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10.126 1.. Mineral extraction operations including washing, crushing, quarrying borrow pits, or other processing or removal of mineral resources, the erection of buildings and the installation of necessary machinery used in said extraction or processing, and the preparation of hot blacktop mix and ready-mixed concrete are conditional uses and may be permitted in the A-2 Agriculture District provided that: 2. An application for a permit shall be submitted by the owner and shall include an adequate description of the operation; a plan of the site showing the proposed and existing roads and drives, the sources, quantity and disposition of water to be used, if any; estimated dates for completion of the extraction and commencement and completion dates for the reclamation; a reclamation plan and such other information as may be necessary to determine the nature of the operation and the effect on the surrounding area. 3. The reclamation plan shall contain adequate provision that all final slopes around the area be flatter than a three (3) to one (1) horizontal slope in a sand, gravel or borrow pit operation, or in a safe angle of repose in a quarrying operation; ex- cavations below the grade of the nearest abutting public street or highway shall be setback from the street or highway a distance not less than that required for build- ings and structures under this ordinance; excavations made to a water producing depth shall be not less than three (3) feet measured from the low water mark, all final slopes shall be covered with topsoil from the original site and seeded to pre- vent erosion; the plan shall require that after completion of the anticipated opera- tion that the area shall be cleared of all debris and be left in a workmanlike condi- tion, subject to the approval of the Dane County Zoning Committee or its agent. 4. Application for a conditional use permit for a mineral extraction operation or for a hot mix blacktop mix plant or ready mixed concrete plant, shall be submitted to the Committee for a public hearing and approval. The conditional use permit shall be for a period of time stated in the application or as modified by the Committee. Modifica- tion of the application or reclamation plan may be permitted or additional conditions may be required upon application. The Committee shall consider the effect of the pro- posed operation and the proposed reclamation upon existing and future conditions, in- cluding streets, neighboring land development, land use drainage, water supply, water pollution, air pollution, soil erosion, natural beauty and land value of the local- ity. The Committee may approve, approve conditionally or reject the application and reclamation plan. 5. All existing mineral extraction operations shall be considered non-conforming uses and may be continued providing that they have been worked prior to the date of adop- tion of this ordinance and that they have been registered with the Dane County Zon- ing Administrator within one year of the date of the adoption of this Ordinance. 6. Conditional use permits are not required for land leveling activities or conserva- tion practices on agricultural land and where fill material or aggregate is re- moved from the property as an incidental activity. • 7. Portable cement batch or mixing plants or portable hot mix blacktop plants used in connection with a highway improvement or construction project do not require a con- ditional use permit. Material produced by such a plant shall be used only for the project and sale or use of material at any other location will require a conditional use permit. 8. Upon the expiration of any permit issued by the Zoning Administrator, the owner of a mineral extraction operation or his agent shall apply for a conditional use permit under ss 4. above. (b) Radio, television transmitting towers, microwave towers, community television antenna including the building or structures necessary for their operation but not including buildings for offices, studios or the like. The parcel of land shall be of a size large enough to insure that if a tower shall fall it will not fall on adjacent property or on the right-of-way of a public road. 26