Attachment - 331000.pdf

610-21-104 IMPROVE SEWER SYSTEM AND WATER LOOP 03-01-17

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SECTION 33 10 00

WATER UTILITIES

PART 1 - GENERAL

1.1 DESCRIPTION

A. This section specifies materials and procedures for construction of underground water distribution for domestic and/or fire supply systems outside the building that are complete and ready for operation. This includes piping, structures, appurtenances and all other incidentals.

1.2 RELATED WORK

A. Excavation, Trench Widths, Pipe Bedding, Backfill, Shoring, Sheeting, Bracing: Section 31 20 00, EARTH MOVING.

B. Concrete: Section 03 30 00, CAST IN-PLACE CONCRETE.

C. Fire Protection System connection: Section 21 12 00, FIRE-SUPPRESSION

STANDPIPES.

D. General plumbing: Section 22 05 11, COMMON WORK RESULTS FOR PLUMBING.

E. Submittals: Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA AND SAMPLES.

F. Metering: Section 25 10 10, ADVANCED UTILITY METERING SYSTEM.

G. Erosion and Sediment Control: Section 01 57 19, TEMPORARY ENVIRONMENTAL

CONTROLS.

1.3 DEFINITIONS

A. Water distribution system: Pipelines and appurtenances which are part of the distribution system outside the building for potable water and fire supply.

B. Water service line: Pipeline from main line to 5 feet outside of building.

1.4 ABBREVIATIONS

A. PVC: Polyvinyl chloride plastic.

B. DI: Ductile iron pipe.

C. WOG: Water, Oil and Gas.

1.5 DELIVERY, STORAGE AND HANDLING

A. Ensure that valves are dry and internally protected against rust and corrosion. Protect valves against damage to threaded ends and flange faces.

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B. Use a sling to handle valves and fire hydrants if size requires handling by crane or lift. Rig valves to avoid damage to exposed parts. Do not use handwheels or stems as lifting or rigging points.

C. Deliver piping with factory-applied end caps. Maintain end caps through shipping, storage, and handling to prevent pipe-end damage and to prevent entrance of dirt, debris, and moisture.

D. Protect stored piping from moisture and dirt by elevating above grade.

Protect flanges, fittings, and specialties from moisture and dirt.

E. Store plastic piping protected from direct sunlight and support to prevent sagging and bending.

F. Cleanliness of Piping and Equipment Systems:

1. Care shall be exercised in the storage and handling of equipment and piping material to be incorporated in the work. Debris arising from cutting, threading and welding of piping shall be removed.

2. Piping systems shall be flushed, blown or pigged as necessary to deliver clean systems.

1.6 COORDINATION

A. Coordinate connection to water main with Public Utility company.

B. Coordinate water service lines with building contractor.

1.7 QUALITY ASSURANCE:

A. Products Criteria:

1. When two or more units of the same type or class of materials or equipment are required, these units shall be products of one manufacturer.

2. A nameplate bearing manufacturer's name or trademark, including model number, shall be securely affixed in a conspicuous place on equipment. In addition, the model number shall be either cast integrally with equipment, stamped, or otherwise permanently marked on each item of equipment.

B. Materials and equipment shall be the standard products of a manufacturer regularly engaged in the manufacture of the products for at least three years. Digital electronic devices, software and systems such as controls, instruments or computer work stations shall be the current generation of technology and basic design that has a proven satisfactory service record of at least three years.

C. Regulatory requirements:

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1. Comply with the rules and regulations of the public utility company having jurisdiction over the connection to public water lines and the extension and/or modifications to public utility systems.

2. Comply with the rules and regulations of the State and Local Health

Department having jurisdiction for potable water-service.

3. Comply with rules and regulations of State and Local authorities having jurisdiction for fire-suppression water-service piping including materials, hose threads, installation and testing.

D. Provide certification of factory hydrostatic testing of not less than

500 psi (3.5 MPa) in accordance with AWWA C151. Piping materials shall bear the label, stamp or other markings of the specified testing agency.

E. Before any welding is performed, contractor shall submit a certificate certifying that welders comply with the following requirements:

1. Qualify welding processes and operators for piping according to ASME

"Boiler and Pressure Vessel Code", Section IX, "Welding and Brazing

Qualifications".

2. Comply with provisions of ASME B31 series "Code for Pressure Piping".

3. Certify that each welder has passed American Welding Society (AWS) qualification tests for the welding processes involved, and that certification is current.

4. All welds shall be stamped according to the provisions of the

American Welding Society.

F. Where installation procedures or any part thereof are required to be in accordance with the recommendations of the manufacturer of the material being installed, printed copies of these recommendations shall be furnished to the Resident Engineer prior to installation.

G. Applicable codes:

1. Plumbing Systems: IPC, International Plumbing Code.

2. Electrical components, devices and accessories shall be listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdiction and marked for intended use.

3. Fire-service main products shall be listed in the FM Global “Approval

Guide” or Underwriters Laboratories (UL) “Fire Protection Equipment

Directory”.

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1.8 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only.

B. American National Standards Institute (ANSI):

MSS SP-60-2004 .........Connecting Flange Joint Between Tapping Sleeves and Tapping Valves

MSS SP-108-2002.........Resilient-Seated Cast Iron, Eccentric Plug

Valves

MSS SP-123-1998(R2006)..Non-Ferrous Threaded and Solder-Joint Unions for Use With Copper Water Tube

C. American Society of Mechanical Engineers (ASME):

A112.1.2-2004...........Air Gaps in Plumbing Systems (for Plumbing

Fixtures and Water-Connected Receptors))

A112.6.3-2001...........Floor Drains

B16.1-2010..............Gray Iron Pipe Flanges and Flanged Fittings, Class 25, 125, 250

B16.18-2001.............Cast Copper Alloy Solder Joint Pressure

Fittings

B16.22-2001.............Wrought Copper and Copper Alloy Solder Joint

Pressure Fittings

B16.24-2006.............Cast Copper Alloy Pipe Flanges and Flanged

Fittings; Classes 150, 300, 600, 900, 1500 and

B31.....................Code for Pressure Piping Standards

D. American Society for Testing and Materials (ASTM):

A36/A36M-08.............Carbon Structural Steel

A48/A48M-08(2008).......Gray Iron Castings

A536-84(2009)...........Ductile Iron Castings

A674-10.................Polyethylene Encasement for Ductile Iron Pipe for Water or Other Liquids

B61-08..................Steam or Valve Bronze Castings

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B62-09..................Composition Bronze or Ounce Metal Castings

B88/B88M-09.............Seamless Copper Water Tube

C651-05.................Disinfecting Water Mains

C858-10e1...............Underground Precast Utility Structures

D1785-06................Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120

D2239-03................Polyethylene (PE) Plastic Pipe (SIDR-PR) Based on Controlled Inside Diameter

D2464-06................Threaded Poly (Vinyl Chloride) PVC Pipe

Fittings, Schedule 80

D2466-06................Poly (Vinyl Chloride) (PVC) Pipe Fittings, Schedule 40

D2467-06................Poly (Vinyl Chloride) (PVC) Plastic Pipe

Fittings, Schedule 80

D2609-02(2008)..........Plastic Insert Fittings for Polyethylene (PE)

Plastic Pipe

D3350-10a...............Polyethylene Plastics Pipe and Fittings

Materials

F714-10.................Polyethylene (PE) Plastic Pipe (SDR-PR) Based on Outside Diameter

F1267-07................Metal, Expanded, Steel

E. American Water Works Association (AWWA):

B300-10.................Hypochlorites

B301-10.................Liquid Chlorine

C104-08.................Cement–Mortar Lining for Ductile Iron Pipe and

Fittings

C105/A21.5-10...........Polyethylene Encasement for Ductile Iron Pipe

Systems

C110-08.................Ductile Iron and Gray-Iron Fittings

C111/A21.11-07..........Rubber-Gasket Joints for Ductile Iron Pressure

Pipe and Fittings

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C115/A21.11-11..........Flanged Ductile Iron Pipe with Ductile Iron or

Gray-Iron Threaded Flanges

C151/A21.51-09..........Ductile Iron Pipe, Centrifugally Cast

C153/A21.53-11..........Ductile Iron Compact Fittings for Water Service

C502-05.................Dry-Barrel Fire Hydrants

C503-05.................Wet-Barrel Fire Hydrants

C504-10.................Rubber-Seated Butterfly Valves

C508-09.................Swing-Check Valves for Waterworks Service, 2-

In. Through 24-In. (50-mm Through 600-mm) NPS

C509-09.................Resilient-Seated Gate Valves for Water Supply

Service

C510-07.................Double Check Valve Backflow Prevention Assembly

C511-07.................Reduced-Pressure Principle Backflow Prevention

Assembly

C512-07.................Air Release, Air/Vacuum and Combination Air

Valves

C550-05.................Protective Interior Coatings for Valves and

Hydrants

C600-10.................Installation of Ductile Iron Mains and Their

Appurtenances

C605-11.................Underground Installation of Polyvinyl Chloride

(PVC) Pressure Pipe and Fittings for Water

C606-11.................Grooved and Shouldered Joints

C651-05.................Disinfecting Water Mains

C700-09.................Cold-Water Meters, “Displacement Type,” Bronze

Main Case

C800-05.................Underground Service Line Valves and Fittings

C900-09.................Polyvinyl Chloride (PVC) Pressure Pipe and

Fabricated Fittings, 4 In. Through 12 In. (100 mm Through 300 mm), for Water Transmission and

Distribution

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C906-07.................Polyethylene (PE) Pressure Pipe and Fittings, 4

In. (100 mm) Through 64 In. (1,600 mm), for

Water Distribution and Transmission

C907-04.................Injection-Molded PVC Pressure Fittings, 4 Inch through 12 Inch (100 mm through 300 mm), for

Water Distribution

M23-2nd Ed..............PVC Pipe, Design and Installation

M44-2nd Ed..............Distribution Valves: Selection, Installation, Field Testing and Maintenance

F. National Fire Protection Association (NFPA):

NFPA 24-2010 Ed.........Installation of Private Fire Service Mains and

Their Appurtenances

NFPA 1963-2009 Ed.......Fire Hose Connections

G. NSF International (NSF):

NSF/ANSI 14 (2013)......Plastics Piping System Components and Related

Materials

NSF/ANSI 61-2012........Drinking Water System Components - Health

Effects

NSF/ANSI 372-2011.......Drinking Water System Components – Lead Content

H. American Welding Society (AWS):

A5.8/A5.8M-2004 ........Filler Metals for Brazing and Braze Welding

I. American Society of Safety Engineers (ASSE):

1003-2009 ..............Water Pressure Reducing Valves

1015-2009...............Double Check Backflow Prevention Assemblies and

Double Check Fire Protection Backflow

Prevention Assemblies

1020-2004...............Pressure Vacuum Breaker Assembly

1047-2009...............Performance Requirements for Reduced Pressure

Detector Fire Protection Backflow Prevention

Assemblies

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1048-2009...............Performance Requirements for Double Check

Detector Fire Protection Backflow Prevention

Assemblies

1060-2006...............Performance Requirements for Outdoor Enclosures for Fluid Conveying Components

J. Underwriters' Laboratories (UL):

246.....................Hydrants for Fire-Protection Service

262.....................Gate Valves for Fire-Protection Service

312.....................Check Valves for Fire-Protection Service

405.....................Fire Department Connection Devices

753.....................Alarm Accessories for Automatic Water-Supply

Control Valves for Fire Protection Service

789.....................Indicator Posts for Fire-Protection Service

1091....................Butterfly Valves for Fire-Protection Service

1285....................Pipe and Couplings, Polyvinyl Chloride (PVC), and Oriented Polyvinyl Chloride (PVCO) for

Underground Fire Service

1.9 WARRANTY

A. The Contractor shall remedy any defect due to faulty material or workmanship and pay for any damage to other work resulting therefrom within a period of two years from final acceptance. Further, the

Contractor will furnish all manufacturers’ and supplier's written guarantees and warranties covering materials and equipment furnished under this Contract.

PART 2 - PRODUCTS

2.1 MATERIALS

A. Material or equipment containing a weighted average of greater than

0.25 percent lead shall not be used in any potable water system intended for human consumption, and shall be certified in accordance with

NSF/ANSI 61 or NSF 372.

B. Plastic pipe, fittings, and solvent cement shall meet NSF/ANSI 14 and shall be NSF listed for the service intended.

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2.2 FACTORY-ASSEMBLED PRODUCTS

A. Standardization of components shall be maximized to reduce spare part requirements. The contractor shall guarantee performance of assemblies of components, and shall repair or replace elements of the assemblies as required to deliver specified performance of the complete assembly.

2.3 SAFETY GUARDS

A. All equipment shall have moving parts protected to prevent personal injury. Pump shafts and couplings shall be fully guarded by a sheet steel guard, covering coupling and shaft but not bearings. Material shall be minimum 16-gauge sheet steel; ends shall be braked and drilled and attached to pump base with minimum of four 1/4 inch (6 mm) bolts.

Reinforce guard as necessary to prevent side play forcing guard onto couplings.

2.4 LIFTING ATTACHMENTS

A. Equipment shall be provided with suitable lifting attachments to enable equipment to be lifted in its normal position. Lifting attachments shall withstand any handling conditions that might be encountered, without bending or distortion of shape, such as rapid lowering and braking of load.

2.5 DUCTILE IRON PIPE AND FITTINGS

A. Mechanical-Joint, Ductile-Iron Pipe: AWWA C151, with mechanical-joint bell and plain spigot end unless grooved or flanged ends are indicated, 350 psi (2400 kPa).

1. Mechanical-Joint, Ductile-Iron Fittings: AWWA C110, ductile- or gray-iron standard pattern or AWWA C153, ductile-iron compact pattern.

2. Glands, Gaskets, and Bolts: AWWA C111, ductile- or gray-iron glands, rubber gaskets, and steel bolts.

B. Push-on-Joint, Ductile-Iron Pipe: AWWA C151, with push-on-joint bell and plain spigot end unless grooved or flanged ends are indicated, 350 psi

(2400 kPa).

1. Push-on-Joint, Ductile-Iron Fittings: AWWA C110, ductile- or gray-iron standard pattern or AWWA C153, ductile-iron compact pattern.

2. Gaskets: AWWA C111, rubber.

C. Grooved-Joint, Ductile-Iron Pipe: AWWA C151, with cut, round-grooved ends.

1. Grooved-End, Ductile-Iron Pipe Appurtenances: ASTM A47, malleable-iron castings or ASTM A536, ductile-iron castings with dimensions matching pipe, 350 psi (3400 kPa).

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2. Grooved-End, Ductile-Iron-Piping Couplings: AWWA C606, for ductile-iron-pipe dimensions, Include ferrous housing sections, gasket suitable for water, and bolts and nuts.

3. Gaskets: AWWA C111.

D. Flanged Ductile Iron Pipe: AWWA C115/A21.11, with factory applied screwed long hub flanges.

1. Flanges: ASME B16.1 for 125 psi (850 kPa) or 250 psi (1725 kPa) pressure ratings, as necessary.

2. Wall Sleeve Castings, size and types shown on the drawings, shall be hot dipped galvanized per ASTM A123.

3. Pipe and fittings exposed to view in the finished work are to be painted in accordance with Section 09 91 00, PAINTING. Pipe shall be shop primed with one coat of rust inhibitive primer. Final paint color shall match the final wall color.

E. Cement Mortar Internal Lining: Cement mortar lining and bituminous seal coat as per AWWA C104.

F. Exterior Pipe Coating: The exterior of pipe shall have the standard asphaltic coating.

2.6 VALVES

A. Gate Valves: AWWA C509, Non-rising Stem, Resilient Seat, 200 psi (1380 kPa).

1. Valves 3 inches (75 mm) and larger: Resilient seat valve with gray-or ductile iron body and bonnet; cast iron or bronze double-disc gate; bronze gate rings; non-rising bronze stem and stem nut.

2. Interior and exterior coating: AWWA C550, thermo-setting or fusion epoxy.

3. Underground valve nut: Furnish valves with 2 inch (50 mm) nut for socket wrench operation.

4. Aboveground and pit operation: Furnish valves with hand wheels.

5. End connections shall match main line pipe.

B. Gate Valve Accessories and Specialties

1. Tapping-Sleeve Assembly: ANSI MSS SP-60; sleeve and valve to be compatible with the drilling matching.

a. Tapping Sleeve: Ductile Iron, two-piece bolted sleeve. Sleeve to match the size and type of pipe material being tapped.

b. Valve shall include one raised face flange mating tapping-sleeve flange.

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2. Valve Boxes: AWWA M44 with top section, adjustable extension of length required for depth of burial of valve, plug with lettering

"WATER," and bottom section with base that fits over valve and with a barrel.

3. Operating Wrenches: Steel, tee-handle with one pointed end, stem of length to operate deepest buried valve, and socket matching valve operating nut. (Provide two wrenches for Project.)

4. Indicator Posts: UL 789, FMG approved, vertical-type, cast iron body with operating wrench, extension rod, and adjustable cast iron barrel of length required for depth of burial of valve.

C. Swing Check Valves:

1. Valves smaller than 2 inches (25 mm): ASTM B61, resilient seat, bronze body and bonnet, pressure rating of 200 psi (1380 kPa). Ends to match main line piping.

2. Valves 2 inches (25 mm) or larger: AWWA 508, resilient seat valve with iron body and bonnet, pressure rating of 200 psi (1380 kPa).

3. Coating: AWWA C550, fusion epoxy coated.

D. Detector Check Valves

1. Galvanized cast iron body, bolted cover with air-bleed device for access to internal parts, and flanged ends. Include one-piece bronze disc with bronze bushings, pivot, and replaceable seat. Include threaded bypass taps in inlet and outlet for bypass meter connection.

Set valve to allow minimal water flow through bypass meter when major water flow is required.

a. Standards: UL 312 and FMG approved, 175 psi (1207 kPa).

b. Water Meter: AWWA C700, disc type, at least one-fourth size of detector check valve. Include meter, bypass piping, gate valves, check valve, and connections to detector check valve.

2. Iron body, corrosion-resistant clapper ring and seat ring material, flanged ends, with connections for bypass and installation of water meter.

a. Standards: UL 312 and FMG approved, 175 psi (1207 kPa).

E. Corporation Valves and Curb Valves

1. Service-Saddle Assemblies: AWWA C800.

a. Service Saddle: Copper alloy with seal and threaded outlet for corporation valve.

b. Corporation Valve: Bronze body and ground-key plug, with threaded inlet and outlet matching service piping material.

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2. Curb Valves: AWWA C800, bronze body, ground-key plug or ball, wide tee head, with inlet and outlet matching service piping material, minimum pressure of 200 psi (1375 kPa).

3. Service Boxes for Curb Valves: AWWA M44, cast iron telescoping top section; plug shall include lettering "WATER"; bottom section with base that fits over curb valve.

4. Shutoff Rods: Steel, tee-handle with one pointed end. Stem length shall extend 2 feet (600 mm) above top of valve box for operation of deepest buried valve, with slotted end matching curb valve.

2.7 FLUSHING HYDRANTS

A. Ground-Type Flushing Hydrants: Non-freeze and drainable, of length required for shutoff valve installation below frost line.

1. Pressure Rating: 150 psi (1035 kPa) minimum

2. Outlet: One, with // vertical// // angle // discharge

3. Hose Thread: NPS 2-1/2 (DN 65), with NFPA 1963 external hose thread for use by local fire department, and with cast iron cap with brass chain

4. Barrel: // Cast iron // or // steel pipe //

5. Valve: Bronze body with // bronze-ball // or // plunger closure // , and automatic draining

6. Inlet: NPS 2 (DN 50) minimum

7. Hydrant Box: Cast iron with cover, for ground mounting

8. Operating Wrench: One for each unit

2.8 DISINFECTION CHLORINE

A. Liquid chlorine: AWWA B301.

B. Sodium Hypochlorite: AWWA B300 with 5 percent to 15 percent available chlorine.

C. Calcium hypochlorite: AWWA B300 supplied in granular form of 5 g.

tablets, and shall contain 65 percent chlorine by weight.

2.9 WARNING TAPE

A. Warning tape shall be standard, 4 mil. Polyethylene, 3 inch (76 mm) wide tape, detectable type, blue with black letters and imprinted with

“CAUTION BURIED WATER LINE BELOW”.

PART 3 - EXECUTION

3.1 PIPING APPLICATIONS

A. Use pipe, fittings, and joining methods for piping systems according to the following applications.

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1. Transition couplings and special fittings with pressure ratings at least equal to piping pressure rating may be used, unless otherwise indicated.

2. Do not use flanges or unions for underground piping.

3. Flanges, unions, grooved-end-pipe couplings, and special fittings may be used, instead of joints indicated, on aboveground piping and piping in vaults.

B. Underground water-service piping NPS 2 (DN 50) shall be the following:

1. Ductile iron, push-on-joint pipe; ductile iron, push-on-joint fittings; and mechanical-joint pipe; ductile iron, mechanical-joint fittings; and grooved-end pipe; ductile iron-pipe appurtenances; and grooved joints.

3.2 VALVE APPLICATIONS

A. Use threaded- or flanged-end valves for installation in vaults. Use

UL/FMG, non-rising-stem gate valves for installation with indicator posts. Use corporation valves and curb valves with ends compatible with piping, for NPS 2 (DN 50) and smaller installation.

B. Drawings indicate valve types to be used. Where specific valve types are not indicated, the following requirements apply:

1. Use the following for valves in vaults and aboveground:

a. Gate Valves, NPS 2 (DN 50) and Smaller: Bronze, non-rising stem.

3.3 DUCTILE IRON PIPE

A. Install Ductile Iron, water-service piping according to AWWA C600 and

AWWA M41-3rd Edition.

B. Pipe shall be sound and clean before laying. When laying is not in progress, the open ends of the pipe shall be closed by watertight plug or other approved means.

C. When cutting pipe is required, the cutting shall be done by machine, leaving a smooth cut at right angles to the axis of the pipe. Bevel cut ends of pipe to be used with push-on bell to conform to the manufactured spigot end. Cement lining shall be undamaged.

D. Push on joints shall be made in strict accordance with the manufacturer’s instruction. Pipe shall be laid with bell ends looking ahead.

3.4 ANCHORAGE INSTALLATION

A. Install water-distribution piping with restrained joints. Anchorages and restrained-joint types that may be used include: concrete thrust blocks,.

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B. Install anchorages for tees, plugs and caps, bends, crosses, valves, and hydrant branches. Include anchorages for the following piping systems:

1. Gasketed-Joint, Ductile Iron, Water-Service Piping: According to AWWA

C600.

C. Apply full coat of asphalt or other acceptable corrosion-resistant material to surfaces of installed ferrous anchorage devices.

3.5 VALVE INSTALLATION

A. AWWA Valves: Install each underground valve with stem pointing up and with valve box.

B. UL/FMG, Valves: Install each underground valve and valves in vaults with stem pointing up and with vertical cast iron indicator post.

C. MSS Valves: Install as component of connected piping system.

D. Corporation Valves and Curb Valves: Install each underground curb valve with head pointed up and with service box.

E. Raise or lower existing valve and curb stop boxes and fire hydrants to finish grade in areas being graded.

3.6 FLUSHING HYDRANT INSTALLATION

A. Install post-type flushing hydrants with valve below frost line and provide for drainage. Support in upright position. Include separate gate valve or curb valve and restrained joints in supply piping.

B. Install ground-type flushing hydrants with valve below frost line and provide for drainage. Install hydrant box flush with grade. Include separate gate valve or curb valve and restrained joints in supply piping.

C. Install sampling stations with valve below frost line and provide for drainage. Attach weather-resistant housing and support in upright position. Include separate curb valve in supply piping.

3.7 CONNECTIONS

A. Drawings indicate general arrangement of piping, fittings, and specialties. Install water service lines to a point of connection within approximately 5 feet (1500 mm) outside of building(s) to which service is to be connected and make connections thereto. If building services have not been installed provide temporary caps and mark for future connection.

3.8 FIELD QUALITY CONTROL

A. Conduct piping tests before joints are covered and after concrete thrust blocks have hardened sufficiently. Fill pipeline 24 hours before testing and apply test pressure to stabilize system. Use only potable water.

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B. Prior to final acceptance, provide a video record of all piping from the building to the municipal connection to show the lines are free from obstructions, properly sloped and joined.

C. Perform hydrostatic tests at not less than one-and-one-half times working pressure for two hours.

1. Increase pressure in 50-psi (350-kPa) increments and inspect each joint between increments. Hold at test pressure for 1 hour; decrease to 0 psi (0 kPa). Slowly increase again to test pressure and hold for

1 more hour. Maximum allowable leakage is 2 quarts (1.89 L) per hour per 100 joints. Remake leaking joints with new materials and repeat test until leakage is within allowed limits.

D. Prepare reports of testing activities.

3.9 IDENTIFICATION

A. Install continuous underground warning tape 12 inches (300 mm) directly over piping.

3.10 CLEANING

A. Purge new water-distribution piping systems and parts of existing systems that have been altered, extended, or repaired before use.

B. Use purging and disinfecting procedure prescribed by local utility provider or other authorities having jurisdiction or, if method is not prescribed by authorities having jurisdiction, use procedure described in AWWA C651 or do as follows:

1. Fill the water system with a water/chlorine solution containing at least 50 ppm of chlorine; isolate and allow to stand for 24 hours.

2. Drain the system of the previous solution and refill with water/chlorine solution containing at least 200 ppm of chlorine;

isolate and allow system to stand for 3 hours.

3. After standing time, flush system with clean, potable water until no chlorine remains in water coming from system.

4. Submit water samples in sterile bottles to authorities having jurisdiction. Repeat procedure if biological examination shows evidence of contamination.

C. Prepare reports of purging and disinfecting activities.

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