Where:
CTNVCH = Concentration of total non-vinyl chloride organic HAP, in parts per million by weight (ppmw).
Ci = Concentration of individual HAP present in the sample analyzed pursuant to § 63.11965(f)(1) excluding vinyl chloride, in ppmw, where a value of zero should be used for any HAP concentration that is below the detection limit.
40 C.F.R. §63.11980