20078_Performance Auto__VIMS Design_20200522

Prepared for
LG 1810 Fordham Blvd, LLC
c/o Leon Capital Group
3500 Maple Avenue, Suite 1600
Dallas, TX 75219
VAPOR INTRUSION MITIGATION
SYSTEM DESIGN
FORMER PERFORMANCE AUTO MALL
FUTURE WEGMANS STORE #140
1810 FORDHAM BOULEVARD
CHAPEL HILL, NORTH CAROLINA
Brownfields Project No: 23078-16-068
Prepared by
Geosynteccl'
consultants
Geosyntec Consultants of NC, P.C.
Geosyntec Consultants of NC, P.C.
2501 Blue Ridge Road, Suite 430
Raleigh, NC 27607
Project Number: GN7075-01
May 2020
GN7075/CAR200052 Wegmans140_VIMS Design Report 5.22.2020

CERTIFICATION PAGE
DESIGN REPORT
FOR THE CONSTRUCTION OF A
VAPOR INTRUSION MITIGATION SYSTEM
FORMER PERFORMANCE AUTO MALL
CHAPEL HILL, NORTH CAROLINA
BROWNFIELDS PROJECT NO.23078-16-068
Prepared by:
R. Matthew Jenny, P.E. (NC)
Engineer
Reviewed by:
Jeff Tyburski, P.G. (NC)
Principal Geologist
PROFESSIONAL ENGINEER SIGNATURE
I, R. Matthew Jenny, a Licensed Professional Engineer for Geosyntec Consultants
of NC, P.C., do certify that the information in this report is correct and accurate to
the best of my knowledge.
Geosyntec Consultants of NC, P.C. is licensed to practice engineering in North
Carolina. The certification number (Firm's License Number) is C-3500.
(H CARD
I
N603�.'
05--12-2020 'A.
INE
R. Matthew Jenny
Engineer
North Carolina P.E. License No. 045603
Expiration Date: 31 December 2020
Geosyntec Consultants of NC, P.C.
2501 Blue Ridge Road Suite 430
Raleigh, NC 27607
Telephone: [phone]
GN7075/CAR200052 Wegmans 140 VIMS Design Report 5.22.2020

TABLE OF CONTENTS
1. INTRODUCTION...................................................................................................... I
1.1. Terms of Reference and Report Organization...................................................1
1.2. Regulatory Setting and Background..................................................................1
1.3. VIMS Design Overview.................................................................................... 2
2. DESIGN BASIS.........................................................................................................4
2.1.
Introduction.......................................................................................................4
2.2.
VIMS Design Framework.................................................................................4
2.3.
Vapor Barrier.....................................................................................................4
2.4.
Vapor Extraction System...................................................................................5
2.4.1 Subslab System Components.................................................................5
2.4.2 Vapor Extraction Fans and Alarms........................................................6
2.4.3 Vapor Monitoring Conduit....................................................................6
2.4.4 Additional Considerations.....................................................................7
3. QUALITY ASSURANCE AND QUALITY CONTROL.........................................8
4. POST-CONSTRUCTION/PRE-OCCUPANCY SYSTEM EFFECTIVNESS
TESTING.................................................................................................................... 9
5. POST -OCCUPANCY SYSTEM EFFECTIVNESS TESTING...............................10
6. FUTURE TENANTS AND BUILDING USES.......................................................11
7. REPORTING............................................................................................................12
8. DESIGN SUBMITTAL EXHIBITS.........................................................................13
LIST OF FIGURES
Figure 1: Site Layout
LIST OF APPENDICES
Appendix A: Construction Drawings
Appendix B: VIMS Materials Sheets
GN7075/CAR200052 Wegmans 140 VIMS Design Report 5.22.2020

LIST OF ACRONYMS
BMS
Building Management System
COC
Constituent of Concern
cDCE
cis-1,2-dichloroethylene
EMP
Environmental Management Plan
Geosyntec
Geosyntec Consultants of NC, P.C.
HVAC
Heating Ventilation and Air Conditioning
LAST
Leaking Above Ground Storage Tank
LCG
Leon Capital Group
LUST
Leaking Underground Storage Tank
NCBP
North Carolina Brownfields Program
NCDEQ
North Carolina Department of Environmental Quality
OBC
Oxy BioChemTM
PCE
Tetrachloroethene
PD
Prospective Developer
PVC
Polyvinyl chloride
QA
Quality Assurance
QC
Quality Control
SDS
Safety Data Sheet
SOG
Slab -on Grade
SSD
Subslab depressurization
SSV
Subslab venting
TCE
Trichloroethene
UST
Underground Storage Tank
VI
Vapor Intrusion
VIMS
Vapor Intrusion Mitigation System
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1. INTRODUCTION
1.1. Terms of Reference and Report Organization
Geosyntec Consultants of NC, P.C. (Geosyntec), has prepared this Vapor Intrusion
Mitigation System (VIMS) Design Report ("VIMS Design" or "Report") on behalf of LG
1810 Fordham Blvd, LLC (Leon Capital Group [LCG]) for the property located at 1810
Fordham Boulevard in Chapel Hill, North Carolina (the Site; Figure 1).
This report presents the basis of the VIMS design for the new Wegmans grocery store
(#140) building at the Site. This report also summarizes the planned installation and
quality assurance/quality control monitoring program for overseeing the system
construction, a conceptual overview of the pre -occupancy and post -occupancy system
performance testing plan, and overall VIMS reporting. The design drawings and
specifications for the VIMS are attached in the appendices. This VIMS package has been
prepared in general accordance with the North Carolina Department of Environmental
Quality (NCDEQ) Brownfields Program Design Submittal New Construction
Requirements Checklist, dated March 2018 (NCDEQ VIMS Design Checklist).
1.2. Regulatory Setting and Background
The subject site is identified as the Former Performance Auto Mall by the North Carolina
Brownfields Program (NCBP) under Project ID 23078-16-068. The Site redevelopment
plan involves the construction of the new Wegmans grocery store (#140). The Site most
recently operated as a Hendrick Automotive (Hendrick) sales and service facility.
Hendrick was a lessee of the property and has since vacated the Site.
The Site is associated with several leaking underground storage tank (LUST) and leaking
above ground storage tank (LAST) events, including a release from a former gasoline
underground storage tank (UST) that was reported on March 28, 1995 and recorded under
UST Incident No. 16492. The chlorinated solvents tetrachloroethylene (PCE) and
associated daughter products (e.g., trichloroethylene [TCE], cis-1,2-dichloroethylene
[cDCE]) have also been detected in Site groundwater. The exact source of the chlorinated
solvents has not been determined but appear to be associated with historical use of the
Site for automotive repair. As a result of the known contamination, and prior to the
acquisition of the property, LCG obtained eligibility to participate as the Prospective
Developer (PD) in the NCBP.
As documented in a June 28, 2019 Environmental Management Plan (EMP)
Implementation Report (2019 EMP Implementation Report) prepared by the John R.
McAdams Company (McAdams), approximately 2,800 tons of petroleum impacted soil
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was reportedly excavated from eight former contaminant source areas during demolition
and grading of the site. As indicated in the 2019 EMP Implementation Report,
confirmation soil sampling was generally effective in removing petroleum impacted
source area soils below applicable regulatory levels. An in -situ chemical oxidant (Oxygen
BioChemTM (OBC+) that was placed into open excavations for two of the source areas
where the excavations appeared to encounter the water table. None of the source areas
were located under the proposed footprint of the grocery store building.
Based upon the environmental Site history, and to evaluate the effectiveness of the above -
mentioned soil excavation/corrective action activities, McAdams collected soil gas
samples from below the proposed new building footprint. This was conducted to obtain
an understanding of vapor intrusion (VI) potential in connection with the proposed
redevelopment activities, and to evaluate the applicability of designing and constructing
a VIMS. The results of McAdams' study are presented in a July 23, 2019 Soil Gas
Assessment Report that was provided to the NCBP. The results of the soil gas assessment
report do not indicate an unacceptable VI risk within the proposed redevelopment
footprint. As a proactive measure, a VIMS was designed for construction beneath the
future building pad.
The proposed building will encompass approximately 100,000 square feet situated along
the eastern boundary of the property (Figure 1). The proposed building foundation
generally includes a slab -on grade (SOG) construction with perimeter footings and
interior column supports. The foundation also includes interior concrete structures to
accommodate floor drains, subsurface utilities, front door windscreens, grease traps and
other features described in the following sections of this report. A 6-inch thick clean (i.e.,
minimal fine-grained material) #57 stone layer will generally underly the concrete slab
floor. Horizontal vent pipe/matting will be installed in the #57 stone layer and will be
connected to vertical risers that will extend to the roof. VIMS-related foundation details
are included in the attached VIMS plan set under Appendix A.
The PD and contractor understand that products with chlorinated solvents shall not be
used for building construction, nor as part of Site operations following occupancy.
Additionally, products containing petroleum compounds (i.e., Site COCs) may not be
used above de minimis levels. Geosyntec will review product sheets on behalf of the PD
and, if challenges arise with these limitations, will communicate with NCBP for
clarification/confirmation on an as -needed basis.
1.3. VIMS Design Overview
The overall intent of the VIMS is to mitigate potential VI risk concerns in connection with
constituents of concern (COCs). To achieve this objective, the following supporting
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objectives were established for the design and implementation of the VIMS.
• Minimize the accumulation of vapors beneath the building foundation by
providing an active sub -slab depressurization (SSD) system beneath the slab -on -
grade concrete.
• Minimize vapor intrusion into building spaces through the slab -on -grade concrete
by providing a subslab vapor barrier to supplement the performance of the SSD
system operation.
Geosyntec understands the NCDEQ VIMS Design Checklist requires a minimum
depressurization below the slab of 4 pascals or greater at remote extents of the VIMS
layout. As such, the collection of pressure differential measurements (above slab and sub-
geomembrane) at discrete points in the vapor extraction venting layer are planned as the
primary mechanism for verifying appropriate system performance. Alternative methods
may also be employed, such as analytical testing at the subslab vapor monitoring points
and/or indoor air sampling, if required based upon the results of the pressure differential
testing, subslab testing, and/or the requirements of the NCBP. Additional detail of the
planned verification methods is presented in Section 5 of this report. If required, these
additional testing methods will be presented in a separate work plan.
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2. DESIGN BASIS
2.1. Introduction
As previously described, the VIMS design generally consists of an active SSD system
inclusive of a vent strip matting network, roof -mounted vapor extraction fans, and a 15-
mil geomembrane vapor barrier installed across the entire building footprint. The new
building construction will generally consist of a 6-inch thick layer of a clean #57 stone
overlain by the 15-mil barrier followed by a 6-inch thick concrete SOG including, in part,
retaining walls, windscreen air pits, dock levelers, and depressed slabs for the frozen food
freezers. The remainder of this section presents the VIMS design framework, including
the design approach used to account for the building -specific structural features.
The design technical specifications are provided on the design drawings in Appendix A,
sheet V-200.
2.2. VIMS Design Framework
The VIMS is comprised of the vapor barrier and vapor extraction systems. From top to
bottom, the system consists of the following (Appendix A: Construction Drawings):
• 6-inch concrete slab;
Vapor Barrier
• 15-mil geomembrane vapor barrier;
• 1-inch thick x 12-inch wide vent matting (e.g.,
GeoVent®) with connection to 6-inch diameter
solid polyvinyl chloride (PVC) vent riser piping; Vapor Extraction System
and
• 6-inch thick layer of 57-stone aggregate
The basis of design for these components is described below.
2.3. Vapor Barrier
The purpose of the vapor barrier is to mitigate VI risk for the proposed building structure.
The vapor barrier will work in conjunction with the underlying SSD system and will
include a geomembrane and concrete slab. The extent of the geomembrane vapor barrier
will include the entire proposed ground floor footprint (Appendix A: Construction
Drawings, V-300). The geomembrane vapor barrier beneath the structure will be
continuous between footings and will consist of a 15-mil Stego® vapor barrier (or
approved equivalent) installed directly above a clean 57-stone aggregate layer and below
the SOG concrete. The vapor barrier requires a taped seam installation and the sealing of
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penetrations, perimeters, and edges are to be followed as specified by the applicable
manufacturer (e.g., double -sided Stego® tape [or equivalent], Stego® mastic [or
equivalent], etc.). Further, the caulking of the concrete slab joints (e.g., control joints,
perimeter slab joints, etc.) shall be performed as shown in the Construction Drawings
(Appendix A). Equivalent barrier materials not specifically listed in this document must
be approved by the engineer of record.
Based upon barrier installation oversight observations, smoke testing may potentially be
recommended by the engineer of record as an additional installation testing method. The
decision to use smoke testing will be based on the contractor's ability to seal around
vertical penetrations and other similar features. No coupon sampling will be required as
the barrier and tape are pre -manufactured in a controlled industrial setting, as opposed to
other types of barriers that are field applied. Section 3 provides detail of the smoke testing
requirements.
2.4. Vapor Extraction System
The vapor extraction system is designed to depressurize the subslab air space and create
a subslab flow network for vapors to be collected prior to being discharged to the
atmosphere at the roof of the building.
2.4.1 Subslab System Components
The vapor extraction system consists of a minimum 6-inch thick clean 57-stone aggregate
layer constructed over the entire building footprint, along with eight (8) 6-inch diameter
Schedule 40 solid PVC vent riser pipes. The vent riser piping is designed to be connected
to individual "strips" of 12-inch wide by 1-inch thick vent matting (e.g., GeoVent®) that
is installed over the 57-stone aggregate and below the geomembrane. The vent matting
network is conceptually similar to trenched -in perforated PVC piping; however, it offers
a comparatively reduced physical footprint and eliminates trenching and backfill
requirements associated with traditional horizontal pipe networks. The 6-inch solid PVC
vent risers will penetrate the SOG concrete, extend along interior building columns, then
penetrate the roof prior to connecting to roof -mounted extraction fans. Upon activating
the eight (8) roof -mounted vapor extraction fans, a vacuum will propagate along the
length of the vertical vent riser piping, through the horizontal vent matting network, and
through the 57-stone aggregate layer to create a relative negative pressure below the
building slab. This negative pressure differential is intended to encourage vapor migration
toward the VIMS network, rather than into the building, prior to discharging to the
atmosphere at the roof. The Construction Drawings (Appendix A) detail the various
aspects of the vapor extraction system.
Exposed piping will be labeled (at a minimum of 10-foot intervals) with the following
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notice: "VAPOR MITIGATION SYSTEM: CONTACT MAINTENANCE TO REPORT
DAMAGE".
2.4.2 Vapor Extraction Fans and Alarms
Eight (8) electrically powered radial fan units are planned for installation on the roof of
the building. The roof -mounted fan locations are shown on Appendix A, Sheet V-301.
Placeholder fan units were specified in the design documents; final fan specifications will
be selected upon the completion of system pilot/influence testing (to be performed after
the concrete slab is poured; Section 4). The fan exhaust discharge pipes will terminate no
closer than 20-feet from operable building openings (e.g., windows, doors, louvers) and
building intakes (e.g., Heating Ventilation and Air Conditioning [HVAC] intakes); 18-
inches above the building roof and immediately adjacent roof; and at least 12-inches
above adjacent parapet walls.
A differential pressure transmitter will be connected to each extraction fan and to the
Building Management System (BMS) to alert maintenance in the instance a fan is no
longer operational. The alarms are designed to actuate in the instance the static pressure
at an individual fan unit drops to zero. Given that no unacceptable human health risks
were identified for the Site (based upon McAdams' 2019 Soil Gas Assessment Report),
the alarm is intended to serve as a notification that an inspection (e.g., mechanical,
electrical) is required. The blowers are intended to operate continuously, 24 hours a day.
2.4.3 Vapor Monitoring Conduit
A series of 1-inch diameter PVC conduits will be installed below the geomembrane and
within the 6-inch aggregate bed for monitoring the system performance. These ports will
provide access to collect pressure differential measurements and/or subslab soil gas
samples as described in Section 4 of this report. Inside the PVC conduit, 1/4-inch diameter
Nylaflow® tubing (or equivalent) will be installed and connected to 6-inch soil gas
implants for collecting pressure differential measurements and soil gas analytical samples
as part of system monitoring. The below-geomembrane conduit penetration will be co -
located with above -slab indoor air reference conduit for collecting differential pressure
readings at each monitoring location. The below geomembrane conduit will penetrate the
slab at its nearest vent riser pipe location; closed cell conduit foam sealant is specified for
the interior annulus of the conduit at or below SOG elevation to support subslab analytical
sampling. The above -slab conduit will begin within I -foot from above the top of the slab
at a given vent riser pipe column. Both the below geomembrane and above slab VIMS
monitoring conduit will be hung parallel to the extraction vent riser piping on the interior
building columns. The conduit will penetrate the roof and then be capped near roof level.
The interior -mounted rigid tubing will be accessible for monitoring system performance
from the roof of the building. The use of the paired conduit/tubing allows for the collection
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of representative pressure differential readings, subslab analytical, and/or indoor air
analytical samples, if necessary. Sheet V-400, V-401, and Detail O on Sheet V-502
provide visuals of the vapor monitoring conduit design (Appendix A).
2.4.4 Additional Considerations
The proposed new building involves several unique structural features that require
additional considerations from a VIMS-perspective. This includes retaining walls,
windscreen and cafe air pits, dock levelers, and depressed slabs for the frozen food
freezers. The geomembrane seal and other considerations are summarized as follows:
• Retaining: Retaining walls are designed at the rear of the building, from C8
to E3 and between columns 7 and 8 (Appendix A, Sheet V-300). This area is
enclosed on only three sides and is open to the outdoors (i.e., there is not a wall
along row 7.8). A vent matting network was not designed for this area of the
building; the geomembrane was retained for conservativism.
• Windscreen and Cafe Air Pits: Two windscreen air pits are designed for the front
entrance of the store, between rows 0 and 1 on the design drawings. A Cafe Air
Pit is also designed between rows 1.8 and 2.1 adjacent to column A.1. These three
pits are designed at a lower elevation in comparison to the surrounding foundation
system and are within the enclosed indoor air space. The geomembrane is
designed to encompass each side of the air pits, including the base of the pits (see
Sheet V-500, Detail D). At each of the air pits, a grate will be installed at finished
floor elevation and an air curtain unit will be installed at ceiling level. The air
curtain is designed to minimize building energy loss and minimize insects and
debris from entering the building. The air curtain unit will supply downward air
pressure into the pits (supplied via the building HVAC system); the pits will act
as a channel to redirect air flow back vertically to supplement the effects of the
curtain. The air curtain mechanism will act as a localized positive pressure source
and supplement the VIMS. Installing vent matting at the base of these pits is
impracticable and is not included as part of the VIMS design given the influence
of the air curtains.
• Dock Levelers and Depressed Freezer Slabs: The dock levelers and freezer slabs
are unique design features that require stepped elevation changes in the foundation
system. The geomembrane is designed to be installed directly beneath the entirety
of these features. The vent matting network is designed around these features
(rather than below), to reduce potential disruptions/head losses in the subslab flow
field.
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3. QUALITY ASSURANCE AND QUALITY CONTROL
Quality Assurance (QA) and Quality Control (QC) measures are necessary to maintain
system integrity during construction activities. Oversight will be conducted by qualified
personnel under the supervision of the PE who designed the VIMS (engineer of record).
Each component of the VIMS will be inspected prior to being covered.
The VIMS is anticipated to be installed in sections based on the layout of the foundation
system and overall construction schedule. An inspection will be performed within each
"construction section", at a minimum, upon completion/preparation of the 57-stone
aggregate base layer, the installation of the vent matting network, the installation of the
geomembrane vapor barrier, and prior to pouring the SOG concrete. Each section of the
VIMS will be inspected prior to being covered. Upon completion of the SOG pour,
additional site visit(s) will be performed to inspect the caulking at expansion joints,
including along the walls -edge of the concrete floor slab. Field logs and photographs will
be documented for each site visit and submitted in final reporting as an appendix.
Based on barrier installation oversight observations, smoke testing may be recommended
by the engineer of record as an additional installation testing method. The decision to use
smoke testing will be based on the contractor's ability to seal around vertical penetrations
and other similar features. If performed, smoke testing will be conducted after the vapor
barrier system has been installed and prior to the floor slab placement. Smoke testing is
conducted by introducing smoke or fog through a small penetration in different locations
of the vapor barrier system. The smoke testing is done to identify unsealed seams, wall
tie-ins or vertical penetrations that may exist in the vapor barrier. If applicable, smoke
will exit vertically through areas that do not have an appropriate seal; the VIMS inspector
will document the penetration points such that the contractor can immediately re -seal the
leak.
Coupon sampling will not be performed as the barrier and tape are pre -manufactured in a
controlled industrial setting as opposed to other types of barriers that are field applied.
Following construction, a final report will be prepared, as approved by the VIMS engineer
of record, that will include a summary of VIMS installation oversight. This report is
discussed in more detail in Section 6.
Upon completion of the system installation, facility maintenance staff and contractors
working in the facility will be notified about the presence of the VIMS to avoid accidental
damage. The VIMS may not be modified or altered without approval from the engineer
of record and the Brownfields Program. VIMS repairs must be approved by the engineer
of record and reported to the Brownfields Program.
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4. POST-CONSTRUCTION/PRE-OCCUPANCY SYSTEM EFFECTIVNESS
TESTING
Per NCBP guidance, pilot/influence testing is required for active systems prior to
occupancy. The testing will be conducted using the pre -installed sampling ports described
under Section 2.4.3 of this report. Upon completion of the installation of the VIMS, a
separate testing work plan will be submitted to the NCBP for review and approval.
The objective of the pre -occupancy effectiveness testing is to document that adequate
pressure differentials of at least 4 pascals can be maintained beneath the slab. As shown
in the Construction Drawings (Appendix A), the vapor monitoring points are located
throughout the building footprint, including in areas relatively remote from suction points.
A temporary blower/fan will be connected to the vertical riser and a micromanometer will
be attached to the monitoring points to check pressure differentials across the building
footprint. Testing will be conducted after the floor slab has been poured to refine the final
blower/fan specification.
Subslab soil gas sampling will also be performed following VIMS construction and prior
to occupancy. Pending further discussions with NCBP, the soil gas sampling may be
performed prior to active system operation to evaluate baseline conditions following
construction of the new building slab; alternatively, soil gas sampling may be performed
while the fan units are operational. Details of the soil gas sampling scope of work will be
discussed under future correspondence with NCBP and will be outlined in a work plan
for submission and approval by the NCBP. An effort will be made to combine the pre-
occupancy pilot/influence effectiveness testing and soil gas sampling scopes of work for
expediency. The PD recognizes that the NCBP may require indoor air sampling based
upon the results of soil gas analytical testing.
The results of the pressure differential pilot/influence testing and subslab soil gas
sampling will be submitted to the NCBP for approval prior to building occupancy. NCBP
approval for building occupancy is contingent upon test results. As such, the testing must
be conducted to provide time for the data to be collected and presented to the NCBP for
approval prior to building occupancy. This will require careful coordination between the
engineer of record, ownership, and the construction team in order to meet NCBP pre-
occupancy testing requirements.
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5. POST -OCCUPANCY SYSTEM EFFECTIVNESS TESTING
Per NCBP guidance, the engineer of record or a designated representative will conduct
pressure differential testing on a monthly basis or as indicated by the NCBP for the first
year of system operation. The readings will be collected from the vapor monitoring
conduit designed for permanent installation below the SOG concrete. The data will be
presented to the NCBP on a quarterly basis for review and approval to demonstrate that
the system is working in general accordance with the design. Issues noted during testing
and inspection of the VIMS will be addressed accordingly. Based on the results of the
first year of testing, the frequency of the pressure testing may be reduced to a quarterly
basis or less as approved by the NCBP.
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6. FUTURE TENANTS AND BUILDING USES
Wegmans will be responsible for property management and day-to-day management for
operation of the VIMS. This will include confirmation that the VIMS fans remain
operational and that work that could potentially damage the VIMS is not to be conducted
without developing a plan for approval by the engineer of record. In the event the VIMS
require modification or repair, the work will be conducted in general accordance with this
design specification package as approved by the engineer of record. The NCBP will be
notified of modifications to the VIMS either on an individual basis, during the monitoring
reporting process, and/or in the annual Land Use Restriction Update form.
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7. REPORTING
Upon completion of post-construction/pre-occupancy system testing, Geosyntec will
prepare a report summarizing the installation, QA/QC measures, post-construction/pre-
occupancy system effectiveness testing, and provide an opinion of whether the VIMS was
delivered in a condition consistent with the VIMS design and specifications. The report
will include inspection documentation (field logs and photographs) as an appendix, as
well as final selected material data sheets for items associated with the VIMS (e.g., vapor
barrier, vent matting material, etc.). The report will also include as -built drawings,
inspection logs, and safety data sheets (SDS') for materials used during construction of
the VIMS (and other trades installing components below the slab), including the concrete
slab, that could potentially contribute to subslab soil gas and/or indoor air background
sources. The report will be signed and sealed by the engineer of record (Licensed North
Carolina PE) and submitted to the Brownfields Program for review and approval. Note
that review and approval of pre -occupancy testing results is required by the NCBP as a
condition for building occupancy. The need for pre -occupancy testing and NCBP
approval for building occupancy should be accounted for in the construction schedule.
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8. DESIGN SUBMITTAL EXHIBITS
The full set of design submittal material sheets is pending. Schedule 40 PVC pipe is
specified, along with #57 stone (as presented in Appendix A, Technical Specifications,
Sheet V-200). The material sheets for "specialty" VIMS items, such as the vent matting
and geomembrane, are provided as Appendix B as a draft. Final material sheets will be
provided under separate cover.
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Site Layout
Q Subject Site Former Performance Auto Mall
Proposed Building N 1810 Durham -Chapel Hill Boulevard
Redevelopment Footprint Chapel Hill, North Carolina
Proposed Parking Area Geosyntec°
consultants Figure
Georry - Conaultan[s UNC, P.C.
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Feet GN7075 February 2020
N:\GN7075 McAdams Services\01 Performance Wegmans\LCG-16000\GIS\VIMS Package\Figure 1 Site Layout.mxd 2/14/2020 3:58:54 PM

APPENDIX A:
CONSTRUCTION DRAWINGS
GN7075/CAR200052_Wegmansl40_VlMS Design Report 5.22.2020

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VAPOR INTRUSION Wegmans store #: 140
MITIGATION SYSTEM DESIGN
1810 FORDHAM BLVD.
CHAPEL HILL, NC 27514
LIST OF DRAWINGS
DRAWING NUMBER
TITLE
V-100
COVER SHEET
V-200
GENERAL NOTES AND SPECIFICATIONS 1 OF 2
V-201
GENERAL NOTES AND SPECIFICATIONS 2 OF 2
V-300
VIMS PLAN LAYOUT
V-301
ROOF LAYOUT
V-400
SECTIONS 1 OF 2
V-401
SECTIONS 2 OF 2
V-500
DETAILS 1 OF 4
V-501
DETAILS 2 OF 4
V-502
DETAILS 3 OF 4
V-503
DETAILS 4 OF 4
Geosyntec Consultants of NC, PC Project #: GN7075mOl
Status: Vapor Intrusion Mitigation System Design
Issue Date: 05/22/2020
THE ACCOMPANYING
ELECTRONIC FILES ARE IN NO
WAY TO BE TAKEN AS A
REPLACEMENT OF COPIES OF
THE OFFICIALLY SEALED
DOCUMENTS. THE INFORMATION
IS SUPPLIED "AS IS" AND ANY
PERSON(S) OR ORGANIZATION(S)
MAKING USE OF OR RELYING
UPON THIS DATA IS RESPONSIBLE
FOR CONFIRMING ITS ACCURACY
AND COMPLETENESS. THESE
FILES ARE NOT STAMPED OR
SEALED AND ONLY DRAWINGS
WITH APPROPRIATE STAMP OR
SEAL ARE TO BE CONSIDERED AS
FINAL.ND SEALED DOCUMENTS.
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THESE DRAWINGS WERE DEVELOPED USING INFORMATION OBTAINED FROM THE PERMIT SET
PROVIDED BY WEGMANS AND ISSUED ON 10/04/2019 FOR STORE #140, PROJECT #189097.0. Store No: 140
THIS DRAWING SET HAS BEEN MODIFIED BY GEOSYNTEC CONSULTANTS OF NC, PC TO PROVIDE V-1 00
DETAILS FOR THE PROPOSED VAPOR INTRUSION MITIGATION SYSTEM DESIGN.3
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SCOPE OF WORK
A.
GENERAL
THIS PACKAGE PROVIDES THE DESIGN OF A VAPOR INTRUSION MITIGATION SYSTEM (VIMS) TO BE
1.
THE WORK DEPICTED ON THESE DRAWINGS SHALL BE PERFORMED BY AN EXPERIENCED
INSTALLED IN A PROPOSED UNDER CONSTRUCTION BUILDING AT 1810 FORDHAM BOULEVARD IN CHAPEL
CONTRACTOR WITH A WORKING KNOWLEDGE OF APPLICABLE CODES, STANDARDS AND
HILL, NORTH CAROLINA (THE SITE). THE SITE IS ASSOCIATED WITH THE NORTH CAROLINA DEPARTMENT
INDUSTRY ACCEPTED STANDARD GOOD PRACTICES.
OF ENVIRONMENTAL QUALITY (NCDEQ) BROWNFIELDS PROGRAM (NCBP) (SITE NUMBER 20078-16-068).
2.
PRODUCTS USED IN THE CONSTRUCTION OF THE BUILDING, INCLUDING BUT NOT LIMITED TO
SOIL GAS ANALYTICAL SAMPLES WERE PREVIOUSLY COLLECTED AT THE SITE; RESULTS OF WHICH DO NOT
ITEMS SPECIFIC TO THE CONSTRUCTION OF THE VIMS, SHALL NOT CONTAIN CHLORINATED
INDICATE AN UNACCEPTABLE VAPOR INTRUSION RISK WITHIN THE PROPOSED BUILDING
SOLVENTS. ADDITIONALLY, SAID PRODUCTS SHALL NOT CONTAIN PETROLEUM -BASED
REDEVELOPMENT FOOTPRINT. THE NCBP PROVIDED CONCURRENCE THAT NO UNACCEPTABLE VAPOR
COMPOUNDS ABOVE DE MINIMIS LEVELS. SAFETY DATA SHEETS (SDS) FOR ITEMS USED FOR
INTRUSION RISKS WERE IDENTIFIED. HOWEVER, AS A PROACTIVE MEASURE, A VIMS WAS DESIGNED FOR
CONSTRUCTION BENEATH THE FUTURE BUILDING PAD. THE DESIGN BASIS FOR THE VIMS IS DESCRIBED
BUILDING CONSTRUCTION (BOTH BELOW SLAB AND PRODUCTS USED TO CONSTRUCT THE SOG
AS FOLLOWS.
CONCRETE) SHALL BE PROVIDED TO THE ENVIRONMENTAL CONSULTANT FOR REVIEW AND
APPROVAL.
A VIMS WILL BE CONSTRUCTED TO REDUCE THE POTENTIAL FOR VAPOR INTRUSION TO INDOOR AIR IN
3.
NOT EVERY CONDITION OR ELEMENT IS OR CAN BE EXPLICITLY SHOWN ON THESE DRAWINGS;
THE NEW BUILDING ENVELOPE. SUB -SLAB VAPORS WILL BE COLLECTED FROM BENEATH THE BUILDING
THEREFORE, THE CONTRACTOR SHALL USE INDUSTRY ACCEPTED STANDARD GOOD PRACTICE
FOOTPRINT AND DISCHARGED TO THE ATMOSPHERE ABOVE THE BUILDING VIA EIGHT ROOF -MOUNTED,
FOR MISCELLANEOUS WORK NOT EXPLICITLY SHOWN.
ELECTRICALLY POWERED EXHAUST FANS.
4.
ALL WORK SHALL BE IN COMPLIANCE WITH FEDERAL, STATE, AND LOCAL BUILDING, FIRE, AND
THE VIMS WILL INCLUDE THE INSTALLATION OF EIGHT 6-INCH DIAMETER PVC SUCTION POINTS INSTALLED
ELECTRICAL CODES.
BELOW THE SLAB ON GRADE (SOG) CONCRETE. THE PVC SUCTION POINTS WILL BE CONNECTED TO A
5.
SEE STRUCTURAL PLANS FOR ALL STRUCTURAL DIMENSIONS AND DETAILS. SEE ARCHITECTURAL
VENT STRIP MATTING NETWORK DESIGNED TO EXTRACT SUB -SLAB SOIL GAS BELOW THE BUILDING. A 6-
PLANS FOR ALL WALL, CEILING, AND ROOF DIMENSION DETAILS.
INCH LAYER OF COMPACTED #57-STONE WILL BE INSTALLED OVER THE SUBGRADE OF THE ENTIRE
BULDING FOOTPRINT. THE VENT STRIP MATTING WILL THEN BE INSTALLED OVER THE COMPACTED
B.
INTENT AND BASIS - PREEMPTIVE ACTIVE SUB -SLAB DEPRESSURIZATION SYSTEM DESIGN
GRAVEL LAYER AS SHOWN IN THE DESIGN DRAWINGS. A 15-MIL GEOMEMBRANE VAPOR BARRIER WILL
BE INSTALLED OVER THE GRAVEL LAYER/VENT STRIP MATTING AND SEALED TO THE BUILDING
1.
GEOSYNTEC HAS DESIGNED A VAPOR BARRIER AND AN ACTIVE VAPOR INTRUSION MITIGATION
FOUNDATION SYSTEM USING MANUFACTURER -APPROVED CONSTRUCTION TAPE AND/OR MASTIC
SYSTEM TO PREVENT SOIL VAPOR CONTAINING VOCS FROM ENTERING THE OCCUPIED BLDG
MATERIAL. THE VENT STRIP MATTING WILL CONNECT TO THE 6-INCH DIAMETER RISER PIPING BELOW
SPACE ABOVE LEVELS OF CONCERN. THE DESIGN INCORPORATES MULTIPLE COMPONENTS TO
THE VAPOR BARRIER MEMBRANE AT EIGHT INTERIOR COLUMN LOCATIONS. THE RISER PIPING WILL
DEPRESSURIZE A LAYER OF GRAVEL INSTALLED BELOW THE CONCRETE FLOOR SLAB.
PENETRATE THE SLAB, RUN ALONG INDIVIDUAL BUILDING COLUMNS, PENETRATE THE ROOF, AND
2.
A GRAVEL LAYER WILL BE INSTALLED ON GRADE IN THE MANNER DESCRIBED IN SECTION C.
CONNECT TO ROOF -MOUNTED ELECTRICALLY -POWERED FAN UNITS. A SERIES OF 1-INCH DIAMETER
SOIL VAPORS THAT COLLECT WITHIN THE GRAVEL LAYER WILL BE EXTRACTED THROUGH EIGHT
CONDUITS WITH Y-INCH DIAMETER TUBING AND SOIL GAS IMPLANTS WILL ALSO BE INSTALLED BELOW
6-INCH DIAMETER SCH 40 PVC SUCTION POINTS SET THROUGH THE FLOOR SLAB. ROOF -
THE GEOMEMBRANE AND WITHIN THE 6-INCH GRAVEL BED FOR MONITORING SYSTEM PERFORMANCE.
MOUNTED ELECTRIC FANS WILL BE USED TO EXTRACT AIR FROM THE GRAVEL LAYER THROUGH
VIMS-SPECIFIC CONDUIT WILL BE HUNG PARALLEL TO THE EXTRACTION RISER PIPING (BOTH SUB -SLAB
RISER PIPES THAT EXTEND BELOW THE SLAB AT THE SUCTION POINTS.
CONDUIT AND INDOOR AIR REFERENCE CONDUIT) AND PENETRATE THE ROOF ADJACENT TO THE
3.
THE EXTRACTED AIR WILL BE EXHAUSTED ABOVE THE ROOF OF THE BUILDING AT LOCATIONS
EXTRACTION PIPES. A VACUUM MONITORING SYSTEM IS PROVIDED FOR EACH EXTRACTION LINE TO
AND IN A MANNER THAT PREVENTS THE AIR FROM ENTERING THE BUILDING.
ALARM SHOULD A FAN FAIL. THE MONITORING SYSTEM IS TO BE CONNECTED TO THE FACILITIES
4.
STRIPS OF VENT MATTING WILL BE PLACED ON TOP OF THE GRAVEL TO ENHANCE MOVEMENT
BUILDING MANAGEMENT SYSTEM (BMS) TO NOTIFY MAINTENANCE IN THE INSTANCE A FAN IS OUT OF
OF AIR IN THE GRAVEL TO THE SUCTION POINTS.
OPERATION. FOLLOWING THE CONSTRUCTION OF THE SOG CONCRETE AND THE BELOW -SLAB SYSTEM
5.
DEPRESSURIZATION OF THE GRAVEL LAYER AND CONTROL OF VAPOR MOVEMENT INTO THE
COMPONENTS, SYSTEM CALIBRATION TESTING WILL BE PERFORMED TO VERIFY THE APPROPRIATE FAN
BUILDING WILL ALSO BE AIDED BY PLACING A LOW PERMEABILITY MEMBRANE ON TOP OF THE
SIZING. THE ANTICIPATED ELECTRICAL SYSTEM REQUIREMENTS FOR THE FANS ARE PROVIDED IN THE
GRAVEL AND VENT MATTING AND IMMEDIATELY BELOW THE CONCRETE SLAB.
DESIGN DOCUMENTS.
6.
THE TYPE AND SIZE OF ELECTRIC FAN REQUIRED TO ADEQUATELY DEPRESSURIZE THE GRAVEL
THE MITIGATION SYSTEM CONSTRUCTION ACTIVITIES WILL INCLUDE THE FOLLOWING:
LAYER WILL BE SPECIFIED BY GEOSYNTEC BASED UPON THE RESULTS OF VACUUM TESTS,
• CONTRACTORS WILL INSTALL AND COMPACT THE 6-INCH #57-STONE GRAVEL LAYER;
PERFORMED BY GEOSYNTEC AFTER PLACEMENT OF THE FLOOR SLAB. FOR BIDDING PURPOSES,
• CONTRACTORS WILL INSTALLTHE VENT MATTING NETWORK, BELOW SLAB CONDUIT PIPING, AND
ASSUME A BASE LEVEL FAN CAPABLE OF 2.4 INCHES WATER COLUMN MAXIMUM VACUUM AND
BELOW -SLAB PVC RISER PIPE CONNECTIONS;
AIR FLOW OF 375 CUBIC FEET PER MINUTE AT 0 INCHES WATER COLUMN ON A 120 VOLT 20
• CONTRACTORS WILL INSTALL THE VAPOR BARRIER GEOMEMBRANE OVER THE ENTIRE BUILDING
AMP CIRCUIT (E.G., RADONAWAY RP-265).
FOOTPRINT;
C.
GRAVEL LAYER
• CONTRACTORS WILL SEAL THE SLAB PENETRATION CONDUIT LOCATIONS (BOTH VIMS AND NON-
VIMS RELATED CONDUIT) IN ACCORDANCE WITH THE DESIGN DOCUMENTS;
1.
THE GRAVEL LAYER SHALL BE A MINIMUM OF 6 INCHES THICK OVER THE ENTIRE EXTENT OF THE
• CONTRACTORS WILL INSTALL VIMS RISER PIPING AND ABOVE -SLAB VIMS CONDUIT WITHIN THE
CONCRETE FLOOR SLAB AS SHOWN ON DRAWING V-500.
BUILDING ENVELOP AND THROUGH THE ROOF MEMBRANE FOR EXTERIOR FAN MOUNTING;
2.
THE GRAVEL LAYER SHALL BE COMPACTED USING A PLATE COMPACTOR OR OTHER VIBRATORY
• CONTRACTORS WILL CONNECT THE SYSTEM ALARMS TO THE INDIVIDUAL RISER PIPES, WHICH
COMPACTION DEVICE PRIOR TO PLACING THE GEOMEMBRANE AND VENT MATTING.
WILL ALSO BE CONNECTED TO THE BMS FACILITIES CAGE; AND
3.
THE GRAVEL SHALL CONSIST OF WASHED PARTICLES.
• CONTRACTORS WILL INSTALL THE SPECIFIED FAN UNITS ON THE ROOF OF THE BUILDING IN
4.
THE GRAVEL SHALL BE HARD, DURABLE, AND NOT SUBJECT TO DETERIORATION.
ACCORDANCE WITH THE DESIGN DOCUMENTS FOLLOWING SYSTEM CALIBRATION TESTING.
5.
THE GRAVEL SHALL CONFORM TO AASHTO #57 AGGREGATE OR EQUIVALENT. ALTERNATIVE
GRADATION MAY BE REQUESTED BY THE CONTRACTOR SUBJECT TO APPROVAL BY GEOSYNTEC.
Sieve Size
(sieves with square
openings)
Grading Requirements for Coarse
Aggregates (% Passing)
AASHTO #57
Nominal size is 1 to % inch
(25.0 to 12.5 mm)
1-1/2-in (37.5 mm)
100
1-in (25 mm)
95-100
-in (12.5 mm)
25-60
#4 (4.76 mm)
0-10
#8 (2.38 mm)
0-5
VENT MATTING
1. VENT MATTING SHALL CONIST OF A THREE-DIMENSIONAL FLEXIBLE POLYPROPYLENE CORE AND A
NON -WOVEN GEOTEXTILE FILTER FABRIC. THE VENT MATTING SHALL MEET THE FOLLOWING
REQUIREMENTS AND MINIMUM VALUES:
P-R OP E RTI E S
TEST METHOD
VALUE
DIMPLED CORE
Co re M ateri a I
Po I yP ro pyl erne
Co I -a r
Black
Co ni p ressive stren th
. 1TM D 1621
916 0lu PS: '4-6 S INN/m�
Thickness
.4,--TM -1777
1 h.
Flow rate
j A 1TM iD -47 t b
30 r fri,/ft. -of 4p i d th
FILTER FABRIC
L D"R puncture
A1T1y1. 0 6241
260 Ibs.
Grab tenAIe stre-,in ,h
. 1TM D 4632
100 Ibs
A05
A 3TM D 47.51
70 U.S. sieve
Pe rm itivity
ASTIVI D 4491
-
2.0 see -1
Flow rate
A1TM D 4491
140 m./ft'
UV resista rI:e
.ASTM D 4355
7u'3566 hrs.
Di nieris i o,)s: 16.5' K i211x 111
Weight: 65 pounds
2. VENT MATTING SHALL BE INSTALLED PER DRAWING V-300 AND ACCORDING TO THE DETAILS ON
DRAWINGS V-500 THROUGH V-502.
3. VENT MATTING SHALL BE INSTALLED FLAT IN THE HORIZONTAL POSITION WITH THE FABRIC SIDE
FACING DOWN EXCEPT AS SHOWN OTHERWISE ON DRAWING V-501.
4. VENT MATTING MUST BE OVERLAPPED A MINIMUM OF 12-INCHES WHEN CONNECTED END TO
END. WHEN CONNECTED PERPENDICULARLY, VENT MATTING SHALL OVERLAP A MINIMUM OF 18
INCHES.
5. UNDULATIONS IN THE VENT MATTING, WHICH MAY IMPEDE THE PASSAGE OF GAS, SHALL NOT BE
PERMITTED.
6. THE VENT MATTING SHALL BE KEPT FREE OF DIRT, MUD, AND OTHER MATERIALS THAT COULD
REDUCE THE AIR PERMEABILITY OF THE MAT.
"a. _1.1.41:1.1
1. MEMBRANE BARRIER SHALL MEET THE FOLLOWING MINIMUM REQUIREMENTS:
• MINIMUM THICKNESS PER AC1302.1R-04:15MILS
• PERMEANCE PER ASTM F 1249: LESS THAN 0.01 PERMS [GRAINS/(SF x HR. x IN. HG)] AS
TESTED AFTER CONDITIONING TESTS PER ASTM E 1745 SECTION 7.1
• PUNCTURE RESISTANCE PER ASTM D 1709: 2200 GRAMS
• TENSILE STRENGTH PER ASTM D 882: 70 LB-FT/IN
2. INSTALLATION OF THE MEMBRANE SHALL COMPLY WITH THE MANUFACTURER'S
SPECIFICATIONS AND RECOMMENDATIONS.
3. SOIL STOCKPILES, GRAVEL BAGS, NAILS, POSTS, AND/OR STAKES SHALL NOT BE USED TO ANCHOR
THE MEMBRANE AT ANYTIME.
4. THE MEMBRANE SHALL BE INSTALLED BELOW THE ENTIRE CONCRETE FLOOR SLAB AND
ATTACHED TO THE INNER FACE OF THE EXTERIOR FOUNDATION WALLS, AS SHOWN ON THE
DETAILS ON DRAWING V-500 THROUGH V-503.
5. PIPES, ELECTRICAL CONDUITS, AND OTHER PENETRATIONS THROUGH THE MEMBRANE SHALL BE
SEALED USING TAPED SLEEVES OR BOOTS IN ACCORDANCE WITH MANUFACTURER
RECOMMENDATIONS AS SHOWN ON DETAIL P ON DRAWING V-502.
6. PROPER INSTALLATION OF THE MEMBRANE MUST BE VERIFIED BY GEOSYNTEC PRIOR TO
PLACEMENT OF THE CONCRETE FLOOR SLAB.
7. SECTIONS OF PLYWOOD OR OTHER APPROVED METHODS SHALL BE EMPLOYED BY THE
CONTRACTOR TO PROTECT THE UNDERLYING MEMBRANE, SHOULD EQUIPMENT BE REQUIRED TO
TRACK OVER THE MEMBRANE. CONSTRUCTION EQUIPMENT (E.G., SKID STEERS, TRUCKS) SHALL
NOT COME IN DIRECT CONTACT WITH THE GEOMEMBRANE AT ANY TIME.
8. STAKES (E.G., CONCRETE FORM ANCHORS) SHALL NOT PENETRATE THE MEMBRANE.
9. STAKES USED TO SUPPORT SUBSLAB PIPING PRIOR TO POURING THE SLAB (E.G., PLUMBING,
CONDUIT, ETC.) SHALL NOT BE HOLLOW.
10. THE CONTRACTOR SHALL TAKE ALL PRECAUTIONS NECESSARY TO AVOID CONTAMINATION OF
THE MEMBRANE BY SOLVENTS AND FUELS. IF SOLVENTS AND/OR FUELS ARE SPILLED ON OR
OTHERWISE IMPACT THE MEMBRANE, THE CONTRACTOR SHALL REMOVE AND REPLACE THE
IMPACTED SECTIONS OF THE MEMBRANE AND ANY ADDITIONAL IMPACTED MATERIALS (ROCK,
SUBGRADE, VENT MATTING, ETC.) TO THE SATISFACTION OF THE ENVIRONMENTAL CONSULTANT.
THE MANAGEMENT OF THE CONTAMINATED MATERIALS SHALL BE CONDUCTED IN ACCORDANCE
WITH APPLICABLE STATE AND FEDERAL REGULATIONS.
F. RISER PIPES AND PRESSURE DIFFERENTIAL MONITORING CONDUIT
1. RISER AND SUB -SLAB PRESSURE DIFFERENTIAL MONITORING CONDUIT (PRESSURE MONITORING
CONDUIT) PIPES SHALL BE INSTALLED AT THE LOCATIONS SHOWN ON DRAWING V-300 AND
ACCORDING TO THE DETAILS ON DRAWING V-400, V-401, V-501 AND V-502.
2. THE RISER PIPES AT SUCTION POINTS AND PRESSURE MONITORING CONDUIT SHALL RISE
VERTICALLY TO THE CEILING THEN EITHER 1) RUN HORIZONTALLY BELOW THE CEILING TO THE
ROOF PENETRATION POINTS AS SHOWN ON DRAWING V-301 AND V-400; OR 2) CONTINUE
VERTICALLY AND PENETRATE AT THE COLUMN AS SHOWN ON V-301 AND V-401. FOLLOWING
THE ROOF PENETRATION, THE VERTICAL RISER PIPES SHALL EXTEND ABOVE THE ROOF AND
CONNECT TO ROOF -MOUNTED ELECTRICALLY POWERED FAN UNITS, AS SHOWN ON SECTION
DRAWINGS V-400 AND V-401. THE PRESSURE MONITORING CONDUIT SHALL TERMINATE ON
THE ROOF AS SPECIFIED IN SECTION F.12.
3. THE TOTAL LENGTH OF PIPE AND NUMBER OF FITTINGS BETWEEN THE FLOOR PENETRATION
POINT AND THE ROOF EXHAUST POINT SHALL BE MINIMIZED TO THE EXTENT PRACTICAL TO
REDUCE FRICTION LOSSES IN THE PIPE.
4. RISER PIPES AND PRESSURE MONITORING CONDUIT SHALL BE:
a. SCHEDULE 40 PVC.
b. ALL PVC PIPING CONNECTIONS SHALL BE SOLVENT CEMENTED AND PERMANENTLY SEALED
USING A PRIMER MEETING THE REQUIREMENTS OF ASTM F656 AND A SOLVENT MEETING
THE REQUIREMENTS OF ASTM D2564. JOINTS SHALL BE MADE WHILE THE SOLVENT IS WET
AND SHALL BE IN ACCORDANCE WITH ASTM D2855 AND ASTM F402.
THESE DRAWINGS WERE DEVELOPED USING INFORMATION OBTAINED FROM THE PERMIT SET
PROVIDED BY WEGMANS AND ISSUED ON 10/04/2019 FOR STORE #140, PROJECT #189097.0.
THIS DRAWING SET HAS BEEN MODIFIED BY GEOSYNTEC CONSULTANTS OF NC, PC TO PROVIDE
DETAILS FOR THE PROPOSED VAPOR INTRUSION MITIGATION SYSTEM DESIGN.
THE ACCOMPANYING
ELECTRONIC FILES ARE IN NO
WAY TO BE TAKEN AS A
REPLACEMENT OF COPIES OF
THE OFFICIALLY SEALED
DOCUMENTS. THE INFORMATION
IS SUPPLIED "AS IS" AND ANY
PERSON(S) OR ORGANIZATION(S)
MAKING USE OF OR RELYING
UPON THIS DATA IS RESPONSIBLE
FOR CONFIRMING ITS ACCURACY
AND COMPLETENESS. THESE
FILES ARE NOT STAMPED OR
SEALED AND ONLY DRAWINGS
WITH APPROPRIATE STAMP OR
SEAL ARE TO BE CONSIDERED AS
FINAL.ND SEALED DOCUMENTS.
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c. PVC PRIMER AND CEMENT SHALL NOT CONTAIN CHLORINATED SOLVENTS. ADDITIONALLY,
SAID PRODUCTS SHALL NOT CONTAIN PETROLEUM -BASED COMPOUNDS ABOVE DE
MINIMIS LEVELS. SDS' FOR PROPOSED PRODUCTS SHALL BE SUBMITTED TO THE
ENVIRONMENTAL CONSULTANT FOR REVIEW AND APPROVAL.
5. RISER PIPES AND PRESSURE MONITORING CONDUIT SHALL BE INSTALLED PRIOR TO THE
FORMATION OF THE INTERIOR COLUMN BASE (IDENTIFIED AS POUR #1 IN DESIGN SHEET S203)
AND EXTEND BELOW THE CONCRETE FLOOR SLAB ACCORDING TO DETAIL M ON DRAWING V-
501. A VERTICAL STRIP OF VENT MATTING SHALL BE ATTACHED TO THE OPEN END OF THE
RISER PIPE AS SHOWN ON DETAIL M AND EXTEND UP AND CONNECT TO THE HORIZONTAL VENT
MATTING STRIP.
6. THE RISER PIPES AND PRESSURE MONITORING CONDUIT SHALL BE INSTALLED IN COMPLIANCE
WITH THE MECHANICAL AND PLUMBING DRAWINGS FOR THIS PROJECT INCLUDING, BUT NOT
LIMITED TO, ANY PIPE WRAP AND FIRE STOP REQUIREMENTS, ALL APPLICABLE BUILDING AND
FIRE CODES, AND SHALL BE TIED- OFF (I.E., VERTICALLY SUPPORTED) AT EACH FLOOR. AT A
MINIMUM:
a. VERTICAL PIPE RUNS SHALL BE SUPPORTED AT LEAST EVERY 10 FEET AND AT EVERY
PENETRATION THROUGH SLABS, CEILINGS, OR ROOF DECKS.
b. HORIZONTAL RUNS SHALL BE SUPPORTED AT LEAST EVERY 6 FEET WITH CODE APPROVED
HANGERS. HORIZONTAL RUNS SHALL BE SUPPORTED WITHIN TWO FEET OF EACH FITTING.
7. HORIZONTAL PIPE RUNS SHALL SLOPE A MINIMUM OF 1/8" PER FOOT RUN TO ENSURE THAT
ANY CONDENSATION OR MOISTURE IN THE PIPE WILL DRAIN TOWARD THE VERTICAL RISER AND
FLOOR PENETRATION.
8. THE RISER PIPE STUBS AND EACH VERTICAL AND HORIZONTAL RUN OF RISER MUST BE MARKED
OR LABELED "VAPOR MITIGATION SYSTEM: CONTACT MAINTENANCE TO REPORT DAMAGE"
AT 10-FOOT INTERVALS TO ENSURE PROPER IDENTIFICATION OF THE PIPES DURING AND AFTER
CONSTRUCTION.
9. THE EXHAUST POINT OF THE RISER PIPE ABOVE THE ROOF SHALL BE AT LEAST:
a. 20 FEET HORIZONTALLY FROM ANY HVAC AIR INTAKES OR OTHER OPENINGS INTO THE
BUILDING,
b. 18 INCHES ABOVE THE BUILDING ROOF AND IMMEDIATELY ADJACENT ROOF,
C. 12 INCHES ABOVE ADJACENT PARAPET WALLS IF WITHIN 20-FEET OF A PARAPET WALL, AND
d. TWO FEET ABOVE HVAC AIR INTAKES WITHIN 20 FEET OF THE EXHAUST POINT.
10. REFER TO THE MECHANICAL AND PLUMBING DRAWINGS FOR TYPICAL ROOF PENETRATION
DETAILS.
11. A VARMINT GUARD OR APPROVED EQUIVALENT SHALL BE INSTALLED ON THE TOP OF THE FAN
EXHAUST PIPE AS SPECIFIED IN SECTION DRAWINGS V-400 AND V-401.
12. THE 1-INCH DIAMETER PVC PRESSURE MONITORING CONDUIT SHALL BE CAPPED AS FOLLOWS:
a. THE INDOOR AIR ("ABOVE -SLAB") 1-INCH DIAMETER REFERENCE CONDUIT SHALL BE
CAPPED ABOVE THE FLOOR SLAB WITH A SCREEN AS SPECIFIED ON SECTION DRAWINGS V-
400 AND V-401.
b. THE SUB -SLAB 1-INCH DIAMETER PVC CONDUIT SHALL BE CONSTRUCTED AS SPECIFIED ON
DRAWING V-5021 DETAIL 0, AND AS DESCRIBED AS FOLLOWS. THE 1-INCH DIAMETER PVC
CONDUIT SHALL BE CAPPED IN THE GRAVEL BLANKET WITH A MINIMUM OF 2-INCHES OF
GRAVEL AROUND THE ENTIRETY OF THE CONDUIT. A 5/16" HOLE SHALL BE FIELD -FIT
THROUGH THE END OF THE PVC CAP FOR CONNECTING THE %" O.D. NYLAFLOW TUBING TO
A 6" LONG SOIL GAS IMPLANT (GEOPROBE AT86 WITH COMPRESSION FITTING). THE END OF
THE SOIL GAS IMPLANT SHALL BE SOLID WITHOUT AN EXPENDABLE ANCHOR POINT. AT
ROOF LEVEL, A SHUT OFF VALVE SHALL BE SUPPLIED AT THE TERMINAL END OF THE TUBING
TO SUPPORT SOIL GAS ANALYTICAL SAMPLING AS SHOWN ON V-400 AND V-401.
c. BOTH SUB -SLAB AND INDOOR AIR REFERENCE CONDUIT SHALL BE CAPPED WITH SOLID PIPE
CAPS ON THE ROOF OF THE BUILDING.
d. CLOSED CELL CONDUIT FOAM SEALANT SHALL BE APPLIED INSIDE THE SUBSLAB CONDUIT
AND AROUND THE EXTERIOR OF THE X" O.D. TUBING AT OR BELOW SOG ELEVATION AS
INDICATED ON DRAWING V-5031 DETAIL R AND REFERENCED ON V-400 AND V-401.
13. A MINIMUM OF 2-INCHES OF GRAVEL SHALL BE PLACED AROUND THE ENTIRETY OF THE 1-INCH
DIAMETER SUB -SLAB PRESSURE MONITORING CONDUIT.
14. THE ABOVE -SLAB AND SUB -SLAB PRESSURE MONITORING TUBING SHALL BE LABELED WITH THE
PROBE ID AS DEFINED ON V-300 AND V-301. TUBING LABELS SHALL BE APPLIED, AT A
MINIMUM, WITHIN 1-FT OF THE TERMINAL END OF EACH SECTION OF TUBING.
15. TUBING SPLICES SHALL BE MINIMIZED. IF REQUIRED, TUBING SHALL BE SPLICED WITH
COMPRESSION FITTINGS AS INDICATED ON DRAWING V-5031 DETAILS.
ELECTRIC FAN
1. AN IN -LINE ELECTRIC FAN CAPABLE OF DEVELOPING AT LEAST 2.4 NICHES OF WATER COLUMN
VACUUM AT ZERO AIR FLOW AND 375 CFM AIR FLOW AT ZERO DEVELOPED VACUUM ON A 120
VOLT 20 AMP CIRCUIT SHALL BE INSTALLED ON EACH RISER PIPE THAT EXTENDS ABOVE THE
ROOF. THE EXACT ELECTRIC FAN WILL BE SPECIFIED BY GEOSYNTEC BASED ON THE RESULTS OF
THE VACUUM TEST DESCRIBED IN SECTION J. THE FAN WILL BE PROVIDED WITH ITS OWN
DISCONNECT SWITCH.
2. PROVIDE 120 VOLT ELECTRIC SERVICE WITH A DEDICATED 20 AMP CIRCUIT BREAKER WITHIN
FIVE (5) FEET OF THE RISER PIPE ON THE ROOF TOP.
Ik 10101kfel*, F_LIi7_1W_l'Rk I
1. A SERIES 668 DIFFERENTIAL PRESSURE TRANSMITTER OR APPROVED EQUIVALENT SHALL BE
INSTALLED ON EACH VENT RISER PIPE TO CONTINOUSLY MONITOR FAN OPERATION. TUBING
SHALL BE CONNECTED FROM THE TRANSMITTER TO EACH RISER PIPE USING REINFORCED %-
INCH (INSIDE) DIAMETER TUBING. THE TUBING SHALL BE CONNECTED TO THE RISER PIPE USING
AN APPROPRIATELY SIZED BARBED FITTING.
2. THE DIFFERENTIAL PRESSURE TRANSMITTER SHALL BE CONNECTED TO THE BUILDING
MANAGEMENT SYSTEM (BMS) TO ALERT MAINTENANCE IN THE INSTANCE A FAN IS NO LONGER
OPERATIONAL. THE SYSTEM ALARM SHALL BE CONNECTED AT EACH SUCTION POINT RISER IN
AN ACCESSIBLE LOCATION EXTERIOR TO THE BUILDING (I.E., ON THE ROOF) AS SHOWN IN
SECTIONS V-400 AND V-401. THE DIFFERENTIAL PRESSURE TRANSMITTER SHALL BE
CONSTRUCTED WITHIN A WEATHER -PROOFED UTILITY BOX.
3. PROVIDE 120 VOLT ELECTRIC SERVICE WITH A DEDICATED 15 AMP CIRCUIT BREAKER AT AN
ELECTRICAL JUNCTION BOX WITHIN FIVE (5) FEET OF EACH MITIGATION SYSTEM MONITOR.
4. A PLACARD SHALL BE POSTED ADJACENT TO THE SYSTEM ALARM INDICATING A PHONE
NUMBER TO CONTACT IN THE EVENT OF AN ALARM CONDITION, AND INSTRUCTIONS FOR
SILENCING THE ALARM.
5. THE DIFFERNTIAL PRESSURE TRANSMITTER DEVICE SHALL BE INSTALLED AT LOCATIONS THAT
ARE AMENABLE TO MAINTENANCE AND MONITORING.
I. SEALING OF JOINTS, CRACKS, AND OPENINGS IN THE SLAB
1. THE INTENT OF SEALING IS TO MINIMIZE THE LEAKAGE OF VAPOR BETWEEN THE SUB -SLAB AND
THE INDOOR AIR SPACE OF THE BUILDING.
2. ALL DISCONTINUITIES IN THE FLOOR SLAB, INCLUDING, BUT NOT LIMITED TO, EXPANSION
JOINTS, CONTROL JOINTS, CONSTRUCTION JOINTS, ISOLATION JOINTS, OPEN CRACKS IN THE
FLOOR SLAB, SHALL BE SEALED AT THE FINISHED CONCRETE FLOOR SURFACE USING FLEXIBLE
CAULK SUITABLE FOR USE WITH CONCRETE AND ACCORDING TO THE ARCHITECTURAL
SPECIFICATIONS. PRODUCTS SHALL NOT CONTAIN CHLORINATED SOLVENTS. ADDITIONALLY,
SAID PRODUCTS SHALL NOT CONTAIN PETROLEUM -BASED COMPOUNDS ABOVE DE MINIMIS
LEVELS. SDS' FOR PROPOSED PRODUCTS SHALL BE SUBMITTED TO THE ENVIRONMENTAL
CONSULTANT FOR REVIEW AND APPROVAL.
3. THE ANNULUS OF ALL EDGE OF SLABS AT BUILDING PERIMETER WALLS, ALL UTILITIES, PIPES,
AND OTHER CONDUITS THAT PENETRATE THE FLOOR SLAB, INCLUDING THE SUB -SLAB
DEPRESSURIZATION SYSTEM RISER PIPES, SHALL BE SEALED WITH A URETHANE CAULK
ACCORDING TO MANUFACTURER'S RECOMMENDATIONS.
4. ALL OPENINGS IN THE FLOOR SLAB GREATER THAN 0.5 INCH SHALL BE SEALED USING SUITABLE
EXPANDING FOAM SEALANTS.
5. URETHANE CAULK SHALL COMPLY WITH FEDERAL SPECIFICATION TT-5-00230C (E.G., PECORA
CORPORATION'S DYNATROL I -XI OR TREMCO'S VULKEM 116) AND FIRE CODES AS APPLICABLE.
J. SPECIAL INSPECTIONS AND TESTS
1. THE PLACEMENT OF THE GRAVEL, VENT MATTING, MEMBRANE, RISER PIPE STUBS, AND UTILITY
PENETRATION BOOTS SHALL BE INSPECTED BY GEOSYNTEC PRIOR TO POURING OF FLOOR SLAB
CONCRETE. THE CONTRACTOR SHALL PROVIDE GEOSYNTEC AT LEAST ONE WEEK NOTICE
BEFORE REQUESTED INSPECTIONS OF THE ATTACHMENT OF A STRIP OF MEMBRANE TO THE
FOUNDATION, AFTER THE GRAVEL AND VENT MATTING MATERIALS HAVE BEEN PLACED, AND
PRIOR TO THE PLACEMENT OF THE MEMBRANE. GEOSYNTEC WILL NOTIFY NORTH CAROLINA
BROWNFIELDS PROGRAM (NCBP) OF UPCOMING INSPECTIONS FOR INFORMATION. UNDER NO
CIRCUMSTANCES SHOULD WORK STOP BASED ON A RESPONSE (OR LACK OF RESPONSE) FROM
NCBP.
2. THE CONTRACTOR SHALL ARRANGE FOR GEOSYNTEC TO PERFORM A VACUUM TEST ON THE
COMPLETED FLOOR SLAB AFTER ALL JOINT, PENETRATION, CONDUIT, AND OTHER SEALING
REQUIRED BY THESE DESIGNS HAS BEEN COMPLETED, AND BEFORE FLOOR COVERINGS ARE
PLACED. THE CONTRACTOR SHALL PROMPTLY SEAL ANY LEAKS IN THE FLOOR SLAB IDENTIFIED
BY THE VACUUM TEST. THE RESULTS OF THE VACUUM TEST WILL ALSO BE USED BY GEOSYNTEC
TO SPECIFY THE ROOF -MOUNTED FAN TO BE INSTALLED ON THE VERTICAL RISER PIPES SHOWN
IN THESE DRAWINGS.
3. THE CONTRACTOR SHALL ARRANGE FOR GEOSYNTEC TO CHECK THE OPERATION OF SYSTEM
ALARMS BEFORE THE BUILDING IS OCCUPIED.
K. SUBMITTALS
1. SHOP DRAWINGS, MATERIAL SPECIFICATIONS, INSTALLATION INSTRUCTIONS, OPERATION AND
MAINTENANCE INFORMATION, AND WARRANTIES SHALL BE SUBMITTED TO GEOSYNTEC PRIOR
TO FABRICATION, CONSTRUCTION, AND/OR INSTALLATION, AS APPLICABLE, FOR THE
FOLLOWING:
a. GRAVEL
b. VENT MATTING
c. MEMBRANE
d. RISER PIPE MATERIAL AND LOCATIONS (INCLUDING FAN LOCATIONS)
e. URETHANE CAULK AND OTHER SEALANTS
f. VACUUM MONITORS/ALARM AND LOCATION
2. SHOP DRAWINGS AND OTHER SUBMITTALS ARE REVIEWED BY GEOSYNTEC ONLY FOR GENERAL
COMPLIANCE WITH THESE SUB -SLAB DEPRESSURIZATION SYSTEM DRAWINGS. RESPONSIBILITY
FOR CORRECTNESS SHALL REST WITH THE CONTRACTOR. NOTE THAT THE DRAWINGS AND
SPECIFICATIONS HEREIN TAKE PRECEDENCE OVER SHOP DRAWINGS OR OTHER SUBMITTALS
PROVIDED BY THE CONTRACTOR. REQUESTS TO PERFORM MODIFICATIONS SHALL BE
SUBMITTED SEPARATELY FOR GEOSYNTEC'S REVIEW.
L. SUB -SLAB DEPRESSURIZATION SYSTEM INSPECTION AND MAINTENANCE
1. THE OWNER SHALL BE RESPONSIBLE FOR THE ROUTINE OPERATION, INSPECTION, AND
MONITORING OF THE SUB -SLAB DEPRESSURIZATION SYSTEM ACCORDING TO MANUFACTURER
RECOMMENDATIONS, AS APPLICABLE, INCLUDING:
a. INSPECTION AND REPAIR OF SEALS IN THE SLAB, AND SEALING OF ANY NEW CRACKS OR
OPENINGS IN THE SLAB THAT OCCUR; AND
b. IF THE SYSTEM ALARM SOUNDS DURING ACTIVE OPERATION, THE CAUSE OF THE
ALARM SHALL BE DETERMINED AND CORRECTED.
2. THE OWNER SHOULD DESIGNATE A PERSON RESPONSIBLE FOR THE OPERATION, INSPECTION,
MONITORING, AND AS NECESSARY, REPAIR OF THE SUB -SLAB DEPRESSURIZATION SYSTEM
DESCRIBED IN THESE DRAWINGS. THIS PERSON SHOULD BE FAMILIAR WITH THESE DRAWINGS
AND THE OPERATION OF THE FANS AND MONITORING EQUIPMENT.
THE ACCOMPANYING
ELECTRONIC FILES ARE IN NO
WAY TO BE TAKEN AS A
REPLACEMENT OF COPIES OF
THE OFFICIALLY SEALED
DOCUMENTS. THE INFORMATION
IS SUPPLIED "AS IS" AND ANY
PERSON(S) OR ORGANIZATION(S)
MAKING USE OF OR RELYING
UPON THIS DATA IS RESPONSIBLE
FOR CONFIRMING ITS ACCURACY
AND COMPLETENESS. THESE
FILES ARE NOT STAMPED OR
SEALED AND ONLY DRAWINGS
WITH APPROPRIATE STAMP OR
SEAL ARE TO BE CONSIDERED AS
FINAL.ND SEALED DOCUMENTS.
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THESE DRAWINGS WERE DEVELOPED USING INFORMATION OBTAINED FROM THE PERMIT SET
PROVIDED BY WEGMANS AND ISSUED ON 10/04/2019 FOR STORE #140, PROJECT #189097.0.
THIS DRAWING SET HAS BEEN MODIFIED BY GEOSYNTEC CONSULTANTS OF NC, PC TO PROVIDE
DETAILS FOR THE PROPOSED VAPOR INTRUSION MITIGATION SYSTEM DESIGN.

LEGEND:
GEOVENT MAT OR EQUIVALENT
A
1 A.3
22'-6 1/2"
22'-6 1/2"
1
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42'-8"
14'-6 5/8"
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40'-3"
1
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SOIL VAPOR MEMBRANE
VR-1 is 6-INCH DIAMETER PVC VENT RISER PIPE
APPROXIMATE TRENCH LOCATION
❑ APPROXIMATE FREEZER LOCATION
NOTES:
1-INCH DIAMETER SUB -SLAB CONDUIT FOR
SYSTEM MONITORING
SUB -SLAB CONDUIT TERMINATION POINT
I I I X4 I I I I I I I 1. VENT MATTING TO BYPASS TRENCHING NETWORK AND I FREEZERS.
MAXIMUM ALLOWABLE
15'-0" OFFSET OF 10-FEET
x3'-°"THK. I FROM WALL 2. ALL CONCRETE SLABS THAT COME IN CONTRACT WITH
\ � - - MAXIMUM ALLOWABLE I I ' MAXIMUM ALLOWABLE MAXIMUM ALLOWABLE
1'-1°" , I , %C\ ,Q,o OFFSET OF WALL
' I ' I OFFSET OF 10-FEET ' \\ T2 OFFSET OF WALL
THE GROUND SHALL BE LAID OVER A SOIL VAPOR
+ °'o I \ �� ' X I FROM WALL I I I FROM WALL I �/� i FROM WALL
_ MEMBRANE DESIGNED TO ALLOW THE LATERAL FLOW OF
ILI
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LJ 4 Y3 X' VENT SYSTEM DETAIL.
- - - - -_ - 3
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THESE DRAWINGS WERE DEVELOPED USING
INFORMATION OBTAINED FROM THE PERMIT SET
PROVIDED BY WEGMANS AND ISSUED ON
10/04/2019 FOR STORE #140, PROJECT
#189097.0. THIS DRAWING SET HAS BEEN
MODIFIED BY GEOSYNTEC CONSULTANTS OF NC,
PC TO PROVIDE DETAILS FOR THE PROPOSED
VAPOR INTRUSION MITIGATION SYSTEM DESIGN.
T H E ACCOMPANYING
ELECTRONIC FILES ARE IN NO
WAY TO BE TAKEN AS A
REPLACEMENT OF COPIES OF
THE OFFICIALLY SEALED
DOCUMENTS. THE INFORMATION
IS SUPPLIED `•AS IS" AND ANY
PERSON(S) OR ORGANIZATION(S)
MAKING USE OF OR RELYING
UPON THIS DATA IS RESPONSIBLE
FOR CONFIRMING ITS ACCURACY
AND COMPLETENESS. THESE
FILES ARE NOT STAMPED OR
SEALED AND ONLY DRAWINGS
WITH APPROPRIATE STAMP OR
SEAL ARE TO BE CONSIDERED AS
FINAL.ND SEALED DOCUMENTS.
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LEGEND:
m PROPOSED ROOF MOUNTED FAN LOCATION
PROPOSED BELOW ROOF 6-INCH DIAMETER
PVC VIMS PIPING
VR-10 PROPOSED BELOW ROOF VIMS PIPING
(VERTICAL AT COLUMN)
NOTE:
1. VARY AS APPROPRIATE TO SATISFY VIMS-SPECIFIC
OFFSET DISTANCE REQUIREMENTS AS WELL AS THE
REQUIREMENTS OF OTHER APPLICABLE TRADES (E.G.,
MEP, STRUCTURAL, ARCHITECT, LOCAL BUILDING
CODES, ETC.).
1 0-1 / \` I 1 X., /
o-- - - - - - - - - - - -T- I - - - -
— — — — _ ---� -
8 1/2"
7.3 / i) 1 SUBSLAB MONITORING POINT (SSP-1)
-_ ____- VARIES - 2'_6"
-
ii) 1 ABOVE -SLAB MONITORING POINT (ASP-1) - I i) 1 SUBSLAB MONITORING POINT (SSP-3) _
� ------ (SEE NOTE 1)
ii) 1 ABOVE -SLAB MONITORING POINT (ASP-3)
VR-1
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T H E ACCOMPANYING
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REPLACEMENT OF COPIES OF
THE OFFICIALLY SEALED
DOCUMENTS. THE INFORMATION
IS SUPPLIED "AS IS" AND ANY
PERSON(S) OR ORGANIZATION(S)
MAKING USE OF OR RELYING
UPON THIS DATA IS RESPONSIBLE
FOR CONFIRMING ITS ACCURACY
AND COMPLETENESS. THESE
FILES ARE NOT STAMPED OR
SEALED AND ONLY DRAWINGS
WITH APPROPRIATE STAMP OR
SEAL ARE TO BE CONSIDERED AS
FINAL.ND SEALED DOCUMENTS.
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MODIFIED BY GEOSYNTEC CONSULTANTS OF NC,
Store No:
140
PC TO PROVIDE DETAILS FOR THE PROPOSED
VAPOR INTRUSION MITIGATION SYSTEM DESIGN.
V-301

: \CN7075\CAD\SHEET FILES\V-400-SECTIONS
CONTINGENT VAPOR
MITIGATION FAN TO BE
SPECIFIED BY GEOSYNTEC
AFTER TESTING
SUPPORT PIPE AND VAPOR FAN AS
REQUIRED BY STATE OR LOCAL CODE -
PRESSURE DIFFERENTIAL
TUBING CONNECTED TO RISER
PIPE USING BARBED FITTING
SERIES 668 DIFFERENTIAL PRESSURE
TRANSMITTER OR APPROVED
EQUIVALENT (SEE NOTE 2 AND NOTE 3)
LABEL PIPE (SEE DRAWING
V-503, NOTE F)
LABEL PIPE (SEE DRAWING
V-503, NOTE F)
6-INCH DIA. PVC RISER PIPE
6" SLAB ON GRADE (TYP.)
SEE STRUCTURAL DRAWINGS
PROVIDE PIPE BOOT FOR SEAL
(RISER AND CONDUIT) SEE DETAIL
P
V-50
• STONE
1°
AGGREGATE
CONCRETE FOOTING SEE
STRUCTURAL DRAWINGS
MINIMUM
20'
TO ANY HVAC RTU OR
OPENING
INTO
BUILDING
MINIMUM 10'
TO
ANY WALL INCLUDING
PARAPET
(ALL
DIRECTIONS)
VARMINT GUARD PIPE CAP
WITH SCREEN, 6-INCH RAVEN
TVS6SS PVC TERMINATION
VENT (OR APPROVED EQUAL)
GRID
COORDINATE ROOF
� ROOF TOP PENETRATION WITH
i �. ARCHITECTURAL DRAWINGS
SLOPE
VARIES
/6-INCH DIA. PVC
RISER PIPE (TYP.)
1-INCH DIA. ABOVE SL
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20'
TO ANY HVAC RTU OR
OPENING
INTO
BUILDING
MINIMUM 10'
TO
ANY WALL INCLUDING
PARAPET
(ALL
DIRECTIONS)
12"-INCH MINIMUM ABOVE PARAPET WALL OR 2'-0"
ABOVE TOP OF HVAC RTU PANEL OR HVAC AIR
INTAKES WITHIN 20 FEET OF THE VENT OUTLET,
WHICH EVER IS THE GREATER ELEVATION
PROVIDE 120v AC 20amp
SERVICE TO WITHIN 5' OF FAN
3/8-INCH THREADED NPT PORT FOR
SAMPLING ACCESS; STAINLESS STEEL
CAP SCREW REQUIRED TO PLUG HOLE
^'_1LUMN FLANGE \
NCH DIAMETER
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)NDUIT WITH
-INCH O.D.
'LAFLOW TUBING
=E NOTE 4)
12-INCH (MAX.)
6-INCH SLAB /
ON GRADE
12" (MIN.)
TWO 1-INCH
DIAMETER PVC
CONDUIT ROOF
PENETRATION
POINTS
--1-INCH DIAMETER PVC
CONDUIT WITH 1/4-INCH
O.D. NYLAFLOW TUBING
2-INCH
DIA. PVC
THREADED PVC PIPE CAPS
FOR SAMPLING ACCESS
1/4" NPT FEMALE x FEMALE
BRASS BALL VALVE
1/4" TUBE O.D. x 1/4 NPT
MALE YOR-LOK FITTING
1/4 11 0. D .
NYLAFLOW
TUBING
2-FT. (MIN)
(INSET NOTE 2)
3/8" THREADED NPT
PORT WITH STAINLESS
STEEL SCREW CAP TO
PLUG HOLE
I 1/4" TUBE O.D. x THREADED
2" TO 1" 1/4 NPT MALE PVC CAP
PIPE YOR-LOK FITTING
REDUCER
1-INCH TUBING IDENTIFICATION
DIA. PVC SHALL BE APPLIED AT
TERMINAL END OF TUBING
TO ROOF
PENETRATION
VLL VL I /"AIL
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NOTE 5 BELOW)
1-INCH DIAMETER PVC
ABOVE -SLAB PIPING LAY UT
POLYUREA CAULK
(SEE ARCHITECTURAL
SPECIFICATIONS)
SEE DETAIL
0
V-50
L1-INCH DIAMETER PVC CONDUIT
WITH 1/4-INCH O.D. NYLAFLOW
TUBING (SEE NOTE 1)
\\-GEOVENT MAT OR EQUIVALENT
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RISER PIPE (SEE NOTE 1)
NOTES:
1. REFER TO DETAILS V-501 M AND V-502 P FOR SPECIFICATION REQUIREMENTS RELATED TO THE RISER PIPE AND CONDUIT
PENETRATION DETAILS.
2. PRESSURE DIFFERENTIAL TRANSMITTER (E.G., SERIES 668 OR AN APPROVED EQUIVALENT) SHALL BE CONNECTED DIRECTLY
TO EACH VENT RISER PIPE FOR CONTINUOUS MONITORING OF FAN OPERATION. UNIT TO BE CONNECTED TO THE FACILITY BMS
TO ALERT MAINTENANCE IF FAN IS NO LONGER OPERATIONAL.
3. PRESSURE DIFFERENTIAL UNITS SHALL BE SECURED ON THE ROOF IN A WEATHER -PROOFED UTILITY BOX.
4. 1-INCH DIAMETER PVC CONDUIT SHALL BE INSTALLED ON THE COLUMN FLANGE FACING THE BACK SIDE OF THE STORE. SEE
DETAIL V-501 N FOR ADDITIONAL DETAIL.
5. CLOSED CELL CONDUIT SEAL FOAM SHALL BE APPLIED AROUND EXTERIOR OF 1/4" OD TUBING PER R/V503.
6. VAPOR MONITORING TUBING (ABOVE SLAB AND BELOW SLAB) SHALL BE LABELED WITH THE TUBING ID WITHIN 1-FT OF THE
TERMINAL END OF THE TUBING (SEE V-300 AND V-301 FOR TUBING ID'S).
7. ROUTE PIPE TO MINIMIZE LENGTH OF PIPE RUNS AND NUMBER OF FITTINGS.
� 1 SCHEMATIC RISER PIPE SECTION AT COLUMN
(RISERS VR-1 , VR-3 & VR-6)
SCALE = NTS
1/4 11 0. D .
NYLAFLOW
TUBING
NOTES FOR VAPOR MONITORING CONDUIT AT ROOF:
1. THIS INSET DETAIL APPLIES TO THE SUB -SLAB VAPOR MONITORING
CONDUIT/TUBING ONLY (AT ROOF LEVEL).
2. 2-FOOT MINIMUM LENGTH OF 1/4" O.D. TUBING MAY BE ROLLED
INSIDE 2" PVC TO CONSOLIDATE SPACE. BALL VALVE AND TUBING
SHALL BE ACCESSIBLE FOR SAMPLING.
THESE DRAWINGS WERE DEVELOPED USING INFORMATION OBTAINED FROM THE PERMIT SET
PROVIDED BY WEGMANS AND ISSUED ON 10/04/2019 FOR STORE #140, PROJECT #189097.0.
THIS DRAWING SET HAS BEEN MODIFIED BY GEOSYNTEC CONSULTANTS OF NC, PC TO PROVIDE
DETAILS FOR THE PROPOSED VAPOR INTRUSION MITIGATION SYSTEM DESIGN.
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REVISION SCHEDULE
#
DATE
REVISION
0
10/18/2019
DRAFT VIMS DESIGN
1
11/18/2019
VIMS DESIGN DRAWING
2
02/13/2020
VIMS DESIGN DRAWING
(TECH. SPECS. UPDATE)
3
05/22/2020
VIMS DESIGN DRAWING (RESPONSE
TO NCDEQ COMMENTS
CHAPEL HILL #140
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GRID
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MINIMUM 10' TO ANY WALL INCLUDING PARAPET (ALL DIRECTIONS)
CONTINGENT VAPOR
MITIGATION FAN TO BE
SPECIFIED BY GEOSYNTEC
AFTER TESTING
SUPPORT PIPE AND VAPOR FAN AS
REQUIRED BY STATE OR LOCAL CODE -
PRESSURE DIFFERENTIAL
TUBING CONNECTED TO RISER
PIPE USING BARBED FITTING
SERIES 668 DIFFERENTIAL PRESSURE
TRANSMITTER OR APPROVED
EQUIVALENT (SEE NOTE 2 AND NOTE 3)
1/4" NPT FEMALE x FEMALE
BRASS BALL VALVE
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TERMINAL END OF TUBING
TO ROOF
PENETRATION
VARMINT GUARD PIPE CAP
WITH SCREEN, 6-INCH RAVEN
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VENT (OR APPROVED EQUAL)
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NOTES FOR VAPOR MONITORING CONDUIT AT ROOF:
3/8" THREADED NPT
PORT WITH STAINLESS
STEEL SCREW CAP TO
PLUG HOLE
THREADED
PVC CAP
1. THIS INSET DETAIL APPLIES TO THE SUB -SLAB VAPOR MONITORING
CONDUIT/TUBING ONLY (AT ROOF LEVEL).
2. 2-FOOT MINIMUM LENGTH OF 1/4" O.D. TUBING MAY BE ROLLED
INSIDE 2" PVC TO CONSOLIDATE SPACE. BALL VALVE AND TUBING
SHALL BE ACCESSIBLE FOR SAMPLING.
LABEL PIPE (SEE DRAWING
V-503, NOTE F)
6-INCH DIA. PVC RISER PIPE-
6" SLAB ON GRADE (TYP.)
SEE STRUCTURAL DRAWINGS
PROVIDE PIPE BOOT FOR SEAL
(RISER AND CONDUIT) SEE DETAIL
P
V-50
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(TYP.)
CONCRETE FOOTING SEE
STRUCTURAL DRAWINGS
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DIRECTIONS)
i12"-INCH MINIMUM ABOVE PARAPET WALL OR 2'-0"
ABOVE TOP OF HVAC RTU PANEL OR HVAC AIR
INTAKES WITHIN 20 FEET OF THE VENT OUTLET,
WHICH EVER IS THE GREATER ELEVATION
PROVIDE 120v AC 20amp SERVICE TO WITHIN 5' OF FAN
3/8-INCH THREADED NPT PORT FOR
SAMPLING ACCESS; STAINLESS STEEL
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el 12" (MIN.) FOR SAMPLING ACCESS
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ROOF PENETRATION POINTS
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LABEL PIPE (SEE DRAWING
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TUBING (SEE NOTE 4)
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WITH SCREEN
VCH DIAMETER
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-INCH O.D.
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=E NOTE 4)
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V-50
d •
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WITH 1/4-INCH O.D. NYLAFLOW
TUBING (SEE NOTE 1)
�GEOVENT MAT OR EQUIVALENT
6-INCH DIAMETER PVC
RISER PIPE (SEE NOTE 1)
NOTES:
1. REFER TO DETAILS V-501 M AND V-502 P FOR SPECIFICATION REQUIREMENTS RELATED TO THE RISER PIPE AND CONDUIT
PENETRATION DETAILS.
2. PRESSURE DIFFERENTIAL TRANSMITTER (E.G., SERIES 668 OR AN APPROVED EQUIVALENT) SHALL BE CONNECTED DIRECTLY
TO EACH VENT RISER PIPE FOR CONTINUOUS MONITORING OF FAN OPERATION. UNIT TO BE CONNECTED TO THE FACILITY BMS
TO ALERT MAINTENANCE IF FAN IS NO LONGER OPERATIONAL.
3. PRESSURE DIFFERENTIAL UNITS SHALL BE SECURED ON THE ROOF IN A WEATHER -PROOFED UTILITY BOX.
4. 1-INCH DIAMETER PVC CONDUIT SHALL BE INSTALLED ON THE COLUMN FLANGE FACING THE BACK SIDE OF THE STORE. SEE
DETAIL V-501 N FOR ADDITIONAL DETAIL.
5. CLOSED CELL CONDUIT SEAL FOAM SHALL BE APPLIED AROUND EXTERIOR OF 1/4" OD TUBING PER R/V503.
SCHEMATIC RISER PIPE SECTION AT COLUMN
(RISERS VR-2, VR-4, VR-5, VR-7 & VR-8)
SCALE = NTS
ROOF TOP
THESE DRAWINGS WERE DEVELOPED USING INFORMATION OBTAINED FROM THE PERMIT SET
PROVIDED BY WEGMANS AND ISSUED ON 10/04/2019 FOR STORE #140, PROJECT #189097.0.
THIS DRAWING SET HAS BEEN MODIFIED BY GEOSYNTEC CONSULTANTS OF NC, PC TO PROVIDE
DETAILS FOR THE PROPOSED VAPOR INTRUSION MITIGATION SYSTEM DESIGN.
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MATTHEW JENNY LICENSE N0. 045603
REVISION SCHEDULE
#
DATE
REVISION
0
10/18/2019
DRAFT VIMS DESIGN
1
11/18/2019
VIMS DESIGN DRAWING
2
02/13/2020
VIMS DESIGN DRAWING
(TECH. SPECS. UPDATE)
3
05/22/2020
VIMS DESIGN DRAWING (RESPONSE
TO NCDEQ COMMENTS
CHAPEL HILL #140
SECTIONS20F2
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CONTINUOUS SEAL TO
CONCRETE FOUNDATION
REQUIRED USING 2-SIDED
STEGO TACK.
CONCRETE FOOTING SEE
STRUCTURAL DRAWINGS
URETHANE
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TYPICAL INSULATION AT
BUILDING PERIMETER (SEE
ARCHITECTURAL DRAWINGS)
GEOMEMBRANE (15-MIL
STEGO OR EQUIVALENT)
`6" SLAB ON GRADE (TYP.)
SEE STRUCTURAL
DRAWINGS
6"
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(2-SIDED) (SEE NOTE 1)
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SEE STRUCTURAL SCALE = NTS
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FOUNDATION REQUIRED
USING 2-SIDED STEGO TACK.
• j\\/�\/�� CONCRETE FOOTING SEE
STRUCTURAL DRAWINGS
2. GEOMEMBRANE SHALL BE IN
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•
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POLYUREA CAULK
(SEE ARCHITECTURAL
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1/8" WIDE x 2" DEEP
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CONCRETE FOOTING SEE
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NOTE: (2-SIDED) (SEE NOTE 1)
1. MINIMUM 6-INCH CONTINUOUS SEAL TO CONCRETE
FOUNDATION REQUIRED USING 2-SIDED STEGO TACK.
ATYPICAL WINDSCREEN AIR DOOR
PIT TERMINATION DETAIL
SCALE = N7
GEOMEMBRANE (15-MIL STEGO
OR EQUIVALENT); STEGO TACK
(2-SIDED) (SEE NOTE 1)
CONCRETE FOOTING SEE
STRUCTURAL DRAWINGS
ATYPICAL SAW —CUT CONTROL —
ATYPICAL DOCK LEVELER TERMINATION DETAIL —
SCALE = NTS
JOINT DETAIL FOR SLABS
ON GRADE
SCALE = NTS
oI
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THE ACCOMPANYING
ELECTRONIC FILES ARE IN NO
WAY TO BE TAKEN AS A
REPLACEMENT OF COPIES OF
THE OFFICIALLY SEALED
DOCUMENTS. THE INFORMATION
IS SUPPLIED "AS IS" AND ANY
PERSON(S) OR ORGANIZATION(S)
MAKING USE OF OR RELYING
UPON THIS DATA IS RESPONSIBLE
FOR CONFIRMING ITS ACCURACY
AND COMPLETENESS. THESE
FILES ARE NOT STAMPED OR
SEALED AND ONLY DRAWINGS
1 O WITH APPROPRIATE STAMP OR
SEAL ARE TO BE CONSIDERED AS
FINAL.ND SEALED DOCUMENTS.
0.1
r. O
SLAB ON GRADE (TYP.)
=E STRUCTURAL
RAWINGS
611
57-STONE
AGGREGATE
(TYP.)
3EOVENT MAT
)R EQUIVALENT
NDOOR SIDE OF
IVINDSCREEN
�" SLAB ON GRADE (TYP.)
3EE STRUCTURAL
)RAWINGS
6"
57-STONE
AGGREGATE
(TYP.)
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THESE DRAWINGS WERE DEVELOPED USING INFORMATION
OBTAINED FROM THE PERMIT SET PROVIDED BY WEGMANS AND
ISSUED ON 10/04/2019 FOR STORE #140, PROJECT #189097.0. Store No:
THIS DRAWING SET HAS BEEN MODIFIED BY GEOSYNTEC �40
CONSULTANTS OF NC, PC TO PROVIDE DETAILS FOR THE V_500
PROPOSED VAPOR INTRUSION MITIGATION SYSTEM DESIGN.

FINISHED GRAD
CONCRETE FOOTING SEE
STRUCTURAL DRAWINGS
nInTF-
' 1 m THAN E
_K
PICAL INSULATION AT
ILDING PERIMETER (SEE
,CHITECTURAL DRAWINGS)
GEOMEMBRANE (15-MIL
STEGO OR EQUIVALENT)
6" SLAB ON GRADE (TYP.)
SEE STRUCTURAL
DRAWINGS
6"
57-STONE
AGGREGATE
(TYP.)
►MEMBRANE (15-MIL STEGO
EQUIVALENT); STEGO TACK
IDED) (SEE NOTE 1)
1. MINIMUM 6-INCH CONTINUOUS SEAL TO CONCRETE
FOUNDATION REQUIRED USING 2-SIDED STEGO TACK.
ATYPICAL EXTERIOR WALL
FINISH
GRADE
r\InTP:-
TERMINATION DETAIL
SCALE = NTS
TvoICAL INSULATION AT
.DING PERIMETER (SEE
HITECTURAL DRAWINGS)
OMEMBRANE (15-MIL
-GO OR EQUIVALENT)
6" SLAB ON GRADE (TYP.)
SEE STRUCTURAL
DRAWINGS
6"
57-STONE
AGGREGATE
(TYP.)
►MEMBRANE (15-MIL STEGO
=QU IVALENT); STEGO TACK
DED) (SEE NOTE 1)
JCRETE FOOTING SEE
:UCTURAL DRAWINGS
1. MINIMUM 6-INCH CONTINUOUS SEAL TO CONCRETE
FOUNDATION REQUIRED USING 2-SIDED STEGO TACK.
ATYPICAL RETAINING WALL
TERMINATION DETAIL @
COMPACTOR
SCALE = NTS
GRID
URETHANE CAULK
FINISHED GRADE
CONCRETE FOOTING SEE
STRUCTURAL DRAWINGS
NnTF-
POLYUREA CAULK
(SEE ARCHITECTURAL
SPECIFICATIONS)
1. MINIMUM 6-INCH CONTINUOUS SEAL TO CONCRETE
FOUNDATION REQUIRED USING 2-SIDED STEGO TACK.
GEOMEMBRANE (15-MIL
STEGO OR EQUIVALENT)
6" SLAB ON GRADE (TYP.)
SEE STRUCTURAL
DRAWINGS
611
57-STONE
AGGREGATE
(TYP.)
TYPICAL INSULATION AT
BUILDING PERIMETER (SEE
ARCHITECTURAL DRAWINGS)
GEOMEMBRANE (15-MIL STEGO
OR EQUIVALENT); STEGO TACK
(2-SIDED) (SEE NOTE 1)
ATYPICAL EXTERIOR FOOTING
TERMINATION DETAIL
SCALE = NTS
6-INCH DIA. PVC RISER PIPE
GEOMEMBRANE (15-MIL STEGO
OR EQUIVALENT) (SEE NOTE 1)
6" SLAB ON GRADE (TYP.)
SEE STRUCTURAL DRAWINGS
6"
57-STONE _
AGGREGATE
(TYP.)
CONCRETE FOOTING SEE
STRUCTURAL DRAWINGS
POUR #1
PROVIDE PIPE BOOT
SEE DETAIL i"�
GRID
I N
V-501
POLYUREA CAULK
(SEE ARCHITECTURAL
SPECIFICATIONS)
1-INCH DIAMETER PVC
CONDUIT WITH 1/4-INCH
O.D. NYLAFLOW TUBING
GEOVENT MAT
OR EQUIVALENT
PVC PIPE SLEEVE (BOTH 6-INCH
AND 1-INCH) PRIOR TO POUR #1
NOTES:
1. STEGO MASTIC REQUIRED FOR MEMBRANE ATTACHMENT TO ENTIRE CONCRETE PIER FOUNDATION
AROUND COLUMNS.
2. URETHANE CAULK SHALL BE THOROUGHLY APPLIED TO RISER PIPE AND CONDUIT PENETRATIONS
FOLLOWING THE CONSTRUCTION OF THE SLAB ON GRADE CONCRETE.
3. SEE SECTIONS V-400 AND V-401 FOR ABOVE -SLAB PVC CONDUIT LAYOUT.
ATYPICAL RISER PIPE PENETRATION
DETAIL ABOVE FOOTING
SCALE = NTS
URI
FINISHED GRADE
TYPICAL INSULATION AT
ILDING PERIMETER (SEE
.CHITECTURAL DRAWINGS)
GEOMEMBRANE (15-MIL
STEGO OR EQUIVALENT)
6" SLAB ON GRADE (TYP.)
SEE STRUCTURAL
DRAWINGS
611
57-STONE
AGGREGATE
(TYP.)
MEMBRANE (15-MIL STEGO
QUIVALENT); STEGO TACK
DED) (SEE NOTE 1)
JCRETE GRADE BEAM;
STRUCTURAL DRAWINGS
NOTE:
1. MINIMUM 6-INCH CONTINUOUS SEAL TO CONCRETE
FOUNDATION REQUIRED USING 2-SIDED STEGO TACK.
ATYPICAL EXTERIOR GRADE
BEAM TERMINATION DETAIL
SCALE = NTS
BACK SIDE OF STORE
1-INCH DIAMETER
SUB -SLAB PVC CONDUIT
(TYP.) (SEE NOTES 1 AND 2)
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GRID ------" �
6-INCH DIAMETER PVC RISER
PIPE (TYP.) (SEE NOTE 3)
FRONT SIDE OF STORE
THE ACCOM PANYI N G
ELECTRONIC FILES ARE IN NO
WAY TO BE TAKEN AS A
REPLACEMENT OF COPIES OF
THE OFFICIALLY SEALED
DOCUMENTS. THE INFORMATION
IS SUPPLIED "AS IS" AND ANY
PERSON(S) OR ORGANIZATION(S)
MAKING USE OF OR RELYING
UPON THIS DATA IS RESPONSIBLE
FOR CONFIRMING ITS ACCURACY
AND COMPLETENESS. THESE
FILES ARE NOT STAMPED OR
SEALED AND ONLY DRAWINGS
WITH APPROPRIATE STAMP OR
SEAL ARE TO BE CONSIDERED AS
FINAL.ND SEALED DOCUMENTS.
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2. SUB -SLAB PVC CONDUIT SHALL BE INSTALLED ON THE "CAFE,
SEATING SIDE" OF THE COLUMN FLANGE, RELATIVE TO THE o
ABOVE -SLAB PVC CONDUIT. SEE INSET DRAWING IN SECTION V-400
AND V-401. 6
3. 6-INCH DIAMETER RISER PIPING TO BE INSTALLED IN THE COLUMN Icn
J N
WEB ON THE "CAFE SEATING SIDE OF STORE" FOR VR-2, VR-4, AND co
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THESE DRAWINGS WERE DEVELOPED USING INFORMATION OBTAINED FROM THE PERMIT SET
PROVIDED BY WEGMANS AND ISSUED ON 10/04/2019 FOR STORE #140, PROJECT #189097.0. Store No: 140
THIS DRAWING SET HAS BEEN MODIFIED BY GEOSYNTEC CONSULTANTS OF NC, PC TO PROVIDE V-5O1
DETAILS FOR THE PROPOSED VAPOR INTRUSION MITIGATION SYSTEM DESIGN.

2-INCH (MIN.)
2-INCH (MIN.)
SEE DETAIL
("S
V-50
15-MIL GEOMEMBRANE VAPOR BARRIER; GEOPROBE AT86
1-SIDED STEGO TACK REQUIRED AT COMPRESSION
SEAMS (SEE NOTE 1 AND NOTE 2) FITTING (611 LENGTH)
6-INCH SLAB
a a ° ° a a
a
a ° a ° a
°
a a a ° ° a a
a ° a
a a
GEOVENT MAT
OR EQUIVALENT ��\�\�� /
3-INCH (MIN.) /
1-FT. (MAX.)
1/4-INCH O.D. 1-INCH SCH. 40 PVC 1-INCH PVC CAP WITH
NYLAFLOW TUBING CONDUIT (SEE NOTE 3) 5/16" HOLE (SEE NOTE 4)
/4
4
SOLID END CAP
(SEE NOTE 5)
a
° i
COMPACTED GRAVEL BLANKET
UNDER GEOMEMBRANE (MIN. 6
INCHES OF 57 STONE AGGREGATE)
NOTES:
1. GEOMEMBRANE SHALL CONSIST OF ONE LAYER OF STEGO 15 MIL WRAP CLASS A VAPOR BARRIER (MINIMUM) OR EQUIVALENT.
2. SEAMS SHALL OVERLAP AT LEAST ONE FOOT AND BE SEALED WITH STEGO TAPE OR BUTYL ADHESIVE TAPE.
3. A MINIMUM OF 2-INCHES OF GRAVEL SHALL BE PLACED AROUND THE ENTIRETY OF THE 1-INCH DIAMETER SUB -SLAB PRESSURE
MONITORING CONDUIT.
4. 1" PVC CAP SHALL HAVE A FIELD -FIT 5/16" HOLE FOR NYLAFLOW TUBING AND SOIL GAS IMPLANT CONNECTION. HOLE SHALL BE SEALED WITH
TEFLON TAPE WRAPPED AROUND TUBING AND FIT INTO PVC CAP HOLE.
5. END OF SOIL GAS IMPLANT SHALL BE SOLID WITH NO EXPENDABLE ANCHOR POINT.
SUB —SLAB VENT SYSTEM DETAIL
SCALE = NTS
'P.)
611
57-STONE
►GGREGATE
(TYP.)
SEE STRUCTURAL DRAWINGS STRUCTURAL DRAWINGS
NOTE:
1. REFERENCE DRAWING SEE ARCHITECTURAL DRAWING A606, DETAIL 8.
ATYPICAL MEMBRANE DETAIL AT
FROZEN FOOD FREEZERS
SCALE = NTS
POLYPROPYLENE CABLE
TIE OR TAPE OR MASTIC
2" MIN. ABOVE BASE
PENETRATION AS PER
MANUFACTURER'S
SPECIFICATIONS
GEOMEMBRANE
VAPOR BARRIER
6" GRAVEL BLANKET
UNDER MEMBRANE
CONDUIT OR PIPE
PENETRATION --
Vl.J1..JV1 \/""%VL
3" MINIMUM COLLAR EXTENDS
INTO CONCRETE
GAS TIGHT BOOT OR
OTHER APPROVED SEAL
(BUTYL ADHESIVE TAPE,
STEGO TAPE OR STEGO
MASTIC)
TOP OF
CONCRETE SLAB
1. WHERE FOOTINGS, PLUMBING PIPES, ELECTRICAL CONDUITS OR OTHER MATERIALS PENETRATE THE
GEOMEMBRANE VAPOR BARRIER, THE PENETRATIONS SHALL BE SEALED USING SLEEVES OR BOOTS
COMPOSED OF THE SAME MATERIAL OR OTHER APPROVED MATERIALS AND METHODS (SUCH AS
BUTYL ADHESIVE TAPE, STEGO TAPE OR STEGO MASTIC) IN ACCORDANCE WITH THE SPECIFICATIONS
OF THE GEOMEMBRANE VAPOR BARRIER MANUFACTURER.
MEMBRANE PENETRATION DETAIL
SCALE = NTS
THESE DRAWINGS WERE DEVELOPED USING INFORMATION OBTAINED FROM THE PERMIT SET
PROVIDED BY WEGMANS AND ISSUED ON 10/04/2019 FOR STORE #140, PROJECT #189097.0.
THIS DRAWING SET HAS BEEN MODIFIED BY GEOSYNTEC CONSULTANTS OF NC, PC TO PROVIDE
DETAILS FOR THE PROPOSED VAPOR INTRUSION MITIGATION SYSTEM DESIGN.
T H E ACCOMPANYING
ELECTRONIC FILES ARE IN NO
WAY TO BE TAKEN AS A
REPLACEMENT OF COPIES OF
THE OFFICIALLY SEALED
DOCUMENTS. THE INFORMATION
IS SUPPLIED "AS IS" AND ANY
PERSON(S) OR ORGANIZATION(S)
MAKING USE OF OR RELYING
UPON THIS DATA IS RESPONSIBLE
FOR CONFIRMING ITS ACCURACY
AND COMPLETENESS. THESE
FILES ARE NOT STAMPED OR
SEALED AND ONLY DRAWINGS
WITH APPROPRIATE STAMP OR
SEAL ARE TO BE CONSIDERED AS
FINAL.ND SEALED DOCUMENTS.
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THE ACCOMPANYING
ELECTRONIC FILES ARE IN NO
WAY TO BE TAKEN AS A
REPLACEMENT OF COPIES OF
THE OFFICIALLY SEALED
DOCUMENTS. THE INFORMATION
IS SUPPLIED "AS IS" AND ANY
PERSON(S) OR ORGANIZATION(S)
MAKING USE OF OR RELYING
UPON THIS DATA IS RESPONSIBLE
FOR CONFIRMING ITS ACCURACY
AND COMPLETENESS. THESE
FILES ARE NOT STAMPED OR
SEALED AND ONLY DRAWINGS
WITH APPROPRIATE STAMP OR
SEAL ARE TO BE CONSIDERED AS
FINAL.ND SEALED DOCUMENTS.
CONDUIT SEALANT
(SEE NOTE 1)
d ° ° a° ° d
i d
°
d ° ° / ° a
° d d°
d d ° ° ° ` ° % ° d °
° ° ° a d d ,p ° ° °
d —
d ° d
3" MIN OVERLAP
UTILITY WIRE
�r•�mms
1. CLOSED CELL CONDUIT SEAL FOAM
SHALL BE INSTALLED WITHIN OR BELOW
THE BOTTOM OF THE SLAB.
DRY UTILITY CONDUIT
PENETRATION
6-INCH SLAB
d°
d ° d °
a
d d ` d ° 41 °
° d
d ° ° d ° d
d ° d ° ° °
L��1°°°ad °° d° d a ° a
— — — — — — — — --- — — — — — — — —
N
GEOMEMBRANE
VAPOR BARRIER
6-INCH 57 STONE
AGGREGATE (TYP.)
PREPARED SUBGRADE
TYPICAL CONDUIT SEALANT PENETRATION DETAIL
�1�
SCALE = NTS
TUBING IDENTIFICATION
SHALL BE APPLIED WITHIN
1-FOOT OF THE END OF
THE TUBING SECTION
1/4 11 0. D .
NYLAFLOW
TUBING
1-INCH DIA. VIMS
MONITORING CONDUIT
1/4" TUBE O.D. x
1/4 NPT MALE
YOR-LOK FITTING
nlr)TP -
1/4" TUBE O.D. x 1/4 NPT
MALE YOR-LOK FITTING
1/4" NPT FEMALE x FEMALE
BRASS FITTING
1/4 11 0. D .
NYLAFLOW
TUBING
TUBING IDENTIFICATION
SHALL BE APPLIED WITHIN
1-FOOT OF THE END OF
THE TUBING SECTION
1. TUBING SPLICES SHALL BE MINIMIZED TO THE EXTENT PRACTICABLE.
ATYPICAL VAPOR MONITORING TUBING CONNECTION DETAIL —
SCALE = NTS
KinT�C-
A. ALL CONCRETE SLABS THAT COME IN CONTACT WITH THE GROUND SHALL BE LAID
OVER A GAS IMPERMEABLE MEMBRANE AS SHOWN ON DRAWING V-502 (SUB -SLAB
VENT SYSTEM DETAIL) DESIGNED TO ALLOW THE LATERAL FLOW OF SOIL GASES.
B. ALL OPENINGS, GAPS, AND JOINTS IN FLOOR AND WALL ASSEMBLIES IN CONTACT
WITH SOIL OR GAPS AROUND PIPES, TOILETS OR DRAINS PENETRATING THESE
ASSEMBLIES SHALL BE FILLED OR CLOSED WITH MATERIALS THAT PROVIDE A
PERMANENT AIRTIGHT SEAL. SEAL LARGE OPENINGS WITH NON -SHRINK MORTAR,
GROUTS OR EXPANDING FOAM MATERIALS AND SMALLER GAPS WITH AN
ELASTOMERIC JOINT SEALANT, AS DEFINED IN ASTM C920-87. SEALANTS
CONTAINING CHLORINATED SOLVENTS SHALL NOT BE USED. SEE NOTE H BELOW
FOR FURTHER DETAIL ON PRODUCT ALLOWANCES. VENT PIPES SHALL BE
INSTALLED SO THAT ANY RAINWATER OR CONDENSATION DRAINS DOWNWARD
INTO THE GROUND BENEATH THE SOIL OR SOIL -GAS -RETARDED MEMBRANE.
C. 6-INCH DIAMETER OPEN VENT RISER PIPE STARTS ABOVE GEOVENT MATTING AND
BELOW MEMBRANE, SEAL FLANGE TO MEMBRANE.
D. WRAP ALL PIPING WITH APPROVED MATERIAL THROUGH CONCRETE SLAB FLOOR.
E. A 110 VOLT POWER SUPPLY SHALL BE PROVIDED AT A JUNCTION BOX NEAR
EVERY VERTICAL VENT EXIT.
F. PROVIDE PLACARDS ON EACH VENT RISER PIPE WITH MAXIMUM 10-FOOT SPACING
TO READ AS FOLLOWS: " VAPOR MITIGATION SYSTEM: CONTACT MAINTENANCE TO
REPORT DAMAGE".
G. RISER PIPE SHALL BE SUPPORTED ABOVE THE ROOF AS REQUIRED BY LOCAL
CODE.
H. PRODUCTS USED IN THE CONSTRUCTION OF THE BUILDING, INCLUDING BUT NOT
LIMITED TO ITEMS SPECIFIC TO THE CONSTRUCTION OF THE VIMS, SHALL NOT
CONTAIN CHLORINATED SOLVENTS. ADDITIONALLY, SAID PRODUCTS SHALL NOT
CONTAIN PETROLEUM -BASED COMPOUNDS ABOVE DE MINIMIS LEVELS. SAFETY
DATA SHEETS (SDS) FOR ITEMS USED FOR BUILDING CONSTRUCTION (BOTH
BELOW SLAB AND PRODUCTS USED TO CONSTRUCT THE SOG CONCRETE) SHALL
BE PROVIDED TO THE ENVIRONMENTAL CONSULTANT FOR REVIEW AND
APPROVAL.
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THESE DRAWINGS WERE DEVELOPED USING INFORMATION OBTAINED FROM THE PERMIT SET
PROVIDED BY WEGMANS AND ISSUED ON 10/04/2019 FOR STORE #140, PROJECT #189097.0.
THIS DRAWING SET HAS BEEN MODIFIED BY GEOSYNTEC CONSULTANTS OF NC, PC TO PROVIDE
DETAILS FOR THE PROPOSED VAPOR INTRUSION MITIGATION SYSTEM DESIGN.
E
0
503
3

APPENDIX B:
VIMS MATERIAL SHEETS
GN7075/CAR200052_Wegmansl40_VIMS Design Report 5.22.2020

GEOVENT TM
ACTIVE/PASSIVE GAS VENTING SYSTEM
DESCRIPTION
GEOVENTT"' consists of a three-dimensional
vent core that is wrapped in a non -woven,
needle -punched filter fabric.
GEOVENTT"' End Outlets are available for use
in conjunction with GEOVENTT"" active/pas-
sive gas venting systems.
APPLICATION
GEOVENTT"' is designed for use in the fol-
lowing application:
• An active or passive venting when used
with CETCO vapor intrusion mitigation sys-
tems.
BENEFITS
• Installed directly on subgrade eliminating
trenching and potential interference or
damage to existing underground utilities
• Placed in closer proximity to the vapor in-
trusion barrier allowing for more effective
venting of any accumulated gas
• Greater opening area per lineal foot of pipe
and integral filter fabric allows for higher
ventilation efficiency
PACKAGING
GEOVENTT'" is available in the following
packaging option:
• 1 ft. x 165 ft. (0.3 m x 50 m) Rolls
GEOVENTT"' allows for ease of installation
directly on the subgrade, eliminating the need
for costly and labor-intensive trenching.
GEOVENTT"" allows for ease of installation
directly on the subgrade, eliminating the need
for costly and labor-intensive trenching.
CORE PROPERTY TEST METHOD RESULTS
Compressive Strength ASTM D 1621 8,500 - 11,000 psf (407 - 527 kN/m2)
Thickness ASTM D 1777 1.0 in. (2.54 cm)
Flow Rate (Hydraulic gradient = .1) ASTM D 4716 30 gpm/ft width (372 Ipm/m)
BRIC PROPERTY
TEST METHOD
RESULTS
A.O.S.
ASTM D 4751
70 US Sieve (0.212 mm)
Grab Tensile Strength
ASTM D 4632
100 lbs. (0.45 kN)
CBR Puncture Strength
ASTM D 6241
250 lbs. (1.11 kN)
Flow Rate
ASTM D 4491
140 gpm/ft2 (5,704 Ipm/m2)

WOR BARRIER
ETARDERS 07 26 00, 03 30 00 1 VERSION: DEC 10, 2018
a PRODUCT NAME
STEGO WRAP 15-MIL VAPOR BARRIER
® MANUFACTURER
Stego Industries, LLC
216 Avenida Fabricante, Suite 101
San Clemente, CA 92672
Sales, Technical Assistance
Ph: [phone]
[e-mail]
www.stegoindustries.com
® PRODUCT DESCRIPTION
USES: Stego Wrap 15-Mil Vapor Barrier is used as a below -slab vapor barrier.
COMPOSITION: Stego Wrap 15-Mil Vapor Barrier is a multi -layer plastic extrusion manufactured with only high grade
prime, virgin, polyolefin resins.
ENVIRONMENTAL FACTORS: Stego Wrap 15-Mil Vapor Barrier can be used in systems for the control of soil gases
(radon, methane), soil poisons (oil by-products) and sulfates.
TABLE 1: PHYSICAL PROPERTIES OF STEGO WRAP 15-MIL VAPOR BARRIER
ASTM E1745 Class A, B & C- Standard Specification for Water Vapor Retarders
Used in Contact with Soil or Granular Fill under Concrete Slabs
Exceeds Class A, B & C
ASTM F1249 - Test Method for Water Vapor Transmission Rate Through Plastic
Film and Sheeting Using a Modulated Infrared Sensor
0.0086 perms
ASTM E154 Section 8, F1249 - Permeance after wetting, drying, and soaking
0.0098 perms
ASTM E154 Section 11, F1249 - Permeance after heat conditioning
0.0091 perms
ASTM E154 Section 12, F1249 - Permeance after low temperature conditioning
0.0097 perms
ASTM E154 Section 13, F1249 - Permeance after soil organism exposure
0.0095 perms
ASTM D1434 - Standard Test Method for Determining Gas Permeability
192.8 GTR*
Characteristics of Plastic Film and Sheeting
(mL(STP)/m2*day)
K124/02/95
8.8 x 10-12 m2/second
ASTM D1709 - Test Method for Impact Resistance of Plastic Film by
Free -Falling Dart Method
2,266 grams
ASTM D882 - Test Method for Tensile Properties of Thin Plastic Sheeting
70.6 lbf/in
15 mil
width x length:
14' x 140'
area:
1,960 ft2
140 lb
Note: perm unit = grains/(ft2*hr*in-Hg)
*GTR = Gas Transmission Rate

STEGO@ WRAP
0 INSTALLATION
t BARRIER
VAPOR RETARDERS 07 26 00, 03 30 00 1 VERSION: DEC 10, 2018
UNDER SLAB: Unroll Stego Wrap 15-Mil Vapor Barrier over an aggregate, sand or tamped earth base. Overlap all
seams a minimum of 6 inches and tape using Stego® Tape or Stego® Crete Claw® Tape. All penetrations must be sealed
using a combination of Stego Wrap and Stego Accessories.
For additional information, please refer to Stego's complete installation instructions.
0 AVAILABILITY & COST
Stego Wrap 15-Mil Vapor Barrier is available through our network of building supply distributors. For current cost
information, contact your local Stego distributor or Stego Industries' Sales Representative.
0 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 herein. Stego Industries, LLC does offer a limited warranty on Stego
Wrap. Please see www.stegoindustries.com/legal.
0 MAINTENANCE
None required.
0 TECHNICAL SERVICES
Technical advice, custom CAD drawings, and additional information can be obtained by contacting Stego Industries or
by visiting the website.
Email: [e-mail]
Contact Number: [phone]
Website: www.stegoindustries.com
0 FILING SYSTEMS
• www.stegoindustries.com
A * -k-- .
STEGO
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STEGO°TAPE
A STEGO INDUSTRIES, LLC INNOVATION I VAPOR RETARDERS 07 26 00, 03 30 00 1 VERSION: DEC 10, 2018
0 PRODUCT NAME
STEGO TAPE
0 MANUFACTURER
Stego Industries, LLC
216 Avenida Fabricante, Suite 101
San Clemente, CA 92672
Sales, Technical Assistance
Ph: [phone]
[e-mail]
www.stegoindustries.com
0 PRODUCT DESCRIPTION
USES: Stego Tape is a low-permeance tape designed for protective sealing, hanging, seaming, splicing, and patching
applications where a highly conformable material is required. It has been engineered to bond specifically to Stego®
Wrap, making it ideal for sealing Stego Wrap seams and penetrations.
COMPOSITION: Stego Tape is composed of polyethylene film and an acrylic, pressure -sensitive adhesive.
SIZE: Stego Tape is 3.75" x 180'. Stego Tape ships 12 rolls in a case.
APPLICABLE STANDARDS:
Pressure Sensitive Tape Council (PSTC)
• PSTC 101 - International Standard for Peel Adhesion of Pressure -Sensitive Tape
American Society for Testing & Materials (ASTM)
• ASTM El643 - Standard Practice for Selection, Design, Installation, and Inspection of Water Vapor Retarders Used in
Contact with Earth or Granular Fill Under Concrete Slabs
TABLE 4.1: PHYSICAL PROPERTIES OF STEGO TAPE
Note: perm unit = grains/Iftz*hr*in-Hgl

STEGO@ TAPE
A STEGO INDUSTRIES, LLC INNOVATION I VAPOR RETARDERS 07 26 00, 03 30 00 1 VERSION: DEC10, 2018
0 INSTALLATION
SEAMS: Overlap Stego Wrap 6 inches and seal with Stego Tape. Make sure the area of adhesion is free from dust, dirt,
moisture and frost to allow maximum adhesion of the pressure sensitive tape.
PIPE PENETRATION SEALING
1) Install Stego Wrap around pipe by slitting/cutting material
2) If void space around pipe is minimal, seal around base of pipe with Stego Tape (Stego® Mastic can be used for
additional coverage)
DETAIL PATCH FOR PIPE PENETRATION SEALING
1) Cut a piece of Stego Wrap that creates a 6 inch overlap around all edges of the void space
2) Cut an "X" in the center of the detail patch
3) Slide detail patch over pipe, secure tightly
4) Tape down all sides of detail patch with Stego Tape
5) Seal around base of pipe with Stego Tape (Stego Mastic can be used for additional coverage)
Stego Tape should be installed above 40°F. In temperatures below 40°F take extra care to remove moisture or frost
from the area of adhesion.
For additional information, please refer to Stego's complete installation instructions.
0 AVAILABILITY & COST
Stego Tape is available through our network of building supply distributors. For current cost information, contact your
local Stego distributor or Stego Industries' Sales Representative.
0 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 herein. Stego Industries, LLC does offer a limited warranty on Stego
Wrap. Please see www.stegoindustries.com/legal.
0 MAINTENANCE
None required.
0 TECHNICAL SERVICES
Technical advice, custom CAD drawings, and additional information can be obtained by contacting Stego Industries or
by visiting the website.
Email: [e-mail]
Contact Number: [phone]
Website: www.stegoindustries.com
0 FILING SYSTEMS
• www.stegoindustries.com
A * -k-- .
STEGO
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STEGOTACK° TAPE
A STEGO INDUSTRIES, LLC INNOVATION I VAPOR RETARDERS 07 26 00, 03 30 00 1 VERSION: JULY 20, 2018
a PRODUCT NAME
STEGOTACK TAPE
® MANUFACTURER
Stego Industries, LLC
216 Avenida Fabricante, Suite 101
San Clemente, CA 92672
Sales, Technical Assistance
Ph: (8771 464-7834
[e-mail]
www.stegoindustries.com
® PRODUCT DESCRIPTION
USES: StegoTack Tape is a double -sided adhesive strip used to bond and seal Stego® Wrap Vapor Barrier to concrete,
masonry, wood, metal, and other surfaces. StegoTack Tape is a flexible and moldable material to allow for a variety of
applications and installations.
COMPOSITION: StegoTack Tape is made from a blend of synthetic rubber and resins.
SIZE: StegoTack Tape is 2" x 50'. StegoTack Tape ships 12 rolls in a case.
TABLE 4.1: PHYSICAL PROPERTIES OF STEGOTACK TAPE
x 50'
30 mil
0.03 perms
Grey
Synthetic rubber blend
12.5 lb/in width ASTM D1000
40°F/110°F
20°F/+1400F
No VOCs, 100% solids
Note: perm unit = grains/(ft2*hr*in-Hg)
® INSTALLATION
TO WALLS: Make sure the area of adhesion is free of dust, dirt, debris, moisture, and frost to allow maximum adhesion.
Remove release liner on one side and stick to desired surface. When ready to apply Stego Wrap, remove the exposed
release liner and press Stego Wrap firmly against StegoTack Tape to secure.
Cut StegoTack Tape using a utility knife or scissors. Cut StegoTack Tape before removing the release liner for easier
cutting. Install StegoTack Tape between 40°F and 110°F. For additional information please refer to Stego's complete
installation instructions.

ISTEGOTAW TAPE
A STEGO INDUSTRIES, LLC INNOVATION I VAPOR RETARDERS 07 26 00, 03 30 00 1 VERSION: JULY 20, 2018
0 AVAILABILITY & COST
StegoTack Tape is available through our network of building supply distributors. For current cost information, contact
your local Stego distributor or Stego Industries' Sales Representative.
0 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 herein. Stego Industries, LLC does offer a limited warranty on Stego
Wrap. Please see www.stegoindustries.com/legal.
0 MAINTENANCE
For longer adhesive life, store in dry, temperate area.
0 TECHNICAL SERVICES
Technical advice, custom CAD drawings, and additional information can be obtained by contacting Stego Industries or
by visiting the website.
Email: [e-mail]
Contact Number: [phone]
Website: www.stegoindustries.com
0 FILING SYSTEMS
• www.stegoindustries.com
A * -k-- .
STEGO
STET LO

STEGO° MASTIC
STEGO A STEGO INDUSTRIES, LLC INNOVATION I VAPOR RETARDERS 07 26 00, 03 30 00 1 VERSION: JULY 20, 2018
PRODUCT NAME -— -- -
STEGO MASTIC
® MANUFACTURER
Stego Industries, LLC
216 Avenida Fabricante, Suite 101
San Clemente, CA 92672 srEc<�MnsTic
Sales, Technical Assistance
Ph: [phone]
[e-mail]
www.stegoindustries.com
® PRODUCT DESCRIPTION
USES: Stego Mastic is designed to be used as a vapor retardant membrane for use in conjunction with Stego® Wrap
Vapor Barrier/Retarder. Stego Mastic can be used for sealing utility and pipe penetrations in Stego Wrap.
COMPOSITION: Stego Mastic is a medium viscosity, water -based, polymer -modified anionic bituminous/asphalt
emulsion.
SIZE: Stego Mastic comes in 2-gallon or 5-gallon pails, and 20-ounce sausage tubes.
TABLE 1: PHYSICAL PROPERTIES OF STEGO MASTIC
ASTM D412 32 psi
• • . ASTM D412 3860%
ORWI ASTM E154 10% perm loss
ASTM G23 No Effect
ACTM PQA n 17 normc
Note: perm unit = grains/(ftz*hr*in-Hgl

rSTEGO@ MASTIC
A STEGO INDUSTRIES, LLC INNOVATION I VAPOR RETARDERS 07 26 00, 03 30 00 1 VERSION: JULY 20, 2018
0 INSTALLATION
PREPARATION:
• A test application simulating the project environment should always be done prior to final usage of Stego Mastic.
• All surfaces should be dry and free of loose materials, oils and other contaminants. The surfaces should be cleaned
in the same fashion as the test surface in order to ensure proper results.
• Store above 40°F, and apply above 40°F and below 100°F.
PENETRATIONS:
To repair penetrations in Stego Wrap, cut Stego Wrap just big enough to fit over and around the penetration so as to
minimize void space. Liberally apply Stego Mastic around the penetration to keep the integrity of the membrane intact.
Stego Mastic can be applied from sausage tubes with a standard sausage gun and/or from pails by brush, roller, or
trowel.
NOTES: 1) If needed to minimize void space around penetrations, utilize a detail patch of Stego Wrap or Stego° Pre -Cut Pipe Boot to
fit over the penetration and seal the patch/boot with Stego° Tape prior to applying Stego Mastic. 2) Solvent -based products should
not be applied over this product. 31 Clean all tools with kerosene and/or oil -based cleaners.
For additional information, please refer to Stego's complete installation instructions.
0 AVAILABILITY & COST
Stego Mastic is available through our network of building supply distributors. For current cost information, contact your
Local Stego distributor or Stego Industries' Sales Representative.
0 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 herein. Stego Industries, LLC does offer a limited warranty on Stego
Wrap. Please see www.stegoindustries.com/legal.
0 MAINTENANCE
None required.
0 TECHNICAL SERVICES
Technical advice, custom CAD drawings, and additional information can be obtained by contacting Stego Industries or
by visiting the website.
Email: [e-mail]
Contact Number: [phone]
Website: www.stegoindustries.com
0 FILING SYSTEMS
• www.stegoindustries.com
A * L_ .
STEGO
STET LO