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ENVIRONMENTAL HEALTH DEPARTMENT <br /> °P° c SAN JOAQUIN COUNTY <br /> Donna K. Fleran, R.E.H.S. Pr•ogranr Courdinalors <br /> " I�,,��I�,� `' «r, c rr>, 304 East Webei-AvenUC.Third Floor Card Bosman,- R F.]].S. <br /> Jam,. Mil c ling[ills. <br /> 6' Laurie A, Cotulla, R.E.H.S. Stockton, California 9502-270S R F 11.5., R.D.I. <br /> �c c 1.c,i>ur,lr I1lrccr+.;rLlaigarei Lagario. R ILS. <br /> �gt;Fa�a�' Telephone: (249)468-34 .4 Rob(�rr Mcciclio,,. R F.n.s <br /> - Fax: (249)464-0138 lett(arrucsco. R.l--.11-5- <br /> Website: lvw'w.5l*gov.org/chd,/ KasQN Folcy. R.F.H.S. <br /> BALDIR & AMRIT GREWAL DEC 12 2006 <br /> GREWAL' S MARKET <br /> 4100 E F'REMONT STREET <br /> STOCKTON CA 95215 <br /> RE: Grewal's Market SHF CODE: 1574 <br /> 4100 Fremont Street <br /> Stockton, CA 95215 <br /> San Joaquin County Environmental Health Department (EHD) has revic"ved Colne Penetration <br /> Testing Sita Investigation — Alnril 2006 dated May 30, 2006, prepared and submitted to EHD b}, <br /> Advanced GeoEnvironmental, Inc. (AGE.') on your behalf. Based on the results of this cone <br /> penetration testing (CPT) investigation, AGE recommends "consideration of the site for low-risk <br /> closure." <br /> EHD is aware that groundwater samples collected from borehole CPI'-1 at 76, 85, and 95 Leet <br /> below ground surface (bgs), and borehole CPT-2 at 59, 80, and 95 feet bgs were non-detect for <br /> chemicals of concern (COC). Therefore, your site is currently under review for closure <br /> consideration. Of concern is the recent increase in concentration for 1,2-dichloroethane in <br /> groundwater samples collected from monitoring well MW-4 during the June 2006 groundwater <br /> sampling event. EI.ID is awaiting the analytical results from the third and fourth quarters to <br /> determine what action, if any, is needed. <br /> Central Valley Regional Water Quality Control Board (CVRWQCB) is requiring evaluation of' <br /> Environmental Screening Levels (LSLs), California Human Health Screening Levels (CHHSLs). <br /> (San Francisco Bay Regional Water Quality Control Board) and the potential for vapor intrusion <br /> into buildings for closure consideration of sites having residential contamination left in place. <br /> Therefore, you need to evaluate the threat of vapor intrusion inside the buildings located onsite. <br /> Please submit a x ork plan to EIID by February 14, 2007, to assess the potential for vapor <br /> intrusion into the existing onsite buildings, or provide a rational. with technical support, for <br /> discounting vapor intrusion into the buildings as a potential hazard for this site. <br /> If you have any questions or concerns, please contact Vicki McCartney by electronic mail at <br /> �.mre,lrtne�_�r �1j,:Uhci.r4> 11 or by telephone at(209) 468-3456. <br /> Donna Heran, REIIS, Director <br /> Environmental Health Department <br /> Victoria L. McCartney. Senior RFI-,HS Nucl C. Henderson, Jr.. PCT <br /> LOP/Site Mitigation Unit IV Fngineering Geologist <br /> LOR"Srte Mitigation Unit IV <br /> c: 11377 Cuellar - AGI- <br /> James L.L. Barton, PG - CVRWQCB <br />