40 CFR Part 65, Table 2

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗

Halogenated vent stream?	Net heating value(MJ/scm)b	Vent stream flow rate (scm/min)c	Values of terms for TRE equation: TRE = A * [ B + C + D + E + F ]	Equation number
A	B	C	D	E \| F
Yes	0≤H ≤3.5	Q <14.2	1/ETOC	30.96334 \| 0 \| 0 \| −0.13064QH \| 0 \| 1
		14.2≤Q ≤18.8	1/ETOC	19.1837 \| 0.27580Q \| 0.757620Q0.88 \| −0.13064QH \| 0.01025Q0.5 \| 2
		18.8<Q ≤699	1/ETOC	20.00563 \| 0.27580Q \| 0.303870Q0.88 \| −0.13064QH \| 0.01025Q0.5 \| 3
		699<Q ≤1400	1/ETOC	39.87022 \| 0.29973Q \| 0.303870Q0.88 \| −0.13064QH \| 0.01449Q0.5 \| 4
		1400<Q ≤2100	1/ETOC	59.73481 \| 0.31467Q \| 0.303870Q0.88 \| −0.13064QH \| 0.01775Q0.5 \| 5
		2100<Q ≤2800	1/ETOC	79.59941 \| 0.32572Q \| 0.303870Q0.88 \| −0.13064QH \| 0.02049Q0.5 \| 6
		2800<Q ≤3500	1/ETOC	99.464 \| 0.33456Q \| 0.303870Q0.88 \| −0.13064QH \| 0.02291Q0.5 \| 7
	H >3.5	Q <14.2	1/ETOC	20.61052 \| 0 \| 0 \| 0 \| 0 \| 8
		14.2≤Q ≤18.8	1/ETOC	18.84466 \| 0.26742Q \| −0.200440Q0.88 \| 0 \| 0.01025Q0.5 \| 9
		18.8<Q ≤699	1/ETOC	19.66658 \| 0.26742Q \| −0.253320Q0.88 \| 0 \| 0.01025Q0.5 \| 10
		699<Q ≤1400	1/ETOC	39.19213 \| 0.29062Q \| −0.253320Q0.88 \| 0 \| 0.01449Q0.5 \| 11
		1400<Q ≤2100	1/ETOC	58.71768 \| 0.30511Q \| −0.253320Q0.88 \| 0 \| 0.01775Q0.5 \| 12
		2100<Q ≤2800	1/ETOC	78.24323 \| 0.31582Q \| −0.253320Q0.88 \| 0 \| 0.02049Q0.5 \| 13
		2800<Q ≤3500	1/ETOC	97.76879 \| 0.32439Q \| −0.253320Q0.88 \| 0 \| 0.02291Q0.5 \| 14
No	0≤H ≤0.48	Q <14.2	1/ETOC	11.0125 \| 0 \| 0 \| −0.17109QH \| 0 \| 15
		14.2≤Q ≤1340	1/ETOC	8.54245 \| 0.10555Q \| 0.090300Q0.88 \| −0.17109QH \| 0.01025Q0.5 \| 16
		1340<Q ≤2690	1/ETOC	16.94386 \| 0.11470Q \| 0.090300Q0.88 \| −0.17109QH \| 0.01449Q0.5 \| 17
		2690<Q ≤4040	1/ETOC	25.34528 \| 0.12042Q \| 0.090300Q0.88 \| −0.17109QH \| 0.01775Q0.5 \| 18
	0.48<H ≤1.9	Q <14.2	1/ETOC	13.4563 \| 0 \| 0 \| −0.16181QH \| 0 \| 19
		14.2≤Q ≤1340	1/ETOC	9.25233 \| 0.06105Q \| 0.319370Q0.88 \| −0.16181QH1 \| 0.01025Q0.5 \| 20
		1340<Q ≤2690	1/ETOC	18.36363 \| 0.06635Q \| 0.319370Q0.88 \| −0.16181QH \| 0.01449Q0.5 \| 21
		2690<Q ≤4040	1/ETOC	27.47492 \| 0.06965Q \| 0.319370Q0.88 \| −0.16181QH \| 0.01775Q0.5 \| 22
	1.9<H ≤3.6	Q <14.2	1/ETOC	7.96988 \| 0 \| 0 \| 0 \| 0 \| 23
		14.2≤Q ≤1180	1/ETOC	6.67868 \| 0.06943Q \| 0.025820Q0.88 \| 0 \| 0.01025Q0.5 \| 24
		1180<Q ≤2370	1/ETOC	13.21633 \| 0.07546Q \| 0.025820Q0.88 \| 0 \| 0.01449Q0.5 \| 25
		2370<Q ≤3550	1/ETOC	19.75398 \| 0.07922Q \| 0.025820Q0.88 \| 0 \| 0.01775Q0.5 \| 26
	H >3.6	Q <14.2	1/ETOC	6.67868 \| 0 \| 0.02220Q0.88 H0.88 \| −0.00707QH \| 0.02036H0.5 \| 27
		Q ≥14.2 and14.2≤Q*(H/3.6) ≤1180	1/ETOC	6.67868 \| 0 \| 0.02220Q0.88 H0.88 \| −0.00707QH \| 0.00540Q0.5 H0.5 \| 28
		Q ≥14.2 and1180<Q*(H/3.6) ≤2370	1/ETOC	13.21633 \| 0 \| 0.02412Q0.88 H0.88 \| −0.00707QH \| 0.00764Q0.5 H0.5 \| 29
		Q ≥14.2 and2370<Q*(H/3.6) ≤3550	1/ETOC	19.75398 \| 0 \| 0.02533Q0.88 H0.88 \| −0.00707QH \| 0.00936Q0.5 H0.5 \| 30
No	0≤H <11.2	All	1/ETOC	2.08 \| 2.25Q \| 0.288Q0.8 \| −0.193QH \| −0.0051ETOC \| 31
	H ≥11.2	All	1/ETOC	2.08 \| 0.309Q \| 0.0619Q0.8 \| −0.0043QH \| −0.0043ETOC \| 32

a Use according to procedures outlined in § 65.64(h).

b MJ/scm = mega Joules per standard cubic meter.

c scm/min = standard cubic meters per minute.