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The Proposed Regulation you are attempting to access, "40 CFR 51 and 52 - Prevention of Significant Deterioration (PSD) and Nonattainment New Source Review (NNSR): Project Emissions Accounting", is reserved for Enviro.BLR.com subscribers.

Excerpt from "40 CFR 51 and 52 - Prevention of Significant Deterioration (PSD) and Nonattainment New Source Review (NNSR): Project Emissions Accounting"
EPA has proposed to revise certain New Source Review (NSR) applicability regulations to clarify the requirements that apply to sources proposing to undertake a physical or operational change (i.e., a project) under the NSR preconstruction permitting program.

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