20041069 Ver 1_COMPLETE FILE_20040630

O?O? W AT ?9QG
I FVA

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
May 23, 2005
DWQ Project # 04-1069
Guilford County
Mr. Wiley A. Sykes, Jr.
Willow Oak Partners, Inc
405-D Parkway
Greensboro, NC.27404
Subject Property: Tyson Place Subdivision, Greensboro, NC
APPROVAL OF STORMWATER MANAGEMENT PLAN
Dear Mr. Sykes:
On March 22, 2005, the Division of Water Quality (DWQ) received the revised storm water management
plan prepared by your engineer, Mr. Mike Otto, of Borum, Wade & Assoc., P. A. This Plan has been
reviewed and satisfies the storm water management conditions of the 401 Water Quality Certification
issued on August 13, 2004.
The structural storm water practices as approved by DWQ as well as drainage patterns must be
maintained in perpetuity. No changes to the structural storm water practices shall be made without
written authorization from the Division of Water Quality. Storm water easements shall be recorded for a
distance of at least 10 feet on each side of all storm water conveyances on all lots containing these
structures including future access for maintenance. The storm water easements shall allow for the ability
to maintain the structures, perform corrective actions as described above and shall provide protection of
the structures from potential alternations by future property owners.
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 Mr. Samuel A. Aghimien at 919-733-3574.
Sincerely,
C di B. Karoly
DWQ, 401 Oversight/Express Permitting Unit
CBK/SAA
cc: DWQ Winston - Salem Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Central Files
Homer S. Wade, Borum, Wade & Assoc., P.A. 405-D Parkway, Greensboro, NC. 27404
Mike Otto, Borum, Wade & Assoc, 621 Eugene Court, Suite #100-C, Greensboro, NC. 27401
Filename: 04-1069 Stormwater Approval Tyson Place Sub, 5-17-05
,One,
aw w?..m uua,u
401 Oversight/Express Review Permitting Unit /lflrrll!!J
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] / FAX [phone] / Internet h?:',h2o.enr.state.nc.us•'ncw,etlands
An Equal Opportunity/Affirmative Action Employer- 50% Recycled/10% Post Consumer Paper

Project Name: Tyson Place
Project No. DWQ 04-1069
Pond No.
SUBMITTED DESIGN. 1 REQUIRED DESIGN.-
5/12/2005
elevations 3.4average depth status
Bottom of Basin (ft) 803
Permanent Pool (ft) 808 5 ft. depth ok
Temporary Pool (ft) 810.5 2.5 ft. depth ok

areas
Permanent Pool SA (sq ft) 6625 6371 sq. ft. ok
Drainage Area (ac) 11.5 _ 6015 based on avg depth ok
Impervious Area (ac) 4.7 40.9 % -
volumes
Permanent Pool (cu ft) 22792
Temporary Pool (cu ft) 19608 17442 cu. ft. ok
Forebay (cu ft) 4894 21.5 % ok
other parameters
SA/DA 1.275 1.27 -
Orifice Diameter (in) 1.375 0.06 cfs drawdown -
Design Rainfall (in) 1 4.1 day drawdown ok
Linear Interpolation of Correct SAIDA * * *
5 ft. Permanent Pool Depth
% Impervious SA/DA fron (Avg. Depth)
Next Lowest 40 1.25 1.175148679 1.08
Project Impervious 40.9 1.27 1.20 1.11
Next Highest 50 1.5 1.469178868 1.43
3 ft 4

V
X
L 9?,11?I06
" ? 05/1212005 17:11 3362753713 FORUM WADE AHD ASSOC PAGE 01
Rorum, Wadc anti Associates, P.A.
l
May 12, 2005
Mr. Samuel Aghimien
NC Department of Environment and Natural Resources
Division of Water Quality
Wetlands 401 Unit
1650 Mail Service Center
Raleigh, N.C. 27699-1650
Phone: [phone]
Fax: [phone]
Re: Tyson Place - Greensboro, N. C.
DWQ Project No. 04-1069
Samuel:
Per our telephone conversation of today, May 21, 2005, the PCN for the above referenced
project submitted by Chris Huysman of Wetland and Natural Resource Consultants, Inc.,
apparently had an incorrect site area stated. The correct site area is 15.7± acres of
which 2.01 were unusable because of buffers and steep slopes.
If you have any other questions please feel free to give me a call.
Sincerely:

AA*
Mike Otto
Borum, Wade & Assoc., P.A.

621 Eagcnc Court, Sui:c IOD, Crcr.ndioro, NC 27401.2711
FO Box 21882, Grccn4boto, NC 27423-1,982
HAY-12-2005 THU 15:41 TEL:919733G893 HA1•IE:DWQ-WETLANDS
P: 1
Na 4 r 22 05 12:33p Borum, Wade and Assoc. 336-275-3719 p.l
Bormn, Wade and Associates, P.A.
March 22, 2005
Mr. Samuel Aghimien
NC Department of Environment and Natural Resources
Division of Water Quality
Wetlands 401 Unit
1650 Mail Service Center
Raleigh, N.C. 27699-1650
Phone: [phone]
Fax: [phone]
Re: Tyson Place - Greensboro, N. C.
DWQ Project No. 04-1069
Samuel:
Per our telephone conversation of yesterday, March 21, 2005, please see the attached
revised 401 Wet Detention Basin Worksheet, revised Wet Detention Basin Operation and
Maintenance Agreement, revised pond plan and section showing the pond bottom
elevation at 803.
As we discussed, the total site area is 15.69 acres while the drainage area to the
retention pond (containing all proposed built upon areas) is 11.5 acres. The remaining
acreage not draining to the pond is to be platted and recorded as Water Quality
Conservation Easement with no additional built upon area allowed.
With respect to the question of the wet detention pond basin having a 3:1 length to width
ratio, the basin is as close to this configuration as feasibly possible given site and grade
constraints.
Hopefully, these responses satisfy your concerns and if you have any other questions
please feel free to give me a call.
Sincerely:
Mike Otto
Borum, Wade & Assoc., P.A.
621 Euficnc Court, Suite 100, Grcen4mro, NC 27401-2711
PO Box 2152, Creensbo:o, NC 274_'0.1532
Phone: [phone] Fax: [phone] NVJc : %,%,x.Forum•%eade.eom
HAR-22-2005 TUE 12:05 TEL: 91973:3659,3 NAME: DWQ-1,IETLANDS P'. 1
Mar 22 05 12:33p Borum, Wade and Assoc. 33G-275-3719
f
Project NO. DWCI_ 4- b4-1 c?D_9 (Io be provided by DWO)
DIVISION OF WATER QUALITY - 401 WET DETENTION BASIN WORKSHEET
DWO Starmwater Man:xtrmcnl Plan Review,
p.2
1. PROJECT INFORMATION (please complete the following information):
Prcjcct Palle : 04J _QI.i;G?
Contact Person: Phone Number. (3'?L>1
For prolcctJ vrltli multiple basins, spucify viliich basin this workshecl a pplies to.
Casin L'ollum Elevation 0603, 0 IL (average elevation of llic floor of the basin)
Permanent Pool Elavation
Temporary Pool Elevation -8-?0- It.
01 5 it. (elevation of the orifice invert out)
(ClUClicll of the cullCtst;uclurc invert ill)
Permanent Pool Surface Area tt'?"5 sq. IL (water surface area at pemlanenl pool elevation)
Drain:lge Amu ac. (on-site and off-sllc drainage to the basin)
lmpcrvlou5 Area ac. (on-sile and ol1 Site drainage to Ilrc basin)
Pcanoncnt Pool Volume 22 Z' cu. IL (combined volun;c of main basin and forcbay) -4A3'
Temporary Pool Volume cu. It. (volume detained oa lop of U)c pcrmarncul pool)
Forcbay Volumu cl 4. cu. ft. CL $b3 - SL9D1
SAJDA used ' 215
1 (surface area to drainai c area ratio)
Diameter CI Oririco '3 in. (dray down orifice diameter)
If. REQUIRED ITGv1S CHECKLIST
The following clieeklisl outlines design requirements per the Slormwatcr Sesl MaaDgcrnent Practices Manual Initial in 1110 space
pro•rded to indicate lhu lullovrino de:.iga rcquiremonls have boon nlct and supporting documentation is aLluchud. ira rcgt,r"clnCrir riJG
not been mot, ullach an cxJllJrlafiun of v.hy. At a minilnuin, a complete slornlwalCf n'anagcmcnt plait submittal includes a worksheet for
eadl GIV, design caleulatiolis, plan:; and speciricalions showing all 8fVPs and oullcl slruclure details, a delailed drainage plan ;;nc a
fully executed operation and waintcnance agreement. An incomplete submillal package will result ill a requusl for additional information
c:nd will substantially dclily Goal review and approval of tiro project
Anolicanl:
Specific oCdiISlCllt clean-ollt bCnclnflarl: is listed (C1CYEliG11 or depth) in O&M plan.
?? The lcnlporary pool conlrols runoff from the 1 inch storm event.
5 t, f^ The basin length to width ratio is greater than 3:1.
hc basin side slopes are no sleeper Ilion 3:1,
tit?k.,u...cuLl,TlvfC _ ,? submcrgcd'and vegetated perimeter spelt at less than ii: i is provided.
4.. Vegetation to llre permancntpool elevation is specified.
1 *J An eniciguncy drain is provided to drain Ilic basin.
l he painionent pool dcpUi k; bctvlceri 3 and G feel (required minilmum of 3 Seel).
Tmporary pool draws dower in 2 to 5 days.
The forcbay volume is approximately equcl to 20% of the told basin volume.
_ Scduncnl storage is provided in lllc permanent pool.
k4
'
? ACCCs ; is provided for mointel lance.
_--
Z`
' A netaii7.cd:;ile Jpcufic opcratloa and ntelntcnanec (OUtvl) plan Is providcd.
lZ A vcgclilUon nlanadcnlenUinowing ,clicdulc is provided in the OW-A plan.
1_?•(?u ocnni-wi nual inspections are specified in Vie OS PA plan.
l?fv?
ecified in the 04M plan to be performed after every storm ovent.
A dcbri:; check is sp
A Specific
?'l) A ICS Ul1Sib1C art is dcslr na1Cd in UnC CutJt plan.
MAR-22-2005 TUE 12:05 TEL:[phone] HAME:DWQ-WETLANDS
P'. 2
Mar 22 05 12:33p Borum, Wade and Assoc. 336-275-3719 p.3
WET [WETLAND] DETE=NTION BASIN OPERATION AND MAINTENANCE AGREEMENT
[Wetlacld maintenance wording is bracketed. Please modify the document as appropriale.]
The wet [wetland] detention basin system is defined as the wet [wetland] detention basin, pretreatment
including forebays and the vegetated filter il one is provided.
Maintenance activities shall be performed as follovrs:
1. After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet [wetland] detention basin system for sediment accumulation, erosion, trash
accumulation, vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within
2 to 5 days as designed.
2. Repair eroded areas immediately, rc-seed as necessary to maintain good vegetative cover, mow
vegetative cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to
maintain proper functioning.
4. Remove accumulated sediment from the wet [wetland] detention basin system semi-annually or when
depth is reduced to 75% of the original design depth (see diagram below). Removed sediment shall be
disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact
water quality (i.e. stockpiling near a wet [wetland] detention basin or stream, etc.).
The measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments.
V11hen the permanent pool depth reads-'>3.1S feet in the main pond, the sediment shall be removed.
[f=or stormwater wetlands: if the elevation of the marsh areas exceed the permanent pool elevation, the
sediment should be removed to design levels. This shall be. performed by removing the upper 6 inches of
ve the n he soil sdesign hould elevations.
soil and Then the
not be sleckpilea
shouldlber spreadlob excavated
surface. T
Afterwards Ilcd
for more than two weeks.]
When the permanent pool depth reads 31t feet in the forebay [and micro-pooll, the sediment shall
be removed.
BASIN DIAGRAM
(fill in the blanks)
y
Sediment F, moval El.-ik3lj
---,_,--
Bottom E?vatioll 03
FOREBAY
Permanent Pool Elevation $0$'v
75%
Sediment Removal Elevation 17-5%--
------------------
mmi^rn ?--lnvntinn SO -3
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Mar 22 05 12:34p Borum, Wade and Rssoc. 336-275-3719 p.5
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. Thcsc
plants shall be encouraged to grow along the vegetated shelf and forcbay berm.
[f=or wetlands: Wetland planting densities in the marsh areas should be maintained by replanting bare
areas as needed. Wetland plants should be encouraged to grow in the marsh areas.]
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment
through the emergency drain shall be minimized to-the maximum extent practical.
7. All components of the wet [wetland] detention basin system shall be maintained in good working order.
8. Level spreaders or other structures that provide diffuse flow shall be maintained every six months. All
accumulated sediment and debris shall be removed from the structure, and a level elevation shall be
maintained across the entire flow spreading structure. Any down gradient erosion must be repaired andlor
replanted as accessary.
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
maintenance procedures listed above. I agree to notify DWQ of any problcn-.s with the system or prior to Limy
Changes to the system or responsible party.
Print name: L,?tlti-?( ?' S--tv'es
Title: ??-?St'DF 1J`? W ti\-Lc w
Address:
-10 , 1,3 C- 2'14-0 l
Phone: ?3q) 2' ' -oL
Signature:, ,? /.
Date: /0 - 06'
Note: The legally responsible party should not be a homeowners association unless more than 50'/0 of the
lots have been sold and a resident of the subdivision has been named the president.
a Notary Public for the State of Nc ?? C(S r ?f ?.? ?"t
County of 0.1'k, I i do hereby certify that f (1 1 C" I ?? • :?,_ J?
l:ersonally appeared before me this Si-In day of and acknowiedcgc the duc
execution o` the forgoing wet [wetland] detention basin maintenance requirements. W.tness my hand and
eff:cial seal,
vJ

SEAL
My commission expires X71 - a y- L'00 B,
Page 2 of 2
MAP,-22-2005 TUE 12:06 TEL:[phone] NAME:DWQ-WETLANDS P. 5
Mar 22 05 12:53p Horum, Wade and Assoc. 336-275-3719

MAR-22-2005 TUE 12:25 TEL:[phone] NAME:DWQ-WETLANDS
p.1
P. 1
1 I ' I I t/ S / GLA55Q FAIP-RAP
7 4
C D E
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Michael F. Easley, Governor William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
February 18, 2005
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Wiley A. Sykes, Jr.
Willow Oak Partners, Inc.
405-D Parkway
Greensboro, NC 27404
Subject Property: Tyson Place Subdivision, Greensboro, NC
REQUEST FOR MORE INFORMATION-Stormwater Management Plan
DWQ Project # 04-1069
Guilford County
On February 17, 2005; the Division of Water Quality (DWQ) received the revised stormwater
management plan prepared by your engineer, Mr. Homer S. Wade, P.E. of Borum, Wade and Assoc.,
P.A., to comply with Condition 4 of the 401 Water Quality Certification issued on August 13, 2004. This
conditions states:
"A final, written stormwater management plan shall be approved in
writing by this Office before the impacts specified in this Certification
occur per condition number 4 in General Certification 3402. The
stormwater management plan must include the plans and specifications
that are appropriate for surface waters classified as Class WS-III, NSW,
CA [critical area] and designed to remove 85% TSS according to the
most recent version of the NC DENR Stormwater Best Management
Practices Manual. These facilities must be designed to treat the runoff
from the entire project, unless otherwise explicitly approved by the
Division of Water Quality..."
GC 3402 [located at: http://h2o.enr.state.nc.us/ncwet]aiids/GC3402.pdf] specifies in
Condition 4:
"...Additionally, in watersheds within one mile and draining to 303(d)
listed waters, as well as watersheds that are classified as nutrient
sensitive waters (NSW), water supply waters (WS), trout waters jr),
high quality waters (HQW), and outstanding resource waters
(ORW), the Division shall require that extended detention wetlands, bio-
retention areas, and ponds followed by forested filter strips (designed
according to latest version of the NC DENR Stormwater Best
Management Practices Manual) be constructed as part of the
stormwater management plan when a site-specific stormwater
management plan is required.
The Stormwater Management Plan and its revisions, to date, does not appear to satisfy these
requirements.
401 Wetlands Certification Unit
1650 Mail Service Center, Raleigh, North Carolina 27699.1650 One
orthCarolina
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 NNaturally
Phone: [phone] / FAX [phone] / Internet: http://h2o.enr.state.nc.us/ncwetiands An Equal Opportunity/Affirmative Action Employer- 50°'o Recycled/10% Post Consumer Paper
Tyson Place
Page 2 of 2
February 18, 2005
You are reminded that development within the Critical Area of a WS-III specifies a maximum allowable
density.
Please respond within three weeks of the date of this letter by sending three (3) copies this information in
writing. This letter only addresses the stormwater management plan review and does not authorize any
impacts to wetlands or streams until the plans are approved. Please contact Cynthia Van Der Wiele,
Ph.D. at [e-mail] or 919-715-3473 if you have any questions regarding this issue.
Sincerely,
3
Cyndi B. Karoly
DWQ, 401 Oversite/Express Review Program
CBK/cvdw
cc: Daryl Lamb, DWQ Winston-Salem Regional Office
USACE Raleigh Regulatory Field Office
Scott Carpenter, DWQ
File Copy
Central Files
Homer S. Wade, Borum, Wade & Assoc., P.A., 405-D Parkway, Greensboro, NC 27404
Project Name: Tyson Place
Project No. DW Q 04-1069
Pond No.
SUBMITTED DESIGN: 1 REQUIRED DESIGN:
5/12/2005
elevations 3.4 average depth status
Bottom of Basin (ft) 803
Permanent Pool (ft) 808 5 ft. depth ok
Temporary Pool (ft) 810.5 2.5 ft. depth ok

areas
Permanent Pool SA (sq ft) 6625 6371 sq. ft. ok
Drainage Area (ac) 11.5 6015; based on avg depth ok
Impervious Area (ac) 4.7 40.9 % -
volumes
Permanent Pool (cu ft) 22792
Temporary Pool (cu ft) 19608 17442 cu. ft. ok
Forebay (cu ft) 4894 21.5 % ok
other parameters
SA/DA 1.275 1.27 -
Orifice Diameter (in) 1.375 0.06 cfs drawdown -
Design Rainfall (in) 1 4.1 day drawdown ok
Linear Interpolation of Correct SAIDA * * *
5 ft. Permanent Pool Depth
% Impervious SA/DA fron (Avg. Depth)
Next Lowest 40 1.25 1.175148679
Project Impervious 40.9 1.27 1.20'
Next Highest 50 1.5 1.469178868
3 ft
ort
?rr?Pd
D
1.08
1.11
1.43
4
12-

Please call Mike Otto at 336-275-0471 to set up a meeting
to discuss stormwater plan. This plan has gone thru several
iterations, the latest of which is the first time the WSIII
requirements were noted.
C'
J / 7(
` illy
Wetland and Natural Resource
Consultants, Inc.
June 28, 2004
Mr. Andrea Wade
US Army Corps of Engineers
6508 Falls of Neuse, Ste 120
Raleigh, NC 27615
Re: Tyson Place Subdivision, Rustykat Court
Greensboro, Guilford County, NC
Mr. Wade:
i i o
WETLANDS1401 GROUP
JUN 3 0 2004
WATER QUALITY SECTION
The purpose of this letter is to request authorization to construct a road crossing
to access high ground. The perpendicular crossing utilizes headwalls up to 14 feet
tall as a means to reduce impacts. The drawings illustrate that the pipe will be
installed below grade and the 201f riprap apron would appear to be able to be
considered minimal impacts.
Copies of this application are being forwarded to the NC DWQ as the project is
located in a Water Supply Watershed (WS-III) and thus requires notification.
The subdivision design incorporates a stormwater BMP in accordance with the local
jurisdiction. The impact exhibit demonstrates that road run-off will be piped into
the proposed facility. One hundred foot vegetated buffers to the USGS mapped
perennial stream are maintained.
Please review the enclosed information and call with any questions that you may
have.
Cris Huysman
828 / 320 8120
Newton Office Clyde Office
PO Box 224 wnrinc.com 217 Paragon Parkway, #t 142
Newton, NC 28658 Clyde, NC 28721
828-465-3035 828-627-0051
828-465-3050 Fax [phone] Fax
Office Use Only: Form Version May 2002
USACE Action ID No. DWQ No.
(u any parucutar item is not appacaote to uus project, piease enter ivot Appiicaoic or -iN/A .)
1. 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: 39
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 (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: ?
H. Applicant Information
1. Owner/Applicant Information
Name: Willow Oaks Partners, Inc
Mailing Address: c/o Wiley A. Sykes, es, Jr
405-D Parkway
Greensboro, NC 27404
Telephone Number: 336 275 0471 Fax Number:
E-mail Address:
2. 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.)
Name: Wetland and Natural Resource Consultants, Inc
Company Affiliation: Chris Huysman
Mailing Address: PO Box 224
Newton, NC 28658
Telephone Number: 828 320 8120 Fax Number: 828 465 3050
E-mail Address: WNRINC@,aol.com
M. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Rustykat Court
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): 000906170063700016A
4. Location
County: Guilford Nearest Town: Greensboro
Subdivision name (include phase/lot number): Tyson Place
Directions to site (include road numbers, landmarks, etc.): From intersection ofN Church
St. and Lees Chapel, Greensboro, head north on N. Church to new DOT ROW. See site plan
and USGS
5. Site coordinates, if available (UTM or Lat/Long):36-08-26 N and 79-47-09 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): 10
7. Nearest body of water (stream/river/sound/ocean/lake): UT Lake Townsend
8. River Basin: Cape Fear
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://l12o.enr.state.nc.us/admin/maps/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: Forested and recently timbered forestland. Perennial stream
bisects the property; shown as blue line on USGS. Also, one ephemeral / stormwater channel
located on site. Sewer line parallels perennial stream, sewer installed greater than 10 yrs ago.
10. Describe the overall project in detail, including the type of equipment to be used:
Proposed road crossing to access high ground. Attached details show that headwalls will be
utilized to reduce pipe impacts. Rip-rap, pipe and inlet protection impact 132 linear feet of
perennial streams. The pipe and rip rap will be installed with back hoes and other heavX
equipment
11. Explain the purpose of the proposed work:
The purpose is to access high _rc ound•
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 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 additional impacts will be required for the development
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
1. Provide a written description of the proposed impacts:
Road crossing to access highgound including inlet work to eliminate conflicts with the existing
sewer facilities. Impacts include 20 If outlet. The pipe is designed to be installed below rt, ade.
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***
N/A

' List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
" 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at hart/w?"V icmu.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.) 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: 0.00
Total area of wetland impact proposed: 0.00
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?
(lease specify)
Stream Impact pipe and riprap 132 UT Lake Townsend 2 perennial

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 alter, and net losstgain),
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
NtiAti'\v.us,s. ov. Several internet sites also allow direct download and printing of USGS maps (e.g., wwyv.topozone.com,
www.mapquest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 132
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U. S.) below:
Open Water Impact
Site Number
(indicate on ma)
Type of Impact* Area of
Impact
(acres) Name of Waterbody

(if applicable) Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.)
N/A

' List each impact separately and identify temporary impacts. Impacts include, but are not limited to: fill, excavation, dredging,
flooding, drainage, bulkheads, etc.
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.): Dam embankment with outlet control structure. Local
stormwater requirement for watershed area. Appx. 6500sf surface area.
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): Stromwater requirement to be approved locally
Size of watershed draining to pond: 10 acres Expected pond surface area: 0.15 acre
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.
Headwalls and below urade installation used to minimize crossinu impacts.
Access to highuound must occur as shown.
Proposed Painter Boulevard is limited access
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
http://h2o.enr.state.nc.us/ncwetlands/strmi4ide.litmi.
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.
Stream mitigation is not required CDWQ) because impacts are less than 150 linear feet
Wetland mitigation is not required (NCDWQ) because impacts are less than one acre
Remaining channel to be preserved.
Stormwater requirements will provide for treatment.
All impervious areas, other than the crossing, will be greater than 100 if from stream
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
to submittal of a PCN. For additional information regarding the application process for the
NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of
the NCWRP is proposed, please check the appropriate box on page three and provide the
following information:
Amount of stream mitigation requested (linear feet): 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
LX. 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 ?
Y. 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 213 .0233
(Meuse), 15A NCAC 213 .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify N/A)?
Yes ? No ? If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* Impact
(square feet) Multiplier Required
Mitigation
1 3
2 1.5
Total
' Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
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 (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.
Plans include stormwater treatment facility located northwest of the road crossing. The facility
will be approved by City of Greensboro through watershed administrator
XH. 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.
Municipal sewer
XM. 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 21
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).

Applicant/Agent's SignAture Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
HPP.-9T-9d 0::16 PM W -,Z- of3?Sd

"- Wetland and
Mtural Resource
-4- ==- Consultants, Inc.

Department of the Army NC Division of Water Quality
Wilmington Disb-ict, Corps of Engineers Attn: John Dcrney
Attn: G. Wayne Wright, Chief Regulatory Civisicn 4401 Reedy Creek Crive
P.O. Box 1890 Raleigh, North Carolina 27614
Wilmington, North Carolina 28402-1890
I, the current landowner of the property identified below, hereby authorize wetland and
Natural Re$curce Consultants, Inc. to act cn my behalf as my agent during the
prccessing;cf permits to impacted Wetlands and Waters of the U.S. that are regulated
by the Clean Water Act and the Rivers and Harbors Act.
Federal and State agents are authorized to be cn said property when accompanied by
Wetland acid Natural Resource Consultants, Inc. staff.
Wetland and Natural Resource Consultants, Inc. is auttiorized to provide supplemental
lnfcrmatlon needed fcr permit processing at the request of the Corps or DWQ.
Property Gwner of Reccrd: /L ??? ?A " 5 ? _ i 'E2 S
Address:
Phone Number: (3 7???7? ?n ~ `' a 4/?
Property Location:
Owners Signature: /
Date:
I; . J
626-312-9207 Chris 720 south Mcir Ave.
828-312-9205 ,enn!fer Newton, NC 28653
828-312-9206 Tcrrmp 828-4653050 Fcx
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Name: LAKE BRANDT Location: 036° 08'25.96" N 079° 47' 09.25" W
Date: 6/28/2004 Caption: Tyson Place
Scale: 1 inch equals 2000 feet Willow Oaks Partners
Copyright (C) 1998, Maplech, Inc.
Photos of stormwater channel
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Determination Manual)
Project / Site: Tyson Place Date: 052704
Applicant / Owner: Willow Oaks Partners County: Guilford
Investigator: Huysman State: NC
Do normal circumstances exist on the site? Yes ® No ? Community ID:
Is the site significantly disturbed (Atypical situation)? Yes ? No ® Transect ID:
Is the area a potential problem area? Yes ? No ® Plot ID:
(explain on reverse if needed)
VEGETATION
Dominant Plant Species Indicator Stratum Dominant Plant Species Indicator Stratum
1. Acer rubrum FAC tree 9. Campsis radicans FAC vine
2. Platanus occidentalis FACW- tree 10. Toxicodendron redicans FAC vine
3. Quercus phellos FACW tree 11. Fagus grandifolia FACU tree
4. Pinus taeda FAC tree 12.
5. Fraxinus pennsylvanica FACW tree 13.
6. Juglans nigra FACU sapling 14.
7. Rosa multiflora UPL shrub 15.
8. Smilax rotundifolia FAC vine 16.
Percent of Dominant Species that are OBL, FACW, or FAC excluding FAC-). 100
Remarks: Floodplain adjacent to e phemeral channel located in a draw.
HYDROLOGY
? Recorded Data (Describe In Remarks): Wetland Hydrology Indicators
? Stream, Lake, or Tide Gauge
? Aerial Photographs Primary Indicators:
? Other ? Inundated
? Saturated in Upper 12"
? No Recorded Data Available ? Water Marks
? Drift Lines
Field Observations: ? Sediment Deposits
? Drainage Patterns in Wetlands
Depth of Surface Water: 0 (in.) Secondary Indicators:
Depth to Free Water in Pit: +18 in.) ? Oxidized Roots Channels in Upper 12"
? Water-Stained Leaves
? Local Soil Survey Data
Depth to Saturated Soil: +18( In.
) ?FAC-Neutral Test
? Other (Explain in Remarks)
Remarks: Some evidence of infrequent flooding but area dominated by recent leaf material that has
not blackened. Very poorly defined drainage pattem with many roots in various locations.
SOILS
Map Unit Name
(Series and Phase): Chewacla variant Drainage Class: Somewhat poorly drained
Taxonomy (Subgroup): (Ch) Fluvaquentic Dystrochrepts Confirm Mapped Type? Yes ? No ?
Profile Description:
Depth Matrix Colors Mottle Colors Mottle Texture, Concretions,
(inches) Horizon (Munsell Moist) (Munsell Moist) Abundance/Contrast Structure, etc.
0-6 A 10YR 5/3 / loam
6-15 B 10YR 5/4 10YR 4/4 common/distinct sandy clay loam

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:
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes ® No El Is the Sampling Point
Wetland Hydrology Present? Yes ? No ® Within a Wetland? Yes ® No
Hydric Soils Present? Yes ? No
Remarks: Not a wetland, Consultant assesses that drainage is no more than stormwater due
to the poorly defined drainage.
Name of Stream Description Curr. Class Date Prop. Class Basin Stream Index # Is
Reedy Fork From a point 0.4 mile WS-III;NSW 08/03/92
(including Lake downstream of Moores CA
Brandt and Lake Creek to Lake
Townsend below Townsend Dam (City of
normal Greensboro water supply
operating levels) intake)
o to
:i+"?` }ice„
point 0.5 mile
downstream of
Guilford County SR 2190
Brush Creek (Lake From a point 0.5 mile WS-III;NSW 08/03/92
Higgins) downstream of CA
Guilford County SR 2190
to Lake Brandt, Reedy
Fork
Horsepen Creek From source to U.S. WS-III;NSW 08/03/92
Hwy. 220
Unnamed Tributary From source to dam at WS-III,B;N 08/03/92
at Guilford Guilford College SW
College bathing lake
Unnamed Tributary From dam at Guilford WS-III;NSW 08/03/92
at Guilford College bathing lake to
College Horsepen Creek
Horsepen Creek From U.S. Hwy. 220 to WS-III;NSW 08/03/92
Lake Brandt, Reedy Fork CA
Long Branch From source to a WS-III;NSW 08/03/92
point 0.5 mile upstream
of mouth
Long Branch From a point 0.5 mile WS-III;NSW 08/03/92
upstream of mouth to CA
Lake Townsend, Reedy
Fork
Richland Creek From source to a WS-III;NSW 08/03/92
(Richland Lake) point 0.5 mile upstream
of dam at Richland Lake
Richland Creek From a point 0.5 mile WS-III;NSW 08/03/92
(Richland Lake) upstream of dam at CA
Richland Lake to Lake
Townsend, Reedy Fork
Squirrel Creek Froom source to a point WS-III;14SW 08/03/92
0.4 mile downstream
of Guilford County SR
1001
Squirrel Creek From a point 0.4 mile WS-III;NSW 08/03/92
downstream of CA
Guilford County SR 1001
to Lake Townsend, Reedy
Fork
Cape Fear 16-11-(3.5)
Cape Fear 16-11-4-(2)
Cape Fear 16-11-5-(0.5)
Cape Fear 16-11-5-1-(1)
Cape Fear 16-11-5-1-(2)
Cape Fear 16-11-5-(2)
Cape Fear 16-11-6-(1)
Cape Fear 16-11-6-(2)
Cape Fear 16-11-7-(1)
Cape Fear 16-11-7-(2)
Cape rear 16-11-8-(1)
Cape Fear 16-11-8-(2)
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BORUM, WADE AND ASSOCIATES, P.A.
ENGINEERS - PLANNERS - SURVEYORS
405 D PARKWAY
GREENSBORO, N.C. 27401
MAILING ADDRESS:
P.O. BOX 14125
GREENSBORO, N.C. 27415-4215
October 12, 2004
-?
Re: Tyson Place -Greensboro
44 Lot Urban Subdivision
DWQ Project #04-1069 5 2004
?.cT? ,1 R QUALITY
??iT '; G?JtdCN
Stormwater Plan Narrative
Drainage Overview
The entire Tyson Place Subdivision is located in the Greensboro
Watershed, WS-III (Tier 4) in the Cape Fear River basin. There is a
perennial stream crossing the subject property. Surface drainage flows
into a stormwater BMP which discharges into the perennial stream. Off
site runoff flows untreated through the property via an approved road
crossing. Each of these discharges are shown on the stormwater
management plan previously submitted. The proposed road crosses the
perennial stream with less than 150 feet of channel disturbance. The
crossing was permitted by the U. S. Army Corps of Engineers under
nationwide permit no. 39 and DWQ permit 401.
Planning Goals
The Stormwater planning goals include:
1. Minimize sediment and other pollutants from entering the stream
during and after construction.
2. Maintain pre-development peak flows to avoid off site channel
erosion and flooding during post-development storm water
conveyance.
Design Summary
To accomplish the above goals, we propose to grade the site, convey
stormwater via a piping system to a water quality wet detention pond
located near the natural discharge point. The wet detention basin has
been designed in accordance with the City of Greensboro's Stormwater
Management Ordinance requiring the removal of 85% of TSS (total
suspended solids) from the runoff of the first one (1) inch of rainfall over
PHONE: [phone] FAX: [phone] EMAIL: [e-mail]
BORUM, WADE AND ASSOCIATES, P.A.
ENGINEERS - PLANNERS - SURVEYORS
405 D PARKWAY
GREENSBORO, N.C. 27401
MAILING ADDRESS:
P.O. BOX 14125
GREENSBORO, N.C. 27415-4215
the drainage area to the pond. The pond will serve as a sediment basin
during the construction of the subdivision. The pre-development peak flow
rates will be maintained for the 2-year and 100-year 24-hour design storm
events. Due to space and grade constraints, the pre-development peak
rate will not be maintained for the 10-year 24-hour design storm event. The
stormwater management study previously submitted indicates the
additional 21.6 CFS of additional runoff will raise the flow in the channel by
approximately one (1) inch at the point were site area represents 10% of
the drainage area studied and will not cause downstream flooding or
erosion to occur. Due to space and grade constraints, a submerged shelf
at 6:1 maximum slope was not possible and its omission does not
adversely affect the pond's performance of design intent.
The City of Greensboro approved the Tyson Place Water Quality Pond Plan
and Stormwater Management Plan on March 30, 2004.
CONSTRUCTION
Our office will supervise and certify construction Water Quality Pond. We
will stake the location of the structure in accordance with the approved
plans. We will provide a certification of the pond as built status to the City
of Greensboro upon completion.
PHONE: [phone] FAX: [phone] EMAIL: [e-mail]
PXV7
ffnm\
FA CD)
Fm R
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
September 29, 2004
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Wiley A. Sykes, Jr.
Willow Oak Partners, Inc.
405-D Parkway
Greensboro, NC 27404
Subject Property: Tyson Place Subdivision, Greensboro, NC
REQUEST FOR MORE INFORMATION-Stormwater Management Plan
William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
DWQ Project # 04-1069
Guilford County
On September 15, 2004, the Division of Water Quality (DWQ) received the stormwater management plan
prepared by your engineer, Mr. Homer S. Wade, P.E. of Borum, Wade and Assoc., P.A., to comply with
Condition 4 of the 401 Water Quality Certification issued on August 13, 2004.
1
Only complete application packages will be accepted and reviewed by the Division of Water Quality
(DWQ). The following items were not included:
¦ Signed and notarized Operation and Maintenance Agreement for the stormwater facilities.
¦ Completed worksheet for each stormwater management facility (BMP worksheets).
¦ Detailed narrative description of stormwater treatment/management.
The stormwater BMP worksheets can be found on the 401 Oversite/Express Review Website
(http://h2o.enr.state.nc.us/ncwetlands/niitresto.htn-d).
Please respond within three weeks of the date of this letter by sending three (3) copies this information in
writing. This letter only addresses the stormwater management plan review and does not authorize any
impacts to wetlands or streams until the plans are approved. Please call Ms. Cynthia Van Der Wiele at
919-715-3473 or Mr. John Dorney at 919-733-1786 if you have any questions regarding this issue.
Unit
JRD/cvdw
cc: DWQ Winston-Salem Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Central Files
Homer S. Wade, Borum, Wade & Assoc., P.A., 405-D Parkway, Greensboro, NC 27404
Chris Huysman, Wetland & Natural Resource Consultants, Inc., PO Box 224, Newton, NC 28658
401 Wetlands Certification Unit
1650 Mail Service Center, Raleigh, North Carolina 27699.1650 One
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 NorthCarolina
Phone: [phone]/ FAX [phone]/ Internet: htt?://h2o.enr.state.nc.us/ncwetlands//h2o.enr.state.nc. us/ncwetlands
;Vatutrally
An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper
AVG-
MCDE R
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
December 22, 2004
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Wiley A. Sykes, Jr.
Willow Oak Partners, hic.
405-D Parkway
Greensboro, NC 27404
Subject Property: Tyson Place Subdivision, Greensboro, NC
REQUEST FOR MORE INFORMATION-Stormwater Management Plan
William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
DWQ Project # 04-1069
Guilford County
On December 9, 2004, the Division of Water Quality (DWQ) received the revised stormwater
management plan prepared by your engineer, Mr. Homer S. Wade, P.E. of Borum, Wade and Assoc.,
P.A., to comply with Condition 4 of the 401 Water Quality Certification issued on August 13, 2004.
Review of the plans revealed the following deficiency:
The forebay of the wet detention pond is extremely oversized-47% of total volume. Volume is
required to be 20% of the total basin volume. DWQ does not feel that oversizing to this extent
provides enhanced water quality benefits.
Please respond within three weeks of the date of this letter by sending three (3) copies this information in
writing. This letter only addresses the stormwater management plan review and does not authorize any
impacts to wetlands or streams until the plans are approved. Please call Cynthia Van Der Wiele, Ph.D. at
919-715-3473 if you have any questions regarding this issue.
Sincerely,
( r? . /f a--&v
Cyndi B. Karoly
DWQ, 401 Oversite/Express Review Program
CBK/cvdw
cc: DWQ Winston-Salem Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Central Files
Homer S. Wade, Borum, Wade & Assoc., P.A., 405-D Parkway, Greensboro, NC 27404
401 Wetlands Certification Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] / FAX [phone]/ Internet: http://h2o.enr.state.nc.us/ncwetlands
An Equal Opportunity/Affirmative Action Employer - 50°6 Recycled/l0% Post Consumer Paper
NorthCarolina
Natimally
Wetland and
Natural Resource
-90 Consultants, Inc.
o
Newton/ Hickory Office
11 South College St., Suite 103
PO Box 224
Newton, NC 28658
WETLANDS 1401 Phone: 828 / 465-3035
GROUP Fax: 828 / 465-3050
SEP 2004 r -CEIVFD
N.C. Cei;t, ut !:NR
"'TERQUAL/ TySECT'ON SEP 1 0 1004
Winstcn-C:!cin
iicricn.:t Oificc
To: I J"I L From:
Project:
Date: 9/8/2004
CC:
? Urgent ? For Review ? Please Comment ? Please Reply ? As requested
We are sending you ? Attached ? Under separate cover via
The following items:
REMARKS:
HvY 4.
pfd' `
P4,?' ? 'hC 2-7 'YEI/ '
pea ymn azc?F, SfVVn1L(AAtA M?M-? PIai2
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DISTRIBUTION:
? maps ? field report ? correspondence ? copy of
A r?90?
?.
65
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
WETLANDS/ 401 GROUP
August 13, 2004
SEP Y 5 2004 DWQ# 04-1069
Guilford County
Mr. Wiley A. Sykes, Jr.
Willow Oaks Partners, Inc.
405-D Parkway
Greensboro, NC, 27404
WATER QUALITY SECTION
APPROVAL of 401 Water Quality Certification with Additional Conditions
Dear Mr. Sykes:
Willow Oaks Partners, Inc. has our approval, in accordance with the attached conditions, to place permanent
fill in 132 linear feet of perennial stream in order to construct a road crossing for the Tyson Place Subdivision
located off of Woodberry Lake Drive in Greensboro, Guilford County, as described in your application
received by the Division of Water Quality (DWQ) on June 30, 2004. After reviewing your application, we
have determined that this fill is covered by General Water Quality Certification Number 3402, 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 39 when it is issued by the U.S. Army Corps of Engineers. In addition, you
should secure any other applicable federal, state or local permits before you proceed with your project,
including (but not limited to) those required by Sediment and Erosion Control, Non-Discharge, and Water
Supply Watershed regulations. Also, this approval will expire when the accompanying 404 permit expires
unless otherwise specified in the General Certification.
This approval is valid only for the purpose and design that you have described in your application. If you
change your project, you must notify us in writing, and you may be required to send us a new application for
a new certification. If the property is sold, the new owner must be given a copy of the Certification and
approval letter and is thereby responsible for complying with all conditions. If total wetland fills for this project
(now or in the future) exceed one acre, compensatory mitigation may be required as described in 15A NCAC
2H .0506 (h). For this approval to be valid, you must follow the conditions listed in the attached
certification, as well as the additional conditions listed below:
The 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
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).
2. 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 stream bottom must be inserted into the bottom matrix to a depth
o One
NhCarolina
,l1?aturally
North Carolina Division of Water Quality
Wetlands Certification Unit 1650 Mail Service Center Raleigh, NC 27699-1650 Phone [phone] FAX [phone]
2321 Crabtree Blvd. Raleigh, NC, 27604-2260 Internet http// h2o enrstate.nc.us'ncHetlands
Customer Service Number: 1-877-623-6748
An Equal Opportunity/Affirmative Action Employer - 500,16 Recycled/10o% Post Consumer Paper
sufficient to provide the thickness of riprap required for scour protection. The elevation of the stream
bottom 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 any crossing.
3. If concrete is used with any fill material, it shall not be allowed to come in contact with surface waters
until it has cured.
4. A final, written stormwater management plan shall be approved in writing by this Office before the
impacts specified in this Certification occur per condition no. 4 in General Certification 3402. The
stormwater management plan must include plans and specifications for stormwater management
facilities that are appropriate for surface waters classified as Class WS-III; NSW, CA and designed to
remove 85% TSS according to the most recent version of the NC DENR Stormwater Best Management
Practices Manual. These facilities must be designed to treat the runoff from the entire project, unless
otherwise explicitly approved by the Division of Water Quality. Also, before any permanent building is
occupied at the subject site, the facilities (as approved by this Office) shall be constructed and
operational, and the stormwater management plan (as approved by this Office) shall be implemented.
The structural stormwater practices as approved by this Office as well as drainage patterns must be
maintained in perpetuity. No changes to the structural stormwater practices shall be made without
written authorization from the Division of Water Quality. The stormwater controls proposed for this
project shall utilize DWQ design and construction criteria for any required detention ponds. Stormwater
energy dissipation and sheet-flow shall be obtained through the use of level spreaders, which conform
to DWQ design and construction criteria.
5. Upon finishing the project, the Applicant shall fill out and return the enclosed "Certificate of Completion"
to notify NCDWQ when all work included in the §401 Certification has been completed. This certificate
should be returned to the 401/Wetlands Unit of the NC Division of Water Quality at the address listed
on the form. Along with the Certificate of Completion, please send photographs upstream and
downstream of each 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 150B of the North Carolina General Statutes to the Office of Administrative
Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This certification and its conditions are final
and binding unless you ask for a hearing.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If
you have any questions, please telephone Daryl Lamb in the DWQ Winston-Salem Regional Office at 336-
771-4600 or 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
Chris Huysman, Wetland and Natural Resource Consultants, Inc., P. O. Box 224, Newton, NC 28658
Project Name: Tyson Place
Project No. DWQ 041069
Pond 1
SUBMITTED DESIGN: REQUIRED DESIGN:
elevations 3.4 average depth stathts
Bottom of Basin (ft) 800
Permanent Pool (ft) 808 8 ft. depth check depth
Temporary Pool (ft) 810.5 2.5 ft. depth ok

areas
Permanent Pool SA (sq ft)
6625
6371 sq. ft.
ok
Drainage Area (ac) 11.5 6015 based on avg depth ok
Impervious Area (ac) 4.7 40.9 rk -

volhanes
Permanent Pool (cu ft) 22792
Temporary Pool (cu ft) 19608 17 ok
Porebay (cu ft) 10721 47.0 ?/o check forebc
other parameters
SA/DA 1.275 1.27 -
Orifice Diameter (in) 1.375 0.06 cfs drawdown -
Design Rainfall (in) 1 4.1 day drawdown ok
Linear Interpolation of Correct SAIDA***
8 ft. Permanent Pool Depth
r/a Impervious SA/DA fron
Next Lowest 40 1.25 (Avg. Depth)
1.175148679 1.08
Project Impervious 40.9 1.27
Next Highest 50 1.5 1.20 1.11
1.469178868 1.43
3 ft
fvl3? l z Z 2. 0 4
lte_r fv J 4b
-?a( -- r,,d ,n ka t ceZ
,
5. Remove cattails and other indigenous Wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
[For wetlands: Wetland planting densities in the marsh areas should be maintained by replanting bare
areas as needed. Wetland plants should be encouraged to grow in the marsh areas.]
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment
through the emergency drain shall be minimized to the maximum extent practical.
7. All components of the wet [wetland] detention basin system shall be maintained in good working order.
8. Level spreaders or other structures that provide diffuse flow shall be maintained every six months. All
accumulated sediment and debris shall be removed from the structure, and a level elevation shall be
maintained across the entire flow spreading structure. Any down gradient erosion must be repaired and/or
replanted as necessary.
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print name: UJ%L" k,. S--IS
Title: :'0-e5t1D'EO-r Wti L W OW(-'s RA-n'1VMS
Address: (LS SUOO W(I V)
Phone: 33Lo Z'1?, "04lI
Signature:
"t; It I
Date: lb - 06- OO y
Note: The legally responsible party should not be a homeowners association unless more than 50% of the
lots have been sold and a resident of the subdivision has been named the president.
I, 5« rah Tam ?s kr nc? , a Notary Public for the State of NOr'-KA C6 eV l inct ,
County of ? [ETC , do hereby certify that Ly ? l ei/ A. S-Ike<,
personally appeared before me this 51-x, day of _Ocf obee- , VO , and acknowledge the due
execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand and
official seal,
n
laate/UkFly m
0
s
d ?
J
SEAL
My commission expires 01- ay- 200('
Page 2 of 2
BORUM, WADE AND ASSOCIATES, P.A.
ENGINEERS * PLANNERS " SURVEYORS
405-D PARKWAY (27401)
P.O. BOX 14215
GREENSBORO, NC 27415-4215
PHONE: [phone] - FAX: [phone]
TO: Cynthia Van Der Wiele, PhD
NC Department of Environment and Natural Resources
Division of Water Quality
Wetlands 401 Unit
1650 Mail Service Center
Raleigh, N.C. 27699-1650
Phone: [phone] Ext.
DATE: 12/7/04
TRANSMITTAL LETTER
DEC 0 9 2004
RE: Tyson Place - Greensboro DENR-WATER Ql1ALITy
DWQ Project #04-1069 ?'"E DSAUDSroRMMTERCiW,H
( x) herewith ( ) under separate cover
( ) Via FAX _ pages including this sheet. This Fax Will be Mailed () Yes () No
For Your:
( x) approval
( ) review & comment
( ) use
The Follnwina-
Co ies Date Descriptions
1 Revised Signed and Notarized Operation and Maintenance
Agreement
1 Revised Worksheet for Water Quality Pond
3 Pond Plan unrevised
1 Volume Calculations

Remarks:
Cynthia, on the pond worksheet, I inadvertently used the temporary sediment storage volume in the fore bay
instead of the total fore bay volume. I have revised the worksheet to rectify this. The fore bay volume is 47% of
the total basin volume. I am sorry for the confusion.
SENT BY: 7COPY TO:
Mike Otto
Project No. DWO 4 04-? 0(99 (to be provided by DWQ)
DIVISION OF WATER QUALITY - 401 WET DETENTION BASIN WORKSHEET
DWQ Stormwater Management Plan Review:
1. PROJECT INFORMATION (please complete the following information):
Project Name: '50W quos
Contact Person: Ml?e? OTTO Phone
For projects with multiple basins, specify which basin this worksheet applies lo:
Basin Bottom Elevation
Permanent Pool Elevation
Temporary Pool Elevation
Permanent Pool Surface Area
Drainage Area
Impervious Area
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
SAIDA used
Diameter of Orifice
g b ft. (average elevation of the floor of the basin)
_ &)5-0 ft. (elevation of the orifice invert out)
910-5 ft. (elevation of the outlet structure invert in)
eo'(015 sq. ft. (water surface area at permanent pool elevation)
11.5 ac. (on-site and off-site drainage to the basin)
1 b ac. (on-site and off-site drainage to the basin)
22., ?Z' cu. ft. (combined volume of main basin and forebay) 1EM3
o cu. ft. (volume detained on top of the permanent pool)
_ O t 21 cu. ft. EL $63- SL W1
•X15 (surface area to drainage area ratio)
3 in. (draw down orifice diameter)
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual. Initial in the space
provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has
not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for
each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a
fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information
and will substantially delay final review and approval of the project
Applicants Initials
The temporary pool controls runoff from the 1 inch storm event.
The basin length to width ratio is greater than 3:1.
The basin side slopes are no steeper than 3:1.
?acutbSlvti A submerged'and vegetated perimeter shelf at less than 6:1 is provided.
Vegetation to the permanent pool elevation is specified.
An emergency drain is provided to drain the basin.
The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
The temporary pool draws down in 2 to 5 days.
Tile forebay volume is approximately equal to 20% of the total basin volume.
o Sediment storage is provided in the permanent pool.
_LA Access is provided for maintenance.
LY A notarized site specific operation and maintenance (0&M) plan is provided.
A vegetation managemenUmowing schedule is provided in the 0&M plan.
Semi-annual inspections are specified in the 0&M plan.
A debris check is specified in the 0&M plan to be performed after every storm event.
A specific sediment clean-out benchmark is listed (elevation or depth) in 0&M plan.
A responsible party is designated in the 0&M plan.
WET [WETLAND] DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
[Wetland maintenance wording is bracketed. Please modify the docurnent as appropriate.]
The wet [wetland] detention basin system is defined as the wet [wetland] detention basin, pretreatment
including forebays and the vegetated filter if one is provided.
Maintenance activities shall be performed as follows:
After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet [wetland] detention basin system for sediment accumulation, erosion, trash
accumulation, vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within
2 to 5 days as designed.
2. Repair eroded areas immediately, re-seed as necessary to maintain good vegetative cover, mow
vegetative cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to
maintain proper functioning.
4. Remove accumulated sediment from the wet [wetland] detention basin system semi-annually or when
depth is reduced to 75% of the original design depth (see diagram below). Removed sediment shall be
disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact
water quality (i.e. stockpiling near a wet [wetland] detention basin or stream, etc.).
The measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments.
When the permanent pool depth reads--7 5 . feet in the main pond, the sediment shall be removed.
(For stormwater wetlands: If the elevation of the marsh areas exceed the permanent pool elevation, the
sediment should be removed to design levels. This shall be performed by removing the upper 6 inches of
soil and stockpiling it. Then the marsh area shall be excavated six inches below design elevations.
Afterwards the stockpiled soil should be spread over the marsh surface. The soil should not be stockpiled
for more than two weeks.]
When the permanent pool depth reads ?fir' _ feet in the forebay [and micro-pool], the sediment shall
be removed.
BASIN DIAGRAM
(fill in the blanks)
17
Permanent Pool Elevation $O$'O
Sediment Removal El.
Bottom Elevation 'ZOO 1 ?5%
FOREBAY
75%
Sediment Removal Elevation 01 175%_
MAIN POND
Page I of 2
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
[For wetlands: Wetland planting densities in the marsh areas should be maintained by replanting bare
areas as needed. Wetland plants should be encouraged to grow in the marsh areas.]
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment
through the emergency drain shall be minimized to-the maximum extent practical.
7. All components of the wet [wetland] detention basin system shall be maintained in good working order.
8. Level spreaders or other structures that provide diffuse flow shall be maintained every six months. All
accumulated sediment and debris shall be removed from the structure, and a level elevation shall be
maintained across the entire flow spreading structure. Any down gradient erosion must be repaired and/or
replanted as necessary.
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print name: WtL" ,L. IS--ty'es
Title: fI-tr_:sVQF,V) 04
Address:
Phone: L33 ' 'rn -04'? ?
Signature: Z6?4? _l???
Date: l1) --06-.000(-/U
0 . W L 2'1
Note: The legally responsible party should not be a homeowners association unless more than 50% of the
lots have been sold and a resident of the subdivision has been named the president.
a Notary Public for the State of KC:Vil 1 ('?ZrC?Ii.net ,
County of Okl I ?I?r1 , do hereby certify that e / A. &I t??
personally appeared before me this . day of '?C)r)?- , and acknowledge the due
execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand and
official seal,

l?t? 9 fl.? 1 i

t? I Pt11 i1 .tl!

SEAL
My commission expires CSI `ZLl- 200 Page 2 of2

BORUM, WADE AND ASSOCIATES, P.A.
ENGINEERS - PLANNERS - SURVEYORS
405-D PARKWAY GREENSBORO, NC 27401
PHONES: 275-0471 - FAX: [phone]
PROJECT NAME
PROJECT NO.
BY
CHECKED
SHEET OF
DATE
DATE
Project Name: Tyson Place
Project No. DWQ 041069
Pond 1
SUBMITTED DESIGN.
elevations
Bottom of Basin (ft) 800
Permanent Pool (ft) 808
Temporary Pool (ft) 810.5

areas
Permanent Pool SA (sq ft) 6625
Drainage Area (ac) 11.5
Impervious Area (ac) 4.7
volumes
Permanent Pool (cu ft) 28516
Temporary Pool (cu ft) 19608
Forebay (cu ft) 3806
other parameters
SA/DA 1.275
Orifice Diameter (in) 1.375
Design Rainfall (in) 1
Linear Interpolation of Correct SAIDA"*
% Impervious
Next Lowest 40
Project Impervious 40.9
Next Highest 50
REQUIRED DESIGN:
4.3 average depth status
8 ft. depth check depth
2.5 ft. depth ok
6371 sq. ft. ok
5317 based on avg depth ok
40.9 % -
17442 cu. ft. ok
13.3 % check forebc
1.27 -
0.06 cfs drawdown -
4.1 day drawdown ok
8 ft. Permanent Pool Depth
SA/DA fron (Avg. Depth)
1.25 1.028268679 1.08
1.27 1.06 1.11
1.5 1.408698868 1.43
3 ft 4
BORUM, WADE AND ASSOCIATES, P.A.
ENGINEERS " PLANNERS " SURVEYORS
405-D PARKWAY (27401)
P.O. BOX 14215
GREENSBORO, NC 27415-4215
PHONE: [phone] - FAX: [phone]
TO: John Dorney
NC Department of Environment and Natural Resources
Division of Water Quality
Wetlands 401 Unit
1650 Mail Service Center
Raleigh, N.C. 27699-1650
Phone: [phone] Ext.
DATE: 10/11/04
RE: Tyson Place - Greensboro
DWQ Project #04-1069
( x ) herewith ( ) under separate cover
TRANSMITTAL LETTER
Rl??'IIVLP-3 r
O C T 1 5 2004
C7iu Z -1VATER QUALITY
ire fl :%C3 f, d ? STGF"'%' ATER ER NCH
( ) Via FAX _ pages including this sheet. This Fax Will be Mailed () Yes ( ) No
For Your:
( ) approval
( ) review & comment
( x) use per your letter of September 29, 2004
The Followina:
Copies Date Descriptions
1 Signed and Notarized Operation and Maintenance Agreement
1 Completed Worksheet for Water Quality Pond
1 Storm Water Management Plan Narrative
FEE [

Remarks:
SENT BY: COPY TO:
Z4 W?
ike Otto
i

North Carolina Department of Environment and Natural Resources
Division of Water Quality
Michael F. Easley, Governor William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
November 9, 2004
DWQ Project # 04-1069
Guilford County
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Wiley A. Sykes, Jr.
Willow Oak Partners, Inc.
405-D Parkway
Greensboro, NC 27404
Subject Property: Tyson Place Subdivision, Greensboro, NC
REQUEST FOR MORE INFORMATION-Stormwater Management Plan
On October 15, 2004, the Division of Water Quality (DWQ) received the revised stormwater management
plan prepared by your engineer, Mr. Homer S. Wade, P.E. of B rum, Wade and Assoc., P.A., to comply
with Condition 4 of the 401 Water Quality Certification issued on ? August 13, 2004. Review of the plans
revealed the following deficiency:
¦ The forebay of the wet detention pond is undersized. Volume is required to be 20% of the total
basin volume. The design submitted is only 13.3% of the total volume.
Please respond within three weeks of the date of this letter by sending three (3) copies this information in
writing. This letter only addresses the stormwater management plan review and does not authorize any
impacts to wetlands or streams until the plans are approved. Please call Cynthia Van Der Wiele, Ph.D. at
919-715-3473 if you have any questions regarding this issue.
Sincerely,
Cyndi B. Karoly
DWQ, 401 Oversite/Express Review Program
CBKlcvd?v
cc: DWQ Winston-Salem Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Central Files
Homer S. Wade, Borum, Wade & Assoc., P.A., 405-D Parkway, Greensboro, NC 27404
Chris Huysman, Wetland & Natural Resource Consultants, Inc., PO Box 224, Newton, NC 28658
401 Wetlands Certification Unit
1650 Mail Service Center, Raleigh, North Carolina 27699.1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] /FAX [phone] /Internet: htto://h2o.enr.state.nc.us/ncwetlands
An Equal Opportunity/Affirmative Action Employer- 50% Recycled/10% Post Consumer Paper
NorthCarolina
Awltrally

BORUM, WADE AND ASSOCIATES, P.A.
621 EUGENE COURT SUITE 100
P.O. BOX 21882
GREENSBORO, NC 27420
PHONE: [phone] - FAX: [phone]
TO: Cynthia Van Der Wiele, PhD
NC Department of Environment and Natural Resources
Division of Water Quality
Wetlands 401 Unit
1650 Mail Service Center
Raleigh, N.C. 27699-1650
Phone: [phone] Ext.
DATE: 2/14/05
RE: Tyson Place - Greensboro
DWQ Project #04-1069
( x ) herewith ( ) under separate cover
TRANSMITTAL LETTER
EE Y\61'1 R3
FEB ? 7 2605
Y
DENR - ?"JAi E;
`S CNv:DS f?;D SiGiu,; ? ?? ('t? EZktJCH
( ) _ Via FAX _ pages including this sheet. This Fax Will be Mailed () Yes () No
For Your:
( x) approval
( ) review & comment
( ) use
The Followina:
Copies Date Descriptions
3 Revised Signed and Notarized Operation and Maintenance
Agreement
3 Revised Worksheet for Water Quality Pond
3 Pond Plan revised
1 Volume Calculations

Remarks:
SENT BY: COPY TO:
ike Otto
Project Name: Tyson Place
Project No. DWQ 041069
Pond 1
SUBMITTED DESIGN:
elevations
Bottom of Basin (ft) 800
Permanent Pool (ft) 808
Temporary Pool (ft) 810.5
areas
Permanent Pool SA (sq ft)
6625
Drainage Area (ac) 11.5
Impervious Area (ac) 4.7

volumes
Permanent Pool (cu ft) 22792
Temporary Pool (cu ft) 19608
Forebay (cu ft) 4894
other parameters
SA/DA 1.275
Orifice Diameter (in) 1.375
Design Rainfall (in) 1
Linear Interpolation of Correct S,,/DA***
% Impervious
Next Lowest 40
Project Impervious 40.9
Next Highest 50
REQUIRED DESIGN:
3.4 average depth
8 ft. depth
2.5 ft. depth
6371 sq. ft.
6015 based on avg depth
40.9 %
17442 cu. ft.
21.5 %
1.27
0.06 cfs drawdown
4.1 day drawdown
8 ft. Permanent Pool Depth
SA/DA fron (Avg. Depth)
1.25 1.175148679
1.27 1.20
1.5 1.469178868
3 ft
010
0F de??h
status
check depth
ok
ok
ok
ok
ok
ok
1.08
1.11
1.43
4
/n,Z5 cb, -?'CqhX)-4
Projccl No. DWQ4-04- I D(o9 (lo be provided by DWQ)
DIVISION OF WATER QUALITY - 401 WET DETENTION BASIN WORKSHEET
DWQ Slormwaler Manaracmnnt Plan Review:
1. PROJECT INFORMATION (please complete the following information):
Project Nafilc : Ow _lpu4ce
Contact Person: C ?ITO Phone Nurnber. 13?L?a '?l • nQ-'],
For pro,ccts with multiple b,Islns, Jpcafy which basin tills worksheet applies to.
Basin Bottom Elevation - 0 It. (average elevation of UIC Iloor of the basin)
Permanent Pool Elevation 0 .O ft. (elevation of the orifice invert out)
Temporary Pool Elevation ?r V • ?J ft. (ClCV3110n Of the OUtICt SI(UCtU(C rnVrt ill)
Permanent Pool Surface Area <<'?'S sq. ft. (water surface area at permanent pool Clevation)
Drainage Area _1Lg ac. (on-site and off-site draimogc to the basin)
Impervious Arca ac. (on-site and off-site draulagC to the basin)
Permanent 1:1001 Volume 22,2 cu. ft. (combined volume of main basin and forebay) F.?.?03
Temporary Pool Volume cu. ft. (volume detained on lop of the permanent pool)
Forcbay Volume cu. ft. ckk 863 - x.1.,20'1
SAIDA used Z? 5
- (surface area to drainage area ratio)
Diameter of Orifice '3 in. (dray down orifice diameter)
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Slormwaler Best Management Practices Manual. Initial in the space
provided to indicate the following design requirements have been filet and supporting documentation is attached. 1f a requirement has
not bcun rncf, alfach an explanation of why. Al a minimum, a complete stormvratr nlanagcmcnl plan submittal includes a workshcct for
each BIVIP, design calculations, plans and specifications showing all BMPs and outlet struclure details, a detailed drainage plan and a
fully executed operalion and maintenance agreement. An incomplete submittal package will result in a request for additional information
and will substantially delay final review and approval of the project
Applicants Initials
The temporary pool controls runoff from the 1 inch storm event.
The basin length to width ratio is greater than 3:1. i
IQ basin side slopes are no sleeper than 3:1. D
?tk ?0 r,(llL Slvh_ A subnlcrgcd'and vegetated prinlctcr shelf at less than 6:1 is provided.
?, Vegetation to the permanent pool elevation is specified.
f
1 ;? An cnlclgcncy drain is provided to drain the basin. Dv/
t? bile pcmnancnt pool depth is between 3 and G feet (required minimum of 3 feel).
?? tr The lcmporary pool drays down in 2 to 5 days. ;' Z
The forebay volume is approxinlalcly equal l0 20% of the total basin volume l3?Sh; l:_^ ??S
?v ,cdlment storage is provided in the pemnanent pool. h'?Srp ;; w'?
Access is ,
piovided o l
A notarized site specific operation and maintenance (O&M) plan is provided.
v_ A vegetation managcmcnVmowing schedule is provided in the O&M plan.
Scnli-annual inspections are spccillud in the OuM plan.
YX C) A debris chccl. Is specified in the OuPr1 plan to be performed after every storm event.
specific sediment clean-out benchmark is listed (elevation or depth) irl O&M plan.
1-A responsible party is dcsignatud in the 0uM plan.
WET [WETLAND] DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
[Wetland maintenance wording is bracketed. Please modify the document as appropriate.]
The wet [wetland] detention basin system is defined as the wet [wetland] detention basin, pretreatment
including forebays and the vegetated filter if one is provided.
Maintenance activities shall be performed as follows:
After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet [wetland] detention basin system for sediment accumulation, erosion, trash
accumulation, vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within
2 to 5 days as designed.
2. Repair eroded areas immediately, re-seed as necessary to maintain good vegetative cover, mow
vegetative cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to
maintain proper functioning.
4. Remove accumulated sediment from the wet [wetland] detention basin system semi-annually or when
depth is reduced to 75% of the original design depth (see diagram below). Removed sediment shall be
disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact
water quality (i.e. stockpiling near a wet [wetland] detention basin or stream, etc.).
The measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments.
When the permanent pool depth reads •7 5 . feet in the main pond, the sediment shall be removed.
[For stormwater wetlands: If the elevation of the marsh areas exceed the permanent pool elevation, the
sediment should be removed to design levels. This shall be performed by removing the upper G inches of
soil and stockpiling it. Then the marsh area shall be excavated six inches below design elevations.
Afterwards the stockpiled soil should be spread over the marsh surface. The soil should not be stockpiled
for more than two weeks.]
When the permanent pool depth reads ? r feet in the forebay [and micro-pool], the sediment shall
be removed.
BASIN DIAGRAM
(fill in the blanks)
V
Sediment F" L-niovai El. $o
Permanent Pool Elevation -SOS-0
Bottom E?rvatiorl $oa T5%
FOREBAY
75%
Sediment Removal Elevation D3 17-5%--
MAIN POND
I'age I of 2
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
[For wetlands: Wetland planting densities in the marsh areas should be maintained by replanting bare
areas as needed. Wetland plants should be encouraged to grow in the marsh areas.]
G.* If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment
through the emergency drain shall be minimized to-the maximum extent practical.
7. All components of the wet [wetland] detention basin system shall be maintained in good working order.
8. Level spreaders or other structures that provide diffuse flow shall be maintained every six months. All
accumulated sediment and debris shall be removed from the structure, and a level elevation shall be
maintained across the entire flow spreading structure. Any down gradient erosion must be repaired and/or
replanted as necessary.
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print name: L. Title: :Ir /N:s
Address:_ NC, 2'1
Phone: 33? 2'15 `D?'l l
Signature:
Date:-/I) - O6-,0O0(_./ U
Note: The legally responsible party should not be a homeowners association unless more than 50% of the
lots have been sold and a resident of the subdivision has been named the president.
J a Notary Public for the State of Nch?+'h CCLr"c- {?•'??f
I, ? 5(11100
County of ?i.? I z?•'<_? , do hereby certify that Lo I t,, A.
personally appeared before me this •`? f-Pn day of and acknowledge the due
execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand and
official seal,
J
1(? iAY1,i
, '?.+?• '?.,, „?' ,.? ? ,,fir,

SEAL
My commission expires L-){ • L? `i- :Z 00 ,
Page 2 or2

ZUU
5

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rn

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70

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P:? " Aj /

Project No. DWQ 4 04 -1 n(,9 (to be provided by DWQ)
DIVISION OF WATER QUALITY - 401 WET DETENTION BASIN WORKSHEET
DWQ Stormwater Management Plan Review:
1. PROJECT INFORMATION (please co plete the following information):
Project Name: T"(5010 9"ce
Contact Person: Mlle. OTTO Phone I
For projects with multiple basins, specify which basin this worksheet applies to:
Basin Bottom Elevation
Permanent Pool Elevation
Temporary Pool Elevation
Permanent Pool Surface Area
Drainage Area
Impervious Area
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
SAIDA used
Diameter of Orifice
d ft. (average elevation of the floor of the basin)
65. o ft.
$ O. ft. (elevation of the orifice invert out)
(elevation of the outlet structure invert in)
4Psco15 sq. ft. (water surface area at permanent pool elevation)
11.5 ac. (on-site and off-site drainage to the basin)
.'1 b
ac. (on-site and off-site drainage to the basin)
+
J)
`0
514
6
cu. ft. (combined volume of main basin and forebay)
104,40,9 cu. ft. (volume detained on top of the permanent pool)
cu. ft.
1.,215 (surface area to drainage area ratio)
in. (draw down orifice diameter)
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual. Initial in the space
provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has
not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for
each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a
fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information
and will substantially delay final review and approval of the project
Applicants Initials
The temporary pool controls runoff from the 1 inch storm event.
The basin length to width ratio is greater than 3:1.
The basin side slopes are no steeper than 3:1.
5CCNb(4LC1\49_ A submerged'and vegetated perimeter shelf at less than 6:1 is provided.
Vegetation to the permanent pool elevation is specified.
An emergency drain is provided to drain the basin.
The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
The temporary pool draws down in 2 to 5 days.
LA6n The forebay volume is approximately equal to 20% of the total basin volume.
o Sediment storage is provided in the permanent pool.
Qb Access is provided for maintenance.
VI boo A notarized site specific operation and maintenance (0&M) plan is provided.
A vegetation management/mowing schedule is provided in the 0&M plan.
Semi-annual inspections are specified in the 0&M plan.
O A debris check is specified in the 0&M plan to be performed after every storm event.
A specific sediment clean-out benchmark is listed (elevation or depth) in 0&M plan.
A responsible party is designated in the 0&M plan.

?.; T 1 5 zr -
Z ATER
WET [WETLAND] DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
[Wetland maintenance wording is bracketed. Please modify the document as appropriate.]
The wet [wetland] detention basin system is defined as the wet [wetland] detention basin, pretreatment
including forebays and the vegetated filter if one is provided.
Maintenance activities shall be performed as follows:
After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet [wetland] detention basin system for sediment accumulation, erosion, trash
accumulation, vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within
2 to 5 days as designed.
2. Repair eroded areas immediately, re-seed as necessary to maintain good vegetative cover, mow
vegetative cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to
maintain proper functioning.
4. Remove accumulated sediment from the wet [wetland] detention basin system semi-annually or when
depth is reduced to 75% of the original design depth (see diagram below). Removed sediment shall be
disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact
water quality (i.e. stockpiling near a wet [wetland] detention basin or stream, etc.).
The measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments.
When the permanent pool depth reads S6LO feet in the main pond, the sediment shall be removed.
[For stormwater wetlands: If the elevation of the marsh areas exceed the permanent pool elevation, the
sediment should be removed to design levels. This shall be performed by removing the upper 6 inches of
soil and stockpiling it. Then the marsh area shall be excavated six inches below design elevations.
Afterwards the stockpiled soil should be spread over the marsh surface. The soil should not be stockpiled
for more than two weeks.]
When the permanent pool depth reads %C?1- 0 feet in the forebay [and micro-pool], the sediment shall
be removed.
BASIN DIAGRAM
(fill in the blanks)
p Permanent Pool Elevation $O$'O
Sediment moval El. $oZ`c 75%
-------------- -- Sediment Removal Elevation $0 --0 175%
Bottom E vation ?,o ------ --------------------------------
Rnttnm Flavatinn 9ce>o 7r, 0/
FOREBAY MAIN POND
Pagel of 2
BORUM, WADE AND ASSOCIATES, P.A.
ENGINEERS - PLANNERS - SURVEYORS
405-D PARKWAY GREENSBORO, NC 27401
PHONES: 275-0471 - FAX: [phone]
PROJECT NAME
PROJECT N . SHEET
BY " ATE
CHECKED DATE
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Trapezoidal Channel Analysis & Design
Open Channel - Uniform flow
Worksheet Name:
Comment : Channel @ Discharge Point CMaY,
Solve For Discharge
Given Input Data:
Bottom Width.....
Left Side Slope..
Right Side Slope.
Manning's n......
Channel Slope....
Depth............
Computed Results:
Discharge........
Velocity.........
Flow Area........
Flow Top Width...
Wetted Perimeter.
Critical Depth...
Critical Slope...
Froude Number....
10.00 ft
3.00:1 (H:V)
3.00:1 (H:V)
0.030
0.0100 ft/ft
2.20 ft
239.89 cfs
6.57 fps
36.52 sf
23.20 ft
23.91 ft
2.10 ft
0.0119 ft/ft
0.92 (flow is Subcritical)
Open Channel Flow Module, Version 3.08 (c) 1990
Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708
Trapezoidal Channel Analysis & Design
Open Channel - Uniform flow
Worksheet Name:
Comment: ??i V)Sjre- o-?UC4)r a `QISC?tbYL ?, 1810T
Solve For Depth
Given Input Data:
Bottom Width..... 10.00 ft
Left Side Slope.. 3.00:1 (H:V)
Right Side Slope. 3.00:1 (H:V)
Manning's n...... 0.030
Channel Slope.... 0.0100 ft/ft
Discharge........ 164.20 cfs
Computed Results:
Depth............
Velocity.........
Flow Area........
Flow Top Width...
Wetted Perimeter.
Critical Depth...
Critical Slope...
Froude Number....
1.81 f
5.90 fps
27.84 sf
20.83 ft
21.42 ft
1.70 ft
0.0126 ft/ft
0.90 (flow is Subcritical)
Open Channel Flow Module, Version 3.08 (c) 1990
Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708
Trapezoidal Channel Analysis & Design
Open Channel - Uniform flow
Worksheet Name:
Comment : PbST btu .OQP?IF.•?l`r E)r--/ v4f 1?oj mT
Solve For Depth
Given Input Data:
Bottom Width..... 10.00 ft
Left Side Slope.. 3.00:1 (H:V)
Right Side Slope. 3.00:1 (H:V)
Manning's n...... 0.030
Channel Slope.... 0.0100 ft/ft
Discharge........ 185.80 cfs
Computed Results:
Depth............
Velocity.........
Flow Area........
Flow Top Width...
Wetted Perimeter.
Critical Depth...
Critical Slope...
Froude Number....
i 1.9Pf t
6.1 ps
30.40 sf
21.56 ft
22.19 ft
1.82 ft
0.0123 ft/ft
0.91 (flow is Subcritical)
Open Channel Flow Module, Version 3.08 (c) 1990
Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708
BORUM, WADE AND ASSOCIATES, P.A.
ENGINEERS - PLANNERS - SURVEYORS
PROJECT NAME
PROJECT NO. SHEET OF
405-D PARKWAY GREENSBORO, NC 27401 BY DATE
PHONES: 275-0471 - FAX: [phone] CHECKED DATE
4 ?s
3cl .1?FS
Fos
4q . t.- X42.4 c,
.5?s
S

a? r C?a I:zl
r r N O
4
Trapezoidal Channel Analysis & Design
Open Channel - Uniform flow
Worksheet Name: ?yf p
`?Gb
Comment : M?bC GV\-&QvkF L C-ghr, ? Q &
Solve For Discharge
Given Input Data:
Bottom Width.....
Left Side Slope..
Right Side Slope.
Manning's n......
Channel Slope....
Depth............
Computed Results:
Discharge........
Velocity.........
Flow Area........
Flow Top Width...
Wetted Perimeter.
Critical Depth...
Critical Slope...
Froude Number....
6.00 ft
6.00:1 (H:V)
6.00:1 (H:V)
0.030
0.0100 ft/ft
3.10 ft
547.42 cfs
7.18 fps
76.26 sf
43.20 ft
43.71 ft
3.03 ft
0.0111 ft/ft
0.95 (flow is Subcritical)
Open Channel Flow Module, Version 3.08 (c) 1990
Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708
Trapezoidal Channel Analysis & Design
Open Channel - Uniform flow
Worksheet Name:
Comment : "",& ' .? 1?? t ?r (9 jor0?4 o-r
Solve For Depth
Given Input Data:
Bottom Width.....
Left Side Slope..
Right Side Slope.
Manning's n......
Channel Slope....
Discharge........
6.00 ft
6.00:1 (H:V)
6.00:1 (H:V)
0.030
0.0100 ft/ft
392.70 cfs
Computed Results:
Depth............
Velocity.........
Flow Area........
Flow Top Width...
Wetted Perimeter.
Critical Depth...
Critical Slope...
Froude Number....
269 ft
ps
59.52 sf
38.27 ft
38.71 ft
2.60 ft
0.0116 ft/ft
0.93 (flow is Subcritical)
Open Channel Flow Module, Version 3.08 (c) 1990
Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708
Trapezoidal Channel Analysis & Design
Open Channel - Uniform flow
Worksheet Name:
Comment: FDS"f Q `07 iblmT
Solve For Depth
Given Input Data:
Bottom Width.....
Left Side Slope..
Right Side Slope.
Manning's n......
Channel Slope....
Discharge........
Computed Results:
Depth............
Velocity.........
Flow Area........
Flow Top Width...
Wetted Perimeter.
Critical Depth...
Critical Slope...
Froude Number....
6.00 ft
6.00:1 (H:V)
6.00:1 (H:V)
0.030
0.0100 ft/ft
409.50 cfs
2.74 f
.67 fps
61.41 sf
38.86 ft
39.31 ft
2.65 ft
0.0115 ft/ft
0.93 (flow is Subcritical)
Open Channel Flow Module, Version 3.08 (c) 1990
Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708
BORUM, WADE AND ASSOCIATES, P.A.
ENGINEERS - PLANNERS - SURVEYORS
405-D PARKWAY GREENSBORO, NC 27401
PHONES: 275-0471 - FAX: [phone]
OF
PROJECT NAME
PROJECT NO.
BY
CHECKED _
SHEET
DATE
DATE_
800
VZj? -srooT`TN`t SreG116?J
-41
f ELEV
9.00
Trapezoidal Channel Analysis & Design
Open Channel - Uniform flow
Worksheet Name:
Comment : CHANNEL @ REP. SECT. #1
C
GA Ql?l'
Solve For Discharge
Given Input Data:
Bottom Width.....
Left Side Slope..
Right Side Slope.
Manning's n......
Channel Slope....
Depth............
6.00 ft
2.00:1 (H:V)
3.00:1 (H:V)
0.030
0.0100 ft/ft
3.70 ft
Computed Results:
Discharge........ 468.81 cfs
Velocity......... 8.31 fps
Flow Area........ 56.43 sf
Flow Top Width... 24.50 ft
Wetted Perimeter. 25.97 ft
Critical Depth... 3.64 ft
Critical Slope... 0.0108 ft/ft
Froude Number.... 0.96 (flow is Subcritical)
Open Channel Flow Module, Version 3.08 (c) 1990
Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708
Trapezoidal Channel Analysis & Design
Open Channel - Uniform flow
el -O?Af
Worksheet Name: ?(L rD r-
Nv
Comment: CHANNEL @ REP. SECT. #1
Solve For Depth
Given Input Data:
Bottom Width.....
Left Side Slope..
Right Side Slope.
Manning's n......
Channel Slope....
Discharge........
Computed Results:
Depth............
Velocity.........
Flow Area........
Flow Top Width...
Wetted Perimeter.
Critical Depth...
Critical Slope...
Froude Number....
6.00 ft
2.00:1 (H:V)
3.00:1 (H:V)
0.030
0.0100 ft/ft
189.00 cfs
2.40 ft
6.55 fps
28.85 sf
18.01 ft
18.97 ft
2.29 ft
0.0122 ft/ft
0.91 (flow is Subcritical)
Open Channel Flow Module, Version 3.08 (c) 1990
Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708
Trapezoidal Channel Analysis & Design
Open Channel - Uniform flow
Worksheet Name : Tt6T ?Z\ALoPq-
vVT
Comment: CHANNEL @ REP. SECT. #1
Solve For Depth
Given Input Data:
Bottom Width.....
Left Side Slope..
Right Side Slope.
Manning's n......
Channel Slope....
Discharge........
Computed Results:
Depth............
Velocity.........
Flow Area........
Flow Top Width...
Wetted Perimeter.
Critical Depth...
Critical Slope...
Froude Number....
6.00 ft
2.00:1 (H:V)
3.00:1 (H:V)
0.030
0.0100 ft/ft
210.60 cfs
2;5 3 ft
4 ps
31.24 sf
18.67 ft
19.67 ft
2.42 ft
0.0120 ft/ft
0.92 (flow is Subcritical)
Open Channel Flow Module, Version 3.08 (c) 1990
Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708
BORUM, WADE AND ASSOCIATES, P.A.
ENGINEERS - PLANNERS - SURVEYORS
PROJECT NAME
PROJECT NO. SHEET OF
405-D PARKWAY GREENSBORO, NC 27401 BY DATE
PHONES: 275-0471 FAX: [phone] CHECKED DATE
ii, LESS
r
.
?' a
,90
,80
„o
rUM ELEV

765.00
Trapezoidal Channel Analysis & Design
Open Channel - Uniform flow
Worksheet Name : M Kc CO,AC t-? 1
Comment: CHANNEL @ REP. SECT. #2
Solve For Discharge
Given Input Data:
Bottom Width.....
Left Side Slope..
Right Side Slope.
Manning's n......
Channel Slope....
Depth............
Computed Results:
Discharge........
Velocity.........
Flow Area........
Flow Top Width...
Wetted Perimeter.
Critical Depth...
Critical Slope...
Froude Number....
6.00 ft
3.00:1 (H:V)
3.00:1 (H:V)
0.030
0.0100 ft/ft
3.30 ft
406 cfs
7.74 fps
52.47 sf
25.80 ft
26.87 ft
3.23 ft
0.0110 ft/ft
0.96 (flow is Subcritical)
Open-Channel Flow Module, Version 3.08 (c) 1990
Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708
Trapezoidal Channel Analysis & Design
Open Channel - Uniform flow
Worksheet Name:
(-
Comment: CHANNEL @ REP. SECT. #2
Solve For Depth
Given Input Data:
Bottom Width..... 6.00 ft
Left Side Slope.. 3.00:1 (H:V)
Right Side Slope. 3.00:1 (H:V)
Manning's n...... 0.030
Channel Slope.... 0.0100 ft/ft
Discharge........ 283.90 cfs
Computed Results:
Depth............
Velocity.........
Flow Area........
Flow Top Width...
Wetted Perimeter.
Critical Depth...
Critical Slope...
Froude Number....
2.80 ft
7.05 fps
40.25 sf
22.78 ft
23.69 ft
2.70 ft
0.0115 ft/ft
0.94 (flow is Subcritical)
Open Channel Flow Module, Version 3.08 (c) 1990
Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708
Trapezoidal Channel Analysis & Design
Open Channel - Uniform flow
Worksheet Name : Q?.•?,,?.
Comment: CHANNEL @ REP. SECT. #2
Solve For Depth
Given Input Data:
Bottom Width.....
Left Side Slope..
Right Side Slope.
Manning's n......
Channel Slope....
Discharge........
Computed Results:
Depth............
Velocity.........
Flow Area........
Flow Top Width...
Wetted Perimeter.
Critical Depth...
Critical Slope...
Froude Number....
6.00 ft
3.00:1 (H:V)
3.00:1 (H:V)
0.030
0.0100 ft/ft
262.30 cfs
C2L?..971 fps
37.96 sf
22.17 ft
23.05 ft
2.60 ft
0.0117 ft/ft
0.93 (flow is Subcritical)
Open Channel Flow Module, Version 3.08 (c) 1990
Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708
MEMORANDUM
TO: John Dorney Regional Contact:
Non-Discharge Branch WQ Supervisor:
Date:
SUBJECT: WETLAND STAFF REPORT AND RECOMMENDATIONS
Facility Name Tyson Place : Rustykat Court c/o Willow Oaks
Project Number 04 1069
Recvd From APP
Received Date 6/30/04
Recvd By Region
Project Type road crossing
County Guilford
County2
Region Winston-Salem
Certificates Stream
Permit Wetland Wetland Wetland Stream Class Acres Feet
Type Type Impact Score Index Prim. Supp. Basin Req. Req.
F39 Stream P7 O N 16-11-(3.5) WSIII CA NSW 30,602. F 132.00
F-r- O Y _0N rF_ [--F-- F_ F_ F_
Mitigation Wetland
MitigationType Type Acres Feet
Is Wetland Rating Sheet Attached? ®0 Y 0 N Did you request more info? 0 Y 0 N
Have Project Changes/Conditions Been Discussed With Applicant? Q Y 0 N
Is Mitigation required? 0 Y @ N Recommendation: 0 Issue 0 Issue/fond 0 Deny
Provided by Region: Latitude (ddmmss) 360826 Longitude (ddmmss) 794709
Comments:
Site visit made on 08/04/2004. Site is 10 acres in size and has been timbered and graded. Prior to
clearing, the site was forested and is surrounded by residential neighborhoods. A perennial stream
bisects the site and is mapped as a blue-line stream on the USES topo for this area. This stream is
an unnamed tributary to Lake Townsend and is classified WS-III-NSW_ SA. Water supply
watershed vegetated buffers apply to this stream. The proposed impact is required for a road
crossing and consists of 90 If of 60" RGP culvert, - 20 If of riprap for outlet protection, and - 20 If of
unculverted, relocated channel. Headwalls will be utilized at both ends of the culvert in order to
reduce the impact. The total impact to the stream is 182 If. A sewer line installed more than 10
years ago parallels the stream. This sewer line will necessitate a relocation of the impacted reach of
the channel - 20 If westward. There will be no net gain or loss of channel as a result of this
realignment. This road crossing is necessary to access the western end of the site since the City _n
Greensboro will not allow access from Painter Boulevard (currently under
cc: Regional Office
Central Office Page Number 1
Facility Name Tyson Place : Rustykat Court c/o Willow Oaks County Guilford
Project Number 04 1069
Regional Contact: Daryl Lamb
Date: 8/12/2004
Comments (continued from page 1):
construction) which runs along the site's western boundary. The acce ss road is being built as an
extension of an existing residential street. No other impacts are propo sed or anticipated in the future.
Applicant's effort to mini mize impacts is acreutable. Impervious area at buildout will exceed 30% of
site's area The applica nt is proposing to manage stormwater by cons tructing a_0.15 acre d t .ntion
pond in the upland area. This is reported to be required by the City of Greensboro for this watershed
area City of Greensbor o also requires a 100' vegetated setback on b oth sides of this stream as
mandated by NCAQ 15A (1(Q). The impacts to this buf
2B .0215 (3)(bl fer associated with the
proposed crossing are a r
llowable under NQAC 15A 2B .0215 (3)(b)(i)(H ). No public monies will be
used for this proi ct On 07/30/2004, the USACE issued the applicant an authorization to use NWP
39 for this impact Auth orization to use WQC# 3402, with additional co nditions, will be issued by
WSRO
cc: Regional Office Page Number 2
Central Office
H

n
c-{
77

--

1
I
\/
rJ
,,,ern
^jqL f1
0F WNA Michael F. Easley, Governor
?

f William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources

'' •'~ ''' Alan W. Klimek, P.E. Director
Division of Water Quality
August 13, 2004
DWQ# 04-1069
Guilford County
Mr. Wiley A. Sykes, Jr.
Willow Oaks Partners, Inc.
405-D Parkway WETLANDS/ 401 GROUP
Greensboro, NC, 27404
APPROVAL of 401 Water Quality Certification with Additional Conditions AUG 1 9:2004
Dear Mr. Sykes: WATER QUALITY SECTION
Willow Oaks Partners, Inc. has our approval, in accordance with the attached conditions, to place permanent
fill in 132 linear feet of perennial stream in order to construct a road crossing for the Tyson Place Subdivision
located off of Woodberry Lake Drive in Greensboro, Guilford County, as described in your application
received by the Division of Water Quality (DWQ) on June 30, 2004. After reviewing your application, we
have determined that this fill is covered by General Water Quality Certification Number 3402, which can be
viewed on our web site at http://h2o.enr.state.nc.us/ncwetiands. This Certification allows you to use
Nationwide Permit Number 39 when it is issued by the U.S. Army Corps of Engineers. In addition, you
should secure any other applicable federal, state or local permits before you proceed with your project,
including (but not limited to) those required by Sediment and Erosion Control, Non-Discharge, and Water
Supply Watershed regulations. Also, this approval will expire when the accompanying 404 permit expires
unless otherwise specified in the General Certification.
This approval is valid only for the purpose and design that you have described in your application. If you
change your project, you must notify us in writing, and you may be required to send us a new application for
a new certification. If the property is sold, the new owner must be given a copy of the Certification and
approval letter and is thereby responsible for complying with all conditions. If total wetland fills for this project
(now or in the future) exceed one acre, compensatory mitigation may be required as described in 15A NCAC
2H .0506 (h). For this approval to be valid, you must follow the conditions listed in the attached
certification, as well as the additional conditions listed below:
The 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
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).
2. 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 stream bottom must be inserted into the bottom matrix to a depth
?ne hCaroI in a
Naturally
North Carolina Division of Water Quality
Wetlands Certification Unit 1650 Mail Service Center Raleigh, NC 27699-1650 Phone [phone] FAX [phone]
2321 Crabtree Blvd. Raleigh, NC 27604-2260 Internet ht1p/1:h2o enr.state.nc.us/ncwetlands
Customer Service Number: 1-877-623-6748
An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper
sufficient to provide the thickness of riprap required for scour protection. The elevation of the stream
bottom 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 any crossing.
3. If concrete is used with any fill material, it shall not be allowed to come in contact with surface waters
until it has cured.
4. A final, written stormwater management plan shall be approved in writing by this Office before the
impacts specified in this Certification occur per condition no. 4 in General Certification 3402. The
stormwater management plan must include plans and specifications for stormwater management
facilities that are appropriate for surface waters classified as Class WS-III; NSW, CA and designed to
remove 85% TSS according to the most recent version of the NC DENR Stormwater Best Management
Practices Manual. These facilities must be designed to treat the runoff from the entire project, unless
otherwise explicitly approved by the Division of Water Quality. Also, before any permanent building is
occupied at the subject site, the facilities (as approved by this Office) shall be constructed and
operational, and the stormwater management plan (as approved by this Office) shall be implemented.
The structural stormwater practices as approved by this Office as well as drainage patterns must be
maintained in perpetuity. No changes to the structural stormwater practices shall be made without
written authorization from the Division of Water Quality. The stormwater controls proposed for this
project shall utilize DWQ design and construction criteria for any required detention ponds. Stormwater
energy dissipation and sheet-flow shall be obtained through the use of level spreaders, which conform
to DWQ design and construction criteria.
5. Upon finishing the project, the Applicant shall fill out and return the enclosed "Certificate of Completion"
to notify NCDWQ when all work included in the §401 Certification has been completed. This certificate
should be returned to the 401/Wetlands Unit of the NC Division of Water Quality at the address listed
on the form. Along with the Certificate of Completion, please send photographs upstream and
downstream of each 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 150B of the North Carolina General Statutes to the Office of Administrative
Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This certification and its conditions are final
and binding unless you ask for a hearing.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If
you have any questions, please telephone Daryl Lamb in the DWQ Winston-Salem Regional Office at 336-
771-4600 or Cyndi Karoly in the Central Office in Raleigh 919-733-9721.
Sincerely,
FO 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
Chris Huysman, Wetland and Natural Resource Consultants, Inc., P. O. Box 224, Newton, NC 28658
3 Complete items 1, 2, and 3. Also complete
item 4 if Restricted Delivery is desired.
1 Print your name and address on the reverse
so that we can return the card to you.
I Attach this card to the back of the mailpiece,
or on the front if space permits.
Article Addressed to: - -- `' .> U ` J-
Willow Oak Partners, Inc.
405-D Parkway
Greensboro, NC 27404
DWQ# 04-1069 - Guildford
A. Signature
X
B. Received by (Printed Nye) C.
NS Agent
t l Addresse(
D. Is delivery address different from Rom 1? ? Ye
If YES, enter delivery address below: We
3. Service Type
C4 Certified Mail ? Express Mail
? Registered X Return Receipt for Merchandis(
? Insured Mail ? C.O.D.
4. Restricted Delivery? (Extra Fee) ?'Yes
Article Number 7004 1160 0002 2706 6165
(Transfer from service label) ?e?r
NITED STATES POSTAL SERVICE
LISPS
iu
• Sender: Please print your name, address, and ZIP+4 in this box •
NC DENR Division of Water Quality
Wetlands/401 Certification Unit
2321 Crabtree Boulevard, Suite 250
Raleigh, NC 27604
First-Class Mail
Postage & Fees Paid
Permit No. G-10
I I I I I I I I I I I I 11111111111 t I 1 I I 1111
W A r
p?pF
FgPG Michael F. Easley, Governor
William G. Ross Jr., Secretary
r North Carolina Department of Environment and Natural Resources
> -I
Alan W. Klimek, P.E. Director
Division of Water Quality
August 13, 2004
DWQ# 04-1069
Guilford County
Mr. Wiley A. Sykes, Jr.
Willow Oaks Partners, Inc.
405-D Parkway WETLANDS/ 401 GROUP
Greensboro, NC, 27404
APPROVAL of 401 Water Quality Certification with Additional Conditions AUG Y 92004
Dear Mr. Sykes: WATER QUALITY SECTION
Willow Oaks Partners, Inc. has our approval, in accordance with the attached conditions, to place permanent
fill in 132 linear feet of perennial stream in order to construct a road crossing for the Tyson Place Subdivision
located off of Woodberry Lake Drive in Greensboro, Guilford County, as described in your application
received by the Division of Water Quality (DWQ) on June 30, 2004. After reviewing your application, we
have determined that this fill is covered by General Water Quality Certification Number 3402, 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 39 when it is issued by the U.S. Army Corps of Engineers. In addition, you
should secure any other applicable federal, state or local permits before you proceed with your project,
including (but not limited to) those required by Sediment and Erosion Control, Non-Discharge, and Water
Supply Watershed regulations. Also, this approval will expire when the accompanying 404 permit expires
unless otherwise specified in the General Certification.
This approval is valid only for the purpose and design that you have described in your application. If you
change your project, you must notify us in writing, and you may be required to send us a new application for
a new certification. If the property is sold, the new owner must be given a copy of the Certification and
approval letter and is thereby responsible for complying with all conditions. If total wetland fills for this project
(now or in the future) exceed one acre, compensatory mitigation may be required as described in 15A NCAC
2H .0506 (h). For this approval to be valid, you must follow the conditions listed in the attached
certification, as well as the additional conditions listed below:
The 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
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).
2. 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 stream bottom must be inserted into the bottom matrix to a depth
o One
NhCarohna
Natuna!!y
North Carolina Division of Water Quality t*
Wetlands Certification Unit 1650 Mail Service Center Raleigh, NC 27699-1650 Phone [phone] FAX [phone]
2321 Crabtree Blvd. Raleigh, NC 27604-2260 Internet htto//:h2o.enr.state.nc.us/ncwetlands
Customer Service Number: 1-877-623-6748
An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper
sufficient to provide the thickness of riprap required for scour protection. The elevation of the stream
bottom 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 any crossing.
3. If concrete is used with any fill material, it shall not be allowed to come in contact with surface waters
until it has cured.
4. A final, written stormwater management plan shall be approved in writing by this Office before the
impacts specified in this Certification occur per condition no. 4 in General Certification 3402. The
stormwater management plan must include plans and specifications for stormwater management
facilities that are appropriate for surface waters classified as Class WS-III; NSW, CA and designed to
remove 85% TSS according to the most recent version of the NC DENR Stormwater Best Management
Practices Manual. These facilities must be designed to treat the runoff from the entire project, unless
otherwise explicitly approved by the Division of Water Quality. Also, before any permanent building is
occupied at the subject site, the facilities (as approved by this Office) shall be constructed and
operational, and the stormwater management plan (as approved by this Office) shall be implemented.
The structural stormwater practices as approved by this Office as well as drainage patterns must be
maintained in perpetuity. No changes to the structural stormwater practices shall be made without
written authorization from the Division of Water Quality. The stormwater controls proposed for this
project shall utilize DWQ design and construction criteria for any required detention ponds. Stormwater
energy dissipation and sheet-flow shall be obtained through the use of level spreaders, which conform
to DWQ design and construction criteria.
5. Upon finishing the project, the Applicant shall fill out and return the enclosed "Certificate of Completion"
to notify NCDWQ when all work included in the §401 Certification has been completed. This certificate
should be returned to the 401/Wetlands Unit of the NC Division of Water Quality at the address listed
on the form. Along with the Certificate of Completion, please send photographs upstream and
downstream of each 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 150B of the North Carolina General Statutes to the Office of Administrative
Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This certification and its conditions are final
and binding unless you ask for a hearing.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If
you have any questions, please telephone Daryl Lamb in the DWQ Winston-Salem Regional Office at 336-
771-4600 or Cyndi Karoly in the Central Office in Raleigh 919-733-9721.
Sincerely,
f Alan W. Klimek, P.E.
AW K/cdl
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
Chris Huysman, Wetland and Natural Resource Consultants, Inc., P. O. Box 224, Newton, NC 28658
Fvi
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812.0 10,114 5F 05 FT 40A44 CF 0.92 I i 1H ~ / / I I 1 t
4' MIN. IIP65 5F 05 FT 4 5'W x SL x I'D
CONCRETE FOOTING UT-OFF TRENCH EMER&ENCY 8125 11,356 5F 612b Ilb54 5F 05 FT. OS FT. 45,811 CF LOS -~J / / / GUAUFT \ \ `I I I I I' ' l I / , a I M ~ \
OF DAM 5PILLWAY 813.0 11,852 5F PRINCIPLE SPILLWAY DEPTH BY ENGINEER 12,510 5F 1.0 FT. 1.0 FT. 58,441 ( F 1.34
814D 13,188 5F 13,5015E 05 FT E 05 FT 65)44 GF 150 ` \ \ I I 1 \ t
48' G.A.P. TRASH RACK r x r x V!T 8145 3426 5F 44
W/ EXPANDED ALUMINUM TOP AL~ WAf WWOM \
b"X 6" SPACING 48" GA.P. TRASH RACK 812.8 ~ 814b 1 ~ y
ON BARS \ \ \ \ /r / i T f I I
ANTI-VORTEX 2.3' N~ WFLE"E pAF" TO R FBVMAI®WM A"49tv aY ravw, vft ppmrTs IN x N{' %DTW las
PLATES - 810.5 OK+e cdfm VuZTIGA"y I ~IOEK L9G111 IN . 7D'
3.0' ELEV.; W7D 01.5 0 0 0 0 0 0 0
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24" G.A.P. 5 0 0 0 0 0 0
' RISER - I 0 0 0 0 oar-o o ~I
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TRAM RACK DETAIL
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8128 2' GRA55 LINED 5PILLWAY L1C NETT N& NOT NECE55ARY WATERS RTS ~0~~ PLAN 1) THE OV*O2 SHALL BE i2Er°PON311-E FOR N 6OVeIN6 T'4 C. OeFI TED V PS~ WATERSHED, GRENSBORO - !^lg-III-WGA-TIER 4 WAT62 QUALITY POND AS D± R'D ~3Y 1}E 6aVL_ >~1TAL OPFK•E tN1N6 :-LAK
SQIA+I. TQT/U- SITE _AREA, 15b9t ACRES SCALE I* = 30' 2) jR15DIG TIOW R QTY Q47rE SHALL HAVE FULL DESIGN UME P
Y SPILLWAY TOTAL 1 TOTAL DRAINAGE AREA. Ilst ACRES POW voL\/AJLABLE PRIOR TO ANY pt_AT AT RE OF CElZH IIS OF THIS NGY FOR SITE AND/OR
- - BUILT-U BUI44 LOTSLTAFON 05000 AREA 00 ON 5-FA-0T 51TE, OT = 3 410t .03 AG. ACRES PRIOR TO ANY PLEGORDATN7!!I FOI FogE Ti!e NM THIS MAY REAUIRE THE GLgM10UT
1. CONTRACTOR TO PROVIDE EN611EZ WITH SHOP PTO R15L ZMARREL 44 L( EWNSYf
ASSEMBLY BY MANUFACTURER BEFORE ORDBtM6 ROAL ROADWAYS - 1.46 AC. AND 171542105AL OF SEDIMENT FROM PR TION MEETING VITH THE CITY OF BORr0 WATER9HED 811& NEER V*eN THE PERMANENT WATTS 0IA1At-TTY POND SITE
WALKS - 021 AG. 5) THE CONTRACTOR SMALL 5C.1'fEVLLg 6RM HAS BEEN CLEARED AND THE POND FIELD STAKED.
2. CONTRACTOR TO ALLOw ON SITE Ir>sPECna+oF RI5EW8IJiRE1 ASSEMBLE 5PILLWAY DETAILS KAL.
N.T.S. PRIOR TO INSTALLATION. BUILT-U BUILT-UPON AREA, 41% OF DRAINAGE AREA TO POND 4) THE 60YER iiNT OFFICE HAYF16 .A~t15E)IGT10N FOR WATT PROTECTION AND B.U.A. - OO Al, ' O% OF DRAINAGE AREA TO POND THE!R A551GIEi HAVE RIGHT OF AGGe55 TO THE PERMANENT WATER QUALITY POND
oFFSIn pFF51TE DRAINAGE
PERMANENT SEDIMENT STORAGE READ, 1/6' * ITS AG. = 5,218 r--F-' FOR INSPECTION AND INSTALLED ITENANGE OF G
rim PrxMAlA ~A PERMANENT 5EDIMIENT STORAGE PRVD, - O . F.I N B T O E OF W BASIN 5) FFINAL INALIIA OF THE 6RADPERMIT OR AT 1IS ANGE OFF THE WILNAL BUtLDINC RE'D AT (GOLATM
PERMA PERMANENT POOL V5lwN, 5.0 FT. CERTIFICATE OF OCCUPANCY MPLIANiGE), WHICHEVER COMES V
11E POW Al A Nt6bRJR BASIS udDK ne Hop" 9F1601i (APPd amee+l Ag IECE56IRf, aneRA A660C1Ar O1N TO tONIRA4r TM MOM "M &L pirp6 qWWWW POOL SURFACE AREA 70 DRAINAGE AREA RATIO: 1215 b) CONTRACTOR SHALL PRESENT SHOP DRAWIN65 OF THE POND KIT T TO O DESIGN
5) Dm 11110ww PCb1 POND SURFACE AREA REQUIRED, 6,381 5F ENGINEER PRIOR TO BEGINNING CON5TRIJGTION OF POND.
NO" A" 1RA511 ND DERLSFRON POND AND SNNtddDN6 81N516PEGT ORFKf 1RASN BNAD AT SPd1iNY AN) RB4T E DEEWS A6 . IEPEGr NOIttH Y, OR AFIBI MA UR 5ipW5. (tEPEOT LN Bf Wets A560G1hT ON ~tESENTAT Vf1. POND POND CE AREA PROVIDED, 6 625 SF 1) THE ONPIER OF THE PO[V SHALL BE RE5PON5JBLE FOR PROVIDING A PUMP POND SURFACE NT FROM THE POND.
6) Loom am MLOVA RV = 0 UR + A X (I) TO DRAIN THE POND WHEN REQUIRED FOR REMOYIN6 THE 5W It-IF
NFAR 8t 1m16 aft SODDIK AS SOON AFRR mmTKN 16 FD56DR 0 IB6 ASSOVATION I8RVEITATw0. RV o C RV = 0.05 + 0.009 X (1) = 0.42 TWIN EMERZANiCY SITUATION AND ADDITIONAL MAINTENANCE AS REQUIRED.
p) Fewm A660OmVIO I' TNE~~S ~ 1NW12 NOIS OF RWAU N 24 WOIAR ? OR APM fXTWW PWbW5 OF WW MGFE MW 2 r0 3 DAYS). LOCK FOR V~ TO NET CAWM A 5PIWMYS, O®RI5 MIXF AT 5RWNY NO TRAW OPM ND BMW OR %i*#W E6AN?6!'15. RV = C VOLUM VOLUME = (DE516N RANFALL) X (Rv) X (DRAINAGE AREA)
VOLU'I VOLUME = I" RAINFALL X 0.42 IN/N X 1/12 FEETANCHE5 X 115 AGRE5 = 11,563 OF
W REm ND now TEMPO TEMPORARY WATER QUALITY 5TORAGE REGIARED, 11,563 GF THE STORlftknR PAW NO DAM SHOW ON THIS"SATISFIES WaNdHINTS OF TIE TEMPORARY WATER QUALITY 5TORAGE PROVIDED= 19 608 OF NORTH GAROLNA DAN SAFETY LAM OF M61 [A6 N4 1110" 14451 NO TIE RI E5
i~ IY091N1llIOND M7T P96fl1CAd19CNWENF911R N SPNI YNYA RE6Id?R M"46 WLL PjeAW INIWNRD 6RONDl (OHM ASGOGIATION TATIVO ?f1 0
POND DATA NO WA AT0 5 A5 IRESB1TED IN THE NORTH CI#MNU ADI*NSWAn GODS TW MA, WX*WA R R 2K - DAM SAFETY. EVBI IN THE GAGE YltEi2E THE DAM 514" ON TINS PLAN 15
04"IENE KW dp*M ALd1E a.oa1A owRA PW-OXPA110R ANIAL "SM I!% %MV BE AOD~ WIN I* 60Aq*W TIL @frE MVN6 ,ARSDICTION FOR NAT9toAED PF'OlWT1011 ON AR A5 I+97 6A66. 50.UIIOI6 r011E5E 1wE6 OF PROBlB45'JgND IM Ipl{AEI'K.AL MO DLL SAFE r FAIDB111/16ILmWRPLY pgomm APR.IGAnOK 807701 BOTTOM ELEV. =803.0 DETE;&t)ED BY TIE STATE TO W EXDPf FROM TIE AWA VOTED DAM SAFETY T%
=.0 1, Ab TIE a*LFW DESIGN i91611ED2,CBtTIFY 7011E OF MY aVKBXf TTIO NORMAL ELEV. 6 625 SF SAFETY, YELFAR~,AIO DOYN6TRBAL Y i IN06t5TNO
E#VAL% SAmbATE'~ NORMA OPOIAR IOID p(WI VN.V! FROM R! IDLY GO'.~ 10 7N! Mt1Y MW fn5111011 AT I&6T INCE A YENt (000M AYOEMIICN pEAIl~RA11vE1 NORMA FT FOR TIE ppOTEGION POOL DEPTH = 5.0 T OF E PO RMINDG WEANDALTH' DAM AM DE561~ TO BE SAFE NO ADEGIMTE NORMAL TEMPORARY WATER QUALITY &E 815F TIMT THIS OEIMMATION AS THE Dow H16MtFR SHALL 110 VOT 7 Fu6ATE TIE OYNER OR
PR011LNAL THE OI1 REMW NORMA NORMAL POOL POOL SURFACE 818 AREA: : OPERATOR OF THE FOND NO DM PROM THE LEGAL DUTIES OB 16AT10IL5 NO LIABILITIES
NIIIY AWEIDW N1I6OTDRd Ml PCrrCIlED 6(11! 6p Q11?lMAL UFYf IKVN6 JRI501OTI0NI FOR NAD 0.4ED 8i5 AYAGARON 0lVil BE N7 FED OF 7FE iEA1 5 OF nEf 16PEG110N5 AND ANf MNIITDWIEE TEMPO NNrY
O STORAGE OUTLET: 1 3/8" ORIFICE 4 a = DAY Y PRA N DOWN DONN: ARGM FROM 9)c," OYIERSHP OR OFMTIM TEMP. W
r~r1~.~nImNF MAINTENANCE TEMP. I a = .0000012 *6,525* 2 1 C;ERTINY 11MT VIIAOFP PP0H THE FIRST INCA OF RARFALL FROM AREAS THAT AID T
iMN6e WA MOW" MG ML N AOO "r-E PM DE PLAN NDAR DETAL9 ALL PPvIWN6 ND MFAR551YLL N ME N KGOINOANCP MN CITY OF OM60R0 6UVMJ 5 ND MR~E A RFbD7ERID PROFE610NUL BINBR TO RBfNE A PLAN NDAOR OVALS AID TO C@lTi( CCPfLEN1CN a= am 5F OR d= 1.42" MAX TO BE C.ONTROLIID PER 9EGTION 30-1-M OF TIE 6AMeO OO WALOPI'M ORDINM'2 5
%AIM THEREFORE U5E 1 3/8" DI A ORIFICE GONTROUID BY A Mrw+EITT MWERED 5TM4AkTER a AL" 6MROL THAT H46 SM DHi16tW TO FEET OR EXCEED TIE REilIR eft IN THE 6Rf968OW6TQWTM
MNIA6E ENT MNAIN.. N CA qpC
~ NN W& w4nePM7,, FOF®A15 WpmwWAM SMALL DETAdID TO ApOAtE 81911 BPYATp1El INUJK NO vskrA'L IETNA5 OP SM9R, 5r181LIZATI IN OF PSPJWW NEAS, BROWN CO6ROL AND STA6I.IZATION OF SPOIL AiEA6. CNERS A66WATION W OONRRACT PM FMAK1WommToTYRQPMWEIS' &WCUfAWWR510W.MVWCLEAN=BFOGIRWWBITIESW"WSTORMCCAPGIfY%OI'NONTWSKMMASISMEIYRDED" rr
L D (RATIONAL M-ETHOD): . °Q •,ti,,y , r~A r ALGULATIONS e Ftiss,o 9 9
6) OrNR sty" w J51w som 1a NYIEAN RP4IP CAI+NflS TO PPLrt11f TRH GROWN A16NK5 AND BOlTOh6 IEPIXE RIPR/P AS RCxURW 10 M4EEAN 06SIM CAPACITY. PRE-DEVELOPMENT DRAINAGE AREA = 1.4 ACRE-5 _ '2` SEAL t
R u~2PrzE _ (0.4X3.8 IN/HRX1 4 RG) = 14.28 GF5 ; QloPtzE _ (0.4)(5.8 IN/HR)(1.4 AG) = 21.81 GF5 Pf. SEAL 4 , 10771 SOIATURE f
T ti p
mrwt lRfID ND NIeWNUA11C110F W aWY PILL Be NECFSBARY FOR L 6W FWIE4 y, PRE-[ F1d1A1REH PCR proopm NkMRNE, CRACKS, LEa OONNDNOIN, ELOCXAO-ENG. SPUMY RWARS SHALL BE DETAIL, MPRO'" C*I5TFWlW MV CEREIFow IN Ac4ow NCE M114 6t%yaw COURY 6uvojmm 02~ POND POND DRAINAGE AREA = I5ACRE5 • F G1NE~a1,
02PG5T = (0.65X3.8 IN/HR)(11.5 AG) = 28.40 GF5 1 10POST = (0.65X5.8 I WHR)(I L5 AG) = 43.36 GF5 DATE S ~ 1'."-Yen s -z'
FdNI4M W4W EDN161R TIE 6TRYGlwt& wamff cot NAlaum RE56 CF TIE Wµ SN A L MW A RAN ND DUAL PWAM 10 RWAR SW DMW-f- Q7P0`. 04V C,BZIFit4 BY A PROF£0h10N/1 Btl! ®I FAPERDIE~ pm DAIG BE~s--l~'`TES~ -
SWAN 001680E 1d6Y~di#1 111156111111111V IF TIE 5A1ElY OF IM DIN 6 1~115W. ALL lEINODS TO CpRir15B9AFE NV5i Le516N® TO AND 00161RIC1W mm 11F gAgtvY~ION OF 0 02(PRE)= (0.4X3.8)(1.4)= 14.28 CF5 > 02(P05T) = 12.44 (FROM ROUTING): - OKAY FLAT
,9 DATA: a10(F QIO(PRE)=(0.4X5.8)(4.4)= 21.8i GF5 < QIO(P05T) = 42.'72 (FROM ROUTING) -NOT OKAY NOTE, 5 ATE ~ mTO M orLEDTTOF _ Beim AS VES&W AIV WS RU DEW VOLIK DUE TO SPACE AND GRADE GONSTRAINT5, AN OVERAGE OF 20 .14 GF5 ABOVE 10 YEAR STORM PRE PANGY
517E AREA 15bq ACRES DUE 1
DEVELOPMENT DISCHARGES FROM THI5 51TE 5EE STORM WATER QUANTITY STATEMENT BELOW. ~ ~ OGCI
{ NI W TION DRAINA6E AREA 115 AGRE5 DEVE 501E TYPE-5s 6-ID% SLOPES
atoo = (0,&5)(1.'7 IN/HR)(115 AG) = 51.56 GF5 t~~
U THEco"Kh6TQR!IVLI5G1lDLtEApp)y~IDTfd16T106?EmNiH~~ GcG CECIL5ANDY LOAM 0100 Q NAIBBIED rE41 N51TIEPERPLNd31f NA16t1dk1111 POND GeG2 CECIL SANDY CLAY LOAM b-to% 5LOPE5 am Ghoo - Qio= 18.51 - 42:12 = 35.:19 CF-5 MTERgg~~GUA I~~r~/ 1-& V ~i• I~ J~~
,CL pp pE POIDABD STNS, a CIiEWAGLA SANDY LOAM
p.vmA1 CORM APFV *WV ACID. LTNl$N0510NG0NIROL C452 GEGIL SANDY CLAY LOAM 2-6% 5LOPE5 EMER EMERGENCY SPILLWAY: Q=G *L*H'"3/2 KAjtvgTL.~/ c-a 'COL >ILM 0=3.1013'*1"3/2 = 40.3 GF5 > 35.11 GF5 - OKAY
F GENaSK~W APIInCbAW CdNftl0IPIAN McG2 MADISON CLAY LOAM 6-10%SLOPES 3) N'RACLP164DVWMYAIDQ(? ow-off TABCWFOROAK awwcafflm .~L~Ii.Iar~ /r~F~iFt nPER TYWN PLACE
4 WA1L 0!M ABCSWRME V49" PR RA McV2 MADISON CLAY LOAM 10-15W SLOPES
y M1iIM 4 W N'd DAIRtb !~IF10A11 N5TAl1ED. 5T - irc- +h-IrHIS 82 00 TIE STO 04AIM K VIAB8W SAVY WAXED WTH 1H6 PLAN NOIGATE6 THAT TIRW MU eE v.
W NlTALL TALLN1MAlpSWlaW ST 5TRA6EARF/b N PDND. M M SANDY LOAM 15-35% SLOPES m N2 OnwsTr±EAM R.OODlllfr, 'E, OR ~'AS T OF I* PROPOSED Y Tn PWRE WILLOW OAKS PARTNERS 1 . GUT= AVeA* Tr*IWjWP M&FORD COUNTY
-0 =NL SR71B1 ?Rl~BIN~ AVERAGC 76 xvrc yr 0E1~+
tN~ B "D AD Mw zr+E SItE OCirB,Of'h~r MSA G/O H LEY A. SYKE5 s , NORiH CAROLINA W4VOMOM ~ ~ark. VaNxv~ n+~fl~. ~o. X004
9 Sm FMLU* BILE AP&45QU MW VOLLM S APPPO" By a) aft eA~E vkvE r4 ~ B MAXI DISTAMINMCE ALLO TO YIAa E B FLOODUWAAY: >2000 L.F. TM sr In ADDrt101N1 arkmt'r GAAROI 405-0 N. PARKWAY urr corgis TO Ks AS pAiri JAM
AT SIRVR X Or ML Be BAMM IN WA1Eit5h® I~ JVAR oP Ilft PM9 WWWL h GREENSBORO, N. G. 21401 1660GIAi>e3, PJ1
C ATE OF 0[uP~ COO LAT' FZvl%V UM24/04 - MC*99M ~p ka rvr Nt
PRDpo5ED 1531.A. 90% THE THE MAJQMUM M90UhtT OF B11A, PERMITTED WITHIN THE DRAINAGE PHONE: [phone]
IN HA18t5NED 1IRE OF ! AREA POR TEE FROPO-E.D POND 15 4.-10 AGRE5 DUE TO THE DESIGN 1lVI9M 5)5/04 - GttY GOMNt'S Ra?Efk A FAk f bl 2114M OF SA40 Pow.
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EMERGENCY 24" CAP. RISM I I SPILLWAY I I 1 I I I I I 1 i I i l/ y / 1 y \ I I l l l 1 1 ,;;F" I I , ~ t 1! I ~ I , ( I I I 1~,/ I I ~ CLI5513 I~ I / I i 1 i 1
4 48" TRASH RACK 16,0' 5TORA6E PROVIDED: I I I I r! I I ) 1 i I OUTLET) TION I , t 1 ! f t
PV ANTI-VORTEX PLATE-5 PERMANENT 5EON'ENT: i i I I ` i I I I , I jj i t\ y 1 f 261. x 215 I I' t t t l //S i f t y
814,8 4RFACE AREA 1 4E, YQlat I r I I I I I, I I 1 I \ I I J 1 f
1060 YR. PEAK EL. 613.16
4 000.0 Id815F 8122) - - - - 1,4015E IA FT. t 5F . ID FT. 1,401 CF Y 1 I I \V A\ + I tf ~ i I V 1 lipo
10 YR. PEAK EL. 812.14 2-12' x72" 801.0 Ib28 5F ]3'
2 YR. PEAK EL. 811.48 8105 ~i ANn-SEEP PLATES 002D 2045 5E 1,184 5F,x IA FT. :F, ~ 1.0 PT. 3103 CF I .
as 1 3!8" DIA. ORIFICE 2,4315P IA FT. 603.0 2,1305E 5F. IA FT. 5.790 GF > 5,218 CF UK f ~ /ill l~ !I(fl~) / 1 /1 j 1 t f I I \ \ I / I / ~
TOP OF 808 6FLAN6ED JOINTS WITH tit BAFRLE t ) A Ay I / / - n r
BAFFLE 801.0 NEOPRENE GASKETS PERMANENT POOL: r.
13V 9JRFAGE AREA AVERAGE ~N Guy. va.urF t~ ! / ~ \ III' ri ~ ; ~ 1
P'ERMANENTPIETNIL. 808.0 6021 5F POOL 6.5PFXi 1102 5F ' ID FT.
GATE 809.0 1,5115F F 1.0 FT. 1,102 CF 0.16 / / ) i ( I I \ \ 1 I t l , ,
5EDIMENT IB` A.P. 0 4.3496 8062 5P IA FT. 5F ID FT. 15184 GF 035 f ` /l It ll i L - \ \ \ \ l II ! GE I I /
5TORA6E 810D 65915E 0.45
~V. 803 803.0 ~n 8849 5F OS FT. 5F 05 FT. KbO8 GF > I a32 CF O.K. f J l l I I \ I 1 ~t I I 1 1
7994 SPILLWAY 6105 9112 5F 5F 05 FT. 24299 GF 056 f / /l / I y y 1 1 I ! I + t ' I w
SEDIMENT FO AY 800 800 5TTOORAGE 492 5F 05 FT. MID 9052 5F / ~ f ~ / / I t ` 1 ti I ~ 1 I
- 10,213 5F IA FT. jjf- 5F IA FT. 34,512 GF 0.19 f 2 B / ID AFGUIII~'2:
4' MIN. 812D 10,7145E
51Y4 x 5Y- x IV 11065 5F OS FT. 5F 05 FT. 40,044 CF 0.42 I l / )
C.ONGRETE FOOTJN6 GUT-OFF TRENCH EMERCeWY 8125 11,356 5F 5F 05 FT. 45,811 GF 1.05
PRINCIPLE SPILLWAY OF DAM ypN tY1AY 8128 11654 F OS FT. 813.0 11,952 5F I
DEPTH BY ENGINEER 12,510 5F IA FT. 5F IA FT. 58,441 GF 1.34 'Ai
814D 13)88 5F 5F 05 FT. 65)94 CF ISO
48' C.A.P. TRASH RACK 13,5015F O5 FT.
PW EXPANDED ALUMINUM TOP rxrxtm 48" GAP. TRASH RACK AU~ 8145 3A2b 5F 8148
6"X 6" 5PAGIN6 812.8 i
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812.8 2 GRA55 LINED 5PILLWAY In L ;NATERI H CONTROL GALULATION5:
NETTING NOT NECE55ARY AUMM MOM 18M MAU PETS, WATEI OV fJER ` A517111 787 T T THE
mALTEJRSF~ INhiit~Wf l+-71EFt 4. L 1) ITY POW 7 VtN6 * EZ, g TOTAL AftOw MA" ACRES •
~L - `TOTN EN G _9RlLJ~lAX TOTN TOTAL DRAINA6£ AREH: 11.51 ACRES SCALE 1 34 .AXtISDiGT10N FOR 1NAT2R9ihIEI) f~TK~T1OHd AMP PFR:T+E ~1f1?MITErbWGE R-AN•
LE: 4.941 ACRES 2) THE FWM A NENT IER 4 tN E~i%AW., HAW P .IL AVAK AiBL:E BUILT-UPON AREA ON 511 PRIOR TO ANY M~ OP AHOYR. 517E Aim/d2
1. CONTRACWR TO PROVIDE ENGM@R WITH SHOP DRAYYN6 OF RMORA ARRa BUILT 44 LOTS 03000 S.FJLOT = 3.03 AG. PRIOR TO AN ~#4;11T 711 i k Y THE GLL`AINOJ1'
A56E1 ELY 10Y MAMIPACTUROR BEFORE OROB046 51RUGTVIRE. 44 ROADWAYS - 1.46 AC. AND DISPOSAL OF
R0 5PILLWAY DETAILS 2. CONTRACTOR TO ALLOW ON SITE INSF°6GnoN OF RISERBARREL A.SSEMI.E WA WALK5 - 021 AG. 9) THE CONTRACTOR SHALL. %A9X&jX A TION MEET1I116 PITH THE GTY OF
6R13"00RO WAS 04609M PO THE if 'f WATER GUAP Ty POND SITE :v R ~
N.T.S. PRIOR TO WSTALLAnON BUILT BUILT-UPON AREA, 41% OF DRAINAGE AREA TO POND HAS BEEN CL EAtEo AND THE P *o FIELD STAKED. J
OFFS OFFSITE DRAINAGE B11.A_ - 0.0 AC. - O% OF DRAINAGE AREA TO POND 4) THE 5OV`ERJM4ENT OFFK~E KAYV46 .RdRWj6T10M FOR WATERSHEI2 PROIWT10N AND ~ All
iwymNE POND MAINTENAN~ PERMANENT SEDIMENT STORAGE READ: I/8• • IIS AG. = 5 18 OF. THEIR A55ION5 HAVE.Lj6MT OP TO TIE PERMANENT WATER QUALITY POND
PERMANENT S®IMENT STORAGE PRVD= 5130 OF. IN BOTTOM OF -POND FOR INAPPROVA AND MIAINtENANCE EI OCONTRO . i
L"T%j V& *A W4 MM AEFM0NAFSSLiRM85tW*11EN0/MSBM Ml1AR-aTOB50ORA $00561RY,MIM06MATM T COMAOT'l%MO . ~ 3806 G.F. IN BAFFLES 10% OF BASIN 5) FINAL APPROVAL OF iN15TALt.ED RUNOFF CONTROL 51TTM1GTiJl~ WILL M REC,111tRP32 AT FINALIZATION OF THE 6RAVAS POWIT OR AT ISSUANCE OF THE FINAL BUILDING
P'E32N PERMANENT POOL DEPT111= 5DR0 FT:AINAGE AREA RATIOe 1215 CERTIFICATE OF OGCUPANGY (COMPLIANCE), HHIOHEVER COMES LATER
A*VAALL WAN ADD1111rWHPADNpSAWOND 16 NJ"WrWTOWWAW4A&VAWAT°WLLMYNpWHMOEMA50MMED. WFWT"fty,0RNTIRKAJM5T0!%. M%yG"9Y&MW5AWWATMFaWMffADfJ POOL POOL SURFACE AREA ` POND SURFACE AREA To DR ED= 6E SF b) CONTRACTOR SHALL P lT SHOP 15RAj0*NG5 OF THE POND KIT TO DESIGN
W 916M POW ED: 6,625 SF EN67I EER PRIOR TC BE&WNf~ CON5TRtXT1ON OF POND. POW =ND 005 + SURFACE CE O-OOR AREA X N PROVID 1) THE OWNER OF THE FOIo *IALL ~ DWaLE FOR PROVIDING A PVW
NIfAABY 9010IFJ~OIBODOII6A5SOON MIOEDIIEOTg1A5H0SWE R'JOM A95EGA1gIAINI1®IUThl9. POW RV TO. DRAIN THE POND-i" elsi Rl5f>UIRV "REMdNINS THE 5EDIMENT FROM THE PONE,
Rv = 0.05 r OA09 X (44) = 0.42 IN/lN .Me
JGPWTMvA/NIJOUKhDNsmwV"SWETHAN2WASOFRAINFALL N24MMPWOltAFMDMMFIRICD5OFRAINADZETWN2TO9DAYS. LOOK POPE D~ TONPTAWE65,WUL1075,DEN45MtDR'ATWLLMYNO1RA911SAW, NOEPODEDORSU.P SEANOOn Rv c iMIER6AESO0010NPBWM L'AYMJ VOW VOI..UME = (LIE-516N RAINFALL..) X (12v) X (DRAINAGE AREA) EMB26ENlGY SITUATION AND AWITiONAL MAINTENANCE AS REED.
E)1AQbAlDt1NM1 VOW VOL W = 1" RAINFALL X 0.42 INAN X 1/12 FEETANGHES X 115 ACRES = 19,563 OF
TIM AIVWAW IDMDIDTWFOMTEDON&W 4M OR0SILYNY! FSd% RM7MG nUPWAWWWU9lW04K (001LR5MWaM1MIP6WMWATM110 TEW TEMPORARY WATER GUALITY 5TORA6E REGIUIRED= 11,563 OF
TE W e TEMPORARY WATER QUALITY STORAGE PROVIDED= 19,608 OF TIE STORlNATER FM AND DAM 91CM ON 1MS MtM SATMS ft 1E dOMHEI TS OF TIE
DICES PA KAMOWK ALGAE N.MB ODORS,Pac4LOMACK AMW PE6TaM SOLD W AVVP!WW NM TIE 60AWWAL OPME MM* JAtwr, MI POPE FMTE29® WMWTKN ON AN A6 NWW EAM 50WIOPE TO Tll'_°E WM OF PROM"% MD BE NOMlAQYAL APO DE04M SAM AV R66Q.A;TTbll9 m Alow ED m TIE Wni aura lsk ADIl119TRJ ye GODS Tw 5A.
FAEDP1p16MAatwnYI ammmTufARdl f Pg„j j„') N" CAPaM DAM S&FM L/'1 OF M 0%11* AS* ftm TW4101 1% No TIE 025 DATA
t#VALS6 NO *AIM BOTTi BOTTOM ELEV. = 803.0 SILI'1t'A1~PIBt 2K - DAM ShfiEW. M M TIE CAGE MOM TIE DAM SNOMI ON TINS RM IS _ NORMAL POOL ELEV. =808.0 wea- 1ED BY TIE 5TATE 190 tE a err mm Re MM N mw PM SN OY FSMWV4WM
LAMEFGIDDAMVKVEFFPH MMLYaDWToTWMILLYOPEIR091101ATI&&TMCEAYEW (MML5A66XA&TIVAWOMNI'ATWfJ NORM NORM NORMAL POOL DEPTH = 5.0 FT 1, p6 TIE GIUJ.Fw OC31611 D~ ~Y TO rACWT or MY gDKIM TMT 1IE POD ND DAN AFE DMIGIED TO BE SAFE NO AVA210IE FOR 1HE PROTECTION
M NMML NSPEDTIM6 ANNW.INNIEYPICE /MPFLTIOIN ML EE FdPOR41D 6Y 1M 60A9IIEMAL ORKt HAVW6 JPEDIDIICN FOR INTOtlIN PPEDTFGTILIt THE CPiER''i A560C:ATIO11 5WLL M PE7TF:lD OF TIE RP]L.75 OF Rl9E N3PFL710115 NO AM' MNHEINICE f+faFED. NORM' NORMAL POOL 5URFAGE AREA: 6b25 5F OF RB x FEN•Til, yJ:ETY, YEtl MW.,ND va*R RMf1 1Y. 1 *mt5TN0
TEMPORARY WATER QUALITY ELEV: NOS 1MT IM GeRT11'"I ON AS W VOW BIGMElR SW L wr InIL'4E I* a/m OR
NON-~?OUTINE M6INTENANO TEMP TEMP. WQ STORAGE OUTLET: 13/8" ORIFICE 4 DAY DRAW DOWN: OPERATOR OF THE FIOID ND PAH FWM TIE L86AL 011156 00.`luATIr K NO LIAEwrtIE5
TIME NAMNAl E MG ML PEMR A OW518W FROP6NMNL 0"M TO PIERW A FLN AIVIX WTALS AM TO CHMW GO "M" M ACGOWD KTH 1W RAAI AV/OR DETALS. ALL WV&M15 ND REPAIRS SHNL It Me N ACO MDAMM YIHI CITY OF tPEECOQD 69MM AID a = .0000012*A*-Fh AIMftMOMS AaAMIPOROFERAT101t
9PEDFEAVOW a= .0000012*6,525* 2 1 OBRTIFT THAT aMW FROM TIE FRST WH OF RAWALL FROM AiEAS THAT ARE REWM
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@WWT9%IPINTS FOR I/ OMW ALI" Nf, CRACKS, LEMC 011FAM M M40CW ED. SPUMY FWAINS SMNL BE DCUL9V Ai4R04ED, 6MTRICTS) ND CMIFW N ACoMA CE PITN eull f DCm" 61.08.1[4, 07PF 02FRE = (0.4)(3.8 IN/HRXq.4 AC) a 14.28 GF5 ; 010PIZE _ (0.4)(5.8 IN/HRX41.4 AG) = 21.81 GFS PE SE/1 / 0771 SWIAW
d DAN W11i9 PONI PEON DRAI b5X3.8 AREA = INMR)(I1.5 AG) 28.40 GF5 ~T IoPOST = (0.65X5.8 IN/HR)(1 I.5 AG) = 43.36 GFS y' n);GIt1E`: Q 4i
FAAANM,MIQI WAPM RE 9"WARAL NI0N4I Y LR M11ECTWMM OF TTEOAK SIWL MW A " W DOTAL PAEPAW W WAR SAD DM VAW- 02PG
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SANE 4wnwL 00115" AML M REM1® IF THE SNTff OF iM DAIF 6ItWIBE9. ALL PETIM TO OCMIYIL SEEPAGE MST EE OE516PW TO AND C4IK1111007 MW TOE 9FERVI" OF AID GOMM EY A PWO96 OMAl aWM A9 "M VAW 02(PRE)= (0A)(3.8XgA)= 14.28 GF5 > Q2(PO5T) = 12.44 (FROM ROUTING): - OKAY
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DEVELOPMENT DI5GHAR6E5 FROM TH15 51TE SEE STORM WATER QUANTITY STATEMENT BELOW. CERTIFICATE GATE F A6 NO W6 f5i6N V0JW PRIOR TO M5UANGf OF ANY OF OGGlPANGT'.
GOI~TTt~1CTION JO E: 5DR41NMAFU:A E AREA 1 115 AO;M5 _GLEWe YPES
U THE CONI OCM 5HRL SCA MU A PTFECp RIWTOHEM MIN THE Gm 501 501E TCYPE5 SANDY LOAM 640% SLOPES aco = (0,&5)(9•-7 IN/HRXI1.5 AG) = 595556 GFS
SI ~p aFy Im F NO "IE FBI*~ FBI*~ FNt6t dlAI1TY PM GeCcC G2 CECIL SANDY CLAY LOAM 6-10% 5LOPEr ~ 511E PMB 1 ~i'IPCIPIm 6ED AW ND TPE PgC H8D gr 5TkE7, 6kv - CHO= '78.51 - 4212 35.19 GF5 M TM p~
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3) ISTALFM901114 MY NOPEBMY(OJr- FTAfl1C10FORDAK MGG2 MADISON CLAY LOAM 6-1099 SLOPES RAW 4) ~0M D 6A4FEND vNE WM ~ vn" ~ " M6TNlID. W,02 MADISON CLAY LOAM 10-15W SLOPES 0=3.1013'01"3/2 = 40.3 CF-5 > 351,0 GF5 OKAY KATLR9 COMOL P LM
0) AsTp 'OPBF'Psvp 441; MME MADISON SANDY LOAM 15-35 SLOPE{
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