Table of Contents and Supplemental Specifications.pdf

TABLE OF CONTENTS

101 - Terms, Format, and Definitions……………………………………………………………………..4

101.01 Meaning of Terms………………………………………………………………………….4

101.03 Abbreviations………………………………………………………………………………4

101.04 Definitions………………………………………………………………………………….4

102 - Bid, Award, and Execution of Contract…………………………………………………………….7

102 Bid, Award, and Execution of Contract……………………………………………………….7

103 - Scope of Work………………………………………………………………………………………8

Deletions……………………………………………………………………………………………8

104 - Control of Work……………………………………………………………………………………..9

Deletions……………………………………………………………………………………………9

104.06 Use of Roads by Contractor………………………………………………………………..9

105 - Control of Material………………………………………………………………………………...10

105.02 Material Sources…………………………………………………………………………..10

105.02(a) Government-provided sources…………………………………………………………10

105.05 Use of Material Found in the Work……………………………………………………….10

106 - Acceptance of Work……………………………………………………………………………….11

106.07 Delete……………………………………………………………………………………...11

107 - Legal Relations and Responsibility to the Public………………………………………………….12

107.05 Responsibility for Damage Claims………………………………………………………..12

107.06 Contractor’s Responsibility for Work…………………………………………………….12

107.09 Legal Relationship of the Parties………………………………………………………….12

107.10 Environmental Protection…………………………………………………………………12

108 - Prosecution and Progress…………………………………………………………………………..14

108 Delete…………………………………………………………………………………………14

109 - Measurement and Payment………………………………………………………………………...15

109 Deletions……………………………………………………………………………………...15

109.02 Measurement Terms and Definitions……………………………………………………..15

152 - Construction Survey and Staking………………………………………………………………….16

155 - Schedules for Construction Contracts……………………………………………………………..18

155 Delete…………………………………………………………………………………………18

156 - Public Traffic………………………………………………………………………………………19

157 - Temporary Sediment and Erosion Control………………………………………………………...21

171 - Weed and Disease Prevention……………………………………………………………………..25

208 - Structure Excavation and Foundation Backfill…………………………………………………….27

718 - Traffic Signing and Marking Material……………………………………………………………..31

718.05 Aluminum Panels…………………………………………………………………………31

PREFACE

Preface_wo_03_15_2004_m

Delete all but the first paragraph and add the following:

The Forest Service, US Department of Agriculture has adopted FP-03 for construction of National Forest System Roads.

101 - TERMS, FORMAT, AND DEFINITIONS

101.00_nat_us_07_25_2005

101.01_nat_us_01_22_2009

101.01 Meaning of Terms

Delete all references to the TAR (Transportation Acquisition Regulations) in the specifications.

101.03_nat_us_06_16_2006

101.03 Abbreviations.

Add the following to (a) Acronyms:

AFPA

MSHA

NIST

NESC

WCLIB

American Forest and Paper Association Mine Safety and Health Administration National Institute of Standards and Technology National Electrical Safety Code West Coast Lumber Inspection Bureau

Add the following to (b) SI symbols:

mp Milepost ppm Part Per Million

101.04_nat_us_03_29_2007

101.04 Definitions.

Delete the following definitions and substitute the following:

Bid Schedule--The Schedule of Items.

Bridge--No definition.

Contractor--The individual or legal entity contracting with the Government for performance of prescribed work. In a timber sale contract, the contractor is the “purchaser”.

Culvert--No definition.

Right-of-Way--A general term denoting (1) the privilege to pass over land in some particular line (including easement, lease, permit, or license to occupy, use, or traverse public or private lands), or (2) Real property necessary for the project, including roadway, buffer areas, access, and drainage areas.

Add the following:

Adjustment in Contract Price--“Equitable adjustment,” as used in the Federal Acquisition Regulations, or “construction cost adjustment,” as used in the Timber Sale Contract, as applicable.

Change--“Change” means “change order” as used in the Federal Acquisition Regulations, or “design change” as used in the Timber Sale Contract.

http://www.nist.gov/

Design Quantity--“Design quantity” is a Forest Service method of measurement from the FS-96 Forest Service Specifications for the Construction of Roads and Bridges. Under these FP specifications this term is replaced by the term “Contract Quantities”.

Forest Service--The United States of America, acting through the Forest Service, U.S.

Department of Agriculture.

Neat Line--A line defining the proposed or specified limits of an excavation or structure.

Pioneer Road--Temporary construction access built along the route of the project.

Purchaser--The individual, partnership, joint venture, or corporation contracting with the Government under the terms of a Timber Sale Contract and acting independently or through agents, employees, or subcontractors.

Protected Streamcourse--A drainage shown on the plans or timber sale area map that requires designated mitigation measures.

Road Order--An order affecting and controlling traffic on roads under Forest Service jurisdiction. Road Orders are issued by a designated Forest Officer under the authorities of 36 CFR, part 260.

Schedule of Items--A schedule in the contract that contains a listing and description of construction items, quantities, units of measure, unit price, and amount.

Utilization Standards--The minimum size and percent soundness of trees described in the specifications to determine merchantable timber.

Add Figure 101-1—Illustration of road structure terms:

Figure 101-1—Illustration of road structure terms.

102 - BID, AWARD, AND EXECUTION OF CONTRACT

102.00_nat_us_02_16_2005

102 Bid, Award, and Execution of Contract

Delete Section 102 in its entirety.

103 - SCOPE OF WORK

103.00_nat_us_02_16_2005

Deletions

Delete all but subsection 103.01 Intent of Contract.

104 - CONTROL OF WORK

104.00_nat_us_06_16_2006

Deletions

Delete Sections 104.01, 104.02, and 104.04.

104.06_nat_us_02_17_2005 Add the following subsection:

104.06 Use of Roads by Contractor

The Contractor is authorized to use roads under the jurisdiction of the Forest Service for all activities necessary to complete this contract, subject to the limitations and authorizations designated in the Road Order(s) or described in the contract, when such use will not damage the roads or national forest resources, and when traffic can be accommodated safely.

105 - CONTROL OF MATERIAL

105.02_nat_us_01_18_2007

105.02 Material Sources.

105.02(a) Government-provided sources.

Add the following:

Comply with the requirements of 30 CFR 56, subparts B and H. Use all suitable material for aggregate regardless of size unless otherwise designated. When required, re-establish vegetation in disturbed areas according to section 625.

105.05_nat_us_05_12_2004

105.05 Use of Material Found in the Work.

Delete 105.05 (a) and (b) and the last sentence of the second paragraph and substitute the following:

Materials produced or processed from Government lands in excess of the quantities required for performance of this contract are the property of the Government. The Government is not obligated to make reimbursement for the cost of producing these materials.

106 - ACCEPTANCE OF WORK

106.07_nat_us_05_11_2004

106.07 Delete

Delete subsection 106.07.

107 - LEGAL RELATIONS AND RESPONSIBILITY TO THE PUBLIC

107.05_nat_us_05_11_2004

107.05 Responsibility for Damage Claims.

Delete the entire subsection.

107.06_nat_us_06_16_2006

107.06 Contractor’s Responsibility for Work.

Delete the following from the first paragraph.

“except as provided in Subsection 106.07”.

107.09_nat_us_06_16_2006

107.09 Legal Relationship of the Parties.

Delete the entire subsection.

107.10_nat_us_06_16_2006

107.10 Environmental Protection.

Add the following:

Design and locate equipment repair shops, stationary refueling sites, or other facilities to minimize the potential and impacts of hazardous material spills on Government land.

Before beginning any work, submit a Hazardous Spill Plan. List actions to be taken in the event of a spill. Incorporate preventive measures to be taken, such as the location of mobile refueling facilities, storage and handling of hazardous materials, and similar information. Immediately notify the CO of all hazardous material spills. Provide a written narrative report form no later than 24 hours after the initial report and include the following:

• Description of the item spilled (including identity, quantity, manifest number, and other identifying information).

• Whether amount spilled is EPA or state reportable, and if so whether it was reported, and to whom.

• Exact time and location of spill including a description of the area involved.

• Containment procedures.

• Summary of any communications the Contractor had with news media, Federal, state and local regulatory agencies and officials, or Forest Service officials.

• Description of clean-up procedures employed or to be employed at the site including final disposition and disposal location of spill residue.

When available provide copies of all spill related clean up and closure documentation and correspondence from regulatory agencies.

The Contractor is solely responsible for all spills or leaks that occur during the performance of this contract. Clean up spills or leaks to the satisfaction of the CO and in a manner that complies with Federal, state, and local laws and regulations.

108 - PROSECUTION AND PROGRESS

108.00_nat_us_02_16_2005

108 Delete.

Delete Section 108 in its entirety.

109 - MEASUREMENT AND PAYMENT

109.00_nat_us_02_17_2005

109 Deletions

Delete the following entire subsections:

109.06 Pricing of Adjustments.

109.07 Eliminated Work.

109.08 Progress Payments.

109.09 Final Payment.

109.02_nat_us_06_16_2006

109.02 Measurement Terms and Definitions.

(b) Contract quantity.

Add the following:

Contract quantities will be adjusted only when there are errors in the original design of 15% or more.

Change the following:

“(b) Cubic yard” to “(c) Cubic yard”.

Add the following definition:

(p) Thousand Board Feet (Mbf). 1,000 board feet based on nominal widths, thickness, and extreme usable length of each piece of lumber or timber actually incorporated in the job. For glued laminated timber, 1,000 board feet based on actual width, thickness, and length of each piece actually incorporated in the job.

152 - CONSTRUCTION SURVEY AND STAKING

For use with Jefferson Creek Bridge

Foundation Scour Repair ONLY 7/11/2012 Delete Section 152 in its entirety and replace with the following:

Description

152.01 This work consists of furnishing qualified personnel and necessary equipment to survey the extent of existing scour below the west footing seal at Pier 2 of Jefferson Bridge, located on the Olympic National Forest. The survey limits should reference the center of the existing pier footings as reference points (elevation, approximate coordinates) and include enough area to map the foundation repair subsurface plus approximate areas just upstream and downstream where future scour protection may be needed.

Furnish personnel, equipment, and material conforming to the following:

(a) Personnel. Furnish personnel capable of performing an in-water or limited access/confined space survey in timely and accurate manner and recording information from the survey.

Precision of the survey is to 0.25 feet (3 inches).

(b) Equipment. Furnish a probing or survey rod at least 10 feet long, marked to tenths of a foot or inches. The probing rod should be sufficiently stiff to use in water without bending but should also be light enough to maneuver in water to accurately reach the extents of scour under the footing seal. A collapsible rod may facilitate making shorter measurements, wherever possible, while improving maneuverability.

(c) Material. Staking and/or marking are not required other than reference measurements (x,y,z) to the existing pier footings. Document (Plot) survey information on graph paper or an electronic format that allows for review by the Contracting Officer (CO) prior to proceeding with repair work. In lieu of a contractor-generated drawing, a marked up copy of Government-furnished property, Section J.1, Exhibit c., “Scour Mapping (Snorkel Inspection 09/23/2010)” may be provided.

Construction Requirements

152.02 General. Include survey activities in the construction schedule submitted according to Section 155. Include the date and sequence of the survey.

Prepare field notes in an approved format. All field notes and supporting documentation become the property of the Government upon completion of the work.

Start work only after survey for the affected work is accepted.

152.03 Survey and Requirements. Perform all survey, recording of data, and calculations as necessary to construct the project from the initial layout to final completion. Precision of the survey is 0.25 feet (3 inches).

152.04 Acceptance. Construction survey will be evaluated under Subsections 106.02 and 106.04.

Allow the Government a maximum of 1 day to approve the scour survey prior to beginning excavation work.

Measurement

152.05 Measure the Section 152 items listed in the bid schedule according to Subsection 109.02 and the following as applicable.

Payment

152.06 The accepted quantities, as provided above, will be paid at the contract price per unit of measurement for the Section 152 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

Payment for lump sum items will be prorated based on the total work completed.

155 - SCHEDULES FOR CONSTRUCTION CONTRACTS

155.00_nat_us_05_11_2004

155 Delete.

Delete Section 155 in its entirety.

156 - PUBLIC TRAFFIC

Foundation Scour Repair ONLY 08/22/2012 Delete Section 156 in its entirety and replace with the following:

156.01 This work consists of controlling and protecting public traffic adjacent to and within the project. This work also includes development of a work schedule and 10 days prior notification to the Government of intent to mobilize to the site to ensure the Government has sufficient time to re-open the road for construction access and provide a Government-furnished Type 3 barricade.

Material

156.02 Conform to the MUTCD and the following Sections and Subsections:

Construction sign panels 633

Retro-reflective sheeting 718.01

Temporary traffic control devices 718.22

156.03 General. Unless otherwise provided for in Table 156-1, keep existing roads open to all traffic during construction.

Maintain Government-furnished temporary traffic control devices in conformance with MUTCD.

All devices will be in place and approved prior to beginning work on project and are required to be maintained daily and at the conclusion of the contract.

156.04 Temporary Traffic Control. Maintain Government-furnished temporary traffic control devices adjacent to and within the project. Maintain traffic control devices as follows:

(a) Ensure traffic control devices are in place before the start of construction operations.

(b) Relocate temporary traffic control devices as necessary to allow construction vehicle access. Reset temporary traffic control devices to prevent public access

(c) Remove devices that no longer apply to the existing conditions.

(d) Immediately notify the CO of any device that is lost, stolen, destroyed, or inoperative.

(e) Keep temporary traffic control devices clean.

(f) Ensure all temporary traffic control devices are still in place upon contract completion, and notify the CO when the construction site is vacated.

156.05 Temporary Closures. Road segments may be closed as shown in Table 156-1. Maintain traffic control devices during closure period(s).

Table 156-1 Temporary Road Closures

Road From To Maximum Minimum

Number Terminus Terminus Consecutive Days of Closure

Consecutive Days Open

2480 6.10 6.30 Duration of Contract

Construction Access only

156.06 Acceptance. Public traffic work will be evaluated under Subsection 106.02.

Measurement and Payment

156.07 Do not measure Public Traffic work for payment. Include all costs associated with Section 156 Public Traffic in the unit price for Section 151-Mobilization.

157 - TEMPORARY SEDIMENT AND EROSION CONTROL

Foundation Scour Repair ONLY 08/22/2012 Delete Section 157 in its entirety and replace with the following:

157.01 This work consists of furnishing, constructing, and maintaining temporary sediment and erosion control measures. This includes protection of all phases of work during the life of the contract including storm events and removal of measures on completion of construction unless materials are a permanent part of the construction repair.

157.02 Furnish a material list and material specifications as part of the contractor technical proposal.

Construction Requirements

157.03 General.

10 days prior to the start of construction, submit a written Sediment and Erosion control plan that provides specific sediment and erosion control measures to minimize delivery of soil and turbidity into the stream during the construction period, including a partial channel diversion, temporary cofferdam construction, and site dewatering plan if the proposed repair requires dewatering of the construction site. Provide a plan that supports needed work in accordance with a contractor technical proposal that conforms to section 208. Include the sequence of operations and information on equipment, materials and suppliers to support temporary sediment and erosion control measures. The Sediment and Erosion Control Plan can be included in the technical proposal providing it is clearly identified as such. Once the plan or the technical proposal is approved by the CO, measures may be revised only with written approval by the CO.

Propose a plan that ensures that turbidity of the water 300 feet downstream from the construction site will not be visually greater than the turbidity of the water upstream of the project site.

When this turbidity requirement or other sediment and erosion control measures are not met, immediately take corrective action. Cease operations that are causing turbidity and pump or otherwise improve the diversion of the stream around the construction site according to this specification until the turbidity requirement can be met. When the interpretation of this requirement is in question, measure turbidity using a turbidity meter as approved by the CO, and provide documentation that operations are in compliance with FAR 52.236-7 Permits and Responsibilities, subsection 107.01 Laws to be Observed and subsection 107.10 Environmental Protection, and subsection 107.11, including but not limited to, the requirements of the National Marine Fisheries Service.

Do not begin work until the necessary controls for that particular phase of work have been implemented. Minimize the time required for sediment and erosion control features to be in place.

Operate in a manner that will avoid harm to aquatic organisms whenever possible.

Notify the CO of the intention to dewater the construction site, if required as part of the technical proposal, at least 10 days in advance. Do not divert stream flow to isolate and minimize flows in the construction site until approved by the CO. The CO will not approve a diversion until a fisheries biologist and other Government personnel are present and prepared to rescue aquatic organisms. Re-direct stream flows slowly and incrementally in order to facilitate the fish rescue.

The rescue operation will generally take several hours.

157.04 Controls and Limitations on Work.

Prior to construction, the CO will delineate critical riparian vegetation areas, wetlands, and other sensitive sites to prevent ground disturbance. Minimize disturbance to existing vegetation along stream.

Confine work within the construction limits marked by the Contracting Officer. Use existing roadways or travel paths whenever reasonable. Minimize the number of new access paths.

Dispose of waste material or contaminated water at approved sites.

For excavation or channel disturbing activities within the stream, use sediment control barriers or turbidity curtains at the downstream side of the excavation if turbidity levels specified in 157.03 are exceeded.

157.05 Filter Barriers. Construct silt fences and wattles, as needed, for filtering sediment from wastewater before wastewater re-enters the stream. Provide materials from a certified noxious weed free source.

157.06 Sediment Retention Structures. Construct sediment retention structures to detain wastewater pumped from the construction site and settle out sediment. Provide outlet protection.

157.07 Diversions.

Construct stream diversion, related appurtenances and measures as follows:

(a) In Stream Work.

1. Isolate construction area and coordinate with Contracting Officer for aquatic species removal by the Government. Coordinate aquatic species removal a minimum of 7 working days prior to beginning isolation of construction areas.

2. Cease project operations under high flow conditions that inundate the project area, except for efforts to avoid or minimize resource damage.

3. When approved, minimize time in which heavy equipment is in stream channels, riparian areas, and wetlands. Operate heavy equipment in streams only when Contracting Officer determines that such actions are the only reasonable alternative for implementation, or would result in less sediment in the stream channel or damage (short- or long-term) to the overall aquatic and riparian ecosystem relative to other alternatives.

4. Clean and repair all equipment used in the in-stream work prior to entering the project area. Remove external oil and grease, along with dirt and mud, prior to construction. Inspect equipment daily for leaks or accumulations of grease, and repair any identified problems prior to entering streams or areas that drain directly to streams or wetlands.

5. Fuel and service equipment used for in-stream or riparian work in an approved staging area outside of riparian zone. When not in use, store vehicles in the staging area.

(b) Temporary cofferdam. When partial stream diversion and construction site de-watering is required, construct a cofferdam of material handling bags as approved by the CO. The mining of material from the streambed or floodplain to construct the cofferdam is not permitted. Minimize the size of the cofferdam and ensure the partial stream diversion allows for aquatic species passage in the main channel while preventing aquatic species from entering the construction site within the confines of the cofferdam.

Use only clean sand or coarse concrete aggregate in the material handling bags to form the cofferdam. Loosely fill and tamp the bags in place to minimize seepage between, under, and around the bags. Place an impermeable membrane within or on the upstream side of the cofferdam and entrench it in the streambed. Ensure that turbidity requirements specified in subsection 157.03 are not exceeded during cofferdam construction and use.

During construction and use of the cofferdam, and prior to removing the cofferdam, pump any contaminated or sediment-laden water from the enclosure to a sediment retention structure. Ensure water leaving the sediment retention structure is free of sediment and turbidity prior to re-entering the stream.

In lieu of a sediment retention structure, use natural vegetation to disperse the soil and filter the contaminated or sediment-laden water. Discharge water onto areas of ground most advantageous for dispersal and filtration of sediment, e.g. flat heavily vegetated soil. When single point discharge does not function adequately, discharge water into a perforated pipe or series of pipes laid approximately level so that the brown water disperses over a wide area.

157.08 Maintenance & Cleanup.

When removing sandbags, spread sand away from the waterway; if coarse concrete aggregate meeting the requirements of Subsection 703.02 is used in the sandbags, the gravel may be distributed evenly across the waterway as approved by the CO.

Remove geotextile and other non-biodegradable materials used in dewatering and sediment control operations from Government property, unless otherwise approved by the CO.

157.09 Acceptance. Material for sediment control measures will be evaluated under Subsections

106.02 and 106.03.

Construction, maintenance, and removal of sediment and erosion control measures will be evaluated under Subsections 106.02 and 106.04.

Measurement and Payment

157.10 Do not measure Sediment and Erosion Control for payment. Compensation is made as an indirect payment.

171 - WEED AND DISEASE PREVENTION

171.00_nat_us_03_30_2005

171.01 This work consists of washing and treating construction equipment to remove seeds, plants, and plant fragments from the equipment before the equipment is used on National Forest System lands.

171.02 Conform to the following Subsection:

Water 725.01

Construction Requirements

171.03 General . Notify the CO in writing at least 10 days before moving any construction equipment onto National Forest System lands. Construction equipment does not include cars, pickup trucks, and other vehicles that regularly travel between the construction site and areas outside of National Forest System lands.

Perform all work at a location designated on the plans or other locations approved in writing.

Provide the CO with an opportunity to monitor the washing and inspection.

171.04 Equipment. Use a high pressure washing system.

For work on National Forest System Lands, use a washing system that traps all wash water and either stores it for removal from National Forest System lands or recycles the water for continued use. If the equipment recycles the water, provide adequate filters for seed removal. Dispose of the filter material and removed seeds in an approved manner. Do not mix soaps, detergents, or other chemicals with the wash water.

For work at a commercial washing facility, use an approved facility.

171.05 Washing. Wash the sides, tops, and undercarriages of all construction equipment.

Remove all seeds, plants, plant fragments, dirt, and debris from the construction equipment.

171.06 Inspection. Inspect the washed construction equipment, including the undercarriage, to ensure that the washing removed the dirt, debris, and seeds from the construction equipment.

Rewash the construction equipment as necessary or as directed.

171.07 Acceptance. Weed prevention will be evaluated under Subsection 106.02.

Measurement

171.08 Do not measure weed prevention for payment.

Payment

171.09 Include all costs associated with the Section 171-Weed Prevention in the unit price for Section 151-Mobilization.

208 - STRUCTURE EXCAVATION AND FOUNDATION BACKFILL

Foundation Scour Repair ONLY 08/22//2012 Delete Section 208 in its entirety and replace with the following:

208.01 This work consists of a contractor developed and implemented technical proposal to perform excavation and foundation backfill work to re-establish foundation support for a bridge pier that has settled and may be subject to additional settlement due to scour below the pier. The pier is supported on two individual footings, which are further supported on a non-reinforced concrete seal footing. The entire pier and bridge have settled together. The work includes describing the proposed repair, including construction method, personnel, materials scheduling, and a safety plan; discussing the effectiveness of the proposed repair; identifying additional work at the site outside the scope of the proposal that would further protect the repair, such as placement of riprap; and demonstrating experience and effectiveness by identifying and describing past projects where similar work has been performed by the contractor making the technical proposal.

Incorporate the Construction Requirements in the subsections below in the technical proposal. This may include preserving and protecting active stream channels; in-stream excavation; preparing foundations; constructing cofferdams; dewatering; sealing foundations; backfilling with scour resistant materials; subsequent removal of safety features, sediment control features, and cofferdams; and other work required as part of the specific technical proposal.

Preferred construction methods and measures for the repair will include proposals that 1) do not require de-watering of the worksite, 2) do not allow any fresh concrete or grout to enter the active stream, 3) minimize the disturbance to the stream, and 4) minimize the amount of time the work will be performed in-stream. The technical merit of the proposals will be evaluated based on the effectiveness of the repair method, ability to incorporate preferred construction methods or show methods that exceed preferred options, as well as the experience of the contractor to perform the work being proposed.

Following Notice to Proceed, submit a Final Technical Repair Proposal to the CO a minimum of 10 days before beginning actual site work. As part of both the Request for Proposal as well as the Final Technical Repair Proposal, include a work schedule that outlines duration of construction, the planned mobilization schedule, and the duration of anticipated in-stream work.

Material

208.02 Furnish a material list and material specifications as part of the contractor technical proposal. For concrete or grout to be placed underwater or tremied into standing water as part of the backfill repair, include anti-washout admixture or discuss why it is not needed or recommended.

Construction Requirements

208.03 Preparation for Structure Excavation. Clear the area of obstructions according to Sections 201 and 203. Prepare the worksite to perform work by underwater methods with diver support or by work site isolation and dewatering in accordance with section 157. Survey and document the extent of the scour under the seal footing using hand measuring devices in accordance with section 152, prior to performing any excavation or the actual repair work.

208.04 General. Excavate loose non-compacted material from below the existing seal footing.

Ensure turbidity limits specified in 157.03 are not exceeded during excavation. When excavation is complete, request approval as to the character and suitability of the foundation material. Ensure the foundation surface will provide uniform support for the repair throughout its length and width, unless construction methods outlined in the technical proposal can accommodate inconsistencies while still meeting the overall intent of the proposed repair.

Follow OSHA safety regulations for all diving and construction activities, including working within a temporary cofferdam if that is part of the technical proposal.

Do not release non-native excavated material into the waterway. As much as possible, use excavated materials to fill any voids in the stream channel adjacent to the worksite, where the future installation of riprap may protect that placement. Dispose of any non-native material removed as part of the excavation off National Forest System lands.

Include provisions for performing work underwater in the technical proposal or propose de-watering the worksite as an alternative method.

208.05 Channel Preservation. Perform work in or next to a running waterway as follows:

(a) Propose work to be performed underwater using divers and underwater construction equipment and methods; or excavate inside cofferdams, sheeting, or other separations such as dikes or sandbags;

(b) Do not disturb the natural bed of the waterway adjacent to the work, except as allowed in subsection 208.04.

208.06 Cofferdams. If included in the technical proposal, use cofferdams when excavating under water or when the excavation is affected by groundwater.

Submit working drawings as part of the technical proposal showing proposed methods and construction details of temporary cofferdams according to Subsection 104.03 and Section 157.

Cofferdams shall:

(a) Extend below the bottom of the footing;

(b) Be braced to withstand pressure without buckling and secured in place to prevent tipping or movement;

(c) Be as watertight as practicable;

(d) Provide sufficient clearance for the placement of forms and the inspection of their exteriors;

(e) Provide for dewatering;

(f) Protect fresh concrete against damage from sudden rises in water elevation; and

(g) Prevent damage to the foundation by erosion.

When no longer required, remove all cofferdam material down to the natural bed of the waterway.

Remove cofferdam material outside the waterway to a minimum of 2 feet below the surface of the finished ground.

208.07 Foundation Seal. Where a foundation area cannot be pumped reasonably free of water, provide a foundation seal of seal concrete. Design seal concrete according to Subsection 552.03, including an anti-washout admixture as needed.

Furnish and place seal concrete according to Section 552. While placing a foundation seal, maintain the water level inside the cofferdam at the same level as the water outside the cofferdam.

Ensure that concrete is sufficiently cured or dried before coming into contact with stream flow.

Do not dewater a concrete-sealed cofferdam until the concrete strength is sufficient to withstand the hydrostatic pressure. Ensure that there is effective separation between the seal and the cofferdam so that the temporary cofferdam can be removed at the completion of construction without damaging the new concrete.

208.08 Dewatering. While placing concrete, locate and operate the pumps outside the foundation form. If pumping is permitted from the interior of any foundation enclosure, pump in a manner to avoid removal or disturbance of concrete material.

208.09 Foundation Preparation. Excavate unstable and unsuitable material below foundation grade. Specify the mechanism of excavation in the technical proposal. When preparing the technical proposal, estimate the extent of excavation needed to prepare the foundation. Once excavation and foundation preparation have been approved by the CO, document the extent of the required excavation as part of the as-built plans for the project.

208.10 Backfill. Backfill any material excavated as part of foundation preparation, as well as the void created by channel scour, with permanent materials such as concrete and/or steel. Submit a technical proposal with the materials to be used, the method of repair, personnel required, and the construction schedule. In addition to the technical merit and effectiveness of the repair, as discussed in the proposal, preferred construction methods and measures for the repair will include proposals that:

(a) do not require de-watering of the worksite

(b) do not allow any fresh concrete or grout to enter the stream

(c) minimize the disturbance to the stream

(d) minimize the amount of time the work will be performed in-stream

Minimum backfill limits are the neat lines of the seal of the west pier footing, as shown on the As- Built plans, Section J.1, Exhibit b. Maximum backfill limits are 6 feet beyond the neat lines of the seal of the west pier footing. For any material placed outside the neat lines of the footings, do not obstruct the natural channel flow.

As part of the technical proposal discuss how material placed outside the neat lines of the footings will act to provide long-term protection of the repair and the original footing. For any placement, either within the neat lines or outside the neat lines, recommend mitigation measures, such as riprap, that will provide for additional protection of the repair and the adjacent channel.

Recommend the sizing and extents or dimensions of any materials to be placed.

208.11 Acceptance.

Material to be used in the repair will be evaluated under Subsections 106.02 and 106.04.

Structure excavation and backfill work will be evaluated under Subsections 106.02 and 106.04.

Cofferdams will be evaluated under Subsections 106.02 and 106.04.

Clearing and removal of obstructions will be evaluated under Sections 201 and 203.

Seal concrete will be evaluated under Section 552.

Measurement

208.12 Measure the Section 208 items listed in the bid schedule according to Subsection 109.02 and the following.

Measure structural excavation by the cubic yard in its original position. Do not include the following volumes in structure excavation:

(a) Material excavated outside vertical planes located outside and parallel to the limits of the existing concrete seal;

(b) Water or other liquid material;

(d) Material excavated before measurements of the original ground; or

(e) Material rehandled in to fill voids in the adjacent channel.

Measure foundation fill based on the materials used in its construction.

Do not measure seal concrete used in the optional cofferdam construction.

Payment

208.13 The accepted quantities measured as provided in Subsection 109.02 and above, will be paid at the contract price per unit of measurement for the Section 208 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

718 - TRAFFIC SIGNING AND MARKING MATERIAL

718.05_nat_us_08_05_2009

718.05 Aluminum Panels

Delete the third paragraph and replace with the following:

Clean, degrease and properly prepare the panels according to methods recommended by the sheeting manufacturer. Conversion coatings will conform to ASTM B-921 or ASTM B-449.