GENERAL35216 - Laserfiche WebLink

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E. Evaluation of Compliance of Revisions None F. Necessary Stipulations and Justification (1) The applicant shall provide the regualtory authority with a corrected version of Map 77, Refuse Disposal Area Site Preparation which shows 'Z the location of the culvert that carries flow from the non-toxic fill stockpile ditch across the haul road into the subarea R2-3 sediment pond. This information should be submitted within 90 days of approval of the mine permit. (2) Within 60 days of approval of the mining permit, the applicant provide ~, ditch dimensions for the entire "north topsoil ditch" in the D-Portal area. These plans must be submitted and approved prior to the onset of construction at the D-Portal area. (3) Within 60 days of the approval of the mining permit, the applicant must submit the calculations and assumptions used to size the railroad loop sedimentation ponds, and must resize the outlet culvert at /, sedimentation pond #4 in the Railroad Loop to prevent excessive t ponding at the entrance or justify the present sizing with appropriate calculations. The lower segment of the sub area R4 refuse ditch must also be resized to accomodate the 10 year-24 hour flow. This must be completed and plans approved by regulatory authorities prior to the onset of work at the Railroad Loop. (4) The applicant shall submit to the regulatory authority within 90 days a modified restoration plan for Scullion Gulch to omit the thirteen ,` proposed in-channel rock check dams. In lieu of these, the applicant should install three dams or sediment traps, built to SCS or U.S. Forest Service specifications, at the downstream construction limits in Scullion Gulch. These traps should provide sufficient storage to store one year of sediment accumulation from the D-Portal area. The traps must be installed prior the onset of reclamation, cleaned 29