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4210 East 11th Avenue <br />Deaver, Ce1or'dc 80220 <br />R.ATION,4LE <br />AMENDI~NT N0. S <br />WESTERN FUELS - UTAH, INC. <br />PERMIT NUMBER CO-0038024 <br />RIO HLANCO COUNTY <br />FACILITY DESCRIPTION: <br />By letter of July 27, 1987, the permittee has requested an additional outfall, <br />which would be used as an alternate discharge point for mine water. The mine <br />water is currently pumped about 1.8 miles to pond PP-2 where it is commingled <br />with shop and conveyor washdown, WTP reject water and WWTF effluent. The new <br />outfall would serve as a discharge point strictly for mine water and would <br />necessitate pumping only about 0.4 mile. Settling would occur in an 8 million <br />• gallon underground sump. The new outfall shall be numbered outfall 023. <br />Discharge will go to Scullion Gulch at a point approximately one half mile <br />above confluence with the White River. No livestock or wildlife typically use <br />Scullion Gulch along this stretch. Access to the majority of the gulch is <br />restricted by fencing. Sheep graze above the mine site, but not along or <br />below it. <br />GCf1. Ul1Ya a.y.lyln 1.1 vl'1 l:.rv.~lniJ. v..: <br />Scullion Gulch is parC of Segment 13a of the White River Sub-basin. Segment <br />13a has no metals standards. Thus, the discharge is evaluated against the <br />next Segment (12), which is the mainstem of the White River. <br />"i '_a... :(?_.;a-.` a X11- ~: ~'^.~ t;^..iro ~;..o_ ii c Lr <br />_,.. _ .., <br />• ~ -- - <br />,.-_.. _.._ _ _,_..___ ~=,_C-SCE ,.a_ ___~. ...c .._=. __, __:.~ __ =.._5 =_~e. <br />.or copse=vative approach, we will assume that the er,t_re i9,_00 gallons <br />(0.123 cis) could be discharged in a single day. This would yield a ratio of <br />1138:1. At this high dilution no specific metals limitations would be <br />necessary. Appendix A shows calculations for a few parameters to fllustrate <br />this point. Appendix B shows the results of two analyses of this water. The <br />only parameter of concern is total dissolved solids, which will be discussed <br />• later. <br />