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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 20
Applicability for Heat Exchange Systems
Subjgrp 20. Applicability for Heat Exchange Systems
§ 63.1083 - Does this subpart apply to my heat exchange system?
§ 63.1084 - What heat exchange systems are exempt from the requirements of this subpart?
