Source: https://www.law.cornell.edu/cfr/text/40/93.123
Timestamp: 2017-10-21 10:46:04
Document Index: 613197079

Matched Legal Cases: ['art 93', '§ 93', '§ 93', 'art 51', '§ 93', '§ 93', '§ 93', '§ 93', '§ 93', '§ 93', '§ 93']

40 CFR 93.123 - Procedures for determining localized CO, PM10, and PM2.5 concentrations (hot-spot analysis). | US Law | LII / Legal Information Institute
CFR › Title 40 › Chapter I › Subchapter C › Part 93 › Subpart A › Section 93.123
40 CFR 93.123 - Procedures for determining localized CO, PM10, and PM2.5 concentrations (hot-spot analysis).
§ 93.123 Procedures for determining localized CO, PM10, and PM2.5 concentrations (hot-spot analysis).
(a)CO hot-spot analysis.
(1) The demonstrations required by § 93.116 (“Localized CO, PM10, and PM2.5 violations”) must be based on quantitative analysis using the applicable air quality models, data bases, and other requirements specified in 40 CFR part 51, Appendix W (Guideline on Air Quality Models). These procedures shall be used in the following cases, unless different procedures developed through the interagency consultation process required in § 93.105 and approved by the EPA Regional Administrator are used:
(2) In cases other than those described in paragraph (a)(1) of this section, the demonstrations required by § 93.116 may be based on either:
(ii) A qualitative consideration of local factors, if this can provide a clear demonstration that the requirements of § 93.116 are met.
(b)PM10 and PM2.5hot-spot analyses.
(1) The hot-spot demonstration required by § 93.116 must be based on quantitative analysis methods for the following types of projects:
(2) Where quantitative analysis methods are not available, the demonstration required by § 93.116 for projects described in paragraph (b)(1) of this section must be based on a qualitative consideration of local factors.
(3) DOT, in consultation with EPA, may also choose to make a categorical hot-spot finding that § 93.116 is met without further hot-spot analysis for any project described in paragraph (b)(1) of this section based on appropriate modeling. DOT, in consultation with EPA, may also consider the current air quality circumstances of a given PM2.5 or PM10 nonattainment or maintenance area in categorical hot-spot findings for applicable FHWA or FTA projects.
(c)General requirements.
(4) CO, PM10, or PM2.5 mitigation or control measures shall be assumed in the hot-spot analysis only where there are written commitments from the project sponsor and/or operator to implement such measures, as required by § 93.125(a).
[ 58 FR 62235, Nov. 24, 1993, as amended at 71 FR 12510, Mar. 10, 2006; 73 FR 4441, Jan. 24, 2008]
40 CFR 93.127 — Projects Exempt From Regional Emissions Analyses.