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MISC\TANKS . PEC Page 10 of 22 1. ACCEPTABLE "SOAPS" : "Soaping" the tank and fittings during the test is to be done using a small garden-type hand- pressurized spray unit. The test soap shall be a high foaming "soap" that bubbles easily if in contact with an air leak in the tank but won't bubble due to dispensing from the pressure applicator. Acceptable soaps are: "Seam Test Concentrate" "Amway Loc High Soap" "#7006 Southbend Leak Detector" or approved equals 2 . 4 DOUBLE WALL TANK INSTALLATION A. HANDLING: The Contractor is responsible for off-loading the tanks from the delivery vehicle. A crane or backhoe of sufficient lifting capacity must be used. The weight of the double wall FRP tank is approximately 5000-6000 lbs. B. PRE-INSTALLATION PRESSURE TEST, AIR: 1. PRIMARY (INNER) TANK TEST: Tighten all tank fittings. Locate a pressure gauge in the vent/monitor fitting in the secondary (outer) tank. Locate a second pressure gauge at a fitting in the manyway and connect the air pressure hose to this same fitting. Pressurize the primary (inner) tank to a minimum 4 psi, maximum 5 psi. Monitor the pressure gauges a minimum of 1/2 hour. 2 . SECONDARY (OUTER) TANK TEST: Leave the pressure on the primary tank. Using a flexible air hose manifold, connect the air pressure hose from the primary tank to the secondary tank. This manifold hose should be connected to the vent/monitor fitting that does not contain the air pressure gauge. Close the valve to the primary tank and disconnect the air supply. Pressurize the secondary tank by opening the valve in the manifold system. Soap the entire tank and all fittings. C. POST-INSTALLATION PRESSURE TEST, AIR: Procedures for the pre- installation pressure test shall be repeated. This test may be performed with or without piping and fittings attached. The secondary (outer-) tank test must be performed a minimum of 1/2 hour and all fittings shall be soaped. D. BALLASTING: Only the primary (inner) tank shall be used when ballasting the tank. Never fill the secondary (outer) tank with a fluid. E. PRIMING: Manway lids shall be primed with Polyken 927 . F. BURIAL DEPTH: The burial depth from the top of the tank to ground level shall be a minimum of 4 feet and a maximum of 7 feet. The fittings in the manyway are approximately 5-6 inches off the top of the tank. This shall be considered for the slope of the piping and thus may affect the tank burial depth.