Dotson Creek Road Landslide_Revision Final_6.20.24 - signed.pdf

SCALE:1"=2000'

2000100002000

PROJECT LOCATION MAP

DESCRIPTION

INDEX OF SHEETS

POUND & WISE, VA QUADRANGLES

5/29/24

N

Virginia

Virginia

Maryland

North

Tennessee

Kentucky

West

Carolina

Wise County

GENERAL NOTES

1. Before performing any excavation, contact Miss Utility, (800) 810-7197, to confirm the location of any below ground utility lines in the work area.

2. Before starting the work, contact the Agency for proper clearance and be governed by the Agency's instructions.

3. The contractor is responsible for scheduling, expediting, directing, inspecting and coordinating the work so as to complete the work in the time agreed upon.

4. Work in close cooperation with the Agency and others engaged in the project so that the work will be completed in an orderly manner.

5. Provide temporary supports as may be required during construction to ensure the stability of the proposed excavation.

DOTSON CREEK ROAD LANDSLIDE PROJECT

MINED LAND REPURPOSING

ABANDONED MINED LAND SECTION

WISE, VA

PROJECT LOCATION

of

Sheet 5/29/24

Date:

jwf

Vicinity Map

Designed:

Drawn:

jwf

Dotson Creek Road Landslide

WISE COUNTY, VIRGINIA

Scale:

1'=120'

Revisions:

N

Big Stone Gap, Virginia

(276) 523-8100

Legend

Contour(200')

Contour(40')

SCALE:1"=120'

120600120

Stream

Limit of Disturbance

Road

Dotson Creek

Dotson Creek Rd

Number:

Lower Project Site

Haulroad

Upper Project Site m i l e t o

G r e n

H l l w

R d

2120'

'22

'22

2150'

2160'

2170'

2180'

2190'

D o t s o n

C r e e k

R d

R

D o t s o n

C r e e k

2120'

'22

'22

'22

'22

'22

2180'

2170'

A

A

B

B

5/29/24

Date:

jwf

Lower Site Plan 1: Excavation

Designed:

Drawn:

jwf

Dotson Creek Road Landslide

WISE COUNTY, VIRGINIA

Scale:

1" = 40'

Revisions:

N

Big Stone Gap, Virginia

(276) 523-8100

Legend

Contour(10')

Contour(2')

SCALE:1"=40'

4020040

Landslide/Slope Failure

Limit of Disturbance of

Sheet

Number:

Stream

Existing Drain Pipe

Cross Section

A

Underdrain

Proposed Drain Pipe

Proposed Contour(10')

Proposed Contour(2')

A'

Temporary Drain Pipe

Culvert 1

Culvert 2

Scarp Area

Remove loose unstable material from the slide area. Excavate down to solid rock/residual soil.

See Cross Section and

Specifications for details.

Remove loose unstable material from scarp area. Regrade and stabilize with Erosion Control

Blanket. Revegetate.

Install Drain 1 at the bottom of the excavation. Grade drain into

Dotson Creek. See Typical

Detail.

Remove existing drain pipes and dispose at landfill.

Culvert 3: Remove and replace existing

VDOT culvert.

Access Route

Culvert 4: Install temporary culvert to divert stormwater away from work area. Armor outlet.

See Spec 6.D.iv - Temporary Drainage Control.

Proposed

Drain Pipe w/ Endwall

Install Endwalls on Culvert 3 ð ð ð ð ð ð ð ð ð ð ð ð ð ð ð ð

2120'

'22

'22

2150'

2160'

2170'

2180'

2190'

D o t s o n

C r e e k

R d

R

D o t s o n

C r e e k

2120'

'22

'22

'22

'22

'22

2180'

2170'

A

A

B

B

5/29/24

Date:

jwf

Lower Site Plan 2: Backfill

Designed:

Drawn:

jwf

Dotson Creek Road Landslide

WISE COUNTY, VIRGINIA

Scale:

1" = 40'

Revisions:

N

Big Stone Gap, Virginia

(276) 523-8100

Legend

Contour(10')

Contour(2')

SCALE:1"=40'

4020040

Riprap Buttress

Limit of Disturbance of

Sheet

Number:

Stream

Cross Section

A ð ðDitch

Underdrain

Temporary Drain Pipe

Proposed Contour(10')

Proposed Contour(2')

A'

Ditch 1

Proposed Drain Pipe

Drain 1

Culvert 1

Culvert 2

Access Route

Backfill excavated area with riprap stone and coarse aggregate. See

Cross Section and Specifications for details.

Install Riprap Buttress along the toe of the scarp area at the discretion and upon approval of the Project Inspector in coordination and with approval by VDOT.

Culvert 3

Remove Culvert 4 upon completion of Ditch 1.

Repave Dotson Creek Road according to Specifications. Expected paving to span approximately from Temporary

Culvert 4 to Culvert 3.

Tie new asphalt into existing pavement.*

Tie new asphalt into existing pavement.*

*Remove the top layer of asphalt, grade resulted millings, place a layer of surface mix asphalt to tie back into the existing asphalt.

Asphalt Repair

Proposed

Drain Pipe w/ Endwall

2300'

Primary Disposal Area

Maintain haulroad with coarse aggregate as needed through project. Install water bars;

200' max spacing between bars.

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Sheet Number:

D a t e j w f

U p p e r

S i t e

P l a n

D i s p o s a l

A r e a

D e s i g n e d

D r a w n j w f

D o t s o n

C r e e k

R o a d

L a n d s l i d e

W I S

E

C

O U

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Y

V

I R

G I N

I A

S c a l e

R e v i s i o n s

B i g

S t o n e

G a p

V i r g i n i a

N

Legend

Contour(25')

Contour(5')

SCALE:1"=60'

6030060

Limit of Disturbance

Temporary Drain Pipe

Secondary Disposal Area

Culvert 6: Install temporary culvert/roadbed to maintain site drainage. See Spec

6.D.iv - Temporary

Drainage Control

Access Route

Disposal Area

Proposed Drain Pipe

Culvert 5

Note:

Material shall be graded (2:1 max slope) smoothly and evenly across the designated disposal areas, following the general contours of the land. See Specification

No. 6 - Excavation for details.

E l e v a t i o n

E l e v a t i o n

Station

Station

A-A'

0+00 0+50 1+00 1+50 2+00 2+50

0+00 0+50 1+00 1+50 2+00 2+50

Slide Failure Access Route

Access Route shall be backfilled with stable earthen material removed to excavate the roadbed. If material excavated is deemed unusable by the Project Inspector, backfill with Class A1 rirap and VDOT No. 1 stone as done in the slide area. Haul all unusable material to the disposal area. Revegetate all disturbed ground.

E l e v a t i o n

E l e v a t i o n

Station

Station

B-B'

0+00 0+40 0+80 1+20 1+60

0+00 0+40 0+80 1+20 1+60

Install Riprap Buttress of

Class 1 Riprap along the bottom of the scarp slope.

Remove/Excavate loose and unstable material back to solid rock or residual soil.

Final location of cut line will be based on field conditions.

5' Max

5' Max

2.5' Min

Place apron layer of Class 1 riprap on any disturbed ground beyond the toe of the fill slope.

Embankment shall be backfilled with riprap stone and coarse aggregate up to the sub-base of the roadbed as indicated in the cross section and according to Specifications.

Repair and re-pave Dotson Creek Road (Rt. 645).

See Asphalt Repair typical and Specifications for details.

Remove all loose and unstable material above the road up the slope to the scarp line as directed by the

Project Inspector. Cover any disturbed or regraded ground with

Erosion Control Blanket, revegetate.

Approx. 4.0'

Notch/Step Cut Line in five foot lifts.

8.0'

2.0'

Ditch 1 of6 13

Sheet Number:

D a t e j w f

C r o s s

S e c t i o n

D e s i g n e d

D r a w n j w f

D o t s

C r e e k

L a n d s l i d e

W I S

E

C

O U

N T

Y

V

I R

G I N

I A

S c a l e

R e v i s i o n s

N

B i g

S t o n e

G a p

V i r g i n i a

Legend

Existing Ground

Excavation Limit

SCALE:1"=20'

2010020

Class 1 Riprap

Geotextile Fabric

Class A1 Riprap

VDOT No. 1 Stone

Stream

Compact Fill

Proposed Grade

2120'

'22

'22

2150'

2160'

2170'

2180'

2190'

D o t s o n

C r e e k

R d

R

D o t s o n

C r e e k

2120'

'22

'22

'22

'22

'22

2180'

2170'

A

A

B

B

SF

SF

SF

SF

SF

SF

CIP

SF

SF

STB

STB

STB

SF

5/29/24

Date:

jwf

Erosion and Sediment Control 1: Excavation

Designed:

Drawn:

jwf

Dotson Creek Landslide

WISE COUNTY, VIRGINIA

Scale:

1" = 40'

Revisions:

N

Big Stone Gap, Virginia

(276) 523-8100

Legend

Contour(10')

Contour(2')

SCALE:1"=40'

4020040

Slide Area

Limit of Disturbance of

Sheet

Number:

Stream

Existing Drain Pipe

Cross Section

A

Underdrain

Proposed Drain Pipe

Proposed Contour(10')

Proposed Contour(2')

A'

Temporary Drain Pipe

Straw Bale Barrier

SF

Silt Fence

STB

General Construction Sequence

1. Install & Maintain silt fence & straw bale barrier.

2. Grade & Maintain Access routes as needed;

3. Install temporary culvert (Culvert 4).

4. Install Culverts 1-3

5. Excavate loose and unstable material from slide area. Haul to disposal area.

6. Remove existing drain pipes from slide area. Dispose of at landfill.

7. Install Underdrain (Drain 1).

8. Remove unstable material from the scarp embankment.

Scarp Area

Access Route

Culvert 1

Culvert 2

Drain 1

Remove existing drain pipes.

Culvert 4

Culvert 3 ð ð ð ð ð ð ð ð ð ð ð ð ð ð ð

2120'

'22

'22

2150'

2160'

2170'

2180'

2190'

D o t s o n

C r e e k

R d

R

D o t s o n

C r e e k

2120'

'22

'22

'22

'22

'22

2180'

2170'

A

A

B

B

PSMU

PS

PS

PS

PS

PS

PS

PSMU

B/M

B/M

B/M

B/M

B/M

B/M

B/M

B/M

PSMU

PSMU

PSMU

5/29/24

Date:

jwf

Erosion and Sediment Control 2: Backfill

Designed:

Drawn:

jwf

Dotson Creek Landslide

WISE COUNTY, VIRGINIA

Scale:

1" = 40'

Revisions:

N

Big Stone Gap, Virginia

(276) 523-8100 of

Sheet

Number:

Ditch 1

Drain 1

Legend

Contour(10')

Contour(2')

SCALE:1"=40'

4020040

Limit of Disturbance

Stream

Cross Section

A

Underdrain

Proposed Drain Pipe

Proposed Contour(10')

Proposed Contour(2')

A'

Permanent Seed

Mulch

Straw Bale Barrier

SF

Silt Fence

STB

MU

PS

General Construction Sequence

1. Install & Maintain temporary ESC items.

2. Backfill excavated area with Riprap Stone and coarse aggregate.

3. Regrade/stabilize up-slope embankment.

4. Install Riprap Buttress with approval from Project

Inspector.

5. Seed and prep up-slope embankment.

6. Install Erosion Control Blanket on up-slope embankment.

7. Install Ditch 1.

8. Remove temporary culvert (Culvert 4).

9. Repave Road according to plans and specs.

10. Remove all temporary ESC items.

11. Place mulch and permanent seeding over all disturbed areas.

Temporary Drain Pipe

Culvert 1

Culvert 2

B/M

Erosion Control Blanket

Access Route

Riprap Buttress

Culvert 3

Culvert 4

2300'

SF

SF

SF

SF

SF

SF

PS

MU

PS

MU

PS

MU

PS

MU

PS

MU

STB

SF

SF

PS

MU

PS

MU

Primary Disposal Area

Culvert 5

Haulroad of9 13

Sheet Number:

D a t e j w f

E r o s i

S d i m e n t

C o n t r o l

D i s p o s a l

A r e a

D e s i g n e d

D r a w n j w f

D o t s o n

C r e e k

R o a d

L a n d s l i d e

W I S

E

C

O U

N T

Y

V

I R

G I N

I A

S c a l e

N A

R e v i s i o n s

B i g

S t o n e

G a p

V i r g i n i a

N

Legend

Contour(25')

Contour(5')

SCALE:1"=60'

6030060

Limit of Disturbance

Temporary Culvert

Permanent Seed

Straw Bale Barrier

STB

PS

General Construction Sequence

1. Install & Maintain temporary ESC items.

2. Grade & Maintain access routes.

3. Install temporary culvert (Culvert 6).

4. Install Culvert 5 and Water Bars along haul road.

5. Maintain haulroad through construction.

6. Dispose excavated slide material;

spread evenly on the designated area.

7. Revegetate all disturbed areas.

8. Remove temporary ESC items.

Culvert 6

Secondary Disposal Area

Mulch

Silt Fence

SF

MU

Access Route

Disposal Area

W20-2 [East Bound Lane]

M4-8a [West Bound Lane] of10 13

Sheet Number:

D a t e j w f

T r a f f i c

C o n t r o l

P l a n

D e s i g n e d

D r a w n j w f

D o t s o n

C r e e k

R o a d

L a n d s l i d e

W I S

E

C

O U

N T

Y

V

I R

G I N

I A

S c a l e

R e v i s i o n s

B i g

S t o n e

G a p

V i r g i n i a

N

Legend

VDOT Road

SCALE:1"=100'

100050001000

Stream

Project Location

Route 645 Detour

R d

H u r r i c a n e

O l d

R d

H u r r i c a n e

R d

B i r c h f i e l d

R d

C re e k

R d

T u r k y

B a n c h

R d

G r e

H l l o w

R d

H u r r i c a n e

M4-V3R [East Bound Lane]

M4-9R [East Bound Lane]

R11-3a & M4-10R

[Corners of Intersection]

M4-9L

[East Bound Lane]

M4-9R

[South Bound Lane]

M4-9L

[North Bound Lane]

M4-9R

[South Bound Lane]

W20-3

"ROAD CLOSED 1000FT"

[East Bound Lane]

W20-3

"ROAD CLOSED 500FT"

[East Bound Lane]

2 x R11-2

Concrete Barriers at 45° angle

D o t s o n

2 x R11-2

Concrete Barriers at 45° angle

W20-3

"ROAD CLOSED 500FT"

[West Bound Lane]

W20-3

"ROAD CLOSED 1000FT"

[West Bound Lane]

W20-2

[South Bound Lane]

M4-VP1a

R11-V2

[South Bound Lane]

R11-3a & M4-10R

[Corners of Intersection]

M4-V1

[South Bound

Lane]

Notes:

1. Sign/barrier placement based on VDOT Typical Traffic Control

(TTC), Road Closure Operation with a Detour (Figure TTC-48.2)

2. Traffic Control Plan is subject to modification and final approval from the Virginia Department of Transportation (VDOT).

3. A Portable Changeable Message Sign (PCMS) shall be placed on each end of the Route 645 closure a minimum 2 weeks prior to initiating the detour for public communication.

4. See Specification No. 18 - Traffic Control and Appendix A for further details and notes.

VDOT #21B Stone

SECTION VIEW

1. HDPE pipe shall have 1' cover minimum.

2. All pipe is to be placed on a 3% grade minimum

3. All Solid HDPE Pipe shall be ADS N-12 Pipe or equivalent

Typical Culvert N.T.S.

Compacted Backfill

1' MIN

3" MIN

1' MIN

Rock Core Underdrain N.T.S.

1.5' MIN

VDOT Class 1 Riprap

3"

2.0' min

VDOT NO. 57

VDOT NO. 21B

1. Excavate trench along shortest flow route to stream.

2. Use VDOT No. 21B stone as bedding to create an even pipe grade. 1.5% minimum.

3. Cover pipe with VDOT No. 57 stone.

4. Place Riprap stone with care not to damage or crush drain pipe.

HDPE perforated pipe.

6" min

ISOMETRIC VIEW

CL ROAD30° to 45°

Existing Road Surface

Original Grade 1'

SECTION VIEW

8'Min.6'Min.10'Min.

Compacted Berm 1'

Water Bar N.T.S.

Direct flow into existing haulroad ditchline.

6" COUNTERSINK

VDOT No. 57 Stone

1. A MINIMUM OF 4" OF NO. 57 STONE IS TO BE PLACED

UNDER THE CULVERT.

2. PIPE SHALL NOT EXCEED 30 FEET IN LENGTH.

3. FILTER FABRIC SHALL BE MIRAFI 700X OR EQUIVALENT

HDPE @ S=1% GRADE MINIMUM

FILTER FABRIC

FILTER FABRIC

Culvert Profile

Roadbed Cross Section VDOT No. 57 Stone

Temporary Road Bed N.T.S.

2' MIN

V

H

V

H

Bottom

Width

VDOT Gabion Stone

20mil PVC

Geomembrane

Liner

1. Over excavate to allow placement of stone layer, which shall be

1.5 times the average rock diameter.

2. Spread Layer of Bentonite onto ditch bottom and banks.

3. Place a cover layer of soil back over the Bentonite.

4. Line Ditch with 20mil PVC Geomembrane Liner.

5. Line Ditch with VDOT Gabion Stone.

Top

Width

Bentonite

Depth

Soil Cover Layer

Rock-Lined Ditch N.T.S.

1. EXCAVATE THE TRENCH 2. PLACE AND STAKE

STRAW BALES.

Flow

Compacted soil to prevent piping

Binding wire or twine

Angle first stake toward previously laid bale.

3. WEDGE LOOSE STRAW

BETWEEN BALES.

4. BACKFILL AND COMPACT

THE EXCAVATED SOIL.

Straw Bale Barrier N.T.S.

FILTER FABRIC

3. BACKFILL AND

COMPACT THE

EXCAVATED SOIL.

1. SET POSTS 5' APART AND

EXCAVATE A 4" X 4" TRENCH

UPSLOPE ALONG THE LINE OF POSTS.

2. ATTACH THE FILTER FABRIC

TO THE POSTS AND EXTEND IT

INTO THE TRENCH.

Silt Fence N.T.S.

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D e t a i l s f

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D r a w n j w f

D o t s o n

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W I S

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G I N

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S c a l e

N A

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B i g

S t o n e

G a p

V i r g i n i a

1. COMPLETELY REMOVE ALL EXISTING ASPHALT DAMAGED DURING SLIDE WORK AND AT THE

DISCRETION OF THE PROJECT INSPECTOR.

2. GRADE AND COMPACT SUB-GRADE TO MATCH THE EXISTING SLOPE AND CURVATURE OF THE ROAD.

3. INSTALL GEOTEXTILE FABRIC OVER AGGREGATE SUBGRADE.

4. PLACE A 6" BASE LAYER OF VDOT NO. 21B, BASE AGGREGATE. PLACE AND COMPACT IN TWO 3" LIFTS.

5. PLACE 3" COMPACTED LAYER OF BASE MIX PAVEMENT, BM-25.0A.

6. PLACE A 2" COMPACTED LAYER OF SURFACE MIX PAVEMENT, SM-12.5E.

APPLICATION RATE: 220 LB/S.Y. A 25' TRANSITION TAPER MILL SHALL BE PERFORMED TO TIE NEW

PAVEMENT SURFACE INTO EXISTING.

7. SMOOTHLY TIE NEWLY PLACED ASPHALT INTO EXISTING ASPHALT ALONG CUT LINE.

8. REPAIR SHALL BE PERFORMED IN ACCORDANCE WITH VDOT ROAD AND BRIDGE SPECIFICATIONS, LATEST EDITION.

SUBGRADE SOIL

SURFACE ASPHALT, SM-12.5E

Base Aggregate, VDOT NO. 21B

Secondary Road Paving N.T.S.

BASE ASPHALT, BM-25.0A

SURFACE ASPHALT, SM-12.5E

Base Aggregate, VDOT NO. 21B

VDOT NO. 1 AGGREGATE

BASE ASPHALT, BM-25.0A

AGGREGATE SUBGRADESOIL SUBGRADE

GEOTEXTILE FABRIC

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Sheet Number:

D a t e j w f

D e t a i l

D e s i g n e d

D r a w n j w f

D o t s e e k

L a n d s l i d e

W I S

E

C

O U

N T

Y

V

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I A

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B i g

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SPEC.

NO.

SUMMARY OF QUANTITIES

DESIGN

QUANTITIES

DESCRIPTION UNIT

N/ALSMOBILIZATION

SITE PREPARATION LS N/A

Note: Not all quantities represent payable items. For pay items, see Bid Schedule.

3.B.i

VDOT CLASS I RIPRAP TON 4080

3.B.iv

3.B.v

3.B.vi

3.B.ii

VDOT CLASS AI RIPRAP TON 12300

3.B.iii

TON 85

TON 2000

VDOT GABION STONE

VDOT NO. 1 STONE

VDOT NO. 57 STONE

VDOT NO. 21B STONE

EXCAVATION

RIPRAP BACKFILL

TON

TON

YD

LS

N/A

Material

Ditch Schedule

Ditch

NO.

Bottom

Depth (ft)

Top

Width (ft) Length(ft)

Note: Ditch Schedule represents basic dimensions AFTER aggregate has been placed AND/OR final grading.

1 Gabion Stone 1.25 7.5 380

EROSION CONTROL BLANKET SY 1600

SILT FENCE FT 1100

STRAW BALE BARRIER FT 50

GEOTEXTILE FABRIC SY 1200

Width (ft)

0.0

RATIO

3:1

H:V

NO.

Culvert Schedule

1 12

(in)

Diameter

HDPE

Material

HDPE

Underdrain Schedule

Drain

NO.

1 40

[Minimum]

0.5

Length (ft) Width (ft)

1.5

Depth (ft)

Pipe Type

6" HDPE

Notes

(ft)

LengthCulvert

3 36HDPE 60

Notes

Rock Core Drain

4 18HDPE 60 Temporary Culvert/Armor Discharge w/ Riprap

12"Ø HDPE PIPE

11.B.iii(a)

FT 50

6"Ø HDPE PIPE13.B.i FT 80

STONE-LINED DITCH14 FT 340

20 mil PVC GEOMEMBRANE LINER14.B.i SY 135

SODIUM BENTONITE CLAY14.B.iii LB 6040

ASPHALT CONCRETE: Surface Mix15.B.ii TON 160

SURVEYS16 LS N/A

REVEGETATION17 AC 3.8

LIME17.C.i TON 7.6

FERTILIZER17.E.i LB 1140

TRAFFIC CONTROL LS N/A

CLEAN UP

QUALITY CONTROL

SAFETY PRECAUTIONS

FUGITIVE DUST CONTROL

5 18HDPE 30

6 8HDPE 20 Temporary Culvert

Armor Discharge with Riprap

Armor Discharge with Riprap

9.B.iv & 15.B.iv

RIPRAP BUTTRESS LS N/A

18"Ø HDPE PIPE

11.B.iii(b)

FT 30

36"Ø HDPE PIPE

11.B.iii(c)

FT 60

ASPHALT CONCRETE: Base Mix15.B.iii TON 180

HYDRAULIC HAMMER HR 50

FT 20

6.B.ii(a)

FT 60

6.B.ii(b)

8"Ø HDPE PIPE

18"Ø HDPE PIPE

Install VDOT EW-1 endwall on inlet and outlet

PRE-CAST ENDWALL12 EA 2

Hydraulic Cement Mortar

12.B.iv YD 0.5

3.B.vii

VDOT NO. 26 STONE TON 40

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D a t e j w f

D e t a i l

D e s i g n e d

D r a w n j w f

D o t s e e k

L a n d s l i d e

W I S

E

C

O U

N T

Y

V

I R

G I N

I A

S c a l e

N A

R e v i s i o n s

B i g

S t o n e

G a p

V i r g i n i a