(a)
At least ninety days prior to commencement of their discharge, new
sources, and sources that become categorical users subsequent to the
promulgation of an applicable categorical standard, shall submit to
the superintendent an industrial waste discharge permit application.
(b)
The results of sampling and analysis of the nature and amount required
by the categorical standard or by the superintendent of regulated
pollutants in the discharge from each regulated process shall be reported.
The sample type, the amount sampled and the timing of sampling shall
be representative of daily wastewater flow patterns.
(Ordinance 940308, sec. 5.1, adopted 3/8/94)
(a)
Significant industrial users or other persons holding an industrial
waste discharge permit shall test, monitor and report the quality
of the pollutants entering the city’s collection system at a
frequency not less than every six months or as required in the industrial
waste discharge permit.
(b)
A composite sample shall be analyzed for the following parameters and any others required by the industrial waste discharge permit or deemed necessary by the superintendent to determine compliance with section 24.04.031: pH, BOD, TSS, O&G, COD and TOC.
(c)
Monitoring results shall be kept for a minimum of three years and
shall be the basis of calculating the wastewater treatment surcharge.
Monitoring results shall be reported with each industrial wastewater
discharge permit renewal.
(Ordinance 940308, sec. 5.2, adopted 3/8/94)
(a)
For those abnormal industrial wastes having a COD concentration of
2.25 or more times that of the BOD concentration, the surcharge will
be based on the COD category in lieu of the BOD category. Computations
of surcharges shall be based on the following formula:
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S = 1 + [(BOD - 200) + (TSS - 200) + (4 x O&G - 200)] x
0.001
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or
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S = 1 + [(0.44 x COD - 200) + (TSS - 200) + (4 x O&G - 200)]
x 0.001
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S = Surcharge factor used to multiply the amount charged
monthly for wastewater service based on flow. BOD, TSS, O&G and
COD refer to the concentration of these pollutants measured in mg/l
as reported by the permit holder or as measured by the superintendent.
If the values of any of these pollutants is less than the value of
the maximum concentration of normal wastewater, then these values
shall be dropped from the above formula used in computing S.
(b)
All flow rates, BOD, COD, O&G and TSS values used in determination
of the surcharge of major wastewater customers shall be reevaluated
on an annual basis and shall be adjusted to reflect any increase or
decrease in wastewater treatment costs based on the previous year’s
experience. However, if there is a major change in the operation to
cause changes in value, the values may be increased or decreased during
the calendar year based on a study of changes or actual measurements.
The permit holder may request an adjustment of surcharge after any
self-monitoring report.
(Ordinance 940308, sec. 5.3, adopted 3/8/94)
All pollutant analyses, including sampling techniques, to be
submitted as part of a wastewater discharge permit application or
report shall be performed in accordance with the techniques prescribed
in 40 CFR part 136, unless otherwise specified in an applicable categorical
pretreatment standard. If 40 CFR part 136 does not contain sampling
or analytical techniques for the pollutant in question, sampling and
analyses must be performed in accordance with procedures approved
by the EPA.
(Ordinance 940308, sec. 5.4, adopted 3/8/94)
Except as indicated as follows, a permit holder must collect
wastewater samples using flow-proportional composite collection techniques.
In the event flow-proportional sampling is infeasible, the superintendent
may authorize the use of time-proportional sampling or a minimum of
four grab samples where the user demonstrates that this will provide
a representative sample of the effluent being discharged. In addition,
grab samples may be required to show compliance with instantaneous
discharge limits.
(Ordinance 940308, sec. 5.5, adopted 3/8/94)
(a)
Each permit holder shall provide an accessible manhole or alternate
sampling point acceptable to the superintendent at the point or points
of connection to the public wastewater collection system which are
suitable for obtaining samples of the wastewater discharged. The sampling
manhole shall be located on a property line adjacent to public right-of-way
or shall be accessible by easement dedicated to the public.
(b)
Permit holders shall allow the superintendent ready access to all
parts of the premises for the purposes of inspection, sampling, records
examination and copying, and the performance of any additional duties.
The superintendent shall have the right to enter the premises of any
user to determine whether the user is complying with all requirements
of this article and any wastewater discharge permit or order issued
hereunder.
(Ordinance 940308, sec. 5.6, adopted 3/8/94)
Users subject to the reporting requirements of this article
shall retain, and make available for inspection and copying, all records
of information obtained pursuant to any monitoring activities required
by this article and any additional records of information obtained
pursuant to monitoring activities undertaken by the user independent
of such requirements. Records shall include the date, exact place,
method and time of sampling and the name of persons(s) taking the
samples; the dates analyses were performed; who performed the analyses;
the analytical technique or method used; and the results of such analyses.
These records shall remain available for a period of at least three
years.
(Ordinance 940308, sec. 5.7, adopted 3/8/94)
