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physical, climatological, and other characteristics of the site, and will conform to the <br /> impoundment performance factor of safety of 1.3 (4.05.6(l 1)). <br /> E. Acid-forming and Toxic-forming Spoil <br /> The Division approved temporary storage of acid-and toxic-forming spoil for more than <br /> 30 days. This decision was based on a finding that burial or treatment of these materials <br /> within 30 days was not feasible and the delay would not result in any material risk of <br /> water pollution or other environmental damage (4.05.8(3)). See Section 2.04.6 for <br /> identification, mining plan contingencies, and spoil/mine soil reconstruction plans <br /> (respectively) that address acid or toxic spoil horizons. <br /> F. Impoundments <br /> All impoundments have been designed to meet the applicable requirements of Section <br /> 4.05.9. <br /> G. Surface and Ground Water Monitoring <br /> 1. The applicant will conduct monitoring of ground water in a manner approved by <br /> the Division (4.05.13(1)). Surface and ground water monitoring station locations <br /> are shown on map 2.04.7-1-A in the permit. The ground water monitoring plan is <br /> as follows: <br /> a) The current ground water monitoring network consists of 6 monitor wells. <br /> b) All wells in the area will be monitored quarterly for water levels adjusted to <br /> MSL and samples will be collected on a quarterly basis for water quality <br /> parameters. <br /> 2. The applicant will conduct monitoring of surface water in a manner approved by <br /> the Division. The monitoring plan was submitted under 2.05.6(3)(b)(iii) and <br /> includes the following: (4.05.3(2)) <br /> a) The current surface water monitoring program consists of quarterly field <br /> parameters and quarterly laboratory parameters. <br /> c) NPDES sites (sediment pond outlets) will be monitored according to the <br /> CDPS permit. <br /> H. Stream Buffer Zones <br /> The Division has approved a variance for disturbance within designated stream buffer <br /> zones for Tuttle Draw, Calamity Draw and Enstrom Draw. The variances were <br /> discussed and approved with TR-83. <br /> 24 <br />