State OPR says agencies must quantify and mitigate greenhouse gas emissions from projects. But determining significance and cumulative impact is likely to be tricky.

Numerous cities and counties in the process of updating their general plans are addressing climate change with policies for mitigating greenhouse gas emissions and, to a lesser extent, adapting to changing conditions. Some localities have adopted climate action plans that affect the general plan and other long-term planning documents, while others have written specific general plan policies and implementation measures.

An air pollution fee on new development in the San Joaquin Valley has been upheld by a Fresno County Superior Court. Judge Donald Black rejected numerous arguments against the fee in a lawsuit filed by the California Building Industry Association (CBIA), the Modesto Chamber of Commerce, Valley Taxpayers Association and affordable housing developer Coalition of Urban Renewal Excellence.