20190752 Ver 3_Appendix C Chemours flow-through cells stream data sheets and photos_20200603

Appendix C
Waters of the United States Technical Report
The Chemours Company
Flow -through Cells
May 28, 2020
Stream Data Sheets and Photographs

IF
TWO
SEEP A
SEEP B
SEEP C,
SEEP D

NC DWQ Stream Identification Form Version 4.11
Date: 5/19/2020
Project/Site: SEEP A
Latitude: 34.84544
Evaluator: Luke Eggering, PWS
County: Bladen County
Longitude:-78.82589
Total Points:
Stream Determination (circle one)
Other
Stream is at least intermittent 36.5
Ephemeral Intermittent Perennial
e.g. Quad Name. N/A
if>_ 19 or perennial if>_ 30*
A. Geomorphology (Subtotal = 18.5)
Absent
Weak
Moderate
Strong
1' Continuity of channel bed and bank
0
1
2
3
2. Sinuosity of channel along thalweg
0
1
2
3
3. In -channel structure: ex. riffle -pool, step -pool,
ripple -pool sequence
0
1
2
3
4. Particle size of stream substrate
0
1
2
3
5. Active/relict floodplain
0
1
2
3
6. Depositional bars or benches
0
1
2
3
7. Recent alluvial deposits
0
1
2
3
8. Headcuts
0
1 1
2
3
9. Grade control
0
0.5
1
1.5
10. Natural valley
0
0.5
1
1.5
11. Second or greater order channel
No = 0
Yes = 3
artificial ditches are not rated; see discussions in manual
B. Hydrology (Subtotal = 12 )
12. Presence of Baseflow
0
1
2
3
13. Iron oxidizing bacteria
0
1
2
3
14. Leaf litter
1.5
1
0.5
0
15. Sediment on plants or debris
0
0.5
1
1.5
16. Organic debris lines or piles
0
1 0.5
1
1 1.5
17. Soil -based evidence of high water table?
No = 0
Yes = 3
C. Biology (Subtotal = 6 )
18. Fibrous roots in streambed
3
2
1
0
19. Rooted upland plants in streambed
3
2
1
0
20. Macrobenthos (note diversity and abundance)
0
1
2
3
21. Aquatic Mollusks
0
1
2
3
22. Fish
0
0.5
1
1.5
23. Crayfish
0
0.5
1
1.5
24. Amphibians
0
0.5
1
1.5
25. Algae
0
0.5
1
1.5
26. Wetland plants in streambed
FACW = 0.75; OBL =
1.5 Other = 0
*perennial streams may also be identified using other methods. See p. 35 of manual.
Notes:
The channel for the flow -through cell location is fairly stable with silt and sand.
Sketch:
E- Flow
Cape
Fear Sample
River Location
North

Seep A stream flow -through cell location, facing upstream (west).
Seep A stream flow -through cell location, facing downstream (east).
Chemours - Flow -through Cells

Seep A stream, transverse view, facing south. Notice existing instream flume.
Seep A stream flow -through cell location.
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Chemours — Flow -through Cells

NC DWQ Stream Identification Form Version 4.11
Date: 5/18/2020
Project/Site: SEEP B
Latitude: 34.84218
Evaluator: Luke Eggering, PWS
County: Bladen County
Longitude:-78.82612
Total Points:
Stream Determination (circle one)
Other
Stream is at least intermittent 41.0
Ephemeral Intermittent Perennial
e.g. Quad Name. N/A
if>_ 19 or perennial if>_ 30*
A. Geomorphology (Subtotal =__lL5_j
Absent
Weak
Moderate
Strong
1' Continuity of channel bed and bank
0
1
2
3
2. Sinuosity of channel along thalweg
0
1
2
3
3. In -channel structure: ex. riffle -pool, step -pool,
ripple -pool sequence
0
1
2
3
4. Particle size of stream substrate
0
1
2
3
5. Active/relict floodplain
0
1
2
3
6. Depositional bars or benches
0
1
2
3
7. Recent alluvial deposits
0
1
2
3
8. Headcuts
0
1 1
2
3
9. Grade control
0
0.5
1
1.5
10. Natural valley
0
0.5
1
1.5
11. Second or greater order channel
No = 0
Yes = 3
artificial ditches are not rated; see discussions in manual
B. Hydrology (Subtotal = 11.5 )
12. Presence of Baseflow
0
1
2
3
13. Iron oxidizing bacteria
0
1
2
3
14. Leaf litter
1.5
1
0.5
0
15. Sediment on plants or debris
0
0.5
1
1.5
16. Organic debris lines or piles
0
0.5
1
1.5
17. Soil -based evidence of high water table?
No = 0
Yes = 3
C. Biology (Subtotal = 10.0 )
18. Fibrous roots in streambed
3
2
1
0
19. Rooted upland plants in streambed
3
2
1
0
20. Macrobenthos (note diversity and abundance)
0
1
2
3
21. Aquatic Mollusks
0
1
2
3
22. Fish
0
0.5
1
1.5
23. Crayfish
0
0.5
1
1.5
24. Amphibians
0
0.5
1
1.5
25. Algae
0
0.5
1
1.5
26. Wetland plants in streambed
FACW = 0.75; OBL =
1.5 Other = 0
*perennial streams may also be identified using other methods. See p. 35 of manual.
Notes:
The margins of the stream channel are fringe
wetlands with obligate plants. Groundwater creates a perennial flow.
Sketch:
Flow tom- ,♦
Cape Fear Rive
Flow -through cell location
North

Seep B stream flow -through cell location, facing upstream (west).
Seep B stream flow -through cell location, facing downstream (east).
Chemours - Flow -through Cells

Seep B stream flow -through cell location, transverse view, facing (north).
Seep B stream flow -through cell location.
Chemours - Flow -through Cells

NC DWQ Stream Identification Form Version 4.11
Date: 5/18/2020
Project/Site: SEEP B-TempCross
Latitude: 34.84256
Evaluator: Luke Eggering, PWS
County: Bladen County
Longitude:-78.82546
Total Points:
Stream Determination (circle one)
Other
Stream is at least intermittent 11.75
Ephemeral Intermittent Perennial
e.g. Quad Name. N/A
if>_ 19 or perennial if>_ 30*
A. Geomorphology (Subtotal = 5
Absent
Weak
Moderate
Strong
1' Continuity of channel bed and bank
0
1
2
3
2. Sinuosity of channel along thalweg
0
1
2
3
3. In -channel structure: ex. riffle -pool, step -pool,
ripple -pool sequence
0
1
2
3
4. Particle size of stream substrate
0
1
2
3
5. Active/relict floodplain
0
1
2
3
6. Depositional bars or benches
0
1
2
3
7. Recent alluvial deposits
0
1
2
3
8. Headcuts
0
1 1
2
3
9. Grade control
0
0.5
1
1.5
10. Natural valley
0
0.5
1
1.5
11. Second or greater order channel
No = 0
Yes = 3
artificial ditches are not rated; see discussions in manual
B. Hydrology (Subtotal = 2 )
12. Presence of Baseflow
0
1
2
3
13. Iron oxidizing bacteria
0
1
2
3
14. Leaf litter
1.5
1
0.5
0
15. Sediment on plants or debris
0
0.5
1
1.5
16. Organic debris lines or piles
0
0.5
1
1.5
17. Soil -based evidence of high water table?
No = 0
Yes = 3
C. Biology (Subtotal = 4.75 )
18. Fibrous roots in streambed
3
2
1
0
19. Rooted upland plants in streambed
3
2
1
0
20. Macrobenthos (note diversity and abundance)
0
1
2
3
21. Aquatic Mollusks
0
1
2
3
22. Fish
0
0.5
1
1.5
23. Crayfish
0
0.5
1
1.5
24. Amphibians
0
0.5
1
1.5
25. Algae
0
0.5
1
1.5
26. Wetland plants in streambed
FACW = 0.75; OBL = 1.5 Other = 0
*perennial streams may also be identified using other methods. See p. 35 of manual.
Notes:
30' downstream from the temporary crossing,there
is a headcut. There is perennial groundwater flow below headcut.
sketch:
•
�- North
Headcut & perennial flow below headcut.
Culvert location
<- Flow

Seep B temporary crossing ephemeral channel location, facing upstream (southwest).
Seep B temporary crossing ephemeral channel location, facing downstream (northeast). The
deep hole in the background is a headcut where a perennial flow of groundwater begins.
Chemours - Flow -through Cells

Seep B temporary crossing ephemeral channel transverse view, facing southeast.
Seep B temporary crossing ephemeral channel transverse view, facing northwest.
Chemours - Flow -through Cells

Seep B temporary crossing ephemeral channel location.
Chemours - Flow -through Cells

NC DWQ Stream Identification Form Version 4.11
Date: 5/19/2020
Project/Site: SEEP C
Latitude: 34.83858
Evaluator: Luke Eggering, PWS
County: Bladen County
Longitude:-78.82462
Total Points:
Stream Determination (circle one)
Other
Stream is at least intermittent 43.5
Ephemeral Intermittent Perennial
e.g. Quad Name. N/A
if>_ 19 or perennial if>_ 30*
A. Geomorphology (Subtotal = 20.5
Absent
Weak
Moderate
Strong
1' Continuity of channel bed and bank
0
1
2
3
2. Sinuosity of channel along thalweg
0
1
2
3
3. In -channel structure: ex. riffle -pool, step -pool,
ripple -pool sequence
0
1
2
3
4. Particle size of stream substrate
0
1
2
3
5. Active/relict floodplain
0
1
2
3
6. Depositional bars or benches
0
1
2
3
7. Recent alluvial deposits
0
1
2
3
8. Headcuts
0
1 1
2
3
9. Grade control
0
0.5
1
1.5
10. Natural valley
0
0.5
1
1.5
11. Second or greater order channel
No = 0
Yes = 3
artificial ditches are not rated; see discussions in manual
B. Hydrology (Subtotal = 12.0 )
12. Presence of Baseflow
0
1
2
3
13. Iron oxidizing bacteria
0
1
2
3
14. Leaf litter
1.5
1
0.5
0
15. Sediment on plants or debris
0
0.5
1
1.5
16. Organic debris lines or piles
0
0.5
1
1.5
17. Soil -based evidence of high water table?
No = 0
Yes = 3
C. Biology (Subtotal = 11.0 )
18. Fibrous roots in streambed
3
2
1
0
19. Rooted upland plants in streambed
3
2
1
0
20. Macrobenthos (note diversity and abundance)
0
1
2
3
21. Aquatic Mollusks
0
1
2
3
22. Fish
0
0.5
1
1.5
23. Crayfish
0
0.5
1
1.5
24. Amphibians
0
0.5
1
1.5
25. Algae
0
0.5
1
1.5
26. Wetland plants in streambed
FACW = 0.75; OBL = 1.5
Other = 0
*perennial streams may also be identified using other methods. See p. 35 of manual.
Notes:
Sketch:
North F
Flow �j
Sample Point & Flow Through Cell Location
Wetland
Fringe

Seep C stream flow -through cell location, facing upstream (north).
Seep C stream flow -through cell location, facing downstream (south).
Chemours - Flow -through Cells

Seep C stream flow -through cell transverse view, facing east.
�
Ay
Seep C stream location.
0
E
;.
Fayetteville North Carolina
28306
long -78-82452682lat,34.83851129 •'�
i
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I11 O <
Chemours - Flow -through Cells

NC DWQ Stream Identification Form Version 4.11
Date: 5/19/2020
Project/Site: SEEP D
Latitude: 34.837004
Evaluator: Luke Eggering, PWS
County: Bladen County
Longitude:-78.823829
Total Points:
Stream Determination (circle one)
Other
Stream is at least intermittent 39.5
Ephemeral Intermittent Perennial
e.g. Quad Name. N/A
if>_ 19 or perennial if>_ 30*
A. Geomorphology (Subtotal = 2j .5_J
Absent
Weak
Moderate
Strong
1' Continuity of channel bed and bank
0
1
2
3
2. Sinuosity of channel along thalweg
0
1
2
3
3. In -channel structure: ex. riffle -pool, step -pool,
ripple -pool sequence
0
1
2
3
4. Particle size of stream substrate
0
1
2
3
5. Active/relict floodplain
0
1
2
3
6. Depositional bars or benches
0
1
2
3
7. Recent alluvial deposits
0
1
2
3
8. Headcuts
0
1 1
2
3
9. Grade control
0
0.5
1
1.5
10. Natural valley
0
0.5
1
1.5
11. Second or greater order channel
No = 0
Yes = 3
artificial ditches are not rated; see discussions in manual
B. Hydrology (Subtotal = 12.0 )
12. Presence of Baseflow
0
1
2
3
13. Iron oxidizing bacteria
0
1
2
3
14. Leaf litter
1.5
1
0.5
0
15. Sediment on plants or debris
0
0.5
1
1.5
16. Organic debris lines or piles
0
1 0.5
1
1 1.5
17. Soil -based evidence of high water table?
No = 0
Yes = 3
C. Biology (Subtotal = 6.0 )
18. Fibrous roots in streambed
3
2
1
0
19. Rooted upland plants in streambed
3
2
1
0
20. Macrobenthos (note diversity and abundance)
0
1
2
3
21. Aquatic Mollusks
0
1
2
3
22. Fish
0
0.5
1
1.5
23. Crayfish
0
0.5
1
1.5
24. Amphibians
0
0.5
1
1.5
25. Algae
0
0.5
1
1.5
26. Wetland plants in streambed
FACW = 0.75; OBL
= 1.5 Other = 0
*perennial streams may also be identified using other methods. See p. 35 of manual.
Notes:
Revised flow through cell location avoids wetland impacts.
Sketch: Wetland & Old Sample Point
Flow
W Sample Point
Cape Fear River
North

Seep D stream flow -through cell location, facing upstream (west).
Seep D stream flow -through cell location at existing flume, facing downstream (east).
Chemours - Flow -through Cells

Seep D stream flow -through cell location, transverse view, facing (north).
Seep D stream location.
12:00 4 W1 0 cffi 10 A o
Fayetteville North Carolina
28306
logic_ 18. 82a82943 I a C 34. 83/004S2
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O • �W
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Chemours - Flow -through Cells