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title 40
Protection of Environment
chapter I-i10
CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
part 63
PART 63—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES
subpart G
Subpart G—National Emission Standards for Hazardous Air Pollutants From the Synthetic Organic Chemical Manufacturing Industry for Process Vents, Storage Vessels, Transfer Operations, and Wastewater
appendix-i 25
Table 25 to Subpart G of Part 63—Effective Column Diameter (Fc)
- Table 25 to Subpart G of Part 63—Effective Column Diameter (Fc)
Column type
F
c
(feet)
9-inch by 7-inch built-up columns
1.1
8-inch-diameter pipe columns
0.7
No construction details known
1.0