A. Allowable Discharges:
1. The following types of discharges shall not be prohibited discharges unless the director determines that the type of discharge, whether singly or in combination with others, causes contamination of surface water, stormwater or ground water; causes overload or damage to the MS4 or has the potential to endanger public health and safety; or causes the city to violate its OPDES municipal stormwater discharge permit:
a. Potable water discharges;
b. Potable water line flushing;
c. Diverted stream flows;
d. Rising ground water;
e. Uncontaminated ground water infiltration;
f. Uncontaminated pumped ground water;
g. Uncontaminated water from crawl space and footing drains;
h. Air conditioner condensations;
i. Irrigation water;
j. Springs;
k. Residential car washing (including charity car washes);
l. Flows from riparian habitats and wetlands;
m. Swimming pool discharges (e.g., discharges without significant amounts of chlorine);
n. Municipal street washing waters;
o. Residential building wash water without detergents;
p. Discharges in compliance with a separate Oklahoma pollutant discharge elimination system (OPDES) or national pollutant discharge elimination system (NPDES) permit; or
q. Discharges or flows from emergency firefighting activities provided that the incident commander, fire chief or other on scene firefighting official in charge makes an evaluation regarding potential releases of pollutants from the scene. Measures will be taken to reduce any such pollutant releases to the maximum extent practicable, subject to all appropriate actions appropriate to the circumstances that are necessary to ensure public health and safety. Discharges or flows from firefighting training activities are not authorized by OKR04 as allowable discharges. The incident commander of the firefighting scene shall report to the city manager any observed releases of chemicals into the MS4 and/or bodies of water. Local remediation will be implemented as appropriate to the conditions at the scene.
2. Dye testing shall be an allowable discharge, but shall require verbal notification to the director prior to testing. The city shall be exempt from this requirement.
3. Any discharge that has a current NPDES discharge permit with the EPA or has a current OPDES discharge permit with the ODEQ shall be an allowable discharge with the following exceptions:
a. A discharge that results in the city violating its OPDES municipal stormwater discharge permit;
b. A discharge the director determines causes contamination of surface water, stormwater or ground water within the city; or
c. A discharge that could block or damage the MS4.
4. Stormwater that is not commingled with stormwater associated with industrial activity and required to obtain an OPDES stormwater discharge permit before it may lawfully create a point source discharge into the MS4.
5. Any stormwater that is associated with industrial activity and has had pollutants removed by structural or nonstructural BMPs, to a level considered satisfactory by the director shall be an allowable discharge.
6. Other types of discharges determined allowable by the director.
B. Prohibited Discharges:
1. It shall be unlawful and a misdemeanor offense to discharge or allow the discharge of any of the following into the city's MS4:
a. All nonstormwater except those classified as an allowable discharge in subsection A of this section;
b. Any stormwater from any activity required to obtain an OPDES stormwater discharge permit, unless the discharge is authorized by a valid OPDES stormwater discharge permit;
c. Any spilled pollutants, unless it can be demonstrated that failure to allow the discharge will result in a greater imminent peril or hazard to the life, health, welfare, or safety of the public; or
d. Any material that is disposed of or dumped in such a manner that causes pollutants to be discharged.
2. It shall be unlawful and a misdemeanor offense for any person to place, store or locate any material in such a manner that causes pollutants to be transported by wind, rain or other atmospheric conditions into the city's MS4.
3. Any point source discharge into the city's MS4 that either singly or in conjunction with other discharges causes the city to violate its OPDES municipal stormwater discharge permit shall be prohibited.
4. It shall be unlawful and a misdemeanor offense for any person to dispose of grass, dirt, leaves, trash or other pollutants into the city's MS4.
5. Any illicit discharge, except those allowable pursuant to subsection A of this section, shall be prohibited. (Ord. 1910 § 2, 2007)