Attachment_A_Statement_of_Work_and_Specifications.pdf

Rubber Mats at Building 615

INDEX

SECTION NO. DESCRIPTION

DIVISION 1 - GENERAL REQUIREMENTS

01010 Summary of Work

01300 Submittals

DIVISION 2 – SITEWORK

02315 Excavation and Fill

02722 Crushed Aggregate Base

02790 Athletic and Recreational Surfaces

02935 Turf

02940 Sodding

DIVISION 3

03100 Structural Concrete Formwork

03200 Concrete Reinforcement

03300 Cast in Place Concrete

DIVISION 4-16 – NOT USE

01010 - 1

Rubber Mats at Bldg

SECTION 01010

SUMMARY OF WORK

1 DESCRIPTION OF WORK:

1.1 Work to be Done: The work consists of furnishing all plant, labor, equipment, supplies, and materials, and performing all work in accordance with these specifications and drawings as indicated at Fort Leonard Wood, Missouri.

1.2 Location: The site of the proposed work is in the Cantonment Area Bldg. 615 of the Fort Leonard Wood

Military Reservation, Fort Leonard Wood, Missouri.

2 PRINCIPAL FEATURES: The work to be performed will include, but not be limited to, the following principal features:

2.1 The contractor shall remove all existing rubberized mats and sand as indicated on drawings at the playgrounds behind bldg. 615. All areas have between 24 to 36 inches of sand. Removed materials shall be disposed outside of Fort Leonard

Wood.

2.2 The contractor shall provide mat thickness as specified in section 02790. The mat shall be contiguous.

2.5 The mat used shall have a minimum of 5 years warranty against shrinkage, deterioration, damage from UV light.

2.6. Contractor upon completion of work provide certification to the Government verifying thickness of the mat around playground equipment.

3 SEQUENCE OF WORK: The area concerned in this project is Government owned and will not be in use during the course of this project.

4 SCHEDULING:

4.1 The Contractor shall schedule all activity at the job site through the DPW Contract Inspection Branch a minimum of 24 hours in advance of work.

4.2 Contractor shall schedule his working hours to coincide with the working hours of the military reservation.

Normal working hours of the reservation are 7:30 a.m. to 4:00 p.m., Monday thru Friday, legal public holidays excepted.

The Contractor shall not perform work on the reservations beyond the aforementioned working hours without the written approval of the Contracting Officer.

4.3 If the Contractor, for his convenience, desires to perform work during other than normal working hours or on other than normal workdays, he shall notify by telephone the Contracting Officer and the Directorate of Public Works

Inspection Branch at least 72 hours in advance. The Contractor shall not perform work beyond the normal working hours or normal workdays without written approval of the Contracting Officer and the DPW Inspection Branch approval. The

Contractor shall reimburse the Government for any additional expense occasioned the Government thereby, such as, but not limited to, overtime pay for Government inspectors, utilities service, etc.

4.4 Time extensions due to adverse weather or material lead time, must be received in writing prior to scheduled completion date.

5 UTILITY INTERRUPTIONS: Coordinate with the Contracting Officer, DPW Contract Inspection Branch, and the user for any utility work that interrupts service to the facility, any area outside the facility, or any real property facility.

Establish a schedule of interruptions listing starting and ending times of disconnection 48 hours prior to interruption.

6 FIELD MEASUREMENTS: The Contractor shall verify all measurements at the project site and shall be responsible for all dimensions, fittings, and the proper installation of all materials and equipment specified.

7 PERMITS: The Contractor shall be responsible for obtaining permits for each worksite.

7.1 Digging: A digging permit is required prior to ANY earthwork operations. The DPW Contract Inspection

Branch will assist the Contractor in obtaining this free permit.

7. 2 Land Disturbance: A land disturbance permit is required for any projects that disturb one (1) acre or more.

Land disturbance is defined as any activity that disturbs the roots of vegetation such as clearing, grubbing and grading.

The Contractor shall apply for the permit from the Missouri Department of Natural Resources (MODNR), after the

FLW Environmental Office has approved the permit application. MODNR by law may take up to 180 days to review and issue a permit. Copy of the permit shall be forwarded to the DPW Environmental Office. The Contractor shall not begin land disturbance operations until they have received and complied with the MODNR permit. MODNR charges a fee for the permits.

7.3 Hot Work Permit: The Contractor shall obtain a written “Hot Work Permit” (DA Form 5383-R) prior to commencing all hot work outside an approved shop area. Permits will be issued by the FLW Fire & Emergency

Services at Fire Station #1, Bldg. 580, Phone: (573) 596-0883. The Contractor shall be liable for any fire loss to

Government property attributable to negligence on the part of the Contractor, including failure to comply with fire prevention measures prescribed by terms of this contract. The Inspection Branch will assist the Contractor in obtaining this free permit

7.4 Confined Space Permit: The Contractor shall obtain a written “Confined Space Permit” prior to commencing all confined space activity above and/or below ground. Title 29 CFR 1910.146 OSHA (Confined Space

Entry) and FLW Regulation 385-7 sets forth the definition of confined spaces and establishes responsibility and procedures for protection of personnel that shall be entering, work in, and existing confines space. If a permit is required the Contractor shall contact the FLW Fire Department, Fire Station #1, Assistant Chief of Operations, Bldg 580, Phone: (573) 596-0883 prior to, and after the permit required entry is conducted. The Contractor shall keep the permit copy within the work area until all workers have been accounted for after completion of the workday. The Inspection Branch will assist the Contractor in obtaining this free permit.

8 SAFETY REQUIRMENTS:

8.1 General Safety: During progress of work, the Contractor shall protect all personnel, whether Government or civilian, from any and all safety hazards caused by the construction operations. The contractor shall follow all Federal, State and local laws in accordance with 29 CFR 1910 (General Industries Standards), and 29 CFR 1926 (Construction

Standards).

8.2 Fire Prevention: The current version of FLW Regulation 420-2 “Post Fire Regulations” is by this reference made a part of this solicitation and resultant contract. The Contractor’s operation shall conform to all applicable portions of this document. All personnel entering on duty as Contractor’s employees shall be instructed in the fire prevention program of the Post and shall be advised of the requirement of the Post Fire Regulations as they pertain to this particular contract.

8.3 Traffic Control: Contractor shall provide all temporary signs and markers as necessary to maintain safety in the worksite. All signs shall conform to the latest edition of the Manual of Uniform Control Devices

(MUTCD) and shall be coordinated with, and approved by, DPW Inspection Branch. Contractor shall ensure road user movement is inhibited as little as practical.

9. SPECIAL REQUIREMENTS:

9.1 Use of Fire Hydrants – The temporary use of fire hydrants as sources of water is not authorized without prior approval by the Fire Department, 596-0886. Fire hydrant connections shall include an approved backflow preventer. Use of backflow preventers must comply with Missouri Department of Natural Resources, Division 60, Public Drinking Water Program, Chapter 11 – Backflow Prevention, Title 10CSR60-11. Government furnished backflow preventers shall be utilized and are available at Bldg. 1601, Water Treatment Plant on a first come basis.

The Contractor shall be required to sign a hand receipt prior to obtaining a backflow preventer. The Contractor shall be accountable to return the checked out backflow preventer equipment undamaged and as soon as possible. The contractor shall furnish and use an approved fire plug wrench to open and close the hydrant. Pipe wrenches shall not be used. When the hydrant is not being used it shall be shut off. When the need for the hydrant is finished, the hydrant shall be shut off , the temporary connection and backflow preventer shall be removed, the fire hydrant caps shall be replaced and the Fire Department shall be notified that the hydrant will no longer be used.

9.2 Dust Walls - Provide tightly sealed dust curtains to prevent dust from either demolition or construction work from spreading to other parts of the facility.

9.3 Building Number – Contractor shall provide a facility number sign with the street address included.

Display in a prominent location near the entrance of the job site. Sign numbers shall be white, minimum of 4” tall on brown background, Bold Helvetica style. Sign shall be mounted 7' from ground to bottom of sign and shall be maintained in a legible condition from start of actual work on site to final acceptance.

10. SECURITY:

10.1 In unoccupied facilities, the Contractor shall be responsible for the security of the facility; i.e., all exterior doors shall be locked, windows closed and locked, etc.

10.2 The Contractor shall not be on site without prior notification to the DPW Contract Inspection Branch.

10.3 Contractor personnel shall have valid civilian ID’s.

11 APPLICABLE PUBLICATIONS/REFERENCES: The publications referenced herein after shall be the most recent at the time of solicitation, unless otherwise specified at the beginning of each Specification Section under paragraph 1.

APPLICABLE PUBLICATIONS and or REFERENCES.

12 WORKSITE HOUSEKEEPING:

12.1 The Contractor shall remove all trash and disposal material from the worksite before the end of each day, to the extent it is consistent with standard construction practices on Government work sites. The Contractor shall take all possible precautions to maintain the work site, at all times, in a condition that will prevent damage or injury to person or property, Government or otherwise. The above precautions shall include protection from weather conditions. The

Contractor shall be responsible for all damages caused by the negligent acts or omissions of his employees, sub-contractors, or agents during Contract performance.

12.2 Materials to be used within 1 week of delivery and scrap material to be used as work progresses shall not be required to be in screened area. However, all such items shall be placed in an orderly manner (i.e. dirt, rock, etc., in piles and stackable items such as pipe, brick, lumber, etc., stacked off the ground on pallets in an orderly manner).

12.3 Grass and weeds at work/storage site shall be kept at a height of 4”or less. Work site/storage site shall be policed for trash and disposal material a minimum of once per day.

12.4 All trailer and material storage sites shall have an identification board/sign, with company and job name on it, i.e. ABC Construction – ABC building complex. Signs shall meet the following criteria: min 3’ X 3’ max of 4’ X 8’ in size, 3” high legible print, and be approved by DPW Inspection Branch.

13 RESPONSIBLITY FOR DAMAGE

13.1 Damage to Personal Property: The Contractor shall be solely responsible for all damage to Government and occupant personal property caused by the Contractors’ personnel, subcontractors, his agents, or by the performance of his work.

13.2 Damage by Negligence: Damage resulting in gas leaks, electrical outages, loss of heat during cold weather, water leaks, unsecured facilities, weather damage, or oil/hazardous waste spills shall be responded to by the Contractor within 2 hours and repaired within one workday. If the Contractor fails to comply with these requirements, the Government reserves the right to repair the damage and charge the cost to the Contractor. Contractor shall protect all areas through which he will be transporting demolition debris or construction materials. Any damaged turf, sidewalks, roads, vegetation, site amenities, etc, shall be replaced or repaired by the Contractor prior to final Contract closeout.

14 DISPOSAL OF MATERIALS: All materials removed and not reused or designated as salvage material in this project shall become the property of the Contractor, unless otherwise specified, and shall be the Contractor's responsibility for lawful disposal.

14.1 The Contractor may use the Fort Leonard Wood Compost area for the disposal of wood chips, leaves, and grass clippings generated by this project.

14.2 All other wastes generated during Contractor operations shall be disposed of off post by the Contractor at his/her expense.

14.2.1 The disposal of demolition waste is regulated by the Missouri Department of Natural Resources under Chapter 260, Revised Statutes of Missouri and 10 Code of State Regulations Chapter 80-4. Such waste, in types and quantities established by the Department, shall be taken to a demolition landfill or a sanitary landfill off of the Installation for disposal. The Contractor shall provide any information requested by the landfill operator to complete forms required by the Missouri Department of Natural Resources or other Government-required landfill records.

14.2.2 Wastes classified as hazardous wastes under the Resource Conservation and Recovery Act shall be disposed of off the installation, unless otherwise specified in this contract. No hazardous waste shall be disposed of without prior review of the disposal documents, and the approval of the Contracting Officer and the

Directorate of Public Works Environmental Coordinator, or his designated representative. The Contractor shall provide an original copy of the disposal document from the approved EPA or State permitted disposal facility for each shipment of hazardous waste generated in this project to the Contracting Officers Representative.

15 ACCESS AND GENERAL PROTECTION/SECURITY POLICY AND PROCEDURES:

15.1 All Contractor and sub-contractor personnel performing tasks on this SOW shall comply with all applicable installation, facility and area commander installation/facility access and local security policies and procedures which will be provided to the Contractor by a Government representative upon written request to the

Contracting Officer. Contractor shall provide all information required for background checks to meet installation access requirements as performed by the installation Provost Marshal Office, Director of Emergency Services or

Security Office. Requesting Contractor shall submit request for installation pass to the KO at https://vcc1.icmvcc.com/im3500/. There is no charge to the Contractor for this pass. Contractor personnel shall comply with all personal identity verification requirements as directed by DoD, HQDA and/or local policy. In addition to the changes otherwise authorized by the changes clause of the base contract to this task order, should the

Force Protection Condition (FPCON) at any facility or installation change, the Government may require changes in

Contractor security matters or processes.

15.1.1 In the event that the automated system at https://jkodirect.jten.mil is not available (e.g., server problems), Level I AT Awareness Training can be provided by a qualified instructor. However, if the training is not completed online, the Level I AT Awareness Instructor qualification must be coordinated with the Installation

Antiterrorism Officer (or Installation Security equivalent) and the resultant name(s) of approved instructors shall be provided to the KO.

15.2 Antiterrorism (AT) Level I Training: All contractor and sub-contractor employees requiring access to

Army installations, facilities and controlled access areas shall complete AT Level I awareness training available at https://jkodirect.jten.mil.Users need to enroll in "Course #JS-US007-14" to receive credit for the training within 10 calendar days of contract award; or for new employees within 10 working days of beginning performance on this contract. Contractor shall submit certificates of completion for all personnel to the KO within five calendar days of completion of the training. There is no charge to the Contractor for this training. The burden to complete this training is approximately 1-hour per employee.

15.3 iWatch Training: Within 10 calendar days of contract award and within 10 calendar days of new

Contractor employees commencing work on this contract, all Contractor and sub-contractor employees shall review the FLW Directorate of Emergency Services (DES) web link for iWatch training located at http://www.wood.army.mil/LEC/iWatch/iWatch.htm. This locally developed training will inform employees of the types of behavior to watch for and how to report suspicious activity. Suspicious activity shall be reported to the KO.

There is no charge to the Contractor for this review. The burden to complete this training is approximately 20-minutes per employee.

15.4 OPSEC Standard Operating Procedure/Plan (SOP): The KO will ensure the contractor (after selected) is aware of the MSCoE OPSEC Plan and is in compliance with the MSCoE OPSEC Plan during contract performance.

15.5 OPSEC Training: New contractor employees must complete Level I OPSEC training within 30 calendar days of their reporting for duty in accordance with AR 530-1. All contractors shall complete annual

OPSEC Awareness training if the contract duration is longer than 30-days. MSCoE OPSEC Officer will provide training. Coordination of training shall be through the DPW Inspection Branch. Proof of training, including a detailed listing of attendees, shall be provided to the KO. A nominal fee shall be charged to the Contractor for this training equal to 1-hour of Government time. The burden to complete this training is approximately 1-hour per training evolution. There are no restrictions to number of attendees in a given training evolution.

15.5.1 All costs associated with employee training and review must be included in the CLIN prices bid/offered for the underlying requirement. No other payments are authorized.

15.5.2 Contractor shall reimburse the Government for classroom OPSEC training. The established fee is $30 per face-to-face training session conducted. Contractor personnel may all attend the same training session; however, in the event of new hires, additional session(s) shall be required. Contractor shall submit payment to the US Treasury, Attention: Budget Officer, MSCoE G-8, 14000 MSCoE Loop, Ste 335, Fort Leonard

Wood, MO 65473.

https://jkodirect.jten.mil/ https://jkodirect.jten.mil/ http://www.wood.army.mil/LEC/iWatch/iWatch.htm http://www.wood.army.mil/LEC/iWatch/iWatch.htm

SECTION 01300

SUBMITTALS

1 GENERAL: All items of equipment and/or materials that are defined or described in the contract require submission in accordance with this section. Brochures, samples, certificates of compliance, test reports, as applicable, shall be submitted by the Contractor to the Contracting Officer, and approval given by the Contracting Officer before any equipment or material is installed under this contract.

1.1 All of the data required shall be submitted at one time. Approval of materials and equipment will be withheld until all of the required information has been submitted and is in the hands of the

Contracting Officer. All submissions must be in sufficient detail to adequately determine that the item will meet the requirements of this Specification.

1.2 Scheduling: A minimum of 14 calendar days will be scheduled for review and approval of material submittals and possible resubmittal of any items subject to approval. For shop drawings submittals, a minimum of 7 calendar days will be allowed for review and approval and possible resubmittal. If submittals are disapproved due to Contractor negligence, the performance period will be reduced by the number of additional days (after receipt of rejection notice) required for approval. The scheduling shall be coordinated with the approved progress schedule.

2 MATERIAL APPROVAL SUBMITTALS:

2.1 At the minimum the following list of materials will require approval. The Contracting

Officer may require submission of additional materials as deemed necessary. The Contractor shall not proceed with any work using materials, which are subject to approval, until materials are approved.

2.1.1 Material Requiring Approval:

02940 Sod Information

02790 Rubberized mat

02790 Binder

02790 Warranty

03300 Concrete information

02722 Aggregate base gradation

NOTE: For specific quantities of materials to be submitted see the individual

SECTIONS.

SECTION 02315

EXCAVATION AND FILL

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 in the text by the basic designation only.

AMERICAN WATER WORKS ASSOCIATION (AWWA)

AWWA C600 (2010) Installation of Ductile-Iron Water Mains and Their

Appurtenances

ASTM INTERNATIONAL (ASTM)

ASTM C136 (2006) Standard Test Method for Sieve Analysis of Fine and

Coarse Aggregates

ASTM C33/C33M (2011a) Standard Specification for Concrete Aggregates

ASTM D1140 (2000; R 2006) Amount of Material in Soils Finer than the No.

200 (75-micrometer) Sieve

ASTM D1556 (2007) Density and Unit Weight of Soil in Place by the Sand-

Cone Method

ASTM D1557 (2012) Standard Test Methods for Laboratory Compaction

Characteristics of Soil Using Modified Effort (56,000 ft-lbf/ft3)

(2700 kN-m/m3)

ASTM D2321 (2011) Standard Practice for Underground Installation of Thermoplastic Pipe for Sewers and Other Gravity-Flow Applications

ASTM D2487 (2011) Soils for Engineering Purposes (Unified Soil

Classification System)

ASTM D4318 (2010) Liquid Limit, Plastic Limit, and Plasticity Index of Soils

ASTM D6938 (2010) Standard Test Method for In-Place Density and Water

Content of Soil and Soil-Aggregate by Nuclear Methods

(Shallow Depth)

ASTM D698 (2012) Laboratory Compaction Characteristics of Soil Using

Standard

Effort (12,400 ft-lbf/cu. ft. (600 kN-m/cu. m.))

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 (2008; Errata 1-2010; Changes 1-3 2010; Changes 4-6 2011) Safety and Health Requirements Manual

U.S. ENVIRONMENTAL PROTECTION AGENCY (EPA)

EPA 530/F-93/004 (1993; Rev O; Updates I, II, IIA, IIB, and III) Test Methods for Evaluating Solid Waste (Vol IA, IB, IC, and II) (SW-846)

EPA 600/4-79/020 (1983) Methods for Chemical Analysis of Water and Wastes

1.2 DEFINITIONS

1.2.1 Capillary Water Barrier

A layer of clean, poorly graded crushed rock, stone, or natural sand or gravel having a high porosity which is placed beneath a building slab with or without a vapor barrier to cut off the capillary flow of pore water to the area immediately below a slab.

1.2.2 Degree of Compaction

Degree of compaction is expressed as a percentage of the maximum density obtained by the test procedure presented in ASTM D1557, for general soil types, abbreviated as percent laboratory maximum density.

1.2.3 Hard Materials

Weathered rock, dense consolidated deposits, or conglomerate materials which are not included in the definition of "rock" but which usually require the use of heavy excavation equipment, ripper teeth, or jack hammers for removal.

1.2.4 Rock

Solid homogeneous interlocking crystalline material with firmly cemented, laminated, or foliated masses or conglomerate deposits, neither of which can be removed without systematic drilling, drilling and the use of expansion jacks or feather wedges, or the use of backhoe-mounted pneumatic hole punchers or rock breakers;

also large boulders, buried masonry, or concrete other than sidewalks or pavement exceeding 1 cubic yard in volume. Removal of hard material will not be considered rock excavation because of intermittent drilling that is performed merely to increase production. Hard and compact materials such as cemented gravel, glacial till, and relatively soft or disintegrated rock that can be removed without continuous and systematic drilling will not be considered as rock. Rock excavation shall be considered a change site condition and require a modification to the contract. Excavation of the material claimed as rock shall not be performed until a unit price has been established and the material has been cross-sectioned by the Contractor and approved by the Contracting Officer. Common excavation shall consist of all excavation not classified as rock excavation. All common excavation shall be performed at no additional cost to the Government. Excavation shall be by open cut.

1.3 SUBMITTALS

Government approval is required for submittals. The following shall be submitted in accordance with Section

01300 SUBMITTALS

Submit 15 days prior to starting work.

Test Reports

Borrow Site Testing

Sieve analysis of baserock material from samples of material delivered to site

Sieve analysis of 3-inch clean rock

Fill and backfill test

Select material test

Porous fill test for capillary water barrier

Density tests

Moisture Content Tests

Granular Material and Capillary Water Barrier: Certified copies of aggregate type and gradation showing compliance to appropriate specification.

Copies of all laboratory and field test reports within 24 hours of the completion of the test.

1.4 DELIVERY, STORAGE, AND HANDLING

Perform in a manner to prevent contamination or segregation of materials.

1.5 QUALITY ASSURANCE

1.5.1 Utilities

Movement of construction machinery and equipment over pipes and utilities during construction shall be at the Contractor's risk. Perform work adjacent to non-Government utilities as indicated in accordance with procedures outlined by utility company. Excavation made with power-driven equipment is not permitted within two feet of known Government-owned utility or subsurface construction. For work immediately adjacent to or for excavations exposing a utility or other buried obstruction, excavate by hand. Start hand excavation on each side of the indicated obstruction and continue until the obstruction is uncovered or until clearance for the new grade is assured. Support uncovered lines or other existing work affected by the contract excavation until approval for backfill is granted by the Contracting Officer. Report damage to utility lines or subsurface construction immediately to the Contracting Officer.

PART 2 PRODUCTS

2.1 SOIL MATERIALS

2.1.1 Satisfactory Materials

Any materials classified by ASTM D2487 as GW, GP, GM, GP-GM, GW-GM, GC, GP-GC, GM-GC, SW, SP, free of debris, roots, wood, scrap material, vegetation, refuse, soft unsound particles, and frozen, deleterious, or objectionable materials. Unless specified otherwise, the maximum particle diameter shall be one-half the lift thickness at the intended location.

2.1.2 Unsatisfactory Materials

Materials which do not comply with the requirements for satisfactory materials. Unsatisfactory materials also include man-made fills, trash, refuse, or backfills from previous construction. Unsatisfactory material also includes material classified as satisfactory which contains root and other organic matter, frozen material, and stones larger than three inches or other materials that are determined by the Contracting Officer as too wet or otherwise unsuitable for providing a stable subgrade or stable foundation for structures. The Contracting Officer shall be notified of any contaminated materials.

2.1.3 Cohesionless and Cohesive Materials

Cohesionless materials include materials classified in ASTM D2487 as GW, GP, SW, and SP. Cohesive materials include materials classified as GC, SC, ML, CL, MH, and CH. Materials classified as GM, GP-GM, GW-GM, SW-SM, SP-SM, and SM shall be identified as cohesionless only when the fines are nonplastic

(plasticity index equals zero). Materials classified as GM and SM will be identified as cohesive only when the fines have a plasticity index greater than zero.

2.1.4 Common Fill

Approved, unclassified soil material with the characteristics required to compact to the soil density specified for the intended location.

2.1.5 Backfill and Fill Material

ASTM D2487, classification GW, GP, GM, SW, SP, SM, with a maximum ASTM D4318 liquid limit of 35, maximum ASTM D4318 plasticity index of 12, and a maximum of 25 percent by weight passing ASTM D1140, No. 200 sieve.

2.1.6 Select Material

Provide materials classified as GW, GP, SW, or SP by ASTM D2487 where indicated. The liquid limit of such material shall not exceed 35 percent when tested in accordance with ASTM D4318. The plasticity index shall not be greater than 12 percent when tested in accordance with ASTM D4318, and not more than 35 percent by weight shall be finer than No. 200 sieve when tested in accordance with ASTM D1140.

2.1.7 Topsoil

Provide as specified in Section 02935 Turf.

2.2 ROCK MATERIALS

2.2.1 2-inch minus base rock: Crushed limestone or dolomite conforming to the following gradation requirements:

Percent

Passing 2-inch sieve

Passing 1-1/2-inch sieve ........ 95-98

Passing 1-inch sieve .............. 85-90

Passing 3/4-inch sieve ........... 80-85

Passing 1/2-inch sieve ........... 65-70

Passing No. 4 sieve ............... 35-60

Passing No. 30 sieve .............. 10-35

Passing No. 200 sieve ............ 5-10

2.2.2 3-inch clean rock: Limestone or dolomite having at least 10 percent retained on the 3-inch sieve and having less than five percent passing the 3/4-inch sieve.

2.2.3 2-inch clean rock: Limestone or dolomite having at least 10 percent retained on the 2-inch sieve and having less than five percent passing the 3/4-inch sieve.

2.3 POROUS FILL FOR CAPILLARY WATER BARRIER

ASTM C33/C33M fine aggregate grading with a maximum of 3 percent by weight passing ASTM D1140, Formatted: Indent: Left: 0"

No. 200 sieve, or 1-1/2 inches and no more than 2 percent by weight passing the No. 4 size sieve and conforming to the general soil material requirements specified in paragraph entitled "Satisfactory Materials."

2.4 UTILITY BEDDING MATERIAL

Except as specified otherwise in the individual piping section, provide bedding for buried piping in accordance with AWWA C600, Type 4, except as specified herein. Backfill to top of pipe shall be compacted to 95 percent of ASTM D698 maximum density. Plastic piping shall have bedding to spring line of pipe. Provide ASTM D2321 materials as follows:

a. Class I: Angular, 0.25 to 1.5 inches, graded stone, including a number of fill materials that have regional significance such as coral, slag, cinders, crushed stone, and crushed shells.

b. Class II: Coarse sands and gravels with maximum particle size of 1.5 inches, including various graded sands and gravels containing small percentages of fines, generally granular and noncohesive, either wet or dry. Soil Types GW, GP, SW, and SP are included in this class as specified in ASTM D2487.

2.5 BORROW

Obtain borrow materials required in excess of those furnished from excavations from sources outside of Government property.

2.6 BURIED WARNING AND IDENTIFICATION TAPE

Metallic core or metallic-faced, acid- and alkali-resistant, polyethylene plastic warning tape manufactured specifically for warning and identification of buried utility lines. Provide tape on rolls, 3 inch minimum width, color coded as specified below for the intended utility with warning and identification imprinted in bold black letters continuously over the entire tape length. Warning and identification to read, "CAUTION, BURIED (intended service) LINE BELOW" or similar wording. Color and printing shall be permanent, unaffected by moisture or soil.

Warning Tape Color Codes

Red: Electric

Yellow: Gas, Oil; Dangerous Materials

Orange: Telephone and Other Communications

Blue: Water Systems

Green: Sewer Systems

White: Steam Systems

Gray: Compressed Air

2.6.1 Detectable Warning Tape for Non-Metallic Piping

Polyethylene plastic tape conforming to the width, color, and printing requirements specified above. Minimum thickness of the tape shall be 0.004 inch. Tape shall have a minimum strength of 1500 psi lengthwise and 1250 psi crosswise. Tape shall be manufactured with integral wires, foil backing, or other means of enabling detection by a metal detector when tape is buried up to 3 feet deep. Encase metallic element of the tape in a protective jacket or provide with other means of corrosion protection.

2.7 DETECTION WIRE FOR NON-METALLIC PIPING

Detection wire shall be insulated single strand, solid copper with a minimum of 12 AWG.

PART 3 EXECUTION

3.1 PROTECTION

3.1.1 Shoring and Sheeting

Provide shoring, bracing, trench boxes and sheeting installed as necessary to protect workmen, banks, adjacent paving, structures, and utilities. In addition to Section 25 A and B of EM 385-1-1, include provisions in the shoring and sheeting plan that will accomplish the following:

a. Prevent undermining of pavements, foundations and slabs.

b. Prevent slippage or movement in banks or slopes adjacent to the excavation.

c. Shoring, bracing, and sheeting shall be removed as excavations are backfilled, in a manner to prevent caving.

3.1.2 Drainage and Dewatering

Provide for the collection and disposal of surface and subsurface water encountered during construction.

3.1.2.1 Drainage

So that construction operations progress successfully, completely drain construction site during periods of construction to keep soil materials sufficiently dry. The Contractor shall establish/construct storm drainage features (ponds/basins) at the earliest stages of site development, and throughout construction grade the construction area to provide positive surface water runoff away from the construction activity and/or provide temporary ditches, swales, and other drainage features and equipment as required to maintain dry soils, prevent erosion and undermining of foundations. When unsuitable working platforms for equipment operation and unsuitable soil support for subsequent construction features develop, remove unsuitable material and provide new soil material as specified herein. It is the responsibility of the Contractor to assess the soil and ground water conditions presented by the plans and specifications and to employ necessary measures to permit construction to proceed. Excavated slopes and backfill surfaces shall be protected to prevent erosion and sloughing. Excavation shall be performed so that the site, the area immediately surrounding the site, and the area affecting operations at the site shall be continually and effectively drained.

3.1.2.2 Dewatering

Groundwater flowing toward or into excavations shall be controlled to prevent sloughing of excavation slopes and walls, boils, uplift and heave in the excavation and to eliminate interference with orderly progress of construction. French drains, sumps, ditches or trenches will not be permitted within 3 feet of the foundation of any structure, except with specific written approval, and after specific contractual provisions for restoration of the foundation area have been made. Control measures shall be taken by the time the excavation reaches the water level in order to maintain the integrity of the in situ material.

3.1.3 Underground Utilities

Location of the existing utilities indicated is approximate. The Contractor shall physically verify the location and elevation of the existing utilities indicated prior to starting construction. The Contractor shall contact the Directorate of Public Works for assistance in locating existing utilities.

3.1.4 Machinery and Equipment

Movement of construction machinery and equipment over pipes during construction shall be at the Contractor's risk. Repair, or remove and provide new pipe for existing or newly installed pipe that has been displaced or damaged.

3.2 SURFACE PREPARATION

3.2.1 Clearing and Grubbing

Unless indicated otherwise, remove trees, stumps, logs, shrubs, brush and vegetation and other items that would interfere with construction operations within the lines 5 feet outside of each building and structure line. Remove stumps entirely. Grub out matted roots and roots over 2 inches in diameter to at least 18 inches below existing surface.

3.2.2 Stripping

Strip suitable soil from the site where excavation or grading is indicated and stockpile separately from other excavated material. Material unsuitable for use as topsoil shall be stockpiled and used for backfilling. Locate topsoil so that the material can be used readily for the finished grading. Where sufficient existing topsoil conforming to the material requirements is not available on site, provide borrow materials suitable for use as topsoil. Protect topsoil and keep in segregated piles until needed.

3.2.3 Unsuitable Material

Remove vegetation, debris, decayed vegetable matter, sod, mulch, and rubbish underneath paved areas or concrete slabs.

3.3 EXCAVATION

Excavate to contours, elevation, and dimensions indicated. Reuse excavated materials that meet the specified requirements for the material type required at the intended location. Keep excavations free from water. Excavate soil disturbed or weakened by Contractor's operations, soils softened or made unsuitable for subsequent construction due to exposure to weather. Excavations below indicated depths will not be permitted except to remove unsatisfactory material. Unsatisfactory material encountered below the grades shown shall be removed as directed. Refill with satisfactory material and compact to 95 percent of ASTM D1557 maximum density. Unless specified otherwise, refill excavations cut below indicated depth with satisfactory material and compact to 95 percent of ASTM D1557 maximum density. Satisfactory material removed below the depths indicated, without specific direction of the Contracting Officer, shall be replaced with satisfactory materials to the indicated excavation grade; except as specified for spread footings. Determination of elevations and measurements of approved overdepth excavation of unsatisfactory material below grades indicated shall be done under the direction of the Contracting Officer.

3.3.1 Structures With Spread Footings

Ensure that footing subgrades have been inspected and approved by the Contracting Officer prior to concrete placement. Fill over excavations with concrete during foundation placement.

3.3.2 Pipe Trenches

Excavate to the dimension indicated. During excavation, material satisfactory for backfilling shall be stockpiled in an orderly manner at a distance from the banks of the trench equal to 1/2 the depth of the excavation, but in no instance closer than 2 feet. Excavated material not required or not satisfactory for backfill shall be removed from the site. Grading shall be done as may be necessary to prevent surface water from flowing into the excavation, and any water accumulating therein shall be removed to maintain the stability of the bottom and sides of the excavation. The trench shall be excavated as recommended by the manufacturer of the pipe to be installed. Trench walls below the top of the pipe shall be sloped, or made vertical, and of such width as recommended in the manufacturer's installation manual. Where no manufacturer's installation manual is available, trench walls shall be made vertical. Trench walls more than 5 feet high shall be shored, cut back to a stable slope, or provided with equivalent means of protection for employees who may be exposed to moving ground or cave in. Vertical trench walls more than 15 feet high shall be shored. Trench walls which are cut back shall be excavated to at least the angle of repose of the soil. Special attention shall be given to slopes which may be adversely affected by weather or moisture content. The trench width below the top of pipe shall not exceed 24 inches plus pipe outside diameter (O.D.) for pipes of less than 24 inches inside diameter and shall not exceed 36 inches plus pipe outside diameter for sizes larger than 24 inches inside diameter. Where recommended trench widths are exceeded, redesign, stronger pipe, or special installation procedures shall be utilized by the Contractor. The cost of redesign, stronger pipe, or special installation procedures shall be borne by the Contractor without any additional cost to the Government. Grade bottom of trenches to provide uniform support for each section of pipe after pipe bedding placement. Tamp if necessary to provide a firm pipe bed.

Recesses shall be excavated to accommodate bells and joints so that pipe will be uniformly supported for the entire length. Rock, where encountered, shall be excavated to a depth of at least 6 inches below the bottom of the pipe. Stones of 3 inches or greater in any dimension, or as recommended by the pipe manufacturer, whichever is smaller, shall be removed to avoid point bearing.

3.3.3 Stockpiles

Stockpiles of satisfactory shall be placed and graded as specified. Stockpiles shall be kept in a neat and well drained condition, giving due consideration to drainage at all times. The ground surface at stockpile locations shall be cleared, grubbed, and sealed by rubber-tired equipment, excavated satisfactory and unsatisfactory materials shall be separately stockpiled. Stockpiles of satisfactory materials shall be protected from contamination which may destroy the quality and fitness of the stockpiled material. If the Contractor fails to protect the stockpiles, and any material becomes unsatisfactory, such material shall be removed and replaced with satisfactory material from approved sources at no additional cost to the Government.

3.3.4 Hard Material and Rock Excavation

Remove hard material and rock to elevations indicated in a manner that will leave foundation material in an unshattered and solid condition. Roughen level surfaces and cut sloped surfaces into benches for bond with concrete. Protect shale from conditions causing decomposition along joints or cleavage planes and other types of erosion. Removal of hard material and rock beyond lines and grades indicated will not be grounds for a claim for additional payment unless previously authorized by the Contracting Officer. Excavation of the material claimed as rock shall not be performed until the material has been cross sectioned by the Contractor and approved by the Contracting Officer. Common excavation shall consist of all excavation not classified as rock excavation.

3.3.5 Excavated Materials

Satisfactory excavated material required for fill or backfill shall be placed in the proper section of the permanent work required or shall be separately stockpiled if it cannot be readily placed. Satisfactory material in excess of that required for the permanent work and all unsatisfactory material shall be disposed of as specified in Paragraph "DISPOSITION OF SURPLUS MATERIAL."

3.3.6 Final Grade of Surfaces to Support Concrete

Excavation to final grade shall not be made until just before concrete is to be placed. Only excavation methods that will leave the foundation rock in a solid and unshattered condition shall be used. Approximately level surfaces shall be roughened, and sloped surfaces shall be cut as indicated into rough steps or benches to provide a satisfactory bond. Shales shall be protected from slaking and all surfaces shall be protected from erosion resulting from ponding or flow of water.

3.4 BLASTING

Blasting will not be permitted.

3.5 SUBGRADE PREPARATION

Unsatisfactory material in surfaces to receive fill or in excavated areas shall be removed and replaced with satisfactory materials as directed by the Contracting Officer. The surface shall be scarified to a depth of 6 inches before the fill is started. Sloped surfaces steeper than 1 vertical to 4 horizontal shall be plowed, stepped, benched, or broken up so that the fill material will bond with the existing material. When subgrades are less than the specified density, the ground surface shall be broken up to a minimum depth of 6 inches, pulverized, and compacted to the specified density. When the subgrade is part fill and part excavation or natural ground, the excavated or natural ground portion shall be scarified to a depth of 12 inches and compacted as specified for the adjacent fill. Material shall not be placed on surfaces that are muddy, frozen, or contain frost.

Compaction shall be accomplished by sheepsfoot rollers, pneumatic-tired rollers, steel-wheeled rollers, or other approved equipment well suited to the soil being compacted. Material shall be moistened or aerated as necessary to provide the moisture content that will readily facilitate obtaining the specified compaction with the equipment used. Minimum subgrade density shall be as specified herein.

3.5.1 Proof Rolling

Proof rolling shall be done on an exposed subgrade free of surface water (wet conditions resulting from rainfall) which would promote degradation of an otherwise acceptable subgrade. After stripping, proof roll the existing subgrade of the parking lot with six passes of a dump truck loaded with 212 cubic feet of soil.

Operate the truck in a systematic manner to ensure the number of passes over all areas, and at speeds between 2 1/2 to 3 1/2 miles per hour. Notify the Contracting Officer a minimum of 3 days prior to proof rolling. Proof rolling shall be performed in the presence of the Contracting Officer. Rutting or pumping of material shall be undercut as directed by the Contracting Officer and replaced with select material.

3.6 FILLING AND BACKFILLING

Fill and backfill to contours, elevations, and dimensions indicated. Compact each lift before placing overlaying lift.

3.6.1 Common Fill Placement

Provide for general site. Use satisfactory materials. Place in 6 inch lifts. Compact areas not accessible to rollers or compactors with mechanical hand tampers. Aerate material excessively moistened by rain to a satisfactory moisture content. Finish to a smooth surface by blading, rolling with a smooth roller, or both.

3.6.2 Backfill and Fill Material Placement

Provide for paved areas and under concrete slabs, except where select material is provided. Place in 6 inch lifts. Do not place over wet or frozen areas. Place backfill material adjacent to structures as the structural elements are completed and accepted. Backfill against concrete only when approved. Place and compact material to avoid loading upon or against the structure.

3.6.3 Select Material Placement

Provide under structures not pile supported. Place in 6 inch lifts. Do not place over wet or frozen areas.

Backfill adjacent to structures shall be placed as structural elements are completed and accepted. Backfill against concrete only when approved. Place and compact material to avoid loading upon or against structure.

3.6.4 Backfill and Fill Material Placement Over Pipes and at Walls

Backfilling shall not begin until construction below finish grade has been approved, underground utilities systems have been inspected, tested and approved, forms removed, and the excavation cleaned of trash and debris. Backfill shall be brought to indicated finish grade. Where pipe is coated or wrapped for protection against corrosion, the backfill material up to an elevation 2 feet above sewer lines and 1 foot above other utility lines shall be free from stones larger than 1 inch in any dimension. Heavy equipment for spreading and compacting backfill shall not be operated closer to foundation or retaining walls than a distance equal to the height of backfill above the top of footing; the area remaining shall be compacted in layers not more than 4 inches in compacted thickness with power-driven hand tampers suitable for the material being compacted.

Backfill shall be placed carefully around pipes or tanks to avoid damage to coatings, wrappings, or tanks.

Backfill shall not be placed against foundation walls prior to 7 days after completion of the walls. As far as practicable, backfill shall be brought up evenly on each side of the wall and sloped to drain away from the wall.

3.6.5 Capillary Water Barrier Placement

Provide under floor and area-way slabs on a compacted subgrade. Place in 6 inch lifts with a minimum of two passes of a hand-operated plate-type vibratory compactor.

3.6.6 Trench Backfilling

02315N - 10

Backfill as rapidly as construction, testing, and acceptance of work permits. Place and compact backfill under structures and paved areas in 6 inch lifts to top of trench and in 6 inch lifts to one foot over pipe outside structures and paved areas. Trenches shall be backfilled to the grade shown. The trench shall be backfilled to 2 feet above the top of pipe prior to performing the required pressure tests. The joints and couplings shall be left uncovered during the pressure test.

3.6.6.1 Final Backfill

The remainder of the trench, except for special materials for roadways, shall be filled with satisfactory material.

Backfill material shall be placed and compacted as follows:

a. Roadways: Cover shall be placed as shown in contract drawings then 2" minus rock shall be placed to surface. Water flooding or jetting methods of compaction will not be permitted.

b. Sidewalks, Turfed or Seeded Areas and Miscellaneous Areas: Backfill shall be deposited in layers of a maximum of 12 inch loose thickness, and compacted to 85 percent maximum density for cohesive soils and

90 percent maximum density for cohesionless soils. Compaction by water flooding or jetting will not be permitted. This requirement shall also apply to all other areas not specifically designated above.

3.7 BORROW

Where satisfactory materials are not available in sufficient quantity from required excavations, approved borrow materials shall be obtained as specified herein.

3.8 BURIED WARNING AND IDENTIFICATION TAPE

Provide buried utility lines with utility identification tape. Bury tape 12 inches below finished grade; under pavements and slabs, bury tape 6 inches below top of subgrade.

3.9 COMPACTION

Determine in-place density of existing subgrade; if required density exists, no compaction of existing subgrade will be required. Density requirements specified herein are for cohesionless materials. When cohesive materials are encountered or used, density requirements may be reduced by 5 percent. Approved compacted subgrades that are disturbed by the Contractor's operations or adverse weather shall be scarified and compacted as specified herein before to the required density prior to further construction thereon.

3.9.1 General Site

Compact…