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A ~ • Mc. Peter O`Connor February 12, 1985 Page Three Exhibit G = Hydrology Noted. Exhibit H - Wildlife Division of Wildlife evaluation is in progress and will be forwarded when available. Exhibit L - Reclamation Costs Reclamation costs have been entirely reassessed and expressed using a different Format for simple interpretation. The previous format included some disturbances twice and seemed to be confusing. Operator agrees with your estimated costs and recommend increasing the .ripping cost of $50/hour to $60/hour for scarifying. One foot of topsoil or 1,613 cubic yards is accounted for - in:;tead of the eight inch estimate given by MLRB. Also, the operai:or gives mare explanation of mining and reclamation procedures for this particular site. Very little I~ackfilling will take place in this operation, as stated in the pE~rmit, due to the gravel seam thickness of 2 to 14 feet, with a 7 foot average. Overburden that is not useable aggregate is extr~icted and hauled straight to the 2 acre parcel being reclaimed. The loader extracts just what can ge to the crusher, leaving little, if any, material to be used for backfilling. This method of mining doesn't allow for grading since there is no overburden t.o be replaced. Proper compaction and seedbed preparation will bey accomplished as the topsoil is laid down with a scraper or end loader. This also applies following scarification of the plant site and roads. After the ground surface is broken up, topsoil can be spread, mixed in and effectively take hold. This method is more effective than grading, and compacting, which allows topsoil to be susceptible to sliding after it is laid down. Spreading topsoil on this slightly rough and variable surface also provides the best seed bed and aids in mositure retention, preventing possible erosion problems. If you have any questions regarding these methods or costs, please call.