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ENVIRONMENTAL HEALTH DEPARTMENT <br /> Q <br /> SAN JOAUIN COUNTY <br /> Unit Supervisors <br /> Donna K.Heran,R.E.H.S. <br /> Carl Borgman,R.E.H.S. <br /> N: :{ Director 304 East Weber Avenue, Third Floor <br /> Al Olsen R.E.H.S. Stockton California 95202-2708 Mike Huggins,Wilson, <br /> S.,R.D.I. <br /> > Douglas W.Wilson,R.E.H.S. <br /> • cq .. .•�P Program Manager Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> Laurie A.Cotulla,R.E.H.S. <br /> Fax: (209) 464-0138 Robert McClellon,R.E.H.S. <br /> Program Manager Mark Barcellos,R.E.H.S. <br /> JOHN JOHNSON APR 11 ZOOZ <br /> THE CUSTOMER COMPANY <br /> 4457 PARK RD <br /> BENICIA CA 94510-1124 <br /> RE: THE CUSTOMER COMPANY Site Code: 1404 <br /> 15 E.GRANT LINE RD <br /> TRACY,CA <br /> San Joaquin County Environmental Health Division(EHD)has reviewed"First Quarter,2002 Groundwater <br /> Monitoring Report-Underground Storage Case Former Cheaper! #37, 15 Grant Line Road,Tracy,San <br /> Joaquin County,"dated March 19,2001 prepared by H2OGEOL on your behalf. In the"Recommended <br /> Continued Monitoring"section of the above referenced report,H2OGEOL states that events after 1998 are <br /> the obligation of the Convenience Acquisition Company operating as More for Less#37. EHD's records <br /> show that there has been no change in ownership of the property dating back to 1992. Primary ownership <br /> still belongs to John&F. Sallaberry ETAL. The Unauthorized Release(UAR)form,dated 3/9/88,lists <br /> The Customer Company as the responsible party. No other UAR has been filed to date. Therefore,The <br /> Customer Company and John&F. Sallaberry ETAL are the parties responsible for the investigation and <br /> remediating the site until a"no further action"letter has been provided. <br /> EHD does agree to the reduction of monitoring well sampling frequency. Up-gradient monitoring wells <br /> MW-3 and MW-2 may be reduced to annual monitoring. MW-1 and MW-7,however,provide down/cross <br /> gradient plume definition and will continue to be monitored quarterly. Due to the close proximity of MW- <br /> 6 to the tank pit and low but increasing levels of methyl tertiary butyl ether(MtBE),quarterly monitoring <br /> should continue. Notify EHD 48 hours prior to any scheduled sampling events. <br /> Review of results of the soil samples taken by Parker Environmental Services,reported in April of 1993 <br /> and November of 1995 show that the lateral and vertical extent of soil contamination remains undefined at <br /> this site. If data exists that shows definition,provide EHD with cross sections showing areas of no detected <br /> contamination. Otherwise,submit a work plan to define the lateral and vertical extent of soil contamination <br /> to EHD by June 10,2002. Please contact Sam Savig,EHS at(209)468-3453 if you have any questions <br /> regarding this letter. <br /> Donna Heran,REHS,Director <br /> Environmental Health Department <br /> Sam Savig,EHS Margaret agono,REHS <br /> Site Mitigation Unit IV Supervisor LOP/Unit IV <br /> cc: Marty Hartzell-CVRWQCB <br /> Gary D.Lowe-H2OGEOL <br />