The city shall establish a monitored group class, consisting of those customers whose wastewater strength is, in the city’s judgment, abnormally high. The city shall charge customers in this class, and shall compute such charges, in accordance with the following four-part rate schedule:
Monitored Group:
(1) Monthly service charge: As set forth in appendix
A of this code.
(2) Volume charge Volume charge: As set forth in appendix
A of this code.
(3) BOD and SS surcharge (according to the following formula):
S = C [(BOD - 290) + (SS - 270)](8.345)(V) + Monitoring Charge |
Where: |
S | = | Surcharge to user in dollars to be added to monthly billing for sewer. |
C | = | Unit cost of treatment @ $/lb. |
BOD | = | BOD strength index in mg/l. |
290 | = | Normal BOD strength in mg/l. |
SS | = | Suspended solids strength index in mg/l. |
270 | = | Normal suspended solids strength in mg/l. |
8.345 | = | Factor converting mg/l to pounds/gallons. |
V | = | Monthly income [volume] of wastewater discharged by monitored customer. |
Monitoring charge (testing) = Total cost to the city. The monitoring charge shall consist of all cost for personnel, material and equipment used to collect and analyze samples from the customer’s wastewater to determine the strength of the wastewater produced. |
(Ordinance 20-03 adopted 2/4/20; Ordinance 23-03 adopted 2/21/2023)