84-046 ORD PROVIDING CODE OF ORDINANCES BE AMENDED BY REVISING CHAPTER 31 SECTIONS 31-59 AND SECTION 31-91 OF SAID CODE

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ORDINANCE NO. 84-046 AN ORDINANCE OF THE CITY OF PARIS, PARIS, TEXAS, PROVIDING THAT THE CODE OF ORDINANCES, CITY OF PARIS, BE AMENDED BY REVISING CHAPTER 31, 5ECTIONS 31-59 AND SECTION 31-91 OF SAID CODE; ESTABLISHING THE LIMITS OF PERMISSIBLE AMMONIA DISCHARGE INTO THE SANITARY SEWERS OF THE CITY OF PARI5 AND ESTABLISHING SURCHARGES FOR THE EXCEEDING OF SAID LIMIT; PROVIDING FOR A PENALTY NOT TO EXCEED $200.00; REPEALING ALL ORDINANCES OR PARTS OF ORDINANCES IN CONFLICT HEREWITH; AND PROVIDING FOR EFFECTIVE DATES OF JULY 1, 1984 AND JULY 10, 1984. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF PARIS: Section l. That Section 31-59 of the Code of Ordinances of the City of Paris, Paris, Texas, be amended by adding thereto the following: "Section 31-59. Specific pollutant limitations. Not to exceed (all values are in mg/1) Monthly Daily Grab Average Composite Sample Ammonia 30 30 50 Section 2. That Section 31-91 of the Code of Ordinances of the City of Paris, Paris, Texas, be amended so that such shall read as follows: "Section 31-91. Surcharges. •••(c) A surcharge shall be levied on ammonia concentrations over 30 mg/1. Such surcharge shall be based on a direct ratio of nitrogenous oxygen demand (NOD) to carbonaceous oxygen demand (BODS) . This ratio is computed by dividing the 4.57 pounds of oxygen which are required to convert one pound of ammonia to nitrate by the 1.42 pounds of oxygen consumega the stabilization of one pound of carboneous matter. The BOD5 shall be multiplied by this ratio to determine an SCR ammonia which will surcharge the oxygen demand of excess ammonia at a rate equivalent to the oxygen demand of carbonaceous matter: (1) The NOD / BODS ratio is established at 3.22 for calculation of excessive ammonia surcharges. (2) SCR ammonia shall be equal to the existing SCR BOD5 multiplied by 3.22. No charge shall be made for ammonia levels of 30 mg/1 or less. (d) Unless otherwise specified, samples shall be twenty-four (24) hour composites. When a flow-recording device is provided the samples may be flow-weighted; otherwise, a simple composite sample shall be used. (e) The surcharges shall be based on all samples taken in the previous month or the most recent sample available. In no case shall the sampling basis be less than two (2) twenty-four (24) hour composite samples per year if a surcharge is levied. (f) The City may elect to set a minimum surcharge. Regular sampling may be suspended on those users, considered by the Supervisor to be consistently below the minimum surcharge. When sampling has been suspended, periodic grab samples may be used to determine if regular sampling should be reinstated. (g) Prior to the end of a surcharge period, the user may elect to have his discharge resampled by the City for purposes of 1