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ENVIRONMENTAL HEALTIDEPARTMENT <br /> SAN JOAQUIN COUNTY <br /> Unit Supervisors <br /> Donna K.Heron,R.E.H.S. Carl Borgman,R.E.H.S. <br /> Director 304 East Weber Avenue, Tbird Floor Mike Huggins,R.E.H.S.,R.D.I. <br /> F .3 <br /> Al Olsen,R.E.H.S. $tOCICtOn, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> • .. - 'P Program Manager Telephone: (209)468-3420 Margaret Lagorio,R.E.H.S. <br /> q ..........� <br /> ��F oad Laurie A.Cotulla,R.E.H.S. Robert McClellon,R.E.H.S. <br /> Program Manager Fax: (209) 464-0138 Mark Barcellos,R.E.H.S. <br /> MAR 13 2002 <br /> GENE GABBARD JIM & SHEYLA CREEL <br /> P O BOX 1260 12511 MUNDY <br /> STOCKTON CA 95212 LODI CA 95240 <br /> RE: Gene Gabbard, Inc. SITE CODE: 1090 <br /> 640 N. EI Dorado Street <br /> Stockton CA 95202 <br /> San Joaquin County, Environmental Health Department(SJC/EHD) has reviewed the"Quarterly <br /> Groundwater Monitoring Report, 4`h Quarter 2001"dated February 21, 2002 that was submitted on <br /> your behalf by Ground Zero Analysis, Inc. (Ground Zero)and has the following comments. <br /> The report documents a routine quarterly groundwater monitoring and sampling event that took <br /> place on December 12, 2001. Free product was once again present in monitoring well MW-3, and <br /> a groundwater sample was not collected. Analytical results of the groundwater samples collected <br /> from MW-1, MW-2 and MW-4 were consistent with previous events,with non-detect results for total <br /> petroleum hydrocarbons (TPH)and benzene, toluene, ethylbenzene and xylenes (BTEX), and <br /> positive results for various volatile organic compounds. <br /> The report recommends continued periodic removal of free product from MW-3, continued periodic <br /> monitoring and sampling of the groundwater wells, and discontinuing analysis for total lead, total <br /> recoverable petroleum hydrocarbons (TRPH), TPH gasoline,TPH diesel and BTEX in the site <br /> perimeter wells. The report recommends continuing analysis of groundwater samples from all <br /> wells for volatile organic compounds by EPA Method 8260. <br /> Continued quarterly groundwater monitoring and sampling of all site monitoring wells has been <br /> previously directed by SJC/EHD. In correspondence dated December 31, 2001 SJC/EHD agreed <br /> with a previous Ground Zero recommendation to discontinue analysis of groundwater samples for <br /> total lead from all site wells, and for TRPH in the perimeter wells. SJC/EHD does not agree with <br /> the recommendation to completely discontinue analysis for TPHg, TPHd and BTEX in the site <br /> perimeter wells. Analysis of groundwater samples for these constituents must continue annually. <br /> A work plan to continue the investigation of the vertical and lateral extent of the documented <br /> contamination at this site, and to begin feasibility testing,was due for submittal on February 25, <br /> 2002. This work plan was not received by SJC/EHD. On March 8, 2002 Ground Zero verbally <br /> requested an extension of the due date, and agreed that the work plan would be submitted prior to <br /> March 31, 2002. <br /> Donna Heran, REHS, Director <br /> Environmental Health Department <br /> (,vc� Cil c�n'`"a <br /> Lori Duncan, Senior REHS Mergare Lagorio, Supervising REHS <br /> LOP/Site Mitigation Unit IV LOP/Site Mitigation Unit IV <br /> cc: Marty Hartzell, CVRWQCB <br /> John Lane, Ground Zero <br />