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C. Disgusslon of Evaluation The major components of automobile air emission are Reactive Hydrocarbons (ROB), Carbon Monoxide (CO), and Nitrogen Oxide (NOX). The San Joaquin County Air Pollution Control District has established thresholds for determining whether projected emissions associated with a project pose a significant impact to the surrounding area. However, these thresholds are based on automobile emissions associated with residential use. The applicant proposes no significant increase in the number of vehicles involved in the transport of refuse. The subject proposal will capture existing traffic currently destined for the landfill. Therefore, no additional air quality impacts due to vehicle traffic is anticipated. The amount of pollutants emitted into the air basin from the proposed project alone will not significantly affect the environment. Possible deterioration of the existing ambient air quality will result from the cumulative impact of the project construction and increased motor vehicle traffic in the area. However, the proposed operation will also replace the existing landfill operation, which will also significantly reduce local particulate emissions and nearly equal the rate of private automobile trips. (see traffic section) Generally, employer sponsored car-pooling, ride-sharing and other forms of trip reduction begin to be feasible and effective when the number of employees on a given site exceed 50. The number of employees on the subject site is relatively small. Therefore, encouragement of alternative forms of transportation to the site should be encouraged by management, but not required. The proposed project will not result in substantial air emissions or deterioration of ambient air quality. There will be no alteration of air movement, moisture, or temperature or any change in climate, either locally or regionally. A primary purpose of a solid waste transfer station is to reduce the number of vehicle miles required for the disposal of solid waste. This is achieved by the fact that the station is located closer to the source of waste generation than the landfill, and by reducing the number of loads going to the landfill through the use of larger transfer vehicles. Thus, vehicle emissions will be reduced due to the fact that there will be less miles driven than there would be if the waste were to be delivered to the landfill in smaller quantities. At 500 TPD capacity 25 transfer vehicles will travel 90 miles round trip to the landfill. Without the station 353 private and commercial vehicles would be required to travel to the landfill. 21