929.08. Industrial waste surcharges.

   (a)   Applicability.

   All persons discharging industrial wastes into public sewers shall be subject to a surcharge, in addition to any other sewer-service charges, if these wastes have a concentration greater than the "normal" concentrations:

      (1)   A five-day, twenty-degree Centigrade biochemical oxygen demand (BOD) of 300 mg/l per million; or a chemical-oxygen-demand of 600 mg/l. Total organic carbon may be used where indicated for a specific waste, and correlation is established between TOC and COD or BOD.

      (2)   A suspended solids content of 400 mg/l; or

      (3)   A phosphorous content of 15 mg/l.

The amount of surcharge shall reflect the cost incurred by the City in removing the excess biochemical oxygen demand (BOD), suspended solids and phosphorous of the waste load. This surcharge shall include a proportionate share of the fixed charges and amortization costs for the sewage disposal works, and the annual cost of operation of the sewage treatment plant, including repairs, replacements and maintenance.

   (b)   Computation of surcharge.

   The surcharge per person shall be determined as follows: The excess pounds of biochemical oxygen demand (BOD), suspended solids and phosphorous will be computed by multiplying this product by the difference between the person's concentrations of biochemical oxygen demand (BOD), suspended solids and phosphorous and the aforementioned "normal" concentration in parts per million by weight. The surcharge of such constituent will then be determined by multiplying the excess pounds of each constituent by the appropriate rate of surcharge listed in subsection (c). Average concentration figures in the above calculations shall be determined in accordance with the provisions of section 930.041.

   (c)   Rates of surcharge.

 

	2007	2008	2009	2011	2012	2013	2014
Biochemical oxygen demand	15.1¢ per lb.	16.5¢ per lb.	18.2¢ per lb.	20.6¢ per lb.	21.2¢ per lb.	21.9¢ per lb.	22.5¢ per lb.
Chemical oxygen demand	7.6 ¢ per lb.	8.3 ¢ per lb.	9.2 ¢ per lb.	10.4 ¢ per lb.	10.7¢ per lb.	11.0¢ per lb.	11.4¢ per lb.
Suspended solids	11.2¢ per lb.	12.3¢ per lb.	13.5¢ per lb.	15.3¢ per lb.	15.8¢ per lb.	16.3¢ per lb.	16.8¢ per lb.
Phosphorus	$1.457 per lb.	$1.602 per lb.	$1.760 per lb.	$1.992 per lb.	$2.052 per lb.	$2.113 per lb.	$2.177 per lb.

 

   (d)   Delinquency.

   Such surcharges levied in accordance with these regulations shall be a debt due to the City and shall be a lien upon the property. If this debt is not paid when due it shall be subject to the late payment charge specified in Section 929.12 and may be collected as provided in Section 929.13.

(Ord. 525-07. Passed 8-7-07; Ord. 57-11. Passed 2-16-11.)