La. Admin. Code tit. 33 § IX-2717

Current through Register Vol. 50, No. 6, June 20, 2024

Section IX-2717 - Disposal of Pollutants into Wells, Publicly Owned Treatment Works or by Land Application

A. When part of a discharger's process wastewater is not being discharged into waters of the state or contiguous zone because it is disposed into a well, into a POTW, or by land application thereby reducing the flow or level of pollutants being discharged into waters of the state, applicable effluent standards and limitations for the discharge in an LPDES permit shall be adjusted to reflect the reduced raw waste resulting from such disposal. Effluent limitations and standards in the permit shall be calculated by one of the following methods.

1. If none of the waste from a particular process is discharged into waters of the state, and effluent limitations guidelines provide separate allocation for wastes from that process, all allocations for the process shall be eliminated from calculation of permit effluent limitations or standards.

2. In all cases other than those described in LAC 33:IX.2717.A.1, effluent limitations shall be adjusted by multiplying the effluent limitation derived by applying effluent limitation guidelines to the total waste stream by the amount of wastewater flow to be treated and discharged into waters of the state, and dividing the result by the total wastewater flow. Effluent limitations and standards so calculated may be further adjusted under LAC 33:IX.Chapter 43 to make them more or less stringent if discharges to wells, publicly owned treatment works, or by land application change the character or treatability of the pollutants being discharged to receiving waters. This method may be algebraically expressed as:

P=E x N / T

where:

P = the permit effluent limitation,

E = the limitation derived by applying effluent guidelines to the total wastestream,

N = the wastewater flow to be treated and discharged to waters of the state, and

T = the total wastewater flow.

B. LAC 33:IX.2717.A does not apply to the extent that promulgated effluent limitations guidelines:

1. control concentrations of pollutants discharged but not mass; or

2. specify a different specific technique for adjusting effluent limitations to account for well injection, land application, or disposal into POTWs.

C. LAC 33:IX.2717.A does not alter a discharger's obligation to meet any more stringent requirements established under LAC 33:IX.2701, 2703, 2705, and 2707.

La. Admin. Code tit. 33, § IX-2717

Promulgated by the Department of Environmental Quality, Office of Water Resources, LR 21:945 (September 1995), repromulgated by the Office of Environmental Assessment, Environmental Planning Division, LR 30:231 (February 2004).

AUTHORITY NOTE: Promulgated in accordance with R.S. 30:2001 et seq., and in particular Section 2074(B)(3) and (B)(4)