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• <br />• <br /> <br />Whirlwind Mine Materials Containment Plan <br />30100 5110 Road Revision 2 <br />Gateway, Colorado 81522 <br />UNTREATED/PARTIALLY TREATED MINE WATER <br />Synonyms: Raw water, treatment water <br />Maximum Quantity On-site: 164,000 gallons (untreated water tank) <br />770 gallons (2 reaction tanks, 335 gallon each) <br />7,500 gallons (settling tank) <br />7,500 gallons (polishing tank) <br />180,000 gallons total <br />Description: Clear, no odor <br />May contain elevated levels of radium-226, uranium, or other metals above <br />effluent limitations set forth in NPDES Permit No. CO-0047562 <br />Potential Health Hazards <br />• Skin Contact: Not a hazard <br />• Eye: Not a hazard <br />• Inhalation: Not a hazard <br />• Ingestion: Not a hazard <br />Potential Environmental Hazards <br />• No fire or explosion hazards <br />• May exceed effluent limitations for radium-226, uranium, or other metals <br />Handling <br />• Wear nroner PPE including standard site PPE 11 <br />First Aid <br />• Eyes: None required <br />• Skin: None required <br />• Ingestion: None required <br />• Inhalation: None re uired <br />Containment <br />Untreated Water Tank, Settling Tank, and Polishing Tank <br />• Primary: Geomembrane liner <br />• Secondary: Secondary geomembrane liner, leak detection between geomembrane <br />liners, claymax underliner, and downgradient sediment pond. <br />Reaction Tanks <br />• Primary: Plastic Tanks <br />• Seconda : Treatment, trailer sum drains to external 400-gallon plastic tank <br />1 of 2