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RECEIVED
<br />MAR 0 4 2002
<br />Division of Minerals and Geology
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<br />- `- • . Wash water I
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<br />input {~'C . ,
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<br />Mining Limit ' - --~ '
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<br />Slurry wall at'end ` '
<br />of Phase 1 % ~
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<br />Future sejt6m~ `;/ \
<br />- if used, locatiep--'"
<br />may change from.
<br />time to time.,, ;
<br />(Optional - ; •` '
<br />See Figural)
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<br />cattaiUpulrush
<br />swamp•=-_\ ~~„'
<br />settling \-' '; •,
<br />filter ~`~ ~`~
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<br />`~ y `\_ dual (or triple) stage ''
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<br />- sediment settling ponds ~.__
<br />~: \ with cleanouts
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<br />., ; '..Bounda
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<br />~ ` Lake _ I I
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<br />e ;y `.- (final settling) ~' ;
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<br />~ I \ '> • r -__' I;--•\ '222\ OUtfall ~~-'1- ~ ^ ; .:
<br />See Figure 2 for circuit diagram.
<br />Control Facilities Diagram
<br />and
<br />Operation
<br />1 At 'tart of operation, two or three settling
<br />pond are used across drainage from the plant.
<br />a. my top water leaves the ponds.
<br />b. onda must be cleaned frequently.
<br />c. op water mixes with dewatering water.
<br />d. I ombined water flows through a cattail
<br />and bi rush filtering swamp.
<br />e. Final settling occurs in lake before
<br />discharge to outfall point.
<br />£ L~1ew processing water is drawn from lake.
<br />I
<br />2. After sufficient mining is done, multi-stage
<br />settling ponds may be eliminated and replaced
<br />with a large in-pit settling pond (an Optional
<br />Plan !see Figure 2).
<br />a. In-pit settling pond will be confined to
<br />land l;hat will eventually be backfilled.
<br />b. In-pit settling pond is confined within high
<br />berm composed of overburden.
<br />c. Seepage from pond to pit floor results in
<br />nearly, clean water.
<br />d. seepage water mixes with groundwater
<br />infloi>~.
<br />e. All water is pumped to treatment facilities
<br />(swamp and lake filtering).
<br />f. Process water still taken from lake.
<br />3. Fi~tal treatment lake may need periodic
<br />cleaneut, if sediment reduces capacity. It may
<br />also ~e enlarged to the north.
<br />4. De~vatering input point may need to change,
<br />but o i tlet should remain nearly the same.
<br />East Pit -Transit Mix of Pueblo
<br />kl le: 1" =250' +/-
<br />cordour lntervai = 2' Figure
<br />I Processing Area Detail
<br />• ~ Permit Boundary
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