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8. The #4 sediment pond located at Tunnel Drive will include an appropriate spillway and apron <br />to direct stormflows away from residential and road impact areas in the event that a --100 year <br />event occurs. <br />9. Tezak Heavy Equipment Company, Inc., will have the construction of'all proposed structures <br />certified by a registered professional engineer. <br />10. Schematic--Please refer to the 1 ":200' topgraphic map titled "Stormwater Drainage and <br />Affected Land Boundaries". This map shows complete routing of storm flows sitewi de. <br />11. The structures proposed in this SWMP are long term permanent structures which will <br />protect downslope properties from storm related erosion and deposition into the long term <br />future. The entire extent of sediment ponds, spillways, and inlets with the SWMP 30 acres will <br />operation at little to no maintenance, although some sediment removal may be neces~•sary on <br />occasion. Construction costs of the SWMP structures including revegetation of disturbed areas <br />is estimated at $40,000.00. The operator intends to maintain the SWMP diversion of the <br />undisturbed upper watershed for as long as the mine operates and will propose to continue said <br />diversion in the final reclamation plan of the pit. Life of mine of this deposit is minimally 50 <br />years. The estimate for removal of all ancient mining equipment found on part of the SWMP <br />property is $3000.00. At final reclamation of the pit, a long term diversion ditch will probably <br />be left in a shortest distance straight line direction from # 1 Sediment Pond to the north which at <br />present is the stockpile and crushing circuit area. #] Sediment Pond will be enlarged ~:o insure <br />proper operation with no/low maintenance. <br />12. Tezak Heavy Equipment Company, Inc.will cease and desist from any distrubance in the <br />amendment area until the operator has received Division approval of an acceptable plan for <br />minimizing impacts to the hydrologic balance in the quarry and surrounding area during <br />management of stormwater runoff. Tezak Heavy Equipment Company, Inc. will provide <br />certification from a registered professional engineer that all designed structures have Keen <br />constructed and are functioning properly. <br />(u.~/I (il/~ ~~..Q <br />~~ It~CC ~if/~6Q ~i~J1~ <br />~~ / <br />. I ~~ . <br />JL~~ alo <br />~~ <br />