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About Us

The Inland Empire Regional Composting Authority (IERCA) was created as a public entity on February 27, 2002 by a Joint Powers Agreement (JPA) between the Inland Empire Utilities Agency (IEUA) and Los Angeles County Sanitation Districts (LACSD). This agreement empowered both IEUA and LACSD to acquire, construct, operate and maintain a composting facility. IEUA and LACSD have jointly evaluated composting as an economically and environmentally-sound method of beneficially reusing biosolids that are generated from the wastewater treatment facilities operated by each.

IERCA Board of Directors
  • Jon Blickenstaff, Chairperson   -   Los Angeles County Sanitation Districts

  • Paul Hofer, Vice Chairperson   -   Inland Empire Utilities Agency

  • Margaret Finlay, Director   -   Los Angeles County Sanitation Districts

  • Robert Ferrante, Director   -   Los Angeles County Sanitation Districts

  • Jasmin A. Hall Director   -   Inland Empire Utilities Agency

  • Shivaji Deshmukh, Director   -   Inland Empire Utilities Agency

IERCA focuses on
  • Manufacturing in a cost effective manner an Exceptional Quality Compost in compliance with all local, state and federal regulations covering biosolid products
  • Promoting conservation and environmental protection while marketing SoilPro product compost for healthy soils
  • The success of the IERCA depends on teamwork, mutual trust and respect, and commitment to the highest standards of quality, responsibility, accountability and dedication

Contact Us

  • Inland Empire Regional Composting Authority
    12645 Sixth Street

    Rancho Cucamonga, CA 91739

  • Project Manager: Jeff Ziegenbein 909-993-1981

  • Assistant Project Manager: Mike Sullivan 562-699-7411

For more information or to order compost, please contact
  • Product sales: email for information at

  • Product inquiries: Marcus Coulombe  909-664-7824 or Jeff Ziegenbein 909-993-1981

  • Project Manager: Jeff Ziegenbein 909-993-1981

For Media information, please contact
  • IEUA, Executive Manager of External Affairs & Policy Development/Assistant General Manager Marcus Coulombe 909-993-1502

  • Los Angeles County Sanitation Districts, Public Information Office 562-699-7411 ext 2301

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