20141129 Ver 1_More Info Received_20150408

US Army Corps of Engineers
Asheville Regulatory Field Office
Attn: Mrs. Tasha Alexander
151 Patton Ave, Room 208
Asheville, North Carolina 28801 -5006
April 8, 2015
NC Division of Water Resources,
401 and Buffer Permitting Unit
Attn: Mrs. Jennifer Burdette /Mr. Zan Price
1617 Mail Service Center
Raleigh, North Carolina 27699 -1617
Re: Creekside Village — Residential Development
Nationwide 29 Permit Application Request — Second Additional Information
Corps Action ID: 2014 -01670 / DWR Project #:14 -1129
Weaverville, Buncombe County, North Carolina
Tasha /Jennifer /Zan:
This letter and the attached document and figures are in response to the additional information
request dated March 19, 2015 from DWR. A plan and typical detail for the proposed French drain
system that will be constructed at Impacts # 1, 2, 3, and 4 are included for your review. A plan
and typical detail for the proposed sewer crossing on the unnamed tributary to Reems Creek below
the existing pond are included for your review. A detail for the flared pond outlet is included for
your review. Civil Design Concepts, PA is currently coordinating with Buncombe County to get the
Stormwater Management Plan revised and approved. A copy of the approval from Buncombe
County will be submitted to your offices once it is received.
Atlas requests that the Corps 404 nationwide permit be issued once the enclosed documentation
has been reviewed. Atlas requests that the DWR 401 water quality certification be issued
conditionally, to include that the approved Stormwater Management Plan shall be submitted to DWR
before any impacts authorized by the 401 occur, once the enclosed documentation has been
reviewed. Please contact me with questions concerning this package.
Best regards,
�" U d/
Jennifer L Robertson, President
Copies To:
Mr. Zan Price — NC DWR Swannanoa Office (digital copy)
Mrs. Andrea Leslie — NC WRC Swannanoa Office (digital copy)
Mr. David Earley — Sundog Development Company, LLC (digital copy)
Mr. Mike Anderson — Civil Design Concepts (digital copy)
ATLAS ENVIRONMENTAL, INC.
775 Haywood Road, Suite D; Asheville, North Carolina 28806
828- 712 -9205 (m) / 980 - 819 -7780 (o) / 980 - 819 -7876 (f)
www.atlasenvi.com

From Zan Price (NC DWR) — Additional Information Request Letter (March 19, 2015)
Item 1
Please provide a detail and updated plan sheet for the proposed permanent stream impact
(impact number S1). According to the submitted plans, the inlet of this pipe will be buried under
several feet of fill. Please demonstrate how the existing baseflow will enter the proposed culvert
pipe.
Response
Enclosed are a plan for the proposed French drain to direct existing base flows from the stream
and wetlands into the proposed culvert and a detail for the French drain. The project
contractor will coordinate with a geotechnical engineer to determine the necessary depth of
the French drain. The French drain will consist of an 8" perforated drain pipe with No. 57
washed stone aggregate surrounding the drain pipe. The pipe and stone will be wrapped with
4" non -woven geotextile filter fabric and will be overlapped at least one foot.
Item 2
Please provide a detail for the proposed sewer crossing temporary stream impact (impact
number S2). Include the proposed riparian vegetation plan for the impacted area.
Response
Enclosed are a plan for the proposed sewer line crossing and a stream restoration detail. The
stream bed will be temporary trenched in order to install the sewer line below the stream bed.
Native materials will be used to re- establish the stream bed once installation is complete. The
stream bed will be graded to the original contours. Filter fabric and rip -rap will be used to
stabilize the stream banks. Excelsior will be used above the rip -rap, extended two feet beyond
the top of bank, and buried twelve inches. The disturbance area will be seeded will native
grasses.
Item 3
The submitted plans show a new outlet pipe with outlet protection for the pond that will
remain. Please explain if the re- constructed dam, new outlet pipe, and associated outlet
protection will impact any additional length of stream compared to the existing condition.
Please provide a detail for the pipe outlet protection.
Response
Enclosed is a plan for the pond outlet pipe which will consist of a flared end section and rip -rap
apron. The rip -rap apron will provide for outlet protection. The ending width of the apron will
be equal to the width of the receiving stream. Filter fabric or a filter blanket will be installed
between the rip -rap and the soil foundation. The rip -rap apron will extend up the stream bank
at least six inches to ensure stability. The re- constructed dam, new outlet pipe, and rip -rap will
not result in any additional stream impact from the existing condition.

Item 4
Please provide documentation of Buncombe County's approval of the updated stormwater
management plan (SMP) for this project by providing EITHER:
• A valid approval letter and one copy of the approved SMP (including plans and
calculations), or
• One set of stormwater plan details and calculations stamped as "Approved" by
Buncombe County.
Response
Civil Design Concepts, PA is coordinating with Buncombe County in order to revise the
stormwater management plan (SMP) and obtain approval of the SMP. Atlas is requesting that
DWR issue the 401 water quality certification conditionally to include that the approved SMP
shall be submitted to DWR before any impacts authorized by the 401 occur. A valid approval
letter and one copy of the approved SMP with plans and calculations OR one set of the SMP
details and calculations stamped as "Approved" by Buncombe County shall be submitted to Mr.
Zan Price once received.

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PROPOSED CULVERT
\ \ PROPOSED FRENCH DRAIN \ \ \ \ \ \ \ \
\ \ TO DIRECT EXISTING BASE \ x'06
\ FLOWS INTO PROPOSED \ o I \ \
\ \
\ \ CULVERT. CONTRACTOR SHALL
\ COORDINATE WITH GEOTECHNICAL \ \ \ \ \ I I I 1
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PRELIMINARY 0 15 30 60
NOT RELEASED
FOR
CONSTRUCTION
1 inch = 30 ft.
PROPOSED FRENCH DRAIN BULLETIN FOR:
2005WANNANOA RIVER ROAD
ASHEVILLE, NC 28805
PHONE [phone]
FAX [phone]
GREEKSIDE VILLAGE
EU
52 WAAYNESILLE, NC 28 6
NC
WAYNENE
C
-"85
CIVIL DESIGN CONCEPTS, PA PHONE (82 ,
FA%(828(456 -5455
CDC PROJECT #11400 MARCH 2015
NCSELS LICENSE M C -2184
www. civildesignconcepts.com

WRAP WASHED STONE WITH
FILTER FABRIC AND OVERLAP
FINISHED GRADE MIN. 1' -0"
III = III= "IT!II_III� �I� jll-'I III III =1
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=_
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II111111 �II � I � ITI �I III X11=
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11= 111_11111 II II �I -III NOTE:
PIPE SHALL BE TOWARDS
30" MIN. 111 �11I11�111 11111 �jIIII�III=
OUTLET AS INDICATOED ON
11_1
l l l_IIII11111 1111 � 11_111 �
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1 =III= 1 -�11 -III
=11 _ III Ill_II --
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-III_ II -III_ COMPACTED EARTH FILL
-III III
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4" NON -WOVEN
GEOTEXTILE FILTER FABRIC
NOTE:
REFER TO GEOTECHNICAL
REPORT FOR MORE INFORMATION 24
FRENCH DRAIN
NOT TO SCALE
FRENCH DRAIN DETAIL FOR:
200 SWANNANOA RIVER ROAD
ASHEVILLE, NC 28805
00
PHONE [phone]
FAXREET2525365
CREEKSIDE VILLAGE
52WAAYNESTREE, NC 2886
NC 28186
ca G
WAYNENEI:22
,
PHONE [phone]
CIVIL DESIGN CONCEPTS, PA FAX [phone]
CDC PROJECT #11400 MARCH 2015
NCBELS LICENSE#: C -2184
www.civiltlesignconcepts . com

IN
2040—
—
PROPOSED GRADE /
�5
SpR
8�
PROPOSED RETAINING WALL
(TYP)
/
203
— /
EXISTING GRADE
/ Lo
/ x�
PROPOSED MSD STREAMBANK
rn
PROTECTION (SEE DETAIL)
/ a; °N°
/ to N ON
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202
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Q d W I Z Z
lb
fD
(D
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201
PROPOSED 20'x16 "x0.25"
CONCRETE SEWER PIPE ENCASEMENT
(TYP)
= 2 �
g � I
2000-- _ m
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N H
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1990-
0+00
1 +00
2 +00
SEWER PROFILE
PROPOSED
SEWER LINE SCALE
PROPOSED UNNAMED TRIBUTARY
(TYP)
TO REEMS CREEK
1 " =30' HORIZONTAL
"x0.25"
1 " =6' VERTICAL
PROPOSED MANHOLE
PROPOSED 20'x1 6
LOCATION (TYP)
CONCRETE SEWER PIPE ENCASEMENT
(TYP)
\
\ \
\ \ \ \
\ \ \ f
LOCATION OF EXISTING
\ \ \ \
PIPE OUTLET
\\
\\
\
\ o
\ \ \
\ `L
PROPOSED RIP RAP
APRON
A
\ \ PROPOSED
LENTGH:
WIDTH AT FES:
18'
30
V
\ \
\ \
\ STREAM
\ co \ 0 \ CROSSING
5
WIDTH AT END:
THICKNESS:
8'
18"
\ \ \
STONE CLASS:
1
PROPOSED PRELIMINARY
0 15 30
60
RETAINING NOT RELEASED
WALL FOR
CONSTRUCTION
1 inch = 30 ft.
FUTURE SEWER STREAM CROSSING
& RIP RAP APRON BULLETIN FOR:
200 SWANNANOA RIVER ROAD
ASHEVILLE, NC 28805
PHONE [phone]
FAX [phone]
G RE E KS I D E VILLAGE
C
EET
52WAAYNES ILLE,NC28 86
NC
WAYNENE
CIVIL DESIGN CONCEPTS, PA
(82 ,
PHONE -4410
FAX [phone]
CDC PROJECT #11400
MARCH 2015
NCBELS LICENSEM C -2184
www.eivildesignconcepts.com

NOTE: ALL STREAMBANK RESTORATION AND
STABILIZATION SHALL RESULT IN A FINISH
GRADE TO ORIGINAL CONTOURS, UNLESS
SPECIFIED OR DIRECTED OTHERWISE
BY THE ENGINEER IN WRITING INSTALL ANCHORS IN
ACCORDANCE WITH
MANUFACTURERS
RECOMMENDATIONS
PLACE EXCELSIOR
ABOVE RIP -RAP
PLACE CLASS I RIP -RAP TO EXTEND TWO FEET
VERTICAL DISTANCE ABOVE BEYOND TOP OF BANK
STREAMBED AS SPECIFIED ON TOE IN 12 INCHES
THE DRAWINGS
EXIST. GRADE
ti tidy 12„
BACKFILL rtif
STREAMBED 12"
WITH NATIVE r
MATERIALS
- - — 18"
MIN.
FILTER FABRIC
" 4 OVERLAP 6"
MINIMUM
CONCRETE ENCASEMENT
AS SPECIFIED
STREAMBANK RESTORATION DETAIL
NOT TO SCALE
STANDARD DETAIL
Metropolitan Sewerage District
of
Buncombe County, North Corclino
STREAMBANK PROTECTION III
APPROVED: FEBRUARY 25, 2010 1.18 -03
FUTURE SEWER STREAM CROSSING FOR:
200 SWANNANOA RIVER ROAD
ASHEVILLE, NC 28805
PHONE [phone]
FAXREET-52 -5385
CREEKSIDE VILLAGE
52WAAYNESTREE, NC 2866
NC 28]88
C
WAYNENEI:22
,
PHONE [phone]
CIVIL DESIGN CONCEPTS, PA FAX
CDC PROJECT #11400 MARCH 2015
NCBELS LICENSE #' C -2184
www.civiltlesignconcepts . com

PIPE OUTLET TO FLAT AREA PIPE OUTLET TO
WELL— DEFINED CHANNEL
NO WELL— DEFINED CHANNEL
INCOMING PIPE
A A A A
3d do
w= do +(0.4 x La)
1
1
PLAN
FLARED END SECTION
PLAN
MATERIAL TO MATCH
MATERIAL OF INCOMING PIPE
PLAN
I
f La i
d
FILTER
BLANKET
SECTION AA FILTER
BLANKET SECTION AA
NOTES:
1. La IS THE LENGTH OF THE RIP RAP APRON.
2. d — 1.5 TIMES THE MAXIMUM STONE DIAMETER BUT NOT LESS THAN 6" (MINIMUM IS
24" DEEP IF STONE IS CLASS II)
ELEVATION
3. IN A WELL— DEFINED CHANNEL, EXTEND THE APRON UP THE CHANNEL BANKS TO AN
ELEVATION OF 6" ABOVE THE MAXIMUM TAILWATER DEPTH OR TO THE TOP OF THE
NOTES:
BANK, WHICHEVER IS LESS.
4. A FILTER BLANKET OR FILTER FABRIC SHOULD BE INSTALLED BETWEEN THE RIP RAP
1. THE DIMENSION OF THE THE FLARED END
AND SOIL FOUNDATION.
SECTION SHALL BE PER MANUFACTURER'S
5. COMPACT ANY REQUIRED FILL TO DENSITY OF SURROUNDING UNDISTURBED MATERIAL.
SPECIFICATIONS.
6. RIP RAP MAY BE FIELDSTONE OR ROUGH QUARRY STONE AND SHALL BE HARD.
2. THE SKIRT SECTION OF THE FLARED END
ANGULAR AND WELL— GRADED.
SECTION SHOULD BE JOINED TO THE INCOMING
7. CONSTRUCT APRON AT ZERO GRADE. TOP OF RIP RAP SHALL BE LEVEL WITH THE
PIPE PER MANUFACTURER'S SPECIFICATIONS.
RECEIVING CHANNEL OR SLIGHTLY LOWER.
8. ALIGN APRON WITH RECEIVING CHANNEL OR STREAM. ASSURE APRON IS STRAIGHT
THROUGHOUT ITS LENGTH.
9. END WIDTH OF APRON TO BE EQUAL TO WIDTH OF RECEIVING CHANNEL.
FLARED END SECTION WITH
RIP -RAP APRON
NOT TO SCALE
FLARED END SECTION DETAIL FOR:
200 SWANNANOA RIVER ROAD
ASHEVILLE, NO 28805
PHONE [phone]
FA%8252 -5385
C R E E KS I D E VILLAGE
5WALNOTSTREET- SLIITE9
WAYNESVILLE, NO 28]86
CC(C
PHONE [phone]
CIVIL DESIGN CONCEPTS, PA FAX[phone]
NCBELS LICENSE N: C -2184
www.civiltlesignconcepts.com
CDC PROJECT #11400 MARCH
2015