09r0006 specs.pdf

TECHNICAL SPECIFICATIONS

FOR

PAVEMENTS MAINTENANCE AND REPAIR

INDEFINITE DELIVERY INDEFINITE QUANTITY CONTRACT

PREPARED BY AFRL/RIOC

AIR FORCE RESEARCH LABORATORY

ROME RESEARCH SITE

ROME, NEW YORK

PROJECT NR: ULDF 09-0414 DATED: 03 February 2009

TABLE OF CONTENTS

SECTION TITLE PAGE

01000 General Requirements 4

01010 Summary of Work 10

01011 Safety Engineering and Maintenance 13

01501 Environmental Protection 16

02000 Testing Laboratory Services 17

02200 Excavation, Embankment and Compaction 19

02250 Trenching, Backfilling and Compacting 25

02251 Soil Sterilization 33

02275 Sub-Drainage Systems 34

02300 Temporary Soil Erosion and Water Pollution Control 37

02400 Sub-Base Course 39

02480 Landscape Plantings & Turf Establishment 42

02481 Topsoil 43

02576 Crack Sealing of Asphalt Concrete Pavements 45

02577 Patching of Asphalt Concrete Pavements 47

02578 Bituminous Surface Treatment 49

02583 Reclaimed Asphalt Concrete Pavement 50

02585 Pavement Reinforcing Fabric 52

SECTION TITLE PAGE

02600 Asphaltic Concrete Pavement 55

02661 Water Lines 57

02700 Sewerage and Drainage 60

02740 Septic Systems 69

02800 Curbing and Gutters 78

03300 Concrete 82

03400 Fencing 90

03500 Guide Signs, Traffic Signs and Devices 93

03600 Cleaning, Preparing and Painting For Reflectorized 96 Pavement Markings

03700 Underground Electrical Work 98

03930 Concrete Rehabilitation 103

SECTION 01000

GENERAL REQUIREMENTS

1.0 WORK SCHEDULE

Working hours for the contractor will normally be between the hours of 0700 and 1600, excluding Saturdays, Sundays and federal holidays. If the contractor desires to work during periods other than above, additional Government inspection forces may be required. The contractor must make his/her request to the Contracting Officer three days in advance of his/her intention to work during other periods to allow for assignment of additional inspection forces. If such force is reasonably available, the Contracting Officer may authorize the contractor to perform work during periods other than normal duty hours/days.

2.0 DIGGING PERMITS

A. The contractor shall have an approved Contracting Officer's Work Clearance Permit in his possession before any excavation work is permitted:

1. Fourteen (14) calendar days prior to any planned excavation, the contractor shall notify the Contracting Officer in writing of his request to obtain a Work Clearance Permit (digging permit).

2. Work clearance permits are processed by the Contract Management Office (RIOCO) of Rome Research Site Civil Engineering upon receipt of request from the Contracting Officer.

3. The contractor shall have staked the area of excavation prior to initiating request.

4. Upon receipt of request, RIOCO will notify AFRL/RIOCC and other appropriate offices for location of underground communication and other utility lines within the staked areas of excavation.

5. The contractor shall hand-excavate the immediate area where communication and utility lines are identified. In areas of uncertainty where communication and utility lines are known to exist, but the location is uncertain, Government personnel, given a minimum of fourteen (14) days notice by RIOCO, will indicate locations in the field.

6. The contractor shall hand excavate the immediate area where communication and utility lines have been located in the field.

7. All excavation work in the above described known and uncertain areas where communication and other utilities have been identified and staked shall be hand-excavated by the contractor a minimum of five feet on both sides of staked areas.

8. If staked lines in these areas are not found, the contractor shall notify RIOCO immediately before proceeding with any further excavation.

B. The contractor shall notify the Contracting Officer fourteen (14) days prior to the start of demolition or excavation work.

3.0 ELECTRICAL SERVICE AND COMMUNICATIONS FACILITIES

The contractor will not disturb electrical and/or communications facilities and wiring. Where such facilities require removal, the contractor shall notify the Contracting Officer at least seven calendar days in advance of the requirement, for the accomplishment of such removals by the Government. The contractor shall allow the telephone company and communication personnel to be present during digging. If electrical and/or communication facilities are damaged by the contractor, the contractor shall restore them within 24 hours.

4.0 EXISTING FACILITIES

The existing dimensions and locations shown on the applicable drawings are for approximation purposes only. Failure to verify the dimensions and locations will be at the contractor's risk and shall not relieve the contractor from accomplishing the work required by the contract at the price awarded by the government.

5.0 SUBMITTALS

Submittals will be required on materials used under each proposal. Each submittal shall include information as described in the technical specifications or as shown on the drawings. Submittals will accompany the contractor's proposal on each project. Once an item of material or equipment has been approved, the contractor will not be required to resubmit with the following exception: if, at any time during the duration of this contract, the contractor desires to change materials from those originally approved, his new materials shall be resubmitted to and approved by the Contracting Officer prior to incorporation into the project. Submission will be on an AF Form 3000.

6.0 MATERIAL REMOVED

All materials removed from and not reused in the project and specified herein or shown on the applicable drawings remain the property of the Government, except as noted below: The Contracting Officer will determine if materials removed from the job site are salvageable or unsalvageable. Salvageable materials shall be disposed of as directed by the Contracting Officer. Materials to be removed shall be removed without damage to adjacent areas. All damage resulting from removal shall be repaired by the contractor with materials of like nature, type and construction as were damaged or exist adjacent to the areas to be repaired. When material is designated as unsalvageable, the material from that point shall become the property of the contractor. The disposal of any materials removed from this project shall be accomplished in accordance with all applicable state, federal and local statutes, regulations, and executive orders in effect at the time of disposal. Materials excavated shall be removed from the work site on the day of excavation.

7.0 CONTRACTOR STORAGE

An area for each delivery order shall be provided to the contractor by the Government. No permanent storage area is available at the site. An open storage area will be provided. Security shall be the responsibility of the contractor. The contractor shall keep the storage area neat, orderly and clear of all debris. The contractor shall not allow trash or other debris to scattered from his area by wind or other means. The open area provided to the contractor must be surrounded by a chain link fence and must be maintained in a serviceable condition at all times.

The fence line will be kept clear of weeds and trash. The grass area around the open storage area for a distance of 25 ft. will be maintained (cut) as a lawn.

8.0 UTILITIES SERVICE

The Government will provide utilities (electricity, gas and water) when readily available at the construction site. No utilities will be provided by the government at the contractor open storage area. Hookup is a contractor responsibility. The contractor shall return the hook up sites to their original configuration should they be altered to facilitate the hook up.

9.0 NOT USED

10.0 SCHEDULING WORK

a. Before any or the work is initiated under an individual delivery order, the contractor shall confer with the Contracting Officer or his representative(s) and agree on a sequence of procedure; means of access to worksite; space for storage of materials and equipment;

delivery of materials and use of approaches; means of communications; the location of eating spaces and restrooms for contractor's employees.

b. Delivery of materials and equipment shall be made with a minimum of interference to Government operations and personnel.

c. The work shall, so far, as practicable, be done in definite sections or divisions and confined to limited areas which shall be completed before work in other sections or divisions is begun.

11.0 CONSTRUCTION SITE MAINTENANCE

Store all supplies and equipment on protected site so as to preclude theft or damage. Maintain site in a neat and orderly manner.

12.0 NOISE CONTROL

Comply with all applicable state, local and installation laws, ordinances, and regulations relative to noise control.

13.0 TRUCKING

Loose debris on trucks leaving the site shall be loaded in a manner that will prevent dropping of material on streets and conform to local ordinances and laws. Fasten suitable cover, such as a tarpaulin, over the load before entering surrounding streets. The contractor shall be responsible for cleaning up any materials that fall from trucks.

14.0 GOVERNMENT LIABILITY

The Government shall not be liable for any loss or damage to the contractor's property, including stock or for expense incidental to such loss or damage.

15.0 TOILET FACILITIES, (WORK RELATED)

Contractor's personnel will be permitted to use existing toilet facilities if available on the premises subject to approval of the Contracting Officer or his designated representative.

16.0 AS-BUILT STATEMENT

The Government does not guarantee the accuracy or adequacy of existing as-built drawings. It is the contractor's responsibility to verify all as-built conditions prior to the issuance of each delivery order.

17.0 REQUIRED DATE FOR MATERIAL SUBMITTAL/SHOP DRAWINGS

a. Contractor shall submit shop drawings and material submittals within five (5) days after receipt of the Delivery Order, or as otherwise established by the Contracting Officer.

b. All shop drawings and materials submittals shall be prepared and submitted in accordance with paragraph entitled "Preparation of Material Approval Submittals".

19.0 FIRE PROTECTION

The contractor shall perform all work in a fire-safe manner in accordance with fire prevention standards of the Rome Research Site. The contractor shall have an approved fire extinguisher at the site at all times during working operations. HALON AND C02 TYPE FIRE EXTINGUISHERS ARE NOT AUTHORIZED FOR USE. The contractor will notify the construction representative, before working with any flame or spark producing equipment such as tar buckets, grinders, or welders, for approval of the contractors’ safety measures and to obtain a "Burn Permit" for this type of work.

20.0 SECURITY REQUIREMENTS

a. The work to be done on this project is located in and around area’s that are under the scrutiny of the Department of Defense Police assigned to the RRS Information Directorate. To gain access to the area(s) to examine the work to be done for job estimation purposes; arrangements must be made through the Contracting Office.

Contractor personnel will be escorted into the area(s) for the purpose of project estimation.

b. When it has been determined which Contractor will accomplish the project a Visit Request from the company, preferably on Company letterhead, will be necessary prior to initial work commencement. The Visit Request letter needs to be signed by the Company President or Director of Human Resources. The Visit Request will also be used as the Entry Authority List. The Contractor will supply the Visit Request to Security (AFRL/RIOF) through the Contracting Office. The Visit Request can be done via RRS Visit Request Form, AFMC Form 97 (found on the AFRL web page, https://rlweb.rl.af.mil/security/) or a simple Company Letterhead letter identifying all personnel who will be employed during the work. The request will contain a full name to include a middle initial (Frank A. Dude), date of birth (14 Dec 1953), state of driver’s license issuance and place of birth (Austin, Texas). This information will be used to do a Local Files Check. This check will provide Drivers License Info, Wants & Warrants and Protection Orders and will also provide information on Illegal Immigration and suspected terrorist affiliations. The Local Files Check will also be accomplished prior to work commencing. If the individual is not a US Citizen they will not be allowed within the complex or facilities. If, the individual is not a US Citizen but has a Green Card, Form I- 551 or has the I-551 stamp on their passport, Security will need to see either one. There will be no foreign national workers allowed on the Rome Research Site.

c. Provide the Company’s phone number and a Project Leaders or Supervisor/Foremen cell-phone number is necessary for the Law Enforcement Desk Sergeant.

d. All facilities are entered using a magnetic media entry badge. Any personnel such as Supervisor/Foremen or Project Leaders who may need building access for meetings etc, during contract period, can acquire a Local Contractor Entry Badge through the Division/Branch with oversight of the work. This will be accomplished with the RRS Form 110 (Unescorted Visitor Badge). The Security Visitation Office is located in the lobby of Bldg 3, West Wing. This badge will be worn at all times within the facility.

These badges will be returned to the Contracting Officer’s Technical Representative upon completion of the final inspection and Acceptance of Work. Any badges lost during the period of work will be reported to Security as soon as possible.

e. Access to the RRS Complex is controlled by a Main Gate on Brooks Rd, located just west of the Otis & Brooks intersection. Identification for the contractor to enter with a vehicle will be an access list supported by the electronic badge issued. All commercial vehicles entering the gate will be searched. One-time deliveries can be escorted from the gate to delivery point by project personnel.

f. All commercial vehicles are searched prior to entry into the RRS Complex. Vehicle operators will be aware of the vehicle search pull-off area prior to approaching the Main Gate. A search of the vehicle will be conducted prior to its entry. All vehicles not needed for delivery of equipment or tools will be parked in the visitor parking area unless cleared through Security. There are No vehicles allowed within 25 meters (80 ft) of the RRS facilities.

g. All personnel should be aware that the Rome Research Site is Property of the United States Air Force. All personnel will follow all posted signage.

h. Contractor personnel will be notified by RRS Police of any emergencies which would require an evacuation or work stoppage, such as an increase in the Force Protection Condition.

i. Building/Room Keys: If the contractor needs access to area(s) that are locked (i.e.

mechanical rooms, janitor’s closet, etc.), a request for entry of at least 2 working days prior to the need for access will be submitted to AFRL/RIOC construction representative.

The area(s) will be provided on a daily basis. The area(s) will be locked down at the end of the days work.

j. The 24 hour Desk Sgt can be reached at 330-2961.

SECTION 01010

SUMMARY OF WORK

1.0 GENERAL

1.1 Location: The work to be accomplished under this project is at Air Force Research Laboratory, Rome Research Site (RRS).

1.2 Description: The project consists of furnishing all labor, materials and equipment required for a broad range of maintenance, repair, and minor construction work on various pavements, drainage facilities and associated grounds at Air Force Research Laboratory (AFRL), Rome Research Site, Rome, New York and all associated sites (Newport Test Annex 1, Newport Test Annex 2, and Stockbridge Test Annex) as well as the Defense Finance and Accounting Services.

2.0 PRODUCTS

2.1 Submittal Requirements: Reproducible shop drawings, manufacturers' data, dated certifications and test reports, and samples constitute the project submittals. All submittals shall have an AF Form 3000 attached and be submitted in triplicate.

3.0 EXECUTION

3.1 Fire Protection: The contractor shall be responsible for furnishing adequate and proper fire protection for all phases of the contract work.

3.2 Methods and Materials: Unless specified otherwise here-in all work and materials shall conform with the requirements of:

"Standard Specifications - Construction and Materials" By

Department of Transportation State of New York

Dated: May 1, 2008

3.2.1 All references to "New York State Department of Transportation", "Commissioner of Transportation", "Regional Director", "Regional Office", etc., shall be understood to mean "United States Government and/or Contracting Officer.

3.2.2 All New York State Department of Transportation paragraphs concerning Methods of Measurement and Basis of Payment shall be disregarded.

3.2.3 Hard copies of "Standard Specifications" may be obtained for a nominal fee from:

Plans Sales Department - Room #1206 Region No. 2 New York State Department of Transportation 207 Genesee Street Utica, NY 13501 Phone: 315-793-2438

Electronic copies may be downloaded at no cost at https://www.nysdot.gov/main/business-center/engineering/specifications

3.3 Reference Standards and Publications: The standards and publications listed in each section of these specifications form part of these specifications to the extent referenced. The contractor shall conform to the provision of the dated issue of the listed standard or publication.

3.3.1 Standard details are available in the NYS Comprehensive Pavement Design Manual which can be downloaded at no cost at https://www.nysdot.gov/divisions/engineering/design/dqab/cpdm

3.4 All work under this contract shall meet or exceed trade standards, and in a condition acceptable to the Contracting Officer. This shall be the required condition at the time of acceptance of all work under this contract.

3.5 Clean-up: The contractor shall at all times, keep the construction area, including storage areas used by him, free from accumulation of waste materials or rubbish. Prior to completion of the work each day, remove from the construction site all waste materials or rubbish. Upon completion of the construction, the contractor shall leave the work premises in a clean, neat condition.

3.6 Hazardous Substances: The contractor shall report any spill of oil or hazardous material to the New York State Spill Hotline at 1-800-457-7362 and RIOCV at 330-2098 and take every reasonable precaution to prevent or contain the spillage of oil or other hazardous substances.

3.7 Traffic and Coordination of Work: The contractor shall coordinate all phases of work with the Contracting Officer. A detailed time schedule shall be submitted within five (5) calendar days after receipt of the written Notice to Proceed. The submittal shall also include a layout of traffic flow including a description of permanent, temporary, and handheld signs and safety gear to be used by the flag persons. It is the intent of this contract for all work to be performed in an orderly manner with minimum disturbance and inconvenience to vehicular and pedestrian traffic.

Work must progress and be complete in one area prior to commencement of a new area of work except as permitted by the Contracting Officer. The contractor shall provide traffic control; no assistance from Security Police will be provided. If the contractor uses off-duty base personnel as flag persons, the contractor must get their use cleared through the Contracting Officer.

3.8 Protection of Work Site: The contractor shall be responsible for protection of his work and existing Government property. Any items of Government property damaged by the contractor's operations shall be repaired or replaced.

3.9 Burning: Burning of material and debris is not permitted.

3.10 Special Conditions:

3.10.1 The contractor shall be responsible for the furnishing and placing of barricades to prevent vehicular traffic access within the limit of work.

3.10.2 The contractor shall be responsible for furnishing and installing barricade barrels, flagging and ropes around all areas of excavation. Barricades shall be equipped with flashing amber beacons, operating 1/2 hour before dusk to 1/2 hour after dawn.

3.10.3 At the end of every work day, all excavated areas shall be securely barricaded.

3.10.4 If the contractor moves from one area of excavation to another, the work area with no workmen present shall be securely barricaded during the workday as well as after hours.

3.11 Blasting: Blasting will not be permitted.

3.12 As-Built Drawings: A marked up set of contract drawings shall be submitted by the contractor at the completion of each delivery order showing the new construction as well as any utilities uncovered/located during construction. Final payment for the delivery order will not be made until after receipt and approval of the as-built drawings.

3.13 Subsurface Information: Subsurface soil borings logs may be shown on the drawings. The sample of materials taken from subsurface investigations are not available. These data represent the best subsurface information available; however, variations may exist in the subsurface between boring locations.

3.14 Dust Barriers: The contractor shall maintain dust barriers at all times. Methods such as spraying shall be employed to prevent dust from being raised. Extra care shall be taken when working near buildings. Dust barriers must be placed over entrance doors to prevent any dust from entering buildings. If any dust penetrates building entrances, the contractor shall be totally responsible to clean all affected areas and return them to their original conditions.

3.15 Dewatering: The contractor shall employ all measures necessary for the dewatering of excavation. All excavations are to be kept free of water at all times.

SECTION 01011

SAFETY ENGINEERING AND MAINTENANCE

1.0 GENERAL:

1.1 Purpose: The purpose of this section is to provide the contractor with instructions for the safety engineering tasks.

1.2 Scope: The section identifies the safety requirements, technical constraints, and relationship with other contract tasks. No data will be delivered as a result of this section.

2.0 PRODUCTS: NOT USED

3.0 EXECUTION:

3.1 General Safety:

3.1.1 The contractor shall organize and maintain a safety program. The contractor's management organization shall include administrative, liaison, and technical functions to implement, direct, monitor, control, and allocate resources for these tasks and allied safety efforts within other tasks of the project. As a minimum, the safety tasks herein shall be accomplished by the contractor to assure that the safety requirements are satisfied.

3.1.2 The contractor shall document the approach used to satisfy safety requirements. The contractor's files containing safety and safety related data shall be available for review by the Government as deemed necessary by the Contracting Officer (CO).

3.1.3 The contractor shall be responsible for ensuring subcontractors provide necessary support to satisfy requirements. The contractor shall include a stipulation in all subcontracts to require subcontractors to comply with the safety provision specified herein.

3.1.4 The contractor shall comply with all applicable Air Force, command, and installation/facility mishap prevention requirements while operating through or at such an installation/facility.

3.2 System Safety:

3.2.1 The contractor shall ensure integration of system safety into the overall contractual effort which satisfies the requirements of MIL-STD-882.

3.3 Ground Safety:

3.3.1 Comply with applicable OSHA standards, federal, state and local laws, regulations and requirements regarding worker safety while performing work on the AFRL, Rome Research Site.

Compliance shall include the following:

Comply with all safety and health requirements necessary for the protection of personnel, facilities and equipment including the following Air Force requirements for on-site contractors working side-by-side with government employees:

a. AFI91-202 w/AFMC Sup1- The US Air Force Mishap Prevention Program

b. AFI91-301 w/AFMC Sup 1- Air Force Occupational and Environmental Safety, Fire

Protection and Health (AFOSH) Program

c. AFOSHSTD91-501 w/AFMC Sup1 - Air Force Consolidated Occupational Safety

Standard

d. ADDITIONAL AFI and AFOSHSTD as required.

In the event of a mishap during the performance of this effort on AFRL RRS premise, notify the government in an expeditious manner. Notification shall include the following information:

a. Contract, Contract number, Name and Title of Person(s) Reporting

b. Date, Time and exact location of accident/incident

c. Brief Narrative of accident/incident (events leading to accident/incident)

d. Cause of accident/incident (if known)

e. Estimated cost of accident/incident (material and labor to replace/repair)

f. Nomenclature of equipment and personnel involved in accident/incident

g. Corrective Actions (taken or proposed)

For any information not available at the time of notification, provide follow-up information within twenty (20) calendar days.

3.3.2 The contractor shall develop and be prepared to implement procedures for evacuation and/or protection of people and facilities in the event of severe weather. These procedures will include provisions for securing or repositioning of equipment. The contractor shall notify the POC of any evacuation operations.

3.3.3 The contractor shall comply with OSHA requirements for all confined space entry.

3.4 Radiological Safety:

3.4.1. Nuclear Density Testers: contractor shall obtain written approval from the Contracting Office for all nuclear density testers planned to be used during construction. Contractor shall submit a letter with information requested below no less than 30 days prior to use of the nuclear density testing equipment. The application from the contractor should include, at least, the following:

3.4.1.1 A description of proposed activities on NCR Form 241, Report Proposed Activities in Non-Agreement States, (the 180-day limitation on the form does not apply to organizations, holding an NRC license.) NCR Form 241 is available from AFRL/RIOCC.

3.4.1.2 The procedures established to ensure radiological health and safety of Air Force personnel and the public, the names and qualifications of individuals to conduct the activities and a copy of training certificates.

3.4.1.3 A copy of the applicable NRC or Agreement State license. Expired licenses are unacceptable.

3.4.1.4 The part of the Air Force contract describing work to be done and the inclusive dates of such work.

3.4.1.5 An acknowledgment that the Radiation Protection Officer will be authorized to periodically check the use of the radioactive material to ensure proper radiological health precautions are being followed. Any improper radiological procedures which the RPO discovers will be brought to the contractor's attention through the Contracting Officer's technical representative. Upon being notified of improper radiological procedures, the contractor will take corrective actions immediately to rectify the improper radiological procedures.

3.4.1.6 The contractor shall maintain a log of all nuclear density tester activity.

SECTION 01501

ENVIRONMENTAL PROTECTION

PART I - GENERAL

1.1 SCOPE: The work covered by this section consists of furnishing all labor, materials and equipment and performing all work required for the prevention of environmental pollution during and as the result of construction operations under this contract except for those measures set forth in other Technical Provisions of these specifications. For the purpose of this specification, environmental pollution is defined as the presence of chemical, physical, or biological elements or agents which adversely affect human life; affect other species of importance to man or degrade the ability of the environment for aesthetic and recreational purposes. The control of environmental pollution requires consideration of air, water and land, and involves noise, solid waste-management and management of radiant energy and radioactive materials, as well as other pollutants.

1.2 APPLICABLE REGULATIONS: In order to prevent, and to provide for abatement and control of, any environmental pollution arising from the construction activities of the contractor in the performance of this contract, they shall comply with all applicable Federal, State and local laws, and regulations concerning environmental pollution control and abatement.

1.3 NOTIFICATION: The Contracting Officer will notify the contractor in writing of any noncompliance with the foregoing provisions and the action to be taken. The contractor shall after receipt of such notice, immediately take corrective action. Such notice, when delivered to the contractor, shall be deemed sufficient for the purpose.

1.4 IMPLEMENTATION: Prior to commencement of the work the contractor will meet with representatives of the Contracting Officer to develop mutual understandings relative to compliance with this provision and administration of the environmental pollution control program.

SECTION 02000

TESTING LABORATORY SERVICES

PART 1 - GENERAL

1.0 QUALITY ASSURANCE

A. Laboratory services are solely an assurance that contract provisions are met.

B. Forward copies of test results to the Government within ten days of testing.

PART 2 – NOT USED

PART 3 - EXECUTION

3.0 TESTING LABORATORY SERVICES

A. The contractor shall obtain the testing services of a laboratory that is regularly engaged in the testing of construction materials.

3.1 RESPONSIBILITIES AND DUTIES OF CONTRACTOR

A. To facilitate testing services, the contractor shall:

1. Furnish to the Laboratory such samples of materials as may be necessary for testing purposes.

2. Furnish such casual labor, equipment and facilities as is necessary to obtain and handle samples at the project.

3. Advise the Testing Agency sufficiently in advance of operations to allow for completion of tests and for the assignment of personnel.

4. Provide and maintain, for the sole use of the Testing Agency, adequate facilities for safe storage and proper curing of concrete test cylinders on the project site for the first 24 hours as required by ASTM C31.

5. Maintain records at the project site showing the date and extent of each concrete placement.

6. Provide safe access to items to be tested. This includes sheeting and ladders for deep excavation; scaffolding and ladders for inspection and testing of superstructure items.

B. If any portion of the work shows low test results, evidence of detrimental placing or curing conditions, the contractor may be required to do additional testing, compaction, cored samples or re-welding. In no case shall the inspector prescribe the method of repair of the defect.

3.2 QUALITY CONTROL

A. Testing Agency shall perform the following tests and inspections:

1. Select Fill and Compaction

a. Sieve analysis of proposed embankment, backfill, and sub-base material.

b. Optimum moisture maximum density curve for each soil used in accordance with ASTM D1557, Method A.

c. Tests of actual in-place density for each strata placed in accordance with ASTM D1556, D2167 or D2922.

2. Concrete

a. Tests of proposed aggregates for conformance with ASTM C33.

b. Compressive Strength Tests: ASTM C39. One set of 3 cylinders for each 50 cubic yards, or fraction thereof, placed in one day. One specimen tested at 7 days and 2 specimens tested at 28 days.

c. Slump Tests: ASTM C143-a. One test for each set of compressive strength test specimens.

d. Air Content Tests: ASTM C231-a. One for every other load at point of discharge, or when required by an indication of change.

e. Temperature: Note temperature of each load of concrete at point of discharge. Note air temperatures during placing period.

SECTION 02200

EXCAVATION, EMBANKMENT AND COMPACTION

1.0 RELATED WORK SPECIFIED ELSEWHERE

A. Trenching, Backfilling and Compacting: Section 02250

1.1 PROTECTION

A. The contractor shall use every precaution to prevent injury to the buildings, roads, curbs, walks, pipes, conduits, poles and structures above and below ground that are adjoining or included in the area under contract, and shall repair or replace any material or work damaged or destroyed by his forces or forces of his subcontractors.

B. The contractor shall maintain all bench marks, monuments and survey if reference points. If disturbed or destroyed, replacement shall be to the satisfaction of the

1.2 DEFINITIONS

A. Topsoil shall be considered the surface layer of soil suitable for use in seeding and planting. It shall contain no admixture of refuse or any substance toxic to plant growth and shall be free from subsoil, stumps, brush, roots, stones, clay lumps or similar objects larger than 1/4 inch in greatest dimension. The Contracting Officer shall determine the suitability of material for use as topsoil.

B. Sub-grade surface is defined as the surface of an embankment or excavation upon which sub-base or pavement courses are placed.

C. The sub-grade area is defined as the two (2) foot layer of earth immediately below the sub-grade surface, to a limit of one (1) foot outside the edges of pavement.

1.3 SUBMITTALS

Submit sieve analysis, optimum moisture, maximum density curve, and in-place density test results for fill material.

1.4 DESCRIPTION

The known structures, sewers and drains, manholes, pavements, side, walls, fences, hydrants, poles and similar structures located on, or adjacent to, the proposed work are shown on the drawings. Such information is shown for the convenience of the contractor but is not guaranteed to be complete or without error. The size and location of underground structures and utilities may be inaccurate and other obstructions may be encountered.

PART 2 - PRODUCTS

2.0 MATERIALS

A. Where embankment or fill is required for the construction of roads, parking areas, walks, lawns or appurtenances, material used shall be excavated or borrow material satisfactory to the Contracting Officer. Fill and embankment material shall be soil free from rubbish, deleterious, and unsuitable material of any kind, and of a nature that will compact into a solid and permanent fill.

B. The top size shall be (a) 6 inches or less if placed in a defined sub grade area or (b)

12 inches or less if placed in an embankment. Of the portion passing the four (4) inch sieve, 15 percent by weight or less shall pass the No. 200 sieve.

PART 3 - EXECUTION

3.0 EXCAVATION

A. The contractor shall perform all excavation which is required for the installation of all work under his contract, indicated on the drawings or called for by the specification.

Excavation shall consist of the loosening, removing, loading, transporting, depositing and compacting of all materials (except material provided for under other items) of every name and nature, wet or dry, necessary for the preparation of sub-grades of pavements and walks, to grade the site to the elevations shown on the drawings, to excavate ditches, to construct earth foundations, to make embankments and fills, or for any other purposes necessary to complete the work of this contract. Surplus topsoil, if any, shall be disposed of off base.

B. All topsoil within the areas to be rough graded shall be stripped and stockpiled before the other excavation is commenced. The topsoil shall be stockpiled within the areas designated on the drawings or as directed by the Contracting Officer.

C. The stockpiles of topsoil shall be kept separate from all other classes of excavated and stockpiled material. Stockpiles shall be such size and shape as will keep loss of topsoil by wind and erosion to a minimum and shall be trimmed in a workmanlike manner to fairly uniform surfaces and slopes.

D. Unsuitable material shall be removed to the depth and limits designated by the Contracting Officer and disposed of off the site. The Contracting Officer shall be the sole judge of what constitutes unsuitable material.

E. Where old pavement, building foundations or walls are encountered within two (2) feet of sub-grade surface elevation, they shall be thoroughly broken up into 6 inch pieces and smaller, or else removed.

F. Where called for on the plans, the sub-grade area shall be excavated to remove stone over six (6) inches in diameter. The material may be used if otherwise suitable.

3.1 EMBANKMENTS AND FILLS

A. Fills and embankments shall be compacted to 90 percent Modified Proctor Density except as otherwise specified. Material for fill, unless otherwise specified, shall be as specified in Section 2.1.

1. TESTING Density determinations for soils shall be based on the Modified

Proctor Density Test as determined by the latest revision of ASTM Designation 1557.

B. When embankments are to be constructed over ground that will not adequately support embankment construction equipment, an initial layer of fill may be allowed to form a working platform. The maximum thickness of the initial layer shall not exceed 2 feet.

C. When embankments are to be constructed on hillsides or against existing embankments with slopes steeper than 1 (vertical) on 3 (horizontal), the slopes shall be benched.

D. Topsoil under embankment areas, where finish grade is 6 feet or less above the existing grade, shall be stripped to its full depth.

E. Embankment and fill material shall not be placed on frozen earth, nor shall frozen soils be placed in any embankments.

F. Embankment material shall be placed and spread in lifts of uniform thickness not exceeding eight (8) inches in loose lift-thickness.

G. It shall be the contractor's responsibility to properly place and compact all materials and to correct any deficiencies resulting from insufficient or improper compaction. The contractor shall determine the type, size and weight of compactor best suited to the work;

control the lift thickness; ensure that the applied effort (number of passes and travel speed) is uniformly applied; exert proper control over the moisture content of the material; and ensure other details necessary to obtain satisfactory results.

1. In areas inaccessible to conventional compactors, impact rammers, plate or small drum vibrators or pneumatic button head compaction equipment may be used with lift thickness not exceeding 6 inches. Hand tampers will not be permitted.

2. All fill material shall be at a moisture content for proper compaction of the material using the compactor selected. When water must be added to a material it may be added on the lift or in the excavation or borrow pit. Water added shall be thoroughly incorporated into the soil and manipulation shall be provided whenever necessary to attain uniformity of moisture distribution in the soil.

When the moisture content of a lift about to be compacted exceeds the required amount, compaction shall be deferred until the layer has dried back to the required amount.

H. Damage to any compacted lift at any time during the course of construction, such as rutting under the loads imposed by earthmoving equipment, shall be fully repaired by the contractor prior to placement of any overlying materials.

3.2 ROUGH GRADING

A. The contractor shall perform the rough grading to the lines and grades shown on the plans or as modified by the Contracting Officer. Ridges and depressions shall be eliminated to the satisfaction of the Contracting Officer.

B. Sub-grade material under floor slabs, roads, parking areas and walks shall be compacted to 95 percent Modified Proctor Density Minimum. Other rough grade areas may be compacted to a minimum of 90 percent Modified Proctor Density unless otherwise shown on the drawings or directed by the Contracting Officer.

C. The contractor shall maintain slopes, crowns and ditches on all excavations and embankments to insure satisfactory drainage at all times.

D. The contractor shall exercise care not to over-excavate in the vicinity of structures, pavements and walks.

E. Spoil areas for surplus and waste materials, if required, must be furnished by the contractor unless permission to spoil on the Government's property is granted by the Government. All spoil areas on the Government's property shall be left in a neat and satisfactory condition. They shall be provided with permanent, suitable drainage and seeded, if required by the Government.

3.3 SUB-GRADE AREAS

A. Sub-grade for Pavements and Walks

1. Sub-grade for pavements and walks shall be accurately graded and shaped as shown on the drawings, or as directed by the Contracting Officer.

2. Sub-grade for walks shall be compacted by rolling or otherwise as the

Contracting Officer may approve.

3. In case unsuitable material is encountered in the sub-grade, it shall be removed to the limits designated by the Contracting Officer and replaced with satisfactory materials.

4. All hollows and depressions which develop under rolling shall be filled with acceptable material and shall be rolled again. The process of rolling and filling shall be repeated until no depressions develop.

5. The sub-grade shall neither be muddy nor otherwise unsatisfactory when the sub-base or pavement material is placed upon it. If the sub-grade becomes rutted or displaced due-to any cause whatsoever, the contractor shall re-grade and compact same as specified without additional payment.

3.4 PREPARATION FOR TOPSOIL

A. After the surface has been rough graded, the contractor shall prepare the surface for placing topsoil within the limits called for in the contract as specified, or indicated on the drawings. The surfaces shall be graded to the specified or indicated depth below finished grade and in conformity with the drawings and these specifications. The areas shall be free from stone, roots, quack grass or other deleterious materials.

3.5 BORROW

A. The management of a borrow source and the acceptability of all borrow material shall be subject to the approval of the Contracting Officer at all times. The contractor shall provide certification that the material obtained for borrow meets the requirements of this section.

B. Testing

1. Field density tests may be ordered by the Contracting Officer at an average interval of one test for each 100 cy of in-place material and as directed by the

2. The contractor shall furnish all necessary samples for laboratory tests and shall provide assistance and cooperation during field tests. The contractor shall plan his operations to allow adequate time for laboratory tests and to permit taking of field density tests during compaction. Any costs of retesting required as a result of failure to meet compaction requirements shall be borne by the contractor.

SECTION 02250

TRENCHING, BACKFILLING AND COMPACTING

1.0 DESCRIPTION

This section covers trenching, backfilling and compacting of excavations used for the installation of sub-drainage systems and drainage pipe, and for structures associated with these utilities.

1.1 CLASSIFICATION

Excavation - Shall comprise and include the satisfactory removal and disposition of all materials which are encountered within the required widths and depths of the excavations. Excavation shall be classified as follows:

A. Trench Excavation - shall include all earth, unsuitable material, loose rock and all concrete, masonry, pavement, piping, debris and all other materials.

B. Unstable Material Excavation - shall consist of the removal of all material meeting the definition of unstable material.

1.2 SUBMITTALS

Submit sieve analysis, optimum moisture, maximum density curve, and in-place density test results for select fill.

PART 2 - MATERIALS

2.0 DEFINITIONS

A. Earth: Clay, loam, sand, gravel, topsoil and other materials not classified as "solid rock" or "loose rock."

B. Select Earth: Previously excavated material free from clay, loam, organic material, debris, frozen material and containing only small amounts of stones, pebbles or lumps over 1 inch in greatest dimension, but none over 2 inches in greatest dimension.

C. Common Earth: Previously excavated material, consisting of clay, loam, sand, gravel, topsoil and similar material, free from debris and frozen materials, may contain some stones, pebbles, lumps and rock fragments up to 6 inches in largest dimension.

D. Unstable Material: Debris and material of any nature and all wet, soft or loose earth located below the bottom limits of excavation which does not provide sufficient bearing capacity to satisfactorily support pipes or other work placed thereon.

E. Select Fill: Well graded granular material or bank run gravel, free from silt, clay, and organic matter meeting the following gradation requirements:

Amounts Finer than Size of Sieve Nominal Sieve Size (Percent by Weight)

4" 100 #40 0-70 #200 0-10

F. Pipe Bedding Material: As specified in specification for utility, or as shown on the drawings.

G. Sand shall conform to the general requirements for soil materials above and shall be clean, coarse grained material as classified by ASTM D 2487, of which no more than 10 percent by weight shall be finer than the No. 200 sieve.

H. Impervious Soil: Clay, loam, silt or other similar material, as approved by the Contracting Officer, having a permeability lower than the adjacent soil in trench excavation.

I. Unsuitable Material: Excavated material which does not meet specification requirements for backfill purposes and includes "unstable material."

J. Run of Bank Gravel: Clean, well graded granular material with all material passing a

2” Sieve Size.

K. Borrow Material: Borrow material shall be material which is approved by the Contracting Officer for backfill. The material may be previously excavated excess material which would normally be wasted or may be borrow material provided by the contractor. The contractor will not be required to provide gravel from borrow pits under this item.

3.0 EXCAVATION – GENERAL

A. Non-Paved Areas: No trees or plantings shall be removed or trimmed without prior permission of the Contracting Officer. Small trees, plantings, etc., shall be carefully taken up and preserved for reuse by an approved landscape subcontractor. Topsoil shall be removed for its full depth and shall be stockpiled separately from other excavated materials and preserved for reuse.

B. Paved Areas, Walks and Curbs: All paved areas, walks and curbs are to be restored.

The existing pavements shall be cut to the limits indicated or, if not indicated, to the minimum extent required for proper installation of the pipe lines and appurtenances. An approved type cutting tool which will cut a neat, straight joint line shall be used to cut pavement surface along the limits of removal. The contractor shall replace the disturbed pavements with new pavement equivalent or superior to the existing in quality, thickness and surface finish, and in accordance with the requirements.

C. Drainage and Dewatering of Excavations

1. The contractor shall, during construction, conduct his operations so as to prevent at all times the accumulation of water, ice and snow in excavations or in the vicinity of excavated areas so as to prevent water from interfering with the progress or quality of the work. Under no conditions shall water be allowed to rise in un-backfilled trenches after pipe has been placed.

2. Accumulated water, ice and snow shall be promptly removed and disposed of by dewatering. Disposal shall be carried out in a manner which will not create a hazard to public health, nor cause injury to: Public or private property, work completed or in progress, public streets, nor cause any interference in the use of streets and roads by the public. Pipes under construction shall not be used for drainage of excavations unless approved by the Contracting Officer.

3. During construction, when an unstable condition in the pipe sub-grade has been created due to the contractor's excavation, the sub-grade shall be stabilized by dewatering or other means approved by the Contracting Officer.

D. Sheeting and Bracing

1. Sheeting and bracing for all excavation work shall be provided and maintained as required for safety and in accordance with local, State and Federal laws. All material used for sheeting and bracing shall be sound and free from defects which might impair its strength and effectiveness. The requirements of the Industrial code shall be considered as part of these specifications.

2. The Contracting Officer may order sheeting and bracing to be left in place and cut off where directed. Where, in the opinion of the contractor, damage may result from withdrawing sheeting, he shall immediately notify the Contracting Officer and verify same in writing as soon as practicable.

3. The contractor shall be responsible for the adequacy of all sheeting and bracing used and for all damage to persons or property resulting from improper quality, strength, placing, maintenance and removal.

4. All excavations near existing utility lines shall be braced or sheeted as required in order to protect the existing utility. It shall be the responsibility of the contractor to prevent damage to or displacement of utilities, and to work with and request the concurrence of the utility company's representative in this matter.

E. Disposal of Excavated Materials

1. Excavated materials meeting specification requirements may be used as backfill for trenches and other excavations, and shall be stored in an orderly manner at a sufficient distance from the banks of excavations to avoid overloading and to prevent slides or cave-ins. Excess excavated material shall be promptly disposed off the site by the contractor.

2. "Unsuitable material" shall be loaded directly from the excavation and removed from the backfilling area. The contractor shall remove and dispose of all "unsuitable material" from the construction site within 48 hours after excavation, unless otherwise directed by the Contracting Officer.

3. Stored or piled materials shall not obstruct roads, driveways, sidewalks, or interfere with drainage along gutters, ditches or drainage channels. If any excavated material cannot be stored at the site in a manner to avoid such obstructions or interferences, it shall be stored away from the site at a location approved by the Contracting Officer.