(A)
The city may adopt reasonable fees for reimbursement of costs of setting up and operating the city's pretreatment program, which are found in this section, and subsection 31.01(D), which may include, but are not limited to:
(1)
Fees for wastewater discharge permits and cost of processing applications for permits;
(2)
Fees for monitoring, inspection, and surveillance procedures including the cost of collection and analyzing a user's discharge, and reviewing monitoring reports submitted by users;
(3)
Fees for reviewing and responding to accidental discharge procedures and construction;
(4)
Fees for filing appeals;
(5)
Recovery of administrative and legal costs associated with enforcement activity taken by the DCO to address industrial user noncompliance.
(6)
Other fees as the city may deem necessary to carry out the requirements contained herein. These fees relate solely to the matters covered by this chapter and are separate from all other fees, fines, and penalties chargeable by the city;
(7)
Fees for treating abnormal strength wastes; and
(8)
Fees incurred from an upset, bypass, or unauthorized discharge.
(B)
Users are required to pay applicable pretreatment charges and costs for:
(1)
Preparing and submitting baseline monitoring reports and construction plans, revising permit applications, required self-monitoring and reporting, and other reports or information required by the DCO;
(2)
Installation and operation of pretreatment facilities and other requirements pursuant to this chapter, that are the responsibility of the user;
(3)
Treating abnormal strength wastes (surcharges);
(4)
Disconnection and/or reconnection of service resulting from noncompliance;
(5)
Costs to the city or TRA incurred from an upset, bypass or unauthorized discharge;
(6)
Recovery of the costs to the city or TRA for filing appeals; and
(7)
Costs incurred by the city under administrative enforcement remedies in this chapter, including abatement and remediation expenses.
(C)
Surcharge:
(1)
The city may surcharge users for the treating of abnormal strength wastes, either as a single user surcharge or as a class surcharge.
(2)
The DCO shall have the authority to review and approve the discharge of all water or wastes having high strength concentrations of:
(3)
Where the DCO has approved the admission of high strength BOD, TSS or COD into the POTW as described in Subsection 171.59(C)(2)(a), (b) or (c) above, that discharge may be subject to a surcharge as determined by the DCO. The surcharge may be calculated on BOD and TSS values different from the normal concentrations of two hundred fifty (250) mg/L, or a COD concentration of 2.5 times that of the BOD concentration.
(4)
In no case shall a discharge be accepted that will prevent the POTW from meeting its NPDES or TPDES limits.
(5)
At the discretion of the DCO, users may be surcharged either as:
(6)
In no case shall a discharge of abnormally elevated conventional pollutants (BOD, TSS or COD) be accepted that will prevent the POTW from meeting its limits, damage the POTW, or endanger or harm any person.
(7)
The surcharge will be billed monthly, in addition to the usual monthly sewer service user fees.
(8)
The surcharge shall be calculated according to the following formula each month using the most current pollutant concentration data and the current month's wastewater flow:
Surcharge = [Q] [a (BOD - x) + b (TSS - y)] [8.34] [c] |
Or, for those abnormal wastes having a COD concentration 2.5 or more times that of the BOD concentration, the surcharge may, at the discretion of the DCO, be based on the COD category in lieu of the BOD category. Thus the surcharge shall be calculated according to the following formula:
Surcharge = [Q] [a (COD - z) + b (TSS - y)] [8.34] [c] |
Where: | |
Q = | wastewater flow in million gallons per month |
8.34 = | weight in pounds of one gallon of water (factor for converting mg/L to pounds per million gallons of water) |
x = | normal limits of BOD in domestic wastewater expressed in milligrams per liter, above which a surcharge is assessed |
y = | normal limits of TSS in domestic wastewater expressed in milligrams per liter, above which a surcharge is assessed |
z = | normal limits of COD in domestic wastewater expressed in milligrams per liter, above which a surcharge is assessed |
a = | unit cost in dollars, of treatment per pound of BOD or COD |
b = | unit cost in dollars, of treatment per pound of TSS |
c = | administrative overhead recovery factor in dollars |
BOD = | measured amount of BOD, in mg/L |
COD = | measured amount of COD, in mg/L |
TSS = | measured amount of TSS, in mg/L |
and, where the value of BOD, COD and/or TSS concentrations in this calculation will be an average of values determined by testing procedures, as defined in this chapter, on samples collected and/or accepted by the DCO. If the average of these concentrations is less than the value for the respective x, y or z, that term of the equation shall be dropped from the surcharge calculation.
(9)
The DCO may adjust the administrative recovery factor and the unit treatment costs in the formula to reflect increases or decreases in overhead and wastewater treatment costs.
(10)
Based on sampling analysis, adjustment in surcharges shall be made to reflect changes in the characteristics of the abnormal strength wastewater. Changes in charges shall continue for at least six billing periods, unless subsequent tests determine that the charge should be further increased.
(11)
A surcharge is an additional charge by the City for the increased cost of handling discharge of unusual strength and character and shall not serve as a variance to the requirements of this chapter. Exercise of this provision shall not be a bar to, or a prerequisite for, taking any other action against the user.
(Ordinance 4229 adopted 9/24/2024)