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Underground Storage Tank Overfill Prevention Equipment Inspection Report 6. OVERFILL PREVENTION EQUIPMENT DETAILS Tank ID (one OPE per column) T-6 Waste Oil Are both vent and tank riser piping ❑ Yes ❑ Yes ❑ Yes ❑ Yes secondarily contained? IR No ❑ No ❑ No ❑ No OPE Model 71SO-4 What is the OPE response when activated? 0 Shut off ❑ Shut off ❑ Shut off ❑ Shut off (Check all that apply.) Flow Flow Flow Flow ❑Restricts ❑Restricts ❑Restricts ❑Restricts Flow Flow Flow Flow ❑ Audible ❑ Audible ❑ Audible ❑ Audible Alarm Alarm Alarm Alarm ❑ Visual ❑ Visual ❑ Visual ❑ Visual Alarm Alarm Alarm Alarm Are flow restrictors installed on vent piping ❑ Yes* ❑ Yes* ❑ Yes* ❑ Yes* that may interfere with the OPE operation? ® No ❑ No ❑ No ❑ No At what level in the tank is the OPE set to 81.875 activate? (Inches from bottom of tank) What is the percent capacity of the tank at 94.7 which the OPE activates? Is the OPE in proper operating condition to IR Yes ❑ Yes ❑ Yes ❑ Yes respond when the stored substance ❑ No ❑ No ❑ No ❑ No reaches the designated regulatory level? 7. SUMMARY OF TESTING RESULTS OPE Inspection Results 0 Pass ❑ Pass ❑ Pass ❑ Pass ❑ Fail ❑ Fail ❑ Fail ❑ Fail 8. COMMENTS Describe all results marked "Fail"and each proposed remedy. Re-inspection of T-6 Waste Oil tank only. For all other tanks,see inspection results dated 7-20-21. Initial inspection results from 7/20/21 (revised with correct tank charts)indicated T-6 OPV failed due to shut off height too high in tank. Measurements taken today indicate that the initial calculations were incorrect, due to dimension B, (sealing lip to tank bottom), being 3.5" higher than actual measurement of 156.5". (Overfill prevention valve was scheduled to be replaced if setting was high, but deemed unnecessary due to discovery of measurement error). Overfill Prevention valve was checked for function, and found operable.Valve passes inspection. A ball float was found in the vent riser next to spill container. In-tank measurements show this is set at 96.6%,2.625" higher than overfill valve setting,and will not interfere with overfill prevention valve operation. Ball float left in place. Owens Corning tank, installed 1989. CERS lists mechanical overfill valves as primary means of overfill prevention. Inspector Carol Presto, San Joaquin County E.H.D. present for inspection. * Mark here if: ❑ Flow restrictors interfere with overfill prevention and equipment repairs required. Additional copies of this page may be attached. Attach tank chart(s), measurements, calculations, and In-Tank Setup report(s) Page 2 of 2