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Duncan Compliance: Dba, R&D Compliance Testing Secondary Containment/SB989 (707) 621-0378 Line/Leak Detectors Tank Monitor Certification California UST Service Technician 45246802 -UT California UST Designated Operator #5246802 -UT CSLB C6 1/D40 License # 1036490 Secondary Containment Test Procedure Used To Determine Test Results Tank Secondary Containment —The Service Technician will test and certify using methods developed and recommended by the Tank Manufacture, Industry Standard or Professional Engineer. Test procedure recommended and used is a vacuum slowly applied to establish a stable vacuum of 6" to 10" inches Hg. for one hour using a Standard Industry Vacuum Gauge with a range of -0" to -30" measured in Hg./inches of mercury. The test is completed at the end of one hour/Tanks with a Volume of 20,000 Gallons or less, and 2 hours for Tanks that exceed a Volume of 20,000 Gallons, if the vacuum reading does not decrease below the established vacuum or the Threshold Criteria recommended by the Tank Manufacture, Industry Standard, or Professional Engineer. Product Piping Containment/Vent Piping Containment/VaporRecoyery Piping Containment —The Service Technician will test and certify using methods developed and recommended by the Piping Manufacture, Bravo System UDC Manufacture, Industry Standard or Professional Engineer. Test procedure recommended and used is, Nitrogen Gas pressure, slowly applied to establish a stable pressure of 5 psi for one hour or 3 Psi for 1 hour using a Standard Industry Pressure Gauge with a range of 0 to 15 measured in Psi/Pounds per square inch. If the Product Piping is Fiberglass and the UDC's are a Bravo System Manufacture, Model B2000, constructed of Coated Steel, with an O Ring Seal at Primary/Secondary Product Piping Interface at end of Product Piping Run at UDC's then, Bravo System Manufacture recommends a pressure range of 2 Psi to 3 Psi maximum applied test pressure. The test is completed at the end of one hour if the pressure reading does not decrease below the established pressure or the Threshold Criteria recommended by the Piping Manufacture, Bravo System UDC Manufacture, Industry Standard or Professional Engineer. Turbine/Product Piping Sump/Fill Riser Sump/Remote Fill Sump/Transition/Vent Sump/Spill Container/Misc. Sump connected to UST System —The Service Technician will test and certify using methods developed and recommended by the Sump Manufacture, Industry Standard or Professional Engineer. The test procedure recommended and used is Hydrostatic with a level change indicator that has been developed to indicate a standard leak rate of 1/4 inch in 24 hours within 30 minutes, and has been examined and reviewed by a third party Professional Engineer. The Service Technician will perform all Hydrostatic Testing using the Caldwell Systems Level