[Amended 9-25-1990 by Ord. No. 40-90; 10-8-1991 by Ord. No. 27-91]
For purposes of this Part 2, the following terms shall have
the meanings indicated:
COLLECTOR SYSTEM or COLLECTOR LINES
Any pipes to be utilized for the collection of sanitary sewage
and which lead to and connect to sanitary sewer lines operated and
maintained by the Township of Mount Olive.
INFLOW and INFILTRATION
The allowing of stormwater and/or groundwater to seep into
or leak into sanitary sewer collector lines.
In connection with the construction and installation of new
sanitary collector lines and/or collector systems, the following test
or tests shall be made: A V-notch weir or approved measuring device
shall be installed at the end of the sewer, and the leakage measured
and observed over at least a continuous forty-eight-hour period and
shall include a period of observation during a period of wet weather.
The following maximum leakage allowance shall be permitted:
100 gallons per inch diameter per mile of pipe per day. Where these
leakage rates are exceeded, the sanitary sewer will not be accepted
by the Township, and remedial measures shall be taken by the contractor
and leakage tests repeated until the sewer passes the specified leakage
allowance per forty-eight-hour period.
In connection with the existing sewer lines, the following test
shall be made: A temporary Palmer Bowlus flume with battery-powered
level recorders or an approved measuring device shall be installed
at the downstream end of the sewer line and flow measured for at least
a seven-day period, which shall include a period of observation during
a period of wet weather. The test shall not be performed between May
15 and October 15 of any calendar year. The results of the seven day
test period will be averaged to determine the average gallons per
day of flow. This value shall be compared to the actual water consumption
for the same seven-day test period. The water consumption for this
period shall be obtained from the Township of Mount Olive Water Department.
The amount of infiltration shall be determined by the following formula:
Infiltration (gallons) per inch of diameter per mile, per day
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=
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(A - B) x E/C x D
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Where
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A
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=
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Average sanitary flow test result (GPD).
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B
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=
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Average water consumption (GPD x 80%).
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C
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=
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Pipe diameter (inches).
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D
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=
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Pipe length (feet).
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E
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=
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Five thousand two hundred eighty feet per mile.
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The following maximum leakage allowance for an existing eight-inch,
ten-inch and twelve-inch collection line shall be permitted: 550 gallons
per inch of diameter, per mile, per day. Where this rate is exceeded,
the owner of said collection system or lines shall be required to
repair, reconstruct or rehabilitate said collection system within
a sixty-day period or such further extension of time as the Township
may authorize, in accordance with the directions of the Township Engineer.