J1_RockyGorgeSpecifications.pdf

ROCKY GORGE TRAIL STORM DAMAGE REPAIR

Saco Ranger District White Mountain National Forest Conway, NH

SECTION C – DESCRIPTION AND SPECIFICATIONS

C-1 - PROJECT DESCRIPTION AND LOCATION

a) Description of Work – The intent of this contract is to provide for the complete project as described.

Work includes furnishing all labor, equipment, supplies, operations, supervision, transportation, and incidentals necessary to perform the work in its entirety.

This project consists of, but is not limited to repair of flood damaged asphalt and gravel surfaced trail, trail shoulders, trail/river overlook pads and rock walls, trail bridge abutment riprap armoring, bench replacement, seeding and mulching.

b) Project Location – The Rock Gorge Scenic Area (parking area and trailhead) is located on the Kancamagus Highway, NH-112 on the right, approximately 8 miles west of Conway, New Hampshire.

c) Price Range – Between $25,000 and $100,000.

d) Government Furnished Materials – None.

e) Submittals – The Contractor shall submit work schedules, traffic control plans, pollution prevention and soil erosion plans, and material source lists and samples, as required prior to commencing work.

f) Staging Area – The Contractor shall coordinate with the CO on a staging area location. The Contractor shall operate all equipment and store, transport, and handle materials in a manner that will not damage the existing roads, parking lots, and landscaping.

g) Electrical – There is no electrical service on this project.

h) Security and Protection – Security is the Contractor’s responsibility. Limit access to the construction area to persons involved in the work. Provide secure storage for materials that are stored on site. Secure completed work as required to prevent loss.

Barricades, warning signs, and lights shall comply with standards and code requirements for erection of structurally adequate barricades. All highway and trail warning signs, barricades, and traffic control devices shall conform to MUTCD. Where appropriate and needed, provide lighting, including flashing red or amber warning lights.

The Contractor shall barricade and block all access to holes with orange plastic fence, flashing amber lights, or warning signs. Holes or trenches shall not be left open more than 24 hours unless approved by the CO.

i) Maintenance of Traffic – The Contractor shall have all temporary construction signs and traffic control measures in place prior to beginning work. The Contractor is authorized to use roads under the

White Mountain National Forest Conway, NH jurisdiction of the Forest Service for all activities necessary to complete this contract, subject to limitations and authorizations shown on the Drawings or specified under this contract, when such use will not damage the roads or National Forest resources, and when traffic can be accommodated safely.

Temporary closure of the trail and a designated portion of the adjacent parking area shall be allowed during the construction period.

Before shutting down operations, take all necessary precautions to prevent damage to the project, such as temporary detours, approaches, crossings, or intersections; and provide for normal and storm drainage and minimization of erosion.

Any emergency vehicle shall be allowed immediate reasonable passage.

j) Protection of Improvements – The Contractor shall complete sequences of construction activity in order to prevent damage to equipment, material, and articles incorporated into the work covered by this contract.

If, prior to or during excavation work, items of archaeological, paleontological, or historic value are reported or discovered, or an unknown deposit of such items is disturbed, the Contractor shall immediately cease excavation in the area so affected. Contractor will then notify the Forest Service and will not resume excavation until written approval is given by the authorized officer.

k) Potable Water – There is no potable water available on this site. Contractor shall furnish water for all construction needs including suitable moisture for processing, testing, and compaction.

l) Toilet Facilities – Toilets are available at the parking area.

C-2- SPECIFICATIONS

This project uses the Standard Specifications for Construction of Roads and Bridges on Federal Highway Projects (FP-03), U.S. Customary Units; available by reference and download from http://flh.fhwa.dot.gov/resources/pse/specs/fp-03/fp-03usc.pdf

Supplemental specifications are included with this project as attached, see Section J.

C-3 - DRAWINGS

The following drawings are applicable to this project and included as attached, see Section J.

SHEET NO. TITLE

1 COVERSHEET

http://flh.fhwa.dot.gov/resources/pse/specs/fp-03/fp-03usc.pdf

White Mountain National Forest Conway, NH

SHEET NO. TITLE

2 WORK DESRIPTION AND LOCATION

3 SCHEDULE OF ITEMS & CONST. NOTES

4-5 DRAWINGS, TYP. SECTIONS, & DETAILS

C-4 – EXISTING UTILITIES

The Contractor shall contact Utility Locaters prior to any excavation, trenching, or other ground disturbing activity. The Contractor shall be responsible for protecting or otherwise replacing utilities damaged by Contractor’s operations.

C-5 - CLEANUP

The Contractor shall be responsible for solid waste disposal. The Contractor shall at all times keep the area in a clean, neat, and orderly condition. Construction related debris including, but not limited; to used motor oil, oil cans, grease cartridges and refuse shall be removed promptly from the site and disposed of in a lawful manner off National Forest System lands. Fees for the use of landfills or transfer stations shall be paid for by the Contractor if there is a charge.

Supplemental Specifications Rocky Gorge Trail Restoration

Table of Contents

Table of Contents

Preface

101 - Terms, Format, and Definitions

101.01 Meaning of Terms

101.03 Abbreviations

101.04 Definitions

102 - Bid, Award, and Execution of Contract

102 Bid, Award, and Execution of Contract

103 - Scope of Work

Deletions

104 - Control of Work

Deletions

104.06 Use of Roads by Contractor

105 - Control of Material

105.02 Material Sources

105.02(a) Government-provided sources

105.05 Use of Material Found in the Work

106 - Acceptance of Work

106.07 Delete

107 - Legal Relations and Responsibility to the Public

107.05 Responsibility for Damage Claims

107.06 Contractor’s Responsibility for Work

107.09 Legal Relationship of the Parties

107.10 Environmental Protection

108 - Prosecution and Progress

108 Delete

109 - Measurement and Payment

109 Deletions

109.02 Measurement Terms and Definitions

155 - Schedules for Construction Contracts

155 Delete

156 - Public Traffic

157 - Soil Erosion Control

157.03 General

171 - Weed and Disease Prevention

203 - Removal of Structures and Obstructions

203.01

203.05 Disposing of Material

204 - Excavation and Embankment

204.11 Compaction

204.15 Acceptance

Table 204-1 Sampling and Testing Requirements

251 - Riprap

301 - Untreated Aggregate Courses

301 Title Change

301.01 Work

301.02 Material

301.03 General

301.04 Mixing and Spreading

301.05 Compacting

301.09 Measurement

404 - Minor Hot Asphalt Concrete

404.02 Composition of Mix (Job-Mix Formula)

404.04 Weather Limitations

404.06 Placing

404.07 Compacting (a)

404.07 Compacting (b)

620A – Stone Walkways and Pads

620A.01 Description

620A.02 Conform to the following Section and subsections:

620A.03 General – (a.) Overlook walls

620A.03 General – (b.) Overlook pads

620A.04 Preparation of Overlook Subrade, Base, and Bedding

620A.05 Placing Overlook Stone Surface

620A.06 Finishing Overlook Stone Surface

620A.07 Measurement & Payment

625 - Turf Establishment

625.03 General

625.04 Preparing Seedbed

625.05 Watering

625.06 Fertilizing

625.07 Seeding

625.08 Mulching

625.09 Protecting and Caring for Seeded Areas

625.11 Measurement

630 - Seating

630.01 General

630.02 Salvage

630.03 Installation

630.04 Measurement and Payment

635 - Temporary Traffic Control

635.03 General

705 - Rock

705.02 Riprap Rock

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.

http://www.nist.gov/

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.

101.04_nat_us_11_06_2007

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.

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.

155 - Schedules for Construction Contracts

155.00_nat_us_05_11_2004

155 Delete.

Delete Section 155 in its entirety.

155.01 Contractor shall submit a written construction schedule for approval 7 days prior to starting work.

156 - Public Traffic

Delete Section 156.03 thru 156.10:

156.03 General

(a) The trail shall be kept in an open and passable condition during the project when practicable and it can safely be accommodated. Contractor shall provide necessary signage and traffic control to guide trail users around the project site and away from construction activities.

(b) Contractor shall barricade and block all access to holes and trenches with orange safety fencing, flashing amber lights, or warning signs.

156.04 Temporary Closure

(a) The trail may be closed for time periods approved in advance by the Forest Service. Provide a written closure schedule to the Forest Service for approval a minimum of 10 days prior to planned closures.

(b) Trail closure shall include the furnishing, installing, maintaining, and removal of all barricades and signs required for the closure period.

157 - Soil Erosion Control

157.03_nat_us_02_24_2005

157.03 General

Delete the entire subsection and replace with the following:

Prior to the start of construction, submit a written plan that provides permanent and temporary erosion control measures to minimize erosion and sedimentation during and after construction.

Do not begin work until the necessary controls for that particular phase of work have been implemented. Do not modify the type, size, or location of any control. An alternate erosion control plan with all necessary permits may be submitted 30 days before intended use.

Incorporate all permanent erosion control features into the project at the earliest practicable time, as outlined in the approved plan.

When erosion control measures are not functioning as intended, immediately take corrective action.

171 - Weed and Disease Prevention

171.00_nat_us_03_30_2005

Description

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.

Material

171.02 Conform to the following Subsection:

Water 725.01

Construction Requirements

171.03 General . Notify the CO in writing at least 15 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.

203 - Removal of Structures and Obstructions

203.01

Remove existing asphalt pavement to a depth of 8 inches.

203.05 Disposing of Material.

Delete (b), (c), and (d)

ADD: (e) Recycle. Asphalt pavement may be reclaimed (ground) and used as subgrade or base material upon request and approval by the COR. Use of this material shall only be allowed when it will be surfaced over with asphalt pavement and at locations approved by the COR.

204 - Excavation and Embankment

204.11_nat_us_04_11_2005

204.11 Compaction.

Delete the first paragraph and replace it with the following:

For compaction according to method (a), (b), or (c), use AASHTO T 27 to determine the amount of material retained on a Number. 4 sieve. For compaction methods (d) or (e) no sieve test is required.

Add the following compaction methods:

(d) Layer Placement Method (Hauling and Spreading Equipment). Place material by end dumping to the minimum depth needed for operation of spreading equipment. Level and smooth each embankment layer before placing the next layers. Operate hauling and spreading equipment uniformly over the full width of each layer. Construct a solid embankment with adequate compaction by working smaller rock and fines in with the larger rocks to fill the voids, and by operating hauling and spreading equipment uniformly over the full width of each layer as the embankment is constructed.

(e) Layer Placement (Roller Compaction) Method. Place material by end dumping to the minimum depth needed for operation of spreading equipment. Adjust the moisture content of the material to obtain a mass that will not visibly deflect under the load of the hauling and spreading equipment. Operate compaction equipment over the full width of each layer until visible deformation of the layer ceases or, in when a sheepsfoot roller is used, the roller “walks out” of the layer. Make at least three complete passes.

204.15_nat_us_02_07_2007

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.

251 - Riprap

251.03_nat_us_08_05_2009

Construction Requirements

251.08 Measurement.

Payment for excavation and embankment required for placement of riprap is indirectly included in the pay item for riprap.

301 - Untreated Aggregate Courses

301.00_nat_us_03_03_2005

301 Title Change.

Change the title to: Section 301 Aggregate Courses

301.01_nat_us_03_03_2005

301.01 Work.

Add the following:

Work includes producing aggregate by pit-run, grid rolling, screening, or crushing methods, or placing Government-furnished aggregate. Work may include additive mineral filler, or binder.

301.02_nat_us_05_16_2005

301.02 Material.

Add the following:

Bentonite 725.30

Calcium Chloride Flake 725.02

Lignon Sulfonate 725.20

Magnesium Chloride Brine or Calcium Chloride Liquid 725.02

301.03_nat_us_09_14_2005

301.03 General.

Add the following:

Written approval of the roadbed is required before placing aggregate.

For pit run or grid-rolled material, furnish material smaller than the maximum size. No gradation other than maximum size will be required for pit-run or grid-rolled material. For grid rolling, use all suitable material that can be reduced to maximum size. After processing on the road, remove all oversize material from the road and dispose of it as directed by the CO.

Provide additives or binder, if required, at the proportions specified.

Develop and use Government furnished sources according to Section 105.

If the aggregate is produced and stockpiled before placement, handle and stockpiled according to Section 320. Establish stockpile sites at locations approved. Clear and grub stockpile sites according to Section 201.

301.04_nat_us_03_03_2005

301.04 Mixing and Spreading.

Delete the first sentence of the first paragraph and add the following:

Ensure that aggregate and any required additives, water, mineral filler, and binder are mixed by the specified method except, if crushed aggregate products are being produced and mineral filler, binder, or additives are required, uniformly blend following crushing. Control additive proportions to 0.5 percent dry weight.

(a) Stationary Plant Method. Mix the aggregate with other required materials in an approved mixer. Add water during the mixing operation in the amount necessary to provide the moisture content for compacting to the specified density. After mixing, transport the aggregate to the jobsite while it contains the proper moisture content, and place it on the roadbed or base course using an aggregate spreader.

(b) Travel Plant Method. After placing the aggregate for each layer with an aggregate spreader or windrow-sizing device, uniformly mix it with other required materials using a traveling mixing plant. During mixing, add water to provide the necessary moisture content for compacting.

(c) Road Mix Method. After placing the aggregate for each layer, mix it with other required materials at the required moisture content until the mixture is uniform throughout. Mix aggregate, water, and all other materials until a uniform distribution is obtained.

Spread the aggregate in a uniform layer, with no segregation of size, and to a loose depth that will provide the required compacted thickness.

When placing aggregate over geotextile, place aggregate in a single lift to the full depth specified.

Route and distribute hauling and leveling equipment over the width and length of each layer.

301.05_nat_us_05_17_2005

301.05 Compacting

Delete and replace with the following:

Compact each layer full width. Roll from the sides to the center, parallel to the centerline of the road. Along curbs, headers, walls, and all places not accessible to the roller, compact the material with approved tampers or compactors.

Compact the aggregate using one of the following methods as specified:

Compaction A. Operating spreading and hauling equipment over the full width of the travelway.

Compaction B. Operate rollers and compact as specified in Subsection 204.11(a)(1).

Compaction C. Moisten or dry the aggregate to a uniform moisture content between 5 and 7 percent based on total dry weight of the mixture. Operate rollers and compact as specified in Subsection 204.11(a)(1).

Compaction D. Compact to a density of at least 95 percent of the maximum density, as determined by AASHTO T 99, method C or D.

Compaction E. Compact to a density of at least 96 percent of the maximum density, as determined by the Modified Marshall Hammer Compaction Method (available upon request from USDA Forest Service, Regional Materials Engineering Center, P.O. Box 7669, Missoula, MT 59807).

Compaction F. Compact to a density of at least 95 per-cent of the maximum density, as determined by AASHTO T 180, method C or D.

Compaction G. Compact to a density of at least 100 percent of the maximum density as determined by the Modified Marshall Hammer Compaction Method (available upon request from USDA Forest Service, Regional Materials Engineering Center, P.O. Box 7669, Missoula, MT 59807).

For all compaction methods, blade the surface of each layer during the compaction operations to remove irregularities and produce a smooth, even surface. When a density requirement is specified, determine the in place density and moisture content according to AASHTO T 310 or other approved test procedures.

301.09_nat_us_07_07_2005

301.09 Measurement.

Replace the second paragraph with the following:

Measure aggregate by cubic yard compacted in place when payment is by contract quantities.

301.10_nat_us_03_03_2005

301.10 Payment

Delete the following:

adjusted according to Subsection 106.05

404 - Minor Hot Asphalt Concrete

404.02_nat_us_06_09_2006

404.02 Composition of Mix (Job-Mix Formula).

Delete the second paragraph and replace with the following:

Material shall be ¾-Inch Single Course Mix as produced and provided by Pike Industries, Inc. or approved equal.

404.04_nat_us_03_02_2005

404.04 Weather Limitations.

Change 35o F to 45o F:

404.06_nat_us_03_02_2005

404.06 Placing.

Add the following:

Do not place asphalt until the CO has approved in writing the area where it will be placed.

Delete the last sentence and replace with the following:

Offset the longitudinal joint of one layer at least 6 inches from the joint in the layer immediately below. Make the longitudinal joint in the top layer along the centerline of two-lane roadways or at the lane lines of roadways with more than two lanes. Offset transverse joints in succeeding layers and in adjacent lanes at least 10 feet, where possible.

404.07_nat_us_03_02_2005

404.07 Compacting (a).

Delete and replace with the following:

(a) Roadway paving. Thoroughly and uniformly compact the surface a minimum of three passes with rollers that meet one of the following requirements:

(1) Steel-wheeled rollers, other than vibratory type, capable of exerting a force of not less than

1.5 ton/feet of width of the compression roll or rolls.

(2) Vibratory steel-wheel rollers with a minimum mass of 5 ton, equipped with amplitude and frequency controls, and designed to compact asphalt concrete.

(3) Pneumatic-tire rollers with smooth tread tires of equal size that provide a uniform compacting pressure for the full width of the roller and capable of exerting a ground pressure of at least 80 lbf/in2.

Perform initial compaction while the mixture is above 250 °F. Perform finish rolling with steel-wheel rollers and continue until no roller tracks remain.

404.07_nat_us_03_02_2005

404.07 Compacting (b).

Delete and replace with the following:

(b) Non-roadway paving. Compact by rolling with a hand-operated roller with a mass of least 1 ton. Perform initial compaction while the mixture is above 250 °F and continue until no roller tracks remain.

620A – Stone Walkways and Pads

620A. Complete specification

620A.01 Description

This work consists of constructing, reconstructing, or rehabilitating trail overlook stone pads and associated walls.

620A.02 Conform to the following Section and subsections:

Masonry and Mortar Cement 701.02

Rock for Masonry Structures 705.03

Geotextile and Geocomposite Drain Material 714.01

620A.03 General – (a.) Overlook walls

Existing rock walls shall be repaired by resetting displaced large rock and chinking existing rock to stabilize and fill voids. Chinking rock shall be set to a depth so not to protrude beyond the face of existing wall rock. Voids need not be filled completely, but finished work shall provide adequate stabilization of wall rock and chinking/spaces shall be consistent throughout. Provide sample section for approval by the COR prior to moving forward with completion.

Rock for chinking shall be similar in type and color of existing chinking and surrounding wall rock. All chinking shall be a crushed or broken type stone having sharp edges and angular faces.

620A.03 General – (b.) Overlook pads

Furnish stone that matches or is similar to existing stone on and around the site. Submit stone samples to the CO for review and selection 14 days prior to starting any work. Samples shall represent the color range, shape and size of stone. “Green Mountain Granite” or others as produced by Swenson Granite Works, Concord, NH may be possible and acceptable for stone type and color.

Keep an adequate inventory of the stone on the site to provide an ample variety of stones for use.

If additional stone is required, closely match existing in use stone and mix with existing stone to provide uniform color and pattern throughout.

Finished surface of the stone pad shall be 4” minimum below the top of the surrounding rock wall, as indicated on the drawings and be relatively smooth with all depressions, projections, and slope meeting accessibility requirements.

Excavate and backfill according to Section 209. Fully compact the subgrade and base prior to placing bedding material. Compact and shape the stone bedding so finished surface will drain and meet accessibility requirements. Clean the bearing surface thoroughly prior to setting the stones.

620A.04 Preparation of Overlook Subrade, Base, and Bedding

Prepare the overlook pads for stone surface placement by completing the following:

Excavate the subgrade to depth necessary to allow placement of required depth of base and bedding materials, level and compact. Backfill material required, if any, to bring the subgrade up to required grades shall be approved by the COR. Suitable on site materials, if available and approved may be used.

Place base layer of ¾ inch to 1 inch washed stone, 6-inch compacted thickness, level and compact.

Install Type II-C geotextile fabric separation layer between stone base and crushed gravel bedding.

Place stone bedding layer of ¾” sandy crushed bank run gravel, 6-inch compacted thickness, shape to drain and compact.

620A.05 Placing Overlook Stone Surface

Stone shall be placed in a random pattern of size and color, with consistent joint width spacing.

Joint size shall be 1 minimum width, unless requested and approved otherwise by the COR.

Joints may be at angles with the vertical not to exceed 30 degrees. Clean all stones thoroughly prior to placing. Remove and reset or replace any stone not meeting accessibility requirements immediately.

Chock the joints flush with a dry mixture of 4 parts sand and 1 part cement by mass and carefully water the surface with clean water to saturate the joint filler. Wet stones and open joints to be filled prior to placing joint filler.

Repoint any joint not meeting the specifications and/or accessibility requirements.

Protect the masonry from hot &/or dry weather and keep it wet for at least 72 hours.

Do not fill joints when the ambient temperature is below 40 °F and maintain the completed masonry at a temperature above 40 °F for a minimum of 24 hours after completion.

620A.06 Finishing Overlook Stone Surface

Clean all stone surfaces with an approved cleaning product and per manufacturers’ recommendations to remove all cement residues. Final wash and brush the entire surface to remove remaining cement, cleaning product residues, soil and debris.

620A.07 Measurement & Payment

Measure the Section 620A items listed in the bid schedule according to Subsection 109.02.

Payment will be for the accepted quantities at the contract price per unit of measurement for the Section 620A pay items listed in the bid schedule. Payment will be full compensation for all work prescribed in this Section. See Subsection 109.05.

625 - Turf Establishment

625.03_nat_us_02_25_2005

625.03 General.

Delete the first subsection and add the following:

Seed and mulch all disturbed areas with 100% Winter Rye at a rate of 50 lbs/Acre. Apply seed between May and September. Do not seed during windy weather or when the ground is excessively wet, frozen, snow covered, extremely dry, cloddy, hard pan, or is otherwise untillable.

625.04 Preparing Seedbed.

Delete entire subsection and replace with the following:

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 and replace with the following:

No fertilizer required.

625.07 Seeding.

Delete the first sentence and add the following.

Apply seed mix by the following methods:

(a) Dry method. Delete the third sentence.

625.08 Mulching.

Delete the entire subsection and replace with the following:

Apply Mulch within 24 hours after seeding by the following methods.

(a) Dry Method. Apply straw mulch with a hand spreader or a spreader utilizing forced air.

(b) Hydraulic Method. Apply mulch in a separate application from the seed using hydraulic-type equipment according to Subsection 625.07(b).

Apply so no hole in the matrix is greater than 0.04 inches. Apply so that no gaps exist between the matrix and the soil.

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.

630 - Seating

635.03_nat_us_05_13_2004

630.01 General.

Work consists of salvaging and resetting existing benches identified on the drawings

630.02 Salvage.

Salvage existing benches and secure at a safe, on-site location until needed. If possible, remove existing concrete shall be removed prior to reinstalling.

630.03 Installation.

Install/reset bench at location noted on the drawings or designated by the COR. Contractor shall excavate the post holes to a sufficient depth to accommodate the seat height to meet accessibility requirements. Bench posts shall be set in concrete. 24-inch Sonotube or other approved design shall be used for form.

Concrete shall be minimum compressive strength of 4000 psi. Supports shall be set so the seat height meets accessibility requirements.

630.04 Measurement and Payment.

Measure the Section 630 items listed in the bid schedule according to Subsection 109.02.

The accepted quantities will be paid at the contract price per unit of measurement for the Section 630 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section.

635 - Temporary Traffic Control

635.03_nat_us_05_13_2004

635.03 General.

Install temporary traffic control signs to temporary posts or approved temporary sign mounts.

705 - Rock

705.02_nat_us_08_05_2009

705.02 Riprap Rock.

Delete Table 705-1 and replace it with the following:

Gradation Requirements for Riprap

Class Percent of Rock by Mass

Mass (pounds)

Approximate Cubic Dimension b,c (inches)

20 22 to 33 6 to 8 30 11 to 22 5 to 6 40 1 to 11 2 to 5 10a 0 to 1 0 to 2

20 55 to 110 8 to 10 30 22 to 55 6 to 8 40 2 to 22 3 to 6 10a 0 to 2 0 to 3

20 220 to 330 14 to 16 30 110 to 220 10 to 14 40 11 to 110 5 to10 10a 0 to 11 0 to 5

20 550 to 770 18 to 20 30 220 to 570 14 to 18 40 22 to 220 6 to 14 10a 0 to 22 0 to 6

4a

20 770 to1353 20 to 24 30 330 to 770 16 to 20 40 33 to 330 7 to16 10a 0 to 33 0 to 7

20 1540 to 2200 26 to 28 30 1100 to 1540 20 to 26 40 55 to 1100 8 to 20 10a 0 to 55 0 to 8

20 1870 to 3520 28 to 34 30 1100 to 1870 22 to 28

40 110 to 1100 10 to 22 10a 0 to 110 0 to 10

20 4400 to 5940 35 to 39 30 2200 to 4400 28 to 35 40 220 to 2200 14 to 28 10a 0 to 220 0 to 14

20 7000 to 10000 42 to 47 30 4000 to 7000 35 to 42 40 400 to 4000 16 to 35 10a 0 to 400 0 to 16

(a) Furnish spall and rock fragments graded to provide a stable dense mass.

(b) The volume of a rock with these cubic dimensions has a mass approximately equal to the specified rock mass.

(c) Furnish rock with breadth and thickness at least one-third its length.