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Environment; Inc. Page 5 <br />Albert Frei apd`$ons;,lnc.. <br />` Walstrum'Aggregate Quarry <br />~M.L.R:B'. Permit M-83-035 <br />Alan is"correct S53°E is,the correct number.. When we were on the <br />-site measuring the angles, we were measuring azimuths and Mr. Revey <br />.forgot to convert to a bearing. <br />- July 5 Letter- <br />. 6. This information is to clarify your highwall list regarding the <br />proposed mining and how.thE northern slopes will be created. The <br />1983-plan .as approved allowed for variable bench heights and width <br />as-you explain. Ths.plan will be used on all face area except <br />the northern side of the new area where-the 60' by 180' steps will <br />be cut and backfilled. In reviewing my notes from the Apri1.8, <br />2'002. inspection I concur with your measurements and description of <br />.areas measured with the exception of the west wall"areas. I <br />' believe these walls are part of the south sight berm, actually the <br />west facing part of the south berm area and not the actual "west <br />wall". The "west wall" is along the-old access road behind the <br />concrete-batch plan and scale house. I.used these number in my <br />bond estimate where they applied. <br />Concerning the north face area, please refer to Figure D-1 <br />- following the Mining Plan text for the areas Z discuss in the <br />fol'lowi~ng text. <br />When mining moves out of"the existing permit area into the new <br />area Frei will start in the area-shown as FACE. Along the south <br />side of this area is where .the current north highwall is forming. <br />_ ~ 'The plan-is to remove the small ridge in this area,-.down to a <br />level, equal with the current, floor. This will leave a flat area, <br />approximately 6.40 acres in size, that ends in the bottom of the <br />drainage the bears northeast from the northwest .corner of the <br />mined-area, The north side will be the existing slope below the <br />.east-west"road 'above the mine. The 800 foot long north wall will <br />have been removed during this process leaving a slope that will <br />match the upper slope. This slope will be temporarily reclaimed <br />until it is removed as mining progresses thru the. North Slope <br />area: ,Mining would then move into the.WEST"LAKE area moving east <br />to"wesi.then north following the mining direction shown on the <br />Mining Plan map: <br />As, mining ends on fhe WEST LAKE area it would move into the NORTH <br />SLOPE area where"the-large step benches (60' high by 180' wide) <br />would 'be'oonstructed. These are the benches that-will be <br />backfilled to create the 3:1"slope along that side of the mine. <br />' Based on the estimated reserves and projected production increases <br />it will take another 25-plus year to start".mining on the NORTH <br />" SLOPE area: This"may or may"not be a time when reclamation is <br />most expensive-but I believe it is far enough in the future for it <br />- to be cbsf prohibitive to carry a bond adequate to reclaim under <br />this scenario. for that length of time. <br />9. I discussed this with 'Alan and we decided that if i could provide <br />him with the data concerning blasting and bench creation he could <br />begin input and would call if he needed more information. TABLE 1 <br />' in the reclamation"cost estimate contains the base information he <br />needs. Table A is set up the same way. <br />10.- Since reclamation on the road will be concurrent with construction <br />the cost will be minimal., Attached are two scenarios for bonding. <br />~~eii ~-a~ .~'Pa..~:,,,~3r.~~"'m~..~s.~$isa.ax.uaYdze`s~` ''~*,~,~r.. ! .L. ".. .v,..-.~.::a,~~. - <br />