(Eq. 1)
Where:
Pb = Percent of HAP solvent discharged to the atmosphere for each mix batch, percent;
Srec = Weight of HAP solvent recovered for each mix batch, lb;
Smix = Weight of HAP solvent loaded into the solvent mixer for each mix batch, lb.
Where:
%P7 = 7-day block average percent of HAP solvent discharged to the atmosphere, percent;
i = mix batch;
n = number of mix batches in 7-day block average.
40 C.F.R. §63.9520