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• Tank Annular Space. <br /> } <br /> For tanks less than 20,000 gallons capacity, apply a vacuum of 10"mercury to annular space. <br /> After establishing a stable vacuum, maintain this vacuum for 60 minutes. At the end of the <br /> test period, if the vacuum reading has not changed from the established test vacuum, the test <br /> is complete and has achieved a"pass". <br /> For tanks greater than or equal to 20,000 gallons capacity, apply a vacuum of 10"mercury to <br /> annular space. After establishing a stable vacuum,maintain this vacuum for 120 minutes. At <br /> the end of the test period, if the vacuum reading has not changed from the established test <br /> vacuum, the test is complete and has achieved a"pass". <br /> If the tank does not maintain the test vacuum, the contractor may re-test the annular space. <br /> If, after the second test the tank does not achieve a "pass", the secondary containment must <br /> be considered not liquid tight. Repairs may be made by the tank manufacturer or authorized <br /> representative per the requirements of the local CUPA. <br /> • Product Piping Secondary Containment. <br /> An inert gas shall be used. The secondary containment shall be made airtight with either the <br /> rubber test boot or fiberglass test fitting installed at time of installation. If the test boot is <br /> missing or damaged, an approved replacement test boot or fiberglass test fitting may be <br /> installed. <br /> Pressurize secondary containment piping to 5 psig and allow to stabilize for 10 minutes. <br /> Maintain test pressure of 5 psig for 60 minutes. At the end of the test period, if the pressure <br /> reading has not changed from the established test pressure, the test is complete and has <br /> achieved a"pass". <br /> If the piping does not maintain the test pressure, the contractor may tighten clamps and <br /> fittings, if necessary, and re-test the piping. If, after the second test, the piping does not <br /> achieve a "pass", the secondary containment must be considered mot liquid tight. Repairs <br /> may be made by the piping manufacturer or authorized representative per the requirements of <br /> the local CUPA. <br /> • Containment Sumps and Under Dispenser Containment. <br /> The containment sump shall be free of dirt, debris and residual petroleum product. Place test <br /> fluid in the sump a minimum of 2-inches above the highest piping penetration. Piping shall <br /> include primary/secondary product piping, vent piping, vapor recovery piping and siphon <br /> piping. It is recommended to place test fluid in the sump a minimum of 2-inches above the <br /> highest penetration, including all electrical penetrations. <br /> After test fluid has stabilized for 30 minutes, the liquid level shall be measured using test <br /> equipment third party tested to below .0007-inches. The test period shall consist of two 15- <br /> Page 2 of 3 <br />