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(see Attachment K). This type of liner or equivalent will be used with DRMS <br />approval. <br />6.1.2 Evaluation of the Proposed Environmental Protection Facilities <br />The proposed EPF will incorporate necessary control systems (i.e. berms and <br />geomembrane liner) to contain surface water run-off for the 10-year, 24-hour storm <br />event. Stormwater run-on will be diverted around the ore storage pad areas by the <br />perimeter berm. <br />The EPF will be inspected and maintained as described in Section 4 and 5 of the <br />SWMP, included as Attachment D. All necessary protective measures will be kept in <br />effective operating condition. Any EPF that is not adequately maintained in <br />accordance with good engineering, hydrologic, and pollution control practices is <br />considered to be no longer operating effectively and will be modified or replaced. <br />As outlined in the SWMP, if a spill of pollutants threatens stormwater at the site, the <br />spill response procedures outlined below will be implemented in a timely manner: <br />¦ The Mine General Superintendent will be notified immediately when a spill, <br />or the threat of a spill, is observed. The superintendent will assess the situation <br />and determine the appropriate response. <br />¦ If spills represent an imminent threat of escaping erosion and sediment control <br />facilities and entering the receiving waters, facility personnel will respond <br />• immediately to contain the release and notify the superintendent after the <br />situation has been stabilized. <br />¦ The Mine General Superintendent, or his/her designee, will be responsible for <br />completing the spill reporting form and for reporting the spill to the <br />appropriate state or local agency. <br />• <br />6-2 <br />T:\64986-Denison Mines\Task Order4 -EPP Sunday Mines Group-Van4\Van4\DRMS RTC and Revised EPP\FINAL ORMS Report -EPP Van4.doc