PWS Attchmt_1_Spencer Whistle Stop_SPSpecs.pdf

SPECIAL PROJECT SPECIFICATIONS

2022 Spencer Whistle Stop Road Maintenance

Glacier Ranger District

Section 151. — MOBILIZATION

Description

151.01 This work consists of moving personnel, equipment, material, and incidentals to the project and performing work necessary before beginning work at the project site. This work also includes obtaining permits, insurance, and bonds.

Measurement

151.02 Measure the Section 151 items listed in the bid schedule according to Subsection 109.02.

Payment

151.03 The accepted quantities will be paid at the contract price per unit of measurement for the Section 151 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

Progress payments for mobilization by the lump sum will be paid as follows:

(a) Bond premiums will be reimbursed according to FAR Clause 52.232-5 Payments Under Fixed-Price Construction Contracts, after receipt of the evidence of payment.

(b) When 5 percent of the original contract amount is earned from pay items (not including mobilization), 50 percent of the mobilization pay item, or 5 percent of the original contract amount, whichever is less, will be paid.

(c) When 10 percent of the original contract amount is earned from pay items (not including mobilization), 100 percent of the mobilization pay item, or 10 percent of the original contract amount, whichever is less, will be paid.

(d) Any portion of the mobilization pay item in excess of 10 percent of the original contract amount will be paid after final acceptance.

Section 212. — LINEAR GRADING

212.01 This work consists of constructing roadbeds within the specified alignment and grade tolerances.

Construction Requirements

212.02 Roadway Preparation. Clear the area of vegetation and obstructions according to Sections 201 and 203.

212.03 Roadway Excavation and Embankment. Construct the roadbeds according to the applicable requirements of Section 204, except as modified herein.

Adjust the moisture content of embankment material to a moisture content suitable for compaction.

Place embankment material in 12-inch (300-millimeter) layers and compact each layer according to Subsection 204.11(a). Where compacting with rollers is not practical, use approved mechanical or vibratory compaction equipment.

Construct approach connections to existing roads, parking areas, and trails. Construct new approaches.

212.04 Grading Tolerance. Do not encroach on stream channels, impact wetlands, or extend beyond right-of-way or easement limits. Do not make alignment or profile grade adjustments that adversely affect drainage. Construct the roadbed within the following grading tolerances:

(a) Alignment (centerline). Alignment may be shifted a maximum of 10 feet (3 meters) left or right of the planned centerline. Curve radii may be reduced by up to 50 percent. Do not construct curves with radii less than 100 feet (30 meters). Compound curves are permitted.

(b) Profile grade. Profile grade may be shifted a maximum of 5 feet (1.5 meters) up or down from the plan elevation provided the new grade tangent does not vary more than 2 percent from the plan grade tangent. Connect revised forward and back grade tangents with a uniform vertical curve consistent with the design.

212.05 Acceptance. Linear grading will be evaluated under Subsections 106.02 and 106.04.

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

Measurement

212.06 Measure the Section 212 pay items listed in the bid schedule according to Subsection 109.02 and the following as applicable.

Do not measure changes in the clearing and grubbing quantity caused by alignment adjustments under Subsection 212.04.

Payment

212.07 The accepted quantities will be paid at the contract price per unit of measurement for the Section 212 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

Section 811. – SURFACE MAINTENANCE

811.01 Re-establish roadway surface drainage and remove potholes and surface irregularities from native or aggregate surfaced roads including traveled way, shoulders, turnouts, intersections and parking areas.

Construction Requirements

811.02 Performance Standards.

• Road surfaces shall be graded to maintain or re-establish drainage perpendicular to roadway centerline.

This shall be accomplished by constructing cross-grade in the form of a road crown with slope of 5% minimum on each side, or single direction cross-grade of 3% minimum, 6% maximum, such as for super elevation on curves. In general, all roads should be crowned except on higher-speed curves and where no ditch is present on the uphill side of a road traversing a side-hill. Any constructed cross-grade shall shed water to a location that carries it away from the roadway such as a constructed ditch with culverts or a natural slope away from the roadway. If ground is too flat to provide natural drainage away from the roadway a crown shall be constructed to divert water off the driving surface as much as possible.

• In large parking areas, it may not be possible to achieve 5% minimum slope due to grade control of the site. Provide as much drainage slope as possible for large parking areas or turnarounds.

• The finished surface shall have no windrows or depressions over the entire road surface. The road shall have a constant cross-grade measured from the centerline to the shoulder for crowned sections and from shoulder to shoulder in single cross-grade sections.

• Finished road surfaces shall have no ruts, rills, washboard or potholes.

• In areas with potholes, ruts or other surface depressions the road surface shall be cut down to below the full depth of potholes, ruts or other surface depressions and re-established to near the original finished elevation, while also meeting the crown or cross-slope requirements defined above. This will produce even compaction of the material throughout the road depth and cross-section, reducing the likelihood of potholes forming in the same locations.

• Suitable materials that may have been transported to the shoulder or elsewhere by traffic shall be recovered and incorporated into the surface. In some cases, material on the shoulder will have vegetation growth on it which will need to be processed out after material is brought back into the roadway.

• Unsuitable materials, such as large rocks, wood, sod and vegetation and shall be removed and disposed of as directed by CO.

• Grading shall be accomplished without segregation of gravel surfacing.

811.03 Compaction. All surfaces shall have adequate moisture content for compaction and be compacted uniformly across the surface, through the entire depth of graded material. See Schedule of Items and/or Road Listing for designation of compaction method. Unless Compaction Method B is designated in the SCHEDULE OF ITEMS and Road Listing, all traveled ways requiring compaction shall be compacted by Method A. Compaction shall commence immediately following blading. Compaction methods are:

Compaction Method A: By breaking track while operating equipment on the traveled way.

Compaction Method B: Operate 7-10 ton pneumatic, steel or equivalent smooth wheel vibratory roller over the full width for three complete passes or until visual displacement ceases, whichever is greater.

811.04 Watering. The Contractor shall apply water to the road surface to the full extent necessary to maximize the compaction potential of the surfacing material and to prevent segregation of the surfacing material during blading operations.

• Contractor may elect to obtain water from government and/or non-government sources other than those designated (if any) in the Work Listing. Government water sources are subject to approval by the Government. Non-government sources require approval by the Government for use as a source.

• Contractor is responsible to obtain the right to use the water from all sources.

• Draft hoses used to extract water from Government sources shall be tightly fitted with screens having openings no larger than 3/32 inch.

• Water shall be extracted from streams in such a manner that a flow, adequate for fish survival, is maintained at and below the point of extraction. Water extraction means and equipment shall not change or remove stream bed or habitat materials at or adjacent to any point of water extraction.

• Water must be clean, free of oils, hazardous chemicals, or any known pollutant agents.

811.05 Notification of Contract Personnel. Contractor shall notify the COR three working days prior to the day of beginning work on a road in order to coordinate inspection activities during Forest Service business hours, unless otherwise approved in writing by the Contracting Officer.

811.08 Location of Work. As specified in C.4 Project Location, shown on the attached Road Grading Map, or as ordered by the Contracting Officer.

Measurement

811.07 Measurement for blading will be by the linear mile measured along the centerline of the roadway.

Measurement will be measured to the nearest one-tenth (0.1) mile for each road. No additional measurement will be made under this section for watering or compaction.

811.08 The accepted quantities will be paid at the contract unit price per linear mile. Payment will be full compensation for sections of road meeting all requirements prescribed in this Section.

Section 813. – SPOT SURFACING AND AGGREGATE PLACEMENT

813.01 Load, haul, place and compact surface and sub-base material to repair or stabilize road. Place Spot Surfacing in locations designated by the COR.

Material

813.02 Spot Surfacing aggregate material will be provided by the Government.

813.03 Spot surfacing and aggregate placement is complete when the designated quantity of the ordered material has been placed, shaped and compacted.

Surfacing shall be distributed across the identified area with a minimum compacted thickness of 4 inches but not greater than 6 inches, except where transitioning back to original road surface.

Subbase shall be distributed across the identified area with a minimum compacted thickness identified in the Schedule, except where transitioning back to original road surface. Construct compacted lifts of not more than 12 inch depths, until designated depth is achieved.

Construct a gradual transition of approximately 50 feet at the ends of spot surfacing and subbase sections as measured along the direction of traffic.

Procedures for compaction shall follow those described in Section 811.03, Compaction Method B.

Requirements and procedures for watering shall follow those described in Section 811.04.

813.04 Location of Work. Place surfacing in the locations shown on the Road Listing or as directed by the COR.

Measurement

813.05 Measurement under this Section will be made by the total number of units for each item listed in the Schedule of Items, placed, compacted and accepted. The type of units will be one of the following and will be designated in the Schedule of Items.

A. The quantity will be the number of cubic yards measured in the vehicles, or square yards of aggregate placed and compacted. Measure each truck to determine volume of load. Provide a certified ticket for each load with the following information:

• Vehicle hauled in

• Volume hauled

• Material type hauled

• Location placed

• Date and time placed

• Source location

B. Material measured by the ton shall be verified by certified weight tickets. The Contractor shall provide certified weight tickets to the COR.

813.06 The accepted quantities will be paid at the contract price per unit of measurement for the Section 813 pay items listed in the schedule of items. Payment will be full compensation for the work prescribed in this Section.

Section 842 – ROADWAY VEGETATION MAINTENANCE

842.01 This work consists of cutting all vegetative growth, including trees and other vegetation on roadway surfaces and roadsides as described in the Construction Requirements below.

842.02 Vegetation Removal.

1. Brush, trees and other vegetation within the clearing limits shall be cut to a maximum height of 6 inches above the ground surface. All limbs which extend into the clearing limits shall be cut within two inches of the trunk, even when the trunk lies outside the clearing limits.

2. All trees or brush within the roadway or within 5 feet of the edge of the roadway shall be cut, regardless of size. Trees beyond 5 feet from the edge of the roadway, but still within the cutting limits which are over 4 inches measured at 6 inches above the ground shall be limbed in lieu of cutting.

3. Limbed trees shall have limbs cut within 2 inches of the trunk.

4. There shall be minimal or no damage to trunks of remaining trees.

5. Self-propelled equipment is not allowed on cut and fill slopes or in ditches, unless approved by the COR.

6. Mechanical cutting equipment shall not be operated when there are non-contractor personnel, Forest Service employees other than contract administrators, or occupied vehicles within three hundred (300) feet of the immediate operating area.

7. Grass and other non-woody stemmed vegetation without an intermixed brush component is not be required to be cut unless growing intermixed with brush or other woody stemmed vegetation.

8. Vegetation in and adjacent to live running water channels and standing water bodies inside the brushing limits shall be cut. Channels and standing water bodies include but are not limited to streams, rivers, run-off channels, over-flow or bypass channels, natural ponds, beaver ponds and lakes.

9. Along bridges or other roadway structures, brush and trees shall be treated in the same manner as all other areas of the project.

10. All pieces of wood greater than four (4) inches in diameter on the small end and greater than three

(3) feet in length shall be neatly stacked within the brushing limits on top of the brushing slash and debris.

11. No brushing slash shall be deposited in lakes, meadows, streams, or streambeds. Brushing slash shall not be placed to interfere with drainage structure(s) or ditch drainage. Brushing slash shall be considered to constitute all woody debris resulting from the cutting and trimming of woody material within the specified clearing limits.

12. Any exceptions to the clearing requirements listed above will be designated on the ground by the

COR.

842.03 Clearing Limits.

1. Horizontal: The treated area includes the roadway measured from the centerline to each defined road edge, or to the bottom of the ditch on ditched road segments plus an additional 10 feet on each side. The edge of the roadway may be outside the surface used by traffic, sometimes with vegetation growing on it and can usually be identified by a definable slope break toward a ditch or native ground. Where there is no defined road edge or ditch, the treated area extends 20 feet from the roadway centerline in each direction.

2. Vertical: The treated area extends within the Horizontal Clearing Limits from the ground surface to a height of 14 feet above the highest point of the cross section.

842.04 Debris.

1. Materials resulting from the cutting operation in excess of 1 inch in diameter and 12 inches in length shall not remain on roadway slopes within the treated area, in ditches, or within water courses.

2. Limbs and chunks in excess of 3 inches in any dimension shall not remain on the traveled way.

842.05 Location of Work. As specified on roads listed on the Road Listing Table and road location maps, or as ordered by the Contracting Officer.

Measurement

842.06 Unit of Measure is by the Mile and will be determined to the nearest one-hundredth (0.01) mile along road centerline as measured with a Forest Service Electronic Distance Measuring Instrument.

Work must be completed across the full width of the Clearing Limits to be counted for completion. Extra width brushed outside the Clearing Limits, unless designated by the COR, will not be measured for payment. Mobilization and Equipment Cleaning will not be measured separately for payment.

The accepted quantities will be paid at the contract price per unit of measurement for the Section 842 pay item listed in the schedule of items. Payment will be full compensation for the work completed in accordance with all requirements in this section.