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S <br /> PUBLIC; HEALTH SER1ICE ��P�.�.�oG <br /> SAN JOAQUIN COUNTY <br /> N' <br /> JOGI KHANNA M.D..NI.P.H. <br /> Health Officer P <br /> P.O. Box 2009 0 (1601 East Hazelton Avenue) • Stockton, California 95201 <br /> c4�iFOR`'� <br /> (209) 468-3400 <br /> MR. CLINT ROGERS <br /> CHEVRON U.S.A. INC. <br /> rn <br /> - MAR 17 1992 <br /> �jj <br /> 2 410 CAMINO RAMON C �- <br /> SAN RAMON, CA 94583-0804 U <br /> RE: Chevron Station 19-0557 SITE CODE: 1039 <br /> 139 South Center Street <br /> Stockton, CA <br /> Public Health Services Environmental Health Division (PHS/EHD) has <br /> reviewed the most recent quarterly report prepared by Groundwater <br /> Technology Inc. (GTI) which is dated December 19, 1991. PHS/EHD is <br /> in agreement with the your statement regarding the consistent <br /> groundwater gradient and levels of dissolved hydrocarbons. Based <br /> on the data collected thus far, PHS/EHD recommends the submittal of <br /> a proposal to continue the preliminary investigation and evaluation <br /> to determine the lateral extent of the groundwater contamination. <br /> As you know, this information is essential for the preparation of <br /> the Problem Assessment Report (PAR) and should be the focus of your <br /> efforts during this phase of the investigation. <br /> During the collection of the next quarterly samples, please include <br /> fecal coliform testing for monitoring wells 1 and 2 . Additionally, <br /> please remind your consultants to notify PHS/EHD at least 48 hours <br /> prior any sampling events, on any of your sites. <br /> Should you have any questions regarding these matters, please <br /> contact Steven Schneider, REHS, of my staff at (209) 468-3441. <br /> Jogi Kh na, M.D. , M.P.H. <br /> Health/O ficer <br /> It <br /> - <br /> c <br /> rie A. otulla, RE S, rogram Manager <br /> environmental Health Division <br /> LAC/SS: lb <br /> c: CVRWQCB - Elizabeth Thayer <br /> c: Groundwater Technology Inc. - Sandra Lindsey <br /> 4057 Port Chicago Highway, Concord, CA 94520 <br /> A Division of San Joaquin County Health Care Services <br />