01 50 00-TEMPORARY CONSTRUCTION FACILITIES AND CONTROLS.pdf

SECTION 01 50 00 Page 1

SECTION 01 50 00

TEMPORARY CONSTRUCTION FACILITIES AND CONTROLS

08/09

PART 1 GENERAL

1.1 SUMMARY

1.2 REFERENCES

1.3 SUBMITTALS

1.4 CONSTRUCTION SITE PLAN

1.5 BACKFLOW PREVENTERS CERTIFICATE

PART 2 PRODUCTS

2.1 TEMPORARY SIGNAGE

2.2 TEMPORARY TRAFFIC CONTROL

PART 3 EXECUTION

3.1 EMPLOYEE PARKING

3.2 AVAILABILITY AND USE OF UTILITY SERVICES

3.3 TRAFFIC PROVISIONS

3.4 CONTRACTOR'S TEMPORARY FACILITIES

3.5 TEMPORARY PROJECT SAFETY FENCING

3.6 HOUSEKEEPING AND CLEANUP

3.7 REPAIR OF ROAD CUTS

3.8 EXCAVATION

3.9 PROTECTION OF EXISTING AREAS

PART 1 GENERAL

1.1 SUMMARY

Requirements of this Section apply to, and are a component of, each section of the specifications.

1.2 REFERENCES

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

AMERICAN WATER WORKS ASSOCIATION (AWWA)

AWWA C511 (2007) Standard for Reduced-Pressure Principle Backflow

Prevention Assembly

FOUNDATION FOR CROSS-CONNECTION CONTROL AND HYDRAULIC

RESEARCH (FCCCHR)

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FCCCHR List (continuously updated) List of Approved Backflow Prevention Assemblies

FCCCHR Manual (10th Edition) Manual of Cross-Connection Control

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 241 (2013; Errata 2015) Standard for Safeguarding Construction, Alteration, and Demolition Operations

NFPA 70 (2014; AMD 1 2013; Errata 1 2013; AMD 2 2013; Errata 2 2013; AMD 3 2014; Errata 3-4 2014; AMD 4-6 2014) National Electrical Code

U.S. FEDERAL AVIATION ADMINISTRATION (FAA)

FAA AC 70/7460-1 (2007; Rev K) Obstruction Marking and Lighting

U.S. FEDERAL HIGHWAY ADMINISTRATION (FHWA)

MUTCD (2009) Manual of Uniform Traffic Control Devices

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation; submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Construction site plan; G

Traffic control plan; G

Temporary Power Services Diagram; G

SD-06 Test Reports

Backflow Preventer Tests; G

SD-07 Certificates

Backflow Tester Certification; G

Backflow Preventers Certificate of Full Approval

1.4 CONSTRUCTION SITE PLAN

Prior to the start of work, submit a site plan showing the locations and dimensions of temporary facilities (including layouts and details, equipment and material storage area (onsite and offsite), and

SECTION 01 50 00 Page 3 access and haul routes, avenues of ingress/egress to the fenced area and details of the fence installation.

Identify any areas which may have to be graveled to prevent the tracking of mud. Indicate if the use of a supplemental or other staging area is desired. Show locations of safety and construction fences, site trailers, construction entrances, trash dumpsters, temporary sanitary facilities, and worker parking areas.

1.5 BACKFLOW PREVENTERS CERTIFICATE

Certificate of Full Approval from FCCCHR List, University of Southern California, attesting that the design, size and make of each backflow preventer has satisfactorily passed the complete sequence of performance testing and evaluation for the respective level of approval. Certificate of Provisional Approval will not be acceptable.

1.5.1 Backflow Tester Certificate

Prior to testing, submit to the Contracting Officer certification issued by the State or local regulatory agency attesting that the backflow tester has successfully completed a certification course sponsored by the regulatory agency. Tester must not be affiliated with any company participating in any other phase of this Contract.

1.5.2 Backflow Prevention Training Certificate

Submit a certificate recognized by the State or local authority that states the Contractor has completed at least 10 hours of training in backflow preventer installations. The certificate must be current.

PART 2 PRODUCTS

2.1 TEMPORARY SIGNAGE

2.1.1 Bulletin Board

Immediately upon beginning of work, provide a weatherproof glass-covered bulletin board not less than 36 by 48 inches in size for displaying the Equal Employment Opportunity poster, a copy of the wage decision contained in the contract, Wage Rate Information poster, and other information approved by the Contracting Officer. Locate the bulletin board at the project site in a conspicuous place easily accessible to all employees, as approved by the Contracting Officer.

2.1.2 Project and Safety Signs

If Project Sign is required by delivery order, construct sign with a face sheet of 4- by 8-foot exterior grade plywood, 1/2-inch thick, mounted on a substantial frame of treated lumber. Provide one coat of lead-free alkyd primer paint and two coats of an exterior type white enamel to frame and sign. Erect signs within 15 days after receipt of the notice to proceed. Correct the data required by the safety sign daily, with light colored metallic or non-metallic numerals.

2.1.3 Hard Hat Signs

The Contractor shall provide 24 by 24 inch square Hard Hat Area signs at each entry to the project or work area as directed by the Contracting Officer. A minimum of two signs will be required.

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2.2 TEMPORARY TRAFFIC CONTROL

2.2.1 Haul Roads

At contractor’s expense, construct access and haul roads necessary for proper prosecution of the work under this contract. Construct with suitable grades and widths; sharp curves, blind corners, and dangerous cross traffic are to be avoided. Provide necessary lighting, signs, barricades, and distinctive markings for the safe movement of traffic. The method of dust control, although optional, must be adequate to ensure safe operation at all times. Location, grade, width, and alignment of construction and hauling roads are subject to approval by the Contracting Officer. Lighting must be adequate to assure full and clear visibility for full width of haul road and work areas during any night work operations.

2.2.2 Barricades

Erect and maintain temporary barricades to limit public access to hazardous areas. Whenever safe public access to paved areas such as roads, parking areas or sidewalks is prevented by construction activities or as otherwise necessary to ensure the safety of both pedestrian and vehicular traffic barricades will be required. Securely place barricades clearly visible with adequate illumination to provide sufficient visual warning of the hazard during both day and night.

2.2.3 Fencing

Provide fencing along the construction site at all open excavations and tunnels to control access by unauthorized people. Fencing must be installed to be able to restrain a force of at least 250 pounds against it.

2.2.4 Temporary Wiring

Provide temporary wiring in accordance with NFPA 241 and NFPA 70, Article 305-6(b), Assured Equipment Grounding Conductor Program. Include frequent inspection of all equipment and apparatus.

2.2.5 Backflow Preventers

Reduced pressure principle type conforming to the applicable requirements AWWA C511. Provide backflow preventers complete with 150 pound flanged cast iron, bronze, or brass mounted gate valve and strainer and stainless steel or bronze internal parts. The particular make, model/design, and size of backflow preventers to be installed must be included in the latest edition of the List of Approved Backflow Prevention Assemblies issued by the FCCCHR List and be accompanied by a Certificate of Full Approval from FCCCHR List. After installation conduct Backflow Preventer Tests and provide test reports verifying that the installation meets the FCCCHR Manual Standards.

PART 3 EXECUTION

3.1 EMPLOYEE PARKING

Contractor employees will park privately owned vehicles in an area designated by the Contracting Officer. This area will be within reasonable walking distance of the construction site. Contractor employee parking must not interfere with existing and established parking requirements of the government installation.

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3.2 AVAILABILITY AND USE OF UTILITY SERVICES

3.2.1 Temporary Utilities

Provide temporary utilities required for construction. Materials may be new or used, must be adequate for the required usage, not create unsafe conditions, and not violate applicable codes and standards.

3.2.2 Water

Subject to available supply the Government will make available to Contractor, from existing outlets and supplies, reasonable amounts of potable water without charge. Contractor shall reasonably conserve potable water furnished. Contractor, at its own expense, shall install and maintain necessary temporary connections and distribution lines and shall remove the connections and lines prior to final acceptance of construction.

3.2.3 Electricity

Subject to available supply electric power will be made available by the Government, without charge, to the Contractor for performing work at the work area. The Contractor shall carefully conserve electricity furnished. The Contractor, as required and at its own expense and in a workmanlike manner satisfactory to the Contracting Officer, shall extend the existing electrical distribution system (overhead and underground) for temporary electrical service to the worksite, shall install and maintain necessary temporary connections, and shall remove the same prior to final acceptance of the construction.

Submit Temporary Power Services Diagram for approval by contracting officer. Diagram shall include, but not be limited to, main disconnect, grounding, service drops, service entrance conductors, feeders, GFCI'S, and all site trailer connections.

3.2.3.1 Temporary Power and Lighting

The Contractor shall provide construction power facilities in accordance with the safety requirements of the National Electric Code NFPA No. 70 and the SAFETY AND HEALTH REQUIREMENTS MANUAL EM 385-1-1. The Contractor, or its delegated subcontractor, shall enforce the safety requirements of electrical extensions for the work of subcontractors. Work shall be accomplished by journeyman electricians.

3.2.3.2 Construction Equipment

In addition to the requirements of SAFETY AND HEALTH REQUIREMENTS MANUAL, EM 385-1-1, temporary wiring conductors installed for operation of construction tools and equipment shall be either Type TW or THW contained in metal raceways, or shall be hard usage or extra hard usage multiconductor cord. Temporary wiring shall be secured above the ground or floor in a workmanlike manner and shall not present an obstacle to persons or equipment. Open wiring may only be used outside of buildings, and then only in accordance with the provisions of the National Electric Code.

3.2.4 Obstruction Lighting of Cranes

Provide a minimum of 2 aviation red or high intensity white obstruction lights on temporary structures (including cranes) over 100 feet above ground level. Light construction and installation must comply

SECTION 01 50 00 Page 6 with FAA AC 70/7460-1. Lights must be operational during periods of reduced visibility, darkness, and as directed by the Contracting Officer.

3.2.5 Fire Protection

During the construction period, the Contractor shall provide fire extinguishers in accordance with the safety requirements of the SAFETY AND HEALTH REQUIREMENTS MANUAL, EM 385-1-1. The Contractor shall remove the fire extinguishers at the completion of construction. Provide temporary fire protection equipment for the protection of personnel and property during construction. Remove debris and flammable materials daily to minimize potential hazards.

3.3 TRAFFIC PROVISIONS

3.3.1 Maintenance of Traffic

3.3.1.1 Traffic Control Plan

If street closures or diversions are required by the scope of work of the Task Order, the Contractor shall submit a Traffic Control Plan for moving traffic through and around the construction zone in a manner that is conducive to the safety of motorists, pedestrians, and workers. The plan must be in accordance with State and local regulations and the MUTCD, Part VI and shall indicate scheduling, placement, and maintenance of traffic control devices in accordance with the U.S. Department of Transportation, Federal Highway Administration publication, Manual on Uniform Traffic Control Devices. The Contractor shall obtain, in writing, from the Directorate of Public Works (PW) Transportation Systems Engineer, through the Contracting Officer, approval of the Traffic Control Plan. The Contractor shall submit his Traffic Control Plan at least 15 working days prior to commencement of street or road work.

Streets (except dead end) may be closed to traffic temporarily (except at least one access lane shall be kept open to traffic) by approved written request to the Contracting Officer at least 10 working days prior to street closure. Excavations shall not remain open for more than 1 working day without approval. The Contractor shall identify by site inspection and indicate on the plan all roads and trails used by military or civilian wheeled and tracked vehicular traffic and, by traffic control devices, prevent this traffic from entering the construction zone. Make all notifications and obtain any permits required for modification to traffic movements outside JBLM jurisdiction.

3.3.1.2 Traffic Control

a. The Contractor shall provide for movement of traffic through and around the construction zone in a manner that is conducive to the safety of motorists, pedestrians, and workers. This shall include placement and maintenance of traffic control devices in accordance with the U.S.

Department of Transportation, Federal Highway Administration publication, Manual on Uniform Traffic Control Devices. Streets (except dead end) may be closed to traffic temporarily by approved written request to the Contracting Officer at least 10 working days prior to street closure. Street closures shall at all times allow street access to a building from one direction.

Excavations shall not remain open for more than 1 working day without approval.

b. Conduct work so as to minimize obstruction of traffic, and maintain traffic on at least half of the roadway width at all times. Obtain approval from the Contracting Officer prior to starting any activity that will obstruct traffic.

c. Provide, erect, and maintain, at contractors expense, lights, barriers, signals, passageways, detours, and other items, that may be required by the authority having jurisdiction.

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3.3.2 Protection of Traffic

Maintain and protect traffic on all affected roads during the construction period except as otherwise specifically directed by the Contracting Officer. Measures for the protection and diversion of traffic, including the provision of watchmen and flagmen, erection of barricades, placing of lights around and in front of equipment the work, and the erection and maintenance of adequate warning, danger, and direction signs, will be as required by the State and local authorities having jurisdiction. Protect the traveling public from damage to person and property. Minimize the interference with public traffic on roads selected for hauling material to and from the site. Investigate the adequacy of existing roads and their allowable load limit. Contractor is responsible for the repair of any damage to roads caused by construction operations.

3.3.3 Dust Control

Dust control methods and procedures must be approved by the Contracting Officer. Treat dust abatement on access roads with applications of calcium chloride, water sprinklers, or similar methods or treatment.

3.4 CONTRACTOR'S TEMPORARY FACILITIES

3.4.1 Administrative Field Offices

Government office and warehouse facilities will not be available to the Contractor's personnel on JBLM. The Contractor shall provide a temporary portable office on JBLM at its expense. Costs for connection to utilities and security of the office shall be at the contractor's expense.

The Contractor will be provided an area on JBLM approximately one-hundred feet by one-hundred fifty feet for installation of a portable office and storage. This area will be unimproved. Any improvements, additions or extensions of utility lines into this area shall be submitted for approval prior to accomplishment and shall be paid for by the Contractor. All site work and setup are the Contractor's responsibility and shall be paid by the contractor. The site location will be provided at the Pre-Construction Conference.

Upon completion of the project remove the bulletin board, signs, barricades, haul roads, and any other temporary products from the site. After removal of trailers, materials, and equipment from within the fenced area, remove the fence that will become the property of the Contractor. Restore to the original or better condition, areas used by the Contractor for the storage of equipment or material, or other use.

Gravel used to traverse grassed areas must be removed and the area restored to its original condition, including top soil and seeding as necessary.

3.4.2 Utilizes

3.4.2.1 Water

Subject to available supply the Government will make available to Contractor, from existing outlets and supplies, reasonable amounts of potable water without charge. Contractor shall reasonably conserve potable water furnished. Contractor, at its own expense, shall install and maintain necessary temporary connections and distribution lines and shall remove the connections and lines prior to final acceptance of construction.

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3.4.2.2 Electricity

Subject to available supply electric power will be made available by the Government, without charge, to the Contractor for performing work at the work area. The Contractor shall carefully conserve electricity furnished. The Contractor, as required and at its own expense and in a workmanlike manner satisfactory to the Contracting Officer, shall extend the existing electrical distribution system (overhead and underground) for temporary electrical service to the worksite, shall install and maintain necessary temporary connections, and shall remove the same prior to final acceptance of the construction.

The Contractor shall provide, as necessary, all electrical hookups to include temporary transformers, additional poles, wire, weatherheads, panels and any other item needed for power. Final electrical hookup shall be done after approval of PW COR, which requires a written two day notification of hookup. Electrical work shall conform to the latest edition of the National Electrical Code (NEC).

3.4.2.3 Sanitation

Contractor shall provide sanitary accommodations for the use of employees as may be necessary and shall maintain accommodations approved by the Contracting Officer and shall comply with the requirements and regulations of the State Health Department, County Sanitarian, or other authorities having jurisdiction.

3.4.2.4 Telephone

Make arrangements and pay all costs for telephone facilities desired.

3.4.3 Condition of Contractor's Facilities and/or Storage Site

a. Trailers utilized by the Contractor for administrative or material storage purposes must present a clean and neat exterior appearance and be in a state of good repair. Trailers which, in the opinion of the Contracting Officer, require exterior painting or maintenance will not be allowed on installation property.

b. Paint using suitable paint and maintain the temporary facilities. Failure to do so will be sufficient reason to require their removal.

c. The Contractor's facilities and storage site shall be neat, clean and orderly at all times. There shall be no trash, debris or other objectionable material within the Contractor's area except in dumpsters or other manufactured receptacles used for disposal purposes. Materials shall be sorted, stacked in neat piles and separated. Equipment and vehicles shall be located in one area of the site. Dumpsters and other receptacles shall not be filled to overflowing and shall be located in the most inconspicuous area of the site visible from main roads.

d. All facilities, equipment and vehicles shall be in proper repair and usable. Any rusted, broken, torn, bent or otherwise objectionable facilities, equipment, material, dumpsters or vehicles shall be immediately removed from the Contractor's site. Only normal operator maintenance will be allowed on contractor's vehicles on site.

e. Security fencing consisting of a six foot high chain-link fence with a top outrigger of three strand barbed wire may be provided at the Contractor's option. Fencing shall be new in appearance.

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f. The Contractor shall provide a white painted metal job sign to be installed on the office or security fence. The sign shall be produced commercially. It shall include Contractor's name and the project name in four inch high black lettering.

3.4.4 Maintenance of Storage Area

a. Keep fencing in a state of good repair and proper alignment. Grassed or unpaved areas, which are not established roadways, will be covered with a layer of gravel as necessary to prevent rutting and the tracking of mud onto paved or established roadways, should the Contractor elect to traverse them with construction equipment or other vehicles; gravel gradation will be at the Contractor's discretion. Mow and maintain grass located within the boundaries of the construction site for the duration of the project. Grass and vegetation along fences, buildings, under trailers, and in areas not accessible to mowers will be edged or trimmed neatly.

3.4.5 New Building

In the event a new building is constructed for the temporary project field office, it will be a minimum 12 feet in width, 16 feet in length and have a minimum of 7 feet headroom. Equip the building with approved electrical wiring, at least one double convenience outlet and the required switches and fuses to provide 110-120 volt power. Provide a work table with stool, desk with chair, two additional chairs, and one legal size file cabinet that can be locked. The building must be waterproof, supplied with a heater, have a minimum of two doors, electric lights, a telephone, a battery operated smoke detector alarm, a sufficient number of adjustable windows for adequate light and ventilation, and a supply of approved drinking water. Approved sanitary facilities must be furnished. Screen the windows and doors and provide the doors with dead bolt type locking devices or a padlock and heavy duty hasp bolted to the door. Door hinge pins will be non-removable. Arrange the windows to open and to be securely fastened from the inside. Protect glass panels in windows by bars or heavy mesh screens to prevent easy access. In warm weather, furnish air conditioning capable of maintaining the office at 50 percent relative humidity and a room temperature 20 degrees F below the outside temperature when the outside temperature is 95 degrees F. Any new building erected for a temporary field office must be maintained by the Contractor during the life of the contract and upon completion and acceptance of the work become the property of the Contractor and removed from the site. All charges for telephone service for the temporary field office will be borne by the Contractor, including long distance charges up to a maximum of $75.00 per month.

3.4.6 Security Provisions

Provide adequate outside security lighting at the Contractor's temporary facilities. The Contractor will be responsible for the security of its own equipment; in addition, the Contractor will notify the appropriate law enforcement agency requesting periodic security checks of the temporary project field office.

3.5 TEMPORARY PROJECT SAFETY FENCING

As soon as practicable, but not later than 15 days after the date established for commencement of work, furnish and erect temporary project safety fencing at the work site. The safety fencing must be a high visibility orange colored, high density polyethylene grid or approved equal, a minimum of 42 inches high, supported and tightly secured to steel posts located on maximum 10 foot centers, constructed at the approved location. Maintain the safety fencing during the life of the contract and, upon completion

SECTION 01 50 00 Page 10 and acceptance of the work, will become the property of the Contractor and be removed from the work site.

3.6 HOUSEKEEPING AND CLEANUP

Pursuant to the requirements of Clause CLEANING UP and Clause ACCIDENT PREVENTION, of the CONTRACT CLAUSES, the Contractor shall assign sufficient personnel to ensure compliance.

The Contractor shall submit a detailed written plan for implementation of this requirement. The plan will be presented as part of the preconstruction safety plan and will provide for keeping the total construction site, structures, and access ways free of debris and obstructions at all times. Work will not be allowed in those areas that, in the opinion of the Contracting Officer, have unsatisfactory cleanup and housekeeping at the end of the preceding day's normal work shift. At least once each day all areas shall be checked by the Quality Control person of the Contractor and the findings recorded on the Quality Control Daily Report. In addition, the Quality Control person shall take immediate action to ensure compliance with this requirement. Housekeeping and cleanup shall be assigned by the Contractor to specific personnel. The name(s) of the personnel shall be available at the project site.

Remove construction debris, waste materials, packaging material and the like from the work site daily.

Any dirt or mud which is tracked onto paved or surfaced roadways must be cleaned away. Store within the fenced area described above or at the supplemental storage area any materials resulting from demolition activities which are salvageable. Neatly stacked stored materials not in trailers, whether new or salvaged.

3.7 REPAIR OF ROAD CUTS

Asphaltic surface shall be completely in place within 48 hours after placement of base gravel. Between placement of base gravel and pavement, road shall be kept in driveable and passable condition.

3.8 EXCAVATION

3.8.1 DIGGING PERMIT

Before performing any onsite excavation on JBLM, Contractor shall obtain a digging permit. The digging permit can be obtained at Directorate of Public Works, Building 2044, Door #3, telephone 253- 967-5237, on weekdays between 8 a.m. and 3:30 p.m. Typically it will take a Contractor 3-5 working days to collect all signatures necessary for clearances prior to the permit being issued. For more information, see the Public Works Digging Permit Desk web site at the following URL:

http://www.lewis.army.mil/publicworks/sites/services/digPermit.htm

Before performing any onsite excavation at other locations, the Contractor shall notify the installation facility manager and the appropriate local authorities as required to obtain a digging permit and clearances from all the various utilities. Copies of clearances shall be provided to the Government Representative. Utility lines shall be marked in the field prior to excavation. The locations of any utilities obtained from the clearances shall be verified on or added to the as-built drawings.

3.8.2 UTILITY LOCATOR/IDENTIFICATION TAPE

Unless specified otherwise elsewhere in the Contract, all installed utility lines shall have a plastic marker tape (minimum 150 mm wide and 0.125 mm thick, installed 200 mm to 260 mm below grade.

The plastic marker tape shall include a metallic wire or metal foil backing for detection purposes, and

SECTION 01 50 00 Page 11 shall bear a continuous printed inscription describing the type of utility line buried below. All underground exterior gas lines shall be provided with a continuous tracer wire (#12 wire) taped to the pipe. Utility line monument markers (concrete with brass identification plugs) shall be installed every 60 meters along straight runs and at each change of direction. Any existing marker tapes or tracer wires damaged during construction shall be repaired to original condition.

3.8.3 CONSTRUCTION NEAR COMMUNICATIONS CABLES

3.8.3.1 Excavation Near Communication Cables

Digging within 3 feet of communication cables (including fiber optic cables) shall be performed by hand digging until the cable is exposed. The Contracting Officer shall be notified a minimum 3 days prior to digging within a 3-foot area near cable. The cable route will be marked by the Government prior to excavation in the area. A digging permit shall be obtained by the Contractor before performing any excavation. The Contractor shall be held responsible for any damage to the cable by excavation procedures. Once the cable is exposed, mechanical excavation may be used if there is no chance of damage occurring to the cable.

3.8.3.2 Reburial of Exposed Utilities

When existing utility lines are reburied a locator/identification tape, detectable by pipe detector systems, shall be installed above the uncovered length of the utility. See paragraph UTILITY LOCATOR/IDENTIFICATION TAPE above for detailed tape and installation requirements.

3.8.3.3 Access to Communications Manhole or Handhole

No communications manhole or handhole shall be entered without first obtaining a fiber optic cable briefing. Coordinate through the Contracting Officer with USAISC, JBLM, Outside Plant Branch, Cable Section, Bldg. 2682 or other agency as appropriate for project location.

3.8.3.4 Cable Cuts or Damage

If a communications cable is cut or damaged the Contractor shall immediately notify the Contracting Officer (CO) and begin gathering personnel and equipment necessary to repair the cut, or damage.

Contractor shall begin repairs within one hour of the cut or damage, unless notified otherwise, and continue repairs without interruption until full service is restored.

3.8.4 UTILITIES NOT SHOWN

The Contractor can expect to encounter utilities not shown on the drawings. The Contractor shall scan the construction site with electromagnetic or sonic equipment, and mark the surface of the ground where existing utilities are discovered. The Contractor shall verify the elevations of existing utilities, piping and any type of underground obstruction not indicated, or indicated and not specified to be removed. If such utilities interfere with construction operations, he shall immediately notify the Contracting Officer verbally and then in writing to enable a determination by the Contracting Officer as to the necessity for removal or relocation. If such utilities are removed or relocated as directed, the Contractor shall be entitled to equitable adjustment for any additional work or delay. The types of utilities the Contractor may encounter are waterlines, sewer lines (storm and sanitary), gas lines, fueling lines, steam lines, buried fuel tanks, septic tanks, other buried tanks, communication lines, and power lines. These utilities may be active or abandoned.

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3.9 PROTECTION OF EXISTING AREAS

3.9.1 Family Housing and other than Family Housing Occupied Areas

Family housing areas are designated areas at JBLM and other installations in which soldiers and their families live. Occupied areas are any buildings such as barracks, youth and child centers, administration, storage or office buildings and surrounding areas, such as lawns, gardens, playgrounds, sidewalks, paved areas and paths.

a. In family housing areas and other areas where children and teenagers may be located (other than troop barracks and storage and office buildings) the following requirements apply in addition to the basic requirements:

(1) Any excavation or trench greater than 24 inches in depth that will be left open without workmen at the site shall have a six foot high fence around the trench or excavation. The fence shall be wire, chain link, or wood with no sharp protrusion which may cause injury.

The fence shall be new in appearance with no rust and no broken or bent components. The fence shall be located at a safe distance from the trench or excavation and shall be able to withstand a 100 pound force applied horizontally midway between supports with no failure.

The Contractor may request in writing to the Contracting Officer's Representative (COR), an exception to the fence requirement for holes such as post holes and other limited excavation. The Contractor must state in the request for approval the reason and circumstances for the request. The COR may or may not grant the approval at the Government's sole discretion. If no answer is received by the Contractor within three working days, the request shall be considered disapproved.

b. Any material (including excavated material) stored within the family housing or occupied areas over four feet in height or any material deemed hazardous (such as sharp rocks and boards with nails for example) at the sole discretion of the Government, will require a six foot high fence surrounding the material. The fence shall conform to requirements listed under item a. (1) above

c. Vehicles or equipment stored in designated staging areas shall have the same fencing requirement as above.

d. Excavations shall be filled and the area restored immediately after work is completed in that area.

e. Only the minimum and essential vehicles to do the work shall be used in a particular area. If equipment or vehicles are not being used, they shall be removed from the site.

f. Entrances, walkways and access ways shall remain usable and safe during the work unless otherwise specified or approved. The Contractor shall coordinate and communicate the status of work to all personnel (occupants or other user) being affected by the work operations.

g. Vehicles or equipment shall not be allowed on lawn or landscaped areas unless proper protection is provided. Plywood of proper thickness and structure may be used to distribute equipment and vehicle loads. Damage caused by Contractor to lawns and landscaped areas shall be immediately repaired. The Contractor shall use topsoil, seed, sod, flowers, plants and trees as necessary to restore lawns and landscaped areas. Sod shall be used for established lawn areas.

Seeding, sodding and planting may be delayed because of inclement weather. Delay requests for

SECTION 01 50 00 Page 13 restoration shall be submitted in writing to the Contracting Officer for approval. Contractor shall be liable for costs of restoring damaged lawns and landscape areas at his expense.

h. All required signs such as warning and directional signs shall be a standard manufactured item.

Any special signage shall be shop fabricated of new exterior wood, properly painted and lettered.

No field fabricated signs will be permitted unless specifically directed by the Government for emergency or hazardous situations.

3.9.2 Unoccupied Areas

Unoccupied areas are any place other than family housing and occupied areas. All requirements for unoccupied areas shall be the same as the family housing and occupied areas, except fencing around excavation and storage. Fencing as specified in family housing and occupied areas is required when excavations and trenches are over four feet deep. Trenches and excavations between one foot and four feet deep shall be covered by adequate plywood or steel plate to support people and vehicle loads as applicable. In addition, trenches and excavations less than four feet deep shall have warning tape and barricades on each side of the trench or around the excavation with reflectors and/or flashing lights if the trench is covered at night.

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3.8.4 UTILITIES NOT SHOWN