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NEWMONT <br /> GOLDCORR <br /> Table U-1: Designated Chemicals <br /> Chemical Use at the Site Location Location for Typical Quantities Used and/or Stored on Site Secondary Containment Provided Fate of Chemical <br /> Name for Use Storage <br /> Sodium Cyanide Delivered to the VLFs, The sodium cyanide There are two holding tanks for sodium cyanide at the The offloading of cyanide occurs within secondary containment Is consumed in the dilute sodium <br /> site as liquid ADRs, and is delivered as a ADR1, two holding tanks at the ADR2, and one holding at the ADRs and HG Mill facilities. The holding tanks also are cyanide solution leach circuit—see <br /> cyanide and either HG Mill liquid to the ADRs tank at the HG Mill facility. located within secondary containment on concrete foundations next row for ultimate fate of <br /> mixed or direct- facilities and the HG Mill Each holding tank is 20,000 gallons in size. with curbing. The ADR1, ADR2, and HG Mill facilities are sodium cyanide process solutions. <br /> offloaded to the facilities via tanker At least one 7,500-gallon tanker is staged at each facility underlain by a geomembrane liner system for tertiary <br /> ADRs and/or HG truck. The tanker on any given day. containment. <br /> Mill facilities. Used truck parks within <br /> as a dilute solution containment during <br /> for leaching and mixing and <br /> product recovery. offloading to holding <br /> tanks. <br /> Dilute Sodium Barren solution is VLFs, ADRs, cyanidation, At each of the ADRs: Dilute sodium cyanide solutions have primary, secondary, and The VLFs will be rinsed as will any <br /> Cyanide Solution piped from storage ADRs and and CIP tanks in HG - Internal barren tank of 20,000 gallons tertiary containment at the VLFs, ADRs, and HG Mill facilities. tanks and lines that have <br /> locations to the HG Mill Mill and in PSSAs - Strip pregnant tank of 20,000 gallons Piping is within secondary containment or double-walled when contained sodium cyanide process <br /> VLFs and pregnant facilities within the VLFs. - Strip barren tank of 20,000 gallons outside of containment. See Exhibit D for complete details of the solutions. Dilute sodium cyanide <br /> solution is piped -Two Strip intermediate tanks of 20,000 gallons each containment. solutions are expected to <br /> from VLFs to -Two barren enrichment tanks of 80,000 gallons each at breakdown during rinsing. Upon <br /> ADRs. Dilute VLF1 only completion of rinsing, the dilute <br /> sodium cyanide 29,100 gpm being applied at VLF1 at a strength of less solutions will be treated with <br /> solution is used in than 250 mg/L sodium cyanide. hydrogen peroxide or circulation <br /> the HG Mill 17,000 gpm to be applied at VLF2 at a strength of less enhanced to allow evaporation of <br /> facilities to bring than 250 mg/L sodium cyanide. water. <br /> the gold into Solutions are continuously re-circulated between the <br /> solution from both VLFs and ADRs. <br /> the ground product At the HG Mill facilities: <br /> and the carbon. -20,000 gallons mixing tank <br /> 211 gpm (77 tons of slurry per hour) being continuously <br /> circulated within the HG Mill facilities at a strength of <br /> 2,500 mg/L sodium cyanide <br /> Sodium Used for pH control VLFs and Stored in liquid form 20,000-gallon tanks at each ADR Tanks are within concrete containment and also located on the Is consumed in pH control for <br /> Hydroxide ADRs at ADRs lined area of the VLFs. Concrete containment is equipped with a process solutions. <br /> (Caustic Soda) float-activated pump that would return fluid to the plant in the <br /> event of release. Outside of concrete containment releases <br /> would flow onto VLF liner systems. <br /> Cripple Creek&Victor Gold Mining Company Exhibit U <br /> Cresson Project Amendment 13 <br /> 3 <br />