GMUG_Contract_Specifications_2.doc

AG-82MK-S-XX-XXXX

Ouray and Norwood Ranger Districts

Road Maintenance IDIQ

Subgrade – Top surface of roadbed upon which sub-base, base or surface course is constructed. For roads without base course or surface course, that portion of roadbed prepared as the finished wearing surface.

Suitable Material – material of sufficient quality to maintain or repair roads. No organic or frozen material or lumps, or chunks of highly plastic clay or other objectionable material.

Surface Course – the top layer of a pavement structure, sometimes called the wearing course, usually designated to resist skidding, traffic abrasion, and the disintegrating effects of climate.

Traveled Way – the portion of the roadway for the movement of vehicles, exclusive of shoulders on asphalt paved roads. For purpose of this contract traveled way includes turnouts and curve widening.

Turnouts – A short auxiliary lane provided for passage of meeting vehicles, normally 75 feet with 25 feet transitions.

Unsuitable Material – Material that is not suitable to be incorporated into the work. Such as organic or frozen material or lumps, or chunks of highly plastic clay or other objectionable material.

Water bar (Rolling Dip) – A drainage structure constructed across the roadbed surface to divert water from the road surface. Vehicular passage is not a consideration.

806 – REGULATORY REQUIREMENTS

1.

DESCRIPTION

This Section identifies the codes and standards which apply to the work in this contract.

2. REQUIREMENTS

The Contractor shall comply with any Federal, State, and municipal laws, codes, regulations, and standards that apply to the work to include but not limited to the following:

29 CFR Part 1926 – Safety and Health Regulations for Construction

49 CFR – Transportation

Manual of Uniform Traffic Control Devices (MUTCD)

NFPA 30 – Flammable and Combustible Liquids Code

NFPA 30A – Motor Fuel Dispensing Facilities and Repair Garages

American Society for Testing and Materials (ASTM) Standards

3. MEASUREMENT AND PAYMENT

No separate measurement or payment will be made for meeting requirements of this Section. All work and materials shall be incidental to paid work in this contract.

807 EQUIPMENT RENTAL

1. DESCRIPTION

This Section establishes the basis for the Government to order road maintenance work not otherwise under the contract.

2.

PREWORK REQUIREMENTS

Prior to the issuance the Work Order, the Contractor shall provide the Government with a listing of proposed rental rates for specified equipment.

3.

EQUIPMENT

a. Equipment under this Section, shall be provided fully operated by the Contractor and includes subcontractor equipment performing work under the contract. A competent qualified operator shall be provided by the Contractor.

b. The Government will review the proposed rates and those common to the area for this type of use. Mutually agreed rates will be established. Work Orders may be issued as needed to obtain work under this Section.

c. Per Section 881 Mobilization: in order to prevent the spread of noxious weeds, the Contractor shall clean all equipment prior to moving it to the project area (National Forest System lands). This cleaning shall remove all soil, plant parts, seeds, vegetative matter, or other debris that could contain or hold seeds. Only construction and maintenance equipment and the equipment necessary to transport said equipment, shall be cleaned and inspected by the Forest Service prior to operating within the project area. This requirement does not apply to service vehicles, water trucks, pickups, cars, and/or similar vehicles.

4. DELIVERY OF EQUIPMENT TO SITE

The Government, in conjunction with the Contractor, will determine if equipment is to be moved onto and off the site by roading under its own power or by use of Contractor's truck transport. The Work Order will include the method of moving as roading or transport. Subsequent moving of equipment from one portion of the job to another shall be by roading unless otherwise documented in the Work Order.

5.

HOURS OF OPERATION

Hours of operation shall be the same as for the Contractor's regular work shift, unless otherwise directed in writing by the Government.

6.

TIMEKEEPING AND COMPENSATION

a. Time for equipment roading will commence with the beginning of the move. Time will be counted for the operator during roading.

b. Time for equipment transported will be in accordance with the appropriate of the following:

1. When equipment is not being actively used on the contract at the time moving is ordered under this Section, time will be counted for the transporting vehicle, but not the equipment being transported.

2. Where work under this contract is interrupted for ordered performance under this Section, time will be counted for the transporting vehicle and the equipment that would otherwise have been operating.

c. The equipment hours recorded will be paid for at the agreed rate. Labor costs paid for under this Section will be those paid by the Contractor under this contract.

7. PAYMENT

a. Equipment rental rates will include operator.

b. Payment will be made under:

Pay Item:

Pay Unit

807(1)a Rental Equipment, Type Motor Grader, Hour

Articulate Frame, 140 Horsepower, Minimum 807(1)b Rental Equipment, Type Backhoe w/attachment, 4-wheel drive, 70 Horsepower, Minimum

807(1)c Rental Equipment, Type Front End Loader, 4-wheel drive, 170 Horsepower, Minimum

807(1)d Rental Equipment, Type Dozer, Standard

Crawler with Rippers 150 Horsepower, Minimum

807(1)e Rental Equipment, Type Excavator, Crawled Mounted 135 Horsepower, Minimum

807(1)f Rental Equipment, Type Roller, 8-10 Tons , Minimum

807(1)g Rental Equipment, Type Dump Truck, Diesel, 10 CY

807(1)h Rental Equipment, Type Chainsaw, 20 Inches, Minimum 807(1)i Rental Equipment, Type Whacker Compactor,

4.5 HP, Minimum

807(1)j Rental Equipment, Type Water Pump, 2 Inches, Minimum

807(2) Rental Equipment Moving, Truck Transport Hour

807(3) Laborer Hour

808 - WORK AREA MANAGEMENT

808.01 Description:

This Section establishes Contractor responsibilities for traffic control and equipment requirements in work areas.

808.02 Requirements

A. Traffic Conditions - Unless otherwise provided, roads other than those listed for work under Section 835 are open to traffic with not more than one (1) hour maximum delay.

B. A plan for satisfactory handling of traffic, approved by the Government, is required prior to initiating or performing work which interferes with use of traveled roadways.

C. Traffic Control Devices

1. Provide signs and other devices complying with National Standards as contained in Part VI of the Manual of Uniform Traffic Control Devices (MUTCD). Provide traffic control for occupied work areas that is in accordance with these specifications. All signs and devices remain the property of the Contractor.

2. Keep traffic devices current with maintenance operation and remove upon completion.

3. Use warning signs to control traffic approaching the work area from either direction and also from side accesses.

4. Required signs may be mounted on portable or temporary mountings. Use standard MUTCD shapes, colors, sizes, and legends.

5. Mark hazards incidental to the work within or on the traveled way, shoulders, or turnouts with hazard identification markers, illuminated beacons, and other MUTCD devices to safely guide road users through the area. Mark work segments not completed on a daily basis appropriately for night travel. Obtain authorization before commencing work at night.

6. Advisory speed plates may be used to control traffic through the work area.

D. Flaggers - Provide properly equipped, trained and certified, flag person(s) where the traffic is required to stop before proceeding. Stop traffic in locations which provide width enough for passage of traffic and reasonable protection for vehicles. When flag control is used, advance warning signs are required.

E. Contractor's Equipment

1. Equip all vehicles and machinery operating on or from the traveled way or road shoulder with flashing lights, strobes, or rotary beacons operated continuously while work is in progress. Use truck headlights at all times while operating. Backup horns are required on all self-propelled equipment in excess of 5½ tons gross weight.

2. Park vehicles and machinery not currently in use off the traveled way at approved locations to minimize interference with normal use.

F. Project Area Priority - The Government reserves the right to direct the sequencing of the work. Certain project areas may be designated as higher priority, which would require earlier completion than other areas. Task orders may run concurrently.

808.03 Measurement and Payment:

No separate measurement or payment will be made for meeting requirements of this Section. All work and materials are incidental to paid work in this contract.

811 SURFACE MAINTENANCE

811.01 Service Required:

This work consists of maintaining and shaping native or aggregate surfaced roads to a condition to facilitate traffic, provide proper drainage, including traveled way, shoulders, turnouts, intersections and compacting the surface in accordance with this specification. Reshape or recondition borrow ditches, rolling dips, and drain dips.

811.02 Performance Standards

A. Maintenance Level 4 and 5 Roads

A road surface is maintained to standard when the travel way is free of washboards, potholes, or other irregularities (ruts and rills). The surface is smooth, compact, crowned or sloped to drain, without segregation of the surfacing materials. Suitable materials have been recovered and incorporated, including berm of material. Remove berm of material that would concentrate run-off without disturbing the original surface and drainage features. Unsuitable materials have been removed. Ditches and road surface drainage structures function efficiently. Unpaved shoulders are shaped to provide a smooth transition from the paved surface and drain efficiently.

B. Maintenance Level 3 Roads

A road surface is maintained to standard when the surface is compact, crowned, or sloped to drain, without segregation of the surfacing materials. The road surface has no ruts or rills, suitable materials have been recovered and incorporated, including berms of material. Remove berm of material that would concentrate run-off without disturbing the original surface and drainage features. Unsuitable materials have been removed. Ditches and road surface drainage structures (lead-out ditches, rolling dips, grade dips, etc.) function efficiently.

C. Maintenance Level 2 Roads

A road surface is maintained to standard when the surface is compacted, insloped or out sloped, shaped to drain, and where ditches and road surface drainage structures function efficiently. The road surface has no continuous ruts or rills, and no large concentrations of unsuitable materials remain. Incorporate suitable material from borrow ditches and lead-out drainage ditches into roadbed. Section 831 Ditch Maintenance is incident. User comfort and smoothness is not required. Focus work activity on drainage control and road template.

D. All Roads

When directed by the Contracting Officer to work in a weed infested area the contractor will be required to prevent spreading the infestation into un-infested areas by cleaning vehicles and equipment. The contractor will use wash stations approved by the Contracting Officer.

Routine Blading - Excess roadbed width shall be shaped only as needed to provide drainage away from the traveled way. Established grasses and other vegetation shall not be removed from the excess width except as incidental to providing drainage or unless otherwise provide in the contract.

The Contractor shall establish a blading pattern which provides a uniform driving surface, retains the surfacing on the roadbed and provides a thorough mixing of the materials within the completed surface width. Upon final blading, no disturbed rock shall protrude more than two (2) inches above the adjacent surface unless otherwise provided in the contract. Material not meeting this dimension shall be removed and placed outside the roadbed so as not to obstruct drainage ways or structures. This material may be scattered off the roadbed if there is free drainage.

Maintenance Level 2, 3 and 4 roads bladed under this section shall be compacted using Method A. Compaction Method A is considered incidental to blading. Compaction shall commence immediately following blading. Compaction methods are:

Compaction Method A: By breaking track while operating equipment on the bladed surface. Compaction shall cover the full width bladed surface.

Compaction Method B: 8-10 ton pneumatic, steel or equivalent vibrating roller, operated to cover the full width of the bladed surface two (2) times.

Roadway backslope shall not be undercut.

Intersections and drainage with side roads which are not closed or restricted to vehicular use shall be bladed to assure smooth transitions.

Field evidence of closure or restrictions shall be considered to be signed, earth berms or other closure devices placed to discourage or eliminate use by passenger cars. Also, roads listed for work under Sections 835 or 838 shall be considered restricted.

Cleaning of Structures - Materials resulting from work under this Section shall not be allowed to remain on or in structures, such as bridges, culverts, cattleguards, drainage dips, aprons, or flumes.

Scarification work shall consist of destroying or breaking up old or damaged chip seal and dust oil surfaces and the loosening of native and pit run surfaces for blading and reshaping the road surface. Scarification shall be accomplished by rippers spaced not more than 12 inches apart. Scarification shall not penetrate the aggregate base to the subgrade. Where aggregate base is 3 inches or greater in depth, the minimum scarification depth shall be 3 inches.

No measurement will be made under this Section for Compaction Method A. Measurement for Compaction Method B will be the same as stated in 811.04 (A) for blading.

Seeding

All disturbed areas shall be seeded and fertilized in accordance with requirements set forth in this section and are incidental to the pay item.

811.03 Location of Work

As specified on roads listed on the road listing, shown on the plans, marked on the ground, or as directed by the Contracting Officer. Locations of weed infested areas are marked on the ground. Do not operate in the weed infested areas unless directed to do so by the Contracting Officer.

811.04 Measurement

Measurement under this Section will be made by the total number of units for each item listed in the SCHEDULE OF ITEMS completed and accepted.

A. Single Lane Roads: Surface maintenance will be measured along the centerline of the roadway. Turnouts are incidental. Measurement will be to the nearest one-tenth (0.1) mile.

B. Double Lane Roads: Surface maintenance will be measured along the centerline of the roadway. Measurement will be to the nearest one-tenth (0.1) mile.

C. Mile: Work activity will be measured along the centerline of the road regardless of the number of lanes.

D. 1000/gal.: Water will be measured by the known capacity of the tank, as per manufacturer’s specifications, the distributors or the accurate water meters.

811.05 Payment

The accepted quantities will be paid at the contract price per unit of measurement for the Section 811 pay items listed in the schedule of items. Payment will be full compensation for the work prescribed in this Section.

Pay Item

Pay Unit

811(1)

Water

1000/gal.

811(2)

Surface Maintenance Level 4 & 5 roads

Mile

811(3)

Surface Maintenance Level 3 roads

811(4)

Surface Maintenance Level 2 roads

811.06 Acceptable Quality Levels

Defect Minor Defect Required Action

Washboards greater than 1" deep

Washboards greater than 1" deep

Defect Minor Defect Required Action

Material greater than 1/4" diameter remaining on the road surface

*Forests has the option to choose a pay reduction in lieu of rework. However, each Forest must establish a threshold where rework is required and defined pay reduction for each defect.

813 SPOT SURFACING

813.01 Service Required:

For use when limited amounts of aggregate are needed to maintain or protect the road and provide for passage of traffic. The prescribed spot surfacing is not to provide continuous surfacing. The intent of this specification is to replace previously existing surfacing materials, not to place new surfacing on roads or portions of road that have not previously been surfaced. Should not require a crushing setup for this amount of material.

Materials transported onto National Forest System land shall be free of invasive species of concern. Written documentation of methods used to determine the invasive species of concern free status of any and all materials furnished by the Contractor.

The Contracting Officer shall have 5 days, excluding weekends and Federal holidays, to review the methods and inspect the materials after the required written documentation is provided by the Contractor. After satisfactory review and inspection or after such 5 day period, the Contractor may transport the material onto the National Forest System land.

Furnish, load, haul, and place surface material to repair or stabilize road surfaces and/or roadsides as staked on the ground, designated by the Government, or as SHOWN ON PLANS OR DRAWINGS. Spot Surfacing includes preparing the area, furnishing, hauling, and placing all necessary material and other work necessary to blend with the adjacent road cross section.

Furnish geogrids consisting of polymeric materials such as polypropylene, polyethylene, or polyester formed into a stable network of bars or straps fixed at their junctions such that the bars retain their relative position to each other. Ensure that the geogrid is treated to resist ultraviolet degradation, and that it conforms to the physical strength requirements shown in Table 714-7 in accordance with ASTM D 4595.

Table 714-7. - Physical strength requirements for geogrids.

(lb/ft) Minimum Ultimate Strength at Breakage

(lb/ft)

Furnish the CO with a certificate signed by a legally authorized official from the company that manufactured the geogrid. Ensure that the certificate attests that the geogrid meets the chemical, physical, material, and manufacturing requirements stated in the specification. When requested by the CO, furnish a sample of the geogrid from each lot for verification testing.

During shipment and storage, wrap the geogrid in a heavy-duty protective covering. Protect the geogrid from mud, soil, dust, debris, and sunlight prior to installation.

Ensure that the geogrid meets the minimum average roll values for the wide-width strip tensile strength tests performed in accordance with ASTM D 4595 for the category SHOWN ON THE DRAWINGS. Provide test results to the CO prior to incorporating the geogrid into the work.

Ensure that the aperture size for all geogrids is from 7/8 inch to 3 inches. Square and rectangular openings are permitted. Strengths shown in Table 714-7 are for both the machine and cross directions 813.02

Aggregate Gradation The upper and lower specification limits for aggregate gradation are equal to the calculated mean of all test results plus or minus the allowable deviations shown in Table FP-14 703-3, except as follows:

A. Materials furnished by the Contractor shall conform to the gradation and quality requirements of Section 703 of the “Standard Specifications for the Construction of Roads and Bridges on Federal Highway Projects FP-14”.

B. If the calculated mean value for any tested sieve exceeds the maximum gradation value shown in FP-14 Table 703-3 (minus 1”), the upper specification is equal to the maximum gradation value plus the allowable deviation, and the lower specification is equal to the maximum gradation value minus the allowable deviation.

C. If the calculated mean value for any tested sieve is less than the minimum gradation value shown in Table FP-14 Table 703-3, the upper specification is equal to the minimum gradation value plus the allowable deviation and the lower specification is equal to the minimum gradation value minus the allowable deviation.

813.03

Performance Standard:

Spot Surfacing is complete when the designated quantity of the ordered material has been placed (See Table 813-1 Acceptable Quality Levels).

A. Spot Surfacing for 1 ½” minus (Gradation “C”, Table 703-2), ¾” minus, and Pit Run.

1. Thoroughly scarify the area to be spot surfaced to a minimum depth of 1 inch prior to placement of aggregate. This work shall be considered incidental to this pay item and no further compensation shall be given.

2. Mixing and Spreading.

Do not place the aggregate in a layer exceeding 6 inches in compacted thickness. When more than one layer is necessary, compact each layer according to Section 3 before placing the next layer.

After placing the aggregate for each layer, mix it with other required and suitable 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 or geogrid, place aggregate in a single lift to the full depth specified.

3. Compaction shall be accomplished by using Method A. Compaction Method A is considered incidental. Compact 1 ½” minus, ¾” minus, and Pit Run. Compact the aggregate by operating spreading and hauling equipment over the full width of each layer of aggregate on the surface to minimize rutting or uneven compaction, until visual displacement ceases or as directed by the Contracting Officer’s Representative.

813.04 Location of Work

As specified on roads listed on the ROAD LISTING, SHOWN ON THE PLANS, or as directed by the Contracting Officer.

813.05 Measurement

Measurement under this Section will be made by the total number of units for each item listed in the SCHEDULE OF ITEMS complete and accepted.

A. The quantity will be the number of cubic yards measured, compacted in placed OR the number of tons measured by certified weigh scales.

B. Haul quantities are incidental and included in material measurement.

C. The quantity will be the number of cubic yards measured in the vehicles, or square yards of aggregate placed, or tonnage verified by weight slips whichever is shown in the Schedule of Items.

D. Hauling is considered incidental when materials are furnished by the Contractor and when the haul distance is less than one (1) mile for Government furnished materials. When the haul distance exceeds one (1) mile for Government furnished materials haul will be ordered and paid under 832(3).

813.06 Payment

A. The accepted quantities will be paid for at the contract unit prices designated in the SCHEDULE OF ITEMS.

B. Payment will be made under:

813(1)

Spot Surfacing, 1 ½” Minus

Cubic Yard

813(2)

Spot Surfacing, ¾” Minus

813(3)

Spot Surfacing, Pit Run

813(4)a

Place ___Rolls of Geotextile

Lump Sum

813(4)b

Place ___ Rolls of Geogrid

Lump Sum Table 813-1

Acceptable Quality Levels

*Forests have the option to choose a pay reduction in lieu of rework. However, each Forest must establish a threshold where rework is required and defined pay reduction for each defect.

814 ASPHALT PAVEMENT PATCHING

1.

DESCRIPTION

This work consists of patching potholes, deep patching of asphalt surfaces, and skin patching of asphalt surfaces. The work includes preparing the area to be patched, furnishing and placing all necessary materials and work. All areas to be patched will be marked by the Government.

2.

MATERIALS

Materials used for asphalt patching shall conform to the requirements in Sections 892.

3.

MAINTENANCE REQUIREMENTS

a.

Deep Patching

Existing materials shall be removed to a minimum of two (2) inches below the bottom of the asphalt surfacing or as necessary to reach firm support, but limited to a maximum depth of eighteen (18) inches. If firm support for a patch is not available, the hole shall be barricaded and the Government shall be notified. Prior to the Contractor placing any materials, the Government will decide on any corrections to be made.

2.

The edges of the prepared hole shall be extended to form a vertical face of unfractured asphalt surfacing. The prepared hole shall be rectangular in shape and cleaned of all loose material. The prepared area shall be backfilled with crushed aggregate base material in layers not to exceed six (6) inches in depth, compacting each layer with mechanical equipment designed for this purpose. Compaction shall continue until visual displacement ceases. Backfilling shall continue to a depth of four (4) inches from the top of the existing asphalt surface. The bottom and faces shall be sprayed with an emulsified asphalt.

3.

Prepared holes shall be patched or barricaded immediately.

4.

The cold bituminous mixture shall be placed in layers not exceeding four (4) inches. Each layer shall be compacted thoroughly with hand tampers, mechanical tampers, or rollers.

5.

Finished surface shall be compacted with an eight (8) to ten (10) ton steel roller or comparable vibratory roller. Upon completion, the compacted patch shall be flush with or not more than one quarter (1/4) inch above the level of the adjacent pavement.

b.

Skin Patches

1.

Prior to skin patching, potholes shall be patched.

2.

Minor depressions, light ravelling, or surface checking at scattered locations marked on the ground shall be treated by applying a skin patch.

3.

Prior to skin patching, the surface shall be cleaned of loose and deleterious material, then sprayed with emulsified asphalt at the rate of 0.1 gallons per square yard. The emusified asphalt tack coat will be considered incidental to the patching materials. No bituminous mixture shall be placed until the prepared surface is approved by the Government.

4.

Cold bituminous mixture shall be distributed uniformly in layers not to exceed two (2) inches compacted depth. When multiple layers are ordered, joints shall be offset at least six (6) inches between layers.

5.

Each layer shall be compacted with an eight (8) to ten (10) ton steel roller or comparable vibratory roller.

6.

The completed patch shall not have abrupt transitions which adversely affect the steering of a passenger car. The surface must be at least as smooth as the adjacent pavement after twenty-four (24) hours of exposure to traffic.

c.

Potholes

1.

Surfacing material, loose aggregate, and other debris shall be removed from potholes prior to patching.

2.

The cleaned pothole shall be sprayed with emulsified asphalt.

The prepared pothole shall be filled with a hard setting cold bituminous mixture and compacted with hand tampers, mechanical tampers, or wheel rolled by deliver vehicles. The finished patch shall not protrude more than one half (1/2) inch above the adjacent surface.

d.

Disposal

All materials removed from potholes, patches, and berms shall be disposed of in areas designated by the Government.

MEASUREMENT

a.

Bituminous Mixture

1.

Cold bituminous mixture acceptably placed will be measured by the ton for Pay Items 814(2) and by the square yard for Pay Items 814(1) and 814(3). Bituminous materials incorporated into the mixture will be incidental to the item.

2.

Ton Measure - The quantity of mixture will be the number of tons in the accepted work. Any material rejected in the field as not meeting specifications shall be deducted based on estimated quantities. Rejected quantities shall be reconciled between the Government and the Contractor each day. If not reconciled each day, the Government's figures will apply.

b.

The following work and materials are incidental:

Cleaning of surfaces.

2.

Haul and compaction of bituminous mixture.

Material removal and disposal.

Emulsified asphalt for tack coat.

5.

Crushed aggregate backfill material.

5.

PAYMENT

a.

The accepted quantities will be paid for at the contract unit price shown in the Schedule of Items.

Payment will be made under:

814(1) Deep Patching Square Yard

814(2) Skin Patching Ton

814(3) Pothole Patching Square Yard

815 PAVED SURFACE CLEANING

1.

DESCRIPTION

This work consists of removing loose material from paved traveled ways, including bridge decks and paved shoulders.

2.

EQUIPMENT

a.

Equipment shall have the capability of removing all loose material from paved surfaces without damage to the surface.

b.

Use of hydraulic flushing equipment will not be permitted within a horizontal distance of two hundred (200) feet from a live stream, unless approved by the Government.

3.

MAINTENANCE REQUIREMENTS

The paved surface shall be cleaned to the width stated in 4(a) or 4(c) for the Pay Item or as ordered under 4(b). Materials shall be moved away from road centerline on double-lane roads. Bridge deck cleaning shall require all materials be moved off the deck and disposed of at a designated site.

4.

MEASUREMENT

a.

Measurement for Pay Item 815(1), will be by the pass mile, determined by the product of the number of five (5) foot wide increments times the length to the nearest one-tenth (0.1) mile.

b.

Partial width passes ordered under Pay Item 815(1) will be measured as full five (5) foot passes. Additional width incidentally produced by Contractor's equpment will not be considered as a partial pass.

c.

Measurement for Pay Item 815(2) will be single lane miles measured to the nearest one-tenth (0.1) miles for cleaning the entire width of the paved surface, including turnouts.

d.

Measurement for Pay Item 815(3) will be for cleaning the entire length and width of the surface of each bridge and paved approaches.

5.

PAYMENT

a.

The ordered and accepted quantities shall be paid for at the unit price shown in the Schedule of Items.

b.

Payment will be made under:

815(1) Paved Surface Cleaning Pass Mile

815(2) Paved Surface Cleaning Single Lane

815(3) Bridge Deck Cleaning Each

816 MAINTENANCE OF UNPAVED SHOULDERS

1.

DESCRIPTION

This work consists of maintaining unpaved shoulders adjacent to a paved traveled way. Work will be Marked on the Ground.

2.

MAINTENANCE REQUIREMENTS

Existing shoulder material shall be bladed and shaped the entire width to drain away from the traveled way. Vegetative or other unsuitable materials may be bladed onto slopes adjacent to the roadbed. The shoulder material shall be moistened as necessary for compaction. The shoulder shall be compacted adjacent to paved surface edge prior to final shaping. Grader wheels may be used for this compaction. Final shaping shall provide a smooth transition to the paved surface edge. Upon completion, the paved surface shall be cleaned of loose materials in accordance with Section 815 and is incidental.

3.

MEASUREMENT

Measurement of unpaved shoulder maintenance will be the number of side miles of each shoulder completed and accepted. Measurement will be to the nearest one-tenth (1/10) mile determined along the centerline.

4.

PAYMENT

a.

The accepted quantities shall be paid for at the contract unit price shown in the Schedule of Items.

816(1) Unpaved Shoulder Maintenance Side Mile

819 RIPRAP

1.

DESCRIPTION

This work shall consist of furnishing, hauling and placing erosion resistant and protective materials for use on embankments, streambanks, culvert inlets and outlets, channel bottoms and side slopes, abutment wings, structure foundations, and other designated locations.

2.

EQUIPMENT

All methods employed in performing the work and all equipment, tools and machinery used for handling the material and executing any part of the work shall be subject to the approval of the Government before the work is started, and whenever unsatisfactory, they shall be changed or improved as required.

3.

MATERIALS

Unless shown in the Schedule of Items, all materials shall be furnished by the Contractor and shall meet the following requirements:

a.

Riprap

Rock used for riprap shall be hard angular rock with a Durability Absorption Ratio greater than 23 or between 10 – 23 if the Durability Index is greater than 52.

Durability Absorption Ratio = Durability Index (Course) AASHTO T 210

Percent Aborption + 1 AASHTO T 85

Neither the breadth nor thickness of any piece of riprap shall be less than one-third its length. Rock shall be free from overburden, spoil, shale, and organic material; shall meet the following gradation requirements for the class specified; and shall be delivered to designated locatons.

Rock for grouted riprap shall be free of fines that prevent penetration of grout.

Size of Rock

(Pounds)

Percent of Total Weight

Smaller Than the Given Size

Class I

Class II

Size of Rock

(Pounds)

Percent of Total Weight

Smaller Than the Given Size

Class III

Class IV

Class V

Class VI

1,600

Class VII

2.700

1,600

Class VIII

4,000

2,000

Class IX

6,000

3,000

1,000

Each load of riprap shall be well graded from the smallest to the maximum size specified.

b. Grout

Grout for riprap shall be delivered to designated sites. Grout for riprap shall consist of concrete containing 5 sacks of cement per cubic yard, aggregate with a maximum size of ¾ inches, and water limited to that necessary to ensure good workability. Reasonably clean and strong aggregate of appropriate size gradation, as approved by the CO, shall be used.

A water reducer, set retarder shall be submitted for approval and will include recommended dosage for 2, 3, and 4 hour hauls.

4.

MEASUREMENT

The quantity will be the number of cubic yards measured in the hauling vehicles, or tonnage verified by certified weight slips whichever is shown in the Schedule of Items.

Hauling is considered incidental when materials are furnished by the Contractor and when the haul distance is less than one (1) mile for Government furnished materials. When the haul distance exceeds one (1) mile for Government furnished materials haul will be ordered and paid under 832(3).

Application of grout will be measured by the hour for mixer truck standby starting when application begins. On site mixing and setup will be considered incidental to grout cost.

6.

PAYMENT

The accepted quantity will be paid for at the contract unit price shown in the Schedule of Items.

The loading and hauling of Govermnet furnished riprap will be paid for under Section 832.

Payment will be made under:

Pay Item Pay Unit 819(1)a Riprap, Class I & II Ton

819(1)b Riprap, Class III & V Ton

819(1)c Riprap, Class VI & IX Ton

819(2) Riprap, Government Furnished Cubic Yard

819(3) Grout Cubic Yard

819(4) Grout Application Hour

831 DITCH MAINTENANCE

831.01

Description

This Section provides for routine maintenance of various types of ditches to provide a waterway which is unobstructed, as shown on the road listing or marked on the ground. Drainage ditch maintenance is limited to materials contained within the ditch below the elevation of the adjacent edge of the traveled way or shoulder.

831.02

Maintenance Requirements

A. Retain existing low-growing vegetative cover (primarily grasses and forbs).

B. Maintain ditches by removing rock, soil, wood, and other materials. Maintained ditches shall function to meet the intent of the original design. Upon completion the maintained ditch shall be of the same character as abutting segments that were not required to be maintained.

C. Undercutting backslopes during removal operations is not permitted.

D. Suitable material up to 4 inches in greatest dimension removed from the ditches may be blended into existing native road surface and/or shoulder.

E. Do no blend material from ditch cleaning operation into, or blade across aggregate-surfaced roads or bituminous-surfaced roads.

F. Material in excess of 831.02 D or subject to 831.02 E shall be removed and placed outside the roadbed so as not to obstruct drainage ways or structures.

G. Remove limbs and woods chunks in excess of 12 inches in length or 3 inches in diameter from ditches and place outside the roadway.

H. Clean paved surface of all materials resulting from ditch maintenance work. Clean paved surface in accordance with Section 815.

I. Shape lead-off ditches to drain away from the traveled way and ditch to drain.

J. Vegetation, brush and trees one (1) inch in diameter or smaller shall be removed as incidental to Item 831(1). Brush and trees larger than one (1) inch and less than six (6) inches in diamenter shall be removed and paid for under Item 831(3). Trees six (6) inches and larger in diameter shall be removed and paid for under Item 831(4). Removed brush and trees shall be cut into lengths of four (4) feet or less and scattered on the fill slopes or outside the roadway limits. Concentrations of material will not be allowed. If ordered, materials shall be hauled and disposed of in accordance with Section 832.

831.03

Measurement

A. Drainage ditch maintenance will be measured to the nearest one-tenth (0.1) of a mile. Segments of less than one-tenth (0.1) mile will be counted as a full one-tenth (0.1) mile. Lead-off ditches are measured by the number of ditches completed.

B. Haul of excess material will be measured and paid under Section 832.

831.04

A. The accepted quantity will be paid for at the contract unit price designated in the SCHEDULE OF ITEMS.

831(1) Clean and Reshape Drainage Ditch

Ditch Mile

831(2) Clean and Reshape Lead-off Ditch

Each

831(3) Remove Vegetation Larger Than 1" Ditch Mile and Less Than 6" in Diameter

831(4) Remove Vegetation 6" and Larger Each

832 REMOVE AND END HAUL MATERIALS

832.01 Description

Work consists of specified or directed loading, hauling, and placing of slide, slough or excess materials such as rock, soil, vegetation, and other materials to designated disposal sites.

832.02 Maintenance Requirements

A. Remove, end haul, and dispose of slide material and excess materials generated by work under other sections of the contract. Haul will not be paid separately when a distance of less than 200 feet is involved.

B. Slide and slough materials to be removed includes those in the area extending approximately 6 feet vertically above the road surface and that area extending not more than 3 feet downslope from the roadbed. Dispose of material at locations designated on the ground.

Reshape the slope that generated the slide material as nearly as practical to its original condition by equipment operating from road surface. Reshaping of roadside ditches in slide area shall be in accordance with Section 831.

C. When ordered by the Government, fill slumps by compacting selected materials in roadway depressions. Compaction method is by Method 2.

D. Place all materials in disposal sites by one or more of the following methods as SHOWN IN ROAD LISTING.

1. Method 1 – Side casting and end dumping - Material may be placed by side casting and end dumping. Where materials include large rocks, provide a solid fill by working smaller pieces and fines into voids. Shape the finished surfaces to drain.

2. Method 2 – Layer Placement - Step or roughen surfaces on which materials are to be placed prior to placing any material. Place materials in approximately horizontal layers no more than 12 inches thick. Compact each layer by operating hauling and spreading equipment over the full width of each layer.

E. Repair any negligent damage to existing aggregate or pavement surfaces.

832.0 3

Measurement

A. Removal will be measure by the cubic yard, determined by equipment measure, for materials acceptably removed and placed.

B. Road disposal will occur on the road in which the haul distance for removal is not greater than 0.5 miles.

C. Except as provided in 2(a) of this Section, haul of materials will be measured by the cubic yard mile, determined by the number of miles hauled times the cubic yards. Mileage will be measured one way rounded to the nearest 1/10 mile.

832.04 Payment

A. The accepted quantity will be paid at the contract unit price shown in the SCHEDULE OF ITEMS.

832(1) Remove & Dispose, Placement Method 1

832(2) Remove & Dispose, Placement Method 2

832(3) Haul Yard Mile

832(4) Compaction Method B Cubic Yard

832.06 Acceptable Quality Levels

Placed Material

(Disposal Sites)

*Forests have the option to choose a pay reduction in lieu of rework. However, each Forest must establish a threshold where rework is required and defined pay reduction for each defect.

833 DRAINAGE STRUCTURE INSTALLATION OR REMOVAL

833.01 Service Required

Install or remove drainage structures including culverts, rolling dips, drivable drain dips, cross ditches and lead-off ditches.

Install new rolling dips or reconstruct existing rolling dips as SHOWN ON THE DRAWINGS.

Install new culverts as SHOWN ON THE DRAWINGS.

833.02 Performance Standard

A. Drainage structure installation is complete when culverts, rolling dips, drivable drain dips and cross ditches have been installed to the lines and grades specified, and drainage structure removal is complete when designated culverts, rolling dips and cross ditches have been removed and culverts have been properly disposed of, as further detailed in individual task orders.

B. When installing new culverts, payment for culvert excavation, building the catch basin and lead-off ditches are incidental.

C. Furnish and install metal pipe and pipe appurtenances, including all bedding and backfilling required to complete the work. The term “metal” refers to aluminum and steel. Either annular or helical pipe corrugations will be acceptable. Helical corrugated pipe containing annular rerolled ends may be used in conjunction with annular pipe of like or compatible materials. Provide fabricator’s certificate that the sheet and pipe fabrication are in accordance with AASHTO M 36, m 196 and M 245, as applicable. Submit the certification before installing the pipe.

D. Replace any pipe that is distorted by more than 5 percent of nominal dimension, or that is ruptured or broken.

E. Armored rolling dips shall have 6 inch minus (6”-) fractured aggregate for a depth of 6 inches to 12 inches.

F. Excavation for culverts shall be at least as wide as three diameters of the existing pipe, and long enough to provide for proper joining of the culvert. The completed bottom shall be firm for its entire length and width. The culvert shall be installed to maintain a uniform flow line from inlet to outlet, with a positive camber in the invert. See Drawings for Culvert Installation details.

G. Pipe sections shall be joined firmly by form-fitting coupling bands. End sections shall be attached to pipe by connecting bands or other means recommended by the manufacturer. Gaskets shall be installed at each joint to form a watertight connection.

H. After the bedding is prepared and the pipe is placed, backfill material shall be placed in layers not exceeding six (6) inches loose thickness and compacted under the haunches and alongside the pipe. The material shall be readily compactible material free of frozen lumps, chunks of highly plastic clay or other objectionable material. Rocks larger than three (3) inches in greatest dimension shall not be used within one (1) foot of the pipe.

I. Backfill density shall be that obtained by compacting each layer with mechanical equipment designed for this purpose. Compaction shall continue until visual displacement ceases.

J. Backfill shall continue for a minimum of twelve (12) inches above the top of the culvert. Compaction shall continue to finished grade.

K. Culverts with cover exceeding seven (7) feet from the bottom of the pipe to the top of the fill or at locations requiring dewatering shall not be replaced under this section.

L. Removed culverts and appurtenances become the property of the Contractor and shall be disposed of off of Government land. Disposal of removed culverts and appurtenances is considered incidental to the work in this specification.

833.03 Location of Work

As specified on roads listed on the ROAD LISTING, SHOWN ON THE PLANS, or as directed by the Contracting Officer.

833.04 Measurement

Measurement under this Section will be made by the total number of units for each item listed in the SCHEDULE OF ITEMS completed and accepted.

A. Mile: Work activity will be measured along the centerline of the road regardless of the number of lanes.

B. Linear Foot: Work activities by the linear foot will be measured using standard survey methods rounded to the nearest one (1) foot. Culvert bands are incidental to the installation. Measure culverts by the linear foot along the invert.

833.05 Payment

A. The accepted quantities will be paid…