IFB_6100_CLMC1170_TECH_DOC_v1.pdf

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CITY OF AUSTIN

Capital Delivery Services

PROJECT MANUAL

Contract Documents and Technical Specifications

VOLUME 2 of 4

Hornsby Bend Biosolids Management Plant

Headworks Improvements

C.I.P. PROJECT NUMBER: 3164.075

SOLICITATION NUMBER: CLMC1170

CITY OF AUSTIN

Austin Water

PO Box 1088

Austin, Texas 78767

Bidding Requirements, Contract Forms and Conditions of the Contract

Table of Contents

Rev. Date 06/01/2026 Table of Contents Page 1 of 7

Document Number

Date Title

VOLUME 1

Cover Sheet

06/01/2026 Table of Contents

03/13/2026 Seal Sheets (Volume 1 only)

BIDDING REQUIREMENTS, CONTRACT FORMS, & CONDITIONS OF THE CONTRACT

00020 09/21/2023 Invitation for Bids 00100 09/21/2023 Instructions to Bidders 00220 03/30/2018 Geotechnical Data 00220 10/18/2018 Geotechnical Data – Final Report

09/01/2021 Lump Sum Bid Form 00300 04/03/2020 Total Bid Form

00400 10/10/2022 Statement of Bidder’s Experience 00405 03/30/2018 Certificate of Non-Suspension or Debarment 00410 01/12/2026 Statement of Bidder’s Safety Experience 00440 09/01/2025 Prohibited Activities 00500 02/04/2020 Agreement (SAMPLE) 00610 02/04/2020 Performance Bond 00620 02/04/2020 Payment Bond 00630 10/22/2019 Non-Discrimination and Non-Retaliation Certificate 00631 03/30/2018 Title VI Assurances Appendix A 00632 03/30/2018 Title VI Assurances Appendix E 00650 06/08/2018 Certificate of Insurance 00670 01/11/2019 Sales Tax Exemption Certificate 00680 03/30/2018 Non-Use of Asbestos Affidavit (Prior to Construction) 00681 03/30/2018 Non-Use of Asbestos Affidavit (After Construction) 00700 10/03/2025 General Conditions 00810 02/08/2023 Supplemental General Conditions 00819 03/07/2017 Security Requirements SP1070 10/24/2019 Facility Security Procedure for Contractors 00830 10/01/2025 Wage Rates and Payroll Reporting 00830BC 06/01/2026 Wage Rates Building Construction Trades 00830HH 01/12/2026 Wage Rates Highway Heavy 0830WT 10/01/2023 Wage Rates and Payroll Reporting 00840 05/30/2025 Construction Training Program Requirements

00900 05/10/2021 Addendum (SAMPLE)

Rev. Date 06/01/2026 Table of Contents Page 2 of 7

SPECIFICATIONS

Division 1 - General Requirements

01010 08/28/2020 Summary of Work 01015 03/05/2026 Construction Coordination and Sequencing 01020 03/30/18 Allowances 01025 09/19/2023 Measurement, Payment, and Schedule of Values 01030 03/30/18 Alternates 01050 10/19/15 Grades Lines & Levels 01095 07/21/03 Reference Standards and Definitions 01200 05/06/2022 Project Meetings 01300 05/06/2022 Submittals

01300.1 06/11/2024 Deviation Request Form

01300.2 06/11/2024 Sample Marked-Up Specification

01300.3 06/11/2024 Sample Transmittal Form

01300.4 06/11/2024 Administratively Complete – Submittal Checklist

01300.5 06/11/2024 Administratively Complete – O&M Checklist 01352 06/29/18 Sustainable Construction Requirements 01353 04/29/2020 Construction Equipment Emissions Reduction Plan 01380 04/14/2023 Construction Photography & Videos 01500 05/09/2025 Temporary Facilities 01505 08/12/19 Construction and Demolition Waste Management 01510 06/29/18 Construction Indoor Air Quality Management Plan 01550 08/09/12 Public Safety and Convenience 01650 04/17/26 Equipment Testing and Facilities Startup 01670 04/30/14 Austin Water Training Requirements 01670A 04/30/14 Training Summary 01710 12/19/11 Final Cleaning 01730 03/31/14 Operation and Maintenance Data 01900 03/12/12 Prohibition of Asbestos Containing Materials 01900a 06/05/06 Statement of Non-Inclusion of Asbestos Containing Material (E/A

Prior to Design) 01900b 06/05/06 Statement of Non-Inclusion of Asbestos Containing Material (E/A

After Design) 01901 06/11/2024 Contaminated Soil and Groundwater

Rev. Date 06/01/2026 Table of Contents Page 3 of 7

VOLUME 2

Cover Sheet 06/01/2026 Table of Contents

City Standard Technical Specifications

Series 100 – Earthwork

101S 03/25/2021 Preparing Right-of-Way 104S 09/26/2012 Removing Portland Cement Concrete 111S 09/26/2012 Excavation 130S 09/26/2012 Borrow

Series 200 – Subgrade and Base Construction

201S 06/17/2021 Subgrade Preparation 210S 02/24/2010 Flexible Base

Series 300 – Street Surface Courses

312S 09/26/2012 Seal Coat

Series 400 – Concrete and Structures

401S 09/26/2012 Structural Excavation and Backfill 402 09/13/2022 Controlled Low Strength Material 403 04/14/2025 Concrete for Structures 405 09/13/2022 Concrete Admixtures 406S 09/26/2012 Reinforcing Steel 408S 11/13/2007 Concrete Joint Materials 409S 11/13/2007 Membrane Curing 410S 09/14/2021 Concrete Structures 411S 11/13/2007 Surface Finishes for Concrete 413S 11/13/2007 Cleaning and/or Sealing Joints and Cracks (PC Concrete) 416S 11/13/2007 Waterstops 430S 11/15/2011 P.C. Concrete Curb and Gutter 439S 11/13/2007 Parking Lot Bumper Curbs

Series 500 – Pipe and Appurtenances

506 02/22/2021 Manholes 508S 02/24/2010 Miscellaneous Structures and Appurtenances 509S 09/26/2012 Excavation Safety Systems 510 06/02/2025 Pipe 511 03/10/2025 Water Valves

Series 600 – Environmental Enhancement

604S 06/17/2021 Seeding for Erosion Control 628S 12/31/2013 Sediment Containment Dikes 633S 11/26/2001 Landgrading 641S 03/25/2021 Stabilized Construction Entrance 642S 09/01/2011 Silt Fence 648S 03/01/2022 Mulch Sock

Rev. Date 06/01/2026 Table of Contents Page 4 of 7

Series 700 – Incidental Construction

700S 09/26/2012 Mobilization 720S 09/26/2012 Metal for Structures 721S 09/26/2012 Steel Structures 723 09/26/2012 Structural Welding

Series 800 – Urban Transportation 802S 09/14/2021 Project Signs 860S 09/26/2012 Pavement Marking Paint

Special Provisions to City Standard Technical Specifications SP401S 06/26/2025 Structural Excavation and Backfill SP403 06/26/2025 Concrete for Structures SP406S 06/26/2025 Reinforcing Steel SP410S 06/26/2025 Concrete Structures SP506 02/20/2026 Manholes SP510 04/08/2026 Pipe

SP720S 06/26/2025 Metal For Structures SP16120 06/11/2024 480 V Motor Control Center SP16200 06/11/2024 Wires, Conductors and Cable – 600V and Below SP16210 06/11/2024 Emergency Generator Set SP16460 06/11/2024 Dry Type Transformers – 600 Volts and Below SP16550 06/11/2024 Grounding SP17000 06/11/2024 Process Instrumentation and Control System SP17200 03/04/2026 Instrument and Control Cabinets and Associated Equipment SP17370 06/11/2024 Mechanically Activated Level Switches SP17600 06/11/2024 Programmable Logic Controllers (PLCs) and Operator Interface Units

(OIUs) SP17620 06/11/2024 Fiber Optic & Ethernet Communication Equipment SP17640 06/11/2024 Workstations & Laptops

VOLUME 3

Cover Sheet 06/01/2026 Table of Contents

Special Specifications Division 2 – Site Work

02316 06/26/2025 Geofoam Fill 02732 06/26/2025 Selective Demolition

Division 3 – Concrete

03600 06/26/2025 Grout 03740 06/26/2025 Concrete Repair and Modifications

Division 4 – Masonry

04200 06/26/2025 Concrete Unit Masonry

Division 5 – Metals

05051 06/26/2025 Anchor Bolts 05311 06/26/2025 Steel Decking 05500 06/26/2025 Miscellaneous Metal Fabrications 05521 06/26/2025 Metal Railings

Rev. Date 06/01/2026 Table of Contents Page 5 of 7

05530 06/26/2025 Metal Gratings and Cover Plates 05540 06/26/2025 Metal Ladders, Platforms & Stairs

Division 6 – Wood and Plastics

06100 06/26/2025 Rough Carpentry

Division 7 – Thermal and Moisture Protection

07115 06/26/2025 Bituminous Dampproofing 07211 06/26/2025 Foamed in Place Insulation 07620 06/26/2025 Sheet Metal Flashing and Trim 07920 06/26/2025 Joint Sealants

Division 8 – Doors and Windows

08100 06/26/2025 Hollow Metal Doors and Frames 08161 06/26/2025 Fiberglass Doors 08330 06/26/2025 Rolling Service Doors 08700 06/26/2025 Door Hardware

Division 9 – Finishes

09220 06/26/2025 Portland Cement Plastering 09911 06/26/2025 Exterior Architectural Painting 09912 06/26/2025 Interior Architectural Painting 09960 03/05/2026 Protective Coatings

Division 10 – Specialties

10400 06/26/2025 Signage 10440 06/26/2025 Fire Protection Specialties

Division 11 – Equipment

11000 06/26/2025 Water and Wastewater Equipment General Provisions 11100 06/26/2025 Common Work Results for Liquid Handling Units 11280 06/26/2025 Fabricated Stainless Steel Slide Gates 11281 06/26/2025 Stainless Steel Weir Gates 11313 06/26/2025 Pumping Unit Testing 11314 06/26/2025 Submersible Sump Pumps 11315 03/13/2026 Screw Centrifugal Pumps 11335 06/26/2025 Chain and Rake Bar Screen and Screenings Washing and Compacting

Equipment 11340 03/05/2026 Biotrickling Filter Odor Control System

Division 12 – Furnishings, Division 13 – Special Construction, Division 14 – Conveying Systems

Not Used

Rev. Date 06/01/2026 Table of Contents Page 6 of 7

Division 15 – Mechanical

15047 06/26/2025 Mechanical Identification 15115 06/26/2025 Specialty Valves 15116 06/26/2025 Plug Valves 15119 06/26/2025 Check Valves 15120 06/26/2025 Common Work Results for Process Interconnections 15140 06/26/2025 Hangers and Supports for Process Piping 15152 06/26/2025 Stop Logs 15204 06/26/2025 Electric Actuators for Valves and Gates 15256 06/26/2025 Process Piping Insulation and Heat Tracing 15257 08/25/2022 Cleaning, Descaling and Passivation Treatments for Stainless Steel

Materials 15500 03/13/2026 HVAC – General Provisions 15503 03/13/2026 HVAC – Demolition 15520 03/13/2026 HVAC – Identification 15550 03/13/2026 HVAC – Unit Heaters 15856 03/13/2026 HVAC – Air Filtration Units 15857 03/13/2026 HVAC – Small Split Air-Conditioning (AC) Systems 15860 03/13/2026 HVAC – Standard Fans 15861 03/13/2026 HVAC – Odor Control Fans 15890 03/13/2026 HVAC – Metal Ductwork and Accessories 15891 03/13/2026 HVAC – Non-Metal Ductwork and Accessories 15895 03/13/2026 HVAC – Insulation 15950 03/13/2026 HVAC – Controls 15990 03/13/2026 HVAC – Testing, Adjusting and Balancing

Division 16 – Electrical

16010 08/22/2016 Electrical General Provisions 16011 09/30/2015 Identifications 16012 08/22/2016 Power Systems Study and Arc Flash 16030 06/26/2025 Selective Demolition for Electrical 16040 06/26/2025 NEMA Frame Induction Motors, 600V and Below 16060 06/26/2025 Acceptance Testing and Calibration 16120 08/22/2016 480 V Motor Control Center 16130 09/30/2015 Boxes and Cabinets 16140 09/30/2015 Wiring Devices 16150 10/24/2016 Raceways, Fittings, and Supports 16191 10/24/2016 Miscellaneous Equipment 16200 09/30/2015 Wires, Conductors, and Cable - 600V and Below 16205 09/30/2015 Wire and Cable Tagging 16250 06/26/2025 Lighting 16301 06/26/2025 480V Generator Docking System 16400 08/22/2016 Surge Protection Devices 16430 06/26/2025 Low Voltage Switchgear 16440 08/22/2016 Disconnect Switches and Enclosed Circuit Breakers 16441 06/26/2025 Switchboards

16441.10 06/26/2025 Enclosed Service Entrance Circuit Breakers 16460 08/22/2016 Dry Type Transformers – 600 volts and Below 16500 08/22/2016 Panelboards 16550 08/22/2016 Grounding 16600 06/26/2025 Underground System 16700 06/26/2025 Common Control Panel Requirements for Equipment 16859 06/26/2025 Electrical Heat Tracing

Division 17 – Instrumentation

17000 08/17/2023 Process Instrumentation and Control System 17200 08/31/2022 Instrument and Control Cabinets and Associated Equipment

Rev. Date 06/01/2026 Table of Contents Page 7 of 7

17346 06/26/2025 Flow Meter Indicating Transmitter 17350 01/16/2026 Hydrogen Sulfide Sensor 17370 08/31/2022 Mechanically Activated Level Switches 17600 08/31/2022 Programmable Logic Controllers (PLCs) and Operator Interface Units

(OIUs) 17620 08/31/2022 Fiber Optic & Ethernet Communication Equipment 17640 08/31/2022 Workstations & Laptops 17910 06/26/2025 PLC Input Output List 17920 06/26/2025 Control Narrative

VOL. 4 of 4 08/2019 MBE/WBE Procurement Program Package

END

STV PROJECT NO. AUST1500124 101S-1 03/25/2021

HB HEADWORKS PREPARING RIGHT-OF-WAY

101S PREPARING RIGHT-OF-WAY

101S.1 Description

This item shall govern the preparation of the right-of-way for construction operations by removal and disposal of all obstructions from the right-of-way and from designated easements, where removal of such obstructions is not otherwise indicated as a separate pay item.

Such obstructions shall be considered to include, but not be limited to, remains of houses not completely removed by others, foundations, floor slabs, concrete, brick, lumber, plaster, cisterns, water wells, septic tanks and drain fields, basements; abandoned utility pipes, conduits, underground service station tanks, fences, retaining walls, outhouses, shacks and all other debris.

This item shall also include, but not be limited to, the removal of trees, stumps, roots, bushes, shrubs, curb and gutter, driveways, paved parking areas, miscellaneous stone, brick, sidewalks, drainage structures, manholes, inlets, abandoned railroad tracks, scrap iron, and all rubbish and debris whether above or below ground. Care should be taken to identify and protect existing infrastructure.

This specification is applicable for projects or work involving either inch-pound or SI units. Within the text the inch-pound units are given preference followed by SI units shown within parentheses.

101S.2 Submittals

The submittal requirements of this specification item may include:

A. A permit when utility adjustments are made in the right-of-way, and

B. A plan for removal and deposition of all non-salvageable materials and debris.

101S.3 Construction Methods

Prior to commencement of this work, all required erosion controls and tree protection measures indicated on the Drawings shall be in place. The existing utilities shall be located and protected as specified in the Standard Contract Documents, Section 00700, "General Conditions" and/or as specified on the Drawings. A permit shall be required when utility adjustments are to be made in preparation for construction in the right-of-way, as specified in Section

5.2.0 of the City of Austin Utilities Criteria Manual.

Areas within the construction limits shall be cleared of all obstructions, abandoned structures, and other items as defined above. All vegetation, except trees or shrubs indicated for preservation, shall also be removed. Trees and shrubs, which are scheduled for preservation, shall be carefully trimmed as directed and shall be protected from scarring, barking or other injuries during construction operations in accordance with Item No. 610S, " Preservation of Trees and Other Vegetation". All exposed cuts over 2 inches (50 millimeters) in diameter, exposed ends of pruned limbs or scarred bark shall be treated with an approved asphalt material within 24 hours of the pruning or injury.

Construction equipment shall not be operated nor construction materials stockpiled under the canopies of trees, unless otherwise indicated on the Drawings and/or specified in the Contract Documents. Excavation or embankment materials shall not be placed within the drip line of trees until tree wells are constructed.

Culverts, storm sewers, manholes and inlets shall be removed in proper sequence for maintenance of traffic and drainage.

Unless otherwise indicated on the Drawings and/or Contract Documents, all underground obstructions, stumps and roots shall be removed to the following depths:

1. In areas to receive 6 inches (150 mm) or more embankment, a minimum of 12 inches (300 mm) below natural ground.

STV PROJECT NO. AUST1500124 101S-2 03/25/2021

2. In areas to receive less than 6 inches (150 mm) of embankment, a minimum of 18 inches (450 mm) below the lower elevation of embankment, structure or excavation.

3. In areas to be excavated a minimum of 18 inches (450 mm) below the lower elevation of the embankment, structure or excavation.

4. In all other areas, a minimum of 12 inches (300 mm) below natural ground.

Holes remaining after removal of all obstructions, objectionable material, trees, stumps, etc. shall be backfilled with select embankment material and compacted by approved methods.

When a utility in service conflicts with the construction, it shall be modified as specified in the Standard Contract Documents, Section 00700, "General Conditions" and/or as specified on the Drawings.

Where an abandoned underground piped utility is found, it shall be cut and plugged with 6 inches (150 mm) of concrete (in accordance with Specification Item 403, "Concrete for Structures") brick and mortar (in accordance with Specification Item 506S, "Manholes") or a precast stopper grouted in place.

Material to be removed will be designated as salvageable or non-salvageable by the Engineer or designated representative prior to removal from the construction site by the Contractor. All material, which is located within the public right-of-way and is declared by the Engineer as salvageable, will remain the property of the City of Austin and will be stored at the site or loaded on city trucks as directed by the Engineer. All non-salvageable materials and debris shall become the property of the Contractor and shall be removed from the site and deposited at a permitted disposal site.

101S.4 Measurement

The preparation of right-of-way for new construction, when included in the contract as a pay item, will be measured by the acre (hectare: 1 hectare equals 2.471 acres), 100 foot (100 feet equals 30.5 meters) stations or lump sum, regardless of the width of the right-of-way.

Measurement for payment will be made only on areas indicated and classified as "Preparing Right-of-Way."

Source: Rule No. R161-21.01, 3-25-2021.

101S.5 Payment

The work and material presented herein will not be paid for directly, but shall be included in the unit price bid for the item of construction in which this item is used unless specified as a separate pay item in the contract bid form.

When included for payment, it shall be paid for at the contract bid price for "Preparing Right-of-Way." This price shall include full compensation for work herein specified, including the furnishing of all materials, equipment, tools, labor and incidentals necessary to complete the work.

When payment is made under the Lump Sum pay item the total payment of this item shall not exceed 5% of the original contract amount until final payment. Any remainder will be paid as part of final payment.

Payment, when included as a contract pay item, will be made under one of the following:

Pay Item No. 101S-A: Preparing Right-of-Way - Per Acre.

Pay Item No. 101S-B: Preparing Right-of-Way - Per 100 foot Station.

Pay Item No. 101S-C: Preparing Right-of-Way - Per Lump Sum.

Source: Rule No. R161-21.01, 3-25-2021.

End

SPECIFIC CROSS REFERENCE MATERIALS

Specification 101S, "PREPARING RIGHT-OF-WAY"

STV PROJECT NO. AUST1500124 101S-3 03/25/2021

City of Austin Standard Contract Documents

Designation Description

00700 General Conditions

City of Austin Utilities Criteria Manual

Designation Description

Section 5.2.0 Permit for Excavation in the Public Right-of-Way

City of Austin Standard Specifications

Designation Description

Item No. 110S Street Excavation

Item No. 111S Excavation

Item No. 120S Channel Excavation

Item No. 132S Embankment

Item No. 403 Concrete for Structures

Item No. 506S Manholes

Item No. 610S Preservation of Trees and Other Vegetation

RELATED CROSS REFERENCE MATERIALS

Specification 101S, "PREPARING RIGHT-OF-WAY"

City of Austin Standard Contract Documents

Designation Description

01500 Temporary Facilities

01550 Public Safety and Convenience

The Code of the City of Austin, Code of Ordinances, Volume 2

Designation Description

Article 14-11-181 Permit Required

Article 14-11-189 Conditions for Permit Issuance

Article 14-11-190 Permit Term

City of Austin Standard Specifications

Designation Description

Item No. 102S Clearing and Grubbing

Item No. 104S Removing Portland Cement Concrete

Item No. 201S Subgrade Preparation

Item No. 203 Lime Treatment for Materials In Place

Item No. 204S Portland Cement Treatment for Materials In Place

Item No. 230S Rolling (Flat Wheel)

Item No. 232S Rolling (Pneumatic Tire)

Item No. 234S Rolling (Tamping)

Item No. 236S Rolling (Proof)

Item No. 602S Sodding for Erosion Control

Item No. 604S Seeding for Erosion Control

Item No. 622S Diversion Dike

Item No. 628S Sediment Containment Dikes

Item No. 642S Silt Fence

STV PROJECT NO. AUST1500124 101S-4 03/25/2021

City of Austin Standard Details

Designation Description

610S-1 Tree Protection Fence Locations

610S-2 Tree Protection Fence, Type B Chainlink

610S-3 Tree Protection Fence, Type B Wood

610S-4 Tree Protection Fence, Modified Type A

610S-5 Tree Protection Fence, Modified Type B

621S-1 Diversion

622S-1 Diversion Dike

624S-1 Earth Outlet Sediment Trap

625S-1 Grade Stabilization Structure

627S-1 Grass Lined Swale

627S-2 Grass Lined Swale With Stone Center

628S Triangular Sediment Filter Dike

628S-1 Hay Bale Dike

629S-1 Brush Berm

630S-1 Interceptor Dike

631S-1 Interceptor Swale

632S-1 Storm Inlet Sediment Trap

633S-1 Landgrading

634S-1 Level Spreader

635S-1 Perimeter Dike

636S-1 Perimeter Swale

637S-1 Pipe Slope Drain (Flexible)

637S-2 Pipe Slope Drain (Flexible)

638S-1 Pipe Outlet Sediment Trap

639S-1 Rock Berm

641S-1 Stabilized Construction Entrance

642S-1 Silt Fence

643S-1 Stone Outlet Structure

644S-1 Stone Outlet Sediment Trap

Texas Department of Transportation: Standard Specifications for Construction and Maintenance of Highways, Streets, and Bridges

Designation Description

Item No. 100 Preparing Right-of-Way

Item No. 110 Excavation

Item No. 112 Subgrade Widening

Item No. 132 Embankment

Item No. 150 Blading

Item No. 158 Specialized Excavation Work

Item No. 160 Furnishing and Placing Topsoil

Item No. 164 Seeding for Erosion Control

Texas Department of Transportation: Standard Specifications for Construction and Maintenance of Highways, Streets, and Bridges

Designation Description

Item No. 204 Sprinkling

STV PROJECT NO. AUST1500124 101S-5 03/25/2021

Item No. 210 Rolling (Flat Wheel)

Item No. 211 Rolling (Tamping)

Item No. 213 Rolling (Pneumatic Tire)

Item No. 260 Lime Treatment for Materials Used as Subgrade (Road Mixed)

Item No. 265 Lime-Fly Ash (LFA) Treatment for Materials Used as Subgrade

Texas Department of Transportation: Manual of Testing Procedures

Designation Description

Tex-103-E Determination of Moisture Content of Soil Materials

Tex-104-E Determination of Liquid Limit of Soils

Tex-105-E Determination of Plastic Limit of Soils

Tex-106-E Method of Calculating the Plasticity Index of Soils

Tex-114-E Laboratory Compaction Characteristics and Moisture-Density Relationship of Subgrade & Embankment Soil

Tex-115-E Field Method for Determination of In-Place Density of Soils and Base Materials

STV PROJECT NO. AUST1500124 104S-1 09/26/2012

HB HEADWORKS REMOVING PORTLAND CEMENT CONCRETE

104S REMOVING PORTLAND CEMENT CONCRETE

104S.1 Description

This item shall govern the demolition, removal and satisfactory disposal of existing Portland cement concrete, as classified, at locations indicated on the Drawings or as directed by the Engineer or designated representative.

This specification is applicable for projects or work involving either inch-pound or SI units. Within the text inch-pound units are given preference followed by SI units shown within parentheses.

104S.2 Submittals

The submittal requirements of this specification item may include:

A. A permit when utility adjustments are made in the right-of-way, and

B. A plan for removal and deposition of all 'broken up' existing Portland cement (p.c.) concrete materials and debris.

104S.3 Classification

Existing Portland cement concrete, when removed under this section, will be classified as follows:

1. Concrete Curb will include curb, curb and gutter and combinations thereof,

2. Concrete Slabs will include, but not be limited to, house slabs, patio slabs, porch slabs, concrete riprap and concrete pavement,

3. Sidewalks and Driveways will include concrete sidewalks and driveways,

4. Concrete Walls will include all walls, regardless of height, and wall footings,

5. Concrete Steps will include all steps and combinations of walls and steps,

6. Abandoned Foundations will include abandoned utility foundations,

7. Miscellaneous Concrete shall include all other concrete items, which are not identified in items 1 through 6 above.

104S.4 Materials

Mortar shall conform to mortar specified in Standard Specification Item No. 403, "Concrete for Structures".

104S.5 Construction Methods

Prior to commencement of this work, all required erosion control and tree protection measures shall be in place.

The existing utilities shall be located and protected as specified in the Standard Contract Documents, Section 00700, "General Conditions". A permit shall be required when utility adjustments are to be made in preparation for highway construction, as specified in Section 5.2.0 of the City of Austin Utilities Criteria Manual.

The existing Portland cement concrete shall be broken up, removed in accordance with Item No. 101S, "Preparing Right-of-way" and disposed of by the Contractor and deposited at a permitted disposal site.

When it is specified that only a portion of the existing Portland cement (p.c.) concrete is to be removed and that the remaining p.c. concrete will continue to serve its purpose, special care shall be exercised to avoid damage to that portion which will remain in place. Unless otherwise established by the Engineer or designated representative, existing p.c. concrete shall be cut to the neat lines, that are indicated on the Drawings, by sawing with an appropriate type circular type circular concrete saw to a minimum depth of ½ inch (12.5 mm). Any reinforcing steel encountered shall be cut off 1 inch (25 mm) inside of p.c. concrete sawed line. Any existing p.c. concrete, which is

STV PROJECT NO. AUST1500124 104S-2 09/26/2012

damaged or destroyed beyond the neat lines so established, shall be replaced at the Contractor's expense.

Remaining p.c. concrete shall be mortared to protect the reinforcing steel and provide a neat clean appearance.

When reinforcement is encountered during the removal of portions of existing structures to be modified, a minimum of 1 foot (300 mm) of steel length shall be cleaned of all old p.c. concrete and left in place to tie into the new construction where applicable. All unsuitable material shall be removed and replaced with approved material.

All foundations, walls or other objectionable material shall be removed to a minimum depth of 18 inches (450 mm) below all structures and 12 inches (300 mm) below areas to be vegetated.

104S.6 Measurement

When included in the contract as a separate pay item, the removal of p.c. concrete curb and p.c. concrete wall as prescribed above will be measured by the lineal foot (meter: 1 meter is equal to 3.281 feet) in its original position regardless of the dimensions or size. The removal of p.c. concrete slabs, p.c concrete sidewalks and driveways, as prescribed above, will be measured by the square foot (square meter: 1 square meter is equal to 10.764 square feet) in original position, regardless of the thickness and existence of reinforcing steel. Portland cement concrete steps removed will be measured per lineal foot (meter: 1 meter is equal to 3.281 feet) of each individual step tread including the bottom step. The removal of p.c. concrete foundations will be measured per each individual foundation. The removal of miscellaneous concrete will be measured per lump sum.

104S.7 Payment

The work and materials presented herein will generally not be paid for directly, but shall be included in the unit price bid for the item of construction in which this item is used. When specified in the contract bid form as a separate pay item, the item will be paid for at the contract unit bid price(s) for "Remove P.C. Concrete Curb", "Remove P.C. Concrete Slab", "Remove P.C. Concrete Sidewalks and Driveways", "Remove P.C. Concrete Walls", "Remove P.C. Concrete Steps", "Remove P.C. Concrete Foundations" and "Remove Miscellaneous P.C. Concrete".

The bid prices shall include full compensation for all Work herein specified, including the disposal of all material not required in the Work, the furnishing of all materials, equipment, tools, labor and incidentals necessary to complete the Work.

Payment will be made under one of the following:

Pay Item No. 104S-A: Remove P.C. Concrete Curb Per Lineal foot.

Pay Item No. 104S-B: Remove P.C. Concrete Slab Per Square foot.

Pay Item No. 104S-C: Remove P.C. Concrete Sidewalks and Driveways

Per Square foot

Pay Item No. 104S-D: Remove P.C. Concrete Wall Per Lineal foot.

Pay Item No. 104S-E: Remove P.C. Concrete Steps Per Lineal foot.

Pay Item No. 104S-F: Remove P.C. Concrete Foundations

Per Each.

Pay Item No. 104S-G: Remove Miscellaneous P.C.

Concrete

Per Lump Sum.

End

SPECIFIC CROSS REFERENCE MATERIALS

Specification Item 104S, "REMOVING CONCRETE"

City of Austin Standard Contract Documents

00700 General Conditions

STV PROJECT NO. AUST1500124 104S-3 09/26/2012

City of Austin Utilities Criteria Manual

Designation Description

Section 5.2.0 Permit for Excavation in the Public Right-of-Way

City of Austin Standard Specifications

Designation Description

Item No. 101S Preparing Right-of-way

Item No. 110S Street Excavation

Item No. 111S Excavation

Item No. 120S Channel Excavation

Item No. 132S Embankment

Item No. 403 Concrete for Structures

Item No. 610S Preservation of Trees and Other Vegetation

RELATED CROSS REFERENCE MATERIALS

Specification Item 104S, "REMOVING CONCRETE"

City of Austin Standard Contract Documents

Designation Description

01500 Temporary Facilities

01550 Public Safety and Convenience

The Code of the City of Austin, Code of Ordinances, Volume 1

Designation Description

Article 15-12-166 Permit Required

Article 15-12-173 Conditions for Permit Issuance

Article 15-12-174 Permit Term

City of Austin Standard Specifications

Designation Description

Item No. 201S Subgrade Preparation

Item No. 602S Sodding for Erosion Control

Item No. 604S Seeding for Erosion Control

Item No. 622S Diversion Dike

Item No. 628S Sediment Containment Dikes

Item No. 642S Silt Fence

City of Austin Standard Details

Designation Description

610S-1 Tree Protection Fence Locations

610S-2 Tree Protection Fence, Type B Chainlink

610S-3 Tree Protection Fence, Type B Wood

610S-4 Tree Protection Fence, Modified Type A

610S-5 Tree Protection Fence, Modified Type B

621S-1 Diversion

622S-1 Diversion Dike

624S-1 Earth Outlet Sediment Trap

625S-1 Grade Stabilization Structure

STV PROJECT NO. AUST1500124 104S-4 09/26/2012

627S-1 Grass Lined Swale

627S-2 Grass Lined Swale With Stone Center

628S Triangular Sediment Filter Dike

628S-1 Hay Bale Dike

629S-1 Brush Berm

630S-1 Interceptor Dike

631S-1 Interceptor Swale

632S-1 Storm Inlet Sediment Trap

633S-1 Landgrading

634S-1 Level Spreader

635S-1 Perimeter Dike

636S-1 Perimeter Swale

637S-1 Pipe Slope Drain (Flexible)

637S-2 Pipe Slope Drain (Flexible)

638S-1 Pipe Outlet Sediment Trap

639S-1 Rock Berm

641S-1 Stabilized Construction Entrance

642S-1 Silt Fence

643S-1 Stone Outlet Structure

644S-1 Stone Outlet Sediment Trap

Texas Department of Transportation: Standard Specifications for Construction and Maintenance of Highways, Streets, and Bridges

Designation Description

Item No. 100 Preparing Right-of-way

Item No. 104 Removing Concrete

Item No. 110 Excavation

Item No. 112 Subgrade Widening

Item No. 132 Embankment

Item No. 158 Specialized Excavation Work

Item No. 420 Concrete Structures

STV PROJECT NO. AUST1500124 111S-1 09/26/2012

HB HEADWORKS EXCAVATION

111S EXCAVATION

111S.1 Description

This item shall govern: (1) the excavation and proper utilization or satisfactory disposal of all excavated materials, of whatever character, within the limits of the Work and (2) construction, compaction, shaping and finishing of all designated earthwork areas in accordance with the specification requirements outlined herein and in conformity with the required lines, grades and typical cross sections indicated on the Drawings or as directed by the Engineer or designated representative. When not otherwise included in the Contract Documents, this item shall include the work described in Specification Item Nos. 101S, "Preparing Right-of-way", No. 102S, "Clearing and Grubbing", No.

104S, "Removing Portland Cement Concrete", No. 132S "Embankment" and No. 201S, "Subgrade Preparation".

This specification is applicable for projects or work involving either inch-pound or SI units. Within the text inch-pound units are given preference followed by SI units shown within parentheses.

111S.2 Submittals

The submittal requirements of this specification item may include:

A. A permit when utility adjustments are made in the right-of-way, B. A plan for removal and deposition of all 'Waste' materials, and

C. A Blasting Permit if blasting is required and allowed on the project.

111S.3 Classification

All excavation shall be unclassified and shall include all materials encountered regardless of their nature or the manner in which they are removed.

111S.4 Construction Methods

Prior to commencement of this work, all required erosion control and tree protection measures shall be in place.

The existing utilities shall be located and shall be protected as specified in the Standard Contracts Document Section 00700, "General Conditions" and/or indicated on the Drawings. A permit shall be required when utility adjustments are to be made in preparation for construction in the right-of-way, as specified in Section 5.2.0 of the City of Austin Utilities Criteria Manual.

Construction equipment shall not be operated nor construction materials stockpiled under the canopies of trees, unless otherwise indicated on the Drawings. Excavation or embankment materials shall not be placed within the drip line of trees until tree wells are constructed, that conform to Specification Item No. 610S, "Preservation of Trees and Other Vegetation".

All excavation shall be performed as specified herein and shall conform to the established alignment, grades and cross sections indicated on the Drawings. Suitable excavated materials shall be utilized, insofar as practical, in constructing required embankments. The construction of all embankments shall conform to Specification Item No.

132S, "Embankment". No material shall be stockpiled within the banks of a waterway.

Unsuitable excavated materials or excavation in excess of that needed for construction shall be known as "Waste" and shall become the property of the Contractor. Unsuitable material encountered below the subgrade elevation in roadway cuts, when declared "Waste" by the Engineer or designated representative, shall be replaced with material from the roadway excavation or with other suitable material as approved by the Engineer. It shall become the Contractor's responsibility to dispose of this material off the limits of the right-of-way in an environmentally sound manner at a permitted disposal site.

STV PROJECT NO. AUST1500124 111S-2 09/26/2012

All blasting shall conform to the Provisions of the Standard Contract Document Section 01550, "Public Safety and Convenience". In all cases, a Blasting Permit must be obtained in advance from the City of Austin, Public Works Department.

Adequate dewatering and drainage of excavation shall be maintained throughout the time required to complete the excavation work.

111S.5 Measurement

All accepted excavation will be measured by either Method A or B as follows:

(1) Method A

Measurement of the volume of excavation in cubic yards (cubic meters: 1 cubic meter is equal to 1.308 cubic yards) by the average end area methods. Cross-sectional areas shall be computed from the existing ground surface to the established line of the subgrade, as shown on typical sections in the Drawings, over the limits of the right-of-way or other work limits, including parkway slopes and sidewalk areas.

(2) Method B

Measurement of the volume of excavation in cubic yards (cubic meters: 1 cubic meter is equal to 1.308 cubic yards) based upon the average end area method taken from pre-construction cross sections and planned grades. The planned quantities for excavation will be used as the measurement for payment for this item.

111S.6 Payment

This item will be paid for at the contract unit bid price for "Excavation", as provided under measurement Method A or B as included in the bid. The bid price shall include full compensation for all work herein specified including dewatering, drainage, subgrade preparation, unless otherwise indicated, and the furnishing of all materials, equipment, tools, labor and incidentals necessary to complete the work.

Payment will be made under one of the following:

Pay Item No. 111S-A: Excavation Per Cubic Yard.

Pay Item No. 111S-B: Excavation, Plan Quantity Per Cubic Yard.

End

SPECIFIC CROSS REFERENCE MATERIALS

Specification Item 111S, "EXCAVATION"

City of Austin Standard Contract Documents

Designation Description

00700 General Conditions

01550 Public Safety and Convenience

City of Austin Utilities Criteria Manual

Designation Description

Section 5.2.0 Permit for Excavation in the Public Right-of-Way

City of Austin Technical Specifications

Designation Description

Item No. 101S Preparing Right-of-way

Item No. 102S Clearing and Grubbing

Item No. 104S Removing Portland Cement Concrete

Item No. 132S Embankment

STV PROJECT NO. AUST1500124 111S-3 09/26/2012

Item No. 201S Subgrade Preparation

Item No. 236S Proof Rolling

Item No. 610S Preservation of Trees and Other Vegetation

RELATED CROSS REFERENCE MATERIALS

Specification Item 111S, "EXCAVATION"

City of Austin Standard Contract Documents

Designation Description

01500 Temporary Facilities

City of Austin Standard Specifications

Designation Description

Item No. 120S Channel Excavation

Item No. 203 Lime Treatment for Materials In Place

Item No. 204S Portland Cement Treatment for Materials In Place

Item No. 230S Rolling (Flat Wheel)

Item No. 232S Rolling (Pneumatic Tire)

Item No. 234S Rolling (Tamping)

Item No. 602S Sodding for Erosion Control

Item No. 604S Seeding for Erosion Control

Item No. 622S Diversion Dike

Item No. 628S Sediment Containment Dikes

Item No. 642S Silt Fence

City of Austin Standard Details

Designation Description

No. 610S-1 Tree Protection Fence Locations

No. 610S-2 Tree Protection Fence, Type B Chainlink

No. 610S-3 Tree Protection Fence, Type B Wood

No. 610S-4 Tree Protection Fence, Modified Type A

No. 610S-5 Tree Protection Fence, Modified Type B

No. 621S-1 Diversion

No. 622S-1 Diversion Dike

No. 624S-1 Earth Outlet Sediment Trap

No. 625S-1 Grade Stabilization Structure

No. 627S-1 Grass Lined Swale

No. 627S-2 Grass Lined Swale With Stone Center

No. 628S Triangular Sediment Filter Dike

No. 628S-1 Hay Bale Dike

No. 629S-1 Brush Berm

No. 630S-1 Interceptor Dike

No. 631S-1 Interceptor Swale

No. 632S-1 Storm Inlet Sediment Trap

No. 633S-1 Landgrading

No. 634S-1 Level Spreader

No. 635S-1 Perimeter Dike

No. 636S-1 Perimeter Swale

No. 637S-1 Pipe Slope Drain (Flexible)

No. 637S-2 Pipe Slope Drain (Flexible)

STV PROJECT NO. AUST1500124 111S-4 09/26/2012

No. 638S-1 Pipe Outlet Sediment Trap

No. 639S-1 Rock Berm

No. 641S-1 Stabilized Construction Entrance

No. 642S-1 Silt Fence

No. 643S-1 Stone Outlet Structure

No. 644S-1 Stone Outlet Sediment Trap

The Code of the City of Austin, Code of Ordinances, Volume 1

Designation Description

Article 15-12-166 Permit Required

Article 15-12-173 Conditions for Permit Issuance

Article 15-12-174 Permit Term

Texas Department of Transportation: Standard Specifications for Construction and Maintenance of Highways, Streets, and Bridges

Designation Description

Item No. 100 Preparing Right-of-way

Item No. 110 Excavation

Item No. 112 Subgrade Widening

Item No. 132 Embankment

Item No. 150 Blading

Item No. 158 Specialized Excavation Work

Item No. 160 Furnishing and Placing Topsoil

Item No. 164 Seeding for Erosion Control

Item No. 204 Sprinkling

Item No. 210 Rolling (Flat Wheel)

Item No. 211 Rolling (Tamping)

Item No. 213 Rolling (Pneumatic Tire)

Item No. 260 Lime Treatment for Materials Used as Subgrade (Road Mixed)

Item No. 265 Lime-Fly Ash (LFA) Treatment for Materials Used as Subgrade

Texas Department of Transportation: Manual of Testing Procedures

Designation Description

Tex-103-E Determination of Moisture Content of Soil Materials

Tex-104-E Determination of Liquid Limit of Soils

Tex-105-E Determination of Plastic Limit of Soils

Tex-106-E Method of Calculating the Plasticity Index of Soils

Tex-114-E Laboratory Compaction Characteristics and Moisture-Density Relationship of

STV PROJECT NO. AUST1500124 130S-1 09/26/2012

HB HEADWORKS BORROW

130S BORROW

130S.1 Description

This item shall govern required excavation, removal and proper utilization of materials secured from sources, selected by the Contractor and approved by the Engineer or designated representative. The compaction of embankments constructed from borrow as provided herein shall conform to the appropriate sections of Specification Item Nos. 132S, "Embankment" and 236S, "Proof Rolling".

Borrow will be used only when indicated on the Drawings or directed by the Engineer or designated representative and shall only be acquired from approved sources.

This specification is applicable for projects or work involving either inch-pound or SI units. Within the text inch-pound units are given preference followed by SI units shown within parentheses.

130S.2 Submittals

The submittal requirements of this specification item may include:

A. Identification of Class, source and characteristics (P.I., linear shrinkage, etc.) of proposed borrow material, and

B. A plan for managing and maintaining borrow sites.

130S.3 Materials

All authorized borrow shall conform to one of the following classes:

Class A (Select Borrow)

Class A Borrow material shall consist of suitable granular material, free from vegetation or other objectionable matter and reasonably free from lumps of earth. When tested by standard TxDOT laboratory methods Tex-105-E, Tex-106-E and Tex-107-E, the Class A Select Borrow, shall meet the following requirements:

The Liquid Limit shall not exceed 45

The Plasticity Index shall not exceed 15

The bar linear shrinkage shall not be less than 2

Class B (Borrow)

Class B Borrow material shall consist of suitable non swelling [i.e. soils with a plasticity index (P.I.) less than 20] earth material such as loam, clay or other such materials that will form a stable embankment.

Class C (Topsoil) See Standard Specification Item No. 601S.3(A)

Class C Borrow material shall consist of approved soils, which shall be clean, friable and capable of supporting plant life. This material shall also be free of stones and all other debris.

130S.4 Construction Methods

Prior to commencing this work, all required erosion control and environmental measures shall be in place. All suitable materials removed from excavations shall be used, insofar as practicable in the formation of embankments conforming to Specification Item No. 132S, "Embankment", as otherwise indicated on the Drawings or as directed by the Engineer or designated representative. The completed work shall conform to the established alignment, grades and cross section as shown on the Drawings. The additional material necessary to complete the work described above shall be "Borrow" of the class specified.

STV PROJECT NO. AUST1500124 130S-2 09/26/2012

The Contractor shall arrange for borrow from one of the following sources:

1. Existing borrow pit,

2. New borrow pit, or

3. Surplus excavated material from a site, with a site development permit.

The Contractor shall notify the Engineer 3 weeks prior to opening a pit or any other borrow source to allow necessary testing for approval of materials. All borrow sites shall comply with the requirements of the site development permit.

During construction, borrow sources shall be kept drained to permit final cross sections to be measured, when required.

Borrow sites shall be managed and maintained to minimize the impact of the appearance of the natural topographic features and at no time create a potential hazard to the public.

130S.5 Measurement

Borrow will be measured by the cubic yard (cubic meters: 1 cubic meter is equal to 1.196 cubic yards) in its final position based upon the average end areas, calculated from pre-construction cross sections and plan grades. The plan quantities for Borrow or Topsoil will be used as the measurement for payment for this item.

130S.6 Payment

All work performed as required herein and measured as provided under "Measurement" will be paid for at the unit bid price. The bid prices shall include full compensation for furnishing all labor; all materials; all royalty and freight involved; all hauling and delivering on the road; and all tools, equipment and incidentals necessary to complete the work. Payment will not be made for unauthorized work.

Payment will be made under one of the following:

Pay Item No. 130S-A: Class A (Select Borrow), Plan Quantity

Per Cubic Yard.

Pay Item No. 130S-B: Class B (Borrow), Plan Quantity Per Cubic Yard.

Pay Item No. 130S-T: Class C (Topsoil), Plan Quantity Per Cubic Yard.

End

SPECIFIC CROSS REFERENCE MATERIALS

Specification 130S, "BORROW"

City of Austin Standard Specifications

Designation Description

Item No. 132S Embankment

Item No. 236S Rolling (Proof)

Texas Department of Transportation: Manual of Testing Procedures

Designation Description

Tex-105-E Determination of Plastic Limit of Soils

Tex-106-E Method of Calculating the Plasticity Index of Soils

Tex-107-E Determination of Bar Linear Shrinkage of Soils

RELATED CROSS REFERENCE MATERIALS

Specification 130S, "BORROW"

STV PROJECT NO. AUST1500124 130S-3 09/26/2012

City of Austin Standard Contract Documents

Designation Description

00700 General Conditions

City of Austin Standard Specifications

Designation Description

Item No. 101S Preparing Right-of-way

Item No. 102S Clearing and Grubbing

Item No. 110S Street Excavation

Item No. 111S Excavation

Item No. 230S Rolling (Flat Wheel)

Item No. 232S Rolling (Pneumatic Tire)

Item No. 234S Rolling (Tamping)

Item No. 602S Sodding for Erosion Control

Item No. 604S Seeding for Erosion Control

Item No. 610S Preservation of Trees and Other Vegetation

Item No. 622S Diversion Dike

Item No. 628S Sediment Containment Dikes

Item No. 642S Silt Fence

City of Austin Standard Details

Designation Description

No. 610S-1 Tree Protection Fence Locations

No. 610S-2 Tree Protection Fence, Type B Chainlink

No. 610S-3 Tree Protection Fence, Type B Wood

No. 610S-4 Tree Protection Fence, Modified Type A

No. 610S-5 Tree Protection Fence, Modified Type B

No. 621-1 Diversion

No. 622-1 Diversion Dike

No. 624-1 Earth Outlet Sediment Trap

No. 625-1 Grade Stabilization Structure

No. 626-1 Grass Lined Swale

No. 627-1 Grass Lined Swale With Stone Center

No. 628S Triangular Sediment Filter Dike

No. 628S-1 Hay Bale Dike

No. 629S-1 Brush Berm

No. 630S-1 Interceptor Dike

No. 631S-1 Interceptor Swale

No. 632S-1 Storm Inlet Sediment Trap

No. 633S-1 Landgrading

No. 634S-1 Level Spreader

No. 635S-1 Perimeter Dike

No. 636S-1 Perimeter Swale

No. 637S-1 Pipe Slope Drain (Flexible)

No. 637S-2 Pipe Slope Drain (Flexible)

No. 638S-1 Pipe Outlet Sediment Trap

No. 639S-1 Rock Berm

No. 641S-1 Stabilized Construction Entrance

STV PROJECT NO. AUST1500124 130S-4 09/26/2012

No. 642S-1 Silt Fence

No. 643S-1 Stone Outlet Structure

No. 644S-1 Stone Outlet Sediment Trap

Texas Department of Transportation: Standard Specifications for Construction and Maintenance of Highways, Streets, and Bridges

Designation Description

Item No. 100 Preparing Right-of-way

Item No. 110 Excavation

Item No. 132 Embankment

Item No. 158 Specialized Excavation Work

Item No. 160 Furnishing and Placing Topsoil

Item No. 164 Seeding for Erosion Control

Item No. 204 Sprinkling

Item No. 210 Rolling (Flat Wheel)

Item No. 211 Rolling (Tamping)

Item No. 213 Rolling (Pneumatic Tire)

Texas Department of Transportation: Manual of Testing Procedures

Designation Description

Tex-103-E Determination of Moisture Content of Soil Materials

Tex-104-E Determination of Liquid Limit of Soils

Tex-114-E Laboratory Compaction Characteristics and Moisture-Density Relationship of

STV PROJECT NO. AUST1500124 201S-1 06/17/2021

HB HEADWORKS SUBGRADE PREPARATION

201S SUBGRADE PREPARATION

201S.1 Description

This item shall govern scarifying; blading and rolling the subgrade to obtain a uniform texture and provide as nearly as practicable a uniform density for the top 6 inches (150 mm) of the subgrade.

This specification is applicable for projects or work involving either inch-pound or SI units. Within the text and accompanying tables, the inch-pound units are given preference followed by SI units shown within parentheses.

201S.2 Submittals

The submittal requirements of this specification item may include:

A. A plan identifying classification and characteristics (P.I., optimum moisture-density, etc.) of insitu subgrade soils, as well as the source, classification and characteristics of any proposed borrow material, B. Type and size of equipment proposed to produce the required compaction, and

C. Compaction (moisture-density, etc) test results for in-situ subgrade soils and/or borrow materials.

201S.3 Construction Methods

Prior to initiation of subgrade preparation activities, all operations involving Standard Specification Item No. 101S," Preparing Right-of-Way" and/or Standard Specification Item No. 102S, "Clearing and Grubbing" shall be completed.

The surface of the subgrade shall be scarified and shaped in conformity with the typical sections and the lines and grades indicated on the Drawings; by the removal of existing material or addition of approved material as established by the Engineer or designated representative. Any deviation in the subgrade cross section which exceeds ½ inch in a length of 10 feet (12 mm in a length of 3 meters), measured longitudinally, shall be corrected by loosening, adding or removing material, and then reshaping and compacting by sprinkling and rolling.

All unsuitable material shall be removed and replaced with approved material. All foundations, walls or other objectionable material shall be removed in accordance with Standard Specification Item No. 104S, "Removing Portland Cement Concrete" to a minimum depth of 18 inches (450 mm) under all structures and 12 inches (300

mm) under areas to be vegetated. All holes, ruts and depressions shall be filled with approved material and compacted by approved methods.

The subgrade shall be prepared sufficiently in advance to insure satisfactory prosecution of the Work. The Contractor will be required to set blue tops for the subgrade on the centerline, at the quarter points and along the curb lines or edge of pavement at maximum intervals of 50 feet (15 meters).