20170149 Ver 1_401 Application_20170201

I.
amec 1
foster
wheeler
Amec Foster Wheeler Environment and Infrastructure
4021 Stirrup Creek Drive, Suite 100
Durham, North Carolina 27703
Phone: [phone] Fax: [phone]
LETTER OF TRANSMITTAL
2 0 1 70 1 49
TO: Ms. Karen Higgins DATE: January 31, 2017
NC DWR, 401 & Buffer Permitting
Branch
512 North Salisbury Street PROJECT NO.: 7810-16-0803
Raleigh, NC 27604 PROJ. NAME: Marshall Steam Station Beaver Dam Creek Culvert
Improvements
SUBJECT: NWP 39 PCN Application
WE TRANSMIT TO YOU: HEREWITH F1 UNDER SEPARATE COVER
SUBJECT: ACTION: SENT BY:
®DRAWINGS ❑FOR YOUR INFORMATION []MAIL
F-1 SPECIFICATIONS ®FOR YOUR COMMENT OR APPROVAL ❑CERTIFIED MAIL
❑CALCULATIONS ❑RETURNED FOR CORRECTION: RESUBMIT ❑EXPRESS
❑REPORT ❑APPROVED AS NOTED ❑COURIER
❑COST ESTIMATE ❑AS REQUESTED ®HAND DELIVERED
OAS NOTED ❑FACSIMILE:
COPIES DATE DESCRIPTION
4 1/31/2017 Nationwide Permit #39 PCN Application
REMARKS:
CC:
LSS, PWS
Senior Ecologist
Direct Phone: [phone]
transmittal
CONFIDENTIALITY NOTICE: This message is intended only for the use of the individual or entity to which it is addressed, and may contain information that is
privileged, confidential, and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, or the employee or agent responsible
for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited.
If you have received this communication in error, please notify us immediately by telephone and return the original message to us at the above address via the U.S. Postal
Service. Thank you.

Ooy\NA T�g
77
o � �
Office Use Only:
Corps action ID no.
DWQ project no.
Form Version 1.4 January 2009
Page 1 of 10
PCN Form — Version 1.4 January 2009
Pre -Construction Notification (PCN) Form
A.
Applicant Information
1.
Processing
1a.
Type(s) of approval sought from the Corps:
❑X Section 404 Permit ❑ Section 10 Permit
1b. Specify Nationwide Permit (NWP) number: 39 or General Permit (GP) number:
1c.
Has the NWP or GP number been verified by the Corps?X❑
Yes ❑ No
1d. Type(s) of approval sought from the DWQ (check all that apply):
❑X 401 Water Quality Certification — Regular ❑ Non -404 Jurisdictional General Permit
❑ 401 Water Quality Certification — Express ❑ Riparian Buffer Authorization
1e.
Is this notification solely for the record
because written approval is not required?
For the record only for DWQ
401 Certification:
❑ Yes ❑X No
For the record only for Corps Permit:
❑ Yes ❑X No
1f.
Is payment into a mitigation bank or in -lieu fee program proposed for
mitigation of impacts? If so, attach the acceptance letter from mitigation bank
or in -lieu fee program.
❑ Yes ❑X No
1g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1h
below.
❑ Yes NX No
1h.
Is the project located within a NC DCM Area of Environmental Concern (AEC)?
❑ Yes ❑X No
2.
Project Information
2a.
Name of project:
Marshall Steam Station
2b.
County:
Catawba County
2c.
Nearest municipality / town:
Sherrills Ford
2d.
Subdivision name:
N/A
2e.
NCDOT only, T.I.P. or state project no:
N/A
3.
Owner Information
3a.
Name(s) on Recorded Deed:
Duke Energy Carolinas, LLC
3b.
Deed Book and Page No.
2954/0421
3c.
Responsible Party (for LLC if
applicable):
Duke Energy Carolinas, LLC
3d.
Street address:
8320 East NC 150
3e. City, state, zip:
Sherrills Ford, 28673
3f.
Telephone no.:
919-546-7457
3g.
Fax no.:
3h. Email address:
[e-mail]
Page 1 of 10
PCN Form — Version 1.4 January 2009

4. Applicant Information (if different from owner)
4a. Applicant is:
❑ Agent ❑X Other, specify: Duke Energy Progress Employee
4b. Name:
Steve Cahoon - Senior Environmental Specialist
4c. Business name
(if applicable):
Duke Energy Progress
4d. Street address:
410 S. Wilmington Street
4e. City, state, zip:
Raleigh, NIC 27601
4f. Telephone no.:
919-546-7457
4g. Fax no.:
4h. Email address:
[e-mail]
5. Agent/Consultant Information (if applicable)
5a. Name:
5b. Business name
(if applicable):
5c. Street address:
5d. City, state, zip:
5e. Telephone no.:
5f. Fax no.:
5g. Email address:
Page 2 of 10

B. Project Information and Prior Project History
1. Property Identification
1a. Property identification no. (tax PIN or parcel ID):
Parcel ID: 461803426350
1 b. Site coordinates (in decimal degrees):
Latitude: 35.60142136 Longitude: 80.97709656
1c. Property size:
1400 acres
2. Surface Waters
2a. Name of nearest body of water to proposed project:
Beaverdam Creek
2b. Water Quality Classification of nearest receiving water:
WS-IV,B;CA
2c. River basin:
Upper Catawaba - HUC 03050101
3. Project Description
3a. Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this
application:
The site contains the existing Marshall Steam Station electric generating plant and the associated ash basin. Land us in the vicinty fo the project is
primarly undeveloped forest land, agricultural land and residential and commercial development.
3b. List the total estimated acreage of all existing wetlands on the property: 9.42
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property: 11291
3d. Explain the purpose of the proposed project:
The purpose of the project is to replace existing damaged culvert that will receive storm water from a new holding basin.
3e. Describe the overall project in detail, including the type of equipment to be used:
See the project narratives in Attachement A. Typical construction equipment including tracked/wheeled excavators and dump trucks may be used.
4. Jurisdictional Determinations
4a. Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /
project (includingall prior phases)in the past?
❑X Yes ❑ No ❑ Unknown
Comments: Field approval by USAGE on 11-3-2015
4b. If the Corps made the jurisdictional determination, what type
of determination was made?
Preliminary El Final
4c. If yes, who delineated the jurisdictional areas?
Name (if known): Amec Foster Wheeler
Agency/Consultant Company: Amec Foster Wheller
Other:
4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
Duke Energy has submitted an approved jurisdictional determination request. USACE completed a field review of the Marshall Steam Station wetland
delineation on November 3, 2015. The delineation at the project site location was reviewed during this site visit and approved with revisions.
5. Project History
5a. Have permits or certifications been requested or obtained for
this project (including all prior phases) in the past?
El Yes ❑X No ❑ Unknown
5b. If yes, explain in detail according to "help file" instructions.
6. Future Project Plans
6a. Is this a phased project?
❑ Yes X❑ No
6b. If yes, explain.
Page 3 of 10
PCN Form — Version 1.4 January 2009

C. Proposed Impacts Inventory
1. Impacts Summary
1 a. Which sections were completed below for your project (check all that apply):
❑ Wetlands ❑X Streams — tributaries ❑ Buffers ❑ Open Waters ❑ Pond Construction
2. Wetland Impacts
If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted.
2a.
2b.
2c.
2d.
2e.
2f.
Wetland impact
Type of impact
Type of wetland
Forested
Type of jurisdiction
Area of
number
Corps (404,10) or
impact
Permanent (P) or
DWQ (401, other)
(acres)
Temporary T
W1 T
Fill
Headwater Wetland
Yes
Corps
0.02
W2
Choose one
Choose one
Yes/No
W3
Choose one
Choose one
Yes/No
W4
Choose one
Choose one
Yes/No
W5
Choose one
Choose one
Yes/No
W6
Choose one
Choose one
Yes/No
2g. Total Wetland Impacts:
2h. Comments:
Temporary wetland impacts of 0.02 acre may be necessary during construction of the adjacent new holding basin side slopes. These impacts may
include excavation down to suitable material to ensure stability of the holding basin side slope with suitable material backfilled in the excavated areas.
Areas temporarily impacted will be returned to pre -construction conditions after construction activities are completed.
3. Stream Impacts
If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site, then complete this
question for all stream sites impacted.
3a.
3b.
3c.
3d.
3e.
3f.
3g.
Stream impact
Type of impact
Stream name
Perennial (PER) or
Type of
Average
Impact
number
intermittent (INT)?
jurisdiction
stream
length
Permanent (P) or
width
(linear
Temporary (T)
(feet)
feet)
S1 P
Culvert
Beaverdam Creek
PER
Corps
6
86
S2 P
Fill
Beaverdam Creek
PER
Corps
6
62
S3
Choose one
S4
Choose one
S5
Choose one
S6
Choose one
3h. Total stream and tributary impacts
148
3i. Comments:
S1 and S2 are both Beaverdam Creek. S1 will have 86 linear feet of impact by culvert. S2 will have 62 linear feet of impact by fill for a rip -rap energy
dissipator. No other crossings or impacts are proposed as part of this project.
Page 4 of 10
PCN Form — Version 1.4 January 2009

4. Open Water Impacts
If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of
the U.S. then indivi ually list all open water impacts below.
4a.
Open water
impact number
Permanent (P) or
Temporary T
4b.
Name of waterbody
(if applicable)
4c.
Type of impact
4d.
Waterbody
type
4e.
Area of impact (acres)
01
Choose one
Choose
02
Choose one
Choose
03
Choose one
Choose
04
Choose one
Choose
4f. Total open water impacts
4g. Comments:
S. Pond or Lake Construction
If pond or lake construction proposed, the complete the chart below.
5a.
Pond ID number
5b.
Proposed use or
purpose of pond
5c. 5d. 5e.
Wetland Impacts (acres) Stream Impacts (feet) Upland
(acres)
Flooded Filled
Excavated Flooded
Filled
Excavated
P1
Choose one
P2
Choose one
5f. Total:
5g. Comments:
5h. Is a dam high hazard permit required?
❑ Yes ❑ No If yes, permit ID no:
5i. Expected pond surface area (acres):
5j. Size of pond watershed (acres):
5k. Method of construction:
6. Buffer Impacts (for DWQ)
If project will impact a protected riparian buffer, then complete the chart below. If yes, then individually list all buffer impacts
below. If any impacts require mitigation, then you MUST fill out Section D of this form.
6a. Project is in which protected basin?
❑ Neuse ❑ Tar -Pamlico ❑ Catawba ❑ Randleman ❑ Other:
6b.
Buffer Impact
number —
Permanent (P) or
Temporary T
6c.
Reason for impact
6d.
Stream name
6e.
Buffer
mitigation
required?
6f.
Zone 1
impact
(square
feet)
6g.
Zone 2
impact
(square
feet
B1
Yes/No
B2
Yes/No
B3
Yes/No
B4
Yes/No
B5
Yes/No
B6
Yes/No
6h. Total Buffer Impacts:
6i. Comments:
Page 5 of 10

D. Impact Justification and Mitigation
1. Avoidance and Minimization
1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
The limits of disturbance (LOD) for the proposed culvert replacment will be limited to the areas necessary for placement of the culvert and rip -rap
dissipator pad. Impacts to Waters of the US, including potential temporary wetland impacts, will be kept to the smallest footprint practicable.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
Silt fencing and sediment logs will be utilized to prevent sediment from entering stream or wetland features. Equipment used during construction will
work outside of impact areas. Equipment staging areas and/or material stockpile areas will be outside of jurisdictional wetlands and streams.
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a. Does the project require Compensatory Mitigation for
impacts to Waters of the U.S. or Waters of the State?
❑ Yes ❑X No
2b. If yes, mitigation is required by (check all that apply):
❑ DWQ ❑ Corps
2c. If yes, which mitigation option will be used for this
project?
❑ Mitigation bank
El Payment to in -lieu fee program
❑ Permittee Responsible Mitigation
3. Complete if Using a Mitigation Bank
3a. Name of Mitigation Bank:
3b. Credits Purchased (attach receipt and letter)
Type: Choose one
Type: Choose one
Type: Choose one
Quantity:
Quantity:
Quantity:
3c. Comments:
4. Complete if Making a Payment to In -lieu Fee Program
4a. Approval letter from in -lieu fee program is attached.
❑ Yes
4b. Stream mitigation requested:
linear feet
4c. If using stream mitigation, stream temperature:
Choose one
4d. Buffer mitigation requested (DWQ only):
square feet
4e. Riparian wetland mitigation requested:
acres
4f. Non -riparian wetland mitigation requested:
acres
4g. Coastal (tidal) wetland mitigation requested:
acres
4h. Comments:
5. Complete if Using a Permittee Responsible Mitigation Plan
5a. If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan.
Page 6 of 10
PCN Form — Version 1.4 January 2009

6. Buffer Mitigation (State Regulated Riparian Buffer Rules) — required by DWQ
6a. Will the project result in an impact within a protected riparian buffer that requires
Yes QX No
buffer mitigation?
6b. If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation. Calculate the
amount of mitigation required.
6c.
6d.
6e.
Zone
Reason for impact
Total impact
Multiplier
Required mitigation
(square feet)
(square feet)
Zone 1
3 (2 for Catawba)
Zone 2
1.5
6f. Total buffer mitigation required:
6g. If buffer mitigation is required, discuss what type of mitigation is proposed (e.g., payment to private mitigation bank,
permittee responsible riparian buffer restoration, payment into an approved in -lieu fee fund).
6h. Comments:
Page 7 of 10

E. Stormwater Management and Diffuse Flow Plan (required by DWQ)
1. Diffuse Flow Plan
1a. Does the project include or is it adjacent to protected riparian buffers identified
❑ Yes ❑X No
within one of the NC Riparian Buffer Protection Rules?
1 b. If yes, then is a diffuse flow plan included? If no, explain why.
❑ Yes ❑ No
2. Stormwater Management Plan
2a. What is the overall percent imperviousness of this project?
0%
2b. Does this project require a Stormwater Management Plan?
❑ Yes ❑x No
2c. If this project DOES NOT require a Stormwater Management Plan, explain why:
There will be no impervious surfaces associated with this project.
2d. If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of the plan:
2e. Who will be responsible for the review of the Stormwater Management Plan?
3. Certified Local Government Stormwater Review
3a. In which localgovernment's jurisdiction is thisproject?
❑ Phase II
❑ NSW
3b. Which of the following locally -implemented stormwater management programs
El USMP❑
apply (check all that apply):
Water Supply Watershed
❑ Other:
3c. Has the approved Stormwater Management Plan with proof of approval been
❑Yes ❑ No
attached?
4. DWQ Stormwater Program Review
❑Coastal counties
❑HQW
4a. Which of the following state -implemented stormwater management programs apply
❑ORW
(check all that apply):
[]Session Law 2006-246
❑ Other:
4b. Has the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑ No
attached?
5. DWQ 401 Unit Stormwater Review
5a. Does the Stormwater Management Plan meet the appropriate requirements?
❑ Yes E] No
5b. Have all of the 401 Unit submittal requirements been met?
❑ Yes ❑ No
Page 8 of 10
PCN Form — Version 1.4 January 2009

F. Supplementary Information
1. Environmental Documentation (DWQ Requirement)
1 a. Does the project involve an expenditure of public (federal/state/local) funds or the
❑ Yes 0 No
use of public (federal/state) land?
1 b. If you answered "yes" to the above, does the project require preparation of an
environmental document pursuant to the requirements of the National or State
El Yes ❑ No
(North Carolina) Environmental Policy Act (NEPA/SEPA)?
1 c. If you answered "yes" to the above, has the document review been finalized by the
State Clearing House? (If so, attach a copy of the NEPA or SEPA final approval
letter.)
❑ Yes ❑ No
Comments:
2. Violations (DWQ Requirement)
2a. Is the site in violation of DWQ Wetland Rules (15A NCAC 2H .0500), Isolated
Wetland Rules (15A NCAC 2H .1300), DWQ Surface Water or Wetland Standards,
❑ Yes ❑X No
or Riparian Buffer Rules (15A NCAC 2B .0200)?
2b. Is this an after -the -fact permit application?
❑ Yes ❑X No
2c. If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s):
3. Cumulative Impacts (DWQ Requirement)
3a. Will this project (based on past and reasonably anticipated future impacts) result in
❑ Yes ❑X No
additional development, which could impact nearby downstream water quality?
3b. If you answered "yes" to the above, submit a qualitative or quantitative cumulative impact analysis in accordance with the
most recent DWQ policy. If you answered "no," provide a short narrative description.
4. Sewage Disposal (DWQ Requirement)
4a. Clearly detail the ultimate treatment methods and disposition (non -discharge or discharge) of wastewater generated from
the proposed project, or available capacity of the subject facility.
This project will not generate wastewater.
Page 9 of 10
PCN Form — Version 1.4 January 2009

S. Endangered Species and Designated Critical Habitat (Corps Requirement)
So. Will this project occur in or near an area with federally protected species or
Yes ®No
habitat?
5b. Have you checked with the USFWS concerning Endangered Species Ad
❑Yes ®No
impacts?
5m If yes, Indicate the USFWS Field Office you have contacted.
5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
USFWS Information, Planning, and Conservation System (IP&Q website and the N.C. Natural Heritage Program (NCNHP) Natural Heritage
Database Search Interactive webske.
6. Essential Fish Habitat (Corp Requirement)
6a. Will this project occur in or near an area designated as essential fish habitat?
❑ Yes ® No
6b. What data sources did you use to determine whether your site would Impact Essential Fish Habitat?
htip:/Avww.habkat.nose.gov4 tacftWoflwhabbonepper.html
7. Historic or Prehistoric Cultural Resources (Corps Requirement)
7a. Will this project occur in or near an area that the state, federal or tribal
governments have designated as having historic or cultural preservation
❑ Yes ® No
status (e.g., National Historic Trust designation or properties significant in
North Carolina history and archaeology)?
7b. What data sources did you use to determine whether your site would impact historic or archeological resources?
N.C. Dept. 01 Cultural Resources, Stats Mstoric Presemmllon OBice (SHPO) MeraclWe websb (HPOWEB).
8. Flood Zone Designation (Corps Requirement)
Be. Will this project occur in a FEMA-designated 100-year floodplain?
❑ Yes ® No
8b. If yes, explain how project meets FEMA requirements:
8c. What source(s) did you use to make the floodplain determination?
NC Flood Maps. 4617 FEMAIFIRM number 9710461700K, dated March 18, 2008
S-ve vc- GG 6001
Oda
Applicant/Agenrs Printed NameAppiicanf/Agent's
Signature
Date
(Agents signature Is valid only N an authorizat(an
letter tram the almlicant Is
Page 10 of 10

USACE Pre -Construction Notification — NWP 39
Duke Energy Carolinas, LLC
Marshall Steam Station Beaver Dam Creek Culvert Improvements
Catawba County, NC
ATTACHMENTS
Figure 1
Site Location Map
Figure 2
USGS Topographic map
Figure 3
NRCS Soils Map
Figure 4
National Wetland Inventory Map
Figure 5
Jurisdictional Waters Map
Figure 6
Floodplain Map
Attachment A
Impact drawing

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LEGEND
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Project Area
Marshall Steam Station
Beaver Dam Creek, Culvert Improvements
�% DUKE
amec
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Catawba County, NC
'*ENERGY.
wheeler
NOTE: THIS FIGURE IS FOR REFERENCE ONLY.
PROJECT NO:
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wheeler
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Marshall Steam Station
ame[ Project Area NWI Wetland -Freshwater Pond Beaver Dam Creek, Culvert Improvements .(.. DUKE
foster Wetland Type Catawba County, NC ENERGY
wheeler Existing Ash Basins Lake
------ Freshwater Emergent Wetland
NOTE: THIS FIGURE IS FOR REFERENCE ONLY. PROJECT NO: 7810160803 FIGURE NO: 4
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Marshall Steam Station
Beaver Dam Creek, Culvert Improvements DUKE
Catawba County, NC ENERGY
PROJECT NO: 781016080$ FIGURE NO: 5

Attachment A
The Marshall Steam Station has two 350 MW coal fired units and two 648 MW coal fired units for
a total combined electrical power capacity of 1,996 MW. Bottom ash that results from the coal
combustion is currently disposed in an active ash basin (see GA102 for the ash basin location).
The units utilize a wet bottom ash handling system to sluice bottom ash and pyrites to a drainage
ditch north of the coal pile. The ash is then dredged from the ditch and piled in an adjacent area
to dewater active ash basin. Water from the drainage ditch flows into the ash basin. There are
separate bottom ash sluice lines for each of the four Units and a separate pyrites sluicing line
common to all four units (5 lines total). The ash basin also receives storm water, landfill leachate,
and other miscellaneous process streams. The Coal Combustion Residual (CCR) Rule issued in
April 2015 changes how bottom ash and water streams will be handled at Marshall Steam Station.
The ash sluicing system will be converted to a dry bottom ash system in order for the ash basin
can be taken out of service and closed. In lieu of wet disposal, dewatered bottom ash and pyrites
will be landfilled in the Industrial Landfill on the north side of the plant property or sold. Bottom
ash and pyrites will be dewatered in United Conveyor Corporation (UCC) supplied Remote
Submerged Flight Conveyors (RSFC) in the DBA Island. A new retention basin will also be
constructed to receive the storm water and other water streams that are currently going to the ash
basin.
The Duke Energy Water Re -Direction Program includes equipment and facilities to comply with
the federal Coal Combustion Residue and Effluent Liquid Guideline (CCR/ELG) standards. In
general, the project scope includes conversion of the existing wet sluice bottom ash system to a
closed loop dry bottom ash system, construction of a new coal pile runoff holding basins, a new
retention basin consisting of two primary settling basins and a secondary basin, redirection of
miscellaneous plant wastewater from the existing ash pond to the holding retention basin, and
installation of new wastewater treatment facilities.
As part of the Water Re -Direction program, Duke Energy Proposes to replace an existing
damaged 18" X 264 linear foot (LF) corrugated metal pipe (CMP) at the Marshall Steam Station
under a Nationwide Permit 39. The damaged CMP will be replaced with (3) 30" X 363.83 LF
HDPE pipe that will be encased in concrete. New permanent stream impacts included in this
permit application include 86.0 LF of stream to be culverted and 62.0 LF stream to be filled with
the placement of a rip -rap energy dissipation pad at the end of the new pipes. The new stream
impacts include (3) 30" X 87.5 LF HDPE pipe that will be encased in concrete (Drawing No.
MAR00-CCV-C-GR.AL-001). The existing pipe to be replaced and the proposed new section of
pipe will receive stormwater from the new holding basin. Temporary wetland impacts of 0.02 acre
may be necessary during construction of the new holding basin side slopes. These impacts may
include excavation down to suitable material to ensure stability of the holding basin side slopes.
Suitable material will be backfilled in the excavated areas. Areas temporarily impacted will be
returned to pre -construction conditions after construction activities are completed.

SEDIMENT LOG (TYP)
C."'. SEDIMENT LOG TYPE III
(91NCH) OR APPROVED EQUAL.
INSTALL PER MANUFACTURERS
RECOMENDATIONS — — — � EXISTING GRADE COMPACTED BACKFILL — —
— - - — --- A
1 ;
SILT FENCE OPENING (TYP) N5 BARS 12' CTR EW
4.0'
N
SILT FENCE (TVP) (3) 30' HDPE PIPES
I
I F..
bIL + —
/ � 6
8 2 8
7yp CONCRETE ENCASEMENT
/ m
SECTION A
END STREAM IMPACT
PIPE TRENCH AND SPACING DETAIL
/ �i I A IMPACTED LFINOT TO SCALE
(APPROX 1,48FIMPACTED)
\\\ /
WETLAND A PROX 722.1 SO FT nl TEMPO 62.0 LF OF IMPACTED STREAM IN CHANNEL
OF 58,484.3 SO FT OF WETLANDS) BEGIN STREAM
IMPACT
1
54
CONCRETEENCASEMENT -
1
—c
—
REPLACE REPLE EXISTING
8 18' z AC LF CMP INV EL
+00 _ WITH (3) 30' It 263.83 LF — — — —' END SECTION
2 1 HDPE WWITH FES TOE FLAP RIPRAP
- I D-12'
25x00 1 - 3• r
Z
(MIN) � H
PLAN #5 tY EW
16 OZ
GEOTEXTILE
860 860 TOE WALL—D—
r SEE NOTE 2 FOR DEPTH
856 856
852 852
NOTES: (RIPRAPPED HDPE END SECTION)
848 $ - - - 848
$ m EXISTING GRADE 1. VERTICAL REBAR SHALL EXTEND THROUGH END SECTION TOE FLAP.
844 $+ m 844 2. TOE WALL SHALL BE 18' BELOW BOTTOM OF END SECTION ON UPSTREAM
e w PROPOSED GRADE
840 -F > - - - _ 840 END AND 36' ON DOWNSTREAM END.
m3
636 838 RIPRAPPEO HDPE END SECTION
m NOT TO SCALE
832 832
ry and
828
yZ-
828 N LEGEND
263.83 LF 30' HDPE
824 824
820 820 ••• IMPACTED STREAM
CONCRETE ENCASEMENT
816 816 EXISTING STREAM
---------- LI MI TS OF WETLAND
812 812 — .... LIMITS OF DISTURBANCE
808 808
■ B� B� B� SEDIMENT LOGS
804 - 804
800 800
e 22.2211'
m STATE PLAN
0+00 1.00 2+00 3+00 `1./
PROFILE _
PLANT GRID
NOTE: HORIZONTAL
1. ALL SIDE SLOPES ARE 3HAV UNLESS OTHERWISE NOTED. BCALE .FEET
a a m
2. UPON COMPLETION OF PROPOSED EMBANKMENT CONSTRUCTION VERTICAL T ITTLE WATER REDIRECTION PROGRAM F
WETLAND AREA TO BE RETURNED TO PRE -CONSTRUCTION CONDITION
AND GRADE.
FOR PERMITTING BEAVER DAM CREEK
PURPOSES ONLY CULVERT IMPROVEMENTS
FM MARSHALL STEAM STATION UNITS 1-4
BURNS
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KANSAS CIN, M064114 CATAWBA WIMiY NC
816333-9400 FLENPME MAROOLYG[BIAL-0Ot.DGN APPO: -
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M I tlste I by I ckd I description W. I date I by I ME Description
�o MAR00-CV-C-GR.AL-001 A
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