Interim Approval of Section 112(l) Delegated Authority; Washington

EPA is promulgating final interim approval of the state of Washington Department of Ecology (Ecology) request for delegation of authority to implement and enforce state-adopted hazardous air pollutant regulations which adopt by reference the federal National Emission Standards for Hazardous Air Pollutants (NESHAP) contained within 40 CFR Parts 61 and 63, as these regulations apply to sources that are required to obtain a federal operating permit under 40 CFR Part 70 (i.e., Part 70 sources). EPA is also promulgating interim approval of certain local air agency potential-to-emit limiting regulations which will now be recognized as federally enforceable. At Ecology's request, EPA is delaying approval of certain other state and local potential-to-emit limiting regulations. These adopted regulations approved as part of this action will be implemented and enforced by both Ecology and/or the following local air authorities within the state of Washington: The Benton County Clean Air Authority (BCCAA); the Northwest Air Pollution Authority (NWAPA); the Olympic Air Pollution Control Authority (OAPCA); the Puget Sound Air Pollution Control Agency (PSAPCA); the Southwest Air Pollution Control Authority (SWAPCA); the Spokane County Air Pollution Control Authority (SCAPCA); and the Yakima County Clean Air Authority (YCCAA); collectively referred to as ``the Washington permitting authorities.''