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SWRCB, January 2002 E E Page _1_ of 2_ 4. TANK ANNULAR TESTING Test Method Developed By: Tank Manufacturer X Industry Standard Professional Engineer Other (Spec) Test Method Used: Pressure X Vacuum Hydrostatic Other (Spec) Test Equipment Used: Vacuum Gauge Equipment Resolution: 1" TTankxempt From Testing?' Tank # 87 -Oct Yes X No Tank # Yes 77Tank No # Yes No Tank # Yes No acity: 12,000 Tank Material: Steel Tank Manufacturer: Trusco Product Stored: Regular Unleaded Wait time between applying pressure/vacuum/water and starting test: 30 min Test Start Time: 10:00 am Initial Reading (RI): 20" Test End Time: 11:00 am Final Reading (RF): 22" Test Duration: 1 Hour Change in Reading (RF-&): 2" Vacuum Increase Pass/Fail Threshold or Criteria: Teat Result: XPass - ❑ Fail 0 'Pan ❑ Fait ❑ Pan ❑ Fail ❑ Pus ❑]Fail Was sensor removed for testing? X Yes NA No Yes No NA Yes No NA Yes No NA Was sensor properly replaced and verified functional after testin ? X Yes No NA Yes No NA Yes No NA Yes No NA Comments — (include information on repairs made prior to testinx, and recommended follow-up for failed tests Test was required as part of repair permit issued by San Joaquin Co. Heath. Initial call was for repairs to Secondary containment sump reducer that had failed over time. Secondary containment test is required Anytime concrete is broken to make repairs to a tank. Initial secondary test failed, we applied 2psi pressure To secondary annular space and located leak at the Regular fill riser bungfftberglass containment joint. Vacuum was applied to secondary annular space and sealant was applied to the failed joint. ' Secondary containment systems where the continuous monitoring automatically monitors loth 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))