Total volatile hydrocarbon (TVH)
Total volatile hydrocarbon (TVH) means the total amount of nonaqueous volatile organic matter determined according to Methods 204 and 204A through 204F of appendix M to 40 CFR part 51 and substituting the term TVH each place in the methods where the term VOC is used. The TVH includes both VOC and non-VOC.
40 CFR § 63.4981
Terms used in this subpart are defined in the CAA, in 40 CFR 63.2, and in this section as follows: