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PUBLN], HEALTH SERfICES <br /> SAN JOAQUIN COUNTY <br /> JOG KHANNA KD.4t.P H. . <br /> Heilth Officer <br /> P.D. Box 2009 0 (i6oi East Hazelton Avenue) • Stockton, California 95201 oq<<FOR��P <br /> (209) 468.3400 <br /> F KURT MILLER (C(ap'y <br /> SHELL OIL COMPANY FEB 2 6 1992 <br /> P 0 BOX 5238 <br /> CONCORD, CA 94524 <br /> RE: Shell Service Station SITE CODE 1785 <br /> 4445 Pershing Avenue <br /> Stockton, CA <br /> Public Health Services Environmental Health Division (PHS/EHD) is <br /> in receipt of your consultants request to discontinue ethylene <br /> dibromide and total lead analysis of groundwater sampling from <br /> monitoring wells 1, 2, and 3 . PHS/EHD consents to your request <br /> to terminate analyzing for total lead in these three wells, but <br /> this agreement will not include MW-4 since no data currently <br /> exists on this most recent well. <br /> The detection limits used in the past for ethylene dibromide <br /> (5ppb - 50ppb) have exceeded the primary maximum contaminant <br /> levels (MCLS) of 0. 02ppb, established February 25, 1989. PHS/EHD <br /> will need to see the results of samples collected then analyzed <br /> using the 0. 02ppb or lower detection limit before consideration <br /> for discontinuing testing for this constituent. <br /> Should you have any further questions regarding this matter, <br /> please contact Steven Schneider, REHS, of my staff at (209) 468- <br /> 3441. <br /> Jogi Khanna, M.D. , M.P.H. <br /> ealth loffi er <br /> L urs A. otulla, EHS, Program Manager <br /> Environmental Health Division <br /> LAC/SS: lb <br /> c: CVRWQCB - Elizabeth Thayer <br /> c: Aegis Environmental, Inc. - Duane Garrabrant <br /> 1050 Melody Lane, Suite 160; Roseville, CA 95678 <br /> A Division of Sat Joaquin County Health Carc Saviccs JkOL <br />