40 CFR § 52.1637 - Particulate Matter (PM) Group II SIP commitments.

---
identifier: "/us/cfr/t40/s52.1637"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 52.1637 - Particulate Matter (PM) Group II SIP commitments."
title_number: 40
title_name: "Protection of Environment"
section_number: "52.1637"
section_name: "Particulate Matter (PM) Group II SIP commitments."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "52"
part_name: "APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 7401"
cfr_part: "52"
---


# 52.1637 Particulate Matter (PM) Group II SIP commitments.

(a) On August 19, 1988, the Governor of New Mexico submitted a revision to the State Implementation Plan (SIP) that contained commitments, from the Director of New Mexico Environmental Improvement Division, for implementing all of the required activities including monitoring, reporting, emission inventory, and other tasks that may be necessary to satisfy the requirements of the PM<sub>10</sub> Group II SIPs. The New Mexico Environmental Improvement Board adopted this SIP revision on July 7 and 8, 1988.

(b) The State of New Mexico has committed to comply with the PM<sub>10</sub> Group II State Implementation Plan (SIP) requirements, as articulated in the *Federal Register* notice of July 1, 1987 (52 FR 24670), for Dona Ana, Grant, Sandoval, Santa Fe, and Taos counties as provided in the New Mexico PM<sub>10</sub> Group II SIPs. In addition to the SIP, a letter from the Director of New Mexico Environmental Improvement Division, dated July 15, 1988, stated that:

This letter is in reference to PM<sub>10</sub> Group II State Implementation Plan (SIP) requirements. In response to the requirements of the July 1, 1987 *Federal Register,* notice on PM<sub>10</sub>, the Environmental Improvement Division has prepared a Committal SIP for Group II areas. As expressed in this SIP revision, the Division is committing to carry out all required actions such as monitoring, reporting, emission inventory development, and other tasks necessary to satisfy the SIP requirements for PM<sub>10</sub> Group II areas.

[54 FR 20579, May 12, 1989]