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Y creek, to preclude the design (as defined by flood waters reaching elevation 297.1 feet in the channel created by the over crossing of Hospital Creek by Interstate 580) from overtopping the levee system at a line 250 feet to the north of the northern boundary of the CalTrans drainage easement for Hospital Creek. As appropriate, the long term (i.e., post mining) maintenance of the levee system to the north of Hospital Creek shall be under the control of an improvement zone, which is a part of the County-wide Flood Control District, a newly created County Service Area with the responsibility for maintaining the levee, or a newly created Reclamation District, which will be created prior to mining the northern mine area. s. HOSPITAL CREEK SETBACK: Brightly colored posts shall be installed every 50 feet along both sides of the Hospital Creek mining setback boundary area, which is measured 250 feet back from the centerline of the creek channel. Informational signs snail be posted every 100 feet which identify this area as restricted due to its biological sensitivity. Brightly colored posts shall also be installed on each side of the haul road on both sides of the channel in the immediate vicinity of the Hospital, Creek ford. t. SOIL RECONSTRUCTION PLAN: The reclaimed land surface shall be no less than 12 feet above the high level of the water table. The final reclaimed upper five feet of material shall consist of the following: a minimum fine grained soil content of 30% a maximum sand cntent of 20% and a maximum aravel content of 20% recorded on a j minimum of 90% of samples taken at a del2th of one foot beneath the reclaimed surface. The sam les shall also be tested for oEganic matter with a minimum requirement of 1%. All recommendations of the Re-Soiling. Reve etation and Erosion Control Plan contained as A endix D of the Final EIR shall be enforced as appropriate durin the life of the mine. U. SEISMIC SAFETY: if strong seismic shaking is experienced at the project site as the result of a moderate to large earthquake (M B or greater) along the CRSBBZ, the project site shall be inspected by a qualified licensed civil or geotechnical engineer to determine if liquefaction or seismic subsidence has occurred and resulted in visible damage to reclaimed lands. A report, including recommendations to repair any damage that may have occurred, shall be submitted to the Development Services Division for review and approval_ Upon approval by the Department Services Division, the proponent shall implement the recommendations forth in the report. set o p V. CULTURAL RESOURCES: The excavator shall cease all construction and excavation work immediately upon the discovery of cultural resource materials. Such work shall cease until the excavator has complied with the requirements of Appendix K of the CEQA Guidelines. W, ENFORCEMENT: Except as otherwise provided in State Mining Regulations, the County shall have authority to enforce provisions of the Surface Mining and Reclamation Act. The County may exercise all enforcement regulations available under the County Development Title and the State Public Resources Cade. Such enforcement measures include charging the applicant the costs of administering an enforcement action. The basis for charging fees for an enforcement action shall be. a time and materials compensation. (Development Title Section 9-1415.2[t]) 4 f