Laserfiche WebLink
ENVIRONMENTAL HEALTH DEPARTMENT <br /> SAN JOAQUIN COUNTY <br /> Unit SupervisorsDonna K.Heran,R.E.H.S. <br /> 304 East Weber Avenue, Third Floor Carl Borgman,R.E.H.S. <br /> y , DtiC1oi Mike Huggins,R.E.H.S., R.D.I. <br /> kt <br /> S <br /> AlOlsen,R.E.H.S. Stockton, California 95202-2708 <br /> Douglas W.Filson.R.E.FLS. <br /> cq aw Program Manager Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> r p o R Laurie A.Cotulla,R.E.H.S. <br /> Program Manager Fax: (209) 464-0138 Robert McClellon,R.E.H.S. <br /> g Mark Barcellos,R.E.H.S. <br /> JAIL 10 2005 <br /> KAREN PETRYNA <br /> SHELL OIL PRODUCTS USA <br /> 20945 S WILMINGTON AVE <br /> CARSON CA 90810 <br /> RE: Former Shell Service Station Site Code:505602 <br /> 1267 Country Club Blvd. RO#: 0000062 <br /> Stockton, CA., 95204 Clean Up Fund#: 018070 <br /> San Joaquin County Environmental Health Department (SJCEHD) has reviewed Ground Water <br /> Monitoring Report— Third Quarter 2004. The report recommendations requested the discontinuing <br /> the analysis for 1,2-DCA for samples from monitoring wells S-1, S-2, S-4 through S-6 since they <br /> "have not contained detectable 1,2-dichloroethane concentrations". <br /> SJCEHD has reviewed historical data submitted for the monitoring wells listed and has determined <br /> that only monitoring well S-4 will be approved for discontinuation of analysis for 1,2-DCA. <br /> Although analysis of samples from the other monitoring wells included in this request were reported <br /> as non detect, detection limits ranged from 2.5 to 1000 ug/I. Ground water data reported as non- <br /> detect with elevated detection limits does not meet investigative requirements. In addition, samples <br /> from monitoring wells S-5 and S-6 were not analyzed for 1,2-DCA from February 11, 1999 until the <br /> February 23, 2004 sampling and the detection limit for those samples was 100 ug/I. <br /> If you wish to discontinue analyzing ground water samples from monitoring well S-4 for 1,2-DCA, you <br /> may. All other monitoring wells must have at least four consecutive quarters of`non-detect' results, <br /> at a detection limit of 0.5 ug/I, before they can be evaluated for removal of this requirement. <br /> Shell is hereby directed to analyze all monitoring well ground water samples on a quarterly <br /> basis, except S-4, for 1,2-DCA by EPA Method 82608, utilize a detection limit of 0.5 ug/l, and <br /> report the results to SJCEHD prior to each subsequent sampling event. <br /> Questions and response letters may be addressed to Michael Infurna or you may contact me at (209) <br /> 468-3454. <br /> Donna Heran, REHS, Director <br /> Enviro ental �Health Dertme t <br /> Michael J. Infurna Jr., Senio REH Margare Lagorio, REHS <br /> LOP/ Site Mitigation Unit IV Supervisor <br /> MI/ <br /> c: CVRWQCB —James Barton, Sacramento. <br /> c: Cambria—Joe Neely, PO Box 259, Sonoma, CA., 95476. <br /> c: SWRCB-CUF —Claim #018070 - Barbara Rempel, Sacramento <br /> c: SJ County District Attorney Office— David Irey. <br />