All extensions to the sanitary sewer system owned and maintained
by the village shall be properly designed in accordance with the recommended
standards for sewage works, as adopted by the Great Lakes-Upper Mississippi
River Board of State Sanitary Engineers and in strict conformance
with all requirements of the New York State Department of Health.
Plans and specifications for sewer extensions shall be submitted to
and approval obtained from the Engineer and the New York State Department
of Health before construction may proceed. The design of sewers must
anticipate and allow for flows from all possible future extensions
or developments within the immediate drainage area.
Sewer extensions, including individual building sewer laterals from the public sewer to the property line, may be constructed by the Village under public contract if, in the opinion of the Village Board, the number of properties to be served by such extension warrants its cost. Under this arrangement, the property owner shall pay for and install the building sewer lateral from the property line to his residence or place of business in accordance with the requirement of Article IV. Property owners may propose sewer extensions within the incorporated Village by drafting a written petition, signed by a majority of the benefiting property owners, and filing it with the Village Board. The cost of such extensions may be assessed to the benefited property owners in any manner determined by the Village Board.
If the Village does not elect to construct a sewer extension under public contract, the property owner, builder or developer may construct the necessary sewer extension if such extension is approved by the Village Board in accordance with the requirements of § 89-23. He or they must pay for the entire installation, including all expenses incidental thereto. Each building sewer installed must be installed and inspected as previously required, and inspection fees as determined by the Village Board shall be paid. Design of sewers shall be as specified in § 89-26. The installation of the sewer extension must be subject to periodic inspection by the Engineer, and the expenses for this inspection shall be paid for by the owner, builder or developer. The Engineer's decisions shall be paid for by the owner, builder or developer. The Engineer's decisions shall be final in matters of quality and methods of construction. The sewer, as constructed, must pass the exfiltration test required in § 89-27 before it is to be used. The cost of sewer extensions thus made shall be absorbed by the developers or the property owners, including all building sewers.
Sewer design shall be in accordance with the following provisions:
A.
Pipe material shall be either asbestos cement conforming to ASTM
Specification C-428, Type II; extra-strength vitrified clay conforming
to ASTM Specification C-200; or reinforced concrete conforming to
ASTM Specifications C-76. No standard-strength clay pipe or nonreinforced
concrete pipe shall be used. Minimum internal pipe diameter shall
be eight inches. Joints for each kind of pipe shall be designed and
manufactured such that O-ring gaskets of the snap-on type are employed.
B.
Gaskets shall be continuous, solid, natural or synthetic rubber and shall provide a positive compression seal in the assembled joint such that the requirements of § 89-27 are met. Joint preparation and assembly shall be in accordance with the manufacturer's recommendations. Y-branch fittings shall be installed for connection to building sewers in accordance with § 89-11. Trench widths as measured just above the crown of the pipe shall not exceed the following:
|
Pipe Diameter
(inches)
|
Trench Width
|
|---|---|
|
8
|
3 feet 3 inches
|
|
10
|
3 feet 6 inches
|
|
12
|
3 feet 9 inches
|
|
14
|
4 feet 0 inches
|
C.
If the trench widths are found, during field inspection, to exceed
the limits in the above table, the sewer pipe shall be encased with
a minimum of six inches of concrete, or a higher-strength class pipe
shall be used. Pipe shall be firmly and evenly bedded on a minimum
of three inches of No. 1A or No. 1 crushed stone (NYSDOT specification).
Pipe thickness and field strength shall be calculated on the following
criteria:
D.
Utilizing the above information, design shall then be made as outlined
in Chapter IX of the Water Pollution Control Federation[1] Manual of Practice No. 9, Design and Construction of Sanitary
and Storm Sewers.
[1]
Editor's Note: The Water Pollution Control Federation has
changed its name to the Water Environment Federation.
E.
Manholes shall be constructed at all changes in slope or alignment
or at intervals not exceeding 400 linear feet. The manholes shall
be constructed with a poured 3,000-pounds-per-square-inch concrete
base 12 inches thick, steel-troweled concrete or mortar bench walls
and inverts and precast four-foot-diameter concrete manhole barrel
sections with concentric tapered top section, as specified by ASTM
C-478. The manhole frame and cover shall be the standard design of
the Village and shall be set with no less than two courses of brick
underneath to allow for later adjustment in elevation. All joints
shall be sealed against infiltration. No manholes shall be constructed
with steps or ladder rungs. Minimum clear openings in all manholes
shall be 24 inches.
A.
All sewers shall satisfy requirements of a final exfiltration test
before they will be approved and sewage flow accepted from them by
the Village. This test consists of filling the pipe with water to
provide a head of at least five feet above the top of the pipe or
five feet above groundwater, whichever is higher, at the highest point
of the pipeline under test and then measuring the loss of water from
the line by the amount which must be added to maintain the original
level. In this test, the line must remain filled with water for at
least 24 hours prior to the taking of measurements. Exfiltration shall
be measured by the drop of water level in a standpipe with closed
bottom end or in one of the sewer manholes available for convenient
measuring.
B.
When a standpipe and plug arrangement is used in the upper manhole
of a line under test, there must be some positive method of releasing
entrapped air in the sewer prior to taking measurements. The test
length intervals for either type of test shall be as ordered or approved,
but in no event shall they exceed 1,000 feet. In the case of sewers
laid on steep grades, the length of line to be tested by exfiltration
at any one time may be limited by the maximum allowable internal pressure
on the pipe and joints at the lower end of the line. The test period
wherein the measurements are taken shall not be less than two hours
in either type of test.
C.
The total leakage of any section tested shall not exceed the rate
of 100 gallons per mile of pipe per 24 hours per inch of nominal pipe
diameter. For purposes of determining the maximum allowable leakage,
manholes shall be considered as sections of forty-eight-inch-diameter
pipe, five feet long. The equivalent leakage allowance shall be 4.5
gallons per manhole per 24 hours for forty-eight-inch-diameter manholes.
If leakage exceeds the specified amount, the necessary repairs or
replacements required shall be made to permanently reduce the leakage
to within the specified limit, and the tests shall be repeated until
the leakage requirement is met.
All sewer extensions constructed at the property owner's, builder's
or developer's expense, after final approval and acceptance by the
Engineer, shall become the property of the Village and shall thereafter
be maintained by the Village. Said sewers, and their acceptance by
the Village, shall be guaranteed against defects in materials or workmanship
for 18 months. The guaranty shall be in a form provided for by the
Village. At the sole discretion of the Village, a completion bond
or certified check may be demanded as part of the guaranty.
No builder or developer shall be issued a building permit for
a new dwelling or structure requiring sanitary facilities within the
Village unless a suitable and approved method of waste disposal is
proposed. All new developments shall be provided with an approved
system of sanitary sewers unless otherwise permitted by the Village
Board and New York State Department of Health or its authorized representative.
