SECTION 98-4 [INDUSTRIAL WASTE SURCHARGE]

All persons discharging industrial waste into the public sewers shall be charged and assessed a surcharge, in addition to any sewer service charges, if these wastes have a concentration greater than the following "normal" concentrations:

  1. A five (5) day, 20 degrees C biochemical oxygen demand (BOD) of 225 mg/l; or
  2. A total suspended solids (TSS) of 225 mg/l; or
  3. A Total Kjehldahl Nitrogen (TKN) of 40 mg/l; or
  4. A Total Phosphorus of 6 mg/l; or
  5. Any other pollutants in excess of the “normal” level of such pollutants.

The amount of such surcharge shall reflect the cost incurred by CCWA in handling the excess pollutants. This surcharge shall include a proportionate share of the following: fixed charges for maintenance, operation and replacement of the sewerage system to include sewers, plants, pumping stations and other necessary systems including depreciation and other incidental expenses.

(A) Surcharge Determination

When the BOD, TSS, TKN, or Phosphorus of the water or waste accepted for admission to CCWA’s wastewater system exceeds the values of these constituents for "normal" wastewater the excess concentration shall be evaluated in terms of "normal" wastewater and be subject to a surcharge on the amount derived in accordance with the following formula:

Amount of surcharge = [B1 (B) + S1 (S) + P1 (P)] V

Where:

B1 = total operation, maintenance and replacement cost for treatment of a unit of BOD.
B = concentration of BOD from the user above the base level.
S1 = total operation, maintenance and replacement cost for treatment of a unit of TSS.
S = concentration of suspended solids from the user above the base level.
N1 = total operation, maintenance and replacement cost for treatment of a unit of TKN.
N = concentration of TKN from the user above the base level.
P1 = total operation, maintenance and replacement cost for treatment of a unit of Phosphorus.
P = concentration of Phosphorus from the user above the base level.
P1 = total operation, maintenance and replacement cost for treatment of a unit of any pollutant.
P = total contribution of any pollutant from the user above the base level.
V = volume contributed from the user per unit time.

(B) Annual Review and Billing

The rates of surcharges shall be reviewed annually by CCWA in order that the above factors may correctly represent current treatment cost, and may be modified at any time. Industrial waste surcharges provided for herein shall be prepared and rendered with the regular water and sewerage bill.

(C) Flow Measurement

The volume of flow used to compute industrial waste surcharges shall be based upon metered, estimated or prorated water consumption as shown in the records of meter reading maintained by CCWA. In the event that a person discharging waste into the public wastewater system produces evidence to the Manager that a significant portion of the total annual volume of water used for all purposes does not reach the public sewer system, an estimated percentage of total water consumption to be used in computing charges may be agreed upon between the Manager and the persons discharging industrial waste into the sewer. Some installations will require wastewater flow measurement as agreed upon by the Manager and the persons discharging the industrial waste into the sewer.

(D) Sampling Frequency and Methodology

The industrial waste of each person discharging the same into the public wastewater system shall be subject to periodic inspection and determination of characteristics and concentration of said waste shall be made semiannually, or more often as may be deemed necessary by CCWA. Samples shall be collected in such a manner as to be representative of the actual quality of the waste. All measurements, tests and analyses of waters and wastes to which reference is made in this ordinance shall be determined in accordance with Sec.98-11(A) and (B).

(E) Disputes

In the event that an analysis of waste, determined by the sampling and gauging of waste from a person or industry by CCWA is disputed; a program of resampling and gauging, with subsequent chemical determinations may be instituted as follows:

  1. The person or industrial user interested must submit a request for resampling and gauging of their waste to CCWA by letter and bind themselves to bear the expenses incurred by CCWA in the resampling and gauging and subsequent chemical determination of the waste.
  2. The chemist or engineer employed by the company or person responsible for the request submitted to CCWA must confer with CCWA’s representative in charge of gauging and sampling. They will establish the length of the rerun and the methods to be employed to determine the flow and to sample the flow.
  3. The chemist or engineer engaged by the person or industry may be present during the gauging and sampling operation and also in the laboratory during the chemical determination of the analysis.
  4. The results of the analysis, determined from the quantity and quality of the flow shall be considered by analysis of record and shall be used to establish current billing procedures.