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1*.. r <br /> • Again, two loads of fill sand was hauled to the site for fill from <br /> Brown Sand, Inc. , of Manteca on March 7, 1991. The first of these <br /> weighed in at 41,240 pounds and the second at 39,240 pounds. <br /> The haulage and weight records for this material are enclosed for your <br /> information as Attachment C. <br /> Using a factor of 2,700 pounds of fill dirt/sand/aggregate per cubic <br /> yard, a tabulation of the material backfilled at the Yellow Submarine <br /> site is as follows: <br /> Date: Source Type of Quantity (as Quantity <br /> Material reported units) (Cubic Yards) <br /> 02/08/91 Western Stone Fill Dirt 20 cubic yards 20 <br /> (Hickman) <br /> 02/08/91 Western Stone 3/4" A.B. 24.94 tons 18.5 <br /> (Hughson) <br /> 02/09/91 7/11 Materials Road Base 41,800 pounds 15.5 <br /> (Modesto) <br /> 02/11/91 Western Stone 3/4" A.B. 25.94 tons 19.2 <br /> (Hughson) <br /> 03/07/91 Brown Sand Fill Sand 41,240 pounds 15.3 <br /> (Manteca) <br /> 03/07/91 Brown Sand Fill Sand 39,240 pounds 14.5 <br /> (Manteca) <br /> TOTAL 103.0 <br /> It is clear from the above records that ample clean fill material was <br /> hauled to the site to replace the approximately 80 yards of contaminated <br /> soil which was excavated and stockpiled. <br /> I trust that this letter will settle all of the outstanding issues regarding <br /> the work plan submitted by WHF for well replacement at the Yellow <br /> Submarine site and that PHS/EHD concurs that the contamination was <br /> removed in the remedial excavation and only clean backfill was used to <br /> fill the excavation. <br /> If you have any questions or comments, or if you believe that all of the <br /> outstanding issues were not covered by this letter, please do not <br /> hesitate to call me. <br /> Thank you very much. <br />