Attachment_01_-_Description_of_Work_ _ACM_Typical.pdf

AG-64R4-S-16-0024

FR 4984 – Isaac’s Creek

MILEPOST DESCRIPTION OF WORK

0.00 Begin reconditioning of FR 156.

Remove vegetation to open outlet ditches with appropriate construction equipment.

Begin reshaping road prism obtaining a 12 foot subgrade and 10 foot base width.

Clean and recondition all outlets and cut ditches no less than 1 foot deep whether identified or not. Ditch left; in slope section begins.

Begin spreading 1” clean crushed aggregate at a depth of 2 inches and width of 10 feet.

Mow and limb from tree line to tree line as shown in Special Project Specifications.

0.01 Clean and maintain inlet and outlet of corrugated metal pipe.

0.07 Clean AA type outlet ditch left.

Double ditch section begins.

0.10 Clean AA type outlet ditches left and right.

0.13 Clean BB type outlet ditch right.

0.14 Clean BB type outlet ditch left.

0.17 Clean AA type outlet ditch right.

End double ditching. Ditch right. Crown surface.

0.29 Reshape A type dip.

Place 10 tons 4-6” clean crushed aggregate in dip.

Clean BB type outlet ditch left.

0.30 Double ditch section begins.

0.32 Clean AA type outlet ditch right.

0.34 Clean AA type outlet ditch left.

0.38 Clean BB type outlet ditches left and right.

0.41 Maintain turnout left.

Place 12 tons 1” clean crushed aggregate on turnout.

0.46 Clean AA type outlet ditches left and right.

0.48 Clean AA type outlet ditch right.

0.50 Clean AA type outlet ditch left.

0.53 Clean AA type outlet ditches left and right.

FR 4984 – Isaac’s Creek

MILEPOST DESCRIPTION OF WORK

0.58 Clean AA type outlet ditches left and right. End ditch right.

0.62 Clean and maintain inlet and outlet of corrugated metal pipe.

Begin double ditch section.

0.68 Double ditch section ends.

Begin flat blade section.

0.70 End ditch left. Begin out slope section to match existing cross grade.

Special use road to left.

Road should remain open to accommodate traffic but can be used as a staging area for materials and equipment.

0.725 Begin placement of articulating concrete mat.

Mat shall be placed in existing 20 foot corridor.

Sub-excavate rock and native material to place articulated concrete mat.

Sub-excavated grade will equal depth of concrete mat.

Two upstream rows of concrete mat will be anchored by entrenching leaving a 12-14’ driving surface. COR will be on site to approve subgrade prior to mat placement.

Up to an additional 40 feet parallel and upstream outside the 20 foot corridor east of the main creek crossing may be cleared to accommodate equipment for mat placement. All clearing debris should be piled on upstream edge of clearing area and scattered back over the cleared area after mat placement has been accepted. No disturbance will be allowed downstream unless directed by the COR. All clearing must be marked on the ground with flags, stakes, etc.

and approved by the COR prior to beginning.

0.75 Construct AA type outlet ditch right.

COR will be on site to direct placement.

Resume ditch right.

0.77 Clean and maintain inlet and outlet of corrugated metal pipe.

0.81 Clean and maintain inlet and outlet of corrugated metal pipe.

0.86 Clean and maintain inlet and outlet of corrugated metal pipe.

0.91 Clean and maintain inlet and outlet of corrugated metal pipe.

0.96 Clean and maintain inlet and outlet of corrugated metal pipe.

0.99 Reshape A type dip.

Place 10 tons 4-6” clean crushed aggregate in dip.

FR 4984 – Isaac’s Creek

MILEPOST DESCRIPTION OF WORK

1.02 Clean AA type outlet ditch left.

Double ditching begins.

1.05 Maintain turnout right.

Place 12 tons 1” clean crushed aggregate on turnout.

1.06 Clean AA type outlet ditch right.

1.13 Non-system road right.

1.14 Clean AA type outlet ditches left and right.

1.18 Clean AA type outlet ditch left.

1.20 Replace 18”x26’ corrugated metal pipe.

Remove old pipe off National Forest land.

Ditch left ends.

1.26 Clean AA type outlet ditch right.

Ditch right ends.

1.27 Clean and maintain inlet and outlet of corrugated metal pipe.

1.28 Resume ditch left.

1.37 Reshape B type dip.

Place 10 tons 4-6” clean crushed aggregate in dip.

1.41 Ditch left ends.

1.42 Clean and maintain inlet and outlet of corrugated metal pipes.

1.43 Resume ditch left.

1.51 Clean and maintain inlet and outlet of corrugated metal pipe.

1.54 Clean AA type outlet ditch left.

Resume double ditch section resumes.

1.56 Ditch right ends.

1.58 Clean AA type outlet ditch left.

1.60 Clean and maintain inlet and outlet of corrugated metal pipe.

1.61 Clean AA type outlet ditches left and right.

Double ditching begins.

1.66 Non-system road left.

1.70 Clean BB type outlet ditches left and right.

1.74 Clean AA type outlet ditches left and right.

1.83 Clean BB type outlet ditches left and right.

1.87 Private gate left.

1.90 Clean AA type outlet ditches left and right.

1.96 Clean AA type outlet ditch right.

1.98 Clean AA type outlet ditch left.

2.03 Maintain turnout right.

Place 12 tons 1” clean crushed aggregate on turnout.

2.05 Clean BB type outlet ditches left and right.

2.11 Clean AA type outlet ditches left and right.

2.15 Non-system road to left.

Clean AA type outlet ditch left.

2.16 Clean AA type outlet ditch right.

2.18 Clean AA type outlet ditch left.

2.22 Clean AA type outlet ditches left and right.

2.30 Clean BB type outlet ditches left and right.

2.34 Clean AA type outlet ditches left and right.

2.38 Reshape B type dip.

Place 10 tons 4-6” clean crushed aggregate in dip.

Clean BB type outlet ditch right.

2.43 Clean BB type outlet ditch right.

2.47 Clean AA type outlet ditches left and right.

2.54 Clean BB type outlet ditches left and right.

2.56 Maintain turnaround right.

Place 7 tons 1” clean crushed aggregate on turnaround.

2.60 Clean BB type outlet ditch left.

Clean AA type outlet ditch right.

End reconditioning of FR 4984.