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n <br /> San Joaquin County DIRECTOR <br /> o N Donna Heran, REHS <br /> gip..•• 'CIO ,. <br /> �. Environmental Health Department <br /> ASSISTANT DIRECTOR <br /> 2 'L <br /> 600 East Main Street. Laurie Cotulla,RENS <br /> r Stockton, California 95202-3029 <br /> PROGRAM COORDINATORS <br /> Carl 8orgman,REHS <br /> fi`o a�P Website: www.sjgov.org/ehd Mike Huggins,REHS,RDI <br /> Margaret Lagorio, REHS <br /> Phone: .(209) 468-3420 Robert McClellon, REHS <br /> Fax: (209) 464-0138 Jeff Carruesco, REHS, RDI <br /> A. Teichert and Sons, Inc. <br /> Kase y Foley, REHS <br /> Attn.' George Takamori <br /> P. O Box 15002 <br /> Sacramento,CA 95851 <br /> RE: 103 N.,E Street <br /> - Site Code: 1555 <br /> Stockton, CA <br /> The San Joaquin County Environmental Health Department(EHD)is the lead agency providing the <br /> oversight of the investigation and cleanup of releases.frbm underground storage tanks (UST)within San <br /> Joaquin County.' EHD'has a contract with-California State Water Resources Control Board (SWRCB)to 1 <br /> conduct a UST corrective action program. Your site was placed in.the Local Oversight Program in 1989. it <br /> EHD has recently reviewed Well Installation Report and Site Conceptual Model Update dated February 28, <br /> 2008;prepared by Stratus Environmental; Inc for your site. This latest phase of work, installation of'3 <br /> shallow-screened and 1 deep-screened men-itoring.wells,was performed to determine the vertical and <br /> lateral extent of the1,2-dichoroethane (1,2-DCA) impact in ground water caused by the unauthorized <br /> release from former UST systems. Three of these monitoring wells(MW)were positive for 1,2-DCA. <br /> l <br /> Ground water analytical results from MW samples suggest the vertical and.lateral limits of.the plume remain <br /> undefined. The EHD directs you to conduct additional 1,2- DCA ground water assessment. All detected <br /> occurrences of 1,2-DCA in the ground water must be delineated. <br /> Please submit a work plan addendum by December 15,2008,to confirm and:define the extent of ground: <br /> water.contamination south, southeast,and east of the.reported-1,2-DCA plume. After EHD has issued the <br /> permit and the work has been performed,submit a report of findings with recommendations by February 1, <br /> 2009. <br /> If you;ihave any further questions regarding this matter.;contact Harlin Knoll, REHS <br /> at(209)468-3442_. <br /> 1 <br /> it <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Harlin Knoll, Senior REHS Nuel C. Henderson,Jr.,PG <br /> LOP/Site Mitigation Unit IV LOP/Site Mitigation Unit IV <br /> Cc: SWRCB-Cleanup Fund <br /> CVRWQCB-James Barton <br /> Stratus Environmental-Jay Johnson <br />