§ 2:363. Specific discharge limitations.

(a)

The director shall have the authority to develop and enforce any discharge limits based on EPA/state standards or criteria of pollutants into a MS4 by a point or non-point discharge. The director shall continue to develop these limits as necessary and to effectively enforce the limits in order that the purposes of this regulation may be fully served and that compliance with the requirements of the USEPA applicable to the MS4 may be met.

The effluent limitations shall include but not be limited to, prohibitions on discharges into any MS4 of any materials:

(1)

Containing any substance exceeding the following limits based upon a thirty (30) day average, which average may be determined by no less than one (1) discharge monitoring test for each monitoring period as required by permit:

Biochemical oxygen demand	BOD 5	15.0 mg/l
Chemical oxygen demand	COD	100.0 mg/l
Ammonia (as N)	NH 3 -N	10.0 mg/l
Oil and grease
	15.0 mg/l
pH	6.0 to 9.0
Total organic carbon	TOC	50.0 mg/l

 

(2)

Containing any pollutant by point or non-point discharge from any source that violates any effluent limitations as established by any federal or state law or as provided in this chapter.

(b)

The point source or non-point source dischargers shall provide necessary data, such as a stormwater management plan, to the director, when requested to show proof that the best practicable control technology, techniques and processes, procedures and methods are being used to minimize the discharge of pollutants into a storm sewer system.

(c)

New source, point source or non-point source dischargers shall provide necessary data, such as a stormwater management plan, to the Director, when requested, to show proof that the best available control technology, techniques and minimize the discharge of pollutants into a storm sewer system.

(d)

Under no circumstances shall the point source discharger dilute the effluent as a means of reducing pollutants levels into the system.

(e)

Any construction operation that results in the disturbance of one (1) acre or more of total land area is subject to the regulations of this chapter and EPA and DEQ regulations. Construction activities as described by the U.S. EPA are those that disturb large tracts of land that involve the use of heavy equipment such as bulldozers, cranes, and dump trucks. Construction activity frequently employs dynamite and/or other equipment to eliminate trees, bedrock, rockwork, and to fill or level land.

Such activities also engage in the installation of haul roads, drainage systems, and holding ponds that are typical of the industrial activity identified in CFR 122.26(b)(14)(i)—(x). A copy of the construction activities or other general discharge permit(s) shall be provided at the Director's request. EPA further indicates that runoff associated with construction activities "has the potential for serious water quality impacts," particularly with regard to sediments and other pollutants.

These regulations specifically apply to clearing, grading, and excavation activities. Not subject to regulation are disturbances of less than one (1) acre, unless the smaller parcel creates a significant stormwater quality or MSSS problem as stated in other sections of this chapter or future regulation that may be required by federal or state agency.

(f)

Potential discharge areas such as parking lots, subdivision development, construction-sites and etc. shall comply with all standards established by the city-parish government (planning and zoning, DPW engineering, DPW inspection, DPW environmental and etc.)

(Ord. No. 10966, § 1, 9-10-97; Ord. No. 13568, § 1, 4-26-06)