A.
Before initiating any construction of a sanitary sewer and all extensions
to a sanitary sewer, plans and specifications shall be submitted to,
and written approval shall be obtained from the Inspector, after consultation
and review with appropriate agencies. All plans, specifications and
construction documents shall be prepared and stamped by a licensed
professional engineer and/or other licensed professional allowed under
law. The design shall anticipate and allow for flows from all possible
future extensions or developments. All plans and specifications shall
include flow estimates.
B.
Any proposed sanitary sewers and all extensions to sanitary sewers
shall be subject to both the adequacy of downstream sewers to transmit
wastewater flows without interruption to the POTW and to the POTW's
capacity to accept additional wastewater flows.
C.
To the extent that an existing sewage collection system seeks to
connect to the sanitary sewer, the Inspector shall obtain and require
such information as necessary to determine the plans and specifications
for the existing sewage collection system and the potential for infiltration
and/or inflow. In addition, the Inspector may require that the sewage
discharge be metered for flow, if, in the opinion of the Inspector,
a sewage flow meter is necessary to monitor inflow, infiltration,
excessive flow and/or abnormal sewage.
A.
New sewers subject to approval, fees, inspection, testing, and reporting. When a property owner, builder, or developer proposes to construct sanitary sewers or extensions to sanitary sewers in an area proposed for subdivision, the plans, specifications, and method of installation shall be subject to the approval of the Inspector. Except where otherwise required by law, the property owner, builder, or developer shall pay for the entire installation, including, where appropriate, a proportionate share of the treatment plant, intercepting or trunk sewers, pumping stations, force mains, and all other Town expenses incidental thereto (including engineering and oversight costs). Each street lateral shall be installed and inspected pursuant to Article 5 herein, and inspection fees shall be paid by the applicant prior to initiating construction. Design and installation of sewers shall be as specified in § 403 herein, and in conformance with ASTM Specifications D-3034 and D-2321-83, unless otherwise approved by the Inspector. The installation of the sewer shall be subject to periodic inspection by the Inspector, without prior notice. The Inspector shall determine whether the work is proceeding in accordance with the approved plans and specifications, and whether the completed work will conform with the approved plans and specifications. The sewer, as constructed, in the discretion of the Inspector, must pass the infiltration test (or the exfiltration test, with prior approval), specified in Appendix A, Section 4, before any building lateral is connected thereto.[1] The Inspector shall be notified 30 days in advance of
the start of any construction actions so that such inspection frequencies
and procedures as may be necessary or required may be established.
No new sanitary sewers will be accepted by the Town Board until such
construction inspections have been made so as to assure the Town Board
of compliance with this chapter and any amendments or additions thereto.
The Inspector has the authority to require such excavation as necessary
to inspect any installed facilities if the facilities were covered
or otherwise backfilled before they were inspected so as to permit
inspection of the construction. The Inspector shall report all findings
of inspections and tests to the Town Board.
[1]
Editor's Note: Appendix A is included as an attachment to this chapter.
B.
Plans, specifications and pipe test results required. Plans, specifications,
and methods of installation shall conform to the requirements of this
article. Components and materials of wastewater facilities not covered
in this chapter, such as pumping stations, lift stations, or force
mains, shall be designed in a manner acceptable to the Inspector,
and shall be clearly shown and detailed on the plans and specifications
submitted for approval. Force main details are covered in Appendix
A, Section 11.[2] When requested, the applicant shall submit to the Inspector
all design calculations and other pertinent data to supplement review
of the plans and specifications. Results of manufacturer's tests
on each lot of pipe delivered to the job site shall also be furnished
upon request. Any and all costs incurred by the Town to review, inspect,
process and administer a new connection are chargeable to the property
owner, building and/or developer.
[2]
Editor's Note: Appendix A is included as an attachment to this chapter.
A.
Sewer pipe.
(1)
Sewer pipe material shall be:
(a)
Reinforced concrete pipe. (Note that nonreinforced concrete
pipe shall not be used.) Portland cement shall conform to ASTM C-150,
Type II. The pipe and specials shall conform to ASTM Specification
C-76. The reinforcing wire cage shall conform to ASTM Specification
A15, A82, or A185, as appropriate. Entrained air shall be 5.0% to
9.0% by ASTM C-890 water absorption and three-edge bearing tests shall
conform to ASTM Specification C-497. Gaskets shall conform to Sections
3.3 and 3.4 of AWWA Specification C-302.
(b)
Cast iron pipe, extra heavy. Pipe, fittings, and specials shall
conform to the requirements of ASTM Specification A-74 or ANSI A-21.11.
Gaskets shall conform to ASTM Specification C-564.
(c)
Polyvinyl chloride (PVC) pipe (heavy wall). Pipe shall be made
from Class 12454-B materials or better in accordance with ANSI/ASTM
Specification D-1784. Pipe and accessories shall conform to the requirements
of the following, with a minimum pipe stiffness of 46 PSI at a maximum
deflection of 5%.
(d)
Ductile iron pipe. Pipe, fittings, and specials shall be manufactured
in accordance with ASTM Specification A-746. Pipe shall have a minimum
thickness of Class 50. Fittings shall conform to ANSI Specification
A-21.11 and have a minimum pressure class rating of 150 PSI. All pipe
and fittings shall be cement mortar lined in accordance with ANSI
Specification A-21.4 at twice the specified thickness, and have an
internal and external bituminous seal coating. Closure pieces shall
be jointed by means of a mechanical coupling of the cast sleeve type.
(e)
Vitrified clay pipe, extra strength. (Note that standard strength
vitrified clay pipe shall not be used.) Pipe shall conform to the
current requirements of NCPI Specification ER 3300-67 and meet the
requirements of ASTM Specification C700.
(f)
Acrylonitrile-butadiene-styrene (ABS) pipe. Pipe and fittings
shall conform to the requirements of ASTM Specification D2661.
(g)
Other pipe materials. Other pipe materials require prior written
approval of the Inspector before being installed, subject to the review
under § 403C.
(2)
The minimum internal pipe diameter shall be eight inches for
gravity sewers and three inches for low-pressure sewers, unless otherwise
approved by the Inspector.
(3)
Joints for the selected pipe shall be designed and manufactured
such that "O" ring gaskets of the "snap-on" type are used.
(4)
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 Appendix A are met.
(5)
Joint preparation and assembly shall be in accordance with the
manufacturer's recommendations.
(6)
Wye branch fittings, as approved by the Inspector, shall be
installed, for connection of street laterals, in accordance with § 506.
(7)
The Inspector may approve different plans, subject to review
under § 403C.
B.
Safety and load factors.
(2)
Utilizing the foregoing information, design shall be made as
outlined in Chapter IX of the Water Pollution Control Federation Manual
of Practice No. 9, latest edition, "Design and Construction of Sanitary
and Storm Sewers," and the pipe shall have sufficient structural strength
to support all loads to be placed on the pipe, with a safety factor
as specified above.
(3)
PVC pipe shall not be encased in concrete due to their different
coefficients of linear thermal expansion.
C.
Sewer pipe installation. Engineering plans for all sewer and sewer
extensions shall be submitted to the Town Board for review and approval.
The plans will be reviewed by an independent professional engineer
for consistency with the 10 State Standards and good engineering judgment.
If the plans are designed and installed in compliance with the 10
State Standards (or applicable successor), the professional engineer
shall approve said plans, indicating such compliance. The cost of
the review will be charged to the applicant. The installation procedures,
design standards and test methods referenced in Appendix A hereto
are to be used unless otherwise approved by the Town Board.[1]
[1]
Editor's Note: Appendix A is included as an attachment to this chapter.
