Horizontal Collection Piping and Vertical Riser Piping .......................................7
2.3 Monitoring Points ..................................................................................................8
2.4 General Installation Criteria ..................................................................................9
3.0 Quality Assurance / Quality Control ...................................................................... 10
4.0 VIMS Effectiveness Testing .................................................................................... 11
4.1 Influence Testing .................................................................................................11
4.2 Pre-Occupancy Sub-Slab Soil Gas Sampling ......................................................11
4.3 VIMS Effectiveness Results ................................................................................13
5.0 VIMS Effectiveness Monitoring ............................................................................. 16
6.0 Future Tenants & Building Uses ............................................................................ 17
7.0 Reporting .................................................................................................................. 18

Figures
Figure 1 Site Location Map
Figure 2 Site Map

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Attachments
Attachment A Previous Assessment Data Summary
Attachment B Vapor Intrusion Mitigation Design Drawings
Attachment C VIMS Product Specifications

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Vapor Intrusion Mitigation Plan LoSo EPL Apartments 4001 South Boulevard Charlotte, North Carolina H&H Job No. EMB-002 1.0 Introduction

On behalf of Embrey Partners LLC and its single purpose entity Scaleybark CLT, LLC
(Prospective Developer or PD), Hart & Hickman, PC (H&H) has prepared this Vapor Intrusion
Mitigation Plan (VIMP) for the Simpson’s Texaco Service North Carolina Department of
Environmental Quality (DEQ) Brownfields Property (Brownfields Project No. 25063-21-060)
which is planned for redevelopment with a new high-density multifamily residential apartment
building and associated parking garage. The Simpson’s Texaco Service Brownfields property is
located at 4001 South Boulevard, at the intersection of South Boulevard and Scaleybark Road, in
Charlotte, Mecklenburg County, North Carolina and is comprised of five contiguous parcels
(Parcel ID Nos. 14906111, 14906120, 14906123, 14906122, and 14906121) that collectively
total approximately 4.3 acres of land. A Site location map is provided as Figure 1.

The north-northwestern portion of the Site (4001 South Boulevard) is developed with a Circle K
gas station facility which is currently vacant. The north-central portion of the Site (4009 South
Boulevard) is developed with a commercial restaurant building most recently occupied by Zack’s
Hamburgers. The northeastern portion of the Site (200 Scaleybark Road) is developed with an
automotive repair facility occupied by Hondaworks. The eastern portion of the Site (210
Scaleybark Road) is developed with a commercial building occupied by a rental company for
office space and the central and southern portions of the Site (124 Scaleybark Road) are
developed with a self-storage facility. A Site Map is included as Figure 2. Proposed
redevelopment includes removal of the current Site building and construction of a high-density
multifamily residential apartment complex with amenity spaces and a multi-level parking garage.

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1.1 Background

The 4001 South Boulevard Site parcel formerly operated as a Circle K Gas Station No. 4743
(Circle K). A Phase I Limited Site Assessment (LSA) was completed on the Circle K property in
August 2000. Results of the groundwater samples identified elevated levels of petroleum-related
compounds at concentrations above the screening criteria and a Phase II LSA was completed in
November 2000. Phase II LSA groundwater sample results indicated Light Non-Aqueous Phase
Liquid (LNAPL) was detected in two groundwater monitoring wells. In 2014, ATC Associates
of North Carolina, PC (ATC) completed soil and groundwater sampling activities which
indicated that petroleum compounds in groundwater remained at levels above the DEQ 2L
Groundwater Quality Standards (2L Standards), but below the DEQ UST Section Gross
Contaminant Levels (GCLs) and no LNAPL was present. A Notice of Residual Petroleum was
recorded on the property deed in July 2014.

In October 2021, H&H completed Phase II ESA activities at the Site which included collection
of soil, groundwater, and soil gas samples for laboratory analysis to evaluate potential risks
associated with the Site. Results of the groundwater assessment activities indicated that
groundwater concentrations above 2L Standards and/or DEQ Division of Waste Management
(DWM) Vapor Intrusion Groundwater Screening Levels (GWSLs) are primarily located in the
northwestern portion of the Site in the vicinity of the former Circle K UST basin.

Results of the soil gas assessment activities completed within the footprint of the proposed
building and parking garage indicated the presence of petroleum-related compounds at
concentrations above the DEQ DWM Vapor Intrusion SGSLs in nine of twelve soil gas samples.
Chlorinated solvents including tetrachloroethene and trichloroethene were not detected at
concentrations above the DEQ DWM SGSLs in soil gas samples collected at the Site.

1.2 Vapor Intrusion Evaluation
H&H utilized the DEQ Risk Calculator (June 2021) to evaluate potential cumulative risks for the
soil gas to indoor air vapor intrusion pathway using the highest concentration of any compound
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detected in any soil gas sample collected in the areas proposed for residential redevelopment to
model the potential for vapor intrusion under a hypothetical “worst-case” scenario. Typically,
vapor intrusion mitigation for a building is not considered unless the cumulative lifetime
incremental carcinogenic risk (LICR) is 1 x 10-4 or less for potential carcinogenic risks and/or
the cumulative hazard index (HI) is 1.0 or less for potential non-carcinogenic risks. DEQ risk
calculator results indicate that under a hypothetical worst-case scenario for the soil gas to indoor
air vapor intrusion pathway for residential use, the cumulative LICR is 1.2 x 10-4 and the
cumulative HI is 1.7.

Based on results of the hypothetical worst-case scenario risk calculator results for the soil gas to
indoor air vapor intrusion pathway which exceed acceptable risk levels for residential use, the
PD plans to install a vapor intrusion mitigation system during construction of the proposed
residential building at the Site. Based on review of the laboratory analytical data and risk
evaluation results, potential structural vapor intrusion can be managed through installation of
passive vapor intrusion mitigation measures during construction of the proposed building.

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 standard vapor intrusion mitigation provisions anticipated to
be included 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 the H&H professional engineer makes the following statement:

The Vapor Intrusion Mitigation System (VIMS) detailed herein is designed to mitigate intrusion
of subsurface vapors into the subject buildings from known Brownfields property contaminants
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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.

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2.0 Design Basis
The VIMS design drawings for the proposed multi-family residential apartment building and
ground floor, occupiable spaces of the parking garage are included in Attachment B as Sheets
VM-1, VM-2, VM-2A, VM-3, VM-4, VM-5, and VM-6 (dated June 21, 2022) 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 connected to wind-driven ventilators installed above the building roof to enhance the
passive system. The residential buildings and occupiable spaces in the parking garage will not
contain pour-back spaces. The residential building will be constructed with slab-on-grade and
column foundation. The ground floor spaces of the parking garage will be slab on grade with
thickened slabs as depicted on the VIMS design drawings. The ground floor square footage of
the residential apartment building is approximately 28,100 square feet. The ground floor spaces
of the parking garage which are occupiable or connected to occupiable space are also
incorporated in the VIMS and include a maintenance and electrical room, elevator lobby, and
stairwell. In addition to the occupied spaces, the bike storage room, loading dock, and trash
rooms will be lined with vapor barrier, but will not be occupied spaces and therefore are outside
of the sub-slab piping network.

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 (washed #57 stone, or similar high permeability stone approved by the
design engineer) 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. The vapor liner will
also be installed around elevator pits. A horizontal collection piping network will be installed
within the base course stone layer below the ground floor slabs 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 the VIMS design drawings (Attachment B).
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The vapor liner will consist of a volatile organic compound (VOC) rated vapor barrier, such as
Vaporblock® Plus 20 (VBP20) manufactured by Raven Industries (Raven), or Drago® Wrap
Vapor Intrusion Barrier (Drago Wrap) manufactured by Stego® Industries (Stego). Vapor liners
will be installed per manufacturer installation instructions. Technical specifications for each
vapor liner product listed above are included in Attachment C.

The liners will be installed over the base course stone layer to cover the areas shown on the
design sheets. Each vapor liner manufacturer recommends select sealing agents (mastics, tapes,
etc.) for their vapor barrier product. In accordance with manufacturer installation instructions,
alternative vapor liner products that are not approved by the manufacturers for sealing should not
be used, unless approved by the design engineer and specific manufacturer.

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 envelope 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
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 design
engineer certifying the VIMP, an alternative sealant product specified by the vapor liner
manufacturer can be used, such as Raven Pour-N-Seal™ or manufacturer specified mastics.
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.

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

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

To enhance the passive VIMS, Empire Model TV04SS (stainless steel) ventilators (or design
engineer approved alternative) will be installed on the discharge end of the vertical riser piping
above the building roofline to further promote air exhaust from the risers. Exhaust discharge
locations must be a minimum of 2 ft above the roofline and a minimum 10 ft from an operable
opening (e.g., door or window) or air intake into the building.

Vertical exhaust riser pipes will terminate above the roof. Note that the exhaust locations on the
roof depicted in the VIMS design may be repositioned within the requirements specified above
and pending approval by the design engineer certifying the VIMP. Product specifications for the
proposed turbine ventilators are provided in Attachment C. Electrical junction boxes (120VAC)
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will be installed on the roof in proximity to riser exhaust discharges should connection of an
electrical (active) fan be warranted in the future. If the system is required to go active and
electrical fans are needed, the fans will not be installed in attic space.

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 soil gas samples for laboratory analysis. The
monitoring point locations are shown on the VIMS design drawings (Attachment B).

In general, monitoring points are placed at remotely distant locations from vertical riser piping
locations and in representative areas of the ground floor enclosed areas. To limit disturbance to
residents during future monitoring events, the majority of the monitoring point access ports will
be located in the walls or flush-mount in the floors of the hallways, mechanical rooms, or
amenity spaces and protected by a floor clean-out style cover or wall panel. Several monitoring
points will be connected to extended sub-slab horizontal pipes which place the intakes of the
monitoring points below occupied spaces. The extended monitoring points are expected to have
no more than approximately 6 ft of extension pipe. Product specifications for the proposed floor
cleanout covers are provided in Attachment C.

In the event that a monitoring point cannot be installed due to building component conflict or is
damaged/destroyed during construction, a replacement monitoring point can be constructed,
pending approval by the design engineer certifying the VIMP. The replacement point(s) shall
consist of one of the specified designs in the design drawings. 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 types and locations of monitoring points installed will be documented in as-built
drawings provided in a VIMS installation completion report.
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2.4 General Installation Criteria
The installed VIMS components (e.g., vapor barrier, piping, monitoring points, etc.) shall be
protected by the installation contractor and sub-contractors throughout the project. Protective
measures (e.g., flagging, protective boards, etc.) shall be used as needed to prevent damage to the
VIMS components. For example, the monitoring points and riser duct piping should be capped
with a removable slip-cap or cover immediately following installation to prevent water and/or
debris from entering the VIMS, and vapor barrier shall be protected from punctures and tears
during Site-work.

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

Although, previous assessment activities did not indicate a widespread source of volatile
compounds that could contribute to potential unacceptable levels of vapors in the subsurface,
individual utility trenches below entering beneath the building envelope or within the building
footprint are proposed to be backfilled with compacted soils which is expected to minimize
lateral vapor migration within chases and trenches. As such, utility trench dams that are
sometimes warranted to reduce the potential for lateral vapor migration along transmissive
backfill layers (e.g., gravel, sand, etc.) from areas of elevated contamination to areas of lower
containment are not warranted based on the specific Site conditions.
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3.0 Quality Assurance / Quality Control
For quality assurance and quality control (QA/QC) purposes, inspections will be conducted
during each phase of 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 or backfilling applicable sub-grade
vertical walls;
(3) Inspection of above-grade vertical riser piping; and
(4) Inspection of wind ventilators and riser pipe connections.

Each component of the VIMS shall be inspected and approved by the design engineer, or a
designee of the design engineer, prior to being covered. Additional inspections will be
conducted if the system(s) are activated to verify electric fans (if installed) function as designed.
Each inspection will be performed by, or under direction of, the design engineer certifying the
VIMP.

Inspections will be combined, when possible, depending on construction sequencing and
schedule. The inspections will include field logs and photographs for each section of slab.
Locations where multiple penetrations are present and where products such as Pour-N-Seal™ are
used will be photographed and noted on the field logs. To minimize potential preferential
pathways through the slab, contractors will not use hollow piping to support utilities in
preparation for concrete pours. Contractors will be instructed to remove hollow piping observed
during the field inspections. The contractor shall notify the engineer certifying the VIMP, or
his/her designee, with a 48-hour notice prior to a planned inspection, and H&H will provide a
subsequent notice to DEQ for the pending inspection.
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4.0 VIMS Effectiveness Testing
4.1 Influence Testing

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

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

4.2 Pre-Occupancy Sub-Slab Soil Gas Sampling

Following VIMS installation, but prior to occupancy of the building(s), sub-slab soil gas samples
will be collected from select monitoring points to further evaluate the potential for structural
vapor intrusion. The sub-slab soil gas samples will be collected from locations generally
separated by slab footings and at the furthest extents of the VIMS treatment areas. Sub-slab soil
gas sample analytical results will be used to evaluate potential risks to future occupants of the
building. Seven (7) sub-slab samples soil gas samples will be collected from select monitoring
points in the ground floor spaces of the residential building and parking garage. One duplicate
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sub-slab soil gas sample using a laboratory-supplied “T” fitting for laboratory QA/QC purposes
will be collected during each sampling event.

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

The sub-slab soil gas samples will be collected using laboratory supplied 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 event shall remain above 0 inches of mercury (inHg), with a target
vacuum of approximately 5 inHg. H&H understands that analytical results for a sample will not
be accepted by DEQ if internal vacuum for that sample reaches 0 inHg.

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

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4.3 VIMS Effectiveness Results

The results and analysis of the sub-slab soil gas sampling will be submitted to DEQ with the
final VIMS installation completion report (discussed in Section 7.0). After receipt of the sub-
slab soil gas sample analytical results, H&H will use the most recent version of the DEQ Risk
Calculator to evaluate cumulative potential vapor intrusion risks under a residential scenario for
each sample location or VIMS treatment area, whichever is most applicable. H&H will consider
the VIMS effective if the calculated cumulative risks are 1x10-4 or less for potential carcinogenic
risks and a Hazard Index of 1.0 or less for potential non-carcinogenic risks, in accordance with
DEQ risk calculator thresholds. H&H acknowledges that DEQ may still request additional
sampling if Site contaminants of concern are elevated, even if the risk calculations are
acceptable. If pre- or post-occupancy sub-slab soil gas sample results identify significantly
increased risk levels from Site contaminants that cannot be attributed to construction materials,
or the presence of trichloroethene in sub-slab soil gas, indoor air sampling may be required.

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. If an additional round of samples
indicates results within acceptable risk levels, no further pre-occupancy sampling will be
conducted. If calculated cumulative risks for a non-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.

Indoor Air Sampling (if warranted)
As summarized in Section 1.0, results of previous assessment activities completed at the Site did
not identify chlorinated solvents above screening levels in Site media. As such, if unacceptable
risk levels are detected in the sub-slab soil gas samples, indoor air samples will be collected in
accordance with the DWM VI Guidance. The building is intended to be occupied shortly
following completion and initialization of the HVAC system. Therefore, the indoor air sampling
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events (if warranted) will be conducted following construction and complete installation of the
VIMS and fully enclosed building including a minimum of two weeks with operational
ventilators, but may be conducted prior to initialization of the HVAC system(s). If indoor air
sampling is required, the locations, number of indoor air samples, and timing for the indoor air
samples will be chosen based on sub-slab soil gas sampling analytical data and discussions
between the design engineer and DEQ.

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

The starting and ending vacuum in each canister will be recorded on the sample chain of
custody. Periodic checks will be conducted by sampling personnel to monitor the pressure
within the Summa canisters during sampling to ensure adequate sample volume is collected. The
sample canisters will then be labeled and shipped under standard chain of custody protocols to a
qualified laboratory for analysis of select VOCs by EPA Method TO-15. The select compound
list will be based upon the compounds previously detected in soil, groundwater, exterior soil gas,
and sub-slab soil gas 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 MDLs or to the extent
possible, the DEQ DWM Residential Vapor Intrusion Indoor Air Screening Levels (IASLs). In
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addition, an Indoor Air Building Survey form (Appendix C of the DWM VI Guidance) will be
completed for each sampling event.

New construction materials such as treated lumber, paint, caulk, carpet, adhesives, sealants 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.

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

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

• Additional indoor air sampling is warranted to confirm that the VIMS is effective (per the
DWM VI Guidance, in the case where calculated cumulative risks are greater than 1x10-4
for potential carcinogenic risks or above a hazard index of 1 for potential non-
carcinogenic risks). Active fans may be installed as part of the VIMS and follow-up sub-
slab soil gas and indoor air sampling will be performed after installation of the fans
should results of confirmation indoor air samples indicate that passive treatment is
inadequate (in the case where calculated cumulative risks continue to be greater than
1x10-4 for potential carcinogenic risks or above a hazard index of 1 for potential non-
carcinogenic risks).
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5.0 VIMS Effectiveness Monitoring
The VIMS is proposed as a passive system which will include vapor extraction through sub-slab
collection piping and solid riser pipes that discharge sub-slab vapors above the roofline. The
passive system will be enhanced with ventilators to enhance air exhaust from the sub-slab. 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. The specific electric fans to be
used will be selected by the design engineer based on the results of the influence testing
discussed in Section 4.0.

Post-construction VIMS effectiveness monitoring will include semi-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 and the first post-installation event will be completed
approximately 6 months after the initial pre-occupancy sampling event. If pre- or post-
occupancy sub-slab soil gas sample results identify significantly increased risk levels from Site
contaminants that cannot be attributed to construction materials, or the presence of
trichloroethene in sub-slab soil gas, indoor air sampling may be required.

If the semi-annual sampling results indicate consistent or decreasing concentrations within
acceptable risk levels, a request to modify or terminate sampling will be submitted for DEQ
approval. No changes to the sampling frequency or termination of sampling will be
implemented until written approval is obtained from DEQ.

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6.0 Future Tenants & Building Uses
The future use of the proposed Site buildings includes high-density multifamily residential with
an associated parking deck. After occupancy of the Site buildings, VIMS maintenance and
upkeep will be the responsibility of the building owner or property management group. If vapor
mitigation components are damaged or need to be altered for building renovations, the building
owners or management will be instructed to contact appropriate parties to conduct appropriate
maintenance.

A North Carolina licensed Professional Engineer (NC PE) will be contacted to oversee or inspect
the modifications or repair activities, and a report shall be submitted to DEQ detailing the repairs
or alterations. To aid in identification of the vapor mitigation piping, the piping will be labeled
with “Vapor Mitigation – Contact Maintenance”, or similar language, on accessible piping at
intervals of no greater than 10-linear feet. Similar labels will also be affixed near the exhaust
discharge on the roof.

As part of the standard annual Land Use Restriction Update submittal that will be required as
part of the pending Brownfields 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.
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7.0 Reporting
A VIMS Installation Completion Report (sealed by a NC PE) documenting installation activities
associated with the VIMS will be submitted to DEQ following confirmation that the mitigation
system is installed and effectively mitigating potential vapor intrusion risks to building
occupants. The report will include a summary of VIMS installation activities such as
representative photographs and as-built drawings, QA/QC measures, SDSs of materials used in
construction, VIMS effectiveness testing results, and inspection documents. The report will also
include a statement provided by the design engineer as to whether the VIMS was installed in
accordance with the DEQ approved VIMP and is protective of public health as defined in
Section 1.0, and as evidenced by the VIMS inspections performed by the engineer or designee of
the design engineer, results of the influence testing, results of the analytical testing, and QA/QC
measures as described in this VIMP. Deviations from the approved design will be provided in
the report.

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

After each annual post-construction (post-occupancy) sub-slab soil gas sampling event, a report
will be submitted to DEQ to document the sampling activities and results.

Copyright:© 2013 National Geographic Society, i-cubed
SITE LOCATION MAP
SIMPSON'S TEXACO SERVICESOUTH BOULEVARD & SCALEYBARK ROAD CHARLOTTE, NORTH CAROLINA
DATE: 6-28-21
JOB NO: EMB-002
REVISION NO: 0
FIGURE NO: 1
2923 South Tryon Street - Suite 100Charlotte, North Carolina 28203704-586-0007 (p) 704-586-0373 (f)License # C-1269 / # C-245 Geology
TITLE
PROJECT
0 2,000 4,000
SCALE IN FEET
SITE
Path: S:\AAA-Master Projects\Embrey\South Boulevard Assembly\Figures\Figure-1.mxdN
U.S.G.S. QUADRANGLE MAP
CHARLOTTE WEST, NORTH CAROLINA 2013CHARLOTTE EAST, NORTH CAROLINA 2013
QUADRANGLE7.5 MINUTE SERIES (TOPOGRAPHIC)
REVISION NO. 0
JOB NO. EMB-002
DATE: 7-28-21
FIGURE NO. 2
SIMPSON'S TEXACO SERVICE
SOUTH BOULEVARD & SCALEYBARK ROAD
CHARLOTTE, NORTH CAROLINA
SITE MAP
LEGEND
SITE PROPERTY BOUNDARY
PARCEL BOUNDARY
LIGHTRAIL
POLE-MOUNTED TRANSFORMER
DUMPSTER
FLOOR DRAIN
ABOVEGROUND LIFT
ABOVEGROUND STORAGE TANK
ABANDONED MONITORING WELL
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 FROM
MECKLENBURG COUNTY GIS (2021).
FORMER ZACK'S
HAMBURGERS
(4009 SOUTH BOULEVARD)
SOUTH END SELF STORAGE
(124 SCALEYBARK ROAD)
CROSLAND CENTRE COMMERCIAL BUILDINGS -
FORMER MITCHELL'S FORMAL WEAR (DSCA ID: DC600005)
(BROWNFIELDS PROPERTY NO. 09013-05-060)
(3901-3917 SOUTH BOULEVARD / 101-145 SCALEYBARK ROAD)
MULTI-TENANT
COMMERCIAL BUILDING
(4004 SOUTH BOULEVARD)
HIDDEN TREASURES
THRIFT & CONSIGNMENT
(4035 SOUTH BOULEVARD)
ACCENT GLASS
(4031 SOUTH BOULEVARD)
RESIDENTIAL
RESIDENTIAL
SOUTH END SELF STORAGE
(4040 SOUTH BOULEVARD)
SC
A
L
E
Y
B
A
R
K

R
O
A
D
SOUTH BOULEVARDCONWAY AVENUEOLD PINEVILLE ROADCHARLOTTE
INVESTMENT HOMES
(210 SCALEYBARK ROAD)
VACANT BUILDING / FORMER
GAS STATION
(4001 SOUTH BOULEVARD)
DEBRIS
275-GALLON
TOTES
55-GALLON
RACE FUEL
DRUMS
FORMER
DISPENSER
ISLANDS
FORMER UST
BASIN
FORMER UST
BASIN
GREASE TRAP
GREASE
RECYCLE
CONTAINER
WASTE OIL
IN-GROUND
COVER
55-GALLON
WASTE OIL
DRUMS
HONDAWORKS
(200 SCALEYBARK ROAD)
ABANDONED
IN-GROUND LIFT

Attachment A

Previous Assessment Data Summary
Table 1Summary of Soil Analytical Data Simpson's Texaco ServiceCharlotte, North Carolina Brownfields Project No. 25063-21-060 H&H Job No. EMB-002Sample IDSB-2 SB-3 SB-4 SB-5 SB-7 COMP-1 COMP-2 BKG-1 BKG-2Date10/21/2021 10/21/2021 10/22/2021 10/22/2021 10/21/2021 10/22/2021 10/22/2021 10/20/2021 10/20/2021Depth (ft bgs)2-4 8-10 2-4 2-4 3-5 1-3 11-13 1-3 3-5 Range MeanUnitsPCBs (8082A) NANANANANANABDLBDLBDLNANANANAVariesVaries----VOCs (8260D)Acetone 0.012 J 0.020 J 0.032 0.015 J 0.014 J 0.009 J 0.006 J 0.006 J<0.0030.011 J 0.014 JNANA12,000140,000----Benzene0.006 J 0.023<0.0008 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0009 <0.0007 <0.0007NANA1.25.4----Bromodichloromethane<0.0010.002 J<0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001NANA0.311.4----Bromoform<0.0010.003 J<0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001NANA2090----Carbon Disulfide<0.0009 <0.00090.006 J<0.0008 <0.0008 <0.0008 <0.0008 <0.0008 <0.0010.0009 J<0.0008NANA160740----Chlorodibromomethane<0.0010.002 J<0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001NANA8.339----Chloroform0.002 J 0.012<0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001NANA0.341.5----1,4-Dichlorobenzene0.0009 J<0.0009 <0.0008 <0.0008 <0.0007 <0.0007 <0.0008 <0.0008 <0.0009 <0.0008 <0.0008NANA2.812----Ethylbenzene0.002 J 0.005 J<0.0008 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0009 <0.0007 <0.0007NANA6.127----2-Hexanone0.001 J 0.012 J<0.0008 <0.0008 <0.0007 <0.0007 <0.0008 <0.0008 <0.001 <0.0008 <0.0008NANA42280----Methyl Ethyl Ketone (MEK)0.003 J 0.007 J 0.006 J 0.002 J 0.001 J 0.0010 J<0.0008 <0.0008 <0.0010.001 J 0.002 JNANA5,50040,000----Methyl tert-butyl ether (MTBE) 0.006 J 0.051<0.0008 <0.0008 <0.0007 <0.0007 <0.0008 <0.0008 <0.001 <0.0008 <0.0008NANA49220----Naphthalene<0.0010.003 J<0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001NANA2.19----n-Propylbenzene<0.00070.001 J<0.0007 <0.0007 <0.0007 <0.0006 <0.0007 <0.0007 <0.0008 <0.0007 <0.0007NANA7805,100----Toluene0.004 J 0.013<0.0009 <0.0008 <0.0008 <0.0008 <0.0008 <0.0008 <0.001 <0.0008 <0.0008NANA9909,700----1,2,4-Trimethylbenzene0.003 J 0.009<0.0007 <0.0006 <0.0006 <0.0006 <0.0006 <0.0006 <0.0008 <0.0006 <0.0006NANA63370----1,3,5-Trimethylbenzene0.0009 J 0.001 J<0.0007 <0.0007 <0.0007 <0.0006 <0.0007 <0.0007 <0.0008 <0.0007 <0.0007NANA56320----o-Xylene0.003 J 0.008<0.0007 <0.0006 <0.0006 <0.0006 <0.0006 <0.0006 <0.0008 <0.0006 <0.0006NANA140590----m,p-Xylene0.004 J 0.016<0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.002 <0.001 <0.001NANANSNS----Xylene (Total)0.007 J 0.024<0.0007 <0.0006 <0.0006 <0.0006 <0.0006 <0.0006 <0.0008 <0.0006 <0.0006NANA120530----SVOCs (8270E)Benzo(a)anthracene<0.191 <0.2050.272<0.175 <0.167 <0.166 <0.174 <0.175 <0.216 <0.174 <0.175 NA NA1.1 21-- --Benzo(a)pyrene<0.202 <0.2170.262<0.185 <0.177 <0.176 <0.184 <0.185 <0.228 <0.184 <0.185NANA0.112.1----Benzo(b)fluoranthene<0.201 <0.2150.444<0.183 <0.175 <0.175 <0.182 <0.183 <0.227 <0.182 <0.184NANA1.121----Benzo(g,h,i)perylene<0.187 <0.2010.207<0.171 <0.163 <0.163 <0.170 <0.171 <0.211 <0.170 <0.171NANANENE----Chrysene<0.195 <0.2100.287<0.178 <0.171 <0.170 <0.177 <0.178 <0.221 <0.177 <0.179NANA1102,100----Pyrene<0.184 <0.1980.438<0.168 <0.161 <0.160 <0.167 <0.168 <0.208 <0.167 <0.169NANA3604,500----Metals (6020B/7471B/7199)Arsenic1.920.8052.451.08 J3.703.051.581.06 J2.262.073.802.235.290.683.01.0 - 184.8Barium23.953.143.710976.938.119.917.557.657.682.478.832.23,10047,00050 - 1,000356Cadmium <0.0758 <0.08130.0798 J<0.06920.0837 J<0.0660 <0.0689 <0.0692 <0.0856 <0.06890.0710 J 0.195 J<0.0770142001.0 - 10 (3)4.3 (3)Chromium (total)26.26.9825.435.549.340.721.120.786.646.661.441.660.6NENE7.0 - 30065Chromium (VI)<0.24<0.29<0.27<0.26<0.25<0.24<0.24<0.263.4<0.26<0.25<0.24<0.280.316.5NSNSChromium (III)26.26.9825.435.549.340.721.120.783.246.661.441.660.623,000350,000NSNSLead8.6112.671.94.0835.117.37.135.864.5815.232.439.613.7400800ND - 5016Mercury0.0232 J<0.01780.0391 J<0.01510.149 0.0630 0.0348 J 0.0392<0.01870.0455 0.0433 0.0551 0.05914.7700.03 - 0.520.121Selenium<1.24<1.33<1.20<1.13<1.08<1.08<1.13<1.13<1.40<1.13<1.14<1.071.27 J781,200<0.1 - 0.80.42Silver<0.0565 <0.0606 <0.0545 <0.05160.0879 J<0.0492 <0.0513 <0.0516 <0.0638 <0.0513 <0.05170.0933 J<0.0574781,200ND - 5.0 (3)NSNotes:1) North Carolina Department of Environmental Quality (DEQ) Inactive Hazardous Sites Branch (IHSB) Preliminary Soil Remediation Goals (PSRGs) dated June 20212) Range and mean values of background metals for North Carolina soils taken from Elements in North American Soils by Dragun and Chekiri, 20053) Cd and Ag concentrations were taken from Southeastern and Conterminous U.S. Soils.Soil concentrations are reported in milligrams per kilogram (mg/kg).Compound concentrations are reported to the laboratory method detection limits.Chromium III is a calculated valueLaboratory analytical methods are shown in parentheses.With the exception of metals, only constituents detected in at least one sample are shown in the table above.Bold values exceed the Residential PSRGs. VOCs = volatile organic compounds; SVOCs = semi-volatile organic compounds; PCBs = polychlorinated biphenyls; ft bgs= feet below ground surfaceNA = not analyzed; NS = not specified; NE = not established; -- = not applicable; BDL = below the laboratory method detection limitJ = Compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated concentration.mg/kg0-510/20/2021SB-1Residential PSRGs (1)Industrial/ Commercial PSRGs (1)Regional Background Metals in Soil (2)SB-6/SB-DUP10/20/20217-9https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/Embrey (EMB)/EMB.002 South Boulevard Assembly/EMP/SG, Soil, Groundwater Data Tables (1.7.22)Table 1 (Page 1 of 1)Hart & Hickman, PC
Table 3Summary of Groundwater Analytical Data Simpson's Texaco ServiceCharlotte, North CarolinaBrownfields Project No. 25063-21-060 H&H Job No. EMB-002Sample IDTMW-2TMW-3TMW-4TMW-5Date10/22/202110/22/202110/22/202110/22/202110/22/202110/22/2021UnitsVOCs (8260D)Acetone<18.0 <18.0 <1.802.57 J 3.36 J 3.46 J6,000 4,500,00019,000,000Benzene19,10017,200<0.180<0.1804.14<0.1801.0 1.66.9n-Butylbenzene 22.9 22.7<0.185 <0.185 <0.185 <0.18570 NENEsec-Butylbenzene 14.6 15.1<0.200 <0.200 <0.200 <0.20070 NENEChloroform 45.744.84.900.465 J0.332 J0.249 J70 0.813.6Di-Isopropyl Ether (DIPE)25.0 J25.1 J<0.960<0.96021.02.07 J701,4005,9001,4-Dichlorobenzene2.17 J2.31 J<0.210<0.210<0.210<0.2106.0261101,2-Dichloroethane<1.50<1.50<0.150<0.1502.030.7790.402.29.8Ethanol<420<420<42.0151 J<42.0<42.0NENENEEthylbenzene4,0103,620<0.1700.302 J 0.770<0.170600 3.515n-Hexane110124<1.30<1.30<1.30<1.304002.08.32-Hexanone7.22 J9.03 J<0.380<0.380<0.380<0.380NE1,6006,900Isopropylbenzene98.598.7<0.180<0.180<0.180<0.180701807504-Isopropyl toluene6.137.60<0.089<0.089<0.089<0.089NENENEMethyl tert-butyl ether (MTBE)12312716.42.0543699.7204502,0004-Methyl-2-Pentanone15.3 J15.6 J<1.00<1.00<1.00<1.00NE110,000470,000Methylene Chloride10.59.93 J<0.330<0.330<0.330<0.3305.09404,000Naphthalene1,2501,340<0.470<0.470<0.470<0.4706.04.620n-Propylbenzene310309<0.190<0.190<0.190<0.190704902,000Styrene59.959.3<0.220<0.220<0.220<0.220701,9007,800Toluene3,7603,4200.533<0.2201.25<0.2206003,80016,0001,3,5-Trimethylbenzene628615<0.1800.228 J<0.180 <0.180400 35150o-Xylene4,6804,190<0.2100.276 J 0.866<0.210500 98410m,p-Xylene13,40012,400<0.4200.999 J 1.93<0.420500 NENEXylene (Total)18,10016,600<0.2101.28 J 2.80<0.210500 77320SVOCs (8270E)1-Methylnaphthalene52.8 48.9<7.48 <8.06 <8.21 <8.431* NENE2-Methylnaphthalene107 99.6<7.06 <7.61 <7.75 <7.9630 NENENaphthalene584553<0.470<0.470<0.470<0.47064.620Phenol5.67 J<2.95<2.92<3.15<3.20<3.293035150Metals (6020B/7470A)Arsenic0.581 J0.665<0.170<0.1700.353 J0.197 J10----Barium 85.8 84.2 52.1 54.4 110 100 700----Cadmium<0.160 <0.160 <0.160 <0.160 <0.160 <0.1602----Chromium (Total)<0.790 <0.7902.40 1.51 J 3.41 3.52 10----Lead<0.260 <0.260 <0.2600.827 J 4.76 0.708 J 15----Mercury<0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.000071 0.180.75Selenium 1.35 J 1.50<0.740 <0.740 <0.740 <0.74020----Silver<0.110 <0.110 <0.110 <0.110 <0.110 <0.11020----Notes:1) North Carolina Department of Environmental Quality (DEQ) 15A NCAC 02L.0202 Groundwater Standards (2L Standards) dated April 20132) NC DEQ Division of Waste Management (DWM) Vapor Intrusion Groundwater Screening Levels (GWSLs) dated January 2021*2L Standard not established. The North Carolina Interium Maximum Allowable Concentration (IMAC) is used. Concentrations are reported in micrograms per liter (µg/L).Compound concentrations are reported to the laboratory method detection limits.Laboratory analytical methods are shown in parentheses.With the exception of metals, only constituents detected in at least one sample are shown in the table above.Bold values exceed the 2L Standard.Underlined values exceed the DWM Residential GWSLs. Shaded values exceed the DWM Non-Residential GWSLs. VOCs = volatile organic compounds; SVOCs = semi-volatile organic compunds; NE = not established; -- = not applicable; BDL = below laboratory method detection limit J = Compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated concentration.µg/L2L Standards (1) Residential GWSLs (2)Non-Residential GWSLs (2)TMW-1/TMW-DUPhttps://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/Embrey (EMB)/EMB.002 South Boulevard Assembly/EMP/SG, Soil, Groundwater Data Tables (1.7.22)1/14/2022Table 3 (Page 1 of 1) Hart & Hickman, PC
Table 4Summary of Soil Gas Analytical Data Simpson's Texaco Service Charlotte, North Carolina Brownfields Project No. 25063-21-060 H&H Job No. EMB-002Sample IDSG-2 SG-3 SG-4 SG-5 SG-6 SG-7 SG-8 SG-9 SG-10 SG-11 SG-12Date10/25/2021 10/25/2021 10/25/2021 10/25/2021 10/25/2021 10/25/2021 10/25/2021 10/25/2021 10/25/2021 10/25/2021 10/25/2021UnitsVOCs (TO-15)Acetone<4.04 <4.04308 62.1 54.3 134 35.3 49.0 257 112<4.0452.4 102 220,000 2,700,000Benzene1,4201,4003.072.39 1.19 J 5.3639.922.610.132.927.221.823.212160Bromomethane<2.30 <2.30<0.115<0.115 <0.115 <0.11519.9<0.115 <0.115 <0.115 <0.115 <0.115 <0.11535440Carbon Disulfide<1.22 <1.2291.038.5 1.94 J1725113603132623083362344,90061,000Carbon Tetrachloride<3.10 <3.10<0.155<0.155 <0.155 <0.1552.08 J 1.57 J<0.155 <0.155 <0.1551.86 J<0.15516200Chloroform<1.73 <1.73<0.0864<0.0864 <0.0864 <0.0864 <0.08641.41 J<0.0864 <0.0864 <0.08641.41 J<0.08644.150Chloromethane<1.34 <1.340.570 J 0.663 J 0.719 J<0.06732.00 0.524 J<0.0673 <0.0673 <0.0673 <0.0673 <0.06736307,900Cyclohexane5987894.24 2.50 J<0.16123.611.320.848.324023719.020942,000530,000Dichlorodifluoromethane<2.68 <2.683.103.232.935.843.072.59<0.134 <0.134 <0.134 <0.134 <0.1347008,800Ethyl Acetate<2.72 <2.72<0.136<0.1361.03 J<0.136 <0.136 <0.136 <0.136 <0.136 <0.136 <0.136 <0.1364906,100Ethylbenzene10.2 J 9.99 J 1.98 J 1.54 J 0.643 J<0.1065.716.14<0.1068.688.265.537.37374904-Ethyltoluene<2.56 <2.562.31 J<0.128 <0.128 <0.1281.22 J 1.48 J<0.1282.14 J 1.92 J 1.34 J 1.76 JNENE1,1,2-Trichloro-1,2,2-trifluoroethane<11.2 <11.21.02 J 0.797 J<0.561 <0.5610.881 J<0.561 <0.561 <0.561 <0.561 <0.561 <0.56135,000440,000Heptane<2.86 <2.8611.87.752.9030.949.247.261.313012041.81002,80035,000n-Hexane105099315394.42.8372.215294.412635633294.82784,90061,0002-Hexanone<5.71 <5.71<0.285<0.2854.34<0.285 <0.285 <0.285 <0.285 <0.285 <0.285 <0.285 <0.2852102,600Isopropyl Alcohol<2.78 <2.784.56 J, B 5.96 B 3.90 J, B 6.96 B 2.91 J, B 2.75 J, B 9.20<0.139 <0.1392.85 J, B<0.1391,40018,000Methyl Ethyl Ketone (MEK)<4.48 <4.4813.86.183.3950.810.320.011368.564.417.554.435,000440,0004-Methyl-2-Pentanone<2.42 <2.424.103.893.684.715.858.975.789.638.487.547.7621,000260,000Methylene Chloride<9.75 <9.75<0.4892.102.53<0.489 <0.489 <0.489 <0.489 <0.489 <0.489 <0.489 <0.4893,40053,000Naphthalene<3.66<3.66<0.1833.07 B1.87 J, B 2.06 J, B 2.03 J, B<0.1832.32 J, B<0.1833.00 B<0.1832.97 B336Propene25825785.856.9<0.242120239764173<4.84 <4.84634<4.8421,000 260,000Styrene<2.48 <2.480.422 J<0.124 <0.124 <0.1241.37 J 1.92 J<0.1240.545 J 0.481 J 1.70 J<0.1247,000 88,000Tetrachloroethene<3.62 <3.621.38 J 0.780 J<0.181 <0.18111.7 13.5<0.1814.43 4.87 13.3 4.44 280 3,500Tetrahydrofuran<2.14 <2.147.63<0.107 <0.1079.53<0.107 <0.10718.6<0.107 <0.107 <0.107 <0.10714,000 180,000Toluene<1.80 <1.809.35 7.91 4.81 4.89 34.2 30.1 7.39 45.8 44.3 28.9 37.5 35,000 440,000Trichloroethene<3.98 <3.98<0.199<0.199 <0.199 <0.1991.96 J<0.199 <0.199 <0.199 <0.199 <0.199 <0.19914 180Trichlorofluoromethane<2.60 <2.602.21 J 2.20 J 1.92 J 6.10 2.07 J<0.130 <0.130 <0.130 <0.130 <0.130 <0.130NE NE1,2,4-Trimethylbenzene<2.20 <2.209.54 1.44 J 0.796 J<0.1103.24 3.68<0.1107.05 6.40 3.12 5.93 420 5,3001,3,5-Trimethylbenzene<4.72 <4.722.93 0.605 J<0.236 <0.2361.38 J 0.993 J<0.2365.73 5.63 0.944 J 5.22 420 5,300Vinyl Chloride<2.54<2.54<0.127<0.127 <0.127 <0.1271.72 0.969 J<0.127 <0.127 <0.1270.849 J<0.1275.6280Xylene (Total)30.4 J 29.2 J 8.03 J 6.04 J 2.92 J<0.15723.4 22.4<0.15724.4 22.9 19.7 20.6 700 8,800DEQ Cumulative Risk Calculator(2)LICR (Residential use worst-case)Non-Carcinogenic HI (Residential use worst-case)Notes:1) NC Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Vapor Intrusion Sub-slab and ExteriorSoil Gas Screening Levels (SGSLs) dated June 2021 and based upon TCR = 1 x 10-6 and THQ = 0.2.2) NC DEQ DWM Cumulative Risk Calculator dated June 2021.Compound concentrations are reported in micrograms per cubic meter (μg/m3)Compound concentrations are reported to the laboratory method detection limits.Only those compounds detected in at least one sample are shown in the table above.Laboratory analytical method shown in parentheses.Bold indicates compound concentration exceeds Residential SGSLs.Bold Underline indicates compound concentration exceeds Non-Residenital SGSLVOCs = Volatile Organic Compounds; NE = Not Established.LICR = Lifetime Incremental Cancer Risk; HI = Hazard Index.Cumulative LICR and HI calculated using the residential worst-case scenario and compared to DEQ and EPA acceptable carcinogenic and non carcinogenic risk levels.J = Compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated concentration, B = Analyte detected in blankAcceptable Risk Levels<1 x 10-4<1.0Non-Residential SGSLs (1)µg/m3SG-1 / SG-DUP1.2 x 10-41.7Residential SGSLs (1)10/25/2021https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/Embrey (EMB)/EMB.002 South Boulevard Assembly/EMP/SG, Soil, Groundwater Data Tables (1.7.22)1/14/2022Table 4 (Page 1 of 1) Hart & Hickman, PC
FORMER
DISPENSER
ISLANDS
FORMER UST BASIN
FORMER UST
BASIN
WASTE OIL
TANK COVER
ABANDONED
IN-GROUND LIFT
SB-6
SB-7
AUTO REPAIR WASTE
STORAGE AREA
SB-5
SB-4 SB-3
SB-2
COMP-2
COMP-1
SB-1
BKG-1
BKG-2
OX-2
OX-3 ESW
OX-3 05/16/18
DEPTH 12
BENZENE 1.34
ETHYLBENZENE 87.40
NAPHTHALENE 29.30
XYLENE (TOTAL)464
REVISION NO. 0
JOB NO. EMB-002
DATE: 1-24-22
FIGURE NO. 2
SIMPSON'S TEXACO SERVICE
SOUTH BOULEVARD & SCALEYBARK ROAD
CHARLOTTE, NORTH CAROLINA
SOIL SAMPLE LOCATION MAP
LEGEND
BROWNFIELDS PROPERTY BOUNDARY
PARCEL BOUNDARY
PROPOSED BUILDING FOOTPRINT
PROPOSED PARKING GARAGE FOOTPRINT
SOIL SAMPLE LOCATION
ALIQUOT SOIL BORING LOCATION
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 Geology
NOTES:
1. ONLY CONCENTRATIONS DETECTED ABOVE PSRGs
SHOWN.
2. SAMPLES OX-2, OX-3, AND ESW COLLECTED BY ATC.
3. J = COMPOUND WAS DETECTED ABOVE THE
LABORATORY METHOD DETECTION LIMIT, BUT BELOW
THE LABORATORY REPORTING LIMIT RESULTING IN A
LABORATORY ESTIMATED CONCENTRATION.
4. BOLD VALUES EXCEED THE RESIDENTIAL PSRGs.
5.BOLD & UNDERLINE VALUES EXCEED THE INDUSTRIAL/
COMMERCIAL PSRGs.
6. PROPOSED REDEVELOPMENT PLAN OVERLAID FROM
THE PRELIMINARY DESIGN PROVIDED BY CLINE DESIGN.
7. mg/kg = MILLIGRAMS PER KILOGRAM
UST = UNDERGROUND STORAGE TANK
SC
A
L
E
Y
B
A
R
K

R
O
A
D
SOUTH BOULEVARDOLD PINEVILLE ROADCONCENTRATION
(mg/kg)
SAMPLE ID
CONSTITUENT
SAMPLE DATE
SAMPLE DEPTH (FT)
SB-1 10/20/21
NO EXCEEDANCES 2-4 8-10
SB-4 10/22/21
NO EXCEEDANCES 3-5
SB-5 10/22/21
NO EXCEEDANCES 1-3
SB-3 10/21/21
NO EXCEEDANCES 2-4
SB-6 10/20/21
NO EXCEEDANCES 7-9
BKG-2 10/20/21
NO EXCEEDANCES 3-5
BKG-1 10/20/21
NO EXCEEDANCES 1-3
COMP-2 10/22/21
NO EXCEEDANCES 0-5
COMP-1 10/22/21
NO EXCEEDANCES 0-5
ESW 05/16/18
DEPTH 6
NAPHTHALENE 4.29 J
OX-3 05/16/18
DEPTH 12
BENZENE 1.34
ETHYLBENZENE 87.40
NAPHTHALENE 29.30
XYLENE (TOTAL)464
OX-2 05/16/18
DEPTH 16
ETHYLBENZENE 7.06
NAPHTHALENE 3.33 J
SB-2 10/21/21
DEPTH 2-4
BENZO(A)PYRENE 0.262
SB-7 10/21/21
DEPTH 11-13
CHROMIUM (VI)3.4
S:\AAA-Master Projects\Embrey (EMB)\EMB.002 South Boulevard Assembly\EMP\Figures\Sample Location Map.dwg, FIG 2, 1/24/2022 8:11:37 AM, sperry
FORMER
DISPENSER
ISLANDS
FORMER UST BASIN
FORMER UST
BASIN
WASTE OIL
TANK COVER
ABANDONED
IN-GROUND LIFT
TMW-5
TMW-4
AUTO REPAIR WASTE
STORAGE AREA
TMW-3
TMW-2
TMW-1
GW-03
GW-02
GW-06
GW-01
GW-04D
GW-05
TMW-1/TMW-DUP 10/22/21
BENZENE 19,100
ETHYLBENZENE 4,010
ISOPROPYLBENZENE 98.7
METHYL TERT-BUTYL ETHER (MTBE)127
METHYLENE CHLORIDE 10.5
NAPHTHALENE 1,340
N-PROPYLBENZENE 310
TOLUENE 3,760
1,3,5-TRIMETHYLBENZENE 628
XYLENE (TOTAL)18,100
1-METHYLNAPHTHALENE 52.8
2-METHYLNAPHTHALENE 107
REVISION NO. 0
JOB NO. EMB-002
DATE: 1-24-22
FIGURE NO. 3A
SIMPSON'S TEXACO SERVICE
SOUTH BOULEVARD & SCALEYBARK ROAD
CHARLOTTE, NORTH CAROLINA
GROUNDWATER QUALITY SAMPLE
LOCATION MAP
LEGEND
BROWNFIELDS PROPERTY BOUNDARY
PARCEL BOUNDARY
PROPOSED BUILDING FOOTPRINT
PROPOSED PARKING GARAGE FOOTPRINT
TEMPORARY MONITORING WELL LOCATION
ABANDONED MONITORING WELL LOCATION
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 Geology
NOTES:
1.
2.
3.
ONLY CONCENTRATIONS DETECTED ABOVE DEQ 2L
STANDARDS OR IMACS SHOWN.
SAMPLES GW-01, GW-02, GW-03, GW-04D, GW-05, AND
GW-06 COLLECTED BY ATC.
J = COMPOUND WAS DETECTED ABOVE THE
LABORATORY METHOD DETECTION LIMIT, BUT BELOW
THE LABORATORY REPORTING LIMIT RESULTING IN A
LABORATORY ESTIMATED CONCENTRATION.
4.μg/L = MICROGRAMS PER LITER
UST = UNDERGROUND STORAGE TANK
CONCENTRATION
(μg/L)
SAMPLE ID
CONSTITUENT
SAMPLE DATE
TMW-1/TMW-DUP 10/22/21
BENZENE 19,100
ETHYLBENZENE 4,010
ISOPROPYLBENZENE 98.7
METHYL TERT-BUTYL ETHER (MTBE)127
METHYLENE CHLORIDE 10.5
NAPHTHALENE 1,340
N-PROPYLBENZENE 310
TOLUENE 3,760
1,3,5-TRIMETHYLBENZENE 628
XYLENE (TOTAL)18,100
1-METHYLNAPHTHALENE 52.8
2-METHYLNAPHTHALENE 107
TMW-2 10/22/21
NO EXCEEDANCES
TMW-3 10/22/21
NO EXCEEDANCES
TMW-5 10/22/21
1,2-DICHLOROETHANE 0.779
METHYL TERT-BUTYL ETHER (MTBE)99.7
TMW-4 10/22/21
BENZENE 4.14
1,2-DICHLOROETHANE 2.03
METHYL TERT-BUTYL ETHER (MTBE)436
GW-01 01/23/14
BENZENE 820
1,2-DIBROMOETHANE 0.02 J
1,2-DICHLOROETHANE 3.6 J
NAPHTHALENE 14
LEAD 23
GW-02 01/23/14
BENZENE 110
1,2-DICHLOROETHANE 4.6
METHYL TERT-BUTYL ETHER (MTBE)36
GW-03 01/23/14
BENZENE 46
N-PROPYLBENZENE 110
NAPHTHALENE 160
1,2,4-TRIMETHYLBENZENE 650
XYLENE (TOTAL)1,190
GW-04D 05/23/07
BENZENE 58
METHYL TERT-BUTYL ETHER (MTBE)350
GW-05 01/23/14
BENZENE 4,400
1,2-DIBROMOETHANE 0.051
1,2-DICHLOROETHANE 26
LEAD 30
METHYL TERT-BUTYL ETHER (MTBE)820
NAPHTHALENE 280
GW-06 01/23/14
BENZENE 4,400
N-BUTYLBENZENE 91
1,2-DIBROMOETHANE 0.14
1,2-DICHLOROETHANE 100 J
ETHYLBENZENE 3,400
ISOPROPYLBENZENE 120 J
LEAD 29.2 J
METHYL TERT-BUTYL ETHER (MTBE)1,700
NAPHTHALENE 1,500
N-PROPYLBENZENE 430
TOLUENE 12,000
1,2,4-TRIMETHYLBENZENE 4,200
1,3,5-TRIMETHYLBENZENE 1,100
XYLENE (TOTAL)19,000
SC
A
L
E
Y
B
A
R
K

R
O
A
D
SOUTH BOULEVARDOLD PINEVILLE ROADS:\AAA-Master Projects\Embrey (EMB)\EMB.002 South Boulevard Assembly\EMP\Figures\Sample Location Map.dwg, FIG 3A, 1/24/2022 8:11:49 AM, sperry
FORMER
DISPENSER
ISLANDS
FORMER UST BASIN
FORMER UST
BASIN
WASTE OIL
TANK COVER
ABANDONED
IN-GROUND LIFT
TMW-5
TMW-4
AUTO REPAIR WASTE
STORAGE AREA
TMW-3
TMW-2
TMW-1
GW-03
GW-02
GW-06
GW-01
GW-04D
GW-05
TMW-1 10/22/21
BENZENE 19,100
CHLOROFORM 45.7
ETHYLBENZENE 4,010
N-HEXANE 124
NAPHTHALENE 1,340
1,3,5-TRIMETHYLBENZENE 628
XYLENE (TOTAL)18,100
REVISION NO. 0
JOB NO. EMB-002
DATE: 1-24-22
FIGURE NO. 3B
SIMPSON'S TEXACO SERVICE
SOUTH BOULEVARD & SCALEYBARK ROAD
CHARLOTTE, NORTH CAROLINA
GROUNDWATER VISL SAMPLE
LOCATION MAP
LEGEND
BROWNFIELDS PROPERTY BOUNDARY
PARCEL BOUNDARY
PROPOSED BUILDING FOOTPRINT
PROPOSED PARKING GARAGE FOOTPRINT
TEMPORARY MONITORING WELL LOCATION
ABANDONED MONITORING WELL LOCATION
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 Geology
NOTES:
1.
2.
3.
ONLY CONCENTRATIONS DETECTED ABOVE DWM
GWSLs SHOWN.
SAMPLES GW-01, GW-02, GW-03, GW-04D, GW-05, AND
GW-06 COLLECTED BY ATC.
J = COMPOUND WAS DETECTED ABOVE THE
LABORATORY METHOD DETECTION LIMIT, BUT BELOW
THE LABORATORY REPORTING LIMIT RESULTING IN A
LABORATORY ESTIMATED CONCENTRATION.
4. BOLD VALUES EXCEED THE RESIDENTIAL GWSLs.
5.BOLD & UNDERLINE VALUES EXCEED THE NON-
RESIDENTIAL GWSLs.
3. μg/L = MICROGRAMS PER LITER
VISL = VAPOR INTRUSION SCREENING LEVEL
UST = UNDERGROUND STORAGE TANK
GWSLs = GROUNDWATER SCREENING LEVELS
TMW-2 10/22/21
CHLOROFORM 4.9
TMW-3 10/22/21
NO EXCEEDANCES
TMW-5 10/22/21
NO EXCEEDANCES
TMW-4 10/22/21
BENZENE 4.14
GW-04D 05/23/07
BENZENE 58
SAMPLE ID SAMPLE DATE
CONCENTRATION
(μg/L)CONSTITUENT
TMW-1 10/22/21
BENZENE 19,100
CHLOROFORM 45.7
ETHYLBENZENE 4,010
N-HEXANE 124
NAPHTHALENE 1,340
1,3,5-TRIMETHYLBENZENE 628
XYLENE (TOTAL)18,100
GW-01 01/23/14
BENZENE 820
CHLOROFORM 4.3 J
1,2-DICHLOROETHANE 3.6 J
ETHYLBENZENE 23
NAPHTHALENE 14
1,2,4-TRIMETHYLBENZENE 76
XYLENE (TOTAL)78
GW-02 01/23/14
BENZENE 110
CHLOROFORM 5.1
1,2-DICHLOROETHANE 4.6
ETHYLBENZENE 9.0
GW-03 01/23/14
BENZENE 46
CHLOROFORM 11
ETHYLBENZENE 260
NAPHTHALENE 160
1,2,4-TRIMETHYLBENZENE 650
1,3,5-TRIMETHYLBENZENE 230
XYLENE (TOTAL)1,190
GW-05 01/23/14
BENZENE 4,400
1,2-DICHLOROETHANE 26
ETHYLBENZENE 98
METHYL TERT-BUTYL ETHER (MTBE)820
NAPHTHALENE 280
XYLENE (TOTAL)290
GW-06 01/23/14
BENZENE 4,400
CHLOROFORM 61 J
1,2-DICHLOROETHANE 100 J
ETHYLBENZENE 3,400
METHYL TERT-BUTYL ETHER (MTBE)1,700
NAPHTHALENE 1,500
TOLUENE 12,000
1,2,4-TRIMETHYLBENZENE 4,200
1,3,5-TRIMETHYLBENZENE 1,100
XYLENE (TOTAL)19,000
SC
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SOUTH BOULEVARDOLD PINEVILLE ROADS:\AAA-Master Projects\Embrey (EMB)\EMB.002 South Boulevard Assembly\EMP\Figures\Sample Location Map.dwg, FIG 3B, 1/24/2022 8:11:59 AM, sperry
FORMER
DISPENSER
ISLANDS
FORMER UST BASIN
FORMER UST
BASIN
WASTE OIL
TANK COVER
ABANDONED
IN-GROUND LIFT
AUTO REPAIR WASTE
STORAGE AREA
SG-1
SG-2
SG-3
SG-4
SG-5
SG-6
SG-7
SG-8
SG-9
SG-10
SG-11
SG-12
REVISION NO. 0
JOB NO. EMB-002
DATE: 1-24-22
FIGURE NO. 4
SIMPSON'S TEXACO SERVICE
SOUTH BOULEVARD & SCALEYBARK ROAD
CHARLOTTE, NORTH CAROLINA
SOIL GAS SAMPLE LOCATION MAP
LEGEND
BROWNFIELDS PROPERTY BOUNDARY
PARCEL BOUNDARY
PROPOSED BUILDING FOOTPRINT
PROPOSED PARKING GARAGE FOOTPRINT
SOIL GAS SAMPLE LOCATION
SAMPLE ID SAMPLE DATE
CONCENTRATION
(µg/m3)CONSTITUENT
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.ONLY COMPOUNDS DETECTED ABOVE DWM SGSLs IN
AT LEAST ONE SAMPLE SHOWN.
2.J = COMPOUND WAS DETECTED ABOVE THE
LABORATORY METHOD DETECTION LIMIT, BUT BELOW
THE LABORATORY REPORTING LIMIT RESULTING IN A
LABORATORY ESTIMATED CONCENTRATION.
B = ANALYTE DETECTED IN BLANK
3.BOLD VALUES EXCEED THE RESIDENTIAL SGSLs.
4.BOLD UNDERLINED VALUES EXCEED THE NON-
RESIDENTIAL SGSLs.
5.µg/m3 = MICROGRAMS PER CUBIC METER
SGSLs = SOIL GAS SCREENING LEVELS
UST = UNDERGROUND STORAGE TANK
SG-11 10/25/21
DEPTH (FT)11.5-12
BENZENE 21.8
NAPHTHALENE <0.183
SAMPLE
DEPTH (FT)
SG-11 10/25/21
DEPTH (FT)11.5-12
BENZENE 21.8
NAPHTHALENE <0.183
SG-7 10/25/21
DEPTH (FT)8.5-9
BENZENE 22.6
NAPHTHALENE <0.183
SG-12 10/25/21
DEPTH (FT)6.5-7
BENZENE 23.2
NAPHTHALENE 2.97 B
SG-10 10/25/21
DEPTH (FT)7.5-8
BENZENE 27.2
NAPHTHALENE 3.00 B
SG-9 10/25/21
DEPTH (FT)5-5.5
BENZENE 32.9
NAPHTHALENE <0.183
SG-4 10/25/21
DEPTH (FT)5-5.5
BENZENE 1.19 J
NAPHTHALENE 1.87 J,B
SG-3 10/25/21
DEPTH (FT)5-5.5
BENZENE 2.39
NAPHTHALENE 3.07 B
SG-2 10/25/21
DEPTH (FT)5-5.5
BENZENE 3.07
NAPHTHALENE <0.183
SG-1 10/25/21
DEPTH (FT)5-5.5
BENZENE 1,420
NAPHTHALENE <3.66
SG-8 10/25/21
DEPTH (FT)5-5.5
BENZENE 10.1
NAPHTHALENE 2.32 J,B
SG-5 10/25/21
DEPTH (FT)5-5.5
BENZENE 5.36
NAPHTHALENE 2.06 J,B
SG-6 10/25/21
DEPTH (FT)6.5-7
BENZENE 39.9
NAPHTHALENE 2.03 J,B
SC
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SOUTH BOULEVARDOLD PINEVILLE ROADS:\AAA-Master Projects\Embrey (EMB)\EMB.002 South Boulevard Assembly\EMP\Figures\Sample Location Map.dwg, FIG 4, 1/24/2022 8:16:11 AM, sperry

Attachment B

Vapor Intrusion Mitigation Design Drawings
Sheets VM-1, VM-2, VM-2A, VM-3, VM-4, VM-5, and VM-6
H&H NO. EMB-002
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
SPECIFICATIONSLOSO EPL4001 SOUTH BOULEVARDCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 25063-21-060DEVELOPER:
EMBREY PARTNERS
1020 NE INTERSTATE 410
LOOP #700
SAN ANTONIO, TEXAS
VM-1
PROFESSIONAL
APPROVAL
NOTES:
VIMS = VAPOR INTRUSION MITIGATION SYSTEM
TYP = TYPICAL
SCH = SCHEDULE
PVC = POLYVINYL CHLORIDE
NTS = NOT TO SCALE
MIL = THOUSANDS OF AN INCH
SOG = SLAB-ON-GRADE
ALL PIPE MEASUREMENTS ARE BY DIAMETER
VAPOR INTRUSION MITIGATION SYSTEM (VIMS) SPECIFICATIONS
1.THIS VAPOR MITIGATION PLAN IS INTENDED TO BE USED FOR DIRECTION OF VIMS COMPONENT INSTALLATION ONLY AND IS NOT INTENDED TO GUIDE CONSTRUCTION OF BUILDING STRUCTURAL COMPONENTS. CONSTRUCTION CONTRACTOR SHALL VERIFY CONSISTENCY OF VIMS DETAILS WITH
APPLICABLE STRUCTURAL, ARCHITECTURAL, MECHANICAL, & PLUMBING PLANS AND RESOLVE ANY INCONSISTENCIES PRIOR TO VIMS INSTALLATION.
2.VIMS VAPOR BARRIER (LINER) SHALL BE VAPORBLOCK PLUS 20 (VBP20) 20-MIL VAPOR LINER MANUFACTURED BY RAVEN INDUSTRIES (RAVEN). AS AN ALTERNATIVE, DRAGO WRAP 20-MIL VAPOR INTRUSION BARRIER MANUFACTURED BY STEGO INDUSTRIES, LLC (STEGO) CAN BE USED, PENDING
APPROVAL BY THE ENGINEER.
THE VAPOR LINER SHALL BE INSTALLED AS SPECIFIED HEREIN AND PER MANUFACTURER INSTALLATION INSTRUCTIONS TO CREATE A CONTINUOUS LINER BELOW MITIGATED AREAS, AND ALONG RETAINING WALLS AND SLAB-ON-GRADE FOLDS WITHIN THE EXTENT OF VAPOR LINER BOUNDARY. A
MINIMUM 5-INCH THICK BASE COURSE CONSISTING OF CLEAN #57 STONE (WASHED WITH NO FINES) SHALL BE INSTALLED BENEATH THE VIMS VAPOR LINER. A SIMILAR HIGH PERMEABILITY STONE MAY BE USED, PENDING APPROVAL BY THE ENGINEER.
2.1.THE VAPOR LINER SHALL BE PROPERLY SEALED IN ACCORDANCE WITH THE MANUFACTURER INSTALLATION INSTRUCTIONS AS SPECIFIED IN THESE DRAWINGS TO FOOTERS, SLAB STEPS, RETAINING WALLS, PENETRATIONS (SUCH AS PIPE PENETRATIONS), OR OTHER BUILDING COMPONENTS
WITHIN THE VIMS EXTENTS. VAPOR LINER SHALL BE INSTALLED UNDER CMU WALLS WHICH SUPPORT OCCUPIED ENCLOSED SPACES.
2.2.VAPOR BARRIER SHALL BE INSTALLED UNDER SLABS, ON WALLS, AND ALONG OTHER STRUCTURAL COMPONENTS WHICH COME IN CONTACT WITH BOTH AN OCCUPIABLE ENCLOSED SPACE AND SOIL. NOT ALL AREAS FOR THE VAPOR BARRIER MAY BE DEPICTED ON THE DRAWINGS. THE
GENERAL CONTRACTOR SHALL VERIFY ALL REQUIRED LOCATIONS FOR VAPOR BARRIER ALONG VERTICAL WALLS PRIOR TO CONSTRUCTION.
2.3.ALL CONCRETE BOX-OUTS, INCLUDING BUT NOT LIMITED TO SHOWER/BATH TUB DRAINS, SHALL HAVE A CONTINUOUS VAPOR BARRIER INSTALLED BELOW.
2.4.VAPOR BARRIER SHALL EXTEND ALONG FOOTING EXTERIOR, IF POSSIBLE, AT LOCATIONS WHERE EXTERIOR GRADE IS HIGHER THAN INTERIOR GRADE.
2.5.IN AREAS WITH EXPANSION BOARDS (E.G. ALONG COLUMNS), THE VAPOR BARRIER MUST BE SEALED DIRECTLY TO THE CONCRETE WITH THE EXPANSION BOARD BE INSTALLED OVER THE VAPOR BARRIER.
2.6.THE INTERFACE OF THE STEEL COLUMNS (IF PRESENT) AND THE CONCRETE SLAB SHALL BE SEALED WITH A SELF-LEVELING POLYURETHANE SEALANT PER DIRECTION OF THE ENGINEER OR ENGINEER'S DESIGNEE. SIMILAR SEALANT PRODUCTS MAY BE APPROVED BY THE ENGINEER.
3.SUB-SLAB SLOTTED VAPOR COLLECTION PIPE SHALL BE 3" SCH 40 PVC PIPE WITH 0.020" TO 0.060" SLOT WIDTH AND 1/8" SLOT SPACING. AN ALTERNATE SLOT PATTERN, OR SCH 40 PVC PERFORATED PIPE WITH 5/8" OR SMALLER DIAMETER PERFORATIONS, OR SOIL GAS COLLECTOR MAT (1" X 12"),
WITH SIMILAR AIR FLOW CHARACTERISTICS TO THE SLOTTED PIPE MAY BE USED PENDING APPROVAL BY THE DESIGN ENGINEER. IF CIRCULAR PIPE IS USED, A PVC TERMINATION SCREEN (WALRICH CORPORATION #2202052, OR SIMILAR) SHOULD BE INSTALLED ON THE END OF PIPE.
3.1.SLOTTED COLLECTION PIPING SHALL BE SET WITHIN THE MINIMUM 5” BASE COURSE LAYER, WITH APPROXIMATELY 1” OF BASE COURSE MATERIAL BELOW THE PIPING.
3.2.SOIL GAS COLLECTOR MAT (IF INSTALLED) SHALL NOT BE USED THROUGH A CONCRETE FOOTING. SCH 40 PVC PIPE (3" DIA) SHALL BE USED FOR ALL SUB-SLAB VENT PIPE CROSSINGS THROUGH FOOTINGS. IF SOIL GAS COLLECTOR MAT IS USED, MANUFACTURER APPROVED FITTINGS SHALL BE
UTILIZED TO CONNECT THE SOIL GAS COLLECTOR MAT TO PVC PIPING FOR CROSSINGS THROUGH FOOTINGS.
4.4" SCH 40 PVC RISER DUCT PIPING SHALL BE INSTALLED TO CONNECT EACH SLAB PENETRATION LOCATION TO A ROOFTOP EXHAUST DISCHARGE POINT WITH VENTILATOR (SEE SPECIFICATION #5). ABOVE-SLAB RISER DUCT PIPE THAT RUNS BETWEEN THE SLAB PENETRATION AND THE ROOFTOP
EXHAUST DISCHARGE SHALL BE INSTALLED PER APPLICABLE BUILDING CODE AND AS SPECIFIED IN THE CONSTRUCTION DOCUMENTS AND DRAWINGS.
4.1.VERTICAL RISER PIPING SHALL BE CONNECTED WITH PVC PRIMER AND GLUE.
4.2.VERTICAL RISER PIPING MUST BE INSTALLED PER 2018 NORTH CAROLINA STATE PLUMBING CODE.
4.3.VIMS BELOW AND ABOVE GRADE SOLID PIPING SHALL NOT BE TRAPPED AND SHALL BE SLOPED A MINIMUM OF 1/8 UNIT VERTICAL BY 12 UNITS HORIZONTAL (1% SLOPE) TO GRAVITY DRAIN. BENDS, TURNS, AND ELBOWS IN VERTICAL RISER PIPES SHALL BE MINIMIZED FROM THE SLAB TO THE
ROOFTOP.
5.THE RISER DUCT PIPING SHALL EXTEND IN A VERTICAL ORIENTATION THROUGH THE BUILDING ROOF AND TERMINATE A MINIMUM OF 2 FT ABOVE THE BUILDING ROOF LINE. EMPIRE MODEL TV04SS VENTILATOR (OR ALTERNATE APPROVED BY DESIGN ENGINEER) SHALL BE INSTALLED ON THE
EXHAUST DISCHARGE END OF EACH RISER DUCT PIPE. THE RISER DUCT PIPE AND THE VENTILATOR SHALL BE SECURED TO THE PVC RISER IN A VERTICAL ORIENTATION.
5.1.EXHAUST DISCHARGE LOCATIONS SHALL BE A MINIMUM OF 10 FT FROM ANY OPERABLE OPENING OR AIR INTAKE INTO THE BUILDING. NOTE THAT DISCHARGE LOCATIONS ON THE ROOFTOP DEPICTED IN THE VAPOR MITIGATION PLAN MAY BE REPOSITIONED AS LONG AS THE NEW POSITION
MEETS THE REQUIREMENTS PRESENTED ABOVE, PENDING ENGINEER APPROVAL.
5.2.AN ELECTRICAL JUNCTION BOX (120VAC REQUIRED) FOR OUTDOOR USE SHALL BE INSTALLED NEAR THE PIPE DISCHARGE LOCATION ON THE ROOFTOP FOR POTENTIAL FUTURE CONVERSION TO ELECTRIC FANS, IF REQUIRED. ALL WIRING AND ELECTRICAL SHALL BE INSTALLED PER APPLICABLE
BUILDING AND ELECTRICAL CODES. IF ELECTRICAL FANS ARE REQUIRED IN THE FUTURE, FANS WILL NOT BE INSTALLED IN ATTIC SPACE.
6.ABOVE-SLAB ACCESSIBLE RISER DUCT PIPING SHALL BE PERMANENTLY IDENTIFIED BY MEANS OF A TAG OR STENCIL AT A MINIMUM OF ONCE EVERY 10-LINEAR FT WITH "VAPOR MITIGATION: CONTACT MAINTENANCE". LABELS SHALL ALSO BE FIXED NEAR THE VENTILATORS IN AN ACCESSIBLE
LOCATION ON THE ROOFTOP.
7.MONITORING POINTS SHALL CONSIST OF 2-INCH DIAMETER SCH 40 PVC PIPE WITH A 90-DEGREE ELBOW TO FORM AN “L” SHAPE. A MINIMUM OF 6” LENGTH OF PIPE AND MAXIMUM 6 FT LENGTH OF PIPE, OR OTHERWISE APPROVED BY THE DESIGN ENGINEER, SHALL BE SET WITHIN THE BASE
COURSE LAYER WITH AN OPEN ENDED PIPE OR PIPE PROTECTION SCREEN AT THE TERMINATION. THE PIPE TERMINATION SHALL BE ENCASED WITHIN THE BASE COURSE LAYER.
7.1.THE HORIZONTAL PIPING SHALL BE SLOPED A MINIMUM OF 1/8 UNIT VERTICAL BY 12 UNITS HORIZONTAL (1% SLOPE) TO GRAVITY DRAIN TOWARDS THE PIPE TERMINATION AND PREVENT MOISTURE FROM COLLECTING AT THE 90-DEGREE ELBOW.
7.2.THE MONITORING POINT INTAKE SHALL BE PLACED A MINIMUM OF 5-FT FROM EXTERIOR FOOTERS.
7.3.MONITORING POINTS LOCATED IN STAIRWELLS ARE INTENDED TO BE INSTALLED BELOW STAIRWELL LANDINGS AND MAY BE RE-POSITIONED TO PROVIDE SUITABLE ACCESS TO THE POINT PER APPROVAL OF THE DESIGN ENGINEER.
7.4.THE END OF THE PIPE SHALL CONTAIN A PVC TERMINATION SCREEN, OR HAVE A MINIMUM OF THREE 58" DIA HOLES DRILLED INTO A SOLID CAP, SHALL HAVE VENT SLOTS WITH MINIMUM 1 SQUARE INCH OF OPEN AREA. AN OPEN PIPE MAY USED PER APPROVAL OF THE DESIGN ENGINEER.
7.5.A 4-INCH DIAMETER ADJUSTABLE FLOOR CLEAN-OUT (ZURN INDUSTRIES MODEL #CO2450-PV4, OR EQUIVALENT) SHALL BE INSTALLED AND SET FLUSH WITH THE FINISHED CONCRETE SURFACE, OR THE MONITORING POINT SHALL BE PLACED BEHIND A WALL ACCESS PANEL PER THE DETAILS.
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 NON-MITIGATED AREAS.
10.CONSTRUCTION CONTRACTORS AND SUB-CONTRACTORS SHALL AVOID THE USE OF TEMPORARY FORM BOARDS THAT PENETRATE THE VAPOR LINER WHERE POSSIBLE. IF TEMPORARY FORM BOARDS ARE USED, THE SIZE AND NUMBER OF PENETRATIONS THROUGH THE VAPOR LINER SHALL BE
LIMITED AND SMALL DIAMETER SOLID STAKES (I.E. METAL STAKES) SHALL BE USED. IN ALL CASES, AS FORM BOARDS ARE REMOVED, THE CONTRACTOR OR SUB-CONTRACTORS SHALL RESEAL ALL PENETRATIONS IN ACCORDANCE WITH VAPOR LINER MANUFACTURER INSTALLATION INSTRUCTIONS.
10.1.HOLLOW FORMS OR CONDUITS THAT CONNECT THE SUB-SLAB ANNULAR SPACE TO ENCLOSED ABOVE SLAB SPACES SHALL NOT BE PERMITTED.
10.2.AREAS OF UTILITY BANKS (e.g. LOCATION OF THREE OR MORE ADJACENT UTILITIES THROUGH THE SLAB) SHALL BE SEALED TO CREATE AN AIR-TIGHT BARRIER AROUND THE UTILITY CONDUITS USING RAVEN POUR-N-SEAL OR STEGO-INDUSTRIES MASTIC PRIOR TO THE SLAB POUR. OTHER
SEALANT METHODS IF USED SHALL BE APPROVED BY THE DESIGN ENGINEER PRIOR TO APPLICATION.
11.INSPECTIONS: THE INSTALLATION CONTRACTOR(S) SHALL NOT COVER ANY PORTIONS OF THE VIMS WITHOUT INSPECTION. INSPECTIONS OF EACH COMPONENT OF THE VIMS SHALL BE CONDUCTED BY THE DESIGN 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 (INCLUDING UTILITY BANK LOCATIONS AS DESCRIBED IN SPECIFICATION 10.2, ABOVE); (5) INSPECTION OF ABOVE-GRADE PIPING LAYOUT; AND (6) INSPECTION OF VENTILATOR AND RISER DUCT PIPE CONNECTIONS. INSPECTIONS WILL BE COMBINED WHEN POSSIBLE
DEPENDING ON THE CONSTRUCTION SEQUENCE/SCHEDULE. THE CONSTRUCTION CONTRACTOR(S) SHALL COORDINATE WITH THE ENGINEER TO PERFORM THE REQUIRED INSPECTIONS. A MINIMUM 48-HOUR NOTICE SHALL BE GIVEN TO THE ENGINEER PRIOR TO THE REQUIRED INSPECTION(S).
DEQ WILL ALSO BE NOTIFIED A MINIMUM OF 48 HOURS PRIOR TO THE INSPECTION.
12.PIPE SLEEVES, IF USED, SHALL BE PROPERLY SEALED TO PREVENT A PREFERENTIAL AIR PATHWAY FROM BELOW THE SLAB INTO THE BUILDING. REFER TO TO STRUCTURAL DRAWINGS FOR FOOTING DETAILS ADDRESSING VIMS PIPING.
13.WATERPROOFING INCLUDING MEMBRANES AND DRAINAGE MATS SHALL BE INSTALLED IN ACCORDANCE WITH THE ARCHITECTURAL AND STRUCTURAL PLANS. IF WATERPROOFING IS PRESENT, THE VAPOR BARRIER SHALL BE INSTALLED BETWEEN WATERPROOFING AND ANY DRAINAGE FEATURES
INCLUDING DRAINAGE MATS THE INSTALLER SHALL CONFIRM THAT THE WATERPROOFING PRODUCTS AND SEALANTS USED DURING CONSTRUCTION ARE COMPATIBLE WITH THE SPECIFIED VAPOR BARRIER.
REVISIONS
REV DATE DESCRIPTION
0 6/21/22 DEQ SUBMITTAL
1 8/26/22 DEQ COMMENTS
DATE: 8-26-22
S:\AAA-Master Projects\Embrey (EMB)\EMB.002 South Boulevard Assembly\VIMP\Figures\VIMS Design_R0.dwg, VM-1, 8/26/2022 6:22:30 PM, amckenzie
VAPOR BARRIER AND BASE COURSE (TYP)1
BASE COURSE - CLEAN #57 STONE
MIN 5" THICK BENEATH VAPOR BARRIER
(SEE SPECIFICATION #2)
VAPOR LINER (SEE SPECIFICATION #2)
CONCRETE FLOOR SLAB
SUB-BASE
NTSVM-2
3" SCH 40 THREADED FLUSH JOINT
SLOTTED PVC PIPE SET WITHIN MIN 5"
BASE COURSE (SEE SPECIFICATION #3)
VAPOR LINER (SEE SPECIFICATION #2)
SUB-BASE
CONCRETE FLOOR SLAB
SLOTTED COLLECTION PIPE (TYP)2
NTSVM-2
PVC TERMINATION SCREEN
(SEE SPECIFICATION #3)
VIMS AT DEPRESSIONS IN SLAB-ON-GRADE (TYP)
NTS
3
VM-2
SUB-BASEVAPOR LINER
BASE COURSE
WALL (VARIES)
VIMS PIPING AT CMU WALL FOOTING (TYP)5
VM-2 NTS
WALL (VARIES)
SOLID TO SLOTTED 3" SCH 40 PVC
PIPE TRANSITION (SLIP COUPLING
OR THREADED JOINT)
PIPE SLEEVE
(SEE SPECIFICATION #14)
OPTIONAL VAPOR LINER
INSTALLATION METHOD
SOLID 3" SCH 40 PVC
VAPOR LINER SEALED TO PIPE PER
MANUFACTURER INSTRUCTIONS
COLUMN BLOCKOUT
VIMS AT INTERIOR COLUMN (TYP)
NTS
6
VM-2
SUB-BASE
CONCRETE FLOOR SLAB
BASE COURSE
VAPOR LINER
T.O.F.
CIP CONCRETE COLUMN
CONCRETE FOOTING
T.O.C.
VAPOR LINER SEALED OUTSIDE OF
CONCRETE COLUMN PER
MANUFACTURER INSTRUCTIONS
VIMS AT EXTERIOR COLUMN (TYP)
NTS
7
VM-2
SUB-BASE
CONCRETE
FLOOR SLAB
BASE COURSE
VAPOR LINER
CIP CONCRETE COLUMN
VAPOR LINER SEALED
TO CONCRETE PER
MANUFACTURERS
INSTRUCTIONS
COLUMN BLOCKOUT
VAPOR LINER SEALED
TO CONCRETE ON
EACH SIDE OF COLUMN
COLUMN BLOCKOUT
VIMS PIPING AT INTERIOR COLUMN WITH RISER DUCT PIPING (TYP)
NTS
8
VM-2
SUB-BASE
BASE COURSE
VAPOR LINER
CONCRETE FOOTING
VAPOR LINER SEALED TO
PIPE PER MANUFACTURER
INSTRUCTIONS
SLOTTED 3" SCH 40 PVC
4" SCH 40 PVC
90-DEGREE ELBOW
4" SCH 40 PVC RISER DUCT PIPE
(SEE SPECIFICATIONS #5 & #6)
PIPE SLEEVE
(SEE SPECIFICATION #12)
VAPOR LINER SEALED OUTSIDE OF
CONCRETE COLUMN PER
MANUFACTURER INSTRUCTIONS
4" TO 3" SCH 40
PVC REDUCER
VIMS AT VERTICAL RISERS WITH 90 DEGREE ELBOW (TYP)
NTS
9
VM-2
BASE COURSE
SUB-BASE
SLOTTED 3" SCH 40 PVC
(WHERE SHOWN)
VAPOR LINER SEALED TO PIPE PER
MANUFACTURER INSTRUCTIONS
VAPOR LINER
4" SCH 40 PVC 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
SUPPORT PIPE AS NECESSARY
10
NTSVM-2
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 11/VM-2
VAPOR LINER SEALED TO OUTSIDE OF CONCRETE
AND WATERPROOFING MEMBRANE (WHERE
PRESENT) PER MANUFACTURER INSTRUCTIONS
(SEE DETAIL 11/VM-2)
11
VM-2
SOIL SUB-BASE
VAPOR 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)
OCCUPIED SPACE
OCCUPIED SPACE
VIMS AT STAIRWELL WITH PIPE CONNECTION (TYP)
NTS
12
VM-2
SUB-BASE
BASE COURSE
VAPOR LINER
VAPOR LINER SEALED TO OUTSIDE OF CONCRETE
AND WATERPROOFING MEMBRANE (IF PRESENT)
PER MANUFACTURER INSTRUCTIONS - SEE
DETAIL 11/VM-2
WATERPROOFING AND
RIGID INSULATION
DRAIN
WALL (VARIES)
CONCRETE
FLOOR SLAB
SOLID TO SLOTTED 3" SCH 40 PVC
PIPE TRANSITION (SLIP COUPLING
OR THREADED JOINT)
3" SCH 40 PVC
90-DEGREE ELBOW
VAPOR LINER SEALED TO PIPE
PER MANUFACTURER
INSTRUCTIONS
3" SCH 40 PVC
45-DEGREE ELBOW
PIPE SLEEVE
VIMS RISER WITH NEXT LEVEL OFF-SET (IF APPLICABLE)
NTS
TO EXHAUST
(SEE DETAIL 23/VM-2A)
MIN 1% SLOPE TOWARD
SUB-SLAB PENETRATION
CEILING TRUSSES
NEXT LEVEL FLOOR
PIPE SUPPORTS PER NC
BUILDING CODE
SOLID 4" SCH 40 PVC.
LENGTH VARIES, SLOPED
1/8" PER FOOT
4" SCH 40 PVC
90-DEGREE ELBOW4" SCH 40 PVC
90-DEGREE ELBOW
13
VM-2
NEAREST 6" WALL (IF APPLICABLE)
PREVIOUS LEVEL CEILING
VIMS PIPING THROUGH DEPRESSIONS IN SLAB-ON-GRADE (TYP)
NTS
4
VM-2
SUB-BASE
CONCRETE FLOOR SLAB
VAPOR LINER
BASE COURSE
SOLID TO SLOTTED 3" SCH 40
PVC PIPE TRANSITION (SLIP
COUPLING OR THREADED JOINT)
3" SCH 40 PVC
45-DEGREE ELBOW
VAPOR LINER SEALED TO
PIPE PER MANUFACTURER
INSTRUCTIONS
SOLID 3" SCH 40 PVCPIPE SLEEVE
(SEE SPECIFICATION #12)
WALL (VARIES)
H&H NO. EMB-002
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 #1-13LOSO EPL4001 SOUTH BOULEVARDCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 25063-21-060VM-2
PROFESSIONAL
APPROVAL
NOTES:
VIMS = VAPOR INTRUSION MITIGATION SYSTEM
TYP = TYPICAL
SCH = SCHEDULE
PVC = POLYVINYL CHLORIDE
NTS = NOT TO SCALE
MIL = THOUSANDS OF AN INCH
SOG = SLAB-ON-GRADE
ALL PIPE MEASUREMENTS ARE BY DIAMETER
DEVELOPER:
EMBREY PARTNERS
1020 NE INTERSTATE 410
LOOP #700
SAN ANTONIO, TEXAS
DATE: 8-26-22
REVISIONS
REV DATE DESCRIPTION
0 6/21/22 DEQ SUBMITTAL
1 8/26/22 DEQ COMMENTS
S:\AAA-Master Projects\Embrey (EMB)\EMB.002 South Boulevard Assembly\VIMP\Figures\VIMS Design_R0.dwg, VM-2, 8/26/2022 6:24:05 PM, amckenzie
VIMS AT DEPRESSIONS IN SOG ADJACENT TO OPEN-AIR (TYP)
NTS
19
VM-2A
SUBBASEVAPOR LINER
BASE COURSE
ENCLOSED
INTERIOR
OPEN-AIR
SPACE
TERMINATE VAPOR
LINER AT SOIL GRADE,
WHERE APPLICABLE
WALL (VARIES)
VIMS TERMINATION AT EXTERIOR THICKENED SLAB (TYP)
NTS
18
VM-2A
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 #9)
WALL (VARIES)
OPEN-AIR
SPACEENCLOSED
INTERIOR
VAPOR LINER SEALED TO CONCRETE PER
MANUFACTURERS INSTRUCTIONS (TYP)
MINIMUM 5" THICKENED SLAB THICKNESS
WALL (VARIES)
BASE COURSESUB-BASE
WALL (VARIES)
VAPOR BARRIER AT SLAB EDGE21
NTSVM-2A
VAPOR LINER EXTENDED TO
EXTERIOR SIDE OF FOOTER NO MORE
THAN 6-INCHES BELOW FINISHED
GRADE WHERE POSSIBLE
VAPOR LINER
OPEN-AIR
SPACE
ENCLOSED
INTERIOR
FINAL GRADE
(VARIES)
VIMS AT EXTERIOR CMU WALL FOOTING (TYP)14
VM-2A NTS
WALL (VARIES)
OPTIONAL VAPOR LINER
INSTALLATION METHOD
OPEN-AIR
SPACE
ENCLOSED
INTERIOR
VAPOR LINER SEALED OUTSIDE
OF CONCRETE PER
MANUFACTURER INSTRUCTIONS
SUB-BASE
VAPOR LINER
BASE COURSE
OPEN-AIR
SPACE
ENCLOSED
INTERIOR
VIMS AT RETAINING WALL ADJACENT TO OCCUPIED SPACE (TYP)
NTS
15
VM-2A
SUB-BASE
BASE COURSE
VAPOR LINER
VAPOR LINER SEALED TO OUTSIDE OF
CONCRETE AND WATERPROOFING MEMBRANE
(IF PRESENT) PER MANUFACTURER
INSTRUCTIONS - SEE DETAIL 11/VM-2
WATERPROOFING AND RIGID
INSULATION (IF PRESENT -
REFER TO ARCH. PLANS)
DRAIN
WALL (VARIES)
CONCRETE
FLOOR SLAB
ENCLOSED
INTERIOR
OPEN-AIR
SPACE
VIMS AT RETAINING WALL ADJACENT TO OPEN AIR SPACE (TYP)
NTS
16
VM-2A
SUB-BASE
BASE COURSE
VAPOR LINER
WATERPROOFING AND
RIGID INSULATION
DRAIN
WALL (VARIES)
WALL (VARIES)
BASE COURSESUB-BASE
VAPOR LINER
OPEN-AIR
SPACE
TERMINATE VAPOR
LINER AT SOIL GRADE,
WHERE APPLICABLE
VAPOR BARRIER AT SLAB EDGE ADJACENT TO OPEN-AIR PATIO22
NTSVM-2A
ENCLOSED
INTERIOR
VIMS TURBINE VENTILATOR FAN & EXHAUST (TYPICAL)23
NTS
TURBINE VENTILATOR FAN
(EMPIRE MODEL TV04SS OR ENGINEER
APPROVED EQUIVALENT)
ELECTRICAL JUNCTION BOX FOR POTENTIAL FUTURE
VACUUM FAN (REFER TO SPECIFICATION #5)
RISER DUCT PIPE THROUGH ROOF
FLASHING
ROOFTOP
VM-2A
4" HEAVY DUTY
NO-HUB COUPLING
FINISHED FLOOR SLAB
2" SCH 40 PVC SET WITHIN GRAVEL LAYER
2" DRAIN EXPANSION TEST PLUG
VIMS MONITORING POINT - TYPICAL DETAIL VIEW
NTS
24
VM-2A
VAPOR BARRIER PENETRATION SEALED TO
PIPE PER MANUFACTURER INSTRUCTIONS
2" SCH 40 PVC 90 DEGREE ELBOW
FLOOR CLEANOUT, ADJUSTABLE, 4" DIA ZURN
INDUSTRIES MODEL #CO2450-PV4 (OR ENGINEER
APPROVED EQUIVALENT) FLUSH WITH FINISHED FLOOR
BASE COURSE
4" x 2" FLUSH REDUCER
BUSHING
PVC TERMINATION SCREEN
(SEE SPECIFICATION #7)
VIMS MONITORING POINT AT WALL CONNECTION (IF WARRANTED)
NTS
25
VM-2A
BASE COURSE
VAPOR LINER SEALED TO PIPE PER
MANUFACTURER INSTRUCTIONS
WALL (VARIES)
POSITION TOP OF 2" PIPE MINIMUM 10"
FROM TOP OF ACCESS PANEL DOOR
2" SCH 40 PVC 90
DEGREE ELBOW
VAPOR LINER
12" X 12" WALL
ACCESS PANEL
2" DRAIN EXPANSION TEST PLUG
PVC TERMINATION
SCREEN
POSITION AT CENTER OF WALL OR
ALLOW FOR AT LEAST 1/2" DISTANCE
AROUND ALL SIDES OF PIPE
2" SOLID SCH 40 PVC PIPE
PVC PRIMER AND GLUE ALL
JOINTS ABOVE GRADE
POSITION PIPE INTAKE
UNDER TENANT SPACE
ACROSS CORRIDOR (~6')
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
26
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)
PVC TERMINATION
SCREEN
VIMS AT RAMP TRANSITION (TYP)
NTS
17
VM-\2A
SUB-BASE
VAPOR LINER
BASE COURSE
VIMS AT DEPRESSIONS IN SOG ADJACENT TO OPEN-AIR (TYP)
NTS
20
VM-2A
SUB-BASE
VAPOR LINER
BASE COURSE
ENCLOSED
INTERIOR SPACE
OPEN-AIR
SPACE
TERMINATE VAPOR LINER AT SOIL
GRADE, WHERE APPLICABLE
WALL (VARIES)
H&H NO. EMB-002
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 #14-26LOSO EPL4001 SOUTH BOULEVARDCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 25063-21-060VM-2A
PROFESSIONAL
APPROVAL
NOTES:
VIMS = VAPOR INTRUSION MITIGATION SYSTEM
TYP = TYPICAL
SCH = SCHEDULE
PVC = POLYVINYL CHLORIDE
NTS = NOT TO SCALE
MIL = THOUSANDS OF AN INCH
SOG = SLAB-ON-GRADE
ALL PIPE MEASUREMENTS ARE BY DIAMETER
DEVELOPER:
EMBREY PARTNERS
1020 NE INTERSTATE 410
LOOP #700
SAN ANTONIO, TEXAS
DATE: 8-26-22
REVISIONS
REV DATE DESCRIPTION
0 6/21/22 DEQ SUBMITTAL
1 8/26/22 DEQ COMMENTS
S:\AAA-Master Projects\Embrey (EMB)\EMB.002 South Boulevard Assembly\VIMP\Figures\VIMS Design_R0.dwg, VM-2A, 8/26/2022 6:25:11 PM, amckenzie
4.6% UP
751.00'
750.50'
740.50'
742.00'
742.00'
2.6% UP
751.00'
8
.0%
UP
8
.0%
UP8.
0%
UP
744.00'
12.0% UP
751.00'
12.0% UP
751.00'
749.00'
750.00'751.00'7.1% UP
744.00'
2
.8%
UP
750.00'
8
.0%
UP
750.00'
750.00'
750.00'
748.00'
748.00'
747.00'
746.00'
0.9% UP
750.00'
750.00'
750.00'
750.00'
746.00'
748.75'750.00'
5.4% UP
743.25'742.00'
746.00'
744.00'
746.00'
744.00'
5.5% UP
5.5% UP
6.8% DN7.8% DN
751.00'
5.5% UP
3.8% UP8.1%747.00'
749.00'
749.42'748.84'
742.00'
744.00'
UNIT A1S
SHEET A4.11S
UNIT A1S
SHEET A4.11S
UNIT A1S
SHEET A4.11S
UNIT A2S-A
SHEET A4.43
ANSI TYPE 'A'
UNIT S4M
SHEET A4.04P
UNIT S2.1M
SHEET A4.02P
UNIT B1.1S-A
SHEET A4.44
ANSI TYPE 'A'
UNIT B1.1S
SHEET A4.31P
UNIT B1.1S-A
SHEET A4.44
ANSI TYPE 'A'
UNIT A5M
SHEET A4.33P
UNIT A1.3S
SHEET A4.11P
UNIT A1.3S
SHEET A4.11P
UNIT S1.1M
SHEET A4.01P
E100
E200
E300
ST100
ST200
ST300
ST400
ST500
FW PUMP RM
DW PUMP RM
MAINT.
ELEC RM 1
PET SPA
E400
LOADING DOCKT/R RM 2
T/R RM 1
ELEC RM 2
LOBBY
LOBBY
UNIT A1S
SHEET A4.11S
UNIT A1S
SHEET A4.11S
UNIT A1.2M
SHEET A4.11P
UNIT B1.1S
SHEET A4.31P
UNIT B1.1S
SHEET A4.31P
UNIT A6M
SHEET A4.16P
MECH
DOG PARK
3,801 SF STOR.BIKE STORAGE 1
MECH
LOBBY
MECH
ERRCSERRCS
E-2
E-5
E-6
E-4
E-3
E-7
E-8
E-1
E-9
MP-1
MP-2
MP-4
MP-3
MP-5
MP-7
MP-8 MP-10
MP-9
MP-11
MP-13
MP-12
MP-6
H&H NO. EMB-002
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 1LOSO EPL4001 SOUTH BOULEVARDCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 25063-21-060VM-3
PROFESSIONAL
APPROVAL
LEGEND
SLAB GRADE CHANGE
COLUMN AND FOOTING
OUTDOOR OR OPEN AIR SPACE
PROPOSED TOP OF SLAB ELEVATION. REFER TO STRUCTURAL CONSTRUCTION
DRAWINGS FOR FINAL ELEVATIONS.
EXTENT OF VAPOR LINER
HORIZONTAL COLLECTION PIPING OR SOIL GAS COLLECTOR MAT
3" DIA SCH 40 SOLID PVC PIPE
4" DIA SCH 40 SOLID PVC VERTICAL RISER WITH EXHAUST IDENTIFICATION NUMBER
2" DIA SOLID PVC PRESSURE MONITORING POINT WITH FLUSH-MOUNTED COVER
E-7
MP-4
XXX.XX
EXHAUST SHAFT
PROPOSED SUB-SLAB
SAMPLE LOCATION
PROPOSED SUB-SLAB
SAMPLE LOCATION
PROPOSED SUB-SLAB
SAMPLE LOCATION
PROPOSED SUB-SLAB
SAMPLE LOCATION
PROPOSED SUB-SLAB
SAMPLE LOCATION
PROPOSED SUB-SLAB
SAMPLE LOCATION
PROPOSED SUB-SLAB
SAMPLE LOCATION
8/23
VM-2/2A
9/23
VM-2/2A
8/23
VM-2/2A
9/23
VM-2/2A
8/23
VM-2/2A
8/23
VM-2/2A
1
VM-2
1
VM-2
2
VM-2
20
VM-2A
20
VM-2A
10
VM-2
20
VM-2A
18
VM-2A
24
VM-2A
25
VM-2A
2
VM-2
22
VM-2A
21
VM-2A
21
VM-2A
24
VM-2A
24
VM-2A
26
VM-2A
4
VM-2
22
VM-2A
22
VM-2A
22
VM-2A
7
VM-2
6
VM-2
10
VM-2
10
VM-2
17
VM-2A
21
VM-2A
25
VM-2A
NOTES:
1.MONITORING POINTS LOCATED ON CORRIDOR WALLS MUST EXTEND INTO
TENANT UNIT SPACE (≈6 FT FROM CORRIDOR WALL).
2.THE INTAKE OF MONITORING POINTS SHALL BE A MINIMUM 5 FT FROM EXTERIOR
WALLS / FOOTINGS.
16
VM-2A
12
VM-2
16
VM-2A
16
VM-2A
18
VM-2A
15
VM-2A
18
VM-2A
14
VM-2A
DEVELOPER:
EMBREY PARTNERS
1020 NE INTERSTATE 410
LOOP #700
SAN ANTONIO, TEXAS
9
VM-2
DATE: 8-26-22
REVISIONS
REV DATE DESCRIPTION
0 6/21/22 DEQ SUBMITTAL
1 8/26/22 DEQ COMMENTS
S:\AAA-Master Projects\Embrey (EMB)\EMB.002 South Boulevard Assembly\VIMP\Figures\VIMS Design_R0.dwg, VM-3, 8/26/2022 6:26:10 PM, amckenzie
12.0% DN
T/R DROP 1
E100
E200
E300
ST100
ST200
ST300
ST400
ST500
E400
POOL EQUIP RM
UNIT S5M
SHEET A4.05P
UNIT S4M
SHEET A4.04P
UNIT A2M-A
SHEET A4.43
ANSI TYPE 'A'
UNIT A1M
SHEET A4.11P
UNIT A1M
SHEET A4.11P
UNIT A1M
SHEET A4.11P
UNIT A6M
SHEET A4.16P
UNIT B1.1M-A
SHEET A4.44
ANSI TYPE 'A'
UNIT B1.1M
SHEET A4.31P UNIT A5M
SHEET A4.33P
UNIT A1.3M
SHEET A4.11P
UNIT A1.3M
SHEET A4.11P UNIT B3M
SHEET A4.33P
LOBBY
LOBBY
UNIT A1M
SHEET A4.11P
UNIT A1M
SHEET A4.11P
UNIT B1.1M-A
SHEET A4.44
ANSI TYPE 'A'
UNIT S1.4M
SHEET A4.14P
UNIT B1.1M
SHEET A4.31P
UNIT B1.1M
SHEET A4.31P
UNIT A1.2M
SHEET A4.11P
12.0% DN
762.00'
762.00'
MECH
MECH
MECH
UNIT A1.6M
SHEET A4.11P
UNIT S2.1M
SHEET A4.02P
MECH
T/R DROP 2
STOR.
STOR.
STOR.STOR.STOR.STOR.
STOR.STOR.
STOR.
STOR.
BIKE STORAGE 2
STOR.STOR.STOR.STOR.STOR.STOR.STOR.RESIDENTIAL STORAGE
EXHAUST SHAFT
CHEMICAL STORAGE
MECH
LOBBY
ERRCS
STOR.
STOR.
STOR.
STOR.
E-2
E-5
E-6
E-9
E-4
E-3
E-7
E-8
E-1
H&H NO. EMB-002
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 2LOSO EPL4001 SOUTH BOULEVARDCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 25063-21-060VM-4
PROFESSIONAL
APPROVAL
LEGEND
4" DIA SCH 40 SOLID PVC VERTICAL RISER WITH EXHAUST IDENTIFICATION
NUMBER
E-7 DEVELOPER:
EMBREY PARTNERS
1020 NE INTERSTATE 410
LOOP #700
SAN ANTONIO, TEXAS
DATE: 8-26-22
REVISIONS
REV DATE DESCRIPTION
0 6/21/22 DEQ SUBMITTAL
1 8/26/22 DEQ COMMENTS
S:\AAA-Master Projects\Embrey (EMB)\EMB.002 South Boulevard Assembly\VIMP\Figures\VIMS Design_R0.dwg, VM-4, 8/26/2022 6:26:55 PM, amckenzie
T/R DROP 1
T/R DROP 2
E100
E200
E300
ST100
ST200
ST300
ST400
ST500
E400
LOBBY
LOBBY
LOBBY
STOR.STOR.MECH
MECH
MECH & ELEC
MECH
ELEC
MECH & ELECIDFMECHUNIT B4
SHEET A4.34
UNIT A1.5
SHEET A4.11
UNIT S1.2
SHEET A4.01S
UNIT S1.2
SHEET A4.01S UNIT A8
SHEET A4.18
UNIT B1.1
SHEET A4.31
UNIT B1.1
SHEET A4.31
UNIT B1.1
SHEET A4.31 UNIT A5
SHEET A4.15
UNIT A1.3
SHEET A4.11S
UNIT A1.3
SHEET A4.11S UNIT B3
SHEET A4.33
UNIT B3.1
SHEET A4.33UNIT S1.1
SHEET A4.01UNIT A1
SHEET A4.11
UNIT A1
SHEET A4.11
UNIT A1.4
SHEET A4.11SUNIT B1
SHEET A4.31
UNIT B2
SHEET A4.32
UNIT B1
SHEET A4.31
UNIT S2
SHEET A4.02
UNIT S2
SHEET A4.02UNIT A10
SHEET A4.20
UNIT A10
SHEET A4.20
UNIT S5
SHEET A4.05UNIT A4
SHEET A4.14
UNIT S4
SHEET A4.04
UNIT A2
SHEET A4.12
UNIT A1
SHEET A4.11
UNIT A1.1
SHEET A4.11S
UNIT A1
SHEET A4.11
UNIT A1.1
SHEET A4.11S
UNIT A1
SHEET A4.11
UNIT A6
SHEET A4.16
UNIT B8
SHEET A4.38
UNIT S1.4
SHEET A4.01S
UNIT A9
SHEET A4.19 UNIT S2
SHEET A4.02
UNIT S2
SHEET A4.02
UNIT A7
SHEET A4.17
UNIT A7
SHEET A4.17
UNIT A3
SHEET A4.13
UNIT A3
SHEET A4.13
UNIT A1
SHEET A4.11
UNIT A1
SHEET A4.11
UNIT A3
SHEET A4.13
UNIT A3
SHEET A4.13
UNIT S2
SHEET A4.02
UNIT S2
SHEET A4.02
UNIT A3
SHEET A4.13
UNIT A3
SHEET A4.13
UNIT A9
SHEET A4.19
UNIT A3
SHEET A4.13
UNIT A3
SHEET A4.13
UNIT S2
SHEET A4.02
UNIT S2
SHEET A4.02UNIT A3
SHEET A4.13
UNIT A3
SHEET A4.13
UNIT A3
SHEET A4.13
UNIT A3
SHEET A4.13 UNIT A1.4
SHEET A4.11S
UNIT S1
SHEET A4.01
UNIT S1
SHEET A4.01
UNIT S1
SHEET A4.01
UNIT S1
SHEET A4.01
UNIT S1
SHEET A4.01
UNIT S1
SHEET A4.01
UNIT S1
SHEET A4.01
UNIT S1
SHEET A4.01
UNIT S1.2
SHEET A4.01S
UNIT B1.1
SHEET A4.31
UNIT A1.2
SHEET A4.11S
STOR.
UNIT B2
SHEET A4.32
772.67'
762.00'
762.00'
STOR.IDFERRCS
IDFSTOR.IDF
FAMILY R.R.ERRCS
STOR.
STOR.
STOR.IDFSTOR.STOR.STOR.IDF
HC STOR.STOR.
UNIT B8
SHEET A4.38
UNIT A1.6
SHEET A4.11S
UNIT A1.6
SHEET A4.11S
UNIT A9
SHEET A4.19
IDF
UNIT A9
SHEET A4.19
UNIT B1.1
SHEET A4.31
HC
ERRCS
E-2
E-5 E-6
E-4
E-7
E-9
E-9
E-3
E-3
E-1
E-1
E-8
E-8
H&H NO. EMB-002
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
LEVELS 3-7LOSO EPL4001 SOUTH BOULEVARDCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 25063-21-060VM-5
PROFESSIONAL
APPROVAL
LEGEND
4" DIA SCH 40 SOLID PVC VERTICAL RISER WITH EXHAUST IDENTIFICATION
NUMBER - PREVIOUS LEVEL LOCATION
4" DIA SCH 40 SOLID PVC VERTICAL RISER WITH EXHAUST IDENTIFICATION
NUMBER - CURRENT LEVEL LOCATION
4" DIA SCH 40 SOLID PVC - PREVIOUS LEVEL CEILING LOCATION
E-7
SHIFT RISER TO BE LOCATED
BETWEEN SHOWER WALL -
LEVELS 3-7
SHIFT RISER TO BE LOCATED IN
FURRED CHASE - LEVELS 3-7
SHIFT RISER TO BE LOCATED IN
MECH & ELEC CLOSET - LEVELS 3-7
SHIFT RISER TO BE LOCATED IN
CLOSET FURRED CHASE - LEVELS 3-7
SHIFT RISER TO BE LOCATED
BETWEEN SHOWER WALL -
LEVELS 3-7
SHIFT RISER TO BE LOCATED
BEHIND AHU - LEVELS 3-7
E-9
NOTES:
1.FOR HORIZONTAL RUNS OF ABOVE-SLAB PIPING, REFER TO DETAIL 13/VM-2
OR SPECIFICATION #4.
13
VM-2
13
VM-2
DEVELOPER:
EMBREY PARTNERS
1020 NE INTERSTATE 410
LOOP #700
SAN ANTONIO, TEXAS
DATE: 8-26-22
REVISIONS
REV DATE DESCRIPTION
0 6/21/22 DEQ SUBMITTAL
1 8/26/22 DEQ COMMENTS
S:\AAA-Master Projects\Embrey (EMB)\EMB.002 South Boulevard Assembly\VIMP\Figures\VIMS Design_R0.dwg, VM-5, 8/26/2022 6:27:54 PM, amckenzie
E-2
E-5 E-6
E-4
E-3
E-7
E-8
E-1
E-9
E-4
E-1
E-9
H&H NO. EMB-002
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
ROOF LEVELLOSO EPL4001 SOUTH BOULEVARDCHARLOTTE, NORTH CAROLINABROWNFIELDS PROJECT NO. 25063-21-060VM-6
PROFESSIONAL
APPROVAL
23
VM-2A
23
VM-2A
23
VM-2A
23
VM-2A
23
VM-2A
LEGEND
4" DIA SCH 40 SOLID PVC VERTICAL RISER WITH EXHAUST IDENTIFICATION
NUMBER - PREVIOUS LEVEL LOCATION
4" DIA SCH 40 SOLID PVC VERTICAL RISER WITH EXHAUST IDENTIFICATION
NUMBER - CURRENT LEVEL LOCATION
4" DIA SCH 40 SOLID PVC - PREVIOUS LEVEL CEILING LOCATION
E-7
E-9
DEVELOPER:
EMBREY PARTNERS
1020 NE INTERSTATE 410
LOOP #700
SAN ANTONIO, TEXAS
DATE: 8-26-22
REVISIONS
REV DATE DESCRIPTION
0 6/21/22 DEQ SUBMITTAL
1 8/26/22 DEQ COMMENTS
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Attachment C

VIMS Product Specifications

PRODUCT PART #
VaporBlock® Plus™ 20 ................................................................ VBP20
UNDER-SLAB VAPOR / GAS BARRIER
Under-Slab Vapor/Gas Retarder
© 2018 RAVEN INDUSTRIES INC. All rights reserved.
VAPORBLOCK® PLUS™VBP20
PRODUCT DESCRIPTION
VaporBlock® Plus™ is a seven-layer co-extruded barrier
made using high quality virgin-grade polyethylene and
EVOH resins to provide unmatched impact strength as well
as superior resistance to gas and moisture transmission.
VaporBlock® Plus™ 20 is more than 100 times less permeable
than typical high-performance polyethylene vapor retarders
against Methane, Radon, and other harmful VOCs. Tested and
verified for unsurpassed protection against BTEX, HS, TCE, PCE,
methane, radon, other toxic chemicals and odors.
VaporBlock® Plus™ 20 multi-layer gas barrier is manufactured
with the latest EVOH barrier technology to mitigate hazardous
vapor intrusion from damaging indoor air quality, and the safety
and health of building occupants. VBP20 is one of the most
effective underslab gas barriers in the building industry today
far exceeding ASTM E-1745 (Plastic Water Vapor Retarders
Used in Contact with Soil or Granular Fill Under Concrete Slabs)
Class A, B and C requirements. Available in a 20 (Class A) mil
thicknesses designed to meet the most stringent requirements.
VaporBlock® Plus™ 20 is produced within the strict guidelines
of our ISO 9001 Certified Management System.
PRODUCT USE
VaporBlock® Plus™ 20 resists gas and moisture migration
into the building envelop when properly installed to provide
protection from toxic/harmful chemicals. It can be installed as
part of a passive or active control system extending across the
entire building including floors, walls and crawl spaces. When
installed as a passive system it is recommended to also include
a ventilated system with sump(s) that could be converted to an
active control system with properly designed ventilation fans.
VaporBlock® Plus™ 20 works to protect your flooring and
other moisture-sensitive furnishings in the building’s interior
from moisture and water vapor migration, greatly reducing
condensation, mold and degradation.
SIZE & PACKAGING
VaporBlock® Plus™ 20 is available in 10’ x 150’ rolls to
maximize coverage. All rolls are folded on heavy-duty cores
for ease in handling and installation. Other custom sizes
with factory welded seams are available based on minimum
volume requirements. Installation instructions and ASTM E-1745
classifications accompany each roll.
APPLICATIONS
Radon Barrier
Methane Barrier
VOC Barrier
Brownfields Barrier
Vapor Intrusion Barrier
Under-Slab Vapor Retarder
Foundation Wall Vapor Retarder
VaporBlock® Plus™ is a seven-layer co-extruded barrier made using high quality virgin-grade polyethylene and EVOH resins to provide unmatched impact strength as well as superior resistance to gas and moisture transmission.
VaporBlock® Plus™ Placement
All instructions on architectural or structural drawings should be reviewed and followed.
Detailed installation instructions accompany each roll of VaporBlock® Plus™ and can also be located at www.ravenefd.com.
ASTM E-1643 also provides general installation information for vapor retarders.
VAPORBLOCK® PLUS™ 20
PROPERTIES TEST METHOD IMPERIAL METRIC
AppeArAnce White/Gold
Thickness, nominAl 20 mil 0.51 mm
WeighT 102 lbs/MSF 498 g/m²
clAssificATion ASTM E 1745 CLASS A, B & C
³ Tensile sTrengTh
ASTM E 154Section 9(D-882)58 lbf 102 N
impAcT resisTAnce ASTM D 1709 2600 g
permeAnce (neW mATeriAl)
ASTM E 154Section 7ASTM E 96Procedure B
0.0098 Perms
grains/(ft²·hr·in·Hg)
0.0064 Perms
g/(24hr·m²·mm Hg)
permeAnce (AfTer condiTioning)
(sAme meAsuremenT As Above permeAnce)
ASTM E 154Section 8, E96Section 11, E96Section 12, E96Section 13, E96
0.00790.00790.00970.0113
0.00520.00520.00640.0074
WvTr ASTM E 96Procedure B 0.0040 grains/hr-ft²0.0028 gm/hr-m²
benzene permeAnce See Note ⁶1.13 x 10-¹⁰ m²/sec or 3.62 x 10-¹³ m/s
Toluene permeAnce See Note ⁶1.57 x 10-¹⁰ m²/sec or 1.46 x 10-¹³ m/s
eThylbenzene permeAnce See Note ⁶1.23 x 10-¹⁰ m²/sec or 3.34 x 10-¹⁴ m/s
m & p-Xylenes permeAnce See Note ⁶1.17 x 10-¹⁰ m²/sec or 3.81 x 10-¹⁴ m/s
o-Xylene permeAnce See Note ⁶1.10 x 10-¹⁰ m²/sec or 3.43 x 10-¹⁴ m/s
hydrogen sulfide See Note 9 1.92E-⁰⁹ m/s
TrichloroeThylene (Tce) See Note ⁶7.66 x 10-¹¹ m²/sec or 1.05 x 10-¹⁴ m/s
perchloroeThylene (pce)See Note ⁶7.22 x 10-¹¹ m²/sec or 1.04 x 10-¹⁴ m/s
rAdon diffusion coeffiecienT K124/02/95 < 1.1 x 10-13 m2/s
meThAne permeAnce ASTM D 1434 3.68E-¹² m/sGas Transmission Rate (GTR):0.32 mL/m²•day•atm
mAXimum sTATic use TemperATure 180° F 82° C
minimum sTATic use TemperATure - 70° F - 57° C
UNDER-SLAB VAPOR / GAS BARRIER
VAPORBLOCK® PLUS™VBP20
© 2018 RAVEN INDUSTRIES INC. All rights reserved.
Scan QR Code to download
current technical data sheets
via the Raven website.
Note: To the best of our knowledge, unless otherwise stated, these are typical property values and are intended as guides only, not as specification limits. Chemical resistance, odor transmission, longevity as well as other performance criteria is not implied or given and actual testing must be performed for applicability in specific applications and/or conditions. RAVEN INDUSTRIES MAKES NO WARRANTIES AS TO THE FITNESS FOR A SPECIFIC USE OR MERCHANTABILITY OF PRODUCTS REFERRED TO, no guarantee of satisfactory results from reliance upon contained information or recommendations and disclaims all liability for resulting loss or damage. Limited Warranty available at www.RavenEFD.com
061318 EFD 1125
RAVEN ENGINEERED FILMSP.O. Box 5107 Sioux Falls, SD 57117-5107Ph: [phone] • TF: [phone] [e-mail]
³ Tests are an average of machine and transverse directions.5 Raven Industries performs seam testing at 20” per minute.6 Aqueous Phase Film Permeance. Permeation of Volatile Organic Compounds through EVOH Thin Film Membranes and Coextruded LLDPE/EVOH/
LLDPE Geomembranes, McWatters and Rowe, Journal of Geotechnical and Geoenvironmental Engineering© ASCE/
September 2015. (Permeation is the Permeation Coefficient adjusted to actual film thickness - calculated at 1 kg/m³.)
The study used to determine PCE and TCE is titled: Evaluation of diffusion of PCE & TCE through high performance geomembranes by Di
Battista and Rowe, Queens University 8 Feb 2018.9 The study used to determine diffusion coefficients is titled: Hydrogen Sulfide (H₂S) Transport through Simulated Interim Covers with Conventional and Co-Extruded Ethylene-Vinyl Alcohol (EVOH) Geomembranes.
INSTALLATION GUIDELINES - With VaporSeal™ Tape
VaporSeal™
4” Tape
VaporSeal™ 4” Tape Optional Butyl Seal
2-Sided Tape
Gas Barrier Applications
Elements of a moisture/gas-resistant floor system. General illustration only.(Note: This example shows multiple options for waterstop placement.
VaporSeal™
4” Tape
VaporSeal™ 4” Tape Optional Butyl Seal
2-Sided Tape
Gas Barrier Applications
Fig. 2: VaporBlock® Plus™ Overlap Joint Sealing Methods
Fig. 1: VaporBlock® Plus™ Overlapping Roll-out Method
Please Note: Read these instructions thoroughly before installation to ensure proper use of VaporBlock® Plus™. ASTM E 1465, ASTM E 2121 and, ASTM E 1643 also provide valuable information regarding the installation of vapor / gas barriers. When installing this product, contractors shall conform to all applicable local, state and federal regulations and laws pertaining to residential and commercial building construction.
• When VaporBlock® Plus™ gas barrier is used as part of an active control system for radon or other gas, a ventilation system will be required.
• If designed as a passive system, it is recommended to install a ventilation system that could be converted to an active system if needed.
Materials List:VaporBlock® Plus™ Vapor / Gas BarrierVaporSeal™* 4” Seaming TapeVaporSeal™* 12” Seaming/Repair TapeButyl Seal 2-Sided TapeVaporBoot Plus Pipe Boots 12/Box (recommended)VaporBoot Tape (optional)POUR-N-SEAL™ (optional)1” Foam Weather Stripping (optional)Mako® Screed Supports (optional)
VAPORBLOCK® PLUS™ PLACEMENT
1.1. Level and tamp or roll granular base as specified. A base for a gas-reduction system may require a 4” to 6” gas permeable layer of clean coarse aggregate as specified by your architectural or structural drawings after installation of the recommended gas collection system. In this situation, a cushion layer consisting of a non-woven geotextile fabric placed directly under VaporBlock® Plus™ will help protect the barrier from damage due to possible sharp coarse aggregate.
1.2. Unroll VaporBlock® Plus™ running the longest dimension parallel with the direction of the pour and pull open all folds to full width. (Fig. 1)
1.3. Lap VaporBlock® Plus™ over the footings and seal with Raven Butyl Seal tape at the footing-wall connection. Prime concrete surfaces, when necessary, and assure they are dry and clean prior to applying Raven Butyl Seal Tape. Apply even and firm pressure with a rubber roller. Overlap joints a minimum of 6” and seal overlap with 4” VaporSeal™ Tape. When used as a gas barrier, overlap joints a minimum of 12” and seal in-between overlap with an optional 2-sided Raven Butyl Seal Tape. Then seal with 4” VaporSeal™ Tape centered on the overlap seam. (Fig. 2)
Page 1 of 4 Top original diagram and figure #1 were reprinted with permission by the Portland Cement Association.Reference: Kanare, Howard M., Concrete Floors and Moisture, EB119, Portland Cement Association, Skokie, Illinois, and National Ready Mixed Concrete Association, Silver Spring, Maryland, USA, 2008, 176 pages.
1.4. Seal around all plumbing, conduit, support columns or other penetrations that come through the VaporBlock® Plus™ membrane.
1.4a. Method 1: Pipes four inches or smaller can be sealed with Raven VaporBoot Plus preformed pipe boots. VaporBoot Plus preformed pipe boots are formed in steps for 1”, 2”, 3” and 4” PVC pipe or IPS size and are sold in units of 12 per box (Fig. 3 & 5).
Pipe boots may also be fabricated from excess VaporBlock® Plus™ membrane (Fig. 4 & 6) and sealed with VaporBoot Tape or VaporSeal™ Tape (sold separately).
1.4b. Method 2: To fabricate pipe boots from VaporBlock® Plus™ excess material (see Fig. 4 & 6 for A-F):
A) Cut a square large enough to overlap 12” in all directions.
B) Mark where to cut opening on the center of the square and cut four to eight slices about 3/8” less than the diameter of the pipe.
C) Force the square over the pipe leaving the tightly stretched cut area around the bottom of the pipe with approximately a 1/2” of the boot material running vertically up the pipe. (no more than a 1/2” of stretched boot material is recommended)
D) Once boot is positioned, seal the perimeter to the membrane by applying 2-sided Raven Butyl Seal Tape in between the two layers. Secure boot down firmly over the membrane taking care not to have any large folds or creases.
E) Use VaporBoot Tape or VaporSeal™ Tape to secure the boot to the
pipe.
VaporBoot Tape (option) – fold tape in half lengthwise, remove half of the release liner and wrap around the pipe allowing 1” extra for overlap sealing. Peel off the second half of the release liner and work the tape outward gradually forming a complete seal.
VaporSeal™ Tape (option) - Tape completely around pipe overlapping the VaporBlock® Plus™ square to create a tight seal against the pipe.
F) Complete the process by taping over the boot perimeter edge with VaporSeal™ Tape to create a monolithic membrane between the surface of the slab and gas/moisture sources below and at the slab perimeter. (Fig. 4 & 6)
Preformed Pipe Boot Square Material Pipe Boot
Fig. 3
SINGLE PENETRATION PIPE BOOT INSTALLATION
Fig. 5 Fig. 6
1. Cut a square of VaporBlock® Plus™ barrier to extend at least 12” from the pipe in all directions.
2. Cut four to eight slices about 3/8” less than the diameter of the pipe.
5. Use Raven VaporBoot or VaporSeal™ Tape and overlap 1” at the seam.
4. Tape over the boot perimeter edge with VaporSeal™ Tape.
1. Cut out one of the preformed boot steps (1” to 4”).
2. Tape the underside boot perimeter with 2-sided Butyl Seal Tape.
3. Force the boot over pipe and press tape firmly in place.
4. Use VaporSeal™ Tape
to secure boot to the pipe.
5. Tape around entire boot edge with VaporSeal™ Tape.
VaporBoot Flexible Tapeor VaporSeal™ 4” TapeVaporSeal™ 4” Tape
VaporBlock® Plus™Material
VaporSeal™ 4” Tape
Raven Butyl Seal2-Sided Tape Raven Butyl Seal2-Sided Tape
VaporBoot PlusPreformed Boot 12”(minimum)
3. Force over pipe and tape the underside boot perimeter to existing barrier with 2-sided Butyl Seal Tape.
Fig. 4
Page 2 of 4 Original figure #4 diagram is reprinted with permission by the Portland Cement Association.Reference: Kanare, Howard M., Concrete Floors and Moisture, EB119, Portland Cement Association, Skokie, Illinois, and National Ready Mixed Concrete Association, Silver Spring, Maryland, USA, 2008, 176 pages.Method 1
Method 2
VaporSeal™4” Tape VaporBoot PlusPerformed Boot
Raven Butyl Seal 2-sided Tape Raven Butyl Seal 2-sided Tape
1.5. Sealing side-by-side multiple penetrations (option 1);
A) Cut a patch large enough to overlap 12” in all directions (Fig. 7)
of penetrations.
B) Mark where to cut openings and cut four to eight slices about
3/8” less than the diameter of the penetration for each.
C) Force patch material over penetration to achieve a tight fit and
form a lip.
D) Once patch is positioned, seal the perimeter to the membrane
by applying 2-sided Raven Butyl Seal Tape in-between the two
layers. (Fig. 8)
E) After applying Raven Butyl Seal Tape between the patch and
membrane, tape around each of the penetrations and the patch
with VaporSeal™ 4” tape. (Fig. 9) For additional protection apply
POUR-N-SEAL™ or an acceptable polyurethane elastomeric
sealant around the penetrations. (Fig. 10)
Fig. 7 Fig. 8
Fig. 9 Fig. 10
MULTIPLE PENETRATION PIPE BOOT INSTALLATION
Fig. 6
Cut a patch large enough to overlap 12” in all directions and slide over penetrations (Make openings as tight as possible.)
Once the overlay patch is positioned, seal the perimeter to the membrane by applying 2-sided Raven Butyl Seal Tape in-between the two layers.
After applying Raven Butyl Seal Tapebetween the patch and membrane, tape around the perimeter of the penetration and the patch with VaporSeal™ 4” Tape.
For additional protection apply POUR-N-SEAL™ or an acceptable polyurethane elastomeric sealant around the penetrations.
VaporSeal™ 4” Tape VaporSeal™ 4” Tape
Page 3 of 4
Option 1
Raven Butyl Seal 2-sided Tape
1.6. POUR-N-SEAL™ method of sealing side-by-side multiple penetrations (option 2);
A) Install the vapor barrier as closely as possible to pipe penetrations to minimize the amount of POUR-N-SEAL™ necessary to seal around all penetrations.
B) Once barrier is in place, remove soil or other particles with a dry cloth or a fine broom to allow for improved adhesion to the POUR-N-SEAL™ liquid.
C) Create a dam around the penetration area approximately 2” away from the pipe or other vertical penetrations by removing the release liner from the back of a 1” weather stripping foam and adhere to the vapor barrier. Form a complete circle to contain the POUR-N-SEAL™ materials (Fig. 11).
D) Once mixed, pour contents around the pipe penetrations. If needed, a brush or a flat wooden stick can be used to direct the sealant completely around penetrations creating a complete seal (Fig. 12-13).
E) DO NOT leave excess POUR-N-SEAL™ in plastic container for longer than the time it takes to pour sealant.
Fig. 12 Fig. 13
Fig. 11
Option 2
VAPORBLOCK® PLUS™ REPAIR INSTRUCTIONS
1.7. Proper installation requires all holes and openings are repaired prior
to placing concrete. When patching small holes, simply cut a 12” long
piece of 12” wide VaporSeal™ tape. Remove release liner and center
over the opening. Apply pressure to create a seal (Fig. 14-15).
1.8. When installing VaporBlock® Plus™ around pipe penetrations,
vertical columns, electrical ducts and other obstructions, you will
find it necessary to cut it to the nearest outside edge. This cut can
be easily sealed with 12” wide VaporSeal™ tape, by simply centering
it over the cut, 6” on either side. Once the tape is placed correctly,
apply pressure to assure a complete seal (Fig. 16).
Reminder Note: All holes or penetrations through the membrane will need
to be patched with 12” VaporSeal™ Tape.
Fig. 14
Page 4 of 5
Fig. 15
2.1. When installing reinforcing steel and utilities, in addition to the
placement of concrete, take precaution to protect VaporBlock®
Plus™. Carelessness during installation can damage the most
puncture–resistant membrane. Sheets of plywood cushioned with
geotextile fabric temporarily placed on VaporBlock® Plus™ provide
for additional protection in high traffic areas including concrete
buggies.
2.2. Use only brick-type or chair-type reinforcing bar supports to protect
VaporBlock® Plus™ from puncture.
2.3. Avoid driving stakes through VaporBlock® Plus™. If this cannot be
avoided, each individual hole must be repaired per section 1.7.
2.4. To avoid penetrating VaporBlock® Plus™ when installing screed
supports, utilize non-penetrating support, such as the Mako®
Screed Support System (Fig. 17). Avoid driving stakes through
VaporBlock® Plus™. If this cannot be avoided, each individual hole
must be repaired per figures 14-15.
2.5. If a cushion or blotter layer is required in the design between
VaporBlock® Plus™ and the slab, additional care should be given if
sharp crushed rock is used. Washed rock will provide less chance of
damage during placement. Care must be taken to protect blotter layer
from precipitation before concrete is placed.
VaporBlock® Plus™ Gas & Moisture Barrier can be identified on site
as gold/white in color printed in black ink with following logo and
classification listing (Fig. 18)
Page 5 of 5
VaporBlock® Plus™
Gas & Moisture Barrier
Note: To the best of our knowledge, unless otherwise stated, these are typical property values and are intended as guides only, not as specification limits. Chemical resistance, odor transmission, longevity as well as other performance criteria is not implied or given and actual testing must be performed for applicability in specific applications and/or conditions. RAVEN INDUSTRIES MAKES NO WARRANTIES AS TO THE FITNESS FOR A SPECIFIC USE OR MERCHANTABILITY OF PRODUCTS REFERRED TO, no guarantee of satisfactory results from reliance upon contained information or recommendations and disclaims all liability for resulting loss or damage. Limited Warranty available at wwww.RavenEFD.com
ENGINEERED FILMSP.O. Box 5107 Sioux Falls, SD 57117-5107Ph: [phone] • TF: [phone]
[e-mail]
020316 EFD 1127
VAPORBLOCK® PLUS™ PROTECTION
Fig. 16
Fig. 18
Fig. 17
* Patent Pending
© Raven 2016. All Rights Reserved.
Engineered protection to create a healthy built environment.
DRAGO® WRAP
VAPOR INTRUSION BARRIER
3-in-1 product solution
EXPOSURE PATHWAY – VAPOR INTRUSION
For brownfields and contaminated sites, the focus has historically been to protect human health by preventing
exposure to direct contact of contaminated soil or drinking contaminated water. We now know that inhaling
chemical vapors poses a potential risk to the health of residents, workers, and other occupants who are inside
of the buildings. (Source: EPA)
A VAPOR INTRUSION BARRIER SOLUTION with Unsurpassed Permeation Coefficients
Drago Wrap Vapor Intrusion Barrier is a multi-layered plastic extrusion that combines uniquely
designed materials with only high grade, prime, virgin resins. This patent pending barrier tech-
nology provides high performance and longevity, allowing for the redevelopment of contaminated
sites, creating a healthy built environment.
A cost effective 3-in-1 product solution providing unsurpassed protection from
chlorinated solvents, hydrocarbons, and moisture vapor.
Migration of Soil Vapors to Indoor Air
Both diffusion and advection can draw unwanted chemicals into the building envelope. Regardless of
the path that soil vapors can take, experts agree that a monolithic layer of protection like the Drago
Wrap Vapor Intrusion Barrier System is critical to controlling the transmission of these chemicals
into the building.
WATER TABLESOIL VAPORMIGRATION
SOIL CONTAMINATEDWITH VOCs GROUNDWATER PLUMEOF VOCs
VAPOR INTRUSIONTHROUGH THEFOUNDATION SLAB
WATER TABLESOIL VAPORMIGRATION
SOIL CONTAMINATEDWITH VOCs GROUNDWATER PLUMEOF VOCs
DRAGO WRAP VAPOR INTRUSION BARRIER
Vapor-forming chemicals may include:
• Volatile organic compounds (VOCs), such as
trichloroethylene and benzene.
• Select semivolatile organic compounds,
such as naphthalene.
This exposure pathway, known as vapor
intrusion, is the movement of chemical
vapors from the soil and groundwater
into the building envelope.
• In extreme examples, there is a risk of fire
or explosion.
• Other times, at levels with a detectable odor,
there may be acute short-term health issues
such as nausea, headache, and respiratory
irritation.
• More commonly though, long-term exposure
to even low-levels of certain chemical vapors
may increase the risk of chronic health effects,
such as cancer.
Drago Wrap Vapor Intrusion Barrier is the next game-changing barrier technology from the
creators of Stego® Wrap Vapor Barrier, the most widely-specified below-slab moisture vapor
barrier in North America.*
(Source: EPA)
“It is estimated that there are more than 450,000 brownfields in the U.S.”
– www.epa.gov/brownfields
WATER TABLESOIL VAPORMIGRATION
SOIL CONTAMINATEDWITH VOCs GROUNDWATER PLUMEOF VOCs
VAPOR INTRUSIONTHROUGH THEFOUNDATION SLAB
WATER TABLESOIL VAPORMIGRATION
SOIL CONTAMINATEDWITH VOCs GROUNDWATER PLUMEOF VOCs
DRAGO WRAP VAPOR INTRUSION BARRIER
Extensive testing✓

Drago Wrap is specifically engineered to serve as a barrier to volatile organic compounds (VOCs). Through
patented and trade secret processes, Drago Wrap combines engineered barrier materials with the flexibility
and strength of a high-performance polyolefin film into an easy-to-install barrier against hydrocarbons and
chlorinated solvents.
TESTED – PROVEN EFFECTIVENESS
Extensive, independent testing proved Drago Wrap’s effectiveness in attenuating hydrocarbons and chlorinated
solvents. For more information on our independent testing, please contact Stego Industries’ Technical
Department or visit our website at www.stegoindustries.com.*
FEATURES BENEFITS
Independent, university testing
Made from game-changing resin technology
and provides high performance and longevity
Installation methodology derived from extensive
lab and field work based on the principles found in
ASTM E1643 and finally validated through pressure
stress testing of simulated installations
20-mil, multi-layer material
14 ft wide rolls
ASTM E1745 compliant
Efficacy testing for hydrocarbons, chlorinated
solvents, and other soil gases (radon, methane)
Allows Developers, Owners, and Engineers to
redevelop brownfield sites and create a healthy
built environment
Fully intact, dependable installation
Exceptional durability as a result of robust physical
properties
Minimize seams
Designed to be installed below concrete slabs in
commercial, residential, and industrial applications
DRAGO WRAP IS ENGINEERED TO SERVE AS A BARRIER TO VOLATILE ORGANIC COMPOUNDS
BENEFITS OF THE DRAGO WRAP
VAPOR INTRUSION BARRIER SYSTEM
COMPLETE PROTECTIONWith Drago’s Full Line of Accessory Products
DragoINSTALLATION
Installation methodology derived from extensive lab and field work based on the principles found
in ASTM E1643 and validated through pressure stress testing of simulated installations demon-
strates Drago Wrap’s ability to produce a fully intact, dependable installation.
As with any protection system, the installation of Drago Wrap is critical to the system’s effective-
ness. Drago Wrap and Drago Accessories make it easy to complete a successful installation.
Refer to the complete Drago Wrap Installation
Instructions and Warranty Information on the
website: www.stegoindustries.com.*
DragoSUPPORT
Our North American network of Stego employ-
ees, representatives, and distributors ensure that
the products we bring to market are both readily
available and accompanied with excellent technical
knowledge and field support when you need it.*
To learn more about this new game-changing technology, contact us to get in touch with the
nearest Stego representative.* We look forward to working with you on your next project.
www.stegoindustries.com | 877-464-7834
Tel: [phone] | Toll Free: 877-464-7834 | www.stegoindustries.com
* Stego Industries, LLC is the exclusive Representative for all products, including Drago® Wrap and accessory products, owned by Stego Technology, LLC, a wholly independent company from Stego Industries, LLC. Drago, the Drago logo, and DragoTack are deemed to be registered and/or protectable trademarks of Stego Technology, LLC. Stego and the stegosaurus logo, are deemed to be registered and/or protectable trademarks of Stego Industries, LLC. © 2017 Stego Industries, LLC. All Rights Reserved. Installation and Warranty Information: www.stegoindustries.com/legal. 9/2017
Drago® Tape
This pressure-sensitive
adhesive, coupled with the
same uniquely designed
materials as Drago Wrap,
make it ideal for sealing
Drago Wrap seams and
penetrations.
DragoTack™ Tape
A solvent-resistant,
double-sided adhesive
strip used to bond and
seal Drago Wrap to
concrete, masonry,
wood, metal, and other
surfaces.
Drago® Sealant
A two-component,
high performance epoxy,
designed to be used with
Drago Wrap, for sealing
utility and pipe penetra-
tions.
Drago® Sealant Form
A low-density, cross-
linked, closed-cell
polyethylene foam
designed to be used as
a detailing piece with
Drago Sealant.

Stego is involved in the research, design, development, production and distribution of the highest quality construction products in the industry. Stego’s technical department
offers technical advice and additional information regarding the specific properties of all Stego products. Based on the department's experience, understanding of relevant
scientific principles, and knowledge of current industry expert recommendations, Stego can advise on issues related to utility versus cost in order to assist in creating installation best practices. However, Stego does not employ design professionals. Therefore, Stego cannot interpret ASTM installation standards (E1643) and must defer to the project’s
assigned design professional on final design decisions. Version 1.1 | Last Update: October 25, 2017 I Created: September 12, 2017

DRAGO® WRAP VAPOR INTRUSION BARRIER
SUMMARY OF PERMEATION AND ATTENUATION TESTING

Stego Industries, LLC is the exclusive Representative for all products, including Drago® Wrap and accessory products, owned and
developed by Stego Technology, LLC, a wholly independent company from Stego Industries, LLC. Drago, the Drago logo, and
DragoTack are deemed to be registered and/or protectable trademarks of Stego Technology, LLC. © 2017 Stego Industries, LLC. All
Rights Reserved. Installation, Warranty and State Approval Information: www.stegoindustries.com/legal.

stegoindustries.com

1
BACKGROUND
Commencing in 2015 and continuing indefinitely, Drago Wrap Vapor Intrusion Barrier has been subjected to a series of
permeation tests. This testing was designed—and has been subsequently overseen—by an expert in the permeation
of volatile organic compounds (VOCs) at a prominent university. The results of this testing have been used to
empirically determine the attenuation efficacy (i.e. the permeation coefficients) of Drago Wrap against various
hydrocarbons and chlorinated solvents. The purpose of this document is to summarize and explain the robust and
ongoing testing protocol utilized and to relay the current results.

CHEMICALS TESTED
Drago Wrap has been/is being tested with regard to permeation of the following chemicals: TCE; PCE; the BTEX family:
Benzene, Toluene, Ethylbenzene, Xylene; Dichloromethane; 1,4 Dichlorobenzene; Methyl tert-butyl ether (MTBE) and
Naphthalene.

TESTING METHODOLOGY
The tests utilize stainless steel diffusion cells as depicted in Figures 1 and 2. The diffusion cells create two chambers—a
source chamber and receptor chamber—that are separated by the membrane under investigation. The source
chamber is populated by the permeant (chemical) under consideration and diffuses across the membrane toward the
receptor chamber. In this setup, the membrane—Drago Wrap—is the only barrier preventing chemicals from reaching
the receptor chamber. Periodic sampling of both the source and receptor chambers of the diffusion cell allows for Gas
Chromatography, Mass Spec (GC/MS) analysis of the airspace on either side of the membrane. Complex physics,
mathematics and numerical modeling of the GC/MS data yield the permeation coefficients seen in
Table 1. Testing, as alluded, is ongoing; the concentrations in the diffusion cells will be monitored indefinitely, numerical
models utilized and results updated accordingly.

Figure 1 Figure 2

Stego is involved in the research, design, development, production and distribution of the highest quality construction products in the industry. Stego’s technical department
offers technical advice and additional information regarding the specific properties of all Stego products. Based on the department's experience, understanding of relevant
scientific principles, and knowledge of current industry expert recommendations, Stego can advise on issues related to utility versus cost in order to assist in creating installation best practices. However, Stego does not employ design professionals. Therefore, Stego cannot interpret ASTM installation standards (E1643) and must defer to the project’s
assigned design professional on final design decisions. Version 1.1 | Last Update: October 25, 2017 I Created: September 12, 2017

DRAGO® WRAP VAPOR INTRUSION BARRIER
SUMMARY OF PERMEATION AND ATTENUATION TESTING

Stego Industries, LLC is the exclusive Representative for all products, including Drago® Wrap and accessory products, owned and
developed by Stego Technology, LLC, a wholly independent company from Stego Industries, LLC. Drago, the Drago logo, and
DragoTack are deemed to be registered and/or protectable trademarks of Stego Technology, LLC. © 2017 Stego Industries, LLC. All
Rights Reserved. Installation, Warranty and State Approval Information: www.stegoindustries.com/legal.

stegoindustries.com

2
The discrete layers that make up Drago Wrap were tested to determine their respective permeation coefficients. The
results obtained from the mathematical modeling of these tests do not necessarily equate to the values obtained from
whole-film permeation testing. In other words, the membrane appears to benefit from a synergistic effect; the whole is
greater than the sum of its parts. The results in Table 1 come from the most conservative approach to analyzing the
results and do not take into account these synergies.

RESULTS
The values displayed in Table 1 result from a combination of data generated from several phases of testing and
numerical modeling.

Table 1
Chemical Abbreviation Family Use Upper-Bound Permeation, Pg
[x 10-13 m2/s]
Benzene Btex Aromatic Hydrocarbon Gasoline byproduct 4.5
Toluene bTex Aromatic Hydrocarbon Gasoline byproduct 5.1
Ethylbenzene btEx Aromatic Hydrocarbon Gasoline byproduct 3.1
M&P-Xylenes bteX Aromatic Hydrocarbon Gasoline byproduct 2.9
O-Xylene bteX Aromatic Hydrocarbon Gasoline byproduct 2.7
Methyl tert-butyl ether MTBE Oxygenate Octane-increasing additive to fuel 0.012
Trichloroethylene TCE Chlorinated Hydrocarbon Dry Cleaning and Solvent 1.5
Tetrachloroethylene PCE Chlorinated Hydrocarbon Dry Cleaning and Solvent 3.0
Dichloromethane DCM Chlorinated Hydrocarbon Paint Stripper, Decaffeinater, Aerosol propellant 4.5
1,4-Dichlorobenzne 1,4-DCB Chlorinated Hydrocarbon Pesticide, Disinfectant, Deodorant 7.1
Naphthalene Naphthalene Polycyclic Aromatic
Hydrocarbon Fumigant, Pyrotechnics, Wetting Agent 0.25

P1 OF 2
DRAGO® WRAPVAPOR INTRUSION BARRIER
A STEGO TECHNOLOGY, LLC INNOVATION | VAPOR RETARDERS 07 26 00, 03 30 00 | VERSION: 06/23/2017
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 0.0069 perms Film and Sheeting Using a Modulated Infrared Sensor [gr/(ft2*hr*in-Hg)]
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 mils
Roll Dimensions 14' x 105' or 1,470 ft2
Roll Weight 150 lbs
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: 06/23/2017
DATA SHEETS ARE SUBJECT TO CHANGE. FOR MOST CURRENT VERSION, VISIT WWW.STEGOINDUSTRIES.COM
[phone] | www.stegoindustries.com
* Stego Industries, LLC is the exclusive Representative for all products, including Drago® Wrap and accessory products, owned by Stego Technology, LLC, a wholly independent company from Stego Industries, LLC. Drago, the Drago logo, and DragoTack are deemed to be registered and/or protectable trademarks of Stego Technology, LLC. Stego and the stegosaurus logo, are deemed to be registered and/or protectable trademarks of Stego Industries, LLC. © 2017 Stego Industries, LLC. All Rights Reserved. Installation and Warranty Information: www.stegoindustries.com/legal.
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
• Buildsite
P2 OF 2
INSTALLATIONINSTRUCTIONS
DRAGO® WRAP
VAPOR INTRUSION BARRIER
Engineered protection to create a healthy built environment.
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.
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 both lateral and butt should be overlapped
a minimum of 12 inches and taped using Drago® Tape. (Fig. 1)
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.
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
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.
Continued ... Note - legal notice on page 3
DRAGO® WRAP VAPOR INTRUSION BARRIERINSTALLATION INSTRUCTIONS
P1 of 3
Continued ... Note - legal notice on page 3
DRAGO® WRAP VAPOR INTRUSION BARRIERINSTALLATION INSTRUCTIONS
P2 of 3
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 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
STEGO INDUSTRIES, LLC • SAN CLEMENTE, CA • 949-257-4100 • 877-464-7834 • www.stegoindustries.com
Stego Industries, LLC is the exclusive Representative for all products, including Drago® Wrap and accessory products, owned by Stego Technology, LLC, a wholly independent company from Stego Industries, LLC. Drago, the Drago logo, and DragoTack are deemed to be registered and/or protectable trademarks of Stego Technology, LLC. Stego and the stegosaurus logo, are deemed to be registered and/or protectable trademarks of Stego Industries, LLC. © 2017 Stego Industries, LLC. All Rights Reserved. Installation and Warranty Information: www.stegoindustries.com/legal. 6/2017
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.
ADDITIONAL INSTALLATION VALIDATION CAN BE DONE THROUGH SMOKE TESTING. SEE DRAGO WRAP VAPOR INTRUSION
SYSTEM SMOKE TESTING FIELD GUIDE FOR ADDITIONAL CONSIDERATIONS.
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® FOOT
FORMING UTILITY
BEAST® SCREED BEAST® HOOK
DRAGO® WRAP VAPOR INTRUSION BARRIERINSTALLATION INSTRUCTIONS
P3 of 3
TURBINE VENTILATORS
CONSTRUCTION SPECIFICATIONS
“A”
THROAT SIZE
GUAGE NO. OF
BRACES
BRACE
MATERIALCROWN GALV.BLADE GALV.THROAT GALV.
4 24 28 26 3 ALUMINUM
6 24 28 26 3 ALUMINUM
8 24 28 26 3 ALUMINUM
10 24 28 26 3 ALUMINUM
12 24 28 24 3 ALUMINUM
14 22 26 24 3 ALUMINUM
16 22 26 24 3 STEEL
18 22 26 24 4 STEEL
20 20 26 24 4 STEEL
24 20 26 22 4 STEEL
DIMENSIONAL AND PERFORMACE DATA
“A”
THROAT SIZE
“B”
HEIGHT
“C”
OVERALL WIDTH
EXHAUSTED
CAPACITY*
APPROX.
SHIPPING WEIGHT
4 12 10 1/4 125 5
6 14 1/2 12 3/4 147 7
8 15 14 1/4 255 8
10 16 1/4 16 1/4 425 11
12 17 19 631 13
14 19 3/4 22 3/4 700 21
16 21 3/4 25 1/2 950 31
18 24 29 1200 38
20 25 1/4 31 5/8 1700 46
24 28 1/4 35 3/4 2350 58
*4 MPHWIND CFM
WAL-RICH CORPORATION • NEW PRODUCT BULLETIN
CALL [phone] · www.wal-rich.com · FAX [phone]
STAINLESS STEEL TERMINATION SCREENS
Ideal for use on high
efficiency heating equipment
Also as condensate trap
screen & vent stack guard.
Patent# D715,409
2202050 2” Stainless Steel Termination Screen
2202052 3” Stainless Steel Termination Screen
2202054 4” Stainless Steel Termination Screen
2202056 6” Stainless Steel Termination Screen
2202060 1” Stainless Steel Termination Screen
Part# Description
made in usa
♦♦♦♦♦Prevent pests, debris, & leaves from entering vent piping
♦♦♦♦♦Push into hub for easy flush installation. No gluing!
♦♦♦♦♦Patented condensate channel prevents buildup & freezing
♦♦♦♦♦Professional grade finish
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
Complian under multiple codes:
AARST-ANSI, ASTM,
IRC Appendix F,
EPA, HUD, and more!
Simple, modern solutions 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 systesm 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 ened 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 teh filter fabric and into the airspace. The airspace does not clog because the filter fabric retains teh 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 hte 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.
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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.
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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
entering. Cap the riser to ensure no
concrete enters. T Riser caps can be
purchased in leui of duct tape. A pres-
tub of PVC pipe can also serve the same
purpose. See steps 8-9 of the previous
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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.
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radon risk
radon-induced lung cancer claims the lives of over 22,000 Americans each year
FACT: Radon is found in all 50 US states. The US EPA action level is 4.0 pci/L or higher
FACT: Homes without basements are still at risk
FACT: Radon is the leading cause of lung cancer among “never smokers”
FACT: Radon is a natural part of the Uranium 238 breakdown chain
FACT: Breathing 6.2 pci/L is the equivalent radiation dosage of a chest x-ray every other day 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
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.

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719-444-0646
1902 Aerotech Drive, Ste 110
Colorado Springs, CO 80916
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