2009-06-08_REVISION - M1997032 (22)

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COR-040000 Stormwater Management Plan • • Chemicals, including liquid products, petroleum products, water treatment chemicals, and wastes stored on site will be covered, stored with secondary containment, and contained and protected from vandalism. • Maintenance and repair of equipment and vehicles, including oil changes, hydraulic system drain down, de-greasing operations, fuel tank drain down and removal, and other activities which may result in the accidental release of contaminants, will be conducted under cover during wet weather and on an impervious surface with adequate spill containment. Materials spilled during maintenance operations will be cleaned up immediately and. properly disposed of. If necessary for dust suppression, application of magnesium chloride and calcium chloride will be conducted in a manner and at application rates that will not result in excessive loss of chemical to stormwater runoff. Manufacturers' recommendations will be followed for application rates and procedures. -1) Spill Respawse The primary objective in responding to a spill is to quickly contain the material(s) and prevent or minimize their migration into stormwater runoff and conveyance systems. If the release has impacted on-site stormwater, it is critical to contain the released materials on site and prevent their release into receiving waters. • If a spill of pollutants threatens stormwater at the site, the spill response procedures outlined below must be implemented in a timely manner to prevent the release of pollutants. • The Mine Manager will be notified immediately when a spill, or the threat of a spill, is observed. The Manager will assess the situation and determine the appropriate response. • If spills represent an imminent threat of escaping facilities and entering the receiving waters, facility personnel will respond immediately to contain the release and notify the Manager after the situation has been stabilized. • Spill kits containing materials and equipment for spill response and cleanup will be maintained at the site. • If an oil sheen is observed on surface water (e.g., temporary sediment traps, ditches, and channels), absorbent pads and/or booms will be applied to contain and remove the oil. The source of the oil sheen will also be identified and removed or repaired as necessary to prevent further releases. • The Mine Compliance Technician, or his designee, will be responsible for completing the spill reporting form and for reporting the spill to the appropriate state or local agency (see Appendix Q. • Facility personnel with primary responsibility for spill response and cleanup will receive training from the Mine Compliance Technician. This training will include Van 4 Shaft SWMP 12 Denison Mines (USA) Corp.