R 323.2313 Alternative categorical limits.

Rule 13. Categorical pretreatment standards shall apply to a nondomestic user subject to categorical standards, unless an enforceable alternative limit to the corresponding national categorical standards is derived using any of the following methods: (a) 40 C.F.R. §403.7 (1993) contains the requirements for removal credits that reflect the removal of pollutants by a publicly owned treatment works discharged by the nondomestic user. (b) 40 C.F.R. §403.13 (1992) contains the requirements for a fundamentally different factor variance to reflect the existence of data and information that was not considered or available when the national categorical pretreatment standard was promulgated. (c) 40 C.F.R. §403.15 (1992) contains the requirements for a net/gross calculation to reflect the presence of pollutants in the intake water of a nondomestic user. (d) R 323.2311(5) contains the requirements for equivalent mass per day limitations. (e) R 323.2311(7) contains the requirements for combined wastestream formula alternative limitations.