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•~ <br />• <br />MINING PLAN <br />Please indicate what sediment control structures or site features <br />will ensure that disturbance to surface water quality, both during <br />and after mining, will be minimized. <br />How much water is anticipated to be used during gravel washing <br />operations and how will it be handled such that an NPDHS permit is <br />not required? <br />The application indicates that no highwalls will be left after <br />reclamation. Please indicate whether mining operations will end <br />with a highwall that requires backfilling, or if mining operations <br />will slope the pit floor so that a highwall does not exist at the <br />end of mining. Please provide detailed information regarding the <br />appropriate mining method. <br />What measures will be taken to remove vegetation from the site <br />before topsoil salvage begins? Will vegetation be ground in to the <br />soil or grubbed and removed? Please be specific about methodology. <br />The Soil Conservation Service report indicates that adequate <br />topsoil is present to cover the site to a minimum depth of six <br />inches. To ensure adequate soil quality and quantity for <br />successful revegetation, topsoil salvage should be conducted to <br />segregate and store the overburden separate from the topsoil. <br />Please commit to segregation of the overburden from the topsoil and <br />to salvaging enough topsoil volume to cover the disturbed area with <br />a minimum of six inches of topsoil. <br />Please indicate the elevation of the wetlands described in Exhibit <br />G and what it's water source is. Is it possible for the mining <br />operation to affect the water quality or quantity at this wetland? <br />RECLAMATION PLAN <br />The reclamation plan map shows the average slope of the reclaimed <br />surface to be approximately 4: 1; however, the uppermost contours <br />illustrate a slope steeper than 2: 1. Pursuant to Rule 3.1.5(2) and <br />(7), please demonstrate how backfilling and compaction will be <br />performed to ensure adequate stability and compatibility with the <br />proposed end land use. <br />Pursuant to Rule 6.4.5(2)(e), please provide a schedule or <br />timetable indicating how and when reclamation (and reclamation <br />phases) will be carried out. <br />Please commit to replacement of a minimum depth of six inches of <br />topsoil on the entire disturbed area to be reclaimed. Also, <br />indicate what soil conditioning methods will be employed before <br />seeding. ie: harrowing, discing, chisel plowing etc. <br />The application indicates that topsoil will be stockpiled for the <br />thirty year life of mine. Storage for this extended period of time <br />