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06-26-2000 07:49RM FROM J. E. STOVER 8 RSSOCIRTES TO 101089919702475104 P.02 • Angie Pit Adequacy Response Letter Page 2 17 Generally, material becomes compacted during the backfilling process, as does the pit floor. The reclamation plan will need to included provisions for rlpp/ng compacted areas prior to placement of topsoil. Additionally, with the sandstone layer underneath the gravel identified as an aquifer, the reclamation plan must ensure that a minimum of two feet of cover remains over the sandstone for final reclamation. The operator cornmiu to ripping any compacted areas of the pit and, if the sandstone layer is exposed, the operator commits to placing 2 feet of cover material over the sandstone before final reclamation. If the sandstone layer is not exposed, due to the presence of groundwater, the operator will leave a minimtmm of 2 feet of material over the ground water horizon and it will remain in placo at final reclamation. 78 Does the maximum hlghwall length figures, provided jar each phase, include the "wing" areas adjacent to the advancing face, that have not yet been backfilled? If not, please indicate how far behind the advancing face the hlghwall backf:lling process will rake place. The operator conunits to keeping the slope reduction of the side slopes to within 300 feet of the advancing face. If the project does not provide sufficient material to maintain this slope reduction interval by filling methods, the operator will offset the projection for vertical pit excavation and construct the side slopes by cut and fill methods, taking care not to encroach upon the disturbance boundary. 27 It appears that the fences and access roads either partially or wholly owned by Ms. Allen are within 200 feet of the proposed affected area boundary in several places. Please ensure these structures are adequately addressed as required 6y Rule 6.4.19. A damage waiver for these structures has been verbally agreed to, and is currently being circulated for notarized signatures. This document will be forwarded to the Division by June 30, 2000. The Farmers Di[ch damage waiver agreement, supplied with the preliminary adequacy review response package, does not hove a notarized signature from the Farmers Water Development Company.... Tltis document will be forwazded to the Division by Juae 30, 2000.