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Compost Rebate Program

Senate Bill (SB) 1383 regulations require jurisdictions to annually procure organic waste products such as compost, mulch, renewable gas, or electricity from biomass, according to targets that are calculated based on population of the jurisdiction. To help meet these requirements and to stimulate market demand for recovered organic materials like compost, the San Luis Obispo County IWMA is excited to offer a Compost Rebate Program. 

How does the Compost Rebate Program work?

 Step 1: Download, review and complete the Compost Rebate Agreement and Term Extension forms below. Please be sure to attach a copy of your most recent W-9.

Rebate Agreement and Term Extension FORM


Step 2: Complete the Payment Request Form (including receipt or invoice showing name of facility, date, and tons/cubic yards purchased). 

Payment Request Form


Only purchases made on the same day or after the agreement has been approved are eligible for the rebate. There will be no retroactive reimbursement.

  • Agreement shall expire at the end of the fiscal year and may be renewed on an annual basis.
  • Rebate is available for purchases totaling at least 20 tons and up to 3,000 tons purchased throughout the fiscal year. (If you purchase 20 cubic yards twice during the fiscal year, the two receipts can be submitted together to meet the minimum 20-ton threshold.)
  • Compost must be purchased from an approved facility. The approved facilties are:
    • B. Goodrow, Inc. Composting, Creston 
    • Buckeye Processing & MRF, Paso Robles
    • Hitachi Zosen Innova, San Luis Obispo
    • Engel & Grey Inc., Santa Maria
    • Keith Day Co., Salinas
    • Kochergen Farms Compost, Avenal
  • Compost must be SB 1383 compliant.
  • Proof of purchase must show the name of the compost facility, the date of the transaction, and the weight and volume of the compost that was purchased.
  • A copy of most recent W-9 is required for rebate.
  • Rebate is to be claimed only for the price of the compost, not transportation or spreading.


If you have any questions, please contact the IWMA at (805) 782-8530 or

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