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COSTCOO <br /> �WE�OLESME <br /> March 31 , 2017 <br /> Vicki McCartney <br /> Senior REFIS <br /> San Joaquin County Environmental Health Department <br /> 1868 E. Hazelton Ave . <br /> Stockton , CA 95205 <br /> Dear Inspector McCartney, <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 . Hammer Lane in Stockton . <br /> As per our warehouse manager's response letter dated March 8 , enclosed for your 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 intrn <br /> usio . " <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 tlu•ee 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 tills 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 ifwarranted . <br /> Costco cares deeply about our compliance record at all our locations . Please advise if you think I ' ve <br /> misunderstood the report, or if you can shed additional light on these comments . <br /> Respectfully, <br /> Tim Hurlocker <br /> Director, fuel Quality & Compliance <br /> Costco Wholesale <br /> (425 ) .1 13 -00 10 <br /> thurlockelo '( 1 CWIIC0 . 00IlI <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. costco . com <br /> I <br />