12018 Hondros Property VIMS Addendum Design-Approval 2018

December 27, 2018 Sent Via E-mail
Christopher D. Orrell ECS Southeast LLP 1812 Center Park Drive, Suite D Charlotte, NC 28217
Subject: Vapor Mitigation System Addendum Approval Hondros Brownfields Property (aka Granite Point) Charlotte, Mecklenburg County Brownfields Project No. 12018-08-060

Dear Mr. Orrell, The Department of Environmental Quality (DEQ) Brownfields Program received the Vapor Mitigation System Addendum dated December 21, 2018 for the above referenced Brownfields
Property. This addendum is for the March 6, 2018 Vapor Mitigation Design reviewed and
approved by DEQ on March 7, 2018. DEQ Brownfields has reviewed and approves the December 21, 2018 Addendum changing the barrier material from Liquid Boot to Geo Seal. Please be advised that this approval from DEQ Brownfields does not waive any applicable
requirement to obtain any necessary permits, licenses or certifications which may be required from
other state or local entities. If you have questions about this correspondence or require additional information, please feel free to contact me by phone at 704-661-0330 or by email at [e-mail].
Sincerely,

Carolyn Minnich
Carolyn Minnich Brownfields Project Manager
ec: Mike Byron, [e-mail]
Matthew H. McDuffie, P.G. [e-mail] Joselyn Harriger, [e-mail]

VAPOR MITIGATION SYSTEM ADDENDUM
HONDROS BROWNFIELDS PROPERTY
9101 & 9111 NATIONS FORD ROAD
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA
BROWNFIELDS PROJECT NUMBER 12018-08-60

ECS SOUTHEAST, LLP
PROJECT 49: 5825

PREPARED FOR:
Signature Construction, LLC
December 21, 2018
Vapor Mitigation System Addendum
Charlotte, Mecklenburg County, North Carolina
Brownfields Project Number 12018-08-60
ECS Project No. 49-5825
December 21, 2018

TABLE OF CONTENTS
1.0 PROJECT INFORMATION ................................................................................................. 1
2.0 VAPOR MITIGATION SYSTEM .......................................................................................... 1
3.0 PERFORMANCE MONITORING ........................................................................................ 3

APPENDIX Appendix A Vapor Mitigation Design Sheets Appendix B Liquid Boot Technical Data Sheets Appendix C Liquid Boot Manufacturer’s Specifications Appendix D Geo-Seal Vapor Barrier Specifications Appendix E Geo-Seal Warranty Information
Vapor Mitigation System Addendum
Charlotte, Mecklenburg County, North Carolina
Brownfields Project Number 12018-08-60
ECS Project No. 49-5825
December 21, 2018

1
1.0 PROJECT INFORMATION The Hondros Property site located at 9101 & 9111 Nations Ford Road, Mecklenburg County,
North Carolina consists of an approximate 16.39 acre tract of land. Previous investigations by ECS Southeast, LLP and others identified the presence tetrachloroethene (PCE) and other volatile organic compounds (VOCs) in onsite soil vapor and groundwater. Based on these
findings, the subject property was accepted into the North Carolina Department of Environmental Quality (NCDEQ) Brownfields Program, and a Brownfields Agreement (Brownfields Project Number 12018-08-60) was executed between NCDEQ and Arrowood Nations Ford Property, LLC in February 2010. The planned redevelopment of the subject property includes construction of a multi-family residential development. Based on the results of the 2007 groundwater assessments that identified the presence of VOCs above the standards set forth in Title 15A of the North Carolina Administrative Code, Subchapter 2L, Rule .0202. and the results of the 2009 soil vapor sampling that identified the presence of VOCs above the standards derived using the Guidelines of Inactive Hazardous Sites Branch of DENR’s Superfund Section, a properly
designed and installed vapor mitigation system appears to be necessary for the planned multi-family residential development. 2.0 VAPOR MITIGATION SYSTEM Based on the structural design of Type A-buildings, Type-B buildings, and a clubhouse, a Vapor
Mitigation Plan (VMP) has been developed for the site. The VMP is discussed in detail below and the Vapor Mitigation Design is provided as Appendix A. This addendum is to address the change in the materials used from Liquid Boot to Geo-Seal. 2.1 Vapor Mitigation Design The Vapor Mitigation Design includes a combination of a vapor barrier using Liquid Boot and a passive sub-slab venting system embedded in a gas permeable aggregate layer. The proposed addendum to the design includes the usage of Geo-Seal as opposed to Liquid Boot. Based on the building design details, the building will be slab on grade construction. As such, it is anticipated that a vapor barrier will be installed above the minimum 6-inch gas permeable
aggregate layer immediately below the slab. In addition, a passive sub-slab venting system will be installed that will be comprised of a GeoVent low-profile venting system, and PVC vent riser piping terminating with a 6” wind-driven turbine ventilator.
Vapor Barrier
A vapor barrier system consisting of 60-mil (dry thickness) spray applied polymer modified asphaltic emulsion (Geo-Seal CORE spray layer and Geo-Seal CORE Detail) applied to a 18-mil Geo-Seal BASE course and Geo-Seal BOND layer with a non-woven geotextile protection layer. The Geo-Seal spray applied membrane provides a 60-mil layer of protection, is water-based and non-toxic, provides a monolithic membrane free of seams, and can be easily applied to complex shapes and penetrations.
Vapor Mitigation System Addendum
Charlotte, Mecklenburg County, North Carolina
Brownfields Project Number 12018-08-60
ECS Project No. 49-5825
December 21, 2018

2
The vapor barrier consists of a three part system; 1) a dual purpose base layer comprised of Geo-Seal BASE course and Geo-Seal BOND layer geomembrane which is placed directly on the gas permeable aggregate sub-base, provides a uniform substrate for the Geo-Seal vapor
barrier to be spray applied and also serves as a gas vapor barrier, 2) a 60-mil (dry thickness) spray applied polymer (Geo-Seal) installed to serve as the gas barrier, and 3) a top layer (Geo-Seal BOND protection layer) which is installed directly over the Geo-Seal and serves as a
protection course for the vapor barrier system. The vapor barrier will be sealed at the seams, footings and penetrations with the Geo-Seal spray applied membrane. It is recommended that the vapor barrier be installed in accordance with the manufacturer’s specifications (Appendix D). Following the installation of the vapor barrier, a smoke test, using non-toxic smoke underneath the vapor barrier, will be conducted to confirm a vapor-tight installation and show areas that may need to be repaired. Thickness tests will also be conducted in conjunction with the smoke test. It is anticipated that thickness testing will include physically cutting a small perforation through the vapor barrier at multiple locations and measuring the thickness to ensure it has been correctly applied across the targeted area. Inspections of the vapor barrier will be conducted by a qualified project professional, under the supervision of a North Carolina P.E., after the gravel/piping has been installed and before pouring the concrete slab. Under no circumstances
will any portion of the system be covered without inspection, and NCDEQ will be provided 48-hour notice prior to scheduling inspection activities. Inspections will include a field log detailing observations of the barrier installation and sealing at the seams, footings, and penetrations,
observations from the smoke testing and documentation of repairs, as needed, and a photographic log. The inspections records will be submitted to the NCDEQ as part of a VMP report.
Passive Sub-Slab Venting System The passive sub-slab venting system recommended for use includes a system of GeoVent to be constructed within the gas permeable aggregate beneath the building slab prior to the installation of the vapor barrier (Design Sheet ENV110, ENV120, and ENV130). Based on the design specifications, a minimum of 6-inches of a gas permeable aggregate layer (No. 57 stone or equivalent) is recommended as the sub-base beneath the building slab into which the GeoVent would be embedded. The purpose of the GeoVent is to allow volatile organic vapors emanating from the groundwater plume to be ventilated through the PVC roof vents (Design Sheet ENV201). The recommended construction of the vent pipes is 4-inch schedule 40 PVC
terminating with a 6” wind-driven turbine ventilator (or approved alternate) installed on the discharge end of the exhaust stacks on the roof. After their construction, penetrations of the roof would be sealed to the manufacturer’s specifications.
The sub-slab venting system will also include the installation of sub-slab pressure monitoring points. Based on the design, up to 6 monitoring points are recommended for Type A-or Type-B
buildings (i.e., one per unit), and up to 3 monitoring points are recommended for the clubhouse for the purpose of measuring the differential pressure between the indoor air and sub-slab floor and evaluate the effectiveness of the mitigation system. Presser monitoring points with include, but are not limited to, areas near the horizontal piping as well as the remote extents of the system. Details of the monitoring point construction are provided on Design Sheet ENV201. In addition, air-tight gas sampling ports are designed for installation at the base of each of the vent riser that ventilate the sub-slab vapors to the roof. These vapor monitoring points will be installed for the collection of vapor samples for laboratory analysis, if needed.
Vapor Mitigation System Addendum
Charlotte, Mecklenburg County, North Carolina
Brownfields Project Number 12018-08-60
ECS Project No. 49-5825
December 21, 2018

3
It is anticipated that differential pressure measurements will be collected from each measuring point after the installation of the vapor barrier and upon completion of the building construction
as well as monthly for the first year. Based on results of the pressure monitoring, these vents may be transitioned to quarterly after the first year of operation. The measurements will be collected using a handheld manometer capable of collecting measurements to the nearest
0.001 inches of water. Additional measurements will be collected during different times of the day to evaluate potential diurnal effects caused by HVAC system operation. The goal of the vapor mitigation system is to create a minimum of 0.016 inches of water pressure differential across the slab. If differential pressure measurements as outlined above indicate that sub-slab venting is creating less than the target differential pressure across the slab (0.016 inches of water), a plan to deploy data loggers to continuously monitor differential pressure between indoor air and sub-slab will be submitted to DEQ for review and approval and/or modifying the passive sub-slab venting system into an active sub-slab venting system. 3.0 PILOT TEST AND PERFORMANCE MONITORING
3.1 Pilot Testing A pilot test will be performed of the system once the vapor barrier and passive sub-slab venting
system have been installed and the concrete slab has been poured In order to demonstrate that all areas below the slab can be effectively influenced by the piping network. Permanent pressure monitoring points will be installed throughout the piping network. The location of
pressure monitoring points will include, but are not limited to, the remote extents of the system, in areas near the horizontal piping, as well as areas of potential reduced effectiveness based on plumbing piping, as well as other utilities and/or wall layouts. Based on the results of the pilot test, and with NCDEQ approval, the final number of monitoring points may be reduced. The pilot test will consist of using a rated blower and applying a vacuum to the vertical risers and measuring the pressure differential within the permanent vapor monitoring points installed within the interior as well as the remote extents of the system. The pilot testing activities and findings will be documented and modifications will be made if the testing indicates additional monitoring points or suction points are needed to achieve influence across the targeted area. 3.2 Performance Monitoring
Following the completion of the pilot testing and prior to occupancy of the building, one indoor air sample will be collected from a representative area of each Type-A or Type-B building unit
and up to 2 indoor air samples will be collected from representative areas of the club house. Concurrently with the indoor air sampling, an exterior background ambient air sample will be collected. The samples will be collected after the building envelop is complete but before
finishing with paint, use of adhesives, tile placement, etc., which could be indoor sources of the compounds of potential concern in indoor air. In the event the HVAC system is not operational during the time of the air sampling, diligent oversight of construction crews and materials will be conducted in order to reduce cross-contamination by indoor air sources. Assessment activities will be conducted in accordance with the NCDWM Vapor Intrusion Guidance. Concurrently with the first indoor air sampling event conducted following the completion of building construction (as noted above), sub-slab vapor sampling will be conducted whereby sub-
Vapor Mitigation System Addendum
Charlotte, Mecklenburg County, North Carolina
Brownfields Project Number 12018-08-60
ECS Project No. 49-5825
December 21, 2018

4
slab soil gas samples will be collected from monitoring points. It is anticipated that these performance monitoring points will be sampled on an annual basis for up to three years to determine if increasing concentration trends are present that may result in transitioning the
system to active. At the completion of the third annual sampling event, a request to terminate the future annual sampling may be submitted to the NCDEQ should the data support this recommendation.
The indoor air and sub-slab vapor samples will be submitted to a certified laboratory for analysis for volatile organic compounds (VOCs) using EPA Method TO-15. ECS will communicate the regulatory reporting limits to the laboratory prior to analysis to ensure their reporting limits are consistent with the comparison criteria. In addition, ECS will request the laboratory report the “J” flagged detections, if present. The indoor air samples will be collected over a 24-hour period of time using a certified-clean 6-liter summa canister and flow regulator. Prior to collecting the soil vapor samples, laboratory grade helium gas will be used as a quality assurance/control measure to confirm the integrity of the probe seal. A plastic cylinder (approximately 1.75 quarts) will be placed and sealed over the sampling point and purged with
laboratory grade helium. The probe point tubing and tracer gas tubing will be placed through the cylinder wall via rubber grommets. The cylinder will be placed on a 4-inch rubber gasket and held securely to the slab with a heavy weight. During the purging stage, the cylinder will be
flooded with laboratory grade helium via the hose placed through the cylinder wall. A Model MGD-2002 Multi-Gas Leak detector or similar will be connected to the probe tube and the air stream being purged will be measured for helium. A helium concentration of less than five
percent helium will be considered acceptable. If concentrations greater than five percent helium are measured, the probe tube seal will be reseated and the leak detection process will be repeated. During the sampling process, canister vacuum will be maintained above 0” Hg, and canister vacuums will be recorded by field personnel during sample collection as well as by the laboratory prior to analysis. The analytical data will be provided to DEQ within 48 hours of receipt and validation of the data. A report of the indoor air sampling will be submitted to DEQ within 21 days of completion of the sampling. Based upon the results of the sampling, ECS will make recommendations in
accordance with the DWM Vapor Intrusion Guidance. It is anticipated that the recommendations will consist of one of the following:
Additional indoor air sampling is warranted to confirm that the VMP is effective for residential use (per the DWM VI Guidance, in the case where calculated cumulative risks are within the range of 1x10-4 and 1x10-6 for potential carcinogenic risks and below a hazard index of 1 for
potential non-carcinogenic risks). Active fans to replace goosenecks will be installed as part of the VMP and follow-up sampling will be performed after installation of the fans (per the DWM VI Guidance, in the case where calculated cumulative risks are greater than 1x10-4 for potential carcinogenic risks or above a hazard index of 1 for potential non-carcinogenic risks). In this case, mitigation system modifications and plans for additional indoor air sampling and long-term differential pressure
Vapor Mitigation System Addendum
Charlotte, Mecklenburg County, North Carolina
Brownfields Project Number 12018-08-60
ECS Project No. 49-5825
December 21, 2018

5
monitoring across the slab will be submitted to the Brownfields Program for approval prior to implementation.
Following confirmation that the mitigation system is installed, effective, and operating properly, a North Carolina Professional Engineer (PE)-certified report documenting installation of the mitigation system will be submitted to the (DEQ) Brownfields Program. Note that inspections of
the mitigation system will be performed during all phases of construction by or under supervision of the engineer certifying the report. NCDEQ will be notified a minimum of 48 hours’ notice prior to each inspection. Inspection documentation for all portions of the mitigation system installation in each area, including field logs and photographic documentation, will be included as an appendix to the installation report. The installation report will be submitted to the Brownfields Program for review and approval in order to obtain conditional occupancy determination in accordance with the standard vapor intrusion provisions of the Brownfield Agreement. In order to ensure the long-term performance and continued effectiveness of the mitigation system, a monitoring and maintenance plan will be submitted for NCDEQ review and approval.
The monitoring and maintenance plan will include pressure testing conducted in accordance with the DWM Vapor Intrusion Guidance and Brownfields Agreement using DEQ approved pressure monitoring points installed within the piping network. It is anticipated that the location
of pressure monitoring points will include, but are not limited to, the remote extents of the system, in areas near the horizontal piping, as well as areas of potential reduced effectiveness based on plumbing piping, as well as other utilities and/or wall layouts. Pressure testing will be
conducted on a monthly basis over the first year of occupancy and the results submitted to the Brownfield Project manager on a quarterly basis. With approval of the Brownfields Program, the frequency of pressure monitoring may be reduced to quarterly monitoring and the results submitted annually in conjunction with the Land Use Restriction Update (LURU). Based on the results of the first year of performance testing, continued annual monitoring may be appropriate. As part of the maintenance and monitoring program, an inspection will be conducted semiannually to determine if any new or existing areas need to be sealed, caulked, and/or covered, etc. In addition, remodeling activities, damage to the system, or if the results of pressure monitoring indicate reduced effectiveness or malfunction of the system, the brownfields project manager will be notified, the system will diagnosed and repaired, and
monitoring frequency will be modified accordingly. If required, long-term performance monitoring will include the collection of soil gas and/or indoor
air sampling. The frequency of sample collection, laboratory analysis, and reporting will be conducted in accordance with the requirements of the Brownfield Project Manager.

APPENDIX A
APPENDIX B
TECHNICAL DATATECHNICAL DATA
FORM: TDS_GEOVENT_AM_EN_201705_V2
North America: 847.851.1800 | 800.527.9948 | www.cetco.com
© 2017 Minerals Technologies Inc. IMPORTANT: The information contained herein supersedes all previous printed versions, and is believed to be accurate and reliable. For the most up-to-date information, please visit www.cetco.com. CETCO accepts no responsibility for the results obtained through application of this
product. All products are sold on the understanding that the user is solely responsible for determining their suitability for the intended use and for proper use and
disposal of the product. CETCO MAKES NO WARRANTY OF MERCHANTABILITY OR SUITABILITY FOR ANY PARTICULAR PURPOSE IN CONNECTION WITH ANY SALE
OF THE PRODUCTS DESCRIBED HEREIN. CETCO reserves the right to update information without notice.
DESCRIPTION
GEOVENT™ consists of a three-dimensional
vent core that is wrapped in a non-woven,
needle-punched filter fabric.
GEOVENT™ End Outlets are available for use
in conjunction with GEOVENT™ active/pas-
sive gas venting systems.
APPLICATIONGEOVENT™ is designed for use in the fol-lowing application:
• An active or passive venting when used
with CETCO vapor intrusion mitigation sys-
tems.
BENEFITS
• Installed directly on subgrade eliminating
trenching and potential interference or
damage to existing underground utilities
• Placed in closer proximity to the vapor in-
trusion barrier allowing for more effective
venting of any accumulated gas
• Greater opening area per lineal foot of pipe
and integral filter fabric allows for higher
ventilation efficiency
PACKAGINGGEOVENT™ is available in the following packaging option:
• 1 ft. x 165 ft. (0.3 m x 50 m) Rolls
GEOVENT™ allows for ease of installation directly on the subgrade, eliminating the need for costly and labor-intensive trenching.
GEOVENT™ allows for ease of installation
directly on the subgrade, eliminating the need
for costly and labor-intensive trenching.
UPDATED: MAY 2017
TESTING DATA
GEOVENT™
ACTIVE/PASSIVE GAS VENTING SYSTEM
PHYSICAL PROPERTIES
CORE PROPERTY TEST METHOD RESULTS
Compressive Strength ASTM D 1621 8,500 – 11,000 psf (407 – 527 kN/m²)
Thickness ASTM D 1777 1.0 in. (2.54 cm)
Flow Rate (Hydraulic gradient = .1)ASTM D 4716 30 gpm/ft width (372 lpm/m)
FABRIC PROPERTY TEST METHOD RESULTS
A.O.S.ASTM D 4751 70 US Sieve (0.212 mm)
Grab Tensile Strength ASTM D 4632 100 lbs. (0.45 kN)
CBR Puncture Strength ASTM D 6241 250 lbs. (1.11 kN)
Flow Rate ASTM D 4491 140 gpm/ft² (5,704 lpm/m²)
TECHNICAL DATA
North America: 847.851.1800 | 800.527.9948 | www.cetco.com
DESCRIPTION
VI-20™ is a 7-layer co-extruded geomembrane
made using high quality virgin-grade polyethyl-
ene and EVOH resins that provide unmatched
impact strength as well as superior resistance
to VOC vapor transmission. EVOH technol-
ogy serves as a highly resilient underslab
and vertical wall barrier designed to restrict
methane, radon and other harmful chemi-
cals. Applications for EVOH originated in the
manufacturing of automotive fuel systems to
control emissions of hydrocarbons, whose use
was mandated by the US EPA and the CA Air
Resources Board (CARB) to reduce VOC emis-
sions.
APPLICATION
VI-20™ is a 20-mil, high performance poly-
ethylene-EVOH copolymer geomembrane,
specially designed for use as a VOC barrier
when used in conjunction with Liquid Boot®
spray-applied vapor intrusion membrane to
minimize vapor intrusion and nuisance water
(non-hydrostatic conditions) migration into
buildings. VI-20™ is ideal for applications with
chlorinated solvents, BTEX and other PAHs.
BENEFITS
• Polyethylene layers provide excellent chemi-
cal resistance and physical properties
• EVOH barrier technology provides superior
protection against diffusion of chemicals
when compared to typical HDPE geomem-
branes
• Manufactured at ISO 9001:2008 certified
plant
INSTALLATION
For use as a component of the Liquid Boot®
Plus system, VI-20™ geomembrane is rolled
out on prepared sub-grade, overlapping
seams a minimum of six inches (6”). The geo-
membrane is cut around penetrations so that
it lays flat on the sub-grade and tight at all in-
side corners. A thin (20 mil) tack coat of Liquid
Boot® (“A” side without catalyst) is sprayed
within the seam overlap. Once the VI-20™ geo-
membrane is installed, penetrations are then
treated with VI-20™ Detailing Fabric prior to
installation of the Liquid Boot® spray-applied
vapor intrusion membrane and UltraShield™
G-1000 protection course.
PACKAGING
VI-20™ Geomembrane is available in the fol-
lowing packaging option:
• 10 ft. x 150 ft. (3 m x 45 m) Rolls
VI-20™ GEOMEMBRANE
HIGH-PERFORMANCE VAPOR INTRUSION BARRIER
EVOH technology provided in VI-20™
geomembrane has been shown to have VOC
diffusion coefficients 20 times lower than an
80 mil (2 mm) HDPE geomembrane.
TECHNICAL DATATECHNICAL DATA
FORM: TDS_VI-20_GEOMEMBRANE_AM_EN_201705_V2
North America: 847.851.1800 | 800.527.9948 | www.cetco.com
© 2017 Minerals Technologies Inc. IMPORTANT: The information contained herein supersedes all previous printed versions, and is believed to be accurate and reliable. For the most up-to-date information, please visit www.cetco.com. CETCO accepts no responsibility for the results obtained through application of this
product. All products are sold on the understanding that the user is solely responsible for determining their suitability for the intended use and for proper use and
disposal of the product. CETCO MAKES NO WARRANTY OF MERCHANTABILITY OR SUITABILITY FOR ANY PARTICULAR PURPOSE IN CONNECTION WITH ANY SALE
OF THE PRODUCTS DESCRIBED HEREIN. CETCO reserves the right to update information without notice.
VI-20™ CHEMICAL & PHYSICAL PROPERTIES
CHEMICAL PROPERTY TEST METHOD RESULT
Benzene Diffusion Coefficient EPA Method 8260 4.5 x 10–15 m²/s
Ethylbenzene Diffusion Coefficient EPA Method 8260 4.0 x 10–15 m²/s
m&p-Xylenes Diffusion Coefficient EPA Method 8260 3.7 x 10–15 m²/s
Methane Permeance ASTM D1434 < 1.7 x 10–10 m²/d•atm
o-Xylene Diffusion Coefficient EPA Method 8260 3.7 x 10–15 m²/s
Radon Diffusion Coefficient SP Test Method <0.25 x 10–12 m²/s
Toluene Diffusion Coefficient EPA Method 8260 4.2 x 10–15 m²/s
PHYSICAL PROPERTY TEST METHOD RESULT
Membrane Composite Thickness ASTM D5199 20 mil (0.5 mm)
Impact Resistance ASTM D1709 2,600 g
Tensile Strength ASTM E154 Section. 9 58 lbf/in (1.0 N/m)
Water Vapor Transmission ASTM E154 & E96 0.004 grains/hr-ft² (0.0028 g/hr-m²)
Water Vapor Retarder Classification ASTM E1745 Class A, B & C
UPDATED: MAY 2017
VI-20™ GEOMEMBRANE
HIGH-PERFORMANCE VAPOR INTRUSION BARRIER
NOTE:
These are typical property values.
TECHNICAL DATA
North America: 847.851.1800 | 800.527.9948 | www.cetco.com
DESCRIPTION
LIQUID BOOT® 500 is a seamless, spray-ap-
plied, water-based membrane containing no
VOCs, which provides a barrier against vapor
intrusion into structures. LIQUID BOOT® 500
sprayapplication directly to penetrations, foot-
ings, grade beams, pile caps and other irregu-
lar surfaces, provides for a fully-adhered gas
vapor barrier system.
APPLICATIONS
LIQUID BOOT® 500 is used as an underslab
gas vapor barrier, used to minimize vapor mi-
gration into buildings. LIQUID BOOT® 500 is
ideal for methane migration control.
BENEFITS
• Can be installed more economically than
LIQUID BOOT®, resulting in greater savings
• LIQUID BOOT® 500 is comprised of the
same elements as LIQUID BOOT®
• Unique formulation provides superior pro-
tection from methane gas
INSTALLATION
Protect all adjacent areas not to receive gas
vapor barrier. Ambient temperature shall be
within manufacturer’s specifi cations. All
plumbing, electrical, mechanical and structur-
al items to be under or passing through the gas
vapor barrier shall be secured in their proper
positions and appropriately protected prior
to membrane application. Gas vapor barrier
shall be installed before placement of reinforc-
ing steel. Expansion joints must be fi lled with
a conventional waterproof expansion joint ma-
terial. Surface preparation shall be per manu-
facturer’s specifi cation. A minimum thickness
of 60 dry mils, unless specifi ed otherwise.
PACKAGING
LIQUID BOOT® 500 is available in the fol-
lowing packaging options:
• 55 Gallon Drum
• 275 Gallon Tote
EQUIPMENT
• COMPRESSOR: Minimum output of 155–
185 cubic feet per minute (CFM)
• PUMPS: For “A” drum, an air-powered pis-
ton pump of 4:1 ratio (suggested model:
Graco, 4:1 Bulldog). For “B” drum, an air-
powered diaphragm pump (0–100 psi)
• HOSES: For “A” drum, ½” wire hose with a
solvent resistant core (for diesel cleaning
flush), hose rated for 500 psi minimum. For
“B” drum, a 3/8” fl uid hose rated at only
300 psi may be used.
• SPRAY WAND: Only the spray wand sold by
CETCO is approved for the application of
LIQUID BOOT®.
• SPRAY TIPS: Replacement tips can be pur-
chased separately from CETCO.
LIQUID BOOT® 500 spray-application
effectively seals penetrations, footings,
grade beams and other irregular surfaces
that are considered critical vapor intrusion
pathways.
LIQUID BOOT® 500
SPRAY-APPLIED GAS VAPOR BARRIER
TECHNICAL DATATECHNICAL DATA
FORM: TDS_LIQUID_BOOT_500_AM_EN_201712_V1
North America: 847.851.1800 | 800.527.9948 | www.cetco.com
© 2017 Minerals Technologies Inc. IMPORTANT: The information contained herein supersedes all previous printed versions, and is believed to be accurate and reliable. For the most up-to-date information, please visit www.cetco.com. CETCO accepts no responsibility for the results obtained through application of this product. All products are sold on the understanding that the user is solely responsible for determining their suitability for the intended use and for proper use and disposal of the product. CETCO MAKES NO WARRANTY OF MERCHANTABILITY OR SUITABILITY FOR ANY PARTICULAR PURPOSE IN CONNECTION WITH ANY SALE OF THE PRODUCTS DESCRIBED HEREIN. CETCO reserves the right to update information without notice.
TESTING DATA
UPDATED: DECEMBER 2017
LIQUID BOOT® 500
SPRAY-APPLIED GAS VAPOR BARRIER
CHEMICAL & PHYSICAL PROPERTIES
PROPERTY TEST METHOD RESULT
Elongation ASTM D 412 800%
Bonded Seam Strength Tests ASTM D 6392 Passed
Methane Permeability ASTM D 1434 None Detected
Chemical Resistance:Tested at 20,000 ppm <1% weight change
Micro Organism Resistance (Soil Burial):ASTM D4068-88 Passed
Oil Resistance Test ASTM D543-87 Passed
Heat Aging:ASTM D4068-88 Passed
Dead Load Seam Strength City of Los Angeles Passed
Environmental Stress-Cracking ASTM D1693-78 Passed
Water Vapor Permeability ASTM E96 0.22 perms
Adhesion to Concrete ASTM C-836 Passed
Hardness ASTM C-836 Passed
Hydrostatic Head Resistance (Tested at 20 psi)ASTM D-751 Passed
TECHNICAL DATATECHNICAL DATA
FORM: TDS_ULTRASHIELD_G-1000_AM_EN_201705_V2
North America: 847.851.1800 | 800.527.9948 | www.cetco.com
© 2017 Minerals Technologies Inc. IMPORTANT: The information contained herein supersedes all previous printed versions, and is believed to be accurate and reliable. For the most up-to-date information, please visit www.cetco.com. CETCO accepts no responsibility for the results obtained through application of this
product. All products are sold on the understanding that the user is solely responsible for determining their suitability for the intended use and for proper use and
disposal of the product. CETCO MAKES NO WARRANTY OF MERCHANTABILITY OR SUITABILITY FOR ANY PARTICULAR PURPOSE IN CONNECTION WITH ANY SALE
OF THE PRODUCTS DESCRIBED HEREIN. CETCO reserves the right to update information without notice.
DESCRIPTION
ULTRASHIELD™ G-1000 is a polypropylene,
staple fiber, non-woven geotextile. The fibers
are needled-punched, forming a stable net-
work that retains dimensional stability rela-
tive to each other. The geotextile is resistant
to ultraviolet degradation and biological and
chemical environments found in soils. Manu-
facturing Quality Control tests have been
performed and are accredited by the Geosyn-
thetic Accreditation Institute’s Laboratory Ac-
creditation Program (GAI-LAP).
APPLICATION
ULTRASHIELD™ G-1000 is designed for use as
a underslab adhesion protection course spe-
cially designed and required for underslab LIQ-
UID BOOT® applications where the membrane
must remain attached to the underslab of the
building. This is to ensure the membrane re-
mains in place despite soil settlement, which
is common when building is on a landfill.
BENEFITS
ULTRASHIELD™ G-1000 is installed directly
over the finished LIQUID BOOT® vapor intru-
sion barrier, providing superior protection from
other trades.
PACKAGING
• 15 ft. x 180 ft. (4.5 m x 55 m) Rolls
ULTRASHIELD™ G-1000
NON-WOVEN GEOTEXTILE FABRIC
ULTRASHIELD™ G-1000 is a needle-punched, non-woven geotextile with superior tensile strength and puncture resistance.
UPDATED: MAY 2017
PHYSICAL PROPERTIES
PROPERTY TEST METHOD RESULT (ENGLISH)RESULT (METRIC)
Tensile Bond Strength to Concrete³ASTM C 297-94 7 psi
Mass/Unit Area ASTM D 5261 10.0 oz/yd²339 g/m²
Thickness ASTM D 5199 105 mils 2.7 mm
Tensile Strength ASTM D 4632 270 lbs.1202 N
Elongation ASTM D 4632 50%50%
CBR Puncture Strength ASTM D6241 725 lbs.3226 N
Trapezoid Tear ASTM D 4533 105 lbs.467 N
UV Resistance ASTM D 4355 70%70%
A.O.S.ASTM D 4751 100 U.S. Sieve 0.150 mm
Permittivity ASTM D 4491 1.2 sec–1 1.2 sec–1
Permeability ASTM D 4491 0.30 cm/sec 0.30 cm/sec
Water Flow Rate ASTM D 4491 85 gal/min//ft²3463 l/min/m²
TESTING DATA
NOTES:
1. The property values listed above are effective 04/2011 and are subject to change without notice.
2. All values shown are in weaker principal direction and are Minimum average roll values (MARV), except for AOS, which is a Maximum average roll value.
3. Historical value, based on past testing.
APPENDIX C
LIQUID BOOT® GeoVent, version 1.3 1 © 2009 CETCO

LIQUID BOOT® GeoVent Trenchless Gas Collection System
VERSION 1.3

These Specifications may have changed. Please contact CETCO Remediation Technologies at 714.384.0111 for the most recent version.

PART 1: GENERAL

1.1 SUMMARY OF WORK- Work related to the Soil Venting System includes providing soil vapor extraction piping and LIQUID BOOT®
GeoVent beneath the LIQUID BOOT® gas vapor membrane.

PART 2: PRODUCTS

2.1 MATERIALS

A. LIQUID BOOT® GeoVent is a composite low profile pressure relief, collection and venting system (PRCVS) consisting of a 3-dimensional
vent core and wrapped with a non-woven needle punched filter fabric. This product meets the following specifications:

B. Trenchless Gas Collection System properties:

TEST METHOD

TYPE OF TEST MINIMUM VALUE
ASTM D-1621 Core - Compressive Strength 9,500 psf
ASTM D-1777 Core - Thickness 1.0 in.
ASTM D-4716 Core – Flow Rate (Hydraulic gradient = 0.1) 30 g/min/ft. width
ASTM D-4833 Fabric - Puncture Strength 65 lbs.
ASTM D-4751 Fabric - Apparent Opening Size (AOS) 70 US Sieve
ASTM D-4632 Fabric - Grab Tensile Strength 100 lbs.
ASTM D-4491 Fabric - Permeability 0.21 cm/sec
ASTM D-4491 Fabric - Flow Rate 140 gal. min. ft.²
ASTM D-5261 Fabric - Mass per Unit Area 4.0 oz/yd²
ASTM D-4355 Fabric – UV Resistance 70%

Roll Weight 65 lbs
Roll Width 12 in
Roll Length 165 ft

C. LIQUID BOOT® GeoVent end outlet

D. LIQUID BOOT® GeoVent Interior Footing Sleeves

E. LIQUID BOOT® GeoVent Fabric Reinforced Tape

PART 3: EXECUTION

3.1 INSTALLATION

A. Roll out LIQUID BOOT® GeoVent per layout design as specified by Engineer.

B. Use prefabricated LIQUID BOOT® GeoVent Sleeves where venting is to penetrate interior footings. See the detail describing LIQUID
BOOT® GeoVent through footings.

C. At points of intersection, cut away geotextile to produce rectangular flaps. Interlock exposed dimple board in a Lego-like fashion. Fold flaps
of geotextile in a manner so that the dimple board is covered completely. Secure geotextile folds with LIQUID BOOT® Fiber Reinforced
Tape so that the geotextile is completely impermeable to sand fill.

D. Use LIQUID BOOT® GeoVent End Outlet to attach to solid (imperforated) 2 inch diameter PVC pipe at penetration through building
foundation. Seal/ grout piping at penetrations through foundation using approved methods. See the detail describing connection to a vent
riser.

®

1.1

APPENDIX D
Geo-Seal Vapor
Barrier Specifications
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.comLand Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-1
Geo-Seal® Vapor Intrusion Barrier 02 56 19.13
Fluid-Applied Gas Barrier Version 1.30
Note: If membrane will be subjected to hydrostatic pressure, please contact Land Science a division of REGENESIS for proper recommendations.
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.
1.3 Performance Requirements
A. General: Provide a vapor intrusion barrier system that prevents the passage of methane gas and/
or volatile organic compound vapors and complies with physical requirements as demonstrated by
testing performed by an independent testing agency of manufacturer’s current vapor intrusion barrier
formulations 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.
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
PART 1: GENERAL
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-2

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, a division of REGENESIS for the installation of the Geo-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 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).
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 Geo-Seal CORE and Geo-Seal CORE Detail components.
C. Remove and replace material that cannot be applied within its stated shelf life.
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-4
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 Geo-Seal 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 Geo-Seal 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 Geo-Seal applicator. To confirm the staking procedure is in agreement with the manufactures 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.
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-5
2.1 Manufacturers
A. Geo-Seal; Land Science, a division of REGENESIS, San Clemente, CA [phone]
1. Geo-Seal BASE sheet layer
2. Geo-Seal CORE spray layer and Geo-Seal CORE Detail
3. Geo-Seal BOND protection layer
2.2 Vapor Intrusion Barrier Spray Materials
A. Fluid applied vapor intrusion barrier system – Geo-Seal CORE; a single course, high build, polymer modified, asphalt emulsion. Waterborne and spray applied at ambient temperatures. A nominal thickness of 60 dry mils, unless specified otherwise. Non-toxic and odorless. Geo-Seal CORE Detail has similar properties with greater viscosity and is roller or brush applied. Manufactured by Land Science.
B. Fluid applied vapor intrusion barrier physical properties.
PART 2: PRODUCTS
02 56 19.13-6
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
2.3 Vapor Intrusion Barrier Spray Materials
A. The Geo-Seal BASE layer and Geo-Seal BOND layer are chemically resistant sheets comprised of a 5-mil high density polyethylene sheet thermally bonded to a 3 ounce non-woven geotextile.
B. Sheet Course Usage
1. As foundation base layer, use Geo-Seal BASE course and/or other base sheet as required or approved by the manufacturer.
2. As top protective layer, use Geo-Seal BOND layer and/or other protection as required or approved by the manufacturer.
C. Geo-Seal BOND and Geo-Seal BASE physical properties.
02 56 19.13-6
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-7
2.4 Axillary Materials
A. Sheet Flashing: 60-mil reinforced modified asphalt sheet good with double-sided adhesive.
B. Reinforcing Strip: Manufacturer’s recommended polypropylene and polyester fabric.
C. Gas Venting Materials: Geo-Seal Vapor-Vent HD or Geo-Seal Vapor-Vent Poly, and associated fittings.
D. Seam Detailing Sealant Mastic: Geo-Seal CORE Detail, a high or medium viscosity polymer modified water based asphalt material.
1. Back Rod: Closed-cell polyethylene foam.
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. Geo-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 Geo-Seal BASE. Remove any debris from substrate that can potentially puncture the Geo-Seal system prior to application.
2. Sand: A sand subgrade requires no additional preparation, provided any material that can potentially puncture the Geo-Seal 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 Geo-Seal system can accommodate a wide variety of different substrates. Contact Land Science Technologies if there are questions regarding the compatibility of Geo-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.
PART 3: EXECUTION
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-8
4. Mudslabs: The use of a mubslab under the Geo-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.
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 Geo-Seal 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 Geo-Seal CORE or Geo-Seal 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 Geo-Seal 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 Geo-Seal 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 Treatments 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 30-mils of Geo-Seal CORE to the terminating surface and then embed the Geo-Seal BASE layer by pressing it firmly into the Geo-Seal CORE layer. Next, apply 60 mils of Geo-Seal CORE to the BASE layer. When complete, apply the Geo-Seal BOND layer. After the placement of the Geo-Seal BOND layer is complete, apply a final 30-mil seal of the Geo-Seal CORE layer over the edge of the termination. For further clarification, refer to the termination detail provided by manufacturer.
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-9
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 Treatments of Penetrations
A. All pipe penetrations should be securely in place prior to the installation of the Geo-Seal system. Any loose penetrations should be secured prior to Geo-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 Geo-Seal BASE layer that will extend 6” beyond the outside perimeter of the penetration. Cut a hole in the Geo-Seal BASE layer just big enough to slide over the penetration, ensuring the Geo-Seal 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 Geo-Seal BASE layer and the penetration. Other methods can also be utilized, provided, there is not a gap larger than 1/8” between the Geo-Seal BASE layer and the penetration.
C. Seal the Geo-Seal BASE layer using Geo-Seal CORE or Geo-Seal CORE Detail to the underlying Geo-Seal BASE layer.
D. Apply one coat of Geo-Seal CORE Detail or Geo-Seal CORE spray to the Geo-Seal 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 fabric reinforcing strip after the first application of the Geo-Seal CORE spray or Geo-Seal 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 Geo-Seal 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 Geo-Seal CORE may be used to provide a finishing seal after the Geo-Seal 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.
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-10
3.6 Geo-Seal Base Layer Installation
A. Install the Geo-Seal BASE layer over substrate material in one direction with 6” overlaps and the geotextile (fabric side) facing down.
B. Secure the Geo-Seal BASE seams by applying 60 mils of Geo-Seal CORE between the 6” overlapped sheets with the geotextile side down.
C. Visually verify there are no gaps/fish-mouths in seams.
D. For best results, install an equal amount of Geo-Seal BASE and Geo-Seal CORE in one day. Leaving unsprayed Geo-Seal BASE overnight might allow excess moisture to collect on the Geo-Seal 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 Geo-Seal CORE layer over
the completed Geo-Seal BASE seam
3.7 Geo-Seal 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 Geo-Seal CORE layer, pull the trigger on the gun. A 42° fan pattern should form when properly sprayed. Apply one spray coat of Geo-Seal CORE to obtain a seamless membrane free from pinholes or shadows, with an average dry film thickness of 60 mils (1.52 mm).
F. Apply the Geo-Seal 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 Geo-Seal quality control measures, refer to the quality control procedures in Section 3.9 of this specification.
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-11
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 Geo-Seal 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 Geo-Seal CORE directly to concrete surface and use manufacturer’s recommended protection material based on site specific conditions. If applying Geo-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 Geo-Seal CORE layer
when not fully cured.
3.8 Geo-Seal Bond Protection Course Installation
A. Install Geo-Seal BOND protection course perpendicular to the direction of the Geo-Seal 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 Geo-Seal CORE layer, prior to the placement of the Geo-Seal BOND layer.
C. Overlap and seam the Geo-Seal BOND layer in the same manner as the Geo-Seal BASE layer.
D. To expedite the construction process, the Geo-Seal BOND layer can be placed over the Geo-Seal CORE immediately after the spray application is complete, provided the Geo-Seal CORE mil thickness has been verified.
3.9 Quality Assurance
A. The Geo-Seal system must be installed by a trained and certified installer approved by Land Science Technologies.
B. For projects that will require a material or labor material warranty, Land Science Technologies 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.
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-12
C. The measurement tools listed below will help verity the thickness of the Geo-Seal 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 Geo-Seal CORE membrane.
To verify the mil thickness of the Geo-Seal 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 Geo-Seal sheet 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 Geo-Seal CORE layer. The thickness of the Geo-Seal 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 Geo-Seal 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 5 to 10 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 63 (5%) to 66 (10%) mils.
Methods on how to properly conduct Geo-Seal 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 Geo-Seal vapor intrusion barrier and then repairing the areas where smoke appears. Refer to smoke testing protocol provided by Land Science Technologies. For projects that will require a material or labor material warranty, Land Science Technologies 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 Geo-Seal system should be easy to indentify due to the color contrasting layers of the system.
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
Vapor-Vent™
SOIL GAS COLLECTION SYSTEM
Version 1.5
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-14
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-Vent™ installation. 3. Vapor-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, Vapor-Vent.
2. Vapor-Vent accessories.
PART 1: GENERAL
SECTION 02 56 19 - GAS CONTROL
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
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, a division of REGENESIS for the installation of the Geo-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.
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.
2.1 Manufacturer
A. Land Science, a division of REGENESIS, San Clemente, CA [phone]
1. Vapor-Vent™
2.2 Gas Vent Materials
A. Vapor-Vent – Vapor-Vent is a low profile, trenchless, flexible, sub slab vapor collection system used in lieu or in conjunction with perforated piping. Vapor-Vent is offered with two different core materials, Vapor-Vent POLY is recommended for sites with inert methane gas and Vapor-Vent is recommended for sites with aggressive chlorinated volatile organic or petroleum vapors. Manufactured by Land Science.
B. Vapor-Vent physical properties
PART 2: PRODUCTS
02 56 19.13-15
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
2.3 Auxillary Materials
A. Vapor-Vent End Out
B. Reinforced Tape.
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.
3.3 Preparation for Strip Composite
A. Mark the layout of strip geocomposite per layout design developed by engineer.
PART 3: EXECUTION
02 56 19.13-16
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
3.4 Strip Geocomposite Installation
A. Install Vapor-Vent over substrate material where designated on drawings with the flat base of the core placed down and shall be overlapped in accordance with manufacturer’s recommendations.
B. At areas where Vapor-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 Vapor-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 Vapor-Vent End Out at both ends of the pipe before connecting the Vapor-Vent to the pipe reducer. Seal the Vapor-Vent to the Vapor-Vent End Out using fabric reinforcement tape. Refer to Vapor-Vent detail provided by Land Science Technologies.
D. Place vent risers per specifying engineer’s project specifications. Connect Vapor-Vent to Vapor-Vent End Out and seal with fabric reinforced tape. Use Vapor-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.
02 56 19.13-17
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
PRODUCT DATA SHEET
Geo-Seal® CORE
Geo-Seal® CORE is an elastic water-based co-polymer modified asphaltic membrane spray applied to a
minimum dry thickness of 60 mils. The CORE material has exceptional bonding to a wide variety of substrates
and will build up to the specified thickness in a single application. Since the CORE material is water-based,
there is little or no odor during or after product application, making it safe for use in sensitive areas. This
material can also be applied to green concrete as it exhibits exceptional bonding capability that will not
delaminate from the intended substrate. The seamless application of the CORE material makes for easy
installation around penetrations, uneven surfaces and oddly shaped areas. .
02 56 19.13-18
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-19
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
PRODUCT DATA SHEET
Geo-Seal® CORE Detail
Geo-Seal® CORE is an elastic water-based co-polymer modified asphaltic membrane spray applied to a
minimum dry thickness of 60 mils. The CORE material has exceptional bonding to a wide variety of substrates
and will build up to the specified thickness in a single application. Since the CORE material is water-based,
there is little or no odor during or after product application, making it safe for use in sensitive areas. This
material can also be applied to green concrete as it exhibits exceptional bonding capability that will not
delaminate from the intended substrate. The seamless application of the CORE material makes for easy
installation around penetrations, uneven surfaces and oddly shaped areas. .
02 56 19.13-19
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-20
PRODUCT DATA SHEET
Geo-Seal® BASE Layer
The Geo-Seal™ BASE layer is comprised of a high strength laminated HDPE membrane that is thermally
bonded to a polypropylene geotextile giving the BASE layer a high puncture resistance (Class A Rating) as well
as high chemical resistance. The BASE layer is installed over the substrate with the HDPE side facing up and
provides the ideal surface for the application of the Geo-Seal CORE component.
02 56 19.13-21
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
PRODUCT DATA SHEET
Geo-Seal® BOND Layer
The Geo-Seal™ BOND layer is comprised of a high strength laminated HDPE membrane that is thermally
bonded to a polypropylene geotextile giving the BASE layer a high puncture resistance (Class A Rating) as well
as high chemical resistance. The BOND layer is installed as a protection course over the BASE and CORE layers
with the geotextile side facing up. The BOND layer also provides an excellent substrate and friction surface for
concrete to adhere to.
02 56 19.13-22
Geo-Seal® Reinforcement Fabric
The Geo-Seal Reinforcement Fabric is a textile material composed of staple fibers hydraulically entangled,
which is composed of 100% polyester. The basic use of the Geo-Seal Reinforcement Fabric is designed to act
as reinforcement when used in conjunction with Geo-Seal CORE spray applied membrane.
PRODUCT DATA SHEET
EXPOSURE
(at room temperature)
1000 hours
1000 hours
6 hours
150 hours
1000 hours
1000 hours
1000 hours
ASTM D 3776
ASTM D 3776
ASTM D 1777
ASTM D 1777
ASTM D 1682
ASTM D 1682
ASTM D 3786
% STRENGTHENED RETAINED
100%
100%
100%
54%
100%
100%
100%
1.1
1.6
22
25
18
45
100
35
CHEMICAL
Dimethyl Formamide
Ethylene Glycol
1% Sodium Hydroxide
60% Sulfuric Acid
Perchlorethylene
Acetone
Distilled Water
PHYSICAL PROPERTY DATA
Weight /Square (lbs.)
Oz/Sq./Yd. (oz.)
Bulk (mills
Dry Tensile-MD (lbs.)
Dry Tensile-CD (lbs)
Elongation-MD (per/cent)
Elongation-CD (per/cent)
Mullen Burst (P. S. I.)
Packaging: 6” x 360’, 12” x 360’
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-23
Vapor-Vent™
Vapor-Vent™ is a low profile, trenchless, flexible, sub slab vapor collection system used in lieu of perforated
piping. Installation of Vapor-Vent increases construction productivity as it eliminates time consuming trench
digging and costly gravel importation. Vapor-Vent is offered with two different core materials, Vapor-Vent POLY
is recommended for sites with inert methane gas and Vapor-Vent is recommended for sites with aggressive
chlorinated volatile organic or petroleum vapors.
PRODUCT DATA SHEET
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-24
GEO-SEAL CORE MATERIAL SAFETY DATA SHEET
LAND SCIENCE, a division of REGENESIS
1011 Calle Sombra
San Clemente, CA 92673
949.481.8118
Trade Names: Geo-Seal CORE, Geo-Seal CORE Detail
Chemical Name: Asphalt Emulsion
Synonyms: N/A
Hazardous Ingredients/OSHA: CHEMICAL FAMILIES:
A. Bitumen/Asphalt
B. Synthetic rubber
C. Fatty acids
D. Polymers
Hazard: No evidence of serious health hazards exists.
Carcinogenic ingredients/OSHA/NTP: Bitumen IARC: None
Ingredient Percentage C.A.S.#.
Asphalt 50-60% 8052-42-4
Water 20-40% 7732-18-5
Latex 9003-55-8
Styrene Latex 0-15% 100-42-5
Butadiene Latex 0-15% 106-99-0
Sodium Hydroxide .1-1% 1310-73-2
Amino Ethanol .01-.1% 34375-28-5
1. Product Identification
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-25
2. Warning Statements
3. Physical and Chemical Data
4. Fire Protection
5. Reactivity Data
6. Health Hazard Data
7. Psychological Effects Summary
8. Precautions for Safe Handling
Avoid prolonged or frequent skin contact, as the presence of emulsifying and de-emulsifying agents during
application may irritate the skin.
Bitumen emulsions are water based products and as such will not burn. In cases of fire in the
vicinity of drums, cool with water.
Contact with strong oxidizing agents may create geling and water condensation.
Exposure Limits: Avoid prolonged or frequent skin contact.
Acute: Skin irritation and rash
Chronic: Dermatitis
Avoid contact with eyes.
Avoid inhalation.
Avoid prolonged or frequent skin contact.
Avoid ingestion.
Appearance: Brown to black
Specific Gravity: (H2O = 1): 1.028 (S) 1.034 (R) 1.13 (T)
Solubility in Water: Insoluble
Percent Volatiles: None
Boiling Point: N/A
Vapor Pressure (mm Hg): N/A
Vapor Density (Air = 1): N/A
Evaporation Rate: N
9. Protection and Control Measures
Protective Equipment: Use of clothing, gloves, and/or barrier cream is recommended
for skin protection.
Respiratory Protection: Inhalation should be avoided, but is not considered to be hazardous.
Ventilation: Use local exhaust ventilation when applying in an enclosed area.
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-26
10 .Emergency and First Aid Procedures
11 .Emergency and First Aid Procedures
12. Spill and Disposal Procedures
For ingestion: DO NOT induce vomiting. Keep at rest and get prompt medical attention.
For eye contamination: Irrigate eyes with water.
For skin contact: Wash affected areas of the body with proprietary hand cleaner, then wash with
soap and water.
Contact physician as needed for any of the above occurrences.
For ingestion: DO NOT induce vomiting. Keep at rest and get prompt medical attention.
For eye contamination: Irrigate eyes with water.
For skin contact: Wash affected areas of the body with proprietary hand cleaner, then wash with
soap and water.
Contact physician as needed for any of the above occurrences.
Contain spillages with sand or earth and remove by normal methods. Dispose of according to
State and Local regulations. If the Bitumen enters a water course or sewer, advise respective
water authority. The non-cured and cured material is non-toxic and non-flammable and can be
disposed of in land fill sites.
Other Precautions: For Additional Information Contact:
LAND SCIENCE, a division of REGENESIS
1011 Calle Sombra
San Clemente, CA 92673
949.366.8000
Information presented herein has been compiled from sources considered to be dependable and is accurate and reliable to the best of
our knowledge and belief but is not guaranteed to be so. Nothing herein is to be construed as recommending any practice or any product
in violation of any patent or in violation of law or regulation. It is the users responsibility to determine for himself the suitability of any
material for a specific purpose and to adopt such safety precautions as may be necessary. We make no warranty as to the results to be
obtained in using any material and, since conditions of use are not under our control, we must necessarily disclaim all liability with respect
to the use of any material supplied by us.
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-27
Geo-Seal BASE and BOND: Material Safety Data Sheet
LAND SCIENCE, a division of REGENESIS
1011 Calle Sombra
San Clemente, CA 92673
949.481.8118
1. Product Identification
2. Physical and Chemical Data
Trade Name: Geo-Seal BASE, Geo-Seal BOND
Chemical Name: POLYMERIC COMPONENTS, GEOTEXTILE FABRIC
Synonyms N/: A
Hazardous Ingredients/OSHA: NO HAZARDOUS INGREDIENTS
THIS PRODUCT IS SUPPLIED IN COMPLIANCE WITH THE TSCA REPORTING
REQUIREMENTS.
Carcinogenic Ingredients/OSHA/NTP: NONE
IARC NO: NE
Transportation information: CONTAINS NO HAZARDOUS INGREDIENTS
Transportation emergency: Land Science Technologies, 949-366-8000
Appearance and Odor: White Solid Sheet, Odorless
Specific Gravity (Water = 1): 0.90
Vapor Pressure (mm Hg): Not Determined
Vapor Density (Air = 1): Not Determined
Evaporation Rate: (Butyl Acetate - 1): N/A
Auto Ignition Temperature: Not Determined
Solubility in Water: Negligible,
below 0.1%
Percent Volatiles: None
Boiling Point: Degrees: Not Determined
Melting Point: 320° F
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-28
3. Fire and Explosion Data
4. Reactivity Data
5. Health Hazard Data
6. Protection and Control Measures
Flash Point: N/A
Flammable limits %: Lower N/A Upper N/A
Extinguishing Media: Agents approved for Class A hazards (e.g. foam, steam) or water fog.
Special Fire Fighting Procedures: Firefighters should wear full bunker gear, including a positive pressure
self-contained breathing apparatus.
Unusual Fire and Explosion Hazards: None identified.
Stability: Stable
Conditions to avoid: Keep away from ignition sources (e.g. heat, sparks and open flames).
Incompatibility (materials to avoid): None Identified
Hazardous Decomposition or Byproducts: Incomplete burning can produce carbon
monoxide and/or carbon dioxide and other harmful products.
Hazardous Polymerization: Will not occur
Route(s) of Entry: Inhalation: No Skin: No Ingestion: No
Health Hazards (Acute & Coronic): Will not present any health hazards under normal processing conditions.
Eye & Skin Contact: None Identified.
Skin Absorption: Non-toxic.
Inhalation: No significant irritation expected.
Ingestion: No significant health hazards identified.
Carcinogenicity: Unrelated NTP: No IARC: No OSHA Regulated: No
Precautions to be taken in handling and storing: Store away from heat, ignition sources and open flame
in accordance with applicable regulations.
Respiratory Protection: Not required under normal process conditions.
Ventilation: Local Exhaust
Protective Gloves: Not required.
Eye Protection: Not required.
Other Protective clothing or equipment: Not required.
Work/Hygienic Practices: Wash hands after handling and before eating.
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-29
7. Emergency and First Aid Measures
8. Spill and Disposable Procedures
In Case of Combustion (550°)”
Eye Contamination: Flush with large amounts of water for 20 minutes lifting upper and lower lids
occasionally. Get medical attention.
Skin contact: Thoroughly wash exposed area with soap and water. Remove contaminated clothing. Launder
contaminated clothing before reuse.
Inhalation: If overexposure occurs, remove individual to fresh air. If breathing stops, administer artificial
respiration. Get medical attention.
Ingestion: If a large amount of material is swallowed DO NOT INDUCE VOMITING. If vomiting begins lower
victim’s head in an effort to prevent vomit from entering lungs and get medical attention.
Information presented herein has been compiled from sources considered to be dependable and is accurate and reliable to the best of our
knowledge and belief but is not guaranteed to be so. Nothing herein is to be construed as recommending any practice or any product in
violation of any patent or in violation of law or regulation. It is the users responsibility to determine for himself the suitability of any material
for a specific purpose and to adopt such safety precautions as may be necessary. We make no warranty as to the results to be obtained in
using any material and, since conditions of use are not under our control, we must necessarily disclaim all liability with respect to the use of
any material supplied by us.
Spill is not applicable. Material is normally in solid form.
LAND SCIENCE , a division of REGENESIS
1011 Calle Sombra
San Clemente, CA 92673
949.366.8000
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-30
Geo-Seal Quality Control
Certified Applicator
Authorized installation of Geo-Seal can only be accomplished by one of Land Science Certified Applicators.
Membrane Inspections
For projects that will require a material or system ( workmanship and material) warranty, Land Science Technologies 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 applicator 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.

Material Yield
Material yield is one of the first indicators in determining if the Geo-Seal CORE layer has been installed correctly. A baseline standard for yield is as follows:
The estimated yield is 17 ft2 per gallon for a 60 dry mil application using the recommended thickness, unless otherwise noted by a specified engineer or regulatory agency.
Yields can decrease based on the complexity of the foundation. Projects containing many penetrations and areas where a lot of detailing is required might reduce the material yield to 16 ft2 or 15 ft2 per gallon for a 60 mil membrane.
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-31
Millage Verification
The measurement tools listed below will help verify the thickness of the Geo-Seal 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 Geo-Seal CORE membrane.
To verify the mil thickness of the Geo-Seal CORE, the following measurement devices are required:
Mil reading caliper: Calipers are used to measure the thickness of coupon samples. To measure coupon samples correctly, the thickness of the Geo-Seal sheet layers must be taken into account (This is best done by obtaining a sample of the Geo-Seal BASE layer and then zeroing out the caliper to the Geo-Seal BASE layer). Mark sample area for repair.
Wet mil thickness gauge: A wet mil thickness gauge may be used to quickly measure the mil thickness of the Geo-Seal CORE layer. The thickness of the Geo-Seal sheet layers do not factor into the mil thickness reading, but the softness of the subgrade might result in inaccurate readings.
NOTE: When first using a wet mil thickness gauge on a project, collect coupon samples to verify the wet mil
gauge thickness readings.
Needle nose digital depth gauge: A needle nose depth gauge can be used when measuring the Geo-Seal 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 5 to 10 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 63 (5%) to 66 (10%) mils.

Visual Inspections
The guidelines outlined in this section provide ways to quantify and observe the proper installation of the Geo-Seal system. However, a visual inspection should also be done to ensure any visual imperfections are not present, i.e. fish-mouths, punctures, voids, etc. During a visual inspection, punctures in the Geo-Seal
system should be easy to indentify due to the color contrasting layers of the system.
Membrane Testing Log
To aid in the inspection process and properly document the Geo-Seal membrane inspection, create a membrane testing log. We recommend creating the log by using the foundation plan (plan view) of the structure and then creating a 500 ft2 grid over the foundation. If this is not able to be done, enclosed is a membrane testing log template that can also be used. (Appendix E)
Wet Mil Thickness Readings
A wet mil thickness gauge is one method to verify the mil thickness of the Geo-Seal CORE layer. An advantage to this method is the ability to verify the Geo-Seal CORE thickness by minimizing destructive coupon sampling.
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-32
1. Create a membrane testing log by obtaining a copy of the foundation plan and then draw a 500
ft2 grid over the foundation plan. Make two copies of the membrane testing log; one should
be used when collecting coupon samples and the other should be used when conducting the
smoke test.
2. Note time, date, project name, inspector name, temperature and weather conditions on testing
log.
3. Number each quadrant and inspect sequentially.
4. When arriving at each quadrant quickly assess if there are any conditions that might present
any challenges in establishing a proper seal. Note areas and discuss with applicator.
5. Conduct a visual inspection of the membrane. Look for areas where a proper seal was not
created, i.e.a fish-mouth at the termination and areas where the membrane might be sprayed
thin. Mark areas needed for repair in the field with florescent paint or with chalk. Also make a
note on the testing log.
6. Conduct a thickness sample in the area that is suspected to be sprayed thin and take three
readings within 3” of one another. When beginning a project, verify the wet mil gauge thickness
reading by cutting a coupon sample and measuring the thickness with a caliper. Once wet mil
thickness readings have been confirmed and established, confirm wet mil thickness periodically
by taking a coupon sample and caliper measurement.
7. After sampling 5 quadrants it is at the discretion of the inspector to continue collecting samples
every 500 ft2 or 1,000 ft2.
8. This method will verify the thickness of the Geo-Seal CORE layer prior to it fully curing.
Observed shrinkage of the Geo-Seal CORE layer during the curing process ranges from 5% to
10%. When taking uncured samples assume a minimum of 10% loss for horizontal surfaces and
5% for vertical surfaces. Assuming a 10% loss, the gauge should read a mil thickness between
65 and 70 mils (≥66 mils).
9. If using a wet mil gauge to verify a fully cured membrane the gauge should read 60 mils.
10. When testing is complete, send a copy of the membrane testing log to Land Science
Technologies. Keep the coupon samples for the file, or send them to Land Science
Technologies.
Coupon Sampling
Coupon sampling is the most accurate way to verify the Geo-Seal CORE thickness. However, please note that taking too many coupon samples, or destructive samples, can be counter-productive. To collect a coupon sample the following steps should be followed:
1. Create a membrane testing log by obtaining a copy of the foundation plan and then draw a 500 ft2 grid over the foundation plan. Make two copies of the membrane testing log, one should be used when collecting coupon samples and the other should be used when conducting the smoke test.
2. Note time, date, project name, inspector name, temperature and weather conditions on testing log.
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-33
3. Number each quadrant and inspect sequentially.
4. When arriving at each quadrant quickly assess if there are any conditions that might present any challenges in establishing a proper seal. Note areas and discuss with applicator.
5. Conduct a visual inspection of the membrane. Look for areas where a proper seal was not created, i.e. a fish-mouth at the termination and areas where the membrane might be sprayed thin. Mark areas needed for repair in the field with florescent paint or with chalk. Also make a note on the testing log.
6. Calibrate mil reading caliper to account for the thickness of the Geo-Seal BASE layer. This is best done by obtaining a sample of the Geo-Seal BASE layer and then zeroing out the caliper to the Geo-Seal BASE layer.
7. Collect a coupon sample in the area that is suspected to be sprayed thin. Use a box cutter to cut a 3 square inch sample from the membrane. Measure each side to confirm the specified minimum thickness has been obtained. Number each sample and save in the job file. Mark the area for repair in the field and on the site plan.
8. After sampling 5 quadrants it is at the discretion of the inspector to continue collecting samples every 500 ft2 or 1,000 ft2.
9. Samples may be collected prior to the Geo-Seal CORE layer fully curing. Observed shrinkage of the Geo-Seal CORE layer during the curing process for horizontal surfaces is 10%. Assuming a 10% loss, a minimum of 66 mills thickness should be measured for a cured measurement of 60 mils.
10. When testing is complete, send a copy of the membrane testing log to Land Science. Keep the coupon samples for the file, or send them to Land Science.
Smoke Testing
This test is intended to visually verify and confirm the proper installation of the Geo-Seal system. Land Science requires a smoke test on all projects in order to obtain a warranty. The smoke test will be performed by the applicator.
Smoke testing should occur after the Geo-Seal CORE layer has been installed and mil thickness verified. Smoke testing may occur after the Geo-Seal BOND layer is installed, if preferred by the applicator. Upon completion of the original smoke test, additional smoke tests can be conducted per the membrane manufacturer’s, specifying engineer or regulatory agency’s request. To conduct a smoke test follow these steps:
1. One smoke test can cover between 2000-3000 ft2 per test. However, coverage will greatly depend on the sub grade under the membrane. On sites where multiple smoke tests will be needed, use the first two smoke tests to estimate the coverage area per test.
2. Visual verification of soundness of seams, terminations and penetrations should be performed. Identify/correct any apparent deficiencies and/or installation problems.
3. Note time, date, project name, inspector name, temperature and weather conditions on testing log. In addition, record humidity, barometric pressure, and wind speed/direction. Confirm wind speed is below 15 mph. Visual identification of leaks becomes more difficult with increasing wind speed.
Land Science | 1011 Calle Sombra San Clemente, CA 92673 | T: [phone] | www.landsciencetech.com
02 56 19.13-34
4. Cap other vent outlet(s) not being used. If the installation has no sub-slab vent system or the membrane is isolated from the vent system, connect the smoke testing system directly to the membrane using a temporary boot collar or other method. Insert the smoke test hose into coupon sampling locations, creating a seal around the smoke test hose with a rag.
5. Activate the smoke generator/blower system and connect to sub-slab vent riser or directly to the membrane.
6. To confirm the adequate flow of smoke under the membrane cut a 2” vent in the membrane to facilitate the purging of air pockets under it. If working properly, smoke will consistently flow though the 2” vent. If a low rate of smoke flow is observed it is an indication of poor smoke flow under the membrane. If low flow does occur, insert the smoke testing hose into the 2” membrane vent.
7. Mark sampling locations with fluorescent paint or chalk. Repair sampling locations per Land Science recommendations
8. Maintain operation of smoke generator/blower system for at least 15 minutes following purging of membrane. Thoroughly inspect entire membrane surface. Use fluorescent paint or chalk to mark/label any leak locations. Mark/label leak locations on testing log. NOTE: The duration of the smoke test will vary depending on the size of the area being tested. To help determine the duration, monitor the pressure building up under the membrane. If excessive lifting of the membrane occurs, decrease the duration or pressure of the smoke test.
9. Prepare membrane inspection log. Identify the type of leak found, i.e. poor seal around penetration, fish-mouth, puncture, etc.
10. Repair leak locations marked in step 7 and step 8 per procedures outlined in “Geo-Seal Repair Procedures” section using Geo-Seal CORE or Geo-Seal DETAIL.
11. Repeat steps 4 through 10 as necessary to confirm the integrity of the membrane.
12. Complete the smoke testing inspection form indicating the successful completion of the smoke test.
Post-Installation Inspection
After a manufacturer’s representative or 3rd party inspector signs off on the membrane installation and the steel workers begin to install the rebar, it is recommended to conduct a visual inspection prior to the pouring of concrete. Damages are most likely to occur during this time and it is imperative that punctures are indentified prior to the placement of the slab. The system configuration of Geo-Seal, the top white Geo-Seal BOND layer with a middle black layer, will make rebar punctures easy to identify when conducting a visual inspection.
GEO-SEAL CORE (60 MIL)GEO-SEAL BASEBASE OVERLAPDETAIL1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
GEO-SEAL BASEGEO-SEAL CORE (60 MIL)GEO-SEAL BOND
GEO-SEAL BONDGEO-SEAL BASESHORINGGEO-SEAL CORE(60 MIL)
02 56 19.13-36 GEO-SEAL BASEGEO-SEAL BONDGEO-SEAL CORE(60 MIL)ELEVATOR PITDETAIL1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
02 56 19.13-37 1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
02 56 19.13-38 1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
02 56 19.13-39 1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
02 56 19.13-41 1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
GEO-SEAL CORE(60 MIL)GEO-SEAL BONDGEO-SEAL BASEGEO-SEAL CORE(60 MIL)UNDER FOOTINGDETAIL Mod.1011 CALLE SOMBRA TITLESAN CLEMENTE, CA 92673 949.366.8000 OFFICEWWW.LANDSCIENCETECH.COMSCALEDATE1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
02 56 19.13-43 1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
02 56 19.13-44 1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
02 56 19.13-45 GEO-SEAL BONDGEO-SEAL BASEGEO-SEAL CORE(60 MIL)VERTICALTERMINATIONDETAIL1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
02 56 19.13-46 1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
02 56 19.13-47 VAPORVENTGRAVELSOLID PIPEVAPORVENTPIPE REDUCERVAPORVENTTHROUGHFOOTING1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
1011 CALLE SOMBRASAN CLEMENTE, CA 92673949.481.8118WWW.LANDSCIENCETECH.COM© 2012 LAND SCIENCE TECHNOLOGIES
APPENDIX E
Page 1 of 2
Geo-Seal® Warranty Information
Land Science Technologies™ is pleased to offer the following warranty options for the Geo-Seal® vapor
intrusion management system. The warranty options below are approved on a project-by-project basis. To
gain approval for a specific project please contact your local Land Science Technologies representative or our
corporate office [phone].
Approval of Warranty
Warranty options listed below must be requested and approved by Land Science Technologies prior to the
formal bids being submitted by Land Science Technologies’ certified contractors. A standard 1 year Material
Warranty will be assumed if no special request is made.
Material Warranty
This warranty states that the Geo-Seal material will be free of defects for the specified warranty period. The
standard material warranty offered by Land Science Technologies is a one (1) year Material Warranty.
Material Warranty
Bottom Middle Top
Geo-Seal Base (18 mil) Geo-Seal Core - 60 mil dry Geo-Seal Film-11 (11 mil)
Geo-Seal Bond (18 mil)
Geo-Seal Film 11 (11 mil) Geo-Seal Core - 30 mil dry Geo-Seal Film-5 (5 mil)
Extended term material warranties are offered for a period ranging from five (5) to thirty (30) years. A
review of the following will be required in order to obtain an extended term Material Warranty:
•Soils report, or equivalent document, which contains ground water or soil gas data prior to bids being
submitted.
•Inspection Field Report generated by 3rd party inspector certified by Land Science Technologies
confirming the QA/QC requirements set forth by Land Science Technologies are followed.
Extended Term Material Warranty fee:
Material warranty extended for 10 years: $0.025 per square foot
Material warranty extended for 20 years: $0.05 per square foot
Material warranty extended for 30 years: $0.10 per square foot
•
•
•
Page 2 of 2
System Warranty
This warranty option covers both the Geo-Seal material and the applicator’s workmanship for the specified
warranty period.
System Warranty
Bottom Middle Top
Geo-Seal Base (18 mil)
Geo-Seal Core - 60 mil dry
Geo-Seal Film-11 (11 mil)
Geo-Seal Film 11 (11 mil) Geo-Seal Bond (18 mil)
System warranties are available for a 5 year period, and up to 20 years. To request a system warranty a
review of the following will be required:
•Soils report, or equivalent document, which contains ground water or soil gas data prior to bids being
submitted
•Comprehensive review of project drawings prior to bid date including project-specific vapor
mitigation details or drawings
•Inspection Field Report generated by 3rd party inspector certified by Land Science Technologies
confirming the QA/QC requirements set forth by Land Science Technologies are followed.
System Warranty fee:
•5 year system warranty is $0.04 per square foot, minimum cost of $250.00
•10 year system warranty is $0.08 per square foot, minimum cost of $500.00
•15 year system warranty is $0.12 per square foot, minimum cost of $750.00
•20 year system warranty is $0.16 per square foot, minimum cost of $1000.00
Please contact your Land Science Technologies representative to discuss performance goals and desired
warranty coverage.
Revised 8/25/2016