Attachment 5 drawings.pdf

Section 982 – Logging Out Description

982.01 Work. This work consists of removing brush, logs, and down trees from the clearing limits.

Requirements

982.02 Clearing Out. Cut and remove all logs that extend across or into the clearing limits as SHOWN ON THE DRAWINGS or 1 ft. above the top of the cut-slope of all ditches, catch basins, and trail structures, whichever is greater. This includes all previously cut logs within the defined clearing limits. All limbs from fallen trees that extend into the clearing limits must be cut flush to the bole of the tree and removed. The portions of cut logs that remain on the upper side of the trail shall be either firmly anchored to prevent sliding or rolling onto the trail way or moved across the trail to the lower side and scattered outside the clearing limits.

Fell all trees over 3 inches in diameter that are leaning into the clearing limits and that are within 10 feet above the trail bed as SHOWN ON THE DRAWINGS. Stump height of leaning trees that are cut outside the clearing limits shall be cut flush on the uphill side of the stump. Disposal and payment for the leaning trees described above will be the same as for down logs and trees.

Remove roots, root wads, and stumps from trees within the clearing limits that have been uprooted. Fill any holes within the clearing limits with suitable material and compact.

Rerouting the trail around windfalls, uprooted trees, and other obstacles will not be permitted. Repair sections of the trail tread that have been damaged by uprooted stumps as necessary to provide safe passage on the trail. Payment for such work will be incidental to the specified work item, and no extra payment will be made.

Remove sticks or wood chunks exceeding 2 inches in diameter or 1 foot in length that have fallen on to the trail bed.

Scatter the down trees on the lower side of the trail way outside the clearing limits. Do not place such materials in stream channels, drainage ways, ditches, culvert catch basins, or other locations where they would prevent the free flow of water away from the trail bed.

Measurement

982.03 Method. Determine the quantity of logging out units by measuring the slope distance along the trail centerline.

Payment

982.04 Basis Make payment, for all units inspected and accepted, at the unit prices

SHOWN IN THE SCHEDULE OF ITEMS.

Make payment under:

PAY ITEM PAY UNIT

982(01) Logging Out mile

Section 984 – Loose Rock Removal

984.01 Work. This work consists of removal and disposal of loose rock from the trail tread Requirements

984.02 General. Remove loose rocks that are larger than two (2) inches at their greatest dimension from the trail bed. Remove any loose rock in drainage dips or ditches that may impede water flow off the trail. Loose rocks are rocks that are not firmly embedded in the trail and can be removed by hand. Where the trail bed consists predominantly of rock with little or no soil present, remove all loose rock larger than 3 inches.

Fill any holes remaining from rock removal with suitable material and compact. If the rock removed is not needed for other items of maintenance work, scatter the rock by side casting to the lower side of trail way beyond the clearing limits, and distribute rock to ensure that no blockage of drainage or creation of a windrow occurs. Do not dispose of waste materials in watercourses.

Measurement

984.03 Method. Determine the quantity of loose rock removal units by measuring the slope distance along the trail centerline.

Payment

984.04 Basis. Make payment, for all units inspected and accepted, at the unit price

SHOWN IN THE SCHEDULE OF ITEMS.

Make payment under:

984 (01) Loose Rock Removal mile

Logging Out - Section 982

REMOVE

Section 991 – Drainage Maintenance

991.01 Work. This work consists of cleaning all drainage structures such as: culverts, water bars, drainage dips, ditches, stream fords, gully crossings, puncheons and bridges.

Drainage maintenance also includes removal of vegetation and debris from the disturbed (constructed) surface area of the drainage structure, such as ditches, catch basins, water bar spillways, sumps, etc.

Materials

991.02 Requirements. Use materials meeting the requirements of the following sections:

961 -- Rock, Grid Pavement Units, and Aggregate 962 – Materials for Timber Structures Requirements

991.03 General. Where trail drainage facilities have been plugged and the water has been diverted from the intended channel, remove the debris causing the diversion and return the drainage to the channel. Divert water off and away from the trail bed.

Clean ditches to permit the free flow of water into culverts and away from the trail.

Remove all woody vegetation that is within 1 ft. of the top of the cut-slope of all ditches and catch basins.

Scatter all unusable or unneeded material that is cleared from the drainage structures 3 feet or more beyond and below the trail or drainage facility and out of watercourses.

991.04 Culverts. Remove debris and soil from catch basins and inlet and outlet ditches and inside culverts to permit the unobstructed flow of water into, through, and away from the culvert.

991.05 Water bars. Clean the upgrade side of all existing water bars and maintain them as SHOWN ON THE DRAWINGS. Use and compact suitable material removed from the upgrade side of wood and rock water bars to bring the trail tread flush with the top of those water bars on the downgrade side. Rubber belted water bars should have all debris removed from the upgrade and downgrade sides of the rubber belting in order to allow the rubber to flex as intended. Remove all accumulated soil and debris from the leadoff area and outlet ditches of all water bars until the drain is a minimum of 4 in. deep and ditches are a minimum of 12 in. wide with angled cut slopes as SHOWN ON THE DRAWINGS. All leadoff ditches must maintain a sustained negative grade until water flows freely down the hill slope.

991.06 Drainage Dips. Clean deposited material and restore drainage dips as SHOWN ON THE DRAWINGS. Remove all debris from the leadoff area of dips until the drain is a minimum of 4 in. deep and ditches are a minimum of 12 in. wide with angled cut slopes as SHOWN ON THE DRAWINGS. All leadoff ditches must maintain a sustained negative grade until water flows freely down the hill slope.

Use suitable material obtained by cleaning dips for fill on the downgrade side, removing rock more than 2 inches at its greatest dimension. Compact all material placed in the trail tread.

991.07 Trail Structures. Clean all debris off of the surface of all lumber decked trail structures, such as bridges and puncheons. Dispose of debris on the down slope side of trail out of clearing limits. Do not place such materials in stream channels, drainage ways, ditches, culvert catch basins, or other locations where they would prevent the free flow of water away from the trail bed.

991.08 Stream fords and Gully Crossings. Remove debris and loose rocks over 2 inches from existing stream crossings to provide the tread width. Level and smooth the stream bottom with gravel or rock less than 2 inches in greatest dimension to provide a crossing.

Measurement

991.09 Method. Determine the quantity of drainage maintenance units by measuring the slope distance along the centerline. Measure other items by a count of those designated.

Payment

991.10 Basis. Make payment for all units inspected and accepted, at the unit price

SHOWN IN THE SCHEDULE OF ITEMS.

Make payment under:

991(01) Drainage Maintenance mile

MOD P00002-12034319P0145

Waterbar Cleaning- Section 991.05

Remove all sediment and debris until ditch or spillway meets existing side slope (daylight) Relax all cut slopes to 60 deg. or less

Apron

12 in. minimum ditch width

Maintain sustained negative grade throughout entire drain. Remove all vegetation from structure

Loose rock, woody debris, sediment

Retain 4 – 6 in. soil sloped against bar

Minimum 4 in. depth

Woody materials will be removed from trail tread

Place soil, sod, duff, sediment, loose rock on downgrade side and compact