---
kind: "section"
citation: "42 U.S.C. § 7511f"
title: "42"
title_heading: "The Public Health and Welfare"
number: "7511f"
heading: "NOx and VOC study"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/42/7511f"
units:
  - "Chapter 85 — Air Pollution Prevention and Control"
  - "Subchapter I — Programs and Activities"
  - "Part D — Plan Requirements for Nonattainment Areas"
  - "Subpart 2 — additional provisions for ozone nonattainment areas"
---

# §7511f. NOx and VOC study


The [Administrator](/usc/42/7602.md?p=a), in conjunction with the National Academy of Sciences, shall conduct a study on the role of ozone precursors in tropospheric ozone formation and control. The study shall examine the roles of NO<sub>x</sub> and [VOC](/usc/42/7602.md?p=s) emission reductions, the extent to which NO<sub>x</sub> reductions may contribute (or be counterproductive) to achievement of attainment in different [nonattainment areas](/usc/42/7501.md?p=2), the sensitivity of ozone to the control of NO<sub>x</sub>, the availability and extent of controls for NO<sub>x</sub>, the role of biogenic [VOC](/usc/42/7602.md?p=s) emissions, and the basic information required for air quality models. The study shall be completed and a proposed report made public for 30 days comment within 1 year of November 15, 1990, and a final report shall be submitted to Congress within 15 months after November 15, 1990. The [Administrator](/usc/42/7602.md?p=a) shall utilize all available information and studies, as well as develop additional information, in conducting the study required by this section.


## Source credit

(July 14, 1955, ch. 360, title I, § 185B, as added Pub. L. 101–549, title I, § 103, Nov. 15, 1990, 104 Stat. 2452.)