ARCHIVED REPORTS_1997 - Laserfiche WebLink

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Odor Impact Minimization Plan —Compost Facility Tracy Material Recovery Facility and Transfer Station 30703 S. MacArthur Drive, Tracy, California 95377 • The facility personnel will conduct a load check during unloading. At least one trained load-checking employee will be present during deliveries. Contaminated and uncompostable materials will either be returned to the hauler or placed in bags or cans or set aside. • The green material, yard trimmings, and wood wastes will be processed in a portable horizontal grinder within the boundary of the compost operations area or deposited directly into the windrows. • All incoming co-collected organic (CCO) feedstock (85% green waste/15% food waste) will be commingled at the point of generation from residential areas via the use of curbside green waste 'toters'. The CCO feedstock will come to the facility where the feedstock is ground on-site and then placed in windrows. • The CCO feedstock that to be processed at the facility will be placed into an exclusive stockpile next to the grinder, and will be ground within 24 hours of receipt. The processed CCO material will then be formed into elongated windrows in the CCO composting area for on-site composting. • Incoming material will be shaped into piles within an average of 7 days of receipt for green material and within 48 hours for food waste. • The material is formed into trapezoidal-shaped windrows. Windrows are approximately 14 feet wide, 7 feet high, and a length that varies according to pad size. Windrows are separated by an access road for windrow loading, monitoring, watering, and turning. • All information pertaining to each pile will be documented in site records and allow instant identification of pile status (e.g. start date, temperature readings, turnings, and sampling) and allow site personnel to isolate material waiting testing results. The Site Manager will keep a Map showing windrow location and numbering system. • The temperature and moisture of the windrow materials will be monitored and controlled, and the windrows turned on a regular basis so that the composting process is maintained. A windrow turner, or a front-end loader as back up, will be used to turn the windrows. Windrows will be turned to meet the time and temperature requirements as discussed below, wind permitting, for an anticipated period of ten to fourteen weeks. • Water will be added as necessary to the compost windrows to maintain the appropriate composting moisture and control dust. A piped irrigation system is used to add water to the windrows. The frequency of spray irrigation will vary with the season. A water truck will also be used to control dust generation during grinding or screening and be available for fire protection. 5