Air Plan Approval; California; Imperial County Air Pollution Control District
The Environmental Protection Agency (EPA) is taking final action to approve a revision to the Imperial County Air Pollution Control District (ICAPCD) portion of the California State Implementation Plan (SIP). This revision concerns emissions of oxides of nitrogen (NOX) from new and replacement residential-type natural gas-fired water heaters. We are approving a local rule that regulates these emission sources under the Clean Air Act (CAA or the Act).