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N PUBLIC HEALTH SERVICES <br /> Op4uiN' C <br /> SAN JOAQUIN COUNTY <br /> JOGI KHANNA M.D., M.P.H. <br /> Health Officer <br /> P.O. Box 2009 ( 1601 East Hazelton Avenue) • Stockton, California 95201 �4t1 F .0 <br /> i <br /> (209) 468-3400 <br /> 17i <br /> CHUCK CARMEL j <br /> I ENVIRONMENTAL ENGINEER , <br /> ARCO PRODUCTS COMPANY J ` <br /> PO BOX 5811 FEB 1 7 199 <br /> SAN MATEO CA 94402 <br /> RE: ARCO Station #548 SITE CODE: 1127 <br /> 1612 Hammer Lane <br /> Stockton CA 95207 <br /> San Joaquin County, Public Health Services Environmental Health Division (PHS/EHD) has completed <br /> review of the "Addendum to Work Plan for a Subsurface Environmental Investigation" dated January 29, <br /> 1993 and prepared by RESNA. PHS/EHD has the following comments for your consideration. <br /> PHS/EHD requested additional soil investigation, in correspondence dated October 16, 1992, in the areas <br /> t of soil borings, B-12 (waste oil tank) B-13 (dispenser island), and beneath the oil-water separator. <br /> I PHS/EHD also requested a downgradient monitoring well to establish the boundaries of soil and/or <br /> groundwater contamination. <br /> The work plan proposed four soil borings drilled to approximately 48 feet and one soil boring drilled to 60 <br /> feet, to be converted into monitoring well, MW5. There were two soil borings proposed to investigate the <br /> dispenser island. Consideration should be given to possibly converting one of these soil borings into a <br /> monitoring well, providing a downgradient well to monitor contamination evidenced by soil boring B-13. <br /> The work plan did not include investigation of the oil-water separator. Additional investigation of this <br /> area will be necessary. <br /> Enclosed is the accepted permit #93-0202. Please contact PHS/EHD 48 hours in advance of site work to <br /> schedule an inspection. Please note PHS/EHD inspections are an important aspect of local regulatory <br /> oversight. If you have any questions, comments, or wish to schedule a site inspection, please contact <br /> Mary Meays, REHS, at (209) 468-0337. <br /> Jogi Khanna, M. ,-M.P.H. <br /> Health Office <br /> X <br /> . Cotulla, REHS, Program Manager <br /> mental Health Division <br /> :lb <br /> Enc, <br /> j c: Elizabeth Thayer, CVRWQCB <br /> c: Jay Johnson, RESNA <br /> A Division of San Joaquin County Health r Services �� <br />