What changed between these versions
A substantive clarification of the Clean Air Act's permitting requirements. v2 adds specific definitions for what constitutes "construction" for the purposes of Prevention of Significant Deterioration (PSD) and Nonattainment New Source Review (NSR) preconstruction permitting, focusing on physical construction of emissions units. This narrows the scope of activities that trigger these stringent review processes.
Overview
A handful of significant changes concentrated in two sections of the bill. · v2 clarifies and potentially narrows the scope of activities considered "construction" for preconstruction permitting under the Clean Air Act, by adding specific criteria for what triggers these requirements.
The most significant changes in v2 involve the addition of explicit definitions for "construction" within the context of the Clean Air Act's Prevention of Significant Deterioration (PSD) and Nonattainment New Source Review (NSR) programs. These new provisions specify that preconstruction requirements apply only to the physical construction of discrete parts of an emissions unit, regardless of other on-site activities. This clarification aims to provide more certainty regarding when a project triggers stringent permitting reviews, effectively narrowing the types of activities that would be considered "construction" for these purposes. Other sections of the bill, including the short title, modification definitions, and the rule of construction, remain unchanged.
Major additions
This new subsection adds a new subsection (f) to Section 165 of the Clean Air Act. It specifies that the preconstruction requirements for Prevention of Significant Deterioration (PSD) apply only to construction involving the physical construction of discrete parts of an emissions unit at a major emitting facility. It explicitly states that other physical on-site activities, even if costly, significantly altering the site, permanent, or to accommodate an installation, do not trigger these requirements on their own. It also defines 'emissions unit' as any part of a stationary source that emits or has the potential to emit any regulated air pollutant.
This addition significantly clarifies and potentially limits the scope of activities that trigger PSD preconstruction permitting. By focusing solely on the physical construction of an 'emissions unit,' it aims to reduce regulatory burdens for facilities undertaking other types of site alterations or preparatory work that do not directly involve the emission-generating components. This could streamline project development and reduce the number of projects subject to lengthy and complex permitting processes.
This new subsection amends Section 172(c)(5) of the Clean Air Act by adding language that defines "construction" for nonattainment area permits. Similar to Section 3(a), it specifies that construction requiring a permit involves the physical construction of the discrete parts of an emissions unit at a major stationary source. It clarifies that other physical on-site activities, regardless of their cost, impact on the site, permanence, or purpose of accommodating an installation, do not constitute "construction" for these permitting purposes.
This addition provides a parallel clarification for nonattainment area permitting, mirroring the changes made for PSD. It aims to reduce ambiguity and potentially streamline permitting for facilities in nonattainment areas by narrowing the definition of what constitutes 'construction' that triggers permit requirements. This could reduce the regulatory burden on facilities undertaking projects that do not involve the direct physical construction of new emission-generating components.
Scope
Meaningful expansion or narrowing — Changes are concentrated in Sections 3 and 4, which deal with the definitions and applicability of construction for Clean Air Act permitting programs. — v2 represents a meaningful clarification and potential narrowing of policy direction regarding what activities trigger preconstruction permitting under the Clean Air Act. It shifts the focus of 'construction' to the physical creation of emissions units, rather than broader site activities. — The new definitions of 'construction' directly interact with and refine the applicability of existing preconstruction review provisions under Sections 165 (PSD) and 172(c)(5) (Nonattainment Areas) of the Clean Air Act, potentially altering how these long-standing regulations are applied to new projects.
Impact analysis
Major emitting facilities and stationary sources subject to Clean Air Act permitting
This group gains increased clarity and potentially reduced regulatory obligations and costs for projects that fall outside the new, narrower definition of 'construction' for permitting purposes.
The definition of 'construction' for preconstruction permitting under PSD and Nonattainment NSR is clarified and narrowed. Activities that do not involve the physical construction of discrete parts of an emissions unit will no longer trigger these stringent permitting requirements, even if they are costly or significantly alter the site.
Environmental Protection Agency (EPA) and state permitting authorities
This group experiences a procedural change, with clearer guidelines for permit applicability, potentially leading to more consistent application of regulations but also a narrower scope of projects subject to review.
The criteria for determining when preconstruction permits are required for major emitting facilities are more explicitly defined, potentially reducing discretion in interpreting 'construction' and focusing enforcement on physical emissions unit development.