In addition to the wastewater service charges made by the city, all customers of the city that discharge industrial wastewater into the POTW shall pay the fees provided for herein. These fees may include:
(A) Fees for reimbursement of costs of setting up and operating the city's pretreatment program;
(B) Fees for monitoring, inspecting, sampling, and analyzing procedures;
(C) Fees for reviewing accidental discharge procedures and construction;
(D) Fees for permit applications and permits;
(E) Fees for removal by the city of pollutants otherwise subject to national categorical pretreatment standards;
(F) Ten percent late fee for any unpaid invoice which is 30 days past the due date;
(G) Industrial wastewater surcharge.
(1) The industrial wastewater surcharge is a reimbursement for exceptional treatment costs imposed on industrial users for exceeding the city wastewater treatment plant design criteria for domestic strength wastewater concentrations. Assessment of surcharges does not alleviate the industrial user of the responsibility to comply with pretreatment requirements. Consistent noncompliance by an industrial user will result in enforcement actions as defined by this chapter. Surcharges shall be calculated as follows:
Surcharge for TSS = S x S1 - Sd x 8.34 x Flow | |
Surcharge for BOD = B x B1 - Bd x 8.34 x Flow | |
S | Unit cost of treating TSS measured in dollars per pound ($/lb) |
S1 | TSS concentration measured in milligrams per liter (mg/l) |
Sd | TSS concentration in domestic wastewater measured in milligrams per liter (mg/l) |
B | Unit cost of treating BOD measured in dollars per pound ($/lb) |
B1 | BOD concentration measured in milligrams per liter (mg/l) |
Bd | BOD Concentration in domestic wastewater measured in milligrams per liter (mg/1) |
Flow | Volume discharged measured in million gallons per day (MGD) |
(2) The costs of treating total suspended solids and BOD shall be adjusted annually to reflect increases or decreases in wastewater treatment costs based on the previous year's experience. The initial coefficients of costs for use in the foregoing formula shall be:
S = $0.18/lb. and B = $0.18/lb.
(3) The city shall bill the discharger by the month and shall invoice industrial waste charges separate from the regular bill for water and sewer charges. The discharger shall pay monthly in accordance with practices existing for payment of sewer charges in Chapter 51 of the City of Willis Code of Ordinances.
(H) Monthly surcharge for all other contaminants. Industrial users shall be assessed a surcharge of $25 per contaminant per day for all other violations of the industrial pretreatment ordinance. Monthly surcharges is not a penalty payment for violations of the industrial users discharge permit but a reimbursement for exceptional treatment costs due to the additional pollutant loading of the treatment plant. Assessment of surcharges does not alleviate the industrial user of the responsibility to comply with pretreatment requirements. Consistent non-compliance by an industrial user will result in enforcement actions as defined by this chapter.
(I) Other fees as the city may deem necessary to carry out the requirements contained herein.
(Ord. 17-1121, passed 11-21-2017)