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title 40
Protection of Environment
chapter I-i11
CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
part 63
PART 63—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES (CONTINUED)
subpart XX
Subpart XX—National Emission Standards for Ethylene Manufacturing Process Units: Heat Exchange Systems and Waste Operations
subjgrp 21
Heat Exchange System Requirements
Subjgrp 21. Heat Exchange System Requirements
§ 63.1085 - What are the general requirements for heat exchange systems?
