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0-.. COLORADO <br /> Division of Reclamation, <br /> Mining and Safety <br /> Department of Natural Resources <br /> Apri11, 2022 <br /> Andy Azacarraga <br /> M.A. Concrete Construction, Inc. <br /> 2323 River Road <br /> Grand Junction, CO 81505 <br /> RE. 32.5 Road Gravel Pi4 Permit No.M-2009-035,Proposed bond calculation <br /> Dear Mr.Azacarraga: <br /> On March 31, 2022 the Division of Reclamation Mining and Safety(Division) received your <br /> preliminary response to the Division's December 22, 2021 bond calculation. Based on the <br /> information provided the Division would like clarification on the following points. <br /> 1. Does the Operator accept the inputs figures used for remaining reclamation of the North <br /> pit? If not provide the linear feet length and slope grade of the current slopes grades. <br /> Clarify if any areas need to be ripped for decompaction or if areas have been topsoiled <br /> and seeded (in acres). <br /> 2. With regards to task 03a, application of gravel to the line ponds. The response indicated <br /> that up to 250 CY of material is yet to be placed. Does that mean that the rest of the pond <br /> (19,725 CY)has already been placed? Clarify what areas have had 6" of gravel placed. <br /> Alternatively omitting this requirement in its entirety has been mentioned. Provide an <br /> ETA of when that determination will be made. <br /> 3. A unit cost for gravel was provided in regards to task 03a. The Divisions cost did not <br /> include purchasing the gravel as it was assumed that material would be sourced on site. <br /> Only the cost for moving the material throughout the pit was calculated. That being said <br /> the unit cost of a material is fixed. Only the actual volume of material being moved can <br /> be adjusted. The Division acknowledges that many operators can do work or get material <br /> from cheaper suppliers however the Division has to use the unit cost obtained from the <br /> CAT and RS Means Handbooks. <br /> 4. Has the settling pond (task 04a)been reclaimed or is it included within the greater south <br /> pit figures provided? <br /> 5. Does the Operator accept the inputs figures used for remaining reclamation of the South <br /> pit,with regards to the acres to be topsoiled, ripped and seeded? If not provide the <br /> acreages of areas needing to be ripped for decompacti on, topsoiled and seeded. <br /> c°�o <br /> mow_ <br /> Room 215, 1001 E 62nd Ave, Denver CO 80216 P 303.866.3567 F 303.832.8106 http://mining.state.co.us <br /> Jared S. Polis, Governor I Dan Gibbs, Executive Director I Virginia Brannon, Director <br /> *1876�` <br />