Attachment__3.pdf

Attachment #3 – Special Project Specifications for Construction and Maintenance of Trails

The following specifications shall be added to the 2014 Standard Specifications for Construction of Trails and Trail Bridges on Forest Service Projects.

Section 907 - Mobilization

Add after paragraph 907.01 Work:

Contractor shall mobilize from business location or other job site to the closest or directed start location on the trails system. Mobilization is only chargeable once for each task order from the contractor’s location to the first job site. Unless specifically directed by the COR to move equipment from site-to-site, no additional miles shall be charged for movement between sites. When indicated, payment for moving from site to site will be for the distance of the most direct route from site to site. Additional mobilization charges will not be paid when multiple Task Orders are written for the same area and all sites are accessible without trailing equipment.

Make payment under:

PAY ITEM PAY UNIT

90701 Mobilization ..……………………….………….………………………..MI

Section 911 - Trail and Prism

Add after paragraph 911.00.01 Description:

New Trail Construction: This work consists of clearing and grubbing within the trail clearing limits as described in Section 912.10; excavation, embankment, and backfill construction required to shape and finish the trailbed, ditches, backslopes, fill slopes, drainage dips, trail passing sections, and turnouts; placing select borrow material on the trailbed. All work required to construct a trailbed, except for spreading and compacting aggregates, is included. Scatter the clearing debris removed from the clearing limits outside and below the clearing limits.

Add after paragraph 911.00.03 Payment:

Make payment under:

PAY ITEM PAY UNIT

91102 New Trail Construction ..……………………….………………………..MI

91106.1 Normal Tread Maintenance .…….............................................................. MI

91106.2 Heavy Tread Maintenance .………............................................................ MI http://www.fs.fed.us/recreation/programs/trail-management/documents/plans/supporting_documents/Trail_Specifications.pdf http://www.fs.fed.us/recreation/programs/trail-management/documents/plans/supporting_documents/Trail_Specifications.pdf

Section 911.30 - Existing Trail Restoration

Add after paragraph 911.30.01 Description:

Normal Tread Maintenance: Maintain trail tread, including pulling in material from undesirable berms and reincorporating into tread, correcting damage that corrupts drainage pattern. The work will include reshaping the trail to the original insloped / outsloped condition and controlling surface drainage to prevent further degradation of the trail and compact all disturbed areas. All dips will be reconstructed as shown in the drawings. Maintain all existing ditches, dips and leadoff ditches as part of the trail tread maintenance. Normal maintenance will include reconditioning of trails with not more than 6” deep ruts or holes in the tread surface. The depth will be measured using a 60” straight-edge across the drivable surface and measuring the depth of ruts/holes from the bottom of the straight edge to the deepest depth of the ruts or holes. If more than 20% of the ruts in a section are over 6” deep, the section will be evaluated under heavy tread maintenance.

Heavy Tread Maintenance: This item will be used for heavily damaged trail tread that would require more than normal maintenance to return to original shape. Heavy maintenance will include areas that are deeply rutted, have large waterholes and drainage has been significantly changed and where more than normal amount of work is needed to repair. In all cases the trail is still defined but has significant reshaping to be performed. Heavy tread maintenance will include the following: Remove and reshape berms as needed, pulling in material from undesirable berms and reincorporating into tread and compacting, correcting damage that corrupts drainage pattern, reshaping the trail to the original insloped/outsloped condition and controlling surface drainage to prevent further degradation of the trail. All dips will be reconstructed as shown in the drawings. Maintain all existing ditches, dips and leadoff ditches as part of the heavy trail tread maintenance. Use Heavy Tread maintenance if the ruts/holes are more than 6” and less than 18” deep as measured with a 60” straight-edge, and less than 30 CY of material needs to be moved over a 150’ length of trail.

Section 913 – Surfacing

Add after paragraph 913.00.05 Payment

PAY ITEM PAY UNIT

91309 Watering (per 1000 gallons) …………………….……………………..K gal 91318 Riprap Surfacing, Type _____ …………………………………………Ton

Section 921 - Culverts

Add after paragraph 921.00.08 Payment:

Make payment under:

PAY ITEM PAY UNIT

92112 Bottomless Arch Culvert ..……………………….……………..………..EA 92115 Culvert Maintenance ……………………………………………………..LF

Section 921.60 – Bottomless Arch Culvert

If headwalls are needed, add after paragraph 921.50.02 Construction:

921.50.03 Headwalls. Install headwalls and nonwoven geotextile fabric between the backfill material and the rock headwall at the locations SHOWN ON THE DRAWINGS or as DESIGNATED ON THE GROUND BY

THE COR.

Provide a compacted bench a minimum of 6 inches below the existing ground for the foundation of the headwall.

Select rocks that have a general rectangular shape with flat top and bottom faces. Place the largest rocks on the bottom. Lay each rock stable on the course that supports it, interlocking with surrounding rocks. Do not break, jar, or displace rocks already set. Place the exposed face of each rock parallel to the face of the wall. Stagger vertical joints a minimum of 4 inches horizontally from vertical joints in adjoining courses.

Section 925 - Ditches

Add after paragraph 925.00.05 Payment:

Make payment under:

92501 Construct Ditches ………..……………………….……………..………..LF

Section 966 – Trail Bridge Maintenance

Add after paragraph 966.01 Description:

This work consists of maintaining bridge approaches, deck of bridge, and waterway under bridge. Clean all debris off deck and under deck to clear waterway to original shape. Do not dispose of debris in stream or upstream of crossing. Debris will placed where designated, or be spread to blend into terrain.

Add after paragraph 966.09 Payment:

Make payment under:

96607 Trail Bridge Maintenance, Site Cleaning ……………..………..………..LF

Section 981 - Seeding, Fertilizing, and Mulching

Add after paragraph 981.01 Description:

To control erosion, apply seed to disturbed soil and slopes within 14 days of disturbance. Apply fertilizer with the seed when specified in the TO or by the COR. Use mechanical, landscape, or cultipacker seeders, seed drills, fertilizer spreaders or other approved mechanical seeding equipment to apply the seed or seed and fertilizer in the specified amounts and mixtures.

Suggested Seed Mixture for all disturbed areas, unless otherwise specified:

February 1 to May 1 August 16 to November 15 25 lbs/acre Spring Oats 50 lbs/acre Winter Wheat or Annual Rye 10 lbs/acre Orchard Grass 10 lbs/acre Orchard Grass 15 lbs/acre Perennial Rye Grass 15 lbs/acre Perennial Rye Grass 10 lbs/acre Timothy Grass 10 lbs/acre Timothy Grass

May 1 to August 15 November 16 to January 31 50 lbs/acre Annual Rye Grass 50 lbs/acre Winter Wheat or Annual Rye 5 lbs/acre Orchard Grass 10 lbs/acre Orchard Grass 15 lbs/acre Perennial Rye Grass 15 lbs/acre Perennial Rye Grass 10 lbs/acre Timothy Grass 10 lbs/acre Timothy Grass

To aid in establishment the following fertilizer and lime recommended rates are encouraged. Lime may not be needed if known soil pH is higher than 6.

Quantity Material 200 lbs/acre 14-14-14 Fertilizer / Acre 400 lbs/acre Pelletized Lime / Acre

The above Seed Mixtures are acceptable for sun and shade conditions. All seeded areas shall be mulched with straw at a rate of 1.5 tons per Acre (60 each 50-Lb bales per Acre). On slopes greater than 25%, additional mulching material shall be used such as fiber or de-gradable plastic netting or a product approved by the COR.

Mulch will be visually free of weeds and exotic plants, seed and deleterious materials.

Add after paragraph 981.09 Payment:

Make payment under:

98101 Seeding and Mulch ……………..………..………………..………acre (AC)

Section 982 – Erosion Control Blankets

After paragraph 982.02 Material:

(c) Soil Erosion Control

Where specified in the TO or by the COR, place 36” staked silt fence or staked straw bale sediment control structure as shown in the drawings.

Add after paragraph 982.05 Payment:

Make payment under:

98202 Silt Fence/Straw Bale Structure ……………….…………………………LF

Section 989 – Incidentals Special Project Specifications

Loading, unloading, or transport of Government-furnished materials

Description

989.01 This work consists of loading, unloading, or transporting government-furnished materials at trailheads or to a designated location along trails. Materials may include, but are not limited to, pavers, geotextiles, materials for gates or other restriction devices, or culverts.

Measurement

989.02 Measurement is actual quantity.

Payment

989.03 Make payment under:

98901 Loading, unloading, or transport of government-furnished materials……LF