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Oklahoma Administrative Code (Last Updated: March 11, 2021) |
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TITLE 252. Department of Environmental Quality |
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Chapter 623. Pretreatment for Central Treatment Trusts |
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Subchapter 3. General Sewer Use Requirements |
SECTION 252:623-3-3. Local limits
Latest version.
- (a) Specific pollutant limits for publicly owned treatment works are established to prevent pass through and interference, to provide for sludge quality, and to protect worker health and safety from environmental risks. No person shall discharge wastewater in excess of concentrations established based on the Maximum Allowable Headworks Loadings and allocated to Significant Industrial Users as approved by the Approval Authority. Specific maximum allowable headworks loadings are established for the following pollutants:(1) Arsenic(2) Cadmium(3) Copper(4) Cyanide(5) Lead(6) Mercury(7) Nickel(8) Selenium(9) Silver(10) Zinc(b) Concentration limits for the pollutants in (a) of this Section will be allocated to significant industrial users by means of wastewater discharge permits. No significant industrial user shall discharge wastewater containing any of the pollutants in (a) of this Section in concentrations greater than the limits established in the user's wastewater discharge permit. All concentrations for metallic substances are for "total" metals unless indicated otherwise.(c) No user shall discharge wastewater containing any of the pollutants in (a) of this Section at greater than the background level concentrations established during the development and approval of Maximum Allowable Headworks Loadings for a CTT's publicly owned treatment works, without first obtaining a wastewater discharge permit from the DEQ.(d) Concentration limits for the pollutants in (a) of this Section shall apply to a user's discharge at a point or points determined by the DEQ and identified in the user's permit.(e) The DEQ may impose mass limitations in addition to or in place of concentration based limits on a case-by-case basis where flowrate fluctuates or increases are expected, or where production based mass effluent limitation guidelines are promulgated. The DEQ may also impose limits for other pollutants by means of wastewater discharge permits.