2008-04-15_REVISION - M1980244 ‎(351)‎

• Permit No: M1980244
• IBM Index Class Name: REVISION
• Doc Date: 4/15/2008
• Doc Name: Teller County Vol. 1, Attachment 4, 8.6 to 14.0
• From: CC&V
• To: DRMS
• Type & Sequence: AM9
• Media Type: D
• Archive: No

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Table 13-2 Toxic Chemicals In Use at the VLF and AD R/Carlton areas
Chemical Name Use at the Site Location for Use Location for Storage Typical Quantities Used and/or Secondary Containment P rovided Fate of Chemical
Stored on Site
Sodium Cyanide Delivered to the site in dry bulk and VLF and ADR The cyanide is delivered as There are two holding tanks for sodium The dissolving of the briqu ttes Is consumed in the
dilute cyanide
mixed adjacent to ADR facility. Used briquettes to the ADR. The tanker cyanide, each of 20,000 gallons in size. occurs within secondary c ntainment. leach circuit - see next box for
as a dilute solution for leaching and containing the briquettes parks At least one 7,500 gallon tanker is on The holding tanks are also located ultimate fate of leach solutions.
product recovery. within a containment surface and site to be staged and mixed within secondary containm ?nt.
the briquettes are dissolved in water
and pumped to two 20,000 gallon I
holding tanks.
Dilute Cyanide Barren solution is piped from storage VLF and ADR ADR facility and in PSSAs within Two barren enrichment tanks of 80,000 Dilute cyanide solutions h ve both The VLF will
be rinsed. Dilute
Solution locations to the VLF and pregnant the VLF. The ESP could hold gallons each primary and secondary containment at cyanide solutions are expected to
solution is piped from VLF to ADR. solution if needed in an emergency. Internal barren tank of 20,000 gallons the VLF and ADR facility. Piping is breakdown during rinsing. Upon
Strip pregnant tank of 20,000 gallons also within secondary con inment. completion of rinsing, the dilute
Strip barren tank of 20,000 gallons See Sections 6.0 and 7.0 of Project solutions will be treated with
Two Strip intermediate tanks of 20,000 Description for completed details of hydrogen peroxide and circulation
gallons each the containment. enhanced to allow evaporation of
29,100 gpm being applied once Phase 5 water.
begins leaching.
Solutions are continuous) recirculated.
Sodium Hydroxide Used for pH control VLF and ADR Stored in liquid form west of ADR 20,000 gallon tank Tank is within concrete containment Is consumed in pH control for leach
and also located on the lined area of solutions.
the VLF. Concrete containment is
equipped with a float-activated pump
that would return fluid to the plant in
the event of release. Outsile of
concrete containment relea
es would
?
flow into VLF system.
Hydrochloric Acid Used to acid wash carbon in carbon ADR Stored west of ADR in mixing tank 8,200 gallons stored in mixing tank 8,200 gallon Tank is double walled Acidic solutions which
have
columns Stored inside ADR in holding and 7,000 gallons in holding tank and within concrete contai#ment become neutralized through rinsing
concentrated tank 8,000 gallons in concentrated tank outside of ADR. I of the carbon and are not longer
Holding and concentrated tank are useable, these solutions are
within the ADR containment neutralized and are added as make
including concrete floor and curbing up water to leach circuit.
with sums and pumps.
Cripple Creek & Victor Gold Mining Company
Cresson Project Mine Life Extension
13-3