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3.6 Proposed Project Components r The overall mining would be self-contained, meaning that surface drainage would be directed to the open pits. As mining commences at the site,all storm water drainage would be directed to the operating pits. Water would be directed to the operating pits through a series of berms, ditches, pipes,and regrading to prevent erosion and sedimentation. Upon final reclamation, site drainage would drain towards the northeast and southeast corners where it would first pond in two separate sumps,then percolate into the ground. Dust Control During site preparation and grading, at least one water truck will provide dust suppression by watering internal roads, areas in advance of stripping and at placement of fill for berms and structure pads. Site preparation, stripping and grading will be conducted primarily during the wet ` season when the soil moisture is at its highest. The San Joaquin Valley Air Pollution Control District(SJVAPCD)rule 8020(Fugitive Dust Requirements for control of fine particulate matter equal to or less than 10 microns(PMto)from Construction,Demolition, Excavation and Extraction Activities)will apply during the project's construction phase. The mining operation will regulated by SJVAPCD Rule 8020. Dust suppression for the operations will include the watering of mining areas and haul roads by water trucks as necessary to reduce dust. Approximately 80,000 gallons per day of water will be used for dust suppression. In the mining operations,the water will be applied by a water truck at the pit face and along the haul roads. Spray bars will be located at the feed hopper and at the field conveyor transfer points. A bag house will be used on most crushers, dry screens,transfer points,and all plants to control airborne dust and emissions. A bag house is typically a large metal box that contains fabric filter "bags"to remove dust particles from the air. Piant Construction The plant construction will commence once the site preparation and grading of the plant site has been completed. The stationary plant will be constructed in the Phase IX area. The general plant layout is depicted in Figure 3-5. The general components of the aggregate plant include: • Primary crushing and screening tower • Surge pile • Three secondary and tertiary crushing and screening towers • Wet side washing and screening tower • Product stockpiles r` • Drive under product load-out tower • Radial stacker conveyor • Conveyors At its highest point,the aggregate plant will be 65 feet tall. The height limit for the agricultural zone is 35 feet for dwellings and buildings that are accessory to dwellings. However, "other structures"have no height limit. (Development Title,Table 9-610.2). r RMC Pacific Vernalis Quarry Mining and Reclamation Project 3-15 ESA/203015 Draft Environmental Impact Report May 2006 r