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Op4U1N' .0 <br /> PUBLIC rIEALTH SERVICES �.. <br /> SAN JOAQUIN COUNTY a <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M.D. , M.P.H. , Acting Health Officer <br /> � / FORD <br /> 445 N. San Joaquin Street • P.O. Box 388 • Stockton, CA 95201-0388 <br /> (209) 468-3420 Copy <br /> CHUCK CARMEL <br /> ARCO PRODUCTS COMPANY <br /> PO BOX 5811 JUN 2 41994. <br /> SAN MATEO CA 94402 <br /> RE: ARCO Station #548 SITE CODE: 1121 <br /> 1612 Hammer Lane <br /> Stockton CA 95207 <br /> San Joaquin County, Public Health Services Environmental Health Division (PHS/EHD) has <br /> completed review of the "Status Report, First Quarter 1994" dated June 15, 1994 and <br /> prepared by RESNA. PHS/EHD has the following comments for your consideration. <br /> Groundwater samples were collected on April 8, 1994 after contamination was detected in <br /> the trip blank collected during the March 28, 1994 sampling event. Groundwater <br /> contamination continued to be evidenced in samples collected on April 8, 1994 and in fact, <br /> groundwater contamination concentrations detected have increased, possibly as a result of <br /> the 3 feet increase in the groundwater elevation at the site. <br /> The increase in concentrations detected in the off site monitoring well also suggests that <br /> contamination has migrated off site. <br /> As PHS/EHD indicated in correspondence dated June 2, 1994, additional information was <br /> requested by August 15, 1994, as addendum to the Problem Assessment Report. PHS/EHD <br /> also requested that you submit information which indicates that the primary source of the <br /> contamination evidenced has been eliminated. PHS/EHD is concerned that if remediation <br /> is not initiated in a timely manner that the extent of contamination will continue to increase <br /> along with the total cost of remediation. <br /> If you have any questions, comments, or wish to schedule a site inspection, please contact <br /> Mary Meays at (209) 46&0337. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> L41 tcllc- a4ll� <br /> Mary Ways, Senior REHS Dianebhsto�n-, REHS <br /> Site Mitigation Unit Supervisor <br /> NIK1612HAM <br /> cc: Elizabeth Thayer, CVRWQCB cc: John Bobbitt, RESNA <br /> a Di kion of San ,loaquin County Health Care Services <br />