26070_Wilkinson Blvd II_VIMP_20230927

Facilities | Environmental | Geotechnical | Materials I

Prepared for:
North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Program
1646 Mail Service Center
Raleigh, North Carolina 27699-1646

Prepared By:

Terracon Consultants
Firm PE/PG License #: F-0869

Prepared for:

Bluestone Coke, LLC
3500 35th Avenue North
Birmingham, Alabama
Vapor Intrusion
Mitigation System Design
Submittal
Wilkinson Boulevard
2198 and 2130 Wilkinson Boulevard
Charlotte, Mecklenburg County, North Carolina
NCBP# 26070-22-060 Revision: 2
September 27, 2023 | Project Number: 71227190
Vapor Intrusion Mitigation System Design Submittal
Wilkinson Boulevard ■ Charlotte, North Carolina
September 27, 2023 ■ Terracon Project No. 71227190

Facilities | Environmental | Geotechnical | Materials i

Table of Contents
1.0 Introduction ............................................................................. 1-1
2.0 Design Basis ............................................................................. 2-3
3.0 Quality Assurance / Quality Control ............................................. 3-6
4.0 Post-Construction / Pre-Occupancy System Effectiveness Testing .... 4-7
5.0 Post-Occupancy Testing ........................................................... 5-11
6.0 Future Tenants & Building Uses ................................................. 6-11
7.0 Reporting ............................................................................... 7-12
8.0 Design Submittal Exhibits ......................................................... 8-12

List of Tables
Table 1 – Summary of Groundwater Sample Analytical Results and Risk Calculations
Table 2 – Summary of Sub-Slab Vapor Analytical Results and Risk Calculations

List of Figures
Figure 1 – Topographic Map
Figure 2 – Site Location Map

Appendices
APPENDIX A Risk Calculator Summary

APPENDIX B VIMS Design

APPENDIX C Nitra-Seal Specifications

APPENDIX D Soil Vapor Sampling Set-Up

Vapor Intrusion Mitigation System Design Submittal
Wilkinson Boulevard ■ Charlotte, North Carolina
September 27, 2023 ■ Terracon Project No. 71227190

Facilities | Environmental | Geotechnical | Materials 1-1

1.0 Introduction
Terracon prepared this Vapor Intrusion Mitigation System (VIMS) design for
installation at the Wilkinson Blvd site (Brownfields Project Number: 26070-22-060)
at 2198 and 2130 Wilkinson Boulevard in Charlotte, Mecklenburg County, North
Carolina (Figure 1). The site consists of 3.398 acres and is identified on the
Mecklenburg County Geographical Information System (GIS) as parcel 067-021-15.
Broadstone West End Venture, LLC (Prospective Developer; PD) will redevelop the
site with a multi-family apartment building with a 406-space parking garage, a
leasing office, a fitness center, a clubhouse, an in-ground pool, a pool courtyard, and
landscaped areas at the site. The development will feature approximately 266,496
square feet of living space spread across 332 tenant units. The on-site structure will
have shallow slab-on-grade foundations. All occupied structures will be underlain by
a VIMS system. The garage will be a cast in-place, separate concrete structure and
will not be underlain by VIMS except for any areas adjacent to or leading to occupied
residential space such as stair towers and elevator shafts, bike storage, etc. The
slab-on-grade foundations will not include post-tension cable reinforcement.

Terracon previously conducted a Phase I Environmental Site Assessment (ESA) at
the site, dated June 8, 2022, which identified the following recognized environmental
conditions (RECs):

1. Petroleum and chlorinated solvent impacts in groundwater under the adjacent
West Morehead Uplift Brownfields property, 150 feet west and topographically
up-gradient of the site.
2. Chlorinated solvent impacts in groundwater under the northern adjacent West
Morehead II Brownfields property.
3. Underground storage tanks (USTs) removed before the North Carolina
Department of Environmental Quality’s (NCDEQ’s) regulatory guidance and
sampling requirements at R.K. Hydro-Vac Services Inc., located adjacent to
the west and topographically up-gradient of the site.

In response to the RECs identified in the Phase I ESA, Terracon collected three
groundwater and two soil vapor samples on the western parcel (2198 Wilkinson
Boulevard). The groundwater samples were analyzed for volatile organic compounds
(VOCs) by Environmental Protection Agency (EPA) Method 8260. The soil vapor
Vapor Intrusion Mitigation System Design Submittal
Wilkinson Boulevard ■ Charlotte, North Carolina
September 27, 2023 ■ Terracon Project No. 71227190

Facilities | Environmental | Geotechnical | Materials 1-2

samples were analyzed for VOCs by TO-15. The results were reported in an LSI report
dated June 23, 2022.

Laboratory analytical results indicated concentrations of benzene, diisopropyl ether,
ethylbenzene, p-isoproplytoluene, 4-methyl-2-pentanone, methylene chloride,
naphthalene, tetrachloroethene (PCE), trichloroethene (TCE), m&p-xylenes, o-
xylene, and total xylenes were detected in groundwater on the southwestern corner
of the site above NCAC 2L Groundwater Standards (2L Standards). Numerous VOCs
were identified in soil vapor samples in the western warehouse, of which naphthalene
was detected at concentrations above the Residential Soil Gas Screening Level
(SGSL).

Soil and additional groundwater and soil vapor sampling were completed throughout
the site in February 2023 as part of Brownfields Data Gap Assessment activities.
Seven soil borings were advanced and samples were collected from to characterize
shallow soils likely to be disturbed during redevelopment; three temporary
monitoring wells were installed to characterize groundwater conditions and calculate
the groundwater flow on the site; and two sub-slab soil vapor samples and four
shallow soil gas sample points were installed to identify potential impacts in proposed
occupied spaces.

According to the Data Gap Assessment results, benzene was detected above its
Protection of Groundwater Preliminary Soil Remediation Goals (PSRGs) in two soil
samples from 3 to 5 feet below ground surface (ft bgs) and 10 to 12 ft bgs. VOCs
were not detected above Residential or Industrial/Commercial PSRGs.
Benzo(a)pyrene was detected in soil from 3 to 5 ft bgs above its Protection of
Groundwater and Residential PSRGs. Arsenic and hexavalent chromium were
detected at concentrations above Residential PSRGs in multiple borings. Multiple
VOCs, 2-methylnaphthalene, and naphthalene were detected above 2L Standards,
Residential and Non-Residential Groundwater Screening Levels (GWSLs) on the
central portion of the site. In addition, barium, chromium, and lead were detected
above 2L Standards. TCE, benzene, ethylbenzene, and naphthalene were detected
above Residential SGSLs from five soil gas sample locations.

The highest groundwater and sub-slab soil vapor concentrations for each compound
detected at the site during the above-described assessments were input into the
NCDEQ risk calculator (July 2023 version). The following carcinogenic risk and hazard
Vapor Intrusion Mitigation System Design Submittal
Wilkinson Boulevard ■ Charlotte, North Carolina
September 27, 2023 ■ Terracon Project No. 71227190

Facilities | Environmental | Geotechnical | Materials 2-3

indices were calculated for the groundwater to indoor air and sub-slab soil vapor to
indoor air exposure pathways:
Exposure Pathway* Carcinogenic Risk Hazard Index
Groundwater to Indoor
Air 1.9 x 10-3 34
Sub Slab Soil Vapor to
Indoor Air 2.0 x 10-5 1.9
*Calculated risk shown is for residential exposure.

The historical groundwater and soil vapor sample locations are shown on Figure 2.
A summary of the soil, groundwater, and soil vapor analytical results are provided
in Tables 1 and 2. Tables 1 and 2 include risk calculations for individual sample
locations; however, a summary of the site-wide risk calculations shown above is
provided in Appendix A.

To decrease the risk of potential vapor intrusion and protect future occupants from
potential vapor intrusion impacts, Terracon designed the VIMS to be installed beneath
the proposed building. The proposed design is included in Appendix B.

The Vapor Intrusion Mitigation System (VIMS) detailed herein is designed to mitigate
intrusion of subsurface vapors into the subject building from known Brownfields
Property contaminants in a manner that is in accordance with the most recent and
applicable guidelines including, but not limited to, DWM Vapor Intrusion Guidance,
Interstate Technology & Regulatory Council (ITRC) guidance, and American National
Standards Institute (ANSI)/American Association of Radon Scientists and
Technologists (AARST) standards. The sealing professional engineer below is satisfied
that the design is fully protective of public health from known Brownfields Property
contaminants.
2.0 Design Basis
The VIMS design will be used to guide construction of the mitigation system. The
VIMS includes the installation of a NCDEQ-approved, spray-applied membrane
beneath ground level portions of the proposed building including at vertical walls (e.g.
elevator shafts) that will be backfilled with soil. The membrane will be a chemical
Vapor Intrusion Mitigation System Design Submittal
Wilkinson Boulevard ■ Charlotte, North Carolina
September 27, 2023 ■ Terracon Project No. 71227190

Facilities | Environmental | Geotechnical | Materials 2-4

barrier against the potential for vapor from contaminants of concern (COCs) identified
at the site (i.e., benzene, 1,2-dichloethene, diisopropyl ether, ethylbenzene 4-
methyl-2-pentanone, naphthalene, PCE, TCE, xylenes, m&p xylenes, and o-xylenes).
The VIMS will be a Nitra-Seal™ barrier system comprised of 23-mil Nitra-Base
geotextile base layer, 40-mil spray-applied Nitra-Core asphaltic latex layer, and 18-
mil Land Science Bond protective HDPE geotextile layer. The Nitra-Seal™ barrier
system specifications are provided in Appendix C. The membrane shall be installed
by a manufacturer certified installation contractor. Installation specifications
including those related to penetration seals, vapor collection piping, sub-slab
monitoring points, VIMS Membrane, and protective layer are provided on Sheets
VI1.01 AND VI1.03 of the attached VIMS design (Appendix B). Additional notes can
be found on Sheet VI0.01.

To the extent practicable, COCs—PCE and TCE in particular—will not be present in
the building materials. Safety data sheets (SDS) will be requested by the general
contractor from the project contractors to document materials used in construction
as well as items associated with the VIMS. SDSs will be submitted to the NCDEQ prior
to the installation of the system.

The VIMS includes a passive mitigation system beneath the ground level occupied
spaces to reduce the potential for vapor intrusion into the building space. There are
three slab-on-grade areas (one at basement level [approximately 18,600 square feet
in area], and two on “Level 1” that are separated by the parking garage [12,000
square feet and 30,600 square-feet, respectively). The system includes multiple
horizontal vent pipes constructed with low-profile vent pipes to collect vapor from the
sub-slab space beneath the building. Sub-slab low profile vapor collection piping,
comprised of a one-inch-thick by 12-inch-wide HDPE piping wrapped in geotextile
fabric, shall be installed. A minimum of 4-inch thick aggregate base layer below the
sub-slab will increase the effectiveness of the sub-slab vapor transmission through
the passive mitigation system. PVC riser pipes will transmit potential vapors to the
roof of the building using pressure-sealed pipe chases within interior walls. The riser
pipe will be labeled at regular intervals (no greater than 10 feet apart), pass through
the building roof, and discharge through roof-mounted exhaust stacks. Turbine
ventilator fans (Aura AV-3 Vent or equivalent) will be installed on the discharge end
of the exhaust stacks. The fans are wind driven and have a rated exhaust capacity of
26 cubic feet per minute in a 4-mph wind.

Vapor Intrusion Mitigation System Design Submittal
Wilkinson Boulevard ■ Charlotte, North Carolina
September 27, 2023 ■ Terracon Project No. 71227190

Facilities | Environmental | Geotechnical | Materials 2-5

The VIMS includes sub-slab vapor monitoring points with specifications and locations
included on the VIMS design in Appendix B. Twenty one of the monitoring points
will be permanent (MP-1 through MP-21) and intended for use as pressure monitoring
points during pilot testing and as sampling points during pre- and post-occupancy
sub-slab soil vapor sampling. Nine of the monitoring points will be temporary (TMP-
1 through TMP-9) and used solely as pressure monitoring points to evaluate pressure
field extension beneath the slab during pilot testing.

Most of the points will be constructed within a 1-1/4-inch diameter HDPE sleeve
extending from the aggregate layer to the top of the slab surface. The individual
points will be constructed with a 5/8-inch threaded rod approximately 12-1/3 inches
in length that will extend approximately 2-inches into the subgrade, through an
approximate 4-inch aggregate layer, 60-mil thick membrane, and 4-inch-thick slab.
A 2-inch long, 1/2-inch diameter Vapor Pin® barb with a 5/8-inch neoprene seal will
be inserted into the 1-1/4-inch diameter sleeve after removal of the threaded rod.
During installation of the aggregate layer, a 5/8-inch threaded rod will be installed
extending from the native soil through the aggregate base and VIMS membrane to
above the proposed slab surface. The threaded rod will be removed after completion
of the VIMS membrane, associated smoke testing, and slab installation. A 1/2-inch
diameter stainless steel Vapor Pin® will be installed in the HDPE sleeve with a
neoprene seal. The above-described construction is depicted in VI3.11 Detail 18 of
the VIMS design in Appendix B. The sampling point will be covered with an air-tight
plastic cap. One sub-slab vapor point will be installed per approximately 5,000 square
feet.

Permanent points located below tenant units will be constructed such that access to
the sample point may be accessed via a flush-mount hand-hole located outside the
building to avoid future concerns with access to occupied rented dwelling space. As
shown in VI3.11 Detail 19 in Appendix B, these points will consist of a ¼-inch
polyethylene stone implant placed within a 2-inch diameter PVC slotted screen. The
slotted screen interval will be wrapped in a geotextile fabric to prevent potential fine-
grained sub-slab material from blocking air flow to the implant. Two-inch PVC will
extend from the screen interval horizontally through the exterior thickened-turndown
slab and turn upward to near the ground surface, daylighting within a flush-mount
hand hole topped by a bolted manway cover. Tubing will run from the implant to the
manway. The interior of the PVC conduit will be sealed adjacent to the screen interval
using a low-VOC caulk material surrounding the sample tubing to prevent water from
Vapor Intrusion Mitigation System Design Submittal
Wilkinson Boulevard ■ Charlotte, North Carolina
September 27, 2023 ■ Terracon Project No. 71227190

Facilities | Environmental | Geotechnical | Materials 3-6

entering the screen interval via the handhold. Pressure monitoring and sampling will
occur by hooking onto the tubing located within the handhole.
3.0 Quality Assurance / Quality Control
For quality assurance and quality control (QA/QC) purposes, Terracon will observe
the VIMS installation activities at various stages of construction. Inspections will be
performed on the aggregate base, sub-membrane sampling points, passive vent
piping installation, VIMS membrane installation, vertical riser piping, and fan
installations. The inspections will be performed under the supervision of the design
PE and no components of the VIMS will be covered without the approval of the design
PE. The inspections will include field logs and photographs. The NCDEQ Brownfields
Program will be given a 48-hour notice prior to conducting the inspections on the
site.

Smoke testing and thickness coupon measurements will be conducted following the
VIMS installation and documented with field logs and photographs. Coupon samples
will be collected by cutting an approximate 2-inch by 2-inch hole in the spray-applied
membrane prior to installation of the top layer to confirm the membrane has been
installed to the proper thickness. Coupon samples will be collected at a frequency of
approximately one per 500 square feet of membrane and measured using a digital
caliper. Where spray-applied membrane is applied to vertical surfaces without
installation of a geotextile layer, blunt nose measurements using a digital caliper will
be made in lieu of coupon sampling.

Smoke testing will be conducted by injecting smoke via shop vac, leaf blower, or
similar device through the coupon holes prior to their repair. Adjustment to the flow
rate of the injection device will be made during the testing to obtain full distribution
of smoke beneath the membrane without generating enough pressure to damage the
membrane seals at seams and terminations. Leaks observed in the membrane will
be repaired and additional smoke tests will be conducted. Smoke testing will continue
until no observable leaks remain within the area of influence. Terracon will submit
the inspection documentation, smoke testing documentation, and coupon testing
documentation to the NCDEQ Brownfields Program.
Vapor Intrusion Mitigation System Design Submittal
Wilkinson Boulevard ■ Charlotte, North Carolina
September 27, 2023 ■ Terracon Project No. 71227190

Facilities | Environmental | Geotechnical | Materials 4-7

4.0 Post-Construction / Pre-Occupancy System
Effectiveness Testing
Under no circumstance shall any portion of the building be occupied in any capacity
or use without prior written approval of compliance from the BRS. BRS’s occupancy
approval is wholly separate from any local, state, or federal occupancy requirements.

Pilot Testing
Following installation of the VIMS piping, vapor membrane, and concrete slab,
Terracon will conduct influence testing on the piping network. Pressure testing will
offer evidence that the piping network is providing sufficient vacuum influence below
the slab. For the pilot influence test, a vapor extraction fan will be attached to a
vertical riser pipe and the other riser pipes will be capped. Fans will be added to one
riser pipe at a time. The permanent and temporary monitoring points will be utilized
as vacuum monitoring points. Each vacuum monitoring point will be capped when not
being used for measurements. Prior to beginning the test, vacuum measurements
will be collected at each sampling point. After recording the baseline condition, the
fan will be turned on and an anemometer will be used periodically to measure the
velocity of the air exiting the blower exhaust. A manometer with units of pascals will
be utilized to periodically record differential pressures at the sample ports. The air
flow measurements at each fan location, and the vacuum measurements from each
sample port will be recorded and reported to DEQ. If the pressure differential readings
indicate depressurization below the slab of 4 pascals or greater within the monitoring
points, the sub-slab will be considered capable of sufficient depressurization, should
the system be required to become active.

Pre-Occupancy Indoor Air Sampling
Due to the TCE exceedances and the carcinogenic and non-carcinogenic risks
exceeded using the NCDEQ Risk Calculator, pre-occupancy sampling will be
conducted as described below. The PD intends to deliver units for occupancy in four
phases, as shown in Appendix C. The pre-occupancy sampling discussed below will
be completed separately within each of the areas denoted on the phasing plan to
allow for phased occupancy of the building.

Once the building has been enclosed and the heating, ventilation, and air condition
(HVAC) has been installed and is operating, Terracon will collect twenty indoor air
samples (IA-01 through IA-21) near the permanent sub-slab monitoring point
locations (MP-1 through MP-21). Each indoor air sample will be collected using an
individually-certified 6-liter Summa® canister placed within the human breathing
Vapor Intrusion Mitigation System Design Submittal
Wilkinson Boulevard ■ Charlotte, North Carolina
September 27, 2023 ■ Terracon Project No. 71227190

Facilities | Environmental | Geotechnical | Materials 4-8

zone (3 to 5 feet above floor level). One outdoor air sample will be collected using a
6-L Summa® canister upwind of the site to provide a comparison between outdoor
and indoor air per phase of sample collection, per 20 samples, and/or per day of
sampling. One blind duplicate sample will also be collected at the same frequency.

The canisters will be obtained from a certified laboratory, certified clean, fitted with
a vacuum gauge, and under a vacuum of 25 to 30 inches of Hg. The canisters will be
fitted with calibrated flow-controllers to collect samples over a duration of
approximately 24 hours. The vacuum of the canister will be recorded periodically
during sample collection. The sample canister valve will be closed when the gauge
measures less than 6 inches of Hg vacuum (i.e., sampling is complete). The final
vacuum will not be allowed to reach 0 inches Hg vacuum and the laboratory will be
asked to report received canister vacuums. The indoor and outdoor air samples will
be analyzed for VOCs via EPA Method TO-15.

Additionally, during the sample collection period, Terracon will also conduct an indoor
air survey within the building to document possible indoor sources of VOCs. Indoor
air will be screened for VOCs using a ppb-capable photo-ionization detector (PID).
The locations and types of construction materials and other possible VOC sources in
the vicinity of the indoor air samples will be documented on a site plan along with
the PID readings encountered in these areas. New construction materials such as
paint, carpet, etc., which could be sources of VOCs in indoor air, may cause
interference with Site-specific compounds during indoor air sampling. Therefore, the
construction contractor will be requested to provide SDSs for materials used during
construction which will be submitted to DEQ if elevated compounds are detected in
indoor air. The contractor(s) shall be instructed to not use building materials that
contain the chlorinated solvents—PCE and TCE in particular—and low VOC products.

Sub-Membrane Soil Gas Testing
Immediately following collection of the indoor air samples, paired sub-membrane soil
gas samples will be collected. One sample each will be collected from sub-slab soil
vapor monitoring points MP-1 through MP-21 within the building using an in-line
purge/sampling train consisting of a batch-certified 1- or 1.4-liter Summa canister
connected to a critical orifice flow restrictor (flow controller), Teflon-line (or
equivalent) tubing, a syringe (purge device), and tedlar bag. Swagelock compression
fittings will be used to connect the tubing and purge device to the remainder of the
sample train. One blind duplicate sample will be collected during each phase of
sampling, per 20 samples, and/or per day of sampling.

Vapor Intrusion Mitigation System Design Submittal
Wilkinson Boulevard ■ Charlotte, North Carolina
September 27, 2023 ■ Terracon Project No. 71227190

Facilities | Environmental | Geotechnical | Materials 4-9

Prior to connection of the sampling train to the sample point, a shut-in (dead-head)
test will be conducted to check for leaks in the above-ground purge/sampling
manifold. The sampling train influent will be sealed, the sampling canister will remain
closed, and a syringe will be used to generate a negative pressure reading of at least
10 inches of mercury on the sampling train pressure gauge. The sample train will be
allowed to sit for approximately 5 minutes, and if there is an observable loss of
vacuum, the fittings will be adjusted until the vacuum in the sample train does not
noticeably dissipate.

Following the shut-in test, the purge/sampling manifold will be connected to the sub-
membrane soil vapor sampling point and a helium tracer gas leak test will be
conducted. The tracer gas serves as a QA/QC method to verify the integrity of the
seal of sampling train to the sample point. An MGD-2002 helium detector (or
equivalent) will be used to verify the presence and concentration of tracer gas. The
protocol for using a tracer gas is to enclose the sampling train and sample point outlet
with a shroud and enrich the shroud atmosphere with at least 10 percent helium. A
minimum of three purge volumes will be evacuated from the sample point using a
syringe. Purged soil gas will be directed to a tedlar bag and at the end of each purge
volume, screened for helium to assess for leaks in the sampling point seal and for
the presence of VOCs with a photoionization detector (PID) (ppbRAE 3000 or
equivalent). The shroud helium concentration and the helium concentration in the
purged soil vapor will be documented after each volume purged.

One purge volume will include the volume of the 5/8-inch previously removed
threaded rod insert minus the Vapor Pin® and neoprene seal volume. Based on this
construction, one purge volume is calculated at approximately 300-400 milliliters
(mL); therefore, at least 900-1200 mL (approximately 3 purge volumes) will be
evacuated from the sample point prior to sample collection. Terracon will adjust the
required purge volume for each sample as needed based on the as-built construction
of each Vapor Pin®. Sample collection will begin if the tracer testing indicates helium
concentrations in the vapor point are less than or equal to 10 percent of the helium
concentration in the shroud following the third purge event, indicating a sufficiently
sealed vapor point annulus. Shut-in test and helium tracer test methods are depicted
on the soil vapor sampling guide in Appendix D.

Following the helium leak test, the valve to the purge device will be closed and the
sample canister valve will be opened to collect soil vapor for laboratory analysis. If a
sample canister is noted to have lost greater than 10% of its initial laboratory vacuum
at the beginning of sampling event, that canister will not be used. The sample will be
Vapor Intrusion Mitigation System Design Submittal
Wilkinson Boulevard ■ Charlotte, North Carolina
September 27, 2023 ■ Terracon Project No. 71227190

Facilities | Environmental | Geotechnical | Materials 4-10

collected at a flow rate less than or equal to 200 mL per minute. The sample canister
valve will be closed when the gauge measures less than 6 inches of mercury (Hg)
vacuum (i.e., when sampling is complete). The final vacuum will not be allowed to
reach 0 inches Hg vacuum.

Laboratory Analytical Program
Following completion of the pre-occupancy sampling activities, the Summa®
canisters, along with chain-of-custody documentation, will be shipped either to Pace
Analytical (East Longmeadow, MA), SGS Global (Dayton, NJ), Eurofins Air Toxics
(Folsom, CA), or Waypoint Analytical (Charlotte, NC) for laboratory analysis of a short
list of VOCs by Environmental Protection Agency (EPA) Method TO-15, depending on
Summa canister availability. The short list of VOCs will consist of those VOCs that
have previously been detected in soil, groundwater, and soil vapor at the site. North
Carolina does not certify laboratories for air analysis; however, the above-listed
laboratories are certified to perform air analyses under the National Environmental
Laboratory Accreditation Program (NELAP) and hold air certifications in States such
as Florida, Virginia, and New Jersey. The laboratory selected will be contacted in
advance of the soil vapor sampling event to ensure that the method detection limits
will be lower than the applicable screening level concentrations to the extent
practical. Terracon will note estimated concentrations between the laboratory
reporting limits and method detection limits (“J-flagged” concentrations), if any, in
the report. In addition, Terracon will request the laboratory record the sample
canister vacuums on the chain-of-custody documentation upon their receipt. A level
2 QA/QC data package will be requested for the indoor air and soil vapor samples.

Upon receipt of the analytical data, the results will be forwarded to the Brownfields
project manager and the most current version of the NCDEQ risk calculator will be
used to evaluate potential vapor intrusion risks for a residential use scenario. In the
case where calculated cumulative risks are less than 1x10-4 for potential carcinogenic
risks and below a hazard index of 1 for potential non-carcinogenic risks, the system
will be considered effective.

The PD acknowledges that the sampling outlined above is a condition to occupancy
of the building, and that DEQ must receive the sampling results and provide its
concurrence prior to occupancy.

Pre-Occupancy Considerations
As discussed above, the NCDEQ Risk Calculator identified unacceptable risk to future
site occupants from the identified groundwater and soil vapor concentrations at the
Vapor Intrusion Mitigation System Design Submittal
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Facilities | Environmental | Geotechnical | Materials 6-11

site, and the PD is pursuing a conservative vapor mitigation plan to mitigate potential
vapor intrusion. Based on the detection of TCE and the carcinogenic and non-
carcinogenic risk exceedances identified by the NCDEQ Risk Calculator, Terracon
proposes a single round of pre-occupancy sub-slab and indoor air sampling be
completed at the site, assuming that analytical results do not identify elevated risk
associated with subsurface and ambient air conditions. If elevated risk is identified
during the pre-occupancy sampling, the BRS will be contacted to discuss whether
additional rounds of sub-slab sampling will be necessary and/or if the system should
be converted into an active system, prior to occupancy being granted.

Following occupancy, semi-annual sampling of sub-slab soil vapor and indoor air will
be conducted for no less than two years, as discussed in Section 5.0 below. The
sampling has the potential to decrease in frequency or cease following two years of
sampling with prior written approval by the BRS based on an evaluation of the
analytical results. The sub-slab sampling will include analyses for the full TO-15 VOC
list (plus naphthalene), while the indoor air sampling analytes will consist of those
compounds previously detected in all media at the site.
5.0 Post-Occupancy Testing
Sub-Slab Vapor and Indoor Air Sampling
As required by NCDEQ, no less than two years of semi-annual paired sub-slab and
indoor air post-occupancy sampling will be conducted. The post-occupancy sampling
has the potential to decrease in frequency or cease entirely following two years of
sampling with prior written approval from BRS based on evaluation of sample results.
The NCDEQ may request changes (or may accept requests for changes) to the
sampling plan based on results from post-construction sampling. The semi-annual
indoor air sampling events will be conducted using the same methodologies described
in Section 4.0 above.
6.0 Future Tenants & Building Uses
The future building use will be residential. After occupancy, the on-site property
management will maintain the VIMS per the Brownfields Agreement, utilizing an
Operations and Maintenance (O&M) plan prepared by Terracon and submitted prior
to building occupancy.

Vapor Intrusion Mitigation System Design Submittal
Wilkinson Boulevard ■ Charlotte, North Carolina
September 27, 2023 ■ Terracon Project No. 71227190

Facilities | Environmental | Geotechnical | Materials 8-12

For building renovations or if VIMS components are exposed or damaged, the
property management will need to contact a North Carolina-licensed PE to oversee
and/or inspect the VIMS repair activities that shall be performed by a certified
installation contractor. If repairs or alterations to the VIMS are required, a report will
be submitted to the BRS detailing those repairs or alterations.
7.0 Reporting
Post-Construction Reporting
Upon completion of substantial portions of the system installation and post-
construction/pre-occupancy testing, Terracon will prepare and submit a report to the
BRS, under the direct supervision of a North Carolina-licensed PE. Analytical data will
be provided to the BRS for their review and consideration in advance of the formal
report. The report will summarize the following:

▪ Summary of VIMS installation;
▪ QA/QC measures;
▪ Post-construction effectiveness testing;
▪ Analytical laboratory results;
▪ NCDEQ Risk Calculator Evaluation; and
▪ An opinion of the VIMS effectiveness.

The appendix portion of the report will include as-built drawings, inspection logs with
photographs and field logs, and SDSs for materials used during construction. The
final report providing post-construction and pre-occupancy sampling results will be
submitted to the BRS no later than 30-days prior to occupancy to the degree possible
that the construction schedule allows.
8.0 Design Submittal Exhibits
Design drawings are provided in Appendix B. Specifications for the Nitra-Seal™
barrier system are provided in Appendix C. The protocol for completing deadhead
tests, helium tracer tests, and sub-slab soil gas sampling is provided in the guide
included in Appendix D.

Facilities | Environmental | Geotechnical | Materials A-1

Tables
Table 1
Summary of Groundwater Analytical Results and Risk Calculations
Wilkinson Boulevard
2198 2130 Wilkinson Boulevard
Charlotte, North Carolina
Brownfields Project Number: 26070-22-060
Terracon Project Number: 71227190
Location/Area:Stormwater Basin Parking Garage Southwestern Portion
Sample ID:TMW-01 TMW-02 TMW-03 TMW-4 TMW-5 TMW-6 TMW-DUP-01
Sample Date:6/7/2022 6/7/2022 6/7/2022 2/15/2023 2/14/2023 2/14/2023 2/14/2023
Depth to Water (DTW):28.6'25.57'27.5'29.75'27.45'30.5'30.5'
Benzene <0.34 <0.34 248 2,460 <0.34 <0.34 <0.34 1 1.6 6.9
2-Butanone (MEK)<4.0 <4.0 <39.6 84.2J <4.0 <4.0 <4.0 4,000 450,000 1,900,000
1,2-Dichlorobenzene <0.34 <0.34 10.4 <6.8 <0.34 <0.34 <0.34 20 530 2,200
1,2-Dichloroethane <0.32 <0.32 <3.2 136 <0.32 <0.32 <0.32 0.4 2.2 9.8
cis-1,2-Dichloroethene <0.38 <0.38 4.2 J 10.0J <0.38 <0.38 <0.38 60 50 210
Diisopropyl ether <0.31 <0.31 81.9 968 <0.31 <0.31 <0.31 70 1,400 5,900
Ethylbenzene <0.30 <0.30 762 369 <0.30 <0.30 <0.30 600 3.5 15
2-Hexanone <0.48 0.86 J <4.8 <9.5 <0.48 <0.48 <0.48 40 1600 6,900
p-Isopropyltoluene <0.41 <0.41 50.7 <8.3 <0.41 <0.41 <0.41 25 NE NE
4-Methyl-2-pentanone (MIBK)<2.7 <2.7 110 236 <2.7 <2.7 <2.7 100 110,000 470,000
Methylene Chloride <2.0 <2.0 48.9 J <39.0 <2.0 <2.0 <2.0 5 760 4,000
Naphthalene <0.64 <0.64 500 288 <0.64 <0.64 <0.64 6 4.6 20
Styrene <0.29 <0.29 69.3 8.2J <0.29 <0.29 <0.29 70 1,900 7,800
Tetrachloroethene <0.29 <0.29 6.7 J <5.8 <0.29 <0.29 <0.29 0.7 12 48
Toluene <0.48 <0.48 576 152 0.85J 1.6 1.9 600 3,800 16,000
Trichloroethene <0.38 <0.38 4.7 J <7.7 <0.38 <0.38 <0.38 3 1 4.4
Xylene (Total)<0.34 <0.34 4,020 1,610 <0.34 <0.34 <0.34 500 77 320
m&p-Xylene <0.71 <0.71 2,260 646 <0.71 <0.71 <0.71 500 71 300
o-Xylene <0.34 <0.34 1,770 961 <0.34 <0.34 <0.34 500 98 410
2-Methylnaphthalene NA NA NA 44.3 <1.6 <1.7 <1.9 30 NE NE
Naphthalene NA NA NA 85.7 <1.8 <1.9 <2.1 6 4.6 20
Arsenic NA NA NA 4.0J 7.2 0.50J 6.9 NE NV NV
Barium NA NA NA 12,600 2,510 474 6,420 700 NV NV
Cadmium NA NA NA 1.9 0.53 0.074J 0.84 2 NV NV
Chromium NA NA NA 88.0 23.4 8.6 77.3 10 NV NV
Lead NA NA NA 193 12.6 1.3 5.4 15 NV NV
Selenium NA NA NA 4.2 8.8 0.55J 9.7 20 NV NV
------
Calculated Carcinogenic Risk (4)NC NC 4.90E-04 9.00E-03 1.40E-04 9.70E-06 1.30E-04 ------
Calculated Non-Carcinogenic Hazard Index (5)NC NC 1.60E+01 1.60E+02 2.20E+00 2.60E-01 3.40E+00 ------
Exceeds Risk?NC NC Yes Yes Yes No Yes ------
------
Calculated Carcinogenic Risk NC NC 1.10E-04 2.20E-03 2.80E-05 1.90E-06 2.70E-05 ------
Calculated Non-Carcinogenic Hazard Index NC NC 3.90E+00 3.50E+01 3.50E-01 4.10E-02 5.40E-01 ------
Exceeds Risk?NC NC Yes Yes No No No ------
Notes:
1) North Carolina Department of Environmental Quality (NCDEQ) 15A NCAC 02L .0202 Groundwater Standards (2L Standards) dated April 2022
2) NCDEQ Division of Waste Management (DWM) Residential Vapor Intrusion Groundwater Screening Levels (GWSLs) dated January 2023
3) NCDEQ DWM Non-Residential Vapor Intrusion GWSLs dated January 2023
4) Risk Calculations generated using the NCDEQ Risk Calculator (2022).
5) Cancer risk values for all contaminants for all exposure pathways may not exceed 1.0E-4
6) Hazard Index for all contaminants for all complete pathways may not exceed 1.0
Concentrations are presented in microgram/liter (µg/L)
Only concentrations detected in at least one sample are presented in the table, refer to the laboratory report.
<3.1 = concentrations detected less than the laboratory method detection limit
Concentrations in bold exceed 2L Standards
Concentrations underlined exceed Residential GWSLs
Concentrations in italics exceed Non-Residential GWSLs
Highlighted values exceed risks
NE= Not Established
-- = not applicable
NV= Not Volatile
NA= Not Analyzed
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
NC = Not Calculated
Cumulative Residential Risks
Cumulative Non-Residential Risks
Semi-Volatile Organic Compounds by EPA Method 8270
RCRA Metals by EPA Method 6020
Residential
GWSLs (2)2L Standards (1)
Occupied Spaces Non-
Residential
GWSLs (3)
Volatile Organic Compounds by EPA Method 8260
Page 1 of 1
Table 2
Summary of Soil Vapor Analytical Results and Risk Calculations
Wilkinson Boulevard
2198 and 2130 Wilkinson Boulevard
Charlotte, North Carolina
Brownfields Project Number: 26070-22-060
Terracon Project Number: 71227190
Location/Area:
Sample ID:SG-1R SG-2 SG-3 SG-5 SSV-1 SSV-2 SSV-3 SSV-4 SSV-DUP-01
Sample Date:02/14/2023 02/13/2023 02/20/2023 02/20/2023 6/9/2022 6/9/2022 02/15/2023 02/14/2023 02/15/2023
Acetone 35.6 75.6 316 60.4 147 247 68.9 173 31.6 NE NE
Benzene ND 12.5 ND ND 2.62 2.53 0.418 J 0.645 0.767 12 160
2-Butanone (MEK)ND 7.49 ND ND 10.2 8.19 7.22 5.93 4.81 35,000 440,000
Carbon disulfide ND 9.49 ND 169 3.02 J 0.903 J 0.526 J 1.6 ND 4,900 61,000
Chloroform ND ND ND ND ND ND ND 0.545 J ND 4.1 53
Chloromethane 3.39 2.91 ND ND ND ND 0.333 J ND 0.599 630 7,900
Cyclohexane 339 11.4 ND 77.1 9.41 17.2 ND 0.271 J ND 42,000 530,000
1,3-Dichlorobenzene ND ND ND ND NA NA 19.7 1.66 14 NE NE
Dichlorodifluoromethane 1.6 ND ND ND 4.28 ND 1.94 2.7 1.99 700 8,800
cis-1,2-Dichloroethene ND ND ND 3.08 ND ND ND ND ND 280 3,500
1,4-Dioxane (p-Dioxane)ND ND ND ND ND ND 1.19 ND 1.03 19 250
Ethanol 75.4 16.1 ND 19.2 NA NA 131 260 122 NE NE
Ethyl acetate ND 4.1 ND ND ND ND ND ND 2.53 490 6,100
Ethylbenzene 7.07 15.8 481 15.8 14.8 32.4 1.09 0.772 J 0.876 37 490
4-Ethyltoluene 4.2 0.849 J ND ND 5.43 3.83 0.457 J ND 0.423 J NE NE
n-Heptane ND 10.1 ND ND 5.8 5.52 0.806 J 0.798 J 0.720 J 2,800 35,000
n-Hexane 343 24.7 546 59.9 6.84 8.26 ND 1.17 J ND 4,900 61,000
2-Hexanone ND ND ND ND 1.94 J ND 0.646 J ND 0.675 J 210 2,600
Isopropyl Alcohol 10.1 ND ND ND 18.1 B1 24 169 46.9 109 NE NE
Methylene Chloride ND 1.94 ND ND 5.1 33.3 4.51 7.43 3.68 3,400 53,000
4-Methyl-2-pentanone (MIBK)ND ND ND ND 2.45 2.65 1.17 J ND ND 21,000 260,000
Naphthalene ND ND ND ND 3.95 3.6 ND ND ND 2.8 36
Propylene 104 100 ND 341 1.77 ND 2.36 ND ND 21,000 260,000
Styrene ND 1.96 ND ND 2.6 12 0.578 J 8.04 0.442 J 7,000 88,000
Tetrachloroethene 19.1 1.55 ND ND 2.95 J 3.2 J 1.05 J 0.661 J 1.17 J 280 3,500
Tetrahydrofuran ND ND ND ND 4.51 3.67 ND 4.92 1.31 14,000 180,000
Toluene 186 546 5,420 228 38 34.7 3.31 3.31 2.46 35,000 440,000
Trichloroethene 75.5 5.95 ND ND ND ND 0.488 J ND ND 14 180
Trichlorofluoromethane ND ND ND ND 3.78 5.24 0.938 J 1.51 0.938 J NE NE
1,2,4-Trimethylbenzene 3.91 0.599 J 101 14.7 19.4 12.9 2.17 0.697 J 1.86 420 5,300
1,3,5-Trimethylbenzene 1.45 ND ND ND 4.86 3.39 0.560 J ND 0.525 J 420 5,300
2,2,4-Trimethylpentane ND 34.8 5,750 1,560 NA NA ND ND ND NE NE
Vinyl acetate ND ND ND ND ND ND 4.89 ND ND 1,400 18,000
Vinyl chloride 0.736 0.798 ND ND ND ND ND ND ND 5.6 280
m&p-Xylene 22.5 43.1 1,510 48.6 63.3 121 3.91 2.51 3.41 700 8,800
o-Xylene 8.41 10.2 411 16.8 25.4 52.7 2.11 0.915 2.04 700 8,800
Xylene (Total)30.91 53.3 1,921 65.4 88.7 174 6.02 3.43 5.45 700 8,800
----
Calculated Carcinogenic Risk (4)5.10E-06 2.00E-06 1.30E-05 NC 2.10E-06 2.40E-06 NC NC NC ----
Calculated Non-Carcinogenic Hazard Index(5)1.10E+00 1.20E-01 6.70E-01 NC 8.50E-02 1.00E-01 NC NC NC ----
Exceeds Risk?Yes No No NC No No NC NC NC ----
----
Calculated Carcinogenic Risk 2.70E-07 1.30E-07 1.E-06 NC 1.60E-07 1.80E-07 NC NC NC ----
Calculated Non-Carcinogenic Hazard Index 9.00E-02 9.90E-03 5.30E-02 NC 6.70E-03 8.00E-03 NC NC NC ----
Exceeds Risk?No No No NC No No NC NC NC ----
Notes:
1) North Carolina Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Residential Sub-slab and Exterior Soil Gas Screening Levels (SGSLs) dated January 2023
2) DEQ DWM Non-Residential Sub-slab and Exterior SGSLs dated January 2023
3) Risk Calculations generated using the NCDEQ Risk Calculator (2022).
4) Cancer risk values for all contaminants for all exposure pathways may not exceed 1.0E-4
5) Hazard Index for all contaminants for all complete pathways may not exceed 1.0
Concentrations are reported in micrograms per cubic meter (µg/m3).
Bold indicates concentration exceeds Residential Sub-slab and Exterior SGSL.
Highlighted value exceeds risk
ND = Non-Detect; NA = Not Analyzed; NE = Not established; -- = Not Applicable; NC = Not Calculated
J = Compound detected above laboratory method detection limit, but below laboratory reporting limit; and therefore reported value is an estimated value.
B1 = Analyte detected in blank
EPA Method TO-15
Cumulative Residential Risk (3)
Cumulative Non-Residential Risk
Residential VISLs (1)Non-Residential VISLs (2)
Occupied Spaces
Page 1 of 1

Facilities | Environmental | Geotechnical | Materials A-2

Figures
TOPOGRAPHIC MAP
WILKINSON BOULEVARD
2198 & 2300 Wilkinson Blvd
Charlotte, NC
TOPOGRAPHIC MAP IMAGE COURTESY OF THE U.S. GEOLOGICAL SURVEYQUADRANGLES INCLUDE: CHARLOTTE WEST, NC (1/1/1993) and CHARLOTTE EAST, NC (1/1/1988).
2701 Westport Rd
Charlotte, NC 28208-3608
71227190Project Manager:
Drawn by:
Checked by:
Approved by:
AGH
SAC
SAC
1”=2,000’
Figure 1
May 2022
Project No.
Scale:
File Name:
Date:
1
AGH Figure
APPROXIMATE
SITE BOUNDARY

Facilities | Environmental | Geotechnical | Materials A-3

Appendix A
NCDEQ Risk Calculator Summary
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
Prepared By:Terracon Consultants, Inc.
Site Wide
North Carolina Department of Environmental Quality
Risk Calculator
Wilkinson Boulevard
2198 and 2130 Wilkinson Boulevard, Charlotte, North Carolina
Brownfields Redevelopment Section
26070-22-060
July 2023
May 2023 EPA RSL Table
North Carolina DEQ Risk Calculator
Complete Exposure Pathways
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: 26070-22-060
Exposure Unit ID: Site Wide
Note: Risk output will only be calculated for complete exposure pathways.
Receptor Pathway
Check box if
pathway
complete
Soil
Groundwater Use
Soil
Groundwater Use
Construction Worker Soil
Soil
Surface Water
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Source Soil
Source Groundwater
Source Soil
Source Groundwater
Input Form 1A
VAPOR INTRUSION PATHWAYS
DIRECT CONTACT SOIL AND WATER PATHWAYS
Resident
Non-Residential Worker
Recreator/Trespasser
Resident
Non-Residential Worker
CONTAMINANT MIGRATION PATHWAYS
Groundwater
Surface Water
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: 26070-22-060
Exposure Unit ID: Site Wide
Description of Exposure Point Concentration Selection:
NOTE: If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
Exposure Point
Concentration
(ug/L)
Notes:CAS Number Chemical
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection
Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity Value
(Screening
Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC
Flag
(Y/N)
Rationale for
Selection or
Deletion
2460 71-43-2 Benzene ug/L
84.2 95-50-1 Dichlorobenzene, 1,2-ug/L
136 107-06-2 Dichloroethane, 1,2-ug/L
10 156-59-2 Dichloroethylene, cis-1,2-ug/L
968 108-20-3 Diisopropyl Ether ug/L
762 100-41-4 Ethylbenzene ug/L
0.86 591-78-6 Hexanone, 2-ug/L
84.2 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/L
236 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)ug/L
48.9 75-09-2 Methylene Chloride ug/L
44.3 91-57-6 ~Methylnaphthalene, 2-ug/L
500 91-20-3 ~Naphthalene ug/L
69.3 100-42-5 Styrene ug/L
6.7 127-18-4 Tetrachloroethylene ug/L
576 108-88-3 Toluene ug/L
4.7 79-01-6 Trichloroethylene ug/L
4020 1330-20-7 Xylenes ug/L
Input Form 2B
Groundwater Exposure Point Concentration Table
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: 26070-22-060
Exposure Unit ID: Site Wide
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(ug/m3)
Notes:CAS Number Chemical
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
247 67-64-1 Acetone ug/m3
12.5 71-43-2 Benzene ug/m3
169 463-58-1 Carbonyl Sulfide ug/m3
0.545 67-66-3 Chloroform ug/m3
3.39 74-87-3 Chloromethane ug/m3
339 110-82-7 Cyclohexane ug/m3
4.28 75-71-8 Dichlorodifluoromethane ug/m3
3.08 156-59-2 Dichloroethylene, cis-1,2-ug/m3
1.19 123-91-1 Dioxane, 1,4-ug/m3
4.1 141-78-6 Ethyl Acetate ug/m3
481 100-41-4 Ethylbenzene ug/m3
4.92 109-99-9 ~Tetrahydrofuran ug/m3
10.1 142-82-5 Heptane, N-ug/m3
546 110-54-3 Hexane, N-ug/m3
1.94 591-78-6 Hexanone, 2-ug/m3
169 67-63-0 Isopropanol ug/m3
10.2 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3
2.65 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)ug/m3
33.3 75-09-2 Methylene Chloride ug/m3
3.95 91-20-3 ~Naphthalene ug/m3
341 115-07-1 Propylene ug/m3
12 100-42-5 Styrene ug/m3
19.1 127-18-4 Tetrachloroethylene ug/m3
5420 108-88-3 Toluene ug/m3
75.5 79-01-6 Trichloroethylene ug/m3
5.24 75-69-4 Trichlorofluoromethane ug/m3
19.4 95-63-6 Trimethylbenzene, 1,2,4-ug/m3
4.86 108-67-8 Trimethylbenzene, 1,3,5-ug/m3
4.89 108-05-4 Vinyl Acetate ug/m3
0.798 75-01-4 Vinyl Chloride ug/m3
1921 1330-20-7 Xylenes ug/m3
Soil Gas Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: 26070-22-060
Exposure Unit ID: Site Wide
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use*NC NC NC
Soil NC NC NC
Groundwater Use*NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water*NC NC NC
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air 1.9E-03 3.4E+01 YES
Soil Gas to Indoor Air 2.0E-05 1.9E+00 YES
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air NC NC NC
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
3. NM = Not modeled, user did not check this pathway as complete.
4. NC = Pathway not calculated, required contaminant migration parameters were not entered.
DIRECT CONTACT SOIL AND WATER CALCULATORS
Resident
Non-Residential Worker
Recreator/Trespasser
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based
closure.
Surface Water Exceedence of 2B at Receptor?
Exceedence of 2B at Receptor?
VAPOR INTRUSION CALCULATORS
Resident
Non-Residential Worker
CONTAMINANT MIGRATION CALCULATORS
Target Receptor Concentrations Exceeded?
Groundwater Exceedence of 2L at Receptor?
Exceedence of 2L at Receptor?
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
Notes:
North Carolina DEQ Risk Calculator

Facilities | Environmental | Geotechnical | Materials B-4

Appendix B
VIMS Design

© 2020 CLINE DESIGN ASSOCIATES, PA EXPRESSLY RESERVES ITS COMMON LAW COPYRIGHT AND OTHER PROPERTY RIGHTS IN THESE PLANS. THESE PLANS ARE NOT TO BE REPRODUCED, CHANGED OR COPIED IN ANY FORM OR MANNER WHATSOEVER, NOR ARE THEY TO BE ASSIGNED TO ANY THIRD PARTY WITHOUT FIRST OBTAINING THE EXPRESSED WRITTEN PERMISSION AND CONSENT OF CLINE DESIGN ASSOCIATES, PA.DRAWN BY:CHECKED BY:REVISIONS:DATE:PROJECT:2923 S. Tryon St.Charlotte, NC 28203704/333-7272ClineDesignAssoc.comNOT FORCO
N
S
T
R
U
C
T
IO
NAC, WOF71227190PTK09.07.2023ConsXOting Engineers and Scientists2701 LONG MEADOW ROADCHARLOTTE, NC 28208FAX. [phone]PH. [phone]ALLIANCE REALITY PARTNERS, LLC
BROADSTONE WEST END
2198 WILKINSONE BLVD., CHARLOTTE, NCDESIGNDEVELOPMENT
DATEPRELIMINARY DRAFT04.13.23NCDEQ COMMENTS09.07.23TITLE SHEET ANDGENERAL NOTESVI0.01GRAVELSievePercent Passing3/4" GRAVEL3/8" GRAVEL1-1/2"100-1"95-100-3/4"90-1001003/8"20-5570-95No. 40-100-25No. 80-50-10TASKS TO BE COMPLETEDRECOMMENDED CONTRACTOR / TRADERESPONSIBLE FOR TASKGCVIMS SUBCONTRACTORSUBGRADE PREPARATIONPLACEMENT OF 4-INCH MIN. COMPACTED AGGREGATE LAYERABOVE SUBGRADE.XPREPARATION OF AGGREGATE TO ALLOW FOR MEMBRANEATTACHMENT TO VERTICAL AND HORIZONTAL SURFACESXCONSTRUCTION OF 12-INCH THICK CONCRETE PENETRATIONBANKS WHERE UTILITY CONDUITS ARE CONCENTRATED.XINSTALLATION OF VAPOR COLLECTION SYSTEMEXCAVATION OF TRENCHES FOR CONVEYANCE PIPING,TRANSITION PIPING, AND LOW PROFILE VAPOR COLLECTIONPIPING.XXINSTALLATION OF PIPE TRANSITIONS THROUGH GRADE BEAMS ORTHICKENED SLABS.XINSTALLATION OF VAPOR COLLECTION PIPING AND TRANSITIONPIPINGXXCONNECTION OF THE VAPOR COLLECTION TO PIPE COUPLINGS.XBACKFILL OF AGGREGATE OVER THE HEADER PIPE AND VAPORCOLLECTION AFTER INSTALLATION IS COMPLETED.XXCONNECTION OF THE EXHAUST PIPE TO A ROOF MOUNTEDVENTILATOR.XINSTALLATION OF VENT PIPE RISER SAMPLE PORTS AND ACCESSPANEL ON INTERIOR WALL.XINSTALLATION OF 3-INCH VERTICAL VENT RISERS, ENDING AMINIMUM OF 24" ABOVE FINISHED ROOF.XINSTALLATION OF GAS VAPOR MEMBRANEREMOVAL OF EXCESS SOILS FROM BUILDING PAD AND SITE, IFNECESSARY.XPLACEMENT OF BASE LAYER AND SPRAY-APPLIED CORE LAYER.XSEALING OF ALL FLOOR SLAB PENETRATIONSXPLACEMENT OF PROTECTIVE LAYER OVER SPRAY-APPLIED CORELAYER.XPERFORMANCE OF SMOKE TEST AND FINAL QC OF VIMSMEMBRANE.XINSPECTION OF SYSTEM BY CERTIFIED VIMS MEMBRANETECHNICIAN DURING INSTALLATION.XINSTALLATION OF SUB-SLAB MONITORING POINTSXNOTESI. APPLICABILITYA.GENERAL1.A PASSIVE VAPOR INTRUSION MITIGATION SYSTEM (VIMS) SHALL BE INSTALLED AND WILL INCLUDE A 40-MILMINIMUM DRY THICKNESS APPLICATION OF SPRAY-APPLIED VOLATILE ORGANIC COMPOUND (VOC) RESISTANTCORE LAYER UNDERLAIN BY A LOW-PROFILE GAS VENT SYSTEM VENTED AT THE ROOF. THE VIMS ISDESIGNED TO BE CONVERTED TO AN ACTIVE SYSTEM, IF NEEDED.2.VIMS DETAILS PRESENTED IN THESE PLANS AND SPECIFICATIONS SHALL BE UTILIZED IN THE CONSTRUCTIONOF THE BUILDING DESIGNATED ON SHEETS VI0.01 THROUGH VI3.11. THE BASIS OF DESIGN IS ASPRAY-APPLIED VOC-RESISTANT CORE LAYER AND ANY ASSOCIATED VENTING MATERIALS AS DESCRIBED INTHESE PLANS. MANUFACTURER REFERENCE TO THESE PRODUCTS ARE PROVIDED BELOW AS APPROVEDPROVIDERS OF THE MEMBRANE AND MATERIALS ONLY AND MAY BE SUBSTITUTED FOR EQUIVALENTPRODUCTS IF APPROVED BY THE VIMS DESIGNER. NOTE: LIQUID BOOT 500 IS NOT AN APPROVED EQUIVALENT.¹ GEOSEAL; EPRO SERVICES, INC. (EPRO); TEL: [phone]; WWW.EPROINC.COM² LIQUID BOOT; CETCO REMEDIATION TECHNOLOGIES, HOFFMAN ESTATES, IL [phone]³ NITRA-SEAL; LAND SCIENCE TECHNOLOGIES, SAN CLEMENTE, CA (949) 366-80003.THE VIMS MEMBRANE WILL ALSO SERVE AS A MOISTURE MEMBRANE AND WILL REPLACE ANY VAPOR ORMOISTURE BARRIER SPECIFIED IN THE STRUCTURAL DETAILS. INSTALLATION OF A MOISTURE OR VAPORBARRIER BETWEEN THE VIMS MEMBRANE AND BUILDING FLOOR SLAB MAY VOID THE WARRANTY PROVIDED BYTHE VIMS MEMBRANE MANUFACTURER.4.WATERPROOFING WILL BE INSTALLED BY THE GENERAL CONTRACTOR AS SPECIFIED IN THE ARCHITECTURALDRAWINGS AND SHALL BE INSTALLED TO MITIGATE AGAINST VAPOR INTRUSION INTO INDOOR AIR.WATERPROOFING MATERIALS FOR VAPOR INTRUSION MITIGATION SHALL BE COMPATIBLE WITH THE VIMSMEMBRANE TO FORM A GAS-TIGHT SEAL. ALL WATERPROOFING MATERIALS SHALL BE REVIEWED BY THE VIMSDESIGNER AND VIMS MEMBRANE MANUFACTURER FOR COMPATIBILITY WITH THE VIMS MEMBRANE AND THEVAPOR CONTAMINANTS PRESENT IN THE SUBSURFACE. MANUFACTURER'S PRODUCT INFORMATION ANDINSTALLATION PROCEDURES SHALL BE SUBMITTED TO AND APPROVED A MINIMUM OF FOUR WEEKS PRIOR TOINSTALLATION.B.SYSTEM COMPONENTS1.THE VIMS CONSTRUCTION SHALL CONSIST OF, BUT NOT BE LIMITED TO, THE FOLLOWING:a.SUPPLY AND INSTALL 4-INCH AGGREGATE LAYER BENEATH FOUNDATION SLAB.b.SUPPLY AND INSTALL LOW PROFILE VAPOR COLLECTION PIPING AND ASSOCIATED FITTINGSc.SUPPLY AND INSTALL 3-INCH PVC CONVEYANCE PIPINGd.SUPPLY AND INSTALL 2-INCH PVC TRANSITION PIPINGe.SUPPLY AND INSTALL 40-MIL VOC-RESISTANT CORE LAYERf.SUPPLY AND INSTALL PROTECTIVE AND BASE LAYERS ABOVE AND BELOW THE CORE LAYER,RESPECTIVELYg.PERFORM SMOKE AND COUPON TESTING OF THE VIMS MEMBRANEh.SUPPLY AND INSTALL SCH. 40 PVC VERTICAL VENT RISER PIPING, SAMPLE PORTS, AND GAS FITTINGSi.COMPLETE CONNECTION OF VERTICAL VENT RISER PIPING TO ROOF AS APPROPRIATEj.INSTALL ROOF-MOUNTED VENTILATORS2.ALL MATERIALS ARE TO BE DELIVERED TO THE PROJECT SITE IN THEIR ORIGINAL UNBROKEN PACKAGESBEARING THE MANUFACTURER'S LABEL SHOWING BRAND, WEIGHT, VOLUME, BATCH NUMBER AND DATE.MATERIALS ARE TO BE STORED AT THE PROJECT SITE IN STRICT COMPLIANCE WITH THE MANUFACTURER'SINSTRUCTIONS.II.VAPOR INTRUSION MITIGATION SYSTEMA.VAPOR COLLECTION AND VENT SYSTEMA.1AGGREGATE LAYER1.A MINIMUM 4-INCH LAYER OF GRAVEL AGGREGATE SHALL BE PROVIDED BENEATH THE FOUNDATION SLAB.THE AGGREGATE LAYER SHALL BE A FINE TO MEDIUM AGGREGATE AND CONTAIN NO MORE THAN 5% FINES(I.E. ≤5% PASSING #200 SIEVE). THE GRADATION OF THE AGGREGATE PLACED BELOW THE MEMBRANE SHALLMEET THE FOLLOWING SPECIFICATIONS OR AS SPECIFIED IN THE GEOTECHNICAL REPORT IF APPROVED BYTHE VIMS DESIGNER:2.THE AGGREGATE WILL BE PLACED 2-INCHES ABOVE AND 1-INCH BELOW THE VAPOR COLLECTION PIPING ASSHOWN IN DETAIL 01, SHEET VI3.01.3.ANY AGGREGATE REMOVED DURING PLACEMENT OF UTILITIES MUST BE PLACED BACK TO LEVEL GRADE ANDCOMPACTED AS SPECIFIED IN THE PROJECT PLANS AND SPECIFICATIONS. UTILITIES PLACED IN THEAGGREGATE LAYER MAY NOT BE LARGER THAN 1-INCH IN DIAMETER. UTILITIES LARGER THAN 1-INCH INDIAMETER MUST BE BURIED INTO THE SUBGRADE SUCH THAT NO MORE THAN 1 INCH OF THE AGGREGATELAYER IS AFFECTED.4.THE SUBGRADE UNDER THE AGGREGATE SHALL BE ROLLED SMOOTH AND MOISTURE CONDITIONED ASNECESSARY TO ACHIEVE THE COMPACTION SPECIFIED IN THE GEOTECHNICAL ENGINEER'S SPECIFICATION.A.2 SUB-SLAB VAPOR COLLECTION PIPING1.SUB-SLAB LOW PROFILE VAPOR COLLECTION PIPING SHALL BE COMPRISED OF ONE-FOOT WIDE BY ONE-INCHTHICK CORRUGATED PIPING WRAPPED IN GEOTEXTILE OR EQUIVALENT AS APPROVED BY THE VIMSDESIGNER.2.VAPOR COLLECTION PIPING SHALL BE INSTALLED AT LOCATIONS SHOWN ON VI1.00 AND VI1.01 AND PLACEDWITHIN THE 4-INCH AGGREGATE LAYER. LOW PROFILE VAPOR COLLECTION PIPING SHALL BE PLACED SUCHTHAT NO AREA BENEATH THE SLAB/ FOUNDATION IS MORE THAN 25 FEET FROM THE VAPOR COLLECTIONPIPING.3.VAPOR COLLECTION PIPING SHALL BE CONNECTED TO 3-INCH SOLID SCHEDULE 40 PVC CONVEYANCE PIPINGTO THE VENT RISERS, USING MANUFACTURER-APPROVED END OUTLETS, CONNECTING TO SCH. 40 PVCELBOWS TURNING UP THROUGH THE FLOOR SLAB WITHIN FOUNDATION FOOTINGS AND/OR ADJACENT TOSTRUCTURAL COLUMNS.4.THE TRANSITIONS PIPING SHALL BE 2-INCH SCHEDULE 40 PVC TO VENT AREAS ISOLATED FROM VENTEDAREAS BY THE FOUNDATION.5.ALL CONVEYANCE AND TRANSITION PIPING SHALL BE IN PLACE PRIOR TO POURING THE FOUNDATION GRADEBEAMS OR FOOTINGS WHEN POURED SEPARATELY FROM THE FLOOR SLAB. THE PIPING TRANSITIONS SHALLBE ACCOMPLISHED IN COMPLIANCE WITH THE ALL APPLICABLE BUILDING CODES AND WITH THE APPROVAL OFTHE PROJECT STRUCTURAL ENGINEER AND/OR BUILDING OFFICAL.A.3ABOVE SLAB VAPOR COLLECTION RISER1.VENT RISER TO THE ROOF SHALL BE COMPRISED OF 3-INCH DIAMETER SCH. 40 PVC. RISER PIPING SHALL BELOCATED WITHIN THE WALLS/CHASES OR INSTALLED ADJACENT TO INTERIOR SUPPORT COLUMNS.2.THE RISER PIPE TO THE ROOF SHALL BE FULLY SUPPORTED THROUGH THE ENTIRE HEIGHT OF THE BUILDINGWITH PIPE CLAMPS OR SIMILAR, SUCH THAT NO DOWNWARD FORCE (DUE TO THE WEIGHT OF THE RISER PIPE)IS EXERTED ON THE SUBSLAB VENTING SYSTEM.3.IF INSTALLED IN AN WALL, A 16x16-INCH MEDIUM SECURITY ACCESS PANEL SHALL BE INSTALLED BETWEEN 2AND 5 FEET ABOVE THE FLOOR SLAB IN ORDER TO ACCESS THE VENT SYSTEM FOR SYSTEM PERFORMANCEMONITORING (SEE DETAILS 01, 02, 03, AND 08, SHEET VI3.11).4.A 304 STAINLESS STEEL HEX REDUCING BUSHING (MNPT X FNPT, 1/2" X 1/4") SHALL BE TAPPED INTO THEPIPING AND SEALED PERMANENTLY FOR GAS-TIGHT APPLICATIONS. A QUICK-CONNECT COUPLER SHALL BEINSTALLED IN THE BUSHING AND SEALED WITH GAS-RATED TEFLON TAPE TO ALLOW FOR REMOVAL DURINGMONITORING (SEE DETAIL 12, SHEET VI3.11).5.THE RISER PIPE SHALL BE EQUIPPED WITH A 3-INCH SHUTOFF VALVE TO ALLOW FOR SHUTOFF OF AIR FLOWABOVE THE VALVE DURING SAMPLING OR OPERATION OF AN ACTIVE SYSTEM. THIS VALVE SHALL BEINSTALLED INLINE ABOVE THE ROOF LINE (SEE DETAIL 12, SHEET VI3.11).6.PLACARDS SHALL BE INSTALLED ON EACH VENT RISER APPROXIMATELY EVERY 5 FEET AND AT ANY EXPOSEDRISER PIPING (SEE DETAIL 16, SHEET VI3.11).7.A VIMS MEMBRANE IDENTIFICATION SIGN SHALL BE INSTALLED IN UTILITY AND MECHANICAL ROOMS (SEEDETAIL 14, SHEET VI3.11). THIS SIGN IS TO BE PLACED ON THE WALLS AT EYE LEVEL AND SHALL NOT BECOVERED OVER. THE LOCATION OF THIS NOTIFICATION WILL BE DETERMINED BY THE CONTRACTOR, OWNER,OR BUILDING OFFICIAL.A.PASSIVE VENTILATOR1.A PASSIVE VENTILATOR CAPABLE OF 26 CFM WITH A 4 MPH WIND SHALL BE INSTALLED ON AT THE TOP OFEACH VENT RISER PIPE ABOVE THE ROOF LINE. THE VENTILATORS SHALL INCLUDE BASES, REDUCINGCOUPLINGS, AND ALL OTHER REQUIRED ACCESSORIES FOR A SECURE CONNECTION TO THE VENT RISERPIPING.2.THE AURA AV-3 ROOF VENT IS AN ACCEPTABLE PASSIVE VENTILATOR (SEE DETAIL 14, SHEET VI3.11). THESEPRODUCTS ARE MANUFACTURED BY ACTIVE VENTILATION PRODUCTS, INC.; 1-800-247-3463;WWW.ROOFVENTS.COM.3.THE PASSIVE VENTILATORS SHALL BE INSTALLED IN ACCORDANCE WITH INDUSTRY STANDARDS ASRECOMMENDED BY THE MANUFACTURER.4.RISER PIPES SHALL TERMINATE A MINIMUM OF 24 INCHES ABOVE THE ROOF-LINE, EQUIPPED AND BRACEDAPPROPRIATELY IN ACCORDANCE WITH APPLICABLE BUILDING CODES (SEE DETAIL 13, SHEET VI3.11).5.ROOF-MOUNTED VENTILATORS SHALL BE LOCATED AT A DISTANCE OF NOT LESS THAN 15 FEET FROM ANYBUILDING AIR INTAKE AND AT A DISTANCE OF AT LEAST 4 FEET FROM ANY PROPERTY LINE.A.SUB-SLAB VACUUM MONITORING POINT1.PRIOR TO AND DURING THE INSTALLATION OF THE PIPING, SUB-SLAB VACUUM MONITORING/VAPOR SAMPLINGPOINTS WILL BE INSTALLED AT LOCATIONS SHOWN ON VI1.00 AND VI1.01, VAPOR PIN INSERTS WILL BE USEDTO FACILITATE THE INSTALLATION OF A VAPOR PIN WITHIN THE BUILDING FOOTPRINT. THE VAPOR PIN INSERTIS SHOWN ON DETAIL 17, SHEET VI3.11.2.PRIOR TO INSTALLATION OF THE MEMBRANE, CONFIRM THE FINAL SLAB HEIGHT AND LOCATION OF THEVAPOR PIN WITH THE GENERAL CONTRACTOR. INSTALL A THREADED ROD THAT EXTENDS FROM THEAGGREGATE BASE TO ABOVE THE PROPOSED SLAB SURFACE. PERFORATE THE BOTTOM PORTION OF THEINSERT THAT WILL BE BELOW THE MEMBRANE. PLACE THE VAPOR PIN INSERT ON THE THREADED ROD SOTHAT THE CAP OF THE VAPOR PIN INSERT IS SET EQUAL TO THE LEVEL OF THE FINAL FLOOR AND/OR SLABELEVATION.3.SEAL THE VAPOR PIN INSERT AS A MEMBRANE PENETRATION (DETAIL 03, SHEET VI3.01) AND SMOKE TEST THEVAPOR PIN INSERT. FOLLOWING THE SLAB POUR, REMOVE THE THREADED ROD AND INSTALL THE VAPOR PIN.APPLY THE CAP WHEN POINT IS NOT IN USE. APPLY A STAINLESS-STEEL SECURE COVER TO THE FINAL FLOORSURFACE FOR ACCESS DURING PRESSURE MONITORING EVENTS.B.VIMS MEMBRANEB.1MATERIALS1.THE VIMS MEMBRANE SHALL CONSIST OF A SPRAYED-ON OR LOCALLY TROWEL APPLIED VOC-RESISTANTCORE LAYER BETWEEN MANUFACTURER APPROVED BASE AND PROTECTIVE LAYERS.2.INSTALLATION OF THE BASE LAYER AND PROTECTIVE FABRIC SHALL BE INSTALLED IN ACCORDANCE WITH THEMANUFACTURER'S SPECIFICATIONS UNLESS OTHERWISE SPECIFIED AND APPROVED BY THE VIMS DESIGNER.B.2BASE AND PROTECTIVE LAYERS1.THE BASE LAYER SHALL CONSIST OF A CHEMICALLY RESISTANT LAYER SUPPLIED BY THE MANUFACTURERAND APPROVED BY THE VIMS DESIGNER. THE BOTTOM BASE LAYER IS INSTALLED AS A CARRIER FABRIC FORTHE VIMS MEMBRANE.2.THE UPPER SURFACE OF THE VIMS MEMBRANE SHALL BE PROTECTED BY A MANUFACTURER APPROVEDPROTECTIVE LAYER, PLACED BETWEEN THE FLOOR SLAB AND THE MEMBRANE AS SPECIFIED ON THESEPLANS. THE PROTECTIVE LAYER IS INSTALLED AFTER THE APPLICATION, CURING, AND TESTING OF THEVOC-RESISTANT CORE LAYER.B.3SPRAY-APPLIED CORE LAYER1.THE VIMS MEMBRANE SHALL CONSIST OF A SPRAY-APPLIED VOC-RESISTANT CORE LAYER WITH A MINIMUMCURED (DRY) THICKNESS OF 40-MILS AND SHALL BE INSTALLED IN ACCORDANCE WITH THE MANUFACTURER'SSPECIFICATIONS UNLESS OTHERWISE SPECIFIED AND APPROVED BY THE VIMS DESIGNER.2.THE VIMS MEMBRANE SHALL BE PLACED BENEATH THE FLOOR SLAB, FOOTINGS, AND TRENCHES INACCORDANCE WITH THESE PLANS AND DETAILS. THE VIMS MEMBRANE SHALL NOT BE PLACED ON TOP OFANY CONCRETE PIERS OR EXTENDED REBAR.3.SEAMS SHALL BE OVERLAPPED A MINIMUM OF 6 INCHES AND SEALED IN ACCORDANCE WITH THESPECIFICATIONS SET FORTH IN THESE PLANS (SEE DETAIL 05, SHEET VI3.01).B.PENETRATION SEALS1.WHERE UTILITIES, VENT LINES, PIPING, ELECTRICAL CONDUITS, ETC. PENETRATE THE VIMS MEMBRANE, A3-INCH COLLAR OF REINFORCEMENT FABRIC AND VOC-RESISTANT CORE LAYER SHALL BE PROVIDED TOCREATE A GAS-TIGHT SEAL AROUND THE PENETRATION IN ACCORDANCE WITH THE MANUFACTURERSSPECIFICATIONS AS SHOWN ON DETAIL 03, SHEET VI3.01.2.WHERE PENETRATIONS SUCH AS ELECTRICAL UTILITY CONDUITS, PLUMBING PIPING, ETC. ARECONCENTRATED, A CONCRETE PENETRATION BANK WILL BE CONSTRUCTED TO SECURE THE PENETRATIONSIN-PLACE (SEE DETAIL 04, SHEET VI3.01). THE PENETRATION BANK SHALL BE CONSTRUCTED USING A MINIMUMTHICKNESS OF 12 INCHES THE TOP OF EXTENDING A MINIMUM OF 8 INCHES FROM ANY PENETRATION,ALLOWING FOR A MINIMUM 6-INCH ATTACHMENT OF THE VIMS MEMBRANE, SIMILAR TO AN ATTACHMENT TO ANINTERIOR FOOTING. THE TOP OF THE PENETRATION BANK SHALL BE BELOW THE BOTTOM OF THE SLAB.PENETRATIONS SHALL NOT BE IN CONTACT WITH ADJACENT PENETRATIONS OR OTHER OBJECTS TO ALLOWPROPER SEALING AROUND THE ENTIRE PENETRATION CIRCUMFERENCE.C.4UALITY ASSURANCE1.THE VIMS SUBCONTRACTOR SHALL BE TRAINED AND APPROVED BY THE VIMS MATERIAL MANUFACTURER.THE VIMS SUBCONTRACTOR SHALL PROVIDE THE VIMS DESIGNER WITH A LETTER FROM THE MANUFACTURER(A) CONFIRMING THAT THE VIMS SUBCONTRACTOR RETAINED BY THE OWNER FOR THE PERFORMANCE OFTHIS SCOPE OF WORK IS CERTIFIED BY THE MANUFACTURER FOR INSTALLATION OF THE MATERIAL; AND (B)WARRANTING ITS MATERIAL TO BE FREE OF DEFECTS WHEN THAT MATERIAL IS INSTALLED BY THE VIMSSUBCONTRACTOR.2.A PRE-INSTALLATION CONFERENCE SHALL BE HELD PRIOR TO THE APPLICATION OF THE VIMS MEMBRANE TOCOORDINATE PROPER SUBSTRATE AND INSTALLATION CONDITIONS AND PROCEDURES. THE VIMSSUBCONTRACTOR, SITE SUPERINTENDENT, THE FOUNDATION SUBCONTRACTOR, SUBSLAB UTILITYCONTRACTORS, AND THE VIMS DESIGNER SHALL BE PRESENT AT THIS MEETING.3.THE INSTALLATION OF THE VIMS MEMBRANE SHALL BE CLOSELY MONITORED BY THE VIMS DESIGNER OR HISDESIGNATED REPRESENTATIVE. INSPECTIONS SHALL TYPICALLY BE PERFORMED PRIOR TO, DURING, ANDSUBSEQUENT TO THE INSTALLATION OF THE VAPOR COLLECTION PIPING AND APPLICATION OF THE VIMSMEMBRANE. IT IS THE RESPONSIBILITY OF THE VIMS SUBCONTRACTOR TO NOTIFY THE OWNER AND VIMSDESIGNER WITHIN 72 HOURS OF BEGINNING ANY PORTION OF THIS WORK.4.ALL SURFACES TO RECEIVE THE VIMS MEMBRANE TERMINATIONS SHALL BE INSPECTED AND APPROVED BYTHE VIMS SUBCONTRACTOR FOR THE PERFORMANCE OF THIS SCOPE OF WORK AND BY THE VIMS DESIGNERPRIOR TO COMMENCING WORK.5.PRIOR TO PLACING THE FLOOR SLAB OVER THE MEMBRANE, THE VIMS DESIGNER SHALL INSPECT ANDAPPROVE THE MEMBRANE IN ACCORDANCE WITH THESE PLANS AND SPECIFICATIONS.D.SUBMITTALS1.THE VIMS SUBCONTRACTOR SHALL SUBMIT ANY UPDATES OR REVISIONS TO THE MANUFACTURER'S MATERIALDATA AND RECOMMENDED INSTALLATION PROCEDURES TO THE VIMS DESIGNER FOR REVIEW AND APPROVALAT LEAST ONE WEEK PRIOR TO THE CONSTRUCTION OF THE VIMS MEMBRANE.2.THE VIMS SUBCONTRACTOR SHALL SUBMIT REPRESENTATIVE SAMPLES OR MANUFACTURER'S PRODUCTSPECIFICATIONS OF THE FOLLOWING TO THE VIMS DESIGNER FOR APPROVAL:nBASE AND PROTECTIVE LAYERSnSPRAY-APPLIED VOC-RESISTANT CORE LAYERnREINFORCEMENT FABRICnAGGREGATE MATERIALnLOW PROFILE VAPOR COLLECTION PIPING AND END OUTLETSnSAFETY DATA SHEET FOR LOW-VOC GLUE USED FOR CONSTRUCTION3.AT THE COMPLETION OF INSTALLATION, THE VIMS SUBCONTRACTOR SHALL SUBMIT A LETTER TO THE VIMSDESIGNER AND TO THE OWNER CERTIFYING THAT VIMS INSTALLATION WAS COMPLETED IN ACCORDANCEWITH THE PROJECT PLANS AND SPECIFICATIONS AS WELL AS MANUFACTURER SPECIFICATIONS.E.WARRANTY1.TERRACON RECOMMENDS THE OWNER OBTAIN A WARRANTY FOR THE VIMS MEMBRANE. THEMANUFACTURER PROVIDES PRODUCT AND/OR SYSTEM WARRANTIES FOR THE VIMS MEMBRANE RANGINGFROM ONE YEAR T0 20 YEARS IN DURATION.2.THE VIMS MANUFACTURER MAY REQUIRE SUBMITTAL OF DESIGN DOCUMENTS, ENVIRONMENTAL REPORTS,GEOTECHNICAL REPORTS, OR OTHER DOCUMENTATION FOR REVIEW PRIOR TO ISSUING A WARRANTY, ANDADDITIONAL COSTS MAY APPLY. PLEASE CONTACT THE SELECTED MANUFACTURER FOR WARRANTY TERMSAND CONDITIONS AND ADDITIONAL INFORMATION.3.MANUFACTURERS EXTENDED WARRANTIES MUST BE REQUESTED BY THE OWNER PRIOR TO VIMSINSTALLATION BID REQUESTS.F.JOB CONDITIONS1.THE AREAS ADJACENT TO THE VIMS MEMBRANE ARE TO BE PROTECTED BY THE VIMS SUBCONTRACTOR FORTHE PERFORMANCE OF THIS SCOPE OF WORK DURING THE INSTALLATION PROCESS. WHERE NECESSARY,MASKING OR OTHER PROTECTIVE MEASURES SHALL BE UTILIZED TO PREVENT STAINING OF SURFACESBEYOND THE LIMITS OF THE APPLICATION.2.WORK IS TO BE PERFORMED ONLY WHEN EXISTING AND FORECASTED WEATHER CONDITIONS ARE WITHINTHE MANUFACTURER RECOMMENDATIONS FOR THE MATERIAL AND PRODUCT USED. THE APPLICATION OFTHE VIMS MEMBRANE COMPOUNDS SHALL BE SUSPENDED IF THE AMBIENT TEMPERATURE FALLS BELOW 45°F, OR DURING PERIODS OF PRECIPITATION. APPLICATION OF THE VIMS MEMBRANE MAY BE PERFORMEDBELOW 45° F, BUT ONLY WITH WRITTEN PERMISSION FROM THE VIMS DESIGNER AND MATERIALMANUFACTURER.3.A MINIMUM CLEARANCE OF 24 INCHES IS REQUIRED FOR A TYPICAL SPRAY APPLICATION OF THEVOC-RESISTANT CORE LAYER. FOR AREAS WITH LESS THAN 24-INCH CLEARANCE, THE VOC-RESISTANT CORELAYER MAY BE APPLIED BY HAND.4.ALL PLUMBING, ELECTRICAL, MECHANICAL AND STRUCTURAL ITEMS THAT ARE LOCATED BENEATH OR THATPASS THROUGH THE VIMS MEMBRANE SHALL BE POSITIVELY SECURED IN THEIR PROPER POSITIONS ANDAPPROPRIATELY PROTECTED PRIOR TO APPLICATION OF THE VOC-RESISTANT CORE LAYER.5.THE VIMS MEMBRANE SHALL BE INSTALLED BEFORE PLACEMENT OF REINFORCING STEEL. IF REINFORCINGSTEEL IS PRESENT AT THE TIME OF APPLICATION, ALL EXPOSED REINFORCEMENT SHALL BE MASKED BY THEFOUNDATION SUBCONTRACTOR PRIOR TO APPLICATION OF THE VOC-RESISTANT CORE LAYER.6.REINFORCING STEEL, PIPING, FORMS, ETC. SHALL NOT BEAR DIRECTLY ON THE MEMBRANE OR PROTECTIVELAYER AND EQUIPMENT SHALL NOT BE DRIVEN OVER THE MEMBRANE OR ITS PROTECTIVE LAYER WITHOUTPRIOR APPROVAL FROM THE VIMS DESIGNER AND MANUFACTURER.7.STAKES USED TO SECURE THE CONCRETE FORMS SHALL NOT PENETRATE THE VIMS MEMBRANE AFTER ITHAS BEEN INSTALLED. IF STAKES NEED TO PUNCTURE THE MEMBRANE AFTER IT HAS BEEN INSTALLED, THEVIMS DESIGNER AND INSTALLER SHOULD BE NOTIFIED, AND NECESSARY REPAIRS NEED TO BE MADE BY THEVIMS SUBCONTRACTOR. HOLLOW STAKES WILL NOT BE USED.8.FIELD SITUATIONS NOT SPECIALLY DETAILED SHALL BE HANDLED PER THE INTENT OF THESE PLANS ANDSPECIFICATIONS WITH THE APPROVAL OF THE VIMS DESIGNER. THE APPLICATOR / CONTRACTOR MAY SUBMITSHOP DRAWINGS FOR ALTERNATIVE METHODS. SEE STRUCTURAL FOUNDATION PLANS FOR COMPLETEDEPTHS AND DETAILS OF FOOTING. DEPTHS OF FOOTINGS SHOWN IN THESE PLANS ARE GENERALIZED,ACTUAL FOOTING DEPTHS MAY VARY.9.APPROPRIATE CARE SHALL BE EXERCISED TO PROTECT THE VIMS MEMBRANE AND PREVENT PENETRATIONSSUBSEQUENT TO ITS APPLICATION. THE VIMS MEMBRANE SHALL BE PROTECTED FROM PEDESTRIAN TRAFFICWITH THE PROTECTIVE LAYER. THE PROTECTIVE LAYER SHALL BE KEPT FREE OF DIRT AND DEBRIS, TO THEEXTENT POSSIBLE, UNTIL THE FLOOR SLAB IS POURED. IT SHALL BE THE RESPONSIBILITY OF THE GENERALCONTRACTOR TO ENSURE THAT THE VIMS MEMBRANE AND THE PROTECTION SYSTEM ARE NOT PENETRATEDAFTER THE COMPLETION OF THE INSTALLATION.G.INSTALLATIONG.1VAPOR COLLECTION PIPING INSTALLATION1.VAPOR COLLECTION PIPING SHALL BE CONNECTED TO PROVIDE A GAS-TIGHT SEAL AT ALL CONNECTIONS ANDFITTINGS AND SHALL BE CONSTRUCTED OF MATERIALS THAT COMPLY WITH THE UNIFORM PLUMBING ANDMECHANICAL CODES. ALL JOINTS SHALL BE TIGHTLY SEALED WITH APPROVED MATERIALS. ANY GLUE ORSOLVENT USED TO SEAL THE PIPING MUST BE LOW-FREE.2.PLACEMENT OF AGGREGATE ABOVE THE PIPING SHALL NOT BEGIN BEFORE THE VIMS DESIGNER HASINSPECTED THE GRADE AND ALIGNMENT OF THE PIPING, THE BEDDING OF THE PIPING AND THE JOINTSBETWEEN THE PIPING. ALL PIPING LOCATED WITHIN THE AGGREGATE LAYER SHALL BE PROTECTED FROMPHYSICAL DAMAGE.3.CONVEYANCE PIPING GREATER THAN 10 FEET IN LENGTH SHALL HAVE 1/4-INCH DIAMETER WEEP HOLESDRILLED ON THE BOTTOM OF THE PIPE APPROXIMATELY EVERY 5 FEET.4.DRILL A 1/4-INCH DIAMETER WEEP HOLE ON THE BOTTOM OF PIPE FOR EVERY FOOT OF PIPING BENEATHGRADE BEAMS AND THICKENED SLABS.5.SOLID RISER PIPE SHALL BE LOCATED WITHIN THE WALLS/CHASES OR SHALL BE SIMILARLY PROTECTED FROMPHYSICAL DAMAGE. DAMAGE INCURRED DURING CONSTRUCTION OR OCCUPANCY COULD AFFECT SYSTEMPERFORMANCE.G.2VIMS MEMBRANE AND PROTECTIVE LAYER INSTALLATIONS1.THE SUBGRADE SHALL BE MOISTURE CONDITIONED AND COMPACTED BY THE GRADING CONTRACTOR ASSPECIFIED IN THE PROJECT PLANS AND SPECIFICATIONS. THE FINISHED SURFACE SHALL BE SMOOTH,UNIFORM, AND FREE OF DEBRIS AND STANDING WATER. FINAL SUBGRADE INSPECTION/PREPARATION SHALLNOT PRECEDE THE VIMS INSTALLATION BY MORE THAN 72 HOURS.2.THE AGGREGATE LAYER SHALL BE MOISTURE CONDITIONED AND COMPACTED AS SPECIFIED IN THE PROJECTPLANS AND SPECIFICATIONS.3.IF THE VIMS MEMBRANE IS TO BE PLACED ON A CONCRETE SURFACE, CONCRETE SURFACES SHALL BE LIGHTBROOM FINISHED OR SMOOTHED, FREE OF ANY DIRT, DEBRIS, LOOSE MATERIAL, RELEASE AGENTS ORCURING COMPOUNDS. ALL VOIDS MORE THAN 1/4-INCH IN WIDTH SHALL BE PROPERLY FILLED WITHNON-SHRINK GROUT OR AS SPECIFIED IN THE PROJECT PLANS AND SPECIFICATIONS. MASONRY JOINTSSHALL BE STRUCK SMOOTH WITH A METAL TROWEL. ALL PENETRATIONS SHALL BE PREPARED INACCORDANCE WITH THE MANUFACTURERS SPECIFICATIONS.4.ALL VIMS MEMBRANE PENETRATIONS SHALL BE PREPARED IN ACCORDANCE WITH MANUFACTURER'SSPECIFICATIONS. ANY FORM STAKES THAT PENETRATE THE VIMS MEMBRANE SHALL BE RE-BAR WHICH SHALLBE BENT OVER AND LEFT IN THE SLAB, OR CUT OFF BELOW THE TOP OF THE SLAB. HOLLOW CONDUIT STAKESNOT BE USED.5.TRENCHES SHALL BE CUT OVERSIZE AS NECESSARY TO ACCOMMODATE INSTALLATION OF THE VIMSMEMBRANE.6.THE WALLS OF FOOTING OR UTILITY TRENCHES SHALL BE SMOOTH AND FREE OF ROOTS OR PROTRUDINGROCKS.7.IF ORGANIC MATERIALS WITH POTENTIAL FOR GROWTH (E.G. SEEDS OR GRASSES) ARE PRESENT WITHIN THESUBGRADE, THE GENERAL CONTRACTOR SHALL APPLY A SOIL STERILANT AT THE MANUFACTURER'SRECOMMENDED RATE PRIOR TO THE INSTALLATION OF THE VIMS MEMBRANE.8.THE BASE LAYER SHALL FIRST BE LAID ON THE AGGREGATE LAYER IN ACCORDANCE WITH THE MATERIALMANUFACTURER'S SPECIFICATIONS. ALL SEAMS SHALL BE OVERLAPPED A MINIMUM OF 6 INCHES. ANY OPENUTILITY OR OTHER TRENCH PRESENT AT THE TIME OF APPLICATION SHALL BE LINED WITH PROTECTIVE BASELAYER EXTENDING AT LEAST 6 INCHES ONTO THE ADJOINING SUBGRADE. THE BASE LAYER SHALL BE ININTEGRAL CONTACT WITH ALL INTERIOR FOUNDATION CORNERS. VOC-RESISTANT CORE LAYER SHALL BESPRAY APPLIED AT ALL OVERLAPPED SEAMS TO A THICKNESS OF 30-MILS MINIMUM.9.INSTALL THE PROTECTIVE BOND LAYER OVER THE NOMINALLY CURED VOC-RESISTANT CORE LAYER NOLATER THAN RECOMMENDED BY MANUFACTURER AND BEFORE STARTING SUBSEQUENT CONSTRUCTIONOPERATIONS. VISUAL INSPECTION AND SMOKE TESTING MUST BE PERFORMED PRIOR TO PLACING THEPROTECTIVE LAYER OVER THE VOC-RESISTANT CORE LAYER.G.3 SEALING PENETRATIONS1.ALL PENETRATIONS SHALL BE CLEANED AND PREPARED TO PROVIDE PROPER ADHESION OF THEVOC-RESISTANT CORE LAYER FOR A VAPOR TIGHT SEAL. METAL PENETRATIONS SHALL BE SANDED CLEANAND PREPARED USING EMERY CLOTH FOR PROPER ADHESION OF THE VOC-RESISTANT CORE LAYER.2.ALL PENETRATIONS SHOULD BE SECURED PRIOR TO INSTALLATION OF THE VIMS MEMBRANE SYSTEM.PENETRATIONS SHALL NOT BE IN CONTACT WITH ADJACENT PENETRATIONS OR OTHER OBJECTS TO ALLOWPROPER SEALING AROUND THE ENTIRE PENETRATION CIRCUMFERENCE. WHERE PENETRATIONS SUCH ASELECTRICAL CONDUITS, PLUMBING PIPING, ETC ARE CONCENTRATED, A CONCRETE PENETRATION BANK WILLBE CONSTRUCTED PRIOR TO VIMS MEMBRANE PLACEMENT. THE CONCRETE PENETRATION BANK WILLCONSIST OF A MINIMUM THICKNESS OF 12 INCHES OF CONCRETE, EXTENDING A MINIMUM OF 8 INCHESBEYOND THE EDGE OF EACH PENETRATION TO ALLOW FOR ATTACHMENT OF THE VIMS MEMBRANE (SEEDETAIL 04, SHEET VI3.01).3.THE BASE LAYER SHALL BE CUT AROUND PENETRATIONS SO THAT IT LAYS FLAT ON THE SUBGRADE. THERESHOULD NOT BE A GAP LARGER THAN 1/8-INCH BETWEEN THE BASE LAYER AND THE PENETRATION (SEEDETAIL 03, SHEET VI3.01).4.APPLY ONE COAT OF VOC-RESISTANT CORE LAYER TROWEL GRADE OR VOC-RESISTANT CORE LAYER SPRAYTO THE BASE LAYER AND AROUND THE PENETRATIONS AT A THICKNESS OF 40-MILS. PENETRATIONS SHOULDBE TREATED IN A 6-INCH RADIUS AROUND THE PENETRATION AND 3 INCHES ONTO THE PENETRATION OBJECT.5.BASE LAYER BOND MATERIAL OR REINFORCEMENT FABRIC SHALL BE USED AS AN EMBEDDED BASE LAYERCOLLAR PLACED AFTER THE FIRST APPLICATION OF THE VOC-RESISTANT CORE LAYER SPRAY ORVOC-RESISTANT CORE LAYER TROWEL GRADE. THEN SPRAY A SECOND 40-MIL COAT OVER THE EMBEDDEDREINFORCING LAYER ENSURING THE COMPLETE SATURATION OF THE EMBEDDED LAYER AND TIGHT SEALAROUND THE PENETRATION.6.THE PENETRATION SHALL BE WRAPPED WITH A POLYPROPYLENE CABLE TIE AT A POINT 2 INCHES ABOVE THEBASE OF THE PENETRATION. THE CABLE TIE SHALL BE TIGHTENED FIRMLY SO AS TO SQUEEZE THE CUREDMEMBRANE COLLAR, BUT NOT TOO TIGHT TO SLICE INTO THE FINISHED SEAL. (SEE DETAIL 03, SHEET VI3.01).THE CABLE TIE MAY BE INSTALLED IMMEDIATELY AFTER THE PROTECTIVE LAYER COLLAR HAS BEENINSTALLED.H.INSPECTIONS1.THE INSPECTION OF ALL VAPOR CONTROL MEASURES SHALL BE PERFORMED BY THE VIMS DESIGNER. AT AMINIMUM, INSPECTION SHALL TAKE PLACE AT THE FOLLOWING STAGES OF THE INSTALLATION, AS DEEMEDNECESSARY BY THE VIMS DESIGNER:nAFTER THE INSTALLATION OF THE LOW PROFILE VAPOR COLLECTION PIPING AND PRIOR TOINSTALLATION OF THE AGGREGATE LAYER ABOVE THE VAPOR COLLECTION PIPING;nPERIODICALLY DURING THE INSTALLATION OF THE BASE LAYER;nDURING THE SPRAY APPLICATION OF THE VOC-RESISTANT CORE LAYER;nDURING SMOKE TESTING;nAFTER THE INSTALLATION OF THE PROTECTIVE LAYER, REINFORCING STEEL, AND ALL FOUNDATIONFORM WORK, BUT PRIOR TO AND THROUGHOUT THE PLACEMENT OF CONCRETE FOR THE FLOOR SLAB;nDURING AND AT THE COMPLETION OF THE VERTICAL VENT RISER PIPING AND ROOF VENTINSTALLATION.2.FINAL SUBGRADE INSPECTION / PREPARATION SHALL NOT PRECEDE THE VIMS INSTALLATION BY MORE THAN72 HOURS.3.FIELD QUALITY CONTROL IS A VERY IMPORTANT PART OF ALL APPLICATIONS. THE VIMS SUBCONTRACTORSHALL CHECK HIS OWN WORK FOR COVERAGE, THICKNESS, AND ALL-AROUND GOOD WORKMANSHIP.4.COUPON SAMPLES SHALL BE CUT FROM THE VIMS MEMBRANE IN 2 SQUARE INCHES TO REPRESENT AMAXIMUM AREA OF PER 500 SQUARE FEET OF APPLICATION AND PROVIDED TO THE VIMS INSPECTOR. THETHICKNESS OF THE COMPOSITE LAYER SHALL BE MEASURED WITH A DIGITAL CALIPER HAVING A RESOLUTIONOF 1-MIL OR BETTER. THE THICKNESS OF THE BASE LAYER SHALL BE DEDUCTED FROM THE COMPOSITETHICKNESS IN ORDER TO DETERMINE THE THICKNESS OF THE VOC-RESISTANT CORE LAYER. WHENWARRANTED, THE TEST AREA SHALL BE MARKED BY THE VIMS DESIGNER FOR REPAIR.5.VOIDS LEFT BY SAMPLING SHALL BE PATCHED BY THE VIMS SUBCONTRACTOR BY OVERLAPPING THE VOID BYA MINIMUM OF 6 INCHES. A THIN TACK COAT OF VOC-RESISTANT CORE LAYER SHALL BE APPLIED TO ADHERETO THE BASE LAYER. SPRAY OR TROWEL APPLIED VOC-RESISTANT CORE LAYER SHALL THEN BE APPLIED TOA 40-MIL MINIMUM DRY THICKNESS, EXTENDING AT LEAST 3 INCHES BEYOND THE BASE PATCH.6.ON CONCRETE SURFACES, THE VIMS MEMBRANE SHALL BE CHECKED FOR COVERAGE WITH A LIGHTLY OILED,NEEDLE NOSE DEPTH GAUGE. THE MINIMUM READING SHALL BE RECORDED AND THE TEST AREA SHALL BEMARKED FOR REPAIR BY THE VIMS DESIGNER.7.CONCRETE TEST AREAS SHALL BE PATCHED WITH VOC-RESISTANT CORE LAYER TO A 40-MIL MINIMUM DRYTHICKNESS, EXTENDING A MINIMUM OF 1 INCH BEYOND THE TEST PERIMETER.8.EACH COMPLETED AREA OF VIMS MEMBRANE SHALL BE SMOKE TESTED AT THE COMPLETION OF THEINSTALLATION IN ACCORDANCE WITH MANUFACTURER'S PROTOCOL TO CONFIRM THE INTEGRITY OF THE VIMSMEMBRANE. ONE SMOKE TEST SHALL BE CONDUCTED FOR A MAXIMUM OF EVERY 2,500 SQUARE FOOT AREA.ANY LEAKS WHICH ARE IDENTIFIED SHALL BE REPAIRED AND RE-TESTED UNTIL ALL LEAKS/PERFORATIONSARE ELIMINATED.9.PRIOR TO PLACING THE CONCRETE SLAB OVER THE VIMS MEMBRANE, THE VIMS SUBCONTRACTOR SHALLCERTIFY IN WRITING THAT THE VIMS MEMBRANE HAS BEEN INSTALLED AND TESTED IN ACCORDANCE WITHTHE MANUFACTURER'S SPECIFICATIONS AND IS FREE OF LEAKS, AND HAS A MINIMUM THICKNESS OF 30-MILS.10.SERVICE LISTED IN THIS SPECIFICATION AS BEING REQUIRED BY THE VIMS DESIGNER ARE DEPENDENT UPONOWNER AUTHORIZATION OF SAID SERVICES TO VIMS DESIGNER, AND NOTIFICATIONS TO THE VIMS DESIGNEROF THE PROJECT STATUS BY THE VIMS SUBCONTRACTOR. IF THESE SERVICES ARE NOT PERFORMED BY THEVIMS DESIGNER, THE MANUFACTURER'S WARRANTY MAY BE VOIDED.RECOMMENDED VAPOR INTRUSION MITIGATION SYSTEM TASKS SUMMARYI.REPAIRS1.TERRACON UNDERSTAND THAT TENANT IMPROVEMENTS MAY BE REQUIRED IN THE COMMERCIAL SPACESDURING TENANT BUILD OUT.2.IF TENANT IMPROVEMENTS REQUIRE CUTTING THROUGH SLAB AND MEMBRANE, THE VIMS DESIGNER SHALLBE NOTIFIED.3.REPAIRS OF THE VIMS BARRIER SHALL BE CONDUCTED BY A MANUFACTURER CERTIFIED INSTALLER. AGENERAL REPAIR DETAIL IS SHOWN IN DETAIL 09, SHEET VI3.01.4.TERRACON SHALL BE NOTIFIED TO PROVIDE CONSTRUCTION OBSERVATION SERVICES TO DOCUMENT THEREPAIR OF THE VIMS MEMBRANE.STANDARD OF CARE AND LIMITATIONSTERRACON'S SERVICES WILL BE PERFORMED IN A MANNER CONSISTENT WITH GENERALLY ACCEPTED PRACTICESOF THE PROFESSION UNDERTAKEN IN SIMILAR DESIGNS IN THE SAME GEOGRAPHICAL AREA DURING THE SAMETIME PERIOD. PLEASE NOTE THAT TERRACON DOES NOT WARRANT THE WORK OF THIRD PARTIES SUPPLYINGINFORMATION USED IN THE PREPARATION OF THE VAPOR INTRUSION MITIGATION SYSTEM. THESE SERVICES WEREPERFORMED IN ACCORDANCE WITH THE SCOPE OF WORK AGREED WITH YOU, OUR CLIENT, AS REFLECTED IN OURPROPOSAL.NOTICE FOR CONTRACTORALL CONTRACTORS AND SUBCONTRACTORS PERFORMING WORK SHOWN ON OR RELATED TO THESE PLANS SHALLCONDUCT THEIR OPERATIONS SO THAT ALL EMPLOYEES ARE PROVIDED A SAFE PLACE TO WORK AND THE PUBLICIS PROTECTED. ALL CONTRACTORS AND SUBCONTRACTORS SHALL COMPLY WITH THE "OCCUPATIONAL SAFETYAND HEALTH REGULATIONS" OF THE U.S. DEPARTMENT OF LABOR AND ALL LOCAL AND STATE REGULATIONS.THE OWNER AND THE VIMS DESIGNER SHALL NOT BE RESPONSIBLE IN ANY WAY FOR CONTRACTORS ANDSUBCONTRACTORS COMPLIANCE WITH THE "OCCUPATIONAL SAFETY AND HEALTH REGULATIONS" OF THE U.S.DEPARTMENT OF LABOR AND ALL LOCAL AND STATE REGULATIONS.CONTRACTOR SHALL ASSUME SOLE AND COMPLETE RESPONSIBILITY FOR JOB SITE CONDITIONS DURING THECOURSE OF CONSTRUCTION OF THIS PROJECT, INCLUDING SAFETY OF ALL PERSONS AND PROPERTY, THAT THISREQUIREMENT SHALL APPLY CONTINUOUSLY AND NOT BE LIMITED TO NORMAL WORKING HOURS, AND THAT THECONTRACTOR SHALL DEFEND, INDEMNIFY, AND HOLD THE OWNER AND THE VIMS DESIGNER HARMLESS FROM ANYAND ALL LIABILITY REAL OR ALLEGED, IN CONNECTION WITH THE PERFORMANCE OF WORK ON THIS PROJECT,EXCEPT FOR LIABILITY ARISING FROM THE SOLE NEGLIGENCE OF THE OWNER OR THE VIMS DESIGNER.IN CASE OF CONFLICT BETWEEN THESE PLANS AND OTHER SITE DESIGN DOCUMENTS AND/OR MANUFACTURERSPECIFICATIONS / REQUIREMENTS THE APPROPRIATE PARTIES / COMPANIES WITH CONFLICTING DOCUMENTATIONSHALL CONFER TO DETERMINE A MUTUALLY AGREED UPON SOLUTION.PLANS & SPECIFICATIONS FORVAPOR INTRUSION MITIGATION SYSTEMBROADSTONE WEST END2198 WILKSON BLVDCHARLOTTE, NORTH CAROLINASITEPROJECT SITE LOCATION_________________________________________________________________________________________________________________INDEX OF SHEETS_________________________________________________________________________________________________________________VI0.01TITLE SHEET AND GENERAL NOTESVI1.00 VAPOR INTRUSION MITIGATION SYSTEM PLAN - BASEMENTVI1.01VAPOR INTRUSION MITIGATION SYSTEM PLAN - FIRST FLOORVI1.02VAPOR INTRUSION MITIGATION SYSTEM PLAN - SECOND FLOORVI1.06VAPOR INTRUSION MITIGATION SYSTEM PLAN - ROOFVI3.01VAPOR INTRUSION MITIGATION SYSTEM DETAILS - MEMBRANEVI3.02VAPOR INTRUSION MITIGATION SYSTEM DETAILS - MEMBRANEVI3.11VAPOR INTRUSION MITIGATION SYSTEM DETAILS - PIPING
ENTRY / EXITARTY AVEUPUPUPUNIT A2UNIT A2UNIT B1-M1UNIT A1-M1UNIT B1-M3UNIT A1 TYPE ASTAIR 300TRASHLOADINGBK STOR.STOR.STAIR 400STAIR 200ELEV. 200
LOBBY
UNIT A0-M1UNIT A3UNIT A3UNIT A3UNIT A1-M1UNIT A3UNIT A1-M1UNIT A1-M1UNIT A0-M1UNIT A0-M1TRASH ROOMUNIT A1UNIT A1STORAGESTOR.STOR.MECHSTOR.T/SOG= 703'-4"T/SOG= 703'-4"T/SOG= 703'-4"T/SOG= 703'-4"T/SOG= 703'-4"T/SOG= 703'-4"T/SOG= 703'-4"T/SOG= 703'-4"T/SOG= 703'-4"MP4MP8VR1VR2VR3VR4VR5VR6VR7VR8VR9VR1001VI3.1101VI3.1101VI3.1101VI3.1101VI3.1101VI3.1101VI3.1101VI3.1101VI3.1101VI3.11T
Y
P
.04VI3.11TYP.05VI3.11TYP.05VI3.1114VI3.01T
Y
P
.14VI3.01TYP.14VI3.01TYP.14VI3.01TYP.14VI3.01TYP.14VI3.01T
Y
P
.01VI3.0215VI3.01TYP.15VI3.01TYP.15VI3.01TYP.17VI3.01TYP.14VI3.01T
Y
P
.14VI3.01TYP.15VI3.01TYP.11VI3.01T
Y
P
.11VI3.01TYP.11VI3.01TYP.11VI3.01TYP.12VI3.01TYP.12VI3.01TYP.11VI3.01TYP.11VI3.01TYP.12VI3.01TYP.12VI3.01TYP.TYP.04VI3.11TYP.05VI3.11RISER TO CONNECT TO CONVEYANCE PIPINGON FIRST FLOOR (SEE DETAIL 09, SHEET VI3.11)06VI3.11CONVEYANCE PIPE GREATER THAN 10 FEET IN LENGTH SHALLHAVE 1/4-INCH DIAMETER WEEP HOLES DRILLED ON THEBOTTOM OF THE PIPE APPROXIMATELY EVERY 5 FEET (TYP.)TYP.04VI3.11TYP.04VI3.1107VI3.1107VI3.11T
Y
P
.10VI3.11T
Y
P
.10VI3.1114VI3.01TYP.18VI3.01TYP.14VI3.01TYP.1' MIN.1' MIN.20VI3.01TYP.20VI3.01TYP.~18,600 SQ. FT.TMP1MP3TMP2TMP4MP9MP7MP5THERE ARE NOT ELEVATORS OR ISOLATED AREAS IN THE PARKINGGARAGE THAT NEED VAPOR INTRUSION MITIGATION SYSTEM OTHERTHAN THOSE INDICATED (SEE ARCHITECTURAL PLANS)MP1MP2MP6TMP33-INCH SOLID SCH 40 PVC CONVEYANCE PIPELEGEND2-INCH SOLID SCH 40 PVC TRANSITION PIPEEXTENT OF VAPOR INTRUSION MITIGATION SYSTEM MEMBRANEPERMANENT SUB-SLAB MONITORING POINT (SEE DETAIL 18, SHEET VI3.11)MP112" LOW PROFILE VAPOR COLLECTION PIPE VENT RISER TO ROOF LOCATIONVR1TYPICAL THICKENED SLAB (SEE DETAIL 14, SHEET VI3.01)TMP1TEMPORARY SUB-SLAB MONITORING POINT (SEE DETAIL 18, SHEET VI3.11)PERMANENT SUB-SLAB MONITORING POINT WITH EXTERIOR FLUSH MOUNTHAND HOLE (SEE DETAIL 19, SHEET VI3.11)MP4SCALE: 1/16" = 1'-0"; APPROXIMATE MEMBRANE SQUARE FOOTAGE: 18,700 SQ. FT.01VIMS MEMBRANE AND VAPOR COLLECTION VENT PIPE LAYOUTSCALE IN FEET0164168© 2020 CLINE DESIGN ASSOCIATES, PA EXPRESSLY RESERVES ITS COMMON LAW COPYRIGHT AND OTHER PROPERTY RIGHTS IN THESE PLANS. THESE PLANS ARE NOT TO BE REPRODUCED, CHANGED OR COPIED IN ANY FORM OR MANNER WHATSOEVER, NOR ARE THEY TO BE ASSIGNED TO ANY THIRD PARTY WITHOUT FIRST OBTAINING THE EXPRESSED WRITTEN PERMISSION AND CONSENT OF CLINE DESIGN ASSOCIATES, PA.DRAWN BY:CHECKED BY:REVISIONS:DATE:PROJECT:2923 S. Tryon St.Charlotte, NC 28203704/333-7272ClineDesignAssoc.comNOT FORCONSTRUCTIONAC, WOF71227190PTK09.07.2023CRQVXOWLQJ EQJLQHHUV DQG SFLHQWLVWV2701 LONG MEADOW ROADCHARLOTTE, NC 28208FAX. [phone]PH. [phone]ALLIANCE REALITY PARTNERS, LLC
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2198 WILKINSONE BLVD., CHARLOTTE, NCDESIGNDEVELOPMENT
DATEPRELIMINARY DRAFT04.13.23NCDEQ COMMENTS09.07.23VAPOR INTRUSIONMITIGATION SYSTEMPLAN - BASEMENTVI1.00
DDENTRY / EXITWILKINSON BLVDARTY AVEPOOL COURTYARDDNUPUPUPUPUPDNDNUPUPBACKFLOWSTAIR 100ELEV. 100POOL RESTROOMSSTAIR 300ELEV. 300ELEV. 200 STAIR 200STAIR 400ELEC/ MECH.ELEC.STOR.LOBBY MECH.ELEC.STOR.ELEC/ MECH.
STOR.
STOR.
LOBBYSTOR.STOR.ELEC.MAINT.ELEC.MECH.POOL STOR.TR. DP.MECH.CHEM.ELEC.
ELEC.STOR.STOR.
STOR.STOR.STOR.ERRCS
ERRCSLEASING/AMENITY715'-0"T/SOG= 716'-0"T/SOG= 714'-0"T/SOG= 714'-0"T/SOG= 714'-0"T/SOG= 714'-0"T/SOG= 714'-0"T/SOG= 714'-0"T/SOG= 714'-0"T/SOG= 714'-0"T/SOG= 714'-0"T/SOG= 714'-0"T/SOG= 716'-0"T/SOG= 716'-0"T/SOG= 716'-0"T/SOG= 716'-0"T/SOG= 716'-0"T/SOG= 716'-0"T/SOG= 716'-0"T/SOG= 715'-0"T/SOG= 715'-0"T/SOG= 715'-0"T/SOG= 715'-0"T/SOG= 715'-0"T/SOG= 715'-0"T/SOG= 715'-0"T/SOG= 715'-0"1' MIN.1' MIN.MP12MP10MP15MP17MP19MP211' MIN.1' MIN.1' MIN.VR16VR17VR24VR23VR22VR21VR15VR14VR13VR12VR11VR25VR18VR19VR20VR1VR2VR3VR4VR5VR6VR9VR10VR7VR801VI3.1101VI3.1102VI3.1102VI3.1101VI3.1101VI3.1101VI3.1101VI3.1101VI3.1101VI3.1101VI3.1101VI3.1103VI3.11TYP.04VI3.11TYP.04VI3.11T
Y
P
.04VI3.11TYP.05VI3.11TYP.04VI3.11TYP.05VI3.11TYP.05VI3.11TYP.05VI3.11TYP.05VI3.11TYP.08VI3.11TYP.06VI3.11TYP.05VI3.1113VI3.01TYP.13VI3.01TYP.11VI3.01TYP.11VI3.01TYP.12VI3.01TYP.14VI3.01TYP.11VI3.01TYP.11VI3.01TYP.16/20VI3.0116/20VI3.0111VI3.01TYP.14VI3.01TYP.14VI3.01TYP.14VI3.01TYP.14VI3.01TYP.14VI3.01TYP.14VI3.01TYP.14VI3.01TYP.14VI3.01T
Y
P
.14VI3.01T
Y
P
.10VI3.11TYP.14VI3.01TYP.14VI3.01TYP.14VI3.01TYP.02VI3.0216VI3.01TYP.16VI3.01TYP.13VI3.01TYP.13VI3.01TYP.13VI3.01TYP.13VI3.01TYP.11VI3.01T
Y
P
.11VI3.01TYP.12VI3.01TYP.12VI3.01TYP.15VI3.01TYP.15VI3.01TYP.15VI3.01T
Y
P
.19VI3.01TYP.19VI3.01TYP.17VI3.01T
Y
P
.TYP.04VI3.11T
Y
P
.04VI3.11TYP.04VI3.11TYP.04VI3.1101VI3.11RISER TO CONNECT TO CONVEYANCE PIPINGON FIRST FLOOR (SEE DETAIL 09, SHEET VI3.11)11VI3.01TYP.11VI3.01TYP.11VI3.01TYP.11VI3.01T
Y
P
.20VI3.01TYP.20VI3.01T
Y
P
.CONVEYANCE PIPE GREATER THAN 10 FEET IN LENGTH SHALLHAVE 1/4-INCH DIAMETER WEEP HOLES DRILLED ON THEBOTTOM OF THE PIPE APPROXIMATELY EVERY 5 FEET (TYP.)CONVEYANCE PIPE GREATER THAN 10 FEET IN LENGTH SHALLHAVE 1/4-INCH DIAMETER WEEP HOLES DRILLED ON THEBOTTOM OF THE PIPE APPROXIMATELY EVERY 5 FEET (TYP.)TYP.04VI3.11TYP.05VI3.11TYP.05VI3.11TYP.04VI3.1112VI3.01TYP.12VI3.01TYP.11VI3.01TYP.12VI3.01TYP.01VI3.0210VI3.11TYP.12VI3.01TYP.12VI3.01T
Y
P
.15VI3.01TYP.14VI3.01TYP.TMP5TMP6TMP7TMP8TMP9MP14MP13MP18MP20MP11~12,000 SQ. FT.~30,600 SQ. FT.MP16TRANSFORMER AREA - NOT ENCLOSED(SEE ARCHITECTURAL PLANS)TRASH CHUTE -(SEE ARCHITECTURAL PLANS)3-INCH SOLID SCH 40 PVC CONVEYANCE PIPELEGEND2-INCH SOLID SCH 40 PVC TRANSITION PIPEEXTENT OF VAPOR INTRUSION MITIGATION SYSTEM MEMBRANEPERMANENT SUB-SLAB MONITORING POINT (SEE DETAIL 18, SHEET VI3.11)MP112" LOW PROFILE VAPOR COLLECTION PIPE VENT RISER TO ROOF LOCATIONVR1TYPICAL THICKENED SLAB (SEE DETAIL 14, SHEET VI3.01)TMP1TEMPORARY SUB-SLAB MONITORING POINT (SEE DETAIL 18, SHEET VI3.11)PERMANENT SUB-SLAB MONITORING POINT WITH EXTERIOR FLUSH MOUNTHAND HOLE (SEE DETAIL 19, SHEET VI3.11)MP4SCALE: 1/16" = 1'-0"; APPROXIMATE MEMBRANE SQUARE FOOTAGE: 43,300 SQ. FT.01VIMS MEMBRANE AND VAPOR COLLECTION VENT PIPE LAYOUTSCALE IN FEET0164168© 2020 CLINE DESIGN ASSOCIATES, PA EXPRESSLY RESERVES ITS COMMON LAW COPYRIGHT AND OTHER PROPERTY RIGHTS IN THESE PLANS. THESE PLANS ARE NOT TO BE REPRODUCED, CHANGED OR COPIED IN ANY FORM OR MANNER WHATSOEVER, NOR ARE THEY TO BE ASSIGNED TO ANY THIRD PARTY WITHOUT FIRST OBTAINING THE EXPRESSED WRITTEN PERMISSION AND CONSENT OF CLINE DESIGN ASSOCIATES, PA.DRAWN BY:CHECKED BY:REVISIONS:DATE:PROJECT:2923 S. Tryon St.Charlotte, NC 28203704/333-7272ClineDesignAssoc.comNOT FORCONSTRUCTIONAC, WOF71227190PTK09.07.2023CRQVXOWLQJ EQJLQHHUV DQG SFLHQWLVWV2701 LONG MEADOW ROADCHARLOTTE, NC 28208FAX. [phone]PH. [phone]ALLIANCE REALITY PARTNERS, LLC
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2198 WILKINSONE BLVD., CHARLOTTE, NCDESIGNDEVELOPMENT
DATEPRELIMINARY DRAFT04.13.23NCDEQ COMMENTS09.07.23VAPOR INTRUSIONMITIGATION SYSTEMPLAN - FIRST FLOORVI1.01
UPUPUPUPUPUNIT A2UNIT A2UNIT B1-M1UNIT A0UNIT A0UNIT A3-M2UNIT A3-M2UNIT A3-M2UNIT A4-M1UNIT A4-M1UNIT A0UNIT A1-M1UNIT A0UNIT A0UNIT B2UNIT A1-M2UNIT B1-M3UNIT B2 TYPE AUNIT A1-M3STAIR 100ELEV. 100STAIR 300ELEV. 300ELEV. 200 STAIR 200STAIR 400UNIT A3-M5TR. DP.MECH.
STOR.
MECH.
ELEC.
STOR.
STOR.
STOR.
STOR.STOR.STOR.MECH.STOR.MECH
STOR.
STOR.STOR.STOR.STOR.LOBBYSTOR.STOR.STOR.LOBBY
STOR.LOBBYUNIT A0-M1UNIT A5UNIT B2UNIT A4UNIT A4UNIT A3UNIT A1UNIT A3_M6UNIT A3_M6UNIT A3UNIT A3UNIT A1 TYPE AUNIT A4UNIT A3UNIT A3UNIT A3UNIT A4UNIT A0UNIT A3-M3UNIT A0-M1UNIT A0-M1UNIT A1-M1UNIT A1-M1MECH.ELEC.UNIT A1UNIT A1UNIT A1UNIT A1UNIT A1UNIT A1UNIT A1UNIT A1UNIT A1UNIT A1UNIT A1UNIT B2-M1UNIT B2-M1STOR.UNIT A0MECH.STOR.STOR.STOR.UNIT B2-M1UNIT B1-M4STOR.ERRCS
ERRCS STOR.VR16VR17VR22VR14VR13VR19VR20VR1VR2VR3VR4VR5VR6VR9VR10VR7VR8VR24VR23VR25VENT RISER FROM SUB-SLABVENT RISER TO EXIT ROOFVR21VR15VR12VR11VR18LEGENDVENT RISER TRANSITION BETWEEN FLOORSVENT RISER FROM SUB-SLAB TO EXIT ROOF LOCATIONVR1SCALE: 1/16" = 1'-0"01VENT RISER TRANSITION BETWEEN FIRST AND SECOND FLOORSSCALE IN FEET0164168© 2020 CLINE DESIGN ASSOCIATES, PA EXPRESSLY RESERVES ITS COMMON LAW COPYRIGHT AND OTHER PROPERTY RIGHTS IN THESE PLANS. THESE PLANS ARE NOT TO BE REPRODUCED, CHANGED OR COPIED IN ANY FORM OR MANNER WHATSOEVER, NOR ARE THEY TO BE ASSIGNED TO ANY THIRD PARTY WITHOUT FIRST OBTAINING THE EXPRESSED WRITTEN PERMISSION AND CONSENT OF CLINE DESIGN ASSOCIATES, PA.DRAWN BY:CHECKED BY:REVISIONS:DATE:PROJECT:2923 S. Tryon St.Charlotte, NC 28203704/333-7272ClineDesignAssoc.comNOT FORCONSTRUCTIONAC, WOF71227190PTK09.07.2023CRQVXOWLQJ EQJLQHHUV DQG SFLHQWLVWV2701 LONG MEADOW ROADCHARLOTTE, NC 28208FAX. [phone]PH. [phone]ALLIANCE REALITY PARTNERS, LLC
BROADSTONE WEST END
2198 WILKINSONE BLVD., CHARLOTTE, NCDESIGNDEVELOPMENT
DATEPRELIMINARY DRAFT04.13.23NCDEQ COMMENTS09.07.23VAPOR INTRUSIONMITIGATION SYSTEMPLAN - SECOND FLOORVI1.02
R.D.R.D.R.D.R.D.R.D.R.D.R.D.R.D.R.D.R.D.R.D.15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONE15 FT. FRESH AREA INTAKEEXCLUSION ZONEVR6VENT RISER FROM SUB-SLAB(SEE DETAIL 13, SHEET VI3.11)VENT RISERFROM SUB-SLABTRANSITION ABOVE CEILING TOEXIT ROOF (2% SLOPE MIN.)(SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)VENT RISERFROM SUB-SLABTRANSITION ABOVE CEILING TO EXIT ROOF(2% SLOPE MIN.) (SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)TRANSITION ABOVE CEILING TOEXIT ROOF (2% SLOPE MIN.)(SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)TRANSITION ABOVE CEILING TO EXIT ROOF(2% SLOPE MIN.) (SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)VENT RISERFROM SUB-SLABTRANSITION ABOVE CEILING TO EXIT ROOF(2% SLOPE MIN.) (SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)TRANSITION ABOVE CEILING TO EXIT ROOF(2% SLOPE MIN.) (SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)TRANSITION ABOVE CEILING TO EXIT ROOF(2% SLOPE MIN.) (SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)TRANSITION ABOVE CEILING TO EXIT ROOF(2% SLOPE MIN.) (SEE DETAIL 17, SHEET VI3.11)TRANSITION ABOVE CEILING TO EXIT ROOF(2% SLOPE MIN.) (SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)VENT RISERFROM SUB-SLABTRANSITION ABOVE CEILING TO EXIT ROOF(2% SLOPE MIN.) (SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)VENT RISER FROM SUB-SLABTRANSITION ABOVE CEILING TO EXIT ROOF(2% SLOPE MIN.) (SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)TRANSITION ABOVE CEILING TOEXIT ROOF (2% SLOPE MIN.)(SEE DETAIL 17, SHEET VI3.11)TRANSITION ABOVE CEILING TOEXIT ROOF (2% SLOPE MIN.)(SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)TRANSITION ABOVE CEILING TOEXIT ROOF (2% SLOPE MIN.)(SEE DETAIL 17, SHEET VI3.11)TRANSITION ABOVE CEILING TOEXIT ROOF (2% SLOPE MIN.)(SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)TRANSITION ABOVE CEILING TO EXIT ROOF(2% SLOPE MIN.) (SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)VENT RISERFROM SUB-SLABTRANSITION ABOVE CEILING TO EXIT ROOF(2% SLOPE MIN.) (SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)VENT RISERFROM SUB-SLABTRANSITION ABOVE CEILING TO EXIT ROOF(2% SLOPE MIN.) (SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)VENT RISERFROM SUB-SLABTRANSITION ABOVE CEILING TOEXIT ROOF (2% SLOPE MIN.)(SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)VENT RISERFROM SUB-SLABTRANSITION ABOVE CEILING TO EXIT ROOF(2% SLOPE MIN.) (SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)VENT RISERFROM SUB-SLABTRANSITION ABOVE CEILING TO EXIT ROOF(2% SLOPE MIN.) (SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)VENT RISERFROM SUB-SLABTRANSITION ABOVE CEILING TO EXIT ROOF(2% SLOPE MIN.) (SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)VENT RISERFROM SUB-SLABTRANSITION ABOVE CEILING TO EXIT ROOF(2% SLOPE MIN.) (SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)TRANSITION ABOVE CEILING TO EXIT ROOF(2% SLOPE MIN.) (SEE DETAIL 17, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)ROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)VENT RISER FROM SUB-SLABVENT RISER FROM SUB-SLABVR13VR19VR20VR1VR2VR3VR4VR5VR9VR10VENT RISERFROM SUB-SLABVENT RISERFROM SUB-SLABVENT RISERFROM SUB-SLABVENT RISERFROM SUB-SLABVR22VENT RISERFROM SUB-SLABVENT RISERFROM SUB-SLABVR14VENT RISERFROM SUB-SLABVR16VR17VENT RISERFROM SUB-SLABVENT RISERFROM SUB-SLABROOF PENETRATION(SEE DETAIL 13, SHEET VI3.11)VR7VR8VR24VR23VR25VR21VR15VR12VR11VR18LEGENDVENT RISER TRANSITION BELOW ROOF DECKVENT RISER FROM SUB-SLAB LOCATIONVR1ROOF VENT LAYOUTSCALE IN FEET016416801© 2020 CLINE DESIGN ASSOCIATES, PA EXPRESSLY RESERVES ITS COMMON LAW COPYRIGHT AND OTHER PROPERTY RIGHTS IN THESE PLANS. THESE PLANS ARE NOT TO BE REPRODUCED, CHANGED OR COPIED IN ANY FORM OR MANNER WHATSOEVER, NOR ARE THEY TO BE ASSIGNED TO ANY THIRD PARTY WITHOUT FIRST OBTAINING THE EXPRESSED WRITTEN PERMISSION AND CONSENT OF CLINE DESIGN ASSOCIATES, PA.DRAWN BY:CHECKED BY:REVISIONS:DATE:PROJECT:2923 S. Tryon St.Charlotte, NC 28203704/333-7272ClineDesignAssoc.comNOT FORCONSTRUCTIONAC, WOF71227190PTK09.07.2023CRQVXOWLQJ EQJLQHHUV DQG SFLHQWLVWV2701 LONG MEADOW ROADCHARLOTTE, NC 28208FAX. [phone]PH. [phone]ALLIANCE REALITY PARTNERS, LLC
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2198 WILKINSONE BLVD., CHARLOTTE, NCDESIGNDEVELOPMENT
DATEPRELIMINARY DRAFT04.13.23NCDEQ COMMENTS09.07.23VAPOR INTRUSIONMITIGATION SYSTEMPLAN - ROOFVI1.06SCALE: 1/16" = 1'-0"
1"CONCRETE SLABSOIL SUBGRADE4" MIN.1" AGGREGATE BELOW VAPOR COLLECTION PIPING2" AGGREGATE ABOVE VAPOR COLLECTION PIPING4" AGGREGATEVAPOR COLLECTION LOW PROFILE VAPOR COLLECTION PIPINGBASE LAYERVOC-RESISTANT CORE LAYER (40-MIL MIN.)PROTECTIVE LAYERREFERRED TO AS"VIMS MEMBRANE"IN OTHER DETAILSPROTECTIVE LAYERVOC-RESISTANT CORE LAYER (40-MIL MIN.)BASE LAYERCONCRETE SLAB12"x1" LOW PROFILE VAPOR COLLECTION PIPINGWRAPPED IN NON-WOVEN, NEEDLE PUNCHEDHDPE/GEOTEXTILE FILTER FABRIC4" AGGREGATE UNDER VIMS MEMBRANECOMPACTED SUBGRADE PER GEOTECHNICAL REQUIREMENTSREFERRED TO AS"VIMS MEMBRANE"IN OTHER DETAILSCABLE TIEREINFORCEMENT FABRICPROTECTIVE LAYERBASE LAYERVOC-RESISTANT CORE LAYER(40-MIL MIN.)VOC-RESISTANT CORE LAYER (40-MIL MIN.)1" MIN.3" MIN.12"LENGTH AND WIDTH OF CONCRETE SHALL EXTEND A MINIMUM OF8-INCHES FROM THE OUTSIDE EDGE OF PENETRATIONSNOTE:THIS IS A GENERAL DETAIL AND APPLIES TO ANY AND ALL UTILITIES WHERE THEY ARELESS THAN 3-INCHES APART. THE SPECIFIC LOCATIONS ARE NOT SHOWN ON VI1.00 AND VI1.01.1/8" MIN GAPPROTECTIVE LAYERVOC-RESISTANT CORE LAYER(40-MIL MIN.)BASE LAYERENCASE UTILITIES WITHIN 12" OFNON-SHRINK GROUT POUREDPRIOR TO PLACEMENT OF VIMSMEMBRANESPRAY APPLY OR HAND TROWEL40-MIL MIN. VOC-RESISTANT CORE LAYERTO VIMS MEMBRANE AND IN-BETWEENPENETRATIONS6" MIN.VIMS MEMBRANE (SEE DETAILS 01 & 02, SHEET VI3.01)PROTECTIVE LAYERBASE LAYERVOC-RESISTANT CORE LAYER (40-MIL MIN.)4" AGGREGATE BELOW VIMS MEMBRANECONCRETESLABCONCRETEWALLVOC-RESISTANT CORE LAYER (30-MIL MIN.)6"CONCRETE SLABPROTECTIVE LAYERBASE LAYERVOC-RESISTANT CORE LAYER (30-MIL MIN.)VOC-RESISTANT CORE LAYER (40-MIL MIN.)4" AGGREGATE BELOW VIMS MEMBRANE6"CONCRETE FOOTINGVIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)4" AGGREGATE BELOW VIMS MEMBRANEVIMS MEMBRANE PENETRATION(SEE DETAIL 03, SHEET VI3.01)1" BELOW DRAIN4" MIN.NOTE:FLOOR DRAIN LOCATIONS ARE NOT SHOWN ON SHEET VI1.00 AND VI1.01. SEE PLUMBING PLANS FORLOCATIONS.PROTECTIVE LAYERBASE LAYERVOC-RESISTANT CORE LAYER (40-MIL MIN.)STEP THREESTEP FOURSTEP TWOSTEP ONEDAMAGED VIMS MEMBRANECUT TO 1" BELOW MEMBRANEPLACE CONCRETENOTES:1.GENERAL CONTRACTOR SHALL COORDINATE WITH STRUCTURAL ENGINEER FOR THE PROJECT TO DETERMINE WHETHERCONCRETE DOWEL RODS ARE REQUIRED BASED ON THE DESIGN LOADS FOR THE CONCRETE PAD.2.EXISTING DAMAGE TO BE INSPECTED AND ASSESSED BY VIMS DESIGNER AND CERTIFIED VIMS INSTALLER.3.STEPS 1 & 4 TO BE PERFORMED BY GENERAL CONTRACTOR.4.STEPS 2 & 3 TO BE PERFORMED BY A CERTIFIED VIMS INSTALLER.5.STEP 2, APPLY 60-MIL MIN. OF TROWEL GRADE CORE MATERIAL TO THE SIDECUTS OF THE CONCRETE AND COVER WITH A NEWPIECE OF BASE LAYER.6.STEP 3, APPLY 60-MIL MIN. OF TROWEL GRADE CORE MATERIAL TO THE SIDE AND BOTTOM OF THE REPAIR AREA AND COVERWITH A NEW PIECE OF PROTECTIVE LAYER.7.STEP 4, CONCRETE TO BE INSTALLED BY OTHERS ACCORDING TO FINISH FLOOR PROJECT SPECIFICATIONS.BASE LAYERVOC-RESISTANT CORE LAYER (60-MIL MIN.)3"1"PROTECTIVE LAYERVOC-RESISTANT CORE LAYER (60-MIL MIN.)PROTECTIVE HDPE/GEOTEXTILE LAYERVOC-RESISTANT CORE LAYER APPLIEDDIRECTLY TO CONCRETE WALL (40-MIL. MIN.)NOTE:IF WATERPROOFING IS REQUIRED ON VERTICAL SURFACES, THE VIMS DESIGNERWILL BE NOTIFIED TO ENSURE THE APPROPRIATE MATERIALS ARE USED FORBOTH APPLICATIONS. SEE NOTE I.A.4 ON SHEET VI0.01.VIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)4" AGGREGATE BELOW VIMS MEMBRANENOTE:ENSURE EXTERIOR GRADE ELEVATION IS BELOW VIMS MEMBRANE TERMINATION.VIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)4" AGGREGATE BELOW VIMS MEMBRANEVIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)4" AGGREGATE BELOW VIMS MEMBRANETYPICAL HORIZONTAL MEMBRANE TERMINATION(SEE DETAIL 06, SHEET VI3.01)VIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)4" AGGREGATE BELOW VIMS MEMBRANENOTE:ENSURE A CONTINUOUS MINIMUM 4" OF AGGREGATE BENEATH THICKENED SLAB.TYPICAL HORIZONTAL MEMBRANE TERMINATION(SEE DETAIL 06, SHEET VI3.01)PREP & INSTALL PER VIMS MEMBRANEMANUFACTURERS SPECIFICATIONS (TYP.)(SEE DETAIL 08, SHEET VI3.01)VIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)4" AGGREGATE BELOW VIMS MEMBRANEWHERE OCCURSVIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)4" AGGREGATE BELOW VIMS MEMBRANEVIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)4" AGGREGATE BELOW VIMS MEMBRANE10" TO ≤24"6" TO ≤10"3" TO ≤6"VIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)4" AGGREGATE BELOW VIMS MEMBRANEVIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)4" AGGREGATE BELOW VIMS MEMBRANEVIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)4" AGGREGATE BELOW VIMS MEMBRANE≤3"VIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)4" AGGREGATE BELOW VIMS MEMBRANEVIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)4" AGGREGATE BELOW VIMS MEMBRANETYPICAL VERTICAL MEMBRANE TERMINATION(SEE DETAIL 07, SHEET VI3.01)COMPACTED SUBGRADEVIMS MEMBRANETERMINATIONVIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)4" AGGREGATE BELOW VIMS MEMBRANE1'PREP & INSTALL PER VIMS MEMBRANEMANUFACTURERS SPECIFICATIONS (TYP.)(SEE DETAIL 08, SHEET VI3.01)TYPICAL HORIZONTALMEMBRANE TERMINATION(SEE DETAIL 06, SHEET VI3.01)TYPICAL VERTICALMEMBRANE TERMINATION(SEE DETAIL 07, SHEET VI3.01)VIMS MEMBRANE(SEE DETAILS 01 & 02,SHEET VI3.01)4" AGGREGATE BELOWVIMS MEMBRANEWHERE OCCURSPREP & INSTALL PER VIMS MEMBRANEMANUFACTURERS SPECIFICATIONS (TYP.)(SEE DETAIL 08, SHEET VI3.01)TYPICAL VERTICAL MEMBRANE TERMINATION(SEE DETAIL 07, SHEET VI3.01)TYPICAL HORIZONTALMEMBRANE TERMINATION(SEE DETAIL 06, SHEET VI3.01)© 2020 CLINE DESIGN ASSOCIATES, PA EXPRESSLY RESERVES ITS COMMON LAW COPYRIGHT AND OTHER PROPERTY RIGHTS IN THESE PLANS. THESE PLANS ARE NOT TO BE REPRODUCED, CHANGED OR COPIED IN ANY FORM OR MANNER WHATSOEVER, NOR ARE THEY TO BE ASSIGNED TO ANY THIRD PARTY WITHOUT FIRST OBTAINING THE EXPRESSED WRITTEN PERMISSION AND CONSENT OF CLINE DESIGN ASSOCIATES, PA.DRAWN BY:CHECKED BY:REVISIONS:DATE:PROJECT:2923 S. Tryon St.Charlotte, NC 28203704/333-7272ClineDesignAssoc.comNOT FORCONSTRUCTIONAC, WOF71227190PTK09.07.2023CRQVXOWLQJ EQJLQHHUV DQG SFLHQWLVWV2701 LONG MEADOW ROADCHARLOTTE, NC 28208FAX. [phone]PH. [phone]ALLIANCE REALITY PARTNERS, LLC
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2198 WILKINSONE BLVD., CHARLOTTE, NCDESIGNDEVELOPMENT
DATEPRELIMINARY DRAFT04.13.23NCDEQ COMMENTS09.07.23VAPOR INTRUSIONMITIGATION SYSTEMDETAILS - MEMBRANEVI3.01010203040506070809101112151413161718192021NOT TO SCALENOT TO SCALENOT TO SCALENOT TO SCALENOT TO SCALESUB-SLAB VENT SYSTEMVIMS MEMBRANE CONFIGURATIONVIMS MEMBRANE PENETRATIONPENETRATION BANKTYPICAL MEMBRANE TERMINATION OVERLAPNOT TO SCALENOT TO SCALENOT TO SCALE; REF: STRUCTURAL DETAILS 3, 7, 9, & 17, SHEET S3.03TYPICAL VERTICAL MEMBRANE TERMINATIONVIMS MEMBRANE AT EXTERIOR TURNDOWNSLABNOT TO SCALE; REF: STRUCTURAL DETAILS 1 & 2, SHEET S3.02VIMS MEMBRANE AT THICKENED SLABNOT TO SCALE; REF: STRUCTURAL DETAIL 10, SHEET S3.01VIMS MEMBRANE AT TYPICAL TOP OFSLAB-ON-GRADE RAMP TRANSITIONTYPICAL HORIZONTAL MEMBRANETERMINATIONNOT TO SCALEVIMS MEMBRANE AT TYPICAL FLOOR DRAINNOT TO SCALEVIMS MEMBRANE REPAIR DETAILNOT TO SCALETYPICAL VIMS MEMBRANE INSTALLATION ONVERTICAL WALLNOT TO SCALE; REF: STRUCTURAL DETAILS 8 & 18, SHEET S3.03VIMS MEMBRANE AT EXTERIOR TURNDOWNSLAB AT PATIO/TERRACENOT TO SCALE; REF: STRUCTURAL DETAILS 14 AND 20, SHEET S3.11VIMS MEMBRANE AT EXTERIOR STEM WALLNOT TO SCALE; REF: STRUCTURAL DETAILS 8, SHEET S3.11, & 16, SHEET S3.12, & 6 SHEET S3.14VIMS MEMBRANE AT INTERIOR CONCRETERETAINING WALLNOT TO SCALE; REF: STRUCTURAL DETAIL 11, SHEET S3.01VIMS MEMBRANE AT TYPICAL BOTTOM OFSLAB-ON-GRADE RAMP TRANSITIONNOT TO SCALE; REF: STRUCTURAL DETAIL 7, SHEET S3.01VIMS MEMBRANE AT DEPRESSIONSSLAB-ON-GRADENOT TO SCALEVIMS MEMBRANE AT TYPICAL INTERIORCONCRETE COLUMN FOOTINGVIMS MEMBRANE AT WITHOUT FOOTINGNOT TO SCALE22NOT TO SCALE; REF: STRUCTURAL DETAILS 6 & 16, SHEET S3.11, 14 & 16, SHEET S3.12,AND 8, SHEET S3.13VIMS MEMBRANE AT PARKING GARAGECANTILEVER RETAINING WALLNOT TO SCALE; REF: STRUCTURAL DETAIL 16, SHEET S3.14VIMS MEMBRANE AT PARKING GARAGECANTILEVER RETAINING WALL
VIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)4" AGGREGATE BELOW VIMS MEMBRANEPREP & INSTALL PER VIMS MEMBRANEMANUFACTURERS SPECIFICATIONS (TYP.)(SEE DETAIL 08, SHEET VI3.01)PROVIDE 6" MINIMUM OF OVERLAP(SEE DETAIL 05, SHEET VI3.01)TYPICAL HORIZONTAL MEMBRANE TERMINATION(SEE DETAIL 06, SHEET VI3.01)ELEVATOR SUMP PT(SEE DETAIL 03, SHEET VI3.02)VIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)TYPICAL HORIZONTAL MEMBRANE TERMINATION(SEE DETAIL 06, SHEET VI3.01)PREP & INSTALL PER VIMS MEMBRANEMANUFACTURERS SPECIFICATIONS (TYP.)(SEE DETAIL 08, SHEET VI3.01)PROVIDE 6" MINIMUM OF OVERLAP(SEE DETAIL 05, SHEET VI3.01)ELEVATOR SUMP PT(SEE DETAIL 03, SHEET VI3.02)NOTE:ENSURE PARKING GARAGE GRADE ELEVATION IS AT OR BELOW VIMS MEMBRANE TERMINATION.010203040506070809101112151413161718192122NOT TO SCALE; REF: STRUCTURAL DETAIL 8, SHEET S3.02VIMS MEMBRANE AT ELEVATOR PITNOT TO SCALE; REF: STRUCTURAL DETAIL 7, SHEET S3.02VIMS MEMBRANE AT ELEVATOR SUMP PIT23© 2020 CLINE DESIGN ASSOCIATES, PA EXPRESSLY RESERVES ITS COMMON LAW COPYRIGHT AND OTHER PROPERTY RIGHTS IN THESE PLANS. THESE PLANS ARE NOT TO BE REPRODUCED, CHANGED OR COPIED IN ANY FORM OR MANNER WHATSOEVER, NOR ARE THEY TO BE ASSIGNED TO ANY THIRD PARTY WITHOUT FIRST OBTAINING THE EXPRESSED WRITTEN PERMISSION AND CONSENT OF CLINE DESIGN ASSOCIATES, PA.DRAWN BY:CHECKED BY:REVISIONS:DATE:PROJECT:2923 S. Tryon St.Charlotte, NC 28203704/333-7272ClineDesignAssoc.comNOT FORCONSTRUCTIONAC, WOF71227190PTK09.07.2023CRQVXOWLQJ EQJLQHHUV DQG SFLHQWLVWV2701 LONG MEADOW ROADCHARLOTTE, NC 28208FAX. [phone]PH. [phone]ALLIANCE REALITY PARTNERS, LLC
BROADSTONE WEST END
2198 WILKINSONE BLVD., CHARLOTTE, NCDESIGNDEVELOPMENT
DATEPRELIMINARY DRAFT04.13.23NCDEQ COMMENTS09.07.23VAPOR INTRUSIONMITIGATION SYSTEMDETAILS - MEMBRANEVI3.02NOT TO SCALE; REF: STRUCTURAL DETAIL 16, SHEET S3.03VIMS MEMBRANE AT ELEVATOR PIT IN PARKING GARAGE20
GAS TIGHT3" SHUTOFF VALVETOUGH GUY, ACCESS DOOR,MEDIUM SECURITY, 16x16-INCHGRAINGER ITEM #: 5YL96OR EQUIVALENT3-INCH I.D. SCH 40PVC VENT RISER16"x16" MEDIUM SECURITYACCESS PANEL(WHERE NEEDED)QUICK CONNECT FITTING304 STAINLESS STEEL HEXREDUCING BUSHING,MNPT x FNPT, 1/2" x 1/4"NOTES:1.THIS IS A GENERAL DETAIL. LOCATIONS OF ACCESS DOORS TO BE DETERMINED BY OWNERAND VIMS DESIGNER.2.FOR SAMPLE PORTS INSTALLED IN INTERIOR WALLS, QUICK-CONNECT FITTING BEINSTALLED FACING OUTWARD FOR ACCESS.3.TAP A 1/2-INCH THREAD FOR REDUCING FITTING. SEAL THREADS PERMANENTLY TO PIPEFOR GAS APPLICATIONS WITH PIPE THREAD SEALANT.4.APPLY GAS-RATED TEFLON TAPE ON INLINE COUPLER THREADS TO ALLOW FOR REMOVAL(YELLOW-THREAD TAPE)304 STAINLESS STEEL HEXREDUCING BUSHING, MNPT xFNPT, 1/2" X 1/4"GRAINGER ITEM #: 1RRP6OR EQUIVALENTQUICK CONNECT FITTINGMC SERIES SHUT-OFF MNPTINLINE COUPLER FOR MC &PMC INSERTSGRAINGER ITEM #: 2YCW8OR EQUIVALENTAURA AV-3 ROOF MOUNTED VENTILATOROR EQUIVALENT (SEE DETAIL 14, SHEET VI3.11)RISER BRACING AT 5-FOOT INTERVALSOR AS REQUIRED BY PLUMBING CODE3-INCH I.D. SCH. 40 PVC VENT RISERFURNISH PLACARD ON EXPOSED PIPING(SEE DETAIL 16, SHEET VI3.11)SEAL PENETRATION PER ROOFING SPECIFICATIONS24" MIN. OR 12" ABOVEANY SURROUNDING PARAPETTHIS NOTIFICATION IS TO BE INSTALLED INUTILITY AND MECHANICAL ROOMS AND PLACEDON THE WALLS AT EYE LEVEL AND SHALL NOTBE COVERED OVER.LOCATION OF NOTIFICATION TO BE DETERMINEDBY PROJECT CONTRACTOR, OWNER OR BUILDINGOFFICIAL.SIGN CAN BE PURCHASED AThttp://www.compliancesigns.com/terracon.shtml1'-2"10"WWW.TERRACON.COMTHIS BUILDING IS PROTECTED WITHA VAPOR INTRUSION MITIGATIONSYSTEM.ANY PROPOSED PENETRATION ORALTERATION OF FLOOR SLABREQUIRES NOTIFICATION OF THEOWNER AND INSPECTION BY AQUALIFIED VIMS MEMBRANEDESIGNER.WARNINGPLASTIC STICKER WITH ADHESIVE BACKING.LARGE LETTERS MIN 1/2" HIGHRED LETTERS ON WHITE BACKGROUND3" MIN. REQUIREDTHIS SIGN SHALL BE POSTED ON EACH VENTRISER APPROXIMATELY EVERY FIVE FEET, ANDALSO ON ANY EXPOSED RISER PIPING.4"4.5"VAPORSUB-SLAB VENT PIPEIF DAMAGEDIMMEDIATELYNOTIFYBUILDINGOWNERPLACARD CAN BE PURCHASED AThttp://www.compliancesigns.com/terracon.shtmlLOW PROFILE OUTLET WITH 3" CONNECTION3-INCH I.D. SCH. 40 PVCCONVEYANCE PIPELOW PROFILE VAPOR COLLECTION PIPELOW PROFILE OUTLET WITH 3" CONNECTION3-INCH I.D. SCH. 40 PVC CONVEYANCE PIPEVIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)2" AGGREGATE BELOW VIMS MEMBRANELOW PROFILE VAPOR COLLECTION PIPE1" AGGREGATE BELOW VENT PIPING3-INCH I.D. SCH. 40 PVC CROSS/TEEPLANPROFILEROOF PENETRATION TO VENTILATOR(SEE DETAIL 13, SHEET VI3.11)ROOF DECK3-INCH SCH. 40 PVC PIPE3-INCH SCH. 40 PVC 90° ELBOW3-INCH SCH. 40 PVC PIPE (2% POSITIVESLOPE MIN. TO ALLOW UPWARD AIR FLOW)VENT RISER FROM SUB-SLAB3-INCH SCH. 40 PVC 90° ELBOWFURNISH PLACARD ON VENT RISER APPROXIMATELY EVERY 5 FEETAND ON ANY EXPOSED PIPE (SEE DETAIL 16, SHEET VI3.11)12"1"3-INCH I.D. SCH. 40 PVC NO HUB COUPLING VENT PIPINGLOW PROFILE VAPOR COLLECTION PIPING WRAPPEDIN NON-WOVEN, NEEDLE PUNCHED FILTER FABRICLOW PROFILE END OUTLET WITH3" OUTLET CONNECTION3-INCH DIA. COUPLING3-INCH SCH. 40 PVC PIPING3-INCH SCH. 40 PVC ELBOWTO ROOF VENTING1/4-INCH BUSHING AND QUICK-CONNECT FITTINGVIMS MEMBRANE PENETRATION(SEE DETAIL 03, SHEET VI3.01)FURNISH PLACARD ON VENT RISER APPROXIMATELYEVERY 5 FEET AND ON ANY EXPOSED PIPING(SEE DETAIL 16, SHEET VI3.11)3-INCH I.D. SCH. 40 PVC VENT RISER3-INCH SCH. 40 PVC ELBOWGAS TIGHT 3-INCH FNPT SHUTOFF VALVE(SEE DETAIL 12, SHEET VI3.11)16"x16" MEDIUM SECURITY ACCESS PANEL(SEE DETAIL 12, SHEET VI3.11)QUICK-CONNECT FITTING WITH REDUCING BUSHING(SEE DETAIL 12, SHEET VI3.11)3-INCH I.D. SCH. 40 PVC CONVEYANCE PIPEVIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)VIMS MEMBRANE PENETRATION(SEE DETAIL 03, SHEET VIMS-M)FURNISH PLACARD ON VENT RISER APPROXIMATELYEVERY 5 FEET AND ON ANY EXPOSED PIPING(SEE DETAIL 16, SHEET VI3.11)QUICK-CONNECT FITTINGWITH REDUCING BUSHING(SEE DETAIL 12, SHEET VI3.11)3-INCH I.D. SCH. 40 PVC VENT RISER3-INCH SCH. 40 PVC ELBOWGAS TIGHT 3-INCH FNPT SHUTOFF VALVE(SEE DETAIL 12, SHEET VI3.11)16"x16" MEDIUM SECURITY ACCESS PANEL(SEE DETAIL 12, SHEET VI3.11)3-INCH I.D. SCH. 40 PVC CONVEYANCE PIPEVIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VIMS-M)VIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)2" AGGREGATE BELOW VIMS MEMBRANELOW PROFILE VAPOR COLLECTION PIPE1" AGGREGATE BELOW VENT PIPINGLOW PROFILE OUTLET WITH 3" CONNECTION3-INCH I.D. SCH. 40 PVCCONVEYANCE PIPE3-INCH SCH. 40 PVC ELBOW3/8-INCH DRAIN HOLESVIMS MEMBRANE PENETRATION(SEE DETAIL 03, SHEET VI3.01)VIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)3-INCH I.D. SCH. 40 PVC CONVEYANCE PIPE10" TO ≤24"6" TO ≤10"VIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)3-INCH I.D. SCH. 40 PVC CONVEYANCE PIPE3-INCH SCH. 40 PVC ELBOW3-INCH SCH. 40 PVC ELBOWTYPICAL HORIZONTAL MEMBRANE TERMINATION(SEE DETAIL 06, SHEET VI3.01)PREP & INSTALL PER MANUFACTURERSSPECIFICATIONS (TYP.)(SEE DETAIL 08, SHEET VI3.01)VIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)VIMS MEMBRANE PENETRATION(SEE DETAIL 03, SHEET VI3.01)FURNISH PLACARD ON VENT RISERAPPROXIMATELY EVERY 5 FEETAND ON ANY EXPOSED PIPING(SEE DETAIL 16, SHEET VI3.11)3-INCH I.D. SCH. 40 PVC VENT RISER3-INCH SCH. 40 PVC ELBOWGAS TIGHT 3-INCH FNPT SHUTOFF VALVE(SEE DETAIL 12, SHEET VI3.11)16"x16" MEDIUM SECURITY ACCESS PANEL(SEE DETAIL 12, SHEET VI3.11)QUICK-CONNECT FITTINGWITH REDUCING BUSHING(SEE DETAIL 12, SHEET VI3.11)3-INCH I.D. SCH. 40 PVCCONVEYANCE PIPEPREP & INSTALL PER VIMS MEMBRANEMANUFACTURERS SPECIFICATIONS (TYP.)(SEE DETAIL 08, SHEET VI3.01)TYPICAL HORIZONTALMEMBRANE TERMINATION(SEE DETAIL 06, SHEET VI3.01)VIMS MEMBRANE PENETRATION(SEE DETAIL 03, SHEET VI3.01)TYPICAL VERTICAL MEMBRANE TERMINATION(SEE DETAIL 07, SHEET VI3.01)3-INCH SCH. 40 PVC ELBOWVIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)2" AGGREGATE BELOW VIMS MEMBRANELOW PROFILE VAPOR COLLECTION PIPE1" AGGREGATE BELOW VENT PIPING3-INCH I.D. SCH. 40 PVC CONVEYANCE PIPELOW PROFILE OUTLET WITH 3" CONNECTION3-INCH SCH. 40 PVC ELBOWTYPICAL HORIZONTALMEMBRANE TERMINATION(SEE DETAIL 06, SHEET VI3.01)TYPICAL VERTICAL MEMBRANE TERMINATION(SEE DETAIL 07, SHEET VI3.01)VIMS MEMBRANE(SEE DETAILS 01 & 02,SHEET VI3.01)3-INCH I.D. SCH. 40 PVCCONVEYANCE PIPEPREP & INSTALL PER VIMS MEMBRANEMANUFACTURERS SPECIFICATIONS (TYP.)(SEE DETAIL 08, SHEET VI3.01)VIMS MEMBRANE PENETRATION(SEE DETAIL 03, SHEET VI3.01)3-INCH SCH. 40 PVC ELBOW3-INCH SCH. 40 PVC ELBOWVIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)4" AGGREGATE BELOW VIMS MEMBRANETYPICAL HORIZONTALMEMBRANE TERMINATION(SEE DETAIL 06, SHEET VI3.01)PREP & INSTALL PER VIMS MEMBRANEMANUFACTURERS SPECIFICATIONS (TYP.)(SEE DETAIL 08, SHEET VI3.01)VIMS MEMBRANE PENETRATION(SEE DETAIL 03, SHEET VI3.01)3-INCH SCH. 40 PVC ELBOW3-INCH SCH. 40 PVC ELBOWVIMS MEMBRANE PENETRATION(SEE DETAIL 03, SHEET VI3.01)2-INCH I.D. SCH. 40 PVC TRANSITION PIPEVIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)4" AGGREGATE BELOW VIMS MEMBRANEVIMS MEMBRANE(SEE DETAILS 01 & 02, SHEET VI3.01)4" AGGREGATE BELOW VIMS MEMBRANEAGGREGATE2" CAP2" SCH. 40 PVC SCREEN 0.020" SLOTWRAPPED WITH GEOTEXTILE FABRIC6" MIN.6" MIN.6" MIN.1/4" POLYETHYLENEPOROUS STONE IMPLANT2'3-INCH SCH. 40 STEEL PIPE FOR SLEEVETHROUGH EXTERIOR TURNDOWN SLAB11"8" FLUSH MOUNT HAND HOLE2-INCH PVC SCH 40. CONDUIT PIPE2-INCH PVC SCH 40. LONG SWEEP 90° RADIUS ELBOWCONCRETE SLAB© 2020 CLINE DESIGN ASSOCIATES, PA EXPRESSLY RESERVES ITS COMMON LAW COPYRIGHT AND OTHER PROPERTY RIGHTS IN THESE PLANS. THESE PLANS ARE NOT TO BE REPRODUCED, CHANGED OR COPIED IN ANY FORM OR MANNER WHATSOEVER, NOR ARE THEY TO BE ASSIGNED TO ANY THIRD PARTY WITHOUT FIRST OBTAINING THE EXPRESSED WRITTEN PERMISSION AND CONSENT OF CLINE DESIGN ASSOCIATES, PA.DRAWN BY:CHECKED BY:REVISIONS:DATE:PROJECT:2923 S. Tryon St.Charlotte, NC 28203704/333-7272ClineDesignAssoc.comNOT FORCONSTRUCTIONAC, WOF71227190PTK09.07.2023CRQVXOWLQJ EQJLQHHUV DQG SFLHQWLVWV2701 LONG MEADOW ROADCHARLOTTE, NC 28208FAX. [phone]PH. [phone]ALLIANCE REALITY PARTNERS, LLC
BROADSTONE WEST END
2198 WILKINSONE BLVD., CHARLOTTE, NC
D
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IG
NDEVELOPMENT
DATEPRELIMINARY DRAFT04.13.23NCDEQ COMMENTS09.07.23VAPOR INTRUSIONMITIGATION SYSTEMDETAILS - PIPINGVI3.110102030405060708091011121514131617181920212223NOT TO SCALEVAPOR COLLECTION PIPE TRANSITION TOCONVEYANCE PIPEVENT PIPING SAMPLE PORTNOT TO SCALENOT TO SCALENOT TO SCALEROOF-MOUNTED VENTILATORVIMS MEMBRANE IDENTIFICATION SIGNNOT TO SCALEPLACARD AT VENT RISER OUTLETROOF PENETRATION DETAILNOT TO SCALENOT TO SCALEVENT RISER VERTICAL TO HORIZONTALTRANSITION BELOW ROOF DECKNOT TO SCALE12" LOW PROFILE VENT PIPINGNOT TO SCALESUB-SLAB MONITORING POINTTEMPORARYVIEWCOMPLETEDVIEW1-1/4 INCH DIAMETERHDPE SLEEVESEAL MEMBRANE TO SLEEVEFOR PENETRATION(SEE DETAIL 03, SHEET VI3.01)THREADED ROD,TO BE REMOVEDAFTER SLAB PLACEMENTVIMS MEMBRANE4" AGGREGATE LAYER4" CONCRETE SLABSTAINLESS STEEL VAPOR PINNEOPRENE SEALAIR TIGHT PLASTIC CAPFLUSH STAINLESS STEELSECURE COVERNOT TO SCALE; REF: STRUCTURAL DETAILS 1 & 2, SHEET S3.02VENT RISER AT THICKENED SLAB (VR1-VR17,AND VR20-VR24)NOT TO SCALEVENT RISER AT INTERIOR WALL (VR25)NOT TO SCALE; REF: STRUCTURAL DETAILS 1 & 2, SHEET S3.02VAPOR COLLECTION PIPE AT THICKENED SLABNOT TO SCALE; REF: STRUCTURAL DETAIL 7, SHEET S3.01CONVEYANCE PIPE AT DEPRESSIONSSLAB-ON-GRADENOT TO SCALE; REF: STRUCTURAL DETAIL 2, SHEET S3.11VENT RISER AT INTERIOR CONCRETERETAINING WALL (VR18 & VR19)NOTE:SUB-SLAB MONITORING POINTS CAN BE INSTALLED AFTER SLAB POUR.NOT TO SCALE; REF: STRUCTURAL DETAIL 16, SHEET S3.14VAPOR COLLECTION PIPE TRANSITION ATPARKING GARAGE CANTILEVER RETAININGWALLNOT TO SCALE; REF: STRUCTURAL DETAILS 16, SHEET S3.11, AND 14 & 16, SHEET S3.12CONVEYANCE PIPING AT PARKING GARAGECANTILEVER RETAINING WALLNOT TO SCALE; REF: STRUCTURAL DETAILS 8, SHEET S3.11, & 16, SHEET S3.12, & 6 SHEET S3.14CONVEYANCE PIPE AT INTERIOR CONCRETERETAINING WALLNOT TO SCALE; REF: STRUCTURAL DETAILS 1 & 2, SHEET S3.02TRANSITION PIPE AT THICKENED SLABSUB-SLAB MONITORING POINT WITH EXTERIOR FLUSH MOUNT HAND HOLENOT TO SCALE; REF: STRUCTURAL DETAILS 3, 7, 9, & 17, SHEET S3.03

Facilities | Environmental | Geotechnical | Materials C-1

Appendix C
Nitra-Seal Specifications

Client:
Project:
Date:
Submitted By:
Prose Rhyne Rd
8/15/22
Jason Wilt - [e-mail] 470-774-7953
Technology
A Multi-Layer Base with Innovative
Nitrile-Advanced Asphalt Latex Technology
Nitra-Seal is an update/improvement on current vapor
barrier systems, providing a more chemically resistant
spray-applied core material.1 Nitra-Seal is a triple-layer
system. The Nitra-Base layer (bottom) and the
Land Science Bond layer (top) are composed of a HDPE
material bonded to a geo-textile on the out-facing side.
HDPE is known for chemical resistance, high tensile
strength, excellent stress-crack resistance and highly
reliable subsurface containment. The geo-textile, which
is physically bonded to the chemical resistant layer,
accomplishes two goals; it allows the Land Science Bond
layer to adhere to the slab, and provides friction course
between the Nitra-Base layer and the soil. The
Nitra-Core layer is composed of a unique, nitrile-
advanced asphalt latex which also provides additional
protection against vapor transmission. Nitrile has been
proven to offer exceptional chemical resistance in a wide
range of applications. This layer creates a highly-effective
seal around slab penetrations and eliminates the need for
mechanical fastening at termination points.
1. U.S. and international patents pending.
Nitrile-Advanced Asphalt Latex Compared to Generic SBR Asphalt Latex
Generic SBR Asphalt Latex
Higher permeability increases risk of contaminant sorption
Longer, slower application time
Equipment requires petroleum-based solvents to clean
Nitrile-Advanced Asphalt Latex
Lab-proven to provide 10x higher chemical resistance
Easier and faster to apply
Equipment requires only soap and water to clean
TCE diffusion rates in Nitrile-Advanced Asphalt Latex barrier
systems vs those utilizing Generic (SBR) Asphalt.
0
0 5 10 15
Time (days)Total TCE Mass Diffused (µg)20 25
200
400
600
800
1000
1200
1400
1600
1800
Nitrile-Advanced Asphalt Latex Generic (SBR) Asphalt
Nitrile-Advanced Asphalt Latex vs. Generic Asphalt LatexPerformance Comparison
About Nitra-Seal 7
Nitra-Seal Specification V 2.1

Nitra-Seal Vapor Intrusion Barrier
Fluid-Applied Gas Barrier
Version 2.1

Note: If membrane will be subjected to hydrostatic pressure, please contact Land Science® for proper recommendations.

PART 1 – GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the contract, including general and supplementary conditions and Division 1 specification
sections, apply to this section.

1.2 SUMMARY

A. This section includes the following:

1. Substrate preparation:
2. Vapor intrusion barrier components:
3. Seam sealer and accessories.

B. Related Sections: The following sections contain requirements that relate to this section:

1. Division 2 Section “Earthwork”, “Pipe Materials”, “Sub-drainage Systems”, “Gas Collection Systems”:
2. Division 3 Section “Cast-in-Place Concrete” for concrete placement, curing, and finishing:
3. Division 5 Section “Expansion Joint Cover Assemblies”, for expansion-joint covers assemblies and installation.

1.3 PERFORMANCE REQUIREMENTS

A. General: Provide a chemically resistant vapor intrusion barrier system that prevents the passage of methane gas and/or volatile
organic compound vapors. Barrier system is to include a nitrile-latex spray applied membrane component demonstrating
excellent sealing of sub-slab penetrations and barrier terminations while exhibiting excellent chemical resistance. Barrier
system must comply with physical requirements as demonstrated by testing of manufacturer’s vapor intrusion barrier formulation and system design.

1.4 SUBMITTALS

A. Submit product data for each type of vapor intrusion barrier, including manufacturer’s printed instructions for evaluating and
preparing the substrate, technical data, and tested physical and performance properties.

B. Project Data - Submit shop drawings showing extent of vapor intrusion barrier, including details for overlaps, flashing,
penetrations, and other termination conditions.

C. Samples – Submit representative samples of the following for approval:

1. Vapor intrusion barrier components.

D. Certified Installer Certificates – Submit certificates signed by manufacturer certifying that installers comply with requirements
under the “Quality Assurance” article.

1.5 QUALITY ASSURANCE

A. Installer Qualifications: Engage an experienced installer who has been trained and certified in writing by the membrane
manufacturer, Land Science™ for the installation of the Nitra-Seal™ System.

B. Manufacturer Qualification: Obtain vapor intrusion barrier materials and system components from a single manufacturer
source Land Science.

C. Field Sample: Apply vapor intrusion barrier system field sample to 100 ft2 (9.3 m2) of field area to demonstrate
application, detailing, thickness, texture, and standard of workmanship.

1. Notify engineer or special inspector one week in advance of the dates and times when field sample will be prepared.

2. If engineer or special inspector determines that field sample does not meet requirements, reapply field sample until
field sample is approved.

3. Retain and maintain approved field sample during construction in an undisturbed condition as a standard for judging the
completed methane and vapor intrusion barrier. An undamaged field sample may become part of the completed work.
D. Pre-installation Conference: A pre-installation conference shall be held prior to application of the vapor intrusion barrier
system to assure proper site and installation conditions, to include contractor, applicator, architect/engineer, other trades
influenced by vapor intrusion barrier installation and special inspector (if any).
Nitra-Seal Specification V 2.1

1.6 DELIVERY, STORAGE, AND HANDLING

A. Deliver materials to project site as specified by manufacturer labeled with manufacturer’s name, product brand name and
type, date of manufacture, shelf life, and directions for storing and mixing with other components.

B. Store materials as specified by the manufacturer in a clean, dry, protected location and within the temperature range required
by manufacturer. Protect stored materials from direct sunlight. If freezing temperatures are expected, necessary steps should
be taken to prevent the freezing of the Nitra-Core and Nitra-Core Detail components.

C. Remove and replace material that cannot be applied within its stated shelf life.

1.7 PROJECT CONDITIONS

A. Protect all adjacent areas not to be installed on. Where necessary, apply masking to prevent staining of surfaces to remain
exposed wherever membrane abuts to other finish surfaces.

B. Perform work only when existing and forecasted weather conditions are within manufacturer’s recommendations for the
material and application method used.

C. Minimum clearance of 24 inches is required for application of product. For areas with less than 24-inch clearance, the
membrane may be applied by hand using Nitra-Core Detail.

D. Ambient temperature shall be within manufacturer’s specifications. (Greater than +45ºF/+7ºC.) Consult manufacturer for the
proper requirements when desiring to apply Nitra-Core below 45ºF/7ºC.

E. All plumbing, electrical, mechanical and structural items to be under or passing through the vapor intrusion barrier system
shall be positively secured in their proper positions and appropriately protected prior to membrane application.

F. Vapor intrusion barrier shall be installed before placement of fill material and reinforcing steel. When not possible, all exposed
reinforcing steel shall be masked by general contractor prior to membrane application.

G. Stakes used to secure the concrete forms shall not penetrate the vapor intrusion barrier system after it has been installed. If
stakes need to puncture the vapor intrusion barrier system after it has been installed, the necessary repairs need to be made
by a certified Nitra-Seal applicator. To confirm the staking procedure is in agreement with the manufacture’s recommendation,
contact Land Science.

1.8 WARRANTY

A. General Warranty: The special warranty specified in this article shall not deprive the owner of other rights the owner may have
under other provisions of the contract documents, and shall be in addition to, and run concurrent with, other warranties made
by the contractor under requirements of the contract documents.

B. Special Warranty: Submit a written warranty signed by vapor intrusion barrier manufacturer agreeing to repair or replace
vapor intrusion barrier that does not meet requirements or that does not remain methane gas and/or volatile organic
compound vapor tight within the specified warranty period. Warranty does not include failure of vapor intrusion barrier due to
failure of substrate prepared and treated according to requirements or formation of new joints and cracks in the attached to
structures that exceed 1/16 inch (1.58 mm) in width.

1. Warranty Period: 1 year after date of substantial completion. Longer warranty periods are available upon request to the
manufacturer.

C. Labor and material warranties are available upon request to the manufacturer.
PART 2 – PRODUCTS
2.1 MANUFACTURERS

A. Nitra-Seal; Land Science™ a division of REGENESIS, San Clemente, CA. [phone]

1. Nitra-Base sheet layer
2. Nitra-Core spray layer and Nitra-Core Detail
3. Land Science Bond protection layer

2.2 VAPOR INTRUSION BARRIER SPRAY MATERIALS

A. Fluid applied vapor intrusion barrier system – Nitra-Core; a single course, high build, nitrile-modified asphalt emulsion.
Waterborne and spray applied at ambient temperatures. A nominal thickness of 40 dry mils, unless specified otherwise.
Non-toxic and odorless. Nitra-Core Detail has similar properties with greater viscosity and is trowel or brush applied.
Manufactured by Land Science, a division of REGENESIS.
Nitra-Seal Specification V 2.1

B. Fluid applied vapor intrusion barrier physical properties.

Nitra-Core Properties

PROPERTIES TEST METHOD NITRA-CORE
Application to Nitra-Base 40 mils (23 ft2/gal)

Typical Uncured Properties
Specific Gravity ASTM D 244 1.0
Brookfield Viscosity ASTM D2196 75 – 90 centipoises
pH Oakton 10 – 13
Residue Content ASTM D2939 62 – 65%
Color Brown to Black
Demulsibility ASTM D6936 35 – 40%
Non-Toxic No Solvent
Shelf Life 6 months

Typical Cured Properties w Nitra-
Base and LS Bond

PCE Diffusion Coefficient GeoKinetics Method 9.1 x 10-12 m2/day
Benzene Diffusion Coefficient GeoKinetics Method 4.9 x 10-13 m2/day

Packaging: 55 gal. drums and 275 gal.totes

2.3 VAPOR INTRUSION BARRIER SHEET MATERIALS

A. The Nitra-Base layer is chemically resistant sheets comprised of a 10 mil high density polyethylene sheet thermally
bonded to a 3 ounce non-woven geotextile.

B. Sheet Course Usage

1. As foundation base layer, use Nitra-Base layer and/or other base sheet as required or approved by the
manufacturer.

Nitra-Base Properties

PROPERTIES TEST METHOD NITRA-BASE
Film Thickness 23 mil
Color Clear HDPE/White Geotextile
Weight ASTM D751 – 06 6.85 oz/yd2
Tensile Strength (grab) ASTM D751 – 06 CD – 270.5 lbf.
MD – 350.9 lbf.
Tear Strength (Trapezoidal) ASTM D751 – 06 CD – 48.3 lbf.
MD – 44.4 lbf
Puncture Resistance ASTM D4833-07 103.1 lbf.
Life Expectancy ASTM E 154-93 Indefinite
Elongation ASTM D751 – 06 CD – 26.0%
MD – 32.6%
Chemical Resistance Excellent
Packaging: 102” x 150’

C. Land Science Bond layer is a chemically resistant sheets comprised of a 5 mil high density woven polyethylene sheet thermally
bonded to a 3 oz non-woven geotextile.
1. As top protective layer, use Land Science Bond layer and/or other protection as required or approved by the manufacturer.
Nitra-Seal Specification V 2.1

Land Science Bond Properties

PROPERTIES TEST METHOD LAND SCIENCE BOND
Film Thickness 18 mil
Color Gray HDPE - White Geotextile
Weight ASTM D751 – 06 6.76 oz/yd2
Tensile Strength (grab) ASTM D751 – 06 CD – 186.8 lbf.
MD – 153.4 lbf.
Tear Strength (Trapezoidal) ASTM D751 – 06 CD – 36.7 lbf.
MD – 28.0 lbf
Puncture Resistance ASTM D4833-07 61.2 lbf.
Life Expectancy ASTM E 154-93 Indefinite
Elongation ASTM D751 – 06 CD – 72.1%
MD – 49.6%
Chemical Resistance Excellent
Packaging: 102” x 150’ Roll

2.4 AUXILLARY MATERIALS

A. Sheet Flashing: 60-mil reinforced modified asphalt sheet good with double-sided adhesive.

B. Detail Fabric: Reinforcing Strip recommended polypropylene and polyester fabric.

C. Gas Venting Materials: TerraVent, and associated fittings.

D. Seam Detailing Sealant Mastic: Nitra-Core Detail, a high or medium viscosity polymer modified water-based asphalt
material.

1. Back Rod: Closed-cell polyethylene foam.
PART 3 – EXECUTION
3.1 AUXILIARY MATERIALS

A. Examine substrates, areas, and conditions under which vapor intrusion barrier will be applied, with installer present, for
compliance with requirements. Do not proceed with installation until unsatisfactory conditions have been corrected.

3.2 SUBGRADE SURFACE PREPARATION

A. Verify substrate is prepared according to manufacturer’s recommendations. On a horizontal surface, the substrate should be
free from material that can potentially puncture the vapor intrusion barrier. Additional protection or cushion layers might be
required if the earth or gravel substrate contains too many jagged points and edges that could puncture one or more of the
system components. Contact manufacturer to confirm substrate is within manufactures recommendations.

B. Nitra-Seal can accommodate a wide range of substrates, including but not limited to compacted earth, sand, aggregate, and
mudslabs.

1. Compacted Earth: Remove pieces of debris, gravel and/or any other material that can potentially puncture the Nitra-
Base. Remove any debris from substrate that can potentially puncture the Nitra-Base prior to application.

2. Sand: A sand subgrade that requires no additional preparation, provided any material that can potentially puncture the
Nitra-Base layer is not present.

3. Aggregate: Contact the manufacturer to ensure the aggregate layer will not be detrimental to the membrane. The
gravel layer must be compacted and rolled flat. Ideally a ¾” minus gravel layer with rounded edges should be
specified; however the Nitra-Seal system can accommodate a wide variety of different substrates. Contact Land
Science if there are questions regarding the compatibility of Nitra-Seal and the utilized substrate. Exercise caution when
specifying pea gravel under the membrane, if not compacted properly, pea gravel can become an unstable substrate.

4. Mudslabs: The use of a mubslab under the Nitra-Seal system is acceptable, contact Land Science for job-specific
requirements.
C. Mask off adjoining surface not receiving the vapor intrusion barrier system to prevent the spillage or over spray affecting other
construction.
Nitra-Seal Specification V 2.1

D. Earth, sand or gravel subgrades should be prepared and compacted to local building code requirements.

3.3 CONCRETE SURFACE PREPARATION

A. Clean and prepare concrete surface to manufacturer’s recommendations. In general, only apply the Nitra-Core material to dry,
clean and uniform substrates. Concrete surfaces must be a light trowel, light broom or equivalent finish. Remove fins, ridges
and other projections and fill honeycomb, aggregate pockets, grout joints and tie holes, and other voids with hydraulic
cement or rapid-set grout. It is the applicator’s responsibility to point out unacceptable substrate conditions to the general
contractor and ensure the proper repairs are made.

B. When applying the Nitra-Core or Nitra-Core Detail material to concrete it is important to not apply the product over standing
water. Applying over standing water will result in the membrane not setting up properly on the substrate

C. Surfaces may need to be wiped down or cleaned prior to application. This includes, but is not limited to, the removal of forming
oils, concrete curing agents, dirt accumulation, and other debris. Contact form release agent manufacturer or concrete curing
agent manufacturer for VOC content and proper methods for removing the respective agent.

D. Applying the Nitra-Core to “green” concrete is acceptable and can be advantageous in creating a superior bond to the concrete
surface. To help reduce blistering, apply a primer coat of only the asphalt component of the Nitra-Core system. Some blistering
of the membrane will occur and may be more severe on walls exposed to direct sunlight. Blistering is normal and will subside
over time. Using a needle nose depth gauge confirm that the specified mil thickness has been applied.

3.4 PREPARATIONS AND TREATMENT OF TERMINATIONS

A. Prepare the substrate surface in accordance with Section 3.3 of this document. Concrete surfaces that are not a light trowel, light
broom or equivalent finish, will need to be repaired.

B. Terminations on horizontal and vertical surfaces should extend 6” onto the termination surface. Job specific conditions may prevent
a 6” termination. In these conditions, contact manufacturer for recommendations.

C. Apply 60 mils of Nitra-Core to the terminating surface and then embed the Nitra-Base layer by pressing it firmly into the Nitra-Core
layer. Next, apply 40 mils of Nitra-Core to the Nitra-Base layer. When complete, apply the Land Science Bond layer. After the
placement of the Land Science Bond layer is complete, apply a final 30 mil seal of the Nitra-Core layer over the edge of the
termination. For further clarification, refer to the termination detail provided by manufacturer.

D. The stated termination process is appropriate for terminating the membrane onto exterior footings, pile caps, interior footings and
grade beams. When terminating the membrane to stem walls or vertical surfaces the same process should be used.

3.5 PREPARATIONS AND TREATMENT OF PENETRATIONS

A. All pipe penetrations should be securely in place prior to the installation of the Nitra-Seal system. Any loose penetrations should be
secured prior to Nitra-Seal application, as loose penetrations could potentially exert pressure on the membrane and damage the
membrane after installation.

B. To properly seal around penetrations, cut a piece of the Nitra-Base layer that will extend 6” beyond the outside perimeter of the
penetration. Cut a hole in the Nitra-Base layer just big enough to slide over the penetration, ensuring the Nitra-Base layer fits snug
against the penetration, this can be done by cutting an “X” no larger than the inside diameter of the penetration. There should not
be a gap larger than a 1/8” between the Nitra-Base layer and the penetration. Other methods can also be utilized, provided, there
is not a gap larger than 1/8” between the Nitra-Base layer and the penetration.
C. Seal the Nitra-Base layer using Nitra-Core or Nitra-Core Detail to the underlying Nitra-Base layer.

D. Apply one coat of Nitra-Core Detail or Nitra-Core spray to the Nitra-Base layer and around the penetration at a thickness of 30
mils. Penetrations should be treated in a 6-inch radius around penetration and 3 inches onto penetrating object.

E. Embed a Detail Fabric after the first application of the Nitra-Core spray or Nitra-Core Detail material and then apply a second
30 mil coat over the embedded joint reinforcing strip ensuring its complete saturation of the embedded strip and tight seal
around the penetration.
F. After the placement of the Land Science Bond layer, a cable tie should then be placed around the finished penetration.
The cable tie should be snug, but not overly tight so as to slice into the finished seal.

OPTION: A final application of Nitra-Core may be used to provide a finishing seal after the Land Science Bond layer has been
installed.

NOTE: Metal or other slick penetration surfaces may require treatment in order to achieve proper adhesion. For plastic pipes, sand
paper may be used to achieve a profile, an emery cloth is more appropriate for metal surfaces. An emery cloth should also be used
to remove any rust on metal surfaces.

3.6 NITRA-BASE LAYER INSTALLATION

A. Install the Nitra-Base layer over substrate material in one direction with six-inch overlaps and the geotextile (fabric side)
facing down.

B. Secure the Nitra-Base seams by applying 60 mils of Nitra-Core between the 6” overlapped sheets with the geotextile
Nitra-Seal Specification V 2.1

side down.

C. Visually verify there are no gaps/fish-mouths in seams.
D. For best results, install an equal amount of Nitra-Base and Nitra-Core in one day. Leaving unsprayed Nitra-Base overnight
might allow excess moisture to collect on the Nitra-Base. If excess moisture collects, it needs to be removed.

NOTE: In windy conditions it might be necessary to encapsulate the seam by spraying the Nitra-Core layer over the completed Nitra-
Base seam.

3.7 NITRA-CORE APPLICATION

A. Set up spray equipment according to manufacturer’s instructions.

B. Mix and prepare materials according to manufacturer’s instructions.

C. The two catalyst nozzles (8001) should be adjusted to cross at about 18" from the end of the wand. This apex of catalyst and
emulsion spray should then be less than 24" but greater than 12” from the desired surface when spraying. When properly sprayed
the fan pattern of the catalyst should range between 65° and 80°.

D. Adjust the amount of catalyst used based on the ambient air temperature and surface temperature of the substrate receiving the
membrane. In hot weather use less catalyst as hot conditions will quickly “break” the emulsion and facilitate the curing of the
membrane. In cold conditions and on vertical surfaces use more catalyst to “break” the emulsion quicker to expedite curing and set
up time in cold conditions.

E. To spray the Nitra-Core layer, pull the trigger on the gun. A 42° fan pattern should form when properly sprayed. Apply one spray
coat of Nitra-Core to obtain a seamless membrane free from pinholes or shadows, with an average dry film thickness of 40
mils (1.0 mm).

F. Apply the Nitra-Core layer in a spray pattern that is perpendicular to the application surface. The concern when spraying at an angle
is that an area might be missed. Using a perpendicular spray pattern will limit voids and thin spots, and will also create a uniform and
consistent membrane.

G. Verify film thickness of vapor intrusion barrier every 500 ft2. (46.45 m2), for information regarding Nitra-Seal quality control
measures, refer to the quality control procedures in Section 3.9 of this specification.

H. The membrane will generally cure in 24 to 48 hours. As a rule, when temperature decreases or humidity increases, the curing of
the membrane will be prolonged. The membrane does not need to be fully cured prior the placement of the Land Science Bond
layer, provided mil thickness has been verified and a smoke test will be conducted.

I. Do not penetrate membrane after it has been installed. If membrane is penetrated after the membrane is installed, it is the
responsibility of the general contractor to notify the certified installer to make repairs.

J. If applying to a vertical concrete wall, apply Nitra-Core directly to concrete surface and use manufacturer’s
recommended protection material based on site specific conditions. If applying Nitra-Seal against shoring, contact
manufacturer for site specific installation instructions.

NOTE: Care should be taken to not trap moisture between the layers of the membrane. Trapping moisture may occur from
applying a second coat prior to the membrane curing. Repairs and detailing may be done over the Nitra-Core layer when not fully
cured.

3.8 LAND SCIENCE BOND PROTECTION COURSE INSTALLATION

A. Install Land Science Bond protection course perpendicular to the direction of the Nitra-Base course with overlapped seams
over nominally cured membrane no later than recommended by manufacturer and before starting subsequent construction
operations.

B. Sweep off any water that has collected on the surface of the Nitra-Core layer, prior to the placement of the Land Science Bond
layer.

C. Overlap and seam the Land Science Bond layer in the same manner as the Nitra-Base layer.

3.9 QUALITY ASSURANCE

A. The Nitra-Seal system must be installed by a trained and certified installer approved by Land Science.

B. For projects that will require a material or labor material warranty, Land Science will require a manufacturer’s representative
or certified 3rd party inspector to inspect and verify that the membrane has been installed per the manufacturer’s recommendations.
The certified installer is responsible for contacting the inspector for inspection. Prior to application of the membrane, a notice
period for inspection should be agreed upon between the applicator and inspector.
Nitra-Seal Specification V 2.1

C. The measurement tools listed below will help verity the thickness of the Nitra-Core layer. As measurement verification
experience is gained, these tools will help confirm thickness measurements that can be obtained by pressing one’s fingers
into the Nitra-Core membrane.

To verify the mil thickness of the Nita-Core, the following measurement devices are required.

1. Mil reading caliper: Calipers are used to measure the thickness of coupon samples. To measure coupon samples
correctly, the thickness of the Nitra-Base layers (18 mils each) must be taken into account. Mark sample area for
repair.

2. Wet mil thickness gauge: A wet mil thickness gauge may be used to quickly measure the mil thickness of the Nitra-
Core layer. The thickness of the Nitra-Base sheet layers do not factor into the mil thickness reading.

NOTE: When first using a wet mil thickness gauge on a project, collect coupon samples to verify the wet mil gauge
thickness readings.

3. Needle nose digital depth gauge: A needle nose depth gauge should be used when measuring the Nitra-Core
thickness on vertical walls or in field measurements. Mark measurement area for repair.

To obtain a proper wet mil thickness reading, take into account the 20 to 30 percent shrinkage that will occur as the membrane
fully cures. Not taking into account the thickness of the sheet layers, a freshly sprayed membrane should have a minimum
wet thickness of 50-57 mils.

Methods on how to properly conduct Nitra-Core thickness sampling can be obtained by reviewing literature prepared by Land
Science.

D. It should be noted that taking too many destructive samples can be detrimental to the membrane. Areas where coupon
samples have been removed need to be marked for repair.

E. Smoke Testing is highly recommended and is the ideal way to test the seal created around penetrations and terminations.
Smoke Testing is conducted by pumping non-toxic smoke underneath the Nitra-Seal vapor intrusion barrier and then
repairing the areas where smoke appears. Refer to smoke testing protocol provided by Land Science. For projects that will
require a material or labor material warranty, Land Science will require a smoke test.

F. Visual inspections prior to placement of concrete, but after the installation of concrete reinforcing, is recommended to identify
any punctures that may have occurred during the installation of rebar, post tension cables, etc. Punctures in the Nitra-Seal
system should be easy to identify due to the color contrasting layers of the system.
02 56 19 © 2019 Land Science
Terra-Vent™
SOIL GAS COLLECTION SYSTEM
Version 1.1
SECTION 02 56 19 – GAS CONTROL
PART 1 – GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1
Specification Sections, apply to this Section.
1.2 SUMMARY
A. This Section includes the following:
1.Substrate preparation.
2.Terra-Vent™ installation.
3.Terra-Vent accessories.
B. Related Sections: The following Sections contain requirements that relate to this Section:
1.Division 2 Section “Earthwork”, “Pipe Materials”, “Sub-drainage systems”, ”Gas Control System”, “Fluid-Applied gas
barrier”.
2.Division 3 Section “Cast-in-Place Concrete” for concrete placement, curing, and finishing.
3.Division 5 Section “Expansion Joint Cover Assemblies”, for expansion-joint covers assemblies and installation.
1.3 PERFORMANCE REQUIREMENTS
A. General: Provide a gas venting material that collects gas vapors and directs them to discharge or to collection points as
specified in the gas vapor collection system drawings and complies with the physical requirements set forth by the
manufacturer.
1.4 SUBMITTALS
A. Submit Product Data for each type of gas venting system specified, including manufacturer’s specifications.
B. Sample – Submit representative samples of the following for approval:
1.Gas venting, Terra-Vent.
2.Terra-Vent accessories.
1.5 QUALITY ASSURANCE
A. Installer Qualifications: Engage an experienced Installer who is certified in writing and approved by vapor intrusion barrier
manufacturer Land Science for the installation of the Terra-Shield and Nitra-Seal vapor intrusion barrier system.
B. Manufacturer Qualification: Obtain gas venting, vapor intrusion barrier and system components from a single
manufacturer Land Science.
C. Pre-installation Conference: A pre-installation conference shall be held prior to installation of the venting system, vapor
intrusion barrier and waterproofing system to assure proper site and installation conditions, to include contractor,
applicator, architect/engineer and special inspector (if any).
1.6 DELIVERY, STORAGE, AND HANDLING
A. Deliver materials to project site as specified by manufacturer labeled with manufacturer’s name, product brand name and
type, date of manufacture, shelf life, and directions for handling.
02 56 19 © 2019 Land Science
B. Store materials as specified by the manufacturer in a clean, dry, protected location and within the temperature range
required by manufacturer. Protect stored materials from direct sunlight.
C. Remove and replace material that is damaged.
PART 2 – PRODUCTS
2.1 MANUFACTURER
A. Land Science, San Clemente, CA. [phone]
1.Terra-Vent™
2.2 GAS VENT MATERIALS
A. Terra-Vent – Terra-Vent is a low profile, trenchless, flexible, sub slab vapor collection system used in lieu or in
conjunction with perforated piping. Terra-Vent is recommended for sites with methane gas and aggressive
chlorinated volatile organic or petroleum vapors. Manufactured by Land Science.
B. Terra-Vent physical properties
PROPERTIES TEST METHOD Terra Vent

Vent Core Properties
Compressive Strength ASTM D-1621 9,500 psf.
Thickness 1 inch
Flow Rate (Hydraulic gradient = 0.1) ASTM D-4716 30 gpm/ft width
Vent Fabric Properties
Grab Tensile Strength

ASTM D-4632

100 lbs.
CBR Puncture ASTM D-6241 250 lbs.
Flow ASTM D-4491 140 gpm/ft2
AOS ASTM D-4751 70 U.S Sieve
Permittivity ASTM D-4491 2.0 sec-1
U.V Resistance ASTM D-4355 70% @500 hrs.
Packaging: Dimension: 12”x 165’
Weight: 68 lbs.
2.3 AUXILIARY MATERIALS
A. Terra-Vent End Out
B. Reinforced Tape.
PART 3 – EXECUTION
3.1 EXAMINATION
A. Examine substrates, areas, and conditions under which gas vent system will be installed, with installer present, for
compliance with requirements. Do not proceed with installation until unsatisfactory conditions have been corrected.
3.2 SUBSTRATE PREPARATION
A. Verify substrate is prepared according to project requirements.
02 56 19 © 2019 Land Science
3.3 PREPARATION FOR STRIP COMPOSITE
A. Mark the layout of strip geocomposite per layout design developed by engineer.
3.4 STRIP GEOCOMPOSITE INSTALLATION
A. Install Terra-Vent over substrate material where designated on drawings with the flat base of the core placed up and
shall be overlapped in accordance with manufacturer’s recommendations.
B. At areas where Terra-Vent strips intersect cut and fold back fabric to expose the dimpled core. Arrange the strips so
that the top strip interconnects into the bottom strip. Unfold fabric to cover the core and use reinforcing tape, as
approved by the manufacturer, to seal the connection to prevent sand or gravel from entering the core.
C. When crossing Terra-Vent over footings or grade beams, consult with the specifying environmental engineer and
structural engineer for appropriate use and placement of solid pipe materials. Place solid pipe over or through
concrete surface and attach a Terra-Vent End Out at both ends of the pipe before connecting the Terra-Vent to the pipe
reducer. Seal the Terra-Vent to the Terra-Vent End Out using fabric reinforcement tape. Refer to Terra-Vent detail
provided by Land Science.
D. Place vent risers per specifying engineer’s project specifications. Connect Terra-Vent to Terra-Vent End Out and seal
with fabric reinforced tape. Use Terra-Vent End Out with the specified diameter piping as shown on system drawings.
3.5 PLACEMENT OF OVERLYING AND ADJACENT MATERIALS
A. All overlying and adjacent material shall be placed or installed using approved procedures and guidelines to prevent
damage to the strip geocomposite.
B. Equipment shall not be directly driven over and stakes or any other materials may not be driven through the strip
geocomposite.
PRODUCT DATA SHEET
Land Science / 1011 Calle Sombra / Suite 110 / San Clemente / CA / 92673
Ph. 949-366-8000 / F. 949- 366-8090 / www.landsciencetech.com
Land Science Bond
Land Science Bond is comprised of a gray high strength HDPE membrane that is thermally bonded to a polypropylene
geotextile. Land Science Bond layer is installed as a protection course over the Nitra-Base and Nitra-Core layers with
the geotextile side facing up. The Land Science Bond layer also provide an excellent substrate and friction surface for
concrete to adhere to.
PROPERTIES TEST METHOD LAND SCIENCE BOND
Film Thickness 18 mil
Color Gray HDPE - White Geotextile
Weight ASTM D751 – 06 6.8 oz/yd2
Tensile Strength (grab) ASTM D751 – 06 CD – 186.8 lbf.
MD – 153.4 lbf.
Tear Strength (Trapezoidal) ASTM D751 – 06 CD – 36.7 lbf.
MD – 28.0 lbf
Puncture Resistance ASTM D4833-07 61.2 lbf.
Life Expectancy ASTM E 154-93 Indefinite
Elongation ASTM D751 – 06 CD – 72.1%
MD – 49.6%
Chemical Resistance Excellent
Packaging: 102” x 150’ Roll
PRODUCT DATA SHEET
Land Science / 1011 Calle Sombra / Suite 110 / San Clemente / CA / 92673
Ph. 949-366-8000 / F. 949- 366-8090 / www.landsciencetech.com
Nitra-Core
Nitra-Core is a patent pending elastic water-based co-polymer modified asphaltic, nitrile latex and other proprietary
compounds spray applied vapor barrier. This chemical resistant barrier typically installed at 40 mils thickness uniformly
above Nitra-Base layer to provide a monolithic and seamless system. Nitra-Core has exceptional bonding to a wide
variety of substrates including green concrete. This barrier will build up to a specific thickness in a single application
through multiple passes allowing it for easy installation around penetrations, uneven surfaces and oddly shaped areas.
PROPERTIES TEST METHOD Nitra-Core
Application to TerraBase 40 mils (23 ft2/gal)
Typical Uncured Properties
Specific Gravity ASTM D 244 1.0
Brookfield Viscosity ASTM D2196 75 – 90 centipoises
pH Oakton 10 – 13
Residue Content ASTM D2939 62 – 65%
Color Brown to Black
Demulsibility ASTM D6936 35 – 40%
Non-Toxic No Solvent
Shelf Life 6 months
Typical Cured Properties with
Nitra-Base & Land Science Bond
PCE Diffusion Coefficient GeoKinetics Laboratory 9.1 x 10-12 m2/day
Benzene Diffusion Coefficient GeoKinetics Laboratory 4.9 x 10-13 m2/day
Packaging: 55 gal. drums and 275 gal. totes
PRODUCT DATA SHEET
Land Science / 1011 Calle Sombra / Suite 110 / San Clemente / CA / 92673
Ph. 949-366-8000 / F. 949- 366-8090 / www.landsciencetech.com
Nitra-Base
Nitra-Base is comprised of a high strength HDPE membrane that is thermally bonded to a polypropylene geotextile.
Nitra-Base layer is installed as a base layer prior to Nitra-Core spray application with the HDPE side facing up.
PROPERTIES TEST METHOD NITRA-BASE
Film Thickness 23 mil
Color HDPE/Geotextile (white)
Weight ASTM D751 – 06 6.8 oz/yd2
Tensile Strength (grab) ASTM D751 – 06 CD – 270.5 lbf.
MD – 350.9 lbf.
Tear Strength (Trapezoidal) ASTM D751 – 06 CD – 48.3 lbf.
MD – 44.4 lbf
Puncture Resistance ASTM D4833-07 98.6 lbf.
Life Expectancy ASTM E 154-93 Indefinite
Elongation ASTM D751 – 06 CD – 26.0%
MD – 32.6%
Chemical Resistance Excellent
Packaging: 102” x 150’
PRODUCT DATA SHEET
Land Science / 1011 Calle Sombra / Suite 110 / San Clemente / CA / 92673
Ph. 949-366-8000 / F. 949- 366-8090 / www.landsciencetech.com
TerraVent
Terra Vent is a low profile, trenchless, flexible, sub slab vapor collection system used in lieu of perforated piping. It
consists of a heavy duty 3-dimensional, high flow, polypropylene dimpled core. The core is then wrapped and bonded
with a non-woven geotextile to prevent soil, sand or gravel pass into the dimple core. Terra Vent core is made from
100% Post-Industrial/Pre-Consumer polypropylene regrind material.
PROPERTIES TEST METHOD TerraVent
Vent Core Properties
Compressive Strength ASTM D-1621 9,500 psf.
Thickness 1 inch
Flow Rate - Hydraulic gradient - 0.1 ASTM D-4716 30 gpm/ft width
Vent Fabric Properties
Grab Tensile Strength ASTM D-4632 100 lbs.
CBR Puncture ASTM D-6241 250 lbs.
Flow ASTM D-4491 140 gpm/ft2
AOS ASTM D-4751 70 U.S Sieve
Permittivity ASTM D-4491 2.0 sec-1
U.V Resistance ASTM D-4355 70% @500 hrs.
Packaging: Dimension: 12”x 165’
Weight: 68 lbs.
TerraShield Core or MonoShield Core
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SDS US
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1. Identification
Product identifier
Other means of identification
Recommended use
Recommended restrictions
SAFETY DATA SHEET
Nitra-Core
None.
Spray-applied asphalt for vapor barrier systems.
None known.
Manufacturer/Importer/Supplier/Distributor information
Company Name
Address
General information
E-mail
Land Science, a Division of Regenesis
1011 Calle Sombra
San Clemente, CA 92673 USA
949-366-8000
[e-mail]
Emergency phone number
USA, Canada, Mexico
International
2.Hazard(s) identification
Physical hazards
For Hazardous Materials Incidents ONLY (spill, leak, fire, exposure or accident), call
CHEMTREC 24/7 at:
1-800-424-9300
1-703-527-3887
Not classified.
Health hazards
OSHA defined hazards
Label elements
Sensitization, skin
Not classified.
Category 1
Signal word Warning
Hazard statement May cause an allergic skin reaction.
Precautionary statement
Prevention Avoid breathing mist/vapors. Contaminated work clothing must not be allowed out of the
workplace. Wear protective gloves.
Response If on skin: Wash with plenty of water. If skin irritation or rash occurs: Get medical advice/attention.
Wash contaminated clothing before reuse.
Storage Store away from incompatible materials.
Disposal Dispose of contents/container in accordance with local/regional/national/international regulations.
Hazard(s) not otherwise
classified (HNOC)
None known.
Supplemental information None.
3.Composition/information on ingredients
Mixtures
Chemical name
Asphalt
CAS number %
8052-42-4 50 - 70
Water 7732-18-5 30 - 40
Acrylonitrile-based polymer - < 15
Emulsifier - < 1
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SDS US
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Ammonium hydroxide 1336-21-6 < 0.2
Composition comments
4. First-aid measures
Inhalation
Skin contact
Eye contact
Ingestion
Most important
symptoms/effects, acute and
delayed
Indication of immediate
medical attention and special
treatment needed
General information
5. Fire-fighting measures
Suitable extinguishing media
Unsuitable extinguishing
media
Specific hazards arising from
the chemical
Special protective equipment
and precautions for firefighters
Fire fighting
equipment/instructions
Specific methods
General fire hazards
All concentrations are in percent by weight unless otherwise indicated.
Components not listed are either non-hazardous or are below reportable limits.
Chemical ingredient identity and/or concentration information withheld for some or all components
present is confidential business information (trade secret), and is being withheld as permitted by
29 CFR 1910.1200(i).
Move to fresh air. Call a physician if symptoms develop or persist.
Remove contaminated clothing immediately and wash skin with soap and water. In case of
eczema or other skin disorders: Seek medical attention and take along these instructions.
Rinse with water. Get medical attention if irritation develops and persists.
Rinse mouth. Get medical attention if symptoms occur.
May cause an allergic skin reaction. Dermatitis. Rash.
Provide general supportive measures and treat symptomatically. Keep victim under observation.
Symptoms may be delayed.
Ensure that medical personnel are aware of the material(s) involved, and take precautions to
protect themselves. Show this safety data sheet to the doctor in attendance. Wash contaminated
clothing before reuse.
Foam. Dry powder. Carbon dioxide (CO2).
Do not use water jet as an extinguisher, as this will spread the fire.
During fire, gases hazardous to health may be formed. Combustion products may include: carbon
oxides, nitrogen oxides.
Self-contained breathing apparatus and full protective clothing must be worn in case of fire.
Move containers from fire area if you can do so without risk.
Use standard firefighting procedures and consider the hazards of other involved materials.
Material will burn in a fire.
6. Accidental release measures
Personal precautions,
protective equipment and
emergency procedures
Methods and materials for
containment and cleaning up
Environmental precautions
7. Handling and storage
Precautions for safe handling
Conditions for safe storage,
including any incompatibilities
Keep unnecessary personnel away. Keep people away from and upwind of spill/leak. Wear
appropriate protective equipment and clothing during clean-up. Avoid breathing mist/vapors. Do
not touch damaged containers or spilled material unless wearing appropriate protective clothing.
Ensure adequate ventilation. Local authorities should be advised if significant spillages cannot be
contained. For personal protection, see section 8 of the SDS.
Large Spills: Stop the flow of material, if this is without risk. Dike the spilled material, where this is
possible. Absorb in vermiculite, dry sand or earth and place into containers. Following product
recovery, flush area with water.
Small Spills: Wipe up with absorbent material (e.g. cloth, fleece). Clean surface thoroughly to
remove residual contamination.
Never return spills to original containers for re-use. For waste disposal, see section 13 of the SDS.
Avoid discharge into drains, water courses or onto the ground.
Avoid breathing mist/vapors. Avoid contact with eyes, skin, and clothing. Avoid prolonged
exposure. Provide adequate ventilation. Wear appropriate personal protective equipment. Observe
good industrial hygiene practices.
Store in tightly closed container. Store away from incompatible materials (see Section 10 of the
SDS). Protect from freezing.
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8. Exposure controls/personal protection
Occupational exposure limits
US. OSHA Table Z-1 Limits for Air Contaminants (29 CFR 1910.1000)
Components Type

Value
Ammonium hydroxide (CAS
1336-21-6)
PEL 35 mg/m3

50 ppm

US. ACGIH Threshold Limit Values
Components Type

Value

Form
Ammonium hydroxide (CAS
1336-21-6)

Asphalt (CAS 8052-42-4)
STEL 35 ppm

TWA 25 ppm
TWA 0.5 mg/m3 Inhalable fume.

US. NIOSH: Pocket Guide to Chemical Hazards
Components Type

Value

Form
Ammonium hydroxide (CAS
1336-21-6)

Asphalt (CAS 8052-42-4)
Biological limit values
Appropriate engineering
controls
STEL 27 mg/m3

35 ppm
TWA 18 mg/m3
25 ppm
Ceiling 5 mg/m3 Fume.
No biological exposure limits noted for the ingredient(s).
Good general ventilation should be used. Ventilation rates should be matched to conditions. If
applicable, use process enclosures, local exhaust ventilation, or other engineering controls to
maintain airborne levels below recommended exposure limits. If exposure limits have not been
established, maintain airborne levels to an acceptable level.
Individual protection measures, such as personal protective equipment
Eye/face protection
Skin protection
Hand protection

Skin protection
Other
Respiratory protection

Thermal hazards
General hygiene
considerations
Wear approved chemical safety goggles. Risk of splashes: Face shield is recommended.

Wear appropriate chemical resistant gloves. Suitable gloves can be recommended by the glove
supplier.

Wear appropriate chemical resistant clothing. Use of an impervious apron is recommended.
When workers are facing concentrations above the exposure limit they must use appropriate
certified respirators. Wear NIOSH approved respirator appropriate for airborne exposure at the
point of use. Appropriate respirator selection should be made by a qualified professional.
Wear appropriate thermal protective clothing, when necessary.
Always observe good personal hygiene measures, such as washing after handling the material
and before eating, drinking, and/or smoking. Routinely wash work clothing and protective
equipment to remove contaminants. Contaminated work clothing should not be allowed out of the
workplace.
9. Physical and chemical properties
Appearance
Physical state
Form
Color
Odor

Liquid.
Liquid.
Black or dark brown.
Not available.
Odor threshold Not available.
pH 8 - 10
Melting point/freezing point 32 °F (0 °C)
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Initial boiling point and boiling
range
212 °F (100 °C)
Flash point Not available.
Evaporation rate Not available.
Flammability (solid, gas) Not applicable.
Upper/lower flammability or explosive limits
Flammability limit - lower
(%)
Flammability limit - upper
(%)
Not available.
Not available.
Vapor pressure Not available.
Vapor density Not available.
Relative density Not available.
Solubility(ies)
Solubility (water) Not available.
Partition coefficient
(n-octanol/water)
Not available.
Auto-ignition temperature Not available.
Decomposition temperature Not available.
Viscosity < 2000 cP (140 °F (60 °C))
Other information
Explosive properties
Oxidizing properties
10.Stability and reactivity
Reactivity
Chemical stability
Possibility of hazardous
reactions
Conditions to avoid
Incompatible materials
Hazardous decomposition
products
Not explosive.
Not oxidizing.
The product is stable and non-reactive under normal conditions of use, storage and transport.
Material is stable under normal conditions.
No dangerous reaction known under conditions of normal use.
Contact with incompatible materials. Excessive heat or cold.
Strong oxidizing agents.
No hazardous decomposition products are known.
11.Toxicological information
Information on likely routes of exposure
Inhalation Prolonged or repeated inhalation may cause respiratory tract irritation.
Skin contact May cause an allergic skin reaction.
Eye contact Direct contact with eyes may cause temporary irritation.
Ingestion May cause discomfort if swallowed.
Symptoms related to the
physical, chemical and
toxicological characteristics
May cause an allergic skin reaction. Dermatitis. Rash.
Information on toxicological effects
Acute toxicity Not expected to be acutely toxic.
Components Species
Ammonium hydroxide (CAS 1336-21-6)
Acute
Oral
Test Results
LD50 Rat 350 mg/kg
Skin corrosion/irritation
Serious eye damage/eye
irritation
Prolonged skin contact may cause temporary irritation.
Direct contact with eyes may cause temporary irritation.
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Respiratory or skin sensitization
Respiratory sensitization Not a respiratory sensitizer.
Skin sensitization
Germ cell mutagenicity
May cause an allergic skin reaction.
No data available to indicate product or any components present at greater than 0.1% are
mutagenic or genotoxic.
Carcinogenicity Not classifiable as to carcinogenicity to humans.
IARC has listed Straight-Run Bitumens (including CAS 8052-42-4) as Group 2B during road
paving due to PAH release upon heating to a high temperature.
IARC Monographs. Overall Evaluation of Carcinogenicity
Asphalt (CAS 8052-42-4) 2B Possibly carcinogenic to humans.
NTP Report on Carcinogens
Not listed.
OSHA Specifically Regulated Substances (29 CFR 1910.1001-1053)
Not listed.
Reproductive toxicity
Specific target organ toxicity -
single exposure
Specific target organ toxicity -
repeated exposure
This product is not expected to cause reproductive or developmental effects.
Not classified.
Not classified.
Aspiration hazard Not an aspiration hazard.
12.Ecological information
Ecotoxicity The product is not classified as environmentally hazardous. However, this does not exclude the
possibility that large or frequent spills can have a harmful or damaging effect on the environment.
Components
Ammonium hydroxide (CAS 1336-21-6)
Aquatic
Species Test Results
Algae
Acute
Crustacea
Fish
Chronic
Crustacea
Fish
EC50
LC50
LC50
LOAEL
NOEC
Chlorella vulgaris
Daphnia magna
Fathead minnow (Pimephales promelas)
Daphnia magna
Ictalurus punctatus
2700 mg/l, 18 days
101 mg/l, 48 hours (NH3)
0.75 - 3.4, 96 hours (NH3)
1.3 mg/l, 21 days (NH3)
< 48 µg/l, 31 days (NH3)
Persistence and degradability
Bioaccumulative potential
Mobility in soil
No data is available on the degradability of this product.
No data available.
No data available.
Other adverse effects None known.
13.Disposal considerations
Disposal instructions
Local disposal regulations
Hazardous waste code
Waste from residues / unused
products
Contaminated packaging
14.Transport information
DOT
Collect and reclaim or dispose in sealed containers at licensed waste disposal site. Incinerate the
material under controlled conditions in an approved incinerator. Dispose of contents/container in
accordance with local/regional/national/international regulations.
Dispose in accordance with all applicable regulations.
The waste code should be assigned in discussion between the user, the producer and the waste
disposal company.
Dispose of in accordance with local regulations. Empty containers or liners may retain some
product residues. This material and its container must be disposed of in a safe manner (see:
Disposal instructions).
Since emptied containers may retain product residue, follow label warnings even after container is
emptied. Empty containers should be taken to an approved waste handling site for recycling or
disposal.
Not regulated as dangerous goods.
TerraShield Core or MonoShield Core
949353 Version #: 01 Revision date: - Issue date: 21-May-2019
SDS US
6 / 7
IATA
Not regulated as dangerous goods.
IMDG
Not regulated as dangerous goods.
Transport in bulk according to
Annex II of MARPOL 73/78 and
the IBC Code
15. Regulatory information
US federal regulations
Not established.
This product is a "Hazardous Chemical" as defined by the OSHA Hazard Communication
Standard, 29 CFR 1910.1200.
TSCA Section 12(b) Export Notification (40 CFR 707, Subpt. D)
Not regulated.
CERCLA Hazardous Substance List (40 CFR 302.4)
Ammonium hydroxide (CAS 1336-21-6) Listed.
Asphalt (CAS 8052-42-4) Listed.
SARA 304 Emergency release notification
Not regulated.
OSHA Specifically Regulated Substances (29 CFR 1910.1001-1053)
Not listed.
Toxic Substances Control Act (TSCA) All components of the mixture on the TSCA 8(b) inventory are designated
“active”.
Superfund Amendments and Reauthorization Act of 1986 (SARA)
SARA 302 Extremely hazardous substance
Not listed.
SARA 311/312 Hazardous
chemical
Classified hazard
categories
SARA 313 (TRI reporting)
Not regulated.
Yes
Respiratory or skin sensitization
Other federal regulations
Clean Air Act (CAA) Section 112 Hazardous Air Pollutants (HAPs) List
Not regulated.
Clean Air Act (CAA) Section 112(r) Accidental Release Prevention (40 CFR 68.130)
Not regulated.
Safe Drinking Water Act
(SDWA)
US state regulations
Not regulated.
US. Massachusetts RTK - Substance List
Ammonium hydroxide (CAS 1336-21-6)
Asphalt (CAS 8052-42-4)
US. New Jersey Worker and Community Right-to-Know Act
Ammonium hydroxide (CAS 1336-21-6)
Asphalt (CAS 8052-42-4)
US. Pennsylvania Worker and Community Right-to-Know Law
Ammonium hydroxide (CAS 1336-21-6)
Asphalt (CAS 8052-42-4)
US. Rhode Island RTK
Asphalt (CAS 8052-42-4)
California Proposition 65
WARNING: This product can expose you to Asphalt, which is known to the State of California to cause cancer.
For more information go to www.P65Warnings.ca.gov.
TerraShield Core or MonoShield Core
949353 Version #: 01 Revision date: - Issue date: 21-May-2019
SDS US
7 / 7
California Proposition 65 - CRT: Listed date/Carcinogenic substance
Asphalt (CAS 8052-42-4) Listed: January 1, 1990
US. California. Candidate Chemicals List. Safer Consumer Products Regulations (Cal. Code Regs, tit. 22, 69502.3,
subd. (a))
Asphalt (CAS 8052-42-4)
International Inventories
Country(s) or region Inventory name On inventory (yes/no)*
Australia
Canada
Canada
China
Australian Inventory of Chemical Substances (AICS) Yes
Domestic Substances List (DSL) Yes
Non-Domestic Substances List (NDSL) No
Inventory of Existing Chemical Substances in China (IECSC) Yes
Europe European Inventory of Existing Commercial Chemical No
Substances (EINECS)
Europe
Japan
Korea
New Zealand
European List of Notified Chemical Substances (ELINCS) No
Inventory of Existing and New Chemical Substances (ENCS) Yes
Existing Chemicals List (ECL) Yes
New Zealand Inventory Yes
Philippines Philippine Inventory of Chemicals and Chemical Substances
(PICCS)
Yes
Taiwan
United States & Puerto Rico
Taiwan Chemical Substance Inventory (TCSI) Yes
Toxic Substances Control Act (TSCA) Inventory Yes
*A "Yes" indicates this product complies with the inventory requirements administered by the governing country(s).
A "No" indicates that one or more components of the product are not listed or exempt from listing on the inventory administered by the governing
country(s).
16. Other information, including date of preparation or last revision
Issue date
Revision date
21-May-2019
-
Version # 01
HMIS® ratings
NFPA ratings
Health: 2
Flammability: 1
Physical hazard: 0
Disclaimer Land Science, a Division of Regenesis cannot anticipate all conditions under which this
information and its product, or the products of other manufacturers in combination with its product,
may be used. It is the user’s responsibility to ensure safe conditions for handling, storage and
disposal of the product, and to assume liability for loss, injury, damage or expense due to improper
use. The information in the sheet was written based on the best knowledge and experience
currently available.
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©2020 All rights reserved. REGENESIS, Land Science and Nitra-Seal are registered trademarks and Nitra-Core, Nitra-Base are trademarks of REGENESIS Bioremediation Products Inc.

Facilities | Environmental | Geotechnical | Materials D-2

Appendix D
Soil Vapor Sampling Set Up

Soil Vapor Sampling Guide
Sample Manifold Configuration
A. Deadhead/Shut-In Test B. Helium Tracer Test
1.Connect manifold to sample can 1.Connect to soil vapor point and place shroud over.
2. Make sure fittings and caps are tight, then use hand pump
to generate vacuum >15 in Hg. Watch gauges.
2.
3.
4.Record He concentration in shroud and in tedlar bag.
Holds vacuum?
Legend
backflow preventer
flow controller
cap
/ summa canister shut-off valve (closed/open)
/ sampling train shut-off valve (closed/open)Helium concentration in tubing >10% of shroud (i.e. >15,000 ppm =1.5%)?
pressure gauge no -> proceed to sampling
yes -> leak test failed - tighten connection to sample & try again
C. Sample Collection
1. Close sampling train shut-off valve
2.
3.Shut off can when vacuum at approx. -5 in Hg.
4.
Enrich shroud with ~15% helium (He). Record He concentration
and begin purging with syringe or hand pump
Purge a total of three volumes. At end of each volume, purge
into tedlar bag. Record He concentration in shroud.
Open sample can and note time and vacuum at start. Note
vacuum at regular intervals -
Do not let vacuum go to zero
Sampling is complete. Remove and cap sample can.
Abandon & patch sampling point (if temporary).
yes -> proceed to helium tracer test
no -> tighten fittings and try again
nut and ferrule (Swagelok or equivalent)
C
N
open
Reads pressure at
sample point
Reads pressure in
sample can
Shut-off valve allows isolation during sampling
(prevents cross-contamination from ambient and purged air)
N N
sample
can
FC
C N
sample can
FC
N N
sample can
FC
Check He
in tedlar
after each
purge vol
N N
sample can
FC
~15% Helium
Record He
in shroud at
start and end
of each purge
open valve
C N
sample
can
FC
FC
(1) closevalve
Male Fitting
(to purge device)
Female Fitting
(to sample can)
Flow Controller
Male Fitting
(to sample point)
(2) open to initiate
sampling
3-way
valve
syringe