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., iit+r ua try UJ: J1N u..~,u auu ...,~~.. .. u. ...... ..~.a. ~.... .,..., r.. <br />~~ '~ <br />SANDCO INC <br />PO BOX 4440 <br />DURANGO CO 81302 <br />Telephotse P[,ANT: 970-247-1303 Boukkccping: 970-247-9331 <br />Fax PLANT: 970-3g2-9220 S~wkkeeping: 970-247-9336 <br />March 26, 2004 <br />~c 1 Yer Access Road Construction Plan <br />Aerxss road coashuryion nerd removal for the river crossirts wilt be done at low <br />flow times of the year only. This timeframe gctrcrally begins lxtween the months of mid <br />October through mid Abvember and cads between the momhs of mid March tluotrgh mid <br />April of each year. Low flow volumes average between 200-300 C.S.F.. <br />In close proximity to cross scaion dl t (attached and drown on overview ar~d <br />profile maps), as access road will be casstrrxted across the Animas River. This mad will <br />provide access and transportation for the material from the lake area on the east side of <br />the fiver to the existing procxssing site on the west side of the river- The road will be <br />coostrtrcted in late felt during the low flow period mentioned above. Removal will take <br />place hefore any signifitum increase in flow, which normally occurs mid March through <br />mid April. <br />Construction of this road will begin on the east side of the river and proceed au~ct. <br />Native, riverdeposited materia! from the proposed lake area will be placKd in Ilse river <br />concstrzeotly with a series of large culvert pipes (refcrrnccd in cross-section plan map), so <br />as not to restrict the flow of ware. Placement of the pipes and then the gravel will be <br />done from an above water location (approxiraetcly finished road grader m order to <br />minimize any chazutel disturbance. Road taatrriat will be plied oo top of the pipes and <br />or the road and they graded; never dumped wholly or directly itt stream. Upon <br />completing construction, the road wilt be finish graded for hauling material. The fmishr'd <br />mad grade twmpaction shall be acwmplished by mobile egaipmrnt traveling oa the <br />surface. <br />Removal of the road tnateria! will begin on the east side and proceed west. The pil <br />run material used to txrver the pipes will be excavated with a track hoe and loaded iron <br />dump truck end hauled to the processing size on the west side. With culvert pipes ~w <br />exposed, they will be IiPoed and transported back ro the east side for the folh7wirtg season <br />inslallatioa <br />In reach of the Dalton Pit, the Animas River sediments race comprised of <br />approximately three percent by weight of materials that are stnaller than a 200 mesh <br />sieve, with essentially none of the material in the clay size. From this it follows that a <br />very smatl amount of trmterial is ever available to prodtrce sediment pollution. <br />TDTLiL P.01 <br />