Laserfiche WebLink
STATIC OF CALIF'OP,NIA - Environmental Protection Agency PETE WILSON, Governor <br /> CALFORNIA REGIONAL WATER QUALITY CONTROL BOARD ENVIROPIMEN FAL HEALTH _ <br /> CENTRAL VALLEY REGION pFRI�Ir C_ " n <br /> 3443 Routier Road, Suite A SERVICE a <br /> Sacramento, CA 95827-3098 <br /> PHONE: (916) 255-3000 95 JAN 17 PM 0� 41 <br /> = <br /> FAX: (9161 255-301 S <br /> 13 January 1995 <br /> Ms. Catherine Whitworth <br /> Trustee in Bankruptcy for Cal Farm Supply <br /> P.O. Box 280 <br /> Davis, CA 95617 <br /> REQUEST FOR FURTHER INVESTIGATION.• CAL FARM SUPPLY, STOCKTON <br /> Thank you for submitting the Groundwater Sampling Results - Fourth Quarter 1994 report for the <br /> former Cal Farm Supply facility on West Washington Street, Stockton. I have reviewed the <br /> pesticide and nitrate portion of the report, while Diane Hinson of San Joaquin County Public Health <br /> Services has reviewed the petroleum portion. This letter incorporates both agencies' comments and <br /> concerns. <br /> Staff are not comfortable with the groundwater gradient information generated at this site. Gradient <br /> determinations over the last few years have shown large shifts, and the groundwater elevations <br /> measured in November 1994 do not correspond with those measured at the adjacent site on the same <br /> day. In order to develop accurate data, and to determine whether Cal Farm Supply is indeed, <br /> responsible for the constituents found in the groundwater beneath the site, we will require that the <br /> five monitoring wells be re-surveyed. <br /> The re-surveying must be completed by a licensed surveyor. The wells shall be surveyed relative to <br /> the bench mark south of Washington Street and east of the railroad tracks which border Cal Farm <br /> Supply. Staff from either the Regional Board or San Joaquin County must be present during the <br /> surveying. <br /> By 15 February 1995, please submit a re-surveying report. The report should contain (a) the <br /> surveying notes and calculations signed by a licensed surveyor; (b) any re-calculations which are <br /> necessary to determine the gradient for the last four sampling events; and (c) re-calculated gradients <br /> for the last four sampling events. <br /> Upon receipt of the re-surveying report, we will advise you as to the further steps which will be <br /> necessary to assess and/or remediate the chemicals found in the groundwater beneath the site. If <br /> you have any questions, I can be reached at (916) 255-3104. <br /> WENDY WYELS <br /> Ag Regulatory Unit <br /> cc: Ms. Kelye McKinney, Kennedy/Jenks Consultants, Sacramento <br /> Ms. Diane Hinson, San Joaquin County Public Health Service, Stockton <br />