5 TH ANNUAL CAPE COASTAL CONFERENCE

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1 5 TH ANNUAL CAPE COASTAL CONFERENCE Key Considerations for Living Shoreline Projects Seth Wilkinson, Restoration Ecologist, President Wilkinson Ecological Design, Inc.

2 BIOENGINEERING STRATEGIES Reducing Coastal Erosion and Coastal Storm Damage While Minimizing Impacts

3 BIOENGINEERING STRATEGIES Reducing Coastal Erosion and Coastal Storm Damage While Minimizing Impacts Based on SITE SPECIFIC Criteria

4 Understanding if a beach has a base elevation. Based on SITE SPECIFIC Criteria

5 Based on SITE SPECIFIC Criteria Understanding if a beach has a base elevation. Understanding the function a fringe marsh plays.

6 Based on SITE SPECIFIC Criteria Understanding if a beach has a base elevation. Understanding the function a fringe marsh plays. Understanding near shore characteristics such as fetch, water depths, sand bars, and location within a given littoral cell.

7 BIOENGINEERING STRATEGIES Materials

8 BIOENGINEERING STRATEGIES Materials Coir Fiber Rolls Adds stability and protection to the toe of a bank and provides a window of opportunity to establish vegetation.

9 BIOENGINEERING STRATEGIES Materials Coir Fiber Rolls Adds stability and protection to the toe of a bank and provides a window of opportunity to establish vegetation. Robust Anchoring System

10 BIOENGINEERING STRATEGIES Materials Coir Fiber Rolls Adds stability and protection to the toe of a bank and provides a window of opportunity to establish vegetation. Robust Anchoring System Erosion Control Blanketing blanketing of natural fibers are used to stabilize soils allowing time for native salt tolerate plants become established.

11 BIOENGINEERING STRATEGIES Materials Resists degradation from the marine environment. Absorbs some of the force of wave energy unlike many hard solutions that deflect the energy of wave action to surrounding areas. Coir Fiber Rolls Adds stability and protection to the toe of a bank and provides a window of opportunity to establish vegetation. Robust Anchoring System Erosion Control Blanketing blanketing of natural fibers are used to stabilize soils allowing time for native salt tolerate plants become established. Materials life-expectancy to stabilize sediments matches the time required to establish native plants.

12 BIOENGINEERING STRATEGIES Materials Native Shrubs Native Grasses

13 BIOENGINEERING STRATEGIES Materials Pre-vegetated Fiber Rolls Native Shrubs Native Grasses

14 BIOENGINEERING STRATEGIES Materials Salt Marsh Pre-vegetated Fiber Rolls Native Shrubs Native Grasses

15 BIOENGINEERING STRATEGIES Materials Root Depths of Native Plant Species Littleblue Stem sideoats grama Switchgrass Indiangrass Big Bluestem bayberry 10

16 BIOENGINEERING STRATEGIES installation & case studies

17 installation & Case studies Typical Eroding Bank 1

18 installation & Case studies I mportance of Establishing a Stable Slope If the slope of the bottom of the bank is steeper that the upper bank, it is likely unstable and prone to slumping or collapses. (Storm Smart Properties Fact Sheet 4) 1

19 installation & Case studies I mportance of Establishing a Stable Slope Utilizing a portion of the upper bank can create a more stable slope angle. Adds increased stability and storm damage prevention to the bank. Without this step, an investment in bioengeneering can be lost due to bank collapses. (Storm Smart Properties Fact Sheet 4) 1 2

20 installation & Case studies S tabilizing toe of bank - Fiber rolls Installation begins at the base of the array and proceeds up bank. Proper anchoring strategy to hold toe protection in place. Synthetic filter fabrics DO NOT ENHANCE success of a bioengineering project

21 installation & Case studies S tabilizing toe of bank - Pre-vegetated fiber rolls Use of pre-vegetated fiber rolls along top of array. Added vegetation to the root matrix. Full season of plant growth prior to installation

22 installation & Case studies S tabilizing soils above toe protection Native salt tolerant grasses are seeded into the bank prior to installation of erosion control blankets. Protect soils from erosion and helps to retain moisture to promote seed germination Littleblue Stem Switchgrass sideoats grama

23 installation & Case studies S tabilizing soils above toe protection 6 deep lock-in trench at top and bottom of slope. Overlap blankets a minimum of 6. Use appropriate staking to match the sediment. Only run orientation of blankets perpendicular to the contours (up and down slope)

24 installation & Case studies n ative shrub species Native beach plum and bayberry planted through erosion control blanketing. Temporary above ground irrigation for plant establishment

25 installation & Case studies Establishment of native vegetation after two seasons of growth

26 installation & Case studies C ondition of fiber roll array following Hurricane Sandy 11/ Waves reached above fiber roll array with no damage.

27 installation & Case studies C ondition of fiber roll array following named stormed Nemo 2/

28 installation & Case studies C ondition of fiber roll array following named stormed Nemo 2/ Waves reached above fiber roll array with no damage.

29 installation & Case studies Fiber roll array increased in length by 90 6/ Phase 1 Phase 2

30 installation & Case studies

31 SAND NOURISHMENT FIBER ROLL ARRAY 2 CS350 SOIL LIFTS CONSISTING OF 20 OZ BIODEGRADABLE JUTE-BURLAP FABRIC LAYER WITH 2 OUTER LAYERS OF COIR (1000GRAM) 2" UNTREATED HARDWOOD STAKES TO SECURE COIR FABRIC 2016 WILKINSON ECOLOGICAL DESIGN, INC. SOIL LIFT SECTION, TYPICAL 1 DETAIL PROVIDED BY WILKINSON ECOLOGICAL DESIGN, SPECIALISTS IN COASTAL STABILIZATION CONSTRUCTION Scale: 1/4" = 1' 20 OZ BIODEGRADABLE JUTE-BURLAP FABRIC LAYER 2 LAYERS OF COIR (1000GRAM) COMPATIBLE SAND FILL HARDWOOD 3' O.C. TO HOLD COIR IN PLACE SOIL LIFT DETAIL, TYPICAL 2 DETAIL PROVIDED BY WILKINSON ECOLOGICAL DESIGN, SPECIALISTS IN COASTAL STABILIZATION CONSTRUCTION Scale: 2" = 1' 09/12/2016 JS 1/4" = 1'-0" SW COASTAL STABILIZATION CS350 1-Sep-16 k:\design\04 programs\autocad\details\wed details\ _coastal stab details.dwg

32 DB88 DUCKBILL ANCHORS ATTACHED TO 1/4" CABLES. ANCHORS SPACED 2.5' +/- OC NATIVE MARITIME GRASSES (BY OTHERS) COIR ENVELOPE 4' WIDE X 3' HEIGHT 2 CS WILKINSON ECOLOGICAL DESIGN, INC. SAND NOURISHMENT AS NECESSARY SAND DRIFT FENCE COMPANY NAME ADDRESS CITY, STATE, ZIP CODE PHONE NUMBER EXISTING GRADE 1 COIR ENVELOPE SECTION TYP. DETAIL PROVIDED BY WILKINSON ECOLOGICAL DESIGN, SPECIALISTS IN COASTAL STABILIZATION CONSTRUCTION Scale: 1/4" = 1' SEAMS TO BE HAND STITCHED WITH 1 FT OVERLAP BETWEEN LAYERS 1/4" CABLE 2 LAYERS OF COIR (1000GRAM) 20OZ JUTE-BURLAP WITH NATURAL POLYMER COMPATIBLE SAND FILL 09/12/2016 1/4" = 1' 2 COIR ENVELOPE DETAIL DETAIL PROVIDED BY WILKINSON ECOLOGICAL DESIGN, SPECIALISTS IN COASTAL STABILIZATION CONSTRUCTION Scale: 3/4" = 1' JS COASTAL STABILIZATION SW CS340 1-Sep-16 k:\design\04 programs\autocad\details\wed details\ _coastal stab details.dwg

33 PROPOSED GRADE EXISTING GRADE 20" DIAMETER FIBER ROLLS INSTALLED AT 1.5:1 SLOPE APPROX. TOP FIBER ROLLS TO BE LOW-DENSITY (#7) AND PLUGGED WITH AMERICAN BEACHGRASS & QUACK 12" OC COMPATIBLE SEDIMENT TO PROVIDE AVERAGE COVER OF 4-6" OF COVER OVER PRE-VEGETATED FIBER ROLLS 2016 WILKINSON ECOLOGICAL DESIGN, INC. BOTTOM FIBER ROLLS TO BE HIGH-DENSITY (#9) AND COVERED WITH LAYER OF EROSION CONTROL MESH AND C-700 COIR NETTING 1.5:1 TYP REMAINS OF SAND NOURISHMENT PLACED OVER HIGH-DENSITY FIBER ROLLS AT GREATER DEPTH TO PROVIDE SPECIFIED VOLUME OF SAND NOURISHMENT 1 CS314 BOTTOM FIBER ROLLS TO BE COVERED WITH LAYER OF EROSION CONTROL MESH AND C-700 COIR NETTING 6"X6" ANCHOR POSTS SPACED 5' O.C. DB88 DUCKBILL ANCHORS ATTACHED TO 42" CABLES. ANCHORS SPACED 2.5' +/- OC ACROSS FACE OF FIBER ROLLS 2" UNTREATED HARDWOOD STAKES TO SECURE COIR FABRIC SOIL LIFTS CONSISTING OF A SINGLE LAYER OF C-700 COIR NETTING AND MESH COMPARABLE TO THE CASING OF FIBER ROLLS 1 FIBER ROLL REINFORCED LIFT SECTION,TYPICAL DETAIL PROVIDED BY WILKINSON ECOLOGICAL DESIGN, SPECIALISTS IN COASTAL STABILIZATION CONSTRUCTION PATENT PENDING Scale: 1/4" = 1' 09/12/2016 1/4" = 1'-0" JS SW COASTAL STABILIZATION CS312 1-Sep-16 k:\design\04 programs\autocad\details\wed details\ _coastal stab details.dwg

34 Importance of Fringe Marshes in Coastal Stabilization

35 Importance of Fringe Marshes in Coastal Stabilization Woven coir mats used as a growing medium. Pre-vegeated to establish prior before installation.

36 Importance of Fringe Marshes in Coastal Stabilization Fiber Roll Array Beach Elevation High Tide

37 Importance of Fringe Marshes in Coastal Stabilization Fiber Roll Array High Tide

38 Importance of Fringe Marshes in Coastal Stabilization Fiber Roll Array Beach Elevation High Tide

39 1 installation & Case studies Fringe Marshes

40 installation & Case studies Fringe Marshes 1 2

41 installation & Case studies Fringe Marshes 1 2 3

42 installation & Case studies Fringe Marshes

43 installation & Case studies Fringe Marshes 1 2

44 installation & Case studies Fringe Marshes

45 installation & Case studies Fringe Marshes

46 BIOENGINEERING STRATEGIES Reducing Coastal Erosion and Coastal Storm Damage While Minimizing Impacts

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