S01 Attachment 2 Drawings - Giblert Creek 2021 Drawings 03-08-23.pdf

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Mingo County

UTILITY NOTIFICATION

"The Natural Resources Conservation Service makes no representation as to the existence or non-existence of any utilities at the construction site. Shown on these construction drawings are those utilities which have been identified. It is the responsibility of the contractor(s) to assure themselves that no hazard exists or damage will occur to utilities."

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1 Cover Sheet 2 Quantities and Construction Notes 3 Location Map 4 Alice Blankenship Site 2 5 James Lester Site 3 6 Timothy Thompson Site 4 7 7.5' Gabion Typical Section 8 7.5' Gabion with Vertical Front Face 9 Counterfort 10 Gabion Details 11 Foundation Preparation on Shallow

Bedrock 12 Gabion Typical Section with Rock

Foundation 13 Typical Channel Configuration Gabions

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%%ULOCATION MAP

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CLASS V

AutoCAD SHX Text DRAWINGS PREPARED UNDER THE AUTHORITY OF THE EMERGENCY WATERSHED PROTECTION ACT by the Natural Resources Conservation Natural Resources Conservation Service of the United States Department of the United States Department United States Department of Agriculture Gilbert Creek EWP Cline, Blankenship, Lester, and Thompson Sites Mingo County, West Virginia

AutoCAD SHX Text 2021 EWP STREAMBANK STABILIZATION MINGO County, West Virginia County, West Virginia BLANKENSHIP, LESTER, AND THOMPSON SITES COVER SHEET

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AutoCAD SHX Text Sheet Title

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* The area required for overlaps is not included in the quantity for geotextile.

Alice Blankenship 162 - 153 As Needed 630 210 259 James Lester 108 - 101 As Needed 396 132 168

Timothy Thompson 133 - 125 As Needed 504 168 210 Total 403 - 379 As Needed 1530 510 637

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13CONSTRUCTION NOTES

1. Call 811 to locate utilities prior to mobilization and excavation.

2. Access roads shall be restored to pre-construction condition or better.

3. All fences removed and/or damaged as a result of the contractor's operations shall be restored to a condition equal to or better than they existed before the start of work.

4. Soil compacted as a result of construction operations shall be loosened for a depth of 6-inches below the compacted soil layer and re-graded to blend with existing ground.

5. Provide sub-channel as shown on Typical Channel Bottom Configuration drawings.

6. While working in the stream all efforts will be made to reduce downstream impacts including keeping the excavator tracks elevated above flowing water. A diversion berm shall be established at the top of each stream access point to minimize surface water from flowing toward the stream.

7. Required pollution control measures shall be installed as needed in accordance with Pollution Control Specification 5.

8. Site access shall be off the main road and shall be in accordance with all West Virginia Department of Highways rules and guidelines. The contractor shall provide signage and flagmen for traffic control as required.

9. Excess material from the excavation & obstruction removal shall be wasted off-site in accordance with all local, state, & federal regulations and as approved by the NRCS representative in the field. Floodplains will not be allowed as waste areas under any circumstances. Waste areas shall be seeded according to construction specification 6, Seeding, Sprigging and Mulching.

10. The contractor shall provide approved fill as required to complete the work.

11. Trash, tires, & woody debris within the work limits shall be disposed of off-site in an approved landfill. The contractor shall be responsible for the landfill tipping fees.

12. All pipes encountered in the embankment shall be extended through the riprap and/or gabions with the same pipe material or better to the face of the slope or baskets.

13. Pipes 12" diameter and larger shall be encased in a minimum of 6" of concrete when passing through rock riprap. Concrete shall have a minimum compressive strength of 2500 psi.

14. The contractor shall maintain the cleanliness of public and private roads impacted by hauling operations during the duration of the work.

15. Starting location of baskets will be marked in the field.

16. Reshape stream banks at the upstream and downstream ends of gabion walls to transition to baskets.

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AutoCAD SHX Text Geotextile SY*

AutoCAD SHX Text Riprap Tons

AutoCAD SHX Text Gabions CY

AutoCAD SHX Text Earth Fill CY

AutoCAD SHX Text Foundation Prep Shallow Bedrock SF

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2021 EWP STREAMBANK STABILIZATION MINGO County, West Virginia County, West Virginia BLANKENSHIP, LESTER, AND THOMPSON SITES QUANTITIES AND CONSTRUCTION NOTES

© 2022 Microsoft Corporation © 2022 Maxar ©CNES (2022) Distribution Airbus DS

© 2021 Microsoft Corporation © 2021 Maxar ©CNES (2021) Distribution Airbus DS

Reconstructed Streambank

45' Gabion Wall 7.5' High

Exposed Section of Sewer Line

Access

13' Stream Bottom Width Min

84' Gabion Wall 7.5' High

19' Stream Width

Bridge to be Removed by Landowner Prior to the Start of Construction

Remove Existing Wall and Properly Dispose of Materials Landowner Does Not Want

See Note 11 on Sheet 2

Start Gabion Wall at Existing Masonary Wall Do not Disturb Existing Wall or Footer.

Modify End of Gabion as Needed.

Install Counterfort at Upstream and Downstream Ends

Location to be Determined in the Field by Engineer

Landowner to Remove Porch Prior to the Start of Construction

Access Off Main Road

16' Stream Width Min.

Access

Counterfort

Asphalt to be Removed Shall be Saw Cut

Extend All Pipes Through Wall

Remove Concrete Slabs from Creek See Note 11 on Sheet 2

17' Stream Width

AccessOff Main Road

CounterfortsLocation to be Determined in the Field by NRCS Representative

Planned Baskets to Adjoin Existing Gabion WallLace Planned Baskets to Existing Baskets Modify Top Row of Planned Baskets as Needed to

Match Height of Existing Baskets

Saw Cut Concrete Prior to Removal

Bridge to be Removed by LandownerPrior to Construction

Start Gabion Wall at Masonary Wall Do Not Disturb Masonary Wall or Footer

Alice Blankenship Site 2 N37.57010° W81.88788°

James Lester Site 3 N37.57321° W81.89038°

Timothy Thompson Site 4 N37.57372° W81.89071°

Install Gabion Wall with a Vertical Front Face

Install Counterfort at Upstream and Downstream Ends

Location to be Determined in the Field by Engineer

Install Gabions with Vertical Front Face and Transtion to Stepped Front Face Upstream ofBridge

Install Counterfort at Upstream andDownstream Ends Location to be Determined in the Field by Engineer

Existing Failed Gabions to be RemovedSee Note 11 on Sheet 2 Approximately 20 cy

Giblert Creek

Gilbert Creek Road

Route 13

Giblert Creek

Gilbert Creek Road

Route 13

Disconnected Gas Line

Pool to be Removed by Landowner Prior toConstruction

Gilbert Creek Road

Route 13

Thompson

Lester

Blankenship

Giblert Creek

Gilbert Creek Road

Route 13Gilbert Creek

105' Gabion Wall 7.5' High

Remove Concrete Sidewalk as Needed for Installation Saw Cut Concrete Prior to Removal

Cline

6.6'

6.7'

6.4'

6.1'

6'x3'4.5'x3' 3'x1.5'

2.0'

11.0'

Align Gabions as Staked in the Field by the NRCS Representative.

Do Not Disturb Existing Structure(s) See 7.5' Gabion Typical Section for Excavation Limits

66' Gabion Wall 7.5' High

Remove Existing Masonry Wall Within Planned Gabion Wall Footprint.See Note 11 on Sheet 2

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Feet 0 2000 4000

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2021 EWP STREAMBANK STABILIZATION MINGO County, West Virginia County, West Virginia BLANKENSHIP, LESTER, AND THOMPSON SITES LOCATION MAP

16' Stream Width Min.

Access

Counterfort

Asphalt to be Removed Shall be Saw Cut

Extend All Pipes Through Wall

Remove Concrete Slabs from Creek See Note 11 on Sheet 2

Install Counterfort at Upstream and Downstream Ends

Location to be Determined in the Field by Engineer

Giblert Creek

Gilbert Creek Road

Route 13

105' Gabion Wall 7.5' High

Do Not Disturb Existing Structure(s) See 7.5' Gabion Typical Section for Excavation Limits

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LEGEND

Construction Limits Toe of Stream Bank Water Line Sewer Line Gas Line Electric Line

*Features in this legend may or may not be present in the drawing.

E E E

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Site 2 Plan View N37.57010° W81.88788°

0 30 60

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2021 EWP STREAMBANK STABILIZATION MINGO County, West Virginia County, West Virginia BLANKENSHIP, LESTER, AND THOMPSON SITES ALICE BLANKENSHIP SITE 2

17' Stream Width

Access Off Main Road

Counterforts Location to be Determined in the

Field by NRCS Representative

Planned Baskets to Adjoin Existing Gabion Wall Lace Planned Baskets to Existing Baskets

Modify Top Row of Planned Baskets as Needed to Match Height of Existing Baskets

Saw Cut Concrete Prior to Removal

Bridge to be Removed by Landowner Prior to Construction

G

Start Gabion Wall at Masonary Wall Do Not Disturb Masonary Wall or Footer

Install Gabions with Vertical Front Face and Transtion to Stepped Front Face Upstream of Bridge

Disconnected Gas Line

Pool to be Removed by Landowner Prior to Construction

G ilbert Creek Road

Route 13

G iblert Creek

66' Gabion Wall 7.5' High

Remove Existing Masonry Wall Within Planned Gabion Wall Footprint.

See Note 11 on Sheet 2

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Site 3 Plan View N37.57321° W81.89038°

LEGEND

Construction Limits Toe of Stream Bank Water Line Sewer Line Gas Line Electric Line

*Features in this legend may or may not be present in the drawing.

E E E

W W W S S S G G G

Feet 0 20 40

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AutoCAD SHX Text 2021 EWP STREAMBANK STABILIZATION MINGO County, West Virginia County, West Virginia BLANKENSHIP, LESTER, AND THOMPSON SITES JAMES LESTER SITE 3

Drawing Name

84' Gabion Wall 7.5' High

19' Stream Width

Bridge to be Removed by Landowner Prior to the Start of Construction

Remove Existing Wall and Properly Dispose of Materials Landowner Does Not Want

See Note 11 on Sheet 2

Start Gabion Wall at Existing Masonary Wall Do not Disturb Existing Wall or Footer.

Modify End of Gabion as Needed.

Install Counterfort at Upstream and Downstream Ends

Location to be Determined in the Field by Engineer

Landowner to Remove Porch Prior to the Start of Construction

Access Off Main Road

Bridge to be Removed by Landowner

Install Gabion Wall with a Vertical Front Face

G ilbert Creek Road

Route 13G ilbert Creek

Remove Concrete Sidewalk as Needed for Installation Saw Cut Concrete Prior to Removal

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LEGEND

Construction Limits Toe of Stream Bank Water Line Sewer Line Gas Line Electric Line

*Features in this legend may or may not be present in the drawing.

E E E

W W W S S S G G G

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Site 4 Plan View N37.57372° W81.89071°

0 30 60

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2021 EWP STREAMBANK STABILIZATION MINGO County, West Virginia County, West Virginia BLANKENSHIP, LESTER, AND THOMPSON SITES TIMOTHY THOMPSON SITE 4

5.5' 9.5

6°

Geotextile

Provide Positive Drainage

Finished Grade Stream Bottom

2' Min. Embedment or to Bedrock, Whichever is Less

If Bedrock is Less than Two Feet, then See Foundation Preparation on Shallow

Bedrock ( Rebar Anchoring Detail)

6'x3'

4.5'x3'

1.5'

1.5'

1' Minimum

7"

Excavation Limits, Backfill After Gabion

Installation

12x3x1.5

2.0' Min.

Excavation Limits Backfill After Gabion Installation

Top Row May Need to be Removed in Situations Where Stream Bottom Prevents Embedment

TYPICAL GABION WALL 7.5 FEET HIGH

(Not to Scale)

Wrap Top of Baskets with Geotextile and Cover with Top Soil when Top of Wall is Low Enough to Provide Positive Drainage

Finished Grade

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1. See typical channel bottom configuration sheet

2. Refer to sheet 2 for estimated quantities

3. After the foundation is excavated, NRCS representative will determine required foundation treatment. See foundation details on other sheets.

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2021 EWP STREAMBANK STABILIZATION MINGO County, West Virginia County, West Virginia BLANKENSHIP, LESTER, AND THOMPSON SITES 7.5' GABION TYPICAL SECTION

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5.5' 9.5

6°

Geotextile

Provide Positive

Drainage

Finished Grade Stream Bottom

2' Min. Embedment or to Bedrock, Whichever is Less

If Bedrock is Less than Two Feet, then See Foundation Preparation on Shallow

Bedrock ( Rebar Anchoring Detail)

6'x3'

4.5'x3'

1.5'

1.5'

1' Minimum

7"

Excavation Limits, Backfill After Gabion

Installation

3'x1.5'

7.5' GABION WALL WITH VERTICAL FRONT FACE

LESTER AND THOMPSON SITES

SEE PLAN VIEWS

(Not to Scale)

Excavation Limits Backfill After Gabion Installation

Top Row May Need to be Removed in Situations Where Stream Bottom Prevents Embedment

2.0' Min.

Wrap Top of Baskets with Geotextile and Cover with Top Soil when Top of Wall is Low Enough to Still Provide Positive Drainage

Finished Grade

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1. See typical channel bottom configuration sheet

2. Refer to sheet 2 for estimated quantities

3. After the foundation is excavated, NRCS representative will determine required foundation treatment. See foundation details on other sheets.

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2021 EWP STREAMBANK STABILIZATION MINGO County, West Virginia County, West Virginia BLANKENSHIP, LESTER, AND THOMPSON SITES 7.5' GABION WITH VERTICAL FRONT FACE

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6'

12'

9'

TYPICAL COUNTERFORT DETAILS

7.5 FT. GABION WALL

(Not to Scale)

1.5'

1.5'

1.5' 9'

Counterfort

1.5'

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1. Refer to Quantities & Notes Sheet for estimated quantities

2. 8 counterfort(s) required at approximate locations shown on the plan view(s). The final locations of counterforts will be determined in the field by Engineer.

3. See gabion typical section for additional details

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2021 EWP STREAMBANK STABILIZATION MINGO County, West Virginia County, West Virginia BLANKENSHIP, LESTER, AND THOMPSON SITES COUNTERFORT

3'

4.5'

6'

Layer 1

Layer 2

Layer 3

Layer 3 Layer 2 Layer 1

6' 4.5' 3'

Fr on t F ac e

Fr on t F ac e

Fr on t F ac e

6' 4.5' 3'

12' 12' 12'

6x3x1.5

6x3x3

7.5' Wall as Example

3' Wall Base6' Wall Base9' Wall Base

Gabion Wall Base Layout No Scale

Gabion Wall Isometric No Scale

12x4.5x3

(1 2, 9, or

)x

3x 1.

5'

(1 2, or

)x

4.

5x

3'

1/3 H

1/3 H

1/3 H

1/3 L 1/3 L

1/3 L 1/3 W

1/3 W 1/3 W

INTERIOR SUPPORT DETAIL

LACING DETAIL

1. Each vertical seam shall be laced prior to setting basket in place and prior to lacing to adjoining baskets.

2. Each basket shall be laced to the adjoining basket at all vertical edges and horizontal edges.

3. Each diaphragm shall be laced to the lid of the basket after closing. Diaphragm shall be laced along all sides.

4. All lacing shall be done with 13.5 gauge wire using the two, one, two, looping procedure as shown in the lacing detail.

5. All wire shall be tightly laced and the ends of the lacing wire shall be doubled back and twisted not less than three turns around itself in a length not greater than one inch.

6. Welded wire baskets shall be laced with spiral binders according to manufacturers recomendations.

7. Install according to manufacturers recommendations.

5" 5"

Wire Doubled Back and Twisted

Horizontal Edge

Vertical Seam

Horizontal Edge

6x3x3'

6x3x3'

6x3x3'

6x3x3'

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2021 EWP STREAMBANK STABILIZATION MINGO County, West Virginia County, West Virginia BLANKENSHIP, LESTER, AND THOMPSON SITES GABION DETAILS

Bedrock

Foot Print of Planned Gabions & Rebar/Drillhole Pattern

1' Max

Varies

Front Face of Proposed Gabions with Rebar Spacing

1' Max

1' Min to 1.5' Max

1' Min to 1.5' Max Typical Each Side

Side View of Proposed Gabions with Rebar Spacing

Maximum Angle of Rebar/Drillhole Pattern

15°'

Back of BasketFront of Basket

Bedrock

Bedrock

Vertical No. 10 Rebar Max Tilt of Rebar/Drillhole

Back of BasketFront of Basket BackfillStreamside

0' to 2' Max

Stream Bottom

0' to 2.0' Max

Notes:

1. Drill holes for Rebar shall be 1 3/8" diameter. The use of epoxy or non-shrink grout is not required. The rebar shall be driven by hammer to the required depth without bending.

2. Care shall be taken by the contractor to prevent damage to the rebar during gabion filling operations.

3. Different gabion bottom basket configurations will require additional rebar by repeating the pattern shown.

Foundation Preparation Payment Limits

Varies

Varies

Stream Bottom

1.25'No. 10 Rebar Typical

1.25' 1.25'

No. 10 Rebar Typical

2.5' Max.

1.25'

2.5' Max.

2.5' Max. 2.5' Max.

Foundation Preparation

Payment Limits4.5'

2.5'

1.5'

Varies

2.5'

No. 10 Rebar

~1.5'

~2.5'

FOUNDATION PREPARATION on SHALLOW BEDROCK (Use When Bedrock is Less than Two Feet From Stream Bottom)

(No Scale)

1' Min to 1.5' Max

1.5'

2.5'

Note: Final pattern and spacing to be directed by NRCS technician in the field.

Finished Grade

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2021 EWP STREAMBANK STABILIZATION MINGO County, West Virginia County, West Virginia BLANKENSHIP, LESTER, AND THOMPSON SITES FOUNDATION PREPARATION ON SHALLOW BEDROCK

5.5' 9.5

6°

Geotextile

Provide Positive

Drainage

Finished Grade Stream Bottom

6'x3'

4.5'x3'

1.5'

1.5'

7"

12x3x1.5

Gabion Section on Riprap Foundation

Depth of Rock of Foundation to be Determined by NRCS Representative in Field. Max Depth of 3'.

12' Foundation Preparation

Payment Limits

Rock Riprap Foundation Preparation 6"-18" Gradation

3' Min.

Geotextile

Excavation Limits, Backfill After Gabion

Installation

3' Min.

Fill Voids on Surface of Riprap with Gabion Stone to Provide Smooth Surface for Gabions

Excavation Limits

2.0'

Finished Grade

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Notes:

1. See typical channel bottom configuration sheet.

2. Refer to Sheet 2 for estimated quantities.

3. Actual gabion configuration may vary.

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2021 EWP STREAMBANK STABILIZATION MINGO County, West Virginia County, West Virginia BLANKENSHIP, LESTER, AND THOMPSON SITES GABION TYPICAL SECTION WITH RIPRAP FOUNDATION

Notes:

1. Final location of subchannel to be located in the field by the NRCS representative. The subchannel shall be transitioned as necessary to meet existing grades at the upstream and downstream site extents.

2. Subchannels are not required for bedrock streambeds.

3. Use material from the required excavations and/or approved fill from offsite to reconstruct streambanks as necessary. Seed and mulch per construction specification 6, Seeding, Sprigging and Mulching.

4. Actual gabion configuration and height may vary.

Varies

1/3 BW

~ 1

(See Site Plan)

Provide Positive Drainage

~2

~1

~1

Final Stream Bottom Shall be Rough & Irregular Provide Positive Drainage Toward Subchannel Deposition (Varies)

Existing Groundline

Subchannel

Bottom Width (BW)

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ALL SITES TYPICAL CHANNEL BOTTOM CONFIGURATION

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2021 EWP STREAMBANK STABILIZATION MINGO COUNTY, WEST VIRGINIA COUNTY, WEST VIRGINIA