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Energy & environment · 27/01/1994Updated: 10/15/2026 · 1 min read

Approval and Promulgation of Implementation Plan; Illinois

The Environmental Protection Agency (EPA) proposed rulemaking in response to a Petition for Reconsideration filed by Stepan Company regarding the Chicago Federal Implementation Plan for Ozone. The public comment period has been extended until February 15, 1994, at Stepan's request.

Original source language: Federal Register — Environmental Protection AgencyOpen original release →

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