35 Ill. Adm. Code 364.204
F2 Factor
Section 364
Section 364.204 F2 Factor
F2 is a factor which evaluates
the adequacy of existing facilities for treating the existing wastewater load
to design levels. It is calculated as follows:
F2
=
PE BOD, (existing wastewater
load, industrial and domestic)
PE BOD, existing design capacity
x
daily average flow, existing
load
+1
daily average flow, existing
design capacity