J_02_191BWC19B0002_Vado_Drawings_20190808_HS.pdf

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26466

TITLE SHEET

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CONTRACT NUMBER

P l o t

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V e r s i o n

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V a d o C o l o r d w g

IBWC Border V20170817

S h e e t S e t

N a m e

191BWC19B0002

ADMIN APPROVAL

DESIGNED

TECHNICAL APPROVAL

CHECKED

DRAWN

Crystal Cadillo, PE

Elizabeth Verdecchia

Andrea Glover

Andrea Glover, PE

08-08-2019

CA

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VICINITY MAP

N.T.S

PROJECT LOCATION

DOÑA ANA

COUNTY

NEW

MEXICO

GENERAL LOCATION MAP

N.T.S

TEXAS

MEXICO

T

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MEXICO

NEW

Las Cruces

El Paso

Project Location

INTERNATIONAL BOUNDARY AND WATER COMMISSION

UNITED STATES SECTION

VADO WEST FLOODPLAIN REPAIR

DOÑA ANA COUNTY, NEW MEXICO

PROJECT LOCATION MAP

N.T.S

SHEET INDEX

NUMBER SHEET DRAWING TITLE NUMBER SHEET DRAWING TITLE

26466 1 Title Sheet 26472 7

Typical Section B

26467 2

General Project Layout

26473 8

Typical Section C

26468 3 Plan View 1 26474 9

Typical Section D

26469 4 Plan View 2 26475 10 Gabion Details

26470 5 Plan View 3 26476 11

Upstream Riparian Planting Area

26471 6

Typical Section A

26477 12

Downstream Riparian Planting Area

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26467

GENERAL PROJECT

LAYOUT

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V a d o C o l o r d w g

IBWC Border V20170817

S h e e t S e t

N a m e

191BWC19B0002

ADMIN APPROVAL

DESIGNED

TECHNICAL APPROVAL

CHECKED

DRAWN

Crystal Cadillo, PE

Elizabeth Verdecchia

Andrea Glover

Andrea Glover, PE

08-08-2019

CA

AZ

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0 24060 120

GENERAL NOTES:

1. Coordinates are based upon New Mexico State Plane

Coordinate Grid System (NMPCGS) central zone, North

American Datum of 1983 (NAD83) in US feet. Elevations are based upon North American Vertical Datum of 1988 (NAVD88) in US feet.

2. All imagery data from DigitalGlobe, Inc. and provided under license to the US Government.

3. Aerial photos dated July 15, 2019.

4. Flows within the Rio Grande will have changed the site since the date of the aerial photos.

5. The site has not been surveyed. Coordinates provided are approximate.

6. Stakeout alignment in the field and confirm layout with COR prior to proceeding with any ground disturbing activities.

7. Salt cedar may be removed from any location within the project area. Dispose of salt cedar per Technical Specification

01.74.19.

8. Except when removal of willows is required for construction of gabions, existing willows shall be protected in place as much as possible.

9. See Technical Specifications Figure 7 for island locations where willows may be harvested.

10. Drawings 26467, 26468, 26469, 26470, 26476, and 26477 must be printed in color to be valid.

401,590 N

1,513,288 E to Vado Bridge

Fill and upstream planting area

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Fill and downstream planting area

Fill

399,461 N

1,514,480 E f t f t

S f t

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A

N

D

E to Vado Bridge to Berino Bridge to Berino Bridge

399,660 N

1,514,455 E

399,918 N

1,514,348 E

Easement for high voltage power lines

Gabion alignment

8/8/2019

S

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6 ft tall Gabions

9 ft tall Gabions

Reno mattresses

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26468

PLAN VIEW 1

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V a d o C o l o r d w g

IBWC Border V20170817

S h e e t S e t

N a m e

191BWC19B0002

ADMIN APPROVAL

DESIGNED

TECHNICAL APPROVAL

CHECKED

DRAWN

Crystal Cadillo, PE

Elizabeth Verdecchia

Andrea Glover

Andrea Glover, PE

08-08-2019

CA

AZ

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401,590 N

1,513,288 E

Fill and upstream planting area

R

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NOTES:

1. Willow trenches not shown for clarity.

2. Riparian planting not shown for clarity.

3. Gabions drawn as 3 ft x 12 ft, but gabions 6, 9, 12, or 15 feet long may be used.

4. Reno mattresses drawn as 6 ft x 12 ft, but 3 ft x 12 ft mattresses may also be used.

5. See Drawing 26476 for planting area details.

6. Drawing only valid if printed in color.

45°

60'

72'

Start Reno mattresses once clear of existing willows

Angle tieback gabions behind existing willows.

Avoid disturbing willows as much as possible.

Additional erosion may require that the transition from 6 ft to 9 ft tall gabions be moved downstream. Coordinate with COR to determine specific location for change.

108'

135°

26474

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26474

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8/8/2019

Reno mattresses

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26469

PLAN VIEW 2

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V a d o C o l o r d w g

IBWC Border V20170817

S h e e t S e t

N a m e

191BWC19B0002

ADMIN APPROVAL

DESIGNED

TECHNICAL APPROVAL

CHECKED

DRAWN

Crystal Cadillo, PE

Elizabeth Verdecchia

Andrea Glover

Andrea Glover, PE

08-08-2019

CA

AZ

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WEST LEVEE O&M ROAD

0 6015 30

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Fill area

RIO GRANDE

NOTES:

1. Willow trenches not shown for clarity.

2. Gabions drawn as 3 ft x 12 ft, but gabions 6, 9, 12, or 15 feet long may be used.

3. Reno mattresses drawn as 6 ft x 12 ft, but 3 ft x 12 ft mattresses may also be used.

4. Drawing only valid if printed in color.

26473

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26473

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26472

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RIO GRANDE

Reno mattresses

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26470

PLAN VIEW 3

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V a d o C o l o r d w g

IBWC Border V20170817

S h e e t S e t

N a m e

191BWC19B0002

ADMIN APPROVAL

DESIGNED

TECHNICAL APPROVAL

CHECKED

DRAWN

Crystal Cadillo, PE

Elizabeth Verdecchia

Andrea Glover

Andrea Glover, PE

08-08-2019

CA

AZ

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Fill and downstream planting area

RIO GRANDE

NOTES:

1. Willow trenches not shown for clarity.

2. Riparian planting not shown for clarity.

3. Gabions drawn as 3 ft x 12 ft, but gabions 6, 9, 12, or 15 feet long may be used.

4. Reno mattresses drawn as 6 ft x 12 ft, but 3 ft x 12 ft mattresses may also be used.

5. See Drawing 26477 for planting area details.

6. Drawing only valid if printed in color.

Stop Reno mattresses before existing willows

Coordinate location for change from 6 ft tall to 9 ft tall gabions with COR prior to installing tie back gabions.

D

D

E

A

V

A

D

399,461 N

1,514,480 E

399,660 N

1,514,455 E

399,918 N

1,514,348 E

Fill area

24'

Angle tieback gabions to avoid existing willows

36'

C

C

Easement for power line

R

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3' 20'

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SOLICITATION/RFP NUMBER

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International Boundary & Water Commission

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V a d o B

W d w g

IBWC Border V20170817

S h e e t S e t

N a m e

08-08-2019

191BWC19B0002

ADMIN APPROVAL

DESIGNED

TECHNICAL APPROVAL

CHECKED

DRAWN

Crystal Cadillo, PE

Elizabeth Verdecchia

Andrea Glover

Andrea Glover, PE

NOTES:

1. 20 ft width for 3 willow transplant trenches is approximate. Contractor's equipment may require more or less spacing between trenches.

2. Minimum width of trenches dependent upon bucket size of Contractor's equipment.

3. Install geotextile, Reno mattresses, and gabions prior to transplanting willows into adjacent trench.

Avg 8'-9"

Estimated 1' to groundwater

LEVEE

LEVEE

Levee toe

Approximate existing ground

A

26476

TYPICAL SECTION - EXCAVATION

No Willows on Floodplain

A

26476

TYPICAL SECTION - GABIONS & FILL

No Willows on Floodplain

Approximate existing ground

Gabion alignment

See Drawing 26467

Minimum excavation

Backfill for trenches

Do not survey per Technical

Specification Section 31.23.23

Gabions

Reno mattress

0 8020 40

Ensure willow trenches reach groundwater

CA

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Gabion alignment

See Drawing 26467

Transplanted willows

FLOODPLAIN

FLOODPLAIN

Finish top of trenches to match existing ground Match final grade to top of gabion

8/8/2019

26471

TYPICAL SECTION A

V A

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USIBWC HQ-ESD

Geotextile

26475

3' 20'

3' 20'

I B

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B

W c t b

26472

TYPICAL SECTION B

V A

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F L O

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F i l e n a m e

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International Boundary & Water Commission

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V a d o B

W d w g

IBWC Border V20170817

S h e e t S e t

N a m e

08-08-2019

191BWC19B0002

ADMIN APPROVAL

DESIGNED

TECHNICAL APPROVAL

CHECKED

DRAWN

Crystal Cadillo, PE

Elizabeth Verdecchia

Andrea Glover

Andrea Glover, PE

LEVEE

LEVEE

B

26469

TYPICAL SECTION - EXCAVATION

Existing Willows on Floodplain

B

26469

TYPICAL SECTION - GABIONS & FILL

Existing Willows on Floodplain

Avg 8'-9"

Estimated 1' to groundwater

Levee toe

NOTES:

1. In areas where existing willows are still in place after excavating for gabions, only 2 willow transplant trenches are required.

2. 20 ft width for 3 willow transplant trenches is approximate. Contractor's equipment may require more or less spacing between trenches.

3. Minimum width of trenches dependent upon bucket size of Contractor's equipment.

4. Install geotextile, Reno mattresses, and gabions prior to transplanting willows into adjacent trench.

Approximate existing ground

Approximate existing ground

Gabion alignment

See Drawing 26467

Minimum excavation

Transplanted willows

Backfill for trenches

Do not survey per Technical

Specification Section 31.23.23

Gabions

Reno mattress

0 8020 40

Ensure willow trenches reach groundwater

CA

AZ

N V

N M

TX

O K

SO

N

O

RA

CH

IH

U

AH

U A

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A

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JA CA N

BA

JA

CA

S

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O

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DU

RA

N

GO

N

U N

I T E D

S T A

T E

S

Gabion alignment

See Drawing 26467

Existing willows

Existing willows

FLOODPLAIN

FLOODPLAIN

Finish top of trenches to match existing ground

Geotextile

B

W C

B

W c t b

26473

TYPICAL SECTION C

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SHEET 8 of 12

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United States Section

SOLICITATION/RFP NUMBER

s

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S

T e c h

P l o t

S t y l e

T a b l e

N a m e

P a p e r

S i z e

C A

D

F i l e n a m e

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D

C

B

A

International Boundary & Water Commission

D

C

B

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S a v e d

P

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V a d o B

W d w g

IBWC Border V20170817

S h e e t S e t

N a m e

08-08-2019

191BWC19B0002

ADMIN APPROVAL

DESIGNED

TECHNICAL APPROVAL

CHECKED

DRAWN

Crystal Cadillo, PE

Elizabeth Verdecchia

Andrea Glover

Andrea Glover, PE

LEVEE

LEVEE

C

TYPICAL SECTION - EXCAVATION

No Excavation to Place Gabions

C

TYPICAL SECTION - GABIONS & FILL

No Excavation to Place Gabions

Avg 8'-9"

Estimated 1' to groundwater

Levee toe

NOTES:

1. 20 ft width for 3 willow transplant trenches is approximate. Contractor's equipment may require more or less spacing between trenches.

2. Install geotextile, Reno mattresses, and gabions prior to transplanting willows and backfilling.

3. Backfill quantities shall be surveyed when filling eroded areas per

Technical Specification Section 31.23.23.

Approximate existing ground

Approximate existing ground

Gabion alignment

See Drawing 26467

Minimum excavation

Transplanted willows

Grade backfill to match existing bank

Gabions

Reno mattress

0 8020 40

Ensure willow trenches reach groundwater

CA

AZ

N V

N M

TX

O K

SO

N

O

RA

CH

IH

U

AH

U A

CO

AH

U

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A

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JA CA N

BA

JA

CA

S

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O

N

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N

GO

N

U N

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S T A

T E

S

Gabion alignment

See Drawing 26467

Backfill

Survey per Technical

Specification Section 31.23.23

FLOODPLAIN

FLOODPLAIN

Match finished grade to top of gabions

B

W C

B

W c t b

26474

TYPICAL SECTION D

V A

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SHEET 9 of 12

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s

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T a b l e

N a m e

P a p e r

S i z e

C A

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F i l e n a m e

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International Boundary & Water Commission

D

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P l o t t e d

P

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D a t e

L a s t

S a v e d

P

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V a d o B

W d w g

IBWC Border V20170817

S h e e t S e t

N a m e

08-08-2019

191BWC19B0002

ADMIN APPROVAL

DESIGNED

TECHNICAL APPROVAL

CHECKED

DRAWN

Crystal Cadillo, PE

Elizabeth Verdecchia

Andrea Glover

Andrea Glover, PE

FLOODPLAIN

D

TYPICAL SECTION - EXCAVATION

Riparian Planting Areas

D

TYPICAL SECTION - GABIONS & FILL

Riparian Planting Areas

0 10025 50

Avg 8'-9"

Estimated 1' to groundwater

Approximate existing ground

NOTES:

1. 20 ft width for 3 willow transplant trenches is approximate. Contractor's equipment may require more or less spacing between trenches.

2. Install geotextile, Reno mattresses, and gabions prior to transplanting willows and backfilling.

3. Shrubs per Technical Specifications Section 32.93.33 and trees per

Section 32.93.43 not shown. See Drawings 26476 and 26477 for these items.

4. Grade planting areas with slope to western floodplain bank whenever possible. Low area may be created if planting area is too wide to accommodate a constant slope from gabions to wattles.

5. Ensure planting area is graded so that it does not drain to river.

6. Use wattles to stair step elevation change from planting area to 9 ft tall gabions and to undisturbed floodplain bank.

7. Backfill quantities shall be surveyed when filling eroded areas per

Technical Specification Section 31.23.23.

Gabion alignment

See Drawing 26467

Minimum excavation

Transplanted willows

6" Topsoil

Gabions

Reno mattress

Ensure willow trenches reach groundwater

FLOODPLAIN

Backfill

Survey per Technical

Specification Section 31.23.23

Possible low area to ensure planting area does not drain to river. See Note 3.

26475

Wattles

CA

AZ

N V

N M

TX

O K

SO

N

O

RA

CH

IH

U

AH

U A

CO

AH

U

IL

A

BA

JA CA N

BA

JA

CA

S

LE

O

N

DU

RA

N

GO

N

U N

I T E D

S T A

T E

S

Gabion alignment

See Drawing 26467

Match finished grade to top of gabions

12'

6'

I B

W C

B

W c t b

26475

GABION DETAILS

V A

S

T

L

E V

W

F L O

O D

P L A

P

A I R

F O

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C

O N

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A

N D

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C

A N

A L

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I O

N

P

R O

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C T

USIBWC HQ-ESD

A N

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F u l l

B l e e

I n c h e s

D W

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T o

P

D F p c

SHEET 10 of 12

3 4 5

2 3 4

United States Section

SOLICITATION/RFP NUMBER

s

L M

S

T e c h

P l o t

S t y l e

T a b l e

N a m e

P a p e r

S i z e

C A

D

F i l e n a m e

1 2

D

C

B

A

International Boundary & Water Commission

D

C

B

A

IN

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RN

AT

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B

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A

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CONTRACT NUMBER

P l o t

S c a l e

P l o t

D e v i c e

A u t o C r s i o n

I N

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N

A

T

I

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N

A

L

B

O

U

N

D

A R

Y A N

D

W

A

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E

R

C

O

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M

I S

S

I O

N

C

O

I

M

O

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S

N

C

A

R

N

T

E

N

I

D

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LA

N

O I

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M

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L

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A

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S

A

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D a t e a n d

T i m e

P l o t t e d

P

M

D a t e

L a s t

S a v e d

P

M

V a d o B

W d w g

IBWC Border V20170817

S h e e t S e t

N a m e

08-08-2019

191BWC19B0002

ADMIN APPROVAL

DESIGNED

TECHNICAL APPROVAL

CHECKED

DRAWN

Crystal Cadillo, PE

Elizabeth Verdecchia

Andrea Glover

Andrea Glover, PE

20 inch Wattles per Technical

Specification Section 31.25.14

Match top of gabion to existing ground elevation

E

26468

TYPICAL SECTION - TIEBACK GABIONS & FILL

Gabion Tiebacks into Floodplain

26474

DETAIL-WATTLES

26471

DETAIL-GABIONS & MATTRESSES

Typical Details

E

26468

TYPICAL SECTION - TIEBACK EXCAVATION

Gabion Tiebacks into Floodplain

No geotextile around gabions in tiebacks

While there is no compaction percentage that has to be met for backfill, Contractor shall ensure that backfill is tight and firm around gabions.

Pushing backfill soil into gabions is allowable.

Excavation shown assumes that trench box or shoring is not used. If either is used, only excavate what is required to place gabions.

Approximate existing ground

Gabion alignment

See Drawing 26467

CA

AZ

N V

N M

TX

O K

SO

N

O

RA

CH

IH

U

AH

U A

CO

AH

U

IL

A

BA

JA CA N

BA

JA

CA

S

LE

O

N

DU

RA

N

GO

N

U N

I T E D

S T A

T E

S

Backfill for tie backs

Do not survey per Technical

Specification Section 31.23.23

Place extra topsoil to support bottom of wattle

3' 3'

Use wattles to transition from lower planting areas to 9 ft tall gabions and to existing, undisturbed floodplain banks

Stop geotextile 3 inches from top of gabion and ensure that all geotextile is properly buried

Place geotextile between gabions and backfill along river

Fasten gabions and Reno mattresses together per Technical Specifications and manufacturer recommendations

Fill gabions and Reno mattresses with stone prior to backfilling behind them

Match top of Reno mattress with existing river bed elevation

After Reno mattresses and bottom gabion are complete, closed, and COR has provided clearance, spread river channel soil over mattresses. The fine material shall be spread so that all voids between stones are filled.

Approximate existing ground

FLOODPLAIN

FLOODPLAIN

8/8/2019

Width dependent upon safe access during gabion installation

Do not fasten Reno mattresses to each other in this area

Wattle stakes not shown

Reno mattresses

Three leaf sumac (skunkbush)

New Mexico olive

Desert willow

Desert false indigo

Seepwillow (mule fat)

Shrub seeding area

Wattles

Cottonwood

Willow trenches

I B

W C

C o l o r c t b

26476

UPSTREAM RIPARIAN

PLANTING AREA

V A

S

T

L

E V

W

F L O

O D

P L A

P

A I R

F O

R

C

O N

S T

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I O

N

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A

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E

C

A N

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A T

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N

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C T

USIBWC HQ-ESD

A N

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F u l l

B l e e

I n c h e s

D W

G

T o

P

D F p c

SHEET 11 of 12

3 4 5

2 3 4

United States Section

SOLICITATION/RFP NUMBER

s

L M

S

T e c h

P l o t

S t y l e

T a b l e

N a m e

P a p e r

S i z e

C A

D

F i l e n a m e

1 2

D

C

B

A

International Boundary & Water Commission

D

C

B

A

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RN

AT

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N

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B

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DA

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A

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C R

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N

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I S

I O

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I G

N A

T U

D

E S

I G

N E

R

A

T

E

CONTRACT NUMBER

P l o t

S c a l e

P l o t

D e v i c e

A u t o C r s i o n

D a t e a n d

T i m e

P l o t t e d

P

M

D a t e

L a s t

S a v e d

P

M

V a d o C o l o r d w g

IBWC Border V20170817

S h e e t S e t

N a m e

191BWC19B0002

ADMIN APPROVAL

DESIGNED

TECHNICAL APPROVAL

CHECKED

DRAWN

Crystal Cadillo, PE

Elizabeth Verdecchia

Andrea Glover

Andrea Glover, PE

08-08-2019

CA

AZ

N V

N M

TX

O K

SO

N

O

RA

CH

IH

U

AH

U A

CO

AH

U

IL

A

BA

JA CA N

BA

JA

CA

S

LE

O

N

DU

RA

N

GO

N

U N

I T E D

S T A

T E

S

0 6015 30

NOTES:

1. Planting area shown is estimated based upon July 2019 aerial photo.

Actual planting area will vary. Planting area encompasses all fill area between gabions and existing, full height floodplain bank.

2. Plant shrubs of the types indicated in groups of 3 to 5 plants. Space shrubs as noted in Technical Specification 32.93.33.

3. Gooding's willow (black willow) poles not shown. Plant Gooding's willow poles throughout area maintaining spacing noted in Technical

Specification 32.93.43.

4. Cottonwood pole locations are generalized. Ensure that cottonwoods are spaced at least 100 feet apart.

5. Seed shrubs per Technical Specification Section 32.93.33 within the shaded area. Seed whole planting area per Technical Specification

Section 32.92.19.

6. Gooding's willow poles, coyote willow poles, and cottonwood poles may be used in lieu of wood stakes to secure wattles.

7. Cover entire planting area from western most wattle to gabions with 6 inches of topsoil. See Typical Section D for reference.

8. Grade planting area to slope toward wattles. If planting area is too wide to allow constant slope toward western edge, Contractor may install up to a 1 foot deep low area in the center of the widest portion.

9. Drawing only valid if printed in color.

401,590 N

1,513,288 E

Use wattles to stair step bank elevation change between

9 ft and 6 ft gabions.

RIO GRANDE

W

E

V

A

D

Possible low area to ensure planting area does not drain to river.

See Note 8.

Shrub seeding area

Use wattles to stair step bank elevation change between

9 ft and 6 ft gabions.

26471

A

26471

A

26474

D

26474

Reno mattresses

1 Three leaf sumac (skunkbush)

2 New Mexico olive

3 Desert willow

4 Desert false indigo

5 Seepwillow (mule fat)

Shrub seeding area

Wattles

Cottonwood

Willow trenches

I B

W C

C o l o r c t b

26477

DOWNSTREAM RIPARIAN

PLANTING AREA

V A

S

T

L

E V

W

F L O

O D

P L A

P

A I R

F O

R

C

O N

S T

R U

C T

I O

N

R

A

N D

E

C

A N

A L

I Z

A T

I O

N

P

R O

J E

C T

USIBWC HQ-ESD

A N

S I

F u l l

B l e e

I n c h e s

D W

G

T o

P

D F p c

SHEET 12 of 12

3 4 5

2 3 4

United States Section

SOLICITATION/RFP NUMBER

s

L M

S

T e c h

P l o t

S t y l e

T a b l e

N a m e

P a p e r

S i z e

C A

D

F i l e n a m e

1 2

D

C

B

A

International Boundary & Water Commission

D

C

B

A

IN

TE

RN

AT

IO

N

AL

B

O U

N

DA

RY

A

N D

W

AT

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O D

E S

C R

I P

T I O

N

O

F

R

E V

I S

I O

N S

I G

N A

T U

D

E S

I G

N E

R

A

T

E

CONTRACT NUMBER

P l o t

S c a l e

P l o t

D e v i c e

A u t o C r s i o n

D a t e a n d

T i m e

P l o t t e d

P

M

D a t e

L a s t

S a v e d

P

M

V a d o C o l o r d w g

IBWC Border V20170817

S h e e t S e t

N a m e

191BWC19B0002

ADMIN APPROVAL

DESIGNED

TECHNICAL APPROVAL

CHECKED

DRAWN

Crystal Cadillo, PE

Elizabeth Verdecchia

Andrea Glover

Andrea Glover, PE

08-08-2019

CA

AZ

N V

N M

TX

O K

SO

N

O

RA

CH

IH

U

AH

U A

CO

AH

U

IL

A

BA

JA CA N

BA

JA

CA

S

LE

O

N

DU

RA

N

GO

N

U N

I T E D

S T A

T E

S

0 4010 20

High voltage power line easement

NOTES:

1. Planting area shown is estimated based upon July 2019 aerial photo.

Actual planting area will vary. Planting area encompasses all fill area between gabions and existing, full height floodplain bank.

2. Plant shrubs of the types indicated in groups of 3 to 5 plants. Space shrubs as noted in Technical Specification 32.93.33.

3. Gooding's willow (black willow) poles not shown. Plant Gooding's willow poles throughout area maintaining spacing noted in Technical Specification

32.93.43.

4. Cottonwood pole locations are generalized. Ensure that cottonwoods are spaced at least 100 feet apart.

5. Seed shrubs per Technical Specification Section 32.93.33 within the shaded area. Seed whole planting area per Technical Specification Section

32.92.19.

6. Gooding's willow poles, coyote willow poles, and cottonwood poles may be used in lieu of wood stakes to secure wattles.

7. Cover entire planting area from western most wattle to gabions with 6 inches of topsoil. See Typical Section D for reference.

8. Grade planting area to slope toward wattles. If planting area is too wide to allow constant slope toward western edge, Contractor may install up to a 1 foot deep low area in the center of the widest portion.

9. Drawing only valid if printed in color.

Use wattles to stair step bank elevation change between

9 ft and 6 ft gabions.

R

A

N

D

E

Shrub seeding area

Use wattles to stair step bank elevation change between

9 ft and 6 ft gabions.

D

D

C