Fresno-Clovis Regional Wastewater Reclamation Facility Greenhouse Gas Emissions Estimate and Reporting to California Air Resources Board

City of Fresno, 
California

Fresno-Clovis Regional Wastewater Reclamation Facility Greenhouse Gas Emissions Estimate and Reporting to California Air Resources Board

Project Highlights: 
  • Perform GHG emissions reporting applicability checks
  • Estimate annual carbon dioxide equivalent emissions per regulatory standards – includes carbon dioxide, methane, and nitrous oxide
  • Report GHG emissions annually using the California Air Resources Board’s Online Reporting Tool (Cal e-GGRT: California’s electronic Greenhouse Gas Reporting Tool)
  • Evaluate need for further emissions data monitoring equipment
Fresno GHG graph
Carollo estimated and reported the Fresno-Clovis Regional Wastewater Reclamation Facility’s 2009, 2010, and 2011 cogeneration and general stationary combustion GHG emissions to the CARB using the online reporting tool.

Carollo estimated greenhouse gas (GHG) emissions for the Fresno-Clovis Regional Wastewater Reclamation Facility’s (RWRF) 2009, 2010, and 2011 reporting years. Fresno is required to report GHG emissions from the cogeneration and general stationary combustion (GSC) facilities to the California Air Resources Board (CARB) annually per California’s Global Warming Solutions Act of 2006, also known as Assembly Bill 32 (AB 32). Pursuant to AB 32, the GHG emissions estimates were generated using the methodologies provided in the “Mandatory Reporting of Greenhouse Gas Emissions: Instructional Guidance for Operators” and the “Regulation for the Mandatory Reporting of Greenhouse Gas Emissions.”

There are two steps in this process: (1) the reporting applicability check (estimating CO2 only), and (2) estimating GHG emissions for reporting purposes (estimating CO2, methane [CH4], and nitrous oxide [N2O]). Carollo submitted the 2009, 2010, and 2011 emissions estimates to CARB using their on-line reporting tool.

Since the U.S. EPA released their version of GHG mandatory reporting, CARB has revised their reporting regulation and on-line reporting tool to better-align with U.S. EPA’s regulation and tool. While the RWRF’s annual emissions do not exceed the reporting threshold for reporting to the U.S. EPA, the methodology followed for estimating their emissions satisfies the EPA’s requirements.