The design, material and construction methods
shall conform to the applicable sections of the current editions and
subsequent revisions of the following documents. These documents may
be reviewed in the office of the Town Planning Board.
A.
Recommended Standards for Sewage Works, Great Lakes
Upper Mississippi River Board State Sanitary Engineers.
B.
Rural Sewage Disposal, Rensselaer County Department
of Health.
D.
Part 75-A, New York State Department of Health.
E.
Standards for Waste Treatment Works, Institutional
and Commercial Sewerage Facilities, New York State Department of Environmental
Conservation.
F.
Design and Construction of Sanitary and Storm Sewers,
Manual of Practice No. 8 Water Pollution Control Federation.
A.
Public sewer systems.
(1)
Sites within or adjacent to an existing or proposed
future sewer district as shown on the Official Map or within 1,000
feet of public sewers shall be served by public sewers.
(2)
The applicant shall pay for the cost of extending
the sewer district and facilities to connect to the existing system.
(3)
The extension of facilities can be waived in specific
instances where economic hardship and suitable alternative methods
of sewage disposal can be demonstrated.
B.
Community sewer system.
(1)
Community wastewater treatment and collection systems
shall be provided for all sites with a design wastewater flow of greater
than 20,000 gallons per day within the Schodack Terrace Aquifer and
for all sites serving 50 or more housing units.
(2)
Subsurface discharge is preferred over surface discharge.
(3)
Surface discharge may be allowed only when no alternatives
are available and the assimilative capacity of the stream is considered
under low flow (MA7Q10) conditions.
(5)
Upstream and downstream monitoring wells shall be
provided for subsurface discharge systems with testing incorporated
into the State Pollutant Discharge Elimination System permit.
(6)
All copies of laboratory test results shall be provided
to the town for nonmunicipal facilities.
C.
On-site wastewater treatment systems.
(1)
Where public sewers or community systems are not feasible,
on-site wastewater systems will be considered, provided that suitable
site conditions exist.
(2)
System designs shall be submitted to the Rensselaer
County Department of Health for approval.
(3)
The adequacy of existing systems shall be verified
prior to any expansion of site facilities or changes in use.
(4)
Dry sewers shall be required on all major subdivisions,
unless waived by the Planning Board.
(5)
Appeal.
[Added 12-8-1994 by L.L. No. 6-1994]
(a)
Any person or entity aggrieved by a determination
of the Planning Board regarding the waiver of the dry sewer requirement
under this chapter may appeal the Planning Board's decision to the
Town Board for further consideration by filing of a notice of appeal
with the Town Clerk within 30 days of the filing of the decision of
the Planning Board denying such a waiver. The Town Board shall consider
whether the applicant has suffered an undue hardship as a result of
the denial of a waiver and may exercise its discretion using all relevant
factors.
(b)
An appeal to the Town Board must be made within
the thirty-day period following the filing of Planning Board decisions
denying a waiver, except that any application for a waiver which has
been decided in the 12 months prior to the date of this subsection
may be taken by filing a notice of appeal with the Town Clerk within
the thirty-day period following the effective date of this subsection.
D.
Discharges other than domestic wastewater. Industrial
and nondomestic wastewater discharges will be allowed only after careful
review on a case-by-case basis. Pretreatment may be required prior
to connection to any public sewer systems.
E.
Gravity collection systems. Gravity sewer systems
shall be provided unless not feasible.
F.
Pump stations and force mains.
(1)
Central pump stations and force mains shall be provided
where gravity systems are not feasible.
(2)
Pump stations shall be designed in accordance with
the Recommended Standards for Sewage Works, including provisions for
emergency power.
(3)
A remote alarm system shall be provided to alert maintenance
people of system failure.
G.
Ownership, operation and maintenance.
(1)
It shall be the general policy of the town to require that all community sewer systems be owned and operated by an approved public entity such as the town or the Rensselaer County Water and Sewer Authority. The town reserves the right of first refusal on ownership and the right to acquire such systems for a nominal sum [$1]. The town may choose not to accept community sewer systems at its discretion. In any event, the applicant must make provisions to own and operate the system during the one-year waiting period for acceptance as discussed in § 188-30, Acceptance of improvements.
(2)
For all community wastewater systems, pump stations
and nonresidential systems with flows greater than 10,000 gallons
per day, complete ownership, operation and maintenance plans shall
be submitted, including;
(a)
The owners of the system and community agreement
documents.
(b)
Financial and performance guaranties.
(c)
The system operator.
(d)
Provisions for service and maintenance.
(e)
As-built drawings.
(f)
Equipment lists.
(g)
Instruction manuals.
(h)
Spare parts.
(i)
Regulatory and reporting requirements.
(j)
Emergency plans.
(k)
Operation and replacement cost estimates.
A.
Stakeout. Sewer systems shall be staked out prior
to construction.
C.
Testing.
(1)
Pipe testing.
(b)
These tests are to be performed and witnessed
prior to connection between the house services and the system. Testing
shall follow recommendations of UNI-BELL.
(c)
Infiltration testing. Infiltration testing is
considered an acceptable method of leakage test if the groundwater
level is above the top of the pipe for the entire length being tested.
A weir shall be installed in locations as directed by the Town Engineer
and will be used to measure the infiltration. The allowable infiltration
shall not exceed 50 gallons per inch of internal pipe diameter per
mile per twenty-four-hour day. The minimum length of testing shall
be one hour.
(d)
Exfiltration testing. Exfiltration testing will
be acceptable only when the groundwater level is suitably low or in
dry areas. Plugs, caps and branch connections must be secured against
blowoff during leakage tests. The maximum allowable exfiltration for
any section of pipe between manholes shall be measured and shall not
exceed 50 gallons per inch of internal pipe diameter per mile per
twenty-four-hour day. The owner shall provide water and measuring
devices. During testing, the maximum internal pipe pressure at the
lowest end shall not exceed 25 feet, and the internal head shall be
two feet higher than the top of the pipe.
(e)
Low-pressure air testing. All plugs, fittings,
gauges and pumping systems required shall be provided by the owner.
The pressure drop shall not exceed 0.5 pound per square inch from
3.5 pounds per square inch to 3.0 pounds per square inch in excess
of the groundwater pressure above the top of the pipe.
(f)
The duration of the testing shall be taken from
Table 5-403.1 in accordance with UNI-BELL recommended practice as
follows.[1]
[1]
Editor's Note: Table 5-403.1 is included at the end of this chapter.
(g)
Deflection testing. Sewer lines shall be tested
for straightness with a maximum allowable deflection of 7 1/2%.
Sections found to be questionable shall be tested by pulling an appropriately
sized mandrel through the pipe.
(h)
The owner shall furnish the correct mandrels
for the pipe size being tested, as determined from Table 5-4.03.2.
The owner shall be responsible for furnishing all necessary rope,
labor, fittings, etc., in order to conduct the testing.
|
Table 5-4.03.2
| |
|---|---|
|
Specified Mandrel Size for Pipe Diameter
Indicated
| |
|
Pipe Diameter
(inches)
|
Mandrel O.D.
(inches)
|
|
6
|
5.31
|
|
8
|
7.09
|
|
10
|
8.85
|
|
12
|
10.51
|
|
15
|
12.86
|
|
18
|
15.70
|
|
21
|
18.50
|
|
24
|
20.80
|
|
27
|
23.43
|
(i)
Acceptance. Any section of the sewer system
that does not comply with the requirements of the testing outlined
above shall be repaired or replaced at the owner's expense, to meet
the requirements of the town.
(2)
All mechanical systems shall be tested to ensure proper
operation within the design parameters prior to placing in service.
