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;TATE OF CALIFORNIA GEORGE DEUKMEJIAN,Governor <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD— <br /> CENTRAL VALLEY REGION <br /> ;443 ROUTIER ROAD (a <br /> -ACRAMENTO.CA 95827-3098 <br /> 20 September 1989 <br /> SEEP N 21 1989 <br /> Mr. Herbert Young <br /> Groveman & Young ENVIRONMENTAL HEALTH <br /> 3580 Wilshire Blvd. , Suite 1745 PERMIT/SERVICES <br /> Los Angeles, CA 90010 <br /> SILGAN CONTAINER CORPORATION, STOCKTON CANNING FACILITY, 1815 NAVY DRIVE, <br /> STOCKTON; 15 SEPTEMBER 1988 WORK PLAN - REVISED 15 SEPTEMBER 1989 <br /> We have reviewed the 15 September 1989 "Work Plan for the Installation of One <br /> Additional Monitoring Well in Preparation of Submitting a Site Investigation <br /> Report For Silgan Containers Corporations' Facility at 1815 Navy Drive in <br /> Stockton, California" (work plan) , prepared for Silgan Containers Corporation <br /> (Silgan) by their consultant, Anania Geologic Engineering. The work plan <br /> includes the results of the recent round of sampling of the on-site wells, and <br /> proposes installation of one additional monitoring well in the former tank <br /> location. <br /> Based on the lab results for ground water samples obtained from the on-site <br /> monitoring wells, ground water at this site has been impacted by discharges of <br /> hydrocarbons and halogenated volatile organic chemicals . <br /> According to the work plan, the proposed monitoring well is intended to assess <br /> the possible effect on ground water from the soil in the backfilled <br /> excavation . However, since around water contamination was confirmed by the <br /> recent round of ground water sampling, the information that would be provided <br /> by the single proposed monitoring well would be of limited value because <br /> Silgan will be required to define the full extent of contamination. This will <br /> necessarily involve the installation of additional monitoring wells on-site <br /> and off-site. <br /> By 13 October 1989, please submit an addendum to the work plan indicating <br /> proposed locations for an appropriate number of monitoring wells to complete a <br /> Problem Assessment Report. If you should have any questions, please call me <br /> at (916) 361-5731 . <br /> THOMAS D. PELTIER <br /> Engineering Geologist <br /> TDP/tdp <br /> cc: Ms. Diane Hinson, San Joaquin County Public Health Services, Stockton <br /> Mr. Karl Anania, Anania Geologic Engineering, Rancho Cordova <br /> Mr. Myron Beekman, Silgan Container Corp. , Burbank <br />