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NEWMONT <br />GOLDCORP.. <br />6 PRECIOUS METALS RECOVERY FACILITY <br />The existing precious metals recovery facilities include the Arequa Gulch Absorption, Desorption <br />and Recovery (ADR1), the Squaw Gulch ADR (ADR2) and the refinery, which is included in the <br />ADR1 complex. ADR1 is located on the south side of the VLF1. ADR2 was constructed pursuant <br />to Amendment 10 to provide gold recovery from pregnant solution from the VLF2. No change to <br />either facility is anticipated as part of this Amendment 13. Pregnant solution generated as part of <br />VLF2 Phase 3 will be pumped to ADR2 for recovery. Both facilities are shown on Drawing C-2. <br />6.1 Chemical Usage at ADRs <br />The same chemicals currently permitted for use will be used in the ADRs as part of this <br />Amendment 13 and are described below. <br />Activated carbon is used in the adsorption process to pull gold from solution and reactivated, as <br />needed, by burning at high temperatures using the reactivation kiln. The activated carbon is be <br />shipped in bags and stored outside of each ADR building. <br />Hydrochloric acid is used in a dilute form to remove scale that builds up on the carbon from the <br />pregnant solutions and is disposed by neutralizing with sodium hydroxide and adding to the <br />makeup water for the barren solution. Acid is delivered by tanker trucks to each ADR and is stored <br />in a fiberglass reinforced plastic mixing tank located within concrete containment. Acid tanks are <br />equipped with an acid scrubber to remove acid vapor that would be released during filling or tank <br />expansion due to high ambient temperatures. <br />Sodium hydroxide is used to neutralize hydrochloric acid solution prior to reuse of the water for <br />makeup water and is used to maintain the pH levels above 10 during carbon stripping. Sodium <br />hydroxide is delivered by tanker trucks and stored within concrete containment area in a tank of <br />approximately 20,000 gallons. <br />Sodium cyanide is used in a dilute solution to pull gold from the carbon during carbon stripping <br />and is added to barren solution to dissolve gold during heap leach operations. Once the gold is <br />removed by electro -winning, the dilute sodium cyanide solution is recycled as barren solution. <br />Sodium cyanide is delivered in liquid form by truck to the site in USDOT-approved containers. <br />The containers are positioned on an unloading area which is surrounded by a concrete <br />containment berm and is adjacent to the ADR buildings within lined areas. The solution is <br />transferred from the containers into storage tanks that are within the containment. <br />Cripple Creek & Victor Gold Mining Company <br />Cresson Project Amendment 13 <br />22 <br />Exhibit D <br />