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5.3 Urethane Foam When using environ flexible entry boots in either high water table or sand backfill conditions, Environ recommends applying an expanding urethane foam to the outside of the boots to help prevent excessive pressure from distorting the boot. WARNING: Read the instructions below thoroughly before applying foam. Before commencing work, obtain a can of Polycel® Insulating Foam or equivalent. Be sure to read and follow all instructions and precautions on the foam canister label. A clean dry cloth will also be needed for proper application of the foam. 5.3.1 Step 1 Locate and install the flexible entry boot according to the instructions provided with each boot. Be sure all pipe connections have been made and pipe is positioned properly. Clean outside of entry boot with water as shown. Remove any debris from surface. Allow to dry. 5.3.2 Step 2 Apply expanding urethane foam around the boot as shown. Observe all precautions and follow directions on foam canister label. Proper application will leave approximately 1/2" of foam beyond surface of boot. 5.3.3 Step 3 Allow foam to set and dry for approximately 2 hours (or the full recommended cure time as indicated on foam canister label) before backfilling. 6. GUIDE SPECIFICATIONS The following specifications are provided as general guidelines to specify under sump entry seals for piping and conduit. 6.1 Short Form The contractor shall provide liquid tight seals, as manufactured by Environ Products Inc., for sealing of all pipe and conduit entries into the containment sumps. Pipe and conduit entry seals shall be installed in accordance with manufacturers current installation instructions. 0 6.2 Long Form 6.2.1 Design Pipe and conduit entry seals shall be of such a design to permit angled pipe and conduit entries up to 15° off the centerline in any direction. The entry boot shall attach and seal to the wall of the sump by means of a corrosion resistant compression ring, studs and nuts. 6.2.2 Product Compatibility All components of the pipe and conduit entry seals shall be chemically compatible with the products to be stored and with chemicals found naturally in the ground environment. 6.2.3 Corrosion Resistance All components of the pipe and conduit entry seals which come in contact with the ground environment shall be made of non -corrosive material or encapsulated by materials which prevent corrosion. All metallic components not exposed to the ground environment shall be made of either stainless steel or have a protective coating to prevent corrosion. 6.2.4 Structural Integrity Pipe and conduit entry seals shall be designed and constructed of materials strong enough for its intended use. The seals shall not crack, tear or break due to ground movement or from backfill and high ground water pressures up to 6 feet (1.8 m). 6.2.5 Liquid Tightness Pipe and conduit entry seals shall be of such a design to prevent outside ground water from coming into the container and prevent any leaking product originating from within the sump from escaping into the underground environment. 6.2.6 UL® Testing Pipe and conduit entry seals shall be tested and listed by Underwriters Laboratories to meet standard testing procedure for petroleum transport accessories and are listed under file #MH17938 and MH19391. These tests confirm the compatibility of the specially formulated Buna-N Rubber compound in typical ground environments as well as exposure to petroleum and alcohol based fuels.