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Duncan Compliance: Dba, R&D Compliance Testing_______________ <br />Secondary Containment/SB989 (707) 621-0378 <br />Line/Leak Detectors <br />Tank Monitor Certification <br />California UST Designated Operator #5246802-UC <br />California UST Service Technician #5246802-UT <br />CSLB License #1036490 <br /> <br /> <br /> <br />Secondary Containment Test Procedure Used To Determine Test Results <br /> <br /> <br />Tank Secondary Containment – The Service Technician will test and certify using <br />methods developed and recommended by the Tank Manufacture, Industry Standard or <br />Professional Engineer. Test procedure recommended and used is a vacuum slowly <br />applied to establish a stable vacuum of 6” to 10” inches Hg. for one hour using a <br />Standard Industry Vacuum Gauge with a range of -0” to -30” measured in Hg./inches of <br />mercury. The test is completed at the end of one hour/Tanks with a Volume of 20,000 <br />Gallons or less, and 2 hours for Tanks that exceed a Volume of 20,000 Gallons, if the <br />vacuum reading does not decrease below the established vacuum or the Threshold <br />Criteria recommended by the Tank Manufacture, Industry Standard, or Professional <br />Engineer. <br /> <br />Product Piping Containment/Vent Piping Containment/Vapor Recovery Piping <br />Containment – The Service Technician will test and certify using methods developed <br />and recommended by the Piping Manufacture, Bravo System UDC Manufacture, Industry <br />Standard or Professional Engineer. Test procedure recommended and used is, Nitrogen <br />Gas pressure, slowly applied to establish a stable pressure of 5 psi for one hour or 3 Psi <br />for 1 hour using a Standard Industry Pressure Gauge with a range of 0 to 15 measured in <br />Psi/Pounds per square inch. If the Product Piping is Fiberglass and the UDC’s are a <br />Bravo System Manufacture, Model B2000, constructed of Coated Steel, with an O Ring <br />Seal at Primary/Secondary Product Piping Interface at end of Product Piping Run at <br />UDC’s then, Bravo System Manufacture recommends a pressure range of 2 Psi to 3 Psi <br />maximum applied test pressure. The test is completed at the end of one hour if the <br />pressure reading does not decrease below the established pressure or the Threshold <br />Criteria recommended by the Piping Manufacture, Bravo System UDC Manufacture, <br />Industry Standard or Professional Engineer. <br /> <br />Turbine/Product Piping Sump/Fill Riser Sump/Remote Fill Sump/Transition/Vent <br />Sump/Spill Container/Misc. Sump connected to UST System – The Service <br />Technician will test and certify using methods developed and recommended by the Sump <br />Manufacture, Industry Standard or Professional Engineer. The test procedure <br />recommended and used is Hydrostatic with a level change indicator that has been <br />developed to indicate a standard leak rate of ¼ inch in 24 hours within 30 minutes, and <br />has been examined and reviewed by a third party Professional Engineer. The Service <br />Technician will perform all Hydrostatic Testing using the Caldwell Systems Level