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SWRCB, January 2002 C 4. TANK ANNULAR TESTING Page of Test Method Developed By: x Tank Manufacturer ❑ Industry Standard ❑ Professional Engineer ❑ Other (Specify) Test Method Used: ❑ Pressure ❑ Other (Spec) x Vacuum ❑ Hydrostatic Test Equipment Used: Dwyer Manometer Equipment Resolution: +/- 2% �Tank# 1 Tank Tank# Tank # Is Tank Exempt From Testing? ❑ Yes x No ❑ Yes ❑ No ❑ Yes ❑ No ❑ Yes ❑ No Tank Capacity: 10,000 Tank Material: Steel Tank Manufacturer: Unknown Product Stored: Diesel Wait time between applying pressure/vacuum/water and starting test: 30 min 30 min 30 min 30 min Test Start Time: 9:17 Initial Reading (Rj): 5.10 Test End Time: 10:17 Final Reading (RF): 4.49 Test Duration: 1 hour 1 hour 1 hour 1 hour Change in Reading (RF -RI): .59 Pass/Fail Threshold or Criteria: No less than 1" No less than 1" No less than 1" No less than 1" Test Result: < x Pass ❑ Fail ❑ Pass ❑ Fail ❑ Pass ❑ Fall ❑ Pass ❑ Fail Was sensor removed for testing? x Yes ❑ No ❑ NA x Yes ❑ No [INA x Yes ❑ No ❑ NA x Yes ❑ No ❑ NA Was sensor properly replaced and verified functional after testing? x Yes El 11 NA x Yes ❑ No ❑ NA x Yes El No 11 NA x Yes 11 No ❑ NA Comments — (include information on repairs made prior to testing, and recommended follow-up for failed tests) Annular space test performed after spill bucket test. 5.10 Start 4.9810 min 4.87 20 min 4.76 30 min 4.66 40 min 4.58 50 min 4.49 60 min ' Secondary containment systems where the continuous monitoring automatically monitors both the primary and secondary containment, such as systems that are hydrostatically monitored or under constant vacuum, are exempt from periodic containment testing. {California Code of Regulations, Title 23, Section 2637(a)(6))