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02/22/01 THU 08:35 FAX • • U 004 <br /> . � N■ KLLINFELUER <br /> • Drilling is easier with 8-inch auger, but with the anticipated depths at which the drilling may <br /> have to reach, Kleinfelder, in conjunction with the drilling subcontractor, have made <br /> preparations to extend the drilling range by converting over to air rotary methods. <br /> If drilling can be accomplished with an 8-inch auger, then that will be the protocol followed. <br /> "Because of the depth of drilling and the likelihood that a significant portion of <br /> the borehole will be unsaturated, Musco shall grout the borings using a cement <br /> based grout material as described in Section 19.D of California Well Standards A <br /> bulletin 74-90, and Section 13.17 of San Joaquin County Environmental Health <br /> Department's Well Standards. Bentonite chips or slurry is not acceptable as a <br /> grout material." <br /> • Kleinfelder's workplan, Appendix B, Section B-2.8 Boring Closure and Cutting Disposal <br /> states "Soil borings are closed immediately after the collection and logging of soil samples. <br /> Closure is accomplished by grouting the boring with a cement/bentonite slurry or as <br /> otherwise required". <br /> The borings will be grouted in accordance with Section 19.D of California well Standards <br /> Bulletin 74-90, and Section 13.17 of San Joaquin County Environmental Health <br /> Department's Well Standards. The boreholes will be grouted using cement based grout <br /> material. <br /> Kleinfelder is prepared to assist Musco Olive Products in implementing the changes required by <br /> RWQCB. This addendum should be forwarded to RWQCB for approval. <br /> Please contact me if you have any questions. <br /> Respectfully submitted, <br /> KLEINFELDER,INC. <br /> A <br /> J0;ph D illes <br /> Sr. St ff Geologist <br /> Laurie Racca,R.G. <br /> Senior Geologist <br /> JDZ:md <br /> 9 <br /> Pa2 of 2 <br /> 20.2594-03.WP2f2011L.056 <br /> Copyright 2001,Klcinfclder,Inc. January 1 19,2001 <br />