Statutes, codes, and regulations
Louisiana Administrative Code
Title 33 - ENVIRONMENTAL QUALITYPart IX - Water QualitySubpart 2 - The Louisiana Pollutant Discharge Elimination System (LPDES) Program
Chapter 57 - Toxic Pollutant Effluent Standards and Prohibitions
Section IX-5725 - Benzidine

La. Admin. Code tit. 33 § IX-5725

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Current through Register Vol. 50, No. 6, June 20, 2024
Section IX-5725 - Benzidine
A. Specialized Definitions
1. Benzidine Manufacturer- a manufacturer who produces benzidine or who produces benzidine as an intermediate product in the manufacture of dyes commonly used for textile, leather and paper dyeing.
2.Benzidine-Based Dye Applicator- an owner or operator who uses benzidine-based dyes in the dyeing of textiles, leather or paper.
3. The ambient water criterion for benzidine in waters of the state is contained in LAC 33:IX.Chapter 11 (Surface Water Quality Standards).
B. Benzidine Manufacturer
1. Applicability
a. These standards apply to:
i. all discharges into the waters of the state of process wastes; and
ii. all discharges into the waters of the state of wastes containing benzidine from the manufacturing areas, loading and unloading areas, storage areas, and other areas subject to direct contamination by benzidine or benzidine-containing product as a result of the manufacturing process, including but not limited to:
(a). stormwater and other runoff except as hereinafter provided in LAC 33:IX.5725.B.1.b; and
(b). water used for routine cleanup or cleanup of spills.
b. These standards do not apply to stormwater runoff or other discharges from areas subject to contamination solely by fallout from air emissions of benzidine, or to stormwater runoff that exceeds that from the 10-year 24-hour rainfall event.
2. Analytical Method Acceptable
a. Environmental Protection Agency method specified in 40 CFR Part 136 (see LAC 33:IX.4901).
3. Effluent Standards
a. Existing Sources. Discharges from a benzidine manufacturer shall not contain benzidine concentrations exceeding an average per working day of 10 [MICRO]g/L calculated over any calendar month, and shall not exceed a monthly average daily loading of 0.130 kg/kkg of benzidine produced, and shall not exceed 50 [MICRO]g/L in a sample(s) representing any working day.
b. New Sources. Discharges from a benzidine manufacturer shall not contain benzidine concentrations exceeding an average per working day of 10 [MICRO]g/L calculated over any calendar month, and shall not exceed a monthly average daily loading of 0.130 kg/kkg of benzidine produced, and shall not exceed 50 [MICRO]g/L in a sample(s) representing any working day.
4. The standards set forth in LAC 33:IX.5725 shall apply to the total combined weight or concentration of benzidine, excluding any associated element or compound.
C. Benzidine-Based Dye Applicators
1. Applicability
a. These standards apply to:
i. all discharges into the waters of the state of process wastes; and
ii. all discharges into the waters of the state of wastes containing benzidine from the manufacturing areas, loading and unloading areas, storage areas, and other areas subject to direct contamination by benzidine or benzidine-containing product as a result of the manufacturing process, including but not limited to:
(a). stormwater and other runoff except as hereinafter provided in LAC 33:IX.5725.C.1.b; and
(b). water used for routine cleanup or cleanup of spills.
b. These standards do not apply to stormwater runoff or other discharges from areas subject to contamination solely by fallout from air emissions of benzidine, or to stormwater that exceeds that from the 10-year 24-hour rainfall event.
2. Analytical Method Acceptable
a. Environmental Protection Agency method specified in 40 CFR Part 136 (see LAC 33:IX.4901); or
b. mass balance monitoring approach which requires the calculation of the benzidine concentration by dividing the total benzidine contained in dyes used during a working day (as certified in writing by the manufacturer) by the total quantity of water discharged during the working day.

[Comment: The state administrative authority shall rely entirely upon the method specified in 40 CFR Part 136 (LAC 33:IX.4901) in analyses performed for enforcement purposes.]

3. Effluent Standards
a. Existing Sources. Discharges from benzidine-based dye applicators shall not contain benzidine concentrations exceeding an average per working day of 10 [MICRO]g/L calculated over any calendar month, and shall not exceed 25 [MICRO]g/L in a sample(s) or calculation(s) representing any working day.
b. New Sources. Discharges from benzidine-based dye applicators shall not contain benzidine concentrations exceeding an average per working day of 10 [MICRO]g/L calculated over any calendar month, and shall not exceed 25 [MICRO]g/L in a sample(s) or calculation(s) representing any working day.
4. The standards set forth in LAC 33:IX.5725.C shall apply to the total combined concentrations of benzidine, excluding any associated element or compound.

La. Admin. Code tit. 33, § IX-5725

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 30:232 (February 2004).
AUTHORITY NOTE: Promulgated in accordance with R.S. 30:2001 et seq., and in particular Section 2074(B)(3) and (B)(4)