2018-08-22_REVISION - M1977493A - Laserfiche WebLink

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Technical Revision (TR-28) Climax Molybdenum Company Environmental Protection Plan Permit No. M-1977-493 Chemical Product Storage Tank Secondary Type & Name Storage Location Container Storage Containment Use Type Capacity Calcium pH Modifier Oxide (CaO, Lime mix area and 1 silo at the mill 225 tons Yes Lime, silo uicklime Iron and Sodium Reagent Area of Not currently Copper Cyanide Mill NA in use NA Depressant NaCN Water Treatment Chemicals GreatFloc 3,500 and 5,500 Flocculent 5500, DAF10 SDP and PDWTP 3,000 gallon gallons Yes or similar pH Adjustment, Calcium Lime Station, SDP, Hydroxide Oxide (CaO, 3 Dam Pump Lime silos Yes precipitation Lime, Station, PDWTP of metal quicklime) ions pH adjustment Sulfuric Acid 4,300 to meet (H2SO4) PDWTP PDWTP gallons Yes discharge standards Detailed information regarding effects on human health and the environment is found in the MSDS data in Appendix T-B. T-3.2 Designated Chemicals Information T-3.2.1 Collector A collector reagent 'collects' the molybdenum in a froth flotation extraction process allowing the molybdenum to float to the surface of the floatation cells. Nalco TX 9866 or Calumet Hydrocal 60 (or similar) is used as a collector reagent in the milling process. Nalco TX 9866 and Calumet Hydrocal 60 are combustible petroleum distillates and a skin and eye irritant. In the environment, the collector reacts similar to other petroleum distillates and can cause short-term damage to terrestrial and aquatic ecosystems Spills should be contained with inert absorbents, and contaminated soils should be removed. The collector is stored in one tank with a capacity of 13,500 gallons, located in the reagent storage area of the mill building (see Mill Building Detail -Area 450 on the south side of the mill building on Figure AM- 06-T-05). Secondary containment with a volume greater than that of the tank is provided in the reagent storage area (see Reagent Storage Area Detail Figure AM-06-T-06). Tank level indication is available locally as well as through the control system. The control system will alarm for a given tank low and high level. Both a horn and beacon are provided at the unloading point to indicate a tank high level. In the event of a storage tank failure, the collector will be contained in the reagent storage area via secondary containment. The secondary containment area is equipped with a sump but no sump pump. In the event of a release in this area, a pump will be placed in the secondary containment sump and the collector will be routed back into the process circuit or pumped into a suitable container for proper disposal through direction from the environmental department. A spill that occurs during offloading into the storage tank will be handled similarly using a sump located in the offloading area. When needed, collector may be stored as totes in Area 430 (floatation). Area 430 has a concrete floor EPP: Version R4 T-9 August 2018