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ENVIRONMENTAL HEALTH DEPARTMENT <br /> SAN JOAQUIN COUNTY <br /> a '� -7 Donna K. Heran, R.E.H.S. Prograne Coordinators <br /> Director 304 East Weber Avenue,Third Floor Carl Bergman, R.E.H.S. <br /> . Laurie A. Catulla, R.E.H.S. Stockton,California 95202-270$ Mike Huggins, R.E.H.S., R.D.I. <br /> Cq�lFO.pN,P Assistant Director Telephone: (209)468-3420 Margaret Lagorio, R.E.H.S. <br /> Robert McClellon, R.E.H.S. <br /> Fax: (209)464-0138 Jeff Carruesco, R.E.H.S. <br /> Website:www.sjgov.org/ehd/ Kasey Foley, R.E.H.S, <br /> CARL NAVARRA APR 2 4 2007 <br /> 475 BLEWETT ROAD <br /> TRACY CA 95376 <br /> RE: Navarra Property Site Code: 1392 <br /> 7500 Eleventh Street <br /> Tracy CA 95376 <br /> By letter dated 27 July 2006, the San Joaquin County Environmental Health Department (EHD) <br /> directed that a corrective action plan (CAP) be prepared for your site and submitted to the EHD <br /> by 15 August 2006. To date the CAP has not been received. <br /> In Groundwater-Quality Monitoring Report July 14-15 2006, dated September 2006, the San <br /> Joaquin Company, Inc (TSJCI) states that the EHD directed that semi-annual monitoring be <br /> conducted. This is only partially correct; the EHD approved annual monitoring of perimeter wells <br /> and semi-annual monitoring of the core wells. At the meeting held with your consultants on 16 <br /> June 2006, TSJCI agreed to reevaluate their proposed monitoring schedule due to the <br /> perturbation of the groundwater flow in the area of the septic system on the north side of <br /> Eleventh Street. The EHD has not received a proposed monitoring schedule based on that <br /> reevaluation. Please note that annual monitoring of perimeter wells applies to those with long- <br /> term 'non-detect' results but that a down-gradient well should be sampled for a 'non-detect' <br /> result to demonstrate plume stability and contraction. <br /> Submit the CAP and any proposed revised monitoring schedule to the EHD by 04 .lune 2007. If <br /> you have any questions or comments you may contact Nuel Henderson at (209) 468-3436. <br /> Donna Heran, RENS, Director <br /> Environmental Health Department <br /> Nuel C. Henderson, Jr., PG Margaret Lagorio, REHS <br /> Engineering Geologist Program Coordinator <br /> LOP/Site Mitigation Unit IV LOP/Site Mitigation Unit IV <br /> cc: James L.L. Barton, CVRWQCB <br /> Dai Watkins, TSJCI <br />