New sanitary sewers and all extensions to sanitary sewers owned and maintained by the Village Utilities Commission 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 Environmental Conservation. Plans and specifications shall be submitted to and approval obtained from the Engineer and New York State Department of Environmental Conservation before construction may proceed. The design of sewers shall anticipate and allow for flows from all possible future extensions or developments within the immediate drainage area, being compatible with the Master Sewerage Plan adopted by the Village.
A. 
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 Engineer in accordance with § 129-23. Said property owner, builder or developer shall pay for the entire installation, including a proportionate share of the cost of a treatment plant, intercepting or trunk sewers, pumping stations, force mains and all other Village expenses incidental thereto. Each building sewer must be installed and inspected pursuant to Article III, and all permit and inspection fees shall be paid by the applicant. Design and installation of sewers shall be as specified in and in conformance with Paragraphs 3 through 6 of ASTM Specification C-12. The installation of the sewer shall be subject to periodic inspection by the Engineer, and the expense for this inspection shall be paid for by the owner, builder or developer as provided in this chapter. 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 § 129-26 before any building sewer is connected thereto. Plans, specifications and other required information shall be submitted 45 days in advance of anticipated project start date. The Engineer shall be notified at least 30 days in advance of the start of construction operations so that such inspection procedures as may be necessary or required may be established. No sanitary sewers will be accepted by the Village until such inspection of construction has been made as will assure the Village of compliance with these regulations and any amendments or additions thereto.
B. 
Plans, specifications and methods of installation shall conform to the requirements of this chapter. Components and materials of sewage works installations not covered in this chapter, such as pumping stations, lift stations or force mains, shall be designed in accordance with § 129-23 and shall be clearly shown and detailed on the plans and specifications submitted for approval. When requested, the owner, builder or developer of the proposed installation shall submit to the Engineer all design calculations and other pertinent data to supplement the Engineer's review of the plans and specifications and furnish results of manufacturer's tests on each lot of pipe delivered to the job.
A. 
Sewer design shall be in accordance with the following provisions:
(1) 
Pipe material shall be either extra-strength vitrified clay conforming to ASTM Specification C-200 (minimum Class 2400); or polyvinyl chloride (PVC) conforming to ASTM Specification D3034-80, Type PSM, with minimum SDR ratio of 35 and minimum pipe stiffness at 5% deflection of 46. No standard strength clay pipe or concrete pipe shall be used. Pipe manufactured using other materials may be installed only if prior approval is obtained from the Engineer. 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. 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 § 129-26 are met. Joint preparation and assembly shall be in accordance with the manufacturer's recommendations. Wye branch fittings shall be installed for connection of a building sewer in accordance with § 129-12A. 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
15
4 feet 1 inch
16
4 feet 2 inches
(2) 
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 for that length of trench which width exceeds the maximum.
B. 
Pipe class.
(1) 
Selection of pipe class shall be calculated based on the following criteria:
(a) 
Safety factor: 1.5 (minimum).
(b) 
Load factor: 1.7 (maximum).
(c) 
Weight of soil: 120 pounds per cubic foot.
(d) 
Wheel loading: 16,000 pounds.
(2) 
Utilizing the foregoing information, design shall then be made as outlined in Chapter IX of the Water Pollution Control Federation Manual of Practice No. 9, Design and Construction of Sanitary and Storm Sewers, and pipe shall have sufficient structural strength to support all loads to be placed on the pipe, with a minimum 50% safety factor as listed above.
C. 
Pipe shall be firmly and uniformly bedded in a minimum depth of three inches of No. 1 or No. 1A crushed stone (New York State Department of Transportation specification); the trench shall be excavated approximately three inches deeper than the bottom of the pipe prior to installation of the bedding material. All pipe shall be supported by a firm foundation. When unsuitable foundation conditions are encountered, in the judgment of the Engineer, an artificial pipe foundation shall be created utilizing concrete cradle under and around the bottom half of the pipe or such other foundation design subject to Engineer's approval. The trench shall be excavated below the bedding line to the prescribed depth for subsequent installation of the required foundation, all as directed by the Engineer.
D. 
Manholes.
(1) 
Manholes shall be constructed at all changes in slope and alignment and at intervals not exceeding 300 linear feet.
(2) 
Manhole bases shall be constructed of poured 3,000 pounds per square inch concrete 12 inches thick or equivalent precast concrete bases, if approved by the Engineer, prior to installation.
(3) 
Bench walls and flow channels shall be carefully sloped for smooth flow and have a steel trowel finish.
(4) 
Manhole walls shall be constructed using precast four-foot diameter concrete manhole barrel sections and a concentric tapered top section conforming to ASTM Specification C-478. Barrel sections and top sections shall be cast solid, without lifting holes. All joints between manhole section shall be O-ring rubber gasket, meeting the same specifications as pipe joints, and shall be sealed against infiltration. No steps or ladder rungs shall be installed in the manhole walls. All precast sections shall be produced at a plant which is approved by the New York State Department of Transportation for manufacture of concrete pipe.
(5) 
The manhole frame and cover shall be heavy-duty cast iron as manufactured by Neenah Foundry Company or approved equal. Twenty-four-inch frames and covers shall be Neenah Catalog No. 1642 with Type C cover or shall be the standard adopted by the Village.
(6) 
Manhole frames and covers shall have a minimum combined weight of 400 pounds, shall have a minimum height of seven inches, and a clear opening of 24 inches.
(7) 
Covers shall be marked "Sewer" and have two nonpenetrating pickholes at least one inch in width and 1 1/2 inches long.
(8) 
Frames and covers shall have machined bearing surfaces and shall be painted with bitumastic.
(9) 
Manhole frames shall be set in a full bed of mortar with no less than two nor more than nine courses of brick or an appropriate number of precast concrete rings underneath to allow for later adjustment in elevation. Manhole frames shall be set so that the top conforms to the adjacent road grade.
[Amended 2-12-1991 by L.L. No. 1-1991]
A. 
All gravity sanitary sewers, extensions to sanitary sewers, manholes, service connections or sewer laterals shall be tested for leakage and shall satisfy requirements of a final exfiltration (or leakage) test before they shall be approved and wastewater flow permitted by the Commission. The labor, testing materials and equipment for the exfiltration test required herein shall be provided and performed by the property owner, builder or developer under the supervision of the Engineer or his designated representative, who shall have the responsibility for making the proper and accurate measurements required.
B. 
This test consists of filling the pipe with water to a line or mark to provide a head of at least five feet above the top of the sewer pipe or five feet above groundwater, whichever is higher, at the highest point of the pipeline under test, and then determining the loss of water from the pipeline by measuring the amount which must be added to regain the original water level in the standpipe. In this test the line must remain filled with water for at least 24 hours prior to taking the initial measurement of water level. The test period for taking measurements shall not be less than two hours. 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. This is roughly equivalent to approximately 2.424 ounces per linear foot of pipe per inch pipe diameter per day or 0.202 ounces (six milliliters) per linear foot of pipe per inch pipe diameter per two-hour period.
C. 
Exfiltration shall be measured by the drop of the water level in a standpipe with the lower ends of the sewer pipeline closed, or in one of the sewer manholes for convenient measuring. When the level of the groundwater table is of such height that the manholes cannot be used for convenient measuring or if the vertical distance between the top of the pipe and the manhole rim is less than five feet, the pipeline shall be tested separately from the manholes utilizing the standpipe method, including plugs, hoses, etc., to establish the required head of water. Manholes shall then be examined for visible leakage due to infiltration of groundwater, and such leaks shall be plugged to the Engineer's satisfaction.
D. 
Should the test results be unsatisfactory, the owner, builder or developer shall make all necessary repairs or replacements and shall repeat the final leakage test(s) until the minimum leakage requirements are met. For purposes of determining the maximum allowable leakage, manholes are considered as sections of forty-eight-inch or sixty-inch diameter pipe, depending upon the type of manhole included in the test. The equivalent leakage allowance shall be 4.5 gallons per manhole per 24 hours for forty-eight-inch diameter manholes, and shall be 5.7 gallons per manhole per 24 hours for sixty-inch diameter manholes.
All sanitary sewers and extensions to sanitary sewers 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 Commission. Said sewers, after their acceptance by the Village, shall be guaranteed against defects in materials or workmanship for one year by the builder or developer. The guaranty shall be in such form and contain such provisions as required by the Village, secured by a surety bond or such other security as the Village may approve.
No property owner, builder or developer shall be issued a building permit for a new dwelling or structure requiring sanitary facilities unless a suitable and approved method of disposal of wastewater is proposed and approved by the Village. All new housing or building developments shall be provided with an approved system of sanitary sewers.
Any person constructing or causing to be constructed sewerage works (or any part thereof) or private wastewater disposal facilities must present to the Clerk a certificate of insurance showing suitable liability insurance before a permit will be issued for construction of the same, said certificate to be written for the benefit of the Village and to hold the Village harmless for any damages and claims which may arise as a result of construction of said facilities.