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CALIFORNIA [RICEME U <br />1 ' APR 2 2 2,009 <br />2224 MANTHEY RD. ENVIRONMENT HEALTH <br />STOCKTON, CA 95206 PERMIT/SERVICES <br />PHONE #: (209) 462-7621 FAX: (209) 462-7621 <br />April 20, 2009 <br />600 E. Main Street <br />Stockton, Ca 95202-3029 <br />Dear Muniappa Naidu, REHS <br />During the monitoring test, we found out that there were a small amount of water in 87octane <br />sump but the amount was not large enough to trigger the alarm. I have investigated the problem <br />by using color dye to trace any leaks. I found out the dye was coming in from the ground level of <br />the sump when the silicone is not perfectly dry or when it is not perfectly sealed tight. To ensure <br />that no water can get in, I sealed two layers of silicone which will keep the water out. <br />The water that was withdrawn from the sump was taken to CLEAN HARBOR to dump as <br />hazardous waste. I have included the manifest with this letter. Any questions please contact me <br />at 209-462-7621. <br />Thanks for y ur time, <br />Thien Phan - <br />Partner�wrt�r <br />