September 6, 2008
Sta Program Formally Accepts Vermicompost and Digestate
Several modifications have been made to the Seal of Testing Assurance (STA) Program, a national compost certification program administered by the U.S. Composting Council. One major change is the inclusion of certification for vermicompost and digestate products, as long as they have gone through a composting phase. This change will make the program more inclusive as new products are developed and popularized. The program has also become more accessible to smaller composters (2,500 tons or less), with lower participation fees. Blended products containing STA certified composts now must include at least 25 percent compost to have the STA logo, instead of the former 15 percent. Only STA composts may be included in the blended product with the STA label. However, companies reselling certified compost in bulk, bagged or blended form can now use the STA logo even when the product is sold under a different product name.
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