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Approvals and Promulgations of Implementation Plans - San Joaquin Valley Unified Air Pollution Control District, New Source Review (US Environmental Protection Agency Regulation) (EPA) (2018 Edition) The Law Library presents the complete text of the Approvals and Promulgations of Implementation Plans - San Joaquin Valley Unified Air Pollution Control District, New Source Review (US Environmental Protection Agency Regulation) (EPA) (2018 Edition). Updated as of May 29, 2018 EPA is taking final action on revisions to the San Joaquin Valley Unified Air Pollution Control District portion of the California State Implementation Plan. Specifically, EPA is taking final action on three amended District rules, one of which was submitted on March 7, 2008 and the other two of which were submitted on March 17, 2009. Two of the submitted rules reflect revisions to approved District rules that provide for review of new and modified stationary sources ("new source review" or NSR) within the District, and the third reflects revisions to an approved District rule that provides a mechanism by which existing stationary sources may voluntarily limit their operations to avoid the requirement to secure a Federally-mandated operating permit. The NSR rule revisions relate to exemptions from permitting and offsets requirements for certain agricultural operations, to the establishment of NSR applicability and offset thresholds consistent with a classification of "extreme" nonattainment for the ozone standard, and to the implementation of EPA's NSR Reform Rules. With respect to the revised District NSR rules, EPA is finalizing a limited approval and limited disapproval because, although the changes would strengthen the SIP, there are deficiencies in enforceability that prevent full approval. With respect to the rule pertaining to operating permit requirements, EPA is finalizing a full approval. EPA is also taking final action to remove certain obsolete conditions placed on previous approvals o