20201132 Ver 1_Culvert Update_20200915

Strickland, Bev
From: Heath Caldwell <[e-mail]>
Sent: Thursday, September 17, 2020 2:55 PM
To: Johnson, Alan
Subject: [External] Fwd: town @ cannon
Attachments: 1515 Cannon Ave Townhomes Stream & Wetland Impact Exhibits WL-7.pdf
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Hey Alan -
The attached look better?
---------- Forwarded message ---------
From: Long Quach <[e-mail]>
Date: Thu, Sep 17, 2020 at 11:41 AM
Subject: RE: town @ cannon
To: Heath Caldwell <heath. [e-mail]>
Cc: Steve Wilson <[e-mail]>, Matt Langston <mlan sg [e-mail]>, Steve
Harrington <[e-mail]>, Len Rindner <[e-mail]>
Health,
Sorry for the late response. We've been reviewing if this would bring any impact to the flood study, and after
checking into it we think the flood study is still fine.
The WL-7 exhibit is updated to address Alan's comment. Please review and let us know if this will satisfy him.
Thanks,
Landworks
Design Group,P
Long Quach, E.I.T
Civil Designer

7621 Little Avenue, Suite 111
Charlotte, NC 28226
704-841-1604 Ext. 713 (office) / 704-841-1604 (fax)
http://www.landworkspa.com
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From: Heath Caldwell <[e-mail]>
Sent: Thursday, September 17, 2020 7:13 AM
To: Long Quach <Long.Quach o,landworkspa.com>
Cc: Steve Wilson <swilson o,landworkspa.com>; Matt Langston <mlan ston o,landworkspa.com>; Steve
Harrington <sharrin ton o,landworkspa.com>; Len Rindner <len.rindner@wetlands-epg com>
Subject: Re: town @ cannon
Long -
Checking back in on this one to see what ideas we have to address Alan's comments here. Let me know or give
me a call with any questions. Thanks -
Heath
On Fri, Sep 11, 2020 at 3:29 PM Heath Caldwell <[e-mail]> wrote:
Long -
Just wanted to pass along Alan's comments. We could potentially modify the Road Culvert 92 Headwall
Elevation to match what Alan is wanting. Essentially there is a floodplain bench that matches the elevation of
the sills on the outside culverts on both the upstream and downstream side. Something similar to what is shown
in the attached pictures. Let me know what you think we might include or respond with to satisfy what Alan is
asking for here. Thanks-

Heath
---------- Forwarded message ---------
From: Johnson, Alan <alanJohnson o,ncdenr.gov>
Date: Fri, Sep 11, 2020 at 2:40 PM
Subject: town @ cannon
To: Heath Caldwell <heath.caldwell@wetlands-epg com>
I want to make sure the engineer understands that the two outside culverts the fill/bench should
go to the top of the 1.5 sill, and the base flow (middle culvert) would be up to the 1 ft
sill. Immediately up/down stream (inlet/outlet) Thanks
., 66"
AUNA
OTING
DWR
b1wWork of "'Ater kc;ourccs
Alan D Johnson — Senior Environmental Specialist
NC Dept. of Environment & Natural Resources (NCDENR)
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Division of Water Resources - Water Quality Regional Operations
3

610 East Center Ave., Suite 301, Mooresville, NC 28115
Phone: [phone] Fax: [phone]
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disclosed to third parties unless the content is exempt by statute or other regulation.
Heath Caldwell
Wetlands & Environmental Planning Group
Leonard S. Rindner, PLLC
www.wetlands-epg.com
704.999.5279
Heath Caldwell
Wetlands & Environmental Planning Group
Leonard S. Rindner, PLLC
www.wetlands-epg.com
704.999.5279

Heath Caldwell
Wetlands & Environmental Planning Group
Leonard S. Rindner, PLLC
www.wetlands-epg.com
704.999.5279

WIN
KIR FW IF KGPi(IgtRn Mg

TOP OF WALL
ELEV. = ±748J
75
PROPOSE[
HEADWALL
TOP OF BANk
STREAM BANK STAI
RIP RAP AF
RIP RAP TO BE F
THE CHANNEL E
ABOVE THE TYPIC
ELEVATION: NOT V
74
EXISTING GRAD
AT INTERMITTEN
STREAM
PROP. 4" DIP WATE
PROPOSED
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DE
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ANKS ±12"
/
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4L WATER
RIP RA
'ITHIN THE
RIP RA
STREAM
ON THI
62 LF PROP
CULVERT
BANKS
TYPICI
TOTAL STREAM
IMPACT: 72LF
EVA
TH
THE S
(MEASU
ED AT
E
I;
PROP.
8" DIP WATER
PROP. 8" DIP SEWER
CL
R
CULVE
T CROSSING
#2
734
PROFILE - UTILITIES & ROAD CULVERT CROSSING #2
SCALE H: 1"=40' V: 1"=10'
TOP OF
HEADWALL
3-66"
)P OF WALL
_EV: = ±749.1
'50
DPED WINGWALL
:YOND)
N. BURY IN PIPE
NCDENR 401
MIT READ.
0 BANK
IZATION
ARMOR TYP.
TO BE PLACED
:CHANNEL
±12" ABOVE THE
,L WATER
-ION; NOT WITHIN
REAM
TING STREAM
3RADE
'34
D----- ------ ------ --------------
HEADWALL 1.5' SILL
FOOTING
1.5' SILL 1.0' SILL INVERT OF 66" PIPE
UPSTREAM AND DOWNSTREAM (MMIIN.)
BELOW FIN. GRADE
- BENCH OF CULVERT TO BE
(
D FILLED TO TOP OF SILL ELE. NOTE: THE SILLS ARE PROPOSED AS SHOWN
ROAD CULVERT #2 ELEVATION AT HEADWALL TO MAINTAIN THE FLOOD ELEVATION.
THE FLOOD ELEVATION CANNOT BE RAISED
SCALE: NOT TO SCALE TO AVOID FLOODING ON ADJACENT
PROPERTIES AS REQUIRED BY THE CITY.
DATE:
t. CULVERT PROFILES & ELEVATIONS August 21, 2020
Landworks THE TOWNS AT CANNON AVE PROJECT NO 19004
Design Group, PA SHEET#
n CREATING SPACES TIVE, WORK AND PLAY THE ARDENT COMPANIES WL-7
j7621LRdeAverw-Sufte111 t*704-841-1604 CITY OF CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA SCALE:
AS SHOWN