Amendment_0001_Package.pdf

Amendment No. 0001 to Solicitation No. R15PS00101 Page 3 of 3

Description of Changes: The following changes are hereby made to the subject solicitation:

1. Statement of Work – Section 14 Guardrails of the Statement of Work is changed to further specify steel as the type of guardrail required for this project. The Statement of Work is to be replaced in its entirety.

2. The date specified for receipt of Bids is extended from April 23, 2015 to April 29, 2015 at 14:30 hrs.

3. Questions & Answers - The answers to questions posed regarding this solicitation are hereby incorporated and made a part of the solicitation.

4. Site Visit Attendees List

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U.S. Department of the Interior Bureau of Reclamation Lower Colorado Region Yuma Area Office Yuma, Arizona

Statement of Work Yuma Area Office

Senator Wash Road Guardrail Replacement Project

Contents

Page

Acronyms and Abbreviations ............................................................................ i

1. Background

2. Location

3. Site Conditions

4. Objective

Demolition Legal Disposal Salvage Guardrail Approved Source Demolition Plan California Department of Transportation (Caltrans) Standard Specifications

5. Project Description

6. Construction Survey and Staking

Personnel Equipment Material Control points

7. Demolition

8. Removal of Structures and Obstruction

9. Removal of Guardrail

10. Earthwork

11. Placement of Backfill

12. Compaction of Backfill

13. Compaction

14. Guardrail

Construction Requirements Roadway Guardrail Guardrail End Terminal Assemblies Bolted Guardrail Anchors Guardrail Transitions Guardrail Terminals

15. Traffic Control Maintenance and Protection of Traffic Flash Arrow Panels Pavement Marking Paint Temporary Sign Supports Delineators

Barricades Construction Requirements Sign Sheetings Temporary Removal or Covering of Signs Safety and Health Performance of Work

16. As-Built Drawings

17. Miscellaneous Requirements

Key Personnel Permits, General Storm Water Pollution Prevention Plan (SWPPP)

18. Deliverables References Drawings

19.

Photos………………………………………………………………………23-28

Statement of Work Yuma Area Office S24 Roadway Paving and Resurfacing Contract i

Acronyms and Abbreviations

AASHTO American Association of State Highway and Transportation Officials

ADOT State of Arizona/Arizona Department of Transportation

ARAM Asphalt-Rubber and Aggregate Membrane

ARHM Asphalt Rubber Hot Mix

ASTM American Society for Testing and Materials

Caltrans State of California/California Department of Transportation

CO Contracting Officer

COR Contracting Officer’s Representative cP centipoise

CRM crumb rubber modifier

ft. feet g gram

HASP health and safety plan

IDIQ Indefinite Delivery/Indefinite Quantity

in. inch min. minute mm millimeter

MUTCD Manual on Uniform Traffic Control Devices

NDOT State of Nevada/Nevada Department of Transportation

OBC Optimum Bitumen Content

OSHA Occupational Safety and Health Administration psi pounds per square inch

RPME Rubberized Polymer Modified Emulsion

RSHS Reclamation Safety and Health Standards

SOW Statement of Work

SWPPP Storm Water Pollution Prevention Plan µm micrometer

YAO Yuma Area Office, Yuma, Arizona

YDP Yuma Desalting Plant

R15PS00101- Amendment 0001

1. Background

The Bureau of Reclamation, Lower Colorado Region, Yuma Area Office (YAO) has management jurisdiction of facilities and structures that consist of parking lots, storage areas, and roadways throughout Arizona, California, and Nevada. The YAO has operations and maintenance responsibility of these facilities and structures beginning at Davis Dam and extending south for approximately 276 miles to the Southerly International Border with Mexico.

The YAO is responsible for maintaining the existing facilities.

The existing roadways have features that include, but are not limited to, guardrails, drainage culverts, headwalls, concrete curbs, and concrete pads. Many of the facilities and structures are showing indications of wear and require repair or replacement.

2. Location

Senator Wash roads and parking lots are located in Imperial County, California, approximately 18 miles north of Yuma, Arizona and 2 miles upstream from Imperial Dam. The 12,000 acre-foot active capacity reservoir and pump-generation facility provides for the optimization of river operations in the lower stretch of the Colorado River.

The limits of the work is the Squaw Lake Dike Road section approximately .75+/- miles long.

3. Site Conditions

The weather in Yuma and Imperial Counties is typical of the desert southwest. Summer highs can reach 120 degrees Fahrenheit with lows into the low 80s at night. There can be as much as a 50 degree difference in temperature over the course of a 24-hour period. Late fall and winter temperatures are generally mild with a slight possibility of freezing during the late winter months. Strong winds and dust storms are possible throughout the year, but are generally experienced during the spring months. Thunderstorms and flash floods are also possible during monsoon season in the late summer months (August and September). Rain is also possible during the late winter and early spring months. Average annual rainfall for the area is approximately 3 inches (in.).

Overhead and underground utilities are located near the existing job site. Special caution shall be used around them and they shall be located prior to work.

In the event that unidentified utilities are encountered, work will stop until the Contracting Officer’s Representative (COR) has been contacted and the utility can be identified. The contractor will not resume work until authorized by the Contracting Officer (CO).

4. Objective

Establish a contract for all of the labor, materials, equipment, and incidentals necessary to replace existing steel cable guardrail system along the Squaw Lake Dike Road. The work will include, but is not limited to, removal of the existing cable and rail post support, recycling of existing rail posts and cable, field surveying necessary for the establishment of the guardrail alignment along Squaw Lake Road, furnishing and installing new posts, blocking, and steel guardrails per this SOW and associated drawings.

Demolition Removing and recycling the existing cable guardrail system (posts and steel cable) within the project limits as described in the Statement of Work (SOW) or any accompanying drawings.

Removal work shall apply to all designated cable and post system whether on, above, or below the ground surface.

Legal Disposal The removal of demolished materials shall be recycled by the contractor. The Contractor shall present the proof of the recycled material to the Government. All other construction debris and trash will be disposed of in accordance with Federal, state, city, and county statutes.

Salvage Removing, securing, and storing designated guardrail material for reuse by the contractor or by the Government.

Guardrail Approved Source The contractor shall submit guardrail information for review and approval by the Government.

Demolition Plan Detailed written procedures for the removal, reuse, and recycling of existing cable guardrails, associated structures, and miscellaneous designated items as described in the SOW or in any accompanying drawings.

California Department of Transportation (Caltrans) Standard Specifications

Standard Specifications, State of California, Business, Transportation and Housing Agency, Department of Transportation, 2010, issued by Department of Transportation (referred to as Standard Specifications)

5. Project Description

Work shall conform to the Reclamation Safety and Health Standards (RSHS); take all necessary precautions to ensure the safety of the public.

Work may include, but are not limited to, any or all of the following tasks:

a. The contractor shall conduct mobilization and demobilization, along with preparatory work indicated in the SOW.

b. The contractor shall provide bonding and insurance as indicated in the SOW.

c. The contractor shall provide all labor, equipment, and materials required for protection of traffic for Federal, state, city, and county agencies for the construction work listed in the

SOW.

d. The contractor shall provide qualified personnel and necessary equipment to survey, stake, calculate, and record data for the control of work for placement of new guardrails as indicated in the SOW.

e. Remove and recycle the existing cable guardrail system.

f. Furnish all labor, equipment, materials and documentation for recycling all existing cable guardrail materials at a licensed recycling vendor as indicated in the SOW.

g. Furnish all labor, equipment, and materials required to perform earthwork for backfilling and compacting existing guardrail holes indicated in the SOW.

h. Furnish and install 7,938 linear feet of American Association of State Highway and

Transportation Officials (AASHTO) approved guardrailing, terminals, blocks, and post system as indicated in the drawings and SOW.

i. Furnish and submit all permits, licenses, and regulatory approvals that may be required by, including but not limited to, Federal, state, city, and county agencies.

j. Furnish and submit As-built drawings at the completion of the project, both hard copies, and electronic to the Government.

The contractor will submit a construction plan and schedule, detailing the proposed sequence of construction.

The contractor shall perform work only Monday through Friday. The contractor at their option may work a 5/8 schedule or a 4/10 schedule. Work outside of the 5/8 or 4/10 work schedule must be submitted to the Government in writing for approval at least 48 hours prior to any change in the established work schedule.

The contractor shall supply all utilities which includes but not limited to water, electric, and fuel for the work designated in the SOW. Government will assist the contractor in locating a possible water source, but it will be the responsibility of the contractor to make arrangements to provide water to the construction area.

6. Construction Survey and Staking

The work under this section shall consist of furnishing all materials, personnel, equipment, and incidentals necessary to perform the required surveying, staking, and verification of the accuracy existing Government provided control points. Included in this work shall be all calculations required for the satisfactory completion of projects, including grade and drain, overlay, safety, landscape, rest areas, structures, surfacing projects, or combinations thereof, in conformance with the plans and these specifications. The work shall include establishing and marking as-built elevations on right-of-way markers, bridges, and culverts. The work shall be done under the direction of a registered professional engineer or a registered land surveyor employed by the contractor. The crew chief shall be National Institute for Certification in Engineering Technologies (NICET) Certified Level III or a registered professional land surveyor. A minimum of 50 percent of the survey crew shall be NICET Certified Level II or possess at least a Land Surveyor-In-Training certificate. All right-of-way monuments and lines shall be established by a registered land surveyor employed by the contractor.

When utility adjustments are a part of the contract, the contractor shall perform all layout work and set all control points, stakes, and references necessary for carrying out all such adjustments.

The contractor shall provide qualified personnel and necessary equipment to survey, stake, calculate, and record data for the control of work. Resumes demonstrating the required experience shall be submitted to the COR for approval prior to starting any survey.

Personnel, equipment, and material shall conform to the following:

Personnel Furnish technically qualified survey crews experienced in highway construction surveying and staking. An acceptable crew supervisor shall be on the project whenever surveying/staking is in progress. The survey crews’ experience in highway construction surveys shall be a minimum of 5 years.

Equipment Furnish survey instruments and supporting equipment capable of achieving the specified tolerances.

Material Furnish acceptable tools, supplies, and stakes of the type and quality normally used in highway survey work and suitable for intended use that is approved by the Government. Furnish stakes and hubs of sufficient length to provide a solid set in the group with sufficient surface area above ground for necessary legible markings.

The Government will set initial control points, as indicated and has provided data for use in establishing control for the completion of each element of the survey and staking work.

Notify the COR of any missing control points or stakes before beginning construction. The Government will reestablish initial control points before the beginning of construction.

The contractor may perform any additional calculations using Government-furnished data. The contractor is required to provide immediate notification of any apparent errors in the initial staking or in the data.

Preserve all initial reference and control points. After beginning construction, the contractor is required to replace all destroyed or disturbed initial reference or control points necessary to the work during or after the completion of the project.

The construction survey and staking may be spot-checked by the Government or its representative for accuracy, and unacceptable portions of work may be rejected. Resurvey rejected work and correct work within acceptable tolerances from the Construction Survey and Staking Tolerances (Table 1). Acceptance of the construction staking does not relieve the contractor of responsibility for correcting errors discovered during the work and for bearing all additional costs associated with the error.

Remove and dispose of all flagging, lath, stakes, and other staking material after the project is complete.

Perform all surveying, staking, recording of data, and calculations as necessary to construct the project from initial layout to final completion. Reset stakes as many times as necessary to construct the work.

Control points Relocate initial horizontal and vertical control points in conflict with construction to areas that will not be disturbed by construction operations. Furnish the coordinates and elevations for the relocated points before the initial points are disturbed.

7. Demolition

The contractor shall perform all removal and disposal operations in a manner, so as not to cause damage to existing structures and/or pavement to remain in place.

Completely remove the indicated cable guard rails and steel posts as indicated on the drawings and in the SOW.

Remove and transport construction debris and rubbish in a manner that will prevent spillage on public roadways and adjacent areas. Clean up spillage from streets and adjacent areas.

Removed guardrail materials can be reused, and or stockpiled at the designated locations for future transporting to a cycling vendor.

During demolition and disposal activities, prevent the spread of dust and debris. The contractor shall avoid the creation of a dust nuisance in the surrounding area in compliance with Federal, state, and local statutes.

8. Removal of Structures and Obstruction

The work under this section shall consist of the removal, wholly or in part, and satisfactory disposal of all structures and obstructions within the right-of-way which have not been designated on the project plans to remain, except for those structures and obstructions which are to be removed and disposed of under other items of work in the contract. The work shall also include salvaging of designated materials and backfilling the resulting cavities.

Existing structures, pavement, and other existing improvements that are to become an integral part of the planned improvements shall remain, even though they are not specifically noted.

Materials removed and not designated to be salvaged or incorporated into the work shall become the property of the contractor.

Items designated to be salvaged shall be carefully stockpiled or stored by the contractor at locations as directed by the CO.

Items that are to be salvaged or reused in the new construction and are damaged or destroyed as a result of the contractor's operations shall be repaired or replaced by the contractor at no additional cost to the Government.

Holes, cavities, trenches and depressions resulting from the removal of structures or obstructions (except in areas to be excavated) shall be backfilled with suitable material which shall be compacted to a density of not less than 95 percent of the maximum dry density of a Standard or Modified Proctor as determined in accordance with the requirements of the applicable test methods noted on the task order or as directed and approved by the CO.

9. Removal of Guardrail

All guardrails to be removed shall become the property of the contractor unless otherwise specified on the project plans or outlined in the associated SOW.

If a guardrail is designated to be removed and salvaged, the contractor shall carefully dismantle the wire and remove the posts in such a manner as to prevent any damage to the removed items.

The guard wire, posts and all hardware shall be salvaged in accordance with the requirements of this SOW.

10. Earthwork

The work under this section shall consist of performing all operations necessary to excavate all materials, regardless of character and subsurface conditions, from the roadway or adjacent thereto; to excavate drainage and irrigation ditches and channels; to excavate for structures, culverts, and other facilities; to furnish and place borrow material for use as specified; to construct embankments; to place backfills for structures, culverts and other facilities; to backfill holes, pits and other depressions within the roadway area; to remove and replace unsuitable material; to excavate and grade road approaches, driveways and connections; and to apply water for compaction, all as designated on the project plans or directed by the Government. This section includes the furnishing and installing of a geo composite drainage system as an abutment or retaining wall drainage when specified in the plans. All geo composite drainage materials and installation shall be as approved by the Government. This section shall consist of furnishing and placing suitable and satisfactory material obtained from sites outside of the right-of-way for use in embankments, shoulders, berms, dikes, and other similar purposes. The widening of roadway cuts and ditches and similar work within the right-of-way shall be considered as roadway excavation, not borrow.

Operations shall be conducted such that existing roadway facilities, utilities, railroad tracks and other non-highway facilities that are to remain in place will not be damaged. The contractor, at its expense, shall furnish and install sheet piling, cribbing, bulkheads, shoring, or provide whatever means necessary to adequately support the facilities which are to remain, and maintain such supports until they are no longer needed. Temporary pavements, facilities, utilities, and installations shall also be protected until they are no longer required. When temporary supports and other protective means are no longer required, they shall be removed and disposed of by the contractor.

When hauling is done over highways or city streets, the loads shall comply with legal load requirements, all material shall be removed from shelf areas of vehicles in order to eliminate spilling of material, and loads shall be watered or covered to eliminate dust.

All suitable material removed from excavated areas within the project limits shall be used in the construction of embankments and other designated areas.

For additional earthwork information refer to the Reclamation Earth Manual at the link listed below. http://www.usbr.gov/pmts/materials_lab/pubs/earth.pdf

11. Placement of Backfill

All earth material which has loosened or collapsed into the excavation from the adjacent ground and all trash, forms, and loose large rock shall be removed from the excavation before backfill is placed.

Backfill material shall not be placed against the back of concrete abutments, or cast-in-place concrete structures until the concrete has developed its full design strength.

Backfill material shall not be placed against concrete structures not designed to retain earth loads until the concrete has attained a minimum compressive strength of 2,000 pounds per square in.

and in no case before 72 hours after placing. Backfill shall be placed uniformly on each side of the structure, and at all times during placement shall be not more than 2 ft. above any other side.

Unless otherwise shown on the plans, minor structures such as catch basins, which are furnished as precast structures, shall be placed on a layer of structure backfill at least 6 in. in depth. The layer shall have been shaped to fit the bottom surface of the precast unit and compacted to a http://www.usbr.gov/pmts/materials_lab/pubs/earth.pdf density of not less than 100 percent of the maximum density as determined in accordance with the requirements of the applicable test methods of the Caltrans Materials Testing Manual, as directed and approved by the Government at the time the unit is placed, the moisture content of the layer shall be at or near the optimum moisture as determined in accordance with the requirements of the applicable test methods of the Caltrans Materials Testing Manual, as directed and approved by the Government. After the unit has been initially set in place and checked for line and grade, it shall be removed and any defects in its bearing area shall be corrected by trimming and by placing and compacting similarly moistened structure backfill. The process of removal, correction, and replacement shall continue until the imprint of the unit on the bearing area indicates essentially uniform contact, and the unit is in reasonable conformity with the lines and grades shown on the project plans.

Where a structure is located within a paved area, all backfill material above finished subgrade elevation shall conform to the requirements of the typical pavement section of the same elevations.

Backfill compacted by pneumatic or mechanical tamping devices shall be placed in layers not more than 8 in. in depth before compaction.

Backfill material placed as a slurry shall be placed in uniform layers not exceeding 4 ft. in depth.

The maximum water content of the slurry mixture shall be 40 gallons of water per ton of backfill material. Aggregate slurry shall be thoroughly mixed in a mixer approved by the Government.

Unless otherwise approved by the Government, the slurry shall be compacted with internal vibrators in accordance with the requirements of Section “Concrete Structures”.

12. Compaction of Backfill

Backfill material shall be compacted to at least 95 percent of the maximum density as determined in accordance with the requirements of the applicable test methods of the Caltrans Materials Testing Manual, as directed and approved by the Government.

Backfill material may be compacted by either mechanical or pneumatic tamping devices or backfill material may be placed as a slurry. Compaction equipment or methods which may cause excessive displacement shall not be used.

If backfill is placed as a slurry, and when directed by the Government, the contractor shall excavate holes in the compacted slurry to the depths and at the locations designated by the Government. Upon completion of the tests, the contractor shall refill the excavated areas and compact the material to the required density in a manner approved by the CO/COR.

13. Compaction

Each layer of the embankment material shall be compacted by rolling, tamping, or other suitable means to the specified density before the next layer is placed. Effective spreading equipment shall be used on each layer to obtain uniform thickness prior to compacting. As the compaction of each layer progresses, continuous leveling and manipulation of the material shall be required to assure uniform density. The moisture content of the material shall be adjusted, if necessary, to obtain the required density. As far as practicable, construction equipment shall be continuously routed uniformly over the entire surface of each layer.

Where embankments 5 ft. or less in height are to be constructed, the top 6 in. of the ground on which the embankment material is to be placed shall be compacted to a density of not less than 95 percent of the maximum density per ASTM D 1557-07.

Each layer of roadbed embankment shall be compacted to a density of not less than 95 percent of the maximum density, except that when asphaltic concrete is to be placed directly on subgrade, the top 6 in. of the embankment shall be compacted to a density of not less than 100 percent of the maximum density. Embankment material placed in dikes shall be compacted to a density of not less than 95 percent of the maximum density per ASTM D 1557-07.

All density determinations will be made in accordance with the requirements of the applicable test methods of per the applicable state in accordance with Caltrans, ADOT, or NDOT Materials Testing Manual, or as directed and approved by the Government.

14. Guardrail

The work under this section shall consist of furnishing all materials and constructing new guardrail, reconstructing existing guardrail, or constructing guardrail from salvage, all at the locations shown on the project plans and in accordance with the details shown on the plans and the requirements of these specifications.

This item shall also include all the work and materials to install and delineate guardrail terminals, including all necessary components and markings, installed new, reconstructed, or constructed from salvage in accordance with the details shown on the plans and as herein specified.

Materials for guardrail shall conform to the requirements of Caltrans standard Specifications.

Prismatic guardrail reflector tabs and prismatic guard-rail-mounted barrier markers shall conform to the requirements of Caltrans Standard Specifications – Materials. The body of the prismatic guardrail reflector tabs shall have a minimum thickness of 3/16 in., and be either galvanized steel or ultraviolet-resistant plastic. Prismatic reflectors shall be 3-1/4 in. in diameter, and shall be secured to the body in accordance with the manufacturer’s recommendations. Prismatic guard-rail-mounted barrier markers shall be ultraviolet-resistant, and shall have a trapezoidal-shaped body in accordance with Caltrans Standards.

Post-mounted L-shaped barrier markers, and flexible guardrail markers shall be made of a high quality, impact and ultraviolet resistant, flexible, white-colored plastic or similar material with a minimum thickness of 3/16 in. This material shall be configured into a rectangular body that is flat, curvilinear, or tubular with a width between 3 and 4 in. The minimum reflective area for

L-shaped post-mounted barrier markers shall be 10 square in. The reflectorized surface for flexible guardrail markers shall be 3 in. wide by 5 in. long.

Adhesive materials for applying reflective sheeting to guardrail terminals, post-mounted L-shaped barrier markers, metal or plastic guardrail reflector tabs, and flexible guardrail markers shall be in accordance with the sheeting manufacturer's recommendations.

Guardrail delineator material shall be specifically manufactured to provide roadside delineation.

All delineators shall consist of complete units that are precut, pre-drilled as applicable, and ready to be installed in the field. The delineators shall be packaged in such manner as to prevent damage and deterioration during shipping and storage.

Reflective sheeting for guardrail terminals, and for guardrail delineation shall consist of a retro-reflective system having a smooth outer surface and conforming to all criteria in AASHTO M 268 for the applicable sheeting type, including class, color, specific intensity per unit area, color processing, adhesive, and artificial weathering. Reflective sheeting used on post-mounted L-shaped barrier markers, on guardrail reflector tabs, and on post-mounted guardrail reflectors shall be sheeting Type IV, V, or VI.

Transparent colors, inks, and paints used in object marker fabrication shall be of the type and quality recommended by the sheeting manufacturer. Transparent colors shall be applied with screen mesh P.E. 157 using fill pass.

Flexible guardrail markers, reflective sheeting products and inks approved for use are shown on the Caltrans Approved Products List. Copies of the most current version of the Approved Products List must be submitted for approval by the government.

Construction Requirements The construction of the various types of guardrail shall include the assembly and erection of all component parts complete at the locations shown on the project plans or as directed by the Government. All materials shall be new except as provided for under Section “Guardrail”.

The various types of guardrail shall be constructed with either steel posts and steel blocks or wood posts and wood blocks, at the option of the contractor, except where the post materials to be used are specified on the plans. The same type of post shall be used in any one continuous length of guardrail.

All metal work shall be fabricated in the shop. No punching, drilling, cutting, or welding shall be done in the field, except as provided for under Section “Guardrail”. All metal cut in the field shall be cleaned and painted with two coats of zinc paint, in accordance with Caltrans Standard Specifications – Materials.

Where field cutting or boring of wood posts and blocks is permitted, the affected areas shall be thoroughly swabbed with at least two applications of the same type of wood preservative as initially used.

Where wood posts with rectangular sections are used, the posts shall be set so that the longest dimension is perpendicular to the rail.

Where a post is to be set in concrete, the concrete shall be placed against undisturbed material in the excavated hole. Before the post is set in the hole, a ½ in. thickness of polystyrene material shall be placed to cover all sides and corners of the embedded portion of the post for the full depth of the concrete. The polystyrene material shall not be nailed or clipped to the post, but shall be held against the post in a manner approved by the COR.

All bolts shall extend beyond the nuts a minimum of two threads, except that all bolts on posts adjacent to pedestrian traffic shall be cut off flush to the nut.

Bolts extending more than 2 in. beyond the nut shall be cut off less than 1/2 in. beyond the nut.

Unless otherwise shown on the plans, bolts shall be torqued as follows:

Table 23 Bolt Diameter: in. Torque: Ft. – Pounds

5/8 45 - 50 3/4 70 - 75

7/8 and larger 120 - 125

All bolts, other than those specified to be torqued, shall be securely tightened.

Guardrail elements shall be spliced by lapping in the direction of traffic in the nearest adjacent lane.

All guardrail delineation shall be installed in accordance with the manufacturer’s recommendations and as specified herein.

Within the transition section of each guardrail terminal unit installed at average elevations under 4,000 ft., prismatic guardrail-mounted barrier markers shall be attached on posts as specified on the drawings. Post numbering within the transition shall be as shown in the approved manufacturer’s drawings. The prismatic barrier markers shall be mounted to the guardrail W-beam.

For all guardrail not included in guardrail terminals, guardrail reflector tabs shall be installed on the W-beam at every sixth post. On radial sections of guardrail, the reflector tabs shall be placed on the W beam at every other post. The slotted part of the tab shall be installed under the mounting bolt head so that the reflectorized surface of the tab faces oncoming traffic. The exposed ends of the slotted part of the tab shall be bent up against and then over the top of the bolt head.

In addition to the guardrail reflector tabs, flexible guardrail markers shall also be installed for guardrail not included in the transition sections when the average project elevation, as shown on the plans, is greater than 4,000 ft. Flexible guardrail markers shall be installed on every 18th guardrail post beginning with the post number. The reflector body shall be of sufficient length so that the mounting height of the top of the reflective sheeting shall be approximately 38 in.

above the surface of the adjacent roadway, and shall be placed as close as possible to the roadway edge on the front of the guardrail post facing adjacent oncoming traffic. Guardrail reflectors shall be attached to metal guardrail posts with a minimum of 2½ in. bolts with washers. For metal guardrail posts, two holes shall be drilled through the post to mount the reflectors. The bolt shall be secured to the metal post with a washer and two nuts. For wood posts, the lag bolts shall be a minimum length of 2 in. All post-mounted reflectors shall be mounted level and true.

The color of the reflective portion of the barrier markers and flexible guardrail markers shall conform to the color of the adjacent edge line. Silver-faced reflector tabs shall be installed on the right hand side of all roadways, and yellow-faced tabs shall be installed on the left-hand side of one-way roadways and ramps.

Field application of reflective sheeting on the post-mounted L-shaped barrier markers, guardrail reflector tabs and the flexible guardrail markers will not be allowed. All sheeting shall be applied in the factory by the manufacturer. If the sheeting has been damaged in any way, the contractor shall furnish and install a new marker at no additional cost to the Government.

When guardrail is being constructed, or reconstructed under traffic, the contractor shall conduct its operations so as to constitute the least hazard to the public. All guardrail work shall be performed in the direction of traffic flow. Traffic control shall be provided in accordance with the requirements of Section “Maintenance and Protection of Traffic”.

Roadway Guardrail Guardrail posts shall be set to the line and grade established by the Contractor in the field and approved by the Government.

Wood and steel Steel posts shall either be driven, or placed in manually or mechanically dug holes; however, driven posts will not be permitted at locations where damage to the curb, gutter, sidewalk, buried items, shoulders or pavement might occur. The Government will be the sole judge as to whether driving of posts will be allowed. Driving of posts shall be accomplished in a manner which will prevent battering, burring, separation of the galvanizing from the steel or distortion of the post. Any post which is bent or otherwise damaged to the extent it is unfit for use in the finished work, shall be removed, and replaced at no additional cost to the Government.

Pre-punched pilot holes may be required where wood posts are driven. Pilot holes will not be required where steel posts are driven.

Where pavement is disturbed in the construction of guardrail, the damaged surfacing shall be repaired as approved by the Government. Where the top surface of a box culvert is at an elevation which would interfere with full depth post placement, the post shall be placed and anchored. Where the top surface of a culvert or other item is at an elevation which would interfere with full depth post placement, the post shall be eliminated and nested steel W-beam shall be placed in accordance with the requirements in Section “Guardrail”.

Except where a concrete foundation for a post is required, the space around and under the posts placed in manually or mechanically dug holes shall be backfilled with moist soils placed in compacted lifts as approved by the Government.

Wood blocks shall be toenailed to the wood post with one 16-penny galvanized nail on each side of the top of the block. Wood or steel Steel blocks shall be set so that the top of the block is no more than 1/2 in. above or below the top of the post, unless otherwise shown on the project plans.

Rail elements shall be spliced at 25 ft. intervals or less. Rail elements shall be spliced at posts unless otherwise shown on the project plans. Where steel posts and blocks are used, backup plates shall be installed at each post, except at posts where splices are made. Rail elements at joints shall have full bearing. When the radius of curvature is 150 ft. or less, the rail elements shall be shop curved.

Guardrail End Terminal Assemblies Installation of guardrail end terminal assemblies shall be as shown on the plans, except that the foundation tubes shall conform to American Road and Transportation Builders Association (ARTBA) PTE-05, and shall be 78 in. in length.

Foundation tubes shall be installed with an approved driving head. The tubes shall not be driven with the wood post in place. If approved by the Government, foundation tubes may also be installed in drilled holes. When foundation tubes are placed in drilled holes, the space around and under the tubes shall be backfilled with moist soils placed in compacted lifts, as approved by the Government. The foundation tube shall not protrude more than 4 in. above the ground as measured along a 5 ft. cord.

Bolted Guardrail Anchors Bolted guardrail anchors shall consist of bolting two steel brackets to the shortened post and to the box culvert roof, as shown on the plans.

Where the elevation of the top surface of a concrete box culvert or other similar installation prevents the placement of a post of the specified length, the posts shall be shortened and anchored in accordance with the details shown on the plans.

Guardrail Transitions Guardrail transitions to concrete barriers shall be constructed in accordance with the details shown on the plans.

Guardrail Terminals Installation of guardrail terminals shall be as shown on the plans and or as specified in the approved manufacturer's drawings submitted by the Contractor. Guardrail terminals shall be either tangent-type ,or flare-type, or for curved road areas SRT-350 or as recommended in Caltrans Standard Specifications .as shown on the plans.

15. Traffic Control

Traffic control must be provided by the contractor to meet the requirements of the Federal Highway Administration, Department of Transportation’s 2009 Manual on Uniform Traffic Control Devices (MUTCD) and all state, city or county regulation for Traffic Control.

Not later than 14 days prior to beginning of any construction work on any task order, the contractor shall submit a Traffic Control Plan to the Government for review and approval. The submitted plan shall comply with all federal, state, and local requirements and shall be prepared by a registered professional engineer from the state where the work is occurring.

Traffic flow maintenance and construction operations shall be designed to minimize obstructions and inconvenience to the public.

An unobstructed, smooth, and dustless passageway shall be constructed to allow for proper traffic operations through construction operations.

Roads that are closed to traffic shall be protected with effective barricades and warning signs.

Barricades and obstructions shall be illuminated from sunset to sunrise.

Traffic control devices shall be removed when no longer in use.

Maintenance and Protection of Traffic The work under this section shall consist of providing flagging services and pilot trucks, and furnishing, installing, maintaining, moving and removing barricades, warning signs, lights, Signals, cones, and other traffic control devices to provide safe and efficient passage through and/or around the work and to protect workers in or adjacent to the work zone. The work shall be done in accordance with the requirements of Part VI of the MUTCD and the associated Caltrans supplements. When referred to herein, these documents will be referred to as MUTCD and associated state specific supplements.

The requirements of the MUTCD and associated state specific Supplement shall be considered as the minimum standards for the protection of workers and the traveling public.

The traffic control and safety plan of the contractor, along with the contractor’s work schedule and actual operations, shall be such that no condition that is considered to be unsafe, in the opinion of the Government, shall exist. The traffic control plan shall assure that miscellaneous operations occurring throughout the work, as well as during the final stages, are adequately protected. As a result of effective planning and efficient scheduling of the type and quantity of work, the duration, degree, length, amount, size, etc., of any traffic restriction or lane closures shall be limited to that absolutely necessary to provide a safe condition for both traffic and construction personnel.

Flash Arrow Panels Flashing arrow panels shall conform to the requirements of Section 6F-3 of the MUTCD and associated state specific supplement with the following additions:

Each arrow panel shall have its own independent power source. The power source shall be capable of supplying adequate continuous power for the sign operation over extended periods of time. Fuel capacity shall be such as to provide for at least 12 hours of continuous operation without refueling. Panels may be solar powered with adequate energy source to provide for at least 12 hours of continuous operation without refueling or recharging.

Pavement Marking Paint Paint for temporary striping, arrows, symbols and legends shall be white or yellow and shall conform to the requirements for permanent striping paint as set forth in Section “Permanent Pavement Markings” of these specifications and as indicated on the project plans or as approved by the Government. Paint for temporary symbols and legends shall be white and shall meet the same requirements as temporary striping.

Temporary Sign Supports Temporary Sign Supports may be wood, steel, or aluminum, at the option of the contractor and shall be approved by the Government prior to installation. Wood posts shall be southern pine, Douglas fir, or other soft wood. Wood posts need not be treated. Embedded posts shall meet the criteria established under National Cooperative Highway Research Program (NCHRP) Report 350 for breakaway sign supports. Angle braces will not be allowed.

Delineators Delineators shall be as shown on the plans and shall be in conformance with one of the following Caltrans, or the RSHS.

Barricades Type I barricades with a minimum of 270 square in. of retro-reflective area facing traffic, and otherwise conforming to Section 6F-5(f) of the MUTCD, may be used in lieu of Type II barricades in freeway or other high speed applications, unless specifically excepted in the project plans.

All sheeting for barricades shall be a minimum of Type II sheeting, conforming to

AASHTO M 268.

Construction Requirements The contractor shall provide for the adequate protection of all vehicular and pedestrian traffic and workers through any portion of the work where construction operations interfere with, obstruct, or create a hazard to the movement of traffic.

At the pre-construction conference, the contractor shall provide the Government with the name of the contractor's employee who is responsible for implementing, monitoring, and altering, as necessary, the traffic control plan. The contractor’s designee shall be available at any time to respond to calls involving damage or displacement to barricades, lights, signs, and other devices resulting from vandalism, traffic accident or other causes.

If, at any time, the Government determines that sufficient traffic control is not being provided or maintained, the Government may order suspension of the work until the proper level of traffic control is achieved. In cases of serious or willful disregard for safety of the public or workers by the contractor, the Government may proceed to place the traffic control measures in proper condition and deduct the cost thereof from monies due or becoming due the contractor.

All contractor’s personnel, equipment, machinery, tools, and supplies shall be kept clear of active traffic lanes, except as necessary for the prosecution of the work. The contractor shall promptly remove any material or debris that is spilled or tracked onto the traveled roadway as a result of the prosecution of the work at no additional cost to the Government. Materials, vehicles, and parked equipment shall be kept as far from the traveled way as practical. The contractor shall not park equipment or store materials within 30 ft. of the edge of a traveled way unless an adequate barrier is present. Equipment may be parked and materials may be stored in the right-of-way only at locations approved by the Government.

Any devices provided under this section which are lost, stolen, destroyed or are deemed unacceptable by the Government, while their use is required on the project, shall be replaced by the contractor and, except as hereinafter specified for temporary impact attenuators, at no additional cost to the Government. All such devices shall be replaced by the end of the work shift unless otherwise specified.

The Government shall be sole judge as to which signs may require embedded posts, portable stands or another type of support.

All traffic control devices necessary for the first stage of construction shall be properly placed and in operation before any construction is allowed to start. When work of a progressive nature is involved, such as resurfacing a roadway under traffic, the necessary devices shall be moved concurrently with the advancing operation. The use of temporary devices shall not be extended beyond the anticipated duration of one work shift's production.

All traffic control devices shall be kept clean and free from dirt, mud, and roadway grime.

Scratches, rips and tears in reflective sheeting shall be promptly corrected by the contractor, as approved by the Government.

Temporary pavement markings shall be applied in conjunction with changes in the traffic pattern. Placement of new pavement markings and removal of old markings shall be done immediately when the need for each arises. Temporary markings and devices shall be removed and new roadway marking shall be completed within 24 hours after any changes in traffic pattern unless otherwise directed by the Government. Obliteration of the temporary pavement markings shall be in conformance with Section “Maintenance and Protection of Traffic” of these specifications.

Types of barricades, supports or devices not specifically described in the MUTCD and Associated Caltrans, or RSHS supplement, but which would cause a hazard to traffic if used by the contractor, will not be permitted in the work area. The methods used by a contractor to control traffic when there are no details included in the contract, shall produce a safe condition for travel to the maximum extent possible at all times.

Sign Sheetings All sign sheeting shall be Type II sign sheeting, conforming to AASHTO M 268, unless otherwise shown on the project plans.

Temporary Removal or Covering of Signs Where existing signs are not applicable during construction, they shall be removed or have the affected legends covered in place. Unless otherwise stated in the plans, or if a discrepancy exists, the Government will approve the method or methods to be used.

Removed signs shall be properly shipped, stored, and handled in accordance with the manufacturer’s recommendations and in a manner approved by the COR to assure that such signs will continue to be suitable upon reinstallation.

Where temporary removal of a sign or legend is not practical, the sign face may be covered with an opaque porous cloth or fiber material, folded over the sign edges, and secured at the rear of the sign in such a manner that the sign shall not be damaged.

Tape, hardware, ropes, cables, etc., used to secure the covering material shall not touch, place any pressure on, or damage the sign face.

The covering shall be maintained by the contractor until the COR directs reactivation of the sign by removal of the coverings or the contract ends.

The contractor shall restore the signs and legends to their previous conditions, as directed by the Government. The contractor shall repair any damage to the signs or shall replace the damaged signs, as directed by the COR when damage is the result of the contractor’s operations.

Temporary Sign Supports: Temporary Sign supports installed in the ground shall be removed at the completion of the project, the post holes filled and compacted, and the immediate area restored to match the surrounding area.

Safety and Health The contractor shall develop and submit a health and safety plan (HASP) written and implemented for the proposed demolition operation. The proposed HASP shall be submitted and approved per the requirements of Table 24 – List of Submittals under the “Deliverables” Section.

The program shall identify, evaluate, and control safety and health hazards for the demolition operation. The contractor’s submitted HASP shall be reviewed and approved by the COR, and approved by the appropriate State agencies prior to the start of any onsite work. All site workers shall be familiar with the HASP and shall be given training on its contents. The contractor shall document all training of all site workers in the HASP plan. Standards of approval will be determined by compliance with all OSHA regulations.

The contractor shall be cognizant of and ensure compliance with all requirements of RSHS, OSHA, and general industry safety regulations. Such responsibilities shall apply to the contractor’s operation as well as any subcontractor operations. When safety or health violations are called to the contractor’s attention by the CO or authorized representative, the contractor shall immediately correct the condition. Such notice, either orally or in writing, when served on the contractor or the contractor’s designated on-site representative shall be deemed sufficient.

Oral notices will…