Attachment 3 - Non-Driveable Waterbar and Culvert Removal (Drawing).pdf

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EXCAVATED MATERIAL

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EXCAVATED MATERIAL SHALL BE PLACED AT LEAST 3 FEET

FROM THE EDGE OF ANY FILL SLOPE OR DITCHLINE, AND

NON-DRIVEABLE WATERBAR / CULVERT REMOVAL

EXISTING STREAMS

EXCAVATED MATERIAL

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NON-DRIVEABLE WATERBAR / CULVERT REMOVAL

NO STREAM CHANNEL

GENERAL NOTES

MINIMUM GRADE OF WATERBAR CHANNEL SHALL BE 1/2 THE DITCH

GRADE, BOTTOM WIDTH SHALL BE MIN. OF 5 FEET.

1. OLD CULVERTS SHALL BECOME THE PROPERTY OF THE CONTRACTOR

AND SHALL BE REMOVED FROM GOVERNMENT PROPERTY FOR DISPOSAL.

2. SLASH AND DEBRIS SHALL BE REMOVED FROM STREAM CHANNEL

ABOVE AND BELOW THE ROAD PRISM AS FAR AS EQUIPMENT CAN

REACH FROM ROADWAY. DEBRIS SHALL BE PLACED WHERE IT

CAN NOT RE-ENTER CHANNEL.

3. EXCAVATED MATERIAL SHALL BE PLACED AS SHOWN ON THE

DRAWINGS. NO SLOPES SHALL BE STEEPER THAN 1:1.5.

4. ALL DISTURBED AREAS SHALL BE SEEDED AND FERTILIZED

AS SPECIFIED IN SECTION 625.

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EXCAVATED MATERIAL

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CULVERTS SHALL BE REMOVED AND THE ROAD PRISM EXCAVATED TO

THE STREAMBED'S ORIGINAL ELEVATIONS. EXCAVATE THE DRAINAGE

CHANNEL AND A MINIMUM OF 3 FEET BEYOND THE ORIGINAL STREAM

BANKS.

5. MATERIAL WHICH CAN NOT BE PLACED ON THE ROADWAY SHALL BE

LOADED, HAULED, AND DISPOSED OF AS SHOWN ON THE DRAWINGS OR

DIRECTED BY THE C.O.

6. OBSTRUCTED DITCH LINES SHALL BE CLEANED TO A MIN. DEPTH OF

20 INCHES, AND CROSS SLOPES SHALL BE 1:1.5.

ON ROADWAY AND IN DITCHLINE AT SAME OVERALL HEIGHT ON THE

DOWNGRADE SIDE OF WATERBAR ONLY. PLACE EXCAVATED MATERIAL

DITCHBLOCK SHALL BE CREATED BY PLACING EXCAVATED MATERIAL

NO CLOSER THAN 3 FEET FROM ANY FILL SLOPE.

7. RIPRAP SHALL BE SORTED FROM EXCAVATED ROADWAY MATERIALS.

CLASS 3 RIPRAP

CLASS 3 RIPRAP

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EXCAVATED MATERIAL

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EXCAVATE ROAD PRISM 3 FEET OR TO ORIGINAL GROUND.

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AT LEAST 10 FEET FROM THE EDGE OF THE WATERBAR.

ON ROADWAY AND IN DITCHLINE AT SAME OVERALL HEIGHT ON THE

DOWNGRADE SIDE OF WATERBAR ONLY. PLACE EXCAVATED MATERIAL

DITCHBLOCK SHALL BE CREATED BY PLACING EXCAVATED MATERIAL

NO CLOSER THAN 3 FEET FROM ANY FILL SLOPE.

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DRAWING TITLE

PROJECT NAME

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

/11

/18

:2 8 K

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ALASKA REGION

PROJECT NAME

TONGASS NATIONAL

FOREST

DISTRICT NAME

NON-DRIVABLE

WATERBAR

11/9/2018

FS090523_R102013_L1-002.dwg

TNF ENG

K. CHERRY

TNF ENG

X-01

100002

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