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ENVIRONMENTAL HEALTH DEPARTMENT <br /> SANJOAQUIN COUNTY <br /> _Unit Supervisors <br /> Donna K. Heran, R.E.H.S. Carl Boigman, R.E.H.S. <br /> 304 East Weber Avenue, Third Floor <br /> Director Mike Huggins, R.E.H.S., R.D.I . <br /> At Olsen, R.E.H.S. Stockton, California 95202-2708 Douglas W. Wilson, R.E.H.S. <br /> Program Manager Telephone : (209) 468-3420 Margaret Lagorio, R.E.H.S , <br /> tr F o aN Laurie A. Cotulla, R.E.H.S. Robert McClellon, R.E.H.S. <br /> Program Manager Fax (209) 464-0138 Mark Barcellos, R.E.H.S. <br /> CRAIG OGATA AUG 0 G 2004 <br /> DIRECTOR OF FACILITIES MANAGEMENT <br /> SAN- JOAQUIN COUNTY PUBLIC WORKS <br /> 1722 EAST SCOTTS AVENUE <br /> STOCKTON CA 95205 - 6240 <br /> RE: San Joaquin County Garage SITE CODE: 1150 <br /> 130 North Hunter Street RO: 0495 <br /> Stockton, CA 95202 <br /> San Joaquin County Environmental Health Department (EHD) has reviewed Additional Site <br /> Investigation Report, dated May 7, 2004, which was prepared by Ramage Environmental, Inc . <br /> (Ramage) on your behalf. In the above-referenced document, Ramage proposes to install <br /> monitoring wells along the south and east walls of the parking garage, and to the west of the site <br /> to further define the lateral extent of impacted groundwater. Ramage also acknowledges that the <br /> soil and groundwater have not been delineated vertically for contaminants of concern at this site. <br /> EHD concurs with Ramage's recommendations to install monitoring wells along the south wall of <br /> the parking garage and to the west of the site. EHD suggests that the monitoring well proposed <br /> for installation along the east wall of the county garage be relocated closer to the former dispenser <br /> island, if feasible, to better delineate the plume of impacted groundwater. <br /> Further investigation to assess the vertical extent of impacted soil and groundwater should be <br /> conducted prior to or concurrently with the proposed work. Please submit a work plan to EHD by <br /> October 21 , 2004, that will address the additional vertical delineation and installation of the <br /> monitoring wells at this site. <br /> Should you have any questions or concerns regarding this letter, please contact Vicki McCartney, <br /> REHS, by mail (address on letter head), by telephone at (209) 468-3456, or by e-mail at <br /> vmccartney@sjcehd.com. <br /> Donna Heran, REHS, Director <br /> Environmental Health Department <br /> Vicki McCartney, REHSNuel C. Henderson, Jr. , RG <br /> LOP/Site Mitigation Unit IV LOP/Site Mitigation Unit IV <br /> c: Joseph Ramage, Ramage Environmental, hic . <br /> c: James L.L. Barton, CVRWQCB <br />