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San Joaquin County Environmental Health Department 1868 East Hazelton Avenue, Stockton, California 95205_6232 Telephone: (209) 468-3420 Fax: (209) 468_3433 Web: w�w.s ov.or /ehd Undergr©port Storage Tank Program Inspection Re Facility Name: p Costco Wholesale #1031 Facility Address; 2440 Daniels ST, Manteca Eaate: August 18, 2016 Item # SUMMARY OF VIOLATIONS (CLASS i, CLASS li, or MiNOR , Notice to Comply) Remar CCR 2715(c) Designated operator did not inspect all required fitems and/or the inspection reports The designated operator failed to document all the alarms from the attached alarm history on the September 2016 designated operator monthly inspection report and failed to check that they were responded o not completed. missing alarms include: S11 (87A Vent Vacuum) Communication alarm - 8116116 appropriately, The During the monthly inspection, the designated operator shall review the alarm history that each alarm was documented and responded to appropriately, and attach a copy of the alarm history with documentation taken in response to any alarms to the monthly report, Ensure that designated operators performing for the previous month, check monthly inspections at this facility are including all of the required information on the reports. This is a minor violation. 304 HSC 25290.1(d) Monitoring system not maintained to detect entry into secondary containment According to the maintenance records on site, the L9 (87B Fill) sensor went into sensor out alarm on 10/22004). 9/15 technician who responded to the alarm noted that the sensor would not go into a fuel alarm e(after Jul lipped down. A service request application was submitted on 1112115. A permit a The even when flipped upside The maintenance records on site indicate the sensor was not replaced until 1120/16, on the day of functionality p pproval letter was issued dated 11119115. verification testing with an EHD inspector. The 876 fill sensor was incapable of detecting a leak from 10/2911until 1/20/16. The continuous monitoring system shall be maintained to detect the entry of the liquid or vapor phase of the hazardous substance stored in the primary containment into the secondary containment and to detect water intrusion into the secondary containment. The sensor has been replaced and retested. Ensure that all sensors are maintained to detect the entry of the liquid or vapor phase of the hazardous substance stored in the primary containment into the secondary containment and to detect water intrusion into the secondary containment at all times. This is a Class ll violation. 306 CCR 2630(4) Monitoring equipment is not installed or maintained to detect a leak at the earliest opportunity. The brine sensors monitoring the annular spaces of all eight UDCs were found not located at the top of the UDCs to detect a leak at the earliest opportunity. The brine level in all of the UDCs was low and the sensors were located too low to have detected the drop in brine level. in some UDCs, the brine level was not high enough to reach the site gauge. Monitoring equipment shall be maintained to be able to detect a leak at the earliest possible opportunity. The brine was topped off and all sensors were relocated to the top of the UDC annular level by the service technician. Ensure that all monitoring equipment is maintained to detect a leak at the earliest opportunity, i rfrrs w -7s corrected on site. This is a Class 11 violation. Page 4 of 6