20052029 Ver 1_Complete File_20050112

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Ms. Sandra Jennings
North Carolina Housing Services & Management Corporation
8 West Third Street, Suite 565
Winston-Salem, NC, 27101
APPROVAL of 401 Water Quality Certification with Additional Conditions
Dear Ms. Jennings:
Alan W. Klimck, P.E. Director
Division of Water Quality
December 5, 2005
DWQ# 05-2029
Forsyth County
The North Carolina Housing Services & Management Corporation has our approval to conduct stream
stabilization and restoration activities, in accordance with the attached conditions, along a total of 800 linear
feet of an unnamed tributary to the West Fork of the Deep River located at the Koerner Place Retirement
Community on Birch Lane in Kernersville, Forsyth County, as described in your application received by the
Division of Water Quality on November 2, 2005. After reviewing your application, we have determined that
this activity is covered by General Water Quality Certification Number 3495, which can be viewed on our
web site at http://h2o.enr.state.nc.us/ncwetlands. This Certification allows you to use Nationwide Permit
Number 27 when it is issued by the U.S. Army Corps of Engineers. In addition, you should secure any other
applicable federal, state or local permits before you proceed with your project, including (but not limited to)
those required by Sediment and Erosion Control, Non-Discharge, and Water Supply Watershed regulations.
Also, this approval will expire when the accompanying 404 permit expires unless otherwise specified in the
General Certification.
This approval is valid only for the purpose and design that you have described in your application. If you
change your project, you must notify us in writing, and you may be required to send us a new application for a
new certification. If the property is sold, the new owner must be given a copy of the Certification and
approval letter and is thereby responsible for complying with all conditions. If total wetland fills for this
project (now or in the future) exceed one acre, compensatory mitigation may be required as described in 15A
NCAC 2H .0506 (h). For this approval to be valid, you must.follow the conditions listed in the attached
certification, as well as the additional conditions listed below:
1. The following impacts are hereby approved as long as all other specific and general conditions of this
Certification are met. No other impacts, including incidental impacts, are approved:
Amount Approved Plan Location or Reference
Streams 800 linear feet Unnamed tributary to the West Fork of the Deep River
located at the Koerner Place Retirement Community on
Birch Lane in Kernersville, Forsyth County

NoahCarolina
,11'ali ally
North Carolina Division of Water Quality
Wetlands Certification Unit 1650 Mail Service Center Raleigh, NC 27699-1650 Phone [phone] FAX [phone]
2321 Crabtree Blvd. Raleigh, NC 27604-2260 Internet htto/th2o enr state.ne.us/ncwetiands
Customer Service Number: 1-877-623-6748
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
An Equal Opportunity/Affirmative Action Employer-50% Recycled/10% Post Consumer Paper
Ms. Sandra Jennings
Page 2, DWQ# 05-2029
December 5, 2005
2. Appropriate sediment and erosion control measures which equal or exceed those outlined in the most
recent version of the North Carolina Sediment and Erosion Control Planning and Design Manual or the
North Carolina Surface Mining Manual (available from the Division of Land Resources at NCDENR
regional offices or the central office), whichever is more appropriate, shall be designed, installed and
maintained properly to assure compliance at all times with the North Carolina water quality standards
that are applicable to Class WS-IV waters as described in 15A NCAC 02B .0216 Fresh Surface Water
Quality Standards For Class WS-1V Waters. Such measures must equal or exceed the requirements
specified in the most recent version of the North Carolina Sediment and Erosion Control Manual.
These measures must be maintained on all construction sites, borrow sites, and waste pile (spoil) sites,
including contractor owned and leased borrow pits, which are associated with this project.
3. Sediment and erosion control measures shall not be placed in wetlands or waters to the maximum extent
practicable. If placement of sediment and erosion control measures in wetlands or waters is
unavoidable, they shall be removed and the natural grade restored within six months of the date that the
Division of Land Resources has released the project.
4. The proposed project must comply with the local water supply ordinance approved by the N.C.
Environmental Management Commission (EMC) as required under the Randleman Lake Water Supply
Watershed: Protection and Maintenance of Riparian Areas (Randleman Buffer Rule) 15A NCAC 02B
.0250.
5. No waste, spoil, solids, or fill of any kind shall occur in wetlands, waters, or riparian areas beyond the
footprint of the impacts depicted in the Pre-Construction Notification. All construction activities,
including.the design, installation, operation, and maintenance of sediment and erosion control "Best
Management Practices" shall be performed so that no violations of state water quality standards,
statutes, or rules occur.
6. Upon finishing the project, the Applicant shall fill out and return the enclosed "Certificate of
Completion" to notify NCDWQ when all work included in the §401 Certification has been completed.
This certificate should be returned to the 401/Wetlands Unit of the NC Division of Water Quality at the
address listed on the form. Along with the Certificate of Completion, please send photographs showing
all restored stream reaches.
If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You
must act within 60 days of the date that you receive this letter. To ask for a hearing, send a written petition
which conforms to Chapter 150B of the North Carolina General Statutes to the Office of Administrative
Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This certification and its conditions are final
and binding unless you ask for a hearing.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act.
If you have any questions, please telephone Daryl Lamb in the DWQ Winston-Salem Regional Office at 336-
771-4600 or Ian McMillan in the Wetlands/401 Central Office in Raleigh at 919-715-4631.
Sincerely,
v t„Di?
4Aan. Klimek, P.E.
Ms. Sandra Jennings
Page 3, DWQ# 05-2029
December 5, 2005
AWK/cdl
Attachments
cc: Mr. John Thomas, U. S. Army Corps of Engineers, Raleigh Regulatory Field Office
Winston-Salem DWQ Regional Office
Central Files
Wetlands/401 File Copy
Mr. Rocky Powell, Clear Creeks Consulting, 1317 Knopp Road, Jarrettsville, MD 21084
O?O? W A T ?9pG
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, N.E. Director
Division of Water Quality
December 5, 2005
DWQ# 05-2029
Forsyth County
Ms. Sandra Jennings
North Carolina Housing Services & Management Corporation
8 West Third Street, Suite 565
Winston-Salem, NC, 27101
APPROVAL of 401 Water Quality Certification with Additional Conditions
Dear Ms. Jennings:
The North Carolina Housing Services & Management Corporation has our approval to conduct stream
stabilization and restoration activities, in accordance with the attached conditions, along a total of 800 linear
feet of an unnamed tributary to the West Fork of the Deep River located at the Koerner Place Retirement
Community on Birch Lane in Kernersville, Forsyth County, as described in your application received by the
Division of Water Quality on November 2, 2005. After reviewing your application, we have determined that
this activity is covered by General Water Quality Certification Number 3495, which can be viewed on our
web site at http://h2 o.enr.state.nc.us/ncwetlands. This Certification allows you to use Nationwide Permit
Number 27 when it is issued by the U.S. Army Corps of Engineers. In addition, you should secure any other
applicable federal, state or local permits before you proceed with your project, including (but not limited to)
those required by Sediment and Erosion Control, Non-Discharge, and Water Supply Watershed regulations.
Also, this approval will expire when the accompanying 404 permit expires unless otherwise specified in the
General Certification.
This approval is valid only for the purpose and design that you have described in your application. If you
change your project, you must notify us in writing, and you may be required to send us a new application for a
new certification. If the property is sold, the new owner must be given a copy of the Certification and
approval letter and is thereby responsible for complying with all conditions. If total wetland fills for this
project (now or in the future) exceed one acre, compensatory mitigation may be required as described in 15A
NCAC 2H .0506 (h). For this approval to be valid, you must follow the conditions listed in the attached
certification, as well as the additional conditions listed below:
The following impacts are hereby approved as long as all other specific and general conditions of this
Certification are met. No other impacts, including incidental impacts, are approved:
Amount Approved Plan Location or Reference
Streams 800 linear feet Unnamed tributary to the West Fork of the Deep River
located at the Koerner Place Retirement Community on
Birch Lane in Kernersville, Forsyth County

NorthCarolina
Aaturallj
North Carolina Division of Water Quality
Wetlands Certification Unit 1650 Mail Service Center Raleigh, NC 27699-1650 Phone [phone] FAX [phone]
2321 Crabtree Blvd. Raleigh, NC 27604-2260 Internet hnp//:h2o.enr.state.naus/ncwetlands
Customer Service Number: 1-877-623-6748
An Equal Opportunity/Affirmative Action Employer- 50% Recycled/10% Post Consumer Paper
Ms. Sandra Jennings
Page 2, DWQ# 05-2029
December 5, 2005
2. Appropriate sediment and erosion control measures which equal or exceed those outlined in the most
recent version of the North Carolina Sediment and Erosion Control Planning and Design Manual or the
North Carolina Surface Mining Manual (available from the Division of Land Resources at NCDENR
regional offices or the central office), whichever is more appropriate, shall be designed, installed and
maintained properly to assure compliance at all times with the North Carolina water quality standards
that are applicable to Class WS-IV waters as described in 15A NCAC 02B .0216 Fresh Surface Water
Quality Standards For Class WS-IV Waters. Such measures must equal or exceed the requirements
specified in the most recent version of the North Carolina Sediment and Erosion Control Manual.
These measures must be maintained on all construction sites, borrow sites, and waste pile (spoil) sites,
including contractor owned and leased borrow pits, which are associated with this project.
3. Sediment and erosion control measures shall not be placed in wetlands or waters to the maximum extent
practicable. If placement of sediment and erosion control measures in wetlands or waters is
unavoidable, they shall be removed and the natural grade restored within six months of the date that the
Division of Land Resources has released the project.
4. The proposed project must comply with the local water supply ordinance approved by the N.C.
Environmental Management Commission (EMC) as required under the Randleman Lake Water Supply
Watershed: Protection and Maintenance of Riparian Areas (Randleman Buffer Rule) 15A NCAC 02B
.0250.
5. No waste, spoil, solids, or fill of any kind shall occur in wetlands, waters, or riparian areas beyond the
footprint of the impacts depicted in the Pre-Construction Notification. All construction activities,
including the design, installation, operation, and maintenance of sediment and erosion control "Best
Management Practices" shall be performed so that no violations of state water quality standards,
statutes, or rules occur.
6. Upon finishing the project, the Applicant shall fill out and return the enclosed "Certificate of
Completion" to notify NCDWQ when all work included in the §401 Certification has been completed.
This certificate should be returned to the 401/Wetlands Unit of the NC Division of Water Quality at the
address listed on the form. Along with the Certificate of Completion, please send photographs showing
all restored stream reaches.
If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You
must act within 60 days of the date that you receive this letter. To ask for a hearing, send a written petition
which conforms to Chapter 150B of the North Carolina General Statutes to the Office of Administrative
Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This certification and its conditions are final
and binding unless you ask for a hearing.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act.
If you have any questions, please telephone Daryl Lamb in the DWQ Winston-Salem Regional Office at 336-
771-4600 or Ian McMillan in the Wetlands/401 Central Office in Raleigh at 919-715-4631.
Sincerely,
Alan W. Klimek, P.E.
Ms. Sandra Jennings
Page 3, DWQ# 05-2029
December 5, 2005
AWK/cdl
Attachments
cc: Mr. John Thomas, U. S. Army Corps of Engineers, Raleigh Regulatory Field Office
Winston-Salem DWQ Regional Office
Central Files
Wetlands/401 File Copy
Mr. Rocky Powell, Clear Creeks Consulting, 1317 Knopp Road, Jarrettsville, MD 21084
North Carolina Housing Foundation, Inc.
A non-profit developmen t corlx)ratio n ptv%,iding affordable housing for North Carolina's citizens.
Mr. Ian McMillan lus @§%9D
401 Oversight and Express Permits Unit
2321 Crabtree Boulevard
pE? ? 2005
Raleigh, NC 27604
DEFT ? TO;rk?Q?' iG;t?ti?'FI
Re: Koerner Place Retirement Community Stream RestoraaP'Action ID: 200620093 County: Forsyth
Dear. Mr. McMillan:
On November 22, 2005 Mr. Daryl Lamb, North Carolina Division of Water Quality met
on-site with our consultants Mr. Rocky Powell, Clear Creeks Consulting and Mr. Carl
Corse, CNA Engineers to discuss the above referenced project. Based on the findings of
that field meeting Mr. Lamb indicated that NCDWQ will require written authorization to
approve the project under WQ Certification 3495 which covers the placement of fill in
perennial stream channels and stream work involving more that 500 feet of stream bank.
Per Mr. Lamb's direction, I am forwarding an Updated Pre-Construction Notice for the
above referenced project as well as a $475 application fee. You will note on Page 5 of the
Updated Pre-Construction Notice the 500 linear feet of ephemeral channel has been
dropped from the stream impacts table. Only those impacts to jurisdictional waters are
shown in the revised table. These impacts total 800 linear feet of which 350 linear feet are
permanent.
It is my understanding that upon submittal of this revised impact table and the $475 permit
fee your agency will be able to issue the necessary approval letter for this project. I
appreciate your assistance in moving our project forward. I you need additional information
pleas contact me at my office [phone] Ext. 100.
Sincerely,
ASandra Jenn'

3 Rest Third Street, Suite 563 0 Winston-Salem. NC 27101-3923 Ica tel [phone] a fit 336.725.0-{60 tb nchsm.org
Office Use Only' Form Version February 2002
USACE Action ID No. DWQ No.
If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than
leaving the space blank.
1. Processing
1. Check all of the approval(s) requested for this project: DP
® Section 404 Permit
F-1 Section 10 Permit DEC 1 2005
® 401 Water Quality Certification 0Lt ti • 1. ATER Qu,,,1,1TY
? Riparian or Watershed Buffer Rules t'Tl?s yl.' 1 TV 'fiIYATFA Mi'CH
2. Nationwide, Regional or General Permit Number(s) Requested: NW - 27
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here:
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (see section VIII - Mitigation), check here: ?
H. Applicant Information
Owner/Applicant Information
Name: Sandra Jennings President
Mailing Address: North Carolina Housing Services & Management Corp.
8 West Third Street Suite 565
Winston-Salem NC 27101
Telephone Number: [phone] Fax Number:-336)725-0460
E-mail Address: [e-mail]
2. Agent Information (A signed and dated copy of the Agent Authorization letter must be
attached if the Agent has signatory authority for the owner/applicant.)
Name: Rocky Powell
Company Affiliation: Clear Creeks Consulting
Mailing Address: 1317 Knopp Road
Jarrettsville MD 21084
Telephone Number: [phone] Fax Number: Same
E-mail Address: [e-mail]
Page 1 of 9
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Koerner Place Stream Restoration
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): 6885-69-6509:6885-79-1718:6886-70-0755
4. Location
County: Forsyth Nearest Town: Kernersville
Subdivision name (include phase/lot number):
Directions to site (include road numbers, landmarks, etc.): Take Business Route 40
To Rte 66 Exit head south approximately '/z mile turn left on Birch Lane, follow into
Koerner Place Retirement Community
5. Site coordinates, if available (UTM or Lat/Long):
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Describe the existing land use or condition of the site at the time of this application:
Upper reaches of project on Sunlight Baptist Church property, are mowed lawn, cemetery,
and wooded along rear property boundary. The middle and lower reaches at the rear of the
retirement community is a wooded stream corridor.
7. Property size (acres): Church property - 2.25 acres Retirement Community - 21.39 acres
8. Nearest body of water (stream/river/sound/ocean/lake): West Fork of the Deep River
9. River Basin: Cape Fear River
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http:Hli2o.enr.state.nc.us/admin/maps/.)
Page 2 of 9
10. Describe the purpose of the proposed work:
Install an extended detention stormwater wetland pond on adjacent church property to
provide water quality and water quantity management for a highly urbanized watershed.
Stabilize 500 feet of eroding ephemeral channel, 580 feet of eroding intermittent channel,
and 220 feet of a deeply incised perennial stream along the rear of the retirement community
property.
11. List the type of equipment to be used to construct the project:
Tracked excavators with hydraulic thumbs, tracked trucks and tracked loaders, dump trucks
and misc. small trucks.
12. Describe the land use in the vicinity of this project:
Although the stream corridor along the middle and lower project reaches is wooded, the
dominant land use in the watershed is commercial (retail shopping centers, small businesses,
car dealerships, gas stations, restaurants, etc. ) concentrated along Route 66; with mowed
lawns, a cemetery, and gravel parking lots on the adjacent church property; old field and
grasslands on adjacent vacant lots to the north; and moderate-density multi-family residential
and parking within the retirement community property.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
A pre-application meeting was held on-site September 29, 2005 to present the project to the
permitting agencies. The following persons were in attendance: Mr. John Thomas, USACOE;
Mr. Rocky Powell, Clear Creeks Consulting, and Mr. Carl Corse, CNA Engineers.
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
None anticipated
Page 3 of 9
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
1. Provide a brief written description of the proposed impacts:
Temporary impacts include: 1) Removal of existing vegetation at the rear of the church
property to install stormwater wetland pond and at various points along the ephemeral and
intermittent channels at the rear of the retirement community to allow grading, sloping, and
matting of the banks.
Permanent impacts include: 1) Placement of fill along 175 feet of deeply incised perennial
stream toraise the streambed, reconnect the channel with its floodplain and provide grade
control by installing log-boulder step pools; and 2) placement of fill in abandoned
intermittent channel sections after constructing a new channel that is reconnected to the
floodplain.
2. Individually list wetland impacts below:
Wetland Impact
Site Number
(indicate on ma
Type of Impact* Area of
Impact
(acres) Located within
100-year Fooodplain**
(ycs/no Distance to
Nearest Stream
linear feet
Type of Wetland***

• List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, Lill,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
•' 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Scrvice Center at 1-800-358-9616, or
A lv.fema.gov.
online at http:Hvv.
•'• List a wetland type that best describes Nvetland to be impacted (e.g., freshwater/saltwater marsh, forested %vetland, beaver pond,
Carolina Bay, bog, ctc.)
List the total acreage (estimated) of all existing wetlands on the property: 0 acres
Total area of wetland impact proposed: 0 acres
Page 4 of 9
11/29/2005 15:18 FAY 4108922164 CLEAR CREEKS
3. Individually list all intermittent and perennial stream impacts below:
0004
Stream Tmpact
Site Number
indicate on ma)
Type of Impact" Length of
Impact
linear feet
Stream Name" Average Width
of Stream
Before Impart Perennial or
Intermittent?
leasespecify)
IT Temporary 405 Unnamed Tributary 6 - 8 ft Tntermincut
1P Permanent 175 Unnamed Tributary 6 - 8 ft Intermittent
PT Temporary 45 Unnamed Tributary 8 - 10 ft Perennial
PP Permanent 175 Unnamed Tributary 25 - 30 ft Perennial

• List cacb impact sepanuely and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap.
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
:;u Jilntion activities (cement wall, rip-rap, crib wall gabious, etc.), excavation ditching/sttaightcaing, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
Cumulative impacts (linear distance in feet) to all streams on site: 800 feet-
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean
and any other water of the U.S.) below:
Open Water Impact
Site Number
indicate on ma
Type of Impact' Area of
Impact
(acres) Name of Waterbod
(if applicable) y Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.)

5. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be included
above in the wetland and stream impact sections. Also, the proposed pond should be described here
and illustrated on any maps included with this application.
Pond to be created in (check all that apply): Z uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down
valve or spillway, etc.): The pond will be excavated and an earthen embankment constructed.
Embankment will have an impervious core, a 12 inch low flow pipe for drawdown and a concrete
weir spillway with a boulder cascade outfall channel.
Proposed use or purpose of pond: The stormwater wetland pond is an integral part of the restoration
effort and will provide water quality and water quantity (1-2 YR storms) management for highly
urbanized watershed upstream of stream project.
Size of watershed draining to pond: 39.22 acres Expected pond surface area: 22,850 sq R
Page 5 of 9
VIL Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
The general restoration approach includes installing a stormwater wetland pond to provide water
quality and quantity management for a highly urbanized watershed and reconstructing reaches of
the Unnamed Tributary to reestablish meanders, reconnect the channel with the floodplain, and
stabilize eroding bed and banks.
The temporary impacts associated with mechanical clearing are limited to those stream banks
where grading is essential to establish stable channel geometry. All disturbed areas impacted
within the limits of the project will be seeded with native grasses and planted with native trees
and shrubs. All disturbed areas impacted outside the limits of the project will be seeded with
grasses and clover.
The permanent impacts are associated with fill. The majority of the fill placed will involve
backfilling of old channels after new channels have been constructed. Some sections of the
existing channels that remain will be reconstructed by raising the streambed to reconnect the
channel to its floodplain and reconstructing narrower cross-section to improve habitat and
sediment transport. In addition, log-boulder step-pools will be constructed along the lower reach
where the streambed will be raised significantly. Avoidance of these impacts would be
inconsistent with many of the objectives of this project including: reconnecting the stream
channels with their floodplain, improving habitat by constructing a narrower and deeper
baseflow channel, improving sediment transport capacity, reducing sedimentation, and protecting
the stream banks from scour.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
Pap 6 of 9
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o.enr.state.nc.us/ncwetlands/strmqide.llttiii.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
Given the type of project it is not anticipated that mitigation will be required. In fact, the
project itself could be viewed as mitigation for historic land use impacts to the Unnamed
Tributary. As a result of this project 39.22 acres of highly urbanized watershed will be
managed for water quality and quantity, 0.5 acres of wetlands will be created, 500 feet of
eroding gully and 800 feet of eroding stream channel will be stabilized, and sediment and
nutrient loadings to the West Fork of the Deep River resulting from eroding banks and
eroding gullies will be significantly reduced. In addition, the Koerner Place Retirement
Community will establish a conservation easement that permanently protects the stormwater
wetlands and stream corridor.
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that
you would like to pay into the NCWRP. Please note that payment into the NCWRP must be
reviewed and approved before it can be used to satisfy mitigation requirements. Applicants
will be notified early in the review process by the 401/Wetlands Unit if payment into the
NCWRP is available as an option. For additional information regarding the application
process for the NCWRP, check the NCWRP website at http://li2o enr.st ite.nc iis/NNro/index.litm. If
use of the NCWRP is proposed, please check the appropriate box on page three and provide
the following information:
Amount of stream mitigation requested (linear feet): 0 ft
Amount of buffer mitigation requested (square feet): 0 ft2
Amount of Riparian wetland mitigation requested (acres): 0 acres
Amount of Non-riparian wetland mitigation requested (acres): 0 acres
Amount of Coastal wetland mitigation requested (acres): 0 acres
Page 7 of 9
IX.
X.
Environmental Documentation (DWQ Only)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federaUstate) land?
Yes ® No ?
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No
Proposed Impacts on Riparian and Watershed Buffers (DWQ Only)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Yes El No ® If you answered "yes", provide the following information:
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* Impact
(square feet) Multiplier Required
Mitigation
1 3
2 1.5
Total
* Zone 1 extends out 30 feet perpendicular from near bank: of channel; Gone 2 extends an
additional 20 feet from the edge of Zone 1.
Page 8 of 9
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 213 .0242 or .0260.
XI. Stormwater (DWQ Only)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
XH. Sewage Disposal (DWQ Only)
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.
XM. Violations (DWQ Only)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Page 9 of 9
'11/29/2005 15:18 FAX [phone] CLEAR CREEKS 0009
C Mr. Daryl Lamb, NCDWQ
Mr. John Thomas, USACOE
Mr. Charles Anderson, Pilot View RC&D
Mr. Rocky Powell, Clear Creeks Consulting
Mr. Christopher Stepp, CNA Engineers
i'
'North Carolina Housing Foundation, Inc.
A non-profit development corporation providing affordable housing for North Carolina's citizens.
Mr. Ian McMillan
401 Oversight and Express Permits Unit
2321 Crabtree Boulevard
Raleigh, NC 27604
Re: Koerner Place Retirement Community Stream Restoration
Action ID: 200620093 County: Forsyth
Dear. Mr. McMillan:
On November 22, 2005 Mr. Daryl Lamb, North Carolina Division of Water Quality met
on-site with our consultants Mr. Rocky Powell, Clear Creeks Consulting and Mr. Carl
Corse, CNA Engineers to discuss the above referenced project. Based on the findings of
that field meeting Mr. Lamb indicated that NCDWQ will require written authorization to
approve the project under WQ Certification 3495 which covers the placement of fill in
perennial stream channels and stream work involving more that 500 feet of stream bank.
Per Mr. Lamb's direction, I am forwarding an Updated Pre-Construction Notice for the
above referenced project as well as a $475 application fee. You will note on Page 5 of the
Updated Pre-Construction Notice the 500 linear feet of ephemeral channel has been
dropped from the stream impacts table. Only those impacts to jurisdictional waters are
shown in the revised table. These impacts total 800 linear feet of which 350 linear feet are
permanent.
It is my understanding that upon submittal of this revised impact table and the $475 permit
fee your agency will be able to issue the necessary approval letter for this project. I
appreciate your assistance in moving our project forward. I you need additional information
pleas contact me at my office [phone] Ext. 100.
Sincerely,
ASandra Jenn'
gr,wu..=ww - ??
3 Nest Third Street, Suite 565 It Winston-Salem, NC 27101-3923 It tel [phone] fix 336.725.0460 It nchsm.org
1 1/ r V/ 6 V V V L V. L V 1 n A IA. V V 0 4 L 1 V Y V L L A a V A L L 11 J
C Mr. Daryl Lamb, NCDWQ
Mr. John Thomas, USACOE
Mr. Charles Anderson, Pilot View RC&D
Mr. Rocky Powell, Clear Creeks Consulting
Mr. Christopher Stepp, CNA Engineers
W-JVVJ
Office Use Only: Form Version February 2002
USACE Action ID No. DWQ No.
If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than
leaving the space blank.
1. Processing
1. Check all of the approval(s) requested for this project:
® Section 404 Permit
? Section 10 Permit
® 401 Water Quality Certification
? Riparian or Watershed Buffer Rules
2. Nationwide, Regional or General Permit Number(s) Requested: NW - 27
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here:
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (see section VIII - Mitigation), check here: ?
H. Applicant Information
1. Owner/Applicant Information
Name: Sandra Jennings, President
Mailing Address: North Carolina Housing Services & Management Corp.
8 West Third Street Suite 565
Winston-Salem NC 27101
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: [e-mail]
2. Agent Information (A signed and dated copy of the Agent Authorization letter must be
attached if the Agent has signatory authority for the owner/applicant.)
Name: Rocky Powell
Company Affiliation: Clear Creeks Consulting
Mailing Address: 1317 Knopp Road
Jarrettsville MD 21084
Telephone Number: [phone] Fax Number: Same
E-mail Address: [e-mail]
Page 1 of 9
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Koerner Place Stream Restoration
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): 6885-69-6509:6885-79-1718:6886-70-0755
4. Location
County: Forsyth Nearest Town: Kernersville
Subdivision name (include phase/lot number):
Directions to site (include road numbers, landmarks, etc.): Take Business Route 40
To Rte 66 Exit head south approximately 1/2 mile turn left on Birch Lane, follow into
Koerner Place Retirement Community
5. Site coordinates, if available (UTM or Lat/Long):
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Describe the existing land use or condition of the site at the time of this application:
Upper reaches of pro-ect, on Sunlight Baptist Church property, are mowed lawn cemetery.
and wooded along rear property boundary The middle and lower reaches at the rear of the
retirement community is a wooded stream corridor.
7. Property size (acres): Church property - 2.25 acres Retirement Community - 21.39 acres
8. Nearest body of water (stream/river/sound/ocean/lake): West Fork of the Deep River
9. River Basin: Cape Fear River
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/maps .)
Page 2 of 9
10. Describe the purpose of the proposed work:
Install an extended detention stormwater wetland pond on adjacent church property to
provide water quality and water quantity management for a highly urbanized watershed.
Stabilize 500 feet of eroding ephemeral channel, 580 feet of eroding intermittent channel,
and 220 feet of a deeply incised perennial stream along the rear of the retirement community
property.
11. List the type of equipment to be used to construct the project:
Tracked excavators with hydraulic thumbs, tracked trucks and tracked loaders, dump trucks
and misc. small trucks.
12. Describe the land use in the vicinity of this project:
Although the stream corridor along the middle and lower project reaches is wooded, the
dominant land use in the watershed is commercial (retail shopping centers, small businesses,
car dealerships, gas stations, restaurants, etc. ) concentrated along Route 66; with mowed
lawns, a cemetery, and gravel parking lots on the adjacent church property; old field and
grasslands on adjacent vacant lots to the north; and moderate-density multi-family residential
and parking within the retirement community property.
IV. Prior Project History
if jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
A pre-application meeting was held on-site September 29, 2005 to present the project to the
permitting agencies. The following persons were in attendance: Mr. John Thomas, USACOE;
Mr. Rocky Powell, Clear Creeks Consulting, and Mr. Carl Corse, CNA Engineers.
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
None anticipated
Page 3 of 9
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
1. Provide a brief written description of the proposed impacts:
Temporary impacts include: 1) Removal of existing vegetation at the rear of the church
property to install stormwater wetland pond and at various points along the ephemeral and
intermittent channels at the rear of the retirement community to allow grading, sloping, and
matting of the banks.
Permanent impacts include: 1) Placement of fill along 175 feet of deeply incised perennial
stream toraise the streambed, reconnect the channel with its floodplain and provide grade
control by installing log-boulder step pools; and 2) placement of fill in abandoned
intermittent channel sections after constructing a new channel that is reconnected to the
floodplain.
2. Individually list wetland impacts below:
Wetland Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
acres Located within
100-year Floodplain**
(es/no Distance to
Nearest Stream
linear feet
Type of Wetland***

* List each impact sepamtely and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, gmdmg, fill,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
* * 100-Year floodplain are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http://Nvww. fema. gov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.)
List the total acreage (estimated) of all existing wetlands on the property: 0 acres
Total area of wetland impact proposed: 0 acres
Page 4 of 9
11/40t4v VJ 1J.10 rAA iivvv44IV9 %.LLAA %.ALLAJ
3. Individually list all intermittent and perennial stream impacts below:
LFJ V V Y
Stream impact
Site Number
indicate on ma)
Type of Impacts Length of
Impact
linear feet
Stream Name" Average Width
of Stream
Before impact Perennial or
Intermittent?
leasespecify)
IT Temporary 405 Unnamed Tributary 6 - 8 ft Intermincut
1P Permanent 175 Unnamed Tributary 6 - 8 ft intermittent
PT Temporary 45 Unnamed Tributary 8 - 10 ft Perennial
PP Pcrmancnt 175 Unnamed Tributary 25 - 30 ft Perennial

• List each impact sepanatly and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet bcfor and after, and nct loss/gain),
siubaiuuioa activities (cement wall, rip-rap, crib wall, gabions, ctc.), excavation. ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams mast be included
Cumulative impacts (linear distance in feet) to all streams on site: 800 feet-
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean
and any other water of the U.S.) below:
Open Water Impact

Site Number
indicate on ma

Type of Impacts Area of

Impact
(acres)
Name of Watcrbod
(if applicable) y Type of WateAWy

(lake, pond, estuary, sound,
bay, ocean, etc.)

5. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be included
above in the wetland and stream impact sections. Also, the proposed pond should be described here
and illustrated on any maps included with this application.
Pond to be created in (check all that apply): 0 uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down
valve or spillway, etc.): The pond will be excavated and an earthen embankment constructed.
Embankment will have an impervious core, a 12 inch low flow pipe for drawdown and a concrete
weir spillway with a boulder cascade outfall channel.
Proposed use or purpose of pond: The stormwater wetland pond is an integral part of the restoration
effort and will provide water quality and water quantity (1-2 YR storms) management for highly
urbanized watershed upstream of stream project.
Size of watershed draining to pond: 39.22 acres . Expected pond surface area: 22,850 sq ft
Page 5 of 9
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
The general restoration approach includes installing a stormwater wetland pond to provide water
quality and quantity management for a highly urbanized watershed and reconstructing reaches of
the Unnamed Tributary to reestablish meanders, reconnect the channel with the floodplain, and
stabilize eroding bed and banks.
The temporary impacts associated with mechanical clearing are limited to those stream banks
where grading is essential to establish stable channel geometry. All disturbed areas impacted
within the limits of the project will be seeded with native grasses and planted with native trees
and shrubs. All disturbed areas impacted outside the limits of the project will be seeded with
grasses and clover.
The permanent impacts are associated with fill. The majority of the fill placed will involve
backfilling of old channels after new channels have been constructed. Some sections of the
existing channels that remain will be reconstructed by raising the streambed to reconnect the
channel to its floodplain and reconstructing narrower cross-section to improve habitat and
sediment transport. In addition, log-boulder step-pools will be constructed along the lower reach
where the streambed will be raised significantly. Avoidance of these impacts would be
inconsistent with many of the objectives of this project including: reconnecting the stream
channels with their floodplain, improving habitat by constructing a narrower and deeper
baseflow channel, improving sediment transport capacity, reducing sedimentation, and protecting
the stream banks from scour.
VIIL Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
Page 6 of 9
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o.enr.state.ne.us/ncwetlands/strm.gide.html.
Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
Given the type of project it is not anticipated that mitigation will be required. In fact, the
project itself could be viewed as mitigation for historic land use impacts to the Unnamed
Tributary. As a result of this project 39.22 acres of highly urbanized watershed will be
managed for water quality and quantity, 0.5 acres of wetlands will be created, 500 feet of
eroding gully and 800 feet of eroding stream channel will be stabilized, and sediment and
nutrient loadings to the West Fork of the Deep River resulting from eroding banks and
eroding gullies will be significantly reduced. In addition, the Koerner Place Retirement
Community will establish a conservation easement that permanently protects the stormwater
wetlands and stream corridor.
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that
you would like to pay into the NCWRP. Please note that payment into the NCWRP must be
reviewed and approved before it can be used to satisfy mitigation requirements. Applicants
will be notified early in the review process by the 401/Wetlands Unit if payment into the
NCWRP is available as an option. For additional information regarding the application
process for the NCWRP, check the NCWRP website at http:/m2o enr.st ite.nc.tis/Nvm/indcx.htm. If
use of the NCWRP is proposed, please check the appropriate box on page three and provide
the following information:
Amount of stream mitigation requested (linear feet): 0 ft
Amount of buffer mitigation requested (square feet): 0 ft2
Amount of Riparian wetland mitigation requested (acres): 0 acres

Amount of Non-riparian wetland mitigation requested (acres): 0 acres
Amount of Coastal wetland mitigation requested (acres): 0 acres
Page 7 of 9
IX. Environmental Documentation (DWQ Only)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes ® No ?
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No
X. Proposed Impacts on Riparian and Watershed Buffers (DWQ Only)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 213 .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Yes ? No ® If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* Impact
(s uare feet) Multiplier Required
Miti ation
1 3
2 1.5
Total
• Zone 1 extends out 30 feet perpendicular from near bank of channel; Gone 2 extends an
additional 20 feet from the edge of Zone 1.
Page 8 of 9
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or.0260.
XI. Stormwater (DWQ Only)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
XII. Sewage Disposal (DWQ Only)
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.
XIH. Violations (DWQ Only)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Page 9 of 9
. ,r
-North Carolina Housing Foundation, Inc.
A non-profit development corporation providing affordable housing for North Carolina's citizens.
Mr. Ian McMillan ? Fn
W D
401 Oversight and Express Permits Unit R, 0 ?J D
2321 Crabtree Boulevard
Raleigh, NC 27604 DEC 1 2005
Re: Koerner Place Retirement Community Stream Restorat' ?ENR - STOER ATER QUALITY
???J',tyDSAtJD STR.AWATER 6RAIJCH
Action ID: 200620093 County: Forsyth
Dear. Mr. McMillan:
On November 22, 2005 Mr. Daryl Lamb, North Carolina Division of Water Quality met
on-site with our consultants Mr. Rocky Powell, Clear Creeks Consulting and Mr. Carl
Corse, CNA Engineers to discuss the above referenced project. Based on the findings of
that field meeting Mr. Lamb indicated that NCDWQ will require written authorization to
approve the project under WQ Certification 3495 which covers the placement of fill in
perennial stream channels and stream work involving more that 500 feet of stream bank.
Per Mr. Lamb's direction, I am forwarding an Updated Pre-Construction Notice for the
above referenced project as well as a $475 application fee. You will note on Page 5 of the
Updated Pre-Construction Notice the 500 linear feet of ephemeral channel has been
dropped from the stream impacts table. Only those impacts to jurisdictional waters are
shown in the revised table. These impacts total 800 linear feet of which 350 linear feet are
permanent.
It is my understanding that upon submittal of this revised impact table and the $475 permit
fee your agency will be able to issue the necessary approval letter for this project. I
appreciate your assistance in moving our project forward. I you need additional information
pleas contact me at my office [phone] Ext. 100.
Sincerely,
ASandra Jenn'

3 Nest Third Street, Suite 565 It Winston-Salem. NC 27101-3923 t1} tel [phone] It fix 336.725.0+60 15 nchsm.org
L L I V 91 -V V V AV. AV ! n A 'A L V V O L L L V% V L L A A V A L L I\ J
C Mr. Daryl Lamb, NCDWQ
Mr. John Thomas, USACOE
Mr. Charles Anderson, Pilot View RC&D
Mr. Rocky Powell, Clear Creeks Consulting
Mr. Christopher Stepp, CNA Engineers
`1L VuV
Office Use Only: Form Version February 2002
USACE Action ID No. DWQ No.
If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than
leaving the space blank.
1. Processing
1. Check all of the approval(s) requested for this project:
® Section 404 Permit
? Section 10 Permit
® 401 Water Quality Certification
? Riparian or Watershed Buffer Rules
2. Nationwide, Regional or General Permit Number(s) Requested: NW - 27
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here:
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (see section VIII - Mitigation), check here: o [2 r g UW ? Pt
11 Applicant Information l1 \!
DEC 1 2005
1. Owner/Applicant Information DENli-INATERQU;%Li1Y
Name: Sandra Jennings President nR!?n9tt:naT?k1S??ATAERW+GH
Mailing Address: North Carolina Housing Services & Management Corp.
8 West Third Street Suite 565
Winston-Salem NC 27101
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: [e-mail]
2. Agent Information (A signed and dated copy of the Agent Authorization letter must be
attached if the Agent has signatory authority for the owner/applicant.)
Name: Rocky Powell
Company Affiliation: Clear Creeks Consulting
Mailing Address: 1317 Knopp Road
Jarrettsville MD 21084
Telephone Number: [phone] Fax Number: Same
E-mail Address: [e-mail]
Page 1 of 9
M. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Koerner Place Stream Restoration
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): 6885-69-6509:6885-79-1718:6886-70-0755
4. Location
County: Forsyth Nearest Town: Kernersville
Subdivision name (include phase/lot number):
Directions to site (include road numbers, landmarks, etc.): Take Business Route 40
To Rte 66 Exit head south approximately 1/2 mile turn left on Birch Lane, follow into
Koerner Place Retirement Community
5. Site coordinates, if available (UTM or Lat/Long):
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Describe the existing land use or condition of the site at the time of this application:
Upper reaches of project on Sunlight Baptist Church property, are mowed lawn, cemetery,
and wooded along rear property boundary, The middle and lower reaches at the rear of the
retirement community is a wooded stream corridor.
7. Property size (acres): Church property 2,25 acres, Retirement Community - 21.39 acres
8. Nearest body of water (stream/river/sound/ocean/lake): West Fork of the Deep River
9. River Basin: Cape Fear River
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/maps .)
Page 2 of 9
10. Describe the purpose of the proposed work:
Install an extended detention stormwater wetland pond on adjacent church property to
provide water quality and water quantity management for a highly urbanized watershed.
Stabilize 500 feet of eroding ephemeral channel, 580 feet of eroding intermittent channel,
and 220 feet of a deeply incised perennial stream along the rear of the retirement community
property.
11. List the type of equipment to be used to construct the project:
Tracked excavators with hydraulic thumbs, tracked trucks and tracked loaders, dump trucks
and misc. small trucks.
12. Describe the land use in the vicinity of this project:
Although the stream corridor along the middle and lower project reaches is wooded, the
dominant land use in the watershed is commercial (retail shopping centers, small businesses,
car dealerships, gas stations, restaurants, etc. ) concentrated along Route 66; with mowed
lawns, a cemetery, and gravel parking lots on the adjacent church property; old field and
grasslands on adjacent vacant lots to the north; and moderate-density multi-family residential
and parking within the retirement community property.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
A pre-application meeting was held on-site September 29, 2005 to present the project to the
permitting agencies. The following persons were in attendance: Mr. John Thomas, USACOE;
Mr. Rocky Powell, Clear Creeks Consulting, and Mr. Carl Corse, CNA Engineers.
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
None anticipated
Page 3 of 9
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
1. Provide a brief written description of the proposed impacts:
Temporary impacts include: 1) Removal of existing vegetation at the rear of the church
property to install stormwater wetland pond and at various points along the ephemeral and
intermittent channels at the rear of the retirement community to allow grading, sloping, and
matting of the banks.
Permanent impacts include: 1) Placement of fill along 175 feet of deeply incised perennial
stream toraise the streambed, reconnect the channel with its floodplain and provide grade
control by installing log-boulder step pools; and 2) placement of fill in abandoned
intermittent channel sections after constructing a new channel that is reconnected to the
floodplain.
2. Individually list wetland impacts below:
Wetland Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
acres Located within
100-yearFloodplain**
(es/no Distance to
Nearest Stream
linear feet
Type of Wetland***

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http:/hvww.fema.gov.
*'* List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.)
List the total acreage (estimated) of all existing wetlands on the property: 0 acres
Total area of wetland impact proposed: 0 acres
Page 4 of 9
it/Lif/LVVO iu.io ran IIVV044104 %.LLHA %.Azzaa
3. Individually list all intermittent and perennial stream impacts below:
WJ VV t
Stream .impact
Site Number
indicate on ma)
Type of Impact" Length of
Impact
linear feet
Stream Name" Average Width
of Stream
Before impart Perennial or
Intermittent?
leasespecify)
IT Temporary 405 Unnamed Tributary 6 - 8 ft interrninent
IP Permanent 175 Unnamed Tributary 6 - 8 ft Intermittent
PT Temporary 45 Unnamed Tributary 8-1011 Perennial
PP Permanent 175 Unnamed Tributary 25 - 30 ft Perennial

• List each impact separtutly and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet bdore and after, and oct loss/gain),
btubiliuuion activities (cement wall, rip-rap, crib wall. gabions, ctc.), excavation. ditching/straiphtening, etc. If str cam relocatioa is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams mast be included.
Cumulative impacts (linear distance in feet) to all streams on site: 800 feet-
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean
and anv other water of the U.S.) below:
Open Water Impact

Site Number
indicate on ma

Type of Impact' Area of

Impact
(acres)
Name oEVI/atertiody
(if applicable) Type of Watetbody

(lake, pond, estuary, sound,
bay, ocean, etc.)

5. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be included
above in the wetland and stream impact sections. Also, the proposed pond should be described here
and illustrated on any maps included with this application.
Pond to be created in (check all that apply): g uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down
valve or spillway, etc.): The pond will be excavated and an earthen embankment constructed.
Embankment will have an impervious core, a 12 inch low flow pipe for drawdown and a concrete
weir spillway with a boulder cascade outfall channel.
Proposed use or purpose of pond: The stormwater wetland pond is an integral part of the restoration
effort and will provide water quality and water quantity (1-2 YR storms) management for highly
urbanized watershed upstream of stream project.
Size of watershed draining to pond: 39.22 acres . Expected pond surface area: 22,850 sq ft
Page 5 of 9
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
The general restoration approach includes installing a stormwater wetland pond to provide water
quality and quantity management for a highly urbanized watershed and reconstructing reaches of
the Unnamed Tributary to reestablish meanders, reconnect the channel with the floodplain, and
stabilize eroding bed and banks.
The temporary impacts associated with mechanical clearing are limited to those stream banks
where grading is essential to establish stable channel geometry. All disturbed areas impacted
within the limits of the project will be seeded with native grasses and planted with native trees
and shrubs. All disturbed areas impacted outside the limits of the project will be seeded with
grasses and clover.
The permanent impacts are associated with fill. The majority of the fill placed will involve
backfilling of old channels after new channels have been constructed. Some sections of the
existing channels that remain will be reconstructed by raising the streambed to reconnect the
channel to its floodplain and reconstructing narrower cross-section to improve habitat and
sediment transport. In addition, log-boulder step-pools will be constructed along the lower reach
where the streambed will be raised significantly. Avoidance of these impacts would be
inconsistent with many of the objectives of this project including: reconnecting the stream
channels with their floodplain, improving habitat by constructing a narrower and deeper
baseflow channel, improving sediment transport capacity, reducing sedimentation, and protecting
the stream banks from scour.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
Page 6 of 9
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
ide. html.
http://h2o.enr.state.nc.us/ncwetiands/strmP
Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
Given the type of project it is not anticipated that mitigation will be required. In fact, the
project itself could be viewed as mitigation for historic land use impacts to the Unnamed
Tributary. As a result of this project 39.22 acres of highly urbanized watershed will be
managed for water quality and quantity, 0.5 acres of wetlands will be created, 500 feet of
eroding gully and 800 feet of eroding stream channel will be stabilized, and sediment and
nutrient loadings to the West Fork of the Deep River resulting from eroding banks and
eroding gullies will be significantly reduced. In addition, the Koerner Place Retirement
Community will establish a conservation easement that permanently protects the stormwater
wetlands and stream corridor.
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that
you would like to pay into the NCWRP. Please note that payment into the NCWRP must be
reviewed and approved before it can be used to satisfy mitigation requirements. Applicants
will be notified early in the review process by the 401/Wetlands Unit if payment into the
NCWRP is available as an option. For additional information regarding the application
process for the NCWRP, check the NCWRP website at litip://li2o.enr.siite.nc.tis/wri)/index.htm. If
use of the NCWRP is proposed, please check the appropriate box on page three and provide
the following information:
Amount of stream mitigation requested (linear feet): 0 ft
Amount of buffer mitigation requested (square feet): 0 ft2
Amount of Riparian wetland mitigation requested (acres): 0 acres
Amount of Non-riparian wetland mitigation requested (acres): 0 acres
Amount of Coastal wetland mitigation requested (acres): 0 acres
Page 7 of 9
IX. Environmental Documentation (DWQ Only)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes ® No ?
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No
X. Proposed Impacts on Riparian and Watershed Buffers (DWQ Only)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Yes ? No ® If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.

Zone* Impact
(s uar
re feet)

Multiplier Required

Miff ation
1 3
2 1.5
Total
' Zone 1 extends out 30 feet perpendicular from near bank of channel; Gone 2 extends an
additional 20 feet from the edge of Zone 1.
Page 8 of 9
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or.0260.
XI. Stormwater (DWQ Only)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
XH. Sewage Disposal (DWQ Only)
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.
XIH. Violations (DWQ Only)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Page 9 of 9
Triage Check Dist
Date: 11/09/05 Project Name: Koerner Place Stream Restoration
DWQ#: 05-2029
County: Forsyth
Daryl Lamb, Winston-Salem Regional Office
To:
60-day processing time: 11/02/05 - 12/01 /0 6
From: Cyndi Karoly Telephone: [phone]
The file attached is being forwarded to you for your evaluation.
Please call if you need assistance.
? Stream length impacted
? Stream determination
Wetland determination and distance to blue-line surface waters on USFW topo maps
? Minimization/avoidance issues
? Buffer Rules (Meuse, Tar-Pamlico, Catawba, Randleman)
? Pond fill
Mitigation Ratios
? Ditching
? Are the stream and or wetland mitigation sites available and viable?
? Check drawings for accuracy
Is the application consistent with pre-application meetings?
? Cumulative impact concern

Comments: As per our discussion regarding revision of the triage and delegation processes,
please review the attached file. Note that you are the first reviewer, so this file will need to be
reviewed for administrative as well as technical details. If you elect to place this project on hold,
please ask the applicant to provide your requested information to both the Central Office in
Raleigh as well as the Asheville Regional Office. As we discussed, this is an experimental, interim
procedure as we slowly transition to electronic applications. Please apprise me of any
complications you encounter, whether related to workload, processing times, or lack of a "second
reviewer" as the triage process in Central had previously provided. Also, if you think of ways to
improve this process, especially so that we can plan for the electronic applications, let me know.
Thanks!
KOERNER PLACE
RETIREMENT COMMUNITY
STREAM AND WATERSHED ASSESSMENT
FINDINGS REPORT
.mj CLEAR CREEKS CONSULTING
1317 Knopp Road, )arrettsville, Maryland 21084 [phone]
aMlssom. sssrvftvn i IaMuaN artMNtts
KOERNER PLACE
RETIREMENT COMMUNITY
STREAM AND WATERSHED ASSESSMENT
FINDINGS REPORT
PREPARED FOR
KOERNER PLACE
AND
PILOT VIEW RC&D
PREPARED BY
CLEAR CREEKS CONSULTING
IN COLLABORATION WITH
CNA ENGINEERING
los@g%91
SEPTEMBER 2005
NOV 2 - 1005
?;?flN;D3FSiDSTOtvdr ?
Table of Contents
Project Background
Technical Report
1. Study Area
II. Scope of Studies
III. Watershed Characterization
A. Physiography and Basin Morphometry
B. Climate
C. Geology, Soils, and Land Use
D. Hydrology
1. Hydrologic Analysis
2. Bankfull Discharge Estimates
E. Hydraulic Analysis
IV-. Channel Morphology and Stability Assessment
A. Rationale
B. Verifying Bankfull Channel Field Indicators
C. Level II - Morphological Description
D. Level III - Assessment of Stream Condition
E. Findings of Channel Morphology and Stability Assessment
V. Estimating Sediment Loadings
VI. Design Criteria
VII. Restoration Approach
1
2
2
2
4
4
5
5
6
7
8
9
9
9
9
11
12
13
References
Appendix
A. Watershed Characterization Supporting Documentation
1. Watershed Map
B. Bankfull Discharge and Channel Dimensions Validation Supporting
Documentation
1. Regional Curves and Regression Equations
C. Channel Morphology and Stability Assessment Supporting
Documentation
1. Field Data Plots and Summary Table
2. BEHI Map and Summary Table
3. BEHI and Near Bank Stress Regressions
4. Photographic Documentation of Existing Conditions
D. Hydrologic/Hydraulic Spreadsheets
E. Restoration Design Preliminary Concept
1. Design Criteria Summary Table
2. Surveyed Stable Cross-sections
3. Plan View and Typical Cross-sections
PROJECT BACKGROUND
Koerner Place Retirement Community in Kernersville, North Carolina has had
ongoing stream channel erosion and flooding problems. Between 1996 and
1998 Koerner Place approached the Town of Kernersville, the North Carolina
Department of Transportation (NCDOT) and the USDA, Natural Resource
Conservation Service (NRCS) requesting assistance to correct the erosion and
flooding problems. Although NCDOT and NRCS evaluated the site and provided
recommendations for corrective actions, engineering resources and funding were
not available to assist the community.
Between 1998 and 2001 significant private funds were expended in unsuccessful
attempts to stabilize the worst sections of the channel and protect the residences
adjacent to the stream. In late 2001, Koerner Place approached Pilot View
RC&D for assistance. Pilot View accepted Koerner Place as a project and in
2002 began working with community representatives to secure funding and
contract engineering design and construction services.
The streams that drain Koerner Place property are unnamed tributaries to the
West Fork Deep River which is part of the Cape Fear River system. The
hydrologic regime of the tributaries has been historically altered by development
in the headwaters. The channels in the headwater areas have adjusted in
response to the alterations in watershed hydrology by incising (i.e., down-
cutting), widening, and eroding laterally. In its current degraded condition the
stream represents a long-term maintenance issue as continued erosion could
impact utilities, footbridges, yards, and residences along the stream corridor. In
addition, the degraded conditions detract from the aesthetic appeal the wooded
stream corridor provides the residents of this community.
It is Koerner Place and Pilot View's intention to correct the stream channel
instability problems, reduce flooding problems, improve water quality, protect
infrastructure, and reduce the loss of private land by implementing an effective,
long-term restoration plan for the stream within the Koerner Place Retirement
Community.
TECHNICAL REPORT
1. Study Area
The study area for the current project includes the storm drain 'outfall at Route
66, the 500 feet of ephemeral channel that runs along the south side of the
Sunlight Baptist Church property, the 580 feet of intermittent channel that
traverses the Koerner Place Retirement Community property from the west
property boundary to the concrete flume in the middle of the stream corridor, and
the 220 feet of perennial channel that flows from the downstream end of the
concrete flume to the confluence with the northern tributary that enters just
upstream of the east property boundary of the retirement community (Fig 1).
II. Scope of Studies
Existing data was collected and field studies were conducted to: evaluate the
current conditions along the streams on the Koerner Place site; determine which
reaches to restore and the extent of the restoration effort required; develop
reliable estimates of the design discharge(s) and other design parameters that
will guide the preparation of restoration design plans, and satisfy permitting
requirements. This study did not include wetland delineations, identification of
significant plant or animal habitat, archeological or historical studies, or other
environmental studies that may be required by local, state or federal permitting
agencies.
III. Watershed Characterization
Existing information on watershed characteristics and land use was collected,
compiled and reviewed. The data collected included: topographic, soils, geology,
and land use maps; meteorological data; hydrologic and hydraulic data; and
published technical reports. The following characterization of the watershed
draining to Koerner Place was developed from this information.,
A. Physiography and Basin Morphometry
Koerner Place's watershed straddles Route 66 just south of Route 40 (Business)
in the Town of Kernersville. The Town of Kernersville is located in eastern
Forsyth County in the west-central section of North Carolina. This region is
situated along the eastern edge of the Western Piedmont physiographic province
and is characterized by gently rolling to hilly topography.
The total watershed area at the downstream end of the project is 45.8 acres. For
purposes of this current study the watershed draining to the project reaches is
divided into two sub watersheds.
2

•
/ , Koemar Plaoe i
?? ?- i
r-., Retirement Community

. .
`
,
- ---
_ .
?
- : '
{
I sunlight Oaptlst. CPq '
,
i
i
h •t

e Fig. 1 Koerner Place Retirement Community Study Area
The upper subwatershed, which includes all of the area draining to the property
boundary between the church and the retirement community, is 39.22 acres.
This portion of the watershed is characterized by gently rolling to moderately
sloping topography with slopes ranging from 2% to 10%. The channel to this
point is ephemeral.
The lower subwatershed, which includes the area draining to the downstream
end of the project reach where it joins with the northern tributary at the rear of the
retirement community property, contributes an additional 6.58 acres. This portion
of the watershed is characterized by moderately steep to steep topography with
slopes ranging from 6% to 25%. The channel along this section is intermittent
transitioning to perennial. The valley bottom throughout the project area is
e
e
e
•
•
•
e
e
•
•
e
•
•
e
e
relatively narrow, confined by adjacent hill slopes. The overall slope of the
project reaches is approximately 5.0%.
B. Climate
The climate of North Carolina is determined by its location in the warm temperate
zone, but is modified by three important factors: the proximity of the Atlantic
Ocean to the east, the distance of the state from the prevailing course of cyclonic
storms, and the gradual rise in elevation of the land towards the west to the
summit of Mt. Mitchell. Unlike the Coastal Plain, in the Western Piedmont
extremes of temperature become greater and rainfall is less. Forsyth County
experiences moderate winters and warm summers. Mean annual temperature is
58° F. Mean monthly temperatures range from 32 to 50°F in January and 68 to
88 in July.
There are no distinct wet and dry seasons. Most of the rainfall during the
growing season comes from summer thunderstorms, but may vary widely from
place to place and from season to season. Winter rainfall results mostly from
low-pressure storms moving through the area and is less variable than summer
rainfall. Mean annual precipitation is 44.2 inches, with mean monthly
precipitation varying from a low of 2.8 inches in November to a high of 4.6 inches
in July.
Some snow falls every winter, with total amounts ranging from 1 inch to 2 feet.
Mean annual snowfall is 9 inches. Generally, only a few inches accumulate at
one time, and such accumulations usually melt within a few days.
C. Geology, Soils, and Land Use
According to the North Carolina Geological Survey, Kernersville is located within
the Inner Piedmont Belt, which consists of a variety of metamorphic and igneous
bedrock formations. More specifically, the study area is underlain by Cenozoic
biotite gneiss and schist rock, which is described as inequigranular, locally
abundant potassic feldspar and garnet; interlayered and gradational with calc-
silicate, sill imanite-mica schist, mica schist, and amphibolite (NCGS, 1998). It
also contains small masses of granitic rock.
The dominant upland soils weathered from these rocks are Pacolet and Cecil
loamy soils. These soils are moderately deep, well drained soils. Cecil soils
have a sandy loam surface layer and clay loam subsoil. Moderate permeability,
low surface runoff, and slight erosion hazard characterize these soils. Pacolet
soils have a fine sandy loam surface layer and clay loam subsoil. Moderate to
low permeability, rapid to very rapid surface runoff, and slight to severe erosion
hazard characterize these soils. The description of the Pacolet Complex soils
included in the Forsyth County Soil Survey (USDA - SCS, 1976) provides a
reasonable characterization of the field conditions along the middle and lower
4
project reaches, "typically this complex has three to nine gullies per acre, and
these are 2 to 12 feet deep".
Although the stream corridor along the middle and lower project reaches is
wooded, the dominant land use in the watershed is commercial (retail shopping
centers, small businesses, car dealerships, gas stations, restaurants, etc. )
concentrated along Route 66; with mowed lawns, a cemetery, and gravel parking
lots on the adjacent church property; old field and grasslands on adjacent vacant
lots to the north; and moderate-density multi-family residential and parking within
the retirement community property.
D. Hydrology
One of the critical steps necessary for any geomorphic stream design project is
developing accurate estimates of the flow regime, particularly the bankfull
discharge.
1. Hydrologic Analysis
A hydrologic analysis was conducted to develop estimates of the 1-, 2-, 10-, 50-
and 100-year 24-hour peak discharge rates for segments along the project
reaches. The hydrologic analysis was conducted utilizing the methodology
detailed in the U.S.D.A. Soil Conservation Service Technical Release 55 (TR55)
for developing runoff curve numbers (RCN) and Time of concentrations (Tc). The
data obtained with TR-55 was then modeled utilizing the U.S.D.A. Soil
Conservation Service Technical Release 20 (TR-20) for hydrograph routing to
obtain peak discharge values for the existing and proposed conditions. The
results of the hydrologic analysis were utilized as one method for validating
design discharge estimates, as well as providing hydraulic model inputs. Table 1
shows the existing hydrologic parameters and estimated range of flows varying in
frequency from the 1-year to the 100-year discharge at the downstream limits of
the two project study reaches.
Reach DA RCN Tc 1-YR 2-YR 10-YR 50-YR 100-YR
(acres) (hrs) Peak Peak Peak Peak Peak
Discharge Discharge Discharge Discharge Discharge
cfs cfs cfs cfs cfs
DA 01/
SP 01 39.22 80 0.31 51 67 122 174 204
DA 02 6.56 62 0.47 2 4 10 18 22
SP 02 45.80 - - 55 70 133 192 225
Table 1 - Existing Conditions Hydrologic Parameters and Flood Frequency Flows
The results of the Proposed Conditions hydrologic analysis is presented in the
Conceptual Design Section of this report. Output files from the TR55 computer
program, TR-20 computer program, along with a drainage area map are included
in the Appendix to this report.
2. Bankfull Discharge Estimates
Three methods were used to develop bankfull discharge estimates. These
included 1) regional regressions for rural and urban watersheds in North Carolina
developed by USGS, 2) regional curves for rural and urban watersheds in North
Carolina developed by NCSU and USDA - NRCS, 3) SCS TR-55 and TR-20
Hydrologic Models, and 4) Manning's equation and field data.
a. Regional Regressions
The U. S. Geological Survey has developed regional regressions for estimating
flood magnitude and frequency for rural and urban areas in North Carolina
(USGS, 2002).
b. Regional Curves
North Carolina State University (NCSU) and the U.S. Natural Resources
Conservation Service (NRCS) cooperated to develop regional curves for the rural
Piedmont area of North Carolina (NCSU and NRCS, 1999). North Carolina State
University (NCSU) also developed regional regressions for use in urban
watersheds (NCSU, 2002).
c. U.S. D.A. Soil Conservation Service TR-20 Hydrologic Model
As part of this current study a range of flows varying in frequency from the 1-year
to the 100-year discharge was developed using the SCS TR-55 and TR-20
Hydrologic Models. The 1 and 2-year recurrence interval peak discharges were
utilized to validate the discharge estimates developed using the other two
methods.
d. Manning's Equation
Bankfull discharge estimates were developed using Manning's equation and
cross-sectional data collected in the crossover (riffle) of relatively stable reaches
along the project area. The slope used was the bankfull slope of the overall
reach, and estimates of Manning's n were developed utilizing visual observations
of the channel bottom and banks throughout the reach. The bankfull discharge
estimates are summarized in Table 3.
6
Source of Data UPS/DS UPS/DS UPS/DS
1 YR Bankfull 2 YR
cfs cfs cfs
TR - 20
(Existing) 51/55 ND 67/70
Urban
(USGS Regression) ND ND 63.2/70.7
Rural
(USGS Regression) ND ND 18.95/21.1
Urban
(NCSU Regression) ND 52.7/58.24 ND
Rural
(NCSU/NRCS ND 11.88/13.35 ND
Regression)
Manning's Equation
ND 48.5 - 50.4/58.6 - ND
64.6
Table 3 - Bankfull discharge estimates (cfs) developed using three methods
The bankfull discharge estimates developed using the NCSU urban regressions
compare favorably with the Manning's equation estimates. Both estimates are
close to the 1-Year recurrence interval flood flows developed with the TR-20
model. Although slightly higher than the bankfull estimates, the 2-Year
recurrence interval flood flows developed with the TR-20 model compare
favorably with the 2-Year recurrence interval flood flow estimates developed
using the USGS urban regression.
Based on this analysis it was determined that utilizing the NCSU urban
regressions provides a reliable method for estimating existing bankfull discharge.
The NCSU rural regressions were utilized as a method for developing target
Bankfull discharges in designing the proposed stormwater management facility.
The results of the Proposed Conditions hydrologic analysis is presented in the
Conceptual Design Section of this report.
E. Hydraulic Analysis
The purpose of the hydraulic study was to analyze changes in water surface
elevations, channel velocities and other pertinent hydraulic parameters
associated with the proposed channel modifications. Existing conditions 1-, 2-,
10-, 50-, and 100- year flow values listed in Table 1 were incorporated into a
steady state, one-dimensional hydraulic analysis utilizing the standard step
approach. This was performed using the U. S. Army Corps of Engineers HEC-
7

• RAS computer modeling program. Input data that was used in the analysis
includes field-run topography with 1-foot contour intervals in the channel and
over bank areas. Post-restoration conditions will be modeled for the same flow
events.
- The maps showing the channel/floodplain cross-section locations, the 1-year
through 100-year water surface cross-section profiles and output files from the
HEC-RAS analysis are included in the Appendix of this report.
The hydraulic parameters calculated by the HEC-RAS model indicate conditions
consistent with those revealed by field investigations. The 1-, 2-, and 10-year
storm velocities and shears lie in the upper range of normal for a stream channel
contained within primarily sandy loam soils. These values show that active
erosion is likely occurring, especially in the lower reaches where velocities
approach, and exceed, a supercritical flow condition.
Flood flows (those flows associated with the 2-year to 100-year storm events)
spread to the adjacent floodplain in the upper reach, but are contained
completely within the active channel in the lower reach. This condition creates
higher velocities and shear forces and results in mass wasting and other erosive
characteristics within the channel, as exhibited in the actual field conditions.
IV. Channel Morphology and Stability Assessment
A. Rationale
Stream stability is morphologically defined as the ability of the stream to
maintain, over time, its dimension, pattern and profile in such a manner that it is
neither aggrading or degrading and is able to effectively transport the flows and
sediment delivered to it by its watershed. Morphologic stability permits the full
expression of natural stream characteristics.
Stream potential is defined as the best condition, based on quantifiable
morphological characteristics, for a given stream type. Streams functioning at full
potential exhibit a desired or preferred set of stability or condition characteristics
that may be quantitatively described in terms of channel size and shape, bed
stability/vertical control, and bank stability/lateral control - low bank erosion
potential and gradual lateral migration rates.
Stream classification as a morphologic stream assessment technique permits a
quantitative analysis of the degree to which existing conditions differ from an
accepted range of morphological values documented for different stable stream
types. The degree of departure for an existing stream condition from its full
stable operating potential can be determined in a number of ways including
comparisons to: 1) geomorphologic databases; 2) historical photography or

surveys of the same reach; and 3) stable reference reaches of the same stream
type at different points in the watershed or adjacent watersheds.
B. Verifying Bankfull Channel Field Indicators.
Existing regional regressions developed in the urban Piedmont Region of North
Carolina (NCSU, 2002) for bankfull channel field indicators were utilized to verify
field indicators associated with the bankfull channel in conducting the
geomorphic stream assessments along the project reaches.
C. Level II - Morphological Description.
The stream reaches within the study area were classified into specific categories
of stream types (i.e., 134c, E4, G4, etc.) utilizing the standard field procedures
recommended by Rosgen (1996). The cross-section, profile, pebble count data
plots, and Level II Field Data Summary Tables are included in the Appendix to
this report.
D. Level III - Assessment of Stream Condition and Departure from Potential
The stream reaches within the study area were assessed for stream channel
condition and influencing factors including riparian vegetation, meander pattern,
depositional pattern, debris and channel blockages, sediment supply, vertical
stability, and stream bank erosion potential. The Level III Inventory Form:
Summary of Condition Categories and Bank Erosion Hazard Index Summary
Table completed for this study area is included in the Appendix to this report.
E. Findings of Channel Morphology and Stability Assessment
1. General
The current conditions along the project reaches can be characterized as very
unstable with localized areas of stability. These instability problems can be
directly attributed to historic alterations of watershed hydrology associated with
development as well as current land use management and maintenance
practices within the retirement community. Conditions will worsen unless existing
channel problems are corrected and best management practices are
implemented to control runoff. Any additional development within the watershed
will exacerbate already unstable conditions unless best management practices
are incorporated into development plans.
Utilizing the data collected from the Level II stream classification and Level III
channel condition assessment the current condition of the project reaches and
the degree to which the existing condition of the reaches differ from an accepted
range of morphological values documented for similar stable stream types was
9
evaluated. The direction, rate and nature of the channel adjustments were also
evaluated.
An analysis of the data collected during this field effort indicates that'widely
varying conditions exist along the project reaches. The following is a summary of
the findings of that analysis as it relates to the existing conditions within the
project study area:
2. Storm Swale and Ephemeral Gully
An ephemeral channel conveys storm flows from the storm drain outfall at Route
66 across the south side of the Sunlight Baptist Church property emptying onto
the west property boundary of the retirement community. Along its upper
sections it is a broad shallow swale. However, it forms a narrow, well defined
channel just a short distance from the outfall. Numerous head cuts have formed
along its 500 foot length. Observations over a two year period indicate that the
head cuts are migrating upstream and the channel is increasingly unstable. The
channel plan form is characterized by low sinuosity. Currently lateral erosion
rates appear low with the overall condition of this channel characterized by
vertical instability and high sediment supply.
3. Upper Project Reach
The upper reach is an unstable C4-transitioning to a G4 stream channel.
Numerous head cuts were evident throughout the middle and upper sections of
the reach. Observations over a two year period indicate that the head cuts are
migrating upstream and channel conditions are increasingly unstable. Although
the channel cross-section of the reach is consistent with C geometry, as the bed
continues to incise and bank height to bankfull ratios increase, the low width to
depth ratio typical of G channels is developing. Pools immediately downstream
of the head cuts are generally deep and riffles shallow. Riffle and pool slopes
are steep. The channel plan form is characterized by low to moderate sinuosity
with very few tight meander bends.
The middle section of the reach was modified by the retirement community's
grounds maintenance staff when they cut a new channel in an attempt to reduce
the flooding and sediment deposition that was routinely occurring during
relatively frequent storm events. In an attempt to prevent the significant erosion
occurring along the lower reach from migrating upstream the retirement
community installed a concrete flume several years ago. The flume is providing
grade control for the lower section of this reach. Tree roots are providing
temporary grade control for some of the head cuts in the middle and upper
sections. The overall condition of the reach is characterized by increasing
vertical instability, high sediment supply, and low to moderate lateral erosion.
10

Exposed tree roots and numerous flow rills, along the floodplain in this reach
indicates that out of bank storm flows are occurring frequently. This is likely the
result of a channel that has insufficient capacity to convey the large volumes of
storm water generated by a highly impervious watershed and the discharge of
stormwater from roof downspouts and parking areas conveyed directly onto the
floodplain surface.
4. Lower Project Reach
The lower reach is an unstable G4 transitioning to a B4 stream channel. The
channel cross-section of the upper section is consistent with stable B geometry,
the cross-sections throughout most of the reach, where bank height to bankfull
ratios are higher, are characterized by a low width to depth ratio more typical of
G channels. Pools are generally shallow and riffle and pool slopes are steep.
The channel plan form is characterized by high sinousity with two very tight
meander bends in the middle of the reach. Typical of G channels, the overall
condition of this reach is characterized by very high - extreme bank erosion rates
and very high sediment supply. Although the concrete flume is providing grade
control for the lower section of the upper reach it is having a detrimental effect on
the lower reach. The velocity and turbulence of storm flows is significantly
increased by the flume contributing to bed scour and lateral erosion.
Results of the stability assessment show bank height to bankfull ratios along
most of the reach range from 2.03 - 4.45. These high banks are susceptible to
erosion and gravitational failure. Although the bank and riparian vegetation along
this reach includes some mature trees and shrubs, there is a general lack of
lateral control to prevent continued bank erosion and channel migration. The
potential for continued bank erosion, loss of trees and channel migration is high.
Results of the stability assessment confirm that approximately 36.8% of the
banks along this reach have a high to extreme bank erosion potential.
V. Estimating Sediment Loadings
Actual loadings of sediment should be determined through a comprehensive
water quality monitoring and geomorphic assessment effort that includes
installation, survey, and resurvey of permanent cross-sections. However, the
following computations provide a reasonable method for estimating current and
future sediment loadings to West Fork Deep River.
Rosgen (1996) demonstrated that significant relations exist between stress in the
near-bank region (NBS), stream bank erosion potential (i.e., BEHI ratings) and
measured stream bank erosion rates. Utilizing relations developed for Colorado
and Wyoming streams he has been able to predict, with a high degree of
confidence, erosion rates for stream banks utilizing field data on near bank stress
and bank erosion potential.
0
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As part of this study, field data on stress in the near-bank region and bank
erosion potential (BEHI ratings) were collected for the stream banks along the
lower project reach. Utilizing the data collected from the lower project reach and
near bank stress and bank erosion potential relations developed on North
Carolina streams (USDA-NRCS and NCSU, 2002), predicted erosion rates were
calculated for the stream banks evaluated along the lower reach. Estimates for
current and future sediment loadings were developed based on the existing bank
height, length of stream bank evaluated and the predicted erosion rates.
Bank ID
# Near
Bank
Stress
Rating BEHI
Rating Bank ,
Erosion
Predicted
ft/ r Bank
Height
(ft) Bank
Length
M Annual
Sediment
Loading
ft3 /Tans
1 Very High Extreme 6.0 9.4 20 1128/56.4
2 Very High Extreme 6.0 9.8 15 882/44.1
3 Extreme Extreme 10.0 8.8 22 1936/96.8
4 Extreme Extreme 10.0 9.2 25 2300/115
5 Very High High 0.2 7.5 25 37.5/1.88
6 Extreme Extreme 10.0 7.5 30 2250/112.5
7 Very Hi h Extreme 6.0 6.5 25 975/48.8
Total NA NA NA NA NA 9508.5/475.4
Table 3 - Estimates for sediment loadings based on existing bank height, length
of stream bank evaluated and predicted erosion rates for stream banks along the
lower project reach.
The estimates presented in Table 3 below indicate that approximately 9508 cubic
feet or 475.4 tons of sediment are contributed annually to West Fork Deep River
from bank erosion along the lower project reach.
This estimate for sediment loadings does not include contributions from the
gullies, unstable upper reaches, or wash load from upland areas in the
headwater areas of the watershed. No estimates were developed for these
headwater sources. However, given the overall length and nature of the gullies,
unstable upper reaches, and highly impervious nature of the watershed it is not
unreasonable to assume that the headwater sources and unstable upper reaches
contribute a significant amount of sediment as well. Sediment from these
headwater sources is contributing to the unstable conditions along the project
reaches.
VI. Design Criteria
A. Reference Reach Data
After determining the targeted stream types (i.e., stable form for the reaches to
be restored) for the project reaches, a stable C4 reach downstream of the project
12
area was surveyed to develop cross-sectional geometry for the upper project
reach. Dimensionless ratios were taken from a reference reach data base
developed from stable B4 streams in the Piedmont of North Carolina for use in
design of the lower project reach. The surveyed cross-sections and
dimensionless ratios are presented in the Appendix to this report.
VII. Restoration Approach
As pointed out in the Findings of Channel Morphology and Stability Assessment
Section, the project reaches have been affected by alterations in watershed
hydrology associated with development in the upper watershed.
The restoration objectives for Project Reaches include:
1. Install an extended detention pond enhanced with the creation of constructed
storm water wetlands. Creating the extended detention pond will attenuate
the peak discharge rate for more frequent storms (1 - 2 yr RI) minimizing
stream channel erosion and improve the water quality of storm flows leaving
the site and entering the West Fork Deep River.
2. Modify the geometry and slope of the ephemeral channel to improve flood
conveyance and eliminate bed erosion. This will be accomplished by
reconstructing the upper section from the storm drain outfall to the inlet of the
proposed pond as a wide shallow swale with low check dams installed to slow
flow velocity.
3. Modify channel geometry and slope of the upper project reach to improve
conveyance of the more frequent storms, improve sediment transport
capacity, and eliminate bed erosion. This will be accomplished by
reconstructing unstable C4 sections as stable C4 channels.
4. Modify channel geometry and slope of the lower project reach to improve
conveyance of the more frequent storms, improve sediment transport
capacity, and eliminate bed and bank erosion. This will be accomplished by
backfilling the deep, unstable G4 sections and reconstructing them as stable
B3 step-pool channels and stable B4 channels.
The restoration approach presented above is illustrated in the preliminary design
drawings (i.e., plan view and cross-sections) attached to this report. The design
criteria are summarized in the Appendix of this report.
13
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References
1. Doll, B.A., D.E. Wise-Frederick, C.M. Buckner, S.D. Wilkerson, W. A.
Harman, R.E. Smith, and J. Spooner, 2002. Hydraulic Geometry
Relationships for the Urban Streams Throughout the Piedmont of North
Carolina. Journal of the American Water Resources Association, Vol. 38, No.
3.
2. Horton, J.W. and K.I. McConnell, 1991. The Western Piedmont in Horton,
J.W. and V.A. Zullo (eds.), Geology of the Carolinas, University of Tennessee
Press, Knoxville, TN
3. National Oceanographic and Atmospheric Administration - National Climate
Data Center Website, 2001. Annual Climatological Summary- Temperature
and Precipitation Records 1950-2000 for Greensboro Piedmont Triad
International Airport.
4. North Carolina State University, Cooperative Extension Service and U.S.D.A.
Natural Resources Conservation Service, 1999. Hydraulic Geometry
Relationships for the Rural Piedmont of North Carolina. Raleigh, N.C.
5. Rosgen, D.L., 1996. Applied River Morphology. Wildland Hydrology. Pagosa
Springs, Colorado.
6. Schueler, T.R., 1987. Controlling Urban Runoff: A Practical Manual for
Planning and Designing Urban BMPs. Metropolitan Washington Council of
Governments.
7. Schueler, T.R., P.A. Kumble and M.A. Heraty, 1992. A Current Assessment
of Urban Best Management Practices: Techniques for Reducing Non-Point
Source Pollution in the Coastal Zone. Metropolitan Washington Council of
Governments.
8. U.S. Department of Agriculture, Natural Resource Conservation Service,
1976. Soil Survey of Forsyth County, North Carolina.
9. U.S. Geological Survey, 2002. The National Flood-Frequency Program -
Methods for Estimating Flood Magnitude and Frequency in Rural and Urban
Areas in North Carolina, 2001. USGS Fact Sheet 007-00.
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APPENDIX
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WATERSHED CHARACTERIZATION!
DOCUMENTATION
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Regional Regressions
1. Rural Piedmont of North Carolina (NCSU and NRCS, 1999)
Qbf (cubic feet/sec) = 89.465 DA 0.723
CA (square feet) = 21.892 DA 0.662
W (feet) = 13.652 DA 0.381
D (feet) = 1.604 DA 0.28
2. Urban Piedmont of North Carolina (NCSU, 2002)
Qbf (cubic meters/sec) = 4.77 DA 0.63
CA (square meters) = 3.02 DA 0.65
W (meters) = 5.43 DA 0.33
D (meters) = 0.54 DA 0.33
CHANNEL MORPHOLOGY AND STABILITY
ASSESSMENT SUPPORTING DOCUMENTATION
Koerner Place
Reach Classification Summary Table
Reach DA
mil Feature CA
ft? W
ft Dm
ft W/D Ent Slope
ft/ft Q
cfs Type
1 0.061 Riffle 8.8 15.7 0.6 27.9 3.1 0.026 48.5 C4
1 Riffle 9.5 14.0 0.7 20.5 4.7 50.4
1 Pool 12.4 8.9 1.4 NA NA
1 Pool 11.3 6.8 1.7 NA NA
2 0.072 Riffle 12.3 9.2 1.3 6.8 1.5 0.03 58.6 G4/64
2 Riffle 14.2 10.5 1.4 7.71 1.6 68.1
2 Riffle 14.9 12.7 1.2 10.9 1.8 67.2
2 Pool 24.2 9.5 2.5 NA NA
2 Pool 22.3 9.8 2.3 N NA
2 Pool 25.5 8.7 2.9 NA
Parameter Field Data Urban Rural TR-20
Range Regression Regression 1-YR 2-YR
(Average)
Reach 1
XS Area 8.8-9.5 9.79 3.45
(ft) (9.15
Width 14.0-15.7 9.69 4.7
ft 14.85
Depth Mean 0.6-0.7 0.96 0.73
ft 0.65
Discharge 48.5-50.4 52.7 11.88 51 67
cfs 49.45
Reach 2
XS Area 12.3-14.9 10.86 3.84
f) 13.8
Width 9.7-12.7 10.22 5.0
ft 10.97
Depth Mean 1.2-1.4 1.02 0.77
ft 1.3
Discharge 58.6-68.1 58.24 13.35 53 70
cfs 64.6
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Reach 1 XS 1 Riffle Koemer Creek
0
-2
c
m
w -g
-10
-12
10
20
3
0

- - 5

0

!?

0

7

0

Width from River Left to Right (ft)
Koerner Creek
West Fork Deep River
of instrument

CPIN ` ¦ 0 4 2t;'
(oe Slop'e" ¦ 3 5 6,
j; • 7' 6

T ?_ " ¦ 2Q . 6 63
719 ',

39t-71 A
n;w c ¦? ?,? 43.E ? . ' 8 0,?'
43:6i f
UPP '1 ¦ 44:8"?4 83
???r .n1' ,: ¦ ?. 45? ? .9 44?.

M&P,= ".71 11111t

19,
MUM'
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low W47 9 @ •

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ME=
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8*
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?. ¦ _?i? 5 , _ > X6;3
X!F

bankfull to of
-7.83 M
IM-S.i
"n"
dimensions
8.8 x-section area 0.6 d mean
15.7 width 17.5 wet P
1.9 d max 0.5 h yd radi
1.1 bank ht 27.9 w/d ratio
49.0 W flood prone area 3.1 ent ratio
y rau ics
5.5 velocity ft/sec
48.5 discharge rate, D cfs
0.82 shear stress Ibs/ft s
0.65 shear velocity ft/sec
5.026 unit stream power (lbs/ft/sec)
1.68 Froude number
8.5 ?
riction factor u/u"
52.8 hreshold rain size mm
check from channel material
20 measured D84 mm
8.4 relative roughness 8.1 fric. Factor
0.029 Mannin 's n from channel material
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Reach 1 XS 2 Pool Koerner Creek
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-2
V
c
a-6
w 8
-10
-12
Width from River Left to Right (ft)
Koerner Creek
West Fork Deep River
of instrument
notes t. ft ft elevation
-4.6
.: ..: -5.9
-6.85
-6.71

-7.06
-7.29
-7.53
-7.67
-8.07
-8.29
-9.08
-9.55
-9.87
-9.91
f -9.66
sG. :,a -9.4
a>
-9.05
=f' -8.24
s :r -7.66
-7.53
a F - -7.28
-7.43
si -7.12
-6.21
-5.2
g F t*. -4.46
= tC *`' -3.66
fit ;# 4-"? ,' S3:h
bankfull to of
-7.67 -7.1
dimensions
12.4 x-section area 1.4 d mean
8.9 width 10.4 wet P
2.2 d max 1.2 h yd radi
2.2 bank ht 13-4
C? (1 33-7
rau ics
84 .j
1G43
1.94 shear stress Ibslft sq)
1.00 shear velocity (ft/sec)
1® 121
1-53 i
34 7 7,
2634 threshold rain size mm

0
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G GLaJ , r! c_a
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Reach 1 XS 3 Pool Koemer Creek
0
-2

J -6
f°
N
LU -8
-10
-12
Width from River Left to Right (ft)
Pool
Koerner Creek
West Fork Deep River
of instrument
sma, zzmw s m??® :: ...
LPIN f F,4. Ow 344 ,;? ,
Toe Slope. '
t# 4 92,.
60¢3

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4T'2 8 85
';G 48
TW .? ? ) ''. 50w .9.58;'
V, 9.5 WU
' ? 519"',922

fi
8 70

},` , • 41 1 M I 7-.6

L ` r:,'" ff 0 1'M 61AW, = 7:028 mnwza?
".h' . .a` f?i / ct • i :`, -6.92
r -6.47
5=
rs r5 channel
bankfufl to of bank slope
-7.41 -7.41
dimensions
11.3 x-section area 1.7 d mean
6.8 width 8.9 wet P
2.2 d max 1.3 h yd radi
2.2 bank ht 4 -?
J, 14
hydraulics

cg 9 r -,
2.07 shear stress Ibs/ft s
1.03 shear velocity ft/sec
23 7G,3

29&8 threshold rain size mm

20 a :1
13 rr 10 8
G Oz5 I ??: i
Reach 1 XS 4 Riffle Koemer Creek
0
-1
-2
-3
-4
-5
m
? -8
w
-7
-e
-9
-10
notes
of instrument
Width from River Left to Right (ft)
e
mer Creek
5t Fork Dee River
S
vation bankfull t of tK
5.62
3.69 -7.44 -7.44
-7
-7.15
-7.67
-7.71
-777
-8.31
-8.93
-8.55
-7.78
-7.44
-7.47
-7.52
-7.1
-6.72
-4.96
-3.36
dimensions
9.5 x-section area 0.7 d mean
14.0 width 14.7 wet P
1.6 d max 0.6 h yd radi
1.6 bank ht 20.5 w/d ratio
66.0 W flood rone area 4.7 ent ratio
check from channel material
20 measured D84 mm
10.2 relative roughness 8.6
0.029 Manni 's n from channel materialEric. factor
Reach 2 XS 1 Riffle Koemer Creek
0
-2
-4
-6
-8
C
S -10
.2 -12
W
-14
-16
-18
-20
Width from River Left to Right (ft)
Riffle
Koerner Creek
West Fork Deeo River
of instrument
notes
elevation I I bankfull stop of
-7.75
-7.39
-8.51
-8.95
-15.16
-15.38
-16.08
-16.81
-18.02
-18.31
-18.19
-17.86
-17.53
-17.5
-16.76
-15.25
-13.03
-8.02
-6.75
-5.28
-16.08 1 -8.95
"n"
dimensions
12.3 x-section area 1.3 d mean
9.2 width 11.1 wet P
2.2 d max 1.1 h yd radi
9.4 bank ht 6.8 w/d ratio
14.0 W flood tune area 1.5 ent ratio
hydraulics
4.8 velocity ft/sec
58.6 discharge rate, Q cfs
2.08 shear stress Ibs/ft s
1.04 shear velocity ft/sec
11.956 unit stream power (lbstft/sec)
0.53 Froude number
4.6 friction factor u/u"
393.0 threshold rain size mm
ZFe-d from channel material
20 measured D84 mm
20.0 relative roughness 10.2 fric. factor
0.026 Mannin 's n from channel material
Reach 2 XS 2 Pool Koemer Creek
0
-2
-4
-6
-8
a -10
W -12
-14
-16
-18
-20
1 0 20 _.-3 0- 40 50 60 70
t I --
1

r
l
-A
l

Width from River Left to Right (ft)
section: - .? :. vuq.
Pool
Koerner Creek
West Fork Deep River
of instrument
notes I pt. I (ft) I (ft) I elevation I I bankfull Itoo of
-7.8
-9.09
-9.63
-14.25
-14.94
-16.69
-17.65
-18.43
-18.33
-17.85
-17.55
-14.91
-14.32
-13.53
-11.03
-9.29
-7.92
-7.19
-6.3
-6.75
-6.16
-5.79
-14.94
channel I
ctnna 1011
dimensions
24.2 x-section area 2.5 d mean
9.5 width 13.2 wet P
3.5 d max 1.8 h yd radi
8.8 bank ht 3,7 r;
00 0.0
hydraulics
0.0
0-0
3.44 shear stress Ibs/ft
sq)
1.33 shear velocity ft/sec
0.000 :. r. r ;t:

00 nl i
.
884.8 threshold
rain size mm

33.0 ,i i t 1 3 .': '

•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
0
-2
-4
-6
c -8
-10
W -12
-14
-16
-18
notes
Reach 2 XS 3 Pool Koemer Creek
20 3 0 40 50

Width from River Left to Right (ft)
Pool
Koerner Creek
West Fork Deep River
of Instrument
elevation
-4.1
-5.8
-4.76
-6.75
-7.29
-7.55
-9.41
-10.29
-11.61
-12.97
-13.61
-14.47
-15.09
-15.76
-16.18
-17
-16.85
-13.69
-11.34
-in
-8.8
-7.8
-7.44
-6.9
-5.95
rs rs
bankfull top of ban
-12.97 1 -
dimensions
22.3 x-section area 2.3 d mean
9.8 width 14.0 wet P
4.0 d max 1.6 h yd radi
9.2 bank ht 4 ; _ 1c;
0.0 0.0

20
33.9
0:025 ,;; i
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
A
•
4
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
0
-2
-a
i?' -6
r-
0
-8
w -10
-12
-14
-16
notes
Reach 2 XS 4 Riffle Koemer Creek
6 6- 73

Width from River Left to Right (ft)
Riffle
Koerner Creek
West Fork Deep River
of
elevation
bankfull to of
-13.03 -9.1
"n"
-6.18
-7.4
-8.17
-11.07
-11.96
-13.02
-13.68
-14.92
-15.13
-15.03
-14.71
-14.46
-13.03
-12.46
-12.24
-10.8
-8.42
-8.55
-6.8
dimensions
14.2 x-section area 1.4 d mean
10.5 width 12.1 wet P
2.1 d max 1.2 h yd radl
5.5
L bank ht 7.7 w/d ratio
-17.0 W flood tune area 1.6 ent ratio
hydraulics
4.8 velocity ft/sec
68.1 dischar a rate, cfs
2.21 shear stress ibs/ft s
1.07 shear velocity ft/sec
12.162 unit stream power (lbs/ft/sec)
0.52 Froude number
4.5 friction factor u/u"
3394 threshold rain size mm
check from ch5nnel material
20 measured D84 mm
20.2 relative roughness 10.3 fric. factor
0.026 Mannin 's n from channel material
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
0
-2
-4
-6
-8
° -10
w -12
-14
-16
-18
-20
notes
Reach 2 XS 5 Pool Koemer Creek
Width from River Left to Right (ft)
Koemer Creek
West Fork Deep River
of instrument
elevation
-6.43
-7.7
-8.97
-9.09
v rv
bankfull top of bank

-11.38
-12.22
-15.83
-16.39
-17
-17.34
-17.35
-16.97
-14.34
-13.63
-12.32
-9.62
-8.12
-13.63
dimensions
25.5 x-section area 2.9 d mean
8.7 width 13.5 wet P
3.7 d max 1.9 h yd radi
7.5 bank ht 3.0 ,..J ..!-,3
( 345 'l 1
hydraulics
12:3
3131 :1•:,:.
3.53 shear stress Ibs/ft s
1.35 shear veloci ft/sec
6'461 t.
1 60
.
856:3 threshold
rain size mm

no
43:7 r 122
..I
0024 ,;x;
e
•
•
•
•
•
•
•
•
•
•
•
e
•
e
•
•
•
•
•
•
•
•
•
•
•
•
•
e
e
•
•
•
•
s
•
e
•
•
•
e
e
•
•
0
-2
c -8
0
a
m -10
W -12
-14
-16
-18
notes
Reach 2 XS 6 Riffle Koemer Creek
Width from River Left to Right (ft)
Koemer Creek
West Fork Deep River
of instrument
elevation
-10.34
-10.98
-12.35
-12.9
bankfull Itop of
Ann
-14.27
-15.22
-15.31
-15.17
-15.05
-14.93
-14.26
-13.73
-13.3
-12.43
-11.75
-10.7
-9.73
-10.98
dimensions
14.9 x-section area 1.2 d mean
12.7 width 13.7 wet P
2.0 d max 1.1 h yd radi
4.3 bank ht 10.9 w/d ratio
22.3 W flood prone area 1.8 ent ratio
check rom a5nnel material
20 measured D84 mm
17.4 relative roughness 9.9 fric. factor
0.027 Mannin 's n from channel material
3 m< < (D < (<D
3 3 3 m <
y N
Cr 54. 3 CD CD 3 ?L
v r Q - m m m m 3 3 m m m (Zi 7 m C
00g008 8 gg (n(n(nmED (n(n(nmm3mm0
o G. G. n G. G. ar Q Q v s @@ m q °M d d d m ni m w n
m m m m m a- cr < < < < < < < < < Ma a a na
m m m m m m m m m
o_
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a) N ZLn (A N Co 00 ONOOA VAiNN Q? .Q)OAN?
N Co A K) 0) Ln Ot W N
n
(D
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0 cp ?N ".? j W (N? c(pp pp?? O O p?
0 Qj Co ANN OONDOALn K) NO.?OOAN -+? ? W
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00 0000 A0.4 -A 0101Nt0 - O O O
00
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11 010111 1 ..
S?
rn
Cn
v m.
(n
# ik ?t it ?k ?k 3L ?t i! ?t ?k it ik ik ik 4t it
Percent Finer Than
_ J
O O O O O O O O O O O
O O O O O -1 O O O O O O
O
? o
o
S
co-0
cn
CD
W
Ln i I "
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J
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(n o o
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---------- ----
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----

_
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` - + -- r --
--- ----

::: f .

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-- --
*: -_-- -::

i i
?
------ -E
:_ -- ---------
_ . --- -
_j - - - - - - -?--------
---- -`:::_:-_-_ -
: --
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j F ....
v
m
v
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0
c
0
m
m
0
m
z
0
3
T
m
z

Koerner Creek
West Fork Dee River
Kemersville, NC
Note:
Riffle Pebble Count, Koerner Creek
100%
90%
;
80%
J
c 70%
~
60%
50%
m
40% -' - -=-- - - - -- - - =
` 30%
o_
20%
?? ?' ? ??;; i s :?
10% -
0% .
0.01 0.1 1 10 100 1000 10000
Particle Size (mm) -i-Cumulative Percent ? Percent Item
Size percent less than mm Percent b substrate type
D16 D35 D50 D84 D95 silt/clay sand ravel cobble boulder bedrock
2.194 8.49 11.6 27 40 0% 15% 85% 0% 0% 0%

°
p
i

o? co
?m
l o
•
x',

Ig?

x 0
v 1 i
x 3
O
L
y l
V .. ?
2
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n d

I g
- > ?
n
m i p
c
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d
E
g
03

o
I ?

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.
I - O
r

O
O N O h O N O N
W W W W _
0 Of W W
W u O ,enal3
Reach 2 XS 5 Pool Koemer Creek
0
-2
-4
-6
-8
c
cc
°- -10
w -12
-14
-16
-18
-20
Width from River Left to Right (ft)
Pool
Koerner Creek
West Fork Deep River
of instrument
notes
elevation
-6.43 -7.7
-8.97
-9.09
-9.83
-11.38
-12.22
-15.83
_1 Fi 34
-1/..rr
-17.35
-16.97
-14.34
-13.63
-12.32
-9.62
-8.12
-6.16
ra ra
bankfuil top of bank
-13.63 1 -9.83
dimensions
25.5 x-section area 2.9 d mean
8.7 width 13.5 wet P
3.7 d max 1.9 h yd radi
7.5 bank ht 3.0
31110 r 34 5 C
hydraulics
12-3 ?; (t!
313:1
3.53 shear stress Ibs/ft s
1.35 shear velocity ft/sec
0 7i31 !
1 60

850:3 threshold rain size mm

20
43.7 r, 12 2
0.024 :• ;-;,r ',., r ;, .r,
i
s
•
•
s
•
s
•
0
-2
-4
-6
c -8
0
> -10
0
FU -12
-14
-16
-18
Reach 2 XS 6 Riffle Koemer Creek
t
10 ,
20
30
40

Width from River Left to Right (ft)
of instrument
Riffle
Koemer Creek
West Fork Dec
W
elevation
-10.34
-10.98
-12.35
-12.9
-14.27
-15.22
-15.31
-15.17
-15.05
-14.93
-14.26
-13.73
-13.3
-12.43
-11.75
-10.7
-9.73
-9.03
River
I I . v ?• ?rw w?w?n ?V? I??wual?yo
bankfull top of ban _ (ft) slope (%) "n"
-13.36 1 -10.98 1
dimensions
14.9 x-section area 1.2 d mean
12.7 width 13.7 wet P
2.0 d max 1.1 h yd radi
4.3 bank ht
- 10.9 w/d ratio
22.3 [W
flood prone area 1.8 ent ratio
hydraulics
4.5 velocity ft/sec
67.2 discharge rate, D cfs
2.03 shear stress Ibs/ft s
1.02 shear velocity ft/sec
9.891 unit stream ower Ibs/ft/sec
0.54 Froude number
4.4 friction factor Wu"
287 threshold rain size mm
e rom ann ma ena
20 measured D84 mm
17.4 relative roughness 9.9 fric. factor
0.027 Mannin 's n from channel material
•
•
•
•
•
v
m 3 m v
3
< ca 12 <
3?d v?.N88882._? ? 3 N O
g o go Q-cu CD cu 3 3 ce a v@ > > m ..
C C C C N N N N f11 7.
° ??mCDCDCDCDCDmcDCDCDaaaaa
x
Mn 0, "M
O N a N
(D
AN N0 00 00?0NN O?ODOAN-+ ? ? W ? O x
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CD
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N
1 11
n
OO 000 OOOOAQI CC0trt71NtD ?? C1 O O C
7
:n it 3t n it :m 3t
p Percent Finer Than
rn
O O O O O 0 0 0 O 0 O O 10 0
0 0 0 0 0 0 0 0 0 0 0
0
0
o p N
w rnn W CD
a
° CD
----- --------- -
v ' `D m Q
?oa°, o m -3
`D °
= <0
m O
3 Z m
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co 3 C?v
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3
o 3 0
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rn
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CD
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lY O
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--------- -------- - -
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c
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----- --------- ----
0
o? 3ia

4 I

,

? I ' I I

I -

er Creek
Fork Deep River
c
n3
t
H
a?
c
c
a.
100%-
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
Note:
Riffle Pebble Count, Koerner Creek

?. ? _?_._? ?i ? ? ? i? ;ice.:; ? _
0.01 0.1 1 10 100 1000 10000
Particle Size (mm) -*--Cumulative Percent O Percent Item
Size percent less than mm Percent b substrate type
D16 D35 D50 D84 D95 silt/clay sand ravel cobble boulder bedrock
2.194 8.49 11.6 27 40 0% 15% 85% 0% 0% 0%
•
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Koerner Place Retirement Community
Existing Conditions

View is looking towards Sunlight Baptist Church from rear property line

View is looking at proposed location of stormwater wetland along
rear of church property

Evidence of runoff from roof downspouts at rear
of retirement community unit
View is looking toward Koerner Place from rear of church property
Primary knickpoint of gully erosion at upstream property boundary of
retirement community
Upper section of upper reach along retirement community property

?r
I
-*
Secondary knickpoint along upper reach
0

Yl
iM 1,
Middle section of upper reach
By-pass channel excavated by retirement community maintenance staff
Lower section of upper reach
Lower section of upper reach
I I

Concrete flume at downstream end of upper reach
Upper section of lower reach
Upper section of lower reach
Middle section of lower reach
Middle section of lower reach

Middle section of lower reach
Lower section of lower reach

Lower section of lower reach
Storm drain outfalls discharging from parking areas directly to
stream corridor at rear of retirement community
HYDROLOGIC AND HYDRAULIC ANALYSIS
WinTR-55 Current Data Description
--- Identification Data ---
User: CNA, Inc. Date: 9/27/2005
Project: 03201 Koerer Place Units: English
SubTitle: Existing Conditions Areal Units: Acres
State: North Carolina
County: Forsyth
Filename: N:\Design\03000\03201-Koerner Place\Design\TR-55\03201-TRSS.w55
--- Sub-Area Data ---
Name Description Reach Area(ac) RCN Tc
------------------------------------------------------------------------------
Existing t Outlet 39.22 80 0.310
Confluence Outlet 6.58 62 0.279
Total area: 45.80 (ac)
--- Storm Data --
Rainfall Depth by Rainfall Return Period
2-Yr 5-Yr 10-Yr 25-Yr 50-Yr 100-Yr 1-Yr
(in) (in) (in) (in) (in) (in) (in)
--------------------------------------------------------------------------------
3.5 4.4 5.1 5.5 6.5 7.3 3.0
Storm Data Source: Forsyth County, NC (NRCS)
Rainfall Distribution Type: Type II
Dimensionless Unit Hydrograph: <standard>
WinTR-55, Versicn 1.00.08 Page 1 9/27/2005 4:50:17 PM
CNA, Inc. 03201 Koener Place
Existing Conditions
Forsyth County, North Carolina
Storm Data
Rainfall Depth by Rainfall Return Period
2-Yr 5-Yr 10-Yr 25-Yr 50-Yr 100-Yr 1-Yr
(in) (in) (in) (in) (in) (in) (in)
--------------------------------------------------------------------------------
3.5 4.4 5.1 5.5 6.5 7.3 3.0
Storm Data Source: Forsyth County, NC (NRCS)
Rainfall Distribution Type: Type II
Dimensionless Unit Hydrograph: <standard>
WinTR-55, Version 1.00.08 Page 1 9/27/2005 4:50:17 PM
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CNA, Inc. 03201 Koener Place
Existing Conditions
Forsyth County, North Carolina
Watershed Peak Table
Sub-Area Peak Flow by Rainfall Return Period
or Reach 2-Yr 5-Yr 10-Yr 25-Yr 50-Yr 100-Yr 1-Yr
Identifier
------------- (cfs)
----------- (cfs)
--------- (cfs)
-------- (cfs) (cfs)
--------------------- (cfs)
----------- (cfs)
---------
SUBAREAS
Existing t 72.94 106.18 132.96 148.36 187.78 219.30 55.23
Confluence 3.87 7.69 11.12 13.22 18.76 23.45 2.14
REACHES
OUTLET 76.75 113.76 143.87 161.47 205.90 241.95 57.27
WinTR-55, Version 1.00.08 Page 1
9/27/2005 4:50:17 PM
CNA, Inc. 03201 Koener Place
Existing Conditions
Forsyth County, North Carolina
Hydrograph Peak/Peak Time Table
Sub-Area Peak Flow and Peak Time (hr) by Rainfall Return Period
or Reach 2-Yr 5-Yr 10-Yr 25-Yr 50-Yr 100-Yr 1-Yr
Identifier (cfs) (cfs) (cfs) (cfs) (cfs) (cfs) (cfs)
(hr) (hr) (hr) (hr) (hr) (hr) (hr)
----------------------------------------------------------------------------------
SUBAREAS
Existing t 72.94 106.18 132.96 148.36 187.78 219.30 55.23
12.08 12.07 12.08 12.07 12.07 12.07 12.08
Confluence 3.87 7.69 11.12 13.22 18.76 23.45 2.14
12.10 12.08 12.07 12.07 12.06 12.06 12.11
REACHES
OUTLET 76.75 113.76 143.87 161.47 205.90 241.95 57.27
WinTR-55, Version 1.00.08 Page 1 9/27/2005 4:50:17 PM
CNA, Inc. 03201 Koener Place
Existing Conditions
Forsyth County, North Carolina
Sub-Area Summary Table
Sub-Area Drainage Time of Curve Receiving Sub-Area
Identifier Area Concentration Number Reach Description

----------- (ac)
----------- (hr)
------

Existing t
39.22 --------
0.310 --------
80 ------------------------------------
Outlet
Confluence 6.58 0.279 62 Outlet
Total Area: 45.80 (ac)
WinTR-55, Version 1.00.08 Page 1 9/27/2005 4:50:17 PM
CNA, Inc. 03201 Koener Place
Existing Conditions
Forsyth County, North Carolina
Sub-Area Time of Concentration Details
Sub-Area Flow Mannings's End Wetted Travel
Identifier/ Length Slope n Area Perimeter Velocity Time

------------- (ft)
--------- (ft/ft)
-------- (sq ft)
----------- (ft) (ft/sec) (hr)

Existing t ---------- ---------------------- -------
SHEET 100 0.0200 0.240 0.227
SHALLOW 225 0.0200 0.050 0.027
CHANNEL 1200 6.000 0.056
Time of Concentration 0.310
Confluence
SHEET 100 0.0200
SHALLOW 300 0.0450
CHANNEL 600
0.240
0.050
0.227
0.024
6.000 0.028
Time of Concentration 0.279
WinTR-55, Version 1.00.08 Page 1
9/27/2005 4:50:17 PM
CNA, Inc. 03201 Koener Place
Existing Conditions
Forsyth County, North Carolina
Sub-Area Land Use and Curve Number Details
Sub-Area Hydrologic
Identifier Land Use Soil
Group
--------------------------------------------------------------
Existing tOpen space; grass cover > 75% (good) B
Paved parking lots, roofs, driveways B
Woods (good) B
Sub-Area Curve
Area Number
(ac)
---------------
15.72 61
20.33 98
3.17 55
Total Area / Weighted Curve Number 39.22 80
ConfluenceOpen space; grass cover > 75% (good) B 2.49 61
Paved parking lots, roofs, driveways B .8 98
Woods (good) B 3.29 55
Total Area / Weighted Curve Number 6.58 62
WinTR-55, Version 1.00.08 Page 1 9/27/2005 4:50:17 PM
03201.DAT
JOB TR-20 SUMMARY FULLPRINT
TITL E 03201 KOERNER PLACE
TITL E EXISTING CONDITIONS
6 RUNOFF 1 001 1 0.06128 80. 0.34 1 1
6 RUNOFF 1 002 2 0.01028 62. 0.28 1 1
6 ADDHYD 4 003 1 2 3 1 1
E N DATA
7 INCREM 6 0.05
7 COMPUT 7 001 003 3.0 1.0 2 2 01
ENDCMP 1
7 COMPUT 7 001 003 3.5 1.0 2 2 02
ENDCMP 1
7 COMPUT 7 001 003 5.1 1.0 2 2 10
ENDCMP 1
7 COMPUT 7 001 003 6.5 1.0 2 2 50
ENDCMP 1
7 COMPUT 7 001 003 7.3 1.0 2 2 99
ENDCMP 1
ENDJOB 2
Page 1
03201.OUT
1
TR20 -------------------------------------------------------------------- SCS -
SUMMARY 03201 KOERNER PLACE VERSION
09/ 15/** XISTING CONDITIONS 2.04TEST
11:11:50 PASS 1 JOB NO. 1 PAGE 1
EXECUTIVE CONTROL INCREM MAIN TIME INCREMENT = .050 HOURS
EXECUTIVE CONTROL COMPUT FROM XSECTION 1 TO XSECTION 3
STARTING TIME _ .00 RAIN DEPTH = 3.00 RAIN DURATION = 1.00
ANT. RUNOFF COND. = 2 MAIN TIME INCREMENT = .050 HOURS
ALTERNATE NO. = 0 STORM NO. = 1 RAIN TABLE NO. = 2
OPERATION RUNOFF XSECTION 1
PEAK TIME(HRS)
12.10
PEAK DISCHARGE(CFS)
50.8
PEAK ELEVATION(FEET)
(RUNOFF)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
1.25 WATERSHED INCHES; 49 CFS-HRS;
OPERATION RUNOFF XSECTION 2
PEAK TIME(HRS)
12.12
PEAK DISCHARGE(CFS)
1.9
4.1 ACRE-FEET.
PEAK ELEVATION(FEET)
(RUNOFF)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
.40 WATERSHED INCHES; 3 CFS-HRS;
OPERATION ADDHYD XSECTION 3
PEAK TIME(HRS)
12.10
PEAK DISCHARGE(CFS)
52.8
.2 ACRE-FEET.
PEAK ELEVATION(FEET)
(NULL)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
1.13 WATERSHED INCHES; 52 CFS-HRS;
4.3 ACRE-FEET.
EXECUTIVE CONTROL ENDCMP COMPUTATIONS COMPLETED FOR PASS 1
EXECUTIVE CONTROL COMPUT FROM XSECTION 1 TO XSECTION 3
STARTING TIME _ .00 RAIN DEPTH = 3.50 RAIN DURATION = 1.00
ANT. RUNOFF COND. = 2 MAIN TIME INCREMENT = .050 HOURS
ALTERNATE NO. = 0 STORM NO. = 2 RAIN TABLE NO. = 2
1
TR20 --------------------- ------------------------- --------- ---------- --- SCS -
SUMMARY 03201 KOERNER PLACE VERSION
09/15/'` XISTING CONDITIONS 2.04TEST
11:11:50 PASS 2 JOB NO. 1 PAGE 2
OPERATION RUNOFF XSECTION 1
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.10 66.9 (RUNOFF)
Page 1
03201.OUT
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
1.63 WATERSHED INCHES; 65 CFS-HRS; 5.3 ACRE-FEET.
OPERATION RUNOFF XSECTION 2
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.10 3.6 (RUNOFF)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
.61 WATERSHED INCHES; 4 CFS-HRS; .3 ACRE-FEET.
OPERATION ADDHYD XSECTION 3
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.10 70.5 (NULL)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
1.49 WATERSHED INCHES; 69 CFS-HRS; 5.7 ACRE-FEET.
EXECUTIVE CONTROL ENDCMP COMPUTATIONS COMPLETED FOR PASS 2
EXECUTIVE CONTROL COMPUT FROM XSECTION 1 TO XSECTION 3
STARTING TIME _ .00 RAIN DEPTH = 5.10 RAI N DURATION = 1.00
ANT. RUNOFF COND. = 2 MAIN TIME INCREMENT = .050 HOURS
ALTERNATE NO. = 0 STORM NO. =10 RAI N TABLE NO. = 2
OPERATION RUNOFF XSECTION 1
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.09 122.3 (RUNOFF)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
2.98 WATERSHED INCHES; 118 CFS-HRS; 9.7 ACRE-FEET.
1
TR20 ------------- --------------=-------------------------- -------------- SCS -
SUMMARY 03201 KOERNER PLACE VERSION
09/15/** XISTING CONDITIONS 2.04TEST
11:11:50 PASS 3 JOB NO. 1 PAGE 3
OPERATION RUNOFF XSECTION 2
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.08 10.4 (RUNOFF)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
1.50 WATERSHED INCHES; 10 CFS-HRS; .8 ACRE-FEET.
OPERATION ADDHYD XSECTION 3
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.09 132.7 (NULL)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
2.76 WATERSHED INCHES; 128 CFS-HRS; 10.5 ACRE-FEET.
Page 2
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03201.OUT
EXECUTIVE CONTROL ENDCMP COMPUTATIONS COMPLETED FOR PASS 3
EXECUTIVE CONTROL COMPUT FROM XSECTION 1 TO XSECTION 3
STARTING TIME = .00 RAIN DEPTH = 6.50 RAIN DURATION = 1.00
ANT. RUNOFF COND. = 2 MAIN TIME INCREMENT = .050 HOURS
ALTERNATE NO. = 0 STORM NO. =50 RAIN TABLE NO. = 2
OPERATION RUNOFF XSECTION 1
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.09 174.2 (RUNOFF)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
4.23 WATERSHED INCHES; 167 CFS-HRS; 13.8 ACRE-FEET.
OPERATION RUNOFF XSECTION 2 ,
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.07 17.7 (RUNOFF)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
1 2.44 WATERSHED INCHES; 16 CFS-HRS; 1.3 ACRE-FEET.
TR20 -------------------------------------------------------------------- SCS -
SUMMARY 03201 KOERNER PLACE VERSION
09/15/** XISTING CONDITIONS 2.04TEST
11:11:50 PASS 4 JOB NO. 1 PAGE 4
OPERATION ADDHYD XSECTION 3
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.09 191.9 (NULL)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
3.98 WATERSHED INCHES; 184 CFS-HRS; 15.2 ACRE-FEET.
EXECUTIVE CONTROL ENDCMP COMPUTATIONS COMPLETED FOR PASS 4
EXECUTIVE CONTROL COMPUT FROM XSECTION 1 TO XSECTION 3
STARTING TIME = .00 RAIN DEPTH = 7.30 RAIN DURATION = 1.00
ANT. RUNOFF COND. = 2 MAIN TIME INCREMENT = .050 HOURS
ALTERNATE NO. = 0 STORM NO. =99 RAIN TABLE NO. = 2
OPERATION RUNOFF XSECTION 1
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.09 204.0 (RUNOFF)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
4.97 WATERSHED INCHES; 197 CFS-HRS; 16.3 ACRE-FEET.
OPERATION RUNOFF XSECTION 2
Page 3
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03201.OUT
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.07 22.2 (RUNOFF)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
3.02 WATERSHED INCHES; 20 CFS-HRS; 1.7 ACRE-FEET.
OPERATION ADDHYD XSECTION 3
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.09 226.1 (NULL)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
1 4.69 WATERSHED INCHES; 217 CFS-HRS; 17.9 ACRE-FEET.
TR20 -------------------------------------------------------------------- SCS -
SUMMARY 03201 KOERNER PLACE VERSION
09/15/** XISTING CONDITIONS 2.04TEST
11:11:50 PASS 6 JOB NO. 1 PAGE 5
EXECUTIVE CONTROL ENDCMP COMPUTATIONS COMPLETED FOR PASS 5
1
T,220 -------------------------------------------------------------------- SCS -
SUMMARY 03201 KOERNER PLACE VERSION
09/15/** XISTING CONDITIONS 2.04TEST
11:11:50 SUMMARY, JOB NO. 1 PAGE 6
SUMMARY TABLE 1
---------------
SELECTED RESULTS OF STANDARD AND EXECUTIVE CONTROL IN ORDER PERFORMED.
A CHARACTER FOLLOWING THE PEAK DISCHARGE TIME AND RATE (CFS) INDICATES:
F-FLAT TOP HYDROGRAPH T-TRUNCATED HYDROGRAPH R-RISING TRUNCATED HYDROGRAPH
XSECTION/ STANDARD PEAK DISCHARGE
STRUCTURE CONTROL DRAINAGE RUNOFF ------------------------------------
ID OPERATION AREA AMOUNT ELEVATION TIME RATE RATE
(SQ MI) (IN) (FT) (HR) (CFS) (CSM)
RAINFALL OF 3.00 inches AND 24.00 hr DURATION, BEGINS AT .0 hrs.
RAINTABLE NUMBER 2, ARC 2
MAIN TIME INCREMENT .050 HOURS
ALTERN ATE 0 STORM 1
------
XSECTION ----
1 -------------
RUNOFF ----
.06
•1.25 ---
12.10
XSECTION 2 RUNOFF .01 .40 --- 12.12T
XSECTION 3 ADDHYD .07 1.13 --- 12.10
RAINFALL OF 3.50 inches AND 24.00 hr DURATION, BEGINS AT
ALTERN ATE 0 STORM 2
------
XSECTION ----
1 -------------
RUNOFF ----
.06
1.63 ---
12.10
XSECTION 2 RUNOFF .01 .61 --- 12.10T
XSECTION 3 ADDHYD .07 1.49 --- 12.10
RAINFALL OF 5.10 inches AND 24.00 hr DURATION, BEGINS AT
ALTERNATE 0 STORM 10
Page 4
51 850.0
2T 200.0
53 757.1
0 hrs.
67 1116.7
4T 400.0
70 1000.0
.0 hrs.
03201.OUT
XSECTION 1 RUNOFF .06 2.98 --- 12.09 122 2033.3
XSECTION 2 RUNOFF .01 1.50 --- 12.08 10 1000.0
XSECTION 3 ADDHYD .07 2.76 --- 12.09 133 1900.0
RAINFALL OF 6.50 inches AND 24.00 hr DURATION, BEGINS AT .0 hrs.
ALTERNATE 0 STORM 50
------
XSECTION ----
1 -------------
RUNOFF ----
.06 4.23 ---
12.09
174
2900.0
XSECTION 2 RUNOFF .01 2.44 --- 12.07 18 1800.0
XSECTION 3 ADDHYD .07 3.98 --- 12.09 192 2742.9
1
TR20 ---- ---- ------------- ----------------------- ------------ --------- --- SCS -
SUMMARY 03201 KOERNER PLACE VERSION
09/15/** XISTING CONDITIONS 2.04TEST
11:11:50 SUMMARY, JOB NO. 1 PAGE 7
SUMMARY TABLE 1
---------------
SELECTED RESULTS OF STANDARD AND EXECUTIVE CONTROL IN ORDER PERFORMED.
A CHARACTER FOLLOWING THE PEAK DISCHARGE TIME AND RATE (CFS) INDICATES:
F-FLAT TOP HYDROGRAPH T-TRUNCATED HYDROGRAPH R-RISING TRUNCATED HYDROGRAPH
XSECTION/ STANDARD PEAK DISCHARGE
STRUCTURE CONTROL DRAINAGE RUNOFF ------------------------------------
ID OPERATION AREA AMOUNT ELEVATION TIME RATE RATE
(SQ MI) (IN) (FT) (HR) (CFS) (CSM)
RAINFALL OF 7.30 inches AND 24.00 hr DURATION, BEGINS AT .0 hrs.
ALTERNATE 0 STORM 99
XSECTION 1 RUNOFF .06 4.97 --- 12.09 204 3400.0
XSECTION 2 RUNOFF .01 3.02 --- 12.07 22 2200.0
XSECTION 3 ADDHYD .07 4.69 --- 12.09 226 3228.6
1
TR20 -------------------------------------------------------------------- SCS -
SUMMARY 03201 KOERNER PLACE VERSION
09/15/`'` XISTING CONDITIONS 2.04TEST
11:11:50 SUMMARY, JOB NO. 1 PAGE 8
SUMMARY TABLE 3
---------------
STORM DISCHARGES (CFS) AT XSECTIONS AND STRUCTURES FOR ALL ALTERNATES
QUESTION MARK (?) AFTER: OUTFLOW PEAK - RISING TRUNCATED HYDROGRAPH.
XSECTION/ DRAINAGE
STRUCTURE AREA STORM NUMBERS..........
ID (SQ MI) 1 2 10 50 99
XSECTION 1 .06
---------------------------
ALTERNATE 0 51 67 122 174 204
XSECTION 2 .01
---------------------------
ALTERNATE 0 2 4 10 18 22
Page 5
03201.OUT
XSECTION 3 .07
---------------------------
ALTERNATE 0 53 70 133 192 226
1
TR20 -------------------------------------------------------------------- SCS -
SUMMARY 03201 KOERNER PLACE VERSION
09/1-5/** XISTING CONDITIONS 2.04TEST
END OF 1 JOBS IN THIS RUN
*** WARNING - UNEXPECTED RECORD(S) ENCOUNTERED WHEN LOOKING FOR "JOB" RECORD.
IMAGES OF FIRST 10 RECORDS IGNORED FOLLOW: ***
SCS TR-20, VERSION 2.04TEST
SUMMARY FILES
INPUT = c:\tr20\O3201.dat GIVEN DATA FILE
OUTPUT = c:\tr20\O3201.OUT DATED 09/15/**,11:11:50
FILES GENERATED - DATED 09/15/**,11:11:50
NONE!
TOTAL NUMBER OF WARNINGS = 1, MESSAGES = 0
*** TR-20 RUN COMPLETED ***
Page 6
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03201P.DAT
JOB TR-20 SUMMARY FULLPRINT
TITLE 03201 KOERNER PLACE
TITLE PROPOSED CONDITIONS
3 STRUCT 01
8 939.0
8 939.5
8 940.0
8 940.5
8 941.0
8 941.5
8 942.0
8 942.5
8 943.0
8 943.5
8 944.0
8 944.5
8 945.0
8 945.5
8 946.0
9 ENDTBL
6 RUNOFF 1 001 1 0.06128
6 RESVOR 2 01 1 2 939.0
6 RUNOFF 1 002 3 0.01028
6 ADDHYD 4 003 2 3 4
E N DATA
7 INCREM 6 0.05
7 COMPUT 7 001 003
ENDCMP 1
7 COMPUT 7 001 003
ENDCMP 1
7 COMPUT 7 001 003
ENDCMP 1
7 COMPUT 7 001 003
ENDCMP 1
7 COMPUT 7 001 003
ENDCMP 1
ENDJOB 2
0.0
7.67
10.85
13.29
15.34
17.15
18.79.
20.30
21.70
49.32
98.66
162.13
237.01
321.75
415.30
80.
62.
0.0
0.18
0.37
0.57
0.78
0.99
1.21
1.43
1.67
1.91
2.15
2.41
2.67
2.93
3.21
0.34
0.29
1
1
1
1
3.0 1.0 2 2 01
3.5 1.0 2 2 02
5.1 1.0 2 2 10
6.5 1.0 2 2 50
7.3 1.0 2 2 99
Page 1
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03201P.OUT
1
TR20 -------------------------------------------------------------------- SCS -
SUMMARY 03201 KOERNER PLACE VERSION
091271** PROPOSED CONDITIONS 2.04TEST
13:12:55 PASS 1 JOB NO. 1 PAGE 1
EXECUTIVE CONTROL INCREM MAIN TIME INCREMENT = .050 HOURS
EXECUTIVE CONTROL COMPUT FROM XSECTION 1 TO XSECTION 3
STARTING TIME = .00 RAIN DEPTH = 3.00 RAIN DURATION = 1.00
ANT. RUNOFF COND. = 2 MAIN TIME INCREMENT = .050 HOURS
ALTERNATE NO. = 0 STORM NO. = 1 RAIN TABLE NO. = 2
OPERATION RUNOFF XSECTION 1
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.10 50.8 (RUNOFF)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
1.25 WATERSHED INCHES; 49 CFS-HRS; 4.1 ACRE-FEET.
OPERATION RESVOR STRUCTURE 1
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.42 18.1 941.79
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
1.25 WATERSHED INCHES; 49 CFS-HRS; 4.1 ACRE-FEET.
OPERATION RUNOFF XSECTION 2
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.12 1.9 (RUNOFF)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
.40 WATERSHED INCHES; 3 CFS-HRS; .2 ACRE-FEET.
OPERATION ADDHYD XSECTION 3
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.37 19.0 (NULL)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
1.13 WATERSHED INCHES; 52 CFS-HRS; 4.3 ACRE-FEET.
1
TR20 --------------------------------------------------------------------
SCS -
SUMMARY 03201 KOERNER PLACE VERSION
09/27/** PROPOSED CONDITIONS 2.04TEST
13:12:55 PASS 2 JOB NO. 1 PAGE 2
EXECUTIVE CONTROL ENDCMP COMPUTATIONS COMPLETED FOR PASS 1
EXECUTIVE CONTROL COMPUT FROM XSECTION 1 TO XSECTION 3
Page 1
03201P.OUT
STARTING TIME _ .00 RAIN DEPTH = 3.50
ANT. RUNOFF COND. = 2 MAIN TIME INCREMENT =
ALTERNATE NO. = 0 STORM NO. = 2
OPERATION RUNOFF XSECTION 1
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
12.10 66.9
RAIN DURATION = 1.00
050 HOURS
RAIN TABLE NO. = 2
PEAK ELEVATION(FEET)
(RUNOFF)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
1.63 WATERSHED INCHES; 65 CFS-HRS;
OPERATION RESVOR STRUCTURE 1
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
12.46 21.3
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
1.64 WATERSHED INCHES; 65 CFS-HRS;
OPERATION RUNOFF XSECTION 2
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
12.10 3.6
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
.61 WATERSHED INCHES; 4 CFS-HRS;
OPERATION ADDHYD XSECTION 3
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
12.34 22.7
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
1.49 WATERSHED INCHES; 69 CFS-HRS;
5.3 ACRE-FEET.
PEAK ELEVATION(FEET)
942.85
5.3 ACRE-FEET.
PEAK ELEVATION(FEET)
(RUNOFF)
.3 ACRE-FEET.
PEAK ELEVATION(FEET)
(NULL)
5.7 ACRE-FEET.
EXECUTIVE CONTROL ENDCMP COMPUTATIONS COMPLETED FOR PASS 2
1
TR20 -------------------------------------------------------------------- SCS -
SUMMARY 03201 KOERNER PLACE VERSION
09/27/** PROPOSED CONDITIONS 2.04TEST
13:12:55 PASS 3 JOB NO. 1 PAGE 3
EXECUTIVE CONTROL COMPUT
STARTING TIME = .00
ANT. RUNOFF COND. = 2
ALTERNATE NO. = 0
OPERATION RUNOFF XSECTION
PEAK TIME(HRS)
12.09
FROM XSECTION 1 TO XSECTION 3
RAIN DEPTH = 5.10 RAIN DURATION = 1.00
MAIN TIME INCREMENT = .050 HOURS
STORM NO. =10 RAIN TABLE NO. = 2
1
PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
122.3 (RUNOFF)
• RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
2.98 WATERSHED INCHES; 118 CFS-HRS; 9.7 ACRE-FEET.
. Page 2
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03201P.OUT
OPERATION RESVOR STRUCTURE 1
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
12.21 100.6
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
2.98 WATERSHED INCHES; 118 CFS-HRS;
OPERATION RUNOFF XSECTION 2
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
12.08 10.4
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
1.50 WATERSHED INCHES; 10 CFS-HRS;
OPERATION ADDHYD XSECTION 3
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
12.20 108.2
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
2.76 WATERSHED INCHES; 128 CFS-HRS;
PEAK ELEVATION(FEET)
944.02
9.7 ACRE-FEET.
PEAK ELEVATION(FEET)
(RUNOFF)
.8 ACRE-FEET.
PEAK ELEVATION(FEET)
(NULL)
10.5 ACRE-FEET.
EXECUTIVE CONTROL ENDCMP COMPUTATIONS COMPLETED FOR PASS 3
1
TR20 ------------- ------- ----------------------------------- ------------- SCS -
SUMMARY 03201 KOERNER PLACE VERSION
09/27/''` PROPOSED CONDITIONS 2.04TEST
13:12:55 PASS 4 JOB NO. 1 PAGE 4
EXECUTIVE CONTROL COMPUT FROM XSECTION 1 TO XSECTION 3
STARTING TIME _ .00 RAIN DEPTH = 6.50 RAIN DURATION = 1.00
ANT. RUNOFF COND. = 2 MAIN TIME INCREMENT = .050 HOURS
ALTERNATE NO. = 0 STORM NO. =50 RAIN TABLE NO. = 2
OPERATION RUNOFF XSECTION 1
PEAK TIME(HRS) PEAK DISCHARGE(CFS) P EAK ELEVATION(FEET)
12.09 174.2 (RUNOFF)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
4.23 WATERSHED INCHES; 167 CFS-HRS; 13.8 ACRE-FEET.
OPERATION RESVOR STRUCTURE 1
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.15 162.1 944.50
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
4.24 WATERSHED INCHES; 168 CFS-HRS; 13.9 ACRE-FEET.
OPERATION RUNOFF XSECTION 2
Page 3
03201P.OUT
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
12.07 17.7
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
2.44 WATERSHED INCHES; 16 CFS-HRS;
OPERATION ADDHYD XSECTION 3
PEAK TIME(HRS) PEAK DISCHARGE(CFS)
12.15 177.5
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
3.98 WATERSHED INCHES; 184 CFS-HRS;
PEAK ELEVATION(FEET)
(RUNOFF)
1.3 ACRE-FEET.
PEAK ELEVATION(FEET)
(NULL)
15.2 ACRE-FEET.
EXECUTIVE CONTROL ENDCMP COMPUTATIONS COMPLETED FOR PASS 4
1
TR20 -------------------------------------------------------------------- SCS -
SUMMARY 03201 KOERNER PLACE VERSION
09/27/°* PROPOSED CONDITIONS 2.04TEST
13:12:55 PASS 5 JOB NO. 1 PAGE 5
EXECUTIVE CONTROL COMPUT FROM XSECTION 1 TO XSECTION 3
STARTING TIME = .00 RAIN DEPTH = 7.30 RAIN DURATION = 1.00
ANT. RUNOFF COND. = 2 MAIN TIME INCREMENT = .050 HOURS
ALTERNATE NO. = 0 STORM NO. =99 RAIN TABLE NO. = 2
OPERATION RUNOFF XSECTION 1
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.09 204.0 (RUNOFF)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
4.97 WATERSHED INCHES; 197 CFS-HRS; 16.3 ACRE-FEET.
OPERATION RESVOR STRUCTURE 1
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.14 194.6 944.72
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
4.97 WATERSHED INCHES; 196 CFS-HRS; 16.2 ACRE-FEET.
OPERATION RUNOFF XSECTION 2
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.07 22.2 (RUNOFF)
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
3.02 WATERSHED INCHES; 20 CFS-HRS; 1.7 ACRE-FEET.
OPERATION ADDHYD XSECTION 3
PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET)
12.13 214.8 (NULL)
Page 4
03201P.OUT
RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS)
4.69 WATERSHED INCHES; 216 CFS-HRS; 17.9 ACRE-FEET.
EXECUTIVE CONTROL ENDCMP COMPUTATIONS COMPLETED FOR PASS 5
1
TR20 -------------------------------------------------------------------- SCS -
SUMMARY 03201 KOERNER PLACE VERSION
09/27/** PROPOSED CONDITIONS 2.04TEST
13:12:55 PASS 6 JOB NO. 1 PAGE 6
1
TR20 -------------------------------------------------------------------- SCS -
SUMMARY 03201 KOERNER PLACE VERSION
09/27/** PROPOSED CONDITIONS 2.04TEST
13:12:55 SUMMARY, JOB NO. 1 PAGE 7
SUMMARY TABLE 1
---------------
SELECTED RESULTS OF STANDARD AND EXECUTIVE CONTROL IN ORDER PERFORMED.
A CHARACTER FOLLOWING THE PEAK DISCHARGE TIME AND RATE (CFS) INDICATES:
F-FLAT TOP HYDROGRAPH T-TRUNCATED HYDROGRAPH R-RISING TRUNCATED HYDROGRAPH
XSECTION/ STANDARD PEAK DISCHARGE
STRUCTURE CONTROL DRAINAGE RUNOFF ------------------------------------
ID OPERATION AREA AMOUNT ELEVATION TIME RATE RATE
(SQ MI) (IN) (FT) (HR) (CFS) (CSM)
RAINFALL OF 3.00 inches AND 24.00 hr DURATION, BEGINS AT .0 hrs.
RAINTABLE NUMBER 2, ARC 2
MAIN TIME INCREMENT .050 HOURS
ALTERNATE
- 0 STORM 1
--
----
XSECTION ---
1 -------------
RUNOFF ----
.06
1.25
--- 12.10
51
850.0
STRUCTURE 1 RESVOR .06 1.25 941.79 12.42 18 300.0
XSECTION 2 RUNOFF .01 .40 --- 12.12T 2T 200.0
XSECTION 3 ADDHYD .07 1.13 --- 12.37 19 271.4
RAINFALL OF 3.50 inches AND 24.00 hr DURATION, BEGINS AT .0 hrs.
ALTERNATE 0 STORM 2
-------
XSECTION ---
1 -------------
RUNOFF ----
.06
1.63 ---
12.10
67
1116.7
STRUCTURE 1 RESVOR .06 1.64 942.85 12.46 21 350.0
XSECTION 2 RUNOFF .01 .61 --- 12.10T 4T 400.0
XSECTION 3 ADDHYD .07 1.49 --- 12.34 23 328.6
RAINFALL OF 5.10 inches AND 24.00 hr DURATION, BEGINS AT .0 hrs.
ALTERNATE 0 STORM 10
-------
XSECTION ---
1 -------------
RUNOFF ----
.06
2.98
--- 12.09
122
2033.3
STRUCTURE 1 RESVOR .06 2.98 944.02 12.21 101 1683.3
XSECTION 2 RUNOFF .01 1.50 --- 12.08 10 1000.0
XSECTION 3 ADDHYD .07 2.76 --- 12.20 108 1542.9
RAINFALL OF 6.50 inches AND 24.00 hr DURATION, BEGINS AT .0 hrs.
ALTERNATE 0 STORM 50
---------------------------
Page 5
03201P.OUT
XSECTION 1 RUNOFF .06 4.23 --- 12.09 174 2900.0
STRUCTURE 1 RESVOR .06 4.24 944.50 12.15 162 2700.0
XSECTION 2 RUNOFF .01 2.44 --- 12.07 18 1800.0
1
TR20 ------------------ --------------------------------------- ----------- SCS -
SUMMARY 03201 KOERNER PLACE VERSION
09/27/** PROPOSED CONDITIONS 2.04TEST
13:12:55 SUMMARY, JOB NO. 1 PAGE 8
SUMMARY TABLE 1
---------------
SELECTED RESULTS OF STANDARD AND EXECUTIVE CONTROL IN ORDER PERFORMED.
A CHARACTER FOLLOWING THE PEAK DISCHARGE TIME AND RATE (CFS) INDICATES:
F-FLAT TOP HYDROGRAPH T-TRUNCATED HYDROGRAPH R-RISING TRUNCATED HYDROGRAPH
XSECTION/ STANDARD PEAK DISCHARGE
STRUCTURE CONTROL DRAINAGE RUNOFF ---------- ------- ---------- ---------
ID O PERATION AREA AMOUNT ELEVATION TIME RATE RATE
(SQ MI) (IN) (FT). (HR) (CFS) (CSM)
ALTERN ATE 0 STORM 50
------
XSECTION ---
3 --------
ADDHYD ----------
.07
3.98 ---
12.15
178
2542.9
RAINFALL OF 7.30 i nches AND 24.00 hr DURATION, BEG INS AT .0 hrs.
ALTERN ATE 0 STORM 99
------
XSECTION ---
1 --------
RUNOFF ----------
.06
4.97 ---
12.09
204
3400.0
STRUCTURE 1 RESVOR .06 4.97 944.72 12.14 195 3250.0
XSECTION 2 RUNOFF .01 3.02 --- 12.07 22 2200.0
XSECTION 3 ADDHYD .07 4.69 --- 12.13 215 3071.4
1
TR20 ---- --- -------- ----------- ---------------------- ------- ---------- --- SCS -
SUMMARY 03 201 KOERNER PLACE VERSION
09/27/** PR OPOSED CONDITIONS 2.04TEST
13:12:55 SU MMARY, JOB NO. 1 PAGE 9
SUMMARY TABLE 3
---------------
STORM DISCHARGES (CFS) AT XSECTIONS AND STRUCTURES FOR ALL ALTERNATES
QUESTION MARK (?) AFTER: OUTFLOW PEAK - RISING TRUNCATED HYDROGRAPH.
XSECTION/ DRAINAGE
STRUCTURE AREA STORM NUMBERS..........
ID (SQ MI) 1 2 10 50 99
STRUCTURE 1 .06
---------------------------
ALTERNATE 0 18 21 101 162 195
XSECTION 1 .06
---------------------------
ALTERNATE 0 51 67 122 174 204
XSECTION 2 .01
---------------------------
ALTERNATE 0 2 4 10 18 22
Page 6
03201P.OUT
XSECTION 3 .07
---------------------------
ALTERNATE 0 19 23 108 178 215
1
TR20 -------------------------------------------------------------------- SCS -
SUMMARY 03201 KOERNER PLACE VERSION
09/27/** PROPOSED CONDITIONS 2.04TEST
END OF 1 JOBS IN THIS RUN
** WARNING - UNEXPECTED RECORD(S) ENCOUNTERED WHEN LOOKING FOR "JOB" RECORD.
IMAGES OF FIRST 10 RECORDS IGNORED FOLLOW: **j`
SCS TR-20, VERSION 2.04TEST
SUMMARY FILES
INPUT = C:\tr20\O3201p.dat
OUTPUT = c:\tr20\O3201p.OUT
GIVEN DATA FILE
DATED 09/27/**,13:12:55
FILES GENERATED - DATED 09/27/**,13:12:55
NONE!
TOTAL NUMBER OF WARNINGS = 1, MESSAGES = 0
*** TR-20 RUN COMPLETED ***
Page 7
MEC•RAS Plan. EX River. Koerner Reach 01
Reach River Sta Profile 0 Total Min Ch El W.S. Elev Chi W.S. E.G. Elev E. G. Slope Vel Chnl Flow Area Top Width Froude 0 Chi
(n •

• 1 - - (n
1 (ft)
(8
•
'
(Ne'
leG
'
'
(N)

'
0 1 20
r
•
1-
51 .00 934 .00 938.85 935.41 , 3887 0 000241 1 22 , 4
1 96
11.82
0.11
01 _ --_-.
20 -
____
2-yr _-
67 00 934 00 939.14 935.66 939.17 0.000329 1.48 45.61 15.16 0.13
01 20 ? 10-yr 122.00 934 00 939.86 936.34 939 94 0.000587 2.22. 62.60 31 80 0.18
of 20 50-yr 174 00 934 00 940 33 936 85 940 44 0000810. 278. 79 68 41 20 0.22
01 _ 20 1o0-yr 204 00 934 00 940 55, 937 11 940.69 0000926 3 06 89 38 45 45 0 24
01 19 1-yr
--- 51 00
- 936 00 938 29 938 29 938 80 0 016938 6 68 13 36 14 61 0 00
01 -- 19 2 yr 67 00 93600 938 53 938.53 93909 0.017298 724. 17.12 16.77 0 82
01 19 10-yr 122.00 936.00 939.1& 939.13 93981 0.018530 8.67 2880, 22.66 088
01 19 50-yr 174.00 936.00 939.58 939.58 940.31 0.018195 943, 40.43 28.57 0.89.
01 19 100-yr 204.00 936.00 939.79 939.79 940.54 0.018256 9.82 46.67 31.28 0.90
01 '78 I1-yr -
. 51 00! 935.00. 936.34 936.68 937.40, 00425 8.34. 6.63. 9.56 1.47!
01 .18 '2-yr _
67.001. 935.00' 936.551 936.921 93773 0.037787.
_-- 8,901
- 8.83; 11.72 1.42'.
Ot '18 10-yr 122.00 935.00'. 937.11' 937,551 938.54 0.029492' 10.14 17.12 17.49 1.34
pt .18 _ 50-yr 174.00 935.00. 937,51' 937.98
-- 939.091 0.026689 11.03 24.74 21.05.. 1.32
01 18 100-yr 204.00 935.00 93732. 938.20 939.34 0.024985 11.36 29.43. 22.97 1.30
01 17 ?1-yr 5100 932.00 935.28 934.03 935.45 0.003012 3,37 1721 12.46 0.38
01 17 2-yr 67 00 932.00 935.53 934.35. 93576 0003652 3 96 20.67 15.87 0.43
01 17 10-yr 122.00 93200 934.27 935.24 937.24 0.086490 13.83 8.91 6.20 1.93
o1 17 !O-yr 17400. 932.00 934.83 936.01 937.97 0.068473 14.29 12.89 798. 1.76
Oi 17 100-yr 204.00 932.00 935.14 936.30. 938.31 0.059659 14.43 15.58 10.46 1.67
01 18 1-yr 51.00 933.00 934.58 934.58 935.08 0,014687 5.82. 11.30 16.49 0.87
O7 •16 2-yr 67.00 93300 934.83 934.03 935.35 0.013153' 6.15. 15.89 20.91 0.85
01 18 10-yr 122.00
J 933.00. 935.41 935.41 936.02 0.011589 7.00 31.16 31.41
. 0.84
01 _
~16
• 50.yr _
174.00 93300 935.81 935.81 936.46 0,011042 7.72 45.03.
. 38.55 0.84
01 16 100-yr 204.00 933.00 935.96 935.96 936.68 0.011618 8.22 51.11 41 29 087
01 15 •1-yr 51.00 932.00 933.05 933.25 933.77 0.037215 6.80 7.52 10.59 1.35
01 15 2-yr 67.00 932.00 93118 933.46 934.09 0.039286 7.70- 8.99 13.19 1.42
01 15 10-yr 122 00 932.00 933.58 934.00 934.88 0.035587. 9.35' 15.98 21.62 1.44
01 15 50-yr 174.00 932.00 933.89 934.38 935.37 0.032197 10.24 23.70 28.13. 1.42
01 15 100-yr 204.00 932.00 934.05 934.56 935.59. 0.030012 10.55 28.69 31.67 1.39
01 14 A-yr 51.00 930.00, 931.65' 931.651 932311 0.0220251 6.52, 7.82. 5.98* 1.00,,
01 14 2-yr 67.00 930.00 931.941 931.94 932691 0022433, 6.98 9 60 6.41 1.01
01 114 10-yr 122.001 930.00 932.731 932.941 933441 0.013878, 7.22 28.62. 44.48 0.84
01 14 I50.yr 174.001 930.001 932.98 93125 933.85 0.
016414 8.41 41 12. 57.26. 0.93
07 --- 7,74 100.yr 204.001
-- - -
930.004
- - - ---
933.0771 933.381 --
- - - 934.64F _
0.0182421 9.08' 46.471 5941, 0.99
._- -
- -
01 3 11- T._ 5100: 930.00 931.39 931.50i 93179- 0.022294
-- 6051 17.381 ---37.531 1 --~ 1 .05
01 __
13 2- 67.00
930.00 ..
931.39
931.59, _
932.08! _
0.039787'.
8.05'
17 13
•
_ 37.45'.
1.40
01 13 10.yr 122.00 930.00 931.52' 931.90, 932.05, 0.070149 11.60 22.28 39.00, 1.90
01 13 50.yr 174.00 930 00 932.30 932.12 932.67 0.012968 7.02: 56.75 53.39 0.09
01 13 - .1 o0-yr 204 00 930.00 932.39 932.26 932.82 0.014363 7.63 61.97 56.25 0.94
01 •12 ?1-yr 51.00 930.00 930.88 930.95 931.34 0.027229 5.46 9.34 13.27 1.15
01 12 2-yr 67.00 930 00 931.14 931.12 931 55 0.016538 5.13 13.55 21.35 0.94
01 12 10-yr 122.00 930.00 931.52 931.62 932.11 0.015941 6 30 25.25 40.61 0.97
01 12 50-yr 174.00 930.00 931.93 931.93 932.44 0.010718. 6.19 46.02 61.38 0.83
01 12 100. 204.00 930.00 932.09 932.09 932.60 0.009798 6.29. 56.61' 66.67 0.81
01 - 11 -.- ?1 yr --- -- - 51.00 928.00 929.78 929.76* 930.36 - 0.015519' 6.33 10.40'•
. 11.91-
-- - . --0.86`
.
-
Ot 11 •--
2-yr 67.00 ..
28.00
928,03'
929.99 ..
929 99'
930.70
0.0160661
7.13 .
13.07
13.88
0.92
01 11 10.yr 122.00 928.00 930.71 930.86 931.43 0.013194 7.83 32,38 40.15 0.86
01 11 50-yr 174.00 928 00 930.97 931.24 931.85 0.015590 9 09 44.43 50.04 0.95
01 11 100.yr _
204 00 928.00 931.10 931.36 932.03 0.016500 9.62 50.94 53.29 0.98
01 10 1-yr 51.00 928.00 929 85 929.49 930.05 0.007399 3 52 14.51 14.76 0.62
01 10 2-yr 67.00 928.00 930 04 929.69: 930.27 0007750 3.85 17.43 17.50 0.65
of 10 10-yr _ 122.00 928.00 929.82 930,18 931.00 0.046135 0.69 14.04 14 49 1.56
01 10 50-yr 174.00 928.00 930.15 930.56 931.43 0.037912 9.08 19.55 21.53 1.46
01 10 100.yr 204.00 928.00 930.33 930.76 931.63 0.032382 9.201 2194 28.07. 1,38
-01 9 1-yr 51.00 928.00'. 929.39 929.39. 929.82 0.0144001 5.36 11.71 21.00 0.88
Ot 9 '2-yr 67.00 928.00 929.61. 929.611 930.061 0.012461' 5.61 17.11' 28.24 0.85'
_01 9 10-yr _ 122.00
J 928.00 930.12 _ 93012 _ 930611 _
0.010,476; 6.35. 35.54 43.62' 0.82
01 9 ? 50-yr 174.00 928.00 930.42 930.42 _
930.97 0.010585 7,05 49.67 50.251 0.84
01 9 100-yr 204.00 92800. 930.56 930.56 931.15 0.010851 7.44 56.88 53.31 0 86
01 8
. 1-yr
- 51 00
? 925 00 925 60 926 15 928.44 0.337321 13.52 3.77 9.16 3.71
01 8 2-yr 67.00 925.00 92570 926.31 92079 0.308973 14.11 4.75 10.12 3.63
01 8 10-yr 122.00 925 00 925.99 926.77 929.49 0.236414 15.01 8.13 12.91 3.33
Ot 8 50-yr 174.00 925.00 926.24 927.14 929.89 0.161104 15.36 11.50 14.70 2.90
HEC•RAS Plan EX Rner Koemer Reach 01 (Continu ed)

{leach
Rnrer
Sts Profile
T 0 Total _
M n Ch EI J W.S. Elev
Cnl W.S. E.
G. Elev I E.
G. Slope
Vol ChM
Flow Ares
Top VVdlh
Froude S Chl

..
.-- - _
_ .--- (cfs)
--•_ - - - (fl) ---
- _ -(n)
- (h) 1-
- -------- -(h) --`_ - (tVft) (Ns) :.
-._ . _ (sQ 8) ..: (n)
.._-
01 100-yr _ 204.00 925 00 926.37. 927.31 930.08'. 0.134981 15.50 1359, 15.10 2 72
01 .7 - '1-yr - 5100 922.00 92].15 923.381- - 923.99 0.115134 -- -7.36. 6.99 8.96 140
-01- 7 2-yr 67.00 92200. 923 92361. 924 0.120554 8.31', 8.27 987 146
01
_ 7
•
-_ - 10-yr
_---?
--- 122 00
--J 922 00 923 66 924.22 925.36 0.129120 10 65: 12.48 12 38 1 60
01 7 50-yr 17400. 92200 92389. 92468. 926.25. 0.148823. 12.68. 15.52: 1391, 1.16,'.
01 7 1 CO-yr 204 00 922 00 924 01 92490 926 72 0 158076 13 68 17.16 14 70 1 84
01 6
?
---- 1-yr
- -
----- 51 00
- - 91700 918 07 918 47 919 30 0.285871 8 88 5 74 10 21 2.09
01- fi 2yr
- 6700 91700 918.19 918.62 91962 0272021 960 698 1055 208
pt 6 10-yr 122 00 917.00 918 52 919.13 920.57 0253484 11 47 10.64 11 51 2 10
01 6 50-yr 174 00 917.00 918 80 919.53 921.23 0.235054 12 52 13 89 1229 2 08
01 6 100-yr 204 00 917.00 918 94 919.73 921.58 0228236 13 03 15 66 12 70 2 07
01 5 ,I-yr 51 00 915.00 917 74 916 54 917.80 0.003433 1.93 26 41 14.86 026.
01 5 2-yr 67.00 915.00 918.10 916 71 918 17 0003413 2.10 31.86 15.52 0.26
01 5 10-yr 122 00 915.00 919 05 917.18 919.15 0003604 2.58 47.37 17.25 0.27
01 5 50-yr 174 00 915 00 919.71 917 56 919.85 0.003881 2 93 59.30 18.47 0.29
Ot 5 100-yr 204 00 915.00 92005. 917.75 920 20 0004017 3 11 65.60 1909 0 30
01 ?4 1-yr 51 00 915.00 917 53 917.65 0.007192 2 79 18.29 9 98 0 36
01 4 _2•yr 67 00 915.00 917.87 918.01 0.007703 1 07 21.79 10.71 0 38
01 4 10-yr 122 00 915 00 918.75 918.97 0.009032 3.78 32 28 13 01 0.42
Ot 4 •50-yr 174.00 915.00 919.38 919.66 0.009840 4.25 40.90 14.67 045,
01 /4 :100-yr 204.00 915.00 919.69 920.00. 0.010104 4.47" 45.67 15.51 0.46'.

-_ - - -- E- -
01 1 it•yr 5100- 915.00 916
.40~ 916.401 91897 0,061022' I
6.07 8.461 7.54 1.00!
01 J :2-yr -_
67 00 ~ 915.00 _
916.65. 918.651 917 30i 0.0596581 }
8.471 10.36 8.07 _
- 1.01

01
3
_.10-yr _
122.00
915.00
917.38
917.32, -1--
918 -.1& '--
0.051563 --
7.241
16.84.
9.66 - -- a
0. SIT
01 J 50-yr 174.00 915.00 917.97'. 918.86 0.04552) 7.60: 22.88 10.93 0.93,
01 3 100-yr 204.00 915.00 918.25, 91920. 0.044222. 7.82 26.10 11.67 0 92
01 2 t-Yr 51 00 913 00 916 02 914.68 916.11 0.005177 2.45 20.84 10.74 0.31
01 2 2-yr 67 00 913 00 916 29 914 93 916.41 0.006173 2 81 23.86 11.34 0 34
01 2 10 yr 122.00 913.00 916 98 915 59 917.20 0.009089 3 79 32.20 12 86 0.42
01 2 50-yr 174 00 913.00 917.46 916.09 917.78 0.011286 4.50 38.67 13.92 0 48'
07 2 10Oyr 204.00 913.00 917.70 916.34 918.07 0.012418 4.86 42.00 1444. 0.50
01 1 1-yr 51.00 914.00 915 32 915.32 915.77 0.061372 5.36 9.51 10.77 1 01
01 1 2-yr 67.00 914.00 915.52 915.52 918.02. 0.059351 5.70 11.75 11.79 1.01'
01 1 '.10-yr 122.00 914.00 916.05 91605, 918.71: 0.055307. 6.51 18.75 14.5] _ 1.01
01 1 50-yr 174.00 _ 914.00 916.45 916.45 91220 0.052441' 6.98 24.94 16.66 1.01!
01 1 100- 204 00 914.00 916.64 916.64 917.45 0.051955 7.24 28.19 17.68 1.01
(/ ?i / ( \ \ \ 1 Z C
I/ V)
\
\\\ \ \\\ i ??11 / / I I ( / N
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uj a)
ai'
? \ 1j11111? ? <,?1 _ 11 11 % // ? ? I 1 ? U N
49
Will /
II 111111 \I I` I :,,/i // 1 z
Y N
/ /Ti OH O
O
\ I I I ,..r I I .? ? w o0
Ijl \ 1 < I ? ?o i
\?` 1/ ?? lr DE oOD u
/ c •-
/ \\ «f J 0Nlu
0 0'
Ou-
/ 1 I I I v
CM
N9
/r p N C __ O
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03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
RS = 20
.08 - .035 - .08
944 Legend
WS 100-yr
WS 50-yr
WS 10-yr
WS 2-yr
WS 1-yr
Ground
942 °
Bank Sta
940
r
c
0
6
a?
W
938
936
934 .
0 20 40 60 80 100
Station (ft)
i
•
i
•
•
•
•
•
•
•
•
•
•
•
s
•
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
IRS 19
.08 - .08
944 0 Legend
3
5 -?
WS 100-yr
WS 50-yr
WS 10-yr
WS 2-yr
WS 1-yr
Ground
•
Bank Sta
942
c
m 940
a?
w
938
936 .
0 10 20 30 40 50 60 70
Station (ft)
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
IRS 18
.08 .035 - .08
941
Legend
WS 100-yr
WS 50-yr
WS 10-yr
WS 2-yr
WS 1-yr
940
Ground
•
Bank Sta
939

c
938 -
a?
w
937
936
935
0 10 20 30 40 50 60 70 80
Station (ft)
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
IRS 17
.08 - .035 .08
942
Legend
WS 2-yr
WS 1-yr
r
WS 100-yr
WS 50-yr
WS 10-yr
Ground
940 O
Bank Sta
938
c
0
.m
n
a?
W
936
934
932 .
0 10 20 30 40 50 60 70
Station (ft)
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
IRS 16
- .08 - .08
942 0
3 Legend
5 WS 100-yr
WS 50-yr
WS 10-yr
WS 2-yr
WS 1-yr
Ground
940 •
Bank Sta
938

c
0

iv
w
936
934
932
0 20 40 60 80 100 120
Station (ft)
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
IRS 15
R - - - --- .OS ---- --; .035 >----- - --- .08 -- - ---
940 Leg- -
end
- '
WS 100-yr
WS 50-yr
WS 10-yr
WS 2-yr
WS 1-yr
Ground
0
Bank Sta
938
r
c
936
a
w
934
932
0 20 40 60 80 100 120
Station (ft)
•
•
•
•
•
•
•
•
•
s
s•
•
•
•
•
•
•
•
•
•
•
•
•
•
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
IRS 14
.08 .08
940 0
3 Legend

5 _
WS 01 0 ry
WS 50-yr
-r-
WS 10-yr
WS 2-yr
WS 1-yr
Ground
938
Bank Sta
936

c
a
.7?

w
934
932
930 .
0 20 40 60 80 100 120 140
Station (ft)
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
IRS 13
.08 .08 -
936 0
3 Legend
5
WS 100-yr
WS 50-yr
WS 10-yr
WS 1-yr
935 WS 2-yr
Ground
0
Bank Sta
934
c
933
a?
w
932
931
930 .
0 20 40 60 80 100 120 140
Station (ft)
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
RS=12
.08 .035 -.= .08 --
935 Legend
WS 100-yr
WS 50-yr
WS 10-yr
WS 2-yr
WS 1-yr
Ground
934 •
Bank Sta
933

c
0

W
932
931
930
0 20 40 60 80 100 120
Station (ft)
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
IRS 11
.08 .08
934 Legend
3
5 WS 100-yr
WS 50-yr
WS 10-yr
WS 2-yr
WS 1-yr
933 '
Ground
0
Bank Sta
932
c
931
a?
w
930
929
928
0
20 40 60 80 100
120
Station (ft)
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
RS=10
.08 .035 - .08
934
Legend
WS 100-yr
WS 50-yr
WS 2-yr
WS 1-yr
WS 10-yr
933
Ground
0
Bank Sta
932

c
931
cz
w
930
929
928
0 20 40 60 80 100 120
Station (ft)
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
RS=9
.08 - .035- - .08 -
933
Legend
WS 100-yr
WS 50-yr
WS 10-yr
4
WS 2-yr
WS 1-yr
Ground
932 °
Bank St,
931

c
0

a?
W
930
929
928
0 20 40 60 80 100
Station (ft)
934
932
930

0
io
c
W
928
926
924
0
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
RS=8
.08 - .035 - .08
20 40 60 80
Legend
WS 100-vr
.. - av-p
WS 10-yr
WS 2-vr
-y,
•
Ground
0
Bank Sta
100
Station (ft)
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
RS =7
.08 - .06 .08 -
934
Legend
WS 100-yr
WS 50-yr
WS 10-yr
WS 2-yr
1-yr
WS
932 --
-
Ground
•
Bank Sta
930

c
,ZZ
928

w
926
924
922
0 20 40 60 80 100
Station (ft)
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
RS =6
.08 .06 .08 -
934 Legend
WS 100-yr
WS 50-yr
WS 10-yr
932 WS 2-yr
WS 1-yr
Ground
0
Bank Sta
930
928
926-

c
0

a?
W
924
922
920
918
916 .
0 20 40 60 80 100
Station (ft)
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
RS =5
.08 ~< .06 .08
932
Legend
WS 100-yr
WS 50-yr
WS 10-yr
930
WS 2-yr
WS 1-yr
Ground
e
928 Bank Sta
926 -
924

0

LU
922
920
918
916
914 .
0 10 20 30 40 50 60 70
Station (ft)
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
s
•
•
•
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•
•
•
•
•
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•
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•
•
•
•
•
•
•
•
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
RS =4
.08 .06 .08
930
Legend
WS 100-yr
WS 50-yr
WS yr
928 WS 2-yr
WS 1-yr
Ground
Bank Sta
926
924

922

w
920
918
916
914 .
0 10 20 30 40 50 60 70
Station (ft)
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
RS =3
- .08 - .06 .08 -
930
Legend
WS 100-yr
WS 50-yr
WS 10-yr
928 WS 2-yr
WS 1-yr
Ground

Bank Sta
926
924

c
922
a?
w
920,
918
916
914 .
0 10 20 30 40 50 60 70
Station (ft)
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
RS=2
.08 06 08
922
Legend
WS 100-yr
WS 50-yr
WS 10-yr
WS 2-yr
WS 1-yr
Ground
920
0
Bank Sta
918
c
0
cu
o
Ul
916
914
912
0 10 20 30 40 50 60 70 80
Station (ft)
03201_KoernerPlace Plan: Existing Conditions 9/27/2005
Flow: Exisitng Conditions
RS=1
.08 .06 - .08
921 Legend
WS 100-yr
WS 50-yr
WS 10-yr
WS 2-yr
920
WS 1-yr
Ground
•
Bank Sta
919
918

c
0

W
917
916
915
914
0 10 20 30 40 50 60
Station (ft)
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MEMO
TO: Mr. Daryl Lamb, Division of Water Quality
FROM: Debbie Dodson
RE: Koerner Place Stream Restoration
DATE: November 1, 2005
Enclosed is the findings report and design along with the permit request for
the 401 permit.
If you have any questions, please call the office at 336-750-0522.
Pilot View. Inc. (Resource Conservation & Development]
2714 HENNING DRIVE • WINSTON-SALEM, NORTH CAROLINA 271 06
PHONE [phone] • FAX [phone]
"Partners In Progress"
Office Use Only' Form Version February 2002
USACE Action ID No. DWQ No.
If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than
leaving the space blank.
1. Processing M
1. Check all of the approval(s) requested for this project: Rak-tKE v D
® Section 404 Permit NOV 2 - 2005
? Section 10 Permit
® 401 Water Quality Certification DENR - WATER QUALITY
? Riparian or Watershed Buffer Rules V.=.W,,Z3AND STOR14VATER ERANdCN
2. Nationwide, Regional or General Permit Number(s) Requested: NW - 27
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here:
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (see section VIII - Mitigation), check here: ?
IL Applicant Information
1. Owner/Applicant Information
Name: Sandra Jennings, President
Mailing Address: North Carolina Housing Services & Management Corp.
8 West Third Street Suite 565
Winston-Salem NC 27101
Telephone Number: [phone] Fax Number: [phone]
org
E-mail Address: [e-mail]
2. Agent Information (A signed and dated copy of the Agent Authorization letter must be
attached if the Agent has signatory authority for the owner/applicant.)
Name: Rocky Powell
Company Affiliation: Clear Creeks Consulting
Mailing Address: 1317 Knopp Road
Jarrettsville MD 21084
Telephone Number: [phone] Fax Number: Same
E-mail Address: [e-mail]
Page 1 of 9
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Koerner Place Stream Restoration
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): 6885-69-6509, 6885-79-1718: 6886-70-0755
4. Location
County: Forsyth Nearest Town: Kerrie sville
Subdivision name (include phase/lot number):
Directions to site (include road numbers, landmarks, etc.): Take Business Route 40
To Rte 66 Exit head south approximately'/2 mile turn left on Birch Lane, follow into
Koerner Place Retirement Community
5. Site coordinates, if available (UTM or Lat/Long):
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Describe the existing land use or condition of the site at the time of this application:
Upper reaches of project on Sunlight Baptist Church property, are mowed lawn, cemetery.
and wooded along rear property boundary. The middle and lower reaches at the rear of the
retirement community is a wooded stream corridor,
7. Property size (acres): Church property - 2.25 acres, Retirement Community - 21.39 acres
8. Nearest body of water (stream/river/sound/ocean/lake): West Fork of the Deep River
9. River Basin: Cape Fear River
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http-//h2o.enr.state.ne.us/admin/maps/.)
Page 2 of 9
10. Describe the purpose of the proposed work:
Install an extended detention stormwater wetland pond on adjacent church property to
provide water quality and water quantity management for a highly urbanized watershed.
Stabilize 500 feet of eroding ephemeral channel, 580 feet of eroding intermittent channel,
and 220 feet of a deeply incised perennial stream along the rear of the retirement community
property.
11. List the type of equipment to be used to construct the project:
Tracked excavators with hydraulic thumbs, tracked trucks and tracked loaders, dump trucks
and misc. small trucks.
12. Describe the land use in the vicinity of this project:
Although the stream corridor along the middle and lower project reaches is wooded, the
dominant land use in the watershed is commercial (retail shopping centers, small businesses,
car dealerships, gas stations, restaurants, etc. ) concentrated along Route 66; with mowed
lawns, a cemetery, and gravel parking lots on the adjacent church property; old field and
grasslands on adjacent vacant lots to the north; and moderate-density multi-family residential
and parking within the retirement community property.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
A pre-application meeting was held on-site September 29, 2005 to present the project to the
permitting agencies. The following persons were in attendance: Mr. John Thomas, USACOE;
Mr. Rocky Powell, Clear Creeks Consulting, and Mr. Carl Corse, CNA Engineers.
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
None anticipated
Page 3 of 9
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
1. Provide a brief written description of the proposed impacts:
Temporary impacts include: 1) Removal of existing vegetation at the rear of the church
property to install stormwater wetland pond and at various points along the ephemeral and
intermittent channels at the rear of the retirement community to allow grading, sloping, and
matting of the banks.
Permanent impacts include: 1) Placement of fill along 175 feet of deeply incised perennial
stream toraise the streambed, reconnect the channel with its floodplain and provide grade
control by installing log-boulder step pools; and 2) placement of fill in abandoned
intermittent channel sections after constructing a new channel that is reconnected to the
floodplain.
2. Individually list wetland impacts below:
Wetland Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
acres Located within
100-year Fooodplain**
es/no Distance to
Nearest Stream
linear feet
Type of Wetland***

* List each impact separately and identify temporary impacts. impacts include, but are not dmited to: mechanized cieanng, grading, 1u4
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
" 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http:/hvww.fema.gov.
List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.)
List the total acreage (estimated) of all existing wetlands on the property: 0 acres
Total area of wetland impact proposed: 0 acres
Page 4 of 9
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact
Site Number
(indicate on ma)
Type of Impact* Length of
Impact
(linear feet)
Stream Name** Average Width
of Stream
Before Impact Perennial or
Intermittent?
(please secif )
E Permanent 500 NA 3 - 6 ft Ephemeral
IT Temporary 405 Unnamed Tributary 6 - 8 ft Intennittent
EP Permanent 175 Unnamed Tributary 6 - 8 ft Intermittent
PT Temporary 45 Unnamed Tributary 8 - 10 ft Perennial
PP Permanent 175 Unnamed Tributary 25 - 30 ft Perennial

• List each impact separately and identity temporary unpacts. impacts mctuae, out are 110L mmiw Lo. kwv1;1w uuu UZ vVliuu.u ..I-."Y,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
Cumulative impacts (linear distance in feet) to all streams on site: 800 feet-
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean
nnit nn-.r nthPr wntPr of the T T 4 ) helnw-
Open Water Impact
Site Number
(indicate on ma) V
Type of Impact* Area of
Impact
(acres)
Name of Waterbody
(if applicable) Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.)

5. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be included
above in the wetland and stream impact sections. Also, the proposed pond should be described here
and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ® uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down
valve or spillway, etc.): The pond will be excavated and an earthen embankment constructed.
Embankment will have an impervious core, a 12 inch low flow pipe for drawdown and a concrete
weir spillway with a boulder cascade outfall channel.
Proposed use or purpose of pond: The stormwater wetland pond is an integral part of the restoration
effort and will provide water quality and water quantity (1-2 YR storms) management for highly
urbanized watershed upstream of stream project.
Size of watershed draining to pond: 39.22 acres
Expected pond surface area: 22,850 sq ft
Page 5 of 9
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
The general restoration approach includes installing a stormwater wetland pond to provide water
quality and quantity management for a highly urbanized watershed and reconstructing reaches of
the Unnamed Tributary to reestablish meanders, reconnect the channel with the floodplain, and
stabilize eroding bed and banks.
The temporary impacts associated with mechanical clearing are limited to those stream banks
where grading is essential to establish stable channel geometry. All disturbed areas impacted
within the limits of the project will be seeded with native grasses and planted with native trees
and shrubs. All disturbed areas impacted outside the limits of the project will be seeded with
grasses and clover.
The permanent impacts are associated with fill. The majority of the fill placed will involve
backfilling of old channels after new channels have been constructed. Some sections of the
existing channels that remain will be reconstructed by raising the streambed to reconnect the
channel to its floodplain and reconstructing narrower cross-section to improve habitat and
sediment transport. In addition, log-boulder step-pools will be constructed along the lower reach
where the streambed will be raised significantly. Avoidance of these impacts would be
inconsistent with many of the objectives of this project including: reconnecting the stream
channels with their floodplain, improving habitat by constructing a narrower and deeper
baseflow channel, improving sediment transport capacity, reducing sedimentation, and protecting
the stream banks from scour.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
Page 6 of 9
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o.enr.state.nc.us/ncwet]ands/strmgide.html.
Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
Given the type of project it is not anticipated that mitigation will be required. In fact, the
project itself could be viewed as mitigation for historic land use impacts to the Unnamed
Tributary. As a result of this project 39.22 acres of highly urbanized watershed will be
managed for water quality and quantity, 0.5 acres of wetlands will be created, 500 feet of
eroding gully and 800 feet of eroding stream channel will be stabilized, and sediment and
nutrient loadings to the West Fork of the Deep River resulting from eroding banks and
eroding gullies will be significantly reduced. In addition, the Koerner Place Retirement
Community will establish a conservation easement that permanently protects the stormwater
wetlands and stream corridor.
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that
you would like to pay into the NCWRP. Please note that payment into the NCWRP must be
reviewed and approved before it can be used to satisfy mitigation requirements. Applicants
will be notified early in the review process by the 401/Wetlands Unit if payment into the
NCWRP is available as an option. For additional information regarding the application
process for the NCWRP, check the NCWRP website at t,ttp://l,2o.enr.stite.nc.tis/wrp/index.litni. If
use of the NCWRP is proposed, please check the appropriate box on page three and provide
the following information:
Amount of stream mitigation requested (linear feet): 0 ft
Amount of buffer mitigation requested (square feet): 0 ft2
Amount of Riparian wetland mitigation requested (acres): 0 acres
Amount of Non-riparian wetland mitigation requested (acres): 0 acres
Amount of Coastal wetland mitigation requested (acres): 0 acres
Page 7 of 9
IX. Environmental Documentation (DWQ Only)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes ® No ?
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No
X. Proposed Impacts on Riparian and Watershed Buffers (DWQ Only)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 213 .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 213 .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Yes ? No ® If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* Impact
(square feet) Multiplier Required
Mit
igation 3
2 1.5
Total
' Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
Page 8 of 9
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or.0260.
XI. Stormwater (DWQ Only)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
XH. Sewage Disposal (DWQ Only)
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.
XM. Violations (DWQ Only)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).

Appli *in Agent's Si ture 'Date
(Agent's signature is id only if an a thorization letter from the applicant is provided.)
Page 9 of 9

NORTH CAROLINA HOUSING FOUNDATION
8 WEST THIRD STREET, SUITE 565
WINSTON SALEM, NC 27101
Pau to t4t
I Orbtr of L) A
WACHOVIA
Wachovia Bank, N.A.
wachoNa.com
Air

2008
66-21/530
BRANCH 06900
Elate
I $ do

1120020013111 I:0 5 3000 2 L 9i: 20B 7 3 60 70 0 5 411'
Office Use Only: Form Version FebAiary 2002
USACE Action ID No. DWQ No.
If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than
leaving the space blank.
L Processing
D5
. Check all of the approval(s) requested for this project: v
1
N Section 404 Permit NOV 2 - 2005
? Section 10 Permit
N 401 Water Quality Certification DENR - WATER QUALITY
? Riparian or Watershed Buffer Rules MILANDS AND STORMWATER BRA14CH
2. Nationwide, Regional or General Permit Number(s) Requested: NW - 27
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: N
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (see section VIII - Mitigation), check here: ?
IL Applicant Information
1. Owner/Applicant Information
Name: Sandra Jennings, President
Mailing Address: North Carolina Housing Services & Manaizement Corp.
8 West Third Street Suite 565
Winston-Salem NC 27101
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: Sjenningsna nchsm org
2. Agent Information (A signed and dated copy of the Agent Authorization letter must be
attached if the Agent has signatory authority for the owner/applicant.)
Name: Rocky Powell
Company Affiliation: Clear Creeks Consultiniz
Mailing Address: 1317 Knopp Road
Jarrettsville MD 21084
Telephone Number: [phone] Fax Number: Same
E-mail Address: clearcreeks@a clearviewcaty net
Page 1 of 9

III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Koerner Place Stream Restoration
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): 6885-69-6509; 6885-79-1718: 6886-70-0755
4. Location
County: Forsyth Nearest Town: Kernersville
Subdivision name (include phase/lot number):
Directions to site (include road numbers, landmarks, etc.): Take Business Route 40
To Rte 66 Exit head south approximately !/2 mile turn left on Birch Lane, follow into
Koerner Place Retirement Community
5. Site coordinates, if available (UTM or Lat/Long):
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Describe the existing land use or condition of the site at the time of this application:
Upper reaches of project, on Sunlight Baptist Church property, are mowed lawn, cemetery,
and wooded along rear property boundary The middle and lower reaches at the rear of the
retirement community is a wooded stream corridor,
7. Property size (acres): Church property- 2.25 acres Retirement Community- 21.39 acres
8. Nearest body of water (stream/river/sound/ocean/lake): West Fork of the Deep River
9. River Basin: Cape Fear River
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http•//h2o enr.state nc.us/admin/maps/.)
Page 2 of 9
10. Describe the purpose of the proposed work:
Install an extended detention stormwater wetland pond on adjacent church property to
provide water quality and water quantity management for a highly urbanized watershed.
Stabilize 500 feet of eroding ephemeral channel, 580 feet of eroding intermittent channel,
and 220 feet of a deeply incised perennial stream along the rear of the retirement community
property.
11. List the type of equipment to be used to construct the project:
Tracked excavators with hydraulic thumbs, tracked trucks and tracked loaders, dump trucks
and misc. small trucks.
12. Describe the land use in the vicinity of this project:
Although the stream corridor along the middle and lower project reaches is wooded, the
dominant land use in the watershed is commercial (retail shopping centers, small businesses,
car dealerships, gas stations, restaurants, etc. ) concentrated along Route 66; with mowed
lawns, a cemetery, and gravel parking lots on the adjacent church property; old field and
grasslands on adjacent vacant lots to the north; and moderate-density multi-family residential
and parking within the retirement community property.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
A pre-application meeting was held on-site September 29, 2005 to present the project to the
permitting agencies. The following persons were in attendance: Mr. John Thomas, USACOE;
Mr. Rocky Powell, Clear Creeks Consulting, and Mr. Carl Corse, CNA Engineers.
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
None anticipated
Page 3 of 9
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs : may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
1. Provide a brief written description of the proposed impacts:
Temporary impacts include: 1) Removal of existing vegetation at the rear of the church
property to install stormwater wetland pond and at various points along the ephemeral and
intermittent channels at the rear of the retirement community to allow grading, sloping, and
matting of the banks.
Permanent impacts include: 1) Placement of fill along 175 feet of deeply incised perennial
stream toraise the streambed, reconnect the channel with its floodplain and provide grade
control by installing log-boulder step pools; and 2) placement of fill in abandoned
intermittent channel sections after constructing a new channel that is reconnected to the
floodplain.
2. Individually list wetland impacts below:
Wetland Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
acres Located within
100-year Fooodplain**
es/no Distance to
Nearest Stream
linear feet
Type of Wetland***

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
" 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
onlineathttp://www.fema. gov.
*'* List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.)
List the total acreage (estimated) of all existing wetlands on the property: 0 acres
Total area of wetland impact proposed: 0 acres
Page 4 of 9
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact
Site Number
(indicate on ma)
Type of Impact* Length of
Impact
(linear feet)
Stream Name* * Average Width
of Stream
Before Impact Perennial or
Intermittent?
(please specify)
E Permanent 500 NA 3 - 6 ft Ephemeral
IT Temporary 405 Unnamed Tributary 6 - 8 ft Intermittent
IP Permanent 175 Unnamed Tributary 6 - 8 ft Intermittent
PT Temporary 45 Unnamed Tributary 8 -10 ft Perennial
PP Permanent 175 Unnamed Tributary 25 - 30 ft
------------ - Perennial

List each impact separately and identify temporary impacts. impacts inciuae, our are not rmULLU io: GUIVUIw tutu ?avt.awu „k,-.uy,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss(gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
Cumulative impacts (linear distance in feet) to all streams on site: 800 feet-
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean
on/i one nttinr water of the T T R ) hP.lnw-
uaau u
Open Water Impact
Site Number
indicate on ma

Type of Impact*
Area of
Impact
(acres)

Name Waterbody
( applicable)
Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.

5. Pond Creation
if construction of a pond is proposed, associated wetland and stream impacts should be included
above in the wetland and stream impact sections. Also, the proposed pond should be described here
and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ® uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down
valve or spillway, etc.): The pond will be excavated and an earthen embankment constructed.
Embankment will have an impervious core, a 12 inch low flow pipe for drawdown and a concrete
weir spillway with a boulder cascade outfall channel.
Proposed use or purpose of pond: The stormwater wetland pond is an integral part of the restoration
effort and will provide water quality and water quantity (1-2 YR storms) management for highly
urbanized watershed upstream of stream project.
Size of watershed draining to pond: 39.22 acres Expected pond surface area: 22,850 sq ft
Page 5 of 9
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
The general restoration approach includes installing a stormwater wetland pond to provide water
quality and quantity management for a highly urbanized watershed and reconstructing reaches of
the Unnamed Tributary to reestablish meanders, reconnect the channel with the floodplain, and
stabilize eroding bed and banks.
The temporary impacts associated with mechanical clearing are limited to those stream banks
where grading is essential to establish stable channel geometry. All disturbed areas impacted
within the limits of the project will be seeded with native grasses and planted with native trees
and shrubs. All disturbed areas impacted outside the limits of the project will be seeded with
grasses and clover.
The permanent impacts are associated with fill. The majority of the fill placed will involve
backfilling of old channels after new channels have been constructed. Some sections of the
existing channels that remain will be reconstructed by raising the streambed to reconnect the
channel to its floodplain and reconstructing narrower cross-section to improve habitat and
sediment transport. In addition, log-boulder step-pools will be constructed along the lower reach
where the streambed will be raised significantly. Avoidance of these impacts would be
inconsistent with many of the objectives of this project including: reconnecting the stream
channels with their floodplain, improving habitat by constructing a narrower and deeper
baseflow channel, improving sediment transport capacity, reducing sedimentation, and protecting
the stream banks from scour.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
Page 6 of 9
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
http: //h2o. enr. state.nc.us/ncwetiands/strm,gide. html.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
Given the type of project it is not anticipated that mitigation will be required. In fact, the
project itself could be viewed as mitigation for historic land use impacts to the Unnamed
Tributary. As a result of this project 39.22 acres of highly urbanized watershed will be
managed for water quality and quantity, 0.5 acres of wetlands will be created, 500 feet of
eroding gully and 800 feet of eroding stream channel will be stabilized, and sediment and
nutrient loadings to the West Fork of the Deep River resulting from eroding banks and
eroding gullies will be significantly reduced. In addition, the Koerner Place Retirement
Community will establish a conservation easement that permanently protects the stormwater
wetlands and stream corridor.
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that
you would like to pay into the NCWRP. Please note that payment into the NCWRP must be
reviewed and approved before it can be used to satisfy mitigation requirements. Applicants
will be notified early in the review process by the 401/Wetlands Unit if payment into the
NCWRP is available as an option. For additional information regarding the application
process for the NCWRP, check the NCWRP website at htt-0/h2o.enr.state.nc.us/wrp?index.htm If
use of the NCWRP is proposed, please check the appropriate box on page three and provide
the following information:
Amount of stream mitigation requested (linear feet): 0 ft
Amount of buffer mitigation requested (square feet): 0 ftZ
Amount of Riparian wetland mitigation requested (acres): 0 acres
Amount of Non-riparian wetland mitigation requested (acres): 0 acres
Amount of Coastal wetland mitigation requested (acres): 0 acres
Page 7 of 9
IX. Environmental Documentation (DWQ Only)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes ® No ?
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No
X. Proposed Impacts on Riparian and Watershed Buffers (DWQ Only)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 213 .0233
(Meuse), 15A NCAC 213 .0259 (Tar-Pamlico), 15A NCAC 213 .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Yes ? No ® If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* Impact
(square feet) Multiplier Required
Mitigation
1 3
2 1.5
Total
' Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
Page 8 of 9
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or.0260.
XI. Stormwater (DWQ Only) .
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
XII. Sewage Disposal (DWQ Only)
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.
XM. Violations (DWQ Only)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).

AppliAgent's Siture 'Date
(Agent's signature is id only if an a thorization letter from the applicant is provided.)
Page 9 of 9
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