A.
In addition to any other tax, fee, charge or sewer rent imposed or
levied for the construction, maintenance, operation, repair, improvement
and management of the City of Canandaigua sewerage system or any public
sewer tributary thereto, the owner or lessee of any parcel of real
property connected with such system or sewer, including but not limited
to real property connected to such system by means of a private sewer
or any public sewer tributary thereto, shall pay a sewer surcharge
for the use of the City of Canandaigua sewerage system or tributary
public sewer for discharging:
(1)
Any sewage, industrial wastes or other wastes accepted for admission
thereto in which the characteristics resulting from the pollutants
contained therein exceed the maximum values as stated in the definition
of "normal sewage" in this chapter and the rules and regulations;
or
(2)
Any waters such as stormwater connections from any building or yard, any drain from catch basins, lakes, swamps, ponds or swimming pool drains, cooling waters, or any other source of waters as defined in §§ 567-2 or 567-7, except with permission of the Director of Public Works as evidenced by a properly issued permit; or
(3)
Any groundwaters which enter the City of Canandaigua sewerage system
by infiltration of local or private sewage collection systems.
B.
The City of Canandaigua may impose an upper limit on the amount of
BOD, TSS Chlorine demand, phosphorous, nitrogen or COD that may be
discharged in order to prevent pass-through, interference or an overload
of the Canandaigua WWTF.
The formula for the sewer surcharge shall be computed by the
Director of Public Works. The amount of the surcharge shall be the
product of the surcharge factor and the established sewerage system
charge for operation and maintenance. The general form for the determination
shall be as follows:
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Where
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S.F.
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=
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Surcharge factor.
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BOD
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=
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Milligrams per liter of biochemical oxygen demand, as defined in § 567-2.
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SS
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=
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Milligrams per liter of suspended solids, as defined in § 567-2.
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C1D
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=
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Milligrams per liter of chlorine demand, as defined in § 567-2.
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P
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=
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Milligrams per liter of phosphorus, as defined in § 567-2
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TKN
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=
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Milligrams per liter of total kjeldahl nitrogen as defined in § 567-2.
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COD
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=
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Milligrams per liter of chemical oxygen demand, as defined in § 567-2.
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a
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=
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Proportion of operation and maintenance cost to treat one pound
of biochemical oxygen demand (BOD).
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b
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=
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Proportion of operation and maintenance cost to treat one pound
of suspended solids (SS).
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c
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=
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Proportion of operation and maintenance cost to treat one pound
of chlorine demand (C1D).
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d
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=
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Proportion of operation and maintenance cost to treat one pound
of phosphorus (P).
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e
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=
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Proportion of operation and maintenance cost to treat one pound
of total kjeldahl nitrogen.
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f
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=
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Proportion of operation and maintenance cost to treat one pound
of chemical oxygen demand.
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Notes:
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1.
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a, b, c, d, e and f, are decimal portions of the total operation
and maintenance costs (O & M) for the sewerage system. The values
shall be determined by the City Engineer on a yearly basis from data
accumulated during each preceding year from the actual operation and
maintenance costs.
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2.
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If any of the values for BOD, SS, C1D, P, TKN, or COD as determined by laboratory analysis are less than the respective normal values stated in § 567-2 or rules and regulations, the factor for that pollutant shall be eliminated from the formula.
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EXAMPLE 1: Treatment charge based on volume.
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An industry discharges into the public sewer system wastes which
have been found to contain the following:
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BOD -- 630 mg/1 - normal value 300 mg/1
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SS -- 280 mg/1 - normal value 350 mg/1
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C1D -- 50 mg/1 - normal value 25 mg/1
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P -- 45 mg/1 - normal value 10 mg/1
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Monthly volume of discharge = 100,000 gallons
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Normal O & M sewer charge = $.70/1,000 gallons
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Values for a, b, c, d, are, respectively, .53, .35, .08, .04
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S.F. = .53 (1.1) + .08 (1.0) = .04 (3.5)
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S.F. = 0.80
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Notes:
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1.
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Factor for SS is dropped because SS is less than 300 mg/1.
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2.
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Surcharge factors are rounded off to two decimal places.
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Normal sanitary sewer operation and maintenance charge
=
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 |
= $70 per month
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Surcharge = (.80) ($70) = $56
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Total sewerage treatment charge = $70 + $56 = $126
per month
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This example illustrates sewer use by large commercial
or industrial establishments, and not average residential users with
normal sewage.
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EXAMPLE 2: treatment charge based on unit rates.
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A commercial establishment discharging wastes into the public
sewer system is rated at 20 equivalent units. (One unit is equivalent
to a dwelling unit or lot, or 60,000 gallons per year of water consumption.)
The unit charge is $45 per unit per year.
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The establishment discharges wastes into the public sewer system
which have been found to contain the following concentrations of pollutants.
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BOD
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=
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450 mg/1
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|
SS
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=
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200 mg/1
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C1D
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=
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15 mg/1
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P
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=
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60 mg/1
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Values for a, b, c, d are, respectively,.3, .3, .1, .2
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Normal sanitary sewer charge = (20 units x $45) + $1 fixed district
parcel charge = $901 per year.
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Note: Factors for SS and C1D are dropped because
values are below normal limits.
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S.F. = (.3) (.5) + (.2) (5) = 1.15
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|---|---|---|---|
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Portion of unit charge which is cost of treatment =
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$27.55
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=
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.61
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$45
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Surcharge = (1.15) (.61) ($901) = $632.05
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Total sewer charge = $901 + $632.05 = $1533.05/year
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Both of these examples illustrate sewer use by large commercial
or industrial establishments, and not average residential users with
normal sewage.
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The sewer surcharge for unpolluted water discharge into the
City of Canandaigua sewerage system or tributary public sewer shall
be:
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(a)
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In the case of a volume charge as in Example 1, double the normal
sanitary sewer treatment charge based on the volume of metered water;
and/or
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(b)
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In the case of unit charge, the product of the following:
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1.
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Unit charge portion due to treatment cost.
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2.
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Pollutant surcharge factor, if any, as computed by formula.
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3.
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Normal sewer charge (see Example 2).
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Note: When excessive volumes of water (stormwater,
surface water, groundwater, etc.) enter the City of Canandaigua sewerage
system directly or by inflow or infiltration of the local sewage collection
systems, the Director of Public Works shall take the following actions:
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|---|---|---|
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1.
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Notice shall be given to the property owner or local governmental
unit responsible for the sewage collection system contributing excessive
volumes of water into the City of Canandaigua sewerage system.
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2.
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Within 30 days after notification to the property owner or local
governmental unit, an informal timetable for the elimination and/or
control of the excessive water shall be filed with the Director of
Public Works.
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3.
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A property owner or local governmental unit failing to provide
said timetable or not substantially complying with the scheduled abatement
of excessive inflow or infiltration to the timetable filed with the
Director of Public Works shall be surcharged for the excessive water.
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4.
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The surcharge shall be based in proportion to the determined
excess volume of water entering the City of Canandaigua sewerage system.
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The surcharge for a permittee with a permanent connection to the City of Canandaigua sewerage system or a tributary public sewer shall be surcharged on the City charges. Other users requiring a permit as provided in Article VIII will be charged administrative costs and the surcharge in the fee required to obtain the permit from the Director of Public Works.
The Director of Public Works shall compute all surcharges using the formula in § 567-58 and established factors. The data used to compute the surcharge will be supplied by inspections, by the application for permit and/or any method determined by the Director of Public Works after review of the facts which in his belief give, as nearly as possible, accurate volume determination and/or the average pollutant concentration. All surcharges shall be based on the analysis of wastes from any plant or premises in relation to the total volume of wastes and waters except in the case of special contracts in accordance with § 567-62. The data, once established as the average pollutant concentration, shall be used until inspection or other reliable proof justifies a change in the average pollutant concentration.
For adjustments of an account, for which payment has been received,
that results in an overpayment, said overpayment shall be a credit
to the account.
A.
The Director of Public Works may negotiate special contracts for
handling sewage, industrial wastes or other wastes for the following
conditions:
(1)
If an industry or establishment has a New York State Department of
Environmental Conservation-approved permit to discharge in a classified
watercourse; or
(2)
If the total volume or contribution of waste to the public sewer
system is greater than 500,000 gallons per day or 5% of the average
design capacity of water pollution control facility receiving the
waste; or
(3)
If the contributor is a local, state, or federal governmental agency;
or
(4)
If scavenger waste or other waste is so unusual that it is not covered
by scavenger waste or surcharge provisions of this chapter.
B.
The terms and conditions of special contracts shall not be at variance
with Federal Categorical Pretreatment Standards.
