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PUBLIC :.IEALTH SERV`;ES <br /> a� <br /> SAN JOAQUIN COL?VTY � 1 -•;� <br /> ENVIRONMEN'T'AL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer " �. <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 209/468-3420 =-. u <br /> JUL 2 8 1997 <br /> DAVID AND PAMELA WAR-MAN <br /> 2468 COUNTRY CLUB BLVD <br /> STOCKTON CA 95204 <br /> Re: Shell Service Station Site Code: 1070 <br /> 2575 Country Club Blvd <br /> Stockton CA 95204 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has recently <br /> received fazed copies of the laboratory report on the water sample collected from your well and has <br /> prepared a summary of the results of the July 16, 1997 sampling event. <br /> Sample ID 7 Date Collected IVITBE (8020/8260) BTEC TPH-gasoline <br /> "I-bailer of well 7/16/97 5.9 ppb/ 8.1 ppb <0.5 ppb <50.0 ppb <br /> m2-faucet 7/16/97 <2.5 ppb <0.5 ppb <50.0 ppb <br /> Note: MTBE-Methyl Tertiary Butyl Ether(EPA Method 3020:GC-PID/EPA Method 3260:GC/MS) <br /> BTEX-Benzene,Toluene,Ethylberzene.and Xylene <br /> ppb-parts per billion-µg/I <br /> Currently, the State of California Department of Health Services Office of Drinking Water has <br /> established an interim action level of 35 parrs per billions (ppb) and the United States Environmental <br /> Protection Agency has established a draft standard of 70 ppb as a drinking water standard for public <br /> water systems for methyl tertiary butyl ether(bITBE). However, taste and odor thresholds have been <br /> reported at 15 -45 ppb. Information is still being evaluated to determine final standards regarding the <br /> establishment of human health maximum contaminant levels. Information regarding MTBE's effects on <br /> plant life has not been widely distributed, if it is available. <br /> PHS/EHD has directed Shell Oil to confirm these results and to include your well in their quarterly <br /> sampling program, if you grant permission. Please contact Mary Meays at(209) 468-0337, if,you have <br /> any questions. <br /> Thank you for your cooperation. <br /> Donna Heran, Director,REHS <br /> /Environmental Health Division <br /> Mary Meays, Senior REHS Margaret ono, REHS <br /> Site Mitigation Unit Supervisor <br /> cc: Elizabeth Thayer, CVRWQCB cc: Steve Gurierrez, SJC Supervisor <br /> cc: Alex Perez, Shell Oil Company cc: Joe Neelev, Enviros <br /> .a Division of San Joaquin County Health Cate Services <br />