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Ms. Welt <br />Page 3 <br />not, please update this table to include all culverts presently on <br />site. <br />D. Has MCC conducted a detailed survey of all site culverts as <br />requested in the April 9, 1991 adequacy review? As a result of <br />this survey, do specifications of all culverts need to be updated? <br />2. See response to VI, 1, A and V2, 1, D concerning a detailed <br />drainage control map. <br />3. Upon review of the Division's inspection reports of August 1986 <br />and May 1987, the Division still upholds the recommendations made <br />concerning the upper diversion ditch: removal of slide debris in <br />the ditch would cause a much greater disturbance and could <br />potentially trigger further sliding. MCC should verify that the <br />drainage control system will not be jeopardized by the additional <br />flow, which passes the non-functional portion of the diversion <br />ditch. <br />4. As the rock buttress on the east toe of the Refuse Pile has <br />been completed, the issue of an "extra ditch" no longer exists. <br />5. Upon review of the permit, it has been determined that the <br />Sylvester Gulch Fan site is the only small area exemption. <br />Pursuant to Rule 4.05.2(3), MCC must demonstrate that the runoff <br />from this area meets effluent standards. <br />6. This response is acceptable to the Division. <br />VII. Bonding <br />1. The bond estimation completed by MCC was submitted as part of <br />the reorganized permit document, TR 59. This estimation was <br />separated from the technical revision and completed as a bond <br />adjustment in relation to this renewal process. <br />April 24, 1991 Letter <br />I. Permit Boundary <br />1. Upon review of Map 53 and a field inspection conducted on May <br />5, 1992, the loadout area is entirely included in the permit area <br />and therefore will be reclaimed. Permit boundary signs have been <br />hung to accurately show that Map 53 corresponds with on-the-ground <br />conditions. All drainage from the loadout site is currently <br />designed to be accommodated by a sediment pond, MB-4, already in <br />place. The drainage control design implementation will be verified <br />during upcoming inspections. <br />