20181589 Ver 1_1001 Permit Modification Letter SAW-2018-02171_20190611

CLearWater
ClearWater Environmental Consultants, Inc.
June 10, 2019 www.cwenvcorn
Ms. Amanda Jones Ms. Karen Higgins
US Army Corps of Engineers NC Division of Water Resources
Asheville Regulatory Field Office 401 Permitting & Buffer Unit
151 Patton Avenue, Room 208 512 N. Salisbury Street, 9' Floor
Asheville, North Carolina 28801-2638 Raleigh, North Carolina 27604
RE: Biltmore French Broad River and Swannanoa River Bank Stabilization
Nationwide Permit 13 Permit Modification Request
Water Quality Certification 4134
Buncombe County, North Carolina
Dear Ms. Jones and Ms. Higgins,
The attached Pre -Construction Notification (PCN) modification is being submitted on behalf of
The Biltmore Company represented by Mr. Parker Andes. The project site is a +/- 2,485 acre
parcel with a physical address of 1 Lodge Street, Asheville, North Carolina (35.56685, -
82.546343). The applicant was issued a Nationwide Permit 13 on May 17, 2019 for bank
stabilization in four locations on the French Broad river and three locations on the Swannanoa
River to prevent loss of property and for an emergency portage location for recreational water
craft on the French Broad River. Approval of a 401 Water Quality Certification (GC 4134) was
issued on February 8, 2019. It will be necessary to cross the Swannanoa River in order to access
one of the permitted bank stabilization sites (Impact S9). The applicant is requesting a
modification to the permit to include a new impact consisting of 30' of temporary stream bank
impacts and construction access (Impact S11) for the addition of a new access point from the
right bank of the Swannanoa River. A revised plan sheet indicating the location of the proposed
stream crossing is included in Attachment A (Sheet 8 of 12).
Copies of this package have been sent to Zan Price of the Division of Water Resources Asheville
Regional Office, Ms. Andrea Leslie of the NC Wildlife Resources Commission and Mr. Byron
Hamstead of the US Fish and Wildlife Service.
Please do not hesitate to contact me at 828-698-9800 if you have any questions or comments.
Sincerely,
M6&t�z)
Alea Tuttle, P.W.S.
Biologist
Copy Furnished:
NC Division of Water Resources — Zan Price
NC Wildlife Resources Commission — Andrea Leslie
US Fish and Wildlife Resource Commission — Byron Hamstead
32 Clayton Street
Asheville, NC 28801
828-698-9800 Tel
R. Clement Riddle, P.W.S
Principal

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REMOVE STUMP BUT
PROTECT ALL OTHER TREES
r - INSTALL SAFETY FENCE
AROUND WORKAREA-
LANE CLOSURE
r
r
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" ACCESS ACROSS THE RIVER BED IS NEEDED IN
ORDER FOR EQUIPMENT TO REACH THE BASE
OF THE NEAR -VERTICAL LEFT BANK.
MATERIALS WILL BE DELIVERED FROM WINERY
ROAD ON THE LEFT BANK IN ORDER TO LIMIT
DISTURBANCE TO THE RIVER BED. UPON
COMPLETION OF IN -STREAM WORK, THE RIGHT
BANK WILL BE RESTORED TO IT'S PRE -PROJECT
GRADES AND DISTURBED SOILS WILL BE
�. SEEDED AND COVERED WITH EROSION
CONTROL MATTING IN ACCORDANCE WITH THE
DETAILS ON SHEETS 11 AND 12.
G
Sl 1 (30 LF) ACCESS FROM n
RIGHT BANK 0
ACROSS RIVER
SWANNANOA R►VER �)
7 COURSES GEOLIFTS
Impact S9 (60 LF)
LEGEND
GEOLIFTS 0 60' 120' 180'
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DATE: JUNE 2019
SCALE: AS SHOWN
PLAN
SWANNANOA
SHEET 8 OF 12

6" DIVERSION BERM
AT TOP OF BANK
1.75" --� �-
1"
1 541 TOP OF BANK
BRUSH MATTRESS STAKE 1' MIN.
NATURAL FIBER TWINE -7 -� T TYP
TOP OF MA
T TYP
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A U����1'�I11�.�,CRISS-CROSS
PATTERN, YARD
BOULDER TOE' PLAN
NOTES:
1. PLACE CUTTINGS ON FACE OF GRADED BANK, WITH BUTT ENDS REACHING
TO BASE FLOW WATER SURFACE.
2. DRIVE STAKES HALFWAY INTO BANK BETWEEN CUTTINGS. WRAP TWINE
AROUND STAKES AND OVER CUTTINGS TIGHTLY. DRIVE STAKES FURTHER
TO TIGHTEN TWINE AND SECURE CUTTINGS TO SLOPE.
3. FILL VOIDS BETWEEN CUTTINGS WITH LOOSE TOPSOIL. SEED AND MULCH
THE SURFACE.
4. INSTALL EROSION CONTROL MATTING OVER TOPSOIL, USING 18" LONG
MATTING STAKES.
5. PLACE BOULDER TOE OVER END OF MATTRESS AND MATTING.
6. LIVE CUTTINGS SHALL BE DORMANT AT THE TIME OF INSTALLATION AND
SHALL INCLUDE AT LEAST 3 OF THE FOLLOWING SPECIES: SILKY WILLOW,
SIKLY DOGWOOD, NINEBARK, ELDERBERRY, BLACK WILLOW.
1 BRUSH MATTRESS
10 NTS
REMOVE ALL DEBRIS;
SCARIFY SURFACE, PLACE
TOPSOILAND SEED/MULCH
BEFORE PLACING MATTING
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12" WOOD STAKE PLACED IN a m
r 34 O.C. DIAMOND PATTERN
LIVE STAKE, T O.C.
STREAM BED
SECTION
NOTES:
1. MATTING SHALL BE COIR FIBER, 780 GIM2 WITH
NOMINAL 0.50 INCH OPENING SIZE.
2. SEE SHEET 11 FOR SEED MIXES.
3. LIVE STAKES SHALL BE DORMANT AT TIME OF
INSTALLATION. SPECIES SHALL INCLUDE AT
LEAST 3 OF THE FOLLOWING: SILKY DOGWOOD,
SILKY WILLOW, NINEBARK, ELDERBERRY, BLACK
WILLOW
1 14
0.6,1
WOOD STAKE
TOP CUT AT 150
AFTER INSTALL
BUDS POINTED
UPWARD, MIN. 3 BUDS
ABOVE AND BELOW
GRADE AFTER INSTALL
24" MIN.
11211 TO 211
BASE CUT
AT 45°
LIVE STAKE DETAIL
EROSION CONTROL MATTING/LIVE STAKES
NTS
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DATE: OCT. 2018
SCALE: AS SHOWN
DETAILS
SHEET 10 OF 11

ROAD/DRIVEWAY
ROAD/DRIVEWAY
I uld
12' MIN.
STEEL T -POST —
FILTER FABRIC
WITH WIRE BACKING —
COMPACTED BACKFILL
RUNOFF —
I
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8"
4"
f
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I 50' MIN.
I
1 CONSTRUCTION ENTRANCE/EXIT
1 NTS
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NOTES:
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1. CONSTRUCTION ENTRANCE TO BE USED AT a j
9" MIN. THICKNESS LOCATIONS WHERE OFF-ROAD TRUCKS AND
CLASS A STONE EQUIPMENT LEAVE DISTURBED AREAS AND Cnv
ENTER PAVED ROADS. W
2. LOCATIONS TO BE DETERMINED DURING
¢ m
CONSTRUCTION.
4
CREEK
SIDE
24" MIN.
SECTION
NOTES:
1. SILT FENCE SHALL BE PLACED ON STREAM
SIDE OF ALL STOCKPILES.
2. SILT FENCE SHALL BE REMOVED UPON
COMPLETION OF EARTHWORK.
PROFILE WIRE BACKING
2 SILT FENCE
11 NTS
WITH
Permanent Seed Mix * - 30 Iblacre
Mulching: wheat or oat straw mulch applied at 1 bale/1,000 square feet
Common Name
Scientific Name
Percentage
Deer Tongue
Panicum clandestinum
20
Big Biuestem
Andropogon gerardii
20
Virginia Wildrye
Elymus virginicus
20
Indiangrass
Sorghastrum nutans
20
Switchgrass
Panicum virgatum
20
* USE TURF TYPE TALL FESCUE BLEND TO SEED DISTURBED
AREAS IN LAWNS BEYOND STREAM GRADING LIMITS.
Temporary Seed Mix
Application Dates
Common Name
c Name
Scientific
Rate (lb/acre)
Applied
(lb/acre) Applied
Separately
wt Permanent Mix
August 15 to May 1
Rye Grain
Secale cereals
120
60
May 1 to August 15
Browntop Millet
Panicum ramosum
40
20
3 SEED MIXES
11
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DATE: OCT. 2018
SCALE: AS SHOWN
DETAILS
SHEET 11 OF 11