Laserfiche WebLink
An emission inventory conducted in 1985 identified mobile sources <br /> (predominantly motor vehicles) as responsible for over three-quarters of San Joaquin <br /> Valley's CO emissions (ARB, 1985). ROG emissions in the northern San Joaquin Valley <br /> are roughly split in half between mobile sources, and solvents and pesticides. Mobile <br /> sources account for as high as 78 percent of the total NOx emissions in the northern San <br /> Joaquin Valley counties. Re-entrained road dust from paved and unpaved roads is <br /> responsible for roughly 36 percent of the PM-10 emissions in the northern valley, while <br /> farming operations (primarily related to tilling and crop production) account 31 percent <br /> (the next major source) of the area's PM-10 emissions. In southern San Joaquin Valley, <br /> oil and gas production and refinery emissions are the dominant source of ROG and <br /> NOx, while for CO and PM-10, the emission sources are the same as for the northern <br /> portion of the valley (ARB, 1988). <br /> Processing Facility Emissions <br /> The existing processing facility currently holds Permits to Operate (PTOs) from <br /> the APCD for the following sources: <br /> - Aggregate storage and handling, aggregate feed bins, asphaltic concrete <br /> mixer served by a scrubber, and asphaltic concrete storage and loadout; <br /> - Two operating rock crushing and screening plants and associated <br /> excavation and receiving hoppers, loadout, and miscellaneous operations; <br /> - Hot mix plant; asphaltic concrete drum mixer served by a scrubber; <br /> asphaltic concrete storage and loadout; and <br /> - Cold Mix Plant (asphalt batch plant); this is the original asphalt plant that <br /> has been largely replaced by the hot mix plant. <br /> The PTOs for the processing facility contain over 20 conditions for operation. <br /> These conditions include limits on production quantities and length of operation, <br /> emissions rates, types of fuel to be used at the plant, monthly throughput of gasoline, <br /> and conditions for reducing fugitive dust. The permit specifies limits for emissions <br /> from the processing facility of 55 pounds per day (lb/day) of particulate matter, 250 <br /> lb/day of sulfur oxides, and 150 lb/day of nitrogen oxides. However, these emissions <br /> for equipment and operations that have been added to the facility since May 1979, since <br /> 75 <br />