Specific pollutant and impurities limitations and special conditions.
Oklahoma City Municipal Code § 47-214
in effect§ 47-214. - Specific pollutant and impurities limitations and special conditions.
(a) Limits. The following pollutant limits are established to protect against pass-through and interference. No person shall discharge wastewater containing in excess of the following maximum allowable discharge limits:
Limits
0.35 | mg/l arsenic
0.05 | mg/l cadmium
1.50 | mg/l chromium
1.14 | mg/l copper
0.17 | mg/l cyanide
0.57 | mg/l lead
0.003 | mg/l mercury
0.61 | mg/l molybdenum
3.98 | mg/l nickel
0.04 | mg/l selenium
0.46 | mg/l silver
2.17 | mg/l zinc
* | mg/l BOD
* | mg/l suspended solids
100 | mg/l saturated or nonpolar oil and grease
200 | mg/l nonsaturated or polar oil and grease
*The Director shall set surcharge limits for biochemical oxygen demand (BOD) and suspended solids (TSS).
(b) Concentrations. Concentrations apply at the point where the industrial waste is discharged to the POTW. All concentrations for metallic substances are for "total" metal unless indicated otherwise. At his discretion, the Director may impose mass limitations in addition to or in place of the concentration based limitations above. At the Director's discretion, Best Management Practices (BMPs) may be utilized in addition to numeric limits. Records of BMPs must be kept in accordance with this chapter.
(c) Organic pollutants.
(1) At the discretion of the Director, the City may establish organic pollutant discharge limits for industrial users. Industrial users identified for organic pollutant discharge limits may be required to submit an organic compounds control plan containing such information as required by the Director.
(2) The explosivity and worker health and safety limit will be considered along with other environmental criteria such as allowable headworks loading and/or maximum allowable headworks loading for a specific POTW in the establishment of organic pollutant discharge limits for industrial users.
(3) Worker health and safety criteria are established pursuant to the O.S.H.A. or N.I.O.S.H. standards.
(d) Additional limitations and conditions for extrajurisdictional users.
(1) Permit limits and special conditions. The permit limits and special conditions to be imposed in the pretreatment permit will be issued at the discretion of the Director after reviewing the permit application. The Director reserves the right to reject a permit application and deny connection to the Oklahoma City sewer system based on the type of discharge; information in the permit application; protection of City facilities; and the ability of City facilities to maintain compliance with environmental requirements. The permittee shall be subject to all provisions of the City sewer use ordinances and policies of the Oklahoma City industrial pretreatment program. The Director reserves the right to terminate services to any user outside City limits when in his/her opinion the discharge from facilities outside the City limits begins to adversely impact either City facilities or permit compliance. The Director reserves the right to reopen any permit to a user outside the City limits at any time due to impacts to City Facilities or changes in environmental requirements.
(2) Maximum wastewater impurity concentration limits.
Maximum TDS Concentration = | 6,000 mg/L
Maximum Chloride Concentration = | 1,000 mg/L
Maximum Sulfate Concentration = | 1,000 mg/L
(e) Special conditions for City users and extrajurisdictional users.
(1) permittee shall be responsible for any damage to City facilities caused by or contributed to by the discharge of pollutants or impurities from permittee's facility. In order to minimize damage to City's facilities, the permittee may be required through surcharges or permit fees to pay for modifications to City facilities to minimize the impact of TDS, chlorides, and sulfates. These impacts may include, but not limited to include the design of a diffuser for rapid mixing of high TDS wastewater into the City's wastewater treatment and collection facilities, which will minimize damage from corrosion and the primary clarifier from density interference with the removal of BOD and TSS.
(2) in accordance with the City's discharge control policy, the permittee is being informed that at some time in the future additional pretreatment may be required to control the discharge of TDS, chloride, and sulfate from permittee's facility. These revised permit requirements will contain a compliance schedule with milestones for design and installation of pretreatment facilities.
(3) permittee shall provide, in its permit application, estimates of water requirements and wastewater based on operational controls at its facility. Permit limits have been developed for the permittee as not exceed concentration limits and monthly average mass limits. These not to exceed limits will allow the permittee flexibility in the design and operation of its facility within these limits. The permittee must be in compliance with discharge limits at all times. If the permittee must be in compliance with discharge limits at all times. If the permittee desires to change discharge flow and/or strength above its established permit limits, a new permit application shall be submitted to the City for review and approval prior to any changes.
(4) the City is under no obligation to grant approval of a revised permit that increases flow or strength. The City reserves the right to make any individual permit limits or discharge standards more restrictive. The City reserves the right to establish discharge standards and permit limits that are more restrictive for outside City users than for inside City users. The City reserves the right to make any individual permit limits or discharge standards more restrictive in order to meet any changes or modifications to State or Federal law or as it may determine to be in the best interest of The City of Oklahoma City and its users.
(Code 1980, § 41-2.4; Ord. No. 19830, § 1, 9-29-92; Ord. No. 20916, § 6, 10-21-97; Ord. No. 21759, § 1, 7-3-01; Ord. No. 22053, § 3, 10-8-02; Ord. No. 24155, § 4, 10-19-10; Ord. No. 25828, § 1, 1-2-18, eff. 2-1-18)
Source: City of Oklahoma City, Municipal Code and City Charter (Municode Library, library.municode.com)URL: https://library.municode.com/ok/oklahoma_city/codes/code_of_ordinances?nodeId=OKMUCO2020_CH47SESEDI_ARTVIIINHADI_DIV1GE_S47-214SPPOIMLISPCOFetched: 10/28/2026