7. Specifications.pdf

805 MOBILIZATION / EQUIPMENT MOVING (10/16)

1. DESCRIPTION

This Section consists of one or more mobilizations of personnel, equipment, supplies, and incidentals to the project site, or sites listed in the Schedule of Items.

2. REQUIREMENT

a. Make equipment available for inspection before it is used on National Forest System lands.

b. Moving is complete, when the contractor has moved from the present work site to the ordered work site and returned to the previous location.

c. Equipment will be clean and weed free before it arrives on National Forest System lands.

3. LOCATION OF WORK

As specified on roads listed on the Road Listing, Shown on the Plans, or as ordered by the

Contracting Officer.

4. 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.

Mile: work activity will be measured along the shortest feasible route to the nearest one (1) mile, from the starting location of the move, to the ordered work site.

5. PAYMENT

a. The accepted quantities will be paid at the contract price per unit of measurement for the

Section 805 pay items listed in the schedule of items. Mobilization is complete when all equipment, personnel, and materials are moved to the project site and work has been started. Payment will be full compensation for the work prescribed in this Section.

Mobilization is incidental unless ordered for a specific project at a specific time.

b. Payment will be made under:

Pay Item Description Pay Unit

805 (1) Mobilization Mile

811 BLADING (2/99)

This work consists of surface blading native or aggregate roads to a condition to facilitate traffic and provide proper drainage. Blading includes shaping the crown or slope of traveled way, maintaining berms and drainage dips, and compacting the surface in accordance with this specification.

2. MAINTENANCE REQUIREMENTS

a. Timing

Surface blading shall be performed during the contract period as ordered by the Government.

b. General

1. The existing traveled way and shoulders, including turnouts unless otherwise ordered, shall be bladed and shaped to produce a surface which is uniform, consistent to grade, and crowned or cross-sloped as indicated by the character of the existing surface unless otherwise Marked on the Ground, to at least one half inch (1/2") per foot of width, but not more than three quarter inch (3/4") per foot of width. Surfacing materials shall be thoroughly loosened to a depth of no less than 2 inches or the depth of potholes or corrugations. Corrugations are washboarding and similar defects.

Scarification to facilitate cutting to the full depth of potholes or corrugations may be elected by the Contractor but will be considered incidental to blading. Scarification shall not go deep enough to cause contamination of the surfacing.

2. When Section 891 is included in the Road Listing, the Contractor shall apply water during blading when sufficient moisture is not present to prevent segregation.

Water supply, hauling, and application shall be in accordance with Section 891 and shall be incidental to blading unless Pay Items for Section 891 are included in the Schedule of Items.

3. Existing native, rock or aggregate surfaced drainage dips shall be cleaned and shaped incidental to blading to divert surface runoff to existing outlet devices, ditches and discharge locations.

4. 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.

c. Routine Blading

1. 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 provided in the contract.

d. Compaction

All 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.

e. Intrusions

Where the minimum width of 12 feet is not available, the Contractor shall construct berms where ordered and marked on the ground. Material to provide berms will come from sources designated by the Government.

f. Undercutting

Roadway backslope shall not be undercut.

g. Intersections

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

2. Field evidence of closure or restrictions shall be considered to be signing, cross ditching in the road surface (traveled way), earth berms or other devices placed to discourage or eliminate use by passenger cars. Also, roads listed for work under Sections 835 or 838 shall be considered restricted.

3. Side roads listed for work under this Section shall be considered as not restricted.

h. 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.

i. Berms

Existing berms shall be maintained to the condition of adjacent segments when ordered by the Government.

j. Scarification

1. This 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.

2. Scarification shall be accomplished by rippers spaced not more than 12 inches apart.

3. Scarification shall not penetrate the aggregate base to the subgrade. Where aggregate base is 3 inches or greater in depth, the minimum scaification depth shall be 3 inches.

3. 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. Measurement for blading will be single-lane mile measured along the centerline of the roadway (see quantity measurement terms). Two-lane roads will be measured as two (2) single-lane miles. Measurement will be to the nearest one-tenth (0.1) mile.

b. Each intersection bladed under 2.g. will be equivalent to one-tenth (0.1) single-lane mile; however, when the intersecting side road is scheduled for subsequent blading under this Section, no measurement will be made.

c. Berm maintained or established will be measured by linear foot.

d. No measurement will be made under this Section for Compaction Method A.

Measurement for Compaction Method B will be the same as stated in 3.a for blading.

4. PAYMENT

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

b. Payment will be made under:

Pay Item Pay Unit

811(1) Blading Surfaced Roads Mile 811(2) Blading Native and Pit Run Roads Mile 811(3) Berm Maintained Mile 811(4) Establishing Berms Mile 811(5) Compaction - Method B Mile 811(6) Scarification Pass Mile

834 DRAINAGE STRUCTURE MAINTENANCE (10/16)

This work consists of cleaning and reconditioning culverts and other drainage structures.

2. MAINTENANCE REQUIREMENTS

a. Drainage structures, inlet structures, culverts, catch basins, and outlet channels shall be cleaned when required by the Government. Catch basins shall be cleaned by removing the material within the area shown on Drawing 834-1.

b. The transition from the ditch line to the catch basin shall be cleaned a distance of ten (10) feet. Outlet channels and lead-off ditches shall be cleaned a distance of six (6) feet.

Debris and vegetation shall be removed and placed so as to not enter the channel or ditch or obstruct traffic. Debris and vegetation ordered to be hauled shall be hauled to a designated disposal area in accordance with Section 832.

c. Hydraulic flushing of drainage structures is not allowed unless provided for in Special

Project Specifications.

d. Cleaning and reconditioning is limited to the first four (4) feet of inlet and outlet determined along the top of the structure. Damaged culverts shall be reported to the Government in writing upon completion of work on each road in the Road Listing. Any damaged by the

Contractor shall be repaired.

3. MEASUREMENT

a. Measurement will be the number of units of each culvert type including cleaning of inlet and outlet ditches or channels and catch basins completed and accepted.

b. Reconditioning and cleaning of drainage structures will be incidental to cleaning.

c. Ordered haul of materials will be measured under Section 832.

4. PAYMENT

a. Quantities as determined above will be paid at the contract unit price.

b. Payment will be made under:

Pay Item Description Pay Unit

834 (1) Clean Culverts 24" Diameter and Under Each

834 (2) Clean Culverts 24" through 48" Diameter Each

834 (3) Clean Culverts Over 48" Diameter Each

839 RESTORE DRAINAGE (10/16)

This work consists of log, limb and debris removal; blading and shaping of the roadbed to restore drainage function. This work includes shoulders, ditches, drainage dips, leadoff ditches, turnouts, and intersections; cleaning drainage facilities; removing washes and sloughs that inhibit drainage.

2. MAINTENANCE REQUIREMENTS

a. General

The existing traveled way and shoulders, including turnouts unless otherwise ordered, shall be bladed and shaped to produce a surface which is uniform, consistent to grade, and crowned or cross-sloped as indicated by the character of the existing surface unless otherwise Marked on the Ground, to at least one half inch (1/2") per foot of width, but not more than three quarter inch (3/4") per foot of width. Surfacing materials shall be thoroughly loosened to a depth of no less than 2 inches or the depth of potholes or corrugations.

Corrugations are washboarding and similar defects.

Scarification to facilitate cutting to the full depth of potholes or corrugations may be elected by the Contractor but will be considered incidental to blading. Scarification shall not go deep enough to cause contamination of the surfacing.

When Section 891 is included in the Road Listing, the Contractor shall apply water during blading when sufficient moisture is not present to prevent segregation. Water supply, hauling, and application shall be in accordance with Section 891 and shall be incidental to blading unless Pay Items for Section 891 are included in the Schedule of Items.

Existing native, rock or aggregate surfaced drainage dips shall be cleaned and shaped incidental to blading to divert surface runoff to existing outlet devices, ditches and discharge locations.

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.

b. Drainage Facilities

Cleaning existing drainage facilities includes roadside drainage ditches, drainage dips, inlet and outlet ditches, overside drains and flumes, inverts and interiors of culverts, culvert catch basins, drop inlets, trash racks, and sediment basins. Slash and debris shall be disposed of as in 839e. Sediment basin clean out shall be disposed for the unit price as shown in the

Schedule of Items for Section 832.

Drainage structures not included under this specification are bridges, cattle guards, and culverts over 72 inches in diameter.

c. Ditches, Lead Off and Roadside

Wood, rock, trees, brush and other debris shall be removed from ditches to provide unobstructed flow of water. Slash and debris (woody or organic) shall be scattered in such a manner as not to impede the flow of water. The backslope of ditches shall not be undercut by cleaning operations. Existing ditch blocks shall be restored, reshaped, and compacted as needed for effective drainage through culverts. Catch basins shall be cleaned of material above the invert of the culvert.

d. Dips (Also called intercepting dips or rolling dips)

Existing drainage dips shall be cleaned and the outslope gradient sufficiently restored to remove surface water from roadbed, conducting the water through drainage facilities.

e. Culverts

Inlet and outlet ends, as well as four feet inside each end, of existing culvert, shall be cleaned to provide unobstructed flow of water. Natural drain culvert channels shall be cleared of all down trees, limbs, stumps, brush, rocks and other debris, that restricts the flow of water, 6 feet in width for 15 linear feet at each end. Slash and debris (woody or organic) shall be scattered in such a manner as not to impede the flow of water. The channel shall be shaped to natural streambed with constant grade at inlet and outlet ends.

f. Overside Drains and Flumes

Overside drains shall be cleaned of debris to provide an unobstructed flow of water. Debris

(woody or organic) shall be scattered in such a manner as not to impede the flow of water.

g. Designed Earth Berms

Berm breaches of less than 5 cubic yards shall be filled, shaped, and compacted by wheel rolling. Fill material shall be located within 500 feet of breach or by ripping to the depth and width necessary to obliterate such defects; providing a smooth transition to adjacent satisfactory roadbed. Filling with loose material will not be acceptable.

h. Settlements

Settlements 12 inches or less in depth shall be scarified and then repaired by cutting from the roadbed on each end of the settled area, filling and wheel rolling the material into the settled area providing a smooth transition to adjacent satisfactory roadbed.

i. Washouts

Washouts in roadway of less than five cubic yards shall be filled and compacted by wheel rolling. Fill material shall be located within 500 feet of washout or as directed by the

Contracting Officer.

3. METHOD OF MEASUREMENT

Measurement for maintenance will be “by the mile”, measured by slope distance along the centerline of the roadway. Measurement will be to the nearest one-tenth mile. No separate measurement will be made for any of the elements of work described in the foregoing

4. PAYMENT

a. Payment will be made for all units inspected and accepted at the unit price shown on the schedule of items.

b. Payments will be made under:

Pay Item Description Pay Unit

839 (1) Restore Drainage Function, Without Water Mile

839(2) Restore Drainage Function, With Water Mile

840 CORRUGATED METAL SPILLWAYS AND FLUME (10/16)

This work consists of cleaning, reconditioning, and re-installing, or the replacement of existing corrugated metal spillway inlet assemblies, flume, and other appurtenances associated with the installation requirements.

2. MATERIALS

a. Materials shall be furnished by the contractor, unless otherwise indicated. Spillway inlet assemblies, flume, and connectors shall be of the type and thickness specified by the Task

Order or shown in supplemental drawings, and shall be constructed of galvanized corrugated sheet metal meeting the requirements indicated on the drawings.

b. Anchors shall be as shown in the Task Order.

3. MAINTENANCE REQUIREMENTS

a. Re-installation of existing overside drains:

1) Re-install inlet and starter section to the grade and flow line established by the drainage dip.

2) Adjacent earth berms shall be filled shaped, and compacted to provide a continuous drainage channel to the inlet structure.

3) Structures not approved for reuse shall be removed from Government land at the

Contractor’s expense.

4) Prior to re-installing flume, ensure that voids have been filled and the embankment compacted to provide a smooth, continuous grade from the inlet to the outlet of drainage structure.

b. Replacement of existing overside drains:

1) Remove existing structure and backfill and compact any wash-outs beneath the inlet and starter.

2) Re-establish the embankment for flume replacement by backfilling wash-outs and voids, and compacting to provide a smooth, continuous grade from the inlet to the outlet of the drainage structure.

3) Install new drainage structure as specified by the Task Order.

4) Re-establish earth berm. Shape and compact to provide a continuous drainage channel to the inlet of the drainage structure.

4. MEASUREMENT

a. Measurement of inlet and starter assemblies will be for each unit specified and installed as a whole. Costs included are for materials, labor for fabrication and installation, and delivery.

b. Measurement will be made for each lineal foot of flume specified and installed. Measurement for anchors shall be considered incidental to flume installation.

c. Cost for disposal of removed inlets, starters, flumes, and appurtenances shall be considered incidental to the work in this specification.

5. PAYMENT

a. Accepted quantities will be paid for at the contract unit prices shown in the Schedule of

Items.

b. Payment will be made under:

Pay Item Description Pay Unit

840 (1) Clean Inlet and Starter Each

840 (2) Reinstall Inlet and Starter Each

840 (3) Replace Inlet and Starter ___ (12, 18, 24, or 36) Inches

Each

840 (4) Clean Flume Each

840 (5) Reinstall Flume Linear Foot

840 (6) Replace Flume, ____ (12, 18, 24, or 36) Inches Linear Foot

840 (7) Replace Flume, ___” by ___ ft. Long Each

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842 CUTTING ROADWAY VEGETATION (10/16)

This work consists of cutting all vegetative growth including trees and other vegetation less than four (4) inches in diameter.

2. MAINTENANCE REQUIREMENTS

a. General

1) Brush, trees, and other vegetation less than four (4) inches in diameter within each area treated shall be cut to a maximum height of six (6) inches above the ground surface or obstruction such as rocks or existing stumps. When work is performed under this

Section, the Contractor shall remove all limbs which extend into the treated area or over the roadbed to a height shown in the Special Project Specifications.

2) Signs, markers, and other road appurtenances are designated to be retained. Other items to remain will be marked on the ground.

3) The width of the vegetation to be cut shall be as shown in the Special Project

Specifications.

4) Work may be performed either by hand or mechanically unless specifically shown in the Road Listing and Schedule of Items. Self-propelled equipment shall not be allowed on cut and fill slopes or in ditches.

5) Damage to trunks of standing trees caused by Contractor's operation shall be corrected by Contractor, either by treatment with a commercial nursery sealer or by removing the tree as directed by the Government.

6) Mechanical brush cutters shall not be operated when there are non-Contractor personnel or occupied vehicles within a hazardous distance of immediate operating area.

7) Trees within the cutting limits which are over four (4) inches in diameter shall be limbed in lieu of cutting

8) When trees are limbed, limbs shall be cut within four (4) inches of the trunk

b. Cutting Side Vegetation

1) Pass mile work cutting limits shall be established as follows:

a) Fill and daylighted (wide roadbed) section cutting shall commence at the edge of the traveled way and proceed away from the road centerline.

b) Drainage ditched section cutting shall commence at the bottom of the existing ditch and proceed away from the road centerline. Cutting on ditch foreslopes is not required.

c) Unditched cut section cutting shall commence at the intersection of the cutbank and the roadbed and proceed away from centerline.

2) Side mile work will be ordered in uniform width for the length of the listed segments of roads.

3) Unless otherwise included in Special Project Specifications work shall commence at the edge of the traveled way and proceed away from the road centerline. For roads without a defined traveled way the starting point for cutting will be marked in the field or defined in

Special Project Specifications.

4) Transitions between differing increments of cutting width shall be provided. Transitions shall be accomplished in a taper length of not less than fifty (50) nor more than seventy

(70) feet

c. Requirement Table

The width and height of the vegetation cutting shall be:

Road No.

From Mile To Mile Width Height

d. Debris

1) Materials resulting from the cutting operation in excess of one (1) foot in length or three

(3) inches in diameter, shall not be allowed to remain on roadway slopes within the treated area, in ditches, or within water courses.

2) Limbs and chunks in excess of three (3) inches in any dimension shall be removed from the traveled way and shoulders.

3) Materials may be scattered downslope from the roadbed, outside of the work area and drainages. Concentrations shall be rescattered or removed.

3. MEASUREMENT

a. Measurement for cutting vegetation by the pass mile will be determined by the number of four (4) foot passes ordered and accepted. Partial increments ordered to complete the outside edge of backslope or fill slope cutting and transitions will be measured as full passes. The length of each pass will be determined to the nearest one-tenth (1/10) mile on each road.

b. Measurement for cutting side vegetation by the side mile will be the length of roads or segments ordered and accepted. The length will be determined to the nearest one-tenth

(1/10) mile on each side of each road.

c. No reduction in the mileage between road terminal shown on the road listing will be made for areas where there is little or no vegetation to be cut.

4. PAYMENT

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

b. Payment will be made under:

Pay Item Description Pay Unit

842 (1) Cutting Side Vegetation Pass Mile

842 (2) Cutting Side Vegetation Side Mile

842-Cutting Roadway Vegitation