20150719 Ver 1_Email_20150828

Carpenter,Kristi
From: Chapman, Amy
Sent: Friday, August 28, 2015 8:29 AM
To: Carpenter,Kristi
Subject: FW: TIP B5243 bridge replacement over south fork crooked creek (UNCLASSIFIED)
Attachments: PCE B-5243 Final Doc 3-05-14 .pdf; RE: Permit Application for B-5243, Union County;
B-5243 Biological Conclusion Memorandum.pdf
Follow Up Flag: Follow up
Flag Status: Flagged
For laserfiche please.
-----Original Message-----
From: Dagnino, Carla S
Sent: Thursday, August 27, 2015 11:58 AM
To: Crystal Amschler ([e-mail]) ([e-mail])
Cc: Haywood, Luther G; Thompson, Larry B; Cheely, Erin K; Chambers, Marla J; Chapman, Amy
Subject: RE: TIP 65243 bridge replacement over south fork crooked creek (UNCLASSIFIED)
Hi Crystal,
The PCE (attached) contains the following information regarding structure type:
"Based on the drainage area and design discharges, a 2@ 12 foot wide by 7 foot high reinforced concrete box culvert
was determined to be adequate from a hydraulics standpoint. The culvert will be buried below the streambed. In
accordance with the Culvert Avoidance and Minimization Design Guidance, the culvert will be designed such that the
slope, low flow velocities and low flow channel designs are consistent with the existing stream." "Because of the
required structures size, stream classification, construction and maintenance costs as well as life expectancy, a culvert is
the preferred structure type. "
The stormwater management plan indicates that the replacement RCBC will be embedded 1 foot below the streambed
with a low flow channel and the low flow barrel will have a 1' sill and the other barrel has a 4' sill.
To address Marla Chambers' recent email (attached) with comments regarding the 303(d) and in-water species, I offer
the following:
We have an agreement with the NCDWR that a requirement for Design Standards in Sensitive Watersheds will be
appropriate for projects where the cause of impairment is due to sediment or turbidity. South Fork Crooked Creek
within the study area is listed as 303(d) due to fish/benthos. In addition, Crooked Creek (>7.5 straight miles away from
the crossing of B-5243) was listed for turbidity and benthos on the Final 2012 303(d) list. On the Final 2014 303(d) list,
Crooked Creek is now listed only for benthos.
Please see the attached Biological Survey Report for the Carolina heelsplitter. The report indicates that this project will
have No Effect on the species. On the 2nd page of the report in the last paragraph, it mentions that South Fork Crooked
Creek is on the newest 303(d) list for turbidity. We have made a check of the 303(d) list from 2010 through 2014 and
South Fork Crooked Creek was not listed for turbidity, although Crooked Creek was listed in 2010 and 2012. This was
misrepresented in the attached report.

Please let me know if you have any further questions.
Thanks.
Carla
-----Original Message-----
From: Thompson, Larry B
Sent: Monday, August 17, 2015 8:29 AM
To: Dagnino, Carla S
Cc: Haywood, Luther G
Subject: FW: TIP B5243 bridge replacement over south fork crooked creek (UNCLASSIFIED)
HI Carla,
Crystal Amschler contacted me with the following...
La rry
Larry Thompson, PWS, LSS
Environmental Supervisor
NCDOT - 10th Highway Division
704-301-4881 cell
-----Original Message-----
From: Amschler, Crystal C SAW [mailto:[e-mail]]
Sent: Monday, August 10, 2015 2:11 PM
To: Thompson, Larry B
Subject: TIP 65243 bridge replacement over south fork crooked creek (UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
La rry,
I've reviewed this one and have a couple of questions:
Can you please provide justification for replacing the bridge with a culvert. If it's in the package you sent I missed it.
Also, is the low flow culvert going to be buried to 1' in addition to having a 1' sill?
Thanks,
Crystal C. Amschler
Project Manager
Asheville Regulatory Field Office
151 Patton Avenue, Room 208
Asheville, NC 28403
(828)-271-7980 Ext 231
ra

The Wilmington District is committed to providing the highest level of support to the public. To help us ensure we
continue to do so, please complete the Customer Satisfaction Survey located at:
http://corpsmapu.usace.army.mil/cm apex/f?p=136:4:0
Classification: UNCLASSIFIED
Caveats: NONE
Email correspondence to and from this sender is subject to the N.C. Public Records Law and may be disclosed to third
parties.