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in most areas, preliminary investigation showed depths of gravel mostly in the 3'-ti' <br />depths. The 15' alluded to in the original application was only an indication that in <br />some areas, mining depths could be deeper. The intent in any final contours is to <br />assure that flow for Sandy Creek is maintained. <br />• A discussion of the channel bed elevation, or slope from the upstream limit of <br />extraction to the downstream limit of extraction. <br />When a profile of the stream bed was ran, it shows that the actual intermittent <br />channel drops approzimately 6 feet from the west edge of Area 1 to the east edge of <br />Area 3. See the attached profile. <br />• A discussion of the sequencing of how extraction will occur in the channel area <br />with extraction of depths of 5-6 feet below surface, vs. the non-channel areas <br />where extraction will occur at depths of 15 feet below ground surface. <br />Thin was previously discussed above. The channel area will be mined first in each <br />Area. Depths of mining are ezpected to be 5'- 6'. Removal outside the channel <br />rnnld vary anywhere from 3' np to a potential of IS' deep. Based on preliminary <br />investigations, depths will probably 6e more in the area of 3'- 6'. <br />• A discussion of the final reclaimed channel bed slope to occur at the upper <br />(upstream) and lower (downstream) limits of disturbance so that there is a smooth <br />transition fmm mined channel bed to un-mined channel bed. (The 17ivision <br />recommends the Applicant re-grade these transition areas to either a 4:1 or 5:1 <br />slope). <br />Mr. Larson does plan to transition the upstream channel bed and the downstream <br />channel bed. Transitions wifl be no greater than 4;1 mopes, hopefully allowing s <br />smooth transition for any future water flows. <br />6.4.5 EXHIBIT E -Reclamation Plan <br />2. Applicant has expressed an intent to mine the Larson Pit in three (3) distinct phases, <br />with the maximum disturbance to occur in Phase 1 with 33 acres of disturbance. In <br />conformance with Rule 6.4.5(2), please clarify the maximum volume (cubic Yards) of <br />topsoil to be stockpiled, maximum volume (cubic yards) of bacldll & grading required to <br />achieve reclamation contours, and acreage to be re-vegetated under tfiis 33 acre <br />maximum disturbance scenario. <br />Phase 1 has a total of 33 acres. In the original application we estimated that 7 acres <br />in Area 1 were inside the intermittent creek. However, in reviewing information for <br />response to this question, it appears that the creek area in Ares 1 ;s 12.7 acres. The <br />12.7 acres has no topsoil that will be stocl~iled. That balance of 203 acres ties <br />oafside the creek. That area has approzimate topsor7 of 5", ~atang a total <br />mazimum voh~me of topsor7 to be atockpfled of 13,755 cable yards. <br />2 <br />