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GENERAL50474
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GENERAL50474
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Last modified
8/24/2016 8:36:55 PM
Creation date
11/23/2007 5:58:43 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981015
IBM Index Class Name
General Documents
Doc Date
9/30/1992
Doc Name
PROPOSED DECISION AND FINDINGS OF COMPLIANCE
From
Reclamation Only
Permit Index Doc Type
FINDINGS
Media Type
D
Archive
No
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2. Any discharges from the mine sediment pond will be monitored <br />in accordance with the mine's NPDES permit, and the results <br />of such monitoring shall be submitted to the Division on a <br />quarterly basis. As a result of this monitoring, quantity <br />and quality of discharges from the permit area will be <br />recorded. <br />No other surface water monitoring will be conducted at the <br />site. All surface water runoff within the permit area is <br />routed into an ephemeral drainage ~,ahich passes through the <br />sediment pond. No other drainages are affected by the <br />reclaimed site. Any water that discharges from the pond <br />would flow down Dry Gulch for appro~cimately three miles <br />before entering Blg Salt Wash. <br />G. Transfer of Wells <br />All drill holes in the permit area are required to be <br />reclaimed prior to bond release (4.05.14). <br />H. Probable Hydrologic Consequences <br />A discussion of the probable hydrologic impacts of the reclaimed <br />Fruita Mine site is included with the baseline discussion in <br />Sections 2.04.5, 2.04.6 and 2.04.7 of the permit. <br />Surface Water <br />The Fruita Mine is located in the Bookcliffs on the north edge of the Grand <br />Valley. The area is <.emi-arid, receiving an average of less than ten inches <br />of annual precipitation. The permit area is located on steep south facing <br />slopes of the Bookcliffs and contains one unnamed ephemeral drainage. Water <br />fioY+ing do~.an this drainage from above the mine is diverted around the mine <br />benr.n and rill >lope by two permanent diversions which are designed to carry <br />runoff `.'om a 100-year, 2a-hour storm event. Surface runoff from the <br />disturbed area is routed to a sediment pond downhill from the mine bench. <br />Any discharges from the sediment pond are routed into Dry Gulch. Dry Gulch is <br />an ephemeral tributary to Big Salt Wash which is located approximately three <br />mile; downstream from the mine. Big Salt Wash is the Hoare>t stream that <br />could potentially be affected by the Fruita Mine. <br />big Salt Wash is a oerenn~al stream; however, surface flows have dried up in <br />•~~ fa" :f -.tie fast three sears •:198a-91~, probably uue to lower than average <br />_ a:'o~tar Vin. ~ pc,~ion cf Sig Salt ,~as.r flew is diverted 'nto Rub_~, '_~e <br />c '" uGit~~eam r-fin its '~~nC:~On ~.a'th ~~ry 4idih. )peC'fi~ COn7JC;~. .ii•y ~f <br />big Salt Wash water just above the Ruby Lee takeout point is generdi~y in the <br />500-600 umhos/cm range at high flows and 1000-2000 umhos/cm at low flows. <br />Ucwnstream from the mine, Big ;alt :•lash might be characterized as more of an <br />intermittent stream channel according to obseivatio~s b_v the 3w'?au of Land <br />Management. Surface flaw- hive been nCne.<iStPrit during the fall of recent <br />edi>. ~UStd1nP' 'rOY/T 'f~ ~ ~? Wd)~' bei T•J the Hlgh'lne !d'la~ ire primaril,; due <br />t ~ iPtUrn flows cf ~ i 1i!dt'•:.~~ Ware`ipiq the Canal. ~h2 .~3>^ ~=rn'i5e5 the <br />Canal appruti~ate'~, ten miie~ downstrea.+ from the mine. <br /> <br />
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