Although the sewage treatment works are capable of treating certain abnormal industrial wastes, as heretofore defined in Article II of this chapter, 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 abnormal 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 sewage collection, transportation and treatment charges set forth in the prevailing Sewer Rate Ordinance of the Borough 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 if the Borough deems necessary, from samples taken either at the manhole or metering chamber referred to in § 157-16B hereof or at any other sampling point mutually agreed upon by the Borough and the producer of such waste. The frequency and duration of the sampling period shall be such as, in the opinion of the Borough, will permit a reasonably reliable determination of the average composition of such waste, exclusive of stormwater runoff. Samples shall be collected or their collection supervised by a representative of the Borough and shall be in proportion to the flow of waste, exclusive of stormwater runoff and composited for analysis in accordance with the current edition of Standard Methods for the Examination of Water and Wastewater. 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 samplings and analyses.
A. 
In the event that any industrial waste is found, by the Borough, to have a BOD5 in excess of 300 milligrams per liter, the producer of said waste shall be surcharged an amount equal to the product of the actual volume of wastes in thousand gallons per billing period, exclusive of stormwater runoff, discharged to the public sanitary sewerage system and the BOD surcharge rate. The BOD surcharge rate shall be determined by the following formula:
Rc
=
0.00834 X P X (C - 300)
Where:
Rc
=
the BOD surcharge rate in cents per 1,000 gallons of waste discharged
P
=
the average fixed operating and maintenance cost of secondary treatment processes per pound of BOD received at the treatment works (Prior to completion of the first year operation, the value of P shall be assumed to be $0.04.)
C
=
the average BOD5 of the industrial waste expressed in milligrams per liter as determined in accordance with § 157-39
B. 
The figure "300" appearing in the above formula corresponds to the maximum BOD5 permissible without surcharge. The figure "0.00834" is the factor to convert milligrams per liter to pounds per 1,000 gallons. No discount will be permitted for sewage or industrial wastes having a BOD5 of less than 300 milligrams per liter.
A. 
In the event that any industrial waste is found, by the Borough, to have an average suspended solids concentration in excess of 275 milligrams per liter, the producer of such waste shall be surcharged an amount equal to the product of the actual volume of wastes in thousand gallons per billing period, exclusive of stormwater runoff 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:
Rs
=
0.00834 X B X (S - 275)
Where:
Rs
=
the suspended solids surcharge rate in cents per 1,000 gallons of waste discharged
B
=
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.)
S
=
the average suspended solids concentration of the abnormal industrial waste expressed in milligrams per liter as determined in accordance with § 157-39 of this article.
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 milligrams per liter to pounds per 1,000 gallons. No discount will be permitted for sewage or industrial wastes having a suspended solids concentration of less than 275 milligrams per liter.
C. 
The surcharges provided for in this article shall be added to the regular sewerage service charge and any other industrial user charges imposed by the Borough under the prevailing Sewer Rate Ordinance. The surcharges shall be due at the same time and subject to the same late payment penalties and delinquency remedies established by the Borough for regular sewerage service charges.