Compost made by Recology Grover Environmental Products (RGEP) is produced at a 166-acre composting facility in the Central Valley town of Vernalis. About 40-50% of the food scraps and yard trimmings used as feedstock originate in Alameda County, including the cities of Albany, Berkeley, Emeryville, Hayward, Livermore, Oakland and the sanitary districts of Castro Valley and Oro Loma. RGEP’s compost is listed by the Organic Materials Review Institute (OMRI) and tested in the U.S. Composting Council’s Seal of Testing Assurance Program. While most of the compost goes to orchards, vineyards and landscaping projects outside of Alameda County, some of it comes back to Alameda County gardens through retail landscape supply yards and community giveaways organized by the cities in the county.