In addition to any other fees, charges, sewer
rents or sanitary district taxes provided by law, the owner or tenant
of any parcel of real property connected with the City's sewer system
by any means shall pay an industrial sewer use charge for use of the
wastewater treatment works for discharging industrial wastes or other
wastes accepted for admission into the system. The industrial sewer
use charge shall consist of, but not be limited to, the following
charges:
[Amended 3-20-1995 by L.L. No. 2-1995]
A.Â
The industrial sewer use charge shall be computed
by the City Engineer using the following formula and shall apply to
any industrial user at the discretion of the City Engineer:
IC
|
=
|
TC
——
100
|
[OQ
|
(QI)
——
(Q)
|
+
|
OB
|
(BI)
——
(B)
|
+
|
OS
|
(SI)
——
(S)
|
+
|
OP
|
(PI)
——
(P)
|
]
|
Where:
| ||
IC
|
=
|
Industrial sewer use charge for the billing
period.
|
TC
|
=
|
Total cost of treatment plant and collection
system for the billing period, made up of operation and maintenance
costs and debt service charges.
|
OQ
|
=
|
Percentage of TC attributable to wastewater
flow for the billing period.
|
OB
|
=
|
Percentage of TC attributable to removal of
BOD5 for the billing period.
|
OS
|
=
|
Percentage of TC attributable to removal of
TSS for the billing period.
|
OP
|
=
|
Percentage of TC attributable to removal of
total phosphorus for the billing period. Sum of OQ, OB, OS, and OP
must be 100.
|
QI
|
=
|
Average industrial waste flow (gallons/day)
for the billing period.
|
BI
|
=
|
Average loading rate of BOD5 (pounds/day) for the billing period from the industrial discharge.
|
SI
|
=
|
Average loading rate of TSS (pounds/day) for
the billing period from the industrial discharge.
|
PI
|
=
|
Average loading rate of total phosphorus (pounds/day)
for the billing period for the industrial discharge.
|
Q
|
=
|
Average wastewater flow (gallons/day) at the
treatment plant for the billing period.
|
B
|
=
|
Average loading rate of BOD5 (pounds/day) at the treatment plant for the billing period.
|
S
|
=
|
Average loading rate of TSS (pounds/day) at
the treatment plant for the billing period.
|
P
|
=
|
Average loading rate of total phosphorus (pounds/day)
at treatment plant for the billing period.[1]
|
[1]
Editor's Note: Former Subsection B, Leachate
fees, was repealed 1-5-2009 by L.L. No. 1-2009.
The industrial sewer use charge shall be based
upon the measured or estimated constituents and characteristics of
the wastewater discharge of the user, which may include but are not
limited to: flow rate, biochemical oxygen demand, total suspended
solids, phosphorous, nitrogen or total organic carbon. The wastewater
constituents used to calculate the industrial sewer use charge will
be those determined by the City Engineer. Any data provided by the
user may be used in addition to the data obtained by the City Engineer.
In applying the surcharge formula, the City
Engineer may represent flow discharged into the sewer system by:
A.Â
The amount of water supplied to the premises as shown
on the water meter or water records, if the premises are metered;
B.Â
The volume of wastewater discharged into the sewer
system as determined by the measurements and samples taken at a monitoring
facility installed by the owner of the property served by the sewer
system;
C.Â
Allowances for water not discharged to the sewer system
will be made at the discretion of the City Engineer; or
D.Â
A figure determined by the City Engineer by any combination
of the foregoing or by any other equitable method.
A.Â
The pollutant concentration of any wastewater shall be determined from the analysis of representative samples taken prior to discharge into the City sewers, taken by representatives of the City Engineer at sampling stations, as described in § 253-42 of this Part 3, at any period or time or of such duration and in such a manner as the City Engineer may elect or at any place or manner mutually agreed upon between the user and the City Engineer. The intent of any sampling procedure is to establish the pollutant concentration in the wastewater discharge during an average or typical working day. Sampling results taken by the industry in compliance with conditions in an industrial wastewater permit may also be used by the City Engineer in determining an average pollutant loading rate for the billing period. This concentration may be derived according to the best judgment of the City Engineer.
B.Â
The analysis of samples taken shall be performed in
a laboratory of the Department or a laboratory designated by the City
Engineer. The industrial waste surcharge and/or the acceptability
of the wastes shall be determined from said analysis.
C.Â
All surcharges shall be based on the analysis of the wastes from any plant or premises related to total volume of wastes determined under § 253-53 of this Part 3. The average value of the concentrations of pollutants measured during a three-month period, quarterly, shall be used in calculating the industrial waste surcharge.
D.Â
Whenever the wastes discharged from a premises to
a public sewer might be expected to show appreciable periodic variation
during the year due to manufacturing process or production variation
due to seasonal changes, the City Engineer may average the results
of the two or more series of analysis taken to reflect these variations
and thereby determine an average pollutant concentration.
In the event that a pollutant concentration determined through sampling conducted by the City Engineer is disputed by the industry, the industry may request that, in future samples by the City, enough volume be collected for the sample to be split in two parts. One part will be analyzed by the City and the other to be analyzed by the industry at a certified laboratory of their choice. The results of the industry analysis should be sent to the City Engineer and will be given consideration in determining average pollutant concentrations pursuant to §§ 253-57 and 253-58 of this Part 3.
Payment of the industrial sewer use charge within the time period allotted by the City Engineer shall be made to the City by the industrial user after receiving the industrial sewer use charge bill, unless other arrangements for payment have been made and approved by the City Engineer. Failure to submit payment of any industrial sewer use charge, as determined under §§ 253-50, 253-51, 253-52, 253-53, 253-54 and 253-56, will result in penalties and fines as prescribed under Article XII of this Part 3.