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Topsoil to provide 33 inches thickness over Zones #3 and #4. Table 2.05.4(2)(d) -2A shows that this <br />required volume is 381,598 cy and the available volume of 393,629 is more than adequate. All <br />topsoil salvaged will be placed, therefore, if 393,629 cy is available, the final thickness of Lift B over <br />the area will be slightly greater than 33 inches. <br />Stockpile #15 will also be created from final cut stripping, which will be approximately 191,840 cy, <br />which will be used to reclaim Zone #4. <br />A small stockpile of Lift B material will remain after final backfilling and filling to reclaim Pond 011, as <br />shown on Map 2.05.4 -6. This is Stockpile #17, which will contain approximately 8,860 cy. <br />Mixed Topsoil <br />The total mixed topsoil available for the property is 132,271 cy from Stockpiles #5 and #6, and <br />27,906 cy from the 17 inches thickness placed in Zone 1 (12.21 acres) = 160,177 cy. <br />All the Mixed Topsoil will be spread evenly across the remaining disturbed areas (Zone 1 -3) that <br />have had subsoil placed, but still require topsoil. Calculations showed that the Mixed Topsoil will be <br />spread at an average 21 inch thick over Zones 1 through 3 (51.73 acres). The required amount to <br />do this is 150,309 cy. Therefore, the volume of 160,177 cy is more than adequate. <br />Bench 1 Subsoil Substitute <br />By utilizing some excess Lift B material to cover areas east of the existing pit, the area needed for <br />Bench 1 Subsoil Substitute material is lessened. Only Zones 1 and 2 require Bench 1 Subsoil <br />Substitute material. The required thickness is 33 inches over a combined area of 20.05 acres. For <br />this, 88,954 cy is needed. This material was already placed as of February, 2008 and it was actually <br />placed to a far greater thickness. The results of this testing revealed that the Bench 1 Subsoil <br />Substitute was primarily suitable for all tested criteria. Two samples exceeded the conductivity <br />standard by a small amount. This report is included as Attachment 2.05.4(2)(d) -1. It has been <br />revised in July of 2008 to include subsoil testing of pH and EC utilizing the paste method. Additional <br />results and discussion have been added to Attachment 2.05.4(2)(d) -1 to address the samples that <br />showed high results. Please refer to Attachment 20.5.4(2)(d) -1 page 18 for further discussion. <br />Revised PR 06 June 10 2.05.4(2)(d) -33 <br />