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cbsyco. <br /> W/10LESALE <br /> March 31, 2017 <br /> Vicki McCartney , 1 r <br /> Senior RENS m <br /> San Joaquin County Environmental Health Department 9 3 2017 <br /> 1868 E. Hazelton Ave. <br /> Stockton,CA 95205 ENVIRONMENTAL HEALTH <br /> Dear Inspector McCartney, DEPARTMENT <br /> This letter is to call your attention to two items on your March 2.2017 Underground Storage Tank <br /> Program Inspection Report for the Costco gas station located at 1616 E. Hamner Lane in Stockton. <br /> As per our warehouse manager's response letter dated March 8,enclosed for vour convenience, we co <br /> rrected the errors in the site map of our sensors,and replaced the faulty interstitial sensor. <br /> Violation: "Secondary containment not constructed to prevent water intrusion." <br /> We believe that the dampness observed in our tank sumps(between "a quarter cup"and "an eighth cup") <br /> is due to condensation and not water intrusion. Significantly, the liquid sump sensor is in the lowest point <br /> of the sump.so the moisture was not sufficient to trigger a liquid alarm. As such, since it appears the <br /> sensor was placed correctly,was working properly,and did not alarm, it follows there was not a water <br /> intrusion and therefore no violation.According to the report, and confirmed by our tester Alltech Petro, <br /> the sensors were not moved from their current,correct positions. We respectfully request removal of this <br /> violation from our record. <br /> Comment: "When these three spill containers fail they shall be replaced with a spill container that <br /> has a minimum capacity of five gallons..." <br /> The Phil-tite spill buckets at our Stockton gas station are state-approved and EVR-compliant,and have <br /> been in place since the station opened in 2004. We understand that if they fail we have the right to repair <br /> them rather than automatically replace them. If this is not correct and these spill buckets are no longer <br /> approved equipment, please provide us with the regulatory citations so that we may review and change <br /> our procedure if warranted. <br /> Costco cares deeply about our compliance record at all our locations. Please advise if you think I've <br /> misunderstood the report,or iryou can shed additional light on these comments. <br /> Respectfully, <br /> Tim Hurlocker <br /> Director, Fuel Quality& Compliance <br /> Costco Wholesale <br /> C_5) 313-6010 <br /> t h url�,cker'rtcostc��.cnm <br /> Attachments: <br /> March 2 Inspection Report <br /> March 8 Costco response letter <br /> 999 Lake Drive • Issaquah, WA 98027 • 425/313-8100 • Fax 425/427.7133 • www.cosko.com <br />