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Compost Rebate Program

If you purchase compost for your business, you could be eligible for the IWMA's 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 SB 1383 requirements and to stimulate market demand for recovered organic materials like compost, the San Luis Obispo County IWMA is excited to offer our Compost Rebate Program. We provide a $10 ton rebate on eligible purchases of compost made from recovered organic waste product locally.

As of July 01, 2024, our form process has streamlined! Purchasers, please review the program overview below before form submittal, and reach out to or call the IWMA at (805) 782-8530 if you have any questions.

How does the Compost Rebate Program work?

 Step 1:   Review the complete Program Terms and Conditions (below), and purchase between 20 and 3,000 tons of compost from an approved facility.

Compost Rebate Program Terms and Conditions

Step 2:   Complete the Rebate Request Form online via Docusign. Please be sure to attach Proof of Purchase, and include W-9 with first Rebate Request. Alternatively, applicants can print and complete form, and email scanned copy to

Rebate Request Form (docusign)

Compost Rebate Request Form.pdf


Program Overview

  • The Compost Rebate Program is available to businesses and residents in San Luis Obispo County that purchase compost from an approved facility.
  • Rebate is available for purchases totaling at least 20 tons and up to 3,000 tons purchased throughout the fiscal year. Purchasers may make multiple separate purchases throughout the calendar year and submit together to reach 20 ton threshold.
  • Compost must be purchased from an approved facility. The approved facilities 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
  • Proof of Purchase must show the name of the compost facility, the date of the transaction, and the weight (tons) of compost that was purchased.
  • A copy of most recent W-9 is required for rebate. W-9 is only required to be submitted once throughout program duration, or when W-9 information changes.
  • 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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