Health Protective Standards Report by ARB and OHHA for AB 1900

Click to view the complete AB 1900 Staff Report & Appendices pdf

Recommendations to the California Public Utilities Commission Regarding Health Protective Standards for the Injection of Biomethane into the Common Carrier Pipeline

The staff report of the California Air Resources Board and the Office of Health Hazard Assessment.

AB 1900, authored by Assemblyman Mike Gatto and chaptered into law on September 27, 2012 (Chapter 602, Statutes of 2012), requires the California Public Utilities Commission (CPUC) to develop standards for constituents in biogas to protect human health and pipeline integrity and safety, identify impediments that limit procurement of biomethane in California, and adopt policies and programs that promote the in-state production and distribution of biomethane. To support CPUC’s standards development efforts, the Office of Environmental Health Hazard Assessment (OEHHA) and the Air Resources Board (ARB), in consultation with other State agencies, are to undertake certain actions. Specifically, OEHHA is tasked with compiling a list of constituents of concern found in biogas that could pose a health risk and that are at levels that significantly exceed the concentrations of those constituents found in natural gas. OEHHA is also to determine health protective levels for these constituents. ARB is tasked with developing realistic exposure scenarios and identifying the associated health risk to utility workers and gas end users; determining the concentrations of these constituents in biogas necessary to protect public health; and identifying monitoring, testing, reporting, and recordkeeping requirements necessary to ensure that health protective standards are maintained.