Laserfiche WebLink
Cku I P4 <br /> PUBLIC HEALTH SERVICES �O.p :.CO H <br /> SAN JOAQUIN COUNTY <br /> JOG[KHANNA M.D.,M.P.H. <br /> Healch Officer <br /> V-1 <br /> F-614�i- <br /> P.O. Box 2009 0 (1601 East Hazelton Avenue) 0 StoStockton,California 95201OcktO <br /> (209)468-3400 <br /> Y1PETER D'AMICO <br /> BP OILI[HRIFrY OIL <br /> 5 <br /> 10000 LAIC WOOD BLVD , FEB 2 1993 <br /> DOWNEY CA 90240 <br /> RE: Thrifty Oil Company SrrE CODE:- 12" <br /> 1250 N. Wilson Way <br /> Stockton, CA 95205 <br /> San Joaquin County Public Health Services, Environmental Healt.. Divis P n (PHS/EHD) has reviewed the <br /> "Site Assessment Report" submitted and prepared by Thrifty Oil 7pany, dated January 17, 1992. <br /> PHS/EHD has the following comments: <br /> L The report lacked proposals for further work. <br /> 2. The contaminated groundwater plume covers the entire site and has not been physically <br /> defined. This was understated and misleading in the rep' rt. <br /> 3. Groundwater analytical results should be reporteiin parts per billion as opposed to parts <br /> per million. 1� I <br /> 4. Future analytical testing of groundwater should utilize ilize Environmental Protection Agency J <br /> (EPA) methods 601 and 602. EPA method 624 utilizes detection limits which are too <br /> high. <br /> 5. In the next "Quarterly Report" please provide infdr <br /> matil as to why Methylene chloride, <br /> 2-Butanone, and 4-Methyl-2-pentanone were dete ted in e groundwater. <br /> 6. Additional investigation of this site is warranted. sampt.ing of the existing monitoring <br /> wells on a quarterly basis should begin immediately. Additional soil borings and/or <br /> monitoring wells should be installed to determine the grbundwater gradient and physically <br /> define the extent of soil and groundwater contaminationli A work plan for installation of <br /> the additional soil borings and/or monitoring weig should be submitted to PHS/EHD by <br /> April 30, 1993. 1 <br /> If you have any questions, contact Michael Collins, EHS, at (209) -0138. <br /> Jogi Khanna, MP., M.P.H. .1 <br /> Health Officej-' <br /> 4 <br /> Laurie A. Cotulla, REHS, Program Manager <br /> Environmental Health Division <br /> LAC/MC:lb <br /> II <br /> L A Division of San Joaquin county Health Cuv sem�cs <br /> ---. 11-. ---.------.,- - --------------- <br />