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shall include grading and drainage patterns which will conduct surface runoff towards the large stock pond in the southwest corner of the site. Grading and drainage facilities shall be implemented so as to maintain current runoff levels to the wetland area. The applicant must also obtain a permit to conduct surface mining operations from the County (as lead agency under SMARA). 10. To ensure that extraction of 10,000 gallons per day of groundwater will not impact adjacent wells, a qualified groundwater hydrologist or hydrogeologist shall conduct an evaluation of the potential impact on existing local groundwater wells. The selection of the individual or firm to conduct the evaluation shall be subject to approval by the County and the California Department of Water Resources. The evaluation shall determine the potential drawdown and area of influence of the extraction from the project well. If it is determined that project water use could significantly impact local wells, these wells shall be monitored for project related drawdown. If significant adverse impacts to local wells is identified, mitigation shall be provided such as deepening or replacement of affected wells. 11. If the applicant determines that waterway markers (e.g. signs or bouys) are necessary to warn or advise boaters of hazards during bridge construction, the markers must be placed or installed in accordance with the requirements as specified in Title 14, Article 6, California Code of Regulations. 12. Truck loads crossing the project bridge must be fully contained to prevent accidental spill or release of materials into the Mokelumne River. To minimize the potential impact from potential spills, an emergency spill containment and contingency plan shall be submitted to and approved by the County prior to project construction. 13. The applicant shall notify the California Department of Fish and Game of any work, including bridge relocation, in the Mokelumne River related to this project as required under Section 1600 of the Fish and Game Code. 14. Transfer of title for the retention/percolation basin shall be resolved with the County prior to project construction. 3.3 Biology 3.3.1 Setting Harding Lawson Associates (HLA) conducted an on-site biological resources survey of a proposed expansion of the Claude C. Wood Quarry operation. HLA biologists visited the site on April 10, 13, and 24, 1990. 38