20150717 Ver 1_More Info Received_20150904

Homewood, Sue
From: Cahoon, Steve <SteveIahoon@duke'energy.com>
Sent: Thursday, September U3'ZUl5Z:ZUPK4
To: Homewood, Sue
Subject: FVV Dan River48'inch RAI
Attachments: Duke Dan River 48inchCulvert USA[ERAIResponse all attach ments_ZUl5U83l.pd�
P[N NVVP l8�48 inch cleanup area_8'3l'l5.pdf, USA[E RAI Response 48inch
Culvert project 20150831.doc
Thanks for the reminder. I should have copied you when I sent this to David.
Steve
From: Cahoon, Steve
Sent: Monday, August ]1,2O151O:]7AM
To: DaviU.e.Bai|ey20cbusa[2.amny.mi|
Subject: FW: Dan River 48-inch RAI
Please see the attached information in response to your request for additional information, related to the 48 inch
culvert pipe project, at our Dan River Station. A hard copy will follow this electronic submittal.
Thanks for your help with this project. Please contact me if you have any questions.
Steve
From: Witherspoon, ]oSh[mailto josh xvithecSpoon(d)ame[fw.[oml
Sent: Monday, August 31, 20159:59AM
To: Cahoon, Steve
Cm: Harmon Richard-amecfw; Cutler, ]amesO
Subject: Dan River 48-inch RAI
°°° Exercise caution. This is an EXTERNAL email. []O NOT open attachments or click links from
unknown senders D[unexpected eDlBil.°°°
Steve — Attached is the RA| response for your signature. Also attached is the PCN form and attachments. Please let us
know if you need anything else. Thanks.
Senior Ecologist, Environment and Infrastructure Americas, Aneo Foster Wheeler
4021 Stirrup Creek ome. Suite 100. Durham, NC 27703
T(n1n)-ou1-nnnn o(n1n)-ou1-14no M(n1n)-o1n-nn4n vo|p#r4a-14no
ioex. withers noonaamocfw.00m ameofw.00m
1

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Mr. David E. Bailey August 26, 2015
Project Manager
US Army Corps of Engineers
CE- SAW -RG -R
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587
RE: Response to Request for Additional Information
US Army Corps of Engineers Permit No. SAW- 2015 -01670
Duke Energy Dan River Stream Station
Eden, Rockingham County, NC
48 -inch Culvert Inlet Area Clean -Up
Dear Mr. Bailey:
Duke Energy, in consultation with Amec Foster Wheeler, Environment & Infrastructure,
Inc. (Amec Foster Wheeler), submitted a Pre - Construction Notification (PCN) to the
Raleigh Regulatory Field Office of the US Army Corps of Engineers (USACE) for
issuance of Nationwide Permit (NWP) 18 for the 48 -inch Culvert Inlet Area Clean -Up
project at the Dan River Steam Station, Eden, Rockingham County (PCN dated July 17,
2015). Subsequent to your review of the PCN, you presented five remarks and /or
requests for additional information (RAI) in correspondence, dated July 31, 2015, to
Duke Energy and the attention of Mr. Steve Cahoon. As enumerated herein for
discussion purposes, these five items and the respective responses are presented
below.
Item Number 1
The PCN includes impacts to stream and wetlands related to inundation. However, the
PCN does not include information regarding the discharge of dredged or fill material in
wetlands or other waters of the US that triggers a CWA section 404 permit. Please add
plans /design sheets and update section C of the PCN that clearly describe the regulated
activity.
Response
A 0.003 -acre (144 square feet) fill impact to waters of the US is now included under the
proposed action to backfill around a sump for the pumping system. This fill impact,
which will occur within the lowest portions of the wetland nearest to the abandoned 48-
inch pipe (i.e., Wetland 1), is required to facilitate the diversion of storm water flows from
the area upstream of this point to another surface water discharge at the Service Water
Settling Basin impoundment which discharges to the Dan River upstream of the
powerhouse dam. The location of the proposed concrete drop inlet is depicted in the
updated Plan View drawing, which is attached herein. A Cross - Section View drawing of
the concrete drop inlet is also attached herein. Finally, Section C of the PCN form has
been updated to reflect the aforementioned activities and further describe the regulated
activity. The revised PCN form is attached herein.
Accumulated ash from the February 2, 2014 release will be removed from the wetland
and upland areas by skimming off the upper layer of ash and soil mix and reseeding the

area. This latter activity may necessitate the backfill of soils as based on the depth of
removal of the accumulated ash.
Item Number 2
Section B.3d. of the PCN ties the purpose of the proposed project to the ash pond clean-
up. Note that this office is currently reviewing a proposal at the Dan River Steam Station
to expand a railroad line to dispose of coal ash on site (SAW- 2015- 01381). We will
review all projects related to coal ash clean up as part of the same single and complete
project. Based on NWP condition 28, and the definitions of "single and complete project"
and "independent utility" found in the NWP terms and conditions, please justify how this
proposed project is single and complete, and why it should not be considered cumulative
with the coal ash removal /disposal activities on site and the previously authorized 36"
culvert plug project (SAW- 2014 - 01477).
Response
The purpose of the 48 -inch Culvert Inlet Area Clean -Up project is to provide for the
clean -up of the accumulated ash from the pipe failure and to divert the temporary
impoundment of stormwater at the grouted 48 -inch CMP. The project was developed to
respond to the Coal Ash Management Act, as an effort to clean up deposited ash after
the failure of the 48 -inch culvert and keep stormwater out of the basin. The proposed
project preceded, and is not related to, the proposal to expand the railroad line at the
Dan River Steam Station to facilitate the disposal of coal ash from the station. To
summarize, the proposed action under SAW- 2015 -01381 for the expansion of the
railroad line to dispose of coal ash is presumed to represent a separate project, as it
specifically relates to the disposal of coal ash and is not associated with the temporary
impoundment of stormwater, or the prevention of stormwater flow under the ash fill basin
(i.e., as related to the 36 -inch Culvert Plug project and the 48 -inch Culvert Inlet Area
Clean -Up project).
The purpose of the permitted 36 -inch Culvert Plug project was to plug an existing 36-
inch diameter reinforced concrete culvert to prevent water from flowing under the ash fill
basin. The purpose /proposed actions of the 36 -inch Culvert Plug project and the 48 -inch
Culvert Inlet Area Clean -Up project are not identical. However, the USACE, Raleigh
Regulatory Field Office, issued NWP 18 for the 36 -inch Culvert Plug project (SAW -2014-
01477) with the following Special Condition 2: "Please note that future phases of pipe
closures and other coal ash basin cleanup activities at the Duke Energy Dan River
Steam Station may be considered part of a single and complete project, and impacts
may be considered cumulative, with respect to compensatory mitigation and Nationwide
Permit thresholds, with impacts permitted during earlier phases authorized and
documented under Action ID: SAW- 2014 - 01477." The permittee recognizes that the
impacts to jurisdictional waters of the US for the 48 -inch Culvert Inlet Area Clean -Up
project may be considered by the USACE to be cumulative with the impacts to
jurisdictional waters of the US that were authorized under SAW- 2014 -01477 for the 36-
inch Culvert Plug project. As such, compensatory mitigation for both projects may be
considered in a cumulative manner.
Item Number 3
Please note that, assuming comment 2 is addressed above, items currently listed in
PCN section C.2a and C.2b would be considered permanent impacts rather than

temporary, similar to the previously authorized 36" culvert plug project (SAW -2014-
01477).
Response
Section C.2a (wetland impacts) and section C.3a (stream impacts) of the PCN have
been revised to indicate that the proposed impacts to jurisdictional waters of the US for
the 48 -inch Culvert Inlet Area Clean -Up project will be permanent with respect to impact
type. The revised PCN is attached herein.
Item Number 4
A waiver of the stream impact threshold is requested based on Regional Condition 3.1.
However, the NCDWQ Stream ID Forms included with the PCN do not pertain to the
streams proposed for inundation (based on the latitude and longitude on the forms) and
document the features as being perennial instead of intermittent. Please submit
NCDWQ Stream ID Forms for the streams proposed for inundation to document an
intermittent flow regime.
Response
The NCDWQ Stream ID Forms for the three streams that are proposed for inundation for
the 48 -inch Culvert Inlet Area Clean -Up project are attached herein. These forms have
been revised to reflect a stream classification status of intermittent. The
latitude /longitude location data for the three streams, as reported on the forms, have
been verified.
Item Number 5
A reduced mitigation ratio of 1:1 is proposed for both wetland and stream inundation
impacts. Compensatory mitigation proposals should be based on aquatic function.
Further, as documented in the Wilmington District Public Notice dated 4/21/2015, the
Corps of Engineers Wilmington District will use the NC Wetland Assessment Method
( NCWAM) and the NC Stream Assessment Method (NCSAM) to evaluate aquatic
resource quality and functions for decisions regarding the amount and type of
compensatory mitigation.
<http: / /www.saw.usace.army.miI/ Missions/ RegulatoryPermitProgram /PublicNotices /tabid
/10057 /Article /5
85625 /implementation- of- nc -sam- and- nc- wam.aspx>
Please submit NCWAM and NCSAM forms for the wetland and stream areas proposed
for inundation to justify your proposed reduced mitigation ratio of 1:1. Although these
forms are referenced in the PCN document, they were not included in the submittal
package. Please note that the USACE "Stream Quality Assessment Worksheet" has
been replaced by the NCSAM form for documenting aquatic resource quality and
functions.
Response
The completed NC Stream Assessment Method (NCSAM) forms for Stream 1, Stream 2,
and Stream 3 for the 48 -inch Culvert Inlet Area Clean -Up project are attached herein.

The NC Wetland Assessment Method (NCWAM) forms for Wetland 1 and Wetland 2 for
the 48 -inch Culvert Inlet Area Clean -Up project are attached herein
Thank you in advance for your assistance with this project. If you have any questions or
need additional information, please contact Richard Harmon of Amec Foster Wheeler at
(919) 381 -1366 or at richard.harmon(a)amec.com.
Sincerely,
Steve Cahoon
Enclosures
Cc: Richard Harmon
Josh Bell

ti
L3 A Y
Office Use Only:
Corps action ID no.
DWQ project no.
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: NWP 18 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
le.
Is this notification solely for the record For the record only for DWQ
For the record only for Corps Permit:
because written approval is not required? 401 Certification:
❑ Yes X❑ No
❑ 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
❑X Yes ❑ No
or in -lieu fee program.
1g.
Is the project located in any of NC's twenty coastal counties. If yes, answer 1h
❑ Yes ❑X No
below.
1 h.
Is the project located within a NC DCM Area of Environmental Concern (AEC)?
❑ Yes ❑X No
2.
Project Information
2a.
Name of project: Duke Energy Carolinas, LLC - Dan River Steam Station - 48 -inch Inlet Area Clean -Up
2b.
County: Rockingham
2c.
Nearest municipality / town: Eden
2d.
Subdivision name: N/A
2e.
NCDOT only, T.I.P. or state project no:
3.
Owner Information
3a.
Name(s) on Recorded Deed: Duke Energy Carolinas, LLC
3b.
Deed Book and Page No. Deed Book: 1411; Page Number 2100
3c.
Responsible Party (for LLC if
applicable):
3d.
Street address: 900 S. Edgewood Road
3e.
City, state, zip: Eden, NC 27288
3f.
Telephone no.: (919) 546 -7457
3g.
Fax no.: (919) 546 -4409
3h.
Email address: steve.cahoon @duke - energy.com
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 Employee
4b.
Name:
Steve Cahoon
4c.
Business name
Duke Energy
(if applicable):
4d.
Street address:
410 S. Wilmington Street
4e.
City, state, zip:
Raleigh, NC 27601
4f.
Telephone no.:
(919) 546 -7457
4g.
Fax no.:
(919)- 546 -4409
4h.
Email address:
steve.cahoon @duke - energy.com
5.
Agent /Consultant Information (if applicable)
5a.
Name:
Joshua Bell, PE (Senior Water Resources Engineer)
5b.
Business name
(if applicable):
AMEC Foster Wheeler - Environment & Infrastructure
5c.
Street address:
2801 Yorkmont Road, Suite 100
5d.
City, state, zip:
Charlotte, NC 28208
5e.
Telephone no.:
(704)- 517 -2618
5f.
Fax no.:
(704)- 357 -8638
5g.
Email address:
josh.bell @amecfw.com
Page 2of10

B. Project Information and Prior Project History
1. Property Identification
1a. Property identification no. (tax PIN or parcel ID):
1 b. Site coordinates (in decimal degrees): Latitude: 36.489697
1c. Property size:
2. Surface Waters
2a. Name of nearest body of water to proposed project:
2b. Water Quality Classification of nearest receiving water:
2c. River basin:
3. Project Description
PIN 897908886870
Longitude: - 79.7176
3.09 acres
Dan River
Dan River = C
Roanoke River Basin / HUC 03010103
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 project site includes two emergent and scrub /shrub wetlands, each contain an intermittent stream channel. General land use in the project site
includes: power generation facilities (buildings, parking lots, etc.), ash ponds and ash fill areas, a rail service line, maintained grassed areas, and
shrub and brushland.
3b. List the total estimated acreage of all existing wetlands on the property: 0.47
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property: 448
3d. Explain the purpose of the proposed project:
The purpose of this project is to provide for the clean -up of ash pond and the temporary impoundment of stormwater at the grouted 48 -inch CMP.
3e. Describe the overall project in detail, including the type of equipment to be used:
See attachment A and the Plan View drawing for project details. See the Stormwater Diversion drawing for equipment details (pump and piping).
4. Jurisdictional Determinations
4a. Have jurisdictional wetland or stream determinations by the ❑ Yes ❑X No ❑ Unknown
Corps or State been requested or obtained for this property /
project (including all prior phases) in the past? Comments:
4b. If the Corps made the jurisdictional determination, what type ❑ preliminary ❑ Final
of determination was made?
4c. If yes, who delineated the jurisdictional areas? Agency /Consultant Company: Amec Foster Wheeler
Name (if known): Other:
4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
A field review of the wetland delineation with the USACE was conducted on June 9, 2015.
5. Project History
5a. Have permits or certifications been requested or obtained for El Yes X❑ No ❑ Unknown
this project (including all prior phases) in the past?
5b. If yes, explain in detail according to "help file" instructions.
Note: The USACE issued NWP SAW- 2014 -01477 (9/29/14) for the Steam Station "36 -inch Culvert Plug" project which included impacts to WOUS.
6. Future Project Plans
6a. Is this a phased project?
6b. If yes, explain.
❑ Yes ❑X No
Page 3of10
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):
❑X 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 P
Flooding Seep No Corps
0.285
W2 P
Flooding Seep No Corps
0.122
W3 P (W1)
Fill Seep No Corps
0.003
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:
0.41
2h. Comments:
The NC Wetland Assessment Method (NCWAM) forms are attached. Wetland impacts will be permanent due to stormwater impoundment.
Impounded water will be removed within 72 hours via pumping. Pumped flows will be discharged to the Service Water Settling Pond by
way of
existing piping to a proposed new stormwater outfall. A permanent fill impact of 0.003 -ac is proposed to Wetland 1 to facilitate diversion of stormwater.
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 Flooding UT Dan River INT Corps 2
219
S2 P
Flooding UT Dan River INT Corps
2
97
S3 P
Flooding UT Dan River INT Corps
2
132
S4
Choose one
S5
Choose one
S6
Choose one
3h. Total stream and tributary impacts
448
3i. Comments:
Duke Energy is requesting a waiver of the 300 feet of stream impact limit for the proposed impacts to these low quality stream channels.
The NC
Stream Assessment Method (NCSAM) forms are attached. Stream impacts will be permanent due to stormwater impoundment. Impounded
water will
be removed within 72 hours via pumping. Pumped flows will be discharged to the Service Water Settling Pond and via proposed stormwater outfall.
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 individually list all open water impacts below.
4a. 4b.
4c.
4d. 4e.
Open water Name of waterbody
If project will impact a protected riparian buffer, then complete the chart below. If yes, then individually list all buffer impacts
Yes /No
impact number (if applicable)
Type of impact
Waterbody Area of impact (acres)
Permanent (P) or
6a. Project is in which protected basin? ❑ Neuse ❑ Tar - Pamlico ❑ Catawba
type
Temporary (T)
6h. Total Buffer Impacts:
6b. 6c. 6d.
01
Choose one
Choose
O2
Choose one
Choose
03
Choose one
Choose
04
Choose one
Choose
4f. Total open water impacts
4g. Comments:
5. Pond or Lake Construction
If pond or lake construction proposed, then complete the chart below.
5a. 5b. 5c. 5d. 5e.
Pond ID number Proposed use or Wetland Impacts (acres) Stream Impacts (feet) Upland
purpose of pond (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)
Yes /No
B2
Yes /No
If project will impact a protected riparian buffer, then complete the chart below. If yes, then individually list all buffer impacts
Yes /No
below. If any impacts require mitigation, then you MUST fill out Section D of this form.
Yes /No
B5
Yes /No
6a. Project is in which protected basin? ❑ Neuse ❑ Tar - Pamlico ❑ Catawba
❑ Randleman
❑ Other:
6h. Total Buffer Impacts:
6b. 6c. 6d.
6e. 6f.
6g.
Buffer Impact Reason for impact Stream name
Buffer
Zone 1
Zone 2
number —
mitigation
impact
impact
Permanent (P) or
required?
(square
(square
Temporary (T)
feet)
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
1 a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
The project has been designed to avoid significant permanent dredge or fill impacts to wetlands and streams. Impounded water will be removed
within 72 hours via pumping to a settling pond. The proposed action at this location will primarily include minor permanent impacts to intermittent
stream channels and herbaceous /shrubby wetlands.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
Impacts to wetlands and streams will be minimized during pumping activities. Access will be through uplands, via adjacent roadways. Best
Management Practices will be used during pumping activities.
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a. Does the project require Compensatory Mitigation for ❑X Yes ❑ No
impacts to Waters of the U.S. or Waters of the State?
2b. If yes, mitigation is required by (check all that apply): X❑ DWQ ❑X Corps
❑ Mitigation bank
2c. If yes, which mitigation option will be used for this ❑X Payment to in -lieu fee program
project?
❑ Permittee Responsible Mitigation
3. Complete if Using a Mitigation Bank
3a. Name of Mitigation Bank:
Type: Choose one Quantity:
3b. Credits Purchased (attach receipt and letter) Type: Choose one Quantity:
Type: Choose one Quantity:
3c. Comments:
4. Complete if Making a Payment to In -lieu Fee Program
4a. Approval letter from in -lieu fee program is attached. X❑ Yes
4b. Stream mitigation requested: 448 linear feet
4c. If using stream mitigation, stream temperature: warm
4d. Buffer mitigation requested (DWQ only): square feet
4e. Riparian wetland mitigation requested: acres
4f. Non - riparian wetland mitigation requested: 0.41 acres
4g. Coastal (tidal) wetland mitigation requested: acres
4h. Comments: Duke Energy is requesting 1:1 stream mitigation since the proposed stream impacts will be to low quality, intermittent channels.
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 6of10
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 X❑ 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
1 a. Does the project include or is it adjacent to protected riparian buffers identified
within one of the NC Riparian Buffer Protection Rules?
1 b. If yes, then is a diffuse flow plan included? If no, explain why.
2. Stormwater Management Plan
2a. What is the overall percent imperviousness of this project?
❑ Yes ❑X No
❑ Yes ❑X No
1%
2b. Does this project require a Stormwater Manaqement Plan? ❑ Yes ❑X No
2c. If this project DOES NOT require a Stormwater Management Plan, explain why:
The project site meets the low density criteria as specified under DWR Water Quality Certification (WQC) No. 3890; i.e. the project built upon area is
less than 1 %. BMPs have been designed to meet the WQC No. 3890 requirements for low density development. The proposed action will not add
imperious surfaces to the project. As specified by WQC No. 3890, two copies of the DWR Low Density Supplemental Form are attached to this PCN.
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 local government's jurisdiction is this project?
3b. Which of the following locally - implemented stormwater management programs
apply (check all that apply):
3c. Has the approved Stormwater Management Plan with proof of approval been
attached?
4. DWQ Stormwater Program Review
4a. Which of the following state - implemented stormwater management programs apply
(check all that apply):
4b. Has the approved Stormwater Management Plan with proof of approval been
attached?
5. DWQ 401 Unit Stormwater Review
5a. Does the Stormwater Management Plan meet the appropriate requirements?
5b. Have all of the 401 Unit submittal requirements been met?
❑ Phase II
❑ NSW
❑ USMP
❑ Water Supply Watershed
❑ Other:
❑ Yes ❑X No
❑Coastal counties
❑HQW
❑ORW
❑Session Law 2006 -246
❑ Other:
❑ Yes F-1 No
❑ Yes ❑ No
❑X Yes ❑ No
Page 8of10
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 ❑X 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 ❑ Yes ❑ No
(North Carolina) Environmental Policy Act (NEPA/SEPA)?
1c. 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, E] 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 El 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 9of10
PCN Form — Version 1.4 January 2009

5. Endangered Species and Designated Critical Habitat (Corps Requirement)
5a. Will this project occur in or near an area with federally protected species or ❑ Yes ❑X No
habitat?
5b. Have you checked with the USFWS concerning Endangered Species Act ❑X Yes ❑ No
impacts?
5c. If yes, indicate the USFWS Field Office you have contacted. Raleigh
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 (IPaC) interactive website and the NC Natural Heritage Program (NCNHP) Natural Heritage
Database Search interactive website. Amec Foster Wheeler did not identify any federally listed species during the site evaluations in April 2015.
6. Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as essential fish habitat? I ❑ Yes ❑X No
6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat?
NOAA National Marine Fisheries Service - online interactive software "Essential Fish Habitat Mapper v3.0 ".
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 X❑ 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?
NC Dept of Cultural Resources, State Historic Preservation Office (SHPO) interactive website (HPOWEB).
8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA- designated 100 -year floodplain?
8b. If yes, explain how project meets FEMA requirements:
❑ Yes ❑X No
8c. What source(s) did you use to make the floodplain determination?
A graphic exhibit of the 100 -year floodplain for the project vicinity is attached. Source: FEMA/FIRM map numbers 3710798900J, 3710799900J, and
3710709000J, dated July 3, 2007.
Applicant/Agent's Printed Name Applicant /Agent's Signature
(Agent's signature is valid only if an authorization
letter from the applicant is provided.)
Page 10 of 10
Date

I PERMANENT IMPACTS
' I
I Wetland 1 12,420.9 SQ,FT,
�x Wetland 2 5,299.3 SQ.FT,
-° Total 17,720,2 SQ,FT,
xu
b 1 219 FT. � � ,
PROPOSED EXTENTS OF TEMPORARY �� Stream
;
'X X�
IMPOUNDMENT BASED ON 25 -YEAR GP Stream 2 97 FT,
EVENT RUNOFF STORAGE (EL, 524) _ — -- Stream 3 132 FT.
(DEWATER BY PUMPING WITHIN 72 — ^ I Total 448 FT.
HOURS OF RAIN EVENT) i _ __
i
00 , — — \ PROPOSED 4FT x 4FT CONCRETE DROP
INLET SUMP BOTTOM AT ELEV. 506.0
wil RIM AT ADJACENT GRADE
PIPE INVERT FOR PUMP INTAKE 507,0
I �
EXISTING 48 -INCH CORRUGATED
�
�� ` `, � METAL PIPE (CMP) CULVERT HAS
\ I , 01.10'' ', \ BEEN GROUTED, INFLOWS WILL
, ' BE PUMPED TO SECONDARY ASH
�P �I ' '. ; ; o�� BASIN SHORT -TERM AND LATER
TO NEW STORMWATER OUTFALL
\ , , FOLLOWING CLEAN -UP.
PERMANENT ; 1
IMPACTED STREAM 3
i f
I�r
I
{ l \I
APPROXIMATES
EXTENTS OF SUMP
,> �v, �,� I I PLACEMENT
im
yy 0'
EXCAVATION AND
PERMANENT IMPACTED BACKFILL
WETLAND 2
RPPROX, 5,299.3 SQ,FT,i
�I I
IMPACTED OF8,155 �,,,� �
010 /
SQ,FT, OF WETLANDS) PERMANENT , ;
x�.
I /
,� � � 000,
� �� IMPACTED STREAM 2 � '�. I i
LEGEND ; % (APPROX. 97 FT,) I I L �I
EXTENTS OF TEMPORARY
PERMANENT
IMPOUNDMENT PERMANENT y/
,' �, IMPACTED WETLAND 1 / PROJECT BOUNDARY
EXISTING STREAM -- ��� IMPACTED STREAM 1 (APPROX,12 420,9 SQ,FT,� / (APPROX. 109 ACRES)
WETLANDS (APPROX. 219 FT) vs
PROJECT BOUNDARY /
IMPACTED WETLAND / I I I L
��
AREA �........., \ /
P�\o�
000
I I I
FoJ�
/
/
ju DAN RIVER STEAM STATION AUGUST 24, 2015
DUKE ENERGY - CAROLINAS i I 4R -INCH INI FT AREA CI FAN-1IP
6226.14.0004
R
FIGURE 01

53C ,
i
nI
52CH
5151
—,�
r
i
0 20 40
60 80 100 120
140
160 180 200
CONCRETE DROP INLET
4' X 4'X4' DEEP PRECAST
CONCRETE DROP INLET
(SEE NOTE 1)
EXISTING GRADE
NOTES;
1, INSTALL PRECAST CONCRETE DROP INLET AND GRATES IN
ACCORDANCE WITH NCDOT SPECIFICATIONS,
2, DROP INLET DIMENSIONS MAY BE OPTIMIZED FOR FIELD CONDITIONS,
I , i,,, ft U ll�
�O
SECTION
A -A
FMB DAN RIVER STEAD STATION AUGUST N, 2016
xxx DUKE ENERGY - CAROLINAS 48 -INCH INLET AREA CLEAN -UP
I � 6226-14-0004
Amec Fosfec Wheeler Eulimm l & Itsfcucfuce
R; W CM 4"�W14 \9140004 Om k ** "\ WLQd*JWA - FO 02 - 4 A 115 OF - OW
A
CROSS - SECTION VIEW
FIGURE 02

Stream 1 on PCN form and Plan View drawing
NC DWQ Stream Identification Form Version 4.11
Date: B avy e Zr�d ' Project/Site:, Latitude: 34, IqC 6
Evaluator G� � County : Longitude : -'414f 1
Total Points: Stream Deter ircle one Other V_
Stream is at least intermittent Ephemeral intermittent Perennial e.g. Quad Name
if? 19 or perennial if? 30* _
A. Geomorphology (Subtotal = 9 ° f- )
Absent
Weak
Moderate
Strong
1a. Continuity of channel bed and bank
0
2
3
2. Sinuosity of channel along thalweg
0
2
3
3. In- channel structure: ex. riffle -pool, step -pool,
0
2
3
ripple -pool sequence
4. Particle size of stream substrate
0
U)
2
3
5. Active /relict floodplain
01R)
1
2
3
6. Depositional bars or benches
no
1
2
3
7. Recent alluvial deposits
0
(
2
3
8. Headcuts
ro
1
2
3
9. Grade control
0
1
1.5
10. Natural valley
0
0.5
1.5
11. Second or greater order channel
No = 0
11-Ye; 3)
3
a artificial ditches are not rated; see disc ions in manual
B. Hydrology (Subtotal = ,
12. Presence of Baseflow
0
1
2
3
13. Iron oxidizing bacteria
0
1
2
3
14. Leaf litter
1.5
1
0.5
0
15. Sediment on plants or debris
0
1.5
16. Organic debris lines or piles
0
60-9
1
1.5
17. Soil -based evidence of high water table?
No = 0
7s� = -'3"°t
C. Biology (Subtotal = 4.0 )
�`."�'
18. Fibrous roots in streambed
3
2
1
( 0-)
19. Rooted upland plants in streambed
)
2
1
20. Macrobenthos (note diversity and abundance)
1
2
3
21. Aquatic Mollusks
1
2
3
22. Fish
Rv
0.5
1
1.5
23. Crayfish
0.5
1
1.5
24. Amphibians
)
0.5
1
1.5
25. Algae
0
0.5
C1)
1.5
26. Wetland plants in streambed
FACW = 0.75;
OBL = 1.5 Other = 0
*perennial streams may also be identified using other methods, See p. 35 of manual.
Notes:
Sketch:'�i�
�-`P flfl tt r

Stream 2 on PCN form and Plan View drawing
NC DWQ Stream Identification Form Version 4.11
Date: 117 IT04e 20th.
Project/Site:Dko'?,-o-(
I Latitude: ��,�
� �6�j
Evaluator: C�)-
County: '�y� ��•W-
Longitude:° �� • �j
Total Points: G
Stream is at least intermittent
*
Stream Dete '� Li circle one)
Ephemer Intermitten Perennial
Other
e.g, Quad am .
if ? 19 or perennial if ? 30
A. Geomorphology (Subtotal
Absent
Weak
Moderate
Strong
1a' Continuity of channel bed and bank
0 is
(3)
2
3
2. Sinuosity of channel along thalweg
0
(2)
3
3. In- channel structure: ex. riffle -pool, step -pool,
0
2 2
3
ripple -pool sequence
4. Particle size of stream substrate
0
lJ
10
2
3
5. Active /relict floodplain
0
1
3
6. Depositional bars or benches
OC
1
2
3
7. Recent alluvial deposits
0
i 1
2
3
8. Headcuts
0
/
2
3
9. Grade control
(-J)
0.5
1
1.5
10. Natural valley
0 0.5
�
1.5
11. Second or greater order channel
( No
=
Yes =
3
a artificial ditches are not rated; see discussions in manual
Ct, 0
B. Hydrology (Subtotal =
12. Presence of Baseflow
0
�I'�
2
3
13. Iron oxidizing bacteria
0
2
07
14. Leaf litter,
1 _
0.5
` 0°
15. Sediment on plants or debris
(r0.5)
1
1.5
16. Organic debris lines or piles
%
0.5
1 1.5
17. Soil -based evidence of high \later table?
No
= 0
Ye <_
C. Biology (Subtotal =_ <.� )
-- --'�
18. Fibrous roots in streambed
3
2
,-
0
19. Rooted upland plants in streambed
0
2
1
0
20. Macrobenthos (note diversity and abundance)
0
f1
2
3
21. Aquatic Mollusks
1
2
3
22. Fish
0.5
1
1.5
23. Crayfish
0
0.5
1
1.5
24. Amphibians
0
0.5
1
1.5
25. Algae
0
/0.5)
1
1.5
26. Wetland plants in streambed
FAtV7-_=_0.75; OBL
= 1.5 Other = 0
*perennial streams may also be identified using other methods. See p. 35 of manual.
Notes:
Sketch: ,

Stream 3 on PCN form and Plan View drawing
NC DWQ Stream Identification Form Version 4.11
Date: lf" um. Project/Site:' �4 0 �� tad
°� -cs1'S
Evaluator: Count'cK'I�r,.,v.
Total Points: Stream DeteLrrn
inatLaa-Ccircle one)
Stream Is at least lntermlttent Ephemera Intermitten Perennial
if? 19 or perenn/al If z 30' � -
A. Geomorphology (Subtotal = /0, 6 )
Absent Weak
1a' "Continuity of channel bed and bank
0
1�
2. Sinuosity of channel along thalweg
01'>
0
3. In- channel structure: ex. riff le -pool, step -pool,
0
p�S
ripple -pool sequence
23. Crayfish
L%
4. Particle size of stream substrate
0
25. Algae
5. Active /relict floodplaln
6, Depositional bars or benches
C")
0
11
t '�
7. Recent alluvial deposits
0n
8. Headcuts
0
(1)
9, Grade control
0
0.5
10. Natural valley
0
0,5
11. Second or greaterorder channel
�._
0 0
a artificial ditches are. not rated; see discussions in manual
B. Hydrology (Subtotal = _
12. Presence of Baseflow
0.
13. Iron oxidizing bacteria
0
1
14. leaf litter
1.5
1
15, Sediment on plants or debris
0
16. Organic debris lines or piles
0
7.5
17 Soil -based evidence of high water table?
No = 0'
C. Biology (Subtotal,_t1 ?__�)
18. Fibrous roots in streambed
3
19. Rooted upland plants in streambed
(' 3)
20, Maerobenthos (note diversity and abundance)
0
21, Aquatic Mollusks
(d)
22, Fish
0
23. Crayfish
24. Amphibians
0
25. Algae
0
26, Wetland plants in streambed
*perennial streams may also be identified using other methods. See p. 35 of manual.
Notes;
Sketch:
——�
Latitude: 3 6 q10
Longitude: — ?I <%i ASS
Other * ?Ee "C.
e.g. Quad Name:
Moderate
2
2
2
2
2
2
Yes = 3
2
C o�
Yes
;2 1
i� 2
1 2
0.5 1
0.5 1
FACE= 0.75; OBL = 1.5 Other = 0
Strong
3.
3
3
3
0
1.5
1.5
0
0
3
3
1.5
1.5
1,5
1,5

Stream Reach 1
NC SAM FIELD ASSESSMENT FORM
Accompanies User Manual Version 2
Rating Calculator Version 2
USACE AID #: NCDWR #:
INSTRUCTIONS: Attach a sketch of the assessment area and photographs. Attach a copy of the USGS 7.5- minute topographic
quadrangle, and circle the location of the stream reach under evaluation. If multiple stream reaches will be evaluated on the same
property, identify and number all reaches on the attached map, and include a separate form for each reach. See the NC SAM User
Manual for detailed descriptions and explanations of requested information. Record in the "Notes /Sketch" section if any supplementary
measurements were performed. See the NC SAM User Manual for examples of additional measurements that may be relevant.
NOTE EVIDENCE OF STRESSORS AFFECTING THE ASSESSMENT AREA (do not need to be within the assessment area).
PROJECT / SITE INFORMATION:
1. Project name (if any): Dan River Steam Station 2. Date of evaluation: 6 -17 -2015
3. Applicant/owner name: Duke Energy 4. Assessor name /organization: Amec Foster Wheeler
5. County: Rockingham 6. Nearest named water body
7. River Basin: Roanoke on USGS 7.5- minute quad: Dan River
8. Site coordinates (decimal degrees, at lower end of assessment reach): 36.4900, - 79.7179
STREAM INFORMATION: (depth and width can be approximations)
9. Site number (show on attached map): Stream Reach 1 10. Length of assessment reach evaluated (feet): 50
11. Channel depth from bed (in riffle, if present) to top of bank (feet): 1 Foot F- Unable to assess channel depth.
12. Channel width at top of bank (feet): 2 -3 Feet '1•3, is assessment reach a sv amp stream? Eyes U No
14. Feature type: C Perennial flow C. Intermittent flow ETidal Marsh Stream
STREAM RATING INFORMATION:
15. NC SAM Zone: CMountains (M) Piedmont (P) CInner Coastal Plain (I) COuter Coastal Plain (0)
16. Estimated geomorphic k f \111_�
valley shape (skip for Ca .fib
Tidal Marsh Stream): (more sinuous stream, flatter valley slope) (less sinuous stream, steeper valley slope)
17. Watershed size: (skip [ESize 1 (< 0.1 mi`) CSize 2 (0.1 to < 0.5 mi`) CSize 3 (0.5 to < 5 mi`) CSize 4 (> 5 mi)
for Tidal Marsh Stream)
ADDITIONAL INFORMATION:
18. Were regulatory considerations evaluated? CYes�. No If Yes, check all that appy to the assessment area.
Section 10 water I- Classified Trout Waters I Water Supply Watershed ( CI Ell EIII CIV CV)
[ Essential Fish Habitat F- Primary Nursery Area ( High Quality Waters /Outstanding Resource Waters
j® Publicly owned property I- NCDWR riparian buffer rule in effect [- Nutrient Sensitive Waters
[ Anadromous fish F- 303(d) List F- CAMA Area of Environmental Concern (AEC)
( Documented presence of a federal and /or state listed protected species within the assessment area.
List species:
(® Designated Critical Habitat (list species):
19. Are additional stream information /supplementary measurements included in "Notes /Sketch" section or attached? r:1Yes "No
1. Channel Water - assessment reach metric (skip for Size 1 streams and Tidal Marsh Streams)
CA Water throughout assessment reach.
EB No flow, water in pools only.
CC No water in assessment reach.
2. Evidence of Flow Restriction - assessment reach metric
EA At least 10% of assessment reach in- stream habitat or riffle -pool sequence is adversely affected by a flow restriction or fill to the
point of obstructing flow or a channel choked with aquatic macrophytes or ponded water or impounded on flood or ebb within
the assessment reach (examples: undersized or perched culverts, causeways that constrict the channel, tidal gates).
CB Not A
3. Feature Pattern - assessment reach metric
EA A majority of the assessment reach has altered pattern (examples: straightening, modification above or below culvert).
C B Not A.
4. Feature Longitudinal Profile- assessment reach metric
EA Majority of assessment reach has a substantially altered stream profile (examples: channel down - cutting, existing damming,
over widening, active aggradation, dredging, and excavation where appropriate channel profile has not reformed from any of
these disturbances).
B Not A
5. Signs of Active Instability - assessment reach metric
Consider only current instability, not past events from which the stream has currently recovered. Examples of instability include
active bank failure, active channel down - cutting (head -cut), active widening, and artificial hardening (such as concrete, gabion, rip -rap).
CA < 10% of channel unstable
EB 10 to 25% of channel unstable
CC > 25% of channel unstable
6. Streamside Area Interaction - streamside area metric
Consider for the Left Bank (LB) and the Right Bank (RB).
LB RB
P'A EA Little or no evidence of conditions that adversely affect reference interaction
.EB U. B Moderate evidence of conditions (examples: berms, levees, down - cutting, aggradation, dredging) that adversely affect
reference interaction (examples: limited streamside area access, disruption of flood flows through streamside area,
leaky or intermittent bulkheads, causeways with floodplain constriction, minor ditching [including mosquito ditching])

C ®C Extensive evidence of conditions that adversely affect reference interaction (little to no floodplain /intertidal zone access
[examples: causeways with floodplain and channel constriction, bulkheads, retaining walls, fill, stream incision,
disruption of flood flows through streamside area] or too much floodplain /intertidal zone access [examples:
impoundments, intensive mosquito ditching]) or floodplain /intertidal zone unnaturally absent or assessment reach is a
man -made feature on an interstream divide
7. Water Quality Stressors - assessment reach /intertidal zone metric
Check all that apply.
( A Discolored water in stream or intertidal zone (milky white, blue, unnatural water discoloration, oil sheen, stream foam)
B Excessive sedimentation (burying of stream features or intertidal zone)
F- C Noticeable evidence of pollutant discharges entering the assessment reach and causing a water quality problem
C— D Odor (not including natural sulfide odors)
Fa E Current published or collected data indicating degraded water quality in the assessment reach. Cite source in the "Notes /Sketch"
section.
(- F Livestock with access to stream or intertidal zone
C— G Excessive algae in stream or intertidal zone
('m H Degraded marsh vegetation in the intertidal zone (removal, burning, regular mowing, destruction, etc.)
F I Other: (explain in "Notes /Sketch" section)
f-° J Little to no stressors
8. Recent Weather- watershed metric
For Size 1 or 2 streams, D1 drought or higher is considered a drought; for Size 3 or 4 streams, D2 drought or higher is considered a
drought.
EA Drought conditions and no rainfall or rainfall not exceeding 1 inch within the last 48 hours
CB Drought conditions and rainfall exceeding 1 inch within the last 48 hours
EC No drought conditions
9 Large or Dangerous Stream - assessment reach metric
'Yes
E. No Is stream is too large or dangerous to assess? If Yes, skip to Metric 13 ( Streamside Area Ground Surface Condition).
10. Natural In- stream Habitat Types - assessment reach metric
10a. Co Yes CNo Degraded in- stream habitat over majority of the assessment reach (examples of stressors include excessive
sedimentation, mining, excavation, in- stream hardening [for example, rip -rap], recent dredging, and snagging)
(evaluate for size 4 Coastal Plain streams only, then skip to Metric 12)
10b. Check all that occur (occurs if > 5% coverage of assessment reach) (skip for Size 4 Coastal Plain streams)
F- A Multiple aquatic macroplhytes and aquatic mosses -Fa E F- F 5% oysters or other natural hard bottoms
(include livery arts, lichens, and algal mats m (- G Submerged aquatic vegetation
[ B Multiple sticks and /or leaf packs and /or emergent w � 2, H Low -tide refugia (pools)
vegetation Y t o F I Sand bottom
(— C Multiple snags and logs (including lap tree F J 5% vertical bank along the marsh
(� D 5% undercut banks and /or root mats and /or roots 02 F- K Little or no habitat
in banks extend to the normal wetted perimeter
Fv E Little or no habitat
*"""""""""" """""""""""""""" --- REMAINING QUESTIONS ARE NOT APPLICABLE FOR TIDAL MARSH STREAMS *"""""""""""""""""""""" --
11. Bedform and Substrate -assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)
11 a. CYes ENo Is assessment reach in a natural sand -bed stream? (skip for Coastal Plain streams)
11 b. Bedform evaluated. Check the appropriate box(es).
F A Riffle -run section (evaluate 11c)
I B Pool -glide section (evaluate 11 d)
F- C Natural bedform absent (skip to Metric 12, Aquatic Life)
•'• c in r1 lei
sectiona, cI "ieck all tI °rat occur below tI °ie norm, aI wetted perimeter & tI °ie assessmen't react °i - c lYeti °ier or not subr erged
Check
at least one
sox in each rcw
(.slop for Size 4 Coastal Plain Streams and 'Tidal Marsh Streams). Not = resent (NP =
absent..
Rare
(R = present
but
5 .0 %%
Common (C _ - .0 -40 %.. Abundant A _ - 40 -70% Predominant (P = > 70% Cumulative
percentages
should
not exceed
'1.00%
°or each assessment reach.
Bedrock /'sa pro lite
Boulder ,",256 - 4096 m, ,
Cobble (64 - 256 mrm ,
Gr.vel (2 - 64 m,
Sand( 062 - 2 mrm ,
.
.
J
.
.
Siluclay ( 0.062 .mm
Detritus
Artificial (rip -rap.. concrete.. etc.;
11 d. L]Yes
Lo] No
Are pools
filled with sediment? (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)
12. Aquatic Life - assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)
12a. Co Yes CNo Was an in- stream aquatic life assessment performed as described in the User Manual?
If No, select one of the following reasons and skip to Metric 13. ENo Water COther:
12b. [e]Yes [] No Are aquatic organisms present in the assessment reach (look in riffles, pools, then snags)? If Yes, check
all that apply. If No, skip to Metric 13.
1 >1 Numbers over columns refer to "individuals" for size 1 and 2 streams and "taxa" for size 3 and 4 streams.
— j— Adult frogs
F I— Aquatic reptiles

F F- Aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats)
F F- Beetles (including water pennies)
F F- Caddisfly larvae (Trichoptera [T])
F j- Asian clam (Corbicula )
F F- Crustacean (iso pod/am phipod /crayfish /sh rim p)
F j- Damselfly and dragonfly larvae
F F- Dipterans (true flies)
F j- Mayfly larvae (Ephemeroptera [E])
F F- Megaloptera (alderfly, fishfly, dobsonfly larvae)
F jv Midges /mosquito larvae
[- F Mosquito fish (Gambusia) or mud minnows (Umbra pygmaea)
F F Mussels /Clams (not Corbicula)
[- F Other fish
F F Salamanders /tadpoles
F F- Snails
[-" i Stonefly larvae (Plecoptera [P])
F F Tipulid larvae
[-" i Worms /leeches
13. Streamside Area Ground Surface Condition - streamside area metric (skip for Tidal Marsh Streams and B valley types)
Consider for the Left Bank (LB) and the Right Bank (RB). Consider storage capacity with regard to both overbank flow and
upland runoff.
LB RB
CA CA Little or no alteration to water storage capacity over a majority of the streamside area
PB C8 Moderate alteration to water storage capacity over a majority of the streamside area
cc cc Severe alteration to water storage capacity over a majority of the streamside area (examples include: ditches, fill,
soil, compaction, livestock disturbance, buildings, man -made levees, drainage pipes)
14. Streamside Area Water Storage - streamside area metric (skip for Size 1 streams, Tidal Marsh Streams, and B valley types)
Consider for the Left Bank (LB) and the Right Bank (RB) of the streamside area.
LB RB
CA CA Majority of streamside area with depressions able to pond water >_ 6 inches deep
EB E Majority of streamside area with depressions able to pond water 3 to 6 inches deep
CC CC Majority of streamside area with depressions able to pond water < 3 inches deep
15. Wetland Presence - streamside area metric (skip for Tidal Marsh Streams)
Consider for the Left Bank (LB) and the Right Bank (RB). Do not consider wetlands outside of the streamside area or within the
normal wetted perimeter of assessment reach.
LB RB
.EY E;Y Are wetlands present in the streamside area?
P, N EN
16. Baseflow Contributors - assessment reach metric (skip for size 4 streams and Tidal Marsh Streams)
Check all contributors within the assessment reach or within view of and draining to the assessment reach.
[V A Streams and /or springs (jurisdictional discharges)
1-8 Ponds (include wet detention basins; do not include sediment basins or dry detention basins)
C Obstruction that passes some flow during low -flow periods within assessment area (beaver dam, bottom - release dam)
D Evidence of bank seepage or sweating (iron oxidizing bacteria in water indicates seepage)
E Stream bed or bank soil reduced (dig through deposited sediment if present)
I- F None of the above
17. Baseflow Detractors - assessment area metric (skip for Tidal Marsh Streams)
Check all that apply.
( A Evidence of substantial water withdrawals from the assessment reach (includes areas excavated for pump installation)
B Obstruction not passing flow during low flow periods affecting the assessment reach (ex: watertight dam, sediment deposit)
(` C Urban stream (? 24% impervious surface for watershed)
D Evidence that the stream -side area has been modified resulting in accelerated drainage into the assessment reach
( E Assessment reach relocated to valley edge
F None of the above
18. Shading - assessment reach metric (skip for Tidal Marsh Streams)
Consider aspect. Consider "leaf -on" condition.
CA Stream shading is appropriate for stream category (may include gaps associated with natural processes)
PB Degraded (example: scattered trees)
.EC Stream shading is gone or largely absent
19. Buffer Width - streamside area metric (skip for Tidal Marsh Streams)
Consider "vegetated buffer" and "wooded buffer" separately for left bank (LB) and right bank (RB) starting at the top
of bank out to the first break.
Vegetated Wooded
LB RB LB RB
CA CA CA CA ? 100 -feet wide or extends to the edge of the watershed
CB CB CB CB From 50 to < 100 -feet wide
EC F:C F_ C CC From 30 to < 50 -feet wide
CD CD CD ED From 10 to < 30 -feet wide
CE CE CE CE < 10 -feet wide or no trees
20. Buffer Structure - streamside area metric (skip for Tidal Marsh Streams)
Consider for left bank (LB) and right bank (RB) for Metric 19 ( "Vegetated" Buffer Width).

LB RB
P, A CA Mature forest
CB CB Non - mature woody vegetation or modified vegetation structure
EC Ce C Herbaceous vegetation with or without a strip of trees < 10 feet wide
ED ED Maintained shrubs
CE CE Little or no vegetation
21. Buffer Stressors — streamside area metric (skip for Tidal Marsh Streams)
Check all appropriate boxes for left bank (LB) and right bank (RB). Indicate if listed stressor abuts stream (Abuts), does not abut but
is within 30 feet of stream (< 30 feet), or is between 30 to 50 feet of stream (30 -50 feet).
If none of the following stressors occurs on either bank, check here and skip to Metric 22: F
Abuts < 30 feet 30 -50 feet
LB RB LB RB LB RB
L]A CA CA CA CA CA Row crops
EB CB CB EB EB [a] B Maintained turf
L]C cc CC cc cc CC Pasture (no livestock) /commercial horticulture
ED ED ED ED ED ED Pasture (active livestock use)
22. Stem Density — streamside area metric (skip for Tidal Marsh Streams)
Consider for left bank (LB) and right bank (RB) for Metric 19 ( "Wooded" Buffer Width).
LB RB
L]A CA Medium to high stem density
P, B EB Low stem density
EC E. C No wooded riparian buffer or predominantly herbaceous species or bare ground
23. Continuity of Vegetated Buffer — streamside area metric (skip for Tidal Marsh Streams)
Consider whether vegetated buffer is continuous along stream (parallel). Breaks are areas lacking vegetation > 10 -feet wide.
LB RB
EA EA The total length of buffer breaks is < 25 percent.
UB UB The total length of buffer breaks is between 25 and 50 percent.
CC CC The total length of buffer breaks is > 50 percent.
24. Vegetative Composition — First 100 feet of streamside area metric (skip for Tidal Marsh Streams)
Evaluate the dominant vegetation within 100 feet of each bank or to the edge of the watershed (whichever comes first) as it contributes
to assessment reach habitat.
LB RB
CA CA Vegetation is close to undisturbed in species present and their proportions. Lower strata composed of native
species, with non - native invasive species absent or sparse.
.EB C. B Vegetation indicates disturbance in terms of species diversity or proportions, but is still largely composed of native
species. This may include communities of weedy native species that develop after clear- cutting or clearing or
communities with non - native invasive species present, but not dominant, over a large portion of the expected strata or
communities missing understory but retaining canopy trees.
U CC Vegetation is severely disturbed in terms of species diversity or proportions. Mature canopy is absent or communities
with non - native invasive species dominant over a large portion of expected strata or communities composed of planted
stands of non - characteristic species or communities inappropriately composed of a single species or no vegetation.
25. Conductivity — assessment reach metric (skip for all Coastal Plain streams)
25a. CYes F. Was a conductivity measurement recorded?
If No, select one of the following reasons. CNo Water Other:
glib. Check the box corresponding to the conductivity measurement (units 0 microsiernens per centimeter;.
F,A <46 CB 46 to ' u'" �' C u'" to < 7 �' � 79 to < 230 E E 230
Notes /Sketch:

Stream Reach 1
Stream Site Name Dan River Steam Station
Stream Category Pb1
Draft NC SAM Stream Rating Sheet
Accompanies User Manual Version 1
Rating Calculator Version 1
Date of Evaluation 6 -17 -2015
Assessor Name /Organization Amec Foster Wheeler
Notes of Field Assessment Form (Y /N) NO
Presence of regulatory considerations (Y /N) NO
Additional stream information /supplementary measurements included (Y /N) YES
NC SAM feature type (perennial, intermittent, Tidal Marsh Stream) Intermittent
USACE/
NCDWR
Function Class Rating Summary
All Streams
Intermittent
(1) Hydrology
(2) Baseflow
MEDIUM
MEDIUM
(2) Flood Flow
(3) Streamside Area Attenuation
(4) Floodplain Access
MEDIUM
MEDIUM
(4) Wooded Riparian Buffer
(4) Microtopography
NA
NA
(3) Stream Stability
MEDIUM
MEDIUM
(4) Channel Stability
MEDIUM
MEDIUM
(4) Sediment Transport
HIGH
HIGH
(4) Stream Geomorphology
LOW
LOW
(2) Stream /Intertidal Zone Interaction
NA
NA
(2) Longitudinal Tidal Flow
NA
NA
(2) Tidal Marsh Stream Stability
NA
NA
(3) Tidal Marsh Channel Stability
NA
NA
(3) Tidal Marsh Stream Geomorphology
NA
NA
(1) Water Quality
LOW
LOW
(2) Baseflow
MEDIUM
MEDIUM
(2) Streamside Area Vegetation
MEDIUM
MEDIUM
(3) Upland Pollutant Filtration
HIGH
HIGH
(3) Thermoregulation
LOW
LOW
(2) Indicators of Stressors
NO
NO
(2) Aquatic Life Tolerance
LOW
NA
(2) Intertidal Zone Filtration
NA
NA
(1) Habitat
LOW
(2) In- stream Habitat
MEDIUM
MEDIUM
(3) Baseflow
MEDIUM
MEDIUM
(3) Substrate
HIGH
HIGH
(3) Stream Stability
MEDIUM
MEDIUM
(3) In- stream Habitat
LOW
LOW
(2) Stream -side Habitat
(3) Stream -side Habitat
(3) Thermoregulation
LOW
LOW
(2) Tidal Marsh In- stream Habitat
NA
NA
(3) Flow Restriction
NA
NA
(3) Tidal Marsh Stream Stability
NA
NA
(4) Tidal Marsh Channel Stability
NA
NA
(4) Tidal Marsh Stream Geomorphology
NA
NA
(3) Tidal Marsh In- stream Habitat
NA
NA
(2) Intertidal Zone Habitat
NA
NA
Overall
LOW

Stream Reach 2
NC SAM FIELD ASSESSMENT FORM
Accompanies User Manual Version 2
Rating Calculator Version 2
USACE AID #: NCDWR #:
INSTRUCTIONS: Attach a sketch of the assessment area and photographs. Attach a copy of the USGS 7.5- minute topographic
quadrangle, and circle the location of the stream reach under evaluation. If multiple stream reaches will be evaluated on the same
property, identify and number all reaches on the attached map, and include a separate form for each reach. See the NC SAM User
Manual for detailed descriptions and explanations of requested information. Record in the "Notes /Sketch" section if any supplementary
measurements were performed. See the NC SAM User Manual for examples of additional measurements that may be relevant.
NOTE EVIDENCE OF STRESSORS AFFECTING THE ASSESSMENT AREA (do not need to be within the assessment area).
PROJECT / SITE INFORMATION:
1. Project name (if any): Dan River Steam Station 2. Date of evaluation: 6 -17 -2015
3. Applicant/owner name: Duke Energy 4. Assessor name /organization: Amec Foster Wheeler
5. County: Rockingham 6. Nearest named water body
7. River Basin: Roanoke on USGS 7.5- minute quad: Dan River
8. Site coordinates (decimal degrees, at lower end of assessment reach): 36.4903, - 79.4903
STREAM INFORMATION: (depth and width can be approximations)
9. Site number (show on attached map): Stream Reach 2 10. Length of assessment reach evaluated (feet): 50
11. Channel depth from bed (in riffle, if present) to top of bank (feet): 1 Foot F- Unable to assess channel depth.
12. Channel width at top of bank (feet): 2 -3 Feet '1•3, is assessment reach a sv amp stream? cYes CNN
14. Feature type: Perennial flow F. Intermittent flow FTidal Marsh Stream
STREAM RATING INFORMATION:
15. NC SAM Zone: []Mountains (M) Piedmont (P) []Inner Coastal Plain (I) []Outer Coastal Plain (0)
16. Estimated geomorphic
valley shape (skip for Ca ` C. b
Tidal Marsh Stream): (more sinuous stream, flatter valley slope) (less sinuous stream, steeper valley slope)
17. Watershed size: (skip CSize 1 (< 0.1 mi`) CSize 2 (0.1 to < 0.5 mi`) L]Size 3 (0.5 to < 5 mi`) L]Size 4 (> 5 mi)
for Tidal Marsh Stream)
ADDITIONAL INFORMATION:
18. Were regulatory considerations evaluated? CYes Co No If Yes, check all that appy to the assessment area.
f- Section 10 water I- Classified Trout Waters I- Water Supply Watershed ( L:I E]II EIII []IV PV)
F- Essential Fish Habitat F- Primary Nursery Area F- High Quality Waters /Outstanding Resource Waters
[® Publicly owned property F- NCDWR riparian buffer rule in effect r Nutrient Sensitive Waters
F- Anadromous fish F- 303(d) List F- CAMA Area of Environmental Concern (AEC)
F- Documented presence of a federal and /or state listed protected species within the assessment area.
List species:
(® Designated Critical Habitat (list species):
19. Are additional stream information /supplementary measurements included in "Notes /Sketch" section or attached? U:'Yes r 1No
1. Channel Water - assessment reach metric (skip for Size 1 streams and Tidal Marsh Streams)
[]A Water throughout assessment reach.
rB No flow, water in pools only.
C]C No water in assessment reach.
2. Evidence of Flow Restriction - assessment reach metric
. A
At least 10% of assessment reach in- stream habitat or riffle -pool sequence is adversely affected by a flow restriction or fill to the
point of obstructing flow or a channel choked with aquatic macrophytes or ponded water or impounded on flood or ebb within
the assessment reach (examples: undersized or perched culverts, causeways that constrict the channel, tidal gates).
[]B
Not A
3. Feature
Pattern - assessment reach metric
[o] A
A majority of the assessment reach has altered pattern (examples: straightening, modification above or below culvert).
[]B
Not A.
4. Feature
Longitudinal Profile - assessment reach metric
[o] A
Majority of assessment reach has a substantially altered stream profile (examples: channel down - cutting, existing damming,
over widening, active aggradation, dredging, and excavation where appropriate channel profile has not reformed from any of
these disturbances).
B
Not A
5. Signs
of Active Instability - assessment reach metric
Consider
only current instability, not past events from which the stream has currently recovered. Examples of instability include
active
bank failure, active channel down - cutting (head -cut), active widening, and artificial hardening (such as concrete, gabion, rip -rap).
[]A
< 10% of channel unstable
rB
10 to 25% of channel unstable
rC
> 25% of channel unstable
6. Streamside Area Interaction - streamside area metric
Consider
for the Left Bank (LB) and the Right Bank (RB).
LB
RB
r'A
P'A Little or no evidence of conditions that adversely affect reference interaction
. B
.E'B Moderate evidence of conditions (examples: berms, levees, down - cutting, aggradation, dredging) that adversely affect
reference interaction (examples: limited streamside area access, disruption of flood flows through streamside area,
leaky or intermittent bulkheads, causeways with floodplain constriction, minor ditching [including mosquito ditching])
C]C
CC Extensive evidence of conditions that adversely affect reference interaction (little to no floodplain /intertidal zone access
[examples: causeways with floodplain and channel constriction, bulkheads, retaining walls, fill, stream incision,

disruption of flood flows through streamside area] or too much floodplain /intertidal zone access [examples:
impoundments, intensive mosquito ditching]) or floodplain /intertidal zone unnaturally absent or assessment reach is a
man -made feature on an interstream divide
7. Water Quality Stressors - assessment reach /intertidal zone metric
Check all that apply.
( A Discolored water in stream or intertidal zone (milky white, blue, unnatural water discoloration, oil sheen, stream foam)
B Excessive sedimentation (burying of stream features or intertidal zone)
( C Noticeable evidence of pollutant discharges entering the assessment reach and causing a water quality problem
D Odor (not including natural sulfide odors)
Fa E Current published or collected data indicating degraded water quality in the assessment reach. Cite source in the "Notes /Sketch"
section.
F- F Livestock with access to stream or intertidal zone
F- G Excessive algae in stream or intertidal zone
(- H Degraded marsh vegetation in the intertidal zone (removal, burning, regular mowing, destruction, etc.)
F I Other: (explain in "Notes /Sketch" section)
F- J Little to no stressors
8. Recent Weather - watershed metric
For Size 1 or 2 streams, D1 drought or higher is considered a drought; for Size 3 or 4 streams, D2 drought or higher is considered a
drought.
g" A Drought conditions and no rainfall or rainfall not exceeding 1 inch within the last 48 hours
t" B Drought conditions and rainfall exceeding 1 inch within the last 48 hours
Ys C No drought conditions
9 Large or Dangerous Stream - assessment reach metric
rYes Es Is stream is too large or dangerous to assess? If Yes, skip to Metric 13 ( Streamside Area Ground Surface Condition).
10. Natural In- stream Habitat Types -assessment reach metric
18a. 4 Yes ENo Degraded in- stream habitat over majority of the assessment reach (examples of stressors include excessive
sedimentation, mining, excavation, in- stream hardening [for example, rip -rap], recent dredging, and snagging)
(evaluate for size 4 Coastal Plain streams only, then skip to Metric 12)
1 Ob. Check all that occur (occurs if > 5% coverage of assessment reach) (skip for Size 4 Coastal Plain streams)
I" A
Multiple aquatic macroplhytes and aquatic mosses
-Fa E F F
5% oysters or other natural hard bottoms
one
(include livery arts, lichens, and algal mats
o F G
Submerged aquatic vegetation
I" B
Multiple sticks and /or leaf packs and /or emergent
w � 2, H
Low -tide refugia (pools)
percentages
Vegetation
Y t o ( 1
Sand bottom
I" C
Multiple snags and logs (including lap tree
r J
5% vertical bank along the marsh
R" D
5% undercut banks and /or root mats and /or roots
O F- K
Little or no habitat
In banks extend to the normal wetted perimeter
(w E
Little or no habitat
******** *** """""""""""""""" --- REMAINING QUESTIONS ARE NOT
APPLICABLE FOR
TIDAL MARSH STREAMS *"""""""""""""""""""""" --
11. Bedform and Substrate -assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)
11 a. r Yes ENo Is assessment reach in a natural sand -bed stream? (skip for Coastal Plain streams)
11 b. Bedform evaluated. Check the appropriate box(es).
i- A Riffle -run section (evaluate 11c)
j:+ B Pool -glide section (evaluate 11 d)
i- C Natural bedform absent (skip to Metric 12, Aquatic Life)
11c. In riffiles
sections. check all that occur beloc the normal wetted perimeter & the assessment reachr - cdiethrer or not submerged.
Check
at least
one
sox in each rcw (.slop for Size 4 Coastal Plain Streams and 'Tidal Marsh Streams). Not = recent (NP =
absent,
:Rare
R" = present
but
5 10%%
Common ,C: = > 10 -40 %. ,Abundant ,Al => 40 -. 0% Predominant ( "j = > . 0% Cur "k"•4l a'tl`de
percentages
should
not exceed
'1.00%
°or each assessment reach.
NP
R
C
A
P
IBed roc k /'sa pro l l'te
�i
Boulder ,",256 - 4096 m, ,
Cobble X64 - 256 mrm ,
®
GraveU2 - 64 m,
Sand , 062 - 2 mrm ,
Siluclay , 0.062 ,mrn
Detritus
Artificial ,rip -rap.. concrete.. etc.;
11 d. EYes
CeNo
Are pools filled with sediment? (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)
12. Aquatic Life - assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)
12a. re- ° Yes ®No Was an in- stream aquatic life assessment performed as described in the User Manual?
If No, select one of the following reasons and skip to Metric 13. []No Water []Other:
12b. re- ° Yes CNo Are aquatic organisms present in the assessment reach (look in riffles, pools, then snags)? If Yes, check
all that apply. If No, skip to Metric 13.
1 >1 Numbers over columns refer to "individuals" for size 1 and 2 streams and "taxa" for size 3 and 4 streams.
F F- Adult frogs
F F- Aquatic reptiles
(- F- Aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats)
F F- Beetles (including water pennies)
F F- Caddisfly larvae (Trichoptera [T])
I-° F- Asian clam (Corbicula )

F F- Crustacean (iso pod/am phipod /crayfish /sh rim p)
F F- Damselfly and dragonfly larvae
F F- Dipterans (true flies)
F F- Mayfly larvae (Ephemeroptera [E])
F F- Megaloptera (alderfly, fishfly, dobsonfly larvae)
[-" Fo Midges /mosquito larvae
F F Mosquito fish (Gambusia) or mud minnows (Umbra pygmaea)
F F- Mussels /Clams (not Corbicula )
F- F- Other fish
[-- F- Salamanders /tadpoles
F- F- Snails
F- [-- Stonefly larvae (Plecoptera [P])
F- F- Tipulid larvae
F- [-- Worms /leeches
13. Streamside Area Ground Surface Condition - streamside area metric (skip for Tidal Marsh Streams and B valley types)
Consider for the Left Bank (LB) and the Right Bank (RB). Consider storage capacity with regard to both overbank flow and
upland runoff.
LB RB
CA CA Little or no alteration to water storage capacity over a majority of the streamside area
CB 1:]B Moderate alteration to water storage capacity over a majority of the streamside area
r r Severe alteration to water storage capacity over a majority of the streamside area (examples include: ditches, fill,
soil, compaction, livestock disturbance, buildings, man -made levees, drainage pipes)
14. Streamside Area Water Storage - streamside area metric (skip for Size 1 streams, Tidal Marsh Streams, and B valley types)
Consider for the Left Bank (LB) and the Right Bank (RB) of the streamside area.
LB RB
CA CA Majority of streamside area with depressions able to pond water >_ 6 inches deep
F, B CB Majority of streamside area with depressions able to pond water 3 to 6 inches deep
CC EC Majority of streamside area with depressions able to pond water < 3 inches deep
15. Wetland Presence - streamside area metric (skip for Tidal Marsh Streams)
Consider for the Left Bank (LB) and the Right Bank (RB). Do not consider wetlands outside of the streamside area or within the
normal wetted perimeter of assessment reach.
LB RB
r_e Y E Are wetlands present in the streamside area?
rN rN
16. Baseflow Contributors - assessment reach metric (skip for size 4 streams and Tidal Marsh Streams)
Check all contributors within the assessment reach or within view of and draining to the assessment reach.
IV A Streams and /or springs (jurisdictional discharges)
F- B Ponds (include wet detention basins; do not include sediment basins or dry detention basins)
F- C Obstruction that passes some flow during low -flow periods within assessment area (beaver dam, bottom - release dam)
F- D Evidence of bank seepage or sweating (iron oxidizing bacteria in water indicates seepage)
[V E Stream bed or bank soil reduced (dig through deposited sediment if present)
F- F None of the above
17. Baseflow Detractors - assessment area metric (skip for Tidal Marsh Streams)
Check all that apply.
F- Evidence of substantial water withdrawals from the assessment reach (includes areas excavated for pump installation)
F- B Obstruction not passing flow during low flow periods affecting the assessment reach (ex: watertight dam, sediment deposit)
F- C Urban stream (? 24% impervious surface for watershed)
IV D Evidence that the stream -side area has been modified resulting in accelerated drainage into the assessment reach
[ -- E Assessment reach relocated to valley edge
F- F None of the above
18. Shading - assessment reach metric (skip for Tidal Marsh Streams)
Consider aspect. Consider "leaf -on" condition.
CA Stream shading is appropriate for stream category (may include gaps associated with natural processes)
CB Degraded (example: scattered trees)
rC Stream shading is gone or largely absent
19. Buffer Width - streamside area metric (skip for Tidal Marsh Streams)
Consider "vegetated buffer" and "wooded buffer" separately for left bank (LB) and right bank (RB) starting at the top
of bank out to the first break.
Vegetated Wooded
LB RB LB RB
CA CA CA CA ? 100 -feet wide or extends to the edge of the watershed
C8 C8 ®B C8 From 50 to < 100 -feet wide
rC P, C CC CC From 30 to < 50 -feet wide
CD CD ®D CD From 10 to < 30 -feet wide
r_ E CE CIE CE < 10 -feet wide or no trees
20. Buffer Structure - streamside area metric (skip for Tidal Marsh Streams)
Consider for left bank (LB) and right bank (RB) for Metric 19 ( "Vegetated" Buffer Width).
LB
RB
CA
CA
Mature forest
rB
CB
Non - mature woody vegetation or modified vegetation structure
[6] C
CC
Herbaceous vegetation with or without a strip of trees < 10 feet wide
r_ D
CD
Maintained shrubs
CE
CE
Little or no vegetation

21. Buffer Stressors — streamside area metric (skip for Tidal Marsh Streams)
Check all appropriate boxes for left bank (LB) and right bank (RB). Indicate if listed stressor abuts stream (Abuts), does not abut but
is within 30 feet of stream (< 30 feet), or is between 30 to 50 feet of stream (30 -50 feet).
If none of the following stressors occurs on either bank, check here and skip to Metric 22: F
Abuts < 30 feet 30 -50 feet
LB RB LB RB LB RB
CA CA CA CA CA CA Row crops
F, B CB UB UB CB CB Maintained turf
CC PC CC CC CC PC Pasture (no livestock) /commercial horticulture
F, D CD CD ED ED ED Pasture (active livestock use)
22. Stem Density — streamside area metric (skip for Tidal Marsh Streams)
Consider for left bank (LB) and right bank (RB) for Metric 19 ( "Wooded" Buffer Width).
LB RB
CA CA Medium to high stem density
EB CB Low stem density
C. C C. C No wooded riparian buffer or predominantly herbaceous species or bare ground
23. Continuity of Vegetated Buffer — streamside area metric (skip for Tidal Marsh Streams)
Consider whether vegetated buffer is continuous along stream (parallel). Breaks are areas lacking vegetation > 10 -feet wide.
LB RB
FA CA The total length of buffer breaks is < 25 percent.
CB CB The total length of buffer breaks is between 25 and 50 percent.
CC CC The total length of buffer breaks is > 50 percent.
24. Vegetative Composition — First 100 feet of streamside area metric (skip for Tidal Marsh Streams)
Evaluate the dominant vegetation within 100 feet of each bank or to the edge of the watershed (whichever comes first) as it contributes
to assessment reach habitat.
LB RB
CA CA Vegetation is close to undisturbed in species present and their proportions. Lower strata composed of native
species, with non - native invasive species absent or sparse.
B E. B Vegetation indicates disturbance in terms of species diversity or proportions, but is still largely composed of native
species. This may include communities of weedy native species that develop after clear- cutting or clearing or
communities with non - native invasive species present, but not dominant, over a large portion of the expected strata or
communities missing understory but retaining canopy trees.
CC CC Vegetation is severely disturbed in terms of species diversity or proportions. Mature canopy is absent or communities
with non - native invasive species dominant over a large portion of expected strata or communities composed of planted
stands of non - characteristic species or communities inappropriately composed of a single species or no vegetation.
25. Conductivity — assessment reach metric (skip for all Coastal Plain streams)
25a. CYes L81 No Was a conductivity measurement recorded?
If No, select one of the following reasons. CNo Water COther:
glib. Check the box corresponding to the conductivity measurement (units 0 microsiernens per centimeten .
CA <46 CB 46 to < u'" C C u' to < 79 C D 79 to < 230 CE 230
Notes /Sketch:

Stream Reach 2
Draft NC SAM Stream Rating Sheet
Accompanies User Manual Version 1
Rating Calculator Version 1
Stream Site Name Dan River Steam Station Date of Evaluation 6 -17 -2015
Stream Category Pb1 Assessor Name /Organization Amec Foster Wheeler
Notes of Field Assessment Form (Y /N) NO
Presence of regulatory considerations (Y /N) NO
Additional stream information /supplementary measurements included (Y /N) YES
NC SAM feature type (perennial, intermittent, Tidal Marsh Stream) Intermittent
USACE/
NCDWR
Function Class Rating Summary
All Streams
Intermittent
(1) Hydrology
(2) Baseflow
MEDIUM
MEDIUM
(2) Flood Flow
(3) Streamside Area Attenuation
(4) Floodplain Access
MEDIUM
MEDIUM
(4) Wooded Riparian Buffer
(4) Microtopography
NA
NA
(3) Stream Stability
MEDIUM
MEDIUM
(4) Channel Stability
HIGH
HIGH
(4) Sediment Transport
HIGH
HIGH
(4) Stream Geomorphology
LOW
LOW
(2) Stream /Intertidal Zone Interaction
NA
NA
(2) Longitudinal Tidal Flow
NA
NA
(2) Tidal Marsh Stream Stability
NA
NA
(3) Tidal Marsh Channel Stability
NA
NA
(3) Tidal Marsh Stream Geomorphology
NA
NA
(1) Water Quality
LOW
LOW
(2) Baseflow
MEDIUM
MEDIUM
(2) Streamside Area Vegetation
MEDIUM
MEDIUM
(3) Upland Pollutant Filtration
HIGH
HIGH
(3) Thermoregulation
LOW
LOW
(2) Indicators of Stressors
NO
NO
(2) Aquatic Life Tolerance
LOW
NA
(2) Intertidal Zone Filtration
NA
NA
(1) Habitat
LOW
(2) In- stream Habitat
MEDIUM
MEDIUM
(3) Baseflow
MEDIUM
MEDIUM
(3) Substrate
HIGH
HIGH
(3) Stream Stability
MEDIUM
MEDIUM
(3) In- stream Habitat
LOW
LOW
(2) Stream -side Habitat
(3) Stream -side Habitat
(3) Thermoregulation
LOW
LOW
(2) Tidal Marsh In- stream Habitat
NA
NA
(3) Flow Restriction
NA
NA
(3) Tidal Marsh Stream Stability
NA
NA
(4) Tidal Marsh Channel Stability
NA
NA
(4) Tidal Marsh Stream Geomorphology
NA
NA
(3) Tidal Marsh In- stream Habitat
NA
NA
(2) Intertidal Zone Habitat
NA
NA
Overall
LOW

Stream Reach 3
NC SAM FIELD ASSESSMENT FORM
Accompanies User Manual Version 2
Rating Calculator Version 2
USACE AID #: NCDWR #:
INSTRUCTIONS: Attach a sketch of the assessment area and photographs. Attach a copy of the USGS 7.5- minute topographic
quadrangle, and circle the location of the stream reach under evaluation. If multiple stream reaches will be evaluated on the same
property, identify and number all reaches on the attached map, and include a separate form for each reach. See the NC SAM User
Manual for detailed descriptions and explanations of requested information. Record in the "Notes /Sketch" section if any supplementary
measurements were performed. See the NC SAM User Manual for examples of additional measurements that may be relevant.
NOTE EVIDENCE OF STRESSORS AFFECTING THE ASSESSMENT AREA (do not need to be within the assessment area).
PROJECT / SITE INFORMATION:
1. Project name (if any): Dan River Steam Station 2. Date of evaluation: 6 -17 -2015
3. Applicant/owner name: Duke Energy 4. Assessor name /organization: Amec Foster Wheeler
5. County: Rockingham 6. Nearest named water body
7. River Basin: Roanoke on USGS 7.5- minute quad: Dan River
8. Site coordinates (decimal degrees, at lower end of assessment reach): 36.4905, - 79.7185
STREAM INFORMATION: (depth and width can be approximations)
9. Site number (show on attached map): Stream Reach 3 10. Length of assessment reach evaluated (feet): 50
11. Channel depth from bed (in riffle, if present) to top of bank (feet): 2 -3 Feet F- Unable to assess channel depth.
12. Channel width at top of bank (feet): 3 -4 Feet '1•3, is assessment reach a sv amp stream? cYes CNN
14. Feature type: Perennial flow F. Intermittent flow FTidal Marsh Stream
STREAM RATING INFORMATION:
15. NC SAM Zone: []Mountains (M) Piedmont (P) []Inner Coastal Plain (I) []Outer Coastal Plain (0)
16. Estimated geomorphic
valley shape (skip for Ca ` C. b
Tidal Marsh Stream): (more sinuous stream, flatter valley slope) (less sinuous stream, steeper valley slope)
17. Watershed size: (skip CSize 1 (< 0.1 mi`) CSize 2 (0.1 to < 0.5 mi`) L]Size 3 (0.5 to < 5 mi`) L]Size 4 (> 5 mi)
for Tidal Marsh Stream)
ADDITIONAL INFORMATION:
18. Were regulatory considerations evaluated? CYes Co No If Yes, check all that appy to the assessment area.
f- Section 10 water I- Classified Trout Waters I- Water Supply Watershed ( L:I E]II EIII []IV PV)
F- Essential Fish Habitat F- Primary Nursery Area F- High Quality Waters /Outstanding Resource Waters
[® Publicly owned property F- NCDWR riparian buffer rule in effect r Nutrient Sensitive Waters
F- Anadromous fish F- 303(d) List F- CAMA Area of Environmental Concern (AEC)
F- Documented presence of a federal and /or state listed protected species within the assessment area.
List species:
(® Designated Critical Habitat (list species):
19. Are additional stream information /supplementary measurements included in "Notes /Sketch" section or attached? U:'Yes r 1No
1. Channel Water - assessment reach metric (skip for Size 1 streams and Tidal Marsh Streams)
[]A Water throughout assessment reach.
rB No flow, water in pools only.
C]C No water in assessment reach.
2. Evidence of Flow Restriction - assessment reach metric
. A At least 10% of assessment reach in- stream habitat or riffle -pool sequence is adversely affected by a flow restriction or fill to the
point of obstructing flow or a channel choked with aquatic macrophytes or ponded water or impounded on flood or ebb within
the assessment reach (examples: undersized or perched culverts, causeways that constrict the channel, tidal gates).
[]B Not A
3. Feature Pattern - assessment reach metric
[o] A A majority of the assessment reach has altered pattern (examples: straightening, modification above or below culvert).
[]B Not A.
4. Feature Longitudinal Profile - assessment reach metric
[o] A Majority of assessment reach has a substantially altered stream profile (examples: channel down - cutting, existing damming,
over widening, active aggradation, dredging, and excavation where appropriate channel profile has not reformed from any of
these disturbances).
B Not A
5. Signs of Active Instability - assessment reach metric
Consider only current instability, not past events from which the stream has currently recovered. Examples of instability include
active bank failure, active channel down - cutting (head -cut), active widening, and artificial hardening (such as concrete, gabion, rip -rap).
[]A < 10% of channel unstable
rB 10 to 25% of channel unstable
rC > 25% of channel unstable
6. Streamside Area Interaction - streamside area metric
Consider for the Left Bank (LB) and the Right Bank (RB).
LB RB
r'A P'A Little or no evidence of conditions that adversely affect reference interaction
. B E 8 Moderate evidence of conditions (examples: berms, levees, down - cutting, aggradation, dredging) that adversely affect
reference interaction (examples: limited streamside area access, disruption of flood flows through streamside area,
leaky or intermittent bulkheads, causeways with floodplain constriction, minor ditching [including mosquito ditching])

�C CC Extensive evidence of conditions that adversely affect reference interaction (little to no floodplain /intertidal zone access
[examples: causeways with floodplain and channel constriction, bulkheads, retaining walls, fill, stream incision,
disruption of flood flows through streamside area] or too much floodplain /intertidal zone access [examples:
impoundments, intensive mosquito ditching]) or floodplain /intertidal zone unnaturally absent or assessment reach is a
man -made feature on an interstream divide
7. Water Quality Stressors - assessment reach /intertidal zone metric
Check all that apply.
( A Discolored water in stream or intertidal zone (milky white, blue, unnatural water discoloration, oil sheen, stream foam)
B Excessive sedimentation (burying of stream features or intertidal zone)
F- C Noticeable evidence of pollutant discharges entering the assessment reach and causing a water quality problem
C— D Odor (not including natural sulfide odors)
Fa E Current published or collected data indicating degraded water quality in the assessment reach. Cite source in the "Notes /Sketch"
section.
(- F Livestock with access to stream or intertidal zone
C— G Excessive algae in stream or intertidal zone
F H Degraded marsh vegetation in the intertidal zone (removal, burning, regular mowing, destruction, etc.)
F I Other: (explain in "Notes /Sketch" section)
f-° J Little to no stressors
8. Recent Weather- watershed metric
For Size 1 or 2 streams, D1 drought or higher is considered a drought; for Size 3 or 4 streams, D2 drought or higher is considered a
drought.
rA Drought conditions and no rainfall or rainfall not exceeding 1 inch within the last 48 hours
[]B Drought conditions and rainfall exceeding 1 inch within the last 48 hours
rC No drought conditions
9 Large or Dangerous Stream - assessment reach metric
rYes [.] No Is stream is too large or dangerous to assess? If Yes, skip to Metric 13 ( Streamside Area Ground Surface Condition).
10. Natural In- stream Habitat Types - assessment reach metric
10a. Co Yes CNo Degraded in- stream habitat over majority of the assessment reach (examples of stressors include excessive
sedimentation, mining, excavation, in- stream hardening [for example, rip -rap], recent dredging, and snagging)
(evaluate for size 4 Coastal Plain streams only, then skip to Metric 12)
10b. Check all that occur (occurs if > 5% coverage of assessment reach) (skip for Size 4 Coastal Plain streams)
F- A Multiple aquatic macrophrytes and aquatic mosses E i— F 5% oysters or other natural hard bottoms
(include livery arts, lichens, and algal mats � G Submerged aquatic vegetation
F B Multiple sticks and /or leaf packs and /or emergent w � 2, H Low -tide refugia (pools)
vegetation Y t o F I Sand bottom
I— C Multiple snags and logs (including lap tree I° J 5% vertical bank along the marsh
F- D 5% undercut banks and /or root mats and /or roots O F- K Little or no habitat
in banks extend to the normal wetted perimeter
Fv E Little or no habitat
*"""""""""" """""""""""""""" --- REMAINING QUESTIONS ARE NOT APPLICABLE FOR TIDAL MARSH STREAMS *"""""""""""""""""""""" --
11. Bedform and Substrate -assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)
11 a. CYes LolNo Is assessment reach in a natural sand -bed stream? (skip for Coastal Plain streams)
11 b. Bedform evaluated. Check the appropriate box(es).
F- A Riffle -run section (evaluate 11c)
FV B Pool -glide section (evaluate 11 d)
I- C Natural bedform absent (skip to Metric 12, Aquatic Life)
•'• c in r1 lei
sectiona, cI "ieck all tI °rat occur below tI °ie normal wetted perimeter & tI °ie assessmen't react °i - c lYeti °ier or not subr erged
Check
at least
one
sox in each rcw (.slop for Size 4 Coastal Plain Streams and 'Tidal Marsh Streams). Not = resent (NPi =
absent..
Rare
(R = present
but
5 .0 %%
Common (C _ - .0 -40 %.. Abundant A _ - 40 -70% Predominant (P = > 70% Cur nula'tive
percentages
should
not exceed
'1.00%
°or each assessment reach.
Bedrock /'sa pro lite
J
Boulder (256 - 4096 m, ,
Cobble X64 - 256 mrm ,
Gravel (2 - 64 m,
L7
E
Sand ',062 - 2 mrm ,
.
.
.
J
.
Siluclay ( 0.062 ,mrn
Detritus
Artificial (rip -rap.. concrete.. etc.;
11 d. CYes
Co
No
Are pools filled with sediment? (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)
12. Aquatic Life - assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)
12a. Co Yes CNo Was an in- stream aquatic life assessment performed as described in the User Manual?
If No, select one of the following reasons and skip to Metric 13. []No Water []Other:
12b. En Yes CNo Are aquatic organisms present in the assessment reach (look in riffles, pools, then snags)? If Yes, check
all that apply. If No, skip to Metric 13.
1 >1 Numbers over columns refer to "individuals" for size 1 and 2 streams and "taxa" for size 3 and 4 streams.
jv- r- Adult frogs
F F- Aquatic reptiles

F F- Aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats)
F F- Beetles (including water pennies)
F F- Caddisfly larvae (Trichoptera [T])
F j- Asian clam (Corbicula )
F F- Crustacean (iso pod/am phipod /crayfish /sh rim p)
F j- Damselfly and dragonfly larvae
F F- Dipterans (true flies)
F j- Mayfly larvae (Ephemeroptera [E])
F F- Megaloptera (alderfly, fishfly, dobsonfly larvae)
F jv Midges /mosquito larvae
F F Mosquito fish (Gambusia) or mud minnows (Umbra pygmaea)
F- [-- Mussels /Clams (not Corbicula )
F- F Other fish
F- [-- Salamanders /tadpoles
F (— Snails
F- (- Stonefly larvae (Plecoptera [P])
F F Tipulid larvae
F- (- Worms /leeches
13. Streamside Area Ground Surface Condition - streamside area metric (skip for Tidal Marsh Streams and B valley types)
Consider for the Left Bank (LB) and the Right Bank (RB). Consider storage capacity with regard to both overbank flow and
upland runoff.
LB RB
CA CA Little or no alteration to water storage capacity over a majority of the streamside area
CB PB Moderate alteration to water storage capacity over a majority of the streamside area
CC cc Severe alteration to water storage capacity over a majority of the streamside area (examples include: ditches, fill,
soil, compaction, livestock disturbance, buildings, man -made levees, drainage pipes)
14. Streamside Area Water Storage - streamside area metric (skip for Size 1 streams, Tidal Marsh Streams, and B valley types)
Consider for the Left Bank (LB) and the Right Bank (RB) of the streamside area.
LB RB
CA CA Majority of streamside area with depressions able to pond water >_ 6 inches deep
rB EB Majority of streamside area with depressions able to pond water 3 to 6 inches deep
CC CC Majority of streamside area with depressions able to pond water < 3 inches deep
15. Wetland Presence - streamside area metric (skip for Tidal Marsh Streams)
Consider for the Left Bank (LB) and the Right Bank (RB). Do not consider wetlands outside of the streamside area or within the
normal wetted perimeter of assessment reach.
LB RB
CY CY Are wetlands present in the streamside area?
[.] N EN
16. Baseflow Contributors - assessment reach metric (skip for size 4 streams and Tidal Marsh Streams)
Check all contributors within the assessment reach or within view of and draining to the assessment reach.
[V A Streams and /or springs (jurisdictional discharges)
1-8 Ponds (include wet detention basins; do not include sediment basins or dry detention basins)
C Obstruction that passes some flow during low -flow periods within assessment area (beaver dam, bottom - release dam)
D Evidence of bank seepage or sweating (iron oxidizing bacteria in water indicates seepage)
E Stream bed or bank soil reduced (dig through deposited sediment if present)
I— F None of the above
17. Baseflow Detractors - assessment area metric (skip for Tidal Marsh Streams)
Check all that apply.
( A Evidence of substantial water withdrawals from the assessment reach (includes areas excavated for pump installation)
B Obstruction not passing flow during low flow periods affecting the assessment reach (ex: watertight dam, sediment deposit)
(` C Urban stream (? 24% impervious surface for watershed)
D Evidence that the stream -side area has been modified resulting in accelerated drainage into the assessment reach
( E Assessment reach relocated to valley edge
F None of the above
18. Shading - assessment reach metric (skip for Tidal Marsh Streams)
Consider aspect. Consider "leaf -on" condition.
CA Stream shading is appropriate for stream category (may include gaps associated with natural processes)
�. 8 Degraded (example: scattered trees)
CC Stream shading is gone or largely absent
19. Buffer Width - streamside area metric (skip for Tidal Marsh Streams)
Consider "vegetated buffer" and "wooded buffer" separately for left bank (LB) and right bank (RB) starting at the top
of bank out to the first break.
Vegetated Wooded
LB RB LB RB
CA CA CA CA ? 100 -feet wide or extends to the edge of the watershed
B .E B C B C B From 50 to < 100 -feet wide
CC P, C CC CC From 30 to < 50 -feet wide
CD CD E;D CD From 10 to < 30 -feet wide
CE CIE CE CE < 10 -feet wide or no trees
20. Buffer Structure - streamside area metric (skip for Tidal Marsh Streams)
Consider for left bank (LB) and right bank (RB) for Metric 19 ( "Vegetated" Buffer Width).

LB
RB
CA
CA
Mature forest
C. B
CB
Non - mature woody vegetation or modified vegetation structure
r— C
CC
Herbaceous vegetation with or without a strip of trees < 10 feet wide
ED
ED
Maintained shrubs
CE
CE
Little or no vegetation
21. Buffer Stressors
– streamside area metric (skip for Tidal Marsh Streams)
Check all appropriate boxes for left bank (LB) and right bank (RB). Indicate if listed stressor abuts stream (Abuts), does not abut but
is within
30 feet
of stream (< 30 feet), or is between 30 to 50 feet of stream (30 -50 feet).
If none of the following stressors occurs on either bank, check here and skip to Metric 22: I
Abuts
< 30 feet 30 -50 feet
LB
RB
LB RB LB RB
CA
CA
CA CA CA CA Row crops
CB
EB
CB CB En B [a] B Maintained turf
CC
CC
CC CC CC CC Pasture (no livestock) /commercial horticulture
ED
ED
ED ED ED ED Pasture (active livestock use)
22. Stem Density – streamside area metric (skip for Tidal Marsh Streams)
Consider for left bank (LB) and right bank (RB) for Metric 19 ( "Wooded" Buffer Width).
LB
RB
CA
CA
Medium to high stem density
CB
CB
Low stem density
C
E. C
No wooded riparian buffer or predominantly herbaceous species or bare ground
23. Continuity of Vegetated Buffer– streamside area metric (skip for Tidal Marsh Streams)
Consider whether vegetated buffer is continuous along stream (parallel). Breaks are areas lacking vegetation > 10 -feet wide.
LB RB
A A The total length of buffer breaks is < 25 percent.
B B The total length of buffer breaks is between 25 and 50 percent.
CC CC The total length of buffer breaks is > 50 percent.
24. Vegetative Composition – First 100 feet of streamside area metric (skip for Tidal Marsh Streams)
Evaluate the dominant vegetation within 100 feet of each bank or to the edge of the watershed (whichever comes first) as it contributes
to assessment reach habitat.
LB RB
CA CA Vegetation is close to undisturbed in species present and their proportions. Lower strata composed of native
species, with non - native invasive species absent or sparse.
. B C.'B Vegetation indicates disturbance in terms of species diversity or proportions, but is still largely composed of native
species. This may include communities of weedy native species that develop after clear- cutting or clearing or
communities with non - native invasive species present, but not dominant, over a large portion of the expected strata or
communities missing understory but retaining canopy trees.
CC CC Vegetation is severely disturbed in terms of species diversity or proportions. Mature canopy is absent or communities
with non - native invasive species dominant over a large portion of expected strata or communities composed of planted
stands of non - characteristic species or communities inappropriately composed of a single species or no vegetation.
25. Conductivity – assessment reach metric (skip for all Coastal Plain streams)
25a. CYes LO No Was a conductivity measurement recorded?
If No, select one of the following reasons. CNo Water Other:
glib. Check the box corresponding to the conductivity measurement (units 0 microsiernens per centimeter;.
CA <46 i3 46 to < u'" C u'" to < 79 F, D 79 to < 230 CE 230
Notes /Sketch:

Stream Reach 3
Draft NC SAM Stream Rating Sheet
Accompanies User Manual Version 1
Rating Calculator Version 1
Stream Site Name Dan River Steam Station
Stream Category Pb1
Notes of Field Assessment Form (Y /N)
Presence of regulatory considerations (Y /N)
Additional stream information /supplementary measurements included (Y /N)
NC SAM feature type (perennial, intermittent, Tidal Marsh Stream)
Function Class Rating Summary
(1) Hydrology
(2) Baseflow
(2) Flood Flow
(3) Streamside Area Attenuation
(4) Floodplain Access
(4) Wooded Riparian Buffer
(4) Microtopography
(3) Stream Stability
(4) Channel Stability
(4) Sediment Transport
(4) Stream Geomorphology
(2) Stream /Intertidal Zone Interaction
(2) Longitudinal Tidal Flow
(2) Tidal Marsh Stream Stability
(3) Tidal Marsh Channel Stability
(3) Tidal Marsh Stream Geomorphology
(1) Water Quality
(2) Baseflow
(2) Streamside Area Vegetation
(3) Upland Pollutant Filtration
(3) Thermoregulation
(2) Indicators of Stressors
(2) Aquatic Life Tolerance
(2) Intertidal Zone Filtration
(1) Habitat
(2) In- stream Habitat
(3) Baseflow
(3) Substrate
(3) Stream Stability
(3) In- stream Habitat
(2) Stream -side Habitat
(3) Stream -side Habitat
(3) Thermoregulation
(2) Tidal Marsh In- stream Habitat
(3) Flow Restriction
(3) Tidal Marsh Stream Stability
(4) Tidal Marsh Channel Stability
(4) Tidal Marsh Stream Geomorphology
(3) Tidal Marsh In- stream Habitat
(2) Intertidal Zone Habitat
Overall
Date of Evaluation 6 -17 -2015
Assessor Name /Organization Amec Foster Wheeler
NO
NO
YES
Intermittent
USACE/
NCDWR
All Streams
Intermittent
LOW
LOW
MEDIUM
MEDIUM
LOW
LOW
LOW
LOW
MEDIUM
MEDIUM
LOW
LOW
NA
NA
MEDIUM
MEDIUM
MEDIUM
MEDIUM
HIGH
HIGH
LOW
LOW
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
LOW
LOW
MEDIUM
MEDIUM
MEDIUM
MEDIUM
MEDIUM
MEDIUM
MEDIUM
MEDIUM
NO
NO
LOW
NA
NA
NA
MEDIUM
MEDIUM
MEDIUM
MEDIUM
MEDIUM
MEDIUM
HIGH
HIGH
MEDIUM
MEDIUM
LOW
LOW
MEDIUM
MEDIUM
MEDIUM
MEDIUM
MEDIUM
MEDIUM
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
LOW
LOW

Wetland 1 (southern wetland)
NC WAM WETLAND ASSESSMENT FORM
Accompanies User Manual Version 4.1
Rating Calculator Version 4.1
Wetland Site Name Dan River Steam Station - Wetland 1
Wetland Typel Seep
Level III Ecoregionl Piedmont
River Basing Roanoke
;Yes F--mNo Precipitation within 48 hrs?
Date 6 -17 -2015
Assessor Name /Organization Amec Foster Wheeler
Nearest Named Water Body Dan River
USGS 8 -Digit Catalogue Unit 03010103
Latitude /Longitude (deci- degrees) 36.4954/- 79.7179
Evidence of stressors affecting the assessment area (may not be within the assessment area)
Please circle and /or make note on last page if evidence of stressors is apparent. Consider departure from reference, if
appropriate, in recent past (for instance, approximately within 10 years). Noteworthy stressors include, but are not limited
to the following.
Hydrological modifications (examples: ditches, dams, beaver dams, dikes, berms, ponds, etc.)
Surface and sub - surface discharges into the wetland (examples: discharges containing obvious pollutants, presence of nearby
septic tanks, underground storage tanks (USTs), hog lagoons, etc.)
Signs of vegetation stress (examples: vegetation mortality, insect damage, disease, storm damage, salt intrusion, etc.)
Habitat/plant community alteration (examples: mowing, clear- cutting, exotics, etc.)
Is the assessment area intensively managed? FYes [-,No
Regulatory Considerations (select all that apply to the assessment area)
[- Anadromous fish
F Federally protected species or State endangered or threatened species
F NCDWQ riparian buffer rule in effect
Abuts a Primary Nursery Area (PNA)
Publicly owned property
C N.C. Division of Coastal Management Area of Environmental Concern (AEC) (including buffer)
F Abuts a stream with a NCDWQ classification of SA or supplemental classifications of HOW, ORW, or Trout
Designated NCNHP reference community
Abuts a 303(d)- listed stream or a tributary to a 303(d)- listed stream
What type of natural stream is associated with the wetland, if any? (check all that apply)
[-J Blackwater
Brownwater
F Tidal (if tidal, check one of the following boxes) ;Lunar 'Wiind ;Both
Is the assessment area on a coastal island? [;Yes MNo
Is the assessment area's surface water storage capacity or duration substantially altered by beaver? rYes r., No
Does the assessment area experience overbank flooding during normal rainfall conditions? '',Yes F.'',No
1. Ground Surface Condition/Vegetation Condition - assessment area condition metric
Check a box in each column. Consider alteration to the ground surface (GS) in the assessment area and vegetation structure
(VS) in the assessment area. Compare to reference wetland if applicable (see User Manual). If a reference is not applicable,
then rate the assessment area based on evidence of an effect.
GS VS
F,A F, A Not severely altered
�B [-,B Severely altered over a majority of the assessment area (ground surface alteration examples: vehicle tracks, excessive
sedimentation, fire -plow lanes, skidder tracks, bedding, fill, soil compaction, obvious pollutants) (vegetation structure
alteration examples: mechanical disturbance, herbicides, salt intrusion [where appropriate], exotic species, grazing,
less diversity [if appropriate], hydrologic alteration)
2. Surface and Sub-Surface Storage Capacity and Duration - assessment area condition metric
Check a box in each column. Consider surface storage capacity and duration (Surf) and sub - surface storage capacity and
duration (Sub). Consider both increase and decrease in hydrology. Refer to the current NRCS lateral effect of ditching guidance for
North Carolina hydric soils (see USACE Wilmington District website) for the zone of influence of ditches in hydric soils. A ditch
<- 1 foot deep is considered to affect surface water only, while a ditch > 1 foot deep is expected to affect both surface and ditch
sub - surface water. Consider tidal flooding regime, if applicable.
Surf Sub
[-_A E_-A Water storage capacity and duration are not altered.
'B MB Water storage capacity or duration are altered, but not substantially (typically, not sufficient to change vegetation).
C [;C Water storage capacity or duration are substantially altered (typically, alteration sufficient to result in vegetation
change) (examples: draining, flooding, soil compaction, filling, excessive sedimentation, underground utility lines).
3. Water Storage /Surface Relief - assessment area /wetland type condition metric (answer for non -marsh wetlands only)
Check a box in each column for each group below. Select the appropriate storage for the assessment area (AA) and the wetland
type (WT).
AA WT
3a. A JA Majority of wetland with depressions able to pond water > 1 foot deep
JB [-JB Majority of wetland with depressions able to pond water 6 inches to 1 foot deep
[-JC [-JC Majority of wetland with depressions able to pond water 3 to 6 inches deep
'D MD Depressions able to pond water < 3 inches deep
3b. 'A Evidence that maximum depth of inundation is greater than 2 feet
B Evidence that maximum depth of inundation is between 1 and 2 feet
C Evidence that maximum depth of inundation is less than 1 foot

4. Soil Texture /Structure - assessment area condition metric
Check a box from each of the three soil property groups below. Dig soil profile in the dominant assessment area landscape
feature. Make soil observations within the 12 inches. Use most recent National Technical Committee for Hydric Soils guidance for
regional indicators.
4a. [-,A Sandy soil
B Loamy or clayey soils exhibiting redoximorphic features (concentrations, depletions, or rhizospheres)
'C Loamy or clayey soils not exhibiting redoximorphic features
'D Loamy or clayey gleyed soil
E Histosol or histic epipedon
4b. A Soil ribbon < 1 inch
'B Soil ribbon > 1 inch
4c. 'A No peat or muck presence
'B A peat or muck presence
5. Discharge into Wetland - opportunity metric
Check a box in each column. Consider surface pollutants or discharges (Surf) and sub - surface pollutants or discharges (Sub).
Examples of sub - surface discharges include presence of nearby septic tank, underground storage tank (UST), etc.
Surf Sub
-,A A Little or no evidence of pollutants or discharges entering the assessment area
B B Noticeable evidence of pollutants or discharges entering the wetland and stressing, but not overwhelming the
treatment capacity of the assessment area
C C Noticeable evidence of pollutants or discharges (pathogen, particulate, or soluble) entering the assessment area and
potentially overwhelming the treatment capacity of the wetland (water discoloration, dead vegetation, excessive
sedimentation, odor)
6. Land Use - opportunity metric
Check all that apply (at least one box in each column). Evaluation involves a GIS effort with field adjustment. Consider sources
draining to assessment area within entire upstream watershed (WS), within 5 miles and within the watershed draining to the
assessment area (5M), and within 2 miles and within the watershed draining to the assessment area (2M). Effective riparian buffers
are considered to be 50 feet wide in the Coastal Plain and Piedmont ecoregions and 30 feet wide in the Blue Ridge Mountains ecoregion.
WS 5M 2M
rv- A P A R A > 10% impervious surfaces
F B F B F B < 10% impervious surfaces
F C C C F' C Confined animal operations (or other local, concentrated source of pollutants)
F D R, D R D > 20% coverage of pasture
r E r E Iv E > 20% coverage of agricultural land (regularly plowed land)
1`7 F R/ F P-1 F > 20% coverage of maintained grass /herb
F G F G F G > 20% coverage of clear -cut land
F H F H F H Little or no opportunity to improve water quality. Lack of opportunity may result from hydrologic alterations
that prevent drainage or overbank flow from affecting the assessment area.
7. Wetland Acting as Vegetated Buffer -assessment area /wetland complex condition metric
7a. Is assessment area within 50 feet of a tributary or other open water?
Yes No If Yes, continue to 7b. If No, skip to Metric 8.
Wetland buffer need only be present on one side of the water body. Make buffer judgment based on the average width of the wetland.
Record a note if a portion of the buffer has been removed or disturbed.
7b. How much of the first 50 feet from the bank is weltand? Descriptor E should be selected if ditches effectively bypass the buffer.
A > 50 feet
B From 30 to < 50 feet
C From 15 to < 30 feet
D From 5 to < 15 feet
E < 5 feet or buffer bypassed by ditches
7c. Tributary width. If the tributary is anastomosed, combine widths of channels /braids for a total width.
<- 15 -feet wide '> 15 -feet wide [-,Other open water (no tributary present)
7d. Do roots of assessment area vegetation extend into the bank of the tributary/open water?
Yes [-, No
7e. Is tributary or other open water sheltered or exposed?
Sheltered - adjacent open water with width < 2500 feet and no regular boat traffic.
Exposed - adjacent open water with width > 2500 feet or regular boat traffic.
8. Wetland Width at the Assessment Area - wetland type /wetland complex metric (evaluate for riparian wetlands only)
Check a box in each column. Select the average width for the wetland type at the assessment area (WT)
and the wetland complex at the assessment areas (WC). See User Manual for WT and WC boundaries.
WT WC
'A A > 100 feet
B From 80 to < 100 feet
C C From 50 to < 80 feet
'D ;D From 40 to < 50 feet
'E E From 30 to < 40 feet
F F From 15 to < 30 feet
G AG From 5 to < 15 feet
H [-JH < 5 feet

9. Inundation Duration — assessment area condition metric
Answer for assessment area dominant landform.
A Evidence of short- duration inundation (< 7 consecutive days)
B Evidence of saturation, without evidence of inundation
C Evidence of long- duration inundation or very long- duration inundation (7 to 30 consecutive days or more)
10. Indicators of Deposition —assessment area condition metric
Consider recent deposition only (no plant growth since deposition).
'A Sediment deposition is not excessive, but at approximately natural levels.
'B Sediment deposition is excessive, but not overwhelming the wetland.
C Sediment deposition is excessive and is overwhelming the wetland.
Wetland Size — wetland type /wetland complex condition metric
Check a box in each column. Involves a GIS effort with field adjustment. This metric evaluates three aspects of the wetland area: the
size of the wetland type (WT), the size of the wetland complex (WC), and the size of the forested wetland (FW) (if applicable, see User
Manual). See the User Manual for boundaries of these evaluation areas. If assessment area is clear -cut, select "K" for the FW column.
WT
WC
FW (if applicable)
CA
CA
CA
> 500 acres
CB
CB
CB
From 100 to < 500 acres
C
CC
CC
From 50 to < 100 acres
CD
CD
CD
From 25 to < 50 acres
CE
CE
CE
From 10 to < 25 acres
CF
C F
CF
From 5 to < 10 acres
CG
CG
CG
From 1 to < 5 acres
CH
CH
CH
From 0.5 to < 1 acre
El
El
CI
From 0.1 to < 0.5 acre
CJ
CJ
CJ
From 0.01 to < 0.1 acre
E]K
K
E]K
< 0.01 acre or assessment area is clear -cut
12. Wetland Intactness — wetland type condition metric (evaluate for Pocosins only)
E]A Pocosin is the full extent (> 90 %) of its natural landscape size.
E]B Pocosin is < 90% of the full extent of its natural landscape size.
13. Connectivity to Other Natural Areas — landscape condition metric
13a. Check appropriate box(es) (a box may be checked in each column). Involves a GIS effort with field adjustment. This
evaluates whether the wetland is well connected (Well) and /or loosely connected (Loosely) to the landscape patch, the contiguous
metric naturally vegetated area and open water (if appropriate). Boundaries are formed by four -lane roads, regularly maintained utility
line corridors the width of a four -lane road or wider, urban landscapes, fields (pasture open and agriculture), or water > 300 feet wide.
Well Loosely
CA CA > 500 acres
HB H B From 100 to < 500 acres
C C From 50 to < 100 acres
.
D D From 10 to < 50 acres
E E < 10 acres
CF C F Wetland type has a poor or no connection to other natural habitats
13b. Evaluate for marshes only.
CYes CNo Wetland type has a surface hydrology connection to open waters /stream or tidal wetlands.
14. Edge Effect — wetland type condition metric (skip for all marshes)
May involve a GIS effort with field adjustment. Estimate distance from wetland type boundary to artificial edges. Artificial edges include
non - forested areas > 40 feet wide such as fields, development, roads, regularly maintained utility line corridors and clear -cuts.
Consider the eight main points of the compass.
CA No artificial edge within 150 feet in all directions
CB No artificial edge within 150 feet in four (4) to seven (7) directions
EC An artificial edge occurs within 150 feet in more than four (4) directions or assessment area is clear -cut
15. Vegetative Composition — assessment area condition metric (skip for all marshes and Pine Flat)
CA Vegetation is close to reference condition in species present and their proportions. Lower strata composed of appropriate
species, with exotic plants absent or sparse within the assessment area.
EB Vegetation is different from reference condition in species diversity or proportions, but still largely composed of native species
characteristic of the wetland type. This may include communities of weedy native species that develop after clearcutting or
clearing. It also includes communities with exotics present, but not dominant, over a large portion of the expected strata.
E]C Vegetation severely altered from reference in composition. Expected species are unnaturally absent (planted stands of non -
characteristic species or at least one stratum inappropriately composed of a single species). Exotic species are dominant in
at least one stratum.
16. Vegetative Diversity — assessment area condition metric (evaluate for Non -tidal Freshwater Marsh only)
A Vegetation diversity is high and is composed primarily of native species ( <10% cover of exotics).
B Vegetation diversity is low or has > 10% to 50% cover of exotics.
C Vegetation is dominated by exotic species ( >50% cover of exotics).

17. Vegetative Structure — assessment area /wetland type condition metric
17a. Is vegetation present?
EYes [] No If Yes, continue to 17b. If No, skip to Metric 18.
17b. Evaluate percent coverage of assessment area vegetation for all marshes only. Skip to 17c for non -marsh wetlands.
E]A
> 25%
coverage of vegetation
[]B
< 25% coverage of vegetation
17c. Check a box in each
column for each stratum. Evaluate this portion of the metric for non -marsh wetlands. Consider structure
in airspace
above the assessment area (AA) and the wetland type (WT) separately.
AA
WT
Q
A
A
Canopy closed, or nearly closed, with natural gaps associated with natural processes
B
B
Canopy present, but opened more than natural gaps
O
EC
EC
Canopy sparse or absent
oE]A
A
Dense mid - story/sapling layer
E]B
B
Moderate density mid - story/sapling layer
EC
Ec
Mid - story/sapling layer sparse or absent
E]A
A
Dense shrub layer
rEB
EB
Moderate density shrub layer
E]C
C
Shrub layer sparse or absent
E]A
A
Dense herb layer
EB
EB
Moderate density herb layer
_
E]C
C
Herb layer sparse or absent
18. Snags — wetland type condition metric
H A Large snags (more than one) are visible (> 12- inches DBH, or large relative to species present and landscape stability).
B Not A
19. Diameter Class Distribution — wetland type condition metric
[]A Majority of canopy trees have stems > 6 inches in diameter at breast height (DBH); many large trees (> 12 inches DBH) are
present.
[]B Majority of canopy trees have stems between 6 and 12 inches DBH, few are > 12 -inch DBH.
C Majority of canopy trees are < 6 inches DBH or no trees.
20. Large Woody Debris — wetland type condition metric
Include both natural debris and man - placed natural debris.
[:A Large logs (more than one) are visible (> 12 inches in diameter, or large relative to species present and landscape stability).
EB Not
21. Vegetation /Open Water Dispersion — wetland type /open water condition metric (evaluate for Non -Tidal Freshwater
Marsh only)
Select the figure that best describes the amount of interspersion between vegetation and open water in the growing season. Patterned
areas indicate vegetated areas, while solid white areas indicate open water.
E]A P, B E]C ED
22. Hydrologic Connectivity — assessment area condition metric (evaluate for riparian wetlands only)
Examples of activities that may severely alter hydrologic connectivity include intensive
ditching, fill, sedimentation, channelization, diversion, man -made berms, beaver dams, and stream incision.
A Overbank and overland flow are not severely altered in the assessment area.
B Overbank flow is severely altered in the assessment area.
C Overland flow is severely altered in the assessment area.
D Both overbank and overland flow are severely altered in the assessment area.
Notes

Wetland 1
NC WAM Wetland Rating Sheet
Accompanies User Manual Version 4.1
Rating Calculator Version 4.1
Wetland Site Name Dan River Steam Station - Wetland 1 Date 6 -17 -2015
Wetland Type Seep Assessor Name /Organization Amec Foster Wheeler
Notes on Field Assessment Form (Y /N)
Presence of regulatory considerations (Y /N)
Wetland is intensively managed (Y /N)
Assessment area is located within 50 feet of a natural tributary or other open water (Y /N)
Assessment area is substantially altered by beaver (Y /N)
Assessment area experiences overbank flooding during normal rainfall conditions (Y /N)
Assessment area is on a coastal island (Y /N)
Sub - function Rating Summary
Function Sub - function
Hydrology Surface Storage and Retention
Sub - Surface Storage and Retention
Water Quality Pathogen Change
Particulate Change
Soluble Change
Physical Change
Pollution Change
Habitat
Physical Structure
Landscape Patch Structure
Vegetation Composition
Function Rating Summary
Function
Metrics /Notes
Hydrology
Condition
Water Quality
Condition
Condition /Opportunity
Opportunity Presence? (Y /N)
Habitat
Conditon
Overall Wetland Rating MEDIUM
Metrics
Condition
Condition
Condition
Condition /Opportunity
Opportunity Presence? (Y /N)
Condition
Condition /Opportunity
Opportunity Presence? (Y /N)
Condition
Condition /Opportunity
Opportunity Presence? (Y /N)
Condition
Condition /Opportunity
Opportunity Presence? (Y /N)
Condition
Condition /Opportunity
Opportunity Presence? (Y /N)
Condition
Condition
Condition
NO
NO
YES
YES
NO
NO
NO
Rating
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
HIGH
LOW
MEDIUM
Rating
MEDIUM
HIGH
NA
NA
MEDIUM

Wetland 2 (northern wetland)
NC WAM WETLAND ASSESSMENT FORM
Accompanies User Manual Version 4.1
Rating Calculator Version 4.1
Wetland Site Name Dan River Steam Station - Wetland 2
Wetland Typel Seep
Level III Ecoregionl Piedmont
River Basinl Roanoke
;Yes E--,No Precipitation within 48 hrs?
Date 6 -17 -2015
Assessor Name /Organization Amec Foster Wheeler
Nearest Named Water Body Dan River
USGS 8 -Digit Catalogue Unit 03010103
Latitude /Longitude (deci- degrees) 36.4903/- 79.7188
Evidence of stressors affecting the assessment area (may not be within the assessment area)
Please circle and /or make note on last page if evidence of stressors is apparent. Consider departure from reference, if
appropriate, in recent past (for instance, approximately within 10 years). Noteworthy stressors include, but are not limited
to the following.
Hydrological modifications (examples: ditches, dams, beaver dams, dikes, berms, ponds, etc.)
Surface and sub - surface discharges into the wetland (examples: discharges containing obvious pollutants, presence of nearby
septic tanks, underground storage tanks (USTs), hog lagoons, etc.)
Signs of vegetation stress (examples: vegetation mortality, insect damage, disease, storm damage, salt intrusion, etc.)
Habitat /plant community alteration (examples: mowing, clear- cutting, exotics, etc.)
Is the assessment area intensively managed? Yes No
Regulatory Considerations (select all that apply to the assessment area)
" Anadromous fish
F Federally protected species or State endangered or threatened species
F NCDWQ riparian buffer rule in effect
F Abuts a Primary Nursery Area (PNA)
F Publicly owned property
C N.C. Division of Coastal Management Area of Environmental Concern (AEC) (including buffer)
Abuts a stream with a NCDWQ classification of SA or supplemental classifications of HQW, ORW, or Trout
Designated NCNHP reference community
Abuts a 303(d)- listed stream or a tributary to a 303(d)- listed stream
What type of natural stream is associated with the wetland, if any? (check all that apply)
Blackwater
Brownwater
Tidal (if tidal, check one of the following boxes) Lunar Wind Both
Is the assessment area on a coastal island? Yes No
Is the assessment area's surface water storage capacity or duration substantially altered by beaver? Yes MNo
Does the assessment area experience overbank flooding during normal rainfall conditions? F Yes F.' No
1. Ground Surface Condition/Vegetation Condition — assessment area condition metric
Check a box in each column. Consider alteration to the ground surface (GS) in the assessment area and vegetation structure
(VS) in the assessment area. Compare to reference wetland if applicable (see User Manual). If a reference is not applicable,
then rate the assessment area based on evidence of an effect.
GS VS
A A Not severely altered
B B Severely altered over a majority of the assessment area (ground surface alteration examples: vehicle tracks, excessive
sedimentation, fire -plow lanes, skidder tracks, bedding, fill, soil compaction, obvious pollutants) (vegetation structure
alteration examples: mechanical disturbance, herbicides, salt intrusion [where appropriate], exotic species, grazing,
less diversity [if appropriate], hydrologic alteration)
2. Surface and Sub - Surface Storage Capacity and Duration — assessment area condition metric
Check a box in each column. Consider surface storage capacity and duration (Surf) and sub - surface storage capacity and
duration (Sub). Consider both increase and decrease in hydrology. Refer to the current NRCS lateral effect of ditching guidance for
North Carolina hydric soils (see USACE Wilmington District website) for the zone of influence of ditches in hydric soils. A ditch
<_ 1 foot deep is considered to affect surface water only, while a ditch > 1 foot deep is expected to affect both surface and ditch
sub - surface water. Consider tidal flooding regime, if applicable.
Surf Sub
A A Water storage capacity and duration are not altered.
B B Water storage capacity or duration are altered, but not substantially (typically, not sufficient to change vegetation).
C C Water storage capacity or duration are substantially altered (typically, alteration sufficient to result in vegetation
change) (examples: draining, flooding, soil compaction, filling, excessive sedimentation, underground utility lines).
3. Water Storage /Surface Relief — assessment area/wetland type condition metric (answer for non -marsh wetlands only)
Check a box in each column for each group below. Select the appropriate storage for the assessment area (AA) and the wetland
type (WT).
AA WT
3a. A A Majority of wetland with depressions able to pond water > 1 foot deep
B B Majority of wetland with depressions able to pond water 6 inches to 1 foot deep
C C Majority of wetland with depressions able to pond water 3 to 6 inches deep
D D Depressions able to pond water < 3 inches deep
3b. A Evidence that maximum depth of inundation is greater than 2 feet
B Evidence that maximum depth of inundation is between 1 and 2 feet
C Evidence that maximum depth of inundation is less than 1 foot

4. Soil Texture /Structure — assessment area condition metric
Check a box from each of the three soil property groups below. Dig soil profile in the dominant assessment area landscape
feature. Make soil observations within the 12 inches. Use most recent National Technical Committee for Hydric Soils guidance for
regional indicators.
4a. ;A Sandy soil
B Loamy or clayey soils exhibiting redoximorphic features (concentrations, depletions, or rhizospheres)
C Loamy or clayey soils not exhibiting redoximorphic features
D Loamy or clayey gleyed soil
E Histosol or histic epipedon
4b. A Soil ribbon < 1 inch
E;B Soil ribbon >_ 1 inch
4c. ,A No peat or muck presence
E; B A peat or muck presence
5. Discharge into Wetland — opportunity metric
Check a box in each column. Consider surface pollutants or discharges (Surf) and sub - surface pollutants or discharges (Sub).
Examples of sub - surface discharges include presence of nearby septic tank, underground storage tank (UST), etc.
Surf Sub
A A Little or no evidence of pollutants or discharges entering the assessment area
B B Noticeable evidence of pollutants or discharges entering the wetland and stressing, but not overwhelming the
treatment capacity of the assessment area
C ; C Noticeable evidence of pollutants or discharges (pathogen, particulate, or soluble) entering the assessment area and
potentially overwhelming the treatment capacity of the wetland (water discoloration, dead vegetation, excessive
sedimentation, odor)
6. Land Use —opportunity metric
Check all that apply (at least one box in each column). Evaluation involves a GIS effort with field adjustment. Consider sources
draining to assessment area within entire upstream watershed (WS), within 5 miles and within the watershed draining to the
assessment area (5M), and within 2 miles and within the watershed draining to the assessment area (2M). Effective riparian buffers
are considered to be 50 feet wide in the Coastal Plain and Piedmont ecoregions and 30 feet wide in the Blue Ridge Mountains ecoregion.
WS 5M 2M
R A I-' A Pv A >_ 10% impervious surfaces
F_ F B f B < 10% impervious surfaces
P" C r— C F C Confined animal operations (or other local, concentrated source of pollutants)
P_ D D P✓ D >_ 20% coverage of pasture
F_ E R E R E >_ 20% coverage of agricultural land (regularly plowed land)
IW F F F P-1 F >_ 20% coverage of maintained grass /herb
f— G F G F G >_ 20% coverage of clear -cut land
F_ H F_ H I— H Little or no opportunity to improve water quality. Lack of opportunity may result from hydrologic alterations
that prevent drainage or overbank flow from affecting the assessment area.
Wetland Acting as Vegetated Buffer — assessment area /wetland complex condition metric
7a. Is assessment area within 50 feet of a tributary or other open water?
Yes No If Yes, continue to 7b. If No, skip to Metric 8.
Wetland buffer need only be present on one side of the water body. Make buffer judgment based on the average width of the wetland.
Record a note if a portion of the buffer has been removed or disturbed.
7b. How much of the first 50 feet from the bank is weltand? Descriptor E should be selected if ditches effectively bypass the buffer.
El A >_ 50 feet
B From 30 to < 50 feet
C From 15 to < 30 feet
D From 5 to < 15 feet
1 E < 5 feet or buffer bypassed by ditches
7c. Tributary width. If the tributary is anastomosed, combine widths of channels /braids for a total width.
<_ 15 -feet wide > 15 -feet wide Other open water (no tributary present)
7d. Do roots of assessment area vegetation extend into the bank of the tributary /open water?
Fj' Yes E-J No
7e. Is tributary or other open water sheltered or exposed?
Sheltered — adjacent open water with width < 2500 feet and no regular boat traffic.
Exposed — adjacent open water with width >_ 2500 feet or regular boat traffic.
8. Wetland Width at the Assessment Area — wetland type /wetland complex metric (evaluate for riparian wetlands only)
Check a box in
each column. Select the average width for the wetland type at the assessment area (WT)
and the wetland complex at the assessment areas (WC). See User Manual for WT and WC boundaries.
WT
WC
A
MA
>_ 100 feet
B
B
From 80 to < 100 feet
C
C
From 50 to < 80 feet
D
D
From 40 to < 50 feet
E
M E
From 30 to < 40 feet
F
F
From 15 to < 30 feet
G
G
From 5 to < 15 feet
H
H
< 5 feet

9. Inundation Duration — assessment area condition metric
Answer for assessment area dominant landform.
A Evidence of short- duration inundation (< 7 consecutive days)
B Evidence of saturation, without evidence of inundation
C Evidence of long- duration inundation or very long- duration inundation (7 to 30 consecutive days or more
10. Indicators of Deposition —assessment area condition metric
Consider recent deposition only (no plant growth since deposition),
A Sediment deposition is not excessive, but at approximately natural levels.
B Sediment deposition is excessive, but not overwhelming the wetland.
C Sediment deposition is excessive and is overwhelming the wetland.
11. Wetland Size — wetland type /wetland complex condition metric
Check a box in each column. Involves a GIS effort with field adjustment. This metric evaluates three aspects of the wetland area: the
size of the wetland type (WT), the size of the wetland complex (WC), and the size of the forested wetland (FW) (if applicable, see User
Manual). See the User Manual for boundaries of these evaluation areas. If assessment area is clear -cut, select "K" for the FW column.
WT WC FW (if applicable)
A CA CA >_ 500 acres
E] 8 E] 8 E] 8 From 100 to < 500 acres
E] C E] C E] C From 50 to < 100 acres
E] D D E D From 25 to < 50 acres
E CE CE From 10 to < 25 acres
F CF CF From 5 to < 10 acres
G F, G G From 1 to < 5 acres
H H H From 0.5 to < 1 acre
.' I E.' I E] I From 0.1 to < 0.5 acre
E]J E]J E]J From 0.01 to < 0.1 acre
E] K E] K E] K < 0.01 acre or assessment area is clear -cut
12. Wetland Intactness — wetland type condition metric (evaluate for Pocosins only)
A Pocosin is the full extent ( >_ 90 %) of its natural landscape size.
B Pocosin is < 90% of the full extent of its natural landscape size.
13. Connectivity to Other Natural Areas — landscape condition metric
13a. Check appropriate box(es) (a box may be checked in each column). Involves a GIS effort with field adjustment. This
evaluates whether the wetland is well connected (Well) and /or loosely connected (Loosely) to the landscape patch, the contiguous
metric naturally vegetated area and open water (if appropriate). Boundaries are formed by four -lane roads, regularly maintained utility
line corridors the width of a four -lane road or wider, urban landscapes, fields (pasture open and agriculture), or water > 300 feet wide
Well Loosely
A CA >_ 500 acres
B CB From 100 to < 500 acres
C C From 50 to < 100 acres
E] D E] D From 10 to < 50 acres
E]E EE <10acres
E] F E F Wetland type has a poor or no connection to other natural habitats
13b. Evaluate for marshes only.
Yes C No Wetland type has a surface hydrology connection to open waters /stream or tidal wetlands,
14. Edge Effect — wetland type condition metric (skip for all marshes)
May involve a GIS effort with field adjustment. Estimate distance from wetland type boundary to artificial edges. Artificial edges include
non - forested areas >_ 40 feet wide such as fields, development, roads, regularly maintained utility line corridors and clear -cuts
Consider the eight main points of the compass.
A No artificial edge within 150 feet in all directions
B No artificial edge within 150 feet in four (4) to seven (7) directions
C An artificial edge occurs within 150 feet in more than four (4) directions or assessment area is clear -cut
15. Vegetative Composition —assessment area condition metric (skip for all marshes and Pine Flat)
[]A Vegetation is close to reference condition in species present and their proportions. Lower strata composed of appropriate
species, with exotic plants absent or sparse within the assessment area.
B Vegetation is different from reference condition in species diversity or proportions, but still largely composed of native species
characteristic of the wetland type. This may include communities of weedy native species that develop after clearcutting or
clearing. It also includes communities with exotics present, but not dominant, over a large portion of the expected strata
C Vegetation severely altered from reference in composition. Expected species are unnaturally absent (planted stands of non
characteristic species or at least one stratum inappropriately composed of a single species). Exotic species are dominant it
at least one stratum.
16. Vegetative Diversity — assessment area condition metric (evaluate for Non -tidal Freshwater Marsh only)
A Vegetation diversity is high and is composed primarily of native species ( <10% cover of exotics),
B Vegetation diversity is low or has > 10% to 50% cover of exotics.
C Vegetation is dominated by exotic species ( >50% cover of exotics).

17. Vegetative Structure — assessment area /wetland type condition metric
17a. Is vegetation present?
Yes CNo If Yes, continue to 17b. If No, skip to Metric 18.
17b. Evaluate percent coverage of assessment area vegetation for all marshes only. Skip to 17c for non -marsh wetlands.
A
>_ 25%
coverage
of vegetation
B
< 25%
coverage of vegetation
17c. Check a box in each column for each stratum. Evaluate this portion of the metric for non -marsh wetlands. Consider structure
in airspace
above the assessment area (AA) and the wetland type (WT) separately.
AA
WT
a
CA
CA
Canopy closed, or nearly closed, with natural gaps associated with natural processes
e
0
B
C B
Canopy present, but opened more than natural gaps
U
C
C
Canopy sparse or absent
o
E]A
E]A
Dense mid - story /sapling layer
E] 8
E] 8
Moderate density mid - story /sapling layer
C
E C
Mid - story /sapling layer sparse or absent
n
A
CA
Dense shrub layer
t
E B
B
Moderate density shrub layer
C
C
Shrub layer sparse or absent
n
A
CA
Dense herb layer
B
EB
Moderate density herb layer
C
C C
Herb layer sparse or absent
18. Snags — wetland type condition metric
A Large snags (more than one) are visible (> 12- inches DBH, or large relative to species present and landscape stability)
B Not
19. Diameter Class Distribution —wetland type condition metric
A Majority of canopy trees have stems > 6 inches in diameter at breast height (DBH); many large trees (> 12 inches DBH) are
present.
B Majority of canopy trees have stems between 6 and 12 inches DBH, few are > 12 -inch DBH,
C Majority of canopy trees are < 6 inches DBH or no trees.
20. Large Woody Debris — wetland type condition metric
Include both natural debris and man - placed natural debris,
CA Large logs (more than one) are visible (> 12 inches in diameter, or large relative to species present and landscape stability)
B NotA
21. Vegetation /Open Water Dispersion — wetland type /open water condition metric (evaluate for Non -Tidal Freshwater
Marsh only)
Select the figure that best describes the amount of interspersion between vegetation and open water in the growing season. Patternec
areas indicate vegetated areas, while solid white areas indicate open water,
E]A E]B E]C D
X x
22. Hydrologic Connectivity — assessment area condition metric (evaluate for riparian wetlands only)
Examples of activities that may severely alter hydrologic connectivity include intensive
ditching, fill, sedimentation, channelization, diversion, man -made berms, beaver dams, and stream incision.
A Overbank and overland flow are not severely altered in the assessment area.
B Overbank flow is severely altered in the assessment area.
E] C Overland flow is severely altered in the assessment area.
CD Both overbank and overland flow are severely altered in the assessment area.
Notes

Wetland 2
NC WAM Wetland Rating Sheet
Accompanies User Manual Version 4.1
Rating Calculator Version 4.1
Wetland Site Name Dan River Steam Station - Wetland 2 Date 6 -17 -2015
Wetland Type Seep Assessor Name /Organization Amec Foster Wheeler
Notes on Field Assessment Form (Y /N)
Presence of regulatory considerations (Y /N)
Wetland is intensively managed (Y /N)
Assessment area is located within 50 feet of a natural tributary or other open water (Y /N)
Assessment area is substantially altered by beaver (Y /N)
Assessment area experiences overbank flooding during normal rainfall conditions (Y /N)
Assessment area is on a coastal island (Y /N)
Sub - function Rating Summary
Function Sub - function
Hydrology Surface Storage and Retention
Sub - Surface Storage and Retention
Water Quality Pathogen Change
Particulate Change
Soluble Change
Physical Change
Pollution Change
Habitat
Physical Structure
Landscape Patch Structure
Vegetation Composition
Function Rating Summary
Function
Metrics /Notes
Hydrology
Condition
Water Quality
Condition
Condition /Opportunity
Opportunity Presence? (Y /N)
Habitat
Conditon
Overall Wetland Rating MEDIUM
Metrics
Condition
Condition
Condition
Condition /Opportunity
Opportunity Presence? (Y /N)
Condition
Condition /Opportunity
Opportunity Presence? (Y /N)
Condition
Condition /Opportunity
Opportunity Presence? (Y /N)
Condition
Condition /Opportunity
Opportunity Presence? (Y /N)
Condition
Condition /Opportunity
Opportunity Presence? (Y /N)
Condition
Condition
Condition
NO
NO
YES
YES
NO
NO
NO
Rating
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
HIGH
LOW
MEDIUM
Rating
MEDIUM
HIGH
NA
NA
MEDIUM