20020820 Ver 1_Complete File_20020625

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5 Michael F. Easley
t'Governor
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
Town of Morrisville
100 Town Hall Drive PO Box 166
Morrisville, NC 27560
June 25, 2002 "s.
Re: Stream and Buffer Restoration
Morrisville Community Park
Wake County
DWQ # 020820
APPROVAL of 401 Water Quality Certification and Neuse Buffer Approval with Additional Conditions
Dear Madame/Sir:
You have our approval, in accordance with the attached conditions, to relocate 2700 linear feet of an unnamed
tributary to Crabtree Creek in order to restore approximately 3100 feet of stream and the associated 50 feet Neuse riparian
buffers as described in your application received by the Division of Water Quality on May 13, 2002 and modifications
received June 10, 2002. After reviewing your application, we have determined that this relocation is covered by General
Water Quality Certification Number 3353. This Certification allows you to use Nationwide Permit Number 27 when issued
by the U.S. Army Corps of Engineers. In addition, you should get any other federal, state or local permits before you go
ahead with your project including (but not limited to) Sediment and Erosion Control, Non-Discharge and Water Supply
Watershed regulations. Also this approval will expire when the accompanying 404 permit expires unless othF1-
specified in the General Certification.
This approval is only valid for the purpose and design that you 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 and the additional conditions listed below:
1. In order for the stream and buffer restoration to be used as compensatory mitigation or mitigation credit the stream
and its buffers must be preserved in perpetuity through a legally binding mechanism such as a permanent
conservation easement held by a third party. You must receive additional written approval from this Office for this
mechanism before any compensatory mitigation credit can be provided.
2. The stream and buffer restoration must be constructed, maintained and monitored according to the approved
plans in the application and application modifications. Any repairs or adjustments to the site must be made
according to the approved plans or must receive written approval from this Office to make the repairs or
adjustments.
3. The enclosed "Certification of Completion Form" is to be used to notify DWQ when all work included in the 401
Certification has been completed.
4. In order for this project to be used as compensatory mitigation for other specific projects you must obtain written
approval from this Office. The request should include the amount of stream length and buffer area credit requested
for accounting purposes. Please specify DWQ project No. 020820 when making your request.
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, P.O. Box 27447, Raleigh,
N.C. 27611-7447. This certification and its conditions are final and binding unless you ask for a hearing.
North Carolina Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
919-733-1786 (phone), 919-733-6893 (fax), http://h2o.enr.state.nc.us/ncwetiands/
- i ayc c v? c
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 Mike Parker in our Raleigh Regional Office at 919-571-4700 or Todd St. John in this Office
at 919-733-9584.
S(incer?elly,
11l'? 4
Alan Klimek, P.E.
Attachments
cc: Raleigh DWQ Regional Office
Peter Jelenevsky, S&EC, 11010 Raven Ridge Road, Raleigh, NC 27560
Bob Zarzecki
Todd St. John
File
Central Files tsj

DWGUI -1
t 1 `C
Michael F. Easley
Governor
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
Certified Mail Return Receipt Requested
Town of Morrisville
100 Town Hall Drive PO Box 166
Morrisville, NC 27560
Dear Madame/Sir:
Jure 4. 2002
Re: Stream and Buffer Restoration
Morrisville Community Park
Wake County
DW Q # 020820
The Division of Water Quality has reviewed your submittal for a 401 Certification for the subject project. Your application
was not complete since only 3 copies of the stream restoration plans were provided (seven copies are required).
Additionally, a $475.00 fee is required since the project is proposed for compensatory stream mitigation credit. This
information is needed by DWQ in order for us to decide whether this project is approvable. Additionally, the following
information is necessary in order to determine whether or not compensatory mitigation credit can be awarded:
1) Please provide a cress section view of the rock vane and j-hook vane detail.
2) Please provide information regarding permanent protection (i.e. conservation easement, etc.) for the stream and
buffers that are proposed for compensatory mitigation credit.
3) Please provide an explanation regarding the values provided for average slope for the existing stream vs. the
proposed design. The values provided suggest a sinuosity of 1.5 yet the sinuosit;es for the existing and proposed
stream is 1.1 and 1.35 respectively.
4) more detail may be required regarding specifics for the monitoring plan.
Please call Mr. Todd St. John of this Office at [phone] if you have any questions. Until this information is received,
if wili place this project or, hold due to incomplete information (15A NCAC 2tH .0507(a)).
1 erel
ohn R. Domey
Jter Quality Cer if' ti n Program
cc: Raleigh DWQ Regional Office
Peter Je!enevsky, S&EC, 11010 Raven Ridge Road, Raleigh, NC 27580
Bob Zarzecki
Todd St. John
File
Central Files
North Carolina Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
919-733-1786 (phone), 919-733-6893 (fax), http://h2o.enr.state.nc.us,, tlands/
Environmental Consultants, PA
Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
Mr. Todd St. John
DWQ-Raleigh Regional Office
2321 Crabtree Blvd.
Raleigh, North Carolina 27604-2260
Re: Stream and Buffer Restoration Plan, Morrisville Community Park, DWQ #020820
As per the letter received from your office on June 4, 2002, I have addressed herein questions the
Division has regarding the mitigation plan and have modified the originally submitted plan
accordingly. Plan sheets that have been modified per the Division's request have been integrated
into the additionally required 4 copies and replacement sheets have been enclosed for the 3
originally submitted copies. Please replace these sheets with the enclosed copies. I have
addressed the issues in the order that they were presented in the letter below:
1) The cross sectional views of the rock vane and j-hook vane have been integrated into
Figure 6, so the original copy can be discarded and replaced with the enclosed copies.
2) A permanent deed restriction is currently being developed & finalized to ensure the
protection of the mitigation site in perpetuity and has also been addressed in the
Monitoring section of the revised mitigation plan in paragraph 10, page 7.
3) Question three related to the existing and proposed channel slopes as they correlate with
the valley slope and sinuosity. I recalculated all of the slope values and did not round the
numbers up. I corrected the slope value for the proposed restoration design for Reach 1
and 2 because originally I did not factor in the flood plain grading that would occur
during construction. As a result of the proposed grading, the flood plain slope value
de Therefore sinuosity
calculated utilizing the proposed slope values equals 1.33 for the proposed stream design
(Reach 1 and 2). Reach 3 currently exhibits a head-cut just upstream of the property line,
resulting in an incised reach within the property. Channel elevations located off of the
property were not utilized to determine stream slope. If the head-cut is utilized then the
existing stream slope becomes .008 and sinuosity calculated utilizing valley slope is less
then 1, which is impossible. Therefore direct measurement of the channel length versus
the valley length is the best way to determine sinuosity in this case. Direct measurement
results in a sinuosity of exactly 1.075. The Reference Reach and Design Summary Data
Sheet has been modified to reflect these changes, please replace the sheet in the original
plan copies already submitted with the copies enclosed.
Charlotte Office: Greensboro Office: Hickory Office:
\ PMB 291, 3020-I Prosperity Church Road 3817-E Lawndale Drive 910 Boston Road
Charlotte, NC 28269-7197 Greensboro, NC 27455 Taylorsville, NC 28681
Phone: [phone] Phone: [phone] Phone [phone]
Fax: [phone] Fax: [phone] Fax: [phone]
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4) The monitoring plan was modified and now addresses remediation and the deed
restriction.
If additional information is required to complete the review of this application, i can be reached at
919-846-5900 or e-mail [e-mail].
Sincerely,
Soil & Environmental Consultants, PA
??tkT:)fl 7"-*'
Peter A. Jele
Stream Restoration Specialist
Copy: Amanda Jones, USACE-Raleigh Regulatory Field Office
Enclosures: 1) (3) Revised Figure 6
2) (3) Revised Reference Reach and Design Summary Data Sheets
3) (3) Revised Monitoring Section of the Mitigation Plan
4) $475 Application Fee
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VIII. Monitoring Plan
The restoration site will be monitored for five consecutive years or until the required success
criteria has been met as determined by DWQ and the USACE. Monitoring activities will initiate
immediately following the completion of the stream construction, riparian buffer restoration and
plant installation during the following growing season summer of 2003. Parameters that will be
included in the long term monitored to ensure the success of the stream and buffer restoration will
include stream channel surveys (longitudinal and cross-sectional profiles), plant survival and
diversity inventories, and benthos sampling. Pre-determined photographic points will also be an
integral part of the monitoring reports.
Stream channel stability will be monitored by establishing permanent cross-sections
approximately every 500 feet that will comprise of a nested riffle and pool segment. Each cross-
section will be permanently positioned on the ground with capped rebar pins and located with
GPS technology. All of these cross-sectional surveys will also be utilized as photographic points.
The permanent cross-section monitoring points will be established immediately following
construction, and the "as-built" stream channel dimension, pattern, and profile will be surveyed
for the purpose of establishing a baseline for future comparison purposes. Following the "as-
built" survey, channel surveys will be completed following year 1, 3 and 5. Other stream channel
measurements that will be included in the monitoring report will include pebble counts, stream
pattern data and longitudinal profile data. Annual inspection of in-stream rock vane structures
will also occur to insure bed stability.
Vegetation within the restored riparian buffer will be monitored for five consecutive years.
Circular 0.1-acre plots will be permanently identified in the field with a rebar pin and cap and
located with GPS technology. Data gathered within each plot will include species, number of
each species present, and potential causes of mortality (i.e. browse, insect damage, disease,
drought, etc.). The primary focus of the vegetative monitoring will be solely on the tree and
shrub stratum, although herbaceous species encountered may also be recorded. The ultimate goal
is to have established a minimum of 320 native trees species per acre at the end of the 5-year
monitoring period.
In accordance with NC-DWQ procedure, stream benthic macroinvertebrates will be sampled prior
to channel construction and annually for three consecutive years, starting one year after channel
relocation. The initial benthos sample will occur during the last week of May 2002.
Due to the length and hydrologic order of the restored channel- reach, the full-scale investigation
for collecting stream invertebrates described in the NCDENR's Standard Operating Procedures
for Benthic Macroinvertebrates will be employed (NCDENR-DWQ 2001). All field samples will
be collected by certified individuals that participated in the Aquatic Insect Collection Protocols
Workshop presented by the 401 Certification Unit-Biological Assessment Unit in Spring 2001.
Three benthos sampling locations will be established as depicted on Figure 7. Station 1 will be
established approximately 200 feet upstream of the restoration reach, station 2 will be established
along a typical riffle-pool sequence within the subject restoration reach and station 3 will be
established immediately downstream of the restoration reach.
Once the restoration has been completed, the sample taken within the existing creek will be re-
established in approximately the same latitude as its prior location. Since the restoration plan
accounts for several channel meanders (and, thus, additional linear footage of channel), an
6
additional sample location may be established approximately 750-1000 ft. downstream of station
1.
All samples will be identified by certified labs, with the following information provided: list of all
taxa collected, list of EPT taxa, number of individuals per taxa, and the biotic indices for taxa in
North Carolina, as well as any additional information customarily provided. Results from the
surveys will be included within the annual monitoring report.
Following the submittal of the monitoring reports to the appropriate agency representatives, the
recipients of the report will be contacted for the purpose of discussing the monitoring data,
required success criteria and whether or not the site is functioning as expected. If the site is not
functioning as expected a site visit will be scheduled with the review agencies so that a
remediation plan can be created and implemented. The remediation plans, if required, will
directly reflect the requested alterations suggested by the regulatory agencies.
To ensure protection of the mitigation site in perpetuity a restrictive covenant will be applied to
the property deed. This restriction will protect the mitigation site as a stream and Neuse riparian
buffer mitigation site. The language that will appear on the deed will be as follows:
"The areas shown on the recorded Plat as mitigation areas shall be maintained in perpetuity in
their natural or mitigated condition. No person or entity shall fill, grade, excavate, or perform any
other land disturbing activities; nor cut, remove, or harm any native vegetation; nor construct any
structures not related to monitoring, nor allow animal grazing or watering or any other agricultural
use on such conservation area. This covenant is intended to ensure continued compliance with the
mitigation condition of authorizations issued by the United States of America, U.S. Army Corps of
Engineers, Wilmington District, and therefore may be enforced by the [State of North Carolina
and/or by] the United States of America. This covenant is to run with the land, and shall be
binding on the Owner, and all parties claiming under it."
XI. Federal and State Permits and Mitigation Requirements.
The Morrisville Community Park Mitigation Site is being utilized for the purpose of offsetting
proposed stream channel impacts, as required by the USACE, which will occur following the
completion of the proposed Crabtree Crossing Parkway. As a result of the preliminarily
calculated proposed impacts and a 2:1 mitigation ratio, the USACE is requiring the restoration of
approximately 510 linear feet of stream channel. In addition to the proposed stream impact,
approximately 1.2 acres of Neuse Riparian Buffer will be impacted. Applying the buffer
mitigation ratios approximately 2.9 acres of vegetated buffer will require restoration. All of these
mitigation requirements will be offset by the restoration activities proposed to be completed
within the Park property. Previous DWQ correspondence related to the proposed Crabtree
Crossing Parkway was identified as DWQ Project #01-1380 and NBRRO 01-182. Please note
that these total are approximations, existing site plans have not been finalized.
7
Applicable Nationwide Proposed Impact Mitigation Required Mitigation
Permit or Action ID No. Ratio
and DWQ Project No.
Nationwide 14 255 linear feet of 2:1 510 linear feet of stream
important stream restoration
Neuse Buffer Impact 33,206 Square Feet 3:1 2.3 acres Zone 1
of Zone 1
Neuse Buffer Impact 16,366 Square Feet 1.5:1 0.57 acres Zone 2
of Zone 2
Total Mitigation Requirements for the Proposed 510 linear feet of channel
Crabtree Crossing Parkway 2.9 acres of Riparian Buffer
Because there will be surplus of restoration credits related to stream and riparian buffer
restoration a Nationwide 27 has been applied for and is located in the PCN section of this
mitigation plan. As stated in the permit application the plan will institute the restoration of
approximately 3,100 linear feet of stream channel, this will be an increase of approximately 400
linear feet of perennial stream channel. Riparian buffer acreage will be approximately 4.46 acres
and 2.4 acres of Zone 1 and Zone 2, respectively. Remaining channel sections that are not
integrated into the restoration design will be backfilled with the material excavated from the
restored channel. When excavated volumes do not meet back-fill requirements, vernal pools will
be graded into the old channel segments and integrated into the mitigation site. These areas will
be surveyed and identified in the "as built" report.
X. References
Dunne, Thomas and L.B. Leopold. 1978. Water in Environmental Planning. W.H. Freeman and Company.
New York.
Gordon, N.D., T.A. McMahon, and B.L. Finlayson. 1992. Stream Hydrology. John Wiley & Sons Ltd.
West Sussex, England.
Harmon, W.A., G.D. Jennings, J.M. Patterson, D.R. Clinton, L.O. Slate, A.G. Jessup, J.R. Everhart, R.E.
Smith. 1999. Bankfull Hydraulic Geometry Relationships for North Carolina Streams.
http://www5.bae.ncsu.edu/programs/extension/Mg/sri/raral pied 1)al)er.html
North Carolina Division of Water Quality. 2002. Standard Operating Procedures for Benthic
Macrovinvertebrates North Carolina Department of Environment and Natural Resources, Raleigh,
North Carolina.
NC-DWQ. 1999. Basinwide Assessment Report: Cape Fear River Basin. NCDENR. Raleigh, North
Carolina.
Leopold, L.B., M.G. Wolman, and J.P. Miller. 1992. Fluvial Processes in Geomorphology. Dover
Publications, Inc. New York, NY.
Leopold, L.B., 1994. A View of the River. Harvard University Press, Cambridge, Massachusetts.
Rosgen, D.L. 1996. Applied River Morphology. Wildland Hydrology Books, Pagosa Springs, Colorado.
Rosgen, D.L. and Silvey, Lee. 1998. Field Guide for Stream Classification.
Rosgen, D.L. 2001. The Cross-Vane, W-Weir, and J-Hook Vane Structures... Their Description, Design
and Applications for Stream Stabilization and River Restoration. 2001 ASCE Conference
Proceedings. Reno, NV.
U.S. Army Corps of Engineers. 1987. Corps of Engineers Wetlands Delineation Manual. Department of
the Army. Waterways Experiment Station, Vicksburg, Mississippi.
United States Geological Survey. 1974. North Carolina Hydrologic Unit Map.
9
VIII. Monitoring Plan
The restoration site will be monitored for five consecutive years or until the required success
criteria has been met as determined by DWQ and the USACE. Monitoring activities will initiate
immediately following the completion of the stream construction, riparian buffer restoration and
plant installation during the following growing season summer of 2003. Parameters that will be
included in the long term monitored to ensure the success of the stream and buffer restoration will
include stream channel surveys (longitudinal and cross-sectional profiles), plant survival and
diversity inventories, and benthos sampling. Pre-determined photographic points will also be an
integral part of the monitoring reports.
Stream channel stability will be monitored by establishing permanent cross-sections
approximately every 500 feet that will comprise of a nested riffle and pool segment. Each cross-
section will be permanently positioned on the ground with capped rebar pins and located with
GPS technology. All of these cross-sectional surveys will also be utilized as photographic points.
The permanent cross-section monitoring points will be established immediately following
construction, and the "as-built" stream channel dimension, pattern, and profile will be surveyed
for the purpose of establishing a baseline for future comparison purposes. Following the "as-
built" survey, channel surveys will be completed following year 1, 3 and 5. Other stream channel
measurements that will be included in the monitoring report will include pebble counts, stream
pattern data and longitudinal profile data. Annual inspection of in-stream rock vane structures
will also occur to insure bed stability.
Vegetation within the restored riparian buffer will be monitored for five consecutive years.
Circular 0.1-acre plots will be permanently identified in the field with a rebar pin and cap and
located with GPS technology. Data gathered within each plot will include species, number of
each species present, and potential causes of mortality (i.e. browse, insect damage, disease,
drought, etc.). The primary focus of the vegetative monitoring will be solely on the tree and
shrub stratum, although herbaceous species encountered may also be recorded. The ultimate goal
is to have established a minimum of 320 native trees species per acre at the end of the 5-year
monitoring period.
In accordance with NC-DWQ procedure, stream benthic macroinvertebrates will be sampled prior
to channel construction and annually for three consecutive years, starting one year after channel
relocation. The initial benthos sample will occur during the last week of May 2002.
Due to the length and hydrologic order of the restored channel reach, the full-scale investigation
for collecting stream invertebrates described in the NCDENR's Standard Operating Procedures
for Benthic Macroinvertebrates will be employed (NCDENR-DWQ 2001). All field samples will
be collected by certified individuals that participated in the Aquatic Insect Collection Protocols
Workshop presented by the 401 Certification Unit-Biological Assessment Unit in Spring 2001.
Three benthos sampling locations will be established as depicted on Figure 7. Station 1 will be
established approximately 200 feet upstream of the restoration reach, station 2 will be established
along a typical riffle-pool sequence within the subject restoration reach and station 3 will be
established immediately downstream of the restoration reach.
Once the restoration has been completed, the sample taken within the existing creek will be re-
established in approximately the same latitude as its prior location. Since the restoration plan
accounts for several channel meanders (and, thus, additional linear footage of channel), an
6
additional sample location may be established approximately 750-1000 ft. downstream of station
1.
All samples will be identified by certified labs, with the following information provided: list of all
taxa collected, list of EPT taxa, number of individuals per taxa, and the biotic indices for taxa in
North Carolina, as well as any additional information customarily provided. Results from the
surveys will be included within the annual monitoring report.
Following the submittal of the monitoring reports to the appropriate agency representatives, the
recipients of the report will be contacted for the purpose of discussing the monitoring data,
required success criteria and whether or not the site is functioning as expected. If the site is not
functioning as expected a site visit will be scheduled with the review agencies so that a
remediation plan can be created and implemented. The remediation plans, if required, will
directly reflect the requested alterations suggested by the regulatory agencies.
To ensure protection of the mitigation site in perpetuity a restrictive covenant will be applied to
the property deed. This restriction will protect the mitigation site as a stream and Neuse riparian
buffer mitigation site. The language that will appear on the deed will be as follows:
"The areas shown on the recorded Plat as mitigation areas shall be maintained in perpetuity in
their natural or mitigated condition. No person or entity shall fill, grade, excavate, or perform any
other land disturbing activities; nor cut, remove, or harm any native vegetation; nor construct any
structures not related to monitoring, nor allow animal grazing or watering or any other agricultural
use on such conservation area. This covenant is intended to ensure continued compliance with the
mitigation condition of authorizations issued by the United States of America, U.S. Army Corps of
Engineers, Wilmington District, and therefore may be enforced by the [State of North Carolina
and/or by] the United States of America. This covenant is to run with the land, and shall be
binding on the Owner, and all parties claiming under it."
XI. Federal and State Permits and Mitigation Requirements.
The Morrisville Community Park Mitigation Site is being utilized for the purpose of offsetting
proposed stream channel impacts, as required by the USACE, which will occur following the
completion of the proposed Crabtree Crossing Parkway. As a result of the preliminarily
calculated proposed impacts and a 2:1 mitigation ratio, the USACE is requiring the restoration of
approximately 510 linear feet of stream channel. In addition to the proposed stream impact,
approximately 1.2 acres of Neuse Riparian Buffer will be impacted. Applying the buffer
mitigation ratios approximately 2.9 acres of vegetated buffer will require restoration. All of these
mitigation requirements will be offset by the restoration activities proposed to be completed
within the Park property. Previous DWQ correspondence related to the proposed Crabtree
Crossing Parkway was identified as DWQ Project #01-1380 and NBRRO 01-182. Please note
that these total are approximations, existing site plans have not been finalized.
7
Applicable Nationwide Proposed Impact Mitigation Required Mitigation
Permit or Action ID No. Ratio
and DWQ Project No.
Nationwide 14 255 linear feet of 2:1 510 linear feet of stream
important stream restoration
Neuse Buffer Impact 33,206 Square Feet 3:1 2.3 acres Zone 1
of Zone 1
Neuse Buffer Impact 16,366 Square Feet 1.5:1 0.57 acres Zone 2
of Zone 2
Total Mitigation Requirements for the Proposed 510 linear feet of channel
Crabtree Crossing Parkway 2.9 acres of Riparian Buffer
Because there will be surplus of restoration credits related to stream and riparian buffer
restoration a Nationwide 27 has been applied for and is located in the PCN section of this
mitigation plan. As stated in the permit application the plan will institute the restoration of
approximately 3,100 linear feet of stream channel, this will be an increase of approximately 400
linear feet of perennial stream channel. Riparian buffer acreage will be approximately 4.46 acres
and 2.4 acres of Zone 1 and Zone 2, respectively. Remaining channel sections that are not
integrated into the restoration design will be backfilled with the material excavated from the
restored channel. When excavated volumes do not meet back-fill requirements, vernal pools will
be graded into the old channel segments and integrated into the mitigation site. These areas will
be surveyed and identified in the "as built" report.
X. References
Dunne, Thomas and L.B. Leopold. 1978. Water in Environmental Planning. W.H. Freeman and Company.
New York.
Gordon, N.D., T.A. McMahon, and B.L. Finlayson. 1992. Stream Hydrology. John Wiley & Sons Ltd.
West Sussex, England.
Harmon, W.A., G.D. Jennings, J.M. Patterson, D.R. Clinton, L.O. Slate, A.G. Jessup, J.R. Everhart, R.E.
Smith. 1999. Bankfull Hydraulic Geometry Relationships for North Carolina Streams.
http://www5.bae.nesu.edu/programs/extension/Mwsri/rural pied paper.htrnl
North Carolina Division of Water Quality. 2002. Standard Operating Procedures for Benthic
Macrovinvertebrates North Carolina Department of Environment and Natural Resources, Raleigh,
North Carolina.
NC-DWQ. 1999. Basinwide Assessment Report: Cape Fear River Basin. NCDENR. Raleigh, North
Carolina.
Leopold, L.B., M.G. Wolman, and J.P. Miller. 1992. Fluvial Processes in Geomorphology. Dover
Publications, Inc. New York, NY.
Leopold, L.B., 1994. A View of the River. Harvard University Press, Cambridge, Massachusetts.
Rosgen, D.L. 1996. Applied River Morphology. Wildland Hydrology Books, Pagosa Springs, Colorado.
Rosgen, D.L. and Silvey, Lee. 1998. Field Guide for Stream Classification.
Rosgen, D.L. 2001. The Cross-Vane, W-Weir, and J-Hook Vane Structures... Their Description, Design
and Applications for Stream Stabilization and River Restoration. 2001 ASCE Conference
Proceedings. Reno, NV.
U.S. Army Corps of Engineers. 1987. Corps of Engineers Wetlands Delineation Manual. Department of
the Army. Waterways Experiment Station, Vicksburg, Mississippi.
United States Geological Survey. 1974. North Carolina Hydrologic Unit Map.
9

•
•
MORRISVILLE COMMUNITY PARK STREAM &

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Prepared By:

soil & jEriVironmental consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
RIPARIAN BUFFER MITIGATION PLAN
I. Introduction
The Town of Morrisville proposes the restoration of approximately 3,100 linear feet of stream
channel and approximately 6.5 acres riparian buffer for the purpose of providing compensatory
mitigation for unavoidable stream and Neuse riparian buffer impacts associated with its
development projects. The mitigation credits generated within the Morrisville Community Park
will be utilized to compensate for stream and Neuse riparian buffer impacts specifically related to
the proposed Crabtree Crossing Parkway - Town of Morrisville (DWQ project # 01-1380).
Submittal of the Pre-Construction Notification for the proposed Crabtree Crossing Parkway will
occur in approximately two to three weeks. The remaining stream and buffer restoration credit
yields will be utilized to offset future unavoidable impacts proposed and funded by the Town of
Morrisville.
The proposed mitigation project will be completed within the confines of the approximate 32-acre
Morrisville Community Park located approximately 400 feet east of Davis Drive (SR 1613),
which, is accessible from Morrisville Parkway located south of the Park entrance. The project is
located in Morrisville, Wake County, North Carolina (Figure 1). This site is located within the
Neuse River Basin, USGS Hydrologic Unit Code 0302020 land subbasin 030402 (USGS 1974
and DENR 1999).
The mitigation site is located in t -rassic Basin of the Piedmont Physiographic regi of North
Carolina. The restoration con ' o oca y i en i ie stream c a s Grove
Tributary and an unnamed tributary of Hatchet's Grove which flows into the Park property from
the northwest. The tributary of Hatchet's Grove that flows into the site from the northwest will
from this point on will be referred to as the Northeast Tributary. Neither the Wake County Soil
Survey nor the USGS Quadrangle formally identifies either of these tributaries of Crabtree Creek.
Hatchet's Grove Tributary flows into Crabtree Creek (Stream Index Number 27-33-(1))
approximately 3,600 feet east of the project site. The current State classification of the streams
are Class C NSW waters (DENR 1992). Based on the most recent USGS quadrangle the subject
channels are classified as 2"d and 3'd order streams.
The surrounding landscape topography is characterized as hilly, with side slopes that are
generally steep to moderately sloping. The site topography is relatively flat adjacent to the stream
channels; vertical fall from the project origin to the terminus is approximately 9 feet resulting in a
valley slope of 0.0045 based on the 1-foot topographic map completed by Withers & Ravenel,
(Figure 2). This wide, gently sloping, well-defined alluvial floodplain is a Valley Type VIII as
defined in Applied River Morphology (Rosgen 1996).
The mitigation project objectives include: 1) the restoration of the existing slightly incised,
straightened, and eroding channel, by utilizing natural channel design to create a stable, self-
maintaining stream that will not aggrade nor degrade (Priority 1 Stream Restoration). 2) Insure
channel and stream bank stabilization by utilizing grade control structures, root wads, and native
vegetation (on-site transplants, live stakes, and bare roots), in conjunction with the eradication or
modification of current land use practices (grounds maintenance). 3) Improve and create bed
form diversity (riffles, runs, pools, and glides). 4) Re-establish the historic active floodplain
functionality and hydrology by constructing the new channel within the historic floodplain area,
matching the bankfull elevation with the current flood plain elevation. 5) Re-establish a native
forested riparian plant community and remove invasive exotic species that currently exist within
the restoration corridor. 6) Create a diverse terrestrial and aquatic wildlife habitat area. 7)
Integrate existing and proposed park uses (greenway trail) with the proposed restoration plan
providing aesthetic and educational values.
Preliminary proposed impacts and subsequent mitigation ratios set by the U.S. Army Corps of
Engineers (USACE) and the N.C. Division of Water Quality (DWQ) are described and calculated
in Section XI. Also the excess mitigation credits that will be utilized for future Town projects are
also provided in Section XI.
In addition to the proposed mitigation work to be performed within the Park, a greenway trail has
been integrated into the restoration design. Two 50-foot span pedestrian bridges will cross the
channel at station 6+12 and 22+20, perpendicular to channel flow and the restored riparian buffer.
Installation of the bridges will occur following the completion of the restoration activities.
Because a more natural channel pattern will be restored on site the riparian buffer will be
extremely exaggerated especially when compared to the existing buffer footprint. This has
resulted in a constriction along the northern property line. As a result of this constriction the
greenway path is proposed to be located in portions of the relocated Zone 2. The buffer areas
have been located within the proposed greenway trail has excluded from the buffer restoration
acreage. Since the bridged greenway crossings and will be less than 25 wide within the restored
buffer, we believe that it should be considered an exempt activity.
II. Existing Site Conditions
The mitigation site is currently being utilized to accommodate several public recreational uses for
the Town of Morrisville. Facilities currently available within the Park include playground
equipment, picnic shelters, soccer fields, baseball fields, restroom facilities and parking. The
current master plan includes the addition of two baseball fields, a concession/restroom/meeting
house, greenway trail, and additional parking facilities.
Historically, the site was previously utilized for the production of agricultural products (row
crops), probably since the mid 1800's, as a result the natural plant communities, topography, and
hydrologic conditions have been modified or obliterated. All of the available historical aerial
photography of the proposed mitigation site available from the Wake County Natural Resources
Conservation Service (NRCS) was located and examined. Based on aerial interpretation, the
photographs indicate that the majority of the site was utilized for crop production from 1949 until
the early 1990's. It also appears that the stream channels located on the site were periodically
maintained (cleared of bank vegetation and dredged). In the early 1990's to present day
agricultural activities where slowly replaced with other uses directly related to the park. The
surrounding land use was also converted from primarily agricultural to commercial and
residential. This land use conversion within the drainage basin has resulted in an estimated
impervious cover of approximately 35-40%. The current aerial photograph is depicted on Figure
3.
Based on the field reconnaissance no wetland areas were observed within the proposed mitigation
corridor. Waters of the U. S. were limited to the stream channel only. In the vicinity of the
confluence of the Northwest Tributary and Hatchet's Grove, there is an area of hydric soils
(approximately 1.5 acres in size). This area has been mapped as the Chewacla soils unit in the
Wake County Soil Survey, and supports a vegetated community of mixed wetland, upland, and
facultative species including Juncus spp., Asclepias spp., Rubus spp., and Eupatorium
leptophyllum. The area was determined to be non jurisdictional by the Army Corps of Engineers
(Raleigh Regulatory Office) at a site meeting conducted 21 May 2002, due to lack of wetland
hydrology. Historically, this area was utilized for crop production as observed on aerial
photographs observed at the NRCS office in Raleigh. The channelized and dredged streams that
are located adjacent to the boundaries of the hydric soil area have apparently lowered the
2
groundwater table sufficiently enough to reduce the hydro-period allowing upland species
colonization.
III. Existing Channel and Riparian Buffer Conditions
For the purpose of the restoration design, the existing stream channels have been divided into
three separate reaches based on drainage area. Hatchet's Grove Tributary will be identified as
Reach 1 and 2. Reach 1 originates at the western property boundary and terminates at the
confluence with the Northwest Tributary and Reach 2 originates at the confluence and terminates
at the first sanitary sewer line crossing located approximately 200 feet west of the eastern
property boundary. The Northwest Tributary will be designated Reach 3 and originates at the
northwest property corner and continues until it joins Hatchet's Grove. Current channel lengths
include all three reaches are approximately 2,700 linear feet and the existing sinuosity is 1.1.
Based on the observed conditions and existing stream survey data, the channel was apparently
dredged and channelized to maximize productive cropland and increase drainage of the site.
Current degraded channel conditions are predominately attributed to the increase in stormwater
runoff compounded by the continual park maintenance practices occurring along the stream
banks. Although percent of vegetative cover has increased within the Park since farming
activities have ceased, the increased stormwater directed to the historically altered creek has
resulted in a high rate of scour, bank erosion, sediment load, and turbidity. A photographic log of
the existing stream channel has been enclosed in the appendix. As a result of the straightening
and incision of the historic stream channel, higher boundary shear stresses have perpetuated the
existence of an unstable bed and bank. The channel adjustments, due to these conditions and
increased slope related to the straightening of the channel include lateral channel extension,
slumping, bank erosion, and bed instability. Following the completion of the pebble counts, bar
sample and entrainment calculation (See the Appendix), it was determined that the channel bed is
actively degrading due to an increased discharge rate within an incised, partially denuded stream
channel. The increased discharge rate results in a higher shear stress which perpetuates channel
degradation (headcutting), and widening (lateral expansion).
Average existing channel parameters such as cross-sectional area, bankfull width, depth, etc. are
provide within the Design Summary section of the Appendix, so that it can be compared to
reference channel data and the proposed channel design for all three reaches.
Vegetation observed immediately adjacent to the project stream consists of a mixture of native
and exotic plant species. The majority of the southern portion of the riparian buffer adjacent to
Hatchet's Grove and Northwest Tributaries is frequently maintained grassed areas utilized for
ongoing Park activities (soccer, baseball, etc.). The riparian zone located to the north of
Hatchet's Grove east of the confluence is sporadically vegetated (<100 trees/acre) with native tree
species and an extremely dense shrub layer. The dominate species located within the restoration
corridor consist of black willow (Salix nigra), other species included red maple (Acer rubrum),
sweetgum (Liquidambar styraciflua), green ash (Fraxinus pennsylvanica), and loblolly pine
(Pinus taeda). The dense shrub layer consist primarily of blackberry (Rubus spp.), privet
(Ligustrum sinese) and to a lesser degree saplings of the canopy species. Other species located
within the riparian buffer but located primarily along the stream banks include tag alder (Alnus
serrulata), elderberry (Sambucus canadensis), and silky dogwood (Cornus amomum).
Microstegium (Eulalia vimnea), Japanese honeysuckle (Lonicera japonica), fescue (Festuca spp.)
and sparse areas of Carex spp. And Juncus spp. occupies the herb layer. Honeysuckle is a
particularly dominate invasive located within the riparian buffer.
IV. Bankfull Stage Verification
Determining the bankfull indicators during the field surveys was fairly difficult. Grounds
maintenance activities, active bank erosion, slumping, and past dredging activities have obscured
typical bankfull indicators. Indicators that were utilized included wrack lines, scour lines,
vegetation positions, and depositional features. The cross-sectional areas were then compared to
the North Carolina Rural Piedmont Regional Curve (SRI 2000) as presented in Figure 3. The
plotted Hatchet's Grove and Northwest Tributary data was not utilized to determine the
regression line.
V. Natural Channel Design
The restoration design for the Hatchet's Grove and Northwest Tributary is based on natural
channel design principles and techniques utilizing local reference reach data sets and the existing
channel conditions survey. Reference data utilized to develop the restoration design for the
stream channel included the North Carolina Rural Piedmont Regional Curve (SRI 2000), Sal's
Branch reference reach survey data (Doll and Jelenevsky June 2001 and Clinton et. al. 1998).
The design parameters, proposed cross sectional dimension, and pertinent data are provided in
Design Summary section of the Appendix.
The proposed stream design will restore a naturally meandering E/C type stream channel to a
more appropriate location-centrally within the existing flood plain as depicted in Figure 5. The
restoration design will result in a riffle-pool profile that will be reinforced utilizing instream
structures such as rock cross-vanes, J-hook vanes and root wads as depicted in Figure 6 (Rosgen
2001). These structures will be subsequently vegetated with transplants and live stakes. Rock
vanes will be installed at the head of every glide/riffle interface and root wads will be installed at
every outside meander bend as determined by the designer during the construction phase to
ensure stabilization of the stream channel grade and banks. Erosion control matting, temporary
seeding, and live stakes will be utilized to reduce bank erosion immediately following completion
of each section of channel and provide bank stabilization.
The resulting restored stream channel will be approximately 3,100 linear feet, increasing the
overall channel length by approximately 400 linear feet. This design is distinguished as a Priority
I stream restoration.
VI. Sediment Transport Analysis
A stable stream channel contains the capacity to transport its sediment load without aggrading or
degrading. Utilizing pebble count data, bar sample data, water slope values, and critical
dimensionless shear stress, the required mean depth to move the d84 particle was determined.
The largest particle located in the bar sample was utilized for the d84, which in this case was 18
mm. The entrainment calculation resulted in a bankfull mean depth requirement of at least 0.62
feet at a bankfull slope of .004. Based on this calculation, the design for the restored channel
with a mean depth of 2.5 feet and average slope of .003 will be able to move its current sediment
load and should not aggrade. Because the current channel is degrading, the installation of grade
control structures will be required to prevent future degradation. The pebble count data, bar
sample, and entrainment calculations are located in Pebble Count Data section of the Appendix.
4
VII. Planting Plan
The majority of the riparian buffer will be planted with bare root seedlings consisting of
bottomland hardwood species. Native trees and shrubs that are currently located within the
channel clearing and excavation limits will be removed with as much of the root ball intact and
transplanted adjacent to the restored creek channel or within riparian buffer. Trees as large as 4-
inches DBH and approximate 20 feet tall will be transplanted and integrated into the buffer
restoration planting plan. Immediately following the completion of the stream channel, the bare
root seedlings will be planted during the fall season. During the following fall, supplemental
shrub and tree species will be planted if survival rates of previously planted seedlings are below
target densities. Plant species that will be utilized within the restoration site are listed in the table
below.
The restored stream channel will be planted with the appropriate channel bank species in the form
of live stakes, bare-root seedlings, and transplants. The live stakes will be harvested primarily
from on-site and will consist primarily of black willow (Salix nigra), silky dogwood (Corpus
amomum), and elderberry (Sambucus canadensis). If quantities from on site are not plentiful the
live stakes will be supplemented by locally identified plant sources (i.e. existing power line
ROWs, adjacent properties, etc.). Black willow will not consist of more than 30 percent of the
stream bank plantings.
The planting plan consists of individual hardwood tree species as listed below. The
majority of the riparian buffer restoration (60%) will consist of green ash, American
sycamore, swamp chestnut oak and river birch replicating existing site and upstream
riparian plant communities. The goal is to plant approximately 450 bare-root seedlings
per acre, with an approximate 10-foot by 10-foot spacing.
Riparian Buffer Restoration Plant List
Scientific Name Common Name
Trees
Fraxinus pennsylvanica** Green ash
Platanus occidentalis** American sycamore
Quercus michauxii** Swamp chestnut oak
Betula nigra ** River birch
Quercus lyrata Overcup oak
Quercus laurifolia** Laurel oak
Quercus nigra** Water oak
Liriodendron tulipifera** Tulip tree
Nyssa sylvatica** Black gum
Small Trees and Shrubs
Cornus amomum Silky dogwood
Salix nigra Black willow
Carpinus carolinana Ironwood
Cephalanthus occidentalis Button-bush
Sambucus canadensis Elderberry
Itea virginica Virginia Willow
5
VIII. Monitoring Plan
The restoration site will be monitored for five consecutive years or until the required success
criteria has been met as determined by DWQ and the USACE. Monitoring activities will initiate
immediately following the completion of the stream construction, riparian buffer restoration and
plant installation during the following growing season summer of 2003. Parameters that will be
included in the long term monitored to ensure the success of the stream and buffer restoration will
include stream channel surveys (longitudinal and cross-sectional profiles), plant survival and
diversity inventories, and benthos sampling. Pre-determined photographic points will also be an
integral part of the monitoring reports.
Stream channel stability will be monitored by establishing permanent cross-sections
approximately every 500 feet that will comprise of a nested riffle and pool segment. Each cross-
section will be permanently positioned on the ground with capped rebar pins and located with
GPS technology. All of these cross-sectional surveys will also be utilized as photographic points.
The permanent cross-section monitoring points will be established immediately following
construction, and the "as-built" stream channel dimension, pattern, and profile will be surveyed
for the purpose of establishing a baseline for future comparison purposes. Following the "as-
built" survey, channel surveys will be completed following year 1, 3 and 5. Other stream channel
measurements that will be included in the monitoring report will include pebble counts, stream
pattern data and longitudinal profile data. Annual inspection of in-stream rock vane structures
will also occur to insure bed stability.
Vegetation within the restored riparian buffer will be monitored for five consecutive years.
Circular 0.1-acre plots will be permanently identified in the field with a rebar pin and cap and
located with GPS technology. Data gathered within each plot will include species, number of
each species present, and potential causes of mortality (i.e. browse, insect damage, disease,
drought, etc.). The primary focus of the vegetative monitoring will be solely on the tree and
shrub stratum, although herbaceous species encountered may also be recorded. The ultimate goal
is to have established a minimum of 320 native trees species per acre at the end of the 5-year
monitoring period.
In accordance with NC-DWQ procedure, stream benthic macroinvertebrates will be sampled prior
to channel construction and annually for three consecutive years, starting one year after channel
relocation. The initial benthos sample will occur during the last week of May 2002.
Due to the length and hydrologic order of the restored channel reach, the full-scale investigation
for collecting stream invertebrates described in the NCDENR's Standard Operating Procedures
for Benthic Macroinvertebrates will be employed (NCDENR-DWQ 2001). All field samples will
be collected by certified individuals that participated in the Aquatic Insect Collection Protocols
Workshop presented by the 401 Certification Unit-Biological Assessment Unit in Spring 2001.
Three benthos sampling locations will be established as depicted on Figure 7. Station 1 will be
established approximately 200 feet upstream of the restoration reach, station 2 will be established
along a typical riffle-pool sequence within the subject restoration reach and station 3 will be
established immediately downstream of the restoration reach.
Once the restoration has been completed, the sample taken within the existing creek will be re-
established in approximately the same latitude as its prior location. Since the restoration plan
accounts for several channel meanders (and, thus, additional linear footage of channel), an
6
additional sample location may be established approximately 750-1000 ft. downstream of station
1.
All samples will be identified by certified labs, with the following information provided: list of all
taxa collected, list of EPT taxa, number of individuals per taxa, and the biotic indices for taxa in
North Carolina, as well as any additional information customarily provided. Results from the
surveys will be included within the annual monitoring report.
Following the submittal of the monitoring reports to the appropriate agency representatives, the
recipients of the report will be contacted for the purpose of discussing the monitoring data,
required success criteria and whether or not the site is functioning as expected. If the site is not
functioning as expected a site visit will be scheduled with the review agencies so that a
remediation plan can be created and implemented. The remediation plans, if required, will
directly reflect the requested alterations suggested by the regulatory agencies.
To ensure protection of the mitigation site in perpetuity a restrictive covenant will be applied to
the property deed. This restriction will protect the mitigation site as a stream and Neuse riparian
buffer mitigation site. The language that will appear on the deed will be as follows:
"The areas shown on the recorded Plat as mitigation areas shall be maintained in perpetuity in
their natural or mitigated condition. No person or entity shall fill, grade, excavate, or perform any
other land disturbing activities; nor cut, remove, or harm any native vegetation; nor construct any
structures not related to monitoring, nor allow animal grazing or watering or any other agricultural
use on such conservation area. This covenant is intended to ensure continued compliance with the
mitigation condition of authorizations issued by the United States of America, U.S. Army Corps of
Engineers, Wilmington District, and therefore may be enforced by the [State of North Carolina
and/or by] the United States of America. This covenant is to run with the land, and shall be
binding on the Owner, and all parties claiming under it."
XI. Federal and State Permits and Mitigation Requirements.
The Morrisville Community Park Mitigation Site is being utilized for the purpose of offsetting
proposed stream channel impacts, as required by the USACE, which will occur following the
completion of the proposed Crabtree Crossing Parkway. As a result of the preliminarily
calculated proposed impacts and a 2:1 mitigation ratio, the USACE is requiring the restoration of
approximately 510 linear feet of stream channel. In addition to the proposed stream impact,
approximately 1.2 acres of Neuse Riparian Buffer will be impacted. Applying the buffer
mitigation ratios approximately 2.9 acres of vegetated buffer will require restoration. All of these
mitigation requirements will be offset by the restoration activities proposed to be completed
within the Park property. Previous DWQ correspondence related to the proposed Crabtree
Crossing Parkway was identified as DWQ Project #01-1380 and NBRRO 01-182. Please note
that these total are approximations, existing site plans have not been finalized.
7
Applicable Nationwide Proposed Impact Mitigation Required Mitigation
Permit or Action ID No. Ratio
and DWQ Project No.
Nationwide 14 255 linear feet of 2:1 510 linear feet of stream
important stream restoration
Neuse Buffer Impact 33,206 Square Feet 3:1 2.3 acres Zone 1
of Zone 1
Neuse Buffer Impact 16,366 Square Feet 1.5:1 0.57 acres Zone 2
of Zone 2
Total Mitigation Requirements for the Proposed 510 linear feet of channel
Crabtree Crossing Parkway 2.9 acres of Riparian Buffer
Because there will be surplus of restoration credits related to stream and riparian buffer
restoration a Nationwide 27 has been applied for and is located in the PCN section of this
mitigation plan. As stated in the permit application the plan will institute the restoration of
approximately 3,100 linear feet of stream channel, this will be an increase of approximately 400
linear feet of perennial stream channel. Riparian buffer acreage will be approximately 4.46 acres
and 2.4 acres of Zone 1 and Zone 2, respectively. Remaining channel sections that are not
integrated into the restoration design will be backfilled with the material excavated from the
restored channel. When excavated volumes do not meet back-fill requirements, vernal pools will
be graded into the old channel segments and integrated into the mitigation site. These areas will
be surveyed and identified in the "as built" report.
X. References
Dunne, Thomas and L.B. Leopold. 1978. Water in Environmental Planning. W.H. Freeman and Company.
New York.
Gordon, N.D., T.A. McMahon, and B.L. Finlayson. 1992. Stream Hydrology. John Wiley & Sons Ltd.
West Sussex, England.
Harmon, W.A., G.D. Jennings, J.M. Patterson, D.R. Clinton, L.O. Slate, A.G. Jessup, J.R. Everhart, R.E.
Smith. 1999. Bankfull Hydraulic Geometry Relationships for North Carolina Streams.
http://www5.bae.ncsu.edlgprograms/extension/wgg/sri/rural pied paper.html
North Carolina Division of Water Quality. 2002. Standard Operating Procedures for Benthic
Macrovinvertebrates North Carolina Department of Environment and Natural Resources, Raleigh,
North Carolina.
NC-DWQ. 1999. Basinwide Assessment Report: Cape Fear River Basin. NCDENR. Raleigh, North
Carolina.
Leopold, L.B., M.G. Wolman, and J.P. Miller. 1992. Fluvial Processes in Geomorphology. Dover
Publications, Inc. New York, NY.
Leopold, L.B., 1994. A View of the River. Harvard University Press, Cambridge, Massachusetts.
Rosgen, D.L. 1996. Applied River Morphology. Wildland Hydrology Books, Pagosa Springs, Colorado.
Rosgen, D.L. and Silvey, Lee. 1998. Field Guide for Stream Classification.
Rosgen, D.L. 2001. The Cross-Vane, W-Weir, and J-Hook Vane Structures... Their Description, Design
and Applications for Stream Stabilization and River Restoration. 2001 ASCE Conference
Proceedings. Reno, NV.
U.S. Army Corps of Engineers. 1987. Corps of Engineers Wetlands Delineation Manual. Department of
the Army. Waterways Experiment Station, Vicksburg, Mississippi.
United States Geological Survey. 1974. North Carolina Hydrologic Unit Map.
9

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Pi PROJECT NAnME: , ITHERS & RAVENEL Soil & Environmental Consultants, PA
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MM SECFI1 E!,\6798 RESTOR4TION 11010 Raven Ridge Road Raleigh, Noah Carolina 27614 Phone: [phone] Fax: (919) R46-9467
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CD
d?
(Station 1+28) Riffle Northwest Tributary to Hatchet Grove Creek
308
307
306
305
c
0 4,
304
w 303
302
301
300
0 10 20 30 40
Width from River Left to Right (ft)
50 60
section:
Riffle
Northwest Tributary to Hatchet Grove Creek
Neuse River Basin
height of instrument (ft): 11EI&ETA
FS FS F;
omit distance
I
notes Pt. (ft) (ft) elevation bankfull top of
304.57
304.75
301.64
302.73
304.29
304.94
„n'
dimensions
18.1 x-section area 1.9 d mean
9.5 width 12.2 wet P
3.0 d max 1.5 h yd radi
3.7 bank ht 4.9 w/d ratio
150.0 W flood prone area 15.8 ent ratio
c ec from channel matena
3 measured D84 mm
196.4 relative roughness 15.9 fric. factor
0.018 Mannin 's n from channel material
(Station 1+21) Pool Northwest Tributary to Hatchet Grove Creek
306
305
ii?. 304
c
303
m
m
W 302
301
300+
0
10 20 30 40
Width from River Left to Right (ft)
50 60
70
Pool
Northwest Tributary to Hatchet Grove Creek
Neuse River Basin
description: ' • • - •
heiaht of instrument (ft):
notes
elevation
305.15
305.04
305.08
305.11
303.1
301.47
301.38
300.73
301.42
304.4
304.82
305.18
304.75
bankfull Itop of
dimensions
23.5 x-section area 2.6 d mean
9.2 width 12.3 wet P
3.6 d max 1.9 h yd radi
4.8 bank ht 3.6 wId ratio
0.0 W flaacE roue area On ent ratio
Elevation (ft)
07 co 0O N .P O co
O
O
O
N
O
0
w
0
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0
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0
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• • •
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306
305
304
303
302
c
= 301
is
300
w
299
298
297
296
(Station 1+47) Pool Hatchet Grove Creek
0 5 10 15 20 25 30 35
Width from River Left to Right (ft)
section:
Pool
• Hatchet Grove Creek
Nejse River Basin
description: - -
height of instrument (ft):
nc'ei
J
elevation
303.53
303.84
304.43
304.19
303.66
303.06
301.97
298.63
297.17
297.34
297.93
298.64
298.89
300.6
302.66
304.07
304.66
bankfull top of ba
303.664 304.19
40 45 50
4M
dimensions
65.8 x-section area 3.9 d mean
17.0 width 23.5 wet P
6.5 d max 2.8 h yd radi
7.0 bank ht

hydraulics

0.70 shears tress ((Ibs/ft s q)
0.60 shear velocity (ft/sec)

44.4 threshold grain size (mm)
•
(Station 2+31) Riffle Hatchet Grove Creek
307
306
305
S304
c
°- 303
m
w 302
301 ------------ ---------
300 --- - - ---
299
0 5 10 15 20 25
Width from River Left to Right (ft)
section: % ??
Riffle
Hatchet Grove Creek
Neuse River Basin
• II caesui iNi
height of instrument
nctes P' ft) elevation

.. 303.4
.
303.45
? 303.31
? d 303.08
= 302.61
301.76
? 300.82
? 300.26
?} 299.73
? 299.94
rt
? . ' ^ 300.07
300.18
300.26
300.03
300.12
300.95
302.13
303.3
303.83
303.8
bankfull top of bai
hex:
303.08 303.45
30 35
„n„
dimensions
35.9 x-section area 2.3 d mean
15.7 width 18.2 wet P
3.3 d max 2.0 h yd radi
3.7 bank ht 6.9 w/d ratio
100.0 W flood prone area 6.4 lent ratio
hydraulics
4.5 velocity ft/sec
161.2 discharge rate, Q cfs
0.49 shear stress Ibs/ft s)
0.50 shear velocity ft/sec)
2.560 unit stream power (lbs/fUsec)
0.27 Froude number
8.9 friction factor u/u*
30.2 threshold rain size (mm)
check from channel material
13 measured D84 mm
53.6 relative roughness 12.7 fric. factor
0.023 Manning's n from channel material
I•
(Station 14+40) Riffle Hatchet Grove Creek
0
0 5 10 15 20 25 30 35 40 45 50
Width from River Left to Right (ft)
304
303
302
301
300
c
°- 299
• m
298
W
297
296
295
294
section: e,='
Riffle
Hatchet Grove Creek
Neuse River Basin
?,?
description:
heiqht of instrument (ft):
notes
299.02
299.17
299.08
299.13
298.8
297.61
296.08
295.49
295.62
295.37
295.1
294.92
295.44
296.21
297.3
298.44
298.91
299.19
FS FS W
bankfull top of bank
? NUAMORK
298.91 299.13
'In"
dimensions
44.4 x-section area 2.5 d mean
17.8 width 20.3 wet P
4.0 d max 2.2 h yd radi
4.2 bank ht 7.1 w/d ratio
300.0 W flood prone area 16.9 l ent ratio
hydraulics
4.8 velocity (ft/sec
213.2 discharge rate, Q (cfs)
0.55 shear stress Ibs/ft s q)
0.53 shear velocity ft/sec
2.990 unit stream power (lbs/ft/sec)
0.29 Froude number i
9.0 friction factor u/u*
33.8 threshold grain size (mm)
check from channel material
13 measured D84 (mm)
58.6 relative roughness 12.9 fric. factor
0.023 Mannin 's n from channel material
elevation
u
s
(Station 15+23) Pool Hatchet Grove Creek
i0
301
300 -- - -- - -
299
298 -- --- --
c
297 --
w 296
295 -
I
294 -- - ------ --
293
0 10 20 30 40 50
Width from River Left to Right (ft)
section:
Pool
Hatchet Grove Creek
Neuse River Basin
description:`.
height of instrument (ft):
omit distance FS FS FS channel
notes pt (ft) (ft) elevation bankfull top of bank slope (%)
300.23 _ o
r-: inn 299.2 299.67

u
299.67
299.18
298.28
297.59
294.98
294.15
294.32
294.85
295.37
295.97
296.87
298.61
299.2
298.69
298.85
298.86
60
dimensions
48.4 x-section area 2.0 d mean
24.3 width 29.1 wet P
5.3 d max 1.7 h yd radi
5.8 bank ht

hydraulics

0.42 shear stress Ibs/ft s q)
0.46 shear velocity ft/sec

25.0 threshold grain size (mm)

0
(Station 19+91) Pool Hatchet Grove Creek
298
297
296 - --
295 - --
c
•-° 294
C
U 293
292
291 - -
290
0 10 20 30 40
Width from River Left to Right (ft)
section:
Pool
Hatchet Grove Creek
Neuse River Basin
of instrument
cotes (f:) ! ;ft) elevation
297.16
:i 296.54
296.78
297.2
293.84
_ 293.31
292.09
290.93
291.51
j J 292.04
292.74
293.15
293.31
294.43
295.59
295.57
294.86

#. 295.9

LL
L 297.06
- _
bankfull top of
295.59 29
50
60 70
dimensions
55.3 x-section area 1.5 d mean
37.6 width 41.3 wet P
4.7 d max 1.3 h yd radi
6.3 bank ht

0.33 shear stress Ibs/ft s q)
0.42 shear velocity ft/sec)

19.6 threshold qrain size (mm)
•
(Station 22+08) Riffle Hatchet Grove Creek
0
300
299
298
297
Z
296
m
U- 295
294
293
292
10 20 30 40 50
Width from River Left to Right (ft)
section:
Riffle
Hatchet Grove Creek
Neuse River Basin
•
notes

of instrument
elevation
295
294.89
293.49
293.03
292.81
292.69
292.95
293.02
293.24
292.97
294.07
294.95
295.34
295.85
296.25
bankfull top of bai
295.79 295.85
W
„n„
60
dimensions
51.7 x-section area 1.3 d mean
40.3 width 41.9 wet P
3.1 d max 1.2 h yd radi
3.2 bank ht 31.4 w/d ratio
300.0 W flood prone area 7.j __ Lent ratio
check from channel material
13 measured D84 mm
30.1 relative roughness 11.3 fric. factor
0.024 Mannin 's n from channel material
N
W
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O
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N
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Stream: Hatchet's Grove Tributary, Morrisville, North Carolina
Date: 18 April 2002
Crew: Peter Jelenevsky
Entrainment Calculation
Critical Dimensionless Shear Stress:
Tci = 0.0834(d50/ds50)-0.872
Value Variable Definition
6.3 d50 (mm) D50 Bed Material (D50 from riffle pebble count)
1.6 ds50 (mm) Bar Sample D50 or Sub-pavement D50
0.02545 1 ici
I 1 Critical Dimensionless Shear Stress
Bankfull Mean Depth Required for Entrainment of Largest Particle in Bar Sample:
d = (,cci*1.65*Di)/S
1.65=submerged specific weight of sediment
Value Variable Definition
0.02545 ici Critical Dimensionless Shear Stress
0.0590 Di (feet) Largest particle from the Bar Sample
0.0040 S (ft/ft) Bankfull Water Surface Slope (Average Channel Slope)
0.62 d(ft) Bankfull Mean Depth Required
2.5 De(ft) Existing Bankfull Mean Depth (from riffle cross section)
Circle: Stable (de/d=1) Aggrading (de/d<l) Degrading'(deld>1
Sediment Transport Validation
18 Largest Particle in Bar Sample Di (mm)
0.474 Bankfull Shear Stress 1;c= yRS (lb/ft2)
30mm Moveable particle size (mm) at bankfull shear stress (predicted by the Shields
Diagram: Red field book: p190)
0.3 Predicted shear stress required to initiate movement of Di (mm) (see Shields
Diagram: Red field book: p190)
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REACH 1,2,3 CROSS-SECTIONS
TYPICAL RIFFLE VERSUS POOL
1.0
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BANKFULL WIDTH 18 FEET
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DRARaGE
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MATCH EXISTING
/ FLOODPLAIN ELEVATION HATCHET'S GROVE REACH 2
// li BANKFULL WIDTH 20 FEET ?I
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RIFFLE MAX DEPTH
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AVE. DEPTH 2.5 FT
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Figure 4 - Northwest tributary near station 6+89 - Facing east with Hatchet's
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Figure 5 - Hatchet's Grove near station 12+00.
0 Figure 6 - Hatchet's Grove near station 13+50: Old bridge crossing.

Figure 7 - Hatchet's Grove near station 18+00.

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54?1)
0
W AFB
Pre-Construction Notification (PCN) Application Form
?G
For Section 404 and/or Section 10 Nationwide, Regional and General Permits, Section 401
General Water Quality Certifications, and Riparian Buffer and Watershed Buffer Rules
This form is to be used for projects qualifying for any of the U.S. Army Corps of Engineers' (USACE)
Nationwide, Regional or General Permits as required by Section 404 of the Clean Water Act and/or
Section 10 of the Rivers and Harbors Act, and for the North Carolina Division of Water Quality's
(DWQ) associated General 401 Water Quality Certifications. This form is also to be used for any
project requiring approval under any Riparian Buffer Rules implemented by the N.C. Division of Water
Quality. This form should not be used if you are requesting an Individual 404 Permit or Individual 401
Water Quality Certification. The USACE Individual Permit application form is available online at
http://www.saw.usace.anny.mil/wetlands/Penn app.htm.
The USACE is the lead regulatory agency. To review the requirements for the use of Nationwide,
Regional or General permits, and to determine which permit applies to your project, please go to the
USACE website at http://www.saw.usace.anny.mil/wetlands/reglour.htm, or contact one of the field
offices listed at the end of this application. The website also lists the responsible project manager for
each county in North Carolina and provides additional information regarding the identification and
regulation of wetlands and waters of the U.S.
The DWQ issues a corresponding Certification (General or Individual), and cannot tell the applicant
which 401 Certification will apply until the 404 Permit type has been determined by the USACE.
Applicants are encouraged to visit DWQ's 401/Wetlands Unit website at
http://h2o.enr.state.nc.us/ncwetlands to read about current requirements for the 401 Water Quality
Certification Program and to determine whether or not Riparian Buffer Rules are applicable. The
applicant is also advised to read the full text of the General Certification (GC) matching the specific 404
Permit requested. In some cases, written approval for some General Certifications is not required,
provided that the applicant adheres to all conditions of the GC. Applicants lacking access to the internet
should contact DWQ's Central Office in Raleigh at [phone].
Trout Waters Coordination - Special coordination with the North Carolina Wildlife Resources
Commission (NCWRC) is also required for projects occurring in any of North Carolina's twenty-five
counties that contain trout waters. In such cases, the applicant should contact the appropriate NCWRC
regional coordinator (listed by county on the last page of this application).
Page 1 of 11
CAMA Coordination - If the project occurs in any of North Carolina's twenty coastal counties (listed on
the last page of this application) the applicant should also contact the North Carolina Division of Coastal
Management (DCM) at [phone]. DCM will determine whether or not the project involves a
designated Area of Environmental Concern, in which case DCM will act as the lead permitting agency.
In such cases, DCM will require a Coastal Area Management Act (CAMA) Permit and will coordinate
the 404/401 Permits.
USACE Permits - Submit one copy of this form, along with supporting narratives, maps, data forms,
photos, etc. to the applicable USACE Regulatory Field Office (addresses are listed at the end of this
application). Upon receipt of an application, the USACE will determine if the application is complete as
soon as possible, not to exceed 30 days. This PCN form is designed for the convenience of the applicant
to address information needs for all USACE Nationwide, Regional or General permits, as well as
information required for State authorizations, certifications, and coordination. Fully providing the
information requested on this form will result in a complete application for any of the USACE
Nationwide, Regional or General permits. To review the minimum amount of information that must be
provided for a complete PCN for each USACE Nationwide permit, see Condition 13, 65 Fed.Reg. 12893
(March 9, 2000), available at http://www.saw.usace.ann mil/wetlands/nwpfnalFedReg?pdf.
Processing times vary by permit and begin once the application has been determined to be complete.
Please contact the appropriate regulatory field office for specific answers to permit processing periods.
401 Water Quality Certification or Buffer Rules - All information is required unless otherwise stated
as optional. Incomplete applications will be returned. Submit seven collated copies of all USACE
Permit materials to the Division of Water Quality, 401/Wetlands Unit, 1650 Mail Service Center,
Raleigh, NC, 27699-1650. If written approval is required or specifically requested for a 401
Certification, then a non-refundable application fee is required. In brief, if project impacts include less
than one acre of cumulative wetland/water impacts and less than 150 feet cumulative impacts to
streams, then a fee of $200 is required. If either of these thresholds is exceeded, then a fee of $475 is
required. A check made out to the North Carolina Division of Water Quality, with the specific name of
the project or applicant identified, should be stapled to the front of the application package. For more
information, see the DWQ website at http://h2o.ehnr.state.nc.us/ncwetlands/fees.html. The fee must be
attached with the application unless the applicant is a federal agency in which case the check may be
issued from a separate office. In such cases, the project must be identifiable on the U.S. Treasury check
so that it can be credited to the appropriate project. If written approval is sought solely for Buffer Rules,
the application fee does not apply, and the applicant should clearly state (in a cover letter) that only
Buffer Rule approval is sought in writing. Wetlands or waters of the U.S. may not be impacted prior to
issuance or waiver of a Section 401 Water Quality Certification. Upon receipt of a complete application
for a 401 Certification, the Division of Water Quality has 60 days to prepare a written response to the
applicant. This may include a 401 Certification, an on-hold letter pending receipt of additional
requested information, or denial.
Page 2 of 11
Office Use Only: Form Version April 2001
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: 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: ?
II. Applicant Information
1. Owner/Applicant Information
Name: Town of Morrisville
Mailing Address: 100 Town Hall Drive P.O. Box 166
Morrisville, North Carolina 27560
Telephone Number: 919-463-6150
E-mail Address:
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: Peter Jelenevsky
Company Affiliation: Soil & Environmental Consultants, Inc.
Mailing Address: 11010 Raven Ridge Road
Raleigh NC 27614
Telephone Number: 919-846-5900 Fax Number: 919-846-9467
E-mail Address: [e-mail]
Fax Number: 919-468-6011
Page 3 of 11
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: Morrisville Community Park Stream & Riparian Buffer Mitigation Site
2. T.I.P. Project Number (NCDOT Only): N/A
3. Property Identification Number (Tax PIN): PIN #0745620038 & PIN #0745711715
4. Location
County: Wake Nearest Town: Morrisville
Subdivision name (include phase/lot number): N/A
Directions to site (include road numbers, landmarks, etc.): From I-40 West towards RDU
Airport, take exit 285, left onto Aviation Parkway. Take Aviation Parkway to Davis Drive.
Take a left onto Davis Drive then the next left onto Morrisville Parkway and take next left
into Morrisville Community Park
5. Site coordinates, if available (UTM or Lat/Long): 35°48'58.7"N 78°50'32.9"W (taken from
a point along the stream in the middle of the property)
(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: The
majority of the site is being utilized to facilitate recreational uses such as picnic shelters,
soccer fields baseball fields restrooms and parking facilities.
7. Property size (acres): approximately 32 acres
8. Nearest body of water (stream/river/sound/ocean/lake): UT to Crabtree Creek (locally
identified as Hatchet's Grove Tributary)
Page 4 of I 1
9. River Basin: Neuse
(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/mapa/.)
10. Describe the purpose of the proposed work: The purpose of the proposed work is to restore
the stream channel and adjacent Riparian buffer.
11. List the type of equipment to be used to construct the project: Hydraulic excavators, arg ders,
front end loaders=typical g Lading equipment
12. Describe the land use in the vicinity of this project: Primarily residential
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.
N/A
V. Future Project Plans
Are any additional permit requests anticipated for this project in the future? If so, describe the
anticipated work, and provide justification for the exclusion of this work from the current
application: N/A
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.
Page 5 of I 1
1. Wetland Impacts
Wetland Impact Area of Located within Distance to
Site Number Type of Impact* Impact 100-year Floodplain** Nearest Stream Type of Wetland***
indicate on map) acres es/no) linear feet
N/A N/A N/A N/A N/A N/A
* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, nit,
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://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 existing wetlands on the property: <0.1 acres
Total area of wetland impact proposed: 0
2. Stream Impacts, including all intermittent and perennial streams
Stream Impact Length of Average Width Perennial or
Site Number Type of Impact* Impact Stream Name* * of Stream Intermittent?
indicate on ma) linear feet Before hn act leasespecify)
N/A N/A N/A N/A N/A N/A
* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated np-rap,
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.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www.usgs.gov. Several intemet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com,
www.mapquest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: N/A
3. Open Water Impacts, including Lakes, Ponds, Estuaries, Sounds, Atlantic Ocean and any
other Water of the U.S.
Open Water Impact Area of Name of Waterbody Type of Waterbody
Site Number Type of Impact* Impact le)
(if applicable) lake, pond, estuary, sound,
indicate on ma acres bay, ocean, etc.
N/A N/A N/A N/A N/A
* List each impact separately and identify temporary impacts. impacts mctude, but are not limited to: my cxcavauvi,, uiedgmg,
flooding, drainage, bulkheads, etc.
4. 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.): N/A
Page 6 of 11
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): N/A
Size of watershed draining to pond: N/A Expected pond surface area: N/A
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.
No permanent impacts to streams or wetlands are proposed. The project will restore 3,100
linear feet of perennial stream channel by incorporating a more appropriate sinuous pattern and
longitudinal profile (bed form that will include riffles runs, pools, and glides). The existing
straightened channel length is approximately 2,700 feet and the restoration plan will increase the
stream length by gpproximately 400 linear feet Portions of the old channel that will not be
connected to the restored stream will be backfilled following the dewatering procedure. If cut
and fill volumes do not balance out between the excavation of the restored channel and fill of the
old channel vernal pools will be created
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
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
Page 7 of 11
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
htip://h2o.enr.state.nc.us/ncwetlands/strmgide.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.
Please see the enclosed Morrisville Community Park Stream Buffer Mitigation Plan
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 hn://h2o.enr.state.nc.us/wEp/index.htrn. 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): N/A
Amount of buffer mitigation requested (square feet): N/A
Amount of Riparian wetland mitigation requested (acres): N/A
Amount of Non-riparian wetland mitigation requested (acres): N/A
Amount of Coastal wetland mitigation requested (acres): N/A
IX. Environmental Documentation (DWQ Only)
Does the project involve an expenditure of public funds or the use of public (federal/state/local)
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)
Page 8 of 11
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
(square 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.
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.
N/A
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.
N/A
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.
Page 9 of 11
XIII. 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 0
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).
N/A
L A
22 may 2 0,, v
Applicant/Age t' 3 ature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
US Army Corps Of Engineers Field Offices and County Coverage
Asheville Regulatory Field Office Alexander Cherokee Iredell Mitchell
US Army Corps of Engineers Avery Clay Jackson Polk
151 Patton Avenue Buncombe Cleveland Lincoln Rowan
Room 208 Burke Gaston Macon Rutherford
Asheville, NC 28801-5006 Cabarrus Graham Madison Stanley
Telephone: [phone] Caldwell Haywood McDowell Swain
Fax: [phone] Catawba Henderson Mecklenburg Transylvania
Raleigh Regulatory Field Office Alamance Durham Johnston Rockingham
US Army Corps Of Engineers Alleghany Edgecombe Lee Stokes
6508 Falls of the Neuse Road Ashe Franklin Nash Surry
Suite 120 Caswell Forsyth Northampton Vance
Raleigh, NC 27615 Chatham Granville Orange Wake
Telephone: [phone] Davidson Guilford Person Warren
Fax: [phone] Davie Halifax Randolph Wilkes
Washington Regulatory Field Office Beaufort Currituck Jones
US Army Corps Of Engineers Bertie Dare Lenoir
Post Office Box 1000 Camden Gates Martin
Washington, NC 27889-1000 Carteret* Green Pamlico
Telephone: [phone] Chowan Hertford Pasquotank
Fax: [phone] Craven Hyde Perquimans
Wilmington Regulatory Field Office Anson Duplin Onslow
Pitt
Tyrrell
Washington
Wayne
Union
Watauga
Yancey
i
Wilson
Yadkin
*Croatan National Forest Only
Page 10 of 11
US Army Corps Of Engineers Bladen Harnett Pender
Post Office Box 1890 Brunswick Hoke Richmond
Wilmington, NC 28402-1890 Carteret Montgomery Robeson
Telephone: [phone] Columbus Moore Sampson
Fax: [phone] Cumberland New Hanover Scotland
US Fis
US Fish and Wildlife Service
Raleigh Field Office -
Post Office Box 33726
Raleigh, NC 27636-3726
Telephone: [phone]
h and Wildlife Service / National N
US Fish and Wildlife Service
Asheville Field Office
160 Zillicoa Street
Asheville, NC 28801
Telephone: [phone]
[arine Fisheries Service
National Marine Fisheries Service
Habitat Conservation Division
Pivers Island
Beaufort, NC 28516
Telephone: [phone]
North Carolina State Agencies
Division of Water Quality
401 Wetlands Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
Telephone: [phone]
Fax: [phone]
Division of Water Quality
Wetlands Restoration Program
1619 Mail Service Center
Raleigh, NC 27699-1619
Telephone: [phone]
Fax: [phone]
CAMA and NC Coastal Counties
State Historic Preservation Office
Department Of Cultural Resources
4617 Mail Service Center
Raleigh, NC 27699-4617
Telephone: [phone]
Fax: [phone]
Division of Coastal Management Beaufort Chowan Hertford Pasquotank
1638 Mail Service Center Bertie Craven Hyde Pender
Raleigh, NC 27699-1638 Brunswick Currituck New Hanover Perquimans
Telephone: [phone] Camden Dare Onslow Tyrrell
Fax: [phone] Carteret Gates Pamlico Washington
NCWRC and NC Trout Counties
Western Piedmont Region Coordinator Alleghany Caldwell Watauga
3855 Idlewild Road Ashe Mitchell Wilkes
Kernersville, NC 27284-9180 Avery Stokes
Telephone: [phone] Burke Surry
Mountain Region Coordinator Buncombe Henderson Polk
20830 Great Smoky Mtn. Expressway Cherokee Jackson Rutherford
Waynesville, NC 28786 Clay Macon Swain
Telephone: [phone] Graham Madison Transylvania
Fax: [phone] Haywood McDowell Yancey
Page 11 of 11
Sent By: Town of Morrisville- 919 468 6011; May-22-02 11:58AM; Page 212
PACE 02
soil & Environmental Consultants PA,
11010 RaV64 Ridge Road Raleigh, NoM Cuolina 27614 - Phone: [phone]
P2x=[phone]
wW W.Sa"MC.com
AGENT AUTHORIZATION FORXvI
All Bunks To Be Filled in 13Y The Current Landowner
Name --r +N,.? c f lr o R?ccs v t LLf
Address: P. v o x /!06 A) C- S' 6 0
Phone: fed 3
Project Name Description. M*!ZR-41 ts,ta, ? C0"4-,,v,i r?. f'4RK ST-A A,.. 44 l3??r?2 P?sr`s,car7..,?
Date: A'ii4 y 2.Z ?o ?_.
The Depart of the Army
U.S. Army Corps of Engineers, Wilmington DiSUIct
P.O. Box
WilMh%lt r NC 28402
Attn: MR. AMANDA ]ONES
Field Otte: RALEIGH REGULATORY FIELD OFFICE
Re: Wetbuids Related Consulting And Permitting
To Whom it may Cwcem:
I, the curient yz? owner, hereby designate and authorize Sod & Environmental Consultants, Inc. to
act in :my behalf as my agent in the processing of permit applications, to famish upon i+ecluest '
supplemental information in support of applications, etc. f7Coxn this day forward. The z.z. day of
a
This notification supersedes any previous correspondence concerning the agent for this project
NOTICE. This !authorization, for lnabifity and pmfessiond courtesy reasons, is valid only for
Vvernmerd ofAclatls to enter the property when accompaWed by S&EC sta:6f. You should call S&EC
to a2rauge a site meeting prior to vWting the site.
Print Property Owner's Name Property Owner's ature
cc: Mr. John Dorney cc: Mr. Peter A. jelenevsky
NCDENR DWQ, Water Qualty Plaming Soil 6Environnwnal Cons
ultants, b1c-
4401 Reed} Creek Road 11010 Raven Ridge Road
Raleigh, NC 27602 Raleigh, NC 27614 88ant.frzn
ch?aRr,_....?-sneer oro oe??•
PNIB 291, 302():I ,ProW`rib . Church Road 9 i10 Boston o;
38178 L awe?dpcJo Drive 410 $oston Road
Chadoae, NC 28269-7197 Greensboro, NC 27455 'rayloravilla, NC 28681
Phone: [phone] Phone; [phone] Phone [phone]
Pax_ [phone] Fmx: [phone] Fax: [phone]
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
January 19, 2006
Morrisville Community Park
Page 1 of 2
Mr. Patrick Smith
S&EC
11010 Raven Ridge Rd
Raleigh, NC 27614
RE: Morrisville Community Park, Wake County, NC
Dear Mr. Smith:
DWQ has received and reviewed the, "Year-One Monitoring report for Morrisville Community Park: Stream and
Riparian Buffer Restoration Project, September 2005." According to our records DWQ project number 01-1380
was withdrawn. Please provide any further information you may have concerning the certification this project is
being conducted under.
The project appears to be moving in a positive direction. The following questions or comments are made in order to
help the project continue to improve and finish successfully.
Buffer Vegetation Monitoring
1.. The vegetation in plot 1 meets the success criteria of 320 TPA, but the number of trees is much lower than
in the other plots. This suggests that a portion of the site may not be succeeding as well at revegetation or
plant growth.
2. There is a high number of volunteer trees (especially sweet gum in plot 2). This will need to be monitored
to insure that the volunteers are not out competing the planted or desired species.
Stream Monitoring
1. Channel pattern, dimension and profile seem to be generally stable, although pebble counts show some
sedimentation (D50 declines from 7 mm to Imm). There appear to be a few areas with problems, but a
repair plan is being written at this time which should address these problem areas.
2. The benthic invertebrate community seems to be recovering well. While taxa richness at the site above the
restoration was relatively stable, the taxa richness (both total and EPT) at sites within and below the
restoration reach increased to values comparable to upstream. The overall tolerance (NCBI) of the
communities within and below the project declined more than the upstream site, indicating an improving
situation as well. Further updates will give an indication of whether this recovery is continuing to progress.
3. In future reports, instead of a table with average metrics, please include a list of the taxa collected at each
site for each year. This enables better between-site and and between-year comparisons.
If you have any questions concerning these comments or if you need any further assistance please do not hesitate to
contact Larry Eaton of my office at [phone]. We look forward to receiving future reports and watching for
the continued success of the project.
401 Oversight/Express Review Permits Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] / FAX [phone] Internet: htti):Hh2o.enr.state.nc.us/newetiands
NorthCarolina
Naturally
An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper
September 6, 2005
S&EC Project No. 6798.D3
Mr. Todd Tugwell
U.S. Army Corps of Engineers
Raleigh Regulatory Field Office
6508 Falls of the Neuse Road, Suite 120
Raleigh, North Carolina 27615
Re: Morrisville Community Park
Stream and Neuse Riparian Buffer Restoration Project
Wake County, North Carolina
Year-One Monitoring Report
Dear Sirs,
Enclosed please find a copy of the Year-One Monitoring Report for the above referenced project.
This report includes the results of vegetative monitoring counts, the results of Benthic
Macroinvertebrate sampling, permanently monitored cross-section plots, longitudinal profile data,
pebble counts, and photographic documentation.
If you have any questions or require further information, please contact us at [phone].
Sincerely,
SOIL & ENVIRONMENTAL CONSULTANTS, PA
Environmental Consultants, PA
Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
Mr. John Dorney
NC Division of Water Quality
401 Wetlands Unit
1650 Mail Service Center
Raleigh, North Carolina 27699-1650
Patrick K. Smith, P.E.
Project Manager
Enclosures:
Year-One Monitoring Report
D
SEP 7 2005
Cc:
WETLY NR - WATER QUALITY
§ AHQ
, Town Engineer, Town of Morrisvil e
Blake Mills, IATER BRgNCH
Year-One Monitoring Report
for
MORRISVILLE COMMUNITY PARK
STREAM & RIPARIAN BUFFER
RESTORATION PROJECT
Soil & Environmental Consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandBC.com
Wake County, North Carolina
S&EC Project No. 6798.D3
September 2005
TABLE OF CONTENTS
1.0 INTRODUCTION .................................................................................................................... 2
1.1 Introduction .............................................................................................................................. 2
1.2 Project Description/Intent ........................................................................................................2
' 1.3.1 Buffer Monitoring .............................................................................................................. 3
1.3.2 Channel Morphology Monitoring ......................................................................................4
1.3.3 Benthic Macroinvertebrate Monitoring ............................................................................. 4
2.0 CONSTRUCTION ....................................................................................................................6
2.1 Site Construction ....................................................................................................................... 6
2.2 As-Built Plans ........................................................................................................................... 6
' 3.0 MONITORING .........................................................................................................................7
3.1 Buffer Vegetation Monitoring ................................................................................................ .. 7
' 3.1.1 Sampling Results .......................................................................................................... .. 7
3.1.2 Vegetation Monitoring Summary ................................................................................. .. 9
3,.2 Stream Physical Monitoring ................................................................................................... .. 9
3.2.1 Methodology ................................................................................................................. ..9
'
3.2.2 Channel Morphology & Channel Stability ................................................................... 10
3.2.3 Bank Vegetation ........................................................................................................... 10
' 3.2.4 Physical Monitoring Summary ..................................................................................... 11
3.3 Benthic Macroinvertebrate Monitoring .................................................................................. 11
3.3.1 Benthic Sampling Results ..................................................................................................... 11 -
' 3.3.2 Benthic Monitoring Summary ......................................................................................... 12
3.4 Future Monitoring ................................................................................................................... 12

3.5 Monitoring Summary - Year 1 (2004) ...................................................................................13
11

1.0 INTRODUCTION
' 1.1 Introduction
' This monitoring report has been prepared by Soil & Environmental Consultants, PA
(S&EC) in order to present and evaluate site monitoring data for the period February
2004 through March 2005 (Year 1) for the Morrisville Community Park Stream and
' Riparian Buffer Restoration Project in Wake County, North Carolina. This report
includes the following:
' Project Description/Intent
Site Construction
' Buffer Monitoring
' Stream Monitoring
Figures 1 through 4
' Appendix A - Site Comparison Photographs
Appendix B - Cross-Section & Longitudinal Profile Data
' Appendix C - Pebble Count Data
' Appendix D - Benthic Macroinvertebrate Data
' 1.2 Project Description/Intent
The Town of Morrisville proposed the restoration of approximately 3,100 linear feet of
stream channel and approximately 6.5 acres riparian buffer for the purpose of providing
' compensatory mitigation for unavoidable stream and Neuse riparian buffer impacts
associated with its development projects. The mitigation credits generated within the
' Morrisville Community Park were used to compensate for stream and Neuse riparian
buffer impacts specifically related to the Crabtree Crossing Parkway - Town of
Morrisville (DWQ project # 01-1380). The remaining stream and buffer restoration
' credit yields will be utilized to offset future unavoidable impacts proposed and funded by
the Town of Morrisville.
' The mitigation project was completed within the confines of the approximate 32-acre
Morrisville Community Park located approximately 400 feet east of Davis Drive (SR
1613), accessible from Morrisville Parkway located south of the Park entrance. This site
' is located within the Neuse River Basin, USGS Hydrologic Unit Code 03020201and
subbasin 030402 (USGS 1974 and DENR 1999).

1
The mitigation project objectives include:
' 1) The restoration of the slightly incised, straightened, and eroding channel, by
utilizing natural channel design to create a stable, self-maintaining stream that
' will not aggrade nor degrade (Priority 1 Stream Restoration).
2) Ensure channel and stream bank stabilization by utilizing grade control
' structures, root wads, and native vegetation (on-site transplants, live stakes, and
bare roots), in conjunction with the eradication or modification of current
undesired land use practices (grounds maintenance).
' 3) Improve and create bed form diversity (riffles, runs, pools, and glides).
' 4) Re-establish the historic active floodplain functionality and hydrology by
constructing the new channel within the historic floodplain area, matching the
bankfull elevation with the current flood plain elevation.
5) Re-establish a native forested riparian plant community and remove invasive
exotic species that currently exist within the restoration corridor.
6) Create a diverse terrestrial and aquatic wildlife habitat area.
7) Integrate existing and proposed park uses (greenway trail) with the proposed
restoration plan providing aesthetic and educational values.
I
I

1.3 Monitoring Plan
As described in the approved mitigation plan, the restoration site will be monitored for
five consecutive years or until the required success criteria has been met as determined by
the North Carolina Department of Environment and Natural Resources (NCDENR),
Division of Water Quality (DWQ) and the U.S. Army Corps of Engineers (USAGE).
Monitoring activities were initiated immediately following the completion of the stream
construction. Parameters included in the long term monitoring (to ensure the success of
the stream and buffer restoration) include stream channel surveys (longitudinal and cross-
sectional profiles), plant survival and diversity inventories, and benthic macroinvertebrate
sampling. Pre-determined photographic points were established for visual comparison of
the restoration project between monitoring years.
1.3.1 Buffer Monitoring
Vegetation within the restored riparian buffer will be monitored for five
consecutive years in accordance with the approved monitoring plan. Three
vegetation monitoring plots were established on site. Each plot consists of a
square, 10 meters (32.8 feet) on each side (100 square meters, or approximately
1075 square feet) cornered by four wooden stakes and located with GPS
3

7
technology. Vegetation data gathered within each plot includes species and
number of each species present. The primary focus of the vegetative monitoring
is solely on the tree and shrub stratum, although herbaceous species encountered
may also be recorded. The ultimate goal is to have established a minimum of 320
native trees species per acre at the end of the 5-year monitoring period. The
Year 1 vegetation sampling was preformed on October 29, 2004.
1.3.2 Channel Morphology Monitoring
The stream channel stability is monitored by establishing permanent cross-
sections approximately every 500 feet that are comprised of an adjacent riffle and
pool segment (nested pair). Each cross-section was permanently positioned on
the ground with capped rebar pins and field located with GPS technology. All of
these cross-sectional surveys were utilized as photographic points.
The permanent cross-section monitoring points were established immediately
following construction, and the "as-built" stream channel dimension, pattern, and
profile was surveyed for the purpose of establishing a baseline for future
comparison purposes. The monitoring plan calls for channel surveys to be
completed during years 1, 3 and 5.
Other stream channel measurements including pebble counts, stream pattern data
and longitudinal profile data are also described in this report. Annual inspection
of in-stream rock vane and other structures is preformed annually to insure bed
stability. The Year 1 stream channel survey was preformed on November 9 and
10, 2004.
1.3.3 Benthic Macroinvertebrate Monitoring
In accordance with NC-DWQ protocols, stream benthic macroinvertebrates
should be sampled prior to channel construction and annually for three
consecutive years, starting one year after channel restoration.
Due to the length and hydrologic order of the restored channel reach, the full-
scale investigation for collecting stream invertebrates described in the
NCDENR's Standard Operating Procedures for Benthic Macroinvertebrates was
utilized (NCDENR-DWQ 2001). All field samples were to be collected by
certified individuals that participated in the Aquatic Insect Collection Protocols
Workshop presented by the 401 Certification Unit-Biological Assessment Unit.
' Three benthos sampling locations were established: Station 1 was established
approximately,Z_0_(LYfeet-u rQaatnszf the-restoratiorlxach, station 2 was
established along a typical riffle-pool sequence within the subject restoration
' reach and station 3 was established ..immediately downstream of the restoration
reach. The pre-restoration benthos sampling occurred-durin -dfe"last week of

' May 2002. This pre-restoration data has been used as a baseline for comparison
with all restoration sampling.
Once the restoration was complete, the sample taken within the existing creek was
re-established in approximately the same relative location as the pre-restoration
- ('e -/ "''
sample. Monitoring Year 1 samples were collected on May 24,L21-0-05
All samples have been identified by a certified laboratory, Pennington &
Associates, Inc. of Cookeville, TN, with the following information provided; 1)
list of all taxa collected, 2) list of Ephemeroptera, Plecoptera, and Trichoptera
EPT taxa, 3) number of individuals per taxa, and 4) the biotic indices for taxa in
North Carolina.
5
i
2.0 CONSTRUCTION
I 2.1 Site Construction
Site restoration construction took place from late Jul 2003 to late October 29 (13?
' Construction was performed by North State Environmental, Inc., of Winston-Salem, NC.
Construction oversight was performed by Soil and Environmental Consultants, PA.
' Upon completion of grading operations, the site was seeded and mulched. Punch list
items were completed in February 2004. In March 2004, the site was planted by North
' State Environmental, Inc. Planted zones adjacent to the stream restoration consisted of
the riparian zone (Meuse Buffer) and the bankfull channel area (channel banks).
' 2.2 As-Built Plans
In July 2004, S&EC visited the project site to observe site conditions and collect limited
' engineering survey data relative to completed grading and structural components of the
project. While on site, photographic site records were collected, and general design
intent was confirmed through collection of survey data. An As-Built Report was
' completed in July 2004 and submitted for Agency and Owner records.
I

I 3.0 MONITORING
This section includes information concerning; 1) buffer vegetative monitoring, 2)
physical stream monitoring, 3) stream benthic macroinvertebrate monitoring, and 4)
future monitoring requirements.
' 3.1 Buffer Vegetation Monitoring
I The Neuse Riparian Buffer was planted with thirteen (13) native bottomland hardwood
species common to the area. Species included green ash (Fraxinus pennsylvanica),
' American sycamore (Platanus occidentalis), swamp chestnut oak (Quercus michauxii),
river birch (Betula nigra), overcup oak (Quercus lyrata), water oak (Quercus nigra), tulip
poplar (Liriodendron tulipifera), black gum (Nyssa sylvatica), silky dogwood (Corpus
' amomum), black willow (Salix nigra), ironwood (Carpinus carolinana), button bush
(Cephanathus occidentalis), and elderberry (Sambucus canadensis).
' Success criteria for vegetation is based on the average number of live stems per acre
across the site as described in the Mitigation Plan. As described in the Mitigation Plan, a
mean density of 320 stems per acre is required at the end of the five-year monitoring
' period. Additionally, while not specifically required in the approved Mitigation Plan, it
was desired that no single planted species comprise greater than twenty percent (20%) of
the surviving stems at the end of the monitoring period.
' 3.1.1 Sampling Results
' Three (3) sample vegetation plots (VP) are located across the site. Each plot is a
square, 10 meters (32.8 feet) on each side (100 square meters, or approximately
1075 square feet). The locations of sample vegetation plots are identified on the
' As-built Drawings. For ease of reference, copies of a select portion of the As-
Built Drawings are included in this report (Figures 1 through 4).
I The total number of live stems in each sample plot as of October 29th, 2004:
Plot Numbers VP1 VP2 VP3
' Total Wood Stems 8 34 26
' The average stems per sample plot is 22.6 stems. A review of the sample plots
reveals a current (2004 - Year 1) site survival density estimate of
approximately 917 stems per acre.

Species diversity within each monitoring plot is described in the following table:
Plot Number
Q
Q
Q
Species VP1 VP2 VP3
American
Sycamore 2 - -
River Birch 1 2 1
Green Ash 2 2 9
Oak, Water - - 1
Oak, Willow 1 2 -
Oak, Swamp
Chestnut 1 3 2
Persimmon V - 8 8
Black Willow - 3 -
Elderberry - 2 5
Sweet Gum V - 12* -
Alder (V 1 - -
Totals 8 34 26
* - indicates numerous volunteers
* - indicates volunteer species
There are eleven (11) different woody species represented within the three (3)
sample plots. There are several species that comprise more than 20% of the total
stand within the counted plots. Four species, Willow Oak, Persimmon, Sweet
Gum, and Alder while not planted were observed as volunteer species (V).
Plot 1, due to its small number of live stems, should be disregarded for species
diversity, as the sample is not large enough to make any conclusions.
Plot 2 contained two species that comprised over 20% of the total stand;
persimmon and sweet gum both of which are volunteer species. Persimmon
accounted for 23% of species in that plot. The excessive amount of sweet gum
trees (35%) was not due to overplanting of that species, but to the natural
recruitment of volunteers. As this is a natural occurrence, we feel it should be
disregarded.
In plot 3, again persimmon accounts for greater than 20% as well as Green Ash;
' combined they comprise 65% (30% and 35% respectively) of the total plot.
These numbers could be due to the small size of the plants and the presence of
dense herbaceous vegetation, making the woody stems difficult to locate.

Although there are shown species deviations from those included in the original
mitigation plan, excluding these species (416 stems per acre) still exceeds the
' above mentioned requirement of 320 stems per acre. Six species buttonbush,
silky dogwood, tulip poplar, overcup oak, black gum, and ironwood, which were
7

' planted on site and were not counted in any of the three vegetation plots, were
observed elsewhere on site although no specific numbers were recorded.
3.1.2 Vegetation Monitoring Summary
' Stem count will most likely continue to vary in future years in both total stem
count as well as species diversity. Experience on similar sites indicates an
increase in total stem count in subsequent years is likely. The increase could
' come about because at the time the early stem counts were made some of the trees
were small and still competing with other vegetation, thus making it difficult to
determine if all stems were counted early in the monitoring period.
' In summary, the vegetative component of the mitigation effort meets total
stem and diversity criteria in Year 1 and success criteria as specified in the
' Monitoring Plan. Based on these results and experience with similar
projects, continued success is anticipated throughout the remainder of the
monitoring period.
3.2 Stream Physical Monitoring
Soil & Environmental Consultants, PA completed the Year 1 physical monitoring of the
restoration site, on November 9 and 10, 2004. During and shortly after the construction
phase (July 2003-October 2003) of the stream restoration, approximately 14 bankfull
' events (or higher) were observed or evidence of a flood event was observed (wrack lines,
flood debris). The majority of the flood events occurred mid to late winter 2003.
3.2.1 Methodology
Data collected during the Year 1 monitoring activities included the survey of the
total restored length of longitudinal channel profile, eight (8) permanently
established channel cross-sections (4 nested pairs). Comparison photographs of
all cross-sections were taken and are included in Appendix A.
Field survey was completed utilizing total station technology, which identifies
and records the northing, easting, and relative elevation of each survey point. The
' longitudinal profile was surveyed from the start of restoration to the end by
collecting points along the thalweg and top of bank.
' Cross-section pins established during the as-built were located using the as-built
plan sheet and a metal detector. Once the pins were located, a 100-foot tape was
stretched between them for orientation purposes and to insure an accurate
' reproduction of the original cross-sectional profile. Caution was used to replicate
previously collected data compiled during the as-built survey. Results of field
surveys including cross-sections and longitudinal profile are included in
' Appendix B. Year 1 geomorphic data collected were plotted in color along with
the as-built for comparison purposes.
9
Pebble count data was taken from two cross-sections (Riffle 3 and Pool 3) in a
random pattern to avoid recording individual substrate more than once. Data was
collected in the immediate vicinity of the cross-section and completed within the
specific bed feature (i.e. riffle or pool) in which the cross-section was surveyed.
Results of the pebble counts are included in Appendix C.

i

3.2.2 Channel Morphology & Channel Stability
Overall channel conditions (bed and bank) and in-channel structures, which
included boulder cross-vanes and root wads, were inspected during the channel
survey to insure proper function and stability.
Based on visual observation of the restored stream channel and in-channel
structures, followed by the comparative analysis of the Year 1 and as-built survey
data sets, the restored channels are relatively stable and exhibit very little
departure (vertical or horizontal) from the as-built conditions. Local areas of
scour and erosion have been identified during site walk-through inspections.
Local adjustments such as these are normal within the first year after restoration.
Other factors causing local scour and erosion are the duration of higher flows
corresponding to upstream dam releases in which the streambanks are saturated
for extended periods of time, and the siltation (excessive sediment loading) and
shifting of the flood recurrance interval caused by the rapid urbanization of the
stream's watershed.
Pebble count comparisons show that Riffle 3 and Pool 3 have both become
slightly less coarse over the first year since construction. The most likely cause of
this is the increased sediment loading from ongoing construction projects higher
in the watershed, but could also be caused in part by sediment derived from local
scour and erosion in the restoration reach.
As expected, the channel is becoming narrower because suspended sediment is
' depositing within the bankfull channel and in some cases obscuring the arms of
several of the boulder cross-vanes. The channel thalweg in many areas has
become deeper due to minor stream adjustments that are typically expected within
' the first year. If the trend continues the channel should narrow and the
width/depth ratio will decrease as desired.

F
3.2.3 Bank Vegetation
The bankfull channel planting area initiates at the base flow elevation (near the
invert) and continues to the top of bank. This zone was originally seeded with a
temporary and permanent seed mix consisting of rye grain, deer tongue (Panicum
clandestinum), and switch grass (Panicum virgatum), lined with erosion control
matting (coir matting-CF7), and live staked. These precautions were completed
10
to prevent erosion following construction and to promote the establishment of
permanent cover within the construction zone.
Live stake species installed along the stream bank included black willow (Salix
nigra), elderberry (Sambucus canadensis), and silky dogwood (Cornus amomum).
In addition to the species planted or applied as seed, an influx of volunteers, as a
result of the numerous bankfull and flood events, have colonized the bankfull
channel area. The species observed included rushes (Juncus spp.), sedges (carex
spp.), spike rushes (Eleocharis spp.), and black willow.
' Percent vegetative cover within the channel was estimated to be 80 to 100
percent. The only bare spots observed were isolated to the bank slump damaged
areas identified previously.
' 3.2.4 Physical Monitoring Summary
' Based on visual observation of the entire restored stream channel (Reach 1 and 2)
and in-channel structures, followed by the comparative analysis of the Year 1 and
as-built survey data sets, the majority of the restored channels are generally stable
' and exhibit little departure (vertical or horizontal) from the as-built condition.
Several areas of local scour and erosion and in-stream structure failure have been
' identified for additional maintenance. The problems observed at the areas in need
of repair include slight lateral erosion, sloughing of oversteep banks, structure
subsidence, and erosion from floodplain drainage into the channel. Soil and
' Environmental Consultants, PA is currently working with the Town of Morrisville
and USACE to develop a repair plan to repair these areas.
Based on the overall success of the restoration (i.e. the stream has retained its
enhanced Rosgen stream-type classification) it is expected that upon completion
of these repairs, success criteria will have been met
3.3 Benthic Macroinvertebrate Monitoring
The Year 1 benthic survey was completed on w_ 200 by S&EC. This sampling
event replicated a baseline benthos survey was performed in May 2002, before
construction commenced, by S&EC. This sampling event was conducted according to
protocol specified by the NCDENR-DWQ Standard Operating Procedures for Benthic
Macroinvertebrates. Samples were taxonomically identified by Pennington &
Associates, Inc. of Cookeville, TN.
3.3.1 Benthic Sampling Results
Results of the Year 1 sampling data by station are shown in Table 1 below:
11
V v V,
I
Table 1 - Benthic Survey Results by Station
Station 1 Station 2 Station 3
Pre- Year 1 Pre- Year 1 Pre- Year 1
Restoration 2005 Restoration 2005 Restoration 2005
TOTAL NO. OF
ORGANISMS
49
62
76
140
40
60
TOTAL NO. OF TAXA 28 - Z 26 24 fr 32 14 +-1? 23
EPT TAXA RICHNESS 3 * 4 2 * z 4 2 + 0 5
EPT ABUNDANCE 14 +r 15 4 +2 33 11 +'' 2 23
NC BIOTIC INDEX 6.97 o.r 6.45 6.38 A-t 5.55 ` 7.53 -6,0 6.2 v
Overall, in Year 1 we see an increase in the total number of organisms. This is
coupled with an increase in the number of different species in Stations 2 and 3.
The richness and abundance of Ephemeroptera, Plecoptera, and Trichoptera
(EPT) taxa showed increases in all three sampling stations, displaying a shift
toward more intolerant species. This shift is also shown in the NC Biotic Index.
Tolerance Values range from 0 for organisms very intolerant of organic wastes to
10 for organisms very tolerant of organic wastes. The biotic index for all three
stations has decreased in Year 1, showing that more intolerant organisms are able
to inhabit the stream. Additional benthic macroinvertebrate sampling data is
included as Appendix D. r.. K

7
3.3.2 Benthic Monitoring Summary

As shown below, the Year 1 monitoring has shown an increase in all four metrics
reported, including EPT Taxa Richness, a generally accepted indicator of water
quality.
Table 2 - Average Annual Benthos Metrics
a?a
Pre-
Restoration Year 1
2005
AVERAGE TOTAL NO. OF ORGANISMS 55 87
AVERAGE TOTAL NO. OF TAXA 22 27
AVERAGE EPT TAXA RICHNESS 2 4
AVERAGE EPT ABUNDANCE 10 24
While a general increase in organisms is not always a positive indicator, we have
seen a shift towards more intolerant species indicating likely improvements in
overall water quality within the restoration reach. The Average EPT Taxa
Richness has increased from 2 species to 4. While this still categorizes the stream
as a poor quality stream (<6), an improvement has been shown. It is likely that as
the system progresses, we will continue to see increased numbers of EPT taxa.
3.4 Future Monitoring
The stream channel monitoring schedule, as outlined in the approved mitigation plan, is
to be completed every other year for 5 consecutive years starting one year after the
12

' completion of construction. This report constitutes the report for Year 1 of the
monitoring period. Additional stream monitoring will be conducted again in the 3`d and
5`h year. Benthic Monitoring will continue annually until Year 3 as verbally agreed upon
' with NC-DWQ staff.
3.5 Monitoring Summary - Year 1 (2004)
' Based on vegetation data collected within the sample plots, the physical stream
survey data, site observations, and enhanced aquatic diversity, the site has met the
' intent of the success criteria as set forth in the mitigation banking instrument for the
calendar year 2004.
' The restored stream channel is generally stable and has typically maintained the design
dimensions throughout several bankfull events.
' Note: Soil and Environmental Consultants, PA is currently
in the process of preparing a Repair Plan for the identified
' site concerns. This plan will be submitted for Agency review
and, once approved, implemented on the restoration site.
' In total, the site has been restored to a functional buffer and stream ecosystem. The
diversity of the restored stream channel adds to the function of the site. The previously
existing channel had little channel diversity. The restored channel has a wide variety of
riffles, pools, point bars (where Raccoon and Heron feed), and in-stream rock and root
' structures that add aquatic cover and help to aerate the stream.
I
I

J

13

Appendix A
SITE COMPARISON PHOTOGRAPHS
Soil and Environmental Consultants, PA
Morrisville Community Park Stream & Riparian Buffer Restoration Project
Riffle 1 Comparison Photographs
Photo 1 - Riffle 1 As-built Condition
Photo 2 - Riffle 1 Condition at Year 1
September 2005
S&EC Project No. 6798.133
Page 1 of 8
Soil and Environmental Consultants, PA September 2005
Morrisville Community Park Stream & Riparian Buffer Restoration Project S&EC Project No. 6798.133
Pool 1 Comparison Photographs
Photo 3 - Pool 1 As-built Condition
Photo 4 - Pool 1 Condition at Year 1
Page 2 of 8
Soil and Environmental Consultants, PA September 2005
Morrisville Community Park Stream & Riparian Buffer Restoration Project S&EC Project No. 6798.D3
Riffle 2 Comparison Photographs
Photo 5 - Riffle 2 As-built Condition
Photo 6 - Riffle 2 Condition at Year 1
Page 3 of 8
Soil and Environmental Consultants, PA
Morrisville Community Park Stream & Riparian Buffer Restoration Project
Pool 2 Comparison Photographs
Photo 7 - Pool 2 As-built Condition

1

I?
t

Photo 8 - Pool 2 Condition at Year 1
Page 4 of 8
September 2005
S&EC Project No. 6798.133
Soil and Environmental Consultants, PA September 2005
Morrisville Community Park Stream & Riparian Buffer Restoration Project S&EC Project No. 6798.D3
Riffle 3 Comparison Photographs
Photo 9 - Riffle 3 As-built Condition
Photo 10 - Riffle 3 at Year 1
Page 5 of 8
Soil and Environmental Consultants, PA September 2005
Morrisville Community Park Stream & Riparian Buffer Restoration Project S&EC Project No. 6798.D3
Pool 3 Comparison Photographs
Photo 11- Pool 3 As-built Condition
Photo 12 - Pool 3 Condition at Year 1
Page 6 of 8
Soil and Environmental Consultants, PA September 2005
Morrisville Community Park Stream & Riparian Buffer Restoration Project S&EC Project No. 6798.133
Riffle 4 Comparison Photographs
Photo 13 - Riffle 4 As-built Condition
Photo 14 - Riffle 4 Condition at Year 1
Page 7 of 8
Soil and Environmental Consultants, PA September 2005
Morrisville Community Park Stream & Riparian Buffer Restoration Project S&EC Project No. 6798.133
Pool 4 Comparison Photographs
Photo 15 - Pool 4 As-built Condition
Photo 16 - Pool 4 Condition at Year 1
Page 8 of 8

I

II

Appendix B
CROSS-SECTION & LONGITUDINAL PROFILE DATA

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