20200142 Ver 1_B-4484_HYD_WISS_(Sep 2016)_20200320

WETLAND AND SURACE WATER IMPACTS SUMMARY
WETLAND IMPACTS SURFACE WATER IMPACTS
Site
No.
Station
(From/To)
Structure
Size / Type
Permanent
Fill In
Wetlands
(ac)
Temp.
Fill In
Wetlands
(ac)
Excavation
in
Wetlands
(ac)
Mechanized
Clearing
in Wetlands
(ac)
Hand
Clearing
in
Wetlands
(ac)
Permanent
SW
impacts
(ac)
Temp.
SW
impacts
(ac)
Existing
Channel
Impacts
Permanent
(ft)
Existing
Channel
Impacts
Temp.
(ft)
Natural
Stream
Design
(ft)
1
-1-1- 17+85 RT
Exist. 12" CMP Removal
0.002
1
-1-1- 19+41 LT
Rip Rap Outlets
0.002
0.005
1
-1-1- 20+50 RT
Rip Rap Outlet
0.001
0.003
1
-1-1- 20+62 to 22+28 LT
Ret Wall / Fill / Work Platform
0.072
0.185
1
-1-1- 27+85 to 32+70 LT
Ret Wall / Fill / Work Platform
0.363
0.099
1
-1-1- 29+73 RT
Rip Rap Outlet
0.002
2
-1-1- 39+17 LT
Roadway Fill Slope
0.029
2
-1-1- 39+62 RT
Roadway Cut Slope
0.004
2
-1-1- 39+71 to 40+45 RT
Roadway Cut Slope
0.035
2
-L1- 39+00 to 43+32
Proposed Bridge / Work Platform
0.825
2
-1-1- 42+26 to 43+32 RT
Roadway Cut Slope
0.067
2
-1-1- 43+32 to 51+32 LT
Proposed Roadway/Fill Slope
0.613
0.082
2
-L1- 48+60 to 50+66 LT
Channel Relocation
0.005
0.266
0.090
2
-1-1- 48+90 RT
Temporary Dike for Slipline
0.028
2
-1-1- 53+00 LT
Roadway Fill Slope
0.006
2
-1-1- 52+97 RT
Roadway Fill Slope
0.001
TOTALS*:
*Rounded totals are sum of actual impacts
NOTES:
Total permanent Wetland Impacts due to proposed piles = 38 sq.ft.
Total permanent SW Impacts due to proposed piles = 141 sq.ft.
Temp Work Platform
Based on 20' or shorter spans, with pile rows 2' long and the full width of the platform (both conservative):
Temporary Fill in Wetlands = 4,567 sq.ft and Temporary Surface Water Impacts = 2,905 sq.ft
Revised 2016 09 09