20240325_2221_Central_Plant_604_RTA_Specs_V6.pdf

Architect’s Seal: JMZ Project No. 2221

25 March 2024

Bid Set #_____

PROJECT

SPECIFICATIONS

AMERICAN WATER STANDARD SPECIFICATIONS

Volume 6 of 6

Upgrade of Central Plant

(Bldg. 604)

THIS PROJECT IS A MILITARY PROGRAM PROCUREMENT AND IS FUNDED BY

THE DEPARTMENT OF DEFENSE. BUY AMERICAN ACT-CONSTRUCTION

MATERIALS (USC Title 41 Subtitle IV Chapter 83) IN ACCORDANCE WITH

FAR 52.225 APPLIES.

THIS PAGE INTENTIONALLY LEFT BLANK

United States Military Academy at West Point

Upgrade of Central Plant (Bldg. 604)

PROJECT TABLE OF CONTENTS Page 1

PROJECT TABLE OF CONTENTS

VOLUME 1

DIVISION 00 - PROCUREMENT AND CONTRACTING REQUIREMENTS

00 01 15 LIST OF DRAWINGS

00 80 00.00 SPECIAL CONTRACT REQUIREMENTS

00 90 10 LIST OF APENDICES

Appendix A Existing Hazardous Material Information

Appendix B Submittal Register

DIVISION 01 - GENERAL REQUIREMENTS

01 11 00 SUMMARY OF WORK

01 14 00 WORK RESTRICTIONS

01 20 00 PRICE AND PAYMENT PROCEDURES

01 30 00 ADMINISTRATIVE REQUIREMENTS

01 32 01.00 10 PROJECT SCHEDULE

01 33 00 SUBMITTAL PROCEDURES

01 35 26 GOVERNMENTAL SAFETY REQUIREMENTS

01 35 73 DELEGATED DESIGN PROCEDURES

01 35 91 PERIOD TREATMENT PROCEDURES

01 45 00.00 10 QUALITY CONTROL

01 45 00.15 10 ELECTRONIC DOCUMENT SUBMITTAL SERVICE (EDSS)

01 45 35 SPECIAL INSPECTIONS

01 50 00 TEMPORARY CONSTRUCTION FACILITIES AND CONTROLS

01 57 19 TEMPORARY ENVIRONMENTAL CONTROLS

01 58 00 PROJECT IDENTIFICATION

01 74 19 CONSTRUCTION WASTE MANAGEMENT AND DISPOSAL

01 78 00 CLOSEOUT SUBMITTALS

01 78 23 OPERATION AND MAINTENANCE DATA

01 78 24.00 10 FACILITY DATA REQUIREMENTS

01 91 00.15 BUILDING COMMISSIONING

VOLUME 2

DIVISION 02 - EXISTING CONDITIONS

02 41 00 DEMOLITION AND DECONSTRUCTION

02 42 91 REMOVAL AND SALVAGE OF HISTORIC CONSTRUCTION MATERIALS

02 81 00 TRANSPORTATION AND DISPOSAL OF HAZARDOUS MATERIALS(HISTORIC

FUEL OIL PRODUCT PIPING)

02 82 00 ASBESTOS REMEDIATION

02 83 00 LEAD REMEDIATION

02 84 16 HANDLING OF LIGHTING BALLASTS AND LAMPS CONTAINING PCBS AND

MERCURY

DIVISION 03 – CONCRETE

03 01 00 REHABILITATION OF CONCRETE

03 30 00 CAST-IN-PLACE CONCRETE

DIVISION 04 – MASONRY

04 03 00 CONSERVATION TREATMENT FOR PERIOD MASONRY

04 20 00 UNIT MASONRY

PROJECT TABLE OF CONTENTS Page 2

DIVISION 05 – METALS

05 03 00 CONSERVATION TREATMENT FOR PERIOD METALS

05 05 23.16 STRUCTURAL WELDING

05 12 00 STRUCTURAL STEEL

05 30 00 STEEL DECKS

05 40 00 COLD-FORMED METAL FRAMING

05 50 13 MISCELLANEOUS METAL FABRICATIONS

05 51 00 METAL STAIRS

05 51 33 METAL LADDERS

05 52 00 METAL RAILINGS

DIVISION 06 - WOOD, PLASTICS, AND COMPOSITES

06 03 00 CONSERVATION TREATMENT FOR PERIOD WOOD

06 10 00 ROUGH CARPENTRY

06 41 16.00 10 PLASTIC-LAMINATE-CLAD ARCHITECTURAL CABINETS

06 61 16 SOLID SURFACING FABRICATIONS

06 83 16 FIBERGLASS REINFORCED PANELING

VOLUME 3

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

07 05 53 FIRE AND SMOKE ASSEMBLY IDENTIFICATION

07 21 13 BOARD AND BLOCK INSULATION

07 21 19 FOAMED-IN-PLACE INSULATION

07 22 00 ROOF AND DECK INSULATION

07 27 10 BUILDING AIR BARRIER SYSTEM

07 27 26 FLUID-APPLIED MEMBRANE AIR BARRIERS

07 31 13 ASPHALT SHINGLES

07 42 13 METAL WALL PANELS

07 52 00 MODIFIED BITUMINOUS MEMBRANE ROOFING

07 60 00 FLASHING AND SHEET METAL

07 72 00 ROOF ACCESSORIES

07 84 00 FIRESTOPPING

07 92 00 JOINT SEALANTS

DIVISION 08 – OPENINGS

08 11 13 STEEL DOORS AND FRAMES

08 14 00 WOOD DOORS

08 16 00 COMPOSITE DOORS

08 31 00 ACCESS DOORS AND PANELS

08 51 13 ALUMINUM WINDOWS

08 63 73 REMOVABLE INSULATED TRANSLUCENT PANEL SKYLIGHTS

08 71 00 DOOR HARDWARE

08 71 06 DOOR HARDWARE SCHEDULE

08 81 00 GLAZING

08 91 00 METAL WALL LOUVERS

DIVISION 09 – FINISHES

09 22 00 SUPPORTS FOR PLASTER AND GYPSUM BOARD

09 29 00 GYPSUM BOARD

09 30 10 CERAMIC, QUARRY, AND GLASS TILING

09 51 00 ACOUSTICAL CEILINGS

09 65 00 RESILIENT FLOORING

09 67 23.13 STANDARD RESINOUS FLOORING

09 90 00 PAINTS AND COATINGS

PROJECT TABLE OF CONTENTS Page 3

09 96 00 HIGH-PERFORMANCE COATINGS

DIVISION 10 – SPECIALTIES

10 11 00 VISUAL DISPLAY UNITS

10 14 00.20 INTERIOR SIGNAGE

10 21 13 TOILET COMPARTMENTS

10 22 13 WIRE MESH PARTITIONS

10 26 00 WALL AND DOOR PROTECTION

10 28 13 TOILET AND LOCKER ROOM ACCESSORIES

10 28 13.11 UNDER-LAVATORY PIPE AND SUPPLY COVERS

DIVISION 11 – EQUIPMENT

11 31 13 ELECTRIC KITCHEN EQUIPMENT

DIVISION 12 – FURNISHINGS

12 24 13 ROLLER WINDOW SHADES

12 50 00.13 10 FURNITURE AND FURNITURE INSTALLATION

VOLUME 4

DIVISION 21 – FIRE PROTECTION

21 13 13 WET PIPE SPRINKLER SYSTEMS, FIRE PROTECTION

DIVISION 22 – PLUMBING

22 00 00 PLUMBING, GENERAL PURPOSE

22 05 48.00 20 MECHANICAL SOUND, VIBRATION, AND SEISMIC CONTROL

22 07 19.00 40 PLUMBING PIPING INSULATION

22 14 29.00 SUMP PUMPS

22 15 14.00 40 GENERAL SERVICE COMPRESSED-AIR SYSTEMS, LOW PRESSURE

22 31 00 WATER SOFTENERS, CATION-EXCHANGE(SODIUM CYCLE)

DIVISION 23 - HEATING, VENTILATING, AND AIR CONDITIONING (HVAC)

23 03 00.00 20 BASIC MECHANICAL MATERIALS AND METHODS

23 05 15 COMMON PIPING FOR HVAC

23 05 48.00 40 VIBRATION AND SEISMIC CONTROLS FOR HVAC PIPING AND EQUIPMENT

23 05 93 TESTING, ADJUSTING, AND BALANCING FOR HVAC

23 07 00 THERMAL INSULATION FOR MECHANICAL SYSTEMS

23 08 00.00 20 COMMISSIONING OF MECHANICAL AND PLUMBING SYSTEMS

23 09 00 INSTRUMENTATION AND CONTROL FOR HVAC

23 09 13 INSTRUMENTATION AND CONTROL DEVICES FOR HVAC

23 09 23.01 LONWORKS DIRECT DIGITAL CONTROL FOR HVAC AND OTHER BUILDING

CONTROL SYSTEMS

23 22 13.35 40 STEAM TRAPS

23 22 23.00 40 STEAM CONDENSATE PUMPS

23 23 00 REFRIGERANT PIPING

23 30 00 HVAC AIR DISTRIBUTION

23 34 23.00 40 HVAC POWER VENTILATORS

23 54 19 BUILDING HEATING SYSTEMS, WARM AIR

23 58 00.00 10 CENTRAL STEAM HEATING AND UTILITIES SYSTEMS

23 81 00 DECENTRALIZED UNITARY HVAC EQUIPMENT

23 82 23.00 40 UNIT VENTILATORS

DIVISION 25 - INTEGRATED AUTOMATION

25 05 11.O1 CYBERSECURITY FOR FACILITY-RELATED CONTROL SYSTEMS

25 05 11.O2 CYBERSECURITY FOR FACILITY-RELATED CONTROL SYSTEMS

PROJECT TABLE OF CONTENTS Page 4

25 08 10 UTILITY MONITORING AND CONTROL SYSTEM TESTING

25 10 10 UTILITY MONITORING AND CONTROL SYSTEM (UMCS) FRONT END AND

INTEGRATION

VOLUME 5

DIVISION 26 – ELECTRICAL

26 05 00.00 40 COMMON WORK RESULTS FOR ELECTRICAL

26 05 19.10 10 INSULATED WIRE AND CABLE

26 05 26.00 40 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

26 05 48.00 10 SEISMIC PROTECTION FOR ELECTRICAL EQUIPMENT

26 05 71.00 40 LOW VOLTAGE OVERCURRENT PROTECTIVE DEVICES

26 05 73 POWER SYSTEM STUDIES

26 08 00 APPARATUS INSPECTION AND TESTING

26 09 23.00 40 LIGHTING CONTROL DEVICES

26 20 00 INTERIOR DISTRIBUTION SYSTEM

26 24 16.00 40 PANELBOARDS

26 28 21.00 40 AUTOMATIC TRANSFER SWITCHES

26 29 23 ADJUSTABLE SPEED DRIVE (ASD) SYSTEMS UNDER 600 VOLTS

26 33 23 EMERGENCY LIGHTING INVERTER

26 51 00 INTERIOR LIGHTING

26 53 00.00 40 EXIT SIGNS

26 56 00 EXTERIOR LIGHTING

DIVISION 27 - COMMUNICATIONS

27 10 00 BUILDING TELECOMMUNICATIONS CABLING SYSTEM

27 21 10.00 40 FIBER OPTIC DATA TRANSMISSION SYSTEM

27 51 23 INTERCOMMUNICATION SYSTEM

DIVISION 28 – ELECTRONIC SAFETY AND SECURITY

28 08 10 ELECTRONIC SECURITY SYSTEM ACCEPTANCE TESTING

28 10 05 ELECTRONIC SECURITY SYSTEMS (ESS)

28 31 66 INTERIOR FIRE ALARM AND MASS NOTIFICATION SYSTEM, NON-

ADDRESSABLE

DIVISION 31 – EARTHWORK

31 00 00 EARTHWORK

31 10 00 SITE CLEARING

31 23 00.00 20 EXCAVATION AND FILL

DIVISION 32 - EXTERIOR IMPROVEMENTS

32 11 23 AGGREGATE BASE COURSES

32 11 26 HOT-MIX BITUMINOUS BASE COURSE FOR ROADS AND STREETS

32 13 13.06 PORTLAND CEMENT CONCRETE PAVEMENT FOR ROADS AND SITE

FACILITIES

32 16 19 CONCRETE CURBS, GUTTERS AND SIDEWALKS

32 17 23 PAVEMENT MARKINGS

32 31 13 CHAIN LINK FENCES AND GATES

32 92 19 SEEDING

DIVISION 33 – UTILITIES

33 30 00 SANITARY SEWERAGE

33 40 00 STORMWATER UTILITIES

PROJECT TABLE OF CONTENTS Page 5

DIVISION 40 - PROCESS INTERCONNECTIONS

40 17 26.00 20 WELDING PRESSURE PIPING

40 17 30.00 40 WELDING GENERAL PIPING

DIVISION 41 – MATERIAL PROCESSING AND HANDLING EQUIPMENT

41 22 13.14 BRIDGE CRANES, OVERHEAD ELECTRIC, TOP RUNNING

41 22 13.19 DAVIT CRANES

VOLUME 6

AMERICAN WATER STANDARD SPECIFICATIONS:

These sections are provided for reference and coordination only.

DIVISION 31 – EARTHWORK

31 23 33 EXCAVATION BACKFILL AND COMPACTION FOR UTILITIES

DIVISION 32 - EXTERIOR IMPROVEMENTS

32 01 00 PAVEMENT REPAIR AND RESTORATION

32 13 13 CONCRETE CURB, DRIVES AND SIDEWALKS

32 92 00 TURF AND GRASSES

DIVISION 33 – UTILITIES

33 05 27 TRACER WIRE

33 11 00 PIPING AND ACCESSORIES - GENERAL PROVISIONS

33 11 00.11 POLYVINYL CHLORIDE (PVC) PIPE

33 11 00.13 HIGH DENSITY POLYETHYLENE (HDPE) PIPE AND FITTINGS

33 11 00.15 DUCTILE IRON PIPE AND FITTINGS

33 31 00.15 SANITARY SEWER LATERALS

-- END OF TABLE OF CONTENTS --

Standard Specifications Excavation and Backfill for Utilities

Revised July 2021 31 23 33-1

SECTION 31 23 33

EXCAVATION BACKFILL AND COMPACTION FOR UTILITIES

PART 1: GENERAL

1.01 SECTION INCLUDES

A. Trench excavation, backfill, and compaction shall include, but not necessarily be limited to, the excavation, backfill, and compaction of trenches for water mains, and sanitary sewers, shown on the Drawings, and in accordance with the AW Standard Specifications and Details.

1.02 DEFINITIONS

A. Pipe Foundation: Suitable and stable native soils that are exposed at trench subgrade after excavation to depth of bottom of bedding as shown on Drawings, or foundation backfill material placed and compacted in over-excavations.

B. Embedment Material/Pipe Bedding: Portion of trench backfill that extends vertically from top of foundation up to level line at bottom of pipe, and horizontally from one trench sidewall to opposite sidewall.

C. Haunching: Material placed on either side of pipe from top of bedding up to springline of pipe and horizontally from one trench sidewall to opposite sidewall.

D. Initial Backfill: Portion of trench backfill that extends vertically from springline of pipe (top of haunching) up to level line 12-inches above top of pipe, and horizontally from one trench sidewall to opposite sidewall.

E. Pipe Embedment Zone: Portion of trench backfill that consists of bedding, haunching and initial backfill.

F. Trench Zone: Portion of trench backfill that extends vertically from top of pipe embedment up to pavement subgrade or up to final grade when not beneath pavement.

G. Unsuitable Material: Unsuitable soil materials are the following:

1. Materials that are classified as ML, CL-ML, MH, PT, OH, and OL according to ASTM D2487.

2. Materials that cannot be compacted to required density due to gradation, plasticity, or moisture content.

3. Materials that contain large clods, aggregates, stones greater than 4-inches in any dimension, debris, vegetation, waste or any other deleterious materials.

Revised July 2021 31 23 33-2

4. Materials that are contaminated with hydrocarbons or other chemical contaminants.

H. Suitable Material: Suitable soil materials are those meeting specification requirements. Materials mixed with lime, fly ash, or cement that can be compacted to required density and meeting requirements for suitable materials may be considered suitable materials, unless otherwise indicated.

I. Backfill: Suitable material meeting specified quality requirements placed and compacted under controlled conditions.

J. Ground Water Control Systems: Installations external to trench, such as well points, eductors, or deep wells. Ground water control includes dewatering to lower ground water, intercepting seepage which would otherwise emerge from side or bottom of trench excavation, and depressurization to prevent failure or heaving of excavation bottom.

K. Surface Water Control: Diversion and drainage of surface water runoff and rain water away from trench excavation. Rain water and surface water accidentally entering trench shall be controlled and removed as part of excavation drainage.

L. Excavation Drainage: Removal of surface and seepage water in trench by sump pumping and using drainage layer, as defined in ASTM D2321, placed on foundation beneath pipe bedding or thickened bedding layer of Class I material.

M. Trench Conditions are defined with regard to stability of trench bottom and trench walls of pipe embedment zone. Maintain trench conditions that provide for effective placement and compaction of embedment material directly on or against undisturbed soils or foundation backfill, except where structural trench support is necessary.

1. Dry Stable Trench: Stable and substantially dry trench conditions exist in pipe embedment zone as result of typically dry soils or achieved by ground water control (dewatering or depressurization) for trenches extending below ground water level.

2. Stable Trench with Seepage: Stable trench in which ground water seepage is controlled by excavation drainage.

a. Stable Trench with Seepage in Clayey Soils: Excavation drainage is provided in lieu of or to supplement ground water control systems to control seepage and provide stable trench subgrade in predominately clayey soils prior to bedding placement.

b. Stable Wet Trench in Sandy Soils: Excavation drainage is provided in embedment zone in combination with ground water control in predominately sandy or silty soils.

Revised July 2021 31 23 33-3

3. Unstable Trench: Unstable trench conditions exist in pipe embedment zone if ground water inflow or high water content causes soil disturbances, such as sloughing, sliding, boiling, heaving or loss of density.

N. Sub-trench: Sub-trench is special case of benched excavation. Sub-trench excavation below trench shields or shoring installations may be used to allow placement and compaction of foundation or embedment materials directly against undisturbed soils. Depth of sub-trench depends upon trench stability and safety as determined by the Contractor.

O. Trench Dam: Placement of low permeability material in pipe embedment zone or foundation to prohibit ground water flow along trench.

P. Over-excavation and Backfill: Excavation of subgrade soils with unsatisfactory bearing capacity or composed of otherwise unsuitable materials below top of foundation as shown on Drawings, and backfilled with foundation backfill material.

Q. Foundation Backfill Materials: Natural soil or manufactured aggregate of controlled gradation, and geotextile filter fabrics as required, to control drainage and material separation. Foundation backfill material is placed and compacted as backfill to provide stable support for bedding. Foundation backfill materials may include concrete seal slabs.

R. Trench Safety Systems: Includes both protective systems and shoring systems.

S. Trench Shield (Trench Box): Portable worker safety structure moved along trench as work proceeds, used as protective system and designed to withstand forces imposed on it by cave in, thereby protecting persons within trench. Trench shields may be stacked if so designed or placed in series depending on depth and length of excavation to be protected.

T. Shoring System: Structure that supports sides of an excavation to maintain stable soil conditions and prevent cave-ins, or to prevent movement of ground affecting adjacent installations or improvements.

U. Special Shoring: Shoring system meeting special shoring as specified in

Paragraph 1.06, Special Shoring Design Requirements, for locations identified on Drawings.

1.03 SCHEDULING

A. Schedule work so that pipe embedment can be completed on same day that acceptable foundation has been achieved for each section of pipe installation, manhole, or other structures.

B. The Contractor shall not excavate more trench in any day than can be completed

Revised July 2021 31 23 33-4

(facility installed and trench backfilled) in the same day, unless by written permission of AW. AW shall be empowered at any time to require the backfilling of open trenches over completed pipe lines if, in their judgment, such action is necessary.

1.04 SUBMITTALS

A. Conform to requirements of Section 01 33 00 - Submittal Procedures.

B. Submit planned typical method of excavation, backfill placement and compaction including:

1. Trench widths

2. Procedures for foundation and pipe zone bedding placement, and trench backfill compaction.

3. Procedures for assuring compaction against undisturbed soil when pre-manufactured trench safety systems are proposed.

C. Submit backfill material sources and product quality information in accordance with requirements of Section – Utility Backfill Materials.

D. Submit trench excavation safety program. Identify by name who will be OSHA competent person for excavations. If special shoring system is to be used, include designs for special shoring meeting requirements defined in Paragraph 1.06, Special Shoring Design Requirements contained herein.

E. Submit record of location of utilities as installed, referenced to survey control points. Include locations of utilities encountered or rerouted. Give stations, horizontal dimensions, elevations, inverts, and gradients.

1.05 TESTS

A. Geotechnical testing and analysis of backfill materials for soil classification and compaction testing during construction shall be provided by the Contractor and performed by an independent, State-certified, testing company approved by AW.

The results of all failing tests shall be communicated to AW immediately. Written results of all tests performed, shall be presented to AW in a timely manner.

B. Perform backfill material source qualification testing in accordance with requirements of Section – Utility Backfill Materials.

C. The Contractor will arrange for all in-place moisture/density testing on the project.

D. Frequency :

Revised July 2021 31 23 33-5

Compaction testing shall be performed on random lifts a minimum of every 300 LF unpaved areas and 100 LF in paved areas unless otherwise approved by the AW Project Manager. AW reserves the right to require re-tests if the initial compaction test fails.

1. If ground water is present, at the discretion of the AW Project Manager, compaction testing shall be increased to every 100 LF in unpaved areas.

2. A minimum of one (1) compaction test per lift shall be performed for all backfill operations with less linear footage than specified in 1.05 D.

3. The testing agency shall determine at the time of testing the location of each compaction test within the specified testing length.

4. As an alternative to the compaction testing frequency specified, the

Contract shall have the option to demonstrate aceptable compaction at the start of the project.

a. At the start of the trenching operation, the Contractor shall demonstrate to the AW representative through the results reported by the accepted testing agency that the compaction density specified can be attained by the compaction equipment and methods the Contractor intends to use.

b. Once the method and equipment has been approved, no substitutions will be permitted without AW’s approval.

c. Additional demonstration of the suitability of the compaction equipment and methods will be required whenever there is a significant change in material characteristics or change in compaction equipment or method.

d. Should testing determine that the required density is not being met, or the material is outside the specified moisture range, the Contractor shall, without additional compensation, reexcavate, rework, and/or recompact the particular layer or section until the required density and/or moisture is attained.

E. Compaction

1. The Contractor shall, in unimproved areas outside the public rights-of-way, compact each trench backfill layer in such a manner as to obtain a dense backfill free of voids and not susceptible to undue settlement or depression. Trench backfill extending to not less than 1-foot in depth above the top of pipe shall be compacted to at least 90% of maximum density at a moisture content within 5% of the optimum in accordance with ASTM D1556 or Nuclear Density testing in accordance with ASTM D6938.

Revised July 2021 31 23 33-6

2. Trench backfill within all rights-of-way of improved or paved areas shall be compacted to at least 95% of maximum density at a moisture content within 5%, or local requirements whichever is more stringent, of the optimum moisture in accordance with ASTM D1556. The final 1-foot of trench backfill to pavement subgrade shall be compacted to at least 95% of maximum density at a moisture content within 5% of the optimum in accordance with ASTM D1556 or Nuclear Density testing in accordance with ASTM D6938.

1.06 SPECIAL SHORING DESIGN REQUIREMENTS

A. Have special shoring designed or selected by Contractor's Professional Engineer registered in the State the project is being completed to provide support for sides of excavations, including soils and hydrostatic ground water pressures as applicable, and to prevent ground movements affecting adjacent installations or improvements such as structures, pavements and utilities. Special shoring may be a premanufactured system selected by Contractor's Professional Engineer to meet project site requirements based on manufacturer's standard design.

B. The requirement for special shoring shall be determined by AW for all excavations within 10-feet of an AW owned asset.

PART 2: PRODUCTS

2.01 EQUIPMENT

A. Perform excavation with hydraulic excavator or other equipment suitable for achieving requirements of this Section.

B. Heavy compaction equipment shall not be used until adequate cover is attained.

in order to prevent damage to pipes, conduits, or ducts.

C. Use trench shields or other protective systems or shoring systems, including special shoring systems as referenced in Paragraph 1.06, which are designed and operated in accordance with all Local, State, and Federal (including OSHA) standards and regulations.

2.02 MATERIAL CLASSIFICATIONS

A. Embedment and Trench Zone Backfill Materials: Conform to classifications and product descriptions of Section – Utility Backfill Materials.

B. Concrete Encasement: Concrete used for encasement or caps shall have a minimum compressive strength of 3,000 psi.

C. Concrete Backfill: Also known as flowable fill. Flowable fill must be “excavatable” as defined by the National Ready Mixed Association as having a compressive strength not exceeding 150 psi.

Revised July 2021 31 23 33-7

D. Concrete for Trench Dams: Concrete backfill or 3 sack premixed (bag) concrete.

PART 3: EXECUTION

3.01 STANDARD PRACTICE

A. Install flexible pipe, including "semi-rigid" pipe, to conform to standard practice described in ASTM D2321, and as described in this Section. Where an apparent conflict occurs between standard practice and requirements of this Section, this Section governs.

B. Install rigid pipe to conform to standard practice described in ASTM C12, and as described in this Section. Where an apparent conflict occurs between standard practice and requirements of this Section, this Section governs.

3.02 PREPARATION

A. Maintain barricades and warning lights for streets and intersections affected by

Work, and that are considered hazardous to traffic movements as specified in the approved traffic control plan for the project.

B. It is the Contractor’s responsibility to obtained all required permits for excavation to include a Traffic Control Plan approved by the local governing authority.

C. Perform work to conform to applicable safety standards and regulations, as outlined in current OHSA , State and local regulations

D. Immediately notify agency or company owning any existing utility line which is damaged, broken, or disturbed. Obtain approval from AW Project Manager and agency for any repairs or relocations, either temporary or permanent.

E. Remove existing pavements and structures, including sidewalks and driveways, to conform to local (local, State DOT, DPW, CE, etc.) requirements

F. Install and operate necessary dewatering and surface-water control measures.

Provide stable trench to allow installation in accordance with Specifications.

G. Maintain permanent benchmarks, monuments, and other reference points.

Unless otherwise directed in writing, at the expense of the Contractor a Licensed Surveyor shall replace those which are damaged or destroyed in accordance with the requirements of the AW and local or State requirements.

3.03 CRITICAL LOCATION INVESTIGATION

A. Horizontal and vertical location of various underground lines shown on Drawings, including but not limited to water lines, gas lines, storm sewers, sanitary sewers, telecommunication lines, electric lines or power ducts, pipelines, concrete and

Revised July 2021 31 23 33-8 debris, are based on best information available but are only approximate locations.

B. The Contractor is responsible for coordinating all utility locates within the Limits of Disturbance per the standard procedures for the project location (One call system, DPW, CE, Utility Company Coordination, etc.)

C. The Contractor is responsible for verifying the location of existing utilities in manner that complies with all local, State and Federal regulations. Use extreme caution and care when uncovering these lines.

D. Notify AW Project Manager in writing immediately upon identification of obstruction.

E. Notify involved utility companies of date and time that investigation excavation will occur and request that their respective utility lines be marked in field. Comply with utility or pipeline company requirements that their representative be present during excavation. Provide AW Project Manager written 48 hours notice prior to field excavation or related work.

3.04 PROTECTION

A. Protect trees, shrubs, lawns, existing structures, and other permanent objects outside of grading limits and within grading limits as designated on Drawings.

B. Protect and support above-grade and below-grade utilities which are to remain.

C. Restore damaged permanent facilities to a condition equal to or better than pre-construction conditions unless replacement or abandonment of facilities is indicated on Drawings.

D. Take measures to minimize erosion of trenches. Do not allow water to pond in trenches. Where slides, washouts, settlements, or areas with loss of density or pavement failures or potholes occur, repair, recompact, and pave those areas at no additional cost to AW.

E. Protection of Property and Structures: The Contractor shall be responsible for all damage and assume all expense for direct or indirect injury caused by his work, to above ground facilities or below ground facilities shown on the Drawings. The Contractor shall, at his own expense, sustain in place and protect from direct or indirect injury all existing facilities in the vicinity of the excavation, whether above or below the ground, or that may appear in the trench. The Contractor shall be responsible for the implementation of protective measures associated with the presence or proximity of pipes, poles, tracks, walls, buildings, property markers, and other structures and property of every kind and description in or over his trenches or in the vicinity of his work whether above or below the surface of the ground.

Revised July 2021 31 23 33-9

3.05 EXCAVATION

A. Except as otherwise specified or shown on Drawings, install underground utilities in open cut trenches with vertical sides.

B. Perform excavation work so that pipe, conduit, and ducts can be installed to depths and alignments shown on Drawings. Avoid disturbing surrounding ground and existing facilities and improvements.

C. Trenches shall be wide enough to allow for compaction equipment.

D. Use sufficient trench width or benches above embedment zone for installation of well point headers or manifolds and pumps where depth of trench makes it uneconomical or impractical to pump from surface elevation. Provide sufficient space between shoring cross braces to permit equipment operations and handling of forms, pipe, embedment and backfill, and other materials.

E. Upon discovery of unknown utilities, badly deteriorated utilities not designated for removal, or concealed conditions notify AW Project Manager immediately

F. Trench Support:

1. The Contractor shall support the sides and ends of all excavations wherever necessary with braces, sheeting, shoring or stringers, trench boxes, or other acceptable excavation support systems. All timbering shall be installed by persons skilled in such work and shall be so arranged that it may be withdrawn as backfilling proceeds, without injury to the utility or structure constructed or to any roadbed or adjacent structure or property.

2. All work shall be performed in accordance with the latest OSHA requirements.

3. All timbering in excavations, trench boxes, or excavation support systems shall be withdrawn as the backfilling is being done, except where and to such extent as the AW Project Manager shall order in writing that said timbering or excavation support system be left in place or where the AW Project Manager permits the trench support to be left in place at the Contractor's expense and upon his request. The Contractor shall cut off any sheeting left in place 2 feet below finished grade and shall remove the material cut off without compensation therefore.

4. The support of the trench shall be the sole responsibility of the

Contractor.

5. Removal or Moving of trench shoring shall be performed so that pipe, and backfill materials, after placement and compaction, are not damaged nor

Revised July 2021 31 23 33-10 disturbed, nor degree of compaction reduced. Re-compact after shoring is moved if soil is disturbed.

6. The Contractor shall coordinate and provide safe access at all times to all inspecting and testing activities for AW and AW-authorized representatives.

3.06 HANDLING EXCAVATED MATERIALS

A. Use only excavated materials, which are suitable as defined in this Section and conforming to Section – Utility Backfill Materials. Place material suitable for backfilling in stockpiles per the most current OSHA standards.

B. When required, provide additional backfill material conforming to requirements of

Section – Utility Backfill Materials.

C. Stockpile locations shall be pre-approved by the AW Project Manager and the local governing authority.

D. All excavated material not used as backfill the same day as excavated shall be removed from the site and/or stockpiled in an area pre-approved by the AW Project Manager.

3.07 TRENCH FOUNDATION

A. The Contractor shall, before any pipe or appurtenance is installed, fill all unauthorized depressions or irregularities in the bottom of the trench or tunnel with firmly compacted embankment or other approved material.

B. It shall be the Contractor's responsibility to adequately control water that may be present in the excavation. Contractor shall provide for the disposal of water removed from excavations in such a manner not to cause damage to public or private property or to any portion of the Work completed or in progress or cause any impediment to the use of any area by the public. Nor shall the Contractor discharge any flushing or ground water or any material of any nature into existing sanitary sewer system during construction of the facilities. All water shall be discharged through an approved sediment control device and in compliance with NPDES and SPDES discharge requirements.

C. Notify AW Project Manager immediately when unsatisfactory material is encountered on trench bottom. With AW approval, up to 12 -inches of additional undercut may be permitted to achieve suitable trench bottom. If the additional undercut does not result in a satisfactory trench bottom, the Contractor shall obtain a bedding design prepared by a Geotechnical Engineer licensed in the State in which the project is being constructed.

Revised July 2021 31 23 33-11

D. Perform over excavation, if directed by AW Project Manager, in accordance with Paragraph 3.07.C above. Removal of material maybe required. Even though Contractor has not determined material to be unsuitable.

E. Trench dams shall be installed as determined by the AW Project Manager when ground water is encountered.

3.08 PIPE EMBEDMENT, PLACEMENT, AND COMPACTION

A. The following material shall be used for the pipe embedment zone (bedding, haunching, and initial backfill) based on project location.

Location

Water Main & Sanitary Force Main

Gravity Sewer

DIP PVC HDPE

Alabama (Fort Rucker)

Native Material Native Material Native Material Native Material

Illinois (Scott AFB)

Class II, Type A Class II, Type A Class II, Type A Class II, Type A

Kansas (Fort

Leavenworth)

3/8” to 3/4” minus stone/washed gravel

3/8” to 3/4” minus stone/washed gravel

3/8” to 3/4” minus stone/washed gravel

3/8” to 3/4” minus stone/washed gravel

New York (West Point)

AASHTO #9 (3/8”

stone/washed

AASHTO #9 (3/8”

stone/washed

AASHTO #9 (3/8”

stone/washed

AASHTO #9 (3/8”

stone/washed

Louisiana (Ft Polk)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

Maryland (Ft Meade)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

Oklahoma (Fort Sill)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

Texas (Fort Hood &

Joint Base San Antonio)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel) Sand

AASHTO #9 (3/8”

stone/washed gravel)

Virginia (Fort AP Hill & Fort Belvoir)

VDOT 21a or 21b VDOT 21a or 21b VDOT 21a or 21b VDOT 57 or 68

Revised July 2021 31 23 33-12

Utah (Hill Air Force

Base)

2" stone/washed gravel

3/4" stone/washed gravel

3/4" stone/washed gravel

2" stone/washed gravel

California (Vandenberg Air

Force Base)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

Missouri (Fort Leonard

Wood)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

New Jersey (Picatinny Arsenal)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

Ohio (Wright-Pat Air Force Base)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

AASHTO #9 (3/8”

stone/washed gravel)

Washington (Joint Base

Lewis-McChord)

AASHTO #57 (1

1/2” stone/washed gravel)

AASHTO 57 (1 1/2”

stone/washed gravel)

AASHTO 57 (1

1/2” stone/washed gravel)

AASHTO 57 (1

1/2” stone/washed gravel)

B. Remove loose, sloughing, caving, or otherwise unsuitable soil from bottoms and sidewalls of trenches immediately prior to placement of embedment materials.

C. Place embedment including bedding, haunching, and initial backfill as shown on

Drawings.

D. For pipe installation, manually spread embedment materials around pipe to provide uniform bearing and side support when compacted. Protect flexible pipe from damage during placing of pipe zone bedding material. Perform placement and compaction directly against undisturbed soils in trench sidewalls, or against sheeting which is to remain in place.

E. Do not place trench shields or shoring within height of embedment zone unless means to maintain density of compacted embedment material are used. If moveable supports are used in embedment zone, lift supports incrementally to allow placement and compaction of material against undisturbed soil.

F. Place geotextile to prevent particle migration from in-situ soil into open-graded

(Class I) embedment materials or drainage layers.

G. Do not damage coatings or wrappings of pipes during backfilling and compacting operations. When embedding coated or wrapped pipes, do not use crushed stone or other sharp, angular aggregates.

H. Place haunching material around pipe and compact per the pipe manufacture’s recommendation to provide uniform bearing and side support. The haunching shall be installed in a manner that prevents the pipe from moving.

I. Place electrical conduit, if used, directly on foundation without bedding.

Revised July 2021 31 23 33-13

J. The method of compaction of the embedment zone material shall comply with the pipe manufacture’s recommendation. Water tamping is not allowed.

3.09 TRENCH ZONE BACKFILL PLACEMENT AND COMPACTION

A. Place backfill for pipe or conduits and restore surface as soon as practicable.

Leave only minimum length of trench open as necessary for construction.

B. For water and sewer lines under existing pavement, use an aggregate base backfill up to the pavement base or sub grade. Aggregate base shall meet the specifications of and be installed per the Department of Transportation regulations for the State in which the project is located.

C. Unless otherwise shown on Drawings, for trench excavations not under pavement, random backfill of suitable material may be used in trench zone.

1. Clay Soils may be used as trench zone backfill outside paved areas.

2. Place in maximum 8-inch thick lift.

3. Compact per Paragraph 1.05 of this specification section.

4. Moisture content as necessary to achieve density.

D. For electric conduits, remove form work used for construction of conduits before placing trench zone backfill.

3.10 MANHOLES, JUNCTION BOXES AND OTHER PIPELINE STRUCTURES

A. Manholes, junction boxes and other pipeline structures shall have bedding consisting of a minimum of 1’ compacted ¾” to 1” clean stone. The compacted ¾” to 1” stone shall be installed horizontally out from the base to the limits of the excavation (minimum 1’), and extend up to a minimum of 1’ above the pipe or base, whichever is greater (does not include the upper connection of a drop inlet). The stone shall be installed to a uniform depth around the entire perimeter of the structure. The remainder of the backfill shall be installed per section 3.09 Trench Zone Backfill Placement and Compaction to include paved and unpaved area requirements.

3.11 DISPOSAL OF EXCESS MATERIAL

A. Dispose of excess materials in accordance with requirements of the contract documents, State and local requirements.

END OF SECTION 31 23 33

Pavement Repair and Restoration

Revised June 2013 32 01 005-1

SECTION 32 01 00

PAVEMENT REPAIR AND RESTORATION

PART 1 GENERAL

1.01 SECTION INCLUDES

A. Repairing and resurfacing streets, highways, driveways, and other pavements that have been removed, cut, broken, or otherwise damaged during construction.

1.02 SUBMITTALS

A. Contractor shall submit material certif ications, along with supporting data, from the paving materials suppliers stating that the materials conform to State and/or local DPW paving specifications.

PART 2 PRODUCTS

2.01 MATERIALS

A. Subgrade:

1. Provide backfill material as required by Specification Section 31 23 33 – Excavation and Backfill for Utilities.

2. Provide material for stabilization as required.

B. Base: Provide base material as required by State and/or local DPW paving specifications.

C. Pavement: Provide paving materials as required by State and/or local DPW standards.

PART 3 EXECUTION

3.01 PREPARATION

A. Notify AW prior to commencement of excavation in pavement for which a Dig Permit has been obtained. Follow directions contained in the permit.

B. Where directed by AW, Contractor shall saw cut pavement 18-inches wider than width of trench needed to install utilities unless otherwise indicated on Drawings.

C. Protect edges of existing pavement to remain from damage during removals, utility placement, backfill, and paving operations. For concrete pavement, Revised June 2013 32 01 005-2 protect undisturbed subgrade that is to remain to support replacement slab.

D. Dowel in existing concrete pavement where no reinforcement is found or is broken due to construction activities. Unless otherwise directed by AW Project Manager, provide No. 6 bars 24-inches long, drilled and embedded 8-inches into center of existing slab with epoxy grout. Space dowels to match new pavement reinforcement spacing.

E. Provide transitional paving and earthwork as required to tie proposed pavement to existing pavement when unable to dowel new pavement into existing pavement.

3.02 INSTALLATION

A. Temporary paving, or other appropriate material, must be maintained until replaced by permanent paving.

B. All paving removed or damaged by construction operations shall be replaced in kind and/or repaired as specified herein.

C. All pavement work shall meet the requirements of the State and/or local DPW for replacement of paving over all excavated and disturbed areas of the improved surface.

D. Parking Areas, Service Drives, and Driveways: Replace with material equal to or better than existing or as indicated on Drawings. Conform to applicable requirements of sections referenced in Paragraph 2.01, Materials.

E. Street Pavements and Curbs, Sidewalks, Curbs and Gutters: Replace subgrade, base, and surface course with like materials or as indicated on Drawings. Curbs and curbs and gutters shall match existing. Conform to requirements of sections referenced in Paragraph 2.01, Materials. All joints between existing curb or sidewalk and replacement work shall be saw cut at right angles and neatly trimmed. Provide ½-inch thich premolded expansion joint material between old and new joints.

F. At joints between existing pavements and repaving work, the edges of existing pavements shall be cut back parallel with the trench at right angles, neatly trimmed, and approved by AW. An application of asphalt cement shall be provided at all locations where new pavement joins existing pavement.

G. For concrete pavement, install size and length of reinforcing steel and pavement thickness indicated on Drawings. Place types and spacing of joints to match existing or as indicated on Drawings.

H. Where existing pavement consists of concrete pavement with asphaltic surfacing, resurface with minimum 2-inch depth asphaltic pavement or match existing pavement up to 4-inches in thickness.

I. Repair State highway and county crossings in accordance with applicable permit or county requirements as appropriate and within 1 week after utility work is installed.

3.03 WASTE MATERIAL DISPOSAL

A. Dispose of waste materials off site, in accordance with requirements of the

Revised June 2013 32 01 005-3

Contract Documents, State and local regulations.

A. Maintain pavement in good condition until completion of Work.

B. Replace pavement damaged by Contractor's operations at no cost to AW.

3.05 TESTING

A. Obtain a minimum of one 6” diameter core sample for each 500 linear feet of permanent paving for test of depth of bituminous material courses.

B. Take core samples at locations as directed by AW after final compaction rolling.

C. Paving areas shown to be deficient by more than ¼” from the specified depth in any one sample, or uniformly more than 1/8” in three or more samples, shall be removed and replaced to the correct depth at the Contractor’s expense.

D. Refill and compact test holes with material acceptable to, and under the direction of, AW.

END OF SECTION 32 01 00

Standard Specifications Concrete Curbs, Drives, and Sidewalks

Revised January 2016 32 13 13-1

SECTION 32 13 13

CONCRETE CURBS, DRIVES, AND SIDEWALKS

1.01 SCOPE

The work under this section shall include the installation of all concrete curbs, sidewalks, and drives. Installation will include new installations as required on the drawings, and replacement of all curbs, drives and sidewalks damaged or removed incidental to construction. Adhere to most stringent requirements between local regulations and this specification concerning concrete installations for work performed on property owned by others (the municipality or private owners other than AW).

2.01 CONCRETE

A. All concrete shall conform to the following: ASTM C150 Type I Portland cement, 3,000 psi design mix, with a 4-inch + air-entrained slump ready mixed in accordance with ASTM C94.

B. Aggregate shall conform to ASTM C33, which is clean, hard, durable, screened, crushed stone or gravel. The aggregate shall contain no chert.

2.02 REINFORCEMENT

As needed to meet or exceed existing conditions or as specified in these contract Documents.

2.03 CURING COMPOUND

Curing compound shall conform to the specifications of AASHTO M148, Type II, clear, and shall consist of a practically colorless impervious liquid which will thoroughly seal the surface of the concrete and will not impart a slippery surface thereto. The quality and the quantity to be used shall be approved by AW. The use of any material which would impart a slippery surface to the concrete or alter its natural color will not be permitted. The colorless, impervious compound shall contain not less than twenty-five percent (25%) solids. Admixtures applied to concrete with reinforcing steel require review and approval by AW before use.

2.04 PROTECTION

Immediately upon finishing the concrete, the concrete shall be completely covered with plastic or alternate material approved by AW. Canvas or wetted straw will not be

Revised January 2016 32 13 13-2 allowed as alternate coverings for curing.

3.01 CONCRETE CURBS

A. All base for the installation shall be thoroughly compacted to support curb installation. Expansion joints should be provided at a minimum of every 12 feet.

B. All new curb installations shall be as shown on the Drawings, and as detailed on the detail sheets.

C. All replacement curbs shall be of the same type and thickness as the curb and gutter which it abuts. The grade of the restored curb and gutter shall conf orm with the grade of the existing adjacent curb and gutter, and installed to insure there is no ponding of water.

D. The finish shall be a broom finish.

3.02 CONCRETE DRIVEWAYS

A. All base for the installation shall be thoroughly compacted and leveled to support the new and replacement installations without settlement. Expansion joints should be provided at a minimum of every 30 feet.

B. All new driveways shall be installed as shown on the plans, and as detailed on the detail sheets.

C. All permanent restoration of driveways shall conform to the construction as originally placed and to the original lines and grades, unless directed otherwise by AW.

1. No patching of concrete driveway areas will be allowed between joints or dummy joints.

2. All joints shall be saw cut.

3. In no case shall the thickness of a concrete driveway be less than 4-inches, with 6x6x6 welded wire mesh.

D. The finish shall be a broom finish.

3.03 CONCRETE SIDEWALKS

Revised January 2016 32 13 13-3

A. All base for the installation of sidewalks shall be thoroughly compacted and leveled to support the new and replacement installations without settlement.

Expansion joints should be provided at a minimum of every 30 feet.

B. All new sidewalks shall be installed as shown on the Drawings and as detailed on the detail sheets.

1. Sidewalks shall have a minimum thickness of 4-inches, with 6x6x10/10 wire mesh.

2. All sidewalks shall slope 1/4 inch per foot across the width of the walk toward the street.

3. The finish shall be a broom finish at right angles to the walkway.

4. Dummy expansion grooves shall be marked on the sidewalk at five foot intervals. The grooves shall be 1/2 inch deep by 3/8 inch in width.

5. Sawed grooves will not be permitted.

C. All permanent restoration of sidewalks shall conform to the manner of construction as originally constructed and placed (brick, block or stone). All concrete or mortar place shall mimic the aged appearance of the existing areas concrete.

1. When concrete sidewalks are replaced, the replacements shall match the existing line and grades, and width.

2. All replacement work shall meet the requirements of new sidewalk construction. No patching will be allowed between joints or dummy joints.

3. If a curing compound is employed, it shall be applied per the manufacturer's direction and at a recommended rate of application. If unknown, it shall be applied at 1 gallon (3.79 liters) per 200 square feet

(18.58 square meters) for each coat. Surfaces damaged by construction operations during curing shall be resprayed at the same rate.

All concrete work shall be protected by barricades, lights, etc. to protect the concrete until set-up.

END OF SECTION 32 13 13

Turf and Grasses

SECTION 32 92 00

TURF AND GRASSES

Part 1: GENERAL

1.01 DESCRIPTION

Restore all disturbed grass and landscaped areas to conditions equal to or better than before the work began and to the satisfaction of AW.

1.02 SUBMITTALS

A. Manufacturer’s product data:

1. Complete materials list of all materials proposed to be furnished and installed under this section

2. Specifications and other data required to demonstrate compliance with the specified requirements.

B. Pre-Construction Photos

1. Provide pre-construction photos of the existing conditions prior to disturbance of proposed areas of construction.

1.03 GUARANTEE

A. If a satisfactory stand of lawn/grass has not been produced, the Contractor shall renovate and reseed the lawn and unsatisfactory portions thereof immediately or during the next planting season if proper weather conditions do not exist for germination. A satisfactory stand is defined as a section of lawn that has:

1. No bare spots larger than 3 square feet.

2. Not more than 10 percent of total area with bare spots larger than 1 square foot.

B. Disturbed areas that will be exposed in excess of 10 days shall be temporarily mulched until proper weather conditions exist for establishment of permanent vegetative cover.

1.04 All areas disturbed will have erosion controls in place during and after all construction efforts and until permanent restorations are completed and approved. BMPs to be maintained daily and modified as site conditions change. SWPP reports logging

Revised December 2014 32 92 00-1 changes in BMP controls, bi-weekly and weather driven inspections and modifications are to be submitted with daily reports. Refer to the Oklahoma Department of

Environmental Quality OKR10, for requirements applicable for ground stabilization methods.

1.05 All areas that have been disturbed by construction activities shall be returned to equal or better conditions by the use of Solid Slab Sod, Seeding, or Hydro-Mulching to achieve substantial 70% coverage over the entire disturbed area to the satisfaction of AW, State, and other Local Authorities.

1.06 Restore and replace shrubbery, fencing, or other disturbed surfaces or structures to conditions equal to or better that before the work began and to the satisfaction of AW.

2.01 TOPSOIL

Topsoil shall not contain more than 40 percent clay in that portion passing a No. 10 sieve. Topsoil shall contain between 4 percent and 20 percent organic matter as determined by loss on ignition of samples oven-dried to constant weight at 212°F.

2.02 FERTILIZER

Provide a commercial fertilizer consisting of the standard materials of the grade…