20190293 Ver 1_More Info Received_20190412

Strickland, Bev
From: David Newton <[e-mail]>
Sent: Friday, April 12, 2019 10:19 AM
To: Price, Zan (George)
Cc: [e-mail]; Fuemmeler, Amanda J CIV (US); Leslie, Andrea J; Nick Bowman;
Gary Davis
Subject: [External] RE: Request for Additional Information - Robert Lake Park - DWR
2019-0293 - Buncombe County
Attachments: Robert Lake Park Restoration Rev. 1 4.11.19.pdf, Robert Lake Park DWR Response
Letter 4.12.19.pdf, Robert Lake Park - Flat Creek Cross Section Data 4.11.19.pdf
External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
[e-mail]
Hello Zan,
We have completed the response to your Request for Additional Information. Attached is a letter detailing our
responses, a copy of the revised plans, and pertinent data sheets. Please let us know if you have any questions or need
additional information.
Thank you,
DAVID S. NEWTON
ALMA
f)av is Civi 1501 W lofts, rx
Phone: [phone] Ext. 104
Fax: [phone]
david(Maviscivilsolutions.com
info(Maviscivilsolutions.com
From: Price, Zan (George) <[e-mail]>
Sent: Monday, March 25, 2019 2:21 PM
To: Nick Bowman <[e-mail]>; David Newton <[e-mail]>
Cc: [e-mail]; Fuemmeler, Amanda J CIV (US) <[e-mail]>; Leslie, Andrea J
<[e-mail]>
Subject: Request for Additional Information - Robert Lake Park - DWR 2019-0293 - Buncombe County
On March 1, 2019, the Division of Water Resources (Division) received your application dated March 1, 2019, requesting
a 401 Water Quality Certification from the Division for the above referenced project. The Division has reviewed the
information and has determined the application is incomplete and cannot be processed. The application will be placed
on hold until the following items are addressed:
1. Please provide the proposed typical channel cross-section for each area where channel substrate will be
excavated and relocated. Please include the proposed channel depth, width, and side slopes based on a stable
reference cross-section or regional curve data.
2. Provide a typical detail for the bank stabilization work proposed on Sheet C8.
3. Based on the site visit on March 21, 2019, it appears the plans might change for the boulder wall repair shown
on Sheet C9. Please provide an updated plan for this area.

Pursuant to Title 15A NCAC 02H .0502(c), the applicant shall furnish all of the above requested information for the
proper consideration of the application. If all of the requested information is not received within 30 days, the Division
will be unable to approve the application and it will be returned.
Zan Price, P.E.
Assistant Regional Supervisor — Asheville Regional Office
Water Quality Regional Operations Section
NCDEQ — Division of Water Resources
828 296 4662 office
828 231 9634 mobile
zan.pricea-ncdenr.gov
2090 U.S. Hwy. 70
Swannanoa, N.C. 28711
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

Davis CivilSolutions, PA
April 12, 2019
Mr. Zan Price, PE
NCDEQ-DWR
2090 U.S. Hwy. 70
Swannanoa, North Carolina 28778
RE: DWR 2019-0293
Response to Request For Information
Robert Lake Park Restoration
Montreat, North Carolina
Dear Mr. Price:
We have received comments via email for the subject project, dated March 25, 2019. We
have revised the plans based on those comments. A digital copy of the revised plans has been
uploaded for your review. Our responses are listed in the same order as your comments:
1. A typical channel cross-section for Flat Creek has been added on Sheet C3.1.
Attached are the regional curve data sheet used to calculate the cross section. The
site-specific calculations were performed holding the calculated cross-sectional area
constant and averaging the available bankfull width on site, thus the site-specific
bankfull depth increased from the calculated bankfull depth. All other stream
channel excavation on the site has been removed from the plan.
2. A typical bank stabilization detail has been added to Sheet C8.
3. The scope of repair to the boulder wall repair has been reduced to focus on the
single dislocated boulder.
4. Additional revisions to the plans include:
a. The existing boulders at the Jersey Barrier are shown and labelled "...to
remain".
b. "In -the -dry" is added to excavation areas.
c. Precast foundations and "No wet masonry..." notes.
d. Filling the sandy cross connection area is deleted.
e. Creation of a boulder point on the Swings Island.
We trust the attached information is sufficient for your review and approval. Should you
have any question, please don't hesitate to call.
Attachments
Sincerely, �
DAVID S. NEWTON
Engineering/ Planning • Site/Infrastructure
135-A Charlotte Highway • Asheville, North Carolina 28803 • 828.299.9449 PH
[e-mail] EMAIL

1000
m Z$,
10
tC
('LR T 4EK AT RoBr(ZT LAKE ?AKIK
NC Rural Mountain Regional Curve
10
7 Z-0 10 100 1000
�O.i Drainage Area (Sq. mi)
HC Rural Mountain Regional Curve
1 3 ApIU 'iuu
fpa Drainage Area (Sq. mi)
1000

Table of Regional Curve data for the Mountain region:
Equations for the Regional Curve Relationships:
Bank ull Cross -Sectional Area 4s. Drainage Area: y = 21.61x0.68
Bankfull Discharge vs. Drainage Area: y = 100.64x0.76
Bankfbll Width vs. Drainage Area: y = 19.05x037
Bankfull Mean Depth vs. Drainage Area: y = 1.11xO31
a where s - drainase area
GAcc uI.a T >_ D
FIAT CREEK 1.83 23o 44 2P 1.6 0.058
$ITC SPEc-IFIC
FLAT CREEK Z -T3 Z50 49 iG M
Gage SWk.
Stream
Baahf II
B.�kra
B°°kf°B
BaekThB
water
R.etare
Eae.edenr.
i3�a
Stream Nem.
D)
Try.
t,,. Or
area (mi27
Duchars.
X.. Area
Wdth (B)
Me. Depth
sorfaee Slope Ivtzcsel
PrebabUfty
`lO°.1
cr-nee)
i.fe)
(0)
Qe)
0")
(Yeas)
i86)
) ([aekea(1-6.
Fr.&BreadA
R..
3439000
FA
67.9
3226
5449
82A
6.6
OA009
13
0.77
93
hlillr Ricer
3446000
C4
66.7
2263
333
743
45
0.0035
19
0.53
90
Mndaot RB-er
3441000
BSa
40.4
1457
316
87.6
3.6
0.004
1.1
0.91
94
Cetbep Creek near
344000
B4c
I I ^
470
942
38
25
0.013
167
0.60
94
Bread
„
Wmf Forkofthe
3455500
B3r
27.6
2433
2779
80.6
3A
0.0077
1.10
oll
Pi.
110
East Fork Pie=
River
3456500
B
315
3430
4463
107
43
iacomple
159
0.63
70
Walaaga Ricer
3479000
B4r
921
3492
572
140.3
4.1
0.0033
125
0.80
56
Big Lamel
3454NO
54
126
2763
406
110.8
3.7
0.0045
139
0.63
42
East
E
.A
a'a
B3a
2.0
242
393
27A
IA
0.043
a&
as
4S
o C e kkckeg
Cold SprigCreek
V.
34
5.0
352
744
429
1.7
0323
mi
W.
50
Caldwell Fork
n'a
B
139
560
793
39A
2.0
0.02
mh
aS
74
C-Iw"chae
3460000
34c
46.9
1320
1869
55.7
32
OMS
1.60
0.63
74
Be. Tree
3450000
B3
3.46
2315
36
32.1
1.7
mcm@lete
1.65
034
North Fork
344594203
C3
143
853.7
170.6
693
25
--717
Bmmnanoa
Equations for the Regional Curve Relationships:
Bank ull Cross -Sectional Area 4s. Drainage Area: y = 21.61x0.68
Bankfull Discharge vs. Drainage Area: y = 100.64x0.76
Bankfbll Width vs. Drainage Area: y = 19.05x037
Bankfull Mean Depth vs. Drainage Area: y = 1.11xO31
a where s - drainase area
GAcc uI.a T >_ D
FIAT CREEK 1.83 23o 44 2P 1.6 0.058
$ITC SPEc-IFIC
FLAT CREEK Z -T3 Z50 49 iG M

Stream Restoration Plan For
Robert
Lake Park
MONTREAT, NORTH CAROLINA
Owner/ Developer: Mountain Retreat Association
Contact: John Quinzi
828.545.4551
P.O. Box 969
Montreal, NC 28757
PIN: 0710-96-8414
Davis CivilSolutions, PA
Site/ Infrastnlcture• Engineering/Plaludng
135-A CharlotteHighway Asheville, North Carolina 28803
828 299.909 PH- wrvvv.davLstivilsolutirnss.mm
Index of Drawings
G1. Cover Sheet
Cl.
Montreal
C2.
Existing Conditions -
ASSEMBLY OR
East Bridge
C3.
i
el C3.1.
Platt Creek Cross Section
xlsting on ions -
e-`
A P
Project
?x
Location
North Bridge
Q
4
Existing Condtions-
South Bridges
C7.
Propos ed Conditions -
South Bridges
C8.
Bank Erosion
C9.
3
C10.
USGS Topographic Map
Black rc
STATE ST
0
Mountain
h
EXIT 64,
1-40
Vicinity Map
NOT TO SCALE
Index of Drawings
G1. Cover Sheet
Cl.
Existing Conditions - Overall
C2.
Existing Conditions -
East Bridge
C3.
Proposed Conditions -
el C3.1.
Platt Creek Cross Section
xlsting on ions -
North Bridge
C5.Proposed
Conditions -
North Bridge
C6.
Existing Condtions-
South Bridges
C7.
Propos ed Conditions -
South Bridges
C8.
Bank Erosion
C9.
Path Wall
C10.
USGS Topographic Map
28, 2019

EXISTING CONDITIONS LEGEND
she CAR BASIN
sea CURB INLET //
0. WATER METER
1F' r
�. D HYDRANTMONT POUE�3
♦
UTILITY POLE �-
WY MRE ANCHOR
(y„ SIGN I_�
uvenw FlIaSHED ROCK ELEVATON ON LINE
TREES \��� �i /J / �_,,��p '
0 SHRUBS / DU41E5 I.E.: 12622.07' n�, -' -C+"^'-
v CULVERT //%/ �.. w /
FENCE
e__ ___r APPROXIMATE LOCATION Of
UNDERGROUND ELECTRIC UNE b�^i
APPRoXMATE LOCATION aF
-- OIERHEA0 ELECTRIC UNE /// �// '�� O O �
-------------- APPfi..ATE LOCATION OF
UNDERGROUND TELEPHONE I
APPROXIMATE LOCATION Of /T IL E OUSIJ
OVEMERI
1EAD TELONE UNES
m - m -L+- RIGHT -OP -GHAT / //
TREEU„E DIP 8 SD
0000000000 SHRUBU„E
YRCYERTT UNE NOT SVRY£YFO CIS
RCCKUNE
---- STREAM UNE
STREAM UNE - 2000•-� \\ \P/ l C / /�
ROSION \_ `vv �f • OI . i N
CEMTERUNE VARIANT �(`� �2 eVA
SWAMPIUNDS
APPROXIMATEXIMATE LOCATION OF /.. / , I\ 1LT} ryOTIP
OVERHEAD UTILITY ONE
SURVEY BOUNDARY
JERSEY BARRIER
LOCATION BASED UPON
3/27/2000 DESIGN BY
MARY WEBER, LA. (TYP.)
C6 C7
E!: 2413// A� E.: 2618.00'
l
I. .: 2 1.2�R
CATCH BAST Y._r \ C9
GRATE EL: 2614.30'
a
15' CPP IN I.E.: 2612.48' \ \ 2 5 J\ II© �'�\ \ W
15" CPP OUT I.E.: 2612.46'
\ B
CATCH BASIN z O C � SIGN
I: cnzEB H Trp
.
GRATE EL: 2614.58' `\ c
IPF IRON PIN SET 15" CPP IN LCMP
E.: 2612.71'
RBE REBAR FOUND\\ - � �T - ON LINE
ONPF OPEN TOP IRONPIN
FOUND 15" CPP OUT I.E.: 2612.70'
C➢PF CRIMPED TCP IRON PIN FOUND CATCH BASIN
Eau CONCRETE MASONRY UNIT CATCH BASIN • \ • PLAY AREA GRATE EL: 2623.19'
R/W RIGHT OF WAY C1 I ,(Y ,L OrTr
e OENTERLINE GRATE EL: 2614.86' '(°ACs TOT I LOT' Q � 15" CMP I.E.: 2620.07'
C CURVE (FEE CURLS TABLE) - / I
PCB PONT OFBEONNING INV. EL: 2613.15 0-;..p{s, /�,O�'/pj�� / 24" CMP I.E.: 2620.40'
C, CALCULATED PONT \\ / V� O /
PB PLAT Bao« CATCH BASIN • p <; �q O:
DB DEED BOOK
GRATE EL: 2614.76'
L LINE (EEE UNE TABLE) ON I LI
BIOG BUILDING \
CF CAST'lRON CORRUGATED METAL PIPE FF \4. / ' SURVEY BOUNDARY
I CO„ttrcTE •,e _;_:NEON LIt1IE II i LINE (TYP.)
CMV CONCRETE MASONRY UNIT .n It / IjPy
CPP CCRRUCATED PLASTIC PIPE SPIGOT
OO,r ( '.n IISp , \ j q,� N T
DIP DUCTILE IRON PIPE �!�/V ((� SLV -----
Ear E ECERIt @ TELEPHONE . _ / /' / / /�_ '� - -- - ,,,♦
FOC FlM OPTIC CABLE •V _/
DIP GALVANIZED IRON PIPE // /--
a/N OVERHEAD CATCH BASIN-'_ - _ / / /
flOP REINFORCED CONCRETE PIPE �/// / %!
U/G UNDERGROUND GRATE EL: 2614.79'
VCP
VITRIFIED CLAY PIPEINV. EL: 2613.49' TRPS
YNNtt
PM POCHLORIDE PIPE
BFINISHED FLOOR ELEVATION
REF REFERENCE _EYE jlY / \\ y�O1 t
DOT DEPARTMENT OF TRANSPORTATION •j\U' r GREEN/ P I L
has NATIONAL COMIC SURVEY Qp , ASP
NCE& NORTH CABOINA STATE PLANE
MIR BO% METER BOK OWN! HALT
IMAMcGrill
0' 40' 80' 120'
The document originally Issued and sealed by J.
Dallas Gordon, PLS, NO L-4626 an August 23.
2DiB. TN. el..t.ic media snail not be
pconsidered a certified document. See the GRAPHIC SCALE 1"=40'
roject report for certificate and seal.
LAPSED END
Montreat
O
Aawd r D
CONTACT:
DIAN QLINZI
PHONE
828.5-45.-4551
Project
PO BO\ 969 NIONTR&\T NC 28757
Location
071&96-8414
PH) SICAL ADDRESS:
Si
Black
PROPERTY SIZE
Mountain
PRO ECT SIZE
EYIT 41
FRENCH BROAD
,-w
WITHIN ZONE AE &
Vicinity Map
PER FEMA PANEL
NOT IOYALi.
DEVELOPMENT DATA BLOCK
0\\NLIUDEVELOPER,
MOLNTAN KETREA,T ASSOCIATION
CONTACT:
DIAN QLINZI
PHONE
828.5-45.-4551
ADDRESS:
PO BO\ 969 NIONTR&\T NC 28757
PN:
071&96-8414
PH) SICAL ADDRESS:
407 KENTUCKY RD.
NIONTREAT, NC
PROPERTY SIZE
26.92 AC
PRO ECT SIZE
1.14 AC
RECEIVING WATERCOURSE:
- NAME:
FLAT CREEK
- INDEX:
6-78-6-(C)
- CLASS:
C
- BASIN:
FRENCH BROAD
RECEIVING WATERCOURSE:
- NAME:
PUNCHEON BRANCH
- INDEX:
6-78-6-6
- CLASS:
C
- BASIN:
FRENCH BROAD
PROJECT AREA
WITHIN ZONE AE &
AE (FLOODWAY)
PER FEMA PANEL
0710, MAP # 3710071000J, 1/6/2010
f
o
z
Sheet
C1

RELOCATE BOULDERS TO FORM SOUTH
STREAM BANK BETWEEN JERSEY
BARRIER & 'TREEHOUSE' HARDSCAPE.
SEE SHEET C3 FOR INSTALLATION
LOCATION. CONSULT ENGINEER PRIOR
TO RELOCATION.
-STEPS--
POPLAR 15"—
REMOVE RIVER STONE TO APPROX.
EDGE—OF—STREAM FROM 2000.
^� r STOCKPILE FOR USE AS BACKFILL
H = x UNDER COLLAPSED BOARDWALK.
r SEE SHEET C3.1 FOR EXCAVATION
Q6
e, : «-' s, DETAIL. ALL EXCAVATION WITHIN OR
a Y NEAR THE STREAM SHALL BE
\.-;` PERFORMED IN—THE—DRY.
i +
GRAPHIC
■ /
„
m _-- ..-
WOOD
EE OUSE—
£
LE 77" F
EXISTING BOULDERS
Q IMMEDIATELY DOWNSTREAM OF
JERSEY BARRIER TO REMAIN.
HEM�OCK 10"
JERSEY BARRIER
LOCATION BASED UPON
3/27/2000 DESIGN BY
MARY WEBER, LA. (TYP.)
.1xnl49.1•»r_a
LP
24'f OF BOARDWALK & ADJOINING BRIDGE,
INCLUDING ALL STRUCTURAL COMPONENTS, TO
BE REMOVED.
Sheet
C2

INSTALL RELOCATED BOULDERS BETWEEN
JERSEY BARRIER AND REMAINING STREAMBANK.
PLACE BOULDERS TO PROTECT 'TREEHOUSE'
HARDSCAPE FROM UNDERMINING.
0 O POS
/ POPLAR 15"
STEPS' / J
- - -,,,= ...,
17"
0' 10' 20' 30'
GRAPHIC SCALE 1 "=10'
BACKFILL JERSEY BARRIER & ADJACENT
AREA W/ STOCKPILED RIVER STONE.
r 14
2 1�
o c)°
o a
REP � r
DECK COLLAP E E +., w
� O
LP
S
FHEM OCK f0' \ \ ',/ ' 4
REPLACE BOARDWALK & BRIDGE.
MATCH EXISTING.
INSTALL BOULDERS & BACKFILL AT
SOUTH END OF JERSEY BARRIER.
a
0
.. E
o
U PQ
y
ow
CL
0
G
Sheet
C3

. z
0 Eoi
J-)
U
. . .......
t
BANKFULL ELEVATION TO BE SET BY
-w
PREVIOUS STREAM BANK TOPOGRAPHY.
<
NOTE:
CONSULT ENGINEER PRIOR TO
RELOCTING ANY BOULDERS IN
EXISTING STREAM BED LARGER
0
16'
THAT 18" IN DIAMETER.
0
BANKFULL WIDTH (AVG.)
>
0
u')
BANKFULL
C)
j/j ELEVATION
/\\\/\\�\\/\\,\/ EXISTING TREAM BED
/
LLA AREA
>
x v NAI-A
Hy,
m
ROPOSED STREAM ED
/I Y/
A
I/ I
VA//VA//VA//VA//VA//VA//VA//VA//VA//VA
HALT EXCAVATION AT
0
YY
/ /
(u u
DEEPEST POINT OF
EXISTING STREAM CHANNEL
U m
0
U
TYPICAL STREAM CROSS SECTION FOR FLAT CREEK
NOT TO SCAM
Sheet
ds
C3.1-

E
OAK
�ARDW00 I
i
/
-5TTEP-%-' J
r
i il- • - .
REMOVE EXISTING BRIDGE
AND ABUTMENTS. DEMOLISH
z7;; AND STOCKPILE ABUTMENT
STONE.
i
0' 10' 20' 30'
GRAPHIC SCALE 1 "=10'
o
W
U) n
sh«r
C4
ofz

et
NOTE:
NO WET MASONRY PRODUCT SHALL
ENTER THE STREAM.
0)
0
�b
U
Sheet
C5
I `� PO
STEPS/ / J
IE
OAK 24"
0
\
JiARDW00/ STO
/ J
UE
G.,
EXCAVATE TO UNDISTURBED SOIL
m
'"
BELOW SCOUR DEPTH FOR NEW WALL
FOUNDATIONS. WALL FOUNDATIONS TO
'
BE PRECAST AND WELL CURED.
—
REBUILD WALL AND CONSTRUCT NEW
!�
L
BRIDGE ABUTMENTS BEHIND WALL PER
ROCK. W
GEOTECHNICAL ENGINEER.
ALL EXCAVATION WITHIN OR NEAR THE
STREAM SHALL BE PERFORMED
IN—THE—DRY.
0' 10' 20'
30'
GRAPHIC SCALE 1 "=10'
et
NOTE:
NO WET MASONRY PRODUCT SHALL
ENTER THE STREAM.
0)
0
�b
U
Sheet
C5

I .ate i 1 1y�� �rl �4�:.ii••i;'-.;E.t�•.� .
- �•�• •'t� l Eq 3
_ ..a='`sE �.� � �n ` a'� ���.�•4•i:.��i"• � 43.,; s�-'�s -„=..sir t.�
_ PA.
^ \_
T4
r1ti ••�t'Ir ov111._•I /• /// '�'} `� r� ��11 ,.\
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.I III
�F � "�` `'iRv-�--> 3'�' s �7 %moi •iii
•

M®
REPLACE FOOTBRIDGE. CONSTRUCT NEW
BRIDGE ABUTMENT FOUNDATIONS PER
GEOTECHNICAL ENGINEER.
:-'Y':vs'
IR i
REPLACE FOOTBRIDGE. CONSTRUCT NEW
BRIDGE ABUTMENT FOUNDATIONS PER
GEOTECHNICAL ENGINEER. INSTALL SMALL
BOULDERS UNDER FOOTBRIDGE AT STREAM
EDGE FOR BANK STABILIZATION.
DOGWOOD'—
DOGWOOD"
ZLAR 10 DOUBLE"
HARDW00 4"
I.E.: 2618.00
8/,�NCH
0' 10' 20' 30'
GRAPHIC SCALE 1 "=10'
HARDWOOD 6"
BENCH /
SIGN 'SIGN_ _ LP
DOGWOOD 4"
/100 ,I^
HEMLOCK
STABILIZE STREAMBANK NEAR BRIDGE
INSTALL RELOCATED BOULDERS TO
CONNECT EXISTING BOULDER STREAM
BANKS. IMPORT BOULDER MATERIAL AS
NEEDED. RELOCATE STOCKPILED RIVER
STONE & SEDIMENT TO FILL
FOOTBRIDGE RECEIVING ZONE. MAY BE
eLMIXED WITH SUITABLE FILL MATERIAL.
IMPORT SUITABLE FILL MATERIAL AS
NEEDED.
Sheet
C/

am
..z
p
0
oil
U =�I
LZ
�•�/ and Y!�-�,.�`
INSTALL STACKED
1, XTFs' BOULDER WALL AND FILL
TO CREATE STREAM BANK.
VAjVAjVAjVAjVAjVAjVAj� w
x Lu
/AA%/AA%/AA jAA jAA jAA%/AA� (� z
ON %rGAxbeE �' FILL BEHIND BOULDER o Q)
�— / // // // // // / V/ WALL WITH STONE, GRAVEL, rS4 u
\\ \\ \\ AND WET MUD MIX.
ENSURE NO VOIDS REMAIN. ° o
POPLAR 12" SYC 0.,25 c6
/\\/ STACK IMPORTED
\\ JbBOULDERS o
HARD0 00 s„ VVVA' �� D AMETER TO FORM DECREASING IN
STREAM BANK FACE. FILL Q
VA VA VA �� ALL BOULDER VOIDS WITH
,SWINGS ////, as
WET MUD MIX.
VA VAA VAA VAA�V0 VARIOUS SIZES TO OF _
\ PREVENT SCOUR T BASE
\\\ \\\ \\\ \\\ OFBOULDERWALL.
MEAN STREAM ELEVATION o
GRAPHIC SCALE 1 "=10'\�
TYPICAL STREAM BANK REPAIR CROSS SECTION Sheet
NOT TO SCALE CQ

Q
•
Y ks � AF ..y
•
1 1 �
•� Gi �Y.a
f
•

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