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bp BP West Coast Products LLC <br /> 4519 Grandview Rd. <br /> Blaine,WA 98230 <br /> 0 Phone:(360)371-8111 <br /> Fax: (360)371-1684 <br /> Email: sarah.samuels@bp.com <br /> March 28, 2013 <br /> Inspector Thuy Tran <br /> San Joaquin County <br /> Environmental Health Department <br /> 1868 East Hazelton Avenue <br /> Stockton, CA 95205 <br /> Subject: Underground Storage Tank(UST) Program Inspection Report <br /> Facility#06080 <br /> 85 E. Louise Ave. <br /> Lathrop, CA 95330 <br /> Dear Inspector Tran, <br /> This letter is in response to the Underground Storage Tank(UST) Program Inspection Report("Report") <br /> dated February 28, 2013, which was issued to the subject facility. Per our phone conversation on <br /> March 27, 2013, although work is ongoing to address the issues noted in said Report, we are submitting <br /> this status update regarding our progress as follows: <br /> 402. A liquid, most likely fuel,was found at the diesel STP sump and the 91 fill sump. In <br /> the diesel STP sump,there was liquid at both sides at the bottom of the saddle totaling <br /> approximately a quart. In the 91 fill sump,approximately 2 cups of liquid was found at <br /> one end of the saddle where the liquid detection sensor sits. There was insufficient <br /> amount of liquid to trigger liquid detection sensors for either product. All primary <br /> containment must be impervious to the liquid and vapor of the substance contained. <br /> Immediately discontinue use of failed piping and have a properly licensed,trained,and <br /> certified contractor replace or repair the failed piping under permit and inspection of the <br /> EHD. On March 1St, 11th, and 14th, 2013, BP repair vendor, Gettler-Ryan, visited the subject site <br /> to investigate the above-referenced issues noted in the February 28, 2013 Report, employing <br /> various methods to identify the source of the liquid initially found in both the Diesel STP and 91 <br /> fill sumps, and correct the issue. <br /> • On March 1St, the sumps were cleaned and inspected and no leaks were detected. A <br /> copy of the work order and pictures taken while on site are attached for your review <br /> and records. <br /> • On March 11th, the sumps were again cleaned and inspected, as well as all piping in the <br /> Diesel STP sump, and no leaks were detected. Rags were placed in both sumps to see <br /> if any sources of liquid could be determined. In addition, the site's alarm history was <br /> checked and no alarms were noted since the February 281h Monitoring Certification, <br /> during which all sensors and leak detectors were tested and passed. A copy of both <br />