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material. The tipping floor shall be washed down periodically to reduce dust and residue build-up.; All employees in the MRF shall wear the proper personal protective equipment, and the building shall be properly ventilated in accordance with the Uniform Building Code (UBC). Misters may be used inside the transfer building. This will be finalized, and information regarding whether misters will or will not be used will be included in the RSL Aspergillus mold, although uncommon,: may be found in compost and may lead to respiratory disease in humans. The mode of transportation is airborne; thus, proper dust and temperature control will provide mitigation. Healthy persons also show a high degree of resistance to the aspergillus mold (personal conversation on November 18, 1993, with Ed Padilla, Environmental Health Division). A17 The noise analysis contained in Chapter 4.6 does not identify any significant, adverse, noise -related impacts. Employeenoise exposure shall be controlled by providing proper ear protection equipment for all employees, in compliance with Cal-OSHA/Fed-OSHA. As discussed in the Draft EIR, noise from station operations is unlikely to create a health hazard to persons using the site or to nearby residents. As discussed in Chapter 4.6, the closest development to the project site are two residences (mobile homes) located approximately 600 feet north of the site on the east side of MacArthur Drive. The closest residential subdivision is approximately one mile north of the site along MacArthur Drive. In addition, locating the main processing areas in the bottom of the abandoned gravel pit will reduce noise exposure outside the site boundaries. A18 Duringa major storm event an emergency generator and pumps would be used to urn out the storm 1 g cY 9 P _P pump water drainage pond. Water would be pumped to the top of the pit and released in the natural drainage course. The leachate pond would be pumped into tanker trucks for disposal off the site. A19 Storm water runoff from all areas except for the wood "storage and yard waste composting area will drain to an on-site retention pond. Runoff will be collected via surface swales ditches, and an underground storm drainage system. The storm drainage system will be designed for the 10 -year storm, per San Joaquin County Storm Drainage Design Standards. The retention pond will be sized to contain 200 percent of the computed volume of runoff from the 10-year/24-hour storm. The pond shall also be `designed to empty by percolation and evaporation 100 percent of the required volume of storage within 10 days. Storm water runoff from the wood storage and yard waste compost area will drain to an on-site lined evaporation pond. This pond will have a single clay liner with a permeability of 1 X 106 cm. per sec. or less and will be sized for the 100-year/24-hour storm. Water used for periodic washdown of the MRF/transfer station floor will be collected and directed to holding tanks for temporary storage. Holding tanks will be located outside the building in the paved area for easy access. Water will periodically be pumped out and hauled to a local treatment facility or other approved facility for disposal. Testing will be done to ensure compliance with any treatment standards prior to disposal. Water from the truck wash areas will be collected and discharged to a three -stage sand and grease separator. Discharge from the separator will be directed to the on-site sewage disposal system, which will consist of a septic tank and leach field designed and constructed in accordance with standards of ER -93-1 -12- (11-23-93)