StacksVerified U.S. regulatory reference

16 CFR Part 305, Appendix D5

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov
CapacityRange of estimated annualenergy costs(dollars/year)
Capacity (maximum flow rate); gallons per minute (gpm)Low | High
“Very Small”—less than 1.682 | 90
“Low”—1.7 to 2.7(*) | (*)
“Medium”—2.8 to 3.9(*) | (*)
“High”—4.0 and over(*) | (*)

(*) No data.

[88 FR 1136, Jan. 9, 2023]