20120548 Ver 1_As Built and Year 2 Monitoring Report_20150527

614 -. - unimin
May 20, 2015
Ms. Karen Higgins
NC Division of Water Resources
512 North Salisbury Street
Raleigh, NC 27604
RE: North Toe River Bank Stabilization
As -Built (2013) and Monitoring Year 2 (2015) Reports
Avery County, North Carolina
Corps Action ID 2012 - 00962; DWQ Project# 12 -0548
Ms. Higgins,
Schoolhouse Quartz Plant
107 Harris Mining Co. Rd
Spruce Pine, NC 28777
Phone: [phone]
Fax: [phone]
Please reference the 401 Water Quality Certification (Certification) issued by the NC Division of
Water Resources (DWR) on July 12, 2012 (Attachment A). The Certification authorizes 1,140
feet of stream impacts for the purposes of stream bank stabilization on the North Toe River in
Avery County, North Carolina. As part of the Certification approval, stream/structure stability
monitoring was required for a period of three years. Monitoring was to include an as -built
drawing, photo documentation, and a narrative of findings.
The attached 2013 As -Built (Attachment B), 2014 Monitoring Year 2 (Attachment C), and 2015
Monitoring Year 3(Attachment D) reports for the North Toe River Bank Stabilization project are
being submitted on behalf of the Unimin Corporation represented by myself.
Construction of eight structures was completed during May 2013. As -built photo documentation
was completed during 2013 followed by photo documentation during May 2014 and May 2015.
Results from the continued photo documentation efforts indicate that all eight structures
remain stable and are functioning as designed. Monitoring reports will continue to be submitted
annually until the completion of the three year monitoring period.
Please do not hesitate to contact me at 828 - 765 -4251 extension 313 if you have any questions or
comments.
Respectfully,
Angela Poston
Unimin Schoolhouse Quartz Plant
Plant Superintendent

Attachment A
DWR Water Quality Certification

A
G'A"
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue
Governor
July 12, 2012
Unimin Corporation
Andrew Bradley, Attn: Mike Vencill
107 Harris Mining Company Rd.
Spruce Pine, NC 28777
Charles Wakill P.E.
Director
Subject: 401 Water Quality Certification - Approval
North Toe River Bank Stabilization
DWQ Project # 12 -0548
Avery County
FrB / N.Toe / 7- 2- (27.7) / C; Tr
Dear Mr. Bradley:
Dee Freeman
Secretary
The Division of Water Quality (DWQ) has completed the review of your 401 Water Quality Certification
application associated with the subject project listed above.
Approval has been granted to place fill within or otherwise impact 1140 feet of streams for the purpose of bank
stabilization at the subject property. This approval requires you to follow the conditions listed in the
attached Certification and any additional conditions listed below.
Project impacts are covered by General Water Quality Certification Number 3885. This Certification allows
you to use Nationwide Permit 27 when issued by the US Army Corps of Engineers ( USACE). Authorization to
proceed with your proposed impacts or to conduct impacts to waters as depicted in your application and as
authorized by this Certification shall expire upon expiration of the corresponding USACE Permit Verification.
In addition, you should obtain or otherwise comply with any other required federal, state or local permits before
you proceed with your project including (but not limited to) Erosion and Sediment Control and Trout Buffer
regulations.
This approval is for the purpose and design that you described in your application. If you change your project,
you must notify us and may be required to submit a new application.
Impacts Approved
The following impacts are hereby approved as long as all of the other specific and general conditions of
this Certification are met. No other impacts are approved including incidental impacts:
Location. 2090 U.S. Highway 70, Swannanoa, North Carolina 28778
Phone: 828 - 29845001 FAX: [phone]
Internet www.ncwaterquality.org
An Equal Opportunity 1 Affirm alive Action Employer
NorthCarolina
Naturally
Amount Approved (Units)
Plan Location or Reference
Stream
1 1140 (feet)
S1 -S4 application
Location. 2090 U.S. Highway 70, Swannanoa, North Carolina 28778
Phone: 828 - 29845001 FAX: [phone]
Internet www.ncwaterquality.org
An Equal Opportunity 1 Affirm alive Action Employer
NorthCarolina
Naturally

Unimin -N. Toe Bank Stabilization
July 12, 2012
Page 2 of 2
Conditions
Stream/Structure Stability Monitoring
Upon completion of construction activities the structures shall be surveyed, as -built drawings developed
along with photo documentation of the project; all shall be submitted to DWQ. Also included in the as-
built submittal, with photo documentation, shall be the location and restoration technique of the access
areas and the ford. Annually for three years this project shall be monitored. An annual report shall be
submitted to the DWQ including a narrative of findings, surveys, repairs needed, and photographic
documentation of conditions at the structures and access areas. The as -built submittal shall be submitted
within 30 days of the completion of the project, then for three years thereafter the annual reports shall be
submitted. Submit the as -built submittal and annual reports to Division of Water Quality, 2090 US
HWY 70, Swannanoa, NC 28778.
The Division of Water Quality, Asheville Regional Office, requires contact be made approximately two
weeks prior to beginning construction activities. All comments submitted in the NC Wildlife Resources
Commission letter dated July 3, 2012 are hereby incorporated into this approval.
Violations of any condition herein set forth may result in revocation of this Certification and may result in
criminal and/or civil penalties.
If you do not accept any of the conditions of this Certification (associated with the approved wetland or stream
impacts), you may ask for an adjudicatory hearing. You must act within 60 days of the date that you receive
this letter. To ask for a hearing, send a written petition, which conforms to Chapter 150B of the North Carolina
General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-
6714. This certification and its conditions are final and binding unless you ask for a hearing.
This letter completes the review of your application by the Division of Water Quality under Section 401 of the
Clean Water Act. If you have any questions, please contact Linda Wiggs in the Asheville Regional Office at
828 - 296 -4500.
Sincerely,
Charles Wakild, P.E., Director
CW11SW
Enc: GC3885
Certificate of Completion
cc: USACE Asheville Regulatory Field Office
WeBSCaPe Unit — Central Office
File Copy
Wildlife Resources Commission -Dave Me Henry
Clear Water (e -copy)
S:1SWP1AveryM1s \Non- D0T\Nor[h Toe River Bank Stabiliza tonlNToeRvr.Approva],July 20l2.doc

Attachment B
As Built 2013 Drawings Representative Photographs

Photo 1. Work Area 1. Upstream Cross Vane.
Photo 2. Work Area 1. Downstream Vane.
Appendix B Representative Photographs

Photo 3. Work Area 2. Upstream Vane.
Photo 4. Work Area 2. Middle Vane.
Appendix B Representative Photographs

Photo 5. Work Area 2. Downstream Vane.
Photo Unavailable
Photo 6. Work Area 3 Upstream Vane.
Appendix B Representative Photographs

Photo 7. Work Area 3. Middle Vane.
!lYlYiiiiif �
Photo 8. Work Area 3. Downstream Vane.
Appendix B Representative Photographs

Attachment C
Monitoring Year 2 (2014) Representative Photographs

Photo 1. Work Area 1. Upstream Cross Vane. 5/5/2014
Photo 2. Work Area 1. Downstream Vane. 5/5/2014
Appendix C Representative Photographs

Photo 3. Work Area 2. Upstream Vane. 5/5/2014
Photo 4. Work Area 2. Middle Vane. 5/5/2014
Appendix C Representative Photographs

Photo 5. Work Area 2. Downstream Vane. 5/5/2014
Photo 6. Work Area 3 Upstream Vane. 5/5/2014
Appendix C Representative Photographs

Photo 7. Work Areal Middle Vane. 5/5/2014
Photo 8. Work Area 3. Downstream Vane. 5/5/2014
Appendix C Representative Photographs

Attachment D
Monitoring Year 2 (2015) Representative Photographs

Photo 1. Work Area 1. Upstream Cross Vane. 4/24/15
Photo 2. Work Area 1. Downstream Vane. 4/24/15
Appendix B Representative Photographs

Photo 3. Work Area 2. Upstream Vane. 4/24/15
Photo 4. Work Area 2. Middle Vane. 4/24/15
Appendix B Representative Photographs

Photo 5. Work Area 2. Downstream Vane. 4/24/15
Photo 6. Work Area 3. Upstream Vane. 4/24/15
Appendix B Representative Photographs

Photo 7. Work Area 3. Middle Vane. 4/24/15
Photo 8. Work Area 3. Downstream Vane. 4/24/15
Appendix B Representative Photographs

INDEX OF SHEETS
P1: TITLE
P2: PLAN
P3: WORK AREA PLANS
D4 -D5: DETAILS
GRAPHIC SCALE
LESS NOTED OTHE
200® 0
UNIMIN CORPORATION
NORTH TOE RIVER STABILIZA TION
LOCATION: AVERY COUNTY, NC
PROJECT ENGINEER
TO THE BEST OF MY KNOWLEDGE, THE
PROJECT WAS CONSTRUCTED AS DESIGNED.
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VICINITY MAP
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Prepared Bv:
CONFLUENCE
ENGINEERING, PC
16 Broad Svicer
AeheV e, North CaroNra 28801
Phone: [phone]
con8uen ngmm
PROJECTED START DATE:
DESIGN
COMPLETION DATE:
APPROVAL
SITE LOCATION

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OVER BIAXIAL G EOGRID WORK AREA 2 ��' -- o -0 c
CONSTRUCTION`� <_,- �'` o °
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ACCESS VIA " _ POND m Z
EXISTING FARM PATH - - -- = OUTLET r Z
DATE: AUGUST 2013
200'
AS -BUILT
20U 400' 600' - '�+ PLAN
b— - 1.�,_,�.,, SHEET P2 OF 5

0
1 �\ , 160' TYP.
130' _ ► - - - - - --
CONST.', pq
ACCESS CONSTRUCTION rFcr
ACCESS F�F Fk,�
�\\ \ T,9T/ � �IVG
REMOVE BAR
SHIFT RIGHT TOE q�ti
STREAM WORK AREA 1 PLAN; 1" =100' STREAM WORK AREA 2 PLAN; 1" = 100'
`\ 3
NOTES: MINIMIZE" �Oyi \ `°
DISTURBANCE TO
BUFFER VEGETATION
WHEN MAKING ACCESS " \ NP•
POINTS. USE TIMBER\
MATS TO FORM RAMP
TO RIVER. RESTORE CONSTRUCTION
DISTURBED AREAS PER
S &EC DETAILS. ACCESS
T
ro�ti'N� PROTECT POND OUTLET
STREAM WORK AREA 3 PLAN; 1 " = 100'

NOTE a a
-A 1. STA9I-IZE DISTURBED N :2 w
O
O� o BANK AREAS WITH SEES, � 0 0 o U)
FLOW OT 0 MJLGH AND MATTING LVE Z
m STAKE SAME AREAS DURING 0 O
DORMANT SEASON. J Z
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2. USE 80' VANE LENCTH mw m v Of
2` FOR Y,'DRK AREA 2; 70' 2" � 7. ¢ rn w
r 2 LENGTH FOR WORK AREA= 1 a m
9 AND 3 a m "
' R I�
- -20
FOOTER - ; - - ''` INVERT BOULDERS FLUSH
BOULDER WITH BASEFLOW W.S.
BACKFILL WITH ON -SITE
GRAVEL AND COBBLE c i
VARIES 70' TOGO' 9 _, '-- FOOTER
o �p
0 -
6'X4'X3' HEADER � '. ; BOULDER � ' .\ I '••, m....
BOULDER 1 WX4'XVHEADER -
SEE NOTE 1 BOULDER I SEE NOTE Lu
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SEE NOTE I r. ; I,[ 2 b l pi Z = p B
L
PLAN , PLAN
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BOULDER VANE /'2__ BOULDER CROSS VANE U
D4 NTS D4 NTS
HEADER BOULDER -
EXISTING BED VARIES 4.9' TO 5.6' FILTER FABRIC
TOP OF BANK r
Ir-i f- 2'MIN.
BACKFILL W/ ON-SITE -2' MIN.
16 SLOPE GRAVEL AND COBBLE - L_R-
-I
- -. 8'MIN. = --
FOOTER BOULDER - FOOTER BOULDER
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PROFILE A-A' SECTION B-B'
DATE:AUGUST 2013
SCAL& NTS
MATTING AND
S &EC DETAILS
SHEET D4 OF 5

TOP OF BANK
I` 1' MIN. —MATTING PLACED FLUSH WITH BANK SURFACE, LAP
OVER DOWNSTREAM I DOWN SLOPE SEAMS
12" WOOD STAKE PLACED IN
T O.C. DIAMOND PATTERN
— MATTING ANCHORED 1'
BELOW STREAM BED
}' I
SMOOTH SURFACE, REMOVE e'���_I
ALL DEBRIS AND SEEDIMULCH / q
BEFORE PLACING MATTING I
NOTES: SECTION
1. MATTING SHALL BE COIR FIBER, 780 GRAMSISO.
METER WITH NOMINAL 0.50 INCH OPENING SIZE.
2. APPLY WHEAT OR OAT STRAW MULCH AT 100
LB11,000 SF TO SEEDED AREAS.
EROSION CONTROL MATTING
\,_?V NTS
PERMANENT SEED MIX'
° APPLIED AT 0.5 LBM.000 SF TO ALL DISTURBED AREAS
Common Name
Scientific Name
Percentage
Swltchgrass
Panlcum Argatum
30
Virginia Wild Rye
Eymus virginbA
30
Deer Tongue
Panlcum clandestinum
15
Golden Tickseed
Coreopsis tlnctoria
5
Showy Tickseed
Bklensarktosa
5
Ironweed
Vemonla gigentsa
5
Fox Sedge
Carex vulpinddea
10
TOTAL
100
TEMPORARY SEED MIX
(APPLIED WITH PERMANENT MIX
Application Dates Common Name Rate (1110,000 sf)
August 15 to May 1 Rye Grain 1.0
May 1 to August 15 Browntop Millet 0.3
—MIN. 2 NODES ABOVE GRADE TOP CUT AT 15°
�.
WIN DIAMOND PATTERN
J ' / HARD SOIL OR STONE MAY
BE PRESENT SEE NOTE 1
T TO FIRST ROW BUDS POINTED
UPWARD
BASEFLOW W.S.
Y TO 4'
\ f i III
LIVE STAKE `\% 1/2' TO 2"
2' MIN. -'
SECTION
—BASE CUT
NOTES: AT 45 DEG.
1, FORM PILOT HOLE THROUGH HARD SOIL OR STONE TO
PREVENT DAMAGE TO STAKE.
2. LIVE STAKE MIX TO INCLUDE AT LEAST TWO OF THE LIVE STAKE DETAIL
FOLLOWING SPECIES: SILKY DOGWOOD, SILKY WILLOW,
ELDERBERRY,BUTTONBUSH.
2 LIVE STAKING
\ DS NTS
STEELT -POST
SILT FENCE FABRIC --
S'MAX COMPACTED FILL -!
STEEL T -POST FLOW —_ _ CREEK SIDE
18' MIN.
24' MIN.
— 4'
FILTER FABRIC
PROFILE SECTION
NOTES:
1. SILT FENCE SHALL BE PLACED ON RIVER
SIDE OF ALL STOCKPILES.
2. SILT FENCE SHALL BE REMOVED UPON
COMPLETION OF EARTHWORK. 3 SILT FENCE
D5 NTS
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I DATEAUGUST 2D13
MATTING AND
S &EC DETAILS
SHEET D5 OF 5