A. 
Ductile iron pipe and fittings.
(1) 
Ductile iron pipe shall conform to the requirements of the American Water Works Association Specification C-151 as amended and revised to date. Unless otherwise specified herein, ductile iron pipe shall be thickness Class 52 and minimum eight-inch diameter. Mechanical joints and push-on joints shall conform to the American Water Works Association Specifications C-110 and C-111, as amended and revised to date. Gasket-type joints shall be Tyton® or approved equal. Either mechanical or gasket-type joints shall be used for normal water main construction. Flanges and fittings shall conform to the requirements of the American Water Works Association C-110, as amended and revised to date, with a minimum pressure rating of 250 psi.
(2) 
All ductile iron pipe and fittings shall be cement-lined in accordance with American Water Works Association C-104, as amended and revised to date.
B. 
Valves. Valves shall conform to the current American Water Works Association Standard for Iron Body Double-Disc Gate Valves with parallel seats (C-500). Valves shall be of the type manufactured by the Kennedy Valve Company, Mueller Valve Company, or approved equal. Unless otherwise specified, valves shall be operated by a two-inch-square operation nut of cast iron and shall open in a clockwise direction. The direction of opening shall be marked on the nut by an arrow and the word "OPEN." All cast-iron surfaces of valve boxes shall be painted with three coats of asphaltum paint, inside and out. Valves shall be provided with a means of jointing suitable for use with the adjoining pipe.
C. 
Valve boxes.
(1) 
Valve boxes shall be completed with covers and both valve box and cover shall be of axle strength and dimension to fully sustain the shocks of heavy vehicular traffic and to maintain the upper section and cover at proper grade under heavy vehicular traffic.
(2) 
Covers shall be round, at least six inches in diameter and shall have the word "WATER," an arrow showing the opening direction and the word "OPEN" clearly cast thereon.
D. 
Fire hydrants. Fire hydrants shall be Type K-11 as manufactured by the Kennedy Valve Company or approved equal. Operating and cap nuts shall be one and one-half-inch pentagon. They shall be equipped with two and one-half-inch hose nozzles and one pumper nozzles, with National Standard male threads. They shall have a provision for six-inch connection to the main. Main valve opening for the hydrant shall be 5 1/2 inches. Hydrants shall open in a clockwise direction.
E. 
Concrete. Concrete for cradles and thrust blocks shall be constructed with a minimum 28 compression strength of 4,000 psi conforming to requirements as specified elsewhere herein.
Excavation and backfill shall conform to the requirements for subsurface structure excavation. The contractor shall provide adequate equipment and so operate it as to maintain an essentially dry excavation, stable trench bottoms, suitable working conditions and protection from water damage throughout and until the completion of the work.
A. 
Water mains shall be laid in straight lines except when otherwise specifically approved by the engineer. When deviation from a straight line is permitted, the deflection of each joint shall not exceed the manufacturer's recommended maximum for the type of joint and size of pipe being installed. Pipe shall be laid with at least four feet of cover as measured from the top of the pipe to the existing or proposed finished grade, or to the future finish grade when such is lower. Along extensions of roads which are unimproved, the pipe shall be laid with at least four feet of cover over the top of the pipe to the existing grade.
B. 
Special care shall be exercised to remove all earth, stone and other materials from each pipe as it is laid, and to prevent any such materials from entering the pipeline. The contractor shall see that the entire line maintained is absolutely clean on the inside and that all valves and hydrants are clean and in good working order when installed. Open ends shall be at all times adequately protected and shall be securely sealed with approved plugs whenever work is stopped for any reason whatsoever. After removing a plug, the interior of the pipeline shall be inspected and cleaned before resuming pipe-laying operations.
C. 
Before placing each length of pipe, the contractor shall carefully examine it for breaks, cracks or other defects and shall discard any which may appear to be in any way defective. All pipe and fittings shall be handled and installed with care to avoid breakage. Each section of pipe shall be solidly bedded in the trench bottom and shall be supported for its full length except where excess excavation has been made for joints. Before making each joint, the ends of the pipes and all joint members shall be thoroughly cleaned. All jointing shall be done in strict accordance with the manufacturer's recommendations and the directions of the engineer.
D. 
The contractor shall do all necessary pipe cutting and shall locate valves, fittings and fire hydrants in the exact positions indicated. He shall provide and use cutting tools of an approved type and in good order, so as to ensure clean, square cuts to exact measurements.
All fittings and valves shall be set accurately true to and square with pipelines. Valve stems shall be accurately plumb. Fittings and valves shall be supported by approved blocking so as to ensure their remaining accurately in position during jointing and in such manner that their weight will not place undue strain on connecting pipe. Joint valves boxes shall be set plumb, accurately centered with respect to the valve stem, well supported by solidly tamped earth and with their tops flush with the finished surface grade of the roadway or surface of the ground where set. Pipelines shall be rodded or thrust-blocked at all bends greater than 10° and at all tees, plugs, valves and fire hydrants so as to prevent movement of the lines under pressure. A means of backflow prevention shall be provided on all water mains for fire service or where water backflow may occur.
A. 
Excavation and backfill shall conform to the requirements of subsurface structure excavation.
B. 
The tapping hole shall extend along the main a minimum of 2 1/2 feet from both sides of the corporation and perpendicular to the main a minimum of 18 inches opposite the corporation; and a minimum of 48 inches in the direction of the corporation. The tapping hole shall provide a minimum vertical clearance of eight inches beneath the main.
C. 
Taps shall be made on a forty-five-degree angle from the top of the main and shall conform to the standard detail. For safety reasons, no taps shall be made during rainy or inclement weather.
A. 
Before new water lines are put into service, the contractor shall provide the necessary equipment for and shall perform a pressure and leakage test. This test shall be performed in the presence of the engineer. For pressure piping trench, the test shall be conducted prior to the complete backfilling of the trench, unless otherwise permitted by the engineer. For pressure piping in structures, the test shall be conducted prior to the completion of any construction which would make it impossible or difficult to gain access to the pipe if found defective. The contractor shall test sections of the pipes between valves where practicable or where ordered by the engineer.
B. 
The contractor shall make the necessary arrangements with the owner for the procurement of water for the pressure and leakage tests, and for subsequent sterilization, and shall furnish the necessary labor, pumps, valves, pressure gauges, water meters and all other equipment required for this purpose. Each section of pipe shall be slowly filled with water and the pipe shall be subjected to a hydrostatic pressure of 150 psi, and maintained for a period of one hour. Before applying the specified test pressure, all air shall be expelled from the pipe, through hydrants, blowoffs or any taps that may be necessary for the release of air, and blowoffs required for filling the line shall be furnished and installed by the contractor.
C. 
When the test pressure has been reached, the amount of makeup water to maintain the test pressure shall be measured. No pipe installed will be accepted until the amount of leakage shall not exceed 100 gallons per day per inch of diameter per mile of pipe. Where sections of pipelines fail to meet this requirement, they shall be repaired, again maintained under pressure for one hour, and retested as necessary until requirements are complied with.
D. 
Calculations to determine loss per inch of pipe per day per mile shall be done as follows:
Gallons of makeup water x 24
= gallons loss/day
gallons loss per day x 5,280 feet per mile
feet of pipe being tested
= gallons loss/mile/day
gallons loss/mile/day
(Pipe dia in inches)
= gallons/inch dia/mile/day
Allowable exfiltration rate is 100 gals/inch dia/mile/day
A. 
Before new water lines are put into service, they shall be completely sterilized with chlorine, the chlorine distributed into the new pipelines in such manner that it shall reach all of the pipe and all fittings, valves and appurtenances.
B. 
The chlorine required shall be in the form of high-test calcium hypochlorite (HTH) in tablet form. The number of tablets required per length of pipe shall be determined from the following table:
Pipe Diameter
Length of Section
(feet)
6 inches
8 inches
10 inches
12 inches
13
2
3
4
4
18
3
3
4
6
20
3
4
5
6
C. 
The required number of tablets should be fastened to the top of each length of pipe as it is laid using hot tar or Permatex No. 2 gasket cement or equal as the adhesive. Care should be taken to see that the adhesive only covers the side of each tablet so that as much surface as possible is exposed to the water when it is introduced into the main. Sterilizing dosage shall be sufficient to provide the equivalent of not less than 50 parts per million (ppm) of free chlorine to the entire contents of the pipeline or section thereof to be sterilized, and the chlorinated water shall be permitted to remain in the pipeline for a contact period of not less than 24 hours, at the end of which time the chlorine residual shall be at least 10 ppm. After sterilization, the water main or section shall be thoroughly flushed with clean water until the chlorine residual is not greater than 0.2 ppm and put into service. Any section of pipeline which is drained or empties of water at any time or for any purpose in connection with this work, whether a newly laid pipeline or part of an existing water main system, shall be sterilized as above specified before being returned to service.
D. 
Other methods of sterilization may be used; however, prior approval of the engineer in writing must be obtained prior to the test being performed.
A. 
After flushing has been completed and the chlorine residual is not greater than 0.2 ppm, a bacteriological sample shall be taken in accordance with the New Jersey Department of Environmental Protection, Potable Water Standards Bulletin PW-D 10, December 1970.
B. 
The mouth of the valve, hydrant, blowoff, etc. shall be sterilized using a propane torch or equivalent and the water then allowed to flow for a period of not less than five minutes.
C. 
The standard sample shall be collected in sterile bottles, care being taken not to contaminate the neck of the bottle or stopper during collection.
D. 
This sample will then be delivered to a certified laboratory designated by the engineer for analysis, or the sample collected by the certified lab.
E. 
Copies of the analysis shall be sent to the engineer directly from the laboratories.
F. 
In the event that the laboratory analysis shows bacteria present, the line shall be rechlorinated, flushed, sterilized and a new sample taken until such time as the New Jersey Department of Environmental Protection, Potable Water Standard PW-D 10, December 1970, are met.
G. 
Prior to any public water supply system being accepted by the engineer and the municipality, all of the requirements contained herein shall have been satisfied, and the contractor shall purge all new lines with a minimum 1,000 GPH suction pump at each hydrant for a minimum of five minutes as directed by the Township Engineer.
Existing water service shall not be interrupted unless necessary for the completion of the work and then only in accordance with the requirements of the Edgewater Park Township Water Department.