specs.doc

AG-02NV-S-08-0021

Indian Creek Bridges

Forest Service Supplemental Specifications

To FP-03 Contents Preface

FSSS 101

Terms, Format, and Definitions

FSSS 102

Bids, Award, and Execution of Contract

FSSS 103

Scope of Work

FSSS 104

Control of Work

FSSS 105

Control of Material

FSSS 106

Acceptance of Work

FSSS 107

Legal Relations and Responsibility to the Public

FSSS 108

Prosecution and Progress

FSSS 109

Measurements and Payment

FSSS 151

Mobilization

FSSS 152

Construction Survey and Staking

FSSS 154

Contractor Sampling and Testing

FSSS 155

Schedules for Construction Contracts

FSSS 156

Public Traffic

FSSS 157

Soil Erosion Control

FSSS 158

Watering and Dust Control

FSSS 201

Clearing and Grubbing

FSSS 203

Removal of Structures and Obstructions

FSSS 204

Excavation and Embankment

FSSS 207

Earthwork Geotextiles

FSSS 208

Structure Excavation and Backfill for Selected Major Structures

FSSS 251

Riprap

FSSS 308

Minor Crushed Aggregate

FSSS 404

Minor Hot Asphalt Concrete

FSSS 625

Turf Establishment

FSSS 718

Traffic Signing and Marking Material

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_04_04_2007

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:

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.

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.

151 - Mobilization

151.01_0105_us_02_23_2005

151.01 Description

Add the following at the end of the last sentence:

“Work also includes cleaning of all equipment used at the project site. Clean all construction equipment off National Forest land prior to entry on the project site. Remove all dirt, plant parts and material that may carry noxious weed seeds into the area. Only construction equipment inspected by the Forest Service will be allowed to operate within the project area. Treat subsequent move-ins of equipment the same as the initial move-in. Clean truck beds and dump boxes hauling to the project site prior to entering the work area.”

152 - Construction Survey and Staking

Description 152.01_forest_05_11_2006

152.01 Description.

Add the following:

The Forest Service will provide the initial stakeout of the project. The staking will include three control points, footing centerlines, and road alignment. It is the Contractor's responsibility to perform any further staking, surveying, and control as required once construction has commenced.

152.00_nat_us_08_05_2005

152.01(c) Material.

Add the following:

Use required stake dimensions and materials. Pre-paint the top 2 inches of all stakes and lath, or mark them with plastic flagging. Use designated colors for paint or flagging. Mark all stakes with a stake pencil that leaves a legible imprint, or with waterproof ink.

Do not use aerosol spray paints.

Use moisture-resistant paper for survey notes. Keep notes in books with covers that will protect the contents and retain the pages in numerical sequence.

Construction Requirements

152.02 General.

Delete the first two sentences.

Add the following:

When indicated on the plans, a preliminary survey line has been established on the ground. The project location line is established by offsets from this preliminary line.

Delete second sentence in second paragraph and replace with the following:

Reestablish missing reference, control lines, or stakes as necessary to control subsequent construction staking operations

152.03 Survey and Staking Requirements.

(b) Roadway cross-sections.

Replace the first two sentences with the following:

Take roadway cross-sections normal to centerline. When the centerline curve radius is less than or equal to 200 feet, take cross-sections at a maximum centerline spacing of 25 feet. When the centerline curve radius is greater that 200 feet take cross-sections at a maximum centerline spacing of 80 feet.

c) Slope Stakes & References:

Replace section with the following:

Slope stakes and references. When required, locate slope stakes on designated portions of the road. Locate the slope stake catch points and use them to establish clearing limits and slope stake references.

Mark slope stakes with the station, the amount of cut or fill, the horizontal distance to centerline, and the slope ratios.

Place slope reference stakes at least 10 feet outside the clearing limit and mark with the offset distance to the slope stake. Place sight stakes when required.

Prior to clearing and grubbing operations, move the slope stake outside the clearing limit to the slope reference stake. After clearing and grubbing and before excavation, reset the slope stakes in their original position.

Use the designated method to establish the slope stake catchpoint.

· Method I—Computed Method. Use the template information shown in the plans or other Government-provided data to calculate the actual location of the catchpoint. The slope stake “catchpoint distance” provided may be used as a trial location to initiate slope staking. Recatch slope stakes on any section that does not match the staking report within the tolerances established in Table 152-2.

· Method II—Catchpoint Measurement Method. Determine the location of slope stake catchpoints by measuring the catchpoint distances shown in the plans or other Government-provided data.

(d) Clearing and grubbing limits.

Add the following:

Establish clearing limits on each side of the location line by measuring the required horizontal or slope distances shown in the stake notes. Mark the clearing limits with flagging or tags on trees to be left standing, or on lath. Make markings intervisible, and no more than 90 feet apart.

After establishing clearing limits, move the location line stake outside the clearing limits for station identification purposes, and mark it with horizontal distance to location line

(e) Centerline reestablishment.

Replace with the following:

Reestablish centerline from instrument control points. The maximum spacing between centerline points is 25 feet when the centerline curve radius is less than or equal to 200 feet. When the centerline curve radius is greater than 200 feet, the maximum distance between centerline points is 80 feet.

(g) Culverts.

Replace subsection with the following:

Set culvert reference stakes at all culvert locations. Set a culvert reference stake on the centerline of the culvert 10 feet from each end or beyond the clearing limit, whichever is greater. Record the following on culvert reference stakes:

(1) Diameter, actual field measured length, and type of culvert.

(2) The vertical and horizontal distance from the reference stake to the invert at the ends of the culvert.

(3) Station of actual point where culvert intersects centerline.

When required, stake headwall for culverts by setting a hub with a guard stake on each side of the culvert on line with the face of the headwall. Perform this work after clearing is completed.

152.03 (l) Miscellaneous Survey and Staking.

Add the following:

(11) Cattleguards

(12) Drain Dips

(13) Erosion Control Measures

Replace Table 152-1 with the following two tables:

Table 152-1 Tolerances for reestablishing P-line, traverse, and elevations.

A

(Bridges)

10 second rejection limit

0.02ft/1000ftc

20 second rejection limit

0.02ft/1000ftc

1 minute rejection limit

a. Accuracy of offset measurement.

b. Determine vertical closures at intervals not to exceed 2000 ft as measured along centerline.

c. Use greater value.

(1) Precision class for this project shall be “Class A”.

Table 152-2 Cross section and slope stake tolerances.

Horizontal and vertical accuracy for slope stake, slope stake references, and clearing limits. In feet or percentage of horizontal distance measured from centerline or reference stake, whichever is greater.

(1) Tolerance class for this project shall be “Class A”.

152.05_forest_05_11_2006

152.05 Measurement.

Delete this Subsection and replace with the following:

Do not measure Construction Survey and Staking for payment.

152.06_forest_05_11_2006

152.06 Payment.

Delete this Subsection and replace with the following:

Do not measure Construction Survey and Staking for payment. Compensation is made as an indirect payment to Section 208 Structure Excavation and Backfill.

154 – Contractor Sampling and Testing

154.01_forest_05_11_2006

154.01 Description.

Delete this Subsection and replace with the following:

This work consists of obtaining samples for testing, performing the tests, and reporting the test results.

154.03_forest_05_11_2006

154.03 Testing.

Delete the first sentence and replace with the following:

Perform all tests required by the Sampling and Testing Requirements tables at the end of each Section.

154.06_forest_05_11_2006

154.06 Measurement.

Delete this Subsection and replace with the following:

Do not measure Contractor Sampling and Testing for payment.

154.07_forest_05_11_2006

154.07 Payment.

Delete this Subsection and replace with the following:

Do not measure Contractor Sampling and Testing for payment. Compensation is made as an indirect payment.

155 - Schedules for Construction Contracts

155.00_nat_us_05_11_2004

155 Delete.

Delete Section 155 in its entirety.

156 - Public Traffic

156.00_nat_us_04_06_2005

Delete Section 156 in its entirety and replace with the following:

Description

156.01 This work consists of controlling and protecting public traffic adjacent to and within the project.

Material

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

Construction sign panels

Retroreflective sheeting

718.01

Aluminum Panels

718.05

Temporary concrete barrier

Temporary plastic fence

710.11

Temporary traffic control devices

718.22

Construction Requirements

156.03 General. Submit a traffic control plan at least 7 days before operations begin to the Contracting Officer for approval. Perform no work that interferes or conflicts with traffic or existing access to the roadway surface until the traffic control plan has been approved. Post construction signs and traffic control devices in conformance with MUTCD. All required signs will be in place and approved prior to beginning work on project.

A traffic control plan may include the use of an existing route through the Indianola Guard Station to by-pass the bridge #1 site; and the closure of the Indian Creek Road from the gate leaving Private land below bridge #5 to an approved location above bridge #6 where traffic can turn around. Keep the road open to traffic between bridge #1 and the gate near bridge #5 at all times except for short periods of time as necessary to accomplish work.

156.04 Temporary Traffic Control. Install and maintain temporary traffic control devices adjacent to and within the project as required by the approved traffic control plan and the MUTCD. Install and maintain traffic control devices as follows:

(a) Furnish and install traffic control devices before the start of construction operations.

(b) All detours outside of clearing limits will be approved in writing by the Contracting Officer as part of the traffic control plan.

(c) Install only those traffic control devices needed for each stage or phase.

(d) Relocate temporary traffic control devices as necessary.

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

(f) Immediately replace any device that is lost, stolen, destroyed, or inoperative.

(g) Keep temporary traffic control devices clean.

(h) Remove all temporary traffic control devices upon contract completion or when approved.

(i) When required, use flaggers certified by the American Traffic Safety Services Association, the National Safety Council, the International Municipal Signal Association, a state agency, or other acceptable organization. Perform the work described under MUTCD Part 6. Use type III, VII, VIII, or IX retroreflective sheeting on flagger paddles. Do not use flags. Flaggers must wear high visibility safety apparel as required by MUTCD 6E.02.

156.05 Temporary Closures. Road segments may be closed as shown in Table 156-1. The closure may not be put into effect until work on Bridge 1 is substantially complete. Maintain traffic control devices during closure period(s). Appropriate barricades and signs will be erected and maintained as shown in the traffic control plan or as otherwise designated.

Prior to closing roads during construction, give written notice to the Contracting Officer at least 10 days in advance.

Table 156-1

Temporary Road Closures

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

Measurement and Payment

156.07 Do not measure Public Traffic for payment. Compensation is made as an indirect payment.

157 - Soil Erosion Control

157.03_0510_us_01_20_2005

157.03 General.

Delete the first two paragraphs and add the following:

Submit a Dewatering and Erosion Control Plan detailing permanent and temporary control measures to minimize erosion and sedimentation during and after construction according to the contract specifications, contract permits, Section 107, and this Section. Contract permits amend the requirements of this Section. Do not modify the type, size, or location of any control or practice without approval. Submit the plan proposal at least 7 days before operations begin to the Contracting Officer for approval.

Reflect in the erosion control plan special concerns and measures necessary to protect resources and government improvements. Include:

1. The construction activities and sequence of implementation relating to specific erosion control measures

2. The location and type of permanent controls to be implemented during construction.

3. The location and type of temporary controls to be implemented during construction.

4. A detailed dewatering plan, for work in stream channels with running water.

5. For work in stream channels without flowing water, describe level of ground and vegetative disturbance and measures to reduce potential sediment delivery.

6. Describe what monitoring will take place.

7. Describe methods to keep runoff from the piles of excavated material from entering any adjacent stream channels.

8. Describe what supplies of erosion control materials (e.g. silt fence and straw bales) will be kept on hand to respond to sediment emergencies

157.04 Controls and Limitations on Work.

Delete the second paragraph and add the following:

(i) All project operations will cease, except efforts to minimize storm or high flow erosion, under precipitation and high flow conditions that result in uncontrollable erosion in the construction area.

(j) Native streambed materials may be conserved and stockpiled above the bankfull elevation for later use in channel. To prevent contamination from fine soils, these materials will be kept separate from other stockpiled material which is not native to the streambed.

157.06 Sediment Retaining Structures.

Add the following:

(c) Inchannel sediment barriers. Place a sediment capturing system, such as SedimatTM ,www.iviindustries.com, or approved equal in the live stream channel below the work site to capture sediment that is liberated during dewatering and rewatering of the channel. Sediment mats shall be 4 foot wide and extend across the stream and shall be installed according to the manufacturer’s recommendations. Install sediment mats prior to the start of any excavation work at the site. The sediment mats shall remain in place until removal is approved by the CO. Upon approval, the Contractor shall remove the mats without allowing sediment to enter the water course. Stake the mats out flat on the west bank at a location AS STAKED ON THE GROUND (above the high water mark). Mats shall remain at this location, no further removal required

157.08 Water Crossings.

Delete the subsection and replace with:

(a) Stream channels in occupied habitat will be dewatered prior to heavy equipment operating within project sites.

(b) Existing roadways or travel paths will be used to access or cross streams whenever reasonable.

(c) In unoccupied habitats only, equipment will only enter the flowing water portion of the stream channel at designated temporary stream crossings approved by the COR.

(d) Temporary crossings will not increase risks of channel re-routing due to high water conditions (unoccupied habitats only).

(e) Temporary crossings shall be minimized and conducted at right angles to the main channel where possible (unoccupied habitats only).

157.09 Diversions.

Add the following:

(a) Projected hydrologic data for the Bridge #1 site is:

The dewatering system must be able to accommodate a rain or snow event which could increase probable flow significantly.

(b) Any water intake structure will have a fish screen (3/32 inch openings) installed above the diversion site to prevent fish from migrating downstream during dewatering/diversion activities. If a large culvert or lined-channel is used that would facilitate the movement of fish downstream, the screen will be removed after the system is in place and approved.

(c) Flow may be diverted with pumps or structures such as cofferdams, constructed of non-erodible material, such as sandbags, bladder bags, or other means that divert water. Diversion dams will not be constructed with material mined from the stream or floodplain.

(d) The temporary bypass system may be constructed with non-erodible material, such as a pipe or a plastic-lined channel, both of which will be sized to accommodate the predicted peak flow rate (including possible storm intensities) during construction. In cases of channel rerouting, water may be diverted to one side of the existing channel.

(e) Flow will be dissipated at the outfall of the bypass system to diffuse erosive energy. The outflow will be placed in an area that minimizes or prevents damage to riparian vegetation. If the diversion inlet is not screened (to allow for downstream passage of fish), the diversion outlet will be placed in a location that facilitates safe reentry of fish into the stream channel (a fish biologist will oversee these measures).

(f) When necessary, water from the de-watered work area will either be pumped to a temporary storage and treatment site, or into upland areas, to allow subsequent filtration through vegetation prior to water reentering the stream channel.

(g) After construction, use water pressure, tamping rods, or similar hand operated equipment to force finer material into all surface or subsurface voids. Use water pressure to wash surface fines into sumps to reduce the amount of sediments released into stream waters during re-introduction. Divert the water by increments, in a slow controlled manner to ensure that the construction site streambed absorbs water and to minimize a sudden increase in turbidity.

157.11 Temporary Turf Establishment.

Delete this subsection and replace with the following Apply seed and mulch for soil erosion protection in accordance with Section 625.

157.12 Inspection and Reporting.

Delete entire subsection.

157.13 Maintenance and Cleanup.

Delete the second and third paragraph and add the following:

Upon project completion, project-related waste will be removed. Rehabilitation of all disturbed areas will be conducted in a manner that results in conditions similar to pre-work conditions through spreading of stockpiled materials (large woody debris).

The stream channel cross-section and gradient will be reconstructed within the area formerly occupied by an abutment or wing in a manner that reflects more natural conditions found up and downstream. Large wood and/or boulders may be placed in the reconstructed stream channel and floodplain (with approval by the COR).

Trees will be retained at project sites wherever possible. In-stream or floodplain rehabilitation materials such as large wood and boulders will mimic as much as possible those found in the project vicinity. Such materials may be salvaged from the project site or hauled in from offsite but cannot be taken from streams, wetlands, or other sensitive areas.

Upon completion of construction at the site, all temporary dewatering materials and equipment are to be removed from Government property.

158 – Watering for Dust Control

Delete the following subsections and replace with:

158.03 General. Provide an adequate water supply and apply water during periods of hauling materials to or from the work sites as necessary to control dust. Apply water at the locations, rates, and frequencies ordered by the CO.

158.05 Do not measure watering for dust control for payment.

158.06 Include all costs associated with the Section 158-Watering for Dust Control in the unit price for Section 151-Mobilization.

201 - Clearing and Grubbing

201.04_nat_us_02_22_2005

201.02 Delete Tree wound dressing material reference.

201.03 General

Delete the last sentence.

201.04 Clearing.

Delete subsection (c) and (d) and replace with the following:

(c) In areas outside the excavation, embankment, and slope rounding limits, cut stumps to within 12 inches or one-third of the stump diameter of the ground, whichever is higher, measured on the side adjacent to the highest ground

(d) Do not cut vegetation less than 3 feet tall and less than 3 inches in diameter, that is within the clearing limits but beyond the roadway and not in a decking area, and that does not interfere with sight distance along the road.

(e) Trim branches of remaining trees or shrubs to give a clear height of 14 feet above the roadbed unless otherwise indicated. Trim tree limbs as near flush with the trunk as practicable.

(f) If trees need to be removed to facilitate bridge placement stockpile them at an approved location to be used later for channel rehabilitation.

201.06 Disposal.

Delete the subsection and add:

Scatter construction slash outside the clearing limits without damaging trees. Place logs and stumps away from trees, positioned so they will not roll, and are not on top of one another. Scatter limbs and other construction slash on slopes to reduce slash concentrations.

201.08 Measurement

Delete the subsection and replace with the following:

Do not measure Clearing and Grubbing for payment.

201.09 Payment

Delete the subsection and replace with the following:

Include all costs associated with the Section 201 Clearing and Grubbing in the unit price for Section 208 Structure Excavation and Backfill for Selected Major Structures.

203 - Removal of Structures and Obstructions

203.01_forest_05_11_2006

203.01 Description.

Add the following:

This existing treated timber bridge and related appurtenances shall be removed and disposed of away from Forest land according to all applicable local, state, and federal regulations and 203.05(a). Temporary soil erosion control measures shall be in place prior to commencing.

203.05_nat_us_02_18_2005

204 - Excavation and Embankment

204.02_forest_03_11_2005

204.02 Definitions.

(a) Excavation

Delete the following definition and substitute the following:

(3) Borrow Excavation: Embankment material necessary to construct the bridge approaches and roadways to the lines and grades AS SHOWN ON THE DRAWINGS or AS STAKED ON THE GROUND shall be obtained by utilizing suitable surplus excavation from the bridge construction and the borrow source. Slope, shape, and finish the borrow area to lines and grades AS SHOWN ON THE DRAWINGS and as indicated in the specifications.

204.05_nat__us02_18_2005

204.05 Conserved Topsoil.

Delete the entire paragraph.

204.09_nat__us03_02_2005

204.09 Preparing Foundation for Embankment Construction.

Delete subsection (a) and replace it with the following:

(a) Embankment less than 4 feet high over natural ground. When designated, remove topsoil and break up the ground surface to a minimum depth of 6 inches by plowing or scarifying. Compact the ground surface according to Subsection 204.11.

204.10_nat__us03_02_2005

204.10 Embankment Construction.

Add the following:

Obtain written approval before beginning construction of embankments over 6 feet high at subgrade centerline.

(a) General.

Delete the third paragraph and add the following:

Compact embankment side slopes flatter than 1V:1.75H with a tamping type roller or by walking with a dozer. For slopes 1V:1.75H or steeper, compact the slopes as construction of the embankment progresses.

204.11_nat__us03_02_2005

204.11 Compaction.

Add the following compaction methods:

(d) Layer Placement (Roller Compaction) Method. Place suitable material in horizontal layers not exceeding 1 foot loose depth. Level and smooth each embankment layer. Determine the maximum density of the mixture according to AASHTO T99. Compact the full width of each layer to 95 percent of maximum density. Determine the in-place density and moisture content according to AASHTO T 310.

204.13_nat__us03_02_2005

204.13 Sloping, Shaping, and Finishing.

(a) Sloping.

Add the following:

Slope rounding is not required on tolerance class D though M roads.

204.13_nat__us03_02_2005

204.13 Sloping, Shaping, and Finishing.

Delete section (d) and add the following:

(d) Finishing. For surfaced roads, remove all material larger than 6 inches from the top 6 inches of the roadbed. For all roads, finish the roadbed to be smooth and uniform, and shaped to conform to the typical sections. Remove unsuitable material from the roadbed and replace it with suitable material. Finish roadbeds to the tolerance class shown in table 204-2.

Ensure that the subgrade for both surfaced and unsurfaced roads is visibly moist during shaping and dressing. Scarify to 6 inches below the bottom of low sections, holes, cracks, or depressions and bring back to grade with suitable material. Maintain proper ditch drainage.

For unsurfaced roads, use one of the following methods to finish the roadbed:

(1) Method A. Remove all material larger than 6 inches from the top 6 inches of the roadbed and replace with suitable material.

(2) Method B. Use a vibratory grid roller or approved equal with a minimum weight of 10 tons. Roll at least 5 full-width passes or until visible displacement ceases.

(3) Method C. For roads designated as Construction Tolerance Class K, L, or M, finish the roadbed by spreading the excavation. Eliminate rock berms.

Add Table 204-2—Construction Tolerances:

Table 204-2 Construction tolerances.

Tolerance Class(a)

Subgrade elevation

(ft)

a. Maximum allowable deviation from construction stakes and drawings.

b. Maximum allowable deviation from staked slope measured from slope stakes or hinge points.

c. Unless otherwise shown the centerline alignment and subgrade elevation, as built, have no horizontal curves with a radius of less than 80 feet, and no vertical curves with a curve length of less than 80 feet when the algebraic difference in the grade change is less than 10 percent, or a curve length of less than 100 feet when the algebraic difference of the grade change is greater than or equal to 10 percent. The centerline grade is not to exceed 20 percent in 100 feet of length.

d. Tolerance class for this project shall be “Class B”.

204.14_nat__us03_02_2005

204.14 Disposal of Unsuitable or Excess Material.

Delete the text of the first paragraph and substitute the following:

Dispose of unsuitable or excess material at designated sites or legally off of the project.

204.14_nat__us03_02_2005

204.15 Acceptance.

Table 204-1 Sampling and Testing Requirements.

Add the following note to the table:

(2) When compaction methods (d) or (e) are used AASHTO M 145, T 99, T 180, and T 310 are not required for earth embankment test methods.

207 – Earthwork Geotextiles 207.07 Delete the subsection and replace with the following:

Do not measure earthwork geotextile for payment.

207.08

Delete the subsection and replace with the following:

Include all costs associated with the Section 207 Earthwork Geotextile in the unit price for Section 251 Riprap.

208 – Structure Excavation and Backfill for Selected Major Structures

208.04 General.

Add the following:

A plan of work shall be submitted in writing and shall describe the procedures, methods, materials, and equipment the contractor proposes to use to conduct his excavating operations, including details of shoring, cribbing, and cofferdam construction and/or plans for construction of earthen, or rockfill dikes, dams, or embankments in lieu of a cofferdam. The plan of work shall include a plan of operations on how best to mobilize equipment, materials, and fill while minimizing the number of trips across the stream. Submit the plan of work at least 14 days before operations begin to the Contracting Officer for approval.

Delete the second paragraph and add the following:

Instream rocks or bedrock within occupied habitat should be broken without blasting, using non-explosive alternatives such as Betonamit, or similar noiseless, shock-free, non-toxic product.

208.10 Backfill.

Add the following to the sixth paragraph:

Structural backfill necessary to construct the bridge approaches to the lines and grades AS SHOWN ON THE PLANS or AS STAKED ON THE GROUND shall be obtained by utilizing suitable surplus excavation from the bridge construction and/or importing suitable structural backfill from the designated borrow source and/or commercial source.

208.13_forest_05_11_2006

208.12 Acceptance.

Table 208-1 Sampling and Testing Requirements.

Add the following notes to the table:

(2) Structural backfill AASHTO T 27 & T11 (gradation) and AASHTO T89 (liquid limit) test methods are not required.

(3) For structural backfill compaction, AASHTO T 310, change the sampling frequency to 3 per abutment.

251 – Riprap

251.01 Description

Delete the first sentence and add the following:

This work consists of furnishing, hauling, and placing of riprap for bank protection, slope protection, drainage structures, erosion control, and other features shown on the plans

251.07 Acceptance

Delete sampling and testing requirements of Table 251-1 and certification requirements of Subsection 106.03.

251.09 Payment.

Add the following:

The cost of excavation, embankment, haul, and earthwork geotextile required for placement of riprap is incidental to the pay item listed in the bid schedule.

308 – Minor Crushed Aggregate

308.01_forest_05_11_2006

308.01 Description.

Delete the second sentence:

308.05_forest_05_11_2006

308.05 Compacting and Finishing Crushed Aggregate.

(a) Roadway aggregate

Delete following definition for Method 2 and replace with the following:

Determine the maximum density of the mixture according to AASHTO T99. Compact each layer full width. Compact each layer to 95 percent of maximum density. Determine the in-place density and moisture content according to AASHTO T 310.

308.06_forest_05_11_2006

308.06 Acceptance.

Table 308-1 Sampling and Testing Requirements.

Add the following note to the table:

(1) For crushed aggregate compaction, AASHTO T 310, change the sampling frequency to 1 per 30 cubic yards.

308.07_forest_05_11_2006

308.07 Measurement.

Add the following: Measure aggregate by cubic yard compacted in place when payment is by contract quantities.

404 - Minor Hot Asphalt Concrete

404.02_nat__us03_02_2005

404.02 Composition of Mix (Job-Mix Formula).

Delete the second paragraph and replace with the following:

Submit a job-mix formula and supporting documentation, test results, and calculations for the material to be incorporated into the work. Maximum size of aggregate shall be ¾-inch. It is the government’s intent to use a commercial mix which is readily available for state highway construction. Include copies of laboratory test results and mix design data that demonstrate that the properties of the aggregate, additives, and mixture meet the current requirements and criteria of Federal or state agencies. After reviewing the Contractor’s proposed job-mix formula, the CO will determine the final values for the job-mix formula to be used and notify the Contractor in writing.

404.04_nat__us03_02_2005

404.04 Weather Limitations.

Change 35o F to 40o F:

408.09_forest_03_11_2005

404.09 Acceptance.

Table 404-1 Sampling and Testing Requirements.

Add the following note to the table:

(1) For asphalt mixture compaction, AASHTO T 310, change the sampling frequency to as designated by the engineer..

625 - Turf Establishment

625.01_forest_05_11_2006

625.03 General.

Delete this subsection and replace with the following:

Apply seed mix to prepared ground or any disturbed area between September 30 and November 30. Seed and mulch all disturbed areas, including, but not limited to, roadway cut and fill slopes, staging area, waste area, and temporary stockpile areas within 10 days after completion of ground disturbing activities. If work at one site is completed prior to September 30th, the disturbed areas should be covered with mulch to reduce soil erosion. If the mulch is placed prior to seeding, the mulch will need to be pulled back and replaced after the seed is broadcast. Seeded areas damaged by construction activities shall be reseeded within 10 days of the damage. Do not seed during windy weather or when the ground is excessively wet or frozen.

Assure that all seed and mulch used in the work conforms to the weed free requirements of Section 713.

625.04 Preparing Seedbed.

Delete entire subsection and replace with the following:

Finish the areas to be seeded according to the lines and grades as required by other applicable sections. Restore areas that are damaged by erosion or other causes. Ensure that the surface soil is in a roughened condition favorable for germination and growth.

625.05 Watering.

Delete entire subsection.

625.06 Fertilizing.

Delete entire subsection.

625.07 Seeding.

Delete the first sentence and add the following.

Apply seed mix using the Dry Method.

(a) Dry method. Delete the third sentence.

Add the following after subsection (b).

Seed Mix. Furnish and apply the following kinds and amounts of pure live seed:

Quantity of Pure

Type of Seed

Live Seed (Lbs/Acre)

1. Slender Wheatgrass

10 lbs/acre

2. Tufted Hairgrass

¼ lbs/acre

3. Mountain Brome

15 lbs/acre

Total 25 ¼ lbs/acre Determine the pounds of seed to be furnished per acre by dividing the pounds of pure live seed required per acre by the product of the percent purity and percent germination.

625.08 Mulching.

Delete the entire subsection and replace with the following:

Apply mulch after seeding by the following methods.

(a) Dry Method. Scatter certified weed free straw on the finish fill slopes and disturbed areas uniformly over the entire disturbed area at a rate that results in an even layer covering 80-90% of the application area.

625.09 Protecting and Caring for Seeded Areas

Delete the first sentence and add the following:

Protect and care for seeded areas until final acceptance.

625.11 Measurement.

Delete the entire Subsection and replace with the following:

Measure the Section 625 items listed in the bid schedule according to Subsection 109.02.

718 – Traffic Signing and Marking Material

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.

�I like this one over the other one because it states features instead of locations.