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-2- <br />3. Surface drainage on the northwest side of the slide is draining into <br />the slide. Drainage is relatively minor and probably will not <br />create additional problems. <br />II. Suggested Long-Term Evaluation <br />1. I would suggest a spring survey of the entire permit area as soon as <br />possible. An existing survey was done for the baseline study and <br />may not be up-to-date. P&M does not regularly monitor springs and <br />it may be that the slide area had springs prior to the failure and <br />other areas should be checked. When a spring is found it should be <br />noted on a map and an estimate made of the flow quantity and if the <br />flow is clear or muddy. I will include this in the hydrology <br />recommendations as part of the mid-term to become an annual survey. <br />2. I hope long-term evaluations will be addressed by whomever handles <br />the study of the slide. I would like to see several wells installed <br />and holes drilled along the slope of the reclaimed West Ridge area <br />to examine what the saturation levels are in this area. I would <br />also like to see several holes in the unreclaimed spoils northeast <br />of the slide to determine if and why they are still stable. There <br />will be problems associated with well installation if conditions are <br />as suspected and the spoils water has sufficient head to create <br />artesian conditions. It will be extremely difficult to isolate a <br />specific zone because the hole probably will not stay open long <br />enough. Hopefully the consultant will be aware of the problems that <br />may exist and have the appropriate equipment on site. I would like <br />to be closely involved in the well installation program, if <br />possible, so I know how reliable the data will be. I think that the <br />area of greatest concern will be the West Ridge Area with some <br />potential problems also in the southern portion of the Moffat area. <br />/ep <br />cc: Philip Saletta <br />Ed Bischoff <br />Doc. No. 1555 <br />