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MRY. 5.2000 8~36RM DIViMINERRLS&GEOLOGY N0.709 P.3i3 <br />• • <br />Memo to Grebe Sguire 2 May 0..2000 <br />3. The Applicant has misstated the low flow season as occurring betaeen October In end May 16` of <br />each year. As stated in the Division's adequacy review memo dated April 13, 2000 the low flovy <br />season is defined as the period firom October lr` to April !" of each year. The potential for flooding <br />in April is too significant m consider it a pazt of the low flow season. <br />4. The Applicant states that the maximum encroachment azea into the river sotbaek that will occur in <br />any given low flow season will be 3 acres and farther states that sufficient backfill material will be <br />present on the site at all times to backfill any low flow season mining areas. The Division must <br />hold sufficient bond to backfill the maximum specified encroachment area, but no line item for this <br />backfilling job is included in the Applicant's revised reclamation cost estimate. The amount of <br />backfiA required fora 3-actrr area at 32 feet average depth is 155,000 cubic yards, Using the <br />Applicant's proposed backfilling unit cost of $1.25 per cubic yazd yields a direct cost for this task of <br />$193,750.00. This amount must be added to the direct recleatatioa costs in the revised estimate. <br />c;\tyindows\pm~onellrivaA~d2.doc <br />