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Hazardous chemicals, which could enter waters of the State as a result of accidental release during transportation to and from the project areas, during storage, and during use at the project areas are listed in Appendix F of the Preliminary Response Plan. Included in this appendix are hazardous ingredients, storage quantity, and other hazard information for each material stored. This list includes chemicals used in the daily operation of the plant that have been identified at this time. Hazardous chemicals used during construction will be identified in the Construction Stormwater Management Plan. All MSDS sheets available for these materials will be kept onsite and used as a guideline for their proper storage, handling, and disposal. Hazardous chemicals used onsite (with the exception of gasoline and diesel fuel) will be stored inside to prevent contact with Stormwater. Steps taken to contain other materials such as fuel, used oil, and human waste, which could potentially come in contact with and pollute Stormwater are discussed in Sections 2.2 and 2.3. 1.5.3 Other Pollutants Water collected in vehicle and equipment maintenance areas will be routed to an oil/water separator. After processing, this water will be returned to the Stormwater drainage system or recycled into the process stream. Waste from this process will be stored in barrels and disposed of at an appropriate facility. Liquid waste generated by the laboratory facility will be collected, sampled, processed, and disposed of in an appropriate manner. 2.0 BMPs FOR STORMWATER POLLUTION PREVENTION The exact location of the controls described, as well as any other controls required to meet the intent of this plan, will be determined in the field by the permittee. Each drainage situation will be treated creatively to minimize construction and treatment costs, while striving to maximize the effectiveness of BMPs. Maintaining or establishing surface hydrologic stability is a critical component in the mining and reclamation process. Adequately controlling erosion and minimizing sediment transport serves to prevent or minimize impacts to receiving waters and supports and enhances the long-term stability of reclaimed areas. There are a variety of BMPs that may be employed to accomplish these goals during development, operation, and reclamation of the project. BMPs may be used independently or in combination to accomplish erosion and sediment control objectives. While serving a common purpose there are distinct applications to which BMPs are best suited. Prelimmarv Response Plan A-4 Yankee Gulch Sodwm Minerals Project American Soda, L.L.P.