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GENERAL48553
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GENERAL48553
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Entry Properties
Last modified
8/24/2016 8:25:08 PM
Creation date
11/23/2007 4:23:46 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1994117
IBM Index Class Name
General Documents
Doc Date
11/14/1995
Doc Name
COM INC-GOLD HILL MILL-STORMWATER MANAGEMENT PLAN-SWMP PN COR-040073
From
DUFFORD & BROWN PC
To
WQCD
Media Type
D
Archive
No
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<br /> <br />Gdd ft10 MW 9totm Waavr !liaoageoeat P1se lhteier 24, 1995 <br />coded with a high density polyethylene litter. The entire pond area hers been lined with <br />e chary mil polyethylene liner. Fxxss wets from storm runoff is decanted from the <br />pond through rivers on a decant line that sits above the ceilings sand. The water drains <br />through a PVC discharge pipe that goes into an old max tunnel (Hazel A) nisi u <br />bulkheaded near the portal. The storm nmoff water is rtcycled from the storage in the <br />tunnel to the mill to be used es process water makeup. Fxcesv gtotmdwater and srocm <br />watery stored in the Hazel A is ptmrped beclt to the tailings pond for evaporation. <br />The following atlas are subject to the SWMP guidelines (stormwater): <br />Acts 3 -the area above the tailings pond (Area 2), between Ateav 2 and 5 u used for <br />storage of mill maicttarence equipment Drainage from this arts u directed by a berm <br />end ditch into the sediment clap in Arts 4. <br />Area 4 -The area to the northwest of the mill building tttsi commingles with runoff water <br />from the east side of the mill building roof end water from the road on the east side of the <br />mil! building Starts water is collected in a sediment trap that is located at the bottom of <br />the roadway southeast of the tailings pond Any overflow goes overland ersd eventually <br />may go into Cash Gulch. <br />Arta 5 -An undisturbed arcs whidt has all storm roster drainage directed into a ditch <br />above Area 3 and around the twrtheast side of the tailing, pond The water u ditecterd <br />into a small Swale and into the Cash Gulch drainage. <br />3. Site <br />Exhibit A shows the Gold Hill Mill and drttinagesnto Cash Gulch (uttamitteru), end Gold <br />Run Credo and the location of the mill with to reads and the omtununity of Gold <br />Hilt.. <br />The rsresent. firhrrn mmr lFxhihit Rl shun t}k site hrnmdmira o~rca rrwcla mill blllldtng <br />__._ r..__ _._._._ _~ ~____~ ..~ ___.._ ___ ._._ _ ___~_.., _..___ _.__, __ <br />periung arts. stooge erttt, l7illr1g7 Pond, talling7 docaru lux end pumpbadt Irrre, divetsteR <br />ditches for imdisna~bed dcaitteoe, sediment trap end outfall and boutrdarin of areas subject <br />to effluent limitation gcridelirtes. <br />4. Deoieaiow oiPatayid PolJrtaw! Sor~oarQNadeid IRVatosv <br />on is dumped in biro oubide the mill building Storm water can Hoer through the ore and <br />come out the bottom discharge of the biro. 'there is a potential fat developing acid weer and <br />Picking uP heavy melds end scLaQendod solids in the discharge. 'ihe disch$8e Haws dawn <br />the socttttemt side of the mill building ¢uo an area that ss harmed std hen a.french drain that <br />carries storm water to the tailings pond <br />Storm runoff from the unpaved paridrg arts graded on the old mine waste dumps cart develop <br />acid water end pick up heavy metals and suspended solids from the damp. The storm water u <br />collected et the bottom of the paridng area in a betmod area and the (tench drain syst® <br />carries the avatar W the tailings pond <br />All chmricala vaed in ore paocwitµl, such m soda seh. pine oi], ertd >oDtt}>ate aro stored <br />inside the mill building in enclosed containers. Thee u a potential for spills of the <br />
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