20211410_External_ RE_ South Scales Street Additional Info Request

Carpenter,Kristi
From:Bailey, David E CIV USARMY CESAW (USA) <[e-mail]>
Sent:Friday, January 28, 2022 10:34 AM
To:Parker, Jerry A
Cc:Conchilla, Ryan; '[e-mail]'
Subject:\[External\] RE: South Scales Street Additional Info
Attachments:2019-01206 Compensatory Mitigation Breakdown.pdf
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.

Hi Jerry. I’m working on processing the permit for the above referenced project. While re-reading your response email
from 1/10/2022, I realized that the response to item 2) does not quite capture what I was trying to address. So, I’ve
attached a plan sheet with green polygons to break out the 3 stream reaches where the Corps will require compensatory
mitigation, as well as comment boxes with each impact length and compensatory mitigation ratio. Essentially I was
asking you to break the impacts reported as bank stabilization (a total of 69 lf) into bank stabilization west of South
Scales Street (which requires compensatory mitigation due to realignment of the channel) and bank stabilization east of
South Scales Street (which does not require compensatory mitigation as it is only rip rap on the banks). I scaled the
impacts using the plan sheet and came up with:
34 lf of bank stabilization west of South Scales Street;
35 lf of bank stabilization east of South Scales Street.
This totals the 69 lf of total bank stabilization proposed, so it should be approximately correct.

So, per the above, the Corps’ compensatory mitigation requirements for streams would be:
65 lf impacts due to culvert placement in Little Troublesome Creek (2:1 ratio);
54 lf impacts due to road fill in Stream SB (2:1 ratio); and
34 lf of bank stabilization requiring stream realignment in Little Troublesome Creek (2:1 ratio).

The above equals 153 lf of stream impacts requiring compensatory mitigation at 2:1, resulting in a compensatory
mitigation requirement of 306 stream credits.

Please confirm that this looks correct to you. Thanks.

-Dave Bailey

---
David E. Bailey, PWS
Regulatory Project Manager
US Army Corps of Engineers
CE-SAW-RG-R
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587
Office: [phone], Ext. 30.
Mobile: [phone]
Fax: [phone]
Email: [e-mail]

We would appreciate your feedback on how we are performing our duties. Our automated Customer Service Survey is
located at: https://regulatory.ops.usace.army.mil/customer-service-survey/
1

Thank you for taking the time to visit this site and complete the survey.

From: Parker, Jerry A <[e-mail]>
Sent: Monday, January 10, 2022 10:43 AM
To: Bailey, David E CIV USARMY CESAW (USA) <[e-mail]>
Cc: Conchilla, Ryan <[e-mail]>; '[e-mail]' <[e-mail]>
Subject: \[URL Verdict: Neutral\]\[Non-DoD Source\] South Scales Street Additional Info

Dave,

I have attached your email requesting additional info and provided answers in bold type. Please let me know if you have
any questions. Thanks.

All,

Thank you for your PCN, dated 11/5/2021, for the above referenced project. I have reviewed the information and need
clarification before proceeding with verifying the use of Nationwide Permit (NWP) 14 (https://saw-
reg.usace.army.mil/NWP2017/2017NWP14.pdf). Please submit the requested information below (via e‐mail is fine)
within 30 days of receipt of this Notification, otherwise we may deny verification of the use of the Nationwide Permit or
consider your application withdrawn and close the file:

1) Thank you for your inclusion of floodplain benches in the design for this project. Please provide additional
details on the floodplain benches, including the material make-up (stream bed material? rip rap? mixture?) and
stabilization measures (coir fiber matting?) of the bench itself, as well as a planting plan for the bench; The
floodplain benches on the upstream and downstream side of the culvert will be constructed with Class II Rip
Rap in order to provide channel and bank stabilization in high flow events. The benches will be lined with
Geotextile fabric and native grass seeding and mulching will be performed on the disturbed riparian areas as
specified in the Sediment and Erosion Control Plans.
2) Please note that the Corps would require compensatory mitigation for the permanent stream impacts resulting
in a loss of waters, including Impacts S2 and S3 in this case (119 linear feet), as well as the main flow channel
realignment on the west side of SR 2670; please calculate the impacts currently listed as bank stabilization for
the portion of Impact S1 on the west side of SR 2670. The compensatory mitigation requirement for these three
impact types will be set at 2:1 (mitigation to impact ratio) unless otherwise justified based on aquatic resource
functional quality (typically documented by NCSAM). Note that compensatory mitigation is not typically required
for bank stabilization impacts limited to the banks where channel realignment is not required (e.g. the portion of
Impact S1 on the east side of SR 2670). After deducting the impacts for bank stabilization at Site 1, NCDOT is
now requesting mitigation for 119 feet of impacts rather than 188 feet of impacts.

Jerry Parker
Environmental Supervisor
Division 7
North Carolina Department of Transportation

336 256 2063 office
[e-mail]

1584 Yanceyville St.
P.O. Box 14996
2

Greensboro, NC. 27415-4996

Email correspondence to and from this sender is subject to the N.C. Public Records Law and may be disclosed to third parties.
3