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10047_Atherton Mills VMS Construction Package Units 75_80 20150209
Correspondence: Amec Foster Wheeler Environment & Infrastructure, Inc. 1308 Patton Avenue Asheville, North Carolina 28806 Tel 828.252.8130 NC Engineering License No. F-1253 February 9, 2015 Ms. Carolyn Minnich, Brownfields Project Manager North Carolina Department of Environment and Natural Resources Division of Waste Management Brownfields Program 1646 Mail Service Center Raleigh, North Carolina 27699-1646 Subject: Vapor Mitigation System Construction Package Atherton Mill Property Units 75 and 80 2000 South Boulevard Charlotte, Mecklenburg County, North Carolina Brownfields Project Number: 10047-06-60 Amec Foster Wheeler Project: 6228-12-0051 Dear Ms. Minnich: On behalf of Atherton Mill (E&A), LLC (Owner), Amec Foster Wheeler is pleased to provide this Vapor Mitigation System Construction Package for Units 75 and 80 at the Atherton Mill property in Charlotte, North Carolina. This vapor mitigation system information is being submitted in response to your request during a meeting at the property on January 21, 2015, and is a supplement to our Vapor Mitigation Plan dated January 13, 2015. This construction package provides additional information on the installation of a Geo-Seal vapor mitigation system in Units 75 and 80, which have a floor area of approximately 7,400 square feet. In order to mitigate volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOCs) detected in the indoor air samples collected from Units 75 and 80, Owner will remove and dispose of the existing wood block flooring and concrete slab within Units 75 and 80. The existing wood block flooring is about 2.5 inches thick and rests on the concrete slab constructed in the early 1900s. After flooring and slab removal, the subgrade will be leveled to design elevation and an approximate four-inch thick layer of wash stone will be placed in the area. A Land Science Technologies™ Geo-Seal Vapor Intrusion Barrier® and Vapor-Vent™ vapor collection system will be installed by a Geo-Seal certified contractor on top of and within the wash stone layer prior to construction of a new four-inch thick concrete floor slab. The vapor vent collection systems will connect to riser pipes that will be extended through the roof of the structure. At this time, installation of in-line fans is not proposed; however, the discharge vent Vapor Mitigation System Construction Package Atherton Mill Property Units 75 and 80 2000 South Boulevard Charlotte, Mecklenburg County, North Carolina Brownfields Project Number: 10047-06-60 Amec Foster Wheeler Project: 6228-12-0051 1. Manufacturer product data sheets 2. Component specifications 3. Vapor mitigation system drawings/details February 6, 2015 Amec Environment & Infrastructure, Inc. 1308 Patton Avenue Asheville, North Carolina 28806 NC Engineering License No. F-1253 DRAFT – FOR REVIEW PURPOSES ONLY NOT FOR CONSTRUCTION ™Geo-Seal Advanced Vapor Management Technology www.landsciencetech.com Land Science Technologies (LST) ™ is dedicated to providing advanced technologies for sustainable land development. A goal of LST is to provide innovative and technically sound development solutions for underutilized environmentally impaired properties, commonly referred to as Brownfields. LST’s cost-effective, industry leading technologies offer engineering firms and real estate developers solutions to issues facing the development of Brownfields today. LST is a division of Regenesis, Inc., a global leader in groundwater and soil remediation technologies since 1994. www.regenesis.com HISTORY ™Geo-Seal Geo-Seal™ is an advanced composite gas vapor management technology (patent pending) designed to eliminate potential indoor air quality health risks associated with subsurface contaminant vapor intrusion. Geo-Seal is an ideal gas vapor management technology designed for use on Brownfields or any type of environmentally impaired site, i.e. manufacturing facilities, dry cleaners, gasoline service stations, landfills, etc. Geo-Seal is placed between the foundation of the building and the soil pad to eliminate vapor exposure pathways and stop contaminated vapors from permeating through the slab. Vapor management systems incorporating both Geo-Seal vapor barrier and Vapor-Vent ventilation provide industry leading sub-foundation vapor mitigation technology. By deploying these systems developers ensure a healthy indoor environment while reducing the cost of site remediation and expediting site construction. Triple-Layer Protection The triple-layer system used in Geo-Seal provides maximum redundancy and protection against the formation of vapor pathways both during and after installation. Such pathways can result from chemically induced materials breakdown, punctures, and seam weaknesses resulting from poor detail work and/or application installation imperfections around penetrations. Geo-Seal also provides unmatched protection from a range of contaminant vapors including those from petroleum-based products and chlorinated hydrocarbons. Field-Proven Technology Geo-Seal is manufactured in partnership with E-Pro™ Systems which has over 20 years experience in the building products industry and a leading track record in barrier systems for vapor and waterproofing applications. PRODUCT FEATURES Dual Chemical Resistant Layers The BASE layer (bottom) and the BOND layer (top) are composed of a high-density polyethylene material bonded to a geo-textile on the out-facing side. High density polyethylene is known for chemical resistance, high tensile strength, excellent stress-crack resistance and for highly reliable subsurface containment. The geo-textile which is physically bonded to the chemical resistant layer accomplishes two goals; it allows the BOND layer to adhere to slab, and provides a friction course between the BASE layer and the soil. Spray Applied CORE Layer The CORE layer is composed of a unique, elastic co-polymer modified asphaltic membrane which also provides additional protection against vapor transmission. This layer creates a highly-effective seal around slab penetrations and eliminates the need for mechanical fastening at termination points. Chemical Resistance The dual chemical resistant layers combined with the spray CORE form a barrier resistant to the most concentrated chemical pollutant vapors. Enhanced Curing Geo-Seal is “construction friendly” as the reduced curing time of the Geo-Seal CORE layer and the ability to apply it in cooler temperatures ensures quick installation and minimizes the impact on construction schedules. Puncture Resistance Geo-Seal forms a highly puncture resistant barrier that greatly reduces the chance of damage occurring after installation and prior to the placement of concrete. Removing Contained Vapors Vapor-Vent can be used in conjunction with Geo-Seal to alleviate the buildup of vapors beneath structures as a result of vapor barrier implementation. Vapor- Vent can be utilized as an active or passive ventilation system depending on the requirements of the design engineer. Certified Applicator Network The application of Geo-Seal and Vapor-Vent can be performed by any one of many certified applicators throughout the country. Service and Support Geo-Seal representatives are available to provide job and site specific assistance. A local representative can ensure Geo-Seal and Vapor-Vent is installed as per the specification. Geo-Seal™ Triple-Layer System (2 Chemical Resistant Layers + 1 Spray Applied Core Layer) DIAGRAM 3 2 1 1 2 3 ™Geo-Seal™Geo-Seal 44 Geo-Seal CORE is the spray-applied, middle layer of the Geo-Seal barrier that ensures proper sealing of potential vapor pathways. Problematic pipe penetrations and effective seals at termination points are easily detailed and sealed with the utilization of the CORE Layer. Geo-Seal BOND is the proprietary top layer that completes the triple layered Geo-Seal barrier. The BOND layer serves two purposes; it helps protect the system from getting punctured after installation and provides the final layer of chemical resistance. Vapor-Vent:•When used with Geo-Seal provides maximum protection against contaminated vapor•Eliminates the need for trenching•Cost-effective compared to pipe and gravel systems•Eliminates long-term costs when configured as a passive system•Allows for rapid installation Application Diagram Diagram LabelsGeo-Seal BASE is the foundational, chemical resistant, bottom layer that is rolled out onto the exposed soil surface. This layer is applied with a geo-textile side facing down to provide greater friction with the soil surface. The Geo-Seal BASE Layer is a high-quality substrate and enables the second, spray-applied CORE Layer to be free of shadowing and pinholes. Land Science Technologies 1011 Calle Sombra Suite 110 San Clemente, CA 92673 Ph. 949-366-8000 Fax. 949-366-8090 www.landsciencetech.com 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. COVERAGES TEST METHOD UNITS Application to BASE Layer 60 mils (17 ft2/gal) Typical Uncured Properties Specific Gravity ASTM D 244 1.00 Viscosity ASTM D 1200 >25 centipoise PH 12.3 Flammability ASTM D 3143 5000 F Color Brown to Black Non-Toxic No Solvents Shelf Life 6 months Typical Cured Properties Tensile Strength ASTM 412 32 psi Elongation ASTM 412 4.140% Resistance to Decay ASTM E 125 Section 13 4% Perm Loss Accelerated Aging ASTM G 23 No Effect Moisture Vapor Transmission ASTM E 96 0.088 g / ft2 per hour Hydraulic Water Pressure ASTM D 751 26 psi Perm Rating ASTM E 96 (US Perms) 0.21 Methane Transmission Rate ASTM D 1434 Passed Adhesion to Concrete & Masonry ASTM C 836 & ASTM C 704 11 lbf / inch Hardness ASTM C 836 80 Crack Bridging ASTM C 836 No Cracking Low Temp Flexibility ASTM C 836-00 No Cracking at -200 C Resistance to Acids Acetic 30% Sulfuric and Hydrochloric 13% Temperature Effect: Stable 2480 F Flexible 130 F Packaging: 330 gal. totes or 55 gal. drums Approvals: City of Los Angeles RR# 25478, NSF Land Science Technologies, Inc. / 1011 Calle Sombra / Suite 110 / San Clemente / CA / 92673 Ph. 949-366-8000 / F. 949- 366-8090 www.landsciencetech.com Product Data Sheet Geo-Seal™ CORE DETAIL Geo-Seal™ CORE DETAIL is ideally used to perform detailing and repairs to the Geo-Seal system. It is also ideal for those areas where the necessary clearance is not available for the application of the Geo-Seal spray. This proprietary and unique material can be used all at once or over a period of a few days without breaking down or hardening. Geo-Seal CORE DETAIL is water-based and can be applied to green concrete with exceptional bonding capability that will not delaminate from the intended substrate. Geo-Seal CORE DETAIL’s viscosity allows high build applications to be done easily due to its ability to set quickly and get jobs done fast. PROPERTIES TEST METHOD UNITS TYPICAL UNCURED PROPERTIES Specific Gravity 1.034 Viscosity 9m-13m centipoise PH 11.5 Flammability 2700 F Color Brown to Black Non-Toxic No Solvents Shelf Life 6 months TYPICAL CURED PROPERTIES Initial Cure 30 minutes Final Cure 24-24 hours Tensile Strength ASTM 412 32 psi Elongation ASTM 412 3.860% Resistance to Decay ASTM E 125 Section 13 9% Perm Loss Accelerated Aging ASTM G 23 No Effect Moisture Vapor Transmission ASTM E 96 0.088 gal/ft2 per hour Hydrostatic Water Pressure ASTM D 751 28 psi Perm Rating (US Perms) ASTM E 96 0.17 Methane Transmission Rate ASTM D 1434 0 Adhesion to Concrete & Masonry ASTM C 836 7 lbf/inch Hardness ASTM C 836 85 Crack Bridging ASTM C 836 No Cracking Low Temp Flexibility ASTM C 836-00 No Cracking at -200 C Resistance to Acids Acetic 30% Sulfuric and Hydrochloric 15% COVERAGES 60-mils (dry) 19 ft2/gal Packaging: Available in 1 or 5 gal. buckets Approvals: City of Los Angeles RR# 25478 (for methane and waterproofing), NSF Standard 61 for potable water containment Land Science Technologies, Inc. / 1011 Calle Sombra / Suite 110 / San Clemente / CA / 92673 Ph. 949-366-8000 / F. 949- 366-8090 www.landsciencetech.com 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. PROPERTIES TEST METHOD Geo-Seal BASE Film Thickness 5 mil Composite Thickness 18 mil Tensile @ ULT ASTM D 882 MD 37.3 lbs / in ASTM D 882 TD 32.0 lbs / in Elongation @ ULT ASTM D 882 MD 51.00% ASTM D 882 TD 55.30% Dart Impact ASTM D 1709 Method A >1070 gms Method B 594 gms Modulus ASTM D 882 MD 295.5 lbs / in ASTM D 882 TD 270.6 lbs / in Elmendorf Tear ASTM D 1922 MD 5,260 gms ASTM D 1922 TD 5,140 gms Puncture Prop. Tear ASTM B 2582 MD 11,290 gms ASTM B 2582 TD 13,150 gms Beach Puncture Tear ASTM D 751 MD 160 lb / in ASTM D 751 TD 165 lb / in Permeability (water vapor) ASTM E96 0.214 Chemical Resistance Excellent Packaging: 15’x150’ = 100 lbs Land Science Technologies, Inc. / 1011 Calle Sombra / Suite 110 / San Clemente / CA / 92673 Ph. 949-366-8000 / F. 949- 366-8090 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. PROPERTIES TEST METHOD Geo-Seal BOND Film Thickness 5 mil Composite Thickness 18 mil Tensile @ ULT ASTM D 882 MD 37.3 lbs / in ASTM D 882 TD 32.0 lbs / in Elongation @ ULT ASTM D 882 MD 51.00% ASTM D 882 TD 55.30% Dart Impact ASTM D 1709 Method A >1070 gms Method B 594 gms Modulus ASTM D 882 MD 295.5 lbs / in ASTM D 882 TD 270.6 lbs / in Elmendorf Tear ASTM D 1922 MD 5,260 gms ASTM D 1922 TD 5,140 gms Puncture Prop. Tear ASTM B 2582 MD 11,290 gms ASTM B 2582 TD 13,150 gms Beach Puncture Tear ASTM D 751 MD 160 lb / in ASTM D 751 TD 165 lb / in Permeability (water vapor) ASTM E96 0.214 Chemical Resistance Excellent Packaging: 15’x150’ = 100 lbs Land Science Technologies, Inc. / 1011 Calle Sombra / Suite 110 / San Clemente / CA / 92673 Ph. 949-366-8000 / F. 949- 366-8090 www.landsciencetech.com Product Data Sheet 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. CHEMICAL EXPOSURE (at room temperature)% STRENGTHENED RETAINED Dimethyl Formamide 1000 hours 100% Ethylene Glycol 1000 hours 100% 1% Sodium Hydroxide 6 hours 100% 60% Sulfuric Acid 150 hours 54% Perchlorethylene 1000 hours 100% Acetone 1000 hours 100% Distilled Water 1000 hours 100% PHYSICAL PROPERTY DATA Weight/Square (lbs.) ASTM D 3776 1.1 Oz./Sq./Yd. (oz.) ASTM D 3776 1.6 Bulk (mills) 22 Dry Tensile-MD (lbs.) ASTM D1777 25 Dry Tensile-CD (lbs.) ASTM D 1777 18 Elongation-MD (per/cent) ASTM D 1682 45 Elongation-CD (per/cent) ASTM D 1682 100 Mullen Burst (P. S. I.) ASTM D 3786 35 Packaging: 6” x 360’, 12” x 360’ Land Science Technologies, Inc. / 1011 Calle Sombra / Suite 110 / San Clemente / CA / 92673 Ph. 949-366-8000 / F. 949- 366-8090 www.landsciencetech.com Product Data Sheet Geo-Seal™ VaporVent Geo-Seal™ VaporVent is a low profile, trenchless, flexible, sub slab vapor collection system used in lieu of perforated piping. Installation of VaporVent increases construction productivity as it eliminates time consuming trench digging and costly gravel importation. VaporVent is offered with two different core materials, VaporVent-PS is recommended for sites with inert methane gas and VaporVent-HD is recommended for sites with aggressive chlorinated volatile organic or petroleum vapors. VENT PROPERTIES TEST METHOD VaporVent-PS VaporVent-HD Material Polystyrene HDPE Comprehensive Strength ASTM D-1621 9,000 lbs / ft2 9,200 lbs / ft2 Shear Strength ASTM D-1621 9,500 lbs / ft2 N/A Peel Strength ASTM D-1876 38 lbs / ft 35 lbs / ft Fungus Resistance (core) ASTM G-21 No Growth No Growth In-plane flow (Hydraulic gradient-0.1, loading-10 psi) ASTM D-4716 21 gpm / ft of width 21 gpm / ft of width Unobstructed inflow area Pavement side 85% 85% Chemical Resistance N/A Excellent FABRIC PROPERTIES TEST METHOD VaporVent-PS VaporVent-HD Weight ASTM D-3776 4.0 oz. 4.5 oz. Grab Tensile Strength ASTM D-4632 115 lbs. 120 lbs. Puncture Strength ASTM D-3787 70 psi 65 psi Trapezoidal Tear ASTM D-4533 50 lbs. 30 lbs. Mullen Burst Strength ASTM D-3786 240 psi 50 psi Elongation ASTM D-4632 50% 50% EOS (AOS) ASTM D-4751 80 70 Permeability ASTM D-4491 20 cm/sec 21 cm / sec Flow Rate ASTM D-4491 170 gpm / ft2 135 gpm / ft2 UV Stability (500 hours) ASTM D-4355 85% Retained 70% Retained Fungus Resistance ASTM D-G21 No Growth No Growth DIMENSIONAL DATA Thickness 1” Standard Widths 12” Roll Length 150 ft Roll Diameter 7 ft Roll Weight 60 lbs Land Science Technologies, Inc. / 1011 Calle Sombra / Suite 110 / San Clemente / CA / 92673 Ph. 949-366-8000 / F. 949- 366-8090 www.landsciencetech.com Product Data Sheet 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 Technologies™ for proper recommendations. PART 1 – GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the contract, including general and supplementary conditions and Division 1 specification sections, apply to this section. 1.2 SUMMARY A. This section includes the following: 1. Substrate preparation: 2. Vapor intrusion barrier components: 3. Seam sealer and accessories. B. Related Sections: The following sections contain requirements that relate to this section: 1. Division 2 Section “Earthwork”, “Pipe Materials”, “Sub-drainage Systems”, “Gas Collection Systems”: 2. Division 3 Section “Cast-in-Place Concrete” for concrete placement, curing, and finishing: 3. Division 5 Section “Expansion Joint Cover Assemblies”, for expansion-joint covers assemblies and installation. 1.3 PERFORMANCE REQUIREMENTS A. General: Provide a 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. 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 Technologies™ 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 Technologies. 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). 02 56 19.13-2 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. 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 Technologies. 1.8 WARRANTY A. General Warranty: The special warranty specified in this article shall not deprive the owner of other rights the owner may have under other provisions of the contract documents, and shall be in addition to, and run concurrent with, other warranties made by the contractor under requirements of the contract documents. B. Special Warranty: Submit a written warranty signed by vapor intrusion barrier manufacturer agreeing to repair or replace vapor intrusion barrier that does not meet requirements or that does not remain methane gas and/or volatile organic compound vapor tight within the specified warranty period. Warranty does not include failure of vapor intrusion barrier due to failure of substrate prepared and treated according to requirements or formation of new joints and cracks in the attached to structures that exceed 1/16 inch (1.58 mm) in width. 1. Warranty Period: 1 year after date of substantial completion. Longer warranty periods are available upon request to the manufacturer. C. Labor and material warranties are available upon request to the manufacturer. PART 2 – PRODUCTS 2.1 MANUFACTURERS A. Geo-Seal; Land Science Technologies™, San Clemente, CA. (949) 481-8118 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 Technologies. 02 56 19.13-3 B. Fluid applied vapor intrusion barrier physical properties. Geo-Seal CORE – TYPICAL CURED PROPERTIES Geo-Seal CORE Detail – TYPICAL CURED PROPERTIES 2.3 VAPOR INTRUSION BARRIER SHEET 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. Properties Test Method Results Tensile Strength - CORE only ASTM 412 32 psi Tensile Strength - Geo-Seal System ASTM 412 662 psi Elongation ASTM 412 4140% Resistance to Decay ASTM E 154 Section 13 4% Perm Loss Accelerated Aging ASTM G 23 No Effect Moisture Vapor Transmission ASTM E 96 .026 g/ft2/hr Hydrostatic Water Pressure ASTM D 751 26 psi Perm rating ASTM E 96 (US Perms)0.21 Methane transmission rate ASTM D 1434 Passed Adhesion to Concrete & Masonry ASTM C 836 & ASTM C 704 11 lbf./inch Hardness ASTM C 836 80 Crack Bridging ASTM C 836 No Cracking Heat Aging ASTM D 4068 Passed Environmental Stress Cracking ASTM D 1693 Passed Oil Resistance ASTM D543 Passed Soil Burial ASTM D 4068 Passed Low Temp. Flexibility ASTM C 836-00 No Cracking at –20°C Acetic 30% Sulfuric and Hydrochloric 13% Stable 248°F Flexible 13°F Resistance to Acids: Temperature Effect: Properties Test Method Results Tensile Strength ASTM 412 32 psi Elongation ASTM 412 3860% Resistance to Decay ASTM E 154 Section 13 9% Perm Loss Accelerated Aging ASTM G 23 No Effect Moisture Vapor Transmission ASTM E 96 .026 g/ft2/hr Hydrostatic Water Pressure ASTM D 751 28 psi Perm rating (US Perms)ASTM E 96 0.17 Methane transmission rate ASTM D 1434 Passed Adhesion to Concrete & Masonry ASTM C 836 7 lbf./inch Hardness ASTM C 836 85 Crack Bridging ASTM C 836 No Cracking Low Temp. Flexibility ASTM C 836-00 No Cracking at –20ºC Acetic 30% Sulfuric and Hydrochloric 13% Stable 248°F Flexible 13°F Resistance to Acids: Temperature Effect: 02 56 19.13-4 C. Geo-Seal BOND and Geo-Seal BASE physical properties. 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. PART 3 – EXECUTION 3.1 AUXILIARY MATERIALS A. Examine substrates, areas, and conditions under which vapor intrusion barrier will be applied, with installer present, for compliance with requirements. Do not proceed with installation until unsatisfactory conditions have been corrected. 3.2 SUBGRADE SURFACE PREPARATION A. Verify substrate is prepared according to manufacturer’s recommendations. On a horizontal surface, the substrate should be free from material that can potentially puncture the vapor intrusion barrier. Additional protection or cushion layers might be required if the earth or gravel substrate contains too many jagged points and edges that could puncture one or more of the system components. Contact manufacturer to confirm substrate is within manufactures recommendations. B. 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. 4. Mudslabs: The use of a mubslab under the Geo-Seal system is acceptable, contact Land Science Technologies 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 Properties Test Method Results Film Thickness 5 mil Composite Thickness 18 mil Water Vapor Permeability ASTM E 96 0.214 Adhesion to Concrete ASTM D 1970 9.2 lbs/inch2 Dart Impact ASTM D 1790 >1070 gms, method A 594 gms, method B Puncture Properties Tear ASTM B 2582 MD 11,290 gms ASTM B 2582 TD 13,150 gms 02 56 19.13-5 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 TREATMENT OF TERMINATIONS A. Prepare the substrate surface in accordance with Section 3.3 of this document. Concrete surfaces that are not a light trowel, light broom or equivalent finish, will need to be repaired. B. Terminations on horizontal and vertical surfaces should extend 6” onto the termination surface. Job specific conditions may prevent a 6” termination. In these conditions, contact manufacturer for recommendations. C. Apply 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. D. The stated termination process is appropriate for terminating the membrane onto exterior footings, pile caps, interior footings and grade beams. When terminating the membrane to stem walls or vertical surfaces the same process should be used. 3.5 PREPARATIONS AND TREATMENT OF PENETRATIONS A. All pipe penetrations should be securely in place prior to the installation of the 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. 3.6 GEO-SEAL BASE LAYER INSTALLATION A. Install the Geo-Seal BASE layer over substrate material in one direction with six-inch 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. 02 56 19.13-6 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. 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. 02 56 19.13-7 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 Technologies. 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. Geo-Seal® Vapor-Vent SOIL GAS COLLECTION SYSTEM Version 1.2 SECTION 02292 – BROWNFIELD/METHANE GAS CONTROL PART 1 – GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section. 1.2 SUMMARY A. This Section includes the following: 1. Substrate preparation. 2. Strip Composite installation. 3. Strip Composite 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”, “Vapor intrusion 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, strip geocomposite. 2. Strip composite accessories. 1.5 QUALITY ASSURANCE A. Installer Qualifications: Engage an experienced Installer who is certified in writing and approved by Vapor intrusion barrier manufacturer Land Science Technologies 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 Technologies 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. PART 2 – PRODUCTS 2.1 MANUFACTURERS A. Land Science Technologies, San Clemente, CA. 949-366-8000 1. Strip Geocomposite – Geo-Seal Vapor-Vent 2.2 GAS VENT MATERIALS A. Strip Geocomposite – Geo-Seal 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 PS is recommended for sites with inert methane gas and Vapor-Vent HD is recommended for sites with aggressive chlorinated volatile organic or petroleum vapors. Manufactured by Land Science Technologies B. Strip Geocomposite physical properties 2.3 AUXILIARY MATERIALS A. Geo-Seal Vapor-Vent pipe reducers. B. Reinforced Tape. VENT PROPERTIES TEST METHOD VAPOR-VENT PS VAPOR-VENT HD Material Polystyrene HDPE Comprehensive Strength ASTM D-1621 9,000 lbs / ft2 9,200 lbs / ft2 Shear Strength ASTM D-1621 9,500 lbs / ft2 N/A Peel Strength ASTM D-1876 38 lbs / ft 35 lbs / ft Fungus Resistance (core) ASTM G-21 No Growth No Growth In-plane flow (Hydraulic gradient-0.1, loading-10 psi) ASTM D-4716 21 gpm / ft of width 21 gpm / ft of width Unobstructed inflow area Pavement side 85% 85% Chemical Resistance N/A Excellent FABRIC PROPERTIES TEST METHOD VAPOR-VENT-PS VAPOR-VENT-HD Weight ASTM D-3776 4.0 oz. 4.5 oz. Grab Tensile Strength ASTM D-4632 115 lbs. 120 lbs. Puncture Strength ASTM D-3787 70 psi 65 psi Trapezoidal Tear ASTM D-4533 50 lbs. 30 lbs. Mullen Burst Strength ASTM D-3786 240 psi 50 psi Elongation ASTM D-4632 50% 50% EOS (AOS) ASTM D-4751 80 70 Permeability ASTM D-4491 20 cm/sec 21 cm / sec Flow Rate ASTM D-4491 170 gpm / ft2 135 gpm / ft2 UV Stability (500 hours) ASTM D-4355 85% Retained 70% Retained Fungus Resistance ASTM D-G21 No Growth No Growth DIMENSIONAL DATA Thickness 1” 1” Standard Widths 12” 12” Roll Length 150 ft 150 ft Roll Diameter 7 ft 7 ft Roll Weight 60 lbs 60 lbs PART 3 – EXECUTION 3.1 EXAMINATION A. Examine substrates, areas, and conditions under which gas vent system will be installed, with installer present, for compliance with requirements. Do not proceed with installation until unsatisfactory conditions have been corrected. 3.2 SUBSTRATE PREPARATION A. Verify substrate is prepared according to project requirements. 3.3 PREPARATION FOR STRIP COMPOSITE A. Mark the layout of strip geocomposite per layout design developed by engineer. 3.4 STRIP GEOCOMPOSITE INSTALLATION A. Install Geo-Seal 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 Geo-Seal 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 Geo-Seal 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 Geo-Seal Vapor-Vent pipe reducer at both ends of the pipe before connecting the Geo-Seal Vapor-Vent to the pipe reducer. Seal the Geo-Seal Vapor-Vent to the Geo-Seal Vapor-Vent pipe reducer 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 Geo-Seal Vapor-Vent to Geo-Seal Vapor-Vent pipe reducer and seal with fabric reinforced tape. Use Geo-Seal Vapor-Vent pipe reducer 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. © 2010 Land Science Technologies 1 Geo-Seal Quality Control Certified Applicator Authorized installation of Geo-Seal can only be accomplished by one of Land Science Technologies 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: Material Container 60 dry mils 80 dry mils 100 dry mils 55 Gallon Drum 935 ft2 660 ft2 550 ft2 275 Gallon Tote 4,675 ft2 3,300 ft2 2,750 ft2 330 Gallon Tote 5,610 ft2 3960 ft2 3,300 ft2 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.. 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. © 2010 Land Science Technologies 2 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 square foot 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. 1. Create a membrane testing log by obtaining a copy of the foundation plan and then draw a 500 square foot 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. © 2010 Land Science Technologies 3 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 square foot 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. 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 Technologies. Keep the coupon samples for the file, or send them to Land Science Technologies. Smoke Testing This test is intended to visually verify and confirm the proper installation of the Geo-Seal system. Land Science Technologies 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 square feet 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. 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 © 2010 Land Science Technologies 4 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 Technologies 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. 09/08 GEOSEAL CORE MATERIAL SAFETY DATA SHEET LAND SCIENCE TECHNOLOGIES Phone: 949-366-8000 1011 Calle Sombra, Ste., 110 San Clemente, CA 92673 1. PRODUCT IDENTIFICATION 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 2. WARNING STATEMENTS Avoid prolonged or frequent skin contact, as the presence of emulsifying and de-emulsifying agents during application may irritate the skin. 3. PHYSICAL AND CHEMICAL DATA 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\A 4. FIRE PROTECTION Bitumen emulsions are water based products and as such will not burn. In cases of fire in the vicinity of drums, cool with water. 5. REACTIVITY DATA Contact with strong oxidizing agents may create geling and water condensation. 6. HEALTH HAZARD DATA Exposure Limits: Avoid prolonged or frequent skin contact. 7. PHYSIOLOGICAL EFFECTS SUMMARY Acute: Skin irritation and rash Chronic: Dermatitis 8. PRECAUTIONS FOR SAFE HANDLING Avoid contact with eyes. Avoid inhalation. Avoid prolonged or frequent skin contact. Avoid ingestion. 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. 10. EMERGENCY AND FIRST AID 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. 11. SPILL AND DISPOSAL PROCEDURES 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 Technologies 1011 Calle Sombra, Ste., 110 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. 8/03 Geo-Seal BASE and BOND: Material Safety Data Sheet Land Science Technologies PHONE: 949-366-8000 1011 Calle Sombra San Clemente, CA 92673 1. PRODUCT IDENTIFICATION 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 REUQIREMENTS. Carcinogenic Ingredients/OSHA/NTP: NONE IARC: NONE Transportation information: CONTAINS NO HAZARDOUS INGREDIENTS Transportation emergency: Land Science Technologies, 949-366-8000 2. PHYSICAL AND CHEMICAL DATA Appearance and Odor: White Solid Sheet, Odorless Solubility in Water: Negligible, below 0.1% Specific Gravity (Water = 1): 0.90 Percent Volatiles: None Vapor Pressure (mm Hg): Not Determined Boiling Point: Degrees: Not Determined Vapor Density (Air = 1): Not Determined Melting Point: 320° F Evaporation Rate: (Butyl Acetate - 1): N/A Auto Ignition Temperature: Not Determined 3. FIRE AND EXPLOSION DATA 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. 4. REACTIVITY DATA 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 5. HEALTH HAZARD DATA 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 6. PROTECTION AND CONTROL MEASURES 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. 7. EMERGENCY AND FIRST AID 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. 8. SPILL AND DISPOSAL PROCEDURES Spill is not applicable. Material is normally in solid form. Land Science Technologies 949-366-8000 1011 Calle Sombra San Clemente, CA 92673 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. SPECIFICATIONS & DIMENSIONS OF THE AV-3-PVC Net Free Vent Area: Sq. In.: 12 Sq. Ft.: .09 The Aura Vent with a specially designed PVC pipe adapter The Aura Ventilator acts as a rain/snow cap The Aura’s design draws air from the pipe Used to exhaust gases such as Methane/Gasoline Use for radon exhaust systems as a cap to protect the in-line fan from moisture damage Aura design reduces back pressure to fan and optimizes fan cfm AV-3-PVC Aura Pipe Cap CFM Performance Testing using wind only 4 mph 26 5.2 mph 38 7.4 mph 51 9.8 mph 59 11 mph 62 7" 7 3 4 " 4" 3 12 "