Inland Empire Regional Compost Authority

First Place
 Santa Ana River Basin Section

The Inland Empire Regional Composting Facility is the largest fully enclosed composting facility in the United States processing over 200,000 tons/year of biosolids and greenwaste. The facility was created as a partnership between Inland Empire Utilities Agency and the Los Angeles County Sanitation Districts to manage biosolids locally. It is operated by IEUA but the safety program is a partnership between the two agencies. The facility is highly industrial and has 11,000 truck trips, thousands of hours of heavy equipment time each year and has over 2 years with no recordable or loss time accidents. This is accomplished by a strong culture of safety, rewards and education.


The Plant Safety award is awarded in three categories: small, medium and large. Criteria include number of injuries, lost-time accidents, record keeping, in-house training, emergency response and program implementation.

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