1. Kastanis- Existing Conditions
Sediment Loading Estimate
Volume (cu. yds. /yr.)
522
932
Streambank Erosion- Rates
Streambank Erosion- Extent
Cross Section
Erosion Rate ( ) (ft. /yr.) 1
0.9 2
1.3 3
1.0 4
0.0 5 6
1.5 7
4.0 8
4.5 9
6.4 10
0.7 11 12 13 14 15
0.1
∆L (ft.)
Total Increased Erosion (ft.)
1,604
Total Recovered Erosion (ft.)
115
-The magnitude (rate) and extent of streambank erosion indicated long term, excessive instability.

2. Kastanis- Project Goals
Reduce impacts from fine sediment loading.
Reduce bank migration and provide lateral stability.
Provide healthy riparian buffer.
Reduce impact on aquatic and terrestrial habitat.
Improve aesthetic values of a natural stream channel.
Before
During

3. Kastanis- Design Objectives
Level
Category
Parameter
Measurement Method
Existing Condition Value
Existing Condition Rating
Proposed Condition Value
Proposed Condition Rating 1
Hydrology
Reach Runoff
Curve Number 28
Functioning-at-Risk
30 to 55
Functioning
Concentrated Flow Points 2
Hydraulics
Floodplain Connectivity
Bank Height Ratio
1.53
Not Functioning
1.0 to 1.2
Entrenchment Ratio
2.05
>=2.2
Flow Dynamics
Stream Velocity
8.7
3 to 6 3
Geomorphology
Sediment Competency
Required Depth and Slope
3.8
3.5
Sediment Transport Capacity
Bags
1,928
2,918
Channel Evolution
Rosgen Stream Type Succession C4
Bank Migration and Lateral Stability
Meander Width Ratio
>3.5
Cross-Sectional Surveys
1.3 ft. / year
<0.2 ft. / year
BEHI
Extreme
Low
Percent Streambank Erosion
42%
<10%
Riparian Vegetation
Buffer Width
>15, 0
Meander belt width at least 3.5
NRCS Rapid Visual Assessment Protocol
8 to 10
Bed Form Diversity
Percent Riffle
43%
52 to 74
Pool Max Depth Ratio
1.47
>1.5
Pool Spacing Ratio
10.50
3.7 to 7.3
Bed Material Characterization
Size Class Pebble Count Analyzer (p-value)
>0.1
Sinuosity
Plan Form
1.10,2.31,1.17
1.33

4. Kastanis- Contracting
Item of Work
Quantity
Unit
Lafever Excavating Inc.
General Construction 1
lump sum
400,000
Dust, Soil Erosion and Sedimentation Control
49,537
Primary Dewatering-30 Inch Bypass Pipe (1,000 feet)
80,000
Maintenance and Protection of Traffic
1,000
Rock Toe- Dry Riprap- Class II
3,600
ton
126,000
Brush Mattress
2,600
square yard
50,050
Live Fascine
2,900
linear feet
20,590
Live Stakes
6,050
stake
35,695
Containerized Plant
5,000
each
29,500
Full Soil Restoration 93
1,000 square feet
9,300
Sod Mat
5,100
38,760
Channel Protection- Dry Riprap- Class III
2,800
98,000
Allowance 1- Salvage Stone, Clay Material and Site Work
50,000
Allowance 2- Primary and Turbidity Pumping- Fuel and Operation
Total Base Bid
1,038,432

5. Kastanis
Before
After

6. Kastanis
Before
After