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<br /> <br />July za, 1979 <br />Page $ <br />Mr. Mohr <br />_ slope of 2:1 with steeper slopes between berms? <br />~' The;a~p°lieant must show the detailed.final;.,grading,conFigurat.ton <br />'"• on a°map:~ ~A11,~,redisturbed-ar,@,a&•should be;gr~,Q.ad ~`s neatly es <br />poss)ble:ta retreats.-tha,or3ginal.;~o~~pQrs, ,Any;depa.rtures <br />from the fundamental performance standard shouldbbefiil~y <br />explicated. <br />(b) WeVenill compaction and layering be accomplished. Where will <br />cover material be taken from. How will this area be treated during <br />~~ =r+eaiamatlon, is this the plv)~,.efuse disposal area? What will become <br />•'~"of~the existing 'refuse dispos 1 end coal storage area. <br />717:13 The applicant is refered to Section 715.15a in addressing refuse <br />disposal. <br />717.17 <br />(a) Impounding all drainage from the entire 77 acrelwater shed will <br />result In an overly large sediment control system. We recommend dtverslon <br />e$='ilNlffected drainage away from the affected area, <br />(b) Water sample must be taken at least weekly when tbb system discharges. <br />,(e) Water diversions may be .recommended following a sitbevtstt early <br />'~ in August. <br />(i) Where will energy dissipa4@rs and discharge structures be used. <br />How will they be disignad7 <br />(g) How will water 6e separ7tted from refuse - specific drainage control <br />plan should be provided for this area. These materials are to be burled <br />~~\ within 30 days if subject to rind and water erasion. Where were <br />~'ex exploration holes drilled. What tnformaalon was ~btalned during this <br />~j exploration program, which bears upon site geology overburden composition <br />and groundwater hydrology. <br />(h) A groundwater evaluation will be required which is consistent with <br />this liectlon before the monitoring requirement can be waived.' A spring <br />inventory, and water analyses from samples collected In the mine should <br />be done Immediately, A survey of wells In the ninedarea should be <br />performed to see if the formations proximate to the coal are currently befog <br />used/. All future exploration drilling should include hydrolggc evaluation. <br />(i) The state engineer has said that water rights may be regafedd. <br />(J) Detailed design calculations will be required for road drainage <br />as well as for sediment ponds and dtverslon dttbhes. - <br />1~....r gal <br />