20150023 Ver 2_Emails_20150914

Strickland, Bev
From: Jonathan L. McDaniel <jmcdaniel @bizec.rr.com>
Sent: Monday, September 14, 2015 5:35 PM
To: Steenhuis, Joanne
Subject: Marine Chevrolet
Attachments: SKM_C454e15091417280.pdf, SKM_C454el5091417300.pdf
Hi Joanne,
Hope you are doing well. Construction is underway at Marine Chevrolet, and the contractor has started drainage work
for the stream impact. For whatever reason, the manufacturer of the precast concrete drainage manholes left out the
12" inside drop for the last manhole. The contractor did not notice it, and I didn't catch it until last Thursday. We are
planning to retrofit the inside with a stainless steel plate to act as a weir and achieve the equivalent velocity reduction
we would have had otherwise with a gabion mattress. This is the easiest fix and does not conflict with our impact
schedule. I just wanted to notify you as a courtesy, and I also checked with Brad and he said this is just a field change
regarding engineering. I will have a notch at the bottom to allow draw down between storm events, and provide
hydraulic connectivity and passage for biological purposes. I am planning on doing a 3" tall by 12" wide notch. Please
see the attachments and let me know if you have any questions.
Thanks,
Jonathan L. McDaniel, PE
Parker & Associates, Inc.
Engineers * Surveyors * Planners
(910) 455 -2414
Firm License Number - F -0108
www.parkerenRineerinRandsurvevinR.com
1

Notes:
1. Box to be in accordance with NC DOT Standards. (840.01-.02) Box
to be enlarged to accommodate larger or multiple pipes as required.
fL RUBBER
2. Frame and grate to be U.S. Foundry & MFG. Corp. 4139 Frame &
IED TO TOP
6429 Grate or approved equal.
� -24" DIA '
3. All sediment, wet, mucky, or yielding soil materials shall be removed
-
and replaced with compacted select fill prior to placing base course.
..... • • • • . • • • • • • • • • • • • +
4. All drop inlets in asphalt surfaces shall have 2' wide concrete collars
1/2" DIA.
around inlet grate.
.. . ..... STAINLESS STEEL
..
... ,:; ,U
• BOLT
�� 3/4" RAD.
•3"
Y. PLACE "U" BOLT
,� ��.
12" FROM TOP
OF MH
r .....................�
ALL JOINTS TO BE T & G
°. �' ,�t✓J�.•..:: �W /PREFORMED BUTYL RUBBER
Gabion Mattress Installation Notes:
(MASTIC) GASKET MEETING
-- z•'S D :.� AASHTO M -198, ASTM. C -990,
1. The purpose of the gabion mattress is to meet the aquatic life passage requirement
... ;__.. �,; ;•
FED SPEC SS -S -00210 (210A)
for the stream impact. The gabion is to be installed at the some time as the
-
junction manhole.
2. The gabion mattress is to consist of rip rap with a 4" maximum diameter. The wire
.. ,�.�•; PRECAST MANHOLE TO MEET
mesh to encase the rip rap shall have 3" x 3" openings, and be corrosion resistant
REQUIREMENTS OF ASTM.
meeting ASTM 974 -97.
C478, AASHTO M -199
3. The gabion shall be installed flush to the 12" drop invert, and sloped at 5:1 to the
-" A
bottom of the junction manhole.
4. Install the wire mesh with a minimum overlap of 12 ", and secure overlap with plastic
-
zip ties or corrosion resistant wire meeting ASTM 974 -97.
F�w
IN a' 5:1 GABION MATTRESS
r -4" DIA. RIP RAP
•.
a + -3 "x3" MESH OPENINGS
a. -MESH TO BE CORROSION
RESISTANT MEETING
ASTM 974 -97
ATTRESS
'SASE
?TH(CIA. RIP RAP
"•
PLACE COMPACTED CORROSION
No. 57 STONE RESISTANT
FtiVV
MESH
—
AROUND ALL PIPES /
/
\ pUT
�i
Y 5'1 12'I,IRfDP FROM INV
/i{ TO 11$ID�OTTOM
EXTENDED BASE ON
ALL MANHOLES
Isometric View
Section View
Sia"\�+'lt` eLt 04'u
Drainage Junction Detail
A60 V v� -`c0 rixw deb w ^
Not to Scale
a"A at\)Ckk,L QaS4x",

Legend: Install Silt Fence
Ac. - Acreage I After Outlet Pipe 1297 LF of Stream
End Impact 5' Installed and Sod Impact with Mitigation X
t- . - Ele one IFrom Property l on Backslopes n�
elev. - Elevation ? '
X
ex. - ezistirg / q
44O .56 - existi n9 spot eievion
m ". mg
-r
0 J11 - Junction Box
N.C,S.R. - NC Secondary Road
RCP - Reinforced concrete Pipe
R/W - Right -of -way
+ � x45.77
X 0
:�
e o Nate: JB#1 and J8#2 to have 12" drop,
N and gabion mattress to dissipate energy,
SB#1 I see detail, Sheet 3 of 3.
•% Top 44.1
45
g5tream 40
at property line
elev. 36.90
3r
0.00
Headwall
Inv. Out 36.0
(12" Below Stream)
Project:
_Aa�
/
r
A_ I
KKK /
/
/ -A4
i
Plan View
Scale: 1"=40'
J8#2
Top 45.0
0.004 Acre
-y _ _ / / / I Open Water Impact
4 `�-4Y—
X41–'
/ 4• \ 0 \
End of Strean4
Mi
and Mitigaigation
Install Temporary
4' Earthen Dam
with Stone Face
+qb ex. inv.41.2 \
Finished Grade
Finit4gd Grade \,Xe
Ro
e
1\o!�
_ , 9rode 270 LF 36" RCP @ 0-5 %
0 g5 T- ex. tributary
- -- ' _ _
i 180 LF 36" RCP @ y __'__tee -vj' f
�—
I
slope - - lL51� — ,..��.. •� Open Acre I
• „� -''•• J - Open Water Impact
�. End of Stream
297 LF and Mitigation I
- .._.- .- _.. - - - - -- 1Inv.I Stream ImpImpact Inv. Ou w ay. o: _— --
0.50 1 +00 1.50 2"00 2.50 3 +00 3.50 4+00 4150
Inv. In 37.04
Inv. Out 36.04 11' +AEI slo" >' skee.l la CQ
,� -e. Profile View
16 LF 42” (� 1 A•4^Er
RCP @ 0.37 / wlk� hoiG� r�:- boj•�o�+
/JO+r.Li � Scale: Harz. 1 " =40'
inn i l� OelmiAS P, Vert, 1"-4'
s tream mpact - Sheet 2 of
Owners: Rev. 4/16/15 JLM - Add junction detail note, rev sheet #
MARINE CHEVROLET ADDITION
GATEWAY DRIVE SOUTH
White Oak Twp., Onslow Co., North Carolina
Southern Crescent, LLC
1408 Western Boulevard
Jacksonville, North Carolina 28546
Rev. 2/17/15 JJL - Revised pipes and JB s.
Date: 02/11/15
Scale: 1 " =40'
Field book: Jax Commons #4A, Pg. 6 -13
File Name: MARINE CHEVY - Impact Mops.dwg
Disk Name: Acad 2526
Drawn: ELB
3
Install Tempora
4' Earthen Dam
with Stone Face
ex. Z4" r =p =
J8#3
JB#3
Top 46.0
45
40
\ gInv. 40.0
(Drop Inv. 41.01
135 �d PoF ss °;���y9 ;
5+00: %Y�1E�V ••
37928
Z9' F`'1GINEtiP: P ?`:
Parker & Associates, Inc.
Consulting Engineers - Land Surveyors - Land Planners
P.O. Boa 976 — 28541 -0978
308 New Bridge Street — 28540
Jacksonville, North Carolina
Phone [phone] — Fax [phone]
Firm License Number: F -0108
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