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3) The Division understands the proposed expansion areas include undisturbed hillside (besides the two <br /> mine openings) which are not anticipated to be disturbed by the operation. However, the proposed <br /> backfill plan for the Black Forest mine openings is not part of the current approved reclamation plan, <br /> and therefore, additional details on this plan are required. The revised reclamation plan proposes two <br /> potential backfill plans for the mine openings, including a Rockfill plan and a Soil Cement Backfill <br /> plan.In order for the Division to calculate the required financial warranty for the proposed reclamation <br /> plan,the operator must commit to implementing one of these backfill plans and provide the additional <br /> required information on the plan in this exhibit and in Exhibit L. If the operator decides to implement <br /> a different backfill plan after AM-5 approval, this plan must be proposed through submittal of a <br /> subsequent permit revision to update the reclamation plan and bond estimate accordingly. <br /> Because the bond estimate provided in Exhibit L appears to correlate with the Rockfill plan, the <br /> Division will refer only to this plan at this time. However, if the operator chooses (in AM-5) to <br /> implement the Soil Cement Backfill plan, please know the additional information requested in this <br /> exhibit and in Exhibit L for the Rockfill plan must instead be provided for the Soil Cement Backfill <br /> plan. <br /> Please provide in this exhibit the following additional details on the Rockfill plan: <br /> a) Please provide an estimated volume of material (for each type of material proposed) required to <br /> backfill the Black Forest mine openings. <br /> b) Please identify the anticipated location on site from which the large diameter rock(< 1 foot) will <br /> be derived. The Division requires this information in order to estimate the haul/push distance for <br /> the bond calculation. <br /> c) Please identify the anticipated location on site from which the Common Fill will be derived. The <br /> Division requires this information in order to estimate the haul/push distance for the bond <br /> calculation. <br /> d) Please provide a general description of the anticipated Common Fill material to be used for this <br /> project. <br /> e) Please provide an estimated volume and placement depth of Plant Growth Medium to be placed <br /> on the backfill area. <br /> f) Please identify the anticipated location on site from which the Plant Growth Medium will be <br /> derived. The Division requires this information in order to estimate the haul/push distance for the <br /> bond calculation. If the operator anticipates importing growth medium to the site for reclamation, <br /> please state as such in this exhibit and be sure to include costs for importing this material in the <br /> Exhibit L bond estimate. <br /> g) Please provide an estimated acreage to be seeded in the backfill area. <br />