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STA Certified Compost

Product Testing for Compost Manufacturers

 

 

1)  Compost samples must only be sent to STA Compost-Certified Labs. 

 

-       These labs have passed the 3 times/year CAP “test-the-testers” program.

 

-       Compost testing results are automatically sent to both the USCC and the compost manufacturer by the lab.  For new enrollees, until you are set up we don’t get your results.  So just when we are first getting you set up, please let the Market Development Coordinator know after you get your results back.  That is when the USCC will let the lab know to add you on their end to the STA Certified Compost program, and complete the enrollment process. 

 

-       Fees for each lab sample are paid directly to the lab.

 

 

2)  Compost samples must be collected from ready-to-sell finished compost using TMECC compost sampling methods. 

-       Linked here is the Collecting Field Samplesdocument. You will need to print out this document in order to properly collect, prepare and ship your compost sample to an STA lab periodically. 

 

 

3)  Compost samples should be sent in using the Chain of Custody form.  Please be sure to check both the ‘STA Suite’ box and the ‘State DOT’ box (write in the state, IF requested), to get the appropriate tests completed.

-       Linked here is the ‘Chain of Custody’ form. You will need to print out this document in order to properly submit your compost sample to an STA lab periodically. 

 

 

4)  The frequency you need to send in a compost sample to the lab for testing is determined by the annual finished wet tonnage of compost you manufacture. 

 

  1 - 6,200 tons =

·      1 sample per 3 months

 

  6,201 - 17,500 tons =

·      1 sample per 2 months

 

  17,501 tons and above =

·      1 sample per 1 month