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02/22/01 TO 08:34 FAX • • fih 002 <br /> California Regional Water Quality Control Board <br /> Central Valley Region (OZ <br /> Winston H.Hickox Crav Davis <br /> Secretary,for Sacramento Main Office Governor <br /> Environmental Internet Addreae: http://www.swreb.ca.gov/—rwgcb5 <br /> Pralecaon 3443 Routier Road,Suite A,Sacramento,Califomia 95927-3003 <br /> Pbone(916)25$-3000-FAX(916)255.3015 <br /> 8 January 2001 <br /> Mr. Benjamin Ball <br /> Musco Olive Products <br /> 17950 Via Nicolo <br /> Tracy, CA 95376 <br /> CONDITIONAL APPROVAL, HYDROGEOLOGIC INVESTIGATION WORKPLAN, MUSCO <br /> OLIVE PRODUCTS,SAN JOA QUIN COUNTY <br /> I have reviewed the 29 December 2000 Hydrogeologic Investigation Workplan,prepared by Kleinfelder. <br /> The report was submitted in response to Requirement C.2 of Cleanup and Abatement Order No, 5-00- <br /> 717. After reviewing the workplan,I have the following comments: <br /> • Section 4.1, Soil Analysis, states, "A minimum of two (2) soil samples from both deep borings in <br /> the pond areas will be analyzed." The Order requires a minimum of two soil samples from each <br /> deep boring. Please clarify the number of samples prior to implementing the investigation. <br /> • It is noted that the deep borings will be drilled with 10-inch hollow stem augers. That is <br /> acceptable,however, easier drilling would be experienced using 8-inch diameter hollow stem <br /> augers. <br /> • Because of the depth of drilling and the likelihood that a significant portion of the borehole will <br /> be unsaturated,Musco shall grout the borings using a cement based grout material as described <br /> in Section 19.1) of California Well Standards Bulletin 74-90, and Section 13.17 of San Joaquin <br /> County Environmental Health Department's Well Standards. Bentonite chips or slurry is not <br /> acceptable as a grout material. <br /> The workplan is approved on the condition that the above comments are addressed in an addendum <br /> letter. By 19 January 2001,Musco shall submit an addendum to the workplan. If you have any <br /> questions on this conditional approval,please telephone me at(916)255-3116. <br /> TIMOTHY R. O'BRIEN <br /> Waste Discharge to Land Unit <br /> San Joaquin River Watershed <br /> cc: Mike Huggins, San Joaquin County Environmental Health Department, Stockton <br /> Laura Racca,Kleinfelder,Stockton <br /> Richard Stratton,HDR, Folsom <br /> California Environmental Protection Agency <br /> cHnW�W�nw.x..vn®,emn.Wc <br /> Q Recycled Paper <br />