20011381 Ver 1_Mitigation Plans_20010620

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BCD JUN 2 b 20
Mitchell and Associates, Inc.
ENVIRONMENTAL CONSULTANTS
113 Wat 3rd SL 9 IdfoWnw, N.C. 27868 t 262.7624077 • F= 262.7627380
3973 Wharfs! St W Sulknng 0 Suits B 0 WamMgtm N.C. 26403 •910,264.0603 • FA= 910.264.0603
EAICShouVMfmhv1Wmsoa12lss.orp
Proposed Monitoring Plan
Prepared for:
Parker Manufacturing, Inc
and
P'I'P.., INC.
Post Office Box 1037
KernernlHe, N.C. 27285
Prepared by:
Jew fear Burbank
Mitchell & Associates, Inc
3973 B Market Street
Wilmyngtom, NC 28403
June 7, 2001

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Mitcben & Associates, Inc., on behalf of Rocky Carter, bas created a mitigation plan for all
$t [c= impacts that have occurred on his property located on the west side of Patterson Avenue
and approximately 1400 feet North of the intersection of Motor Road in Forsyth County, Winston
Salem, North Carolina, Subsequently, we are now submitting the project time frame and
monitoring pl= to ensure the projects success.
Time
Below is an outline of the time frame necessary to complete the restoration and strewn► creation
project It is our goal to have the 158 -foot portion of pipe.reunaved from Leak Fork Creek, bank
slopes laid back property, and the new channel for the unnamed tributary dug, laid back, and
prepared for planting with in a 45 day time period
The optimum conditions for successful plant installation are when temperature, moisture, and
sttslight are adequate for FmAoation and establishmerrt. In the eastern United States these
conditions are met beginning in mid winter to early spring, in addition plants sbould be installed
when dormant for the higbest rate of snmval. To meet these conditions planting should begun in
November to February depending on weather conditions. 'These plants will be acquired from a
local Commercial, somce. It is our best estimate that approxinamtely 5,500 plants including willow
oak, cottonwood, green wsh, water oak, sweet gum and sycamore will be needed to adequately
cover the lower banks of both the restored section of Lcak Fork Creek and the new =named
tributary. That number 1g denved from channel length and bank width with a planting every 2
square feet,
Michell & Associates wM implement a site inspecdon and monitoring playa to ensure the succes t�
of the project, This plan will meet standard procedures for monitoring a projea, and include
assurance that the she meets with success criteria for xonoration projects.
Wubin 60 days of complcucm of mitiga aom site construction, IN&tchell & Assomates.svZ zubmit a i
reportindicating ail wo& completed and will include: photographs of completed work, the stream
reference reach, longitudinal profiles and cross sections of reference reaches, vegetation sample
plots with locations, and problems encountered and resolved. The location of cross - sections of
reference reaches and vegetative plots are noted on the enclosed map.
Follow up iuspectiow will be conduc=ed on a regular basis and documented in the form of data
sammaries and field notes. Sketches, maps, and photographs will be used to document
vegetation development, channel stability, and structure Performance
vet etati an within the buff=s zone will be inspected for a period of five years or until success
criteria is met, which ever is the longer period of time. Vegetation will be inspected in August or
September of each year after punting, and at a minimum, no one species should exceed 20
percent of the total number of individuals. Success criteria will be met if for each of the first

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three years after monitoring, a minimum of 320 trees per acre of the planted species have
survived. In years four and five, a minimum of 288 to 260 four year old trees per acre leave
survived on the site, and after year five a minimum of 260 five year old trees have survived, If
this vegetation criteri& is not met, replanting will take place and the five year monitoring period
will begin again. Vegetation will also be mspected for the presence of exotic, harmful species that
if detected will be removed. Vegetative plots where data is collected will be taken at the 6 areas
noted and labeled on the map.
- Stem will be inspected 2 times annually-daring it first two years after project
completion, and one time antumlly there after for a period of five years. The entire stream
corridor will be inspected to detect areas of erosion or accumulation. Inspection of bank and
channel conditions will be conducted during low water conditions to allow for viewing of
complete structures and channel bed changes. Photo reference sites (longitudinal phows and
lateral reference photos) and re%tt uce reach monitoring the reach's cross- section and longitudinal
profiles. Success oritem will be met if, for the period of five years fn conjuucaon with the
vegetation monitoring, the stream Bedford feau= and cross - sections remain stable. The stream
shall retain its entranced Rosgen's steam type classification. If any problems arc cncouutol, the
stream channel will immediamiy be reswbiliud and planted
The above monitoring plan is designed to ensure true success of this mitigation project, aud. meets
iMLACOB standardg.

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PTP, Inc. Page 3 02/23/00
Af ter -'Ihe -Fact Permit Application
Additionally, instead of using the typical fescue or grasses, the upper interior and exterior
of the structure should be planted with the following mix:
Spring/Summer Mixture, May 1 -Sept. 15
Fall/Winter Mixture, Sept. 15 -April 30
Browntop millet 20 lbs/a
Rye grain 120 lbs/a
Korean lespedeza* 20 lbs /a
Korean lespedeza* 20 lbs/a
Shrub lespedeza 1 lb /a
Shrub lespedeza l lb /a
Switchgrass 10 lb/a
Partridge pea 101b /a
On slopes less than 3:1 use Korean lespedara
On slopes greater than 3:1 use Crown Vetch or Sericea lespedeza (not prefferred)
Add one of the following to the above mixtures.
Crown Vetch 51bs/acre
Ladino Clover 5 lbslaare Lime & fertilize disturbed areas according
Alfalfa 5 lbs/acre to NCRS soil test and recommendations.
(dote: Mowing should be limited to early spring and should only occur as needed to prevent tree growth
oa the dam or other areas. Mowmg on a 2,3 year schedule should suffice.)
Trees and shrubs (1 year bare root seedlings) should be planted randowly at a minimal
rate of 100 trees per acre on the top and upper portions of the structure and at a minimal rate of
_ 150 per acre arolmd the normal water elevation and littoral shelf area. The following list of tree
species may assist in providing habitat benefits:
Loblolly Pine* Red Cedar Black Guru American Holly Dogwood
Mckory Sumac white oak Willow Oak Red Maple*
Swamp Chestnut Oak Viburnum Green Ash Ironwood Black Cherry
Water Oak Silky Dogwood
Other species may be atilized depending on site requircmmxts and availability. Pines* should not exceed
15% of the reforestation. No more than 201/4 of the tree species will be of a single species. An 809A
success rate is acceptable over five years Large or fast growing trees like Sycamore and Maple** may not
be appropriate around detention fac1tim
iN tt'gation for mi necessary and unperinitted impacts should occur in Forsyth County. If
not possible, mitigation should occur in the same categorical area. Payment into the Wetlauds
Restoration program may be acceptable; however, this should occur only after appropriate
avoidance and minimization has occurred on site.
Thank you for the opportunity to review and comment on this project. If you have arty
questions regarding these comments, please contact me at 336/769 -9453.
Cc: Jobn Dorney, DWQ
Douglas Huggett, CAMA
Jennifer Frye, WSRO -DWQ
Frank McBride, NCWRC
Mark Cantrell, US1'XVS

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1.0 Introduction
Mitchell & Associate$, Ina, on behalf of Rocky Carta, has undertaken the project of creating a
mitigation plan for all stream impacts 'that have occurred on the property located northwest of
Winston Salem, Forsythe County, North Carolina (map 1a. And lb.). The mitigation plan
i1XlUdeg mimmi7n impacts to Lean Fork Creek to less than 500 linear feet, and relocating the
impacted unnamed tnNitary to the back of the property. Rosgen steam restaration techniques are
to be used, as outlined in the following plan Wsgen 1994 Restoration. of the impacted streams
will be described in this report and will adhere to the regulations ofthe U. S. Army Corps of
Engineers (USACOE). This mitigation plan, when implemented, wi.U. effectively enhance and
restore egistjng streams on the project site as well as improve the e3i5ftg downsuem water
quality of Leak Fork Meek.
1.1 Site Descriptions
The property is located on the west side of Patterson Avenue and approximately 1400 feet north
— , of the iutasection of Motor Road in Forsythe County, Winston Salem, North Carolina (Map2),
The site is bounded by route 52 and a Duke Power Right of Way (ROW) located on the west
side. Leak. Fork Creels is a shallow tributary adjacem to the properly that lies within the valley
parallel to Pstter = Avenue on the property's west side. The creek has an average bank to bank
stream width of less dm 12 feet, has a north directional flow, and shows chaaaelization further
downstream. (Pictuml -4). Evidence of rapid erosion can be seen in several places along the
creek banks, and silt fences were placed in a few areas to help retard the erosion process (picture
5). Green algae (family Chloropbyta) was found growing throughout the bottom of the creek
(picture6). The svrrotmding area primarily consists of patches of woody vegetation, numerous
grasses, and small to medium rocks (pictares 7). Trash material was observed along the creek
banks as well as wi*in the water (picture 8). A sewer luxe runs parallel to Leak Fork Creek and
there is evidence that creek f low was latered due to the placement of the sewer line (picture 9).
The =tug site itself has been graded, filled, and is covered with gravel up to its boundaries
(pictures 10 and 11).
1.2 Soil Series Description
The sops located on the propeny are from the Wehadlcee Series and Pacelot Series (Map 3 aad
Appendix A). The Aacelot Series consists ofPacelot fine sandy loam and clay loam and cox
typically be found on slopes from 10 to 45 percent. These soils art well drained with moderately
slow infatarim and rapid runoff. The Wehadkee Series, in particular Wehadkee loam, is
classified as a hydric soil and cbaracterized as being poorly drained and is located on the flood
plain of streams. Infdtzdon is moderate and surface runoff is slow, These soils are also subject
to frequent flooding; for brief periods of timo and can be found on 0 to 2 percent slopes (SCS

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1976).
1.3 Vegetative description
Due to the entire site being cowered with gravel vegetative data was gathered from immediately
north and south or the property. The overstory consisted of Fraruw pennsylva7dca (green ash),
Populus d &oides (easwm cottonwood). Acer rubnan (red maple), Quercus *va (orates oak),
Quecus phellos (willow oak). Quercus alba (white oak), Pinus taeda (loblooly pine),
L4uadwnbar styrnciflua (sweetguml Platanus occidentalb ( sycamore), and LiriodendFOn
tul#*m (yellow poplar). The understory vegeatatim consisted of native grasses, Eupatariwn
cappillifolium (dog fennel), Rosa sp. (Wild rose), and Ph
ytolacca mnericana (pokeweed).
The following proposed mitigation option was introduced by the U.S. Army Corps of Engine=
to re- establish stream areas on-site and to resolve enforcement matters. This mitigation plan
involves removing a portion of the culvert located in Leak Fork Creek and xestm* the area to
nattual conditions. In addition, our client will be required to relocate the impacted unnamed
tributary to the back oft1w property, using approved Rosgen techniques. Rosgen techniques
involve analyzing stream characteristics including geomorphic, chemical, biological processes and
there functions. After this data is collected, a stream can be restored to its original condition and
function by imitafiing its initial state.
2.1 Mitigation procedure
m;rebtt & Associates, inc, has developed the following mitigation plan to resolve the previously
mentioned enfwcement matters_ Our client will be rehired to minimize the present 650 lh=r feet
of impacts to Leak Fork Creek to 1 his will require appme
linear feet of the creek to be opened, the creek ank re- establis and e p acement of
vegetariou and ro along the stream bankg Tlizatiori and erosion. control. The
second component of the 'mitigation plan is related to the impacts associated with the filling of the
ummamed tn`bm previously located on site. This phase be- with redicectimg the culvert
located at the rear of the property east of HW 52 along the perimeter of the project site.-This
to This
redireetxon create app� Jr 1250250feet meand g ?ff RffWcYW--ff—q=nect with
Leak g will provide th e lfi OW with a cleaner bed, as
OpFSR to the original which was littered with trash. Detailed below is the tnetbodology and
data associated with implementing this mitigation plan.

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1976).
1.3 Vegetative description
Due to the entire site being covered with grovel vegetative data was gathered from immediately
north and south or the property. The overstory consisted of Frxdnus penmsylvwdra (green ash),
Papidus deltoides (eastern cottonwood). Acer rubrm (red maple), Quercus nigra (water oak),
Quecus phellos (willow oak), Quercus alba (white oak), Pinus taeda (loblooly pine),
LWuadambar stew lua (sweetff=1 Platamus occidemtalis ( sycamore), and Liriodendron
tulipiyera (yellow poplar). The undemtory vegeatation consisted of native grasses, Eupatorium
cappillifolium (dog fmmel), Rosa xp. (Wild rose), and P)Oolacca americana (pokeweed).
The following proposed mitigation option was introduced by the U.S. Army Corps of Engineers
to re- establish stream areas on-site and to resolve enforcement matters. This mitigation plan
involves reuaoving a portion of the culvert located. in Leak Fork Creek and restoring the area to
natural conditions. 1u addition, our client will be required to relocate the impacted Mnamed
tributary to the back of the property using approved Rosgen techniques. Rnsgen techniques
involve analyzing stream chmwteristics including geomorphic, chemical,, biological processes and
there fimcdons. Afar ibis data is collected, a stream can be restored to its original condition and
fimction by imitatling its initial state.
2.1 mitigation procedure
Mitchell. & Associates, Inc_, has developed the following mitigatim plats to resolve the previously
mentioned enforcement matters. Cur client will be rewired to minimize the present 6501h= feet
of impacts to Leak Fork Creek to less than 50D Imeaz feet This will require approximately 160
linear feet of the creek to be opened, the creek bank m- established, and the placement of
vegetation and mot wads along the stream banks for stabilization and erosion control. The
second component of the 'mitigation plan is related to the impacts associated with the filling of the
unnamed tributary previously located on site. This phase begins with redirecting the culvert
located at the rear of the property east of 1TW 52 along the perimeter of the project site. This
redirection will create approximately 1250 feet of meandering stream which will comcd with
Leak Fork Creek . Redirecting the stream will provide the streamflow with a cleaner bed, as
opposed to the original which was littered with trash. Detailed below is the methodology and
data associated with impleng this, mitigation plan.

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211. Culvert Removal and Stream Restoration
The culvert located in Leak fork Creek is presently approximately 660 linear feet in length and
begins on the Northern property boundary and ends on the southern property boundary (picitaeS
12 and 13). This culvert consists of two large pipes that have provided adequate space for high
stream flow. A portion of the culvert (160 ft.) at the southern property boundary end is to be
removed to lessen the culverts length to 5001inear feet or less. After the culvert is removed, this
area of stream will be restored to its previous ntrurral conditions.
Leak Fork Cheek = be ebaracttized as a F/G type stream that is undergoing degradation and
widening. 'This is cimwudzed by the high width to depth ratio and the presents of undervlg*
and sloughing of the banks botil upslYeM and downstream of the culverts. The banks we
primly being stabilized by grass vegetation, sbmbs and root material from overstory trees. The
erosion is significant where meanders are present, with undercutting on the outer portion and
sloughing on the inner portion. The width of the chancel ranges between 6 and 8 feet while the
baWaU width is approximately 10 -16 feet. Water depth ranges from 4 inches to 12 incites,
varying according to the presents of pools and rifles.
The previously culverted section of the stream will be restored to a natural state with measures
being lmdertakea to Pfevent subsequent erosion. Heavy egWpment will be used to remove fill
material and the two pipes in the culvert, during which erosion control measures will be
Undertaken to avoid contaminstion to the creek. This will be in the form of silt fences placed
araimd the coustruction areas .
The creek bank wilt be sloped at a 2:1 angle. This will mimic healthy sttearu ch,� cs and
prevent f fficr erasion to downstream areas. The 2:I slope offers optimal stability with less need
for increased stabilizatioa methods. (MRCS 1998). Bank tops will be given arotmded edge to
forma gradual transition between upland and slope to allow for suitable plant growth Native
ripatim vepta ion and root wads will be used for bank. stabilization. Root wads with a basal
diameter between 10 to 20 inches from will oaks will bei nstalled using the drive -point method
just above the tae of the slope at mt9 degree angles to the direction of water flow, They will be
installed with 1/3 of the wad below the baseflow elevation. In addition to providing stabttizatioa
the root wads also will impede sediment transport (NCCES 2000). Creel, bed material is
available on site and will be consist with the presem bed material which ranges fromsilt/clay to
cobbles.
2.12 Stream Creation
An urmamed tn- butary once entered the property from the west from a culvert that extends wilder
Hwy. 52. This tributary descends approximately 100 feet through a gully from HW Y. 52 and
eWS at the property Ihm This stre= is =OW (1 -2 feet wide), anad sballow with a depth of 1
foot. The bad of this tributary are low and at an approAxate 1:5 slope. It is bordered by
grassy tipaian vegetation and shrubs in addition to oak s and maples- Bed material consists of
silt/clay, cobbles, and boulders.

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The above proposed mitigation plan meets USACCE stands and will in fact improve the
quality of Leak Fork Creek and its associated unnamed tciy.

I
a) Approximately 1510 linear feet of stream have been excavated, culverted, and filled
along a tract know as ..... These impacts include approximately 850 linear feet of
Leak Fork Creek and an additional 660 feet of an unnamed tributary to Leak Fork
Creek
b) The May 29, 2001 proposed nutigation plan prepared by Mitchell and Associates,
Inc states that impacts to Leak Fork Creek will be reduced to less than 500 feet.
Accordingly, approximately 350 feet of culvert removal and stream restoration is
required, such that the total cumulative impact to Leak Fork Creek is less than 500
feet ( JOHN LETS TALK — math- I think this impact plus the other ut channel adds
up to greater than 500 feet no matter how you slice it- whats the Corp doing ?)
c) Within 30 days, a modification the May 29, 2001 proposed mitigation plan prepared
by Mitchell and Associates, Inc , must be submitted to DWQ to address the
restoration and the respective monitoring of the Leak Fork Creek. After receipt of
this additional information, if DWQ requires modifications to this component of the
plan, a satisfactory /complete wntten response must be provided within 30 days.
d) Approximately 1250 feet of perennial stream mitigation is required to be installed as
proposed in the May 29, 2001 proposed mitigation plan prepared by Mitchell and
Associates, Inc. Further, the following additional items /amendments to the
mitigation plan are required to be submitted and approved by DWQ within 30 days:
• Modification of the riparian (streamside) restoration to omit plant species ? ? ? ? ?9
and to achieve 320 trees per acre at maturity.
• Provide a satisfactory benthic monitoring plan.
• Plans that adequately depict the footprint of the stream restoration efforts,
detailing the location of riffle pools, streambed sinuosity, streambed profile,
location of root wades, and grade control structures.
Other
e) In the event that stream mitigation efforts fail to achieve 1250 feet of perennial stream
(1:1 ? ? ? ?? RULES ? ?91) and/or the restoration of the Leaf Fork Stream segment fails
the balance (mitigation that was determined to be unsuccessful) will be required to be
accomplished by payment into the WRP at $125.00 a linear foot
f) Mitigation success criteria will include data from the monitoring plan and site
inspection by DWQ staff Specifically the criteria necessary to demonstrate
successful mitigation includes the following-
5 years after installation of the mitigation plan, a stable stream bed, bank, and
riparian zone such that the stream is determined to be equilibrium
5 years after installation of the mitigation plan, benthos and/or vertebrate fauna or
well data that affirms that a perennial lotic stream stream feature has been
established.