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California Regfual Water Quality C*rol Board <br /> Central Valley Region <br /> !.. <br /> Steven T.Butler,Chair <br /> Winston H.Hickox Gray Davis <br /> Secrelwyfor Sacramento Main Office Governor <br /> Environmental Internet Address: http://www.swrcb.c&gov/—mgcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827.3003 <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> i <br /> 27 October 2000 <br /> Mr. Nick Nickerson Mr. Ed Koberstein Mr. Jay Allen, President <br /> Unocal DBG/AMG Montgomery Wards Stone Brothers Management Co. <br /> 8788 Elk Grove Blvd. 1331 South Harbor Blvd. 1024 West Robinhood Drive <br /> Building 3, Suite 15 Fullerton, CA 92632 Stockton, CA 95207 <br /> Elk Grove, CA 95624 <br /> WORK PLAN FOR 5606 AND 5400 PACIFIC AVENUE-AND DELTA COLLEGE, <br /> STOCKTON, CLEANUP AND ABATEMENT ORDER NO. 5-00-707 (C&A) <br /> I reviewed your Supplemental Investigation Report, Problem Assessment Report (PAR) and Work Plan <br /> proposal submitted in compliance with C&A Order Nos. 4, 5, and 8. The PAR is incomplete and the <br /> Work Plan does not address the deep contamination below 63 feet. You propose to install three monitor <br /> wells on the former Unocal property and place cone penetrometer test borings (CPT) on the Delta <br /> College campus to determine where and how monitoring wells should be placed. <br /> You are not to install monitor wells on any site until an adequate number of CPT borings are drilled and <br /> ground water analyses completed on all three sites. The CPT must be drilled deep enough to determine <br /> the vertical extent of the hydrocarbon contamination. Upon determining the vertical migratory <br /> routes/pathways, cluster wells with short,5-foot, slotted screens are to be installed. This phase of work <br /> must be completed as soon as possible in order to remain in compliance with the C&A Orders. As <br /> currently proposed,you will be unable to successfully clean up the ground water in a timely manner. <br /> Board staff are available to assure the CPT borings are completed properly and the placement of the <br /> cluster monitoring wells defined. If you have any questions about our review of your submittal, or to set <br /> the kd <br /> site work, please contact Marty Hartzell at (916) 255-3115. <br /> GOGGS <br /> Undrogram Manager <br /> Cenon <br /> Cc: Ms. Wenalyn Fua, State Water Resources Control Board, Cleanup Fund, Sacramento <br /> Ms. Margaret Lagorio, San Joaquin County Environmental Health, Stockton <br /> Ms. Toni Cardinale, Risk Manager, San Joaquin Delta College, Stockton <br /> Mr. Steven Bright, Environmental Audit, Inc., Placentia <br /> California Environmental Protection Agency <br /> Qd Recycled Paper <br />