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aoog 96 PnF,193 • Bonds for site plan compliance, restoration, and hauling over unpaved county roads. • Acceptable haul route, protection of pavement edges, paved driveway aprons, and a covered truck bed requirement to prevent material spillage on roads. • An annual mining permit. In addition to satisfying these specific regulations, mining applications must satisfy the general criteria applied to administrative permit uses. These criteria include consistency with the comprehensive plan and mitigation of adverse impacts on the surrounding area. Such mitigation can be required via approval conditions. With mining administrative permit use requests, the Planning and Zoning Commission makes the final decision to approve, approve with conditions, or deny requests. If the Planning and Zoning Commission's decision is appealed, however, the Board of County Commissioners makes the final decision. In general, commercial mining operations are allowed in agricultural zoning districts, but are subject to a comprehensive set of specific regulations. Exempted Mining Activities Other types of mining activities, smaller in scale than the "commercial mining operations" referred to above, are also allowed under the existing LDRs. These "exempted" activities are generally regulated only in regard to impacts on stormwater management and wetlands. . Such exempted activities can occur throughout the county, even in residential areas, and include: • Agricultural use projects relating to drainage, irrigation and watering ponds. (Note: a 50' setback between property lines and excavation areas is required unless a closer setback is approved in writing from an adjacent property owner.) • Utility projects. • State, federal, and local road and public works projects. • Graves and landfills. • Approved power plants, with regard to reservoirs. • Excavation in conjunction with an approved development where no more than 5,000 cubic yards of material is exported off- site. Significant Mining Incidental to Construction In addition to these exemptions, there is a specific provision that allows excavation incidental to an approved construction project where more than 5,000 cubic yards of material is exported off-site. Such activity can occur throughout the county in all zoning districts, including residential districts, and is restricted as follows: 1. Extraction and hauling off-site must be completed within a 2 month period and is limited to the hours of 7:00 a.m. - 5:00 p.m. Monday through Friday. 2. Lake depth is limited to 121. SEPTEMBER 21, 1995 4