20191521 Ver 1_USACE Verification 082819_20191125

Strickland, Bev
From: Tinklenberg, Chris <[e-mail]>
Sent: Monday, November 25, 2019 12:16 PM
To: Johnson, Alan
Cc: Roden Reynolds, Bryan K CIV (US)
Subject: [External] RE: Atrium 19-1521
Attachments: Aston Gateway Commons Delineation Map 061719_USACE Verification 082819 (1).pdf
• ' External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
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Hey Alan,
• The sanitary sewer shown on the plan is existing, they'll only be tieing into it, so there are no proposed bank
impacts and no additional buffer impacts.
• The verified delineation map from WPEG is attached. Not sure which Figure 4 you have from them... could be
old. There is a 200 If section of Stream B and an approximately 130 ft long x 5 ft wide section of linear Wetland
H that drains down to the driveway culvert. These features are proposed to be permanently filled. The impacts
are based on surveyed delineation flags and not how the features are depicted on the hand -sketch. As
mentioned in the PCN, a French drain or similar will be installed in those locations to convey subsurface drainage
to maintain contributing streamflow.
• There is no opportunity to install an additional BMP at the upstream end of the project since this area is being
designated as part of the tree -save area.
• They anticipate development in the eastern portion of the property, however, there is not a plan currently.
• Not sure what culverts you'd like to see but let me know and I'll revise as necessary.
Hopefully that addresses all your questions, but please let me know if you need any additional clarification.
Thanks,
Chris
Chris Tinklenberg, PWS
Kimley-Horn 1200 South Tryon Street, Suite 200, Charlotte, NC 28202
Direct: 704 409 1802 1 Mobile: [phone]
From: Johnson, Alan <[e-mail]>
Sent: Wednesday, November 20, 2019 11:33 AM
To: Tinklenberg, Chris <[e-mail]>
Cc: Roden Reynolds, Bryan K CIV (US) <Bryan.K.Roden [e-mail]>
Subject: Atrium 19-1521
Ok, this is confusing. Fig 4 (WPEG) provides different information than Fig 4a (Kimley-horn) or
it does to me. F4 states 400 ft, Ma states 200 ft and doesn't show culverts for clarity. And
the larger site plan doesn't show the "outparcels". I see the overlaids on aerial which I are the
inserts. I can tell what you are submitting, but it feels disjointed. S4 would be perennial
1

stream and not is not in the area of impacts.
Any plans for the other side of the stream(s).
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604) moot;
I believe this home is included in the parcel.
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1) The sewer easement extends across the top of stream bank in two sections and is
located in the buffer for the entirety of the site
2) Section C, given the open area (or appears to be) it seems this could be pull back and
allow room for sewer.
3) Given that the site is heavy on parking, arrangement of the site should be accomodating
to
4) Section A & B, I think I figured it out with the aerial and that is the area of impact. Just
need to clarify the 400 vs 200 etc.
5) Given that the entirety of the area is being paved. Having a SW BMP at the top end of
the stream would be beneficial to maintaining stream flow and habitat rather than
sending all to the down gradient end. (2 bmps vs 1 bmp)
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Alan D Johnson — Senior Environmental Specialist
NC Dept. of Environment & Natural Resources (NCDENR)
Division of Water Resources - Water Quality Regional Operations
610 East Center Ave., Suite 301, Mooresville, NC 28115
Phone: [phone] Fax: [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties unless the content is exempt by statute or other regulation.
3

• PROJECT BOUNDARY
•
STUDY LIMITS
F -
■ � Y
■
• rF
• k
k
• INTERMITTENT
•
■ STREAM D
■
• -Dl Loc C/L &
Width Onsite
L
WETLAND C/CC
-C1-11, -Cl & C11 TT Pipe
-CC1-11,-CCl/Cl0,-CCll/C9
-USACE Verification 8/28/19
�M1 12" PIPE
■
STREAM B \� ♦•
-131-2, -132 tt H1 •��
-USACE Verification �.♦
8/28/19 WETLAND H ♦♦♦
-H1 Loc C/L & Width to A STIR _
-USACE Verification 8/28/19
k
WETLAND F
41-9, -Fl&9 tt H Series
CULVERT
PERENNIAL STREAM A
-Loc C/L & Width Onsite WETLAND E
-E1-16
INTERMITTENT STREAM G -El
-USACE Verification 8/28/19 TT & A STR
***USACE VERIFICATION 8/28/19*** TT
FIGURE NO. GATEWAY COMMONS Drawn By: Reviewed By:
Union Co., NC NRN LSR
DELINEATION MAP DATE:
-WATERS OF THE U.S.- 6/17/19
- FURTHER STUDY REQUIRED
i i SUBJECT TO USACE/NCDEQ VERIFICATION