20200611 Ver 1_Stormwater Treatment_20200515

Strickland, Bev
From: Heath Caldwell <[e-mail]>
Sent: Friday, May 15, 2020 8:47 AM
To: Johnson, Alan
Cc: Daniel Kuefler
Subject: [External] Fwd: Royal Park
Attachments: SW_Treatment.pdf
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Alan -
See the attached drawing that shows the stormwater treatment. The small outfall near the UG sand filter is the
subdrain discharge from the sand bed which is treated water. The main outfall goes into the wet pond. The
sewer crossing in question is there to avoid the proposed sand filter below the cottage units. There is a bypass
pipe that is being extended through our site and discharging from the NCDOT ROW which is not required to
be treated. Let me know if this answers/satisfies your concerns here. Thanks -
Heath
---------- Forwarded message ---------
From: Daniel Kuefler <[e-mail]>
Date: Wed, May 13, 2020 at 3:15 PM
Subject: Fwd: Royal Park
To: Heath Caldwell <heath. caldwell(cr�,wetlands-og.com>
---------- Forwarded message ---------
From: Johnson, Alan <alanJohnson o,ncdenr.gov>
Date: Wed, May 13, 2020 at 3:04 PM
Subject: Royal Park
To: Len Rindner ([e-mail]) <[e-mail]>, Daniel Kuefler
<daniel.kuefler@wetlands-epg com>
This is in Meck. What's up with the outfalls? Treatment?? Why not cut the sewer over at the
thin part of the wetland. And impact 3 is a wetland fringe I assume. Just asking.

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DhtW■n of WAftT Res*urecn
*an D ]ohns n — Senior Environmental Spedk«
NE Dept. J Environment & Natural Resuee (NEDEN q
Division J Water Resources - WaterQukR Regional Operations
610 Ea « Center Ave.,SgG 301, Mooresville, NE 28115
Phone: (0)25220 Fax: (0)66364
E-mail co7esodnc to and from this address may be subject to the &off Carolina Public Records Law and may be
disclosed to third parties unless the content aexempt b statute or other regulation.
2

Daniel Kuefler
Wetlands & Environmental Planning Group
Leonard S. Rindner, PLLC
www.wetlands-epg.com [wetlands-epg com]
336.554.2728
Heath Caldwell
Wetlands & Environmental Planning Group
Leonard S. Rindner, PLLC
www.wetlands-epg.com [wetlands-ep coml
704.999.5279

Impact Ana 3
Area J
Areal

WSTORM
BMP Inset Table
Extended ry Detention
Project Name:
The gallery at Royal Park
Sequence D:
2A
Surface Area (sq. ft.).
3,875
Drainage rea acres:
3.98
Land Use/Development T
Institutional Areas
Vegetation Type:
Grassed
Percent Built -Upon Area:
60
Maximum Depth (ft.):
4
Detention Basin T
Surface
Forebay Present (Y/N):
N
Flow Diverters Present (Y/N).
N
Regulated By
Post Construction Ordinance
Treatment Effectiveness:
Standard
NC State Plane X easti
1494648A5
NC State Plane Y(northing):
501410.56
WOODED
768 --- - /:--
__---------
-_-
Kll
BMP Inset Table
Extended Dry Detention
Project Name:
The gallery at Royal Park
Sequence ID:
1A
Surface Area(sq. ft.):
11,800
Drainage Area (acres):
10.37
Land Use/Development Te:
e 025acres -ResidentiaVA t/Rowhouse
Ve etation Type:
Grassed
Percent Buift-U on Area:
43
Maximum Depth (ft.):
4
Detention Basin Type:
Surface
Forebay Present (YIN):
Y
Flow Diverters Present (Y/N):
N
Regulated By:
Post Construction Ordinance
Treatment Effectiveness:
Standard
NC State Plan X easti
1494585.52
NC State Plan Y(northing):
500978.39
0766 j
STORM
WAR
BMP Inset Table
Sand Filter
Project Name:
The Gallery at Royal Park
Sequence D:
1
Drainage Area (acres):
10.37
Land Use/Development Type:
<025 acres - Residential/Apt/Rowhouse
V etationT
Rock/Stone sandfifters
Percent Buift-U on Area:
43
Sediment Chamber Length (ft.):
6D
Sediment Chamber Width (ft.):
53
Sediment Chamber Height (ft.):
1
Sand FifterT
Surface
Media Depth ft.:
2.5
Media Surface Area (ft2):
1661
Flow Diverter Present (Y/N):
N
Regulated By
Post Construction Ordinance
Treatment Effectiveness:
Standard
NC State Plane X (eastirg):
1494585.52
NC State Plane Y (northing):
500978.39
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