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Feedstocks are mixed and composted for 12 weeks. Piles are monitored for temperature and turned weekly. The final product is screened to removed any residuals larger than 3/4" and moved to curing piles. The standard mixture generally includes feedstocks in these proportions:

78% animal manure and bedding

10% coal ash

10% processed compost

1% food waste

0.5% green house soil and potting plant material

0.5% yard waste *

5% shredded wood waste is added during wet seasons to increase porosity

Bedding Mixture:
The bedding product was developed to process large amounts of dry high carbon material during summer months when wet manure (nitrogen source) is less available. This product heats to temperatures in excess of 165F effectively pasteurizing the bedding and reducing pathogens. Because the bedding is produced in the dry summer months the ending moisture content is very low making a clean and safe absorbent bedding material. Compost bedding is rapidly becoming the bedding of choice for WSU animal units because of reduced pathogen exposure and major cost savings over other bedding products. The feedstock for the bedding material includes:

90% used animal bedding (less than 10% manure content)
10% processed bedding compost

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