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r <br /> Mr Steve Schneider <br /> SJCPHS <br /> October 8, 1992 <br /> Page 3 <br /> n) After the excavation has been filled to 10 feet below grade as provided above, soil from the <br /> stockpile meeting target criteria may be placed into the excavation to complete the backfilling <br /> process Manna Pro will endeavor to place soils represented by composite samples with the <br /> lowest concentrations near the bottom of the excavation <br /> w) Because of the use of clean fill in the bottom of the excavation, all of the excavated <br /> sods will probably not be able to be placed back in the excavation Therefore, soil <br /> meeting target criteria for which there is no room in the excavation, will be spread out <br /> either on the vacant lot at the southern end of the property or on vacant land at the <br /> northern end of the property near the area designated for the on-site sod treatment <br /> Manna Pro understands that these soils will be considered non-hazardous, will not be <br /> subject to further treatment or other requirements, and neither SJCPHS nor RWQCB will <br /> take further action with respect to them <br /> Additionally, it is understood that if this plan is approved, future excavation of impacted in-place sods will <br /> not be required by SJCPHS or RWQCB as part of overall site remediation Manna Pro requests this <br /> assurance because the activities described in this plan would not be cost-effective if future excavation of <br /> in-place sods is required Manna Pro plans to perform in-situ remedial measures for the Impacted in- <br /> place sods <br /> Manna Pro assumes that approval of this addendum and the associated work plan constitutes all of the <br /> permission necessary to perform the described activities <br /> We hope these clarifications and revisions will satisfy SJCPHS and RWQCB Manna Pro would like to <br /> begin this project as soon as possible to take advantage of the weather, and have the excavation <br /> backfilled before the rainy season begins If you have any questions or comments, please call either <br /> Dean Willis of O'Melveney & Myers at (213) 669-6000 or me at (510) 671-2387 <br /> Sincerely, <br /> GROUNDWAT NOLOGY, INC <br /> 1 <br /> Richard MJ <br /> asserHydrogeoanager <br /> cc Ms Elizabeth Thayer, RWQCB Central Valley Region <br /> Mr Dean Willis, O'Melveney & Myers <br /> Mr Larry Chapman, Manna Pro <br /> • MPWPADo 2 <br /> GROUNDWATER <br /> TECHNOLOGY, INC <br />