The biosolids produced by EBMUD are used primarily as a soil amendment on farms. Biosolids promote plant growth through improving soil properties, supplying nutrients, and replenishing soil organic matter. Federal regulations specify how the biosolids are land applied and how soon crops can be harvested from the fields after application.
EBMUD biosolids that are sent to compost are processed at the Central Valley Compost Facility in Dos Palos, CA. There they are blended with wood waste and cured in windrows. The resulting compost is sold in bulk to local farmers.
EBMUD biosolids that are sent to landfill are used as alternative daily cover to substitute the need for soil for covering the newly disposed waste material at the end of the day. This cover helps to control fires, reduce odors, and deter rodents and birds.