All extensions to the sanitary sewer system owned and maintained
by the Town 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 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
to the property line, may be constructed by the Town under public
contract if, in the opinion of the Town 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 from
the property line to his residence or place of business. Thereafter,
each property owner served by the extended public sewers will be charged
at the full service charge rate. Property owners may, in accordance
with applicable law, propose sewer extensions within the Stockport
Sewer District or other parts of the Town by drafting a written petition,
signed by a majority of the benefiting property owners, and filing
it with the Town Board.
If the Town does not elect to construct a sewer extension under
public contract, the property owner, builder or developer may construct
the necessary sewer extension if the extension is approved by the
Town Board in accordance with the requirements of the regulations
set forth herein. Such owner, builder or developer shall pay for the
entire installation, including all expenses incidental thereto. Each
building sewer must be installed and inspected as required by this
chapter, and the inspection fees shall be paid for by the owner, builder
or developer. The installation of the sewer extension must be subject
to full-time inspection by the Town Engineer, and the expenses for
this inspection shall be paid for by the owner, builder or developer.
The Town Engineer's decision shall be final in matters of quality
and methods of construction. The sewer, as constructed, must pass
the exfiltration test before it is to be used. The cost of the sewer
extension thus made shall be absorbed by the owner, builder or developer,
and thereafter all subsequent property owners shall be subject to
a sewer service charge proportional to their use of trunk sewers and
treatment plant and their proportion of operational and maintenance
costs.
All sewer extensions constructed at the property owner's,
builder's or developer's expense, after final approval and
acceptance by the Town Engineer, shall become the property of the
Town and shall thereafter be maintained by the Town. Said sewer extensions,
after their acceptance by the Town, shall be guaranteed for one year.
The guaranty shall be in a form provided for by the Town. At the sole
discretion of the Town, a completion bond or certified check may be
demanded as part of the guaranty.
Pipe of PVC will be allowed under the following conditions,
specifications and installation details:
A. The maximum size of PVC pipe is limited to 12 inches in diameter
and a depth of cover not to exceed 12 feet. All pipe over this diameter
and/or depth shall be Class 50, cement-lined ductile iron. Residential
services shall be a minimum of six inches in diameter.
B. Proper and controlled bedding and compaction as hereinafter specified
shall be required.
C. In addition to the normal low pressure, air testing for acceptance
of new sanitary sewers and services, a deflection test of all main
line PVC sewers will be required no sooner than 60 days after sewer
installation and backfill. Deflection testing shall be accomplished
by means of passing a sled or mandrel 1/16 inch smaller in diameter
than the allowable inside diameter of the flexible pipe when deflected
a maximum of 5% of the outside diameter of the pipe being tested.
D. The minimum depth of cover under pavement or in areas with a superimposed
load without concrete encasement or other form of protection and bedding
will be four feet.
The homeowner will be allowed to install ABS SDR-23.5 with solvent
weld joints under the following conditions:
A. The service line will be below four feet in depth, or the length
of the line will not exceed 60 feet without the use of an approved
expansion joint.
Manholes shall be constructed at all changes in slope alignment
or at intervals not exceeding 400 linear feet. The manholes shall
be constructed with a poured three-thousand-pound-per-square-inch
concrete base, steel-troweled concrete or mortar inverts and precast
four-foot-diameter concrete manhole barrel sections and a tapered
top section. The manhole frame and cover shall be the standard design
of the Town and shall be set with no less than two courses of brick
underneath to allow for later adjustment in elevation. "Town of Stockport"
should be added on the lid.
A press-wedge seal or equal shall be used to connect PVC pipe
to manholes, as shown on the Manhole Connection Detail.
Three approved manufacturers of PVC, SDR-35, are Certain-Teed,
Johns Manville and Clow Corporation.
The size and grade of house laterals and other applicable installation
requirements and details shall conform to the Town of Stockport Sanitary
Sewer Informational Pamphlet for Residential Connections, dated November
1989.