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December 17, 2004 Page 4 Estella B. lmpold MIviRR Quarry Proposal i1M-'_*004-067 Additional Comments ACCESS ROAD: Enters the public Highway 119 at right angle. This print is emly 350 (eet below where trams mining dawn 119 rums the bend w the right and sees trucks mmin_ in and out of the mine awe rrtad. I see rxt way that the truck traffic can be safe for other uaveling w and from Blackhawk. DOT wrwld (rave w pmt signs to slow all traffic nrar this intetstxtion point. I c5rutot Cind in the proposal how many tntcks of rxuched rock or empty tracks will be going in and out of the access road per day. I do see the statement that up w throe huge water trucks will be entering and then leaving the mine access road every rtty. The applir:mt should tel l what the traffic estirn:itess are Cor minim ar;e~ss. ACCESS: Fain Map Exhibit C-1 we see the path of an existing tmp;rved road ("Interim Haul Road°) that follows nexthwestward ztossing inw BI.M htrtd and Goltra private properi}'. If dte ivtlvII2 Qectm~ antizipates rainy this road to get their exluipment up tbe the area above the Waste Rock area (NW 1/4 Sec. 2fi), they intro obtain formal petmisstion for access from BLM and frr~ Golun. 7TC[I_.rTIFS: Near Highway 119, below the remptrmry Sediment Pbad, the mine are( drainage intersens w~[h the Highway. The culvert under 179 for the ephememl strram stn easily ge[ full of silt, leading w 17otxling above and onw the Hiwa}' 119. SEWAGEFSANT LINE Belotv Hiway 179, what arningemen~ are beine made for the altered stomiwater flow (stream) causing of the mine drainage with the sewage plant lute under consuuction> On `°L`riticd X Sections Prtxxessing Plant Area": No section litres are shown so it is hard w place the (oration with respect w the ephemeral streams. DRAINAGE laraste Rock Pile: Exhibit G Mr. Wolf plans on Tilling the naiturl drainage above the srdiment pond {Sec. ZCi) with exr~ tack and material Trom prrx.~ecsing plain area ]f he permits the natural drairrane w fiorv TINDER [rte waste nxk pile, there will be a large amount of suspended solids moved doting strxms. IChe dim "dctitrtige ditches"on rash side of the waste rrx~l: pile as suegested, it will be in steep [opmmphy and digging into rock; the cost will be great in Leans o1 time and ener~v w do that correctly {w avoid future overCiow, tx running the water «nder the waste rock pde). No depth for these ditches is suggested. Scale Cor thickness oC the Waste Rex:k pile (Section B-B') is rw[. cleat: The point at the foot of the Waste Rock area where the original drainage comes otr[, shows a "sedament pond"( 30x40 ft), but no depth is given, and there is no way to determine if that size pond will be adequate over the 10 year period to catch suspended solids from entering Clear Creek. Ditches: The size of the Waste Rock Area is only 200 ft wide in f g. C- B? but is expanded to more than 600 ft wide and goes farther upstream in Exhibit C-2C. So the "ditches" around the expanded Waste Rot:k Pile area will have to be re~ug, and moved trpslope to accommodate. Text does not describe this. Will they? Stormwater collection area: With the expanded new mining area opened try to the northeast, an area 1,500x900 feet will now drain dixvn the ACCESS ROAD like a funnel and come out either at the original drainage path into the culvert , or it will travel down the access road and into the ditch along Hiway 119. The "Sediment Pond" is gone from the diagram, so the flow is unimpeded into the culvert and North Clear Ctzek. The question