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Page 1 of _8_ 7. UNDER -DISPENSER CONTAINMENT (UDC) TESTING Test Method Developed By: ❑ UDC Manufacturer ❑ Industry Standard ® Professional Engineer ❑ Other (Specify) Test Method Used: ❑ Pressure ❑ Vacuum ®Hydrostatic ❑ Other (Specify) Test Equipment Used: Caldwell Level Indicator Equipment Resolution: .002 UDC #1-2 UDC #34 UDC #5-6 UDC #7-8 UDC Manufacturer: opw opw opw opw UDC Material: fiberglass fiberglass fiberglass fiberglass UDC Depth: 30 30 30 30 Height from UDC Bottom to Top of Highest Piping Penetration: 12 12 12 12 Height from UDC Bottom to Lowest Electrical Penetration: 14 14 14 14 Condition of UDC prior to testing: clean clean clean clean Portion of UDC Tested 2" above product 2" above product 2" above product 2" above product Does turbine shut down when UDC sensor detects liquid (both product and water)?* ®Yes❑ No ® NA ®Yes❑ No ❑ NA ®Yes❑ No ❑ NA ®Yes❑ No ❑ NA Turbine shutdown response time ®Yes❑ No ❑ NA ®Yes❑ No ❑NA ®Yes[—] No ❑ NA ®Yes❑ No ❑ NA Is system programmed for fail- safe shutdown?* ®yes❑ No ❑ NA ®Yes❑ No ❑ NA ®Yes❑ No ❑ NA ®Yes❑ No ❑ NA Was fail-safe verified to be operational?* yes yes yes yes Wait time between applying pressure/vacuum/water and starting test 15mins 15mins 15mins 15mins Test Start Time: 30mins 30mins 30mins 30mins Initial Reading (Rj): first circle first circle first circle first circle Test End Time: Omins Omins Omins Omins Final Reading (RF): no change no change no change no change Test Duration: 30mins 30mins 30mins 30mins Change in Reading (RF -R,): 0 0 0 0 Pass/Fail Threshold or Criteria: .005/30mins .005/30mins .005/30mins .005/60mins Test Result: 0 Pass ❑ Fail 0 Pass ❑ Fail ® Pass ❑ Fail ® Pass E]Fail Was sensor removed for testing? ®Yes❑ No ❑ NA ®Yes❑ No ❑ NA ®Yes❑ No ❑ NA ®Yes❑ No ❑ NA Was sensor properly replaced and verified functional after testing? ®Yes❑ No ❑ NA ®Yes❑ No ❑ NA ®Yes❑ No ❑ NA ®Yes❑ No ❑ NA Comments — (include information on repairs made prior to testing, and recommended follow-up for failed tests) All sensors are tested during annual monitoring certification. 1 If the entire depth of the UDC is not tested, specify how much was tested. If the answer to any of the questions indicated with an asterisk (*) is "NO" or "NA", the entire UDC must be tested.