Sect3110000Rev082516.docx

DIVISION 31 – EARTHWORK

SECTION 311000 SITE CLEARING

GENERAL

1.1 SUMMARY

A. This work shall consist of clearing, grubbing, trimming, removing, and disposing of or treatment of timber, construction slash and debris. This work shall also include preservation of vegetation and objects designated to remain from injury or defacement.

1.2 related sections A. Section 017419 “Construction Waste Management and Disposal.”

1.3 DEFINITIONS

A. Areas to be Cleared and Grubbed - The limits of clearing and grubbing will be established by this specification, by other specification items, or on contract Drawings. The clearing and grubbing limits will normally coincide with the designated working limits; however, the Contracting Officer may also designate areas within the working limits where clearing and grubbing is not required or allowed within the provisions of this specification.

1. Grading Limits - Area that is to be excavated or covered with additional materials during construction.

2. Working Limits - Area consisting of the grading limits plus room for equipment to maneuver to perform the necessary clearing and grubbing. These limits, to be held to a minimum, will be designated for each project.

3. Clearing Limits - Area consisting of the working limits plus any additional area to operate a boom or other above-ground clearance requirement.

1.4 MEASUREMENT AND PAYMENT

A. Payment under the Base Proposal will be lump sum for Clearing and Grubbing.

B. Payment under the Option 1 will be lump sum for Clearing and Grubbing.

PART 2 - PRODUCTS (Not Applicable)

PART 3 - EXECUTION

3.1 clearing and grubbing A. All trees, brush, shrubs, stumps, roots, and other vegetative material and debris within the designated clearing limits, shall be cleared, grubbed, removed, and disposed of except the following condition:

1. Those items designated to remain by the Contract or Contracting Officer.

B. Clearing slash shall be treated in accordance with “Slash Treatment” paragraph below.

C. Trees shall be felled within the clearing limits, usually towards the center, so as to prevent damage to the trees that are to be left standing. In some cases, controlled felling, cutting of trees into sections from the top downward, or other means shall be used when required to prevent damage to property, structures, traffic, and trees/vegetation to remain.

D. Fire-dangerous dead trees or unstable live trees, designated by the Contracting Officer within the project area, shall be cut off not more than 12 inches above the uphill ground line and utilized or removed.

3.2 UTILIZATION OF TIMBER

A. Merchantable timber is timber that meets Utilization Standards. Utilization Standards shall be trees larger than 8-inches in diameter measured 12-inches above grade.

B. Utilization and Removal of Timber: Trees that meet “Merchantable Timber” standards shall be treated as follows:

1. Logs meeting utilization standards shall be limbed and decked at locations shown on the Drawings or approved by the Contracting Officer. Decking shall be done in such a manner that logs are piled parallel one to the other, can reasonably be removed by standard log loading equipment, will not damage standing trees, and will not roll. Decks shall be free of brush and soil. Title to all such timber cut from National Forest land shall remain with the Forest Service, U.S. Department of Agriculture, in accordance with its regular procedures, unless otherwise specified.

2. The FS will be responsible for removing the decked merchantable timber.

C. Disposal of Unmerchantable Timber.

1. Construction slash shall be scattered outside the clearing limits without damaging trees. All logs shall be limbed and placed away from trees, positioned so they will not roll, and not be placed on top of one another. Stumps shall be removed and can be disposed of in a designated disposal site within 1 mile of the work site. Other construction slash shall be limbed and scattered to reduce slash concentrations.

2. No construction slash shall be deposited in lakes, meadows, streams, or streambeds. Construction slash that interferes with drainage structures shall be removed immediately.

3.3 slash treatment A. Treatment of construction slash larger than 3-inches in diameter and 3-feet in length shall be accomplished by one or more of the following methods as designated by the Contracting Officer.

1. Decking Unmerchantable Material: Logs not meeting utilization standards and other material that exceeds 8-inches in diameter shall be decked in areas shown on the Drawings and approved by the Contracting Officer. Material shall be cut into lengths not to exceed 32 feet and all limbs removed. Decks shall be stable and free of brush and soil.

2. Removal: Construction slash shall be removed or hauled to locations shown on the Drawings and designated on the ground.

3. Construction slash less than 3 inches in diameter and 3 feet in length may be scattered within the clearing limits.

4. No construction slash shall be deposited in lakes, meadows, streams, or streambeds. Construction slash that interferes with drainage structures shall be removed immediately.

3.4 CLEARING OR CLEARING AND GRUBBING REQUIREMENTS FOR VARIOUS ITEMS:

A. Trenches for Water, Electrical Lines, and other Underground Utilities - If no reference is made elsewhere, a clearing of 5 feet on each side of centerline will be allowed.

B. Wells: The clearing area shall be minimized, but shall be large enough for the well to be constructed safely. Provide an adequate area for the well drilling rig to operate.

3.5 WASTE DISPOSAL

A. Debris and refuse shall be disposed of in accordance with Section 017419 “Construction Waste Management and Disposal”.

END OF SECTION

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