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2008- 023 2. Final grades of the sites 3. Littoral zone grading and planting plan in accordance with the littoral zone requirements of these mining regulations; and 4. Groundcover treatment for the entire site, including permanent erosion control and stormwater management measures. (3) Conditions of the mining permit. (a) The Generally, the maximum project -site development phase for mining excavation pit activities shall not exceed twenty (20) acres per phase. During transition from one phase to the next, two phases may be active concurrently if security is posted for both phases in accordance with these mining regulations. No portion of a pit (lake) shall be required to be fully restored in accordance with the project's restoration plan until excavation of the entire pit (lake) has ceased. (b) No mining excavation shall occur within one hundred fifty (150) feet of a projected right- of-way line of any existing or proposed public road, nor within one hundred fifty (150) feet of the outer perimeter of the project property. Where a mining operation consists only of the removal of a mound and does not consist of lowering the elevation of ground below the neighboring property, an exception of the one hundred fifty (1.50) feet setback may be permitted at the time of site plan approval. In addition, the applicant shall satisfy the following: 1. A three -hundred -foot setback from adjacent occupied structures (structures existing as of the date of site plan application for the mining project) to mining pits, on-site haul roads, and material stockpile areas. (c) All mining sites that exceed ten (10) acres in area shall be subject to the provisions of section 934.05, water management standards, of this chapter. Projects creating waterbodies must also provide a safety/security plan fol the mining operation phase, including, but not limited to, fences and/or berms, access, control, and other security methods. (d) If the project site is of a size that falls below St. Johns River Water Management District permitting thresholds and is located (in whole or part) on the Atlantic coastal sand ridge, no excavation governed by a mining permit shall result in an average elevation of less than twenty-five (25) feet mean sea level (MSL) for that portion of the project site located on the sand ridge. Mining project sites that are large enough to fall within Saint Johns River Water Management District (SJRWMD) permitting requirements shall conform to SJRWMD permitting requirements concerning depth of mining and all other applicable SJRWMD permitting requirements. (e) If the project site is adjacent to a residential district or to an agriculturally -zoned parcel of ten (10) acres or Tess, the perimeter of the site adjacent to such an area shall include a fifty - foot wide bufferyard and a type "A" buffer or its equivalent along said site boundary. (f) No crusher, mixing plant, bin, tank, or structure directly involved in the production process shall be located less than: six hundred (600) feet Double Underline Text: No i Workshop Chai ges Bold Underline: Addition to Ordinance St -Eke -through: Deleted Text from Existing Ordinance F:AConinnnity Devclopmei t\Users\CurDcvAORDINANCE\2008\2008- 934 Excavation(a[ter l2-19-08).RTF 15