Authority: IC 13-14-8; IC 13-15-1-2; IC 13-15-2-1; IC 13-18-2; IC 13-18-3
Affected: IC 13-11-2; IC 13-13-5-1; IC 13-18-4
Sec. 7.
The combined wastestream formula is derived as follows:
Where: CT = The alternative concentration limit for the combined wastestreams.
Ci = The categorical pretreatment standard concentration limit for a pollutant in the regulated stream i.
Fi = The average daily flow (at least a thirty (30) day average) of stream i to the extent that it is regulated for such pollutant.
FD = The average daily flow (at least a thirty (30) day average) from any of the following:
FT = The average daily flow (at least a thirty (30) day average) through the combined treatment facility (includes Fi, FD, and unregulated streams).
N = The total number of regulated streams.
Where: MT = The alternative mass limit for a pollutant in the combined wastestream.
Mi = The categorical pretreatment standard mass limit for a pollutant in the regulated stream i (the categorical pretreatment mass limit multiplied by the appropriate measure of production). Fi, FD, FT, and N are defined in clause (A).
327 IAC 5-18-7