20171250 Ver 1_SW Plan_20171003

(Version 2.07; Released October 2016)
46398.1.1 TIP No.:P-5704 County(ies):Union Page 1 of 2
TIP Number:Date:
Phone:Phone:
Email:Email:
County(ies):
CAMA County?
Yes
Design/Future:Year:NA Existing:Year:
Aquatic T&E Species?No Comments:
No N/A
N/A
N/A
Deck Drains Discharge Over Water Body?(If yes, provide justification in the General Project Narrative)(If yes, describe in the General Project Narrative; if no, justify in the
General Project Narrative)(If yes, provide justification in the General Project Narrative)
ac.
Single track with siding track on 15' center with 15' roadbed. 2:1 fill slopes with
minimum typical 2' depth 2' base ditch.
NA
[e-mail]
Project Includes Bridge Spanning Water Body?Deck Drains Discharge Over Buffer?Dissipator Pads Provided in Buffer?
NRTR Stream ID:
Annual Avg Daily Traffic (veh/hr/day):
Existing Site
Project Length (lin. miles or feet):
ac.
Surface Water Body (1):
Class CNCDWR Surface Water Classification for Water Body
N/ABuffer Rules in Effect:
biological impairment
NA
Single track with siding track on a portionof the proposed project length. 2:1 or flatter fill
slopes.
Waterbody Information
NA
NCDWR Stream Index No.:
46398.1.1
Impairments:
Other Stream Classification:
Primary Classification:
Project Built-Upon Area (ac.)
The CSX proposed Stout’s Siding Extension along the CSX SF Line in Union County between MP 311.8 and MP 316.9 will extend existing Stouts Siding track to the west to
provide 10,000 feet of clear distance between Indian Trail Road and Wesley Chapel Stouts Road.
Existing drainage pattern flowing directly to a wetland near the south end of the project, Sta. 345+75 RT, is being maintained. Flow to the wetland is being carried by a grass
lined 2' base ditch. The Q10 velocity into the wetland is calculated to be 0.8 ft/sec.
The project impacts three jurisdictional stream crossings, one at South Fork Crooked Creek, one at an unnamed tributary to South Fork Crooked Creek, and a third at another
unnamed tributary. At South Fork Crooked Creek, Sta. 429+80, there is an existing rock arch culvert with a 60" CMP outlet extension. The proposed design calls to extend the
existing rock arched culvert by replacing the existing 60" CMP outlet end with a 52" smooth steel liner pipe. The outlet of the extension will be placed so that the outlet elevation
matches that of the existing stream channel. An additional 34" smooth steel pile will be installed adjacent via trenchless installation to assist with higher flows. The northeast
quadrant contains a proposed 2' lateral base ditch to maintain the existing condition flow pattern to the stream channel. The channel is lined with rip rap for stabilization and
velocity control. The Q100 ditch velocity is 3.5 ft/sec. The crossing of the unnamed tributary to South Fork Crooked Creek, Sta. 432+75, contains four existing 60"x66" elliptical
concrete pipes. The proposed design calls to extend these pipes to maintain flow. The northwest quadrant contains a proposed 6' lateral base ditch lined with rip rap for
stabilization and velocity control. The Q100 ditch velocity is 4.5 ft/sec. At the third crossing, Sta. 469+90, there is an existing 2.5' x 4' rock box culvert that will be extended with a
2.5' x 4' reinforced concrete box culvert to maintain flow. The culvert is to be buried approximately 1.5' and backfilled with native stream material. The northwest quadrant
includes a 2' base, grass lined ditch with a Q100 velocity of 4.2 ft/sec.
Rip rap is utilized on the stream banks and within some proposed drainage ditches to prevent scour and erosion at the pipe outlets.
Velocities for all ditches are designed to be non-erosive for the Q100 storm and are lined for protection as needed.
701 Corporate Center Drive
North Carolina Department of Transportation
Highway Stormwater Program
STORMWATER MANAGEMENT PLAN
FOR NCDOT PROJECTS
Project Type:
862 Capital Boulevard Address:
General Project Information
P-5704
WBS Element:
OtherWBS Element:
AECOMNCDOT Contact:
919-707-4118
Suite 400
Raleigh, NC 27607
Contractor / Designer:
919-854-6200
[e-mail]
Address:
UnionIndian Trail
Brad Smythe, PE
Raleigh, NC 27603
River Basin(s):
City/Town:
13.4
Typical Cross Section Description:
Surrounding Land Use:
General Project Narrative:
(Description of Minimization of Water
Quality Impacts)
No
Woods, Industrial, Residential
South Fork Crooked Creek 13-17-20-2
9.4
2.8 lin. miles
Project Description
Proposed Project
Yadkin-Pee Dee
Supplemental Classification: None
Wetlands within Project Limits?
(Version 2.07; Released October 2016)
North Carolina Department of Transportation
Highway Stormwater Program
STORMWATER MANAGEMENT PLAN
FOR NCDOT PROJECTS
WBS Element:46398.1.1 TIP No.:P-5704 County(ies):Union Page 2 of 2
Aquatic T&E Species?No Comments:
No N/A
N/A
Aquatic T&E Species?No Comments:
No N/A
N/A
Aquatic T&E Species?Comments:
Aquatic T&E Species?Comments:
(If yes, provide justification in the General Project Narrative)(If yes, describe in the General Project Narrative; if no, justify in the
General Project Narrative)
Deck Drains Discharge Over Water Body?
(If yes, provide justification in the General Project Narrative)
NRTR Stream ID:
Surface Water Body (4):
Impairments:
Buffer Rules in Effect:N/A
WBS Element:
Surface Water Body (2):
Buffer Rules in Effect:N/A
Additional Waterbody Information
South Fork Crooked Creek Tributary 3 NCDWR Stream Index No.:
UT to South Fork Crooked Creek NCDWR Stream Index No.:NA
NA
None
NRTR Stream ID:
Class CPrimary Classification: NCDWR Surface Water Classification for Water Body Supplemental Classification:
Other Stream Classification:
Impairments:
None
None
Project Includes Bridge Spanning Water Body?Deck Drains Discharge Over Buffer?Dissipator Pads Provided in Buffer?N/A
Supplemental Classification:
Supplemental Classification:
Other Stream Classification:
NRTR Stream ID:
Impairments:
Buffer Rules in Effect:
Other Stream Classification:
Buffer Rules in Effect:
NCDWR Surface Water Classification for Water Body Primary Classification:
(If yes, describe in the General Project Narrative; if no, justify in the
General Project Narrative)
Surface Water Body (5): NCDWR Stream Index No.:
(If yes, provide justification in the General Project Narrative)
NCDWR Stream Index No.:
Primary Classification:
Other Stream Classification: None
Supplemental Classification:
Class C
None
Primary Classification:
NRTR Stream ID:
Impairments:None
Surface Water Body (3):
Project Includes Bridge Spanning Water Body?Deck Drains Discharge Over Buffer?Dissipator Pads Provided in Buffer?N/A
NCDWR Surface Water Classification for Water Body
(If yes, provide justification in the General Project Narrative)(If yes, describe in the General Project Narrative; if no, justify in the
General Project Narrative)(If yes, provide justification in the General Project Narrative)
Deck Drains Discharge Over Water Body?
NCDWR Surface Water Classification for Water Body
(If yes, provide justification in the General Project Narrative)
Project Includes Bridge Spanning Water Body?Deck Drains Discharge Over Buffer?Dissipator Pads Provided in Buffer?
Deck Drains Discharge Over Water Body?
(If yes, provide justification in the General Project Narrative)
(If yes, provide justification in the General Project Narrative)
(If yes, describe in the General Project Narrative; if no, justify in the
General Project Narrative)
Project Includes Bridge Spanning Water Body?Deck Drains Discharge Over Buffer?Dissipator Pads Provided in Buffer?
Deck Drains Discharge Over Water Body?