2022-04-04_PERMIT FILE - M2022013 ‎(45)‎

• Permit No: M2022013
• IBM Index Class Name: Permit File
• Doc Date: 4/4/2022
• Doc Name Note: Exhibit G - Floodplain Development Permit
• Doc Name: Application
• From: Varra Companies, Inc.
• To: DRMS
• Email Name: RDZ
• Email Name: MAC
• Media Type: D
• Archive: No

Floodplain Development Permit Package,July 2019
4,705
4,700 —
4,695
ao
O
a
z -
4,690
o Project Area
a
w
4,685
•
4,680
4,675
0 2,000 4,000 61000 8,000 10,000 12,000 14,000 16,000 18,000 24000
BT1-A River Station [distance from S. Platte Confluence ft]
! 1-D CHAMP BFE ! 1-D CHAMP with Project Existing 2-D Proposed 2-D
Figure 4: Water surface profiles comparing existing and with-project conditions from both the 1-D
CHAMP TON Y1 model and the 2-D WES-BTC model results.
Table 1:Table comparing CHAMP 1-D and WES-BTC 2-D model results for BFE in vicinity of the proposed
project. RS 5792 and 5226 are in the spoil area and RS 3041 and 1708 are in the excavation area.
1-D CHAMP 2-D WES-BTC
BT1-A XS WSE- WSE - Delta WSE- WSE- Delta
RS Exist Project Exist Project
5792 4684.3 4684.8 0.50 4684.5 4684.8 0.32
5226 4683.9 4684.2 0.31 4683.6 4683.9 0.22
3041 14681.31 4681.2 -0.10 4682.01 4681.3 -0.74
1708 14680.91 4681.0 0.06 4681.11 4680.8 -0.38
Headwaters Corporation 6 of 7