20090940 Ver 1_Certification of Completion_20130401

O/LWSP •SELLS
TO:
128 Overhill Drive, Suite 105
Mooresville, NC 28117
T: 704.662.0100
F: 704.662.0101
www.wsosells.com
Wetlands, Buffer, Stormwater — Compliance and
Permitting (Webscape) Unit
1650 Mail Service Center
Raleigh, NC 27699 -1650
919- 807 -6300
LETTER OF TRANSMITTAL
DATE
March 27, 2013
JOB NO.
08$070
PROPOSAL NO.
ATTN:
2
RE-
Dan River Combined Cycle Project — BMP asbuilt
3 -27 -13
1
401 Certification
0 9 - p
WE ARE SENDING YOU ❑x Attached PX Via FedEx _the following items:
V ia Mail
Shop Drawings Prints ❑ Plans ❑ Samples ❑ Specifications
Copy of Letter Change Order
Photographs Control Photographs ❑ Contact Prints ❑ Manuscripts ❑ CD
Diapositives x See Below
COPIES
DATE
NO.
DESCRIPTION
1
3 -26-13
2
BMP — asbuilt drawings
1
3 -27 -13
1
401 Certification
THESE ARE TRANSMITTED as checked below:
For approval Approved as submitted Resubmit
For your use Approved as noted Submit
As requested Return for corrections Return
For review and comment x For your records
Control survey required Analytical aerial triangulation required
See below remarks ri For review and comment
❑ FOR BIDS DUE
REMARKS
COPY TO:
copies for approval
copies for distribution
corrected prints
20 ❑ PRINTS RETURNED AFTER LOAN TO US
SIGNED:
A.

l�CDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Pat McCrory Charles Wakild, P. E. John E. Skvada, III
Governor Director Secretary
DWQ Project No: 09 -0940
Applicant: Duke Energy Carolinas, LLC
County: Rockingham County
Project Name: Dan River Combined Cycle Project
401 Water Quality Certification Issued Date: Modified September 7, 2011
Certificate of Completion
Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer
Rules, and any subsequent modifications, the applicant is required to return this certificate to the
Webscape Unit, NC DWQ, 1650 Mail Service Center, Raleigh, NC, 27699 -1650. This form may be returned
to DWQ by the applicant, the applicant's authorized agent, or the project engineer. It is not necessary to
send certificates from all of these.
Applicant's Certification
1, . hereby state that, to the best of my abilities, due care and
diligence was used in the observation of the construction such that the construction was observed to be
built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the
approved plans and specifications, and other supporting materials.
Signature: Date:
Agent's Certification
1, . hereby state that, to the best of my abilities, due care and
diligence was used in the observation of the construction such that the constryc ion was observed to be
built within substantial compliance and intent of the 401 Water Quality Certifi JRw84MEKW&2 �
approved plans and specifications, and other supporting materials.
Signature:
Date:
If this project was designed by a Certified Professional
I, Jonathan A. Carter as a duly registered Professional Engineer (i.e., E
Surveyor, etc.) in the State of North Carolina, having been authorized to observe (periodically, weekly, full
time) the construction of the project, for the Permitee hereby state that, to the best of my abilities, due
care and diligence was used in the observation of the construction such that the construction was
observed to be built within substantial compliance and intent of the 401 Water Quality Certification and
Buffer Rules, the
Signature:
ns, and
materials.
-77 -1
L30M916 AL
Wetlands, Suffers, Stomrwater — Compliance and Permitting (Webscape) Unit One
1650 Mail Service Center, Ralegh, North Carolina 27699 -1650 V6.
,� "q 'e `v r NorthCarohna
Location: 512 N. Salisbury St Raleigh, North Carolina 27604 �' ��.K ° Phone: [phone] FAX: [phone] Customer Service:1 -877 -623-6748 .. Q� •••
Internet www.ncwaterquality.org y�'7A
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7. SHOP DRAWINGS FOR ALL APPURTENANCES (I.E., GATE VALVE,
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CALL ULOCO 1). CONTRACTOR IS FULLY RESPONSIBLE FOR CONTACT: JG
BEFORE YOU DIG APPROPRIATE PARTIES AND ASSURING THAT EXIST4N"3 UTILITIES
ARE LOCATED PRIOR TO BEGINNING CONSTRUCTION.
2). CONTRACTOR IS RESPONSIBLE FOR PLACING BARRICADES USING
FLAGMEN, ETC., AS NECESSARY TO INSURE SAFETY TO THE
PUBLIC.
3). ALL PAVEMENT CUTS, CONCRETE OR ASPHALT, ARE TO BE
REPLACED ACCORDING TO STANDARDS OF THE NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION.
1- 800 -6TY DAMAGE AGE )• 9
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12 INCH THICK
CLAY LINER
HANDWHEEL STEM WITH
ADEQUATE SUPPORTS
PROPOSED
GROUND C9q
0
(SEE NOTES
THIS SHEET)
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8'° DIP EMERGENCTY DRAIN
1100'
RIP RAP APRON
\ / \ \/\\ / \/ \/ \ \ / \i \ \ / \ / \ \\ \ \ / \ / \\ \ \/\�. /.,
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MAT7NG EQUIVALENT TO NORTH
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NTS
BAR SCREEN
TRASH RACK
SEE DETAIL
DRAIN PIPE ANCHOR
NTS
BAR SCREEN TRASH RACK
NTS
14 +50
14 +00
13 +50
13 +00
12 +50
12 +00
11 +50
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MAIN
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CONCRETE
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JAC
0/20/09
BASIN
DRAINAGE
IMPERVIOUS
IMPERVIOUS
RISER SIZE
BARREL
BARREL
INVERT
INVERT
BARREL
CTO
=DAMA55945
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ORIFICE 1
ORIFICE 2
ORIF`CE 2
BOTTOM
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TOP DAM
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\
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535.88
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12.42' /
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536.62
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536.25 .,
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530.50
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0/20/09
BASIN
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530.50
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0/20/09
ADDED VERTICAL SCALE. REVISED
TOP OF DAM ELEV.
PROJECT#: 08070 DATE: 09/14/09
DRAWN BY: JAC CHECKED BY' DEB
TITLE
WET DETENTION POND #2
PROFILE & DETAILS
SHEET
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AND REPLACED WITH COMPACTED EARTH FILL.
2 COMPACTED EARTH FILL TO HAVE DRY UNIT WEIGHT OF AT LEAST 90
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3. EXCAVATED SIDE SLOPES TO BE STABILIZED WITH GRASS COVER IN
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4. FINAL DAM EMBANKMENT SLOPES TO BE TRACKED AND STABILIZED
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FROM EROSION & SEDIMENT CONTROL PLAN.
5. REINFORCED CONCRETE RISER, STRUCTURE TO BE 36° DIAMETER.
6. ANTI -SEEP COLLARS FOR DISCHARGE PIPE SHALL HAVE WATERPROOF
CONNECTION TO DISCHARGE PIPE.
7. SHOP DRAWINGS FOR ALL APPURTENANCES (I.E., GATE VALVE,
HANDWHEEL, ETC.) SHALL BE SUBMITTED TO ENGINEER FOR REVIEW
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5. REINFORCED CONCRETE RISER, STRUCTURE TO BE 36° DIAMETER.
6. ANTI -SEEP COLLARS FOR DISCHARGE PIPE SHALL HAVE WATERPROOF
CONNECTION TO DISCHARGE PIPE.
7. SHOP DRAWINGS FOR ALL APPURTENANCES (I.E., GATE VALVE,
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TITLE
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PLAN & PROFILE
SHEET
L;�7 ■ 1
DMOC- DE- C- OO.EC -26

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2). CONTRACTOR IS RESPONSIBLE FOR PLACING BARRICADES USING
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DRAWN BY: JAC CHECKED BY: DEB
TITLE
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PLAN
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JOINTS SHALL BE SEALED %
MAST'. =C CAULK. INSIDE JOR
SHALL BE GROUT
CONCRETE ANCHOR
RISER DETAIL
NTS
2- 1
1 a n EMERGENCY
® DRAIN
N
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BAR SCREEN
TRASH RACK
SEE DETAIL
DRAIN PIPE ANCHOR
NTS
6" 6"
SECTION A -A
2 "X2 "X1/4"
ANGLE (TYP
1/2"0 REBAI
TRASH RACK
2D
PRECAST CONCRETE
RISER SECTIONS
DNCRETE KEYWAY
BAR SCREEN TRASH RACK
NTS
TECHNICAL
SPECIFICATIONS:
LEGENa
1.
SUBGRADE FOR DAM TO BE PROOF ROLLED PRIOR TO EARTH FILL
780 - EXISTING GRADE CONTOUR
PLACEMENT. ANY SOFT OR PUMPING AREAS ARE TO BE UNDERCUT
>m
AND REPLACED WITH COMPACTED EARTH FILL.
PERMANENT
PERMANENT
�
- PROPOSED GRADE CONTOUR
2
COMPACTED EARTH FILL TO HAVE DRY UNIT WEIGHT OF AT LEAST 90
MAIN
RISER
PCF. ALL EARTH FILL TO BE COMPACTED TO MINIMUM OF 95% OF
ASBUILT
WEIR
STD. PROCTOR MAXIMUM DRY DENSITY.
ol IN 11 ma IN NJ al to ffm 0 - LIMITS OF DISTRUBANCE
3.
EXCAVATED SIDE SLOPES TO BE STABILIZED WITH GRASS COVER IN
AC
:5;
ACCORDANCE WITH SEEDING SPECIFICATIONS FROM EROSION &
�� lU'1 - TEMPORARY DIVERSION DITCH
IMPERVIOUS
SEDIMENT CONTROL PLAN.
RISER SIZE
4.
FINAL DAM EMBANKMENT SLOPES TO BE TRACKED AND STABILIZED
- TEMPORARY POROUS BAFFLES
INVERT
WITH GRASS COVER IN ACCORDANCE WITH SEEDING SPECIFICATIONS
DRAIN
POOL
FROM EROSION & SEDIMENT CONTROL PLAN.
- TEMPORARY SILT FENCE
5.
REINFORCED CONCRETE RISER STRUCTURE TO BE PREFABRICATED 5
ORI:.ICE 2
BOTTOM
FT. x 5 FT. INTERIOR DIMENSIONS.
CREST
6.
ANTI -SEEP COLLARS FOR DISCHARGE PIPE SHALL HAVE WATERPROOF
ANCHOR
ANTI -SEEP
CONNECTION TO DISCHARGE PIPE.
SPILLWAY
7.
SHOP DRAWINGS FOR ALL APPURTENANCES (I.E., GATE VALVE,
ANTI-VC
RTEX PLATE
HANDWHEEL, ETC.) SHALL BE SUBMITTED TO ENGINEER FOR REVIEW
Q 2
AND APPROVAL.
LENGTH
8.
12" CLAY LINER TO BE RECOMPACTED CLAYEY SOIL MATERIAL. THE
SLOPE
SIZE
LINER SHALL HAVE A MAXIMUM INFILTRATION RATE OF 0.01 IN /HR.
VOLUME
SIZE
CLAY SHALL BE PLACED IN 2 LIFTS WITH DEEP PENETRATING
\
INV. ELEV.
SHEEPSFOOT ROLLER (CAT 815 OR EQUAL) TO MINIMUM COMPACTION
Q
i /
OF 98% STANDARD PROCTOR MAXIMUM DRY DENSITY.
WHEEL WITH TRASH RA
14 +50
14 +00
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12 +50
12 +00
11+50
11+00
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MAIN
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AC
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BASIN
DRAINAGE
IMPERVIOUS
IMPERVIOUS
RISER SIZE
BARREL
BARREL
INVERT
INVERT
BARREL
DRAIN
POOL
POOL
ORIFICE 1
ORIFICE I
ORIFICE 2
ORI:.ICE 2
BOTTOM
CREST
CREST
CTOP
OF DAM 9 s
ANCHOR
ANTI -SEEP
SPILLWAY
SPILLWAY
SA /DA
ANTI-VC
RTEX PLATE
AREA
INSIDE
DIAMETER
LENGTH
UPSTREAM
DOWNSTREAM
SLOPE
SIZE
SURFACE
VOLUME
SIZE
INV. ELEV.
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Q
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10.00'
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LENGTH
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RATIO
TYPE
POND -2
18.15ac
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ING DEVICE
(MIN.)
535.88
104.0 F7
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523.00
1.73%
/
12.42' /
533.07
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536.62
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533.00
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ATED SHIELF
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RIP RAP APRON
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GATE VANLE
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BASIN
DRAINAGE
IMPERVIOUS
IMPERVIOUS
RISER SIZE
BARREL
BARREL
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INVERT
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DRAIN
POOL
POOL
ORIFICE 1
ORIFICE I
ORIFICE 2
ORI:.ICE 2
BOTTOM
CREST
CREST
TOP DAM
ELEV.
ANCHOR
ANTI -SEEP
SPILLWAY
SPILLWAY
SA /DA
AREA
AREA
INSIDE
DIAMETER
LENGTH
UPSTREAM
DOWNSTREAM
SLOPE
SIZE
SURFACE
VOLUME
SIZE
INV. ELEV.
SIZE
INV. ELEV.
ELEV.
ELEV.
ELEV.
ELEV.
FOREBAY
SIZE
COLLAR
LENGTH
SURFACE
RATIO
TYPE
POND -2
18.15ac
9.16ac
50.4
5'x5'
48"
104.0 F7
524.80
523.00
1.73%
8" DIP
24,906 SF
86,832 CF
2.5" DIA.
530.50
(2) 10" 0
5,32.10
525.00
535.50
536.00
538.00
533.00
8'x8'x1'
7'x7'xl'
12 LF
GRASS
2.75
WET DETENTION POND
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ADDED VERTICAL SCALE. REVISED
TOP OF DAM ELEV.
PROJECT #: 086070 DATE: 09/14/09
DRAWN BY: JAC CHECKED BY: DEB
TITLE
WET DETENTION POND #2
PROFILE & DETAILS
SHEET
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DNROC- DE- C- 001C -29