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December 17, 2(104 <br />Page 4 <br />Estella B. l,oopold <br />MMRR Qtrury proposal <br />#M-20[14-067 <br />Additional Comments <br />ACCESS ROAD: F.n[ets the public Highway t 19 at tight angles. This point is curly 350 feet below when: <br />[collie rx~ming drnxn 119 tunic the bend Lo the tight and sees trucks coming in and cwt of the mine aocesa <br />road. 1 see noway that the truck [collie can be safe for others traveling to and from Blackbawk. DOT <br />would have W post signs W slow all traffic near this inoerser:tion point. [ u-tnnut firm in the ptoptr3al how <br />many trucks of crushed lock or empty uttcke will be going in and atu of the access reed per day. I dct see <br />the statement that nP to three huge wafer trucks will be entering and [ben leaving the mute access road every <br />rbty. The npplicmt should tell what the traffic estimates ate for mining atxxss <br />- - -- - - ACCESS: From Map Exhibit C-1 we see 1 tl~e path of an'eaisting unpaved aiad(`InteiimZ~a-fir Road"} twat- - <br />fdlwca notthwestwarel cr~sing into B[.M lartrl aml Gdtra private ptuperty. [f t~ MMR Quarry antic ipntes <br />using Wis rrnad to get their equipment up the the area abtwe the Waste Rcxxd; area (NW 1!4 Sec. 2()i ,they <br />muss obtain formal permission for access [ram BLM and frmt trdtrs <br />tTl'[LTTIFS: Near Highway 119, below the eemporary Sedrmeat prod, the mute am drainage intes_sects <br />with the Highway. The culvert under 119 for the ephemeral stream rtn easily get frill of si141eading to <br />flooding abrwe aril onto the Hiway 119- <br />SEWAGE PLANT IdNE Below Hiway 119, what annmg~en~ are being made for the altered stormwatra <br />Bow (stream) crossing of the mine drainage witb the sewage plant line n»der construction? <br />On `(Sitiwl X Sections Processing Rant Area": No section lices are shrnvrt so i[ is hard [o plwe the <br />location with respect to the ephemeral streams <br />DRAINAGE <br />Waste Rock Pile: E?Jtibit G Mr. Wo)f plans on filling the natural drainage above the sediment <br />pond (Sec. ~) with excess rock acrd material from proc~csing plain area. if he permits the naturel drainage <br />b flow 17NDER the waste nick pile, there will be a large amount of suspended solids moved during storms. <br />B he digs "dtaimtge ditclces on each side of the waste nick pile as suggested, i[ will be in steep topography <br />acrd digging into rack; the cost will be great in terms of time acrd energy w do that correcily (to avoid ftuure <br />overflow, a coming the water under the waste rock pile). No depth for these ditches is suggested. Scale <br />for tbir:laess of the Waste Rock pile (Secrton B-B') is cot clear. <br />The point at the frwt of the Waste Rock area where the original drainage ovmts out, <br />shows a "sediment pond"( 30x40 ft), but no depdt is given, and there is no way to <br />determine if Chad size pond will be adequate over the l0 year period to catch suspended <br />solids frrxn entering Clear Creek. <br />Ditches: The size of the Waste Rock Area is only 200 ft wide in fig. C- B? but is <br />expanded to more than 600 ft wide and goes farther upstream in Exhibit C-2C. So the <br />"ditches" amid the expanded Waste Rock Fite area will have to be re-dug, and moved <br />ttpslope to anrommodate. Text does not describe this. Will d-ey? <br />Stormwater rwllection area With the expat>deri stew mining area opened ttp to the <br />northeast, an area 1,500 x 9(10 feet will now drain down dte ACCESS ROAD like a ftmnel <br />ao<I come out either at the original drainage path ittto the wlvert , or it will travel down the <br />access road and into the ditch along Hiway 119. The "Sediment Pond" is gone from the <br />diagram, so the flow is unimpeded into the culvert and North Clear Creek. The question <br />