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k <br /> ENVIRONMENTAL HEALTH DEPARTMENT <br /> SAN JOAQUIN COUNTY <br /> Unit Supervisors <br /> Donna K.Heran,R.E.H.S. 304 East Weber Avenue, Third Floor Carl Bergman,R.E H S ` <br /> Director Mike Huggins,R.E.H.S',R.D.I. I <br /> AI Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> o• Program Manager Telephone: (209) 468-3420 Margaret Lagono,R.E.H.S. <br /> ac%Foal Laurie A.Cotulla,R.E.H.S. Robert McClellon,R.E.H.S. <br /> Program Manager Fax: (209) 464-0138 Mark Bareellos,R.E.H.S. <br /> JAMES GIOTTONINI APR 0 8 2003 <br /> PUBLIC WORKS DIRECTOR <br /> CITY OF STOCKTON <br /> 425 N EL DORADO ST <br /> STOCKTON CA 95202 <br /> Re: Fontana Drive at Smith Canal <br /> Smith Canal Pump Station <br /> Stockton, CA 95202 <br /> Four extraction wells were installed to approximately 40 feet below surface grade (bsg) at the <br /> property immediately north of the above-referenced site for the purpose of dewatering the <br /> area as a part of City of Stockton Municipal City Utilities sewer line construction project. <br /> This dewatering may have a'mobilizing effect on the existing groundwater contamination at <br /> the site. San Joaquin County Environmental Health Department (EHD) requests that <br /> groundwater elevation be measured from all the monitoring wells at the site, and <br /> groundwater samples be collected and analyzed from MW-2 and MW-7 to monitor the <br /> effect on the contamination plume,on a weekly basis over the duration of the dewatering r <br /> project. Sampling of all the monitoring wells may be required after the dewatering project <br /> ends and the groundwater plume re-stabilizes. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division `\ <br /> C � _w <br /> Jeffrey Wong , Senior REHS Nuel C. Henderson,Jr., RG <br /> LOP/Site Mitigation Unit IV LOP/Site Mitigation Unite IV <br /> c RWQCB, Central Valley Region—James L.L. Barton,RG <br /> fax: ATC—Jeanne Homsey, P.E. <br />