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The composting operation requires a compost aerator (Scarab) and ' screening equipment. A rock and rubble crusher, and processing equipment are required for rock and rubble recovery. These activities would be done outside of the building. CIWMB staff offer the following comments, and ask that they be responded to in the Final EIR: Project Description Tonnage The project description in the DEIR indicates that the facility capacity would increase from 650 tons per day to 2000 tons per day. The Solid Waste Facilities Permit file alludes to a daily tonnage figure of approximately 300 tons per day. A Stipulated Notice and Order, issued on March 12, 1991, allows for the receipt of 450 tons per day, with peaks to 650 tons per day. The project description should reflect tonnages which are allowed in the SWFP, not tonnages sanctioned by a Notice and order. Although environmental impacts may not differ, staff request that the project description reflect the actual baseline of 300 tons per day for the proposed project. Additionally, page 21 of the DEIR discusses air emissions for the proposed expansion. The document indicates that the waste stream is assumed to total 3,250 tons per day. Regardless of what proportion of waste is to be recovered, the project description (2000 tons per day) and the assumed tonnage figure should be consistent. The DEIR indicates that a rock crushing operation would be part of the facility. Impacts such as noise, dust, and air quality and associated mitigations should be discussed in the document. Does the proponent propose any asphalt recovery activities for the facility? If so, the DEIR should have addressed potential impacts and mitigations for this activity. Environmental Impacts and Mitigations Air Oualitv. Vehicle Emissions Vehicle emissions stated on page 14 that vehicle emissions will be reduced due to the fact that there will be less miles driven with the expansion than there would be if the waste were to delivered to the landfill in smaller quantities. Page 43 of the DEIR indicates that the transfer station is expected to generate 2075 round trips per day. Additional impacts can be estimated by comparing the present tonnage level with the proposed 2, 000 tons per day. The DEIR indicates that there is an apparent absence of air quality impacts. This does not