Attachment 003 Package 002 Supply System Complete.pdf

DATE:

BY:

USDA FOREST SERVICE

LAKE WEDINGTON

WATERLINE -SUPPLY LINE

SCHEDULE OF ITEMS - SCHEDULE A

ITEM

NO.

DESCRIPTION METHOD OF

MEASUREMENT

PAY

UNIT

EST.

QTY.

UNIT

PRICE

AMOUNT

1 Mobilization LSQ LPSM 1

2 3” HDPE Waterline, including Tank Bypass Line (Supplied in 500’ Rolls)

CQ

FT 5,907

3 6” HDPE Waterline CQ FT 60

4 Excavation, Pipe Installation, Tracer Wire, Bedding, Incidental Accessories, Testing, and Backfill

CQ

FT 5,967

5 3” Gate Valves with MJ’s, Trans Packs, Flanges and all required Incidental Accessories for connection

CQ

EA 5

6 6” Gate Valves with MJ’s, Trans Packs, Flanges and all required Incidental Accessories for connection

CQ

EA 1

7 HDPE Tee (3”x3”x2” Blow Off) with MJ’s, Trans Packs, Flanges and all required Incidental Accessories for connection

CQ

EA 1

8 HDPE Tee (3”x3”x3” Tank Bypass) with MJ’s, Trans Packs, Flanges and all required Incidental Accessories for connection

CQ

EA 1

9 HDPE Tee (6”x6”x3” Tank Bypass to Distribution) with MJ’s, Trans Packs, Flanges and all required Incidental Accessories for connection

CQ

EA 1

10 HDPE Tees (6”x6”x2’ Blow off near Tank) with MJ’s, Trans Packs, Flanges and all required Incidental Accessories for connection

CQ

EA 1

11 Reducer 3” HDPE to 2-1/2” Galvanized (Field Verify) at Tank

CQ

EA 1

Reducer 6” HDPE to 4” DI (Field Verify)

CQ

EA 2

ARI D-040 1” Metal air release w/ ball valve with all required accessories and connection

EA 1

Thrust Blocks

CQ EA

15 Reduced Pressure Zone Backflow Preventor 3” (RPZ)

16 Insulated Lockable RPZ Hard Cover & Soft Cover

17 Chlorine Injection with Incidental Accessories and Testing

18 Renogy SKU: RNG-WSKIT-5KWH- PRO-US, The Craftsman Kit, Solar Panel, Inverter, Batteries, and Accessories

19 562 Valve Boxes w/ Lid at Chlorine Injector & Air Release Valve

3” Cla-Val 210-03 Altitude Valve w/ Sensing Line, Isolation Valve, Incidental Accessories, and Insulated Cover for Sensing Line into Tank

21 Precast Concrete Vault for Altitude Valve Assembly

22 Dispose / Remove Excess Material Excavated & Construction Materials

CQ LPSM

23 Tank plumbing & connections, verify operational

24 Tank Cleaning, Hatch seal, and Mesh, see Note on C109.

25 Mainguard #77 Blow Off Assembly CQ EA 2

26 Composite Waterline Markers CQ EA 16

Total Estimated Cost

Note: These Specifications have been Edited for the USFS Wedington Waterline Extension to Water Tank 5/30/25 Rev. 3 Plan Set

STANDARD SPECIFICATIONS FOR DESIGN AND

CONSTRUCTION OF WATER IMPROVEMENTS

2023 EDITION

AUGUST 2023

3685 E HERITAGE PKWY; FARMINGTON, AR 72730

[1]

TABLE OF CONTENTS

Contents

SECTION 1000

1.01 DIVISION 1 – SPECIFICATIONS – SUMMARY OF WORK

1.02 WORK INCLUDED

1.03 DEFINITIONS

1.04 LAWS, REGULATIONS AND ORDINANCES

1.05 PERMITS AND LICENSES

1.06 CONSTRUCTION LAYOUT

1.10 INSPECTION, OBSERVATION AND TESTING

1.11 FINAL ACCEPTANCE

1.12 CLOSEOUT SUBMITTALS

1.13 NO-LEAD MATERIALS

SECTION 2000 TRENCH SAFETY PART 1 – GENERAL

1.01 WORK INCLUDED

SECTION 2100

1.01 WORK INCLUDED

PART 2 – PRODUCTS

PART 3 – EXECUTION

3.01 TEMPORARY EROSION CONTORL

3.02 OTHER CONTROLS

3.03 PERMANENT EROSION CONTROL

SECTION 2200 SITE PREPARATION PART 1 – GENERAL

1.01 WORK INCLUDED

1.02 PROTECTION

PART 2 – MATERIALS

PART 3 – EXECUTION

3.01 GENERAL

3.02 SITE PREPARATION

SECTION 2300

1.01 WORK INCLUDED

1.02 QUALITY ASSURANCE

1.03 PROTECTION

[2]

1.04 DUST CONTROL

1.05 SEDIMENT CONTROL

PART 2 – PRODUCTS

2.01 FOUNDATION MATERIAL

2.02 EMBEDMENT MATERIAL

2.03 GRIT EMBEDMENT MATERIAL

2.04 AGGREGATE BACKFILL MATERIALS

2.05 SELECT NATIVE BACKFILL MATERIAL

PART 3 – EXECUTION

3.01 EXCAVATION – GENERAL

3.02 DISPOSAL OF EXCAVATED MATERIALS

3.03 EXPLOSIVES

3.04 TRENCH DEWATERING

3.05 EXCAVATION – TRENCHES

3.06 EMBEDMENT AND BACKFILLING – GENERAL

3.07 BEDDING AND BACKFILLING PIPE

SECTION 3100

1.01 WORK INCLUDED

1.02 SUBMITTALS

PART 2 – PRODUCTS

2.01 CONCRETE

2.02 REINFORCEING STEEL

PART 3 – EXECUTION

SECTION 4000

1.01 WORK INCLUDED

1.02 SUBMITTALS

1.03 LEAD-FREE BRASS

PART 2 – PRODUCTS

2.01 HIGH DENSITY POLYETHYLENE (HDPE) PRESSURE PIPE AND TUBING ... 31

2.02 POLYETHYLENE ENCASEMENT (PIPE WRAP)

2.03 PIPE RESTRAINTS

2.04 RESTRAINED FLANGED COUPLING ADAPTERS

2.10 RESTRAINED COUPLINGS

2.11 BOLTS AND NUTS

[3]

2.12 GATE VALVES

2.13 BUTTERFLY VALVES

2.14 VALVE BOXES

2.15 BACKFLOW PREVENTION

2.16 OPERATING NUT EXTENSIONS

2.17 BLOW-OFFS

2.18 AIR RELIEF VAVLES

2.19 SERVICE SADDLES

2.20 TAPPING SLEEVES

2.21 SERVICE CONNECTION MATERIALS

2.22 TRACER WIRE

2.23 MARKING TAPE

2.24 WATER LINE MARKERS

PART 3 – EXECUTION

3.01 INSTALLATION

SECTION 4100

1.01 WORK INCLUDED

1.02 SUBMITTALS

1.03 PROTECTION

PART 2 – PRODUCTS

2.01 BEDDING AND BACKFILL

2.02 PIPE, FITTINGS, AND MATERIALS

2.03 CONCRETE

PART 3 – EXECUTION

3.01 EXCAVATION – GENERAL

3.02 LAYOUT

3.03 PIERS

3.04 COLD WEATHER INSTALLATION

3.05 PIPE INSTALLATION – PUSH ON JOINTS

G. TRACER WIRE

I. WATER LINE MARKERS

3.06 PIPE INSTALLATION – MECHANICAL JOINT CONNECTIONS

3.07 SOLID SLEEVE INSTALLATION

3.08 VALVE INSTALLATION

[4]

3.09 FIRE HYDRANT INSTALLATION

3.10 METER SETTINGS

3.11 BLOW-OFF INSTALLATION

3.12 TAPPING SADDLE INSTALLATION

3.13. TAPPING SLEEVE INSTALLATION

3.14 INSTALL OF POLYETHYLENE PROTECTION MATERIAL

3.15 CONCRETE THRUST BLOCKS AND ANCHOR COLLARS

3.16 BACKFILLING AND INSPECTION

3.17 WATER LINE INSTALLATION - AERIAL CROSSINGS

3.18 SEWER LINE CROSSING

3.19 STORM SEWER CROSSING

3.20 CUT AND CAP

3.21 ABANDON CORPORATION STOP

SECTION 5000

1.01 WORK INCLUDED

1.02 SCOPE OF WORK

1.03 DELIVERABLES

PART 2 – PRODUCTS

PART 3 – EXECUTION

3.01 VISUAL INSPECTION DURING INSTALLATION AND BEFORE BACKFILL . 57

3.02 PRESSURE TEST FOR TAPPING SLEEVES

3.03 PRESSURE TEST FOR WATER PIPELINES AND SERVICE LINES

3.04 DISINFECTION

3.05 BACTERIOLOGICAL SAMPLES

3.06 FINAL VISUAL INSPECTION

3.07 TRACER WIRE CONTINUITY TESTING

SECTION 6002 GRAVEL SURFACE REPAIR

PART 1 – GENERAL

1.01 WORK INCLUDED

1.02 RELATED WORK

1.03 REGULATIONS AND STANDARDS

1.04 TESTING, OBSERVATION, AND INSPECTION REQUIREMENTS

PART 2 – PRODUCTS

2.01 BASE COURSE MATERIALS

[5]

PART 3 – EXECUTION

3.01 PLACING GRAVEL SURFACING

3.02 TRAFFIC CONTROL

SECTION 6100

1.01 WORK INCLUDED

1.02 SCOPE OF WORK

PART 2 – PRODUCTS

2.01 TOPSOIL

2.02 FERTILIZER

2.03 SEEDING

2.04 MULCH

2.05 LIME

2.06 WATER

PART 3 – EXECUTION

3.01 SEQUENCE

3.02 FINISH GRADING

3.03 CLEARING

3.04 FERTILIZER AND LIME APPLICATION

3.05 APPLICATION OF SEED

3.06 HYDROSEEDING

3.08 APPLICATION OF MULCH

3.09 PROTECTION

3.10 SOD PLACEMENT

3.11 WATERING

3.12 MAINTENANCE

3.13 COMPLETENESS

3.14 INTERMITTENT CLEANUP

ROAD CROSSING………………………………………………………………………...……74

WATER MAIN ENCASEMENT……………………………………………………………….74

THRUST BLOCKING ………………………………………………………………………….74

BLOWOFF ASSEMBLY………………………………………………………………………..74

SINGLE METER SETTING…………………………………………………………………….74

REPAIR DETAILS..…………………………………………………………………………….74

GATE VALVE..…………………………………………………………………………………74

[6]

TYPICAL SOIL TRENCH.……………………………………………………………………..74

ROCK EXCAVATION TRENCH....……………………………………………………………74

WATER CROSSING AT SEWER LINE……………………………………………………….74

ALTITUDE VALVE…………………………………………………………………………….75

SOLAR PANEL…………………………………………………………………………………81

[7]

SECTION 1000

GENERAL REQUIREMENTS AND PROCEDURES

PART 1 – GENERAL

1.01 DIVISION 1 – SPECIFICATIONS – SUMMARY OF WORK

The Lake Wedington Water System Connection project is located at the Lake Wedington Recreation Area, Boston Mountain Ranger District, which is approximately 16 miles west of Fayetteville , AR via highway 16. The contractor will be responsible for installing approximately 6000 ft of 3 inch HDPE water line, valves, and associated appurtenances between new meter and a U.S. Forest Service 22,000 gal water tank. This contract also includes flushing, testing, and disinfecting waterlines and tank. The US Contracting Officer Representative (COR) is responsible for all Contract Administration, the include scheduling, submittal approvals, construction, contract modifications, testing, and final approvals.

PROJECT COORDINATION

Notify the Forest Service Contracting Officer Representative (COR), two weeks prior to start of work.

The contractor shall perform work in a manner that will protect the safety of public and employees.

All work will be done in accordance with all OSHA Regulations.

All quantities, sizes, and lengths are approximate and shall be field verified before submitting quote.

Pre-bid site visit will be conducted by Contracting Officer Representative (COR).

The contractor shall perform the work between the hours of 7:00 AM and 5:00 PM Monday through Friday excluding Federal Holidays unless approved by the COR. Access to the area will be coordinated with COR.

SUBMITTAL PROCEDURES

The contractor shall be required to furnish submittals on all items they intend to use. Submittals shall be made prior to commencing any work that relates to a respective submittal. Allow review time of 14 days for all submittals. Incomplete information on the proposed items will result in rejection.

The contractor shall submit the manufacturer's information. This information shall include:

Product name and model number, Manufacturer, Product description, Technical data, and Warranties for:

1. Pipe, valves, valve boxes and fittings

2. Compression couplings for similar and dissimilar pipes

3. Gradation for bedding material

4. Detectable trench tape “Water,” Blue in color

5. Method of disposing water used in testing and disinfection of waterlines

[8]

6. Trace wire

1.02 WORK INCLUDED

A. These Specifications for water improvements are provided to outline procedures and criteria for the design and construction of water facilities within Washington Water Authority’s service area boundary.

B. In addition, all rules, regulations, and requirements of the Arkansas Department of Health are the minimum standard for all plan requirements, construction, and development practices to be approved by Washington Water Authority. In cases were the Specifications set forth exceeds the Arkansas Department of Health requirements, then this Specification shall govern.

C. Additionally, this Specification includes the requirement that the minimum standards of design and construction specified herein, that directly affects health and safety, must further comply with the recommendations of both (1) the 10 State Standards (GLUMRB) and (2) the American Water Works Association (AWWA). Any conflict that directly affects health and safety between these Specifications and the recommendations from 10 States Standards, or the recommendations from AWWA, must be resolved to provide the greatest protection of health and safety.

D. All rules, regulations and requirements of the Arkansas Board of Licensure for

Professional Engineers and Professional Surveyors shall be the minimum standard for professional surveying and for professional engineering.

E. The Engineer of Record is responsible for design and compliance with the latest edition of local Ordinances and Specifications, Arkansas Department of Health minimum Standards and State of Arkansas Rules, Regulations and Laws, or any Federal Law, Rule, or Regulation.

F. These Specifications do not replace the Engineer of Record’s specifications and contract documents, however these specifications set forth the minimum requirements for design and construction of all water and sanitary sewer with the jurisdiction of Washington Water Authority. These specifications may be included by reference only in the Engineer of Record’s documents.

G. The Engineer of Record for any project designed and constructed under the requirements of these Specifications, shall provide to Washington Water Authority a sealed (PE) letter report stating that the design and construction of the water improvements met the minimum requirements of these Specifications. This sealed letter report will also contain

[9] documentation of any special conditions or additions to these Specifications for the specific project.

H. Comprehensive, full time construction observation services shall be provided by, or under the direction of, the Engineer of Record.

I. Washington Water Authority shall not be responsible, nor bears any liability for the Contractor’s means, methods, techniques, sequences and procedures of construction, or safety precautions and programs incident thereto in performing or furnishing any of the work. Washington Water Authority shall not be responsible for any actions resulting from the direction of the Engineer of Record.

J. Special conditions may arise on projects that are not covered in these Specifications. Such special conditions, complete detail as to design, materials, method of construction, testing, and/or other procedures shall be submitted to Washington Water Authority for review and approval.

1.03 DEFINITIONS

A. Engineer of Record – A qualified Professional Engineer licensed in the State of Arkansas, for the Owner, City of Government agency.

B. Owner – Any Individual, partnership, firm, corporation, or other entity who, as property owner, initiating work.

C. Provide – Furnish and install, complete in place, operating, tested and approved.

D. Products – The materials, systems, and equipment provided by the Contractor.

E. Washington Water Authority – Division of the Rural Development of Authority

Washington County Arkansas, having full and complete authority to manage, operate, improve, extend, and maintain water works and water distribution.

1.04 LAWS, REGULATIONS AND ORDINANCES

A. All Federal, State, County and Municipal Laws, Regulations, or Ordinances shall be complied with on all projects. Where the requirements of another jurisdictional authority having influence on work outside the purview of Washington Water Authority are greater than that provided by these Specifications, the work shall conform to the greater requirement of that respective jurisdictional authority.

1.05 PERMITS AND LICENSES

A. All permits required to accomplish the work shall be the responsibility of the Engineer of

Record. Such permits may include but are not limited to permits for work within Arkansas

[10]

Department of Transportation R/W, railroad crossing permits, Arkansas Department of Environmental Quality “Notice of Intent”, and or U.S. Army Corps of Engineers. Work shall not be started without appropriate permit(s) in place.

[11]

1.06 CONSTRUCTION LAYOUT

A. The layout and staking of the construction work shall be by trained and qualified survey personnel under the supervision of the Engineer of Record. Construction layout shall consist of staking necessary to determine alignment and elevations to properly construct the proposed facilities.

1.10 INSPECTION, OBSERVATION AND TESTING

A. Comprehensive, full-time construction observation services shall be provided by the

USFS, with collaboration from Engineer-of-Record.

B. Only authorized personnel from Washington Water Authority are permitted to operate valves on the existing water system. Under no circumstances shall the Contractor operate any valve on the existing water system.

C. All field test required for a project shall be witnessed by Washington Water Authority in the presence of the Engineer-of-Record or his authorized representative and the Contractor.

D. Washington Water Authority representative will be determined at, or prior to, the pre-construction meeting.

E. Washington Water Authority requires 24-hour working day notice on all tests. Contractor shall pre-test the installation prior to notifying Washington Water Authority of the test.

F. Tests delayed by weather or other factors will be rescheduled on the same basis. If a test cannot by reasonably scheduled so that a representative of Washington Water Authority can be present, the Engineer-of-Record will witness the test and certify to Washington Water Authority the results.

G. In no case shall a test be made without the presence of the Engineer-of-Record’s representative and the Contractor. It is the responsibility of the Engineer-of-Record and/or the Contractor to coordinate the scheduling of test with Washington Water Authority and with other parties involved.

H. All equipment, materials, and labor required for testing shall be furnished by the Contractor at his expense.

I. Generally, no Contractor or Engineer-of-Record involvement is required in the taking of samples for the Bac-T test except that the Contractor is responsible for the proper flushing of the line prior to samples being taken by Washington Water Authority. However, Washington Water Authority may require the presence of the Contractor or Engineer-of- Record when questions have been raised as to the methodology or techniques used the sampling process.

[12]

J. Bac-T samples are sent to the Arkansas Department of Health for testing. Results are available on-line at the ADH website. Results obtained by Washington Water Authority may be forwarded to the Engineer-of-Record either by email, fax, or mail upon request of the contractor.

K. Lines failing the Bac-T tests shall be re-sampled as soon as practicable. If a line fails two

(2) consecutive Bac-T test, the line must be re-chlorinated before Bac-T samples can be taken again, Washington Water Authority shall not be responsible for rescheduling Bac-T tests.

L. The hydrant test shall consist of checking the operation of the hydrant valve and flowing the hydrant. This test will be performed jointly by the Contractor and Washington Water Authority representative. This test will be done after the pressure test has been completed.

The hydrant valve shall be left in the open position during the test and after the test is complete.

1.11 FINAL ACCEPTANCE

A. USFS will be deemed to have accepted water lines and appurtenances for ownership upon completion of the following.

1. Acceptable Final Inspection by the following:

a. A representative of Washington Water Authority

b. The Engineer-of-Record

c. The Contractor

2. Acceptable walk-through by Washington Water Authority for location, grade, and condition of water meter settings

3. Record Drawings are received by USFS & Washington Water Authority

[13]

4. Engineer-of-Record Certification is received by USFS & Washington Water Authority

5. Letter of Final Acceptance is provided by the USFS & Washington Water Authority to the Engineer-of-Record.

B. No water meter shall be set until all final acceptance requirements are met and the line is accepted by WWA.

1.12 CLOSEOUT SUBMITTALS

A. Furnish two copies of Operation and Maintenance Data for all valves, boxes, equipment, and miscellaneous appurtenances. Include recommended maintenance and testing procedures and frequencies.

B. List names, addresses, and telephone numbers of suppliers including local source of supplies and replacement parts.

1.13 NO-LEAD MATERIALS

A. All subsequent parts, materials, components found with the Specifications and/or Plans are to be “No-Lead” where applicable, even if not explicitly stated.

[14]

SECTION 2000

TRENCH SAFETY

1.01 WORK INCLUDED

A. The Contractor is responsible for ensuring that safe working conditions exist and safety procedures are being followed at the work site. The Contractor is responsible to notify OSHA of the commencement of all water construction.

B. If the Contractor is working for any public body (state agency, county, municipality, school district, or other local tax unit or improvement district), they shall be responsible for notifying the Arkansas Department of Labor Safety Division, (501) 682-9091 when water jobs are to begin. A copy of a letter or reporting form shall be sent to Washington Water Authority.

C. Regarding Trench Safety Systems, the Contractor shall design, install, and maintain a "Trench Safety System" in strict compliance with OSHA (Occupational Safety and Health Administration) Part 1926 of the Code of Federal Regulations and all other applicable federal, state, and local requirements.

[15]

SECTION 2100

EROSION AND SEDIMENT CONTROL

A. The Contractor shall accomplish temporary and permanent erosion protection related to grubbing, grading, excavation, paving, and other work as directed by the Engineer and as shown on the approved drawings. An erosion control plan shall be submitted to the Engineer prior to the commencement of construction.

B. The Contractor is responsible for implementing Best Management Practices (BMPs) during construction activities, (including, but not limited to, sediment and erosion control structures) and achievement of final stabilization upon completion of construction activities.

C. The Contractor shall be responsible for implementing all applicable requirements of the ADEQ General Stormwater Permit for Construction Activity, the Spill Prevention Control and Countermeasures Plan (SPCCP), as required by USEPA, local Municipal Separate Storm Sewer requirements, and all other environmental regulatory requirements that are associated with the construction activities that they are contracted to perform. The Contractor is responsible for managing all materials, equipment, and activities at the work site in a manner that is in compliance with local, State, and Federal environmental regulations.

PART 2 – PRODUCTS

A. NOT USED

PART 3 – EXECUTION

3.01 TEMPORARY EROSION CONTORL

A. The contractor shall construct temporary berms, dikes, dams, ditching or sediment basins, and maintain such control features until permanent erosion control features are placed all in accordance with Washington Water Authority or State “Erosion Control Standards”.

B. Water removed from open pits and/or trenches shall have silt removed prior to leaving the immediate site of construction. Silt shall be removed by natural vegetation, a straw bale trench dewatering inlet device, settling pond, filter bag, a rock/geotextile fabric sediment trap/basin, or other appropriate sediment control measure. Water filtered through a basin shall not violate any water quality standard and shall have efficient sediment/silt removal prior to discharge to a waterbody.

[16]

C. Contractor shall be responsible for providing adequate number of pumps for prompt and efficient dewatering. Ends of discharge hoses shall be provided with flow dispersion and filtration devices to prevent scouring of surface soils, discharge of turbid water, and/or washout of stream banks. Discharge from dewatering activities shall not be conveyed into or upon any roadside ditch, curb and gutter, street, or publicly used thoroughfare.

D. The direct discharge of silty/muddy water to a stream, offsite, or across areas of equipment access points and/or construction haul roads is strictly prohibited.

3.02 OTHER CONTROLS

A. A dedicated concrete truck was out area shall be maintained to include adequate containment to prevent runoff of concrete truck was water. Concrete truck drivers shall be notified to use wash out area.

B. Contractor shall follow the appropriate waste storage and disposal practices, as per applicable environmental regulatory requirements. Solid waste dumpsters/roll-offs, or other appropriate waste receptacles will be maintained and used at the site. Good housekeeping practices will preclude trash, construction wastes, and debris to be dumped or scattered on the construction site. There shall be no open burning of any waste material.

No solid materials, including building materials, shall be discharge to water of the State.

C. No liquid waste chemicals, fuels, and/or oils are to be leaked or spilled on ground surfaces. Bulk storage of liquid chemical wastes will be provided with secondary containment with a capacity sufficient to contain the volume of the largest container within the secondary containment. All waste materials shall be stored in a manner to prevent releases and should be disposed of by a qualified waste disposal firm at an acceptable waste disposal facility. Records of the disposal of all solid, hazardous, non-hazardous, and liquid wastes are to be maintained by the Contractor. Contractor shall notify the Engineer of any spills or leaks that occur in spite of the preventive measures taken. Contractor shall notify the Engineer of any spills or leaks that occur in spite of the preventive measures taken. Contractor will prepare a report of any spills or leaks in accordance with the reporting and recordkeeping measures described in the BMPs. No contaminants from fuel storage areas, hazardous waste storage and truck wash areas shall be discharged to water of the State. These areas should not be located near a water body.

D. Contractor shall maintain compliance with applicable State and/or local sanitary sewer, septic system, and waste disposal regulations.

E. Off-site vehicle tracking of sediments and the generation of dust must be minimized.

Measures such as stone at construction access points, parking areas, and unpaved roads, providing entrance wash racks or stations for trucks, and/or street sweeping shall be implemented where appropriate. Application of water to construction haul roads should be done, as appropriate, to control dust generation. Application of excessive levels of water that create mud should be avoided.

[17]

3.03 PERMANENT EROSION CONTROL

A. The Contractor shall incorporate permanent erosion control features into the project at the earliest practicable time as the construction progresses all in accordance with the approved plans and project specifications.

[18]

SECTION 2200

SITE PREPARATION

A. Excavation, grading, cutting and removal of trees, shrubs and underbrush, and the removal of any debris existing above natural ground surface and within the cleared area necessary to permit the construction of the improvements.

1.02 PROTECTION

A. In all cases the Contractor is responsible for protecting public and private property and protecting any person or persons who might be injured as a result of the Contractor’s work.

B. All utilities shown on the drawings may not represent the exact location however, the Contractor is responsible for verifying these locations and contacting the Arkansas One Call System before excavating.

PART 2 – MATERIALS

A. NOT USED

3.01 GENERAL

A. The Contractor will be required to submit a plan to build access roads/trails for approval by the Engineer.

B. It shall be the responsibility of each bidder to examine the site carefully and make his own calculations as to costs to be incurred by reason of the requirements of this section.

C. Trees, shrubs, underbrush, and debris removed from the improvement right of way shall be disposed of by the Contractor in a manner approved by Washington Water Utilities.

D. The Contractor shall not remove or disturb any vegetation except that required for the execution of the work.

3.02 SITE PREPARATION

A. Clear areas necessary for performance of the work and confine operations to that area provided through easements, licenses, agreements, and rights-of-way. Entrance upon any

[19] lands outside of that area provided by easements, licenses, agreements, or public rights-of-way, shall be at the Contractor's sole liability.

B. Do not occupy any portion of the project site prior to the date established in the Notice to Proceed without prior approval of the Owner.

C. Contractor shall be aware of certain easement considerations by individual property owners as stipulated in easement documents pertaining to the project.

D. Remove, relocate, reconstruct, or work around natural obstructions, existing facilities and improvements encountered during site preparation as herein specified. Take care while performing site preparation work adjacent to facilities intended to remain in place.

Promptly repair damage to existing facilities. Dispose of waste materials in a satisfactory manner off the work site.

E. Protect, move, or brace public and private utilities as required by the affected utility.

F. Maintain mailboxes in the manner that the Postal Service requires to prevent interruption of mail delivery.

G. Site preparation includes the removal of trees, shrubs, brush, crops, and other vegetation within the limits of the easements (right-of-way), or as may be provided for in licenses, permits and agreements. All efforts shall be made to retain existing landscaping. In the event that trees, shrubbery, and hedges cannot be saved, then prior approval of the Owner and the Owner's Representative must be obtained before the existing landscaping is removed.

1. Trees

a. All trees shall be saved unless removal is approved by Washington Water Authority.

2. Shrubbery

a. Shrubbery shall be saved unless removal is approved by Washington Water

Authority and the Owner’s Representative. Make reasonable efforts to save all shrubbery by trimming, in accordance with acceptable pruning practices, and treating wound surfaces with a commercial pruning compound.

3. Small Plants and Flowers

a. At least two weeks prior to the start of construction, notify property owners of the proposed starting date so that the property owners can remove any small plants or flowers.

[20]

4. Protection of Existing Facilities

a. The Contractor shall notify all property owners in the immediate vicinity of the construction area that may be affected by the construction activities a minimum of one week before starting work in that area. The notification shall include a description of the work, work hours, and a 24-hour contact name and number for the contractor.

b. Fences interfering with construction, and located within public rights-of-way or as may be allowed for in permits or agreements, may be removed only if the opening is provided with a temporary gate which will be maintained in a closed position except to permit passage of equipment and vehicles, unless otherwise herein specified. Fences within temporary construction easements may be removed provided that temporary fencing is installed in such a manner as to serve the purpose of the fencing removed.

c. Fencing removed shall be restored to the condition existing prior to construction unless otherwise specified. The Contractor is solely liable for the straying of any animals protected or corralled or other damage caused by any fence so removed.

d. Driveways and driveway approaches removed or damaged during construction shall be restored to the original condition or better condition prior to construction.

e. Make every reasonable effort to protect private sewer facilities. Private sewer facilities may not be shown on the Plans.

f. Preserve property corners, pins, and markers. In the event any property corners, pins, or markers are removed by the Contractor, such property points shall be replaced at the Contractor's expense and shall be re-set by competent surveyors properly licensed to do such work. In the event such points are section corners or Federal land corners, they shall be referenced and filed with the appropriate authority.

g. Where existing utilities and service lines are encountered, notify the owner thereof at least 48 hours (not including weekends and/or holidays) in advance of performing any work in the vicinity.

h. Excavate, install pipeline, and backfill in the vicinity of such utilities in the manner required by the respective owner and, if requested, under his direct supervision. The Contractor shall be responsible for damages to a public or private utility that may occur as the result of the construction.

[21]

i. Protect, move, or brace public and private utilities as required by the affected utility.

j. Make a reasonable effort to ascertain the existence of obstructions and locate obstructions by digging in advance of machine excavation where definite information is not available as to their exact location. Where such facilities are unexpectedly encountered and damaged, notify responsible officials and other affected parties and arrange for the prompt repair and restoration of service.

[22]

SECTION 2300

EXCAVATION, BACKFILLING, AND COMPACTING

A. Excavation, backfilling, and compaction for water lines, appurtenances, and incidental construction.

1.02 QUALITY ASSURANCE

A. If requested by Washington Water Authority, one moisture/density relationship test

(AASHTO T-99 with Note 7, or AASHTO T-180 with Note 8) shall be taken at the beginning of the project, and one additional moisture/density relationship test shall be taken for every 5,000 cubic yards of imported material. ASTM testing methods for moisture/density Relationships may not be used for embankment and subgrade materials.

B. Determine the field density of backfill in accordance with AASHTO Designation T-147.

C. A minimum of one density test per 500 linear feet of pipe or portion thereof when the pipe is located in the street or under the curb and gutter.

1.03 PROTECTION

A. The Work included in this Project may require excavation and related activities in close proximity to existing buried and aerial utility lines and facilities, such as water lines, sewer lines, storm drains, natural gas lines, electrical power lines, telephone cables, and TV cables. Where their presence is known, the approximate location of such utilities is shown on the Drawings, but all such utilities and individual service lines are not shown.

The Contractor shall be aware of the potential for such utility lines to conflict with intended construction efforts, and the Contractor shall use appropriate precautionary measures to locate and protect such utility lines and services so as to avoid damage and interruptions to service.

B. The Contractor shall contact the owners of the various existing utilities lines and services as may be affected by the construction and solicit their assistance in identifying, locating, marking, and protecting these facilities prior to the beginning of any excavation or other work which might endanger the existing utilities. If such utilities are damaged or impaired because of the Contractor's actions or omissions, the Contractor shall be responsible for the cost of repairs or replacements of the affected or damaged utility or service line.

C. The Contractor shall comply with the Arkansas One-Call System and shall alert potentially conflicting utility systems accordingly.

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D. In all cases, the Contractor is responsible for protecting public and private property; and, work.

1.04 DUST CONTROL

A. The Contractor shall be responsible for maintaining the site and adjoining paved surfaces in a dust free condition. Fugitive dust control is the sole responsibility of the Contractor.

1.05 SEDIMENT CONTROL

A. The Contractor shall be responsible for all sediment control in accordance with Section 2100 – Erosion and Sediment Control.

2.01 FOUNDATION MATERIAL

A. Foundation materials for trench over excavation shall be Class 7 Aggregate Base Course, or “B” stone with Class 7 aggregate cap as designed by the Engineer of Record.

2.02 EMBEDMENT MATERIAL

A. Embedment materials are restricted to materials as described below. The Engineer of Record shall provide as a submittal the gradation sieve analysis of the embedment materials proposed for each specific project.

B. Without regard to the pipe material, all embodiment materials include: bedding, pipe zone

(including haunching), and initial backfill from six (6) inches below the bottom of the pipe to six (6) inches above the top of the pipe the full trench width with a minimum of six (6) inches of embedment materials all around the exterior of the pipe.

C. Special design considerations, including supplemental trench drains, geotechnical fabric, and/or specific aggregate, and/or filter gradations as recommended in AWWA C605 and ASTM D2321 may be required to prevent migration of embedment particles. The Engineer of Record is responsible to design the embedment system as needed for the specific project.

D. Embedment material shall be in accordance with ASTM D 2487, latest edition and shall conform to class 1A embedment materials in accordance with ASTM D 2321, latest edition.

Material shall meet the grading requirements of a “MODIFIED” ASTM C 33, gradation 67, commonly referred to as ASTM #67 (3/4” concrete aggregate or 5/8” aggregate).

Maximum aggregate size shall be 3/4 inch. This includes materials such as crushed stone or rock.

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2.03 GRIT EMBEDMENT MATERIAL

A. Grit shall be the by-product of rock crushing, generally consisting of 1/4” and smaller limestone material.

2.04 AGGREGATE BACKFILL MATERIALS

A. Aggregate material for select backfill across streets, roads, driveways, and for placement of “gravel” or aggregates surfaced areas, shall be Class 7 Aggregate Base Course material conforming to the Standard Specifications of the Arkansas Department of Transportation, latest edition.

2.05 SELECT NATIVE BACKFILL MATERIAL

A. Select native material shall be suitable on-site material or imported good earth, sand, or gravel that is free from large rocks (3” maximum diameter) or hard lumpy materials.

Never use materials of perishable, frozen, spongy, or otherwise unsuitable nature as select material.

3.01 EXCAVATION – GENERAL

A. All excavation shall be carried accurately to the line and grade shown on the Drawings and as established by the Engineer of Record.

B. When excavation is necessary to be carried below or beyond that which is required, fill the over-excavated space with compacted with Foundation Material as approved by the Engineer of Record

C. The Contractor shall use a trench box or provide and install shoring where necessary to protect the labor, the work, or adjacent property. Shoring shall be maintained in place until the backfill has proceeded to a point where it can be safely removed.

D. Dewater all excavations before any construction is undertaken in accordance with Section 2100 of these specifications.

E. Install pipe only in dry trenches. Place concrete upon dry, firm foundation material only.

3.02 DISPOSAL OF EXCAVATED MATERIALS

A. The Contractor shall be responsible for disposal of excess material, or disposal of excavated material unsuitable for backfilling.

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B. Disposal of excess material shall only be allowed on private property with written permission of the owner of the property. A copy of the written permission must be forwarded to the Engineer along with any permits as may be required by the governing authority, city, or county. Grading permits may be required.

3.03 EXPLOSIVES

A. The use of explosives/blasting is not permitted.

3.04 TRENCH DEWATERING

A. Dewater all trenches, in accordance with Section 2100, to the extent that water pipe can be placed on a dry and firm trench bottom. Never place pipe in a wet or unstable trench.

B. Pump, pipe, and drain all water resulting from dewatering operations into a properly designed dewatering structure or device in accordance with Section 2100. Prevent flooding of streets or private property.

C. Soil that cannot be properly dewatered: excavate and install 2” – 3” rock to provide a firm trench bottom.

D. Divert surface runoff water away from the excavation. Where the excavation crosses natural drainage channels, care should be taken to prevent unnecessary damage or delays.

Route diverted surface water into existing drainage structures, such as storm sewers, ditches, or streams. Prevent flooding of streets or private property.

3.05 EXCAVATION – TRENCHES

A. During excavation, all pipe to be replaced shall be removed and disposed of offsite at a suitable landfill. Trench excavation for water lines shall be kept within the maximum width limits as shown on the Drawings. The specified maximum trench width from the bottom of the trench to 24-inches above the outside top of the pipe shall not be exceeded unless specifically authorized by the Engineer.

B. Prior to excavation in paved areas, the Contractor shall saw-cut (or other acceptable method approved by the Engineer) the existing pavement to minimize the destruction of the existing pavement outside the limits of the trench. The maximum trench width for the installation of water lines, up to 12-inches in diameter, in paved areas shall not exceed 36-inches without written approval from Engineer. Contractor is responsible for damage to paved areas by construction equipment outside the limits of trench excavation.

C. If necessary to prevent sliding and caving, cut the trench banks back on a slope above an elevation two (2) feet above the outside top of the pipe to reduce the earth load on the trench sides. Never exceed the specified maximum width until 2 ft. above the outside top of the pipe. See Section 2000 – Trench Safety.

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D. Do not advance trench excavation more than three hundred (300) feet ahead of the completed pipe work and backfill.

E. Standard Trench Widths:

Minimum Outside pipe diameter + 12 inches

Maximum Outside pipe diameter + 24 inches

3.06 EMBEDMENT AND BACKFILLING – GENERAL

A. Install all water pipe using approved embedment materials only.

B. It is essential that the complete backfill be done in such a manner to minimize voids in the backfill.

C. Backfilling includes refilling and consolidating the fill in the excavation up to the surrounding ground surface or road grade.

D. Use select native materials for backfilling in unpaved areas.

E. Use mechanical compaction devices manufactured for that purpose to compact backfill materials in trenches.

F. Use mechanical compaction devices manufactured for that purpose to compact backfill materials in trenches.

3.07 BEDDING AND BACKFILLING PIPE

A. Bed pipe as described below and in accordance with the standard trench details shown in Standard Detail Drawings. The intent of the bedding is to create a uniform support which will protect the pipe from localized stress points and to provide for a well graded trench bottom.

B. Extend the trench excavation to a minimum depth of six (6) inches below the bottom of the pipe.

C. Install bedding materials in no greater than eight (8) inch compacted lifts. Install bedding from six (6) inches below the pipe to six (6) inches above the pipe. Shovel slice bedding beneath the pipe haunches.

D. Provide the following cover for water pipe:

1. Minimum depth to the top of pipe for all water mains lines less than 12-inches diameter shall be 3 feet.

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2. Minimum depth to the top of pipe for water lines 12-inches diameter and greater shall be 4 feet.

3. Minimum depth of all water service lines from the main to the water meter shall be

30-inches.

E. The maximum depth of bury for PVC pipe is sixteen (16) feet. Any depths greater than sixteen (16) feet require ductile iron pipe, unless approved by Washington Water Authority.

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SECTION 3100

CAST-IN-PLACE CONCRETE

A. This section covers cast-in-place concrete materials, reinforcing steel, forms, and finishing in conjunction with water and sewer construction.

B. Use Class B Concrete for all structures.

C. Use Class A Concrete for bedding and blocking only.

1.02 SUBMITTALS

A. Submit mix design, equipment details, and vendor name for field batched concrete.

2.01 CONCRETE

A. Concrete: composed of Portland Cement; fine and coarse aggregate; water; and an air entraining agent. Provide either Class A concrete or Class B concrete as described below.

B. For Class A and Class B concrete use ready-mixed concrete; conform to ASTM C 94, latest edition; deliver and place within one hour after all materials have been placed in the mixing drum.

C. The concrete mix shall be designed so that the proportions will produce results that will meet the requirements of Class A or Class B concrete. Proportion components, except water, by weight. Water may be measured by volume. One sack of Portland Cement consists of one cubic foot or 94 pounds. Proportion components to meet these requirements:

1. Class A Concrete:

a. Maximum net water/cement ratio = 0.49

b. Slump range: 1 - 4 inches

c. Minimum 28-day compressive strength: 3,000 PSI

2. Class B Concrete:

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a. Maximum net water/cement ratio = 0.49

b. Slump range: 1 - 4 inches

c. Minimum 28-day compressive strength: 4,000 PSI

d. Air Content: 4 – 7

D. Before beginning any concrete work, the Contractor shall have the concrete mix designed and the ingredients selected and proportioned by an approved independent testing laboratory meeting the requirements of ASTM E 329. Certified copies of all laboratory trial mix reports shall be sent to the Engineer from the testing laboratory for review. Do not place concrete prior to the Engineer's review and acceptance in writing of the concrete mix design.

E. Cement: Portland Cement conforming to AASHTO M 85, Type I. Use Type III cement

(high early strength) only if approved by the Engineer.

F. Fly ash: Fly ash may be used as a partial cement replacement not exceeding 10% by weight of the cement when approved by Washington Water Authority. When fly ash is used, the total weight of both cement and fly ash will be used in design calculations.

G. Water: potable water free from injurious amounts of acids, alkalis, oils, sewage, vegetable matter and dirt.

H. Air entraining agent: use in all Class B concrete as required; conform to AASHTO M 154;

add to the mixing water in solution; proportion to provide four (4) to seven (7) percent air in the concrete.

I. Fine aggregate: clean, hard, durable particles of natural sand free from injurious amounts of organic impurities; conform to the gradation requirements of AASHTO T 27.

J. Coarse aggregate: clean, hard, and durable crushed stone or washed gravel; reasonably well graded from course to fine; per AASHTO T 27.

2.02 REINFORCEING STEEL

A. Steel bars: deformed, conforming to ASTM A 615 or A 617.

B. Steel wire: conform to ASTM A 82, Cold-Drawn Steel Wire for Concrete Reinforcement.

C. Wire mesh: conform to ASTM A 185; gauge and mesh per plans.

D. Submit reinforcing steel bars shop drawings for approval.

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E. All steel reinforcement: free from rust, scale, mortar, dirt, or other objectionable coatings.

A. Perform excavation per Section 2300 - Excavation, Backfilling, and Compacting.

B. Build forms neat, square, and flat so concrete will have smooth finish when forms are pulled. Construct forms to provide finished concrete to dimensions shown on plans.

C. Place reinforcing steel accurately in accordance with details shown on the plans and properly secure in position.

D. Concrete shall not be placed when the temperature is below 40° F and dropping or below 35° F if the temperature is rising, unless approved by the Engineer.

E. Vibrate all structural concrete as it is placed using internal vibrators capable of transmitting vibration to the concrete at frequencies not less than 4,500 impulses per minute. Do not use form vibrators. Limit vibration to provide satisfactory consolidation without causing segregation. Do not insert vibrator more than six (6) inches into the lower courses previously vibrated. Use vibrators in a substantially vertical position; insert at uniformly spaced points no farther apart than the visible effectiveness of the vibrator.

F. Allow concrete to cure for at least 48 hours before stripping forms. If concrete is in a structural member, do not remove forms until the concrete can withstand safely all superimposed loads.

G. On all exposed surfaces, remove all fins and projections so the surface is smooth. Cut out and fill with grout any honeycombed areas. Extensive honeycombing is not allowable.

H. All concrete shall be properly protected from too rapid curing or from freezing while green. If the weather is hot or dry, all freshly placed concrete shall be covered with a matting or other suitable material and kept moist for at least ten (10) days after pouring, or an approved curing compound may be used with the approval of the Engineer of Record.

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SECTION 4000

WATER PIPE, FITTINGS, AND MATERIALS

A. This section covers the manufacture, transportation, and storage of pipe, pipe joints, fire hydrants, fittings, and other materials for water lines and service lines.

B. Use only materials approved by Washington Water Authority.

A. Use of materials other than those specifically listed below is prohibited.

B. Submit the manufacturer's certificate that the materials meet with these Specification requirements including material testing requirements.

1.03 LEAD-FREE BRASS

A. All brass shall be manufactured in accordance with the Safe Drinking Water Act as amended to be LEAD-FREE brass (< 0.25% Pb).

2.01 HIGH DENSITY POLYETHYLENE (HDPE) PRESSURE PIPE AND TUBING

A. HDPE tubing 3/4 inches through 3 inches in size may be used for service lines and shall be manufactured in accordance with AWWA C901, latest revision. Tubing shall be SDR 9 or SDR 7 depending on pressure conditions. Color shall be black or blue.

B. HDPE pipe 4 inches through 24 inches in size may be used for water mains and shall be manufactured in accordance with AWWA C906, latest revision. Pipe shall be SDR 9 or SDR 7 depending on pressure conditions. Color shall be black or blue. Use of HDPE pipe for water distribution will be considered on a case-by-case basis.

C. Marking on pipe and tubing shall include the following and shall be applied at intervals of not more than 5 ft.

1. Nominal size and diameter base (e.g., ID, OD, IPS, or CTS).

2. SIDR, SDR, or minimum wall thickness.

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3. The manufacturer’s name or trademark.

4. The material designation code

5. The AWWA pressure class

6. The AWWA designation number for this standard (e.g., AWWA C901).

7. The manufacturer’s production (lot) code that includes information such as resin source, manufacturing location, extrusion outlet (line), and manufacturing date.

8. If not included in the manufacturer’s production code, the manufacturing date, including day, month, and year in a recognized standard format. The date format should be readily recognized as a date.

9. The seal or mark of the testing agency that certifies the material.

2.02 POLYETHYLENE ENCASEMENT (PIPE WRAP)

A. Polyethylene encasement shall be in conformance to ANSI/AWWA C105/A21.5, latest revision. The virgin linear low-density polyethylene film shall have a minimum normal thickness of .008 inches (8 mils) and shall be provided in either flat tube or sheet form.

B. The color shall be black with nominal 2% carbon black UV inhibitor and printed per the

AWWA C105 standard.

C. Tape for field taping of polywrapped pipe, fittings, etc. or field repair of missing polyethylene encasement material shall be Polyken #900, Scotchrap #50 or equal, at least 2-inches wide, and installed as per the Polyethylene Encasement Installation Guide published by DIPRA. Duct Tape is not permitted.

D. All buried iron pipe, valves, and fittings shall be double wrapped.

2.03 PIPE RESTRAINTS

A. Bell restraints for AWWA C900 PVC sizes 4-inch through 12-inch shall be Series 1900

Restraint Harness, as manufactured by EBAA Iron, Inc. Devices shall have an approved coating system for corrosion resistance equivalent to MEGA-BOND® and manufacturing traceability.

B. Bell restraints for Ductile Iron Pipe sizes 4-inch…