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TECHNICAL REVISION <br /> M-92-054 (112 operation) <br /> La Boca Pit <br /> March 20, 2017 <br /> Submitted by; Deb Koenig, Reg Compliance Mgr, Crossfire Aggregate Services LLC (CAS) <br /> For Todd Fisher, Landowner <br /> Crossfire Aggregate Services is requesting a Technical Revision to the reclamation plan on <br /> behalf of the landowner,Todd Fisher. Mr. Fisher is requesting to amend the reclamation plans <br /> for Phase D and Phase A of the mining plan.This request is based on an improved resource <br /> management plan for land use post-mining and cleaning up after a previous unapproved mining <br /> operation by another operator. Below are the revision requests for each phase. <br /> PHASE A: Prior to CAS leasing the mine property unauthorized mining had taken place in Phase <br /> A of the mining plan. Recycled concrete was also hauled in to this area and stock piled. This <br /> area was never reclaimed by the previous mine operator. <br /> Concrete will be broken into manageable pieces, steel reinforcement will be bent to eliminate <br /> migration to the surface. Concrete pieces with steel reinforcement will be carefully placed steel <br /> side down to also eliminate migration to the surface. All concrete will be buried at a minimum <br /> depth of 3'. <br /> CAS will reclaim the area east and southeast of the Hydro-Vac pit. The Hydro-vac pit shall <br /> remain. Reclamation will consist of re-sloping to tie into the surrounding native area by pulling <br /> native material from the southwest and east to construct slopes of no more than 3:1. Slopes <br /> will be reshaped in an inconsistent rolling hill manner to mimic the native surrounding area and <br /> to reduce erosion. A minimum of 6"of topsoil will be placed over all these disturbed areas. <br /> Stormwater will be controlled onsite by placement of diversion ditches and Stormwater BMP's. <br /> A Stormwater catchment will be placed onsite to collect Stormwater and sediment from the <br /> disturbed area. Diversion ditches will be constructed around the northern perimeter to prevent <br /> offsite flows from entering the newly reclaimed area. <br /> The site will be reseeded with a mix of Crested Wheat at 7.5 Ibs/acre PLS and Western Wheat <br /> 4.8 Ibs/acre PLS.A cover crop of Annual Wheatgrass will be added at 10 Ibs/acre PLS.This will <br /> be used to assist in site stabilization and to reduce weed growth. <br /> Weed infestation will be managed by application of herbicides and mechanical mowing. <br /> All work will be performed by mechanical means using dozers, excavators and haul trucks <br /> where necessary. <br />