Sections_C-J.pdf

SECTION C

TABLE OF CONTENTS

Section Number Title

02110 Site Clearing

02310 Grading

02315 Excavating, Trenching, and Backfilling

02316 Rock Removal

02370 Erosion and Sediment Control

02510 Water Distribution Mains

02516 Disinfection and Bacteriological Testing of

Water Distribution

02518 Water Service Lines

02525 Spring Box Development

02526 Water Collection Screens

02530 Sanitary Sewer

02532 Sewer Service Lines

02540 Septic Tank Drainfield System

02541 Pressurized Drainfields

02545 Mound Soil Absorption System

02620 Curtain Drain

02670 Water Wells

02740 Asphaltic Concrete Paving

02920 Topsoiling, Seeding, Fertilizing, and Mulching

03300 Cast-in-Place Concrete

04070 Masonry Grout

11240 Chemical Fed Equipment

13220 Individual Slow Sand Filter

15450 Individual Water System Well & Surface

16100 Electrical

EXHIBITS

Exhibit Number Title

EXHIBIT 1 AREA MAP

EXHIBIT 2 AS-BUILT INDIVIDUAL & COMMUNITY SERVICES

EXHIBIT 3 INDIVIDUAL WATER AND SEWER SYSTEM

EXHIBIT 4 SEWER SERVICE CONNECTION

EXHIBIT 5 SEWER SERVICE SADDLE

EXHIBIT 6 SEWER SERVICE SEWER SERVICE LINE CLEANOUT

EXHIBIT 7 CONCRETE SEPTIC TANK

EXHIBIT 8 SEPTIC TANK FILTER

EXHIBIT 9 BIOTUBE EFFLUENT FILTER

EXHIBIT 10 SEPTIC TANK & EFFLUENT PUMP

EXHIBIT 11 DRAINFIELD WITH GRAVEL

EXHIBIT 12 GRAVEL DRAINFIELD INSPECTION PORT

EXHIBIT 13 DISTRIBUTION BOX AND SERIAL CHAMBER DRAINFIELD

EXHIBIT 14 CHAMBER DRAINFIELD

EXHIBIT 15 ISOMETRIC VIEW – CHAMBER DRAINFIELD

EXHIBIT 16 CHAMBER DRAINFIELD INSPECTION PORT

EXHIBIT 17 LOW PRESSURE DOSED DRAINFIELD TRENCH WITH GRAVEL

EXHIBIT 18 INFILTRATOR CHAMBER PRESSURE DOSING OPTIONS

EXHIBIT 19 LOW PRESSURE DOSING – INFILTRATOR CHAMBERS

EXHIBIT 20 PRESSURIZED GRAVELLESS DRAINFIELD

EXHIBIT 21 TRENCH – SUITABLE SOIL

EXHIBIT 22 TRENCH – UNSUITABLE SOIL

EXHIBIT 23 CONCRETE THRUST BLOCKING

EXHIBIT 24 MARKER POST

EXHIBIT 25 ROAD CROSSING STEEL ENCASEMENT

EXHIBIT 26 PAVEMENT CUT

EXHIBIT 27 OSHA NOTE

EXHIBIT 28 CI VALVE & VALVE BOX INSTALLATION

EXHIBIT 29 GATE VALVE & BOX

EXHIBIT 30 AIR/VACUUM RELEASE VALVE

EXHIBIT 31 OFFSET 1-INCH AIR RELEASE VALVE

EXHIBIT 32 FLUSH HYDRANT WITH GATE VALVE

EXHIBIT 33 WATER SERVICE CONNECTION

EXHIBIT 34 WATER SERVICE CONNECTION W/CURB STOP

EXHIBIT 35 HOUSE CONNECTION

EXHIBIT 36 WATER STORAGE TANK

EXHIBIT 37 SLOW SAND FILTER

EXHIBIT 38 ROUGHING FILTER

EXHIBIT 39 YARD HYDRANT

EXHIBIT 40 WATER COLLECTION SCREEN

EXHIBIT 41 SPRING DEVELOPMENT BOX

SPECIAL PROVISIONS

C.1 SCOPE OF WORK

The work to be done under this contract consists of furnishing all labor, materials, equipment, and supervision necessary to construct replacement septic system consisting of cleanout, septic tank, sewer pipe, distribution box, leaching pits, septic tank abandonment, county permit and other required appurtenances in accordance with the attached drawings and specifications.

C.2 SITE CONDITIONS

The Contractor shall determine actual site conditions with regard to surface vegetation and other miscellaneous obstacles to construction. The Contractor shall perform, at no additional cost, all necessary clearing, grubbing, and disposal of these and other obstacles in order to do work required by the contract.

Locations, materials, and sizes of any utilities shown are approximate only and are not meant to be a complete representation of all utilities actually present. The Contractor shall determine exact locations and details from the responsible utility authority.

C.3 CONTRACT DOCUMENTS

A maximum of 2 sets of contract drawings and specifications will be furnished without charge to the Contractor at award of this contract, except applicable publications incorporated by reference which will be furnished on request at the cost of reproduction.

C.4 DAYS OF WORK

Construction work shall not be normally permitted on Saturdays, Sundays, or Federal holidays. The Contractor may submit a written request to the Project Engineer for permission to work on any Saturday, Sunday, or Federal holiday. Written approval from the Contracting Officer must be obtained before the Contractor may work on any such day.

C.5 LAWS AND PERMITS AFFECTING WORK

The Contractor shall at all times observe and comply with Federal, State, City, and County laws, Tribal ordinances and regulations which in any manner affect the conduct of the work;

and all such orders and decrees as exist at the present and which may be enacted later by legislative bodies or tribunals having legal jurisdiction or authority over the work. All other required permits, certificates and licenses shall be obtained by and at the expense of the Contractor. No pleas of misunderstanding or ignorance thereof will be considered. The Contractor shall be wholly responsible for any claim or liability arising from or based on the violation of any such law, ordinance, regulation, order or decree.

C.6 RIGHTS-OF-WAY

The Government shall obtain from the Tribe rights-of-way and easements necessary to install facilities located specifically by the plans and specifications.

C.7 MAINTENANCE OF UTILITIES AND SITE FACILITIES

The Contractor is responsible to determine the exact location of any and all utilities not specifically located on the plans and to protect them from damage during construction.

Should any utility be damaged or disturbed, the Contractor shall immediately notify the Project Engineer and the owner of the damaged utility. Any and all damage that results from work under the contract shall be promptly repaired at the expense of the Contractor.

During the progress of work, the Contractor shall protect all existing vegetation, structures, sidewalks, streets, mailboxes, ditches, culverts, signposts, fences, driveways, and similar items. If the Contractor must remove or disturb these facilities, provision shall be made to maintain a temporary facility serving the same purpose as that which it was intended to replace. Destruction of vegetation shall be kept to a minimum. Upon completion of the work, the Contractor shall restore all such facilities to a condition at least equal to that existing prior to construction. The Contractor shall not obstruct access to the site.

The Contractor shall perform his work at all times in a manner to ensure minimal obstruction to traffic and minimal inconvenience to the general public.

C.8 CONTRACT SUBMITTAL REQUIREMENTS

The Contractor shall furnish material submittals, design submittals, shop drawings, test reports, and as-built drawings in accordance with the requirements detailed in the Contract Submittal Requirements section.

C.9 CLEANUP AND FINISH GRADING

The Contractor shall restore all areas disturbed by construction to a condition at least equal to that existing prior to construction. Excess construction materials, equipment, tools, waste excavation, and rubbish shall be removed. Excavated areas shall be finish graded to provide drainage as required by the drawings and specifications, or in the absence of specific requirements, to provide drainage away from the facilities constructed and to provide drainage away from excavated areas and installed facilities. Where a lawn is disturbed, the Contractor shall place a generous amount of grass seed to the disturbed area following final grading.

C.10 MEASUREMENT AND PAYMENT

As line item quantities are estimates, contractor will be paid full compensation based upon the actual quantities utilized/completed and verified by the Engineer. The price paid for the completed item of work shall include full compensation for furnishing all labor, materials, tools, equipment, and performing all work required by the provisions of the contract to furnish and install the items of work, completed in place. In all cases, the finished product shall be a complete, operational system or component. The price for the completed item of work shall also include all applicable state and local sales or other taxes.

SECTION 02316

ROCK REMOVAL

PART 1 - GENERAL

1.01 SUMMARY

A. This section includes removal of identified and discovered rock during excavation, expansive tools, and explosives to assist in rock removal.

1.02 UNIT PRICE – MEASUREMENT AND PAYMENT

A. ROCK REMOVAL:

1. Basis of Measurement: Cubic Yard. Measured to the nearest 0.5 yd3.

2. Basis of Payment: Payment shall be full compensation for the specified Rock Removal indicated in the bid schedule and includes preparation (explosive or mechanical disintegration), loading, and removing from site.

Payment will not be made for over excavation or replacement materials.

1.03 RELATED SECTIONS

A. 02315 Excavation, Trenching, and Backfill

1.04 REFERENCES

A. NFPA 495-Code for Manufacture, Transportation, Storage, and Use of Explosive

Materials.

B. OSHA, 29 CFR Part 1926, Subpart U.

C. BATF 27 CFR Part 181

1.05 DEFINITIONS

A. Rock: Solid mineral material with a volume in excess of 1 cu yd. or solid material that cannot be removed without mechanical methods (drilling, jackhammer or other).

B. Loose Rock: Boulders and other detached stones, with a minimum volume of 1 cubic yard.

1.06 SUBMITTALS

A. Submit a blasting plan at least 14 days before drilling operations begin or whenever a change in drilling and blasting procedures is proposed. Include full details or drilling and blasting patterns and the techniques proposed for controlled and production blasting including provisions for loading wet holes.

B. The blasting plan contains the following:

1. Maximum dimensions for width, length, and depth of shot.

2. Typical plan and section view of the drill pattern for controlled blast holes and production blast holes. How the free face, burden, hold diameters, depths, spacings, inclinations, and depth of sub drilling if any.

3. Loading pattern diagram showing:

a. Location of each hole.

b. Location and amount of each type of explosive in each hole including primer and initiators.

c. Location, type, and depth of stemming.

4. Initiation and delay methods, delay times, and overall power factor.

5. Manufacture’s data sheets for all explosives, primers, initiators, and other devices.

6. Working procedures and safety precautions for storing, transporting, and explosives.

7. Working procedures and safety precautions for blasting. The blasting plan for quality control and record keeping purposes. The review of the blasting plan does not relieve the Contractor of the responsibility for using existing drilling and blasting technology and for obtaining the required results.

C. Blaster in Charge: At least 10 days before delivery or use of explosive material, designate in writing a blaster-in-charge. Submit evidence that the blaster-in-charge has a valid state blaster’s license issued by an equivalent licensing body for the type of blasting required.

D. Blasting Log: Submit a Blasting Log for each blast. The Blasting Log includes the following:

1. All actual dimensions of the shot including blast-hole depths, burden, spacing, subdrilling, stemming, powder loads, and timing.

2. A drawing or sketch showing the direction of the face, or faces, and the physical shot layout.

1.07 QUALITY ASSURANCE

A. Seismic Survey specialists with five years of documented experience.

B. Explosives specialists in disintegration of rock, with five years of documented experience.

1.08 REGULATORY REQUIREMENTS

A. Conform to applicable code for explosive disintegration of rock and NFPA 495 for handling explosive materials.

B. Obtain permits from authorities having jurisdiction before explosives are brought to site or drilling is started.

C. Furnish copies or other proof of all applicable permits and licenses. Comply with

Federal, state and local regulations on the purchase, transportation, storage, and use of explosive material.

1.09 PROJECT CONDITIONS

A. Conduct survey and document conditions of buildings near locations of rock removal prior to blasting. Photograph existing conditions identifying any irregularities.

B. Advise owners of adjacent buildings or structures, IN WRITING, prior to executing seismographic survey. Explain blasting and seismic operations.

C. Obtain a seismic survey prior to rock excavation to determine maximum charges that can be used at different locations without damaging adjacent properties or other work.

PART 2 – PRODUCTS

2.01 MATERIALS

A. All materials recommended by explosive firm, and required by authorities jurisdiction, following seismic survey:

1. Explosives

2. Delay Device

3. Blast Mat Materials

PART 3 - EXECUTION

3.01 EXAMINATION

A. Verify site conditions and note subsurface irregularities affecting work of this section.

3.02 PREPARATION

A. Identify required lines, levels, contours, and datum.

B. Test Blasting: Drill, blast, and excavate one or more short test sections as proposed in the blasting plan before full-scale drilling and blasting. Test blasts may be made away from or at the final slope line.

1. Space blast holes for controlled blasting 30 inches apart for the initial test blast. Adjust the spacing as approved. Use the approved spacing in the full-scale blasting or subsequent test blasts if necessary.

2. When a test blast is determined to be unacceptable, revise the blasting plan and make an additional test blast. A test blast is unacceptable when it results in fragmentation beyond the final rock face, fly rock, vibration, air blast, over break, damage to the final rock face, or is a violation of other

C. Controlled Blasting

a. General: Drill and blast according to the blasting plan. Use controlled blasting methods to form the final rock cut faces when the rock heights is than 10 feet above ditch grade and slopes are staked 2:1 or steeper.

1. Use downhole angle or fan drill blast holes for pioneering the tops of rock cuts or preparing platform for controlled blasting.

2. Use the blast-hole diameter established for controlled blasting and hole-spacing not exceeding 30 inches.

D. Drilling:

1. Remove overburden soil and loose rock along the top of the excavation for at least 30 feet beyond the production hole drilling limits or to the end of the cut.

2. Drill 3 1 inches diameter controlled blast holes along the final rock face line. Drill controlled blast holes within 3 inches of the proposed surface location. Drill controlled blast holes at least 30 feet beyond the production holes to be detonated or to the end of the cut.

3. Use drilling equipment with mechanical or electrical-mechanical devices that accurately control the angle the drill enters the rock. Select a lift height and conduct drilling operations so the blast-hole spacing and downhole alignment does not vary more than 9 inches from the proposed spacing and alignment. When more than 5 percent of the holes exceed the variance, reduce the lift height and modify the drilling operations until the blast holes are within the allowable variance. Maximum lift height is limited to 50 feet.

4. A 12-inch offset is allowed for a working bench at the bottom of each lift for drilling the next lower controlled blasting-hole pattern.

5. Adjust the drill inclination angle or the initial drill collar location so the required ditch cross section is obtained when the bench is used.

6. Drilling 20 inches below the ditch bottom is allowed for removing the toe.

E. Blasting:

1. Free blast holes of obstructions for their entire depth. Place charges without carving the blast hole walls.

2. Use the types of explosives and blasting accessories necessary to obtain the required results. A bottom charge may be larger than the line charges if no overbreak results. Do not use bulk ammonium nitrate and fuel oil for controlled blasting.

3. Stem the upper portion of all blast holes with dry sand or other granular material passing a 9.5 mm sieve.

4. When pre-splitting, delay the nearest production blast row at least 25 after blasting the pre-split line. Pre-split a minimum of 30 feet of production blasting zone.

5. Where cushion (trim) blasting, delay the cushion blast row from 25 to 75 milliseconds after blasting the nearest production row.

F. Production Blasting:

1. Drill production holes and blast according to blasting plan. Take all necessary precautions to minimize blast damage to the final rock face.

2. Following a blast, stop work in the entire blast area and check for misfires before allowing workers to return to excavate the rock.

3. Remove or stabilize all cut face rock that is loose, hanging, or potentially dangerous. Scale by hand methods using a standard steel mine-scaling rod.

Machine scale using hydraulic splitters or light blasting when necessary.

Leave minor irregularities or surface variations in place if they do not create a hazard. Drill the next lift only after the cleanup work and stabilization work is complete.

4. If blasting operation cause fracturing of the final rock face, repair or stabilize it in an approved manner. Repair or stabilization techniques.

5. Halt blasting operations if any of the following occur.

a. Slopes are unstable.

b. Slopes exceed tolerances.

c. Backslope damage occurs.

d. Safety of the public is jeopardized.

e. Property or natural features are endangered.

f. Fly rock is generated.

6. Drill the row of production blast holes closest to the control blast line parallel and no closer than 6 feet to the control blast line. Do not drill production blast holes lower than the bottom of the control blast holes.

7. Use the types of explosives and blasting accessories that will obtain the desired fragmentation. Clean the blast holes, place the charges, and stem the holes according to “Controlled Blasting”. Detonate production holes on a delay sequence toward a free face.

3.03 ROCK REMOVAL BY A MECHANICAL METHOD

A. Excavate and remove rock by the mechanical method.

B. Drill holes and utilize expansive tools and wedges to fracture rock.

C. In utility trenches, excavate to 10 inches below invert elevation of pipe and 20 inches wider than pipe diameter.

D. Remove excavated materials and dispose of off-site at contractor’s expense.

E. Correct unauthorized rock removal in accordance with compacting and backfilling requirement of Section 02315 (Excavating, Trenching, Backfilling for Pipelines) and to directions of Engineer.

3.04 ROCK REMOVAL BY EXPLOSIVE METHODS

A. Provide seismographic monitoring during blasting process.

B. Drill blasting holes within 12 feet of finished slope.

C. Disintegrate rock and remove from excavation site.

D. Excavate 6 inches below invert elevation of pipe and 12 inches wider than pipe diameter in utility trenches.

E. Remove excavated material and dispose of off-site.

F. Correct unauthorized rock removal in accordance with Section 02315 (Excavating, Trenching, and Backfill).

END OF SECTION

SECTION 02370

EROSION AND SEDIMENT CONTROL

A. This section includes erosion and silt control measures accomplished through the use of interception embankments, berms, dikes, dams, silt fences, settling basins, slope paving, ditch checks, rip-rap, mulches, erosion mats, and other erosion control devices or methods. The owner will provide the contractor with a Storm Water Pollution Prevention Plan (SWPPP) which will provide the framework for reducing soil erosion and minimizing pollutants in storm water during construction.

1.02 UNIT PRICE - MEASUREMENT AND PAYMENT

A. Work specified in this section is to be incorporated into other unit prices. No separate unit prices will be awarded for this work.

1.03 RELATED WORK

A. Section 02310 – Grading

B. Section 02315 – Excavation, Trenching, and Backfill

C. Section 02920 – Topsoil, Seeding, Fertilizing, and Mulching

A. California DOT – Standard Specifications for Construction of Local Streets and Roads, 2002.

1.05 SUBMITTALS

A. Silt fence material, (or alternate erosion control material proposed).

B. Storm Water Pollution Prevention Plan (If requested by the Project Engineer and required by law).

1.06 QUALITY ASSURANCE

A. Erosion control materials, methods and practices shall conform to the SWPPP provided to the contractor by the owner as well as applicable state agency handbooks of Best Management Practices, or tribal laws established for the purpose of erosion control on construction sites.

PART 2 - PRODUCTS

2.01 POSTS

A. Wood or steel, 2” x 2” x 54” minimum.

2.02 SILT FENCING

A. 15-mil thick screen fabric with a minimum of 120 pounds of grab tensile strength and an equivalent minimum opening size of 170.

B. All seams shall be heat sealed or sewn

2.03 EROSION FIBER LOGS

A. Made of aspen excelsior barbed, curled wooden fibers inside a tube of polyester netting.

B. Acceptable Products: Equal to American Excelsior Sediment Log

2.04 GEOTEXTILE FABRIC

A. Woven Polypropylene Geotextile

B. Acceptable Products: Equal to Mirafi 500X

PART 3 – EXECUTION

3.01 GENERAL

A. Coordinate temporary and permanent erosion control measures to ensure economical, effective and continuous erosion control.

B. Keep construction areas small.

C. Divert drainage away from construction areas.

D. Prevent discharge or deposition of soil materials into surface waters.

E. Inspect and maintain temporary erosion control materials to ensure its continued effectiveness.

1. Remove sediment material captured by erosion control systems before the systems fail.

2. Inspect and repair erosion control systems following rain events.

F. Remove erosion control only after the area has stabilized and vegetation has developed to the extent that further erosion is unlikely.

G. Submit and comply with a storm water erosion control plan in accordance with local Tribal requirements, State BMP’s and Federal EPA requirements.

3.02 TEMPORARY EROSION CONTROL

A. Use temporary erosion control measures to protect ditches and drainage ways as shown on the plans.

B. Erosion Bales

1. Place bales at right angles to the direction of flow.

2. Securely anchor each bale with stakes.

3. Remove bales after the soil has been stabilized or as directed by the project engineer. Bales may be used for mulching material if they meet the specifications of Section 02920.

C. Silt fencing (in lieu of or in combination with erosion bales)

1. Place silt fences following a constant elevation contour, in an arc or horseshoe shape with the ends pointing up towards the slope.

2. Drive stakes into the soil to a depth such that the silt fence contacts the ground.

3. Trench the silt fence into the ground and tamp the bottom of the filter material to ensure that runoff is forced through the fence rather than under it.

D. Erosion Control Fiber Logs (in lieu of or in combination with other methods)

1. Install as necessary or as otherwise indicated on the plans.

2. Place perpendicular to the direction of flow in a drainage swale or ditch.

3. Butt ends of logs up against each other and secure using nylon zip ties.

4. Place hardwood stakes every 2-feet along the downstream side of the erosion log and secure the log to the stakes.

5. Ensure that the installation is installed flush with the ground so that runoff is forced through the erosion log rather than over it.

3.03 PERMANENT EROSION CONTROL

A. Quarry Spall Dams:

1. In ditches with grades greater than 2%, install quarry spall dams once every 50-feet.

2. Create a dam with a height of 1-foot, across the width of the ditch.

3. Place geotextile between the quarry spalls and the subgrade.

B. Stabilize areas adjacent to drainage ways where culverts are being installed using geotextile and quarry spalls.

SECTION 02510

WATER DISTRIBUTION MAINS

REVISED 2014

1.01 SECTION INCLUDES

A. This section includes the installation of water mains, gates valves, hydrants, disinfection and other appurtenant structures for community water systems.

A. PVC WATER MAIN:

1. Measurement: Linear Foot. Measured to nearest foot.

PVC Water Main at the size indicated in the bid schedule and includes:

trench excavation, placement of bedding material, hand trimming, pipe, fittings, thrust blocks, water main metallic tracer tape, marker posts, hydrostatic testing, disinfection, backfilling, as-builts, site cleanup, bacteriological sampling and testing, and all appurtenances not otherwise specified in the bid schedule.

B. FLUSH HYDRANT ASSEMBLY:

1. Measurement: Each.

Flush Hydrant Assembly at the size indicated in the bid schedule and includes: excavation, angle flush hydrant valve, galvanized pipe, gate valve and box, hydrant wrench, gate valve key, thrust blocks, connection to water main, gravel, concrete, backfilling, protection posts, as-builts, site cleanup, and other appurtenances necessary to make a workable installation.

C. GATE VALVE AND BOX:

Gate Valve and Box indicated in the bid schedule and includes: Includes excavation, gate valve, gate valve key, box, thrust blocks, protection posts, backfilling, as-builts, site cleanup, and other appurtenances as necessary.

D. PRESSURE REDUCING VALVE (PRV):

Pressure Reducing Valve indicated in the bid schedule and includes:

excavation, pipe, vault, gate valves, gate valve key, boxes, thrust blocks, fittings, protection posts, backfilling, as-builts, site cleanup, and other appurtenances as necessary.

E. AIR RELEASE COMBINATION VALVE:

Air Release Combination Valve indicated in the bid schedule and includes: excavation, pipe, vault, air release combination valve, fittings, marker posts, backfilling, as-builts, site cleanup, and other appurtenances as necessary.

F. CONNECTION TO EXISTING WATER MAIN:

Connection to the Existing Water Main indicated in the bid schedule and includes: excavation, removal and disposal of existing water main and fittings, locating existing valves, draining existing water mains, coordinating shut-down with local utility authority, fittings, disinfection, backfilling, as-builts, site cleanup and other appurtenances as necessary.

For the purposes of this contract, a water main is defined as larger than 2 inches in diameter.

1.03 RELATED SECTIONS

A. Section 02315 – Excavation, Trenching, and Backfill

B. Section 02518 – Water Service Lines

C. Section 02110 – Site Clearing

D. Section 02675 – Disinfection of Water Main System

E. Section 03300 – Cast-in-Place Concrete

A. ANSI/AWWA C509 – Resilient Seat Gate Valves for Water and Sewerage

Systems

B. ANSI/AWWA C515 – Reduced Wall, Resilient Seated Gate Valve for Water

Supply Service

C. ANSI/AWWA C605 – Underground Installation of Polyvinyl Chloride (PVC) Pressure Pipe and Fittings for Water

D. ANSI/AWWA C651– Disinfecting Water Mains

E. ANSI/AWWA C900 – Polyvinyl Chloride (PVC) Pressure Pipe, 4 Inch Through

12 Inch, for Water Distribution

F. AWWA C901 – Polyethylene (PE) Pressure Pipe, Tubing, and Fittings, ¾ inch through 3 inch, for Water.

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

H. ASTM D2241 - Poly (Vinyl Chloride) (PVC) Plastic Pipe (SDR-PR).

I. ASTM D2466 - Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40.

J. ASTM D2855 - Making Solvent-Cemented Joints with Poly (Vinyl Chloride)

(PVC) Pipe and Fittings.

A. PVC Water Main and Fittings

B. Flush Hydrant Assemble

C. Gate Valves and Boxes

D. Pressure Reducing Valve

E. Air Release Combination Valve F. Special Anchoring Retainer Glands

G. Warning Tape

H. Tracing Wire, Box, and Splice Materials

I. Method of Connection to Existing Distribution System

J. Method of Pressure Testing

K. Pressure Test Certification Forms

1.06 DEFINITIONS

A. Fully Restrained: Pipe installed with or including:

1. Certalok C900 joined pipe (or equal)

2. Pipe with Flanged connections

3. Pipe with mechanical joints.

1.07 QUALITY ASSURANCE

A. Water testing shall be done by a State certified laboratory.

B. Pipe: Perform Work in accordance with manufacturer’s recommended procedures.

C. Valves: Mark manufacturer’s name and pressure rating on valve body.

D. Pressure testing per Section 3.08.

1.08 DELIVERY, STORAGE, AND HANDLING

A. Deliver, store, and protect products to site.

B. Deliver and store valves in shipping containers with labeling in place.

1.09 ACCEPTANCE

A. Work covered by this section will not be accepted until the backfilling and testing connected with the work has been completed satisfactorily.

B. Any section of water main that is found defective in material, alignment, or joints before acceptance shall be corrected to the satisfaction of the Project Engineer.

2.01 WATER DISTRIBUTION PIPE AND FITTINGS

A. Pipe size, material, and pressure rating as indicated on the plans or bid schedule.

B. Manufacturers: Certainteed, John Manville, Diamond Plastics, PW Pipe, or equal

C. Polyvinyl Chloride Pipe

1. Pipe: AWWA C900, elastomeric-gasket couplings, Pressure Class 150

(DR18).

2. Joints: ASTM D 3139 with elastomeric seals conforming to ASTM F477.

3. Fittings: AWWA C111, rubber-gasket joints

4. Trace Wire: Solid strand magnetic detectable conductor, plastic covering, imprinted with “Water Line” in large letters.

D. Polyvinyl Chloride Pipe-Restrained: 1 Pipe: Certainteed C900/RJ (DR18, Pressure Class 150) Pipe, or equal Joints: CERTA-LOK Joint or equal.

E. PVC Pipe: ASTM D 2241, SDR-21 (For 2-inch diameter pipe).

1. Fittings: ASTM D 2466, PVC

2. Joints: ASTM D 3139 compression gasket ring

3. Trace Wire: Solid strand magnetic detectable conductor, plastic covering, imprinted with “Water Line” in large letters.

F. Joint Thrust Restraint

1. Concrete Thrust Blocks:

a. One part Portland cement, 2 1/2 parts of fine aggregate, 3 1/2 parts coarse aggregate and just enough water for a workable consistency.

b. #4 rebar

2. Special Anchoring Retainer Glands for Mechanical Joints:

a. PVC: Equal to

(1) EBAA Iron Series 2000 PV

(2) Romac Industries Grip Ring

2.02 GATE VALVES

A. Manufacturers: American Darling, Mueller, Clow, or Waterous, or equal.

B. Standard: AWWA C509 or C515.

C. Joints: Mechanical unless otherwise indicated

D. Constructed with a non-rising stem (NRS) and a 2-inch square stem-operating nut, opening counter-clockwise.

E. Provide valves equal to: Mueller A–2360–20 or Waterous (American Flow

Control) or Series 2500 (DI – Resilient seated).

2.03 GATE VALVE BOX

A. Manufacturer: Tyler Pipe or equal.

B. Cast iron and of the sliding type, sized for use with the appropriate valve. Box lid marked "WATER." Box shall extend from the body of the valve to the finished grade.

2.03 COMBINATION AIR/VACUUM RELIEF VALVE

A. APCO, Combination Air Valve, 150 psi, C.I., Model 140C, single body, double orifice, cast iron.

B. Valve Type: Float operated, with operating pressures up to 150 psi, equal to

APCO Air Release Model 143C.

2.04 FLUSH HYDRANTS

A. Manufacturer: James Jones Company, Model J344HP, Model J342, or Equal

B. Conform to AWWA C503, wet-barrel.

1. Hydrant of bronze material.

2. Inlet connection is 4-inch flanged or hub connection.

3. Use one hose (2 1/2 inch) nozzle with threads conforming to National Fire

Protection Association (NFPA) 1963 for National Standard Fire Hose Coupling Screw Threads.

4. Bury length is to the nearest 6-inch from the bottom of the connecting pipe to the ground line of the hydrant.

5. The direction of the rotation of the operating nut to open the hydrant is left (counterclockwise).

6. Paint the exterior of the hydrant traffic or safety yellow.

7. The outlet nozzle cap and chain is bronze.

C. Furnish two hydrant wrenches per contract.

D. Galvanized Pipe Schedule 40 ASTM A120, Scotch Rap 50 per drawing.

E. Use Teflon compound on all joints.

2.05 WARNING TAPE

A. Supply detectable warning tape that is a minimum of 2 inches thick, blue or striped blue, and have printing that warns of a water line below.

2.06 TRACER WIRE AND BOX

A. Wire: Provide #10 AWG jacketed solid copper wire, type THHN/THWN.

B. Box: Provide 4 inch Schedule 40 PVC pipe and a 4-inch PVC threaded watertight plug as a box for terminations or junctions of tracer wire.

C. Splice Kit: Use underground waterproof splice materials.

D. Bring wire to surface at every gate valve or hydrant.

2.07 PIPELINE MARKER POSTS

A. Posts: Equal to Carsonite composite utility marker CUM-375, blue color.

2.08 ACCESSORIES

A. Supply one each: 5’ long gate valve wrench and valve box cover key.

B. Marker Post

1. Manufacturers: Carsonite, Greenline

2. Flexible fiberglass, dual-sided.

3. Blue decal label on both sides as specified in drawing.

C. Bollards

1. Black iron, 3-inch diameter, 6-feet long, buried 3-feet.

2. Cover each post at the top with 2 coats of yellow reflectorized paint or tape for a band 3-inch.

3. Metallic Tracer Tape, magnetic detectable conductor, plastic covering, imprinted with "Water Line" in large letters.

3.04 DELIVERY, STORAGE AND HANDLING

A. Ensure that pipe is free from defects and damage at time of delivery and prior to installation in the trench.

B. Remove all defective pipe from the site within 24-hours of discovery.

C. Handle pipe with padding between metal machinery and pipe.

D. Keep dirt and foreign matter away from pipe interiors and sealing surfaces.

E. Lower pipe carefully into the trench without dropping, rolling, or dumping.

3.05 WATER MAIN INSTALLATION

A. Install water mains and appurtenances in the locations and of the sizes and materials shown on the drawings and bid schedule.

B. Ensure that ends of pipe in the trench are plugged during all work interruptions and all other times necessary to prevent soil, rodents and trench water from entering the pipeline or contaminating the joints.

C. Promptly remove all debris that enters the pipeline and swab the area with a 1% hypochlorite solution.

D. Install pipe with a minimum cover depth of 36-inches measured from finished grade to top of pipe.

E. Install thrust restraint on all fittings and appurtenances. Contractor’s option of the following unless specifically noted on the plans:

1. Concrete Thrust Blocks:

a. Pour thrust blocks against the fitting and undisturbed earth.

b. Place concrete thrust blocks so that the pipe and joints will be accessible for repair.

c. Install rebar around the fitting and embed rebar in concrete thrust block as shown on detail drawings.

d. Use full 20-foot sections of pipe out of fittings or valves, otherwise use restrained joints within 20-feet of fitting or valve.

2. Special Anchoring Retainer Glands:

a. Install in accordance with manufacturer’s recommendations.

b. Project Engineer may specify than an additional restraint be used for pipe sections near critical fittings.

3. Joint Restraint Rodding (“shackle rods”):

a. Rod from hydrant tees to ears on the hydrant base elbow.

b. Rod from fitting to fitting.

c. Install tie bolts to connect tie rods, if required.

d. Install duc lugs where required to increase the width of the rodding.

e. Paint rods and hardware with two coats of bituminous coating.

F. Install fully restrained push-on joints where specifically noted on the plans or if the mains are explicitly called out as “fully restrained” in the bid schedule.

G. Horizontal Pipe Deflection:

1. PVC:

a. C900 Water Main may be deflected in accordance with AWWA C605, for sizes 4-inch through 10-inch.

Nominal Size Minimum Bending Offset Per 20’ Radius Length 4-inch 100 feet 23-inches 6-inch 144 feet 16-inches 8-inch 189 feet 12-inches 10-inch 231 feet 10-inches

b. Deflection will not be permitted at the joint and must be via a continuous arc of constant radius.

3.06 GATE VALVE, BOX AND MARKER INSTALLATION

A. Install valves at locations indicated on the plans.

B. Support gate valves on a precast block during assembly, and thrust block or fully restrain the valve.

C. Set valves and boxes plumb.

D. Center the valve box over the valve nut.

E. Set valve box elevation

1. Flush with finished grade elevation.

2. Flush with the surfaced street.

3. 2-inches below the level of an unimproved street.

F. Valve Marker Post Installation:

1. Set post with 18-inches of post above grade with “V” pointing toward gate valve.

2. Paint the marker post “safety blue”.

3. Stencil the size of the valve and the distance to the valve on the post with

2-inch tall black lettering.

4. Install every 300 feet or as directed by Engineer.

G. Install concrete collar around gate valve lid.

3.07 HYDRANT INSTALLATION

A. Install hydrant and auxiliary gate valve at the location indicated on the plans.

B. Connect auxiliary gate valve to tee and hydrant to gate valve using a 3-foot section of 6-inch water main pipe on each unless otherwise indicated on the plans.

C. Fully restrain joints between tee and auxiliary gate valve, and between auxiliary gate valve and hydrant.

D. Set hydrant on precast concrete block.

E. Set hydrant with the traffic flange at an elevation of 1 to 3 inches above finished grade.

F. Stand hydrant plumb with the large nozzle toward the street.

G. Place gravel, a minimum of 18 cubic feet per hydrant, from 18 inches below to 6 inches above the weep hole opening.

3.08 WARNING TAPE INSTALLATION

A. Install warning tape in water main trench 1-foot below finish grade, centered over the pipeline.

3.09 TRACING WIRE INSTALLATION

A. Install with all PVC and HDPE Pipe.

B. Provide a minimum of three attachments to the pipe per pipe length with duct tape or install in the initial backfill layer 6-inches above and along the pipe centerline.

C. Avoid underground splices, but where necessary, make splices with an underground, waterproof splice kit.

D. Provide riser boxes at maximum intervals of 1000 feet or at hydrant locations.

1. Install an independent tracing wire line between each tracing wire box in each direction of pipe.

2. Bring tracing wire a minimum of 18 inches above ground surface directly behind each hydrant using box construction specified.

3. Install box to elevation that will not interfere with operation and maintenance of the hydrant.

3.10 PIPELINE MARKER POST INSTALLATION

A. If the pipeline is not in a roadway or sidewalk and is in an unimproved area, install Carsonite marker posts at 500-foot intervals along the pipeline, centered over the pipe.

B. If the pipeline is under a traveled roadway, install the marker posts offset from the pipe at a consistent distance.

C. Allow 36-inches of the post to be exposed above grade.

D. Stencil the water main information, including offset distance, diameter of pipe, and pipe material neatly on the post.

3.11 PRESSURE AND LEAKAGE TESTING

A. Whenever practical, before backfill is placed or joints covered, test pipe for leaks.

B. Furnish necessary material, equipment, and labor for testing including, but not limited to: water, pump, water storage vessel, piping, two water pressure gauges, valve, hydrant, graduated container and corporation stops.

1. Water pressure gauges shall be liquid filled with 5 psi or less increments.

2. Pump shall be of a design that limits introduction of air. Defective equipment shall be replaced.

C. Test mains and have equipment fully prepared prior to calling the Project Engineer or his representative on site to witness the passing of a test. Notify Project Engineer 48 hours prior to pressure testing of any section.

D. Test duration: 2 hours minimum.

E. Maximum length of test section: 1,000-feet. Longer lengths may be tested, but the allowable leakage shall be limited to the 1,000-foot length.

F. Maximum allowable pressure differential: A pressure differential no greater than

25 psi above the test pressure will be allowed due to elevation changes unless approved by Engineer.

G. Testing Procedure:

1. Fill test section with potable water at a velocity below 1 ft./s.

2. Expel all air from the test section.

3. Install corporation stops at high points if necessary to facilitate air removal, and cap off after successful completion of the test.

4. Verify that all hydrant lead valves and main valves within the test section are open.

5. Pressurize the main to 150 psi or to the pressure class or rating of the pipe as measured at the lowest elevation along the test section, whichever is less.

6. If pressure drops more than 5 psi during the test, immediately re-pressurize the line to the original test pressure and continue test, and record amount of water required to re-pressurize the line. Two water pressure gauges are required to verify pressurization.

7. At the end of the test, re-pressurize the line to the original test pressure, and record amount of water required to re-pressurize the line.

8. Method of Water Measurement: Supply a means of accurate water measurement that is compatible with the pressurizing equipment (e.g.

pump and hoses), such as a water meter or a water container with graduations.

9. Add total amount of water required to re-pressurize the line during and at the end of the test and compare with the allowable leakage as calculated below.

H. Allowable Leakage Determination

a. L = (N*D*P1/2)/7400

2. L = Allowable Leakage (gph) N = Total Length Tested Divided by the Standard Pipe Length D = Nominal Diameter of Pipe (inches) P = Test Pressure (psi)

1. Example Allowable Leakage Chart Using Formula Above

PVC and DI Pipe with 20-foot sections

Allowable Leakage/ 1000 feet (gph)

I. Repair, at no cost to owner, any section of the line that fails this test.

J. Repair any visible leakage, regardless of the results of the leakage test.

K. Retest all repaired sections of line, at no cost to owner, until pressure test is successfully completed.

L. Complete pressure test certification forms and submit to Project Engineer within five (5) days of pressure test.

3.12 TESTING OF TRACING WIRE

A. Test tracing wire for proper functioning using a conductive/inductive type locator in the presence of the Project Engineer or his representative.

B. Repair and retest, at no extra cost to the owner, any section of tracing wire that does not function properly.

3.13 FLUSHING WATER MAINS

A. Flush with potable water to provide 3 volumetric exchanges in the pipeline at a minimum velocity of 3 feet per second.

B. “Pig” line at after flushing if sediment or debris is still visible in the discharge.

3.14 CONNECTIONS TO EXISTING DISTRIBUTION SYSTEMS

A. Shutoff of mains will not be permitted overnight, over weekends, or on federal, state or tribal holidays.

B. Coordinate system tie-in with the owner and/or operator of the existing utility a minimum of three working days before any connection is made.

C. Notify residents affected by the water shutoff of the time and day of shutoff a minimum of two working days in advance.

D. Only start work when all the materials, equipment and labor are on site.

E. Spray or swab all connection components with a 1% hypochlorite solution prior to installation.

F. Once work on the connection has commenced, it shall proceed continuously without interruption, and as rapidly as possible until completed.

G. Visually inspect any joints not pressure tested for leakage.

1 Test under system pressure prior to backfilling.

2 Test in the presence of the IHS representative.

3 Repair and retest any joint with leakage until no leakage is visible.

3.12 DISINFECTION OF WATER MAIN

A. Flush, disinfect, and pressure test system per Section 02675 (Disinfection of Water Main System).

3.13 FIELD QUALITY CONTROL

A. Government may perform compaction tests per ASTM D1557 when desired. Cost of testing will be at government expense. If compaction is not in accordance with specifications, retesting will be done at Contractor’s expense.

B. Contractor is responsible for removing, replacing, and retesting all work that does not meet specified requirements. This applies even if a government representative was present during installation.

SECTION 02516

DISINFECTION AND BACTERIOLOGIAL TESTING

OF WATER DISTRIBUTION MAIN

PART 1 – GENERAL

3.15 SUMMARY

A. Section includes disinfection of potable water distribution and transmission system; and testing and reporting results.

B. Related Sections:

1. Section 02510 – Water Distribution Mains

2. Section 02518 – Water Service Lines

3. Section 15450 – Individual Water Systems-Wells & Surface

3.16 UNIT PRICE - MEASUREMENT AND PAYMENT

A. Work specified in this section is to be incorporated into other unit prices. No separate unit prices will be awarded for this work.

3.17 REFERENCES

A. American Water Works Association:

1. AWWA B300 - Hypochlorites.

2. AWWA B302 - Ammonium Sulfate.

3. AWWA B303 - Sodium Chlorite.

4. AWWA C651 - Disinfecting Water Mains.

B. Uniform Plumbing Code:

1. UPC 609.9- Disinfection of Potable Water Systems

3.18 SUBMITTALS

A. Product Data: Submit procedures, proposed chemicals, and treatment levels for review.

B. Disinfection Report:

1. Type and form of disinfectant used.

2. Date and time of disinfectant injection start and time of completion.

3. Test locations.

4. Name of person collecting samples.

5. For community water system or well; initial and 24 hour disinfectant residuals in treated water in ppm for each outlet tested.

For individual water system: initial and 3 hour disinfectant residuals in treated water in ppm for each outlet tested

6. Date and time of flushing start and completion.

7. Disinfectant residual after flushing in ppm for each outlet tested.

C. Bacteriological Report:

1. Date issued, project name, and testing laboratory name, address, and telephone number.

2. Time and date of water sample collection.

3. Name of person collecting samples.

4. Test locations.

5. For community water system or well: initial and 24 hour disinfectant residuals in ppm for each outlet tested.

For individual water system: initial and 3 hour disinfectant residuals in ppm for each outlet tested.

6. Coliform bacteria test results for each outlet tested.

7. Certify water conforms, or fails to conform, to bacterial standards of authority having jurisdiction.

3.19 QUALITY ASSURANCE

A. Perform Work in accordance with AWWA C651 and UPC 609.9.

3.20 QUALIFICATIONS

A. Water Treatment Firm: Company specializing in disinfecting potable water systems specified in this section with minimum three years’ experience.

2.01 DISINFECTION CHEMICALS

A. Chemicals: AWWA B300, Hypochlorite, AWWA B301, Ammonium Sulfate, and AWWA B303, Sodium Chlorite.

A. Verify piping system has been cleaned, inspected, and pressure tested.

B. Perform scheduling and disinfecting activity with start-up, water pressure testing, adjusting and balancing, demonstration procedures, including coordination with related systems.

3.02 INSTALLATION

A. Provide and attach required equipment to perform the Work of this section.

B. Perform disinfection of water distribution system and installation of system and pressure testing.

C. Inject treatment disinfectant into piping system.

D. Maintain disinfectant in system for 24 hours for community system or well and 3 hours for individual water system.

E. Flush, circulate, and clean until required cleanliness is achieved; use municipal domestic water.

F. Replace permanent system devices removed for disinfection.

3.03 FIELD QUALITY CONTROL

A. Disinfect in accordance with one of the methods outlined in Section 5 of AWWA C651 or UPC 609.9- Disinfection of Potable Water System. Use of liquid chlorine or chlorine tablets is not permitted

1. Continuous Feed Method:

a. Feed a chlorine solution into water entering the main such that the water will have a 25-mg/L free chlorine concentration.

b. Continue feeding until the entire pipeline to be disinfected is filled with the chlorinated water.

c. At the end of 24-hours, there must be at least 10-mg/L free chlorine residual as evidenced by residual tests taken at approximately 1200 feet intervals along the main.

2. Slug Method:

a. Feed a chlorine solution into water entering the main such that the water will have a 100-mg/L free chlorine concentration.

b. Apply the solution continuously and sufficiently to ensure that a column of water with 100 mg/L free chlorine residual is formed in the pipe.

c. Ensure that all parts of the main and its appurtenances are exposed to the column for at least 3-hours.

d. Check the residual of the column at 1200 feet intervals along the main. If it drops below 50 mg/l, inject additional chlorine solution into the entire column such that its residual is raised to 100 mg/l.

B. For test methods 1 and 2 in Article 3.03 Paragraph A, ensure that the chlorine solution is introduced within 10-feet of the end of the section being disinfected and for all cases is being withdrawn or wasted from the most extreme point relative to the point of water introduction. If branches exist, ensure that the chlorinated solution reaches all portions of the branches.

C. After disinfection, flush chlorinated water from the pipe in an environmentally safe manner. In no case shall direct disposal to a surface water be permitted.

1. Check the chlorine residual at time of disposal.

2. If disposal is to the ground surface or ditch, neutralize the chlorine residual if the free residual is above 1 mg/L.

3. Use the following neutralization chemical schedule:

a. Sulfur Dioxide at 0.8 lb. / 100,000 gallons / mg/L of free chlorine.

b. Sodium Bisulfite at 1.2 lb. / 100,000 gallons / mg/L of free chlorine.

c. Sodium Sulfite at 1.4 lb. / 100,000 gallons / mg/L of free chlorine.

d. Sodium Thiosulfate at 1.2 lb. / 100,000 gallons / mg/L of free chlorine.

4. Continue flushing until the residual reaches distribution system levels.

D. After disinfecting and flushing but before the water main is placed in service, collect and test water samples for bacteriological quality.

1. Sample in accordance with the Standard Methods for Examination of

Water and Wastewater.

2. Take two consecutive batches of tests, 24 hours apart.

3. Collect samples from each pipe end and at approximately 1200 feet intervals along each main.

4. Deliver samples to a state certified testing lab and provide Project Engineer with results within 24 hours of laboratory results.

E. Regardless of the chosen testing method, if initial disinfection fails to produce satisfactory bacteriological results, re-chlorinate the mains branch lines and/or water service line, flush and take new samples until satisfactory results are obtained.

F. Do not place main in service until the Project Engineer has received safe bacteriological results.

SECTION 02518

WATER SERVICE LINES

A. This section includes the material and installation requirements for water service lines complete with corporation stops and saddles, meter setters, water meters, meter boxes and other appurtenances for community water systems, individual water systems, wells, water collection screens, and spring development boxes.

A. WATER SERVICE LINE:

1. Measurement: Linear Foot.

Water Service Line as indicated in the bid schedule and includes: trench excavation, hand trimming, pipe, fittings, backfilling, disinfection, marker posts, as-builts and site cleanup.

B. WATER SERVICE CONNECTION:

Water Service Connection as indicated in the bid schedule and includes:

excavation, connection to live water main, saddle, corporation stop, marker post, coordination of system downtime, notification to local utility, fittings, and backfilling.

C. HOUSE CONNECTION:

House Connection as indicated in the bid schedule and includes: Includes excavation, house connection, shutoff valve, box, hose bib, vacuum breaker,…