Town of Schodack, NY
Rensselaer County
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Table of Contents
Table of Contents
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.
C. 
Articles II and IX, Sanitary Code of Rensselaer County.
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.
(4) 
Wastewater treatment systems shall provide, as a minimum, secondary treatment prior to discharge, as follows:
(a) 
Eighty-five percent removal of BOD and TSS.
(b) 
Nitrification NH3:N < 2 mg/l.
(c) 
Denitrification NO3:N < 10 ppm.
(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. 
Sewer pipe shall be as follows:
(1) 
PVC SDR 35: ASTM D3034.
(2) 
Ductile iron pipe, double cement lined with bituminous seal coating: AWWA C151, C111 and C104.
B. 
Manholes shall be as follows:
(1) 
Precast concrete manhole: ASTM C478.
(2) 
Mortar, Type M: ASTM C270.
(3) 
Frames and covers: NYSDOT Section 715.
C. 
Pump stations. Pump stations shall be wet-well-mounted pump stations as manufactured by Smith and Loveless or an approved equal.
D. 
Force mains shall be as follows:
(1) 
PVC SDR 21: D2241 for heads up to 90 feet.
(2) 
PVC SDR 26: ASTM D2241.
(3) 
PVC Schedule 40: ASTM D1785.
(4) 
Ductile iron pipe, double cement lined with bituminous seal coating: AWWA C151, C111 and C104.
A. 
Stakeout. Sewer systems shall be staked out prior to construction.
B. 
Pipe installation.
(1) 
Sewer pipe shall be installed to line and grade.
(2) 
Metallic warning tape shall be installed 12 inches above all pipe.
C. 
Testing.
(1) 
Pipe testing.
(a) 
Pipe shall be tested as follows:
[1] 
Deflection testing.
[2] 
Low-pressure air testing.
[3] 
Corroborative infiltration/exfiltration tests on the three sections with greatest air loss.
(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.