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SWRCB, January 2002 7. UNDER -DISPENSER CONTAINMENT (UDC) TESTING Page of Test Method Developed By: ❑ UDC Manufacturer ❑ Industry Standard X Professional Engineer ❑ Other (Spec) Test Method Used: ❑ Pressure ❑ Vacuum X Hydrostatic ❑ Other (Specify) Test Equipment Used: Caldwell Level Change Indicator Equipment Resolution: .002 UDC #al&2 UDC # UDC # UDC # UDC Manufacturer: Western Fiberglass UDC Material: Fiberglass UDC Depth: 28" Height from UDC Bottom to Top of Highest Piping Penetration: 10" Height from UDC Bottom to Lowest Electrical Penetration: 6" Condition of UDC prior to testing: Dry Portion of UDC Tested' Water Level 14" Does turbine shut down when UDC sensor detects liquid (both product and water)?* Yes Turbine shutdown response time Not Alarmed Is system programmed for fail- safe shutdown?* Yes Was fail-safe verified to be operational?* No Wait time between applying water and starting test 5 Minutes Test Start Time: 3:27 Initial Reading (RI): .001 Test End Time: 3:57 Final Reading (RF): .001 Test Duration: 30 Minutes Change in Reading (RF-Ri): 0 Pass/Fail Threshold or Criteria: .005/30 Minutes Test Result: Pass Was sensor removed for testing? Yes Was sensor properly replaced and verified functional after testing? Yes Comments — (include information on repairs made prior to testing, and recommended follow-up for failed tests) Initial loss due to Seam on Test Boot on Regular 87 Secondary Pipe. Removed Test Boot in UDC. Secured Test Boot on Secondary Pipe in STP Piping Sump, and filled UDC to test level. This method allows Test Fluid to fill UDC and Secondary Pipe simultaneously. Secondary Pipe Test Boot at STP Piping Sump opened at end of testing to allow all Test Fluid to drain. ' If the entire depth of the UDC is not tested, specify how much was tested. If the answer to qny of the questions indicated with an asterisk (*) is "NO" or "NA", the entire UDC must be tested. (See SWRCB LG -160)