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r ,f 4 it II (1) The bottom slope of the excavation pits must be modified to follow existing drainage patterns. This will involve creating a high point in the pit at tl.a location of the watershed boundary and sloping away from this high point towards the ii appropriate drainway. Currently, the bottom slopes in only one direction. or (2) A drainage study must be submitted which shows that either the downstream drainage facilities can handle the additional runoff or that the proposed plan will not increase runoff from the site to the affected drainways. I iE e. Traffic Impact Mitigation Fee. The Traffic Impact Mitigation Fee will be required for this development. The fee is due and payable prior to approval of the excavation plan. The fee currently is$164.07 per additional daily trip-end in the Lockeford area. The fee shall be automatically adjusted July 1 of each year by the Engineering Construction Cost Index as published by the Engineering News Record. (Resolutions R-90-304, R-91-1! 25, R-93- 167, R-94174) G 3. PUBLIC HEALTH SERVICES: (Staff contact: Ted Norgard, 468-3443) F a. Ground Water. No excavation is permitted into the ground water table without specific approval from the Regional Water Ouality Control Board, Central Valley Region Water Code, Chapter 4, Article 3, Section 13240. t b. Water Pollution. The materials from an excavation shall not be deposited into��any water course nor in any way contribute to the pollution thereof. (California Water Code, Section 13376) !i C. Potable Water Supply. An approved potable water supply must be provided for all employees. (Development Title Section 9-1100.1) 6 ; d. Sanitary Facilities. Approved sanitary facilities must be provided for all emSployees. (Development Title Section 9-1100.1) f 4. STATE DEPARTMENT OF FISH AND GAME: (Staff contact: Dan Gifford, 369-8851) a. Conduct Surveys for Nesting Raptors, A survey should be conducted by a qualified biologist during spring or early summer (April-July), before the start of each phase of mining activities near any suitable nest tree. If an active nest is located within 500 feet of an excavation area,the nest tree should be avoided during the nesting season (March- June 15) until the young have fledged. If an active nest tree cannot be avoided, the removal should occur after the breeding season (after June 15 and before March 1). i CC b. Avoid Disturbance of Nesting Swainson's Hawk. If an active Swainson's hawk nest is found within 0.5 mile of the disturbance site, consult DFG and follow DFG Irmitigation guidelines for Swainson's hawks in the Central Valley. a C. Compensate for Loss of Swainson's Hawk Foraging Habitat. Compensate for loss of r Swainson's hawk foraging habitat on a 0.75:1 ratio. In all, 75 acres of suitable Swainson's f hawk foraging habitat outside of the area to be excavated is required. r �€ j Conditions of Approval - 5 - OX-94-2 'P i '�