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San Joaquin County DIRECTOR <br /> Donna Heran,REHS <br /> ._.� Environmental Health Department <br /> �•,._.-..:fit..,.p N ASSISTANT DIRECTOR <br /> 2.�, ��. 600 East Main Street Laurie Cotulla,REHS <br /> N' .< Stockton California 95202-3029 <br /> � PROGRAM COORDINATORS <br /> Carl Borgman, REHS <br /> Mike Huggins, REHS,RDI <br /> Website: www.sjgov.org/ehd Margaret Lagorio, REHS <br /> Phone: (209)468-3420 Robert McClellon,REHS <br /> Fax: (209)464-0138 Jeff Carruesco,REHS,RDI <br /> Kasey Foley, REHS <br /> ANDREW EGGIMAN WAN O 4 .2008 <br /> C/O ROBERT EGGIMAN <br /> PO BOX 580 <br /> MOUNTAIN RANCH CA 95246 <br /> RE: Eggiman's Hydraulic SITE CODE: 1914 <br /> 1112 E. Harding Way <br /> Stockton CA 95205 <br /> San Joaquin County Environmental Health Department (SJC/EHD) has reviewed <br /> Subsurface Investigation to Assess the Lateral Extent of Petroleum Hydrocarbon Impact <br /> to Groundwater at Eggiman Property(Report) dated November 19, 2007 submitted on <br /> your behalf by ATC Associates, Inc. (ATC) and has the following comments. <br /> The Report documents the installation, development and sampling of four groundwater <br /> monitoring wells installed offsite to assess the lateral extent of the petroleum hydrocarbon <br /> contamination in groundwater documented at your site. One additional well proposed for <br /> location east of your site could not be installed due to above and underground utilities. <br /> Per SJC/EHD correspondences datedJanuary 2, 2007, and September 20, 2007, the <br /> Report was to contain a site conceptual model and calculations of contaminant mass <br /> remaining at the site. These items, however, were not included in the Report. Please <br /> prepare and submit a site conceptual model.that includes.cross sectional diagrams which <br /> show distribution of plumes of impacted soil and groundwater, and calculations of <br /> contaminant mass remaining in both soil and groundwater, and submit it to SJC/EHD no <br /> later than February 15, 2008. <br /> If you have any questions please call Lori Duncan at (209) 468-0337. <br /> Donna Heran, REHS, Director <br /> Environmental Health Department <br /> Lori Duncan, Senior REHS Nuel C. Henderson, Jr., PG <br /> LOP/Site Mitigation Unit IV Engineering Geologist, Unit IV <br /> cc: James Barton, CVRWQCB <br /> Jeanne Homsey, ATC <br /> Todd Hafner, ATC <br />