§ 1145.23. Specific pollutant limits (local limits).

The director shall adopt, revise, or rescind local limits by regulation pursuant to Section 1145.11. All persons discharging pollutants to wastewater facilities owned by or under the jurisdiction of the City of Columbus shall meet the applicable local limits as established by rule of the director.

(A)

Maximum composite sample concentration limits shall apply to any representative composite sample, except as provided for in paragraph (C) of this section.

(B)

Maximum composite sample concentrations for phenolic compounds, cyanide, and hydrocarbon FOG shall apply to any grab sample.

(C)

Hydrocarbon FOG analysis shall be performed using the test method for oil and grease — Hydrocarbons as described in Standard Methods.

(D)

Except as provided in paragraph (B) of this section, no grab sample collected at any time shall be in excess of one and one-half (1½) times the maximum composite sample concentration established by the director.

(E)

Mass limitations are available only to a user discharging a combined total of less than ten thousand (10,000) gallons per day directly to a sanitary sewer, combined sewer and/or at a designated trucked waste disposal site by means of trucked waste haulers.

(1)

Mass limitations are not available to a user who is subject to National Categorical Pretreatment Standards.

(F)

No user shall discharge wastewater containing pollutants specified in this section in excess of concentration or mass limits established by the director, unless issued a discharge permit by the director specifically allowing higher concentrations or masses. These higher concentrations or masses shall be conditioned with other requirements and shall not interfere with the general intent of this chapter.

(G)

The limitations for silver set forth by the director shall not be applicable to photographic processing facilities unless the user is identified as a "significant industrial user." Silver limitations for photographic processing are set forth in director's regulation published in the City Bulletin.

The Silver Code of Management Practices is considered a fully enforceable element of the POTW industrial pretreatment program and constitutes a local imitation for silver discharged from photographic processing facilities.

(Ord. No. 1327-2012, § 1, 7-23-2012, eff. 10-1-2012)