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SWRCB, January 2002 4. TANK ANNULAR TESTING Page 2_ of _7_ Test Method Developed By: ❑ Tank Manufacturer ® Industry Standard ❑ Professional Engineer ❑ Other (Spec) Test Method Used: ❑ Pressure ❑ Other (Specify) ® Vacuum ❑ Hydrostatic Test Equipment Used: 0 - 30" VACUUM GAUGES Tank # 87 Is Tank Exempt From Testing?' ❑ Yes ® No Tank # 91 & DSL ❑ Yes ® No Equipment Resolution: 0.002" Tank # Tank # ❑ Yes ❑ No ❑ Yes ❑ No Tank Capacity: 12,000 12,000 Tank Material: D.W. STEEL D.W. STEEL Tank Manufacturer: MODERN MODERN Product Stored: 87 91 & DIESEL #2 Wait time between applying pressure/vacuum/water and stest: 15 MIN 15 MIN Test Start Time: 8:30 AM 8:30 AM Initial Reading (RI): -10" -10" Test End Time: 9:30 AM 9:30 AM Final Reading (RF): -10" -10" Test Duration: 1 HR 1 HR Change in Reading (RF -RI): 0" 0" Pass/Fail Threshold or Criteria: NO LOSS NO LOSS Test Result: -Z Pass ❑ Fail Pass ❑ Fail ❑ Pass; ❑ Fail ❑ Pass ❑ )Fail Was sensor removed for testing? ® Yes ❑ No [INA ®Yes [-]No ❑ NA ❑ Yes [:]No ❑ NA ❑ Yes []No ❑ NA Was sensor properly replaced and verified functional after testln ? ®Yes [I No El NA ®Yes El No ❑ NA ❑Yes ❑ No [--INA ❑Yes ❑ No [:INA Comments — (include information on repairs made prior to testing, and recommended follow-up for failed tests) 91 & DIESEL TANKS ARE TWO 6,000 GALLON -- DOUBLE COMPARTMENT SINGLE TANK WITH ONE SHARED ANNULAR SPACE. ' 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))