The proposed project is the construction and operation of a ready-mix concrete batch plant. The batch plant will be constructed of steel and the site will include storage units, material bunkers, and stockpiles; similar to certain features located at the existing, adjacent mine site. The footprint of the proposed structure will be approximately 1,875 square feet with a maximum height of 90 feet. Operation of the proposed plant includes mixing concrete ingredients, such as Portland cement, sand and gravel, and admixtures. The mix is then distributed to concrete mixer trucks, where water is added before the concrete is ready to be used at job sites. An estimated 15 concrete mixer trucks will be used at the project site and will be typical multi-axle trucks with a spinning drum and concrete chute. Hazardous materials will be present on the project site, which include admixtures, motor vehicle lubes and fuels. These hazardous materials will be stored in accordance with all applicable Federal, State, and Local regulations, which could include applicable permits from Merced County Division of Environmental Health, preparing a Hazardous Materials Business Plan, Hazardous Materials Management Plan, etc. The project site may be used to serve operations of the existing mining site related to material storage and asphalt and concrete recycling stockpiling, as well as vehicle parking.
The nature of concrete requires it to be delivered to the market (construction job site) within several hours. The structure and consistency of the concrete can be changed by ambient conditions, such as excessive heat during the day; therefore, most deliveries are conducted in the early morning hours. Concrete is commonly used in public works projects, which for the safety of the public and the workforce, are routinely conducted during overnight hours. Therefore, the proposed plant would operate 24 hours a day, 7 days a week.