Although the proposed sewage treatment works will be capable of treating certain abnormal industrial wastes, the actual treatment of such wastes will increase the cost of operating and maintaining the public sanitary sewerage system. Therefore, there is hereby imposed upon each person discharging such industrial waste into the public sanitary sewerage system a surcharge or surcharges which are intended to cover such additional cost. Such surcharges shall be in addition to the regular service charge set forth in Article XI of this Part 2 and shall be payable as hereinafter provided in the amount hereinafter provided.
The strength of any industrial waste, the discharge of which is to be subject to surcharge, shall be determined monthly or more frequently from samples taken either at the manhole referred to in § 371-34 hereof or at any other sampling point mutually agreed upon by the Borough and/or the Authority and the producer of such waste. The frequency and duration of the sampling period shall be such as, in the opinion of the Borough Council, will permit a reasonably reliable determination of the average composition of such waste. Samples shall be collected by a representative of the Borough or its authorized representative in proportion to the flow of waste, and composited for analysis in accordance with the latest edition of Standard Methods for the Examination of Water and Sewage as published by the American Public Health Association. Except as hereinafter provided, the strength of the waste so found by analysis shall be used for establishing the surcharge or surcharges. However, the Borough may, if it so elects, accept the results of routine sampling and analyses by the producer of such wastes in lieu of making its own sampling and analyses.
A.
In the event any industrial waste is found by the Borough, or its
authorized representative, to have a BOD in excess of 300 parts per
million, the producer of said waste shall be surcharged an amount
equal to the product of the actual volume of wastes in 1,000 gallons
per billing period, discharged to the public sanitary sewerage system,
and the BOD surcharge rate. The BOD surcharge rate shall be determined
by the following formula:
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Rc = 0.00834 p (C – 300)
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Where:
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Rc
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=
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the BOD surcharge rate in cents per 1,000 gallons of waste discharged.
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p
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=
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the average annual fixed, operating and maintenance cost of
secondary treatment processes per pound of BOD received at the treatment
works. Such secondary processes shall include chlorination as well
as trickling filter or activated sludge processes. (Prior to completion
of the first year of operation, the value of "p" shall be assumed
to be $0.04.)
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C
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=
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the average BOD of the industrial waste expressed in parts per million as determined in accordance with § 371-73 of this article.
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B.
The figure 300 appearing in the above formula corresponds to the
maximum BOD permissible without surcharge. The figure 0.00834 is the
factor to convert parts per million to pounds per 1,000 gallons. No
discount will be permitted for sewage or industrial wastes having
a BOD less than 300 parts per million.
A.
In the event any industrial waste is found, by the Borough, to have
an average suspended solid concentration in excess of 275 parts per
million, the producer of such waste shall be surcharged an amount
equal to the product of the actual volume of wastes in 1,000 gallons
per billing period discharged to the public sanitary sewerage system,
and the suspended solids surcharge rate. The suspended solids surcharge
rate shall be determined by the following formula:
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R2 = 0.00834 × B (S – 275)
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Where:
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R2
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=
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the suspended solids surcharge rate in cents per 1,000 gallons
of waste discharged.
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|
B
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=
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the average annual fixed, operating and maintenance cost of
the sludge digestion, sludge drying and sludge disposal operations
per pound of suspended solids received at the treatment works. (Prior
to completion of the first year of operation, the value of "B" shall
be assumed to be $0.04.)
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S
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=
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the average suspended solids concentration of the abnormal industrial waste expressed in parts per million as determined in accordance with § 371-73 of this article.
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B.
The figure 275 appearing in the above formula corresponds to the
maximum suspended solids concentration permissible without surcharge.
The figure 0.00834 is the factor to convert parts per million to pounds
per 1,000 gallons. No discount will be permitted for sewage or industrial
wastes having a suspended solids concentration less than 275 parts
per million.
The surcharges provided for in this article will be added to the service charges set forth in Article XI. They will be billed monthly and shall be due at the same time and shall be subject to the same penalty as set forth in § 371-71. Notwithstanding the foregoing provisions of this article, no surcharge will begin to accrue until after the sewage treatment works are put into operation.
