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Civic Center Square <br /> 2444 Main Street, Suite 215 DEC 0 2 2002 <br /> Fresno, California 93721-2734 GEOMATRIX <br /> (559) 264-2535 • FAX(559) 264-7431 <br /> tI' VIRONMENT HEALTH <br /> �(Z��c!✓� PERMIT/SERVICES <br /> November 27., 2002 <br /> Project 006437 <br /> Mr. Michael J. Infurna, Jr., Senior RENS <br /> San Joaquin County.Environmental Health Department <br /> LOP/ Site Mitigation Unit IV <br /> 304 East Weber Avenue,Third Floor <br /> Stockton, California 95202-2708 <br /> Subject: Well Permit Application <br /> UST Site No. 3 (Site Code 1282124) <br /> Portof Stockton, California <br /> -Dear Mr. Infurna: <br />'i <br /> Geomatrix Consultants,Inc. (Geomatrix) has prepared this application for a well permit on <br /> behalf of the Port of Stockton (Port). The work for the subject site will be conducted in <br /> F <br /> accordance.with the October 2002 "Work Plan for Additional Assessment and Remediation <br /> Evaluation of Petroleum Hydrocarbons in Groundwater"prepared by Geomatrix, which was <br /> approved with comments by the San Joaquin County Environmental Health Department <br /> (EHD) in a October 22, 2002, letter to the Port. <br /> This penult application is for: <br /> • The installation of three shallow groundwater monitoring wells to about 25 feet below <br /> ground surface (bgs) using a hollow-stem auger rig. The boreholes will be about 10 <br /> inches in diameter. These wells-will have 2-inch diameter PVC casing and 15-foot <br /> long screen. <br /> • The advancement of soil borings at two locations to a maximum depth of 50 feet bgs <br /> for soil and groundwater sampling using the dual-wall and dual-hole direct-push <br /> t method. The first hole will be for continuous soil coring and the second hole for <br /> discrete-depth grab groundwater sampling using a GeoProbe sampler or equivalent. <br /> E These borings will be about 3.25 inches in diameter. After sampling,these borings <br /> will be filled from the bottom with a neat cement-bentonite grout using a PVC pipe or <br />'i equivalent. <br /> f <br /> • If analytical results of the soil and/or grab groundwater samples indicate contamination <br /> in zones deeper than 25 feet bgs, one or two deeper groundwater monitoring well(s) <br />[ will be installed using a hollow-stem auger rig. The deep well(s), if installed,will be <br /> completed with 2-inch diameter PVC casing and screen across the affected zone. <br /> Geomatrix Consultants, Inc. <br /> t Engineers, Geologists, and Environmental Scientists <br /> 1APR0JEC'R6000s16437.00016437 permit appin.doc <br /> i <br />