4. Drawings.pdf

RECOMMENDED BY:

APPROVED:

FOREST ENGINEER

DISTRICT RANGER DATE

DATE

DATE

FOREST SUPERVISOR

INDEX OF SHEETS

SHT SHEET TITLE DATE

T-1 TITLE

G-1 LOCATION MAP

9/18/24

G-2 SCHEDULE OF ITEMS & NOTES

9/23/24

D-1 PLAN

9/15/24

D-2 ROAD PROFILE

9/18/24

D-3 ROAD SECTIONS

9/16/24

D-4 SECTION-S1

9/20/24

D-5 SECTION-G2

9/20/24

D-6 SECTION-S2

9/20/24

D-7 DETAILS

9/20/24

D-8 ROAD TYPICALS

9/23/24

M6 ROAD REPAIR S16

CALIFORNIA

LAKE COUNTY

R05 PACIFIC SOUTHWEST

MENDOCINONATIONAL FOREST

UPPER LAKE RANGER DISTRCT

United States Department of Agriculture

Forest Service

TRAVEL DIRECTIONS:

FROM UPPER LAKE, TRAVEL

NORTH ON LAKE COUNTY ROAD

301 FOR 28.5 MILES TO SODA

CREEK WEST OF LAKE

PILLSBURY. CONNECT TO FS M1

FOR 8.5 MILES THEN TO M6.

TRAVEL NORTH ON M6 FOR 5.5

MILES TO THE PROJECT SITE.

FROM ELK CREEK, TRAVEL WEST

ON GLENN COUNTY ROAD 308

FOR 8.5 MILES TO FS 20N01 THEN

8.5 MILES TO FS M3. CONTINUE

NORTH-WEST FOR 9 MILES TO FS

M6. TRAVEL SOUTH ON M6 FOR 21

MILES TO THE PROJECT SITE.

PROJECT LOCATION

MENDOCINO

NATIONAL

FOREST

DRAWING TITLE

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

9/2 7/2

4 1 0:

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(R05)

PACIFIC SOUTHWEST

M6 ROAD REPAIR S15

MENDOCINO

NATIONAL FOREST

UPPER LAKE

RANGER DISTRICT

LOCATION

AND NOTES

9/18/24

G BUTLER

G BUTLER

F. RICO

G-1

PROJECT LOCATION NOTES:

1. THIS MAP SHOWS COUNTY ROADS AND PRIMARY FS

ROADS IN THE AREA. SOME OTHER FS ROADS

ADJACENT TO THE WORK ARE SHOWN TO AID IN

NAVIGATION. MOST FS AND PRIVATE ROADS IN THIS

AREA ARE NOT SHOWN. FOR A COMPLETE MAP,

CONTACT THE GRINDSTONE RANGER DISTRICT OFFICE.

2. THE PRIMARY DETOUR ROUTE FOR ACCESS AROUND

THE WORK SITE IS SHOWN. SPECIFIC DETAILS OF THE

TRAFFIC CONTROL AND ROAD CLOSURE SIGNING

REQUIREMENTS ARE IN CONTRACT SECTION H.

ENCROACHMENT PERMITS FOR TRAFFIC CONTROL ARE

THE RESPONSIBILITY OF THE CONTRACTOR.

3. NON-POTABLE WATER FOR CONSTRUCTION MAY BE

OBTAINED FROM THE EEL RIVER OFF 19N66 OR AT

PILLSBURY PINES BOAT RAMP. ADDITIONAL WATER

SOURCES MAY BE IDENTIFIED AND APPROVED BY THE

CONTRACTING OFFICER. WATER DRAWS FROM THE EEL

RIVER OR LAKE PILLSBURY MUST CONFORM TO THE

REQUIREMENTS IN SECTION H.

4. CONTRACTOR MUST MINIMIZE TRAVEL OF STEEL

TRACKED MACHINES ON THE EXISTING AC AND CHIP

SEAL PAVEMENTS. ANY DAMAGE TO THE ROADS AS A

RESULT OF THEIR ACTIVITIES MUST BE REPAIRED BY

THE CONTRACTOR AT NO ADDITIONAL COST TO THE

GOVERNMENT.

5. PERMITS FOR OVERSIZE/OVERLOAD TRAVEL ON ANY

ROADS SHALL BE OBTAINED BY THE CONTRACTOR

PRIOR TO USE.

DETOUR AHEAD SIGN

DETOUR SIGN

ROAD CLOSED AHEAD SIGN

ROAD CLOSED

SIGN LEGEND

N

N

N

N

N

AIR

STRIP

M

301G

N

N

N

N

N

N

N

N

N

M

M

N

M

M

WORK SITE

Soda Creek

Lake Pillsbury

DETOUR ROUTE

TO POTTER VALLEY

TO UPPER LAKE

TO ELK CREEK

TO COVELO

W

W

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DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

9/2 7/2

4 1 0:

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EO

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(R05)

PACIFIC SOUTHWEST

M6 ROAD REPAIR S15

MENDOCINO

NATIONAL FOREST

UPPER LAKE

RANGER DISTRICT

SCHEDULE AND

NOTES

9/23/24

G BUTLER

G BUTLER

F. RICO

G-2

NOTES TO THE SCHEDULE OF ITEMS

15201 WORK FOR THIS ITEM INCLUDES NECESSARY MEASURES TO ENSURE PROPER

PLACEMENT (HORIZONTAL AND VERTICAL/ELEVATION) OF THE CULVERT INLET

AND OUTLET AND TO RESTORE THE ROAD ALIGNMENT AND WIDTH.

15701 WORK FOR THIS ITEM WILL INCLUDE ALL EQUIPMENT, MATERIALS, AND LABOR

NECESSARY TO PERFORM THE REQUIREMENTS OF THE APPROVED

POLLUTION AND EROSION CONTROL PLAN. THIS ITEM COVERS ALL PHASES OF

THE CONTRACT.

15713 THIS WORK INVOLVES THE REMOVAL OF ALL TREES, BRUSH, ROOT WADS, AND

DEAD TREES AND LIMBS FROM THE AREAS TO BE EXCAVATED,

MERCHANTABLE LOGS (OVER 12" DIAMETER) WILL BE PLACED IN A DECK AS

DIRECTED BY THE CONTRACTING OFFICER AT A LOCATION NEAR THE

INTERSECTION OF M6 AND 19N59(S). LOGS UNDER 12: WILL BE PLACES ON

SLOPES ADJACENT TO THE WORK AS DIRECTED BY THE CONTRACTING

OFFICER. TOPS, LIMBS, AND SMALL TREES MUST BE CHIPPED AND SPREAD

OVER THE DISTURBED AREAS AT THE COMPLETION OF ALL OTHER WORK.

20401 WORK FOR THIS ITEM INCLUDES ALL EQUIPMENT, MATERIALS, AND LABOR

NECESSARY FOR THE EXCAVATION TO DESIGN DEPTHS AND THE PLACEMENT

OF BASE MATS AND THE CONSTRUCTION OF THE GEOGRID REINFORCED FILL

TO THE FINISHED GRADES AS SHOWN ON THE DRAWINGS, THE BACKFILL

SHALL BE PLACED AND COMPACTED IN LIFTS NO GREATER THAN 12". IT IS

PRESUMED THAT THE EXCAVATION WILL PRODUCE AMPLE BACKFILL

MATERIAL. IN THE EVENT OF A SHORTAGE, THE CONTRACTING OFFICER WILL

IDENTIFY A LOCAL SOURCE FOR SUITABLE MATERIAL.

25102 WORK FOR THIS ITEM INCLUDES ALL EQUIPMENT, MATERIALS, AND LABOR

REQUIRED TO FURNISH AND PLACE THE RIPRAP AS SHOWN IN THE DRAWINGS.

INCLUDED IS THE NONWOVEN TYPE C GEOTEXTILE TO BE PLACED UNDER THE

CLASS 2 RIPRAP.

30102 WORK FOR THIS ITEM INCLUDES ALL EQUIPMENT, MATERIALS, AND LABOR

REQUIRED TO FURNISH AND PLACE, SHAPE, AND COMPACT THE SURFACE

AGGREGATE ON THE ROAD AFTER COMPLETION THE THE BACKFILL.

60504 WORK FOR THIS ITEM WILL INCLUDE ALL EQUIPMENT, MATERIALS AND LABOR

NECESSARY FURNISH AND INSTALL THE GEOCOMPOSITE DRAIN WALL AND

ASSOCIATED DRAINAGE FEATURES. INCLUDED ARE THE 6" PERFORATED AND

DOUBLE-WALL PIPE AND FITTINGS, THE 8" CMP W/ SCREEN, DRAIN ROCK,

GEOTEXTILE FILTER, AND RELATED HARDWARE. THE SPECIFIC REQUIREMENT

FOR THE GEOCOMPOSIT IS: SHEET DRAIN TYPE 1, CLASS 1, TYPE A,

62901 WORK FOR THIS ITEM INCLUDES ALL EQUIPMENT, MATERIALS, AND LABOR

REQUIRED TO FURNISH AND INSTALL TYPE 3.B, 1(STAKES) EROSION CONTROL

BLANKETS ON THE DISTURBED AND NEWLY SHAPED FILL SLOPES ABOVE AND

BELOW THE ROADWAY.

63501 THIS ITEM INCLUDES ALL EQUIPMENT, MATERIALS, AND LABOR TO ESTABLISH

AND MAINTAIN THE APPROVED TRAFFIC CONTROL PLAN FOR THE DURATION

OF SITE WORK.

SCHEDULE OF ITEMS

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DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

9/2 7/2

4 1 0:

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(R05)

PACIFIC SOUTHWEST

M6 ROAD REPAIR S15

MENDOCINO

NATIONAL FOREST

UPPER LAKE

RANGER DISTRICT

PLAN

9/15/24

G BUTLER

G BUTLER

F. RICO

D-1

EXCAVATION FOR DRAIN WALL

NOTES:

1. THE AREAS NOTED AS "BASE LEVEL" ARE THE AREAS OF THE BOTTOM SURFACE THAT THE GEOGRID / WWM

CAGES WILL REST ON. NOTED AS "BASE LEVEL" IN THE SECTION DRAWINGS. THEY ARE BELOW THE

PRESUMED SLIP PLANES OF THE FAILURES. ACTUAL EXCAVATION WILL INCLUDE THE SLOPE ABOVE THE

ROAD TO THE SLUMP SCARPS. (SEE D-4 & D-6)

2. THE AREA NOTED AS "FILL FAILURE" IS EXCAVATED ONLY UNDER THE ROAD AND THE FAILED FILL.

3. SEE SHEET D-7 FOR DETAILS AND NOTES FOR THE CONSTRUCTION OF THE BASE MAT AND STRUCTURE.

4. THE AREA NOTED AS "BED ROCK" IS PRESUMED TO BE UNDERLAIN BY FAIRLY COMPETENT SHALE. THERE IS

NO EXPECTATION OF CONSTRUCTION IN, OR DISTURBANCE THIS AREA.

5. THE AREAS OUTLINED BY THE DASHED LINES AS THE SLUMP FAILURES ARE APPROXIMATE AND BASED ON

SURFACE FIELD MEASUREMENTS.

6. NO SUBSURFACE INVESTIGATION WAS PERFORMED. ALL FAILURE LINES AND PRESUMED SLIP-PLANES ARE

BASED ON SURFACE SURVEYS. THERE IS VERY LITTLE SURFACE INDICATION OF RECENT MASS MOVEMENT

BELOW THE ROAD OTHER THAN THE ROAD FILL FAILURES.

7. SEE SHEET D-2 FOR STATIONS AND DISTANCES.

BED ROCKAREA OF FILL FAILUREEXCAVATION BASE EXCAVATION BASE

G1

S1

G2 G3

S2 G4

PROJECT SITE

10' CONTOURS ARE UNCORRECTED

ROCK OUTCROP

S1

S2

38' 48' 25' 55'

47' 60'

Sta 0.00

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DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

9/2 7/2

4 1 0:

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(R05)

PACIFIC SOUTHWEST

M6 ROAD REPAIR S15

MENDOCINO

NATIONAL FOREST

UPPER LAKE

RANGER DISTRICT

ROAD PROFILE

9/18/24

G BUTLER

G BUTLER

F. RICO

D-2

NOTES:

1. THESE PROFILES ARE ALONG THE CENTERLINE OF THE ROAD. WITH THE EXCEPTION OF ADDED CUSHION NOTED IN #4

BELOW AND ANY MINOR CUT OF FILL TO MAINTAIN A DESIGNED ROAD ROAD WIDTH OF 18' AS SHOWN ON THE VARIOUS

SECTIONS (D-4 TO D-6), THE WORK DOES NOT PROPOSE TO SIGNIFICANTLY ALTER EITHER THE VERTICAL OR

HORIZONTAL ALIGNMENT OF THE ROAD.

2. STATION 0.00 IS ARBITRARILY ESTABLISHED AT THE DRAINAGE CROSSING AT MP 21.3. THE ELEVATIONS ARE BASED ON

LIDAR SURVEY, GIS, AND LOCAL TOPOGRAPHIC DATA (USGS). THEY ARE INTENDED FOR LOCAL REFERENCE ONLY

DURING CONSTRUCTION.

3. THE GOVERNMENT WILL STAKE STATIONS 0.00 AND G2 AND MARK ELEVATION 3640 AT STATION G3.

4. THE AREA INDICATED AS "ADDITIONAL BACKFILL" BETWEEN STATIONS G2 AND S2 IS INTENDED FOR THE PLACEMENT

AND COMPACTION OF ANY SUITABLE EXCESS EXCAVATED MATERIAL. MATERIAL, PLACEMENT, AND COMPACTION MUST

BE IN COMPLIANCE WITH SECTION 204. (SEE NOTE TO THE SCHEDULE OF ITEMS) THE DEPTH OF THIS FILL MUST NOT

EXCEED THE ELEVATION OF A STRAIGHT LINE BETWEEN THE FINAL ELEVATIONS AT G2 AND S2 .

5. FINAL SHAPING OF THE ROAD WILL BE WITH A 1-2% OUTSLOPE

STA 638

G1

G2 G3 S2

AREA FOR ADDITIONAL BACKFILL

CENTERLINE PROFILE, G2 - S2

CENTERLINE PROFILE, G1 - G4

STA 553

S1

STA 481

G2

STA 388

G3

STA 317

S2

STA 145

G4

101.7'71.2'92.5'72.5'40'

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DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

9/2 7/2

4 1 0:

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G;

(R05)

PACIFIC SOUTHWEST

M6 ROAD REPAIR S15

MENDOCINO

NATIONAL FOREST

UPPER LAKE

RANGER DISTRICT

ROAD SECTIONS

9/16/24

G BUTLER

G BUTLER

F. RICO

D-3

NOTES:

1. THESE SECTION PROFILES ARE

PROVIDED AS REFERENCE. THEY ARE

SHOWN AT 1:1 (V:H). THEY DO NOT

CONTAIN ANY DESIGN ELEMENTS.

2. THESE SIX SECTION VIEWS CORRESPOND

WITH THE LINES SHOWN ON THE PLAN

VIEWS (D-1). THEY ARE BASED ON LIDAR

DATA GATHERED PRIOR TO SOME OF THE

RECENT GROUND MOVEMENT.

3. THE SECTION PROFILES AT S1 AND S2

HAVE BEEN ADJUSTED TO SHOW THE

SLUMP SCARPS THAT HAVE DEVELOPED

ABOVE THE ROAD. THESE ADJUSTMENTS

HAVE BEEN INCORPORATED INTO THE

DESIGN.

4. STATIONS S1 AND S2 SHOW THE

PRESUMED SLIP PLANES OF THE SLUMPS.

STA 638

G1

STA 553

S1

STA 481

G2

STA 388

G3

STA 317

S2

STA 145

G4

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DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

9/2 7/2

4 1 0:

G

EO

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EB

UT

LE

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E:

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_P 3A

.D W

G;

(R05)

PACIFIC SOUTHWEST

M6 ROAD REPAIR S15

MENDOCINO

NATIONAL FOREST

UPPER LAKE

RANGER DISTRICT

SECTION AT S1

9/20/24

G BUTLER

G BUTLER

F. RICO

D-4

6" DOUBLE-WALL HDPE DRAIN PIPE

GEOGRID

BASE LEVEL, 3626'

GEOCOMPOSITE SHEET DRAIN

EXCAVATED BACK WALL

FINISHED GROUND PROFILE

TIER 4

TIER 3

TIER 2

TIER 1

NOTES:

1. THE BACKWALL EXCAVATION BEGINS AT THE EXPOSURE OF THE SLUMP ON THE SURFACE ABOVE THE ROAD AND FOLLOWS

A STRAIGHT LINE DOWN TO THE HORIZONTAL DRAIN PIPE.

2. THE TYPE III GEOGRID IS PLACED IN 2' TIERS. GEOGRID TIERS EXTEND FROM THE GEOCOMPOSITE DRAIN TO THE

RECONSTRUCTED SLOPE. COMPACTION IS IN ACCORDANCE WITH SECTION 204.

3. ALL FINISHED SLOPES ARE 2:1 (H:V) UNLESS OTHERWISE NOTED HEREIN.

4. THE HORIZONTAL AND LATERAL DRAIN PIPES ARE DETAILED ON SHEET D-7.

5. FINAL SHAPING OF THE ROAD WILL BE WITH A 1-2% OUTSLOPE.

6. THE BASE LEVEL MUST BE UNDISTURBED NATIVE MATERIAL OR SUITABLE MATERIAL PLACED, LEVELED, AND COMPACTED.

7. THE "DITCH" SHOWN IN THE PROFILE IS INTENDED AS A DEMARCATION FOR THE INSIDE EDGE OR THE ROAD AND TO

COLLECT MINOR SLOUGHED MATERIAL FROM THE SLOPE. NO PROVISION IS INCLUDED IN THE DESIGN TO DIVERT OR

RELIEVE ANY COLLECTED WATER RUNOFF. THE SUB-SURFACE DRAINAGE SYSTEM AND THE ROAD OUT SLOPE ARE THE

PRIMARY FEATURES INTENDED TO HANDLE ANY SURFACE AND SUB-SURFACE WATER.

SECTION AT STATION S1

TIER 5

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DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

9/2 7/2

4 1 0:

G

EO

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EB

UT

LE

R

E:

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\M 6_

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_P 3A

.D W

G;

(R05)

PACIFIC SOUTHWEST

M6 ROAD REPAIR S15

MENDOCINO

NATIONAL FOREST

UPPER LAKE

RANGER DISTRICT

SECTION AT G2

9/20/24

G BUTLER

G BUTLER

F. RICO

D-5

WWM MAT

6" DOUBLE-WALL HDPE DRAIN PIPE

GEOGRID

BASE LEVEL - 3629'

GEOCOMPOSITE SHEET DRAIN

RIPRAP REINFORCED CUT SLOPE

CUT ANGLE: 45°/1:1

FINISHED GROUND PROFILE

TIER 2

TIER 1

NOTES:

1. THE BACKWALL EXCAVATION IS A CONTINUATION OF THE RIPRAP REINFORCED CUT SLOPE AT THE INSIDE EDGE OF THE

ROAD AND FOLLOWS A STRAIGHT LINE DOWN TO THE HORIZONTAL DRAIN PIPE.

2. THE WWM MAT IS PLACED ON THE BASE LEVEL AND FACED WITH GEOTEXTILE (SEE DETAIL, SHEET D-7).

3. THE TYPE III GEOGRID IS PLACED IN 2' TIERS. TIER 1 GRID OVERLAPS THE WWM MAT PANELS BY NO LESS THAN 36".

GEOGRID TIER 2 & 3 EXTEND FROM THE GEOCOMPOSITE DRAIN TO THE RECONSTRUCTED SLOPE.

4. ALL FINISHED SLOPES ARE 2:1 (H:V) UNLESS OTHERWISE NOTED HEREIN.

5. THE HORIZONTAL AND LATERAL DRAIN PIPES ARE DETAILED ON SHEET D-7.

6. FINAL SHAPING OF THE ROAD WILL BE WITH A 1-2% OUTSLOPE.

7. THE BASE LEVEL MUST BE UNDISTURBED NATIVE MATERIAL OR SUITABLE MATERIAL PLACED, LEVELED, AND COMPACTED.

8. THE "DITCH" SHOWN IN THE PROFILE IS INTENDED AS A DEMARCATION FOR THE INSIDE EDGE OR THE ROAD AND TO

COLLECT MINOR SLOUGHED MATERIAL FROM THE SLOPE. NO PROVISION IS INCLUDED IN THE DESIGN TO DIVERT OR

RELIEVE ANY COLLECTED WATER RUNOFF. THE SUB-SURFACE DRAINAGE SYSTEM AND THE ROAD OUT SLOPE ARE THE

PRIMARY FEATURES INTENDED TO HANDLE ANY SURFACE AND SUB-SURFACE WATER.

9. DETAILS OF THIS DESIGN ARE BASED ON THE WELDED WIRE WALL SYSTEM FROM HILFIKER RETAINING WALLS. THE CONTRACTOR IS FREE TO SUBMIT TO THE CONTRACTING OFFICER OTHER SYSTEMS WHICH OFFER THE SAME PERFORMANCE SPECIFICATIONS.

SECTION AT STATION G2

24'

CL

RO

AD

TIER 3

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DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

9/2 7/2

4 1 0:

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(R05)

PACIFIC SOUTHWEST

M6 ROAD REPAIR S15

MENDOCINO

NATIONAL FOREST

UPPER LAKE RANGER

DISTRICT

SECTION AT S2

9/20/24

G BUTLER

G BUTLER

F. RICO

D-6

SECTION AT STATION S2

NOTES:

1. THE BACKWALL EXCAVATION BEGINS AT THE EXPOSURE OF THE SLUMP ON THE SURFACE ABOVE THE ROAD AND FOLLOWS

A STRAIGHT LINE DOWN TO THE HORIZONTAL DRAIN PIPE.

2. THE TYPE III GEOGRID IS PLACED IN 2' TIERS. GEOGRID TIERS EXTEND FROM THE GEOCOMPOSITE DRAIN TO THE

RECONSTRUCTED SLOPE.

3. ALL FINISHED SLOPES ARE 2:1 (H:V) UNLESS OTHERWISE NOTED HEREIN.

4. THE HORIZONTAL AND LATERAL DRAIN PIPES ARE DETAILED ON SHEET D-7.

5. FINAL SHAPING OF THE ROAD WILL BE WITH A 1-2% OUTSLOPE.

6. THE BASE LEVEL MUST BE UNDISTURBED NATIVE MATERIAL OR SUITABLE MATERIAL PLACED, LEVELED, AND COMPACTED IN

ACCORDANCE WITH SECTION 204.

7. THE "DITCH" SHOWN IN THE PROFILE IS INTENDED AS A DEMARCATION FOR THE INSIDE EDGE OR THE ROAD AND TO

COLLECT MINOR SLOUGHED MATERIAL FROM THE SLOPE. NO PROVISION IS INCLUDED IN THE DESIGN TO DIVERT OR

RELIEVE ANY COLLECTED WATER RUNOFF. THE SUB-SURFACE DRAINAGE SYSTEM AND THE ROAD OUT SLOPE ARE THE

PRIMARY FEATURES INTENDED TO HANDLE ANY SURFACE AND SUB-SURFACE WATER.

6" DOUBLE-WALL HDPE DRAIN PIPE

GEOGRID

BASE LEVEL, 3627'

GEOCOMPOSITE SHEET DRAIN

EXCAVATED BACK WALL

FINISHED GROUND PROFILE

TIER 4

TIER 3

TIER 2

TIER 1

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DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

9/2 7/2

4 1 0:

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(R05)

PACIFIC SOUTHWEST

M6 ROAD REPAIR S15

MENDOCINO

NATIONAL FOREST

UPPER LAKE

RANGER DISTRICT

DETAILS

9/20/24

G BUTLER

G BUTLER

F. RICO

D-7

TYPE III GEOGRID

GEOCOMPOSITE SHEET DRAIN

PERFORATED

HDPE DRAIN PIPE

HDPE DOUBLE-WALL DRAIN PIPE

NOTES:

1. HDPE DRAINAGE PIPE MAY BE CONNECTED BY THERMOFUSE WELDING

OR WITH MECHANICAL (BELL & SPIGOT) FITTINGS. PIPE AND FITTINGS

SHALL CONFORM TO AASHTO M253 AND ASTM F2648 & D3212. ANY

METAL COMPONENTS SHALL BE STAINLESS STEEL.

2. HORIZONTAL PERFORATED DRAIN PIPE SHALL BE PLACED AT 1 - 2%

SLOPE. THE LATERAL DRAINS MUST BE NO LESS THAN 6% GRADE.

3. THE BENTONITE SEALS MUST BE PLACED AT THE TRANSITION FROM

PERFORATED TO SOLID PIPE AND BE NO MORE THAN 12" INSIDE THE

EDGE OF THE GEOMENBRANE OR GEOTEXTILE.

4. THE DRAIN ROCK IN THE DRAINAGE SYSTEM SHALL BE COMPLETELY

ENCASED IN NON-WOVEN GEOTEXTILE AS SHOWN IN DETAIL D4-A & B.

5. THERE ARE SEVERAL METHODS TO AFFECT AN EFFECTIVE SEAL

BETWEEN THE HDPE PIPE AND THE CMP. THE CONTRACTOR SHALL

SUBMIT FOR GOVERNMENT APPROVAL A SEALING SYSTEM DESIGNED

TO CREATE A LASTING SEAL BETWEEN THE TWO PIPES.

6. DETAILS OF THIS DESIGN ARE BASED ON THE WELDED WIRE WALL

SYSTEM FROM HILFIKER RETAINING WALLS. SEE NOTE 9, SHEET D-5

TYPICAL LAYOUT FOR THE

GEOCOMPOSITE DRAIN WALL

8" - 16GA GALV. CMP

6" DOUBLE WALL HDPE PIPE

SCREENED END CAP

SEAL. SEE NOTE 5

NON-WOVEN GEOTEXTILE

WASHED DRAIN ROCK

5' MIN.12"-18" 10" MIN.

6" HDPE DOUBLE-WALL PIPE

6" HDPE PERFORATED DRAIN PIPE

BENTONITE SEAL. SEE NOTE 3

WWM MAT & CAP

SEE DETAILS BELOW

GALVANIZED CMP

WWM MAT CAP

NON-WOVEN GEOTEXTILE

36"

BACKING MAT

WWM MAT

BASE MAT DETAILS

DRAIN OUTLET DETAILS

REINFORCED BACKFILL AND DRAIN

DRAIN SEAL

GEOCOMPOSITE

DEPTH TO MAINTAIN GRADE

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DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

9/2 7/2

4 1 0:

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EO

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G;

(R05)

PACIFIC SOUTHWEST

M6 ROAD REPAIR S15

MENDOCINO

NATIONAL FOREST

UPPER LAKE

RANGER DISTRICT

ROAD TYPICALS

9/23/24

G BUTLER

G BUTLER

F. RICO

D-8

TYPICAL OUTSLOPED ROAD SECTION - AGGREGATE

COMPACTED BACKFILL

UNDISTURBED NATIVE MATERIAL

SURFACE AGGREGATE

AGGREGATE BASE

NOT USED HERE

2% OUTSLOPED ROAD, NO DRAIN DITCH

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