---
kind: "unit"
title: "40"
title_heading: "Protection of Environment"
key: "chI/subchC/part52/subpartYY"
level: "subpart"
label: "Subpart YY"
heading: "Wisconsin"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/40/chI-subchC-part52-subpartYY"
sections_count: 24
---

# Subpart YY — Wisconsin

Title 40 C.F.R. — Protection of Environment › Chapter I — Environmental Protection Agency › Subchapter C — Air Programs › Part 52 — Approval and Promulgation of Implementation Plans

## Sections

- [§52.2569. Identification of plan—conditional approval.](/cfr/40/52.2569.md)
- [§52.2570. Identification of plan.](/cfr/40/52.2570.md)
- [§52.2571. Classification of regions.](/cfr/40/52.2571.md)
- [§52.2572. Approval status.](/cfr/40/52.2572.md)
- [§52.2573. General requirements.](/cfr/40/52.2573.md)
- [§52.2574. Legal authority.](/cfr/40/52.2574.md)
- [§52.2575. Control strategy: Sulfur dioxide.](/cfr/40/52.2575.md)
- [§52.2576. Reserved](/cfr/40/52.2576.md)
- [§52.2577. Attainment dates for national standards.](/cfr/40/52.2577.md)
- [§52.2578. Compliance schedules.](/cfr/40/52.2578.md)
- [§52.2579-52.2580. Reserved](/cfr/40/52.2579-52.2580.md)
- [§52.2581. Significant deterioration of air quality.](/cfr/40/52.2581.md)
- [§52.2582-52.2583. Reserved](/cfr/40/52.2582-52.2583.md)
- [§52.2584. Control strategy; Particulate matter.](/cfr/40/52.2584.md)
- [§52.2585. Control strategy: Ozone.](/cfr/40/52.2585.md)
- [§52.2586. Small business stationary source technical and environmental compliance assistance program.](/cfr/40/52.2586.md)
- [§52.2587. Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of nitrogen oxides?](/cfr/40/52.2587.md)
- [§52.2588. Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of sulfur dioxide?](/cfr/40/52.2588.md)
- [§52.2589. Wisconsin construction permit permanency revision.](/cfr/40/52.2589.md)
- [§52.2590. Operating permits.](/cfr/40/52.2590.md)
- [§52.2591. Section 110(a)(2) infrastructure requirements.](/cfr/40/52.2591.md)
- [§52.2592. Review of new sources and modifications.](/cfr/40/52.2592.md)
- [§52.2593. Visibility protection.](/cfr/40/52.2593.md)
- [§52.2594. Original identification of plan section.](/cfr/40/52.2594.md)