01 - YTPM 24-3002 Repair TW Tango SOW and Specs.pdf

STATEMENT OF WORK

PROJECT YTPM 24-3002

REPAIR TAXIWAY TANGO

439 CIVIL ENGINEERING

WESTOVER AIR RESERVE BASE

CHICOPEE, MASSACHUSETTS

01022

28 MAY 2024

STATEMENT OF WORK COVER SHEET 01

SECTION SECTION TITLE PAGE

DIVISION 1 - GENERAL REQUIREMENTS 03

DIVISION 1 - WESTOVER GENERAL CONDITIONS 05

APPENDIX A – LOCUS AND PROJECT LIMITS 13

APPENDIX B – PICTURES OF EXISTING STRUCTURES 15

APPENDIX C - AS-BUILT DRAWINGS WITH MARKUPS 19

APPENDIX D - BARRIER PLAN 21

APPENDIX E – HAUL ROUTE 23

TECHNICAL SPECIFICATIONS 25

DIVISION 2 – EXISTING CONDITIONS

02 41 00 DEMOLITION

DIVISION 32 – EXTERIOR IMPROVEMENTS

32 11 23 GRADED-CRUSHED AGGREGATE BASE COURSES

32 12 13 BITUMINOUS TACK AND PRIME COATS

32 12 15.13 ASPHALT PAVING FOR AIRFIELDS

32 17 23 PAVEMENT MARKINGS

ATTACHMENTS (FORMS) –

- Construction Waste Management Plan

- Quarterly Solid Waste Disposal Form - updated 1Oct2020

- 439 AWF 20 439 AW Form 20, Contractor Information Sheet

DIVISION 1 GENERAL REQUIREMENTS

Project is located at Westover Air Reserve Base, Chicopee, Massachusetts. The Contractor shall conduct all work so as to cause the least interference possible with the normal activities of the neighboring facilities and surrounding areas.

A. Purpose: The purpose of this project is for the repair of two (2) manholes located on Taxiway Tango as described in this SOW and associated documents. Project includes a design component whereas the contractor shall provide a stamped engineered design for the repair of the manhole structures for approval by WARB Civil Engineering. Project drawings shall indicate the objective and proposed repair for this project. Following the approval the Contractor is to perform this repair on the stated manholes as approved. Work shall conform to UFC 3-270-1, O&M Manual – Asphalt and Concrete Pavement Maintenance and Repair, With Change 1, dated 17 March 2022. Existing marking shall be maintained unless otherwise annotated.

B. Period of Performance: The performance period for this Statement of Work is one hundred eighty

(180) calendar days from Notice to Proceed. The Contractor shall begin work as described in the Scope of Work within ten (10) calendar days of Notice to Proceed (NTP). No construction shall begin prior to government approval of the Plans & Submittals. All on site work must be completed within thirty (30) calendar days of mobilization.

C. Inspection: A final inspection shall be conducted once all work has been completed in accordance with the Statement of Work prior to contract completion date. All punch list of items shall be corrected within ten

(10) calendar days of final inspection or as approved by the Contracting Officer.

D. Warranty: The warranty shall be issued in accordance with FAR 52.246-1. Extended warranties offered by the Contractor and its subcontractors or suppliers may be accepted by the Government at its discretion.

E. Working Hours and Restrictions: The work hours for this project are 7:00am to 4:00pm Monday through Friday excluding all Federal Holidays.

SUMMARY OF WORK

A. Background:

There are two manholes in Taxiway Tango that need repairs. The existing concrete around the existing manhole as well as the concrete slab that the manhole is located within is in very poor shape needs replacement.

B. Taxiway Tango Repair:

- This project consists of the demolition of the concrete around two manholes located within Taxiway Tango. The area and extents of the concrete demolition is as shown in Appendix A (Locus and Project Limits) and shall be sawcut prior to demolition. The concrete shall be cut into small enough pieces to allow for lifting them out without damaging the remaining concrete.

- The existing manholes have damage to the concrete cast-in-place tops in which the frames and covers are set. See Appendix B (Pictures of Existing Structures). A repair is needed to provide the structural integrity of the manhole structure. The repair will also include adjusting the frame and cover to meet the grades of the remaining concrete slabs.

- After Notice to Proceed, the contractor shall perform a site survey of the location to confirm the conditions as outlined in this SOW. The Contractor shall then submit sealed (by a Professional Engineer) shop drawings for approval on the proposed method for the manhole structure repairs and adjustment. The method for adjustment shall take into account aircraft loading as required.

- The frame and cover can be replaced with a frame and grate if necessary for the repair to work due to availability of frame sizes.

- Three possible repair concepts as determined by WARB CE include but are not limited to the following:

1. Removing the existing manhole frames and covers, cut down the manhole structure to allow for a new precast top with integrated frame and grate to meet the elevation of the remaining concrete of adjacent slabs.

2. Remove the existing frame and cover by cutting down the existing structure approximately 10” to the 36” square manhole vertical structure and using a new wide flanged heavy-duty frame and grate which shall be placed on the cutdown structure with enough bearing on the concrete for aircraft loading. The frame and grate shall be adjusted and secured to meet aircraft loading requirements.

3. Remove the existing cast-in-place top, frame and pour a new cast-in- place top with integrated frame and cover.

See Appendix C (As-built Drawings with Markups).

- The remaining base material is to be compacted and additional graded-crushed aggregate base coarse as specified in Spec. Section 32 11 23 is to be placed and compacted as required.

- 5” minimum of hot mix asphalt (HMA) as specified in Spec. Section 32 12 15.13 shall be placed up on top of the compacted base course to the elevation of the remaining adjacent concrete. The HMA is to be placed in multiple lifts to allow for proper compaction.

- Any pavement markings that were removed or damaged during the repair process shall be repainted in accordance with Spec Section 32 17 23.

WESTOVER GENERAL CONDITIONS

INDEX

ARTICLE PAGE

1. TEMPORARY PROTECTION 06

2. SECURITY 06

3. UNDERGROUND UTILITIES, UTILITY INTERRUPTIONS 06

AND SHUTDOWNS

4. QUALITY ASSURANCE 07

5. CONCEALED WORK 07

6. SUBMITTALS 07

7. SUPERINTENDENCE BY THE CONTRACTOR 08

8. NOTIFICATION PRIOR TO CONSTRUCTION OR DEMOLITION 08

9. STORAGE AND HANDLING 08

10. SCHEDULING 08

11. DAMAGED PROPERTY 08

12. CLEANING UP 09

13. SAFETY PRECAUTIONS 09

14. ENVIRONMENTAL PROTECTION 09

15. HAZARDOUS MATERIAL REPORTING 09

16. HAUL ROUTES 09

17. TEMPORARY STAGING AND CONSTRUCTION AIDS 10

18. CONSTRUCTION/DEMOLITION WASTE MANAGEMENT PLAN 10

AND REPORTING

19. REQUIREMENTS FOR AIRFIELD WORK 10

1. TEMPORARY PROTECTION_______________________ ________________________

A. The Contractor shall protect all workmen, civilian and military personnel and the general public from injury.

The Contractor shall coordinate and schedule all work with the Contracting Officer.

B. The Contractor shall conduct all work so as to cause the least interference possible with the normal activities of the operations of the airfield and surrounding areas.

2. SECURITY_________________________________________________________________

A. All project work and conduct of construction activity must comply with all Base security regulations and policies.

B. Identification Badges are required for projects on Westover ARB property and are to be obtained by completing the 439 AW Form 1 for all Contractor's employees including subcontractor personnel working on the project. The 439 AW Form 1 shall be submitted with fourteen (14) calendar days or more of advance written notification. Badges shall be worn at all times while on Base and shall be visible at all times.

C. The Contractor shall be responsible for the return of all Identification Badges to the Contracting Officer after completion of the project. Final payment will not be made until all badges are returned.

D. The Contractor shall enter the project site only at a location approved by the Contracting Officer. Restrict all activities and movement of workers, supplies, and equipment to the designated project area and haul routes.

3. UNDERGROUND UTILITIES, UTILITY INTERRUPTIONS AND SHUTDOWNS___

A. The Contractor shall submit a notification prior to excavation or any ground disturbing activity. The notification shall be AF IMT 103, BCE Work Clearance Request (Dig Permit) and shall be submitted to the Contracting Officer at least 30 calendar days prior to the planned excavation. The Contractor shall obtain approval prior to excavation.

The government will mark out known existing underground utilities in the work area. The marked location of the existing utilities is approximate. Excavation by power driven equipment is not permitted within three (3) feet of either side of the marked utility. Hand excavate on each side of the indicated obstruction and continue until uncovered or clearance for the new grade is assured.

B. Report damage to underground utilities or subsurface construction immediately to the Contracting Officer.

Damage to marked utilities will be satisfactorily repaired or replaced by the Contractor at no additional cost to the government. Damage to unmarked utilities will be repaired or replaced at the government’s expense. Should the government engage the Contractor to perform the repairs or replacement; an equitable adjustment in the contract amount will be negotiated prior to the repair or replacement being made. Repair is defined as permanent, code compliant measures as approved by the Contracting Officer.

C. Interruptions shall be defined as any Contractor operation that interferes with access through, or use of facilities or areas including utilities, Energy Monitoring and Control Systems (EMCS), parking lots, generators, roads, or airfields.

D. Request for an interruption shall be submitted in writing at least fifteen (15) calendar days in advance of the date desired and includes at least one alternate date. Include the following information: Location(s) of interruption(s), hours and dates of interruption(s), which services are affected and which facilities are affected.

Contractor is cautioned that outages may not be granted on the date(s) requested. Contractor shall notify the Contracting Officer at least seven (7) calendar days in advance of any cancellation of any scheduled interruption.

Services shall not be interrupted until receipt of approval of proposed hours and dates are received from the Contracting Officer.

4. QUALITY ASSURANCE_____________________________________________________

A. All items of work not addressed in these General Conditions shall be completed in strict accordance with the manufacturers’ specifications.

B. The quality assurance procedures of this section are a minimum. Provide additional quality control as required by the Contracting Officer. Any additional quality control, which may be required, shall not constitute a change in the contract.

C. The government is not obligated to inspect the Contractor’s work, or to protect the Contractor from the consequences of his work. Government inspection is a general examination of the Contractor’s conduct and workmanship and is solely for the purpose of the government. Government inspectors do not have the authority to accept work, nor is government inspection to be construed as conclusive.

D. Government agents including inspectors, engineers and quality assurance evaluators are not authorized to change the contract without the written approval of the Contracting Officer; this lack of authority extends to all situations in which the action of these agents could be construed as constituting a change.

E. The quality of workmanship is subject to audit by government or government-designated inspectors at any time during the contract. The Contractor shall cooperate fully and provide all information necessary for this audit.

F. The Contractor shall institute immediate action to correct all variances from the contract or General Conditions and employ all procedures necessary to ensure future work shall conform to the requirements of the contract.

G. The Contractor shall submit all requests for changes in writing to the Contracting Officer. Do not proceed with changes without possession of written authorization of the Contracting Officer.

5. CONCEALED WORK_______________________________________________________

The Contracting Officer must approve all items of work including those which are to be concealed. The Contractor shall notify the Contracting Officer of his intention to conceal work 24 hours in advance of concealment.

6. SUBMITTALS______________________________________________________________

A. Approval must be obtained from the Contracting Officer for the material and equipment proposed to be incorporated into the work. Submittals shall be made no later than thirty (30) calendar days after receipt of the Notice to Proceed or as specified by the Contracting Officer. The Contractor is to complete Air Force Form 3000, provided by the Contracting Officer, and submit the required materials for review electronically unless otherwise directed by the CO. The Contracting Officer will return the submittals approved or disapproved within ten (10) calendar days after receipt, by AF Form 3000. If submittals cannot be made within thirty (30) calendar days after Notice to Proceed or as specified by the Contracting Officer, the Contracting Officer shall be advised of the difficulty and the Contractor shall request an extension of time for this task. Approval of submittals does not relieve the Contractor from performance in strict accordance with the contract or Statement of Work, nor does such approval constitute “acceptance” under other conditions of this contract.

B. Any and all “or equal” items or materials proposed by the Contractor to be used in the project shall be submitted for approval.

C. Items required to be submitted for approval are listed in the Statement of Work, and are a minimum.

7. SUPERINTENDENCE BY THE CONTRACTOR________________________________

A. At all times during the performance of the contract and until the work is completed and accepted, the Contractor shall directly superintend the work or assign a competent Superintendent who is satisfactory to the Contracting Officer and has the authority to act for the Contractor.

B. The Superintendent is to oversee and coordinate all project related work being performed. The Superintendent shall be able to read, write, speak and understand the English language.

C. Failure to comply with this requirement may be deemed as cause for a non-compensatory stoppage and suspension of work until the deficiency is remedied.

8. NOTIFICATION PRIOR TO CONSTRUCTION OR DEMOLITION_______________

A. In accordance with the requirements of the Massachusetts Department of Environmental Protection (MADEP), the Contractor shall prepare and submit form BWP AQ 06, Notification Prior to Construction or Demolition, to the Department on behalf of the government. The Contractor is also responsible for the remittance of the $85.00 notification fee. Complete information is available from the Department or on the DEP Web site at mass.gov/dep.

9. STORAGE AND HANDLING_________________________________________________

All new materials shall be transported, stored and handled according to the manufacturers’ written recommendations or as otherwise directed by the Contracting Officer.

10. SCHEDULING_____________________________________________________________

All work shall be carefully scheduled to prevent any excessive shutdown time of utilities or services. The Contractor shall make written request to the Contracting Officer for approval of all work requiring shutdown 48 hours prior to commencement of such work.

11. DAMAGED PROPERTY____________________________________________________

Work shall proceed in a manner which will minimize disturbance or risk of damage to surrounding structures, interior finishes, room furnishings, personal belongings, equipment or base infrastructure. The Contractor shall repair such items damaged by the Contractor in the course of carrying out the work at no additional cost to the government. All repairs shall match adjacent similar existing items in all aspects. All replacements will be in kind.

12. CLEANING UP____________________________________________________________

The Contractor shall at all times, keep the premises free from accumulation of waste materials or rubbish caused by work under this contract. All parts and equipment removed for replacement become the property of the Contractor and shall be removed from the premises. At the end of each work day and upon the completion of all work, the Contractor shall leave interior and exterior property in the condition in which it was found at the beginning of work.

13. SAFETY PRECAUTIONS___________________________________________________

The Contractor shall take all necessary precautions in observing safety regulations in accordance with all Federal OSHA regulations as well as the most recent edition of USACE EM 381-1-1, and shall assume the responsibility to guard against causing of fires and/or explosions and to protect government property. The Contractor shall perform the work in a manner consistent with security and with fire safety regulations especially with regard to exits and exit way access. Temporary closures shall not compromise security or fire safety.

14. ENVIRONMENTAL PROTECTION__________________________________________

There is no known or anticipated asbestos, lead nor any type of regulated hazardous material involved with the work of this project. However, in order to provide for control of all environmental pollution arising from construction activities, the Contractor and his subcontractors, in the performance of this contract, shall comply with all applicable federal state and local laws and regulations concerning environmental protection pollution control and abatement.

15. HAZARDOUS MATERIAL REPORTING_____________________________________

A. The Contractor shall maintain hazardous material inventories and safety data sheets (SDS) for all hazardous materials (as defined in CFR 1910.120, 40 CFR’s 355, 370, & 372) to be stored and used on this installation.

Hazardous materials must be inventoried when received and at project completion. The amounts used shall be maintained for the project duration, and for the calendar year (ending 31 December).

B. Hazardous Materials Inventories, Safety Data Sheets and material quantities used shall be submitted to the Contracting Officer for approval utilizing 439 AW Form 20, Contractor Information Sheet.

C. In the event of a spill, Contractor shall immediately notify the Base Fire Department at 557-1117 as well as the Contracting Officer. The Contractor shall be solely responsible for the expense of any cleanup of such spill, and the cleanup shall be in accordance with the applicable provisions of 40 CFR Part 761.

16. HAUL ROUTES___________________________________________________________

The established haul access routes shall be the only routes used by the Contractor. The Contractor shall ensure that all vehicle operators associated with the project, or those of suppliers, are properly instructed before entering the Base.

17. TEMPORARY STAGING AND CONSTRUCTION AIDS________________________

The Contractor shall provide, erect, maintain, and remove all necessary construction aids that are required for the performance of the work.

18. CONSTRUCTION/DEMOLITION WASTE MANAGEMENT PLAN AND REPORTING

A. Prior to the start of the work, the Contractor shall prepare and submit for approval the Construction Waste Management Plan utilizing the template provided.

B. The Contractor shall record, document and report the total amount of construction/demolition debris and other solid waste that is generated and disposed of under this contract. The Contractor shall also record the total amount of debris and waste that has been diverted through sale, reuse, or recycling and the quantity of waste disposed by landfill or incineration. The waste shall be recorded by weight, but volume in cubic yards will also be acceptable.

Use the Quarterly Solid Waste Disposal Form - updated 1Oct2020 provided for this reporting.

C. Contractor will salvage and reuse the construction/demolition debris to the greatest extent possible. Waste materials that cannot be salvaged and/or reused and have value as being recyclable, shall be recycled. Only materials unable to be economically salvaged or recycled shall be transported to a landfill or incinerator. Revenues or other savings obtained for recycling or returns shall accrue to the Contractor, except revenues generated from Base recycling activities.

D. The records shall be made available to the Contracting Officer during construction and shall be submitted to the Contracting Officer prior to project closeout.

19. REQUIREMENTS FOR AIRFIELD WORK

A. Identifications Badges are required for projects on Westover ARB property.

B. Badges shall be worn at all times while on Base and shall be visible at all times.

C. Contractor shall be responsible for the return of all Identification Badges to the Contracting Officer after completion of the project. Final payment will not be made until all badges are returned.

D. Work in the controlled zones of the airfield. All access to or through the airfield area shall be coordinated on a daily basis with the Contracting Officer and with Airfield Management. The Contractor and his escort, while on the airfield, shall be in radio and visual contact with the Control Tower. The Control Tower and Airfield Management shall be verbally informed when the work is complete and all equipment, labor, and materials have been removed from the airfield by the Contractor on a daily basis. Airfield Management will conduct a visual check of aircraft movement areas to ensure that all contractor tools, equipment, employees, and debris have been removed before opening the aircraft movement areas to aircraft traffic, which in no way relieves the Contractor of his responsibility to accomplish same. The Government will provide a radio for the Contractor’s use during project work.

E. The Contractor shall comply with flight-line driving procedures and restrictions briefed by Airfield Management.

All Contractor personnel operating vehicles or equipment on the airfield must be trained and familiar with required airfield driving policies. Subjects include obtaining clearance, proper tower communications, speed, traffic lanes, right of way and parking protocol, cleaning of tires prior to entering the flight line and other necessary information.

The Contractor shall obtain vehicle passes from Airfield Management for all vehicles operating on the flight line.

F. The Contractor shall provide personnel that possess or can obtain an AF Form 483, Certificate of Competency, for flight-line driving. The training necessary to receive this license is conducted by Air Force personnel. The training lasts one to two days and includes a color blindness test, a computer based training program, a written test and a driving test where the individual will be required to drive on the flight-line and communicate with the Control Tower. An option to this training is for the Contractor to obtain the services of individuals who are currently licensed to operate on the Westover ARB flight-line. Although the base does not maintain a list, there are numerous individuals in the local area who meet this requirement either as Reservists or civilians. The Contractor shall train or hire as many of these individuals as necessary to adequately control all employees within the controlled area during each shift. Single work areas generally require one trained individual while multiple individuals will be required based on the number of areas of concurrent work activity.

G. The Government requires Contractor personnel including subcontractor personnel to be escorted by a Government representative while working in restricted areas of the Base.

H. An escort shall be with the contractor at all times while on the airfield. The escort may travel in the contractors’ vehicle if it is safe to do so and is convenient for the contractor.

I. The Contractor shall provide a responsible Managing Employee to control access to the work area.

J. The Contractor shall enter the project site only at a location approved by the Contracting Officer. Location of daily work sites will be coordinated with Airfield Management, Building 1610, and each day, at a time not later than that approved by the Contracting Officer. The purpose is to maximize safety and security, as the Contractor will be working in the vicinity of active runways/taxiways and other flight operations.

K. Interruptions of the work may occur to provide access for aircraft which have an emergency or when a special mission aircraft is assigned. In this event, the Contractor shall remove all equipment off the operational surfaces of the airfield and beyond the hold position within ten minutes of being notified to clear the work location. A scheduled landing or departure which has been identified to the contractor prior to the contractor beginning work for that work shift shall not be considered an interruption.

L. All routes and access areas shall be continuously cleaned with a vacuum truck to ensure safe airfield operations outside the limits of work.

M. Contractor shall keep his personnel and equipment at least 250 feet from centerline of any runway during takeoff/landing of any aircraft: at least 100 feet from edge of taxiway and aprons/ramps for aircraft movements. All employees shall be equipped with orange reflective vests and hearing protection at all times.

N. Restrict all activities and movement of workmen, supplies, and equipment to the designated project area and access routes.

O. The Contractor shall not allow cameras on the project site nor photographs to be taken without written permission of the Contracting Officer.

END OF DIVISION 1

APPENDIX A

Locus and Project Areas

APPENDIX B

Pictures of Existing Structures

Appendix C

As-built Drawings with Markups

Appendix D

Barrier Plan

Appendix E

Haul Route

TECHNICAL SPECIFICATIONS:

- 02 41 00 Demolition

- 32 11 23 Graded-Crushed Aggregate Base Course

- 32 12 13 Bituminous Tack and Prime Coats

- 32 12 15.13 Asphalt Paving for Airfields

- 32 17 23 Pavement Markings

YTPM 24-3002, Repair TW Tango

SECTION 02 41 00 Page 1

SECTION TABLE OF CONTENTS

DIVISION 02 - EXISTING CONDITIONS

SECTION 02 41 00

DEMOLITION

05/10

PART 1 GENERAL

1.1 REFERENCES

1.2 PROJECT DESCRIPTION

1.2.1 Demolition Plan

1.2.2 General Requirements

1.3 ITEMS TO REMAIN IN PLACE

1.3.1 Existing Construction Limits and Protection

1.4 BURNING

1.5 SUBMITTALS

1.6 QUALITY ASSURANCE

1.6.1 Dust and Debris Control

1.7 PROTECTION

1.7.1 Traffic Control Signs

1.8 FOREIGN OBJECT DAMAGE (FOD)

1.9 EXISTING CONDITIONS

PART 2 PRODUCTS

2.1 FILL MATERIAL

PART 3 EXECUTION

3.1 EXISTING FACILITIES TO BE REMOVED

3.1.1 Utilities and Related Equipment

3.1.1.1 General Requirements

3.1.1.2 Disconnecting Existing Utilities

3.1.2 Paving and Slabs

3.2 DISPOSAL OF REMOVED MATERIALS

3.2.1 Regulation of Removed Materials

3.2.2 Burning on Government Property

3.2.3 Removal from Government Property

-- End of Section Table of Contents --

SECTION 02 41 00 Page 2

SECTION 02 41 00

DEMOLITION

05/10

PART 1 GENERAL

1.1 REFERENCES

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

AMERICAN SOCIETY OF SAFETY PROFESSIONALS (ASSP)

ASSP A10.6 (2006) Safety & Health Program Requirements for Demolition Operations - American National Standard for Construction and Demolition Operations

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 (2014) Safety and Health Requirements Manual

1.2 PROJECT DESCRIPTION

1.2.1 Demolition Plan

Prepare a Demolition Plan and submit proposed demolition, and removal procedures for approval before work is started. Include in the plan a detailed description of methods and equipment to be used for each operation and of the sequence of operations. Provide procedures for safe conduct of the work in accordance with EM 385-1-1. Plan shall be approved by Contracting Officer prior to work beginning.

1.2.2 General Requirements

Do not begin demolition or until authorization is received from the Contracting Officer. Remove rubbish and debris from the project site; do not allow accumulations on airfield pavements. The work includes demolition and removal of resulting rubbish and debris. Remove rubbish and debris from Government property daily, unless otherwise directed. Store materials that cannot be removed daily in areas specified by the Contracting Officer. In the interest of occupational safety and health, perform the work in accordance with EM 385-1-1, Section 23, Demolition, and other applicable Sections.

SECTION 02 41 00 Page 3

1.3 ITEMS TO REMAIN IN PLACE

Take necessary precautions to avoid damage to existing items to remain in place, to be reused, or to remain the property of the Government. Repair or replace damaged items as approved by the Contracting Officer.

Coordinate the work of this section with all other work indicated.

1.3.1 Existing Construction Limits and Protection

Do not disturb existing construction beyond the extent indicated or necessary for installation of new construction. Provide protective measures to control accumulation and migration of dust and dirt in all work areas. Remove snow, dust, dirt, and debris from work areas daily.

1.4 BURNING

The use of burning at the project site for the disposal of refuse and debris will not be permitted.

1.5 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Westover General Conditions Paragraph 6 Submittals:

SD-01 Preconstruction Submittals

Demolition Plan; G Existing Conditions

1.6 QUALITY ASSURANCE

Comply with federal, state, and local hauling and disposal regulations.

In addition to the requirements of the "Contract Clauses," conform to the safety requirements contained in ASSP A10.6. Comply with the Environmental Protection Agency requirements specified. Use of explosives will not be permitted.

1.6.1 Dust and Debris Control

Prevent the spread of dust and debris on airfield pavements and avoid the creation of a nuisance or hazard in the surrounding area. Do not use water if it results in hazardous or objectionable conditions such as, but not limited to, ice, flooding, or pollution. Vacuum and dust the work area daily. Sweep pavements as often as necessary to control the spread of debris that may result in foreign object damage potential to aircraft.

SECTION 02 41 00 Page 4

1.7 PROTECTION

1.7.1 Traffic Control Signs

a. Where aircraft safety is endangered in the area of removal work, use low profile traffic barricades with flashing lights. Barricades are to be heavy enough and placed in a manner to prevent displacement by wind, jet, or prop blast. Notify the Contracting Officer prior to beginning such work.

1.8 FOREIGN OBJECT DAMAGE (FOD)

Aircraft and aircraft engines are subject to FOD from debris and waste material lying on airfield pavements. Remove all such materials that may appear on operational aircraft pavements due to the Contractor's operations. If necessary, the Contracting Officer may require the Contractor to install a temporary barricade at the Contractor's expense to control the spread of FOD potential debris. The barricade shall include a fence covered with a fabric designed to stop the spread of debris. Anchor the fence and fabric to prevent displacement by winds or jet/prop blasts.

Remove barricade when no longer required.

1.9 EXISTING CONDITIONS

Before beginning any demolition or deconstruction work, survey the site and examine the drawings and specifications to determine the extent of the work. Record existing conditions in the presence of the Contracting Officer showing the condition of structures and other facilities adjacent to areas of alteration or removal. D i g i t a l p hotographs will be acceptable as a record of existing conditions. Submit survey results.

PART 2 PRODUCTS

2.1 FILL MATERIAL

a. Comply with excavating, backfilling, and compacting procedures for soils used as backfill material to fill voids, depressions or excavations resulting from demolition of structures.

PART 3 EXECUTION

3.1 EXISTING FACILITIES TO BE REMOVED

Inspect and evaluate existing structures onsite for reuse. Existing construction scheduled to be removed for reuse shall be disassembled.

Dismantled and removed materials are to be separated, set aside, and prepared as specified, and stored or delivered to a collection point for reuse, remanufacture, recycling, or other disposal, as specified.

Materials shall be designated for reuse onsite whenever possible.

3.1.1 Utilities and Related Equipment

3.1.1.1 General Requirements

Do not interrupt existing utilities serving occupied or used facilities, except when authorized in writing by the Contracting Officer. Do not interrupt existing utilities serving facilities occupied and used by the Government except when approved in writing and then only after temporary utility services have been approved and provided.

SECTION 02 41 00 Page 5

3.1.1.2 Disconnecting Existing Utilities

When utility lines are encountered but are not indicated on the drawings, notify the Contracting Officer prior to further work in that area.

3.1.2 Paving and Slabs

Remove concrete and asphaltic concrete paving and slabs as indicated.

Provide neat sawcuts at limits of pavement removal as indicated. Pavement and slabs indicated to be demolished shall be removed from the Installation at Contractor's expense.

3.2 DISPOSAL OF REMOVED MATERIALS

3.2.1 Regulation of Removed Materials

Dispose of debris, rubbish, scrap, and other non-salvageable materials resulting from removal operations with all applicable federal, state and local regulations. Storage of removed materials on the project site is prohibited.

3.2.2 Burning on Government Property

Burning of materials removed from demolished and deconstructed structures will not be permitted on Government property.

3.2.3 Removal from Government Property

Transport waste materials removed from demolished structures, except waste soil, from Government property for legal disposal.

-- End of Section --

SECTION 32 11 23 Page 1

DIVISION 32 - EXTERIOR IMPROVEMENTS

SECTION 32 11 23

GRADED-CRUSHED AGGREGATE BASE COURSE

08/17

1.1 NOT USED

1.2 REFERENCES

1.3 DEFINITIONS

1.3.1 Graded-Crushed Aggregate Base Course

1.3.2 Degree of Compaction

1.4 SUBMITTALS

1.5 EQUIPMENT, TOOLS, AND MACHINES

1.6 QUALITY ASSURANCE

1.6.1 Sampling

1.6.2 Tests

1.6.2.1 Sieve Analysis

1.6.2.2 Liquid Limit and Plasticity Index

1.6.2.3 Moisture-Density Determinations

1.6.2.4 Field Density Tests

1.6.2.5 Wear Test

1.6.2.6 Soundness

1.6.2.7 Weight of Slag

1.7 ENVIRONMENTAL REQUIREMENTS

PART 2 PRODUCTS

2.1 AGGREGATES

2.1.1 Coarse Aggregate

2.1.1.1 Not Used

2.1.1.2 Graded-Crushed Aggregate Base Course

2.1.2 Fine Aggregate

2.1.2.1 Not Used

2.1.2.2 Graded-Crushed Aggregate Base Course

2.1.3 Gradation Requirements

2.2 LIQUID LIMIT AND PLASTICITY INDEX

2.3 TESTS, INSPECTIONS, AND VERIFICATIONS

2.3.1 Initial Tests

2.3.2 Approval of Material

PART 3 EXECUTION

3.1 GENERAL REQUIREMENTS

3.2 OPERATION OF AGGREGATE SOURCES

3.3 STOCKPILING MATERIAL

3.4 PREPARATION OF UNDERLYING COURSE OR SUBGRADE

3.5 GRADE CONTROL

3.6 MIXING AND PLACING MATERIALS

3.7 LAYER THICKNESS

SECTION 32 11 23 Page 2

3.8 COMPACTION

3.9 FINISHING

3.10 SMOOTHNESS TEST

3.11 TRAFFIC

3.12 MAINTENANCE

3.13 DISPOSAL OF UNSATISFACTORY MATERIALS

SECTION 32 11 23 Page 3

SECTION 32 11 23

GRADED-CRUSHED AGGREGATE BASE COURSE

08/17

PART 1 GENERAL

1.1 NOT USED

1.2 REFERENCES

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

AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS

(AASHTO)

AASHTO T 88 (2013) Standard Method of Test for Particle Size Analysis of Soils

ASTM INTERNATIONAL (ASTM)

ASTM C117 (2017) Standard Test Method for Materials Finer than 75-um (No. 200) Sieve in Mineral Aggregates by Washing

ASTM C127 (2015) Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Coarse Aggregate

ASTM C128 (2015) Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Fine Aggregate

ASTM C131/C131M (2014) Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine

ASTM C136/C136M (2014) Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates

ASTM C29/C29M (2017a) Standard Test Method for Bulk Density ("Unit Weight") and Voids in Aggregate

ASTM C88 (2018) Standard Test Method for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate

ASTM D1556/D1556M (2015; E 2016) Standard Test Method for Density and Unit Weight of Soil in Place by Sand-Cone Method

ASTM D1557 (2012; E 2015) Standard Test Methods for

SECTION 32 11 23 Page 4

Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000 ft-lbf/ft3) (2700 kN-m/m3)

ASTM D2167 (2015) Density and Unit Weight of Soil in Place by the Rubber Balloon Method

ASTM D2487 (2017) Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System)

ASTM D4318 (2017; E 2018) Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils

ASTM D5821 (2013; R 2017) Standard Test Method for Determining the Percentage of Fractured Particles in Coarse Aggregate

ASTM D6938 (2017a) Standard Test Method for In-Place Density and Water Content of Soil and Soil-Aggregate by Nuclear Methods (Shallow Depth)

ASTM D75/D75M (2014) Standard Practice for Sampling Aggregates

ASTM E11 (2016) Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves

1.3 DEFINITIONS

For the purposes of this specification, the following definitions apply.

1.3.1 Graded-Crushed Aggregate Base Course

Graded-crushed aggregate (GCA) base course is well graded, crushed, durable aggregate uniformly moistened and mechanically stabilized by compaction.

1.3.2 Degree of Compaction

Degree of compaction required, except as noted in the second sentence, is expressed as a percentage of the maximum laboratory dry density obtained by the test procedure presented in ASTM D1557 abbreviated as a percent of laboratory maximum dry density.

1.4 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for Contractor Quality Control approval. Submit the following in accordance with Section 01 33 00.

SUBMITTAL PROCEDURES:

SD-03 Product Data

Plant, Equipment, and Tools; G

SECTION 32 11 23 Page 5

SD-06 Test Reports

Initial Tests; G

1.5 EQUIPMENT, TOOLS, AND MACHINES

All plant, equipment, and tools used in the performance of the work will be subject to approval by the Contracting Officer before the work is started.

Maintain all plant, equipment, and tools in satisfactory working condition at all times. Submit a list of proposed equipment, including descriptive data. Use equipment capable of minimizing segregation, producing the required compaction, meeting grade controls, thickness control, and smoothness requirements as set forth herein.

1.6 QUALITY ASSURANCE

Sampling and testing are the responsibility of the Contractor. Perform sampling and testing using an approved testing laboratory. Test the materials to establish compliance with the specified requirements and perform testing at the specified frequency. Furnish copies of test results to the Contracting Officer within 24 hours of completion of the tests.

1.6.1 Sampling

Take samples for laboratory testing in conformance with ASTM D75/D75M.

When deemed necessary, the sampling will be observed by the Contracting Officer.

1.6.2 Tests

1.6.2.1 Sieve Analysis

Perform sieve analysis in conformance with ASTM C117 and ASTM C136/C136M using sieves conforming to ASTM E11. Perform particle-size analysis of the soils in conformance with AASHTO T 88.

1.6.2.2 Liquid Limit and Plasticity Index

Determine liquid limit and plasticity index in accordance with ASTM D4318.

1.6.2.3 Moisture-Density Determinations

Determine the laboratory maximum dry density and optimum moisture content in accordance with paragraph DEGREE OF COMPACTION.

1.6.2.4 Field Density Tests

Measure field density in accordance with ASTM D1556/D1556M, ASTM D2167 or ASTM D6938. For the method presented in ASTM D1556/D1556M use the base plate as shown in the drawing. For the method presented in ASTM D6938 check the calibration curves and adjust them, if necessary, using only the sand cone method as described in paragraph Calibration, of the ASTM

SECTION 32 11 23 Page 6 publication. Tests performed in accordance with ASTM D6938 result in a wet unit weight of soil and ASTM D6938 will be used to determine the moisture content of the soil. Also check the calibration curves furnished with the moisture gauges along with density calibration checks as described in ASTM D6938. Make the calibration checks of both the density and moisture gauges using the prepared containers of material method, as described in paragraph Calibration of ASTM D6938, on each different type of material being tested at the beginning of a job and at intervals as directed.

Submit calibration curves and related test results prior to using the device or equipment being calibrated.

1.6.2.5 Wear Test

Perform wear tests on GCA course material in conformance with

ASTM C131/C131M.

1.6.2.6 Soundness

Perform soundness tests on GCA in accordance with ASTM C88.

1.6.2.7 Weight of Slag

Determine weight per cubic foot of slag in accordance with ASTM C29/C29M on the GCA course material.

1.7 ENVIRONMENTAL REQUIREMENTS

Perform construction when the atmospheric temperature is above 35 degrees F.

When the temperature falls below 35 degrees F, protect all completed areas by approved methods against detrimental effects of freezing. Correct completed areas damaged by freezing, rainfall, or other weather conditions to meet specified requirements.

PART 2 PRODUCTS

2.1 AGGREGATES

Provide GCA consisting of clean, sound, durable particles of crushed stone, crushed slag, crushed gravel, angular sand, or other approved material.

Provide GCA that is free of silt and clay as defined by ASTM D2487, organic matter, and other objectionable materials or coatings. The portion retained on the No. 4 sieve is known as coarse aggregate; that portion passing the No. 4 sieve is known as fine aggregate. When the coarse and fine aggregate is supplied form more than one source, provide aggregate from each source that meets the specified requirements.

2.1.1 Coarse Aggregate

Provide coarse aggregates with angular particles of uniform density.

Separately stockpile coarse aggregate supplied from more than one source.

a. Crushed Gravel: Provide crushed gravel that has been manufactured by crushing gravels and that meets all the requirements specified below.

b. Crushed Stone: Provide crushed stone consisting of freshly mined quarry rock, meeting all the requirements specified below.

c. Crushed Slag: Provide crushed slag that is an air-cooled blast-furnace product having an air dry unit weight of not less than 70 pcf as

SECTION 32 11 23 Page 7 determined by ASTM C29/C29M, and meets all the requirements specified below.

2.1.1.1 Not Used

2.1.1.2 Graded-Crushed Aggregate Base Course

The percentage of loss of GCA coarse aggregate must not exceed 40 percent loss when tested in accordance with ASTM C131/C131M. Provide GCA coarse aggregate that does not exhibit a loss greater than 18 percent weighted average, at five cycles, when tested for soundness in magnesium sulfate, or 12 percent weighted average, at five cycles, when tested in sodium sulfate in accordance with ASTM C88. Provide aggregate that contains no more than 20 percent flat and elongated particles for the fraction retained on the 1/2 inch sieve nor 20 percent for the fraction passing the 1/2 inch sieve.

A flat particle is one having a ratio of width to thickness greater than 3;

an elongated particle is one having a ratio of length to width greater than

3. In the portion retained on each sieve specified, the crushed aggregate must contain at least 90 percent by weight of crushed pieces having two or more freshly fractured faces determined in accordance with ASTM D5821.

When two fractures are contiguous, the angle between planes of the fractures must be at least 30 degrees in order to count as two fractured faces. Manufacture crushed gravel from gravel particles 90 percent of which by weight are retained on the maximum size sieve listed in TABLE 1.

2.1.2 Fine Aggregate

Provide fine aggregates consisting of angular particles of uniform density.

2.1.2.1 Not Used

2.1.2.2 Graded-Crushed Aggregate Base Course

Provide GCA fine aggregate consisting of angular particles produced by crushing stone, slag, or gravel that meets the requirements for wear and soundness specified for GCA coarse aggregate. Produce fine aggregate by crushing only particles larger than No. 4 sieve in size. Provide fine aggregate that contains at least 90 percent by weight of particles having two or more freshly fractured faces in the portion passing the No. 4 sieve and retained on the No. 10 sieve, and in the portion passing the No. 10 sieve and retained on the No. 40 sieve. Manufacture fine aggregate from gravel particles 95 percent of which by weight are retained on the 1/2 inch sieve.

2.1.3 Gradation Requirements

Apply the specified gradation requirements to the completed base course.

Provide aggregates that are continuously well graded within the limits specified in TABLE 1. Use sieves that conform to ASTM E11. Contractor may choose gradation based on local availibility of materials. Only one gradation may be used for the project.

SECTION 32 11 23 Page 8

TABLE 1. GRADATION OF AGGREGATES

Percentage by Weight Passing Square-Mesh Sieve

Sieve Designation No. 1 No. 2 No. 3

2 inch 100 ---- ---- 1-1/2 inch 70-100 100 ---- 1 inch 45-80 60-100 100 1/2 inch 30-60 30-65 40-70 No. 4 20-50 20-50 20-50 No. 10 15-40 15-40 15-40 No. 40 5-25 5-25 5-25 No. 200 0-8 0-8 0-8

NOTE 1: Particles having diameters less than 0.02 mm must not be in excess of 3 percent by weight of the total sample tested as determined in accordance with AASHTO T 88.

NOTE 2: The values are based on aggregates of uniform specific gravity.

If materials from different sources are used for the coarse and fine aggregates, test the materials in accordance with ASTM C127 and ASTM C128 to determine their specific gravities. Correct the percentages passing the various sieves as directed by the Contracting Officer if the specific gravities vary by more than 10 percent.

2.2 LIQUID LIMIT AND PLASTICITY INDEX

Apply liquid limit and plasticity index requirements to the completed course and to any component that is blended to meet the required gradation. The portion of any component or of the completed course passing the No. 40 sieve must be either nonplastic or have a liquid limit not greater than 25 and a plasticity index not greater than 5.

2.3 TESTS, INSPECTIONS, AND VERIFICATIONS

2.3.1 Initial Tests

Perform one of each of the following tests, on the proposed material prior to commencing construction, to demonstrate that the proposed material meets all specified requirements when furnished. Complete this testing for each source if materials from more than one source are proposed.

a. Sieve Analysis including 0.02 mm material.

b. Liquid limit and plasticity index.

c. Moisture-density relationship.

d. Wear.

e. Soundness.

f. Weight per cubic foot of Slag.

SECTION 32 11 23 Page 9

Submit certified copies of test results for approval not less than 30 days before material is required for the work.

2.3.2 Approval of Material

Tentative approval of material will be based on initial test results.

PART 3 EXECUTION

3.1 GENERAL REQUIREMENTS

When the GCA is constructed in more than one layer, clean the previously constructed layer of loose and foreign matter by sweeping with power sweepers or power brooms, except that hand brooms may be used in areas where power cleaning is not practicable. Provide adequate drainage during the entire period of construction to prevent water from collecting or standing on the working area.

3.2 OPERATION OF AGGREGATE SOURCES

Condition aggregate sources on private lands in accordance with local laws or authorities.

3.3 STOCKPILING MATERIAL

Clear and level storage sites prior to stockpiling of material. Stockpile all materials, including approved material available from excavation and grading, in the manner and at the locations designated. Stockpile aggregates on the cleared and leveled areas designated by the Contracting Officer to prevent segregation. Stockpile materials obtained from different sources separately.

3.4 PREPARATION OF UNDERLYING COURSE OR SUBGRADE

Clean the underlying course or subgrade of all foreign substances prior to constructing the base course(s). Do not construct base course(s) on underlying course or subgrade that is frozen. Construct the surface of the underlying course or subgrade to meet specified compaction and surface tolerances. Correct ruts or soft yielding spots in the underlying courses, areas having inadequate compaction, and deviations of the surface from the specified requirements set forth herein by loosening and removing soft or unsatisfactory material and adding approved material, reshaping to line and grade, and recompacting to specified density requirements. For cohesionless underlying courses or subgrades containing sands or gravels, as defined in ASTM D2487, stabilize the surface prior to placement of the base course(s). Stabilize by mixing GCA into the underlying course and compacting by approved methods. Consider the stabilized material as part of the underlying course and meet all requirements of the underlying course. Do not allow traffic or other operations to disturb the finished underlying course and maintain in a satisfactory condition until the base course is placed.

3.5 GRADE…