20191283 Ver 1_More Info Received_20191029

Homewood, Sue
From: Weikmann, Amanda <[e-mail]>
Sent: Tuesday, October 29, 2019 10:44 AM
To: Munzer, Olivia; Jones, Brena K.
Cc: Hamilton, David; McCall, Jeremy; Jay N. Guffey [e-mail]);
Homewood, Sue; [e-mail];[e-mail]
Subject: [External] NCWRC Comments - Birch Creek Sewer Improvement PCN - Guilford
Attachments: Arcadis Response to NCWRC Comments.pdf, Birch Creek Photolog - Greensboro
Burrowing Crayfish.pdf
rnal email. Do not click links or open attachments unless you verify. Send all suspi 01
nc. ov
Hi Olivia and Brena -
Attached is Arcadis' response to your comments on the Birch Creek Sewer Improvements PCN and a photolog from our
initial site investigations for the Greensboro Burrowing Crayfish.
In regards to the Greensboro Burrowing Crayfish, what would be the next steps after preliminary site inspections?
Please let me know if any further action is required to satisfy the NCWRC concerns.
Thanks,
Amanda Weikmann, El
Arcadis I Arcadis G&M of North Carolina, Inc.
Direct [phone]
From: Munzer, Olivia <[e-mail]>
Sent: Monday, October 14, 2019 12:17 PM
To: Hamilton, David <[e-mail]>
Cc: [e-mail]; Homewood, Sue <[e-mail]>; John Ellis <lohn [e-mail]>;
Jones, Brena K. <[e-mail]>; [e-mail]
Subject: NCWRC Comments - Birch Creek Sewer Improvement PCN - Guilford
Good afternoon,
Please see the attached comments. Is there an estimated date for the proposed start of construction? Thank you,
Olivia
Olivia Munzer
Western Piedmont Habitat Conservation Coordinator
Certified Wildlife Biologist
NC Wildlife Resources Commission
Rogers Depot, 1718 NC Hwy 56 West
Creedmoor, NC 27522
Office: 919.707.0364 H Cell: 336.269.0074
[e-mail]

www.ncvvildlife.org
130120
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PHOTOGRAPH LOG
Birch Creek Sewer Improvements Phase I & II
04ARCADIS Destgn &Consultancy
for natural and
built assets
The following is a collection of representative photos from the Birch Creek Sewer Project area during initial site
investigations on October 17 and October 18, 2019. The purpose of the site visits was to look for potential
indicators of the Greensboro Burrowing Crayfish. The overall stream area along both Tributary 5 and Tributary
6 to Little Alamance Creek are very similar with a few exceptions. Looking specifically for holes 1" — 3" in
diameter along the bank was difficult as there were many covering the banks from the water surface up to the
top of the bank (3 to 4 ft high). Some tracks were spotted in the sand both under the water and on sandbars —
we are unclear if they could have been made by crayfish, minnows or other wildlife. See the Birch Creek
Sewer General Area of Photos figure for highlighted approximate locations where photos were taken.
Photograph 1:20191017_145308
Photograph 3: IMG-1100
Photograph 2: IMG-1094
Photograph 4: IMG_1101
GRGRN400.D001, .D002 Page 1 of

PHOTOGRAPH LOG
Birch Creek Sewer Improvements Phase I & II
Photograph 5: IMG_1104
Photograph 7: IMG_1115
Photograph 9: IMG_1149
04ARCADIS benign lFancy
for natural and
built assetssets
Photograph 6: IMG_1114
Photograph 8: IMG_20191018_142433
Photograph 10: IMG_20191018_144143
GRGRN400.D001, .D002 Page 2 of 3

PHOTOGRAPH LOG
Birch Creek Sewer Improvements Phase I & II
Photograph 11: IMG_20191018_143345
Photograph 13: IMG_20191018_144221: Second
crayfish
Photograph 15: IMG_20191018_144817
04ARCADIS benign lFancy
for natural and
built assetssets
Photograph 12: IMG_20191018_144353: Two crayfish
were found under neighboring rocks on a chance
turning over
Photograph 14: IMG_20191018_144221: Section of
stream where crayfish were found
GRGRN400.D001, .D002 Page 3 of 3

Legend
Streams
Zone 1 Buffer (30 feet)
Birch Creek Sewer Alignment
® Wetlands
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N Birch Creek Sewer
AGeneral Areas Where Photos Are From
AARCADIS
October 2019

Olivia Munzer
NC Wildlife Resources Commission — Habitat Conservation
1721 Mail Service Center
Raleigh, NC 27699-1721
ARCAD1&Design & Consultancy
fornaturaland
built assets
Arcadis G&M of North Carolina,
Inc.
7029 Albert Pick Road
Suite 101
Greensboro
North Carolina 27409
Tel [phone]
Fax [phone]
Subject:
Pre -Construction Notification for the Birch Creek Sewer Improvements Phase I & II,
Greensboro, Guilford County, North Carolina. DEQ No. 2019283 WATER
Dear Ms. Munzer:
In response to your "NCWRC Comments — Birch Creek Sewer Improv PCN —
Guilford" letter dated October 14, 2019, we have reviewed your comments and
have provided responses below, following the order shown on Page 2 of your
letter.
1. Arcadis has performed a preliminary site inspection looking for potential
indicators of the Greensboro burrowing crayfish. A brief report and
photos from the site visit are included with this submittal. Brena Jones
will be notified as well.
2. With regard to the preferred 100-foot setback and 50-foot setback for
perennial and intermittent streams, respectively, and wetlands: In close
coordination with NCDEQ-DWR we have attempted to provide as much
stream/buffer set -back as possible for this utility construction. Along most
of its length we are outside the Zone 1 30-foot Jordan Lake riparian
buffer for tributaries to Little Alamance Creek. However, because the
gravity sewer will connect between an existing manhole and the Lift
Station being abandoned, the sewer must be at elevations able to
connect at both these locations. Furthermore, the sewer line needs to be
constructed at an elevation to accept incoming collector sewers
connecting from both sides of the stream which requires that the sewer
remain as close as possible to the stream alignment for those
connections to be feasible. Therefore, the sewer alignment needs to
remain fairly close to the creek as shown to avoid excessive sewer
depths and associated construction clearing (i.e. the deeper the sewer,
the wider the easements, and more clearing and environmental impacts).
Date:
October 29, 2019
Contact:
David Hamilton
Phone:
336.443.2472
Email:
[e-mail]
Our ref:
GRGRN400.D001, .D002
ARCADIS GSM of North Carolina, Inc.
NC Engineering License # C-1869
NC Surveying License # C-1869
Page:
G:\PROJECT\Greensboro NC\Birch Creek W&S Extension (GRGRN400.D001)\Regulatory\USAGE & DEQ\NCWRC\Response to NCWRC Comments.docx 1 /2

Ms. Munzer
NCWRC — Habitat Conservation
October 29, 2019
3. Open trenching is considered the only viable option for some stream crossings. Riprap will be
used at permanent maintenance crossings, due to erosive forces of the stream, as shown on the
drawing details, with the riprap surface at an elevation at or below the stream bed and at or below
the normal high-water mark. Work will be completed in the dry using sandbagging and pump
around as needed.
4. Stream crossings were designed to be perpendicular or near perpendicular to stream flow, as
allowable by site conditions. The City of Greensboro continually maintains and operates their
sewer system and will routinely monitor the sewer route with emphasis on the first 24 months of
operation.
5. Our details (Sheet MD-5) for temporary and permanent wetland seeding state that fertilizer will
only be used when soil testing shows that it is necessary and approved by Engineer/Owner.
6. Our project specifications (Section 01 57 05 temporary Controls) note these requirements for
pollution prevention.
7. Only tree removal that is necessary to provide sufficient construction width is allowed by/shown
on the drawings. The expected construction schedule calls for clearing to begin approximately in
January 2021 and conclude soon thereafter. Corridor maintenance will need to be performed
throughout the year, since the workforces required operate throughout the mowing season to
maintain hundreds of miles of utility line corridor across the City; limiting easement maintenance
to April -October with the available resources is infeasible.
8. Native species for revegetation is prescribed by the project specifications (Section 32 92 00 lawns
and meadows).
9. Our project specifications (Section 01 57 05 temporary Controls) note these requirements for
sediment and erosion control.
Sincerely,
Arcadis G&M of North Carolina, Inc.
David Hamilton, PE
Project Manager
Copies:
Jeremy McCall, Arcadis
Jay Guffey, COG
David Bailey, USACE
Sue Homewood, NCDEQ — DWR
John Ellis, USF&W
arcadis.com Page:
G:\PROJECT\Greensboro NC\Birch Creek W&S Extension (GRGRN400.D001)\Regulatory\USAGE & DEQ\NCWRC\Response to NCWRC Comments.docx 2/2