20040974 Ver 1_COMPLETE FILE_20040616

imap://alicia.duclos%40dwq.denr.ncmail.net @ cros.ncmail.net:143/fe...
Subject: Re: Stormwater question
From: John Dorney <[e-mail]>
Date: Mon, 27 Sep 2004 17:01:19 -0400
To: Alicia Duclos <Alicia.Duclos @ ncmail.net>
CC: Ron Linville <[e-mail]>, Cyndi Bell Karoly <[e-mail]>
alicia - please copy the 401 certification for this project and send to ron linville.
ron - once you get the 401, if you have questions call me or cyndi. thankx
Ron Linville wrote:
I know you guys are busy; but, I need to know this.
For DWQ # 040974 (W-S/FC Schools, East Forsyth Middle School, 178, perennial stream
culvert impacts), can you advise if any stormwater requirements were required in
certification or if any stormwater facilities were proposed for the school site? If
not, why not?
1 of 1 9/28/2004 10:52 AM
O?OF W A TF9pG
lr'1 ?

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Post-it' Fax Note 7671 Date ,Z # of
To 1?-ZoN
l-invi' e- From
//""
Co./Dept l? Co. ?, .? C
Phone # Phone #
Fax # _ Fax #
Mr. Jim Moorefield
Winston-Salem/Forsyth County Schools
P. O. Box 2513
Winston-Salem, NC 27102
APPROVAL of 401 Water Quality Certification with Additional Conditions
Dear Mr. Moorefield:
Alan W. Klimek, P.E., Director
Division of Water Quality
Coleen H. Sullins, Deputy Director
Division of Water Quality
July 27, 2004
DWQ# 04-0974
Forsyth County
WETLANDS/ 401 GROUP
JUL 3 0 2004
WATER QUALITY SECTION
Winston-Salem/Forsyth County Schools has our approval, in accordance with the attached conditions, to place
permanent fill in 178 linear feet of perennial stream for the purpose of constructing an access road to the East
Forsyth Middle School in Forsyth County, as described in your application received by the Division of Water
Quality (DWQ) on June 16, 2004. After reviewing your application, we have determined that this fill is covered
by General Water Quality Certification Number 3404 which can be viewed on our web site at
http://h2o.enr.state.nc.us/ncwetlands. This Certification allows `you to use Nationwide Permit Number 14 when
it is issued by the U.S. Army Corps of Engineers. In addition, y'q u should secure any other applicable federal,
state or local permits before you proceed with your project, including (but not limited to) those required by
Sediment and Erosion Control, Non-Discharge, and Water Supply Watershed regulations. Also, this approval
will expire when the accompanying 404 permit expires unless otherwise specified in the General Certification.
This approval is valid only for the purpose and design that you have described in your application. If you
change your project, you must notify us in writing and you may be required to send us a new application for a
new certification. If the property is sold, the new owner must be given a copy of the Certification and approval
letter and is thereby responsible for complying with all conditions. If total wetland fills for this project (now or in
the future) exceed one acre, compensatory mitigation may be required as described in 15A NCAC 2H .0506
(h). For this approval to be valid, you must follow the conditions listed in the attached certification, as
well as the additional conditions listed below:
1. We understand that you have chosen to contribute to the North Carolina Ecosystem Enhancement
Program (NCEEP) in order to compensate for the impacts to streams. In accordance with 15A NCAC
2R .0402 and 15A NCAC 2B .0242(7), this contribution will satisfy our compensatory mitigation
requirements under 15A NCAC 2H .0506(h) and 15A NCAC 2B .0233(10). Until the NCEEP receives
and clears your check (made payable to: NC DENR Ecosystem Enhancement Program), stream
impacts (including fill) shall not occur. You are required to mitigate for impacts to 178 linear feet of
stream channel. You shall make payment, in the amount determined by the NCEEP, to perform the
restoration of 178 linear feet of warm water stream in the Yadkin River Basin, Cataloging Unit
03040101. You have one month from the date of this Certification to make this payment. Ms. Deborah
Anderson should be contacted at [phone] if you have any questions concerning the Ecosystem
Enhancement Program.
2. The culvert required for this project shall be installed in such a manner that the original stream profile is
not altered (i.e. the depth of the channel must not be reduced by a widening of the streambed). Existing
stream dimensions (including the pattern and profile) are to be maintained above and below the
location of the culvert. The culvert shall be designed and installed to prevent head cutting of the
MAX.
ARA
N
N. C. 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)
[phone] (phone), 919-733-6893 (fax), (httu://h2o.enr.state.nc.us/ncwetlands)
Customer Service #: 1-877-623-6748
stream. If the culvert becomes perched, the appropriate stream grade shall be re-established or, if
the culvert is installed in a perched manner, the culvert shall be removed and re-installed correctly.
The Applicant must submit a plan and receive written approval from this Office to address any head
cutting that will occur as a result of this project (e.g., use of cross vanes downstream of the culvert).
3. The proposed plunge pool shall be constructed according to the design detail submitted with the
application dated June 1, 2004 and received by DWQ on June 16, 2004. Where riprip is required for
energy dissipation and scour protection, it shall be limited to the minimum dimensions specified by
appropriate engineering calculations. Riprap may only be used below the normal high water level. The
original grade and elevation of the stream's cross-section must be maintained. Riprap placed in the
streambed must be inserted into the bed matrix to a depth sufficient to provide the thickness of riprap
required for scour protection. The elevation of the streambed must not be increased by the placement
of riprap. Placement of riprap must not result in destabilization of the streambed or banks upstream or
downstream of the crossing.
4. If concrete is used with any fill material, it shall not be allowed to come in contact with surface waters
until it has cured.
5. The stormwater collection system for this project shall provide energy dissipation and sheet flow for all
stormwater discharges prior to their entering the stream channel.
6. Upon completion of this project, the Applicant shall fill out and return the enclosed "Certificate of
Completion" to notify NCDWQ when all work included in the §401 Certification has been finished. This
certificate should be returned to the 401/Wetlands Unit of the NC Division of Water Quality at the
address listed on the form. Along with the Certificate of Completion, please send photographs
upstream and downstream of the culvert site to document correct installation.
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 1508 of the North Carolina General Statutes to the Office of Administrative
Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This certification and its conditions are final
and binding unless you ask for a hearing.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If
you have any questions, please telephone Daryl Lamb in the DWQ Winston-Salem Regional Office at 336-771-
4600 or Cyndi Karoly in the Central Office in Raleigh 919-733-9721.
Sincerely,
/ Alan W. Klimek, P.E.
AW K/cd I
Attachments
cc: Andrea Wade, U. S. Army Corps of Engineers, Raleigh Regulatory Field Office
Winston-Salem DWQ Regional Office
Central Files
Wetlands/401 File Copy
Christopher Hay, Trigon Engineering Consultants, Inc., P. O. Box 18846, Greensboro, NC 27419-3868
O?O? \NAT ?9pG
O "C
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
Coleen H. Sullins, Deputy Director
Division of Water Quality
July 27, 2004
DWQ# 04-0974
Forsyth County
Mr. Jim Moorefield
Winston-Salem/Forsyth County Schools
P. O. Box 2513 WETLANDS/ 401 GROUP
Winston-Salem, NC 27102
APPROVAL of 401 Water Quality Certification with Additional Conditions JUL 3 d.! 2004
Dear Mr. Moorefield: WATER QUALITY SECTION
Winston-Salem/Forsyth County Schools has our approval, in accordance with the attached conditions, to place
permanent fill in 178 linear feet of perennial stream for the purpose of constructing an access road to the East
Forsyth Middle School in Forsyth County, as described in your application received by the Division of Water
Quality (DWQ) on June 16, 2004. After reviewing your application, we have determined that this fill is covered
by General Water Quality Certification Number 3404 which can be viewed on our web site at
http://h2o.enr.state.nc.us/ncwetlands. This Certification allows you to use Nationwide Permit Number 14 when
it is issued by the U.S. Army Corps of Engineers. In addition, you should secure any other applicable federal,
state or local permits before you proceed with your project, including (but not limited to) those required by
Sediment and Erosion Control, Non-Discharge, and Water Supply Watershed regulations. Also, this approval
will expire when the accompanying 404 permit expires unless otherwise specified in the General Certification.
This approval is valid only for the purpose and design that you have described in your application. If you
change your project, you must notify us in writing and you may be required to send us a new application for a
new certification. If the property is sold, the new owner must be given a copy of the Certification and approval
letter and is thereby responsible for complying with all conditions. If total wetland fills for this project (now or in
the future) exceed one acre, compensatory mitigation may be required as described in 15A NCAC 2H .0506
(h). For this approval to be valid, you must follow the conditions listed in the attached certification, as
well as the additional conditions listed below:
We understand that you have chosen to contribute to the North Carolina Ecosystem Enhancement
Program (NCEEP) in order to compensate for the impacts to streams. In accordance with 15A NCAC
2R .0402 and 15A NCAC 2B .0242(7), this contribution will satisfy our compensatory mitigation
requirements under 15A NCAC 2H .0506(h) and 15A NCAC 2B .0233(10). Until the NCEEP receives
and clears your check (made payable to: NC DENR Ecosystem Enhancement Program), stream
impacts (including fill) shall not occur. You are required to mitigate for impacts to 178 linear feet of
stream channel. You shall make payment, in the amount determined by the NCEEP, to perform the
restoration of 178 linear feet of warm water stream in the Yadkin River Basin, Cataloging Unit
03040101. You have one month from the date of this Certification to make this payment. Ms. Deborah
Anderson should be contacted at [phone] if you have any questions concerning the Ecosystem
Enhancement Program.
2. The culvert required for this project shall be installed in such a manner that the original stream profile is
not altered (i.e. the depth of the channel must not be reduced by a widening of the streambed). Existing
stream dimensions (including the pattern and profile) are to be maintained above and below the
location of the culvert. The culvert shall be designed and installed to prevent head cutting of the
{Z
IMF
N. C. 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)
[phone] (phone), 919-733-6893 (fax), (http:Hh2o.enr.state.nc.us/ncwetlands)
Customer Service #: 1-877-623-6748
NORTH CAROLINA-DIVISON OF WATER QUALITY
401 WATER QUALITY CERTIFICATION
SUMMARY OF PERMITTED IMPACTS AND MITIGATION REQUIREMENTS
040974
In accordance with 15A NCAC 2H .0500, Winston-Salem/Forsyth County Schools has permission, as outlined
below, to fill 178 linear feet of perennial stream in order to construct an access road for the East Forsyth Middle
School in Forsyth County, North Carolina. All activities associated with this authorized impact must be
conducted with the conditions listed in the attached certification. THIS CERTIFICATION IS NOT VALID
WITHOUT THE ATTACHMENTS.
COMPENSATORY MITIGATION REQUIREMENT
WETLAND RESTORATION PROGRAM
LOCATION: East Forsyth Middle School
COUNTY: Forsyth
BASIN/SUBBASIN Yadkin (03-04-01-01)
Impacts:
178 linear feet of perennial stream
As required by 15A NCAC 2H .0506, and the conditions of this certification, you are required to compensate for
the above impacts through the restoration, creation, enhancement or preservation of wetlands as outlined
below prior to conducting any activities that impact or degrade the waters of the state.
Mitigation:
Compensatory mitigation of 178 linear feet of perennial stream by the North Carolina Ecosystem Enhancement
Program (NCEEP) is required for the 401 Water Quality Certification. In correspondence dated May 26, 2004,
the NCEEP indicated that up to 356 linear feet of stream mitigation will be conducted by NCEEP if necessary
for the 404 Permit.
Note: With regard to payment, linear foot requirements proposed to be mitigated through the North
Carolina Ecosystem Enhancement Program must be rounded to the nearest foot and acreage
requirements must be rounded to one-quarter acre increments according to 15A NCAC 2R .0503(b).
One of the options you have available to satisfy the compensatory mitigation requirements is through the
payment of a fee to the NCEEP per 15A NCAC 2R .0503. If you choose this option, please sign this form and
mail it to the NCEEP at the address listed below. An invoice for the appropriate amount of payment will be
sent to you upon receipt of this form. PLEASE NOTE THAT THE ABOVE IMPACTS ARE NOT AUTHORIZED
UNTIL YOU RECEIVE NOTIFICATION THAT YOUR PAYMENT HAS BEEN PROCESSED BY THE NCEEP.
Signature Date
NORTH CAROLINA ECOSYSTEM ENHANCEMENT PROGRAM
DIVISON OF WATER QUALITY
1619 Mail Service Center
RALEIGH, N.C. 27669-1619
[phone]

North Carolina Wildlife Resources Commission 0
Charles R. Fullwood, F,xecutive Director
MEMORANDUM
TO: John R. Dorney, Division of Water Quality WETLANDS/ 401 GROUP
Dept. of Environment and Natural Resources
JUL ?j y ,zoos
FROM: Ron Linville, Regional Coordinator
Habitat Conservation Program WATER QUALITY SECTION
DATE: July 9, 2004
SUBJECT: Review of an application by Winston-Salem/Forsyth County Schools (WSFCS),
East Forsyth Middle School, Unnamed Tributary of Martin Mill Creek (Class
WS-111), DWQ # 040974, Forsyth County
WSFCS is requesting 401 Water Quality Certification from the North Carolina Division of Water
Quality. The NCWRC has reviewed information provided by the applicant, and field biologists
on our staff are familiar with habitat values of the project area. These comments are provided in
accordance with provisions of the Clean Water Act of 1977 (33 U.S.C. 466 et. seq.) and the Fish
and Wildlife Coordination Act (48 Stat. 401, as amended; 16 U.S.C. 661-667d).
A site visit was conducted on July 8, 2004. The "proposed" school project is already being
developed. Potential site impacts to jurisdictional waters or wetlands are not known by this
agency. The permit requests to impact 178 linear foot of stream for a public road. No listed
species are known for the specific area. The perennial stream in the grubbed and cleared area
appears to have minimal aquatic habitat value although geophysical modification considerations
should be important issues for the water supply watershed and water quality in general.
Based on our review of the project area and the submittal package, we will not object to the
culvert installation providing the following conditions are implemented:
1. Culverts 48 inches diameter or larger should be buried a foot into the streambed.
Culverts less than 48 inches diameter should be buried to a depth equal to or greater
than 20% their size to allow for aquatic life passage. These measurements must be
based on natural thalweg depths.
2. Sediment and erosion control measures should adhere to the design standards for
sensitive watersheds (15A NCAC 4B .0124).
3. To preserve upland habitats and headwaters, the roadway should be located in the
area already grubbed and cleared of trees.
Mailing Address: Division of Inland Fisheries • 1721 Mail Service Center • Raleigh, NC 27699-1721
Telephone: [phone] ext. 281 • Fax: [phone]
East Forsyth Middle School 401 2
July 9, 2004
4. The plans submitted do not indicate any long-term stormwater management.
LEGACY, the long range planning document for development in Forsyth County
indicates that both water quality and water quantity issues should be addressed during
land development. The North Carolina Wildlife Resources Commission routinely
recommends maintaining pre development hydrographic conditions, including stream
base flow recharge regimes. Low Impact Development (LID) techniques are
encouraged. Information on LID practices and measures can be found at
N\ NyN}_loN-,impactcicN clop_nicnt.org. If LID methods are not dispersed throughout the
school yard, existing sediment and erosion control devices should be converted to
stormwater treatment ponds or wetlands to maintain hydrographic conditions within
the receiving basin. Stormwater ponds or wetlands should be vegetated according to
the attached plant recommendations to restore habitat values and reduce thermal
impacts to stormwater releases. Wildlife biologist, David Sawyer can be reached at
336-957-4855. Additional planting suggestions and plant supply sources may be
obtained from Stewardship biologist, Elizabeth Hughes at 828/651-8380.
5. As mitigation for stream and forested area impacts, undisturbed naturally forested
buffers (minimum 100' perennial streams and minimum 50' intermittent streams)
should be permanently preserved through decd restrictions or other enforceable
covenants for water quality, aquatic and terrestrial habitat benefits, and for natural
resource education purposes.
These recormmendations should help offset lost or impacted environmental values. Secondary
and cumulative impacts (SCI) and mitigation considerations are discussed at our website:
http://N\v,___ __ildlifc org/pg<f7_ W ildl fcS_pc cics(;_pn/ , c ? impacts.t?(11'. We recommend
project proponents visit of these websites and consider these activities for this and future projects.
Project planning staff should consider the recommendations presented therein as they benefit
environmental quality. We are informed that LIDS are less expensive and more land use efficient
and safer than typical stormwater ponds. LIDS are also indicated to provide improved water
quality as well as mimic natural stream recharge which is important to stream stabilization and
aquatic habitat downstream.
Thank- you for the opportunity to review and comment on this 401 Certification. If you have any
questions regarding these comments, please contact me at 336-769-9453.
Attachments: Piedmont Stormwater Pond and Mine Planting Recommendations
NCWRC Fact Sheet
Cc: Andrea Wade, COE
Jim Moorefield, WSFCS
East Forsyth Middle School 401 3 July 9, 2004
Piedmont Stormwater Pond and Mine Planting Recommendations
Instead of using the typical fescue grasses or exotic plant species, the following mixtures should
be considered for lower elevation stormwater ponds and mine sites:
Spring/Summer Mixture, May 1 - Sept. 15 Fall/Winter Mixture, Sept. 15 - April 30
Browntop millet 20 lbs/a Winter Wheat 120 lbs/a
Kobe lespedeza 20 Ibs/a Kobe lespedeza 20 lbs/a
Shrub lespedeza 1 lb/a Shrub lespedeza l lb/a
Switchgrass* 5lb/a Switchgrass* 5lb/ac
Add to fall or spring plantings: `Tioga' Deertongue (Panicum clandestinum) at a rate of 7 lbs.
Pure Live Seeds (PLS) per acre.
* When possible on slopes less than 3:1 use Switchgrass instead of lespedezas and on slopes greater than
3:1 use Orchard Grass or Creeping Red Fescue. Other native species may be appropriate depending on
soil, slope, and region. Korean lespedeza may be appropriate in colder geophysical areas. We do not
recommend Sericea lespedeza. Native plants and warm season grasses are preferred over exotic plants.
Add one of the following to the above mixture:
Creeping Red Fescue 5 lbs/acre
Ladino Clover** 5 lbs/acre
Atlantic Coastal Panic Grass 5 lbs/acre (PLS)
Alfalfa** 5 lbs/acre (requires fertilizer containing Boron)
** Lime & fertilize disturbed areas according to NRCS soil test results and follow planting guidelines as
appropriate and necessary. Depending on elevation and region, other native species may be appropriate.
Note that mowing should be limited to late winter or early spring. Mowing should only occur as needed to
prevent unwanted tree growth on a 2-3 year schedule.
The provision of shade around impounded waters can significantly reduce thermal impacts. Trees
and shrubs (1 year bare root seedlings) should be planted randomly 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
around 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 Gum American Holly Dogwood
Hickory Sumac White Oak Willow Oak Red Maple**
Viburnum Green Ash Ironwood Black Cherry Persimmon
Water Oak Spice Bush Willow (sp) Serviceberry Red Oak
Swamp Chestnut Silky Dogwood
Other species may be utilized depending on site requirements and native plant availability. Pines* should
not exceed 15% of the reforestation. No more than 20% of the tree species will be of a single species. An
80% success rate is acceptable over five years. Large or fast growing trees like Sycamore and Maple**
may not be appropriate near detention facility dams. Note: Non-native plants included in this list are
routinely considered beneficial and/or agriculturally established non-natives. They have been included as
they are readily available commercially and they do not exhibit many of the negative attributes of other
non-natives that tend to spread or inhibit native plant propagation and survival.
32
Fisheries Research Fact Sheet - Media Day 2004
What: Low Impact Development Methodologies to Mitigate for Fish and Wildlife Habitat Loss Due to
Increased Development. Increased population and development impacts are causing unmitigated loss of stream
headwaters and forested ecosystems through "site-stripping" practices that pipe and pave geologically and
biologically functioning ecosystems without consideration of direct and indirect impacts to our environment.
How: Site-based planning solutions, like Low Impact Development methodologies, must be evaluated fully
before local land use and zoning approval as well as before land clearing occurs. Low Impact Development
measures begin with identifying sensitive areas in a proposed development. These areas include highly erodable
areas, streams, stream buffers (riparian areas), and floodplains. Development on the remaining acreage includes
installing dispersed landscape features that minimize changes in stormwater runoff conditions. Grassed
drainage swells, pervious parking lots, and rain gardens are examples of Low Impact Development features.
Where: Development impacts are occurring throughout North Carolina at unprecedented rates. These impacts
are being felt not only around urbanized areas where air and water quality issues already exist due to "sprawl"
but in mountainous and rural areas at the headwaters of pristine streams.
When: Due to an approximate 20 percent increase in population over the last decade, creative and
environmentally sound solutions are needed now to balance development impacts and preserve environmental
quality for future generations.
Why: Conservation development measures like Low Impact Development are essential for the preservation of
the environment that we depend on for our survival and quality of life. Preserved sensitive and woodland areas
provide wildlife habitats, aesthetic green spaces and provide noise and visual buffers between developments.
Low Impact Development landscaping provides stormwater filtration and storage that reduce stormwater
impacts to aquatic communities. Preserved sensitive areas in conjunction with Low Impact Development
landscape features help maintain local air and water quality as well as increase property values. They provide
backyard opportunities for our citizens to commune with the natural world without driving to a distant nature
preserve. By providing these functional habitats and wildlife friendly landscape features, we contribute to
wildlife diversity. This biodiversity is an indicator of the health of the land and the environment that supports us
all.
Related websites:
Low Impact Development Center at www.loNvimpactdevclopment.org
American Rivers at http://NyNVNv.americanrivers.org/
The Scientific Imperative for Defending Small Streams and Wetlands at
http://wwNN-.amrivers.org/doc repository/WhereRiversAreBornl.pdf
Better Site Design (Center for Watershed Protection) at http://N\w\v.cwp.org/
American Forests at http://www.americanforests.org/
Smart Growth America at http://www.smartgrowthamerica.or 7 sprawlindex/sprawlindex.litml
North Carolina Smart Growth Alliance at http//www.ncsmartgrowth.orr*/
NCSU Water Quality Group at http:/hvww-.bae.ncsu.edu/bae/provrams/extension/wq#)/
N.C. Wildlife Resources Commission Division of ntand Fist ed#
N.C. Wildlife Resources Commission Contacts:
Bennett Wynne, Southeastern permit coordinator.
Phone: [phone]; E-mail: [e-mail]
Daniel Pender, Triangle/special projects coordinator
Phone: [phone]; E-mail: [e-mail]
Dave McHenry, Northeastern permit coordinator.
Phone: [phone] ext. 24; E-mail: [e-mail]
Maria Tripp, Northeastern permit coordinator
Phone: [phone] ext. 345; E-mail: [e-mail]
Ron Linville, Western Piedmont permit coordinator
Phone: [phone]; E-mail: [e-mail]
Shari Bryant, Eastern Piedmont permit coordinator
Phone: [phone]; E-mail: [e-mail]
ja
I i + 2
41t

A site showing removal of agricultural fields and forested areas for urban housing.
N.C. Wildlife Resources Commission
Division of Inland Fisheries
An example of stream destabilization due to urban impacts upstream
MEMORANDUM
TO: John Dorney Regional Contact: Daryl Lamb
Non-Discharge Branch WO Supervisor: Steve Tedder
Date:
SUBJECT: WETLAND STAFF REPORT AND RECOMMENDATIONS
Facility Name East Forsyth Middle School
Project Number 04 0974
Recvd From APP
Received Date 6/16/04 Recvd By Region
Project Type road crossing
County Forsyth
County2
Region Winston-Salem
Certificates Stream Stream Impacts (ft.)
Permit Wetland Wetland Wetland Stream Class Acres Feet
Type Type Impact Score Index Prim. Supp. Basin Req. Req. ME
F 14 Stream P7 _@N F_ 12-94-12-3 WSIII F__30,704. F_- 178.00 178.00
r-F- ON F .1
Mitigation Wetland
MitigationType Type Acres Feet
Stream WRP F_ F_- 178.00
Is Wetland Rating Sheet Attached? #Y ON Did you, request more info? O Y ON
Have Project Changes/Conditions Been Discussed With Applicant? Q Y O N
Is Mitigation required?O Y O N Recommendation: O Issue0 Issue/fond O Deny
Provided by Region: Latitude (ddmmss) 360800
Longitude (ddmmss) 800730
Comments:
Site visit made on 03/31/2004, Site is 40 acres in size. An existing elementary school is located
adjacent to the northeast area of the site. The surrounding area is largely residential with some
forested land. At the time of the site visit,. initial clearing and grading of the upland portion of the site
had been completed. The proposed impact consists of a roadway culvert on a perennial unnamed
to Martin Mill Creek. No other impacts are imposed. This roadway will serve as the access
road to the middle school and will loop from Pisgah Church Road (SR 2410) to NC Highway 66 (Old
Hollow Road). This roadway will be constructed to NCDOT standards. The culvert will consist of two
parallel sections of RCP 125 feet long. One sections of RCP will be 36" in diameter and will convey
the stream under normal flow conditions. This 36" RCP will have an invert of - 12" below the
eAsiting streambed. The second section will be 54" in diameter with an invert at the level of the
existing stream bed. This Mine is designed to convey flood flows. A age pool 53 feet long will be
installed at the outlet end of the culvert to provide scour protection,
cc: Regional Office
Central Office Page Number 1
Facility Name East Forsyth Middle School County Forsyth
Project Number 04 0974 Regional Contact: Daryl Lamb
Date: 7/27/2004
Comments (continued from page 1):
This age pool will be constructed of Class 1 rip underlain by filter fabric. Detailed engineering
drawings and calculations were provided with the PCN. To minimize the extent of impact, fill slopes
have been steepend to 3:1, and endwalls will be used to minimize slope length. The t?o?t?a/lam palpos A
stream impact for this culvert is 178 If. Stream mitigation is required and will be met by ment into
the NCEEP. There are no wetland impacts associated with installation of the culvert. The wetland
rating sheet indicates that the areas outside the stream are uplands. Since Martin Mill Creek is
classified WS-III, this stream also has a WS-III classification . The buffer impacts associated with this
rc ossing are allowable under 2B .0215 (3)(bb)(H). Applicant has made an acceptable effort to avoid
and minimize impacts. Total impervious area at buildout is projected to be - 8.2 acres. which is 20.5%
of total site area. Sewer service will be provided by the county. WSRO will issue authorization to use
WOC# 3404 with additional conditions,
cc: Regional Office
Central Office Page Number 2
Triage Check List
Z (
Date. Project Name:
? / f q
DW
County:
To: ? ARO Mike Parker ? WaRO Tom Steffens
? FRO Ken Averitte ? WiRO Noelle Lutheran

? MRO Alan Johnson KZRO Daryl Lamb
? RRO Steve Mitchell
From: Telephone : (919) 33 Wtf4

The file attached is being forwarded to your for your evaluation.
Please call if you need assistance.
? Stream length impacted
? Stream determination
? Wetland determination and distance to blue-line surface waters on USFW topo maps
Minimization/avoidance issues
Buffer Rules (Neuse, Tar-Pamlico, Catawba, Randleman)
? Pond fill
? Mitigation Ratios
? Ditching
? Are the stream and or wetland mitigation sites available and viable?
? Check drawings for accuracy
? Is the application consistent with pre-application meetings?
? Cumulative impact concern
Comments:
av

1
0? 5)ye
Office Use Only: Fonn Version May 2002
USACE Action ID No. DWQ No.
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
I. Processing
1. Check all of the approval (s) requested for this project:
® Section 404 Permit ? Riparian or Watershed Buffer Rules
? Section 10 Permit ? Isolated Wetland Permit from DWQ
® 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: 14
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 (verify availability with NCWRP prior to submittal of PCN), complete
section VIII and check here:
If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ?
II. Applicant Information
WENNOSImi GR4l/P
Owner/Applicant Information
Name: Winston-Salem/Fors th Count Schools
Mailing Address: Attention: Mr. Jim Moorefield 04
Post Office Box 2513 WA7Po n.,..._
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: imoorefi(a-),wsfcs.kl2.nc.us
Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.) WETL4
Name: Mr. Christopher W. Hay, E.I. I GROUP
Company Affiliation: Trion Engineering Consultants Inc.
Mailing Address: Post Office Box 18846 Y R 2004
313 Gallimore Dairy Road 1AJ-
North Carolina 27419-8846
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: chay0rc ,trigoneng.com

Page 5 of 13
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: East Forsyth Middle School
2. T.I.P. Project Number or State Project Number (NCDOT Only)
3. Property Identification Number (Tax PIN)
NA
6867717149 and 6866695653
4. Location
County: Forsyth Nearest Town: Walkertown
Subdivision name (include phase/lot number):
Directions to site (include road numbers, landmarks, etc.): From Business Highway 40, exit
at Main Street in Kernersville. Turn on Main Street heading east. Turn left on Old Winston
Road. Turn right on Hopkins Road. At the intersection with West Mountain Street, turn left.
Turn right on Pisgah Church Road and take the first right on Aviary Court to the construction
entrance on the right. A site vicinity map is located in the upper right-hand corner of Plan
Sheet No. 1. USGS and soil survey maps are also attached.
5. Site coordinates, if available (UTM or Lat/Long): 36° 08' 00" N, 80° 07' 30" W
(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. Property size (acres): 40.0 acres
7. Nearest body of water (stream/river/sound/ocean/lake): Martin Mill Creek is located
approximately 500 feet west of the stream crossing.
8. River Basin: Yadkin
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at littp://h2o.enr.state.ne.us/admin/i-naps!.)
Page 6 of 13
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: The site consists of two wooded lots, cleared locations for
roads and buildings and a temporary construction crossing. The general land use in the
vicinity is primarily residential. An existing elementary school is located at the northeast
extent of the project site on Hwy 66.
10. Describe the overall project in detail, including the type of equipment to be used: The
project will include the construction of a new middle school, parking and bus loading areas
ball fields, 400 meter track, and soccer fields. The entrance driveway will cross a small
stream channel. The stream channel crossing will have end walls and 3:1 fill slopes to the
roadway. One 36 inch reinforced concrete pipe will be installed approximately one foot
below the existing stream bed, and a second pipe (54 inch reinforced concrete) will be raised
for additional flow outside the existing stream banks. A plunge pool will be constructed of
rip rap at the exit of the pipes. Excavation will require the use of a trackhoe for placing
construction materials. Fill materials will primarily be placed using a bulldozer. The project
is shown on Plan Sheet No. 1 excluding the existing Cash Elementary School. Details and
design calculations for the stream crossing are also attached.
11. Explain the purpose of the proposed work: To provide access to the new school site for
employees, students, parents, and school buses, a roadway designed to NCDOT standards
will be constructed.
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.
No pen-nits or jurisdictional determinations have previously been requested for this property.
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
No future permit requests are anticipated for this project.
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
Page 7 of 13
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
1. Provide a written description of the proposed impacts: Stream impacts will include the
installation of a permanent roadway crossing and associated fill slopes. In addition, a plunge
pool will be constructed at the exit of the piping (described above). Design drawings and site
survey plans of the stream crossing are attached. Specifically, the pipe lengths from endwall to
endwall are 125 feet. The length of the plunge pool is 53 feet. No wetland impacts are
associated with the project. A Wetland Data Form is attached indicating that the area outside the
stream banks is uplands.
2. Individually list wetland impacts below:
Wetland Impact
Site Number
(indicate on ma)
Type of Impact* Area of
Impact
(acres) Located within
100-year Floodplain**
(es/no) Distance to
Nearest Stream
(linear feet)
Type of Wetland***
NA

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, till,
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 tloodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http:iiww?,v.fema.LOV.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only).
List the total acreage (estimated) of all existing wetlands on the property: NA
Total area of wetland impact proposed: NA
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact
Site Number
(indicate on ma)
Type of Impact* Length of
Impact
(linear feet)
Stream Name** Average Width
of Stream
Before Impact Perennial or
Intermittent'?
(please seci )
Stream Crossing Road Crossing 178 UT Martin Mill Creek <5 feet Perennial

Page 8 of 13
* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
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 arc available through the USGS at 1-800-358-9616, or online at
u,??w a ,??s, w Several internet sites also allow direct download and printing of USGS maps (c g., "w.? topozonc corn,
www.nui )L uestcom, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 178 feet
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.) below:
Open Water Impact
Site Number
(indicate on ma)
Type of Impact* Area of
Impact
(acres)
(if Name applicable) Type of Waterbody
(lake' pand estuary' sound,
bay, ocean, etc.)
NA

* List each impact separately and identify temporary impacts. Impacts include, but arc not limited to: fill, excavation, dredging,
flooding, drainage, bulkheads, etc.
5. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ? uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.):
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.):
Size of watershed draining to pond: Expected pond surface area:
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.
Access to the site is only available from Hiuhwav 66. A residential subdivision is located on
the west side of the property, which does not have adequate access for the school. Minimum
grades have to be maintained according to NCDOT specifications, however, the fill slopes have
Page 9 of 13
been steepened to 3:1 and endwalls will be constructed to minimize the length of the fill slopes.
The fill slopes are a result of the existing topography at the site. Stream impacts have been
reduced from the original stream crossing design which included over 200 feet of impacted
stream channel. Construction should be scheduled for summer when the water levels will be at a
seasonal low. Construction equipment should remain outside the stream channel and measures
should be taken to maintain stability of the stream banks. Facilities should be placed to
minimize erosion and addition of sediment to the stream during and after construction.
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
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
htti):/"/'h2o.enr.state.nc.us,'ncwetlands/strmgide.html.
Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
A letter from NCWRP is attached indicating they have the capacity to provide mitigation
for this project.
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at
[phone] to determine availability and to request written approval of mitigation prior
Page 10 of 13
to submittal of a PCN. For additional information regarding the application process for the
NCWRP, check the NCWRP website at http Jh20.enr.statc.ne.us/wrp/index.htm. If use of
the NCWRP is proposed, please check the appropriate box on page three and provide the
following information:
Amount of stream mitigation requested (linear feet): 178
Amount of buffer mitigation requested (square feet): 0
Amount of Riparian wetland mitigation requested (acres): 0
Amount of Non-riparian wetland mitigation requested (acres):
Amount of Coastal wetland mitigation requested (acres): 0
IX. Environmental Documentation (required by DWQ)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes ® No ?
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No ?
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
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
(Neuse), 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.
Page I I of 13
Zone* Impact
(square feet) Multiplier Required
Mitigation
1 0 3 0
2 0 1.5 0
Total 0 0
* Zone I extends out 30 feet perpendicular from near bank of channel; Zone 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.
NA
XI. Stormwater (required by DWQ)
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.
The site was wooded and did not include anv impervious surfaces. The 40-acre site will include
approximately 120,000 square feet of asphalt roadway, 120,000 square feet of driveway and
parking areas, and 100,000 square feet of impervious area under roof. A total of approximately
8.2 acres of impervious surface are proposed. Grass and rip rap lined drainage channels will
direct stormwater off-site. Four temporary sediment traps will be constructed prior to grading
the site. Diversion berms will be placed to direct stormwater to slope drains.
XII. Sewage Disposal (required by DWQ)
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.
Wastewater will be discharged to the sanitary sewer and treated at the nearest sewage disposal
facility in Kernersville, North Carolina - 2t miles east of the site.
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
Page 12 of 13
ANSITION TO NATURAL
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DESIGN CALCULATIONS
for
East Forsyth Middle School
Forsyth County, NC
Owner/Developer:
Winston-Salem/Forsyth County
Board of Education
1605 Miller Street
Winston-Salem, NC 27103
[phone]
Prepared by:
CivilDesigns, P.A.
3817-C Lawndale Drive
Greensboro, NC 27455
[phone]
Project No. 02600
May 4, 2004

CivilDesigns, P.A.
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For overland flow, concrete or asphalt surfaces, multiply Tc by 0.4.
For concrete channels, multiply Tc by 0.2.
Figure 8.03a Time of concentration of small drainage basins.
05'e
LO 8.03.4

CITY OF GREENSBORO STORM SEWER DESIGN MANUAL
Storm Sewer Design Rainfall & Runoff Chart for Greensboro, NC
25-year Return Period

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Jan-98 Page 12
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Table 8.03a
Value of Runoff Coefficient
(C) for Rational Formula
Land Use C Land Use C
Business: Lawns:
Downtown areas 0.70-0.95 Sandy soil, flat, 2% 0.05-0.10
Neighborhood areas 0.50-0.70 Sandy soil, ave., 2-7% 0.10-0.15
Sandy soil, steep, 7% 0.15-0.20
R Heavy soil, flat, 2% 0.13-0.17
Heavy soil, ave., 2-7% 0.18-0.22
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0
.40
-
0.
60
Heavy soil, steep, 7%
0.25-0.35
Multi units, attached tthed
0
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60-
0
.75
Suburban 0.25-0.40 Agricultural land:
Bare packed soil
Industrial: Smooth 0.30-0.60
Light areas 0.50-0.80 Rough 0.20-0.50
Heavy areas 0.60-0.90 Cultivated rows
Heavy soil no crop 0.30-0.60
Parks, cemeteries 0.10-0.25 Heavy soil with crop 0.20-0.50
Sandy soil no crop 0.20-0.40
Playgrounds 0.20-0.35 Sandy soil with crop 0.10-0.25
Pasture
Railroad yard areas 0.20-0.40 Heavy soil 0.15-0.45
Sand 0.05-0.25
Unimproved areas 0.10-0.30 00 lands 0.05-0.
Streets:
Asphalt 0.70-0.95
Concrete 0.80-0.95
Brick 0.70-0.85
Drives and walks 0.75-0.85
Roofs 0.75-0.85
NOTE: The designer must use judg ment to select the appropriate C value
within the range for the appropriate land use. Generally, larger areas with
permeable soils, flat slopes, and dense vegetation should have lowest C
values. Smaller areas with slowly permeable soils, steep sl opes, and
sparse vegetation should be assigned highest C values.
Source: American Society of Civil Engineers
The overland flow portion of flow time may be determined from Figure 8.03a.
The flow time (in minutes) in the channel can be estimated by calculating the
average velocity in feet per minute and dividing the length (in feet) by the
average velocity.
Step 4. Determine the rainfall intensity, frequency, and duration (Figures 8.03b
through 8.038-source: North Carolina State Highway Commission; Jan.
1973). Select the chart for the locality closest to your location. Enter the
"duration" axis of the chart with the calculated time of concentration, Tc. Move
vertically until you intersect the curve of the appropriate design storm, then
move horizontally to read the rainfall intensity factor, i, in inches per hour.
Step S. Determine peak discharge, Q (f?/sec), by multiplying the previously
determined factors using the rational formula (Sample Problem 8.03a).
8.03.2
rLQJGR POOL DESIGN
Items to llnd/determdae:
I. Pipe outlet velocity (Y)
2. Fronde ntunber (Fr)
3. Brink depth (supercritical flow depth) (Ye)
4. d30 size for rip-rap (d50)
a". Busin depth (hs) [Use Pigure XI-2]
6. Pool length (Lp)
7. Apron length (La)
S. Pool width (Wp)
Formulas-
Fr - (Vu ((32:2)*(Ye))°-' ye - (A/2) Ms
Symbols:
Wo - Pipa diameter 4 = Brink (supercritical) flow area [u•ea of pilne uriii:.QJ
Basle design criteris:
Minimum Lp - 1Qhs or Wo
Mtimmum TA - SU or W'o
Wp R flares out at a 3:I side angle from pipe outlet
Side slopes or the basin are on a 2:1 angle
Standard for depth and stone size relationship 2 <hs/00 c 4
R.ip-rmp thickness = 3d50 at pipe outlet and 2d50 over the rest of the plunge pool
Fronde number must be less then 3 to operate correctly. if the Froude number is
over 3 then a plunge pool will not work in the situation.
Tn brmLtion taken from HYDRA ULICSDE=N OFENERGY DIS'SIP4TORS FOIL
CULVERTS AND CHAAWELS by the USDOT (Circular No. 7 a Sept. 1953)
04/01 /dOU15 '!c' - Sy bU 1 LV I NU 1 MWtl. I 1 UN!..) -0 t$dWd Vd NU. 7 (7 V1)J
DENt Winston-Salem Fax:[phone] Sep 12 '02 8:54 P,07
CULVEERT BRINK
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? aio TOM OOWNSTRI!AM
FROM SASIN - SES QESIGN
O EXAMPLE IN TEXT.

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DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project Site: East Forsyth Middle School Date: 4/30/04
Applicant/Owner: Winston-Salem/Forsyth County Schools County: Forsyth
Investigator: Chris Hay, Trigon Engineering Consultants, Inc. State: North Carolina

Do Normal Circumstances exist on the site? Yes No' Community ID: Walkertown NC
Is the site significantly disturbed (Atypical Situation)? No Transect ID: Cr Martin Mill
Creek
Is the area a potential Problem Area? Yes ?N Plot ID: 6867717149 and
(If needed, explain on reverse.) 6866695653
fill materials
for
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1.Yellow Poplar
Tree
FACU 9.Common Milkweed
Herb FAC
"Liriodendron tulipifera" "Asclepias syriaca"
2.Red Maple "Acer Tree FAC 10.
rubrum"
3.Virginia Pine "Pins Tree FACU 11.
taeda"
4.Privet "Ligustrum Shrub FACU 12.
vulgare"
5.Oriental Bittersweet Shrub UPI, 13.
"Celastrus orbiculata"
6.Ryegrass "Lolium Herb FACU 14.
perenne"
7.Southern Maidenhair
Fern "Adiantum capillus- Herb FACU 15.
veneris"
8.Chickweed "Stellaria Herb UPI, 16.
media"
Percent of Dominant Species that are OBL, FACW, or FAC
(excluding FAC-). 2/9 = 22 %
Remarks:
Vegetation based on areas adjacent to cleared road crossing.
HYDROLOGY
Recorded Data (Describe in Remarks):
Stream, Lake, or Tide Gauge
Aerial Photographs
Other
X No Recorded Data Available Wetland Hydrology Indicators:
Primary Indicators:
Inundated
Saturated in Upper 12 Inches
Water Marks
Drift Lines
Field Observations: Sediment Deposits
Drainage Patterns in Wetlands
Depth of Surface Water: None (in.)
Secondary Indicators (2 or more required):
Depth to Free Water in Pit: >24 (in.) Oxidized Root Channels in Upper 12 Inches
Water-Stained Leaves
Depth to Saturated Soil: >24 (in.) Local Soil Survey Data
FAC-Neutral Test
Other (Explain in Remarks)
Remarks:
Wetland hydrology is not resent outside the stream banks of the unnamed tribut to Martin Mill Creek
SOILS
Map Unit Name Pacolet clay loam
(Series and Phase): Drainage Class: Well drained
Taxonomy (Subgroup): Typic Hapludults Field Observations Yes ©o
Confirmed Mapped Type?
Profile
Description:
Depth Matrix Color
Horizon Mottle Colors Mottle Texture,
Concretions
ches
(m) (Mansell Moist)
(Mansell Moist) Abundance/Contrast ,
Structure, etc.
3-6 A 10 YR 4/4 NA None/NA granular
24 B 2.5 Y 5/4 10 YR 5/6 Few/weak granular
>24 C 2.5 Y 4/2 7.5 YR 4/6 Abundant/strong Blocky
Hydric Soil Indicators:
Histosol Concretions
Histic Epipedon High Organic Content in Surface Layer in Sandy Soils
Sulfidic Odor Organic Streaking in Sandy Soils
Aquic Moisture Regime Listed on Local Hydric Soils List
Reducing Conditions Listed on National Hydric Soils List
Gleyed or Low-Chroma Colors Other (Explain in Remarks)
Remarks:
Indications of hydric soil at this location not observed.
WFT1r.ANn nF.TFRMTNATTON
Hydrophytic Vegetation Present? Yes (Circle) (Circle)
Wetland Hydrology Present? Yes
Hydric Soils Present? Yes ' Is this Sampling Point Within a Wetland? Yes N
Remarks:
The area adjacent to the unnamed tributary to Martin Mill Creek, represented in this form, has characteristics of upland vegetation, hydrology,
and soil.
Approved by HQUSACE 2/92
LT OMA
A I
m a.
NGDENR
North Carolina Department of Environment and Natural F?esources
Michael F. Easley, Governor
William U. Ross Jr.. "Secretary
May 26, 2004
Christopher Hay, El
Trigon Engineering Consultants, Inc.
P.O. Box 18846
Greensboro, NC 27419-8846
Subject Project: East Forsyth Middle School
County: Forsyth
The purpose of this letter is to notify you that the North Carolina Ecosystem Enhancement Program (NCEEP) is willing to
accept payment for stream impacts associated with the subject project. Please note that the decision by the NCEEP to
accept the mitigation requirements of this project does not assure that this payment will be approved by the U.S. Army
Corps of Engineers and the N.C. Division of Water Quality Wetlands/401 Unit. It is the responsibility of the applicant to
contact these agencies to determine if payment to the NCEEP for impacts associated with this project is appropriate.
This acceptance is valid for six months from the date of this letter. If we have not received a copy of the issued 404
Permit/401 Certification within this time frame, this acceptance will expire.
Based on the information supplied by you in a letter dated May 11, 2004 the stream restoration that is necessary to satisfy
the compensatory mitigation requirements for this project is summarized in the following table. The maximum amount of
miti ation that the NCEEP will accept for this project is also indicated in this table. arian Buffer
Stream T Wetlands Riparian RiP
(linear feet) (acres) (ft)
LImpacts 178
Mitigation Maximum 356 ^^^ Permit for
The stream mitigation will be provided as specified in the 401 water duality Certification and/or Section
impacts associated with the subject project in Cataloging Unit 03040101 of the Yadkin River Basin. The mitigation will
be performed in accordance with the Memorandum of Understanding between the N.C. Department of Environment and
Natural Resources and the U.S. Army Corps of Engineers dated November 4, 1998.
If you have any questions or need additional information, please contact Carol Shaw at [phone].
Sincerely,
Deborah D. Anderson
In-Lieu-Fee Administrator
cc: Cyndi Karoly, Wetlands/401 Unit
Andrea Wade, USACOE-Raleigh
Darryl Lamb, DENR Regional Office-Winston-Salem
File
NC DENR Ecosystem Enhancement Program One
NorthCarolina
1019 Mail Service Center. Raleigh, North Carolina 27699-1619 Uturally
Phone: [phone] ; FAX: [phone] i Internet: h2o.enr.state,nc.us, yvrpi

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_ 3817-C lawndale Drive
Revision Desonpt(on By Date I We CivilDesigns, P.A. Greensboro, NC. 11455
Designed By. K.BRODERICK DrewnBY: D.RUSSELL Checked Sr K.BRODERICK Phone; 282-5542 EAST F RS YTH MIDDLE SCHOOL (336) ' I C
Scale: SHOWN Data: 5/3/04 Pmjod# 02601
7 1 K Consulting Civil and Environmental Engineering Fax. [phone] Of