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'11 <br /> E C <br /> ENVIRONMENTAL PfEYALTH"DEPARTMENT <br /> PO� N <br /> 411? ...•... SAN JOAQUIN COUNTY <br /> Unit Supervisors <br /> N: :` Donna K.Heran,R.E.H.S. <br /> 'R Director 304 East Weber Avenue, Third Floor Carl Bor gman,R.E.H.S. <br /> Al Olsen,R.E.H.S. Stockton, California 95202-2708 Mike Huggins,R.E.H.S.,R.D.I. <br /> • P • ram Pro Manager Douglas W.Wilson,R.E.H.S. <br /> q(lFpReg Man Fax: (209) 464-0138 Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> Laurie A.Co R.E.H.S. Robert McClellon,R.E.H.S. <br /> Program Manager Mark Barcellos,R.E.H.S. } <br /> CESAR CRUZ / KATHERINE HALLIGAN <br /> PACIFIC BELL FEB 14 2003 <br /> 907 LINCLON RD <br /> STOCKTON CA 95207 <br /> RE: Pacific Bell Facility Site Code: 0001338 <br /> 10 E. 12th Street ROM 1338 <br /> Tracy, CA. 95376 <br /> San Joaquin County Environmental Health Department (EHD) has reviewed the <br /> `Additional Site Assessment Activities Report"dated November-2002 as <br /> submitted by Shaw Environmental on December 2, 2002 and has the following <br /> comments. <br /> In discussions with staff of the Central Valley Regional Water Quality Control <br /> Board (CVRWQCB) it was concluded that the levels of diesel contamination in <br /> the groundwater were not delineated and this site requires further investigation to <br /> assess the vertical and lateral extent of the impacted soil and groundwater. <br /> Additionally, a sensitive receptor survey is to be conducted and groundwater flow <br /> direction in the area is to be determined. <br /> Please submit the additional site assessment work plan to this office by March <br /> 31, 2003. To aid EHD's review of the work plan, justify each element of the work <br /> plan in the context of a site conceptual model constructed from the available data <br /> for the site. <br /> Please contact Michael Infurna at (209) 468-3454 if you have any questions. Mr. <br /> Infurna can also be reached by email at minfurn_a(aD-slcehd.com. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> ichael J. Infurna WJrSenior REHS Margar Lagorio, R HS <br /> Site Mitigation Unit IV Supervisor <br /> MI/ <br /> c: Shaw Env. — D. Wynne, IT Corp, 4005 Port Chicago Hwy, Concord. 94520 <br /> c: CVRWQCB -- James Barton, Sacramento <br />