20040826 Ver 1_COMPLETE FILE_20070828

SENDING CONFIRMATION
DATE DEC-15-2004 WED 08:50
NAME DW(2-WETLANDS
TEL [phone]
PHONE : [phone]
PAGES : 5/5
START TIME : DEC-15 08:48
ELAPSED TIME : 01r 19"
MODE : ECM
RESULTS : OK
FIRST PAGE OF RECENT DOCUMENT TRANSMITTED...
,!yt" \ 1 A rE7 Ma'wI P 2tik!. ;.,r.,rx,<
tin-r..n yr wa?J i w:.r
Doccni:- 7, 200e
DR-Q Projects 014"826
Wake C. rcnty
N1DC honics Page I of 1
2501 Blue RiJge Ram!, Stu',c 150
Raleigh, NC 27607
suhjaa 11rQlxr1y: Carranrore Subdivision, Davis DrIm Cary, NC
U1 to i'rTkev Crcek 103 04-02. 27-33-2. C NSW)
Approval of 401 N'at«r Quulity Ccriifxation nod Authoricaliun Certifkare per the Nciaw
River Buffer 1'retCCt1o1% Rules 05A NCAC 2B .0233) with Additional Conditloni
To Whom It May Come=
You have otlr appiuval, in accordance with the. attached conditions and rhow listed below, a-/
place fill w.°Jl:a or otherwke. Impact 0.01 acres of W01!,l1165, 32 feet of strenms and 7,255 square
Feet (f r') or prolccicd riparian butlers for the puiTe.c of oiu ex-ting C?e pmpo-1 n,iidcnun!
suladivlsion nt Ilic subject property, m Jcscribed within your applicaticm ,hard Octobcr 2:, 2(lf}i
and reccivcAi by lire N.C. Division of Water Quality (DWQ) on Ucwbcr 2S, 2004. After
reviewing your applc'u(in, wt bate decided thin the imp.wts arc covered by Gen:.nal Wai,a
Quality CcruScauon Nurnix`.r(s) 3402 (GC74r)2). The Catifl uivu(s) shows you to use
Nztionwice Peanut(s) 39 when i ssucd by the US 'crmy Corps of F.o?,ine rs (USACC•). This ktier
chat: a:so act is your approved A`nhonzatwn Certificate fer impacLc to the p"necad rp:uan
',uffrrs pcr 15A NCAC 2B .0233. In addition, you should obtain or otherwise co:rply with any
ctxr r.. ,'.:ilcJ fukral, sLUe ur loL:.l pernuts bc:ulc ]vu go :Jlcad wihti your prq;ra IncloJic;, (Cu[
not limited to) Eiusiun and Srdirien[ Control, and Non cLscharge iegulauons. Al-, thin
approval to procced with yonr prvpusW impacts or to conduct impacto to walcrs as
depicted hr your application shall -pi- otxxr «vpinal.imI of the. 414 Pxrrnit.
Mrs approval is for the purpme and tksigu thA you Jk sCiibcJ in your epphcaucn. U you change
your pre,cct, you must notify us and you may be iequiicd to send us a new apj)lwalicn. If thL
pmpcrty k sold. the nrw owner inust Se riven a copy of this Ca;tigcatiou and apprutal lettel' and
i:+ thereby rc;ponslhle fur,:umrlyia.G with all condtons. if total fills for th;s project (now or in
the tcrlre) exceed one acre of wetland o; 1.50 Ducar li'ct of stre:ua, coinpensatory miugutinn may
be n;cuircd as Lim-abed in ISA NCAC 211.0906 (h). 716s apprvaal requires you to follow the
wadiucris listed in the attached eerriticntion and rat addiuouai cundiuuus listed below.
The Additional Cund!tlons of the Certification arc:
1. Impacts Arpmvee, • The follouiu; impacts we henfuy approved as long as all of the ether
specifio any general cnndrtioca of "his ['e., r:icat:Qit (ur 1su:akJ R'cllanJ PmmiQ ate met. No
other impacts um approved Including 111e,J-'ntu isrti)acta;
ar' O,w: }Y'CA"= am.r lk f ? t•!i/N(J/l?
(?.: 1Y.. Sawa awn. LYVti `W', la?dr.: TJ?'G'J
+ e I L^>rw ?>'.6,n-l. al J::G. 9,C 7? `•7rT W RJro 2'P:A
%'q^a. it YT$IlN / ,1x'11 a l5f le'e. Mwr i,rly:ty 1; ^' •'•a` ,r,.,:i.: ?.nH.arr,.
P-1-II'rex Nute 7671 '+J ;T <,??
O?O? W AT ?R4G
VW r
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
December 7, 2004
MDC Homes
2501 Blue Ridge Road, Suite 150
Raleigh, NC 27607
Alan W. Klimek, P.E. Director
Division of Water Quality
DWQ Project # 04-0826
Wake County
Page 1 of 4
Subject Property: Carramore Subdivision, Davis Drive, Cary, NC
UT to Turkey Creek [03-04-02,27-33-2, C NSW]
Approval of 401 Water Quality Certification and Authorization Certificate per the Neuse
River Buffer Protection Rules (15A NCAC 2B .0233) with Additional Conditions
To Whom It May Concern:
You have our approval, in accordance with the attached conditions and those listed below, to
place fill within or otherwise impact 0.01 acres of wetlands, 32 feet of streams and 7,255 square
feet (ft) of protected riparian buffers for the purpose of constructing the proposed residential
subdivision at the subject property, as described within your application dated October 28, 2004
and received by the N.C. Division of Water Quality (DWQ) on October 28, 2004. After
reviewing your application, we have decided that the impacts are covered by General Water
Quality Certification Number(s) 3402 (GC3402). The Certification (s) allows you to use
Nationwide Permit(s) 39 when issued by the US Army Corps of Engineers (USACE). This letter
shall also act as your approved Authorization Certificate for impacts to the protected riparian
buffers per 15A NCAC 2B .0233. In addition, you should obtain or otherwise comply with any
other required federal, state or local permits before you go ahead with your project including (but
not limited to) Erosion and Sediment Control, and Non-discharge regulations. Also, this
approval to proceed with your proposed impacts or to conduct impacts to waters as
depicted in your application shall expire upon expiration of the 404 Permit.
This approval is for the purpose and design that you described in your application. If you change
your project, you must notify us and you may be required to send us a new application. If the
property is sold, the new owner must be given a copy of this Certification and approval letter and
is thereby responsible for complying with all conditions. If total fills for this project (now or in
the future) exceed one acre of wetland or 150 linear feet of stream, compensatory mitigation may
be required as described in 15A NCAC 2H.0506 (h). This approval requires you to follow the
conditions listed in the attached certification and any additional conditions listed below.
The Additional Conditions of the Certification are:
1. Impacts Approved - The following impacts are hereby approved as long as all of the other
specific and general conditions of this Certification (or Isolated Wetland Permit) are met. No
other impacts are approved including incidental impacts:
One
401 Oversight/Express Review 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
NorthCarolina
A7atuna!!y
MDC Homes
Page 2 of 4
December 7, 2004
Amount Approved
(Units) Plan Location or Reference
Stream 32 (feet)
404 Wetlands 0.01 (acres)
Buffers 7,255 (s uare ft.)
2. Buffer Mitigation (EEP) - You are required to mitigate for impacts to the protected riparian
buffers. The required area of mitigation to compensate for impacts to the protected riparian
buffers is 1,221 square feet as required under this Authorization Certificate and 15A NCAC
2B .0242(buffer mitigation rule). We understand that you wish to make a payment into the
Riparian Buffer Restoration Fund administered by the NC Ecosystem Enhancement Program
(EEP) to meet this mitigation requirement. This has been determined by the DWQ to be a
suitable method to meet the mitigation requirement. In accordance with 15A NCAC 2B
.0242(7)(buffer mitigation rule), this contribution will satisfy our compensatory mitigation
requirements under 15A NCAC 2B .0233(10)(buffer protection rule). Until the EEP receives
and clears your check (made payable to: DENR - Ecosystem Enhancement Program Office),
no impacts specified in this Authorization Certificate shall occur. The EEP should be contacted
at [phone] if you have any questions concerning payment into the Riparian Buffer
Restoration Fund. You have one month from the date of this approval to make this payment.
For accounting purposes, this Authorization Certificate authorizes payment into the
Riparian Buffer Restoration Fund to compensate for 1,221 ft2 of required riparian buffer
mitigation for impacts to 407 ft2 of protected riparian buffers; 03-04-02 river and
subbasin, 27-33-2 stream index number.
3. Diffuse Flow (DWQ Reviewed Plans) - All stormwater shall be directed as diffuse flow at
non-erosive velocities through the protected stream buffers and will not re-concentrate before
discharging into the stream as identified within 15A NCAC 2B .0233(5). In an effort to
comply with the diffuse flow provision of the Buffer Rule (15A NCAC 02B .0233(5)), you
have provided the DWQ with a stormwater management plan (including signed Operation
and Maintenance Agreements) attached to your application received by the DWQ on October
28, 2004. The DWQ believes that if implemented, as per these plans, diffuse flow will be
achieved. However, if diffuse flow as per 15A NCAC 02B .0233(5) is not achieved, then the
DWQ shall be notified and corrective actions to restore diffuse flow shall be taken if
necessary to impede the formation of erosion gullies. At no time shall stormwater from the
proposed development be piped directly through the buffer without prior DWQ written
authorization.
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. Stormwater
easements shall be recorded for a distance of at least 10 feet on each side of all stormwater
conveyances, level spreaders and stormwater ponds on all lots containing these structures
including future access for maintenance. The stormwater 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.
The O&M agreements provided within the application must transfer with the sale of the land
MDC Homes
Page 3 of 4
December 7, 2004
or transfer of responsibility for the stormwater facilities and the DWQ must be notified of
every transfer.
4. Erosion & Sediment Control Practices - Erosion and sediment control practices must be in
full compliance with all specifications governing the proper design, installation and operation
and maintenance of such Best Management Practices in order to protect surface waters
standards:
a. The erosion and sediment control measures for the project must be designed,
installed, operated, and maintained in accordance with the most recent version of the
North Carolina Sediment and Erosion Control Planning and Design Manual.
b. The design, installation, operation, and maintenance of the sediment and erosion
control measures must be such that they equal, or exceed, the requirements specified
in the most recent version of the North Carolina Sediment and Erosion Control
Manual. The devices shall be maintained on all construction sites, borrow sites, and
waste pile (spoil) projects, including contractor-owned or leased borrow pits
associated with the project.
5. No Waste, Spoil, Solids, or Fill of Any Kind - No waste, spoil, solids, or fill of any kind
shall occur in wetlands, waters, or riparian areas beyond the footprint of the impacts
depicted in the Pre-Construction Notification. All construction activities, including the
design, installation, operation, and maintenance of sediment and erosion control Best
Management Practices, shall be performed so that no violations of state water quality
standards, statutes, or rules occur.
6. No Sediment & Erosion Control Measures w/n Wetlands or Waters - Sediment and
erosion control measures shall not be placed in wetlands or waters to the maximum extent
practicable. If placement of sediment and erosion control devices in wetlands and waters
is unavoidable, they shall be removed and the natural grade restored within six months of
the date that the Division of Land Resources has released the project.
7. Certificate of Completion - Upon completion of all work approved within the 401 Water
Quality Certification or applicable Buffer Rules, and any subsequent modifications, the
applicant is required to return the attached certificate of completion to the 401/Wetlands
Unit, North Carolina Division of Water Quality, 1650 Mail Service Center, Raleigh, NC,
27699-1650.
Violations of any condition herein set forth may result in revocation of this Certification and may
result in criminal and/or civil penalties. The authorization to proceed with your proposed
impacts or to conduct impacts to waters as depicted in your application and as authorized by this
Certification, shall expire upon expiration of the 404 or CAMA Permit.
If you do not accept any of the conditions of this Certification (associated with the approved
wetland or stream impacts), 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
MDC Homes
Page 4 of 4
December 7, 2004
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.
Any disputes over determinations regarding this Authorization Certificate (associated with the
approved buffer impacts) shall be referred in writing to the Director for a decision. The
Director's decision is subject to review as provided in Articles 3 and 4 of G.S. 150B.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean
Water Act and the Neuse riparian buffer protection rule as described within 15A NCAC 2B
.0233. If you have any questions, please telephone John Dorney at 919-733-9646 or Bob
Zarzecki at 919-733-9726.
Sincerely,
CAlan W. Klimek, P.E.
AWK/bz
Enclosures: GC 3402
Certificate of Completion
cc: Sean Clark, S&EC, Inc., 11010 Raven Ridge Road, Raleigh, NC 27614
Jim Canfield, Withers & Ravenel, 111 MacKenan Drive, Cary, NC 27511
USACE Raleigh Regulatory Field Office
DWQ Raleigh Regional Office
File Copy
Central Files
Filename: 04-0826
?OF W ATF9Q Michael F. Easley, Governor
William G. Ross Jr., Secretary
?O G North Carolina Department of Environment and Natural Resources
1 r Alan W. Klimek, P. E. Director
DW_i Division of Water Quality
Coleen H. Sullins, Deputy Director
Division of Water Quality
NORTH CAROLINA DIVISION OF WATER QUALITY
401 WATER QUALITY CERTIFICATION & AUTHORIZATION CERTIFICATE
SUMMARY OF PERMITTED IMPACTS AND MITIGATION REQUIREMENTS
In accordance with 15A NCAC 2H .0500 and 26 .0233, MDC Homes has permission as outlined below and within the
General Water Quality Certification (WQC) Number 3402 w/ additional conditions for the purpose(s) of constructing a
sewer line within the protected riparian buffers. All activities associated with these authorized impacts must be conducted
with the conditions listed in the attached certification transmittal letter. THIS CERTIFICATION AND AUTHORIZATION
CERTIFICATE ARE NOT VALID WITHOUT THE ATTACHMENTS.
COMPENSATORY MITIGATION REQUIREMENT ECOSYSTEM ENHANCEMENT PROGRAM (EEP)
DWQ Project No.: 04-0826
Date: December 7, 2004
LOCATION: Raleigh
COUNTY: Wake
BASIN/SUBBASIN: 03-04-02 (river/subbasin); 27-33-2 (stream index no.)
As required by 15A NCAC 2H .0506 and 2B .0233 and the conditions of WQC No. 3402 w/ additional conditions, you are
required to compensate for the above impacts through the restoration, creation, enhancement or preservation of wetlands,
surface waters and/or buffers as outlined below prior to conducting any activities that impact or degrade the waters of the
state.
[Note: Acreage requirements proposed to be mitigated through the EEP must be rounded up to one-quarter acre
increments according to 15A NCAC 2R .0503(b).]
0 acres of Class WL wetlands
0 acres of riparian wetland
0 acres of non-riparian wetland
0 feet of stream channel
1,221 square feet of stream buffers
One of the options you have available to satisfy the compensatory mitigation requirements is through the payment of a fee
to the Wetlands Restoration Fund per 15A NCAC 2R .0503 and to the Riparian Buffer Restoration Fund per 15A NCAC
2B .0233. If you choose this option, please sign this form and mail it to the EEP at the address listed below. An invoice
for the appropriate amount of payment will be sent to you upon receipt of this form. PLEASE NOTE, THE ABOVE
IMPACTS ARE NOT AUTHORIZED UNTIL YOU HAVE RECEIVED NOTIFICATION THAT YOUR PAYMENT HAS BEEN
PROCESSED BY THE EEP.
Signature
ECOSYSTEM ENHANCEMENT PROGRAM (EEP)
NC DIVISION OF WATER QUALITY
1619 Mail Service Center
Raleigh, NC 27699-1619
[phone]
Date
North Carolina Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
? 3a
Soil Environmental Consultants PA
y 11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
f. ,
,,
`? October 28, 2004
?=-? S&EC Project #: 7960.W1
DWQ Project # 04-0826
NCDENR-DWQ R [2 c? c2 0d B
Attn: Mr. Bob Zarzecki / Mr. Danny Smith
2321 Crabtree Blvd 0 C T 2 8 2004
Parkview Building
Raleigh' NC 27604 DENR - WATER QUALITY
WETLANDS AND STORMYr'ATER BRANCH
Re: Reply to the DWQ's September 21, 2004 letter requesting further information for the
proposed Carramore Residential Subdivision, Cary, North Carolina
Dear Mr. Zarzecki and Mr. Smith:
This letter is in response to your letter dated September 21, 2004 (copy attached), which
requested additional information for the proposed Carramore Subdivision. An earlier
response was submitted and then withdrawn after an office meeting between you and I.
The following addresses your requests in the numbered order in which they are asked in
your letter.
1. Figure 2 (Sewer) .
The proposed sewer line buffer impact depicted in "Figure 2" on the attached map sheet
S 1 depicts the original easement. Buffer mitigation for the Zone 1 impacts (407 ft2) are
expected at a 3:1 ratio and payment to the NC-EEP is proposed to meet this requirement.
2. Figure 2 (Level Spreader)
The existing berm below the stormwater pond outlet will be removed and a 52' level
spreader installed. Furthermore as discussed with Mr. Zarzecki during an office meeting,
a vegetated berm will be placed in Zone 2 of the riparian buffers in front of the existing
swale to prevent reconcentration of any stormwater runoff from the construction and
development activities. Operation and Maintenance agreements are attached.
3. Figure 3 (Met Retention Basin)
The revised Figure 3 (depicted on sheet S2) shows the lower of the two outlet pipes
removed. During the removal of this pipe sediment fencing etc. will be placed on the
down slope side of the cleared area to prevent any sediment from entering the stream. No
Charlotte Office: Greensboro Office:
236 LePhillip Court, Suite C 3817-E Lawndale Drive
Concord, NC 28025 Greensboro, NC 27455
Phone: [phone] Phone: [phone]
Fax: [phone] Fax: [phone]
October 28, 2004
S&EC Project #: 7960.W1
. Page 2 of 2
more area than is absolutely necessary will be disturbed during the removal. After the
pipe has been removed the area will be revegetated with 3 maples and 3 tulip poplars and
will be seeded to further stabilize the area. Because the impacted area will be restored
the attached PCN form has removed the previously requested impacts for this area (D 1
and D2 on originally submitted map).
4. Figure 4 (Road Crossing & Diffuse Flow)
As per your request the road crossing area depicted in Figure 4 has been redesigned. As
per your request, the.road was raised in this area to allow for the storm drainage system to
be revised and outleted into a level spreader at the rear of lots 100 and 101 to promote
diffuse flow through the riparian buffer. Headwalls were also used in lieu of the
previously proposed flared end sections. Due to this change the stream channel impact
will increase from the previously requested 16 linear feet of intermittent channel to 32
linear feet. Likewise the buffer impacts will change slightly. Proposed impacts to Zone
1 will decrease to 1938 ft2 (2138 ft2 originally requested) and Zone 2 impacts will
increase to 2899 ft2 (2869 ft2 originally requested).
5. Pond 4
No additional information was requested in this section so no additional information has
been provided.
6. Wetland Fill
There will be no wetland fill on the property outside of the proposed impacts. These
impacts will comply with Nationwide Permit 39 and GC #3402.
7. Erosion & Sediment Control.
The project will comply with all erosion and sediment control requirements as per the
Town of Cary and the state. Any permits required will be obtained and addressed by the
project engineer, Mr. Jim Canfield of Withers & Ravenel.
Please call or email me at SClarkRSandEC.com if you have any further questions.
Sincerely,
Sean Clark
Environmental Scientist
Attachments: DWQ letter dated September 21, 2004
Revised PCN form
Operation and Maintenance Agreements
Revised Impact Maps (4 sheets)
Office Use Only: Form Vcrsion May 2002
USACE Action ID No. DWQ No.
(If any particular item is not applicable to tlus project, please enter " ivot Appilcaoie or N/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: NWP 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: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ?
II. Applicant Information
Owner/Applicant Information
Name: MDC Homes
Mailing Address: 2501 Blue Ridge Road
Suite 150
Raleigh NC 27607
Telephone Number: [phone] 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: Sean Clark
Company Affiliation: Soil & Environmental Consultants, PA
Mailing Address: 11010 Raven Ridge Road
Raleip,h NC 27614
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: SC1arkPa SandEC com
Page I of 9
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Carramore Subdivision
2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A
3. Property Identification Number (Tax PIN): 074401365147, 074401357569, 074401369258,
074401466348,074401252951,074401268401
4. Location
County: Wake County Nearest Town: Cary
Subdivision name (include phase/lot number): Carramore Subdivision
Directions to site (include road numbers, landmarks, etc.): The site is located immediately
west of Davis Drive (SR 1613) and approximately 2,200 feet north from the intersection of
Davis Drive and High House Road (SR 1615) in Cary, NC.
5. Site coordinates, if available (UTM or Lat/Long): 0351 47' 58.37" N 078° 51' 7.68" 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): +/- 65 Acres
7. Nearest body of water (stream/river/sound/ocean/lake): UT to Turkey Creek
8. River Basin: Neuse River
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: The site is currently predominately in fallow pasture. The
Page 2 of 9
lower areas along natural drainages are wooded. The site contains several drained ponds and
two existing ponds. Surrounding properties are primarily residential or being used for
agriculture.
10. Describe the overall project in detail, including the type of equipment to be used: The
project consists of the construction of a residential subdivision. This subdivision will require
the installation of utilities such as sewer, roadways, electrical, etc. typically associated with a
residential subdivision. Heavy equipment associated with land clearing and construction will
be utilized.
11. Explain the purpose of the proposed work: This subdivision is being built to provide
housing to offset the needs of the growing population in this area. The proposed impacts are
required to provide access to all portions of the property.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
S&EC conducted a detailed wetland delineation and Neuse Riparian Buffer evaluation in June
2003 for the +/- 105-acre property then owned by the Edwards Family. A 65 acre portion of the
property has since been sold to MDC Homes (the applicant). Six old irrigation/farm ponds exist
on the 105-acre property originally evaluated by S&EC. Three of these ponds had been drained
prior to S&EC's field evaluation and prior to DWQ's site meeting. S&EC conducted a site
meeting with Ms. Deborah Edwards of the NCDWO on August 25, 2003 to review the
potentially subject features on property. Written confirmation form NCDWQ was received on
November 19, 2003, and a copy is attached.
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 permits are known to be required at this time.
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
Page 3 of 9
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: Permanent impacts consist of
32 linear feet of intermittent channel and .0099 acres of wetlands due to road construction
(Impacts Al A2 E3 and E4).
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***
Al (NWP 39) Permanent/Fill .0069 No +85 Bottomland Forest
A2 (NWP 39) Permanent/Fill .0004 No +95 Bottomland Forest
E3 (NWP 39) Permanent/Fill .0026 No 0 Headwater Linear

* 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 arc 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 htip://www.fema.gov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.) 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: +/- 0.5 acre
Total area of wetland impact proposed: .0099 Acres
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?
leases pecify)
E4 (NWP 39) Culvert/fill 32 UT to Turkey Creek +2' Intermittent

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www.usRs.eov. Several internet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com,
Nvww.mapqucst.com, etc.).
Page 4 of 9
Cumulative impacts (linear distance in feet) to all streams on site: 32 Linear Feet
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.) below:
Open Water Impact
Site Number
Type of Impact* Area of
Impact Name Waterbody Type of Waterbody
(lake, pond, estuary, sound,
indicate on ma acres (if applicable) bay, ocean, etc.
N/A
* List each impact separately and identify temporary impacts. impacts include, but are not nmttea to: nu, excavation, urcu61119,
flooding, drainage, bulkheads, etc.
5. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ? uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): N/A
Proposed use or purpose of pond (e.g., livestock watering, irrigation; aesthetic, trout pond,
local stormwater requirement, etc.): N/A
Size of watershed draining to pond: N/A Expected pond surface area: N/A
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
The client requested a detailed delineation prior to site plan development in an effort to avoid
impacts where possible The site plan was developed to create the least amount of impacts
possible Roads were aligned and angled in such way as to avoid the stream channels to the
maximum extent practicable The proposed impacts were required in order to access all portions
of the site.
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.
Page 5 of 9
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.ne.us/ncwetlands/strmgide.html.
Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
Typically impacts to unimportant/intennittent streams do not require mitigation. Because
proposed impacts have been minimized to the maximum extent practicable and only consist
of 32 linear feet of intermittent channel and less than 1/10 acre of wetland, we do not believe
mitigation should be required. However if mitigation is required the applicant proposes
payment to the EEP.
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
Page 6 of 9
IX. Environmental Documentation (required by DWQ)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes ? No
if yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No ?
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy ? f the NEPA or SEPA final approval letter.
Yes ? No ?
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 213 .0259 (Tar-Pamlico), 15A NCAC 213 .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Yes ® No ? If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
B
* Impact I I Required
Zone lr_ Multiplier
1 407 3 NA
2 902 1.5 NA
Total 1309 NA
Page 7 of 9
C
Zone* Impact
(square feet Multiplier Required
Mitigation
1 588 3 NA
2 521 1.5 NA
Total 1109 NA
E
Zone* Impact Multiplier Required
(square feet Mitigation
1 1938 3 NA
2 2899 1.5 NA
Total 4837 NA
* 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.
Because the impacts resultine from the road crossine (Impact Area E) are below the threshold
required for mitigation _(<1/3 acre, <150 linear feet) we do not believe mitigation should be
required. The impacts resulting from impacts BI and B2 are required in order to tie into the
existing sanitary sewer manhole located within Zone l(see attached Figure 2). The Zone 1
impact resulting from this sewer installation (Impact B1) is not a perpendicular impact however
is less than 40 feet wide measuring from where it enters Zone 1 to where it exits. The impacts
labeled C1 and C2 are perpendicular impacts.
XI. Stormwater (required by DWQ)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
The stormwater plan is attached to the application however the impervious surface are will be
less than 30%.
XII. Sewage Disposal (required by DWQ)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
The site will tie into an existing , sanitary sewer (Town of Cary,) adjacent to the property.
Page 8 of 9
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules?
Yes ® No ?
Is this an after-the-fact permit application?
Yes ® No ?
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
N/A

Oct
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Page 9 of 9
W ATF9Q Michael F. Easley, Governor
William G. Ross Jr., Secretary
?O G North Carolina Department of Environment and Natural Resources
1l U [ Alan W. Klimek, P. E. Director
Division of Water Quality
o ?c
Coleen H. Sullins, Deputy Director
Division of Water Quality
September 21, 2004
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
MDC Homes
2501 Blue Ridge Road, Suite 150
Raleigh, NC 27607
DWQ Project # 04-0826
Wake County
Page 1 of 3
Subject Property: Phase 1, Carramore Subdivision, Davis Drive, Cary, NC
• . UT to Turkey Creek [03-04-02, 27-33-2, C NSW]
REQUEST FOR MORE INFORMATION
To Whom It May Concern:
On May 21, 2004, the Division of Water Quality (DWQ) received your application dated May 20, 2004 to
impact 0.0099 acres of wetlands, 16 feet of stream and 8,139 squa?e feet (ft) of protected riparian buffers
to construct the proposed subdivision. On July 15, 2004, the DWQ'requested additional information in
order to complete our review of your project. On July 30, 2004, the`DWQ received additional
information in response to our July 15, 2004 request. On August 24, 2004, the DWQ conducted a site
visit at the subject property to review your request. The DWQ discovered that land clearing and
development has occurred at the site as described in greater detail below. Some of these activities
occurred within the protected buffers without written approval from the DWQ. This office believes that
violations of the Neuse Buffer Rules have occurred at the subject property and is hereby notifying
the DWQ Raleigh Regional Office and DWQ Wetlands & Stormwater Branch Assistance &
Compliance Oversight Unit of these potential violations.
The DWQ has determined that your application was incomplete and/or provided inaccurate information
as discussed below. The DWQ will require additional information in order to process your application to
impact protected wetland, streams and/or buffers on the subject property. Therefore, unless we receive
the additional information requested below, we will have to move toward denial of your application as
required by 15A NCAC 2H .0506 and 2B .0233(8) and will place this project on hold as incomplete until
we receive this additional information. Please provide the following information so that we may continue
to review your project.
Additional Information Requested:
Figure 2 (Sewer) - The sketched, re-designed sewer line connection that you proposed within your
July 30, 2004 response would still require buffer mitigation because it would result in impacts other
than a perpendicular crossing of a surface water. The DWQ prefers your original design because it
would result in less man-holes within the protected buffer. However, mitigation will be required
for the Zone 1 impacts (at a 3:1 ratio).
?art??r;x
N. C. Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
MDC Homes / Carramore SD / DWQ Project No.
Page 2 of 3
September 21, 2004
2. Figure 2 (Level Spreader) - During our site visit on August 24, 2004, the DWQ discovered that
the "Dry Detention Basin (Pond #1- East)" and associated level spreader had been constructed.
The ephemeral drainage channel or gully discussed in our July 15, 2004 letter to you was located in
the field by DWQ staff. This gully prevents the ability to provide diffuse flow in this location. As
such this discharge is currently in violation of the diffuse flow provision of the Neuse Buffer
Rule, 15A NCAC 02B.0233(5). In addition, it appears that this gully had been reshaped and
erosion control fabric was installed through out its length. Due to the reshaping of the gully and
presence of the erosion control fabric, this office believes that you and/or your contractor are aware
of this gully and are thereby aware of the fact that it is not providing diffuse flow. The length of the
level spreader appears to have been designed for a discharge to grass or thick ground cover (i.e., 13
ft/cfs). DWQ staff observed a stand of hardwood trees with a relatively open understory within
Zone 1 of the protected buffer below this discharge location. As such, it appears that the level
spreader should use the design calculation of 100 as stated within our "Draft Level Spreader
Design Options" document dated October believes that the length of the spreader
http //h2o enr state nc us/ncwetlands/level.vdf). The DWQ
if calculated using the 1001Vcfs would exceed the maximum length of 300 feet. As such and
primarily due to the existence of the gully feature, this office does not believe that diffuse flow can
be achieved at this discharge location. The DWQ recommends that you evaluate modifying the
existing dry detention basin to a constructed wetland oY other acceptable stormwater management
facility that controls nitrogen. Please note that stormw?ter easements will be required around all
stormwater conveyances and devices and a signed Operation & Maintenance agreement will be
required as conditions of any final approvals from the DW(Q for development.
3. Figure 3 (Wet Retention Basin) - During our site visit on August 24,
2004, the DWQ determined - West)" had been constructe. Two discharge pipes that the "Wet Retention Basin (Pond #as?ed within the protected buffers. These discharge pipes had
been installed and there easements cleared
have not been approved by the DWQ and are therefore currently in violation of the Neuse
Buffer Rule. The revisions provided within your July 30, 2004 response appear to be acceptable.
However, before we can approve this impact you must provide the DWQ with a plan on how you
intend to remove any utility pipes placed within the VDIP easement and restore the buffer. Also,
you must provide assurances that the discharge from the level spreader to the now disturbed buffer
will provide diffuse flow and what measures will be taken if diffuse flow is not achieved. schargin 4. Figure 4 (Road Crossing & Diffuse Flow) - It appears that t you the road. It also ppea? that the
stormwater runoff from the road to the south (uphill)
culvert proposed to convey water under ter off from the road) and discharge it directly throughh
side of the road (including the stormwater run
flort
to buffer and to the stream. Please pre dd e cross
work to achieve the diffusel w requirements
elevations) and clearly explain how the design
of the Rule. The DWQ does not dispute the location of the proposed road. However, it still
appears that diffuse flow will not be achieved at this location. The DWQ did determine that this
proposed road was not installed at the time of the August 24a' site visit. property 5. Pond 4 -The pond labeled as a4 on the USS map an OveralGWe ands Impact adravvings (north of the bars)
you are
boundary of the "Carramore Subdivision that
has been determined to be exempt rr facilhe Neuse Buffer Rules. However, it
ocat o of this pond with a d scharge pipe that
proposing to construct a stormwat h'
will extend off property through the Gamble and Hall properties. The DWQ discovered that this
MDC Homes / Carramore SD / DWQ Project No. 04-0826
Page 3 of 3
September 21, 2004
stormwater pond and discharge pipe have been installed at the time of our site visit and that it
discharges to an existing stormwater system. As such, the DWQ does not require any additional
information regarding this discharge.
6. Wetland Fill- The DWQ identified that some minor wetland fill has occurred on the property
outside of protected buffer areas. Please note that this fill must comply with all of the conditions of
General Water Quality Certification No. 3402.
7. Erosion & Sediment Control - Your project must comply with all applicable Erosion & Sediment
Control regulations, obtain an Erosion & Sediment Control Plan (if required) and comply with
Construction Stormwater Permit NCGO 10000 (if required). Erosion and sediment control measures
for the project must be designed, installed, operated, and maintained in accordance with the most
recent version of the North Carolina Sediment and Erosion Control Planning and Design Manual.
Please respond within three weeks of the date of this letter by sending this information to me in writing
and Mike Horan of the DWQ Raleigh Regional Office. If we do not hear from you within three weeks,
we will assume that you no longer want to pursue this project and we will consider the project as
withdrawn.
This letter only addresses the application review and does not'ttuthorize any impacts to wetlands, waters
or protected buffers. Please be aware that any impacts requeste within your application are not
authorized (at this time) by the DWQ. Please call Mr. Bob Zarz6cki at 919-733-9726 if you have any
questions regarding or would like to set up a meeting to discuss this matter.

JRD/bz
4-)V
Wetlands / 401 nit
cc: Mike Horan, DWQ Raleigh Regional Office
Danny Smith, Assistance & Compliance Oversight Unit
Sean Clark, S&EC, Inc., 11010 Raven Ridge Road, Raleigh, NC 27614
Tom Horstman, Town of Cary, Engineering Department, PO Box 8005, Cary NC 27512
USACE Raleigh Regulatory Field Office
File Copy
Central Files
Filename: 040826
SEP 2 a
10/06/04 17:46 FAX [phone] WITHERS & RAVENEL W UU:3/UU7
CARRAMORE SUBDIVISION
WET RETENTION NAM MP 93)
ND AINTENANCE AGREMNT
6. Remove cattails and other indigenous wetiand plants when they cover 500/6 of the basin surface.
7. All components of the wet retention basin system shall be maintained in good working order.
8. If the basin must be drained for an emergency or to perform maintenance, the flushing of the sediment
through the emergency drain shall be managed to the maximum extent practical.
9. A thorough annual inspection shall be completed and the following items addressed:
> Clogging of the outlet or too rapid a release,
> Erosion on the banks,
> Erosion at the inlet and outlet,
> Sediment accumulation and the need for removal, and
> Woody vegetation in the embankment.
acknowledge and agree by my signature below that I am responsible for the performance of the nine
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 Jeff Aiken MDC Homes
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 presid-eLntt.., /
arf?
a Notary Pu lic for the State of
I,
County of do hereby certif,/yi?that
personally appeared before me this Ili day of&A/2? 1- and acknowledge the due
execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand and
official seal,
???1111111/??
PV8(?c
CO N
SEAL
My commission expires- Z-//n
Page 2 of 2
Title: Mce President
Address: 2501 Blue Ridge Road Suite 130, Raleigh. NC 27607
10/06/04 17:46 FAX [phone] WITHERS & RAVENEL IA 004/007
CARRAMORE SUBDIVISION
LEVEL SPREADER (LOTS 100 8101)
OPERATION AND MAINTENANCE AGREEMENT
The level spreader basin system is defined as the level spreader structure.
1. After every significant runoff producing rainfall event and at least monthly, inspect the level spreader
system for the following::
> Sediment accumulation,
> Erosion,
> Trash accumulation,
> Vegetated cover, and
> General condition.
2. All grass areas of the level spreader shall be mowed to maintain a maximum grass height of six inches,
and at least twice annually.
3. Repair eroded areas immediately, re-seed as necessary to maintain good vegetative cover, and remove
trash as needed.
4. Inspect and repair the collection and outlet systems (i.e. catch basins, piping, swales, riprap, etc.)
quarterly to maintain proper functioning.
5. Remove accumulated sediment from the level spreader semi-annually or when depth reaches six inches.
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 detention basin or stream, etc.)
6. Remove cattails and other indigenous wetland plants when they cover 50% of the level spreader surface
area.
7. All components of the level spreader system shall be maintained in good working order.
8. A thorough annual inspection shall be completed and the following items addressed:
> Clogging of the weir outlet or too rapid a release,
> Erosion on the banks,
> Erosion at the inlet and outlet, and
> Sediment accumulation and the need for removal.
Page 1 of 2
10/06/04 17:46 FAX [phone] WITHERS & RAVENEL WjUU0/uu1
CARRAMORE SUBDIVISION
LEVEL SPREADER (LOTS 100 & 101)
OPERATION AND MAINTENANCE AGREEMENT
I acknowledge and agree by my signature betto notify any responsible
problehms 'tlt the systemhor prior to any
maintenance procedures listed above. I agree Y DWQ o
changes to the system or responsible party.
50% of the
Note: The legally responsible party should subdiv sio has been named the president.
lots have een sold and a resident of the
a Notary P blic for the State of r
County of Ar?/?? , do hereby certify that
r ? da ?personally appeared before me this _ Y of and acknowledge the due
execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand and
official seal,
NOTARY
PUBLIC .
SEAL
My commission expires ?/
Page 2 of 2
Print name Jeff Aiken MDC Homes
Title: Vice President
Address: 2501 Blue Rid a Road Suite 150 Raleigh, NC 27607
10/06/04 17:46 FAX [phone] WITHERS & RAVENEL 0006/007
CARRAMORE SUBDIVISION
DRY DETENTION BASIN (POND #t:1 EAST)
OPERATION AND MAINTENANCE AGREEMENT
The dry detention basin system is defined as the dry detention basin and the associated outlet structure.
1. After every significant runoff producing rainfall event and at least monthly, inspect the dry detention basin
system for the following::
> Sediment accumulation,
> Erosion,
> Trash accumulation,
.> Vegetated cover, and
> General condition.
2.
3.
4.
5.
All grass areas of the dry detention basin shall be mowed to maintain a maximum grass height of six
inches, and at least twice annually.
Repair eroded areas immediately, re-seed as necessary to maintain good vegetative cover, and remove
trash as needed.
Inspect and repair the collection and outlet systems (i.e. catch basins, piping, swales, riprap, etc.)
quarterly to maintain proper functioning.
Remove accumulated sediment from the dry 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 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.
When the sediment depth reads 1.9 feet in the main pond, the sediment shall be removed.
BASIN DIAGRAM
Top of Dam Elevation 360.0
Sediment
6
7.
Bottom
oval El. 354. 75 Sediment Removal Elevation 354.5 75%
ation 352.6
FOREBAY MAIN POND
Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface.
All components of the dry detention basin system shall be maintained in good working order.
Page 1 of 2
10/06/04 17:47 FAX [phone] WITHERS & RAVENEL
CARRAMORE SUBDIVISION
DRY DETENTION BASIN (POND 91 EAST)
OPERATION AND MAINTENANCE AGREEMENT
8. A thorough annual inspection shall be completed and the following items addressed:
> Clogging of the outlet or too rapid a release,
> Erosion on the banks,
• Erosion at the inlet and outlet,
> Sediment accumulation and the need for removal, and
> Woody vegetation in the embankment.
U007/007
acknowledge and agree by my signature below that I am responsible for the performance of the eight
maintenance procedures listed above. I agree to notify DWO of any problems with the system or prior to any
changes to the system or responsible party.
Print name Jeff Aiken MDC Homes
Title: Vice President
Address: 2501 Blue Ridge Road Suite 150, Raleigh NC 27607
Ph
Signi
Date
?41J(Q-
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 Pu lic for the State of 4/;/ta-?
I,
County of do hereby certify that `h
personally appeared before me this ? day of and acknowledge the due
execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand and
official seal,
NOTARY • '??
PUBLIC _
SEAL
My commission expires la
Page 2 of 2
PROPOSED IMPACTS ifl6 FT
LEVEL
E1 ZONE 1 NR8 IMPACT 1,938 SF .SPREADER.
E2 ZONE 2 NR8 IMPACT 2,899 SF t J
! \ \ \ >???
E3 LINEAR WETLANDS 112 SF !+ + r , I
E4 CHANNEL IMPACT 32 LF + 101-11
LEVEL SPREADER CALCULATIONS 12;857 S
L- Q,oxl3 If/cfs
L- 8.9 cfs x 13 If `\?E Nb5\
J ftF
L- 116 ft
00 V'' '
H %AN All
;;
\\ \\ ; ` 1y,714 SF k
ONE', ?0? 201.14
ONE
HOUSE
J, E4
I?
BEGIN ? E ?\ V?', "10 ..;..x;;.? .?v,•v
?H AN N E
1 01 1 +' / /, 1
p ?. ?(f J i I
\ :: vr.='.!iii:: r:.?'•x':3: :• ;r.%::.a.r.:. / i
r /
.., -"1 _.,'!TC "{ (V + ; 1r
CA 0
LO I
\
0) 1)
01 vo.
\\LINEAR
?? +, `, \\ \\ WETLANDS
\ ,19,.075 Fr
4 1 ? ? Ir
\\ ?\ `\\ \, \ , , \\ \? 7 N l % ?` it n
cr)
r- \ \ \ ` I? 111 1 r
N \F
REVISION A ONO COMMENTS 10/5/04 GRAPHIC SCALE V-50'
Note: See Overall IVellands Impact Alap For Area Location N 25 0 25 50 75
WITHERS & RAV E N E L FIGURE 4: AREA OF WETLANDS
ENGINEERS I PLANNERS I SURVEYORS CARRAMORE SUBDIVISION WETLANDS IMPACT
11I MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] -withersra a el.com CARY WAKE COUNTY NORTH CAROLINA
%
MEMORANDUM
TO: John Dorney Regional Contact: Steve Mitchell
Non-Discharge Branch WO Supervisor:
Date:
SUBJECT: WETLAND STAFF REPORT AND RECOMMENDATIONS
Facility Name Carramore Subdivision c/o MDC Homes County Wake
Project Number 04 0826
Recvd From APP
Received Date 5/21/04 Recvd By Region
Project Type residential S/D
County2
Region Raleigh
Certificates Stream
Permit Wetland Wetland Wetland Stream Class Acres Feet
Type Type Impact Score Index Prim. Supp. Basin Req. Req.
39 BLH _FT O N F- 27-33-2 C NSW 30,402. 0.01 16.00
FN -BR Buffers FT-0 N F__F-F__r- 30,402. 0.19
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? 0 Y 0 N
Is Mitigation required? 0 Y 0 N Recommendation: 0 Issue 0 Issue/Cond 0 Deny
Provided by Region: Latitude (ddmmss) 354758 Longitude (ddmmss) 785108
Comments:
June 4, 2004
Will wet detention basin/pond 1 achieve nutrient reduction rewired for direct discharge? If not needs
a level spreader. Road crossing in Figure 4 can be moved to minimize buffer impacts.
HOLD or more info on impacts

IVIJ,-E (',, -P,) 'f ,-, (t- ,/J/J/,try-/- ; ? /?,0-,,o-/1, q
e _j
14 r
cc: Regional Office
Central Office Page Number 1
F
ro
t_
Syr.
yf-
Ki
W,4 -
le _
e_ f
y
7
b7i f-.
y ?
i y
f 4 /a/I , l?10G
V ? ?c?-C. ??1jLL'7n-G4' ??

i

R V!8T HERS RAE,/ENML
ENGINEERS I PLANNERS I SURVEYORS
October 1, 2004
Mr. Bob Zarzecki
NCDENR - DWQ
1650 Mail Service Center
Raleigh, NC 27699-1650
RE: Carramore Phase
DWQ No. 04-0826
W&R No. 203300.0
Dear Mr. Zarzecki:
We are writing this letter to follow up a letter requesting additional information dated September
21, 2004 from John Dorney concerning the above-referenced project. This follows up the initial
DWQ request for more information dated July 15, 2004. We offer the attached information and
following written responses in conjunction with our meeting with you, Mike Horan with the
Raleigh Regional Office and Danny Smith with the Assistance and Compliance Oversight unit on
Friday, October 1". We will provide additional information if required from our meeting to satisfy
your comments so that the permit can be issued for this project.
Our written responses and/or comments to the additional information requested in your letter are as
follows:
1) We understand that the sewer line as originally designed is preferable to DWQ as shown
on the original permit application and that mitigation will be required for the Zone 1
buffer impacts at a 3:1 ratio.
2) We have provided the attached pictures indicating the outlet condition at the level
spreader as it was installed. We believe that diffuse flow will be provided through the
grassed area downstream of the level spreader via the proposed sewer easement. A
temporary erosion control berm was constructed to ensure no offsite siltation occurred
during the stabilization period of this area. This berm needs to be removed and either
seeded or sodded to promote diffuse flow. We further concur that there is an existing
conveyance channel just downstream of the level spreader that in conjunction with the
temporary berm now promotes concentrated flow through the buffer. Please note that
this stormwater diversion channel was constructed by the original property owner in
order to eliminate stormwater discharging onto the adjacent property owners. This work
was done several years ago and was not part of any construction associated with the
Carramore development. We believe that once the temporary berm is removed and this
conveyance channel is filled and sodded, diffuse flow will be provided as required by the
State rules.
3) We concur that the existing 6" DIP pipe will be plugged at the valve as shown on the
marked up Figure 3 currently referenced in your letter. We believe that the buffer has
been restored via the revegetation as shown on the attached pictures. Please advise if
additional restoration is required and we will respond accordingly.
ill MacKenan Drive i Cary, North Carolina 27511 1 let: 919.469.3340 1 fax: [phone]oo8 i www.withersravenel.com
1
' Page 2 of 2
October 1, 2004
4) This proposed road crossing is part of Phase II of this subdivision. We have attached a
copy of Sheet 4 showing the plan and profile for this roadway crossing. Due to the
roadway grade elevations, it is impossible to discharge the stormwater collected within
the roadway into a level spreader outside of the riparian buffer. This is the reason we had
previously shown the storm drainage system discharging upstream of the riparian buffer
area. We could raise the road to provide enough relief to have a level spreader as shown
on the redlined Sheet 4. This would, however, result in more disturbance of the riparian
buffer to achieve diffuse flow for three stormwater inlets collecting approximately two
acres of drainage area. We will provide you with final plans for whichever option is
deemed acceptable by your staff.
5) We concur with your findings and understand that no additional information is needed
for this area.
6) We understand that the wetland fill you are discussing was shown on Figure 1 of our
permit package. We will comply with all conditions of General Water Quality
Certification No. 3402.
7) The erosion control plan for this project has been reviewed and approved by the Town of
Cary. We will also be complying with Construction Stormwater Permit NCG010000.
This is a condition of the grading permit received from the Town of Cary. Erosion and
sediment control devices for this project have been installed and will be operated and
maintained in accordance with the Town of Cary requirements since it is within their
jurisdiction. Please note that these two ponds were initially constructed for erosion
control purposes. The Developer allowed the Contractor to complete the final
stormwater management piping and associated level spreaders as part of the initial
construction of these basins. In retrospect, we erred in allowing this to be done prior to
receiving final approval from DWQ. We do believe that the intent of the Neuse River
Buffer Rules were met and the Developer was trying to do a good job upfront without
having to come back at a later date after the stormwater management devices cease acting
as erosion control devices and install the final spillways and level spreaders at that time.
We apologize for any problems associated with this and will remedy the situation per the
information provided with this letter.
We appreciate the opportunity to discuss this information in detail with you and will',follow up with
any revised information needed in order to satisfy your request for additional information and allow
for the permits to be issued for this project. Please advise if you require additionalinformation or
have any questions.
Sincerely,
WI HE &-RAVENEL, INC.
Ji Can ield, PE
Attachments
cc: Jeff Rolan - MDC Homes
Sean Clark - Soil & Environmental Consultants
K:\03\03-300\03300\proj\093004.dwq.d oc

:a

sw? 6'n &,n ?? P-O?

7

ik Ae,?t
Para ? 2
S4w,'? 0^
i
r,Me ,d6M
N 8f
ptm/o ? - ct ?)-
S4,? 0., toi rl? at 's v

oil 0
po,/6 # 1 fd-
1-0 wmt?? &??

0own f -j- Ve-,4--

I
N "' '
P,? fi 2- ?'?I-

e•
iln'vv

R

=, - ' eta r+.,y? {ry r - r.? }?7 -
- `? •,5 t ?¢ ? M ?,. a 7v (.r' 4+?tet? _ } t ? ? • i s' ?.?'?
u,. 4 r i?y?'S . ,? rr [Y4'a), J ax;r.{}??$.`; i `' i. s' pp •S?i t _
lit
}' ? te.- s / f???t'1 y •-. ? ? ?,r ?;.:.S . ? 1 _ 7iti` ? Y -.u a`7?R ?ti.`""r??? ,.yrAs?',ys ,s ! x + .t ?St
a•.t ? .? ? { ??? ? ? - ?`rY• ? ?4 ?¢ ' it v ?Y'?r ? ., ,?tj,??^{? y?,?c,?,?}"' `,!??j"t??11* -! ??: }^?! ?i?
... ,` s e i Rdyt ? rt ?' "i ? S • #?. m>a ??t?1?-T''(R./"'.?{y l€$lF ?`? fit' 1 °?`y?ir T Y
} at +t s t ;4 4M1 is 3f • t f '? ???? r 1 y K t ?: t
ini
WE .ts4 r ``:` v fl- w
l?" ! fir'`! 't +?.y t? ;, .? !{ s ? ? g ?`?11 • I ? -t1t ?r rf? c, '? ?F'? s_., y'
r '_., tr?; sbcY .._ .?'"i-. 'S--7•?".i,:: w .r-?'? t'iy? t? ? :?F r'1??tF, n`.: 'JLtM4' $- ???...?,. {??
04N )wn

T"'17:,
OAK
JUIV
A?y
f
Sri'

m

QMV #-3
s4e?
grog
sue:, m A,,,, 4.e, NV

r?? ?3
sin o.;? ¢,?, s„?
(' „F
R
F \ NA T? Michael F. Easley, Governor
O
9
? Q William G. Ross Jr., Secretary
G
O
y North Carolina Department of Environment and Natural Resources
C Alan W. Klimek, P. E. Director

o - Division of Water Quality
c
Coleen H. Sullins, Deputy Director
Division of Water Quality
September 21, 2004
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
MDC Homes
2501 Blue Ridge Road, Suite 150
Raleigh, NC 27607
DWQ Project # 04-0826
Wake County
Page 1 of 3
Subject Property: Phase 1, Carramore Subdivision, Davis Drive, Cary, NC
UT to Turkey Creek [03-04-02, 27-33-2, C NSW]
REQUEST FOR MORE INFORMATION
To Whom It May Concern:
On May 21, 2004, the Division of Water Quality (DWQ) received your application dated May 20, 2004 to
impact 0.0099 acres of wetlands, 16 feet of stream and 8,139 square feet (ft) of protected riparian buffers
to construct the proposed subdivision. On July 15, 2004, the DWQ`requested additional information in
order to complete our review of your project. On July 30, 2004, the DWQ received additional
information in response to our July 15, 2004 request. On August 24, 2004, the DWQ conducted a site
visit at the subject property to review your request. The DWQ discovered that land clearing and
development has occurred at the site as described in greater detail below. Some of these activities
occurred within the protected buffers without written approval from the DWQ. This office believes that
violations of the Neuse Buffer Rules have occurred at the subject property and is hereby notifying
the DWQ Raleigh Regional Office and DWQ Wetlands & Stormwater Branch Assistance &
Compliance Oversight Unit of these potential violations.
The DWQ has determined that your application was incomplete and/or provided inaccurate information
as discussed below. The DWQ will require additional information in order to process your application to
impact protected wetland, streams and/or buffers on the subject property. Therefore, unless we receive
the additional information requested below, we will have to move toward denial of your application as
required by 15A NCAC 2H .0506 and 2B .0233(8) and will place this project on hold as incomplete until
we receive this additional information. Please provide the following information so that we may continue
to review your project.
Additional Information Requested:
1. Figure 2 (Server) - The sketched, re-designed sewer line connection that you proposed within your
July 30, 2004 response would still require buffer mitigation because it would result in impacts other
than a perpendicular crossing of a surface water. The DWQ prefers your original design beca0e it
would result in less man-holes within the protected buffer. However, mitigation will be required
for the Zone 1 impacts (at a 3:1 ratio).
0
A6A
NCDENR
N. C. Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
[phone] (phone), 919-733-6893 (fax), (http://h2o.enr.state.nc.us/ncwetlands)
. V
MDC Homes / Carramore SD / DWQ Project No. 04-0826
Page 2 of 3
September 21, 2004
2. Figure 2 (Level Spreader) - During our site visit on August 24, 2004, the DWQ discovered that
the "Dry Detention Basin (Pond #1 - East)" and associated level spreader had been constructed.
The ephemeral drainage channel or gully discussed in our July 15, 2004 letter to you was located in
the field by DWQ staff. This gully prevents the ability to provide diffuse flow in this location. As
such this discharge is currently in violation of the diffuse flow provision of the Neuse Buffer
Rule, 15A NCAC 02B .0233(5). In addition, it appears that this gully had been reshaped and
erosion control fabric was installed through out its length. Due to the reshaping of the gully and
presence of the erosion control fabric, this office believes that you and/or your contractor are aware
of this gully and are thereby aware of the fact that it is not providing diffuse flow. The length of the
level spreader appears to have been designed for a discharge to grass or thick ground cover (i.e., 13
ft/cfs). DWQ staff observed a stand of hardwood trees with a relatively open understory within
Zone 1 of the protected buffer below this discharge location. As such, it appears that the level
spreader should use the design calculation of 100 ft/cfs as stated within our "Draft Level Spreader
Design Options" document dated October 10, 2001 (see
http://h2o.enr.state.ne.us/ncwetiands/level.pdf). The DWQ believes that the length of the spreader
if calculated using the 100 ftlcfs would exceed the maximum length of 300 feet. As such and
primarily due to the existence of the gully feature, this office does not believe that diffuse flow can
be achieved at this discharge location. The DWQ recommends that you evaluate modifying the
existing dry detention basin to a constructed wetland or other acceptable stormwater management
facility that controls nitrogen. Please note that stormwater easements will be required around all
stormwater conveyances and devices and a signed Operation & Maintenance agreement will be
required as conditions of any final approvals from the DWQ for this development.
3. Figure 3 (Wet Retention Basin) - During our site visit on August 24, 2004, the DWQ determined
that the "Wet Retention Basin (Pond #1- West)" had been constructed. Two discharge pipes had
been installed and there easements cleared within the protected buffers. These discharge pipes
have not been approved by the DWQ and are therefore currently in violation of the Neuse
Buffer Rule. The revisions provided within your July 30, 2004 response appear to be acceptable.
However, before we can approve this impact you must provide the DWQ with a plan on how you
intend to remove any utility pipes placed within the 6"DIP easement and restore the buffer. Also,
you must provide assurances that the discharge from the level spreader to the now disturbed buffer
will provide diffuse flow and what measures will be taken if diffuse flow is not achieved.
4. Figure 4 (Road Crossing & Diffuse Flow) - It appears that you will be discharging the
stormwater runoff from the road to the south (uphill) side of the road. It also appears that the
culvert proposed to convey water under the road will receive the stormwater runoff from the south
side of the road (including the stormwater runoff from the road) and discharge it directly through
the buffer and to the stream. Please provide cross sectional details of the crossing (including invert
elevations) and clearly explain how the design will work to achieve the diffuse flow requirements
of the Rule. The DWQ does not dispute the location of the proposed road. However, it still
appears that diffuse flow will not be achieved at this location. The DWQ did determine that this
proposed road was not installed at the time of the August 24"' site visit.
5. Pond 4 - The pond labeled as Pond 4 on the USGS map and located on the northern property
boundary of the "Carramore Subdivision Overall Wetlands Impact" drawings (north of the barns)
has been determined to be exempt from the Neuse Buffer Rules. However, it appears that you are
proposing to construct a stormwater facility in the location of this pond with a discharge pipe that
will extend off property through the Gamble and Hall properties. The DWQ discovered that this
I .
MDC Homes / Carramore SD / DWQ Project No. 04-0826
Page 3 of 3
September 21, 2004
stormwater pond and discharge pipe have been installed at the time of our site visit and that it
discharges to an existing stormwater system. As such, the DWQ does not require any additional
information regarding this discharge.
6. Wetland Fill- The DWQ identified that some minor wetland fill has occurred on the property
outside of protected buffer areas. Please note that this fill must comply with all of the conditions of
General Water Quality Certification No. 3402.
7. Erosion & Sediment Control - Your project must comply with all applicable Erosion & Sediment
Control regulations, obtain an Erosion & Sediment Control Plan (if required) and comply with
Construction Stormwater Permit NCGO 10000 (if required). Erosion and sediment control measures
for the project must be designed, installed, operated, and maintained in accordance with the most
recent version of the North Carolina Sediment and Erosion Control Planning and Design Manual.
Please respond within three weeks of the date of this letter by sending this information to me in writing
and Mike Horan of the DWQ Raleigh Regional Office. If we do not hear from you within three weeks,
we will assume that you no longer want to pursue this project and we will consider the project as
withdrawn.
This letter only addresses the application review and does not authorize any impacts to wetlands, waters
or protected buffers. Please be aware that any impacts requested within your application are not
authorized (at this time) by the DWQ. Please call Mr. Bob Zarzecki at 919-733-9726 if you have any
questions regarding or would like to set up a meeting to discuss this matter.

JRD/bz
4-JIff
edrKey,
Wetlands / 401 nit
cc: Mike Horan, DWQ Raleigh Regional Office
Danny Smith, Assistance & Compliance Oversight Unit
Sean Clark, S&EC, Inc., 11010 Raven Ridge Road, Raleigh, NC 27614
Tom Horstman, Town of Cary, Engineering Department, PO Box 8005, Cary NC 27512
USACE Raleigh Regulatory Field Office
File Copy
Central Files
Filename: 040826
a

&IS [ARIY/E

/
I
f` ... _.i??? cv l / ' ; i j/ / \ is .,\. \\\ \ ? ?• ... ? ? 1 ?, . ?i? ?' ??.? ? '. ?`?
a
.41. z
1 I ,1 Il• _ r. I I I ; \I \\ t``'', 1 t _ J LU ll `?
1
1 ? I I I I I I _ __ ?, -
r -'+ ?,,? I i I ?/i i I ???? ?? ?n it );a? ') {. ]/ ?? - v r?? ?•
.. •/ ? ? ? ? '? Q!
41 51
t .<
O
17
ml
h ; , I I ',, - •? 1 / ? / is / / / - ;? -• ;.??•' \ \ ' \ ) ; , i ? ( ? ? ly r ? ?.?
y1 1[I?1 ,
1 Y) / i / i - '•.2 1, ? ..
11
T, 7
.77
I
t tar, al• r; .
[: ;? I 1 I , l i \, \1 lil 111 Vii
`
???\ .l"!1?7'r t ,?'???/? /I, ')1??LJ...??i? i\?•`-"-'.'.: / /'"?' / ?^`-..,?„?\?-,\\\. r?\\l, j??li11`II II%1 •?Illi?^?/,?
\ ? - )//. 1';I 1 ? i! ?/ //' l I i I') ?;.. ?. ?\ ?•v , \'i 1 '.? ? .. .,1,. `?? ? ?i? ?illll I1+??,11 ?2 ? ?^?b?
??t S I ? ! ' ` : f \ '. 'l \ r \ r/h 1 ` i \ \ ` i JJ , i I 1 h m..
?•, ®??I'll l\I 1 I I \,''?.,? M1 ' ? \`\ J\.\\\`\ ,J` '?<`\\ ?\`. \, `\\ \\ \••\ , \ ?\\ ? '1 / .7 I ? I I I i? \ ? o?
\\•?.\ \I I?I 1 ?..., ti, f
40
•? ,.fF. 1 \ \ `W,? •? ,,\ ` III `' \\\``. \? \ \\,•\` \ \' \\ \X to
••,1,'?,, ,v '.11.1'•, , `1 \ ,? ` \ \,?
r'
1 '\I \ _ A3'_.4yJ tQ.ZO r \ J
(tv
:N
Q o I??N r
© d w a *?
i
Lj.
NS RO
I •??<FT••,.. ?? ?E GRAPHIC SCALE S'?200'
e 1 •• ?• L.??? 1V11S V
Q
100 0 100 200 300
WITHERS RAVF. NEL
ENGINEERS I PLANNERS 1 SURVEYORS
Ill MacKenan Drive Cary, Norlh Carolina 27511 tel: [phone] fax: [phone] v-.waherua-1.c=
CARRAMORE SUBDIVISION OVERALL WETLANDS IMPACT
RY WAKE COUNTY NORTH CAROLINA
Soil & Environmental Consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
u? July 30, 2004
1 i S&EC Project #: 7960.W1
NCDENR-DWQ
Attn: Mr. John Dorney WETLANDS/ 401 GROUP
2321 Crabtree Blvd
Parkview Building JUL S 0 2004
Raleigh, NC 27604
WATER QUALITY SECTION
RE: Response letter for NWP 39, 401-Certification, and Neuse Buffer Compliance
Carramore Residential Subdivision
Cary, Wake County, North Carolina
DWQ Project # 04-0826
Dear Mr. Dorney:
Please refer to the attached letter from Withers and Ravenel for your request for more
information.
Sincerely,
David Gainey
Environmental Technician
Attachments:
Response Letter from Withers And Ravenel
Charlotte Office:
236 LePhillip Court, Suite C
Concord, NC 28025
Phone: [phone]
Fax: [phone]
Greensboro Office:
3817-E Lawndale Drive
Greensboro, NC 27455
Phone: [phone]
Fax: [phone]

ENGINEERS I PLANNERS I SURVEYORS
July 25, 2004
Mr. Sean Clark
Soil & Environmental Consultants
11010 Raven Ridge Road
Raleigh, NC 27614
RE: Carramore
WR Project 203300
S&EC Project 7960.W1
DWQ Project # 04-0826
Dear Sean:
We are providing our initial responses to DWQ's "Request For More Information" later for
this project dated July 15, 2004. We would like for you to review this information and
discuss with us how you think we need to proceed with DWQ. Our responses to DWQ's
comments are as follows:
U
? k 1
1. We are tying to an existing sewer line that is currently located in Zone 1 of the NRB, d
that was constructed prior to adoption of the NRB rules. We could redesign as
marked up on the attached Figure 2, but this would result in more disturbance of
Zone 1 and would hinder our design approach for the level spreader in this area Q? ks"
that is discussed in #2. Questions: 1) would mitigation still be required if we
?Y
redesigned and 2) how much would the mitigation cost be for the current design? ?p
z
2. We believe that the discharge of the level spreader across the sewer easement is
desirable in that the sewer easement will act as a filter strip or a BMP in series. The
easement can be graded to ensure diffuse flow and we could also provide ?p
temporary erosion control netting to ensure that the easement is stabilized. We
believe that this work can be done upfront and provide diffuse flow into the buffer
area. Lastly, we are discharging outside of Zone 2 with a level spreader and I am?
concerned that this comment results from DWQ's last statement that they would
prefer another BMP here instead of dry detention. We meet all nitrogen
requirements and have had to provide dry detention here at as a condition of
approval of the Town of Cary to assist with eliminating storm drainage issues with v u?
the Rigsbee Farm development to the south. \1'
3. Again, we have had to over detain stormwater runoff in this area as a condition of ?h ?U
the Town of Cary's approval. We have utilized the riser and 24" pipe in this area to K'11 ha
bypass the larger storms while the smaller 6" pipe acts as a drawdown for the 1"
storm to discharge thru the level spreader. We will change the detail to move the V
bottom drain from the 6" pipe to the riser box as shown on the attached sketch. We
K:\03\03-300\03300\proj\072504.sclark.doc `a
iii MacKenan Drive i Cary, North Carolina 27511 1 tel: [phone] fax: [phone]oo8 i www.withersravenel.com
Page 2 of 2
July 25, 2004
have also modified the level spreader calculations to show the worst-case scenario]
using the 100 If/cfs for forested areas. This figure has also been marked up & is
attached.
4. The developer of this project only owns the 80' strip of land that contains the
J
proposed Carramore Way collector road. This roadway is part of the Town of Cary??
thoroughfare plan and was required to be connected to Louis Stephens Drive as part Y?
of the project approval. We were therefore, very limited with respect to the design
of this roadway. It just clips the end of the riparian buffer. Both the existing and ?U ?&
proposed grades within this area make it impossible to provide diffuse flow from the k?
catch basins in the street. We have therefore elected to discharge these two storm a?J
drainage inlets upstream of the roadway crossing & the riparian buffer. The culvert
inlet is located outside of the riparian buffer and used to transfer cross drainage from
one side of the road to the other, as does any culvert crossing a riparian buffer. The
only way we see to revise this is to significantly raise the roadway in this area, l SL
which will create more wetland & buffer impacts. Which of these situations is
preferable?
5. Again, this pond was required by the Town of Cary to provide stormwater detention
above existing lots to reduce potential stormwater impacts to existing properties.
This pond and its associated drainage system will tie to an existing storm drainage]
system via the existing yard inlet in the front yard of the Gamble & Hall properties.
There are not any modifications required for the existing system as it was correctly
designed to accommodate the future upstream development.
We have provided you with this information for your review and comment. We will
make any revisions as needed so the appropriate information can be forwarded to
DWQ as soon as possible. Thanks for your continued assistance with this project.
Please advise if you require additional information or have any questions.
Sincerely,
Ja es E Canfield, P.E.
Withers & Ravenel
cc: Jeff Rolan, MDC Homes
K:\03\03-300\03300\proj\072504.scl a rk.doc
PROPOSED IMPACTS
61 ZONE 1 NRB IMPACT 407 SF
62 ZONE 2 NRB IMPACT 902 SF
-1 \ \ \¢
A! 11
JI 1 \ I 1 .' I
4 - i ? -,:
I \ \
\12,04
I \ \
do.
N, ?5
LEVEL SPREADER CALCULATIONS ' \ \ o 1
''?\ \' \ JTt?3\ '\ roc'' '\ ? ? ?\
L-Q,oxl3If/cfs y '\ `? ?c\ \?? '
L-3.98cfs x 13
L- 52'
1 ' \ \ \` dir. ' \ ? ? '\ \ ? \ 2' I ' , \ • f ? -
\ \ J I
\ \ `
12 \46 SFvoti, !- ;
\\ \\ \\ , \ p \\ \ \? I 1\ 1 -_
\\ / I ,
V 51
f2 48' ,,S0\ . 439-,SF - - - --
` ?\ \ \\ \'\ 1 '\ \ '\ 1 1 ?\ \ ?\ ?, I -j \ \ \? h
`\I \ \? 1 \ \ \ 1 1 \ \ i in e
\ 1 1 ' \ 0 ?\ \ ', 1 1 \\\• \`? \? I?` \`? lam. f ?l
50.01`\ \ N2 \\ ?r \ \ \\ - - - - -
IJ''60 R \ 4' BOX F?$ 10 ?\\
IN LIm344.'?O l
51' LE
ill 1 I, '111, ,'•,1 \ ? \ / 1 - -- . ,\` ??\ ? --
1
it Il it \ `'EXIST. MH PROPOSED
SANITARY SEWER r
GRAPHIC SCALE 1'-50•
Note: See Overall Wetlands Impact Map for Area Location N 25 0 25 50 75
WITHERS & RAVENEL
ENGINEERS 1 PLANNERS I SURVEYORS
111 MacKemn Drive Cary, North Carolina 27511 let: 919469-3340 faa: 919467.6008 --ithers-enel.c-
FIGURE 2: AREA OF WETLANDS
CARRAMORE SUBDIVISION WETLANDS IMPACT
CARY WAKE COUNTY NORTH CAROLIA
PROPOSED IMPACTS
C1 ZONE 1 NRB IMPACT 616 SF
C2 ZONE 2 NRB IMPACT 498 5F \
94 44 a -6 FE
' Ex
11

LEVEL SPREADER CALCULATIONS o h°
L-Q,03 1f/cfs x? \
L-0.34cfs x;. I w t
, I I
t +
r ?
•. i t r I I
ry x
?? / ' j f ? I ? I j j III
I i?l I
It 1 I
r t t!' ? I I
' f I i?l 1 I ? I
;';•? \\ ,/ 1/2,107 ?F.,/
/ ? fib ,.? r rr r j7 !
i
1?4 SF•,
.\ Qom. ? ? %
9 SF -8-g °.e

Note: See Overall Wetlands

-N!" IN 11, 1,11, , I l,111 111 11,111: 11 i III b, ---

,, I
tt 1 9 ?.

E TLANDS

\ T'

I I t y, l
? . .\ \? f \ + I
i
r
I y , I
1
;
f 1
1
t
1
I l
1 +
I
1
` I
\
? ? ?
I ,
j i I l t I r 1 \ \
?
,
1 1 I
`
`
`
,
I I
, I
1 1 1 \I it I
1
1
, \
\
\
\
\ I ?\ 1 1' I
1 1 1 1
\
I
I 1 1 '
1 t
?I 1 II / ? 1 r
?? 11201 I ' +

I
1 Ii ! ?
11 i20'/ I/ 3?? \I
1" ,
11 3E ? iONE? 1 ? +?
ZON
I
ONE - t
I I, I fr 11 ,? ? I, i; i I ` I\ \
I t U
? 1
\ \
I i
1 I II I ! /

r
i I
\ \
\ \
,
11 1
/ I ++\\ 1 \\ `\I `
\\

I ? 1 I
E
( t
? I ?
Inl
\
1 ti\ \ 1\
I\t+\ I \
,
I ,
I\ \
I 111 \

I II
I I 10
1 1
I I tl
.
I 1 \\
.?
t (.D I \\+1 O

j I V r I, \ r 1 ? '?\?\ \\\
r I 1 \ \ ` I+ \
TE TION' fl ' ?" r ' ' I \`I \?` ?\r? \\I
:.:
BAS!
ID f- WEST)4 j?a :•::•::•:; .:•.:.; •:::\ INV.=345
TOP BJPE a r3 I r` / / \ ``? \?'`` I \\ \ \\
? \
t 1 ?
I ? I
/ t I I
r I I r
1 I r r
1 I I
1 1 I
20'I LA?D$GA
For Area Location

-? 1
',EASE?IEN
.rr 350.01\
::•.I
\ I ?IN
I 1
1 v t i 1
',Ip2 b1?
I I
I
I 4.:, Ir
GRAPHIC SCALE V-50•
N
25 0 25 50 75_j
WI'T'HERS & RAVENEL
ENGINEERS I PLANNERS I SURVEYORS
111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withenra,,mel.com
FIGURE J. AREA OF WETLANDS
CARRAMORE SUBDIVISION WETLANDS IMPACT
GARY WAKE COUNTY NORTH CAROLINA
BMP #1 WEST -WET POND R
RCP RISER
1' MIN. FREEBOARD
WATER LEVEL DURING STORM I TOP OF DAM EL. 356;0
TRASH H00 L 100 YR. EL= 355.2
?IJ
PEAK FLOW ATTENUATION POOL -
PERMANENT MINIMUM SLOPE 3 1
L / Tf _ POOL r I
ARTH DAM
?_77T _ I 8'x6'x9" CLASS.A
VA?A d/pIF _q --'- ' . I-Lu RIP RAP DISSIPATOR PAD '
(?1R Bu iTdro ghi ILl
W/FABRIC LINER
TI- TA ION DEVICE r alI-IIIT?_I _ V„=4.8 ft/sec
.I I H E I- _
ANTI-SEEP COLLAR
120 LF 24" "O-RING GASKET
RCP. OUTLET PIPE .
0 0.833%
CROSS SECTION @ RISER
DIMENSIONS ELEV.
NORMAL POOL 8,830 SF 350.0
TOP OF DAM WIDTH 10 FT 356.0
ANTI-SEEP COLLAR 72" •x 72" N/A
'EAK ATTENUATION ORIFICE (2)-24"x6' RECTANGLE 354.0
TOP OF ANTI-FLOATATION 7.5'x7.5x2' 353.0
TOP OF RISER 4'x4' BOX 355.1
OUTLET PIPE INVERT IN 24" RCP ' 346.0
OUTLET PIPE INVERT OUT 24" RCP 345.0
0
Soil & Environmental Consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
NCDENR-DWQ
Attn: Mr. John Dorney
2321 Crabtree Blvd
Parkview Building
Raleigh, NC 27604
July 30, 2004
S&EC Project #: 7960.W1
WETLANDS/ 401 GROUP
JUL 3 0 2004
WATER QUALITY SECTION
RE: Response letter for NWP 39, 401-Certification, and Neuse Buffer Compliance
Carramore Residential Subdivision
Cary, Wake County, North Carolina
DWQ Project # 04-0826
Dear Mr. Dorney:
Please refer to the attached letter from Withers and Ravenel for your request for more
information.
Sincerely,
David Gainey
Environmental Technician
Attaclunents:
Response Letter from Withers And Ravenel
Charlotte Office: Greensboro Office:
236 LePhillip Court, Suite C 3817-E Lawndale Drive
Concord, NC 28025 Greensboro, NC 27455.
Phone: [phone] Phone: [phone]
Fax: [phone] Fax: [phone]

ENGINEERS I PLANNERS I SURVEYORS
July 25, 2004
Mr. Sean Clark
Soil & Environmental Consultants
11010 Raven Ridge Road
Raleigh, NC 27614
RE: Carramore
WR Project 203300
S&EC Project 7960.W1
DWQ Project # 04-0826
Dear Sean:
We are providing our initial responses to DWQ's "Request For More Information" later for
this project dated July 15, 2004. We would like for you to review this information and
discuss with us how you think we need to proceed with DWQ. Our responses to DWQ's
comments are as follows:
We are tying to an existing sewer line that is currently located in Zone 1 of the NRB
that was constructed prior to adoption of the NRB rules. We could redesign as
marked up on the attached Figure 2, but this would result in more disturbance of
Zone 1 and would hinder our design approach for the level spreader in this area
that is discussed in #2. Questions: 1) would mitigation still be required if we
redesigned and 2) how much would the mitigation cost be for the current design?
2. We believe that the discharge of the level spreader across the sewer easement is
desirable in that the sewer easement will act as a filter strip or a BMP in series. The
easement can be graded to ensure diffuse flow and we could also provide
temporary erosion control netting to ensure that the easement is stabilized. We
believe that this work can be done upfront and provide diffuse flow into the buffer
area. Lastly, we are discharging outside of Zone 2 with a level spreader and I am
concerned that this comment results from DWQ's last statement that they would
prefer another BMP here instead of dry detention. We meet all nitrogen
requirements and have had to provide dry detention here at as a condition of
approval of the Town of Cary to assist with eliminating storm drainage issues with
the Rigsbee Farm development to the south.
3. Again, we have had to over detain stormwater runoff in this area as a condition of
the Town of Cary's approval. We have utilized the riser and 24" pipe in this area to
bypass the larger storms while the smaller 6" pipe acts as a drawdown for the 1"
storm to discharge thru the level spreader. We will change the detail to move the
bottom drain from the 6" pipe to the riser box as shown on the attached sketch. We
K:\03\03-300\03300\proj\072 504.sclark.doc
111 MacKenan Drive i Cary, North Carolina 27511 1 tel: [phone] fax: [phone] i www.withersravenel.com
Page 2 of 2
July 25, 2004
have also modified the level spreader calculations to show the worst-case scenario
using the 100 If/cfs for forested areas. This figure has also been marked up & is
attached.
4. The developer of this project only owns the 80' strip of land that contains the
proposed Carramore Way collector road. This roadway is part of the Town of Cary
thoroughfare plan and was required to be connected to Louis Stephens Drive as part
of the project approval. We were therefore, very limited with respect to the design
of this roadway. It just clips the end of the riparian buffer. Both the existing and
proposed grades within this area make it impossible to provide diffuse flow from the
catch basins in the street. We have therefore elected to discharge these two storm
drainage inlets upstream of the roadway crossing & the riparian buffer. The culvert
inlet is located outside of the riparian buffer and used to transfer cross drainage from
one side of the road to the other, as does any culvert crossing a riparian buffer. The
only way we see to revise this is to significantly raise the roadway in this area,
which will create more wetland & buffer impacts. Which of these situations is
preferable?
5. Again, this pond was required by the Town of Cary to provide stormwater detention
above existing lots to reduce potential stormwater impacts to existing properties.
This pond and its associated drainage system will tie to an existing storm drainage
system via the existing yard inlet in the front yard of the Gamble & Hall properties.
There are not any modifications required for the existing system as it was correctly
designed to accommodate the future upstream development.
We have provided you with this information for your review and comment. We will
make any revisions as needed so the appropriate information can be forwarded to
DWQ as soon as possible. Thanks for your continued assistance with this project.
Please advise if you require additional information or have any questions.
Sincerely,
J es E Canfield, P.E.
Withers'& Ravenel
cc: Jeff Rolan, MDC Homes
K:\03\03-300\03300\p roj\072504.sdark.doc
k` 4 I ! i .
cDT s 1 ?\ ?j I \ r
PROPOSED IMPACTS
12,04 S
61 ZONE 1 NRB IMPACT 407 SF ?_ \\ \\ \\ \ \\ i \. ? - _
62 ZONE 2 NRB IMPACT 902 SF ....... Y
t
LEVEL SPREADER CALCULATIONS ` °o
`\?\ \\ \ 1t?s\ , \\ tea, \\ ?? ? p \\
L-Q0x13 If/cfs
L-3.98cfs x 13 ?\x
L-52' 0
` \\ \ JB `\l l
I ` \ \ 1 i 15.x'' \\ \'\ \\ `. `-
? ` \ \` \\ err.. ` \'• \ \ ?y 2? 1 \' ? \\ _
\A `?, \`\ 12\4\6 SF
Op/
\• `\ \\ \ \\ \\ ``\ \\ ` ro' ?? I ?` i `
\ \\ \\ ;\ ` racy ? I ? \ ? ? l
f\2 48'2\ SF?' I 64,. ,439`.SF .? -- - - -
\` \\\ \`;\, \\ \\ \I 11 1 ?\ \\ \\\ \\\ I ?I\ \ ?`?`I\`
? 1 1 1 1 \ ?\
\MH ;101
1 1 \ • Q \ \ 1 \ 1 `?\• \ \ \ \ `? l
\\\ \ \\ ` ?\ \\ r1-? It -{ \ - 1
\ \\` \ \\\ " c?O 1 \
50.0\\\,\ --
\\ 00 R _ 4' BOX \ F\E$ 10 \\
11 , \ TION `BAST L
IN p0 I `?1 \ \
it f I 1 111 \ .Si`:..I \-_ 1 / - -- \\\ \\\\ ?-----
I I 1?? / / t \ \ \
fir. L
„R--^•-^e``,e-•---+ r?'^-n ?, \ -Tom,-'.= a?
--p•-^-+7
:?f"7
PROPOSED 8"--
EXIST. MH SANITARY SEWER
GRAPHIC SCALE V-5r
N
Note: See Overall Wetlands Impact Map for Area Location e5 0 25 50
WITHERS & RAV E N E L FIGURE 2: AREA OF WETLANDS
ENGINEERS I PLANNERS 1 SURVEYORS CARRAMORE SUBDIVISION WETLANDS I MPA
111 MacKenan Drive Cnry• North Carolina 27511 lel: 919AG9J340 (ac: 919A67-6008 www-irhenra-ri.com CA Y WAKE COUNTY NORTH CAf
_ \ V V.
PROPOSED IMPACTS \+ CBS. 31
` l • O., ! t
\ \
C1 ZONE 1 NRB IMPACT 616 SF !
C2 ZONE 2 NR13 IMPACT 498 SF \\\? , ??-r ! p '-\
LEVEL SPREADER CALCULATIONS
L-q,xl3If/cfs x? 1 ,
L-0.34cfs x ? ' \ \ \ >T "::: 1 \\ \ \ V ,
WETLANDS\\
17
1 , 1 t .` ?r I
,' .?? 6\ I I, I I v, t\ 1
if k
? ! I i I I j l , I I 1, I, r +. \, .' 1 I + 111 1
`n ' I 1 ! 1 I
1 I `Z01
I I
' ' ! ?i ! I ! ! I I r r ? \ I
30 EI I '
NE ? pN ,
f 30 ! 17-0
r20 10 E 11 11 I I
,7 ,' 11, r' ? EE oN,-+ I' I 1' 11 1
I 1
12,1 r , i' r r I I ? ? 11 1 1 ! 1 t ! j+\+\ 1\\ \\ \ \
.' ?' \, C i t t E I I ! III I )I \it
"v" III f
?.^ r" ? '? ?' \ r J ? I I I ; III II ! i ! 1111 \ I \\ I \\ \\
r , 117 I, I I I 1 I11 \ ? v \ \
-12 fit
,,9 4 SF
13
? ? ? ; \ r cgs ' , \
TENTION'
BASIN
•:.... .:::.\
#y- WEST)4'a 1
D \ ? INV.=34$' ` \`\\\
rOP B(PE Q I r ! l ' \? ` i ?? r' \`\ O\
! ! 1 ' TOR Plf +? 350.0\ `
\
r
! 1 i ' 1 L \ 1 '?1
'SR DR \\1 ,
\ 1 1
' I D2,.
f1 + + , , , 1
-a8 20,1 LA?1D C`A E I,EgSEMEiV ; !;'
7rw8 i<.. =aav...f ea._. r L.?+:a Yw..W?? iL?.+.:.,i???+i.sa?? f....l'Tds.at.:f l..w..,l F..,...,r?.???...it. ? ?wn rt?--?.ei? Ft? I ? ?'"t !'?
GRAPHIC SCALE 1'.50'
Note: See Overall Wellands Im
for Area Location
N
25 0 25 50 7%
WITHERS & RAV E N E L FIGURE 3: AREA OF WETLANDS
ENGINEERS I PLANNERS I SURVEYORS CARRAMORE SUBDIVISION WETLANDS IMPACT
111 MxKenan Drive Cary, Nofth Carolina 27511 lel: 919469-3)40 fax: [phone] www,v.lllmnfavenefcom GARY WAKE COUNTY NORTH CAROLIP
BMP #1 WEST - WET POND
RCP RISER
1' MIN. FREEBOARD
WATER LEVEL DURING STORM TOP OF DAM EL. 356.0
TRASH H00 •100 1'R. EL= 355.2
PEAK FLOW ATTENUATION POOL - -
T? PERMANENT _ MINIMUM SCOPE 3 : 1
L' I rTf/-?_ POOL T
`'T/r?N ARTH DAM
VAU115' ok)Fxf 8'x6'x9" CLASS.A
?R v .I• I- !r - ' _ ' RIP RAP DISSIPATOR PAD
'hi u II (?I W/FABRIC LINER
TI- ATA ION DEVICE Va=4.8 (t/sec
-I I11-
ANTI-SEEP COLLAR
120 LF 24" "O-RING GASKET
RCP. OUTLET PIPE .
®0.EI33?
CROSS SECTION © RISER
?- LEVEL SPIRE ER
= 350.0 ;V-6
r X50.0
348.0 i
o?v s;
2-45' 6" BENDS,
345.E
CONCRETE
BLOCKING
DIMENSIONS ELEV.
NORMAL POOL 8,830 SF 350.0
TOP OF DAM WIDTH 10 FT 356.0
ANTI-SEEP COLLAR 72" •x 72" N/A
TAK ATTENUATION ORIFICE (2)-24'X6" RECTANGLE 354.0
TOP OF ANTI-FLOATATION 7.5'x7.5'x2' 353.0
TOP OF RISER 4'x4' BOX 355.1
OUTLET PIPE INVERT IN 24' RCP 346.0
OUTLET PIPE INVERT OUT 24" RCP 345.0
CONCRETE 6"x6" TEE A?
BLOCKING 6" G
SECTION 0 DRAWDOWN BC,NCRETE
LOOCKING wJ?j1

Soil & Environmental Consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
J'AL www.SandEC.com
July 30, 2004
S&EC Project #: 7960.W1
NCDENR-DWQ
Attn: Mr. John Dorney
2321 Crabtree Blvd
Parkview Building
Raleigh, NC 27604
RE: Response letter for NWP 39, 401-Certification, and Neuse Buffer Compliance
Carramore Residential Subdivision
Cary, Wake County, North Carolina
DWQ Project # 04-0826
Dear Mr. Dorney:
Please refer to the attached letter from Withers and Ravenel for your request for more
information.
Sincerely,
David Gainey
Environmental Technician
Attachments:
Response Letter from Withers And Ravenel
Charlotte Office:
236 LePhillip Court, Suite C
Concord, NC 28025
Phone: [phone]
Fax: [phone]
Greensboro Office:
3817-E Lawndale Drive
Greensboro, NC 27455.
Phone: [phone]
Fax: [phone]
WITH E R S N EL
ENGINEERS I PLANNERS I SURVEYORS
July 25, 2004
Mr. Sean Clark
Soil & Environmental Consultants
11010 Raven Ridge Road
Raleigh, NC 27614
RE: Carramore
WR Project 203300
S&EC Project 7960.W1
DWQ Project # 04-0826
Dear Sean:
We are providing our initial responses to DWQ's "Request For More Information" later for
this project dated July 15, 2004. We would like for you to review this information and
discuss with us how you think we need to proceed with DWQ. Our responses to DWQ's
comments are as follows:
1. We are tying to an existing sewer line that is currently located in Zone 1 of the NRB
that was constructed prior to adoption of the NRB rules. We could redesign as
marked up on the attached Figure 2, but this would result in more disturbance of
Zone 1 and would hinder our design approach for the level spreader in this area
that is discussed in #2. Questions: 1) would mitigation still be required if we
redesigned and 2) how much would the mitigation cost be for the current design?
2. We believe that the discharge of the level spreader across the sewer easement is
desirable in that the sewer easement will act as a filter strip or a BMP in series. The
easement can be graded to ensure diffuse flow and we could also provide
temporary erosion control netting to ensure that the easement is stabilized. We
believe that this work can be done upfront and provide diffuse flow into the buffer
area. Lastly, we are discharging outside of Zone 2 with a level spreader and I am
concerned that this comment results from DWQ's last statement that they would
prefer another BMP here instead of dry detention. We meet all nitrogen
requirements and have had to provide dry detention here at as a condition of
approval of the Town of Cary to assist with eliminating storm drainage issues with
the Rigsbee Farm development to the south.
3. Again, we have had to over detain stormwater runoff in this area as a condition of
the Town of Cary's approval. We have utilized the riser and 24" pipe in this area to
bypass the larger storms while the smaller 6" pipe acts as a drawdown for the 1"
storm to discharge thru the level spreader. We will change the detail to move the
bottom drain from the 6" pipe to the riser box as shown on the attached sketch. We
K:\03\03-300\03300\p roj\072504.sclark.doc
iii MacKenan Drive i Cary, North Carolina 27511 1 tel: [phone] fax: [phone]oo8 i www.wittiersravenet.com
Page 2 of 2
July 25, 2004
have also modified the level spreader calculations to show the worst-case scenario
using the 100 If/cfs for forested areas. This figure has also been marked up & is
attached.
4. The developer of this project only owns the 80' strip of land that contains the
proposed Carramore Way collector road. This roadway is part of the Town of Cary
thoroughfare plan and was required to be connected to Louis Stephens Drive as part
of the project approval. We were therefore, very limited with respect to the design
of this roadway. It just clips the end of the riparian buffer. Both the existing and
proposed grades within this area make it impossible to provide diffuse flow from the
catch basins in the street. We have therefore elected to discharge these two storm
drainage inlets upstream of the roadway crossing & the riparian buffer. The culvert
inlet is located outside of the riparian buffer and used to transfer cross drainage from
one side of the road to the other, as does any culvert crossing a riparian buffer. The
only way we see to revise this is to significantly raise the roadway in this area,
which will create more wetland & buffer impacts. Which of these situations is
preferable?
5. Again, this pond was required by the Town of Cary to provide stormwater detention
above existing lots to reduce potential stormwater impacts to existing properties.
This pond and its associated drainage system will tie to an existing storm drainage
system via the existing yard inlet in the front yard of the Gamble & Hall properties.
There are not any modifications required for the existing system as it was correctly
designed to accommodate the future upstream development.
We have provided you with this information for your review and comment. We will
make any revisions as needed so the appropriate information can be forwarded to
DWQ as soon as possible. Thanks for your continued assistance with this project.
Please advise if you require additional information or have any questions.
Sincerely,
es E Canfield, P.E.
Withers '& Ravenel
cc: Jeff Rolan, MDC Homes
K:\03\03-300\03300\p roj\072504.scl ark.doc
PROPOSED IMPACTS
131 ZONE 1 NRB IMPACT 407 SF
132 ZONE 2 NR13 IMPACT 902 SF
tDt s ? ? i 1\ a\ 4 •?,
I k? \ \ \
??\ \\\ 12, 0 4 S

ell
LEVEL SPREADER CALCULATIONS \\'\\ \
L-QIOxl3 If/cfs
L-3.98cfs x 13 r`. \\ \ \ S ;\ \\\ \ \`
\\ \\ \ JB\\11 \
\ \ \ \ \ \ ' \ \ \ \ \ ` ?\ 1
\ \ ,
-:4, \ i 0
\?\ ?`\ \\ ? ,'\ \c;\ 12\46 \\. SFyo`?' • / ?` ` ?
\\ \ \ \ \ \.\ \ \ \\ \ /acv
\, \/ \\ f2?48'2\ SF? 439`.SF - - -- -
i1\` `\? O\\ \\ \\\\ M H1 IO'l / ? - `\ \ \`\\ \`\? I \ \ ? `\`\ \ I t?Dl ? - - - ?-
` \\ \`1 \\ \\ 1\ I 1, \ \\ I \ _. ??
O \ \ \ \ \ \ , (h \ g
0 -4
\\\ \ \\ \\ \\ \\ , I! \
50.001\\ \\\ V2. \y ?\ ¦ l `/ ` \
\\ \I+? \ \ i , I?. iSO R 4' BOX F10
!N 344:QO lA \ / I \ \
'\ \\ \\ .V' 52' LE \ \\ \
I J I t\, i I \- `.\ `\\
:•:<;:.
I it
"? ?... 7r ? - _;;? ? -. a ...:t'- ..? _ _-,•r ?.,,.-- =-??1
`EXIST. MH PROPOSED
SANITARY SEWER it - ??
J 1 ?? ? `\I I \ J
J ?
CDD
GRAPHIC SCALE V-50•
N
Note: See Overall Wetlands Impact Map for Area Location 25 o 25 50 75
WITHERS & RAV E N E L FIGURE 2: AREA OF WETLANDS
ENGINEERS I PLANNERS I SURVEYORS CARRAMORE SUBDIVISION WETLANDS IMPACT
I I I MacKenan Drive Cary. North Carolma 27511 tel: [phone] faa: 919.467.6006 -witheruavend- GARY WAKE COUNTY NORTH CAROLIP
PROPOSED IMPACTS C?. 31?
`s
C1 ZONE 1 NRB IMPACT 616 SF
C2 ZONE 2 NRB IMPACT 498 5F \ \? , ?? +? J
'Ha 5F
y >•?
tit a t
LEVEL SPREADER CALCULATIONS
L-Q, x13 Ifkfs t x? 1 I tt :_:: ? {\ `? \ `
L-0.34cfs x j,B
L_ ? '^ . ?? \ `. •?.;?:':::• 1 ? . INETLANDS?`
t
I I ? Y ' 1
1V i I ,ter \ \ \` ,1 1 It
f .'tij I / I; < II 1 I l / 1 I \, % .. \ + t t' 1
{ , I i! I 1 I ( I I I i 1 I 1 1
?/ / / ! i I I ?' i 1 1 I I 1 ? I I ? I l i I , \ l\ 1\ \\\ t 1 11
I .' I i I 1 t l I 1 1 I u t I \ I tl I I' t
1 120
' + •'' r 1 ,, I i I 1 I r I 30, I I E .ONE
? ,• \ ?;! ,r 11 ; r' , ! I I I I r'20' ONE ?I ?oN ,i I ;
It
1
H 1?
2 k ?' 11 Q7 ?'F;'.. I f' ?; ?\
?,? . `• • '? ,' 6' \ / ? ? I I I i i I i !I i i i ,III ?\ II, `? 1 `? `?
?-\ .' r % t i' tll I I t I tlt ?
.-? ? ??•'? / ? /? , I v I t t tit i i \ 1 \\t ? \\ \ \? ? ??
t 1 { II ?I
/ it
111
11 4 SF-"
r I I ?, \ r , t `\
199 SF - / TENTION , r tl t ,?t
,
BASIN
D ?E
_ \ r + ??' YVG.ST)4?4 lR:. i .,.•`\,......,..••.,.•\• INV.=34?' ?? \ ??`
TOP B?PE \ ?\ \
--?? - r + + 1 \ I ?? TOR PI1? 350.O?t `
+ I I \
1 1 L i 1
+I !
j r i 1 I %SR DR
;
560 !
?- 1 i 1 { t t I I D2
1
20'' LA DI C` 11 tAAE'N I 1 f
r? r
138 1 4- J
GRAPHIC SCALE V-50'
Note: See Overall Wetlands Impact Map For Area Location N 25 0 25 50 7s,
WITHERS & RAVENEL
ENGINEERS I PLANNERS I SURVEYORS
111 MacK-rl Drive Cy, North Carolina 27511 Iel: 919469-3340 (ax: 919467L008 www,witt-ravenek m
FIGURE 3. AREA OF WETLANDS
CARRAMORE SUBDIVISION WETLANDS IMPACT
CARY WAKE COUNTY NORTH CAROW
BMP #1 WEST - WET POND
RCP RISER
1' MIN. FREEBOARD
}PATER LEVEL DURING STORM TOP OF DAM EL. 356.0
TRASH H00 •100 1'R. EL= 355.2 '
fTIT II?? PEAK FLOW ATTENUATION POOL - =?
?1T T PERMANENT MINIMUM SLOPE 3 1
POOL
`IWA ?jM /rff! - I _ L ARTH DAM
?? 8'x6'x9" CLASS.A
R O?IIw" ?u? I- ' RIP RAP 0 TOR PAD "
W/FADRIC LINER LINER
TI- ATA ION DEVICE r ?IH? V,=4.8 ft/sec
ANTI-SEEP COLLAR
120 LF 24" "0-RING CASKET
RCP. OUTLET PIPE .
® 0.833%
CROSS SECTION @ RISER
DIMENSIONS ELEV.
NORMAL POOL 8,830 SF 350.0
TOP OF DAM WIDTH 10 FT 356.0
ANTI-SEEP COLLAR 72"'x 72" N/A
'EAK ATTENUATION ORIFICE (2)-24'x6' RECTANGLE 354.0
TOP OF ANTI-FLOATATION 7.5'x7.5'x2' 353.0
TOP OF RISER 4'x4' BOX 355.1
OUTLET PIPE INVERT IN 24" RCP 346.0
OUTLET PIPE INVERT OUT 24" RCP 345.0
'o
Soil & Environmental Consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
July 30, 2004
S&EC Project #: 7960.W1
NCDENR-DWQ
Attn: Mr. John Domey
2321 Crabtree Blvd
Parkview Building
Raleigh, NC 27604
RE: Response letter for NWP 39, 401-Certification, and Neuse Buffer Compliance
Carramore Residential Subdivision WETLAND
Cary, Wake County, North Carolina S??t)1 G,,06
DWQ Project # 04-0826 JUL 3 0 20??
Dear Mr. Dorne : WATER QQAUTy 'SECTION
Please refer to the attached letter from Withers and Ravenel for your request for more
information.
Sincerely,
David Gainey
Environmental Technician
Attachments:
Response Letter from Withers And Ravenel
Charlotte Office:
236 LePhillip Court, Suite C
Concord, NC 28025
Phone: [phone]
Fax: [phone]
Greensboro Office.
3817-E Lawndale Drive
Greensboro, NC 27455.
Phone: [phone]
Fax: [phone]
WITHERS 03?,l ! VE EL
ENGINEERS 1 PLANNERS I SURVEYORS
July 25, 2004
Mr. Sean Clark
Soil & Environmental Consultants
11010 Raven Ridge Road
Raleigh, NC 27614
RE: Carramore
WR Project 203300
S&EC Project 7960.W1
DWQ Project # 04-0826
Dear Sean:
We are providing our initial responses to DWQ's "Request For More Information" later for
this project dated July 15, 2004. We would like for you to review this information and
discuss with us how you think we need to proceed with DWQ. Our responses to DWQ's
comments are as follows:
We are tying to an existing sewer line that is currently located in Zone 1 of the NRB
that was constructed prior to adoption of the NRB rules. We could redesign as
marked up on the attached Figure 2, but this would result in more disturbance of
Zone 1 and would hinder our design approach for the level spreader in this area
that is discussed in #2. Questions: 1) would mitigation still be required if we
redesigned and 2) how much would the mitigation cost be for the current design?
2. We believe that the discharge of the level spreader across the sewer easement is
desirable in that the sewer easement will act as a filter strip or a BMP in series. The
easement can be graded to ensure diffuse flow and we could also provide
temporary erosion control netting to ensure that the easement is stabilized. We
believe that this work can be done upfront and provide diffuse flow into the buffer
area. Lastly, we are discharging outside of Zone 2 with a level spreader and I am
concerned that this comment results from DWQ's last statement that they would
prefer another BMP here instead of dry detention. We meet all nitrogen
requirements and have had to provide dry detention here at as a condition of
approval of the Town of Cary to assist with eliminating storm drainage issues with
the Rigsbee Farm development to the south.
3. Again, we have had to over detain stormwater runoff in this area as a condition of
the Town of Cary's approval. We have utilized the riser and 24" pipe in this area to
bypass the larger storms while the smaller 6" pipe acts as a drawdown for the 1"
storm to discharge thru the level spreader. We will change the detail to move the
bottom drain from the 6" pipe to the riser box as shown on the attached sketch. We
K:\03\03-300\03300\proj\072 504.scl ark.doc
iii MacKenan Drive i Cary. North Carolina 27511 1 tel: [phone] fax: [phone]oo8 i www.witheisravenel.com
Page 2 of 2
July 25, 2004
have also modified the level spreader calculations to show the worst-case scenario
using the 100 If/cfs for forested areas. This figure has also been marked up & is
attached.
4. The developer of this project only owns the 80' strip of land that contains the
proposed Carramore Way collector road. This roadway is part of the Town of Cary
thoroughfare plan and was required to be connected to Louis Stephens Drive as part
of the project approval. We were therefore, very limited with respect to the design
of this roadway. It just clips the end of the riparian buffer. Both the existing and
proposed grades within this area make it impossible to provide diffuse flow from the
catch basins in the street. We have therefore elected to discharge these two storm
drainage inlets upstream of the roadway crossing & the riparian buffer. The culvert
inlet is located outside of the riparian buffer and used to transfer cross drainage from
one side of the road to the other, as does any culvert crossing a riparian buffer. The
only way we see to revise this is to significantly raise the roadway in this area,
which will create more wetland & buffer impacts. Which of these situations is
preferable?
5. Again, this pond was required by the Town of Cary to provide stormwater detention
above existing lots to reduce potential stormwater impacts to existing properties.
This pond and its associated drainage system will tie to an existing storm drainage
system via the existing yard inlet in the front yard of the Gamble & Hall properties.
There are not any modifications required for the existing system as it was correctly
designed to accommodate the future upstream development.
We have provided you with this information for your review and comment. We will
make any revisions as needed so the appropriate information can be forwarded to
DWQ as soon as possible. Thanks for your continued assistance with this project.
Please advise if you require additional information or have any questions.
Sincerely,
J es E Canfield, P.E.
Withers & Ravenel
cc: Jeff Rolan, MDC Homes
K:\03\03-300\0330 ftroj\072504.scIark.doc
PROPOSED IMPACTS
61 ZONE 1 NRB IMPACT
62 ZONE 2 NRB IMPACT
to t
4,, i ` -
\\ \\\ 120 4 -
407 SF ?. ?'? \\ \\ \\ _,'
902 SF i ?`-._.'\ •-._.
\0 5
LEVEL SPREADER CALCULATIONS \\ ° \\\\ \v 111
\ \ \
L-3.9acfs x 13 ?;.\ \ \ ` \ \
\\ \\ \ ,J B \\11
I, ON
\\` \\ \ \\ \c;, 12;`4 6 \ S F gory 0
IA
;\
\?, `\\ \\\ \/ \\ `2482\ SF? I 6 3, 439` SF -- - --
1 , I,\ I i
\ \1 \ \
MH,
. \\ \! / - - - -
50.00,\ \ \ B,2
\\ \ \ \? v. ?0 R 4' BOX \ FES 10
TION `BASI £ -
IN 1 344:Q0 l` ::'c \ /, \ \
\
52- LE
LV
\ , ?+
I
, f Iii 'i " \ \ \? ? \ \ \
.r _?`? PROPOSED 8"r'._?.=•??7?.?.:: ?:..?-_?,L_`,?_?.?_-{?...?- ?_?.??. }
vEXIST. MH SANITARY SEWER i %
r I \` ? \ \I h r ,
15/1
14
+ 13 ,
GRAPHIC SCALE !'-50•
N
Note: See Overall Wetlands Impact Map for Area Location 25 0 25 50 75,
WITHERS (?C RAVENEL
ENGINEERS 1 PLANNERS 1 SURVEYORS
1 t 1 MacKenan Drive Cary, North Carolina 27511 tel: [phone]
www.withersravenel.com
FIGURE 2: AREA OF WETLANDS
CARRAMORE SUBDIVISION WETLANDS IMPACT
aRY WAKE COUNTY NORTH CAROUN
PROPOSED IMPACTS 31
C1 ZONE 1 NRB IMPACT 616 SF
?\ i1
C2 ZONE 2 NRB IMPACT 498 SF , ??-
F}?
LEVEL SPREADER CALCULATIONS
L-Q,ox131f/cf?,?
L-0.34cfs x
L-j4e jqi
l>15f'1'TfC.?
I/ "

)\ I . WXZ z2v"X I
\

r ;

WETLA
NDS?

r ?
1 1 I
t Y' 1 !+ +
I I I 1 y' !
I I , i -- ? r l 1 ` 1
i? ? ??\ \\ ? I \ \ 1 1
1
I r I ?' I I I I ; 1 I 1 1 1 11 I
! ? I 1 1 I ' I I U I 1 1 I +' +
`i?' I I ??, I! t 1 I ' I ' ?I I 1 rr ' ,1 \\ ` !
1 IONEI
' , / I i 1 n I t 30 ;ZONE 1 1 I I ;
/ I
I !
;\? !, f rr rr 1, - i I 11 r2 ? ONE _ i i t I j l i 1
it
1 i I t \\
\ ,• 1? ,107 F;?
? ?'? ? ? ` \ /`\ rr rr ? I I I ! 1 i ? 1 ,' ; I ,1 \ 1 \ 11 \\ ?
L I illy 1 ?\ \
i 1???4 SF,-'
1 G9 SF
9? / I
/ 1 , 1 y tl 1 ?, I 1 ? tt \I \ `v
I CA V\ 1 t \\ f !\\ \`\ \\\\ \`?? -\
TEN LION Aka
BAST
ID ##y- WE ST}'4,?4
TOP PIPE r N I r `'
\' + r J D 1 ' 1 TOR PIPF\ ?r 350.0
Z-8 0 9 »
r
1
r1 rr r i I S R ,D R \\\I it
t D2
I
20'; LAODC'AFE';EASE?fEN
L 7,
Y....??C..,C 'r•?,-n rt-^gr t?I ?,Y .?.1? L /
I?:..:df G.....1?0`r:.....$
r' 1
/ I 1 , ! r t rl
GRAPHIC SCALE 1'-50'
Note: See Overall Wetlands Impact kop for Area Location
N
25 0 25 50 75?
WITHERS & RAVENIEL
ENGINEERS I PLANNERS I SURVEYORS
111 MacK- Drive Cary, North Carolina 27511 tel: [phone] (an: 919467-6008 www.widwnr-f.co
FIGURE 3. AREA OF WETLANDS
CARRAMORE SUBDIVISION WETLANDS IMPACT
CARY WAKE COUNTY NORTH CAROW
t3MP #1 WEST -WET POND R
RCP RISER
!AlN, FREEBOARD
}HATER LEVEL DURING STORM TOP OF DAM EL. 356.0
TRASH HOO 100 YR. EL= 355.2
I T -I?I PEAK FLOW ATTENUATION POOL - -
?J? IN PERMANENT MINIMUM SLOPE 3 : 1
POOL r
/? 6M ' -tT 1 i . - ARTH DAM
'/ jj?•''?•••'•77? 8'x6'x9" CLASS.A
AUX- RIP RAP DISSIPATOR PAD
?9R ga"IT?'? I ITS" 1 iT - - W/FA6RIC LINER
TI- ATA ION DEVICE ?I I = %=4.8 ft/sec
i-
ANTI-SEEP COLLAR ?-IT(
120 LF 24" "O-RING GASKET
RCP OUTLI T PIPE .
0 0.833
CROSS SECTION @ RISER
DIMENSIONS ELEV.
NORMAL POOL 8,830 SF 350.0
TOP OF DAM WIDTH 10 FT 356.0
ANTI-SEEP COLLAR 72"'x 72" N/A
'EAK ATTENUATION ORIFICE (2)-24'x6" RECTANGLE 354.0
TOP OF ANTI-FLOATATION 7.5'x7.5'x2' 353.0
TOP OF RISER 4'x4' BOX 355.1
OUTLET PIPE INVERT IN 24" RCP 346.0
OUTLET PIPE INVERT OUT 24" RCP 345.0
'0
i oil & Environmental Consultants, PA
010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
1
www.SandEC.com
t",
July 30, 2004
S&EC Project #: 7960.W1
NCDENR-DWQ
Attn: Mr. John Dorney
2321 Crabtree Blvd
Parkview Building
Raleigh, NC 27604
WETLANDS 1401 GROUP
JUL 3 0 2004
WATER QUALITY Sr_-,..,,,; ,;
RE: Response letter for NWP 39, 401-Certification, and Neuse Buffer Compliance
Carramore Residential Subdivision
Cary, Wake County, North Carolina
DWQ Project # 04-0826
Dear Mr. Dorney:
Please refer to the attached letter from Withers and Ravenel for your request for more
information.
Sincerely,
David Gainey
Environmental Technician
Attachments:
Response Letter from Withers And Ravenel
Charlotte Office: Greensboro Office:
236 LePhillip Court, Suite C 3817-E Lawndale Drive
Concord, NC 28025 Greensboro, NC 27455.
Phone: [phone] Phone: (336) ,540-8234
Fax: [phone] Fax: [phone]

ENGINEERS I PLANNERS 1 SURVEYORS
July 25, 2004
Mr. Sean Clark
Soil & Environmental Consultants
11010 Raven Ridge Road
Raleigh, NC 27614
RE: Carramore
WR Project 203300
S&EC Project 7960.W1
DWQ Project # 04-0826
Dear Sean:
We are providing our initial responses to DWQ's "Request For More Information" later for
this project dated July 15, 2004. We would like for you to review this information and
discuss with us how you think we need to proceed with DWQ. Our responses to DWQ's
comments are as follows:
1. We are tying to an existing sewer line that is currently located in Zone 1 of the NRB
that was constructed prior to adoption of the NRB rules. We could redesign as
marked up on the attached Figure 2, but this would result in more disturbance of
Zone 1 and would hinder our design approach for the level spreader in this area
that is discussed in #2. Questions: 1) would mitigation still be required if we
redesigned and 2) how much would the mitigation cost be for the current design?
2. We believe that the discharge of the level spreader across the sewer easement is
desirable in that the sewer easement will act as a filter strip or a BMP in series. The
easement can be graded to ensure diffuse flow and we could also provide
temporary erosion control netting to ensure that the easement is stabilized. We
believe that this work can be done upfront and provide diffuse flow into the buffer
area. Lastly, we are discharging outside of Zone 2 with a level spreader and I am
concerned that this comment results from DWQ's last statement that they would
prefer another BMP here instead of dry detention. We meet all nitrogen
requirements and have had to provide dry detention here at as a condition of
approval of the Town of Cary to assist with eliminating storm drainage issues with
the Rigsbee Farm development to the south.
3. Again, we have had to over detain stormwater runoff in this area as a condition of
the Town of Cary's approval. We have utilized the riser and 24" pipe in this area to
bypass the larger storms while the smaller 6" pipe acts as a drawdown for the 1"
storm to discharge thru the level spreader. We will change the detail to move the
bottom drain from the 6" pipe to the riser box as shown on the attached sketch. We
K:\03\03-3 00\0 3 3 00\p roj\0 72 5 04. s c l a rk. d oc
iii MacKenan Drive i Cary, North Carolina 27511 1 let: 919.469.3340 1 fax: [phone]ooS i www.withersravenel.com
Page 2 of 2
July 25, 2004
have also modified the level spreader calculations to show the worst-case scenario
using the 100 If/cfs for forested areas. This figure has also been marked up & is
attached.
4. The developer of this project only owns the 80' strip of land that contains the
proposed Carramore Way collector road. This roadway is part of the Town of Cary
thoroughfare plan and was required to be connected to Louis Stephens Drive as part
of the project approval. We were therefore, very limited with respect to the design
of this roadway. It just clips the end of the riparian buffer. Both the existing and
proposed grades within this area make it impossible to provide diffuse flow from the
catch basins in the street. We have therefore elected to discharge these two storm
drainage inlets upstream of the roadway crossing & the riparian buffer. The culvert
inlet is located outside of the riparian buffer and used to transfer cross drainage from
one side of the road to the other, as does any culvert crossing a riparian buffer. The
only way we see to revise this is to significantly raise the roadway in this area,
which will create more wetland & buffer impacts. Which of these situations is
preferable?
5. Again, this pond was required by the Town of Cary to provide stormwater detention
above existing lots to reduce potential stormwater impacts to existing properties.
This pond and its associated drainage system will tie to an existing storm drainage
system via the existing yard inlet in the front yard of the Gamble & Hall properties.
There are not any modifications required for the existing system as it was correctly
designed to accommodate the future upstream development.
We have provided you with this information for your review and comment. We will
make any revisions as needed so the appropriate information can be forwarded to
DWQ as soon as possible. Thanks for your continued assistance with this project.
Please advise if you require additional information or have any questions.
Sincerely,
es E Canfield, P.E.
Withers'& Ravenel
cc: Jeff Rolan, MDC Homes
K:\03\03-300\03300\p roj\072504.sc I ark.doc
I
><? 4,
PROPOSED IMPACTS 1 \? \
I I ?;?, \\ `12,14
61 ZONE 1 NRB IMPACT 407 SF \ \ \ \ \ -
62 ZONE 2 NRB IMPACT 902 5F
LEVEL SPREADER CALCULATIONS
L-Q,,xl3If/cfs \? t\ \\ (" °? \` \? t
L - 3.98cfs x 13 r;.\ \ \ ` \ ,
\ \ S 7, , -
`, \\ J B `\11 -
--
\? \ 12,`46 SF 4o .
;`??\ \\t `\ '\\ ', 48'2\ SF? 4S9`.SF - -
\MH 110'1
b '2
\\ \Ii?'`-\ \ i 1?, f0 R 4' BOX \ FE5 10
I \
'Q -1 ?\ \;: ' 1 \ \\ TI ON `BASI
1 ` \ \ 5LE
1 \
f ?"?'; i IF '?-? ? `J.:' - -'t,` i:,...:? ' ` ? l ? -F \ ?,r..? "''7_r-T^qF.? s?- _ __ ?!`°'.^'a -rr" k
PROPOSED 81'--- ---
/ vEXIST. MH -_ --- /
SANITARY SEWER 1 ;
\
r , ` \\ ? `\I I\ j i
GRAPHIC SCALE V-50'
N
Note: See Overall Wetlands Impact Map For Area Location 25 0 25 50 75
WITHERS & RAVENEL
ENGINEERS I PLANNERS 1 SURVEYORS
111 MacKe- Drive Cary, North Cw.lina 27511 tel: [phone] lax: 919467.6008 -wid--,I.co
FIGURE 2: AREA OF WETLANDS
CARRAMORE SUBDIVISION WETLANDS IMPACT
W WAKE COUNTY NORTH CAROLIA
PROPOSED IMPACTS
C1 ZONE 1 NR8 IMPACT 616 SF
C2 ZONE 2 NRB IMPACT 498 SF
o
r ! :` 1'
LEVEL SPREADER CALCULATIONS
L-Q,,xl31f/ds x
L - 0.34cfs x ?e)
1(VETLANDS?` \`'r
I
r I 1? I I t y? ..\?. r I L\ `r 1 I I.
? `'? i I ? 1 1 I I I I I i V l y --? ?. t l + ? 1
?: j?rj 6 t Y' 1 I I 1 y I I ?? r ?\ \ I 1 + \
? 1 ?? ' / I ? ?\ I \ + 1y it ly , ? ! 1 ? ,i y , ? . r 11 +1 1
%'' ? ? ? I I ?; i t ? ? 11 y+ +y ly I I ? ? i ? I 1 `\ `\\ +I +1 }
? ? t i I :?'• ' t ? I i 11 i I I , ? II I / \ ?\ `\ \\ \ 1 1
I l i I I I I 1 I I 1 1 \' r + \ I t\ I I' 1
1 i `' I r1+ `\ ?, 30 1' 201 I + '
It
l' J' 1 , ?1 I ' i n r 3d
1 OBE
' 17-04E
/ ,\ ?:, r ! ?, 1 I I 1 II r20 ONE_ i 11 I li I j l I
/ , r r ? I + N? . 11 11 i l I I
k?0 H (i % ! + I i I I I r ; , '1 it it i ; i \ \
\ r i+ I r 1./ tl I j \ \ \
1?, 1 q7 ?F; ;/i. I I II 111' it
1 ?„+ \ 1, \ 1 \
1'? ?? \, r r i r r I i I I I II I r r I, \\+ 1\ \1 \ \
r i I I I I l t I I r \ \ \1 \ \
i .' ? ?,,, r\ r i I 1 I I I f ; I u\ 1\ A \ \
' r, ? \ ri I 1r I IJ r u \ 1 \ 1 \
\Ni? // / rr r I t I I i /r `111 `\ 1 `\\ \?\ \?\ \
? `• ??•' I III i III \
?•'\ i \ \? ? / ? ! I I I I i , 1 I I f? . I I 1 II I1 \ ? ? I `? `?
i' , ! I I l II I I I1 ` 1 N
??~' \ i' i' \ / ,rr r ++ 1 1 111 , II I t + 1l'+ `? \ \ \`?
?' \ ro i / i 1 1 11 It \\ 1 ???
`•? - / TENTION `?
BASIN
D ?- IN1rST 4 + `\...• -•...\\ > INV.=34$\,\, \\\ \
TOP B(PE _
`--? - r I + 1 + \ TOR PIE -/350.0+ \
1
r I I I r f \...I +
rt !% / r t ' i S R J DR
\\ 11
`? 1 ? i 1 I 1 \1
1 i t I
??-- 1 ? + ', 1 Q Z8 a » 20'. LAOD$C`A E ?,ErgSEwIEiV I
u t>•- -n P'v r {r pp-??.•???c...+-.^-..e p.,^^ r?+,-r r+?..t rt.......1: i l I I /
7"
\ I ! /t rl
1,38 1
GRAPHIC SCALE V-50•
Note: See Overall Wetlands Im
for Area Location
N
25 0 25 50 754
WITHERS & IZA\/ E N E L FIGURE 3: AREA OF WETLANDS
ENGINEERS I PLANNERS I SURVEYOR 5 CARRAMORE SUBDIVISION WETLANDS; IMPACT
111 MacKenan Drive Cary, Nonh Carolina 27511 tel: [phone] fax: [phone] www.withennveneLcom CARY WAKE COUNTY NORTH CAROLINA
BMP #1 WEST - WET POND Q 9nd
RCP RISER
1' MlN. FREEBOARD
WATER LEVEL DURING STORM TOP OF DAM EL. 356.0
TRASH H00 •100 YR. EL= 355.2
PEAK FLOW ATTENUATION POOL
?I- _ - MINIMUM SLOPE 3 : 1
PERMANENT ?
POOL 7
ARTH DAM
,,C i
? /?{L.rMb 0&l Fy- - _? 8'x6'xV CLASS. A
Y e,. RIP RAP DISSIPATOR PAD'
ok 6d l l w`i 1N?'1/ -ITC I i I)1 - ?,F48 RIc LINER ft/sec
TI- ATA ION DEVICE y III - -
ANTI-SEEP COLLAR - Tl IIT
120 LF 24 "O-RING GASKET
RCP. OUTLET PIPE .
0 833%
CROSS SECTION (K? RISER
DIMENSIONS ELEV.
NORMAL POOL 8,830 SF 350.0
TOP OF DAM WIDTH 10 FT 356.0
ANTI-SEEP COLLAR 72"x 72" N/A
'EAK ATTENUATION ORIFICE (2)-24'x6' RECTANGLE 354.0
TOP OF ANTI-FLOATATION 7.5'x7.5'x2' 353.0
TOP OF RISER 4'x4' BOX 355.1
OUTLET PIPE INVERT IN 24" RCP 346.0
OUTLET PIPE INVERT OUT 24" RCP 345.0
Environmental Consultants, PA
Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
July 30, 2004
S&EC Project #: 7960.W1
NCDENR-DWQ
Attn: Mr. John Dorney
2321 Crabtree Blvd
Parkview Building
Raleigh, NC 27604
RE: Response letter for NWP 39, 401-Certification, and Neuse Buffer Compliance
Carramore Residential Subdivision
Cary, Wake County, North Carolina
DWQ Project # 04-0826
Dear Mr. Domey:
Please refer to the attached letter from Withers and Ravenel for your request for more
information.
Sincerely,
David Gainey
Environmental Technician
Attachments:
Response Letter from Withers And Ravenel
Charlotte Office:
236 LePhillip Court, Suite C
Concord, NC 28025
Phone: [phone]
Fax: [phone]
Greensboro Office:
3817-E Lawndale Drive
Greensboro, NC 27455.
Phone: [phone]
Fax: [phone]
WITHERS O,-, 6AVENEL
I-L
ENGINEERS I PLANNERS I SURVEYORS
July 25, 2004
Mr. Sean Clark
Soil & Environmental Consultants
11010 Raven Ridge Road
Raleigh, NC 27614
RE: Carramore
WR Project 203300
S&EC Project 7960.W1
DWQ Project # 04-0826
Dear Sean:
We are providing our initial responses to DWQ's "Request For More Information" later for
this project dated July 15, 2004. We would like for you to review this information and
discuss with us how you think we need to proceed with DWQ. Our responses to DWQ's
comments are as follows:
We are tying to an existing sewer line that is currently located in Zone 1 of the NRB
that was constructed prior to adoption of the NRB rules. We could redesign as
marked up on the attached Figure 2, but this would result in more disturbance of
Zone 1 and would hinder our design approach for the level spreader in this area
that is discussed in #2. Questions: 1) would mitigation still be required if we
redesigned and 2) how much would the mitigation cost be for the current design?
2. We believe that the discharge of the level spreader across the sewer easement is
desirable in that the sewer easement will act as a filter strip or a BMP in series. The
easement can be graded to ensure diffuse flow and we could also provide
temporary erosion control netting to ensure that the easement is stabilized. We
believe that this work can be done upfront and provide diffuse flow into the buffer
area. Lastly, we are discharging outside of Zone 2 with a level spreader and I am
concerned that this comment results from DWQ's last statement that they would
prefer another BMP here instead of dry detention. We meet all nitrogen
requirements and have had to provide dry detention here at as a condition of
approval of the Town of Cary to assist with eliminating storm drainage issues with
the Rigsbee Farm development to the south.
3. Again, we have had to over detain stormwater runoff in this area as a condition of
the Town of Cary's approval. We have utilized the riser and 24" pipe in this area to
bypass the larger storms while the smaller 6" pipe acts as a drawdown for the 1"
storm to discharge thru the level spreader. We will change the detail to move the
bottom drain from the 6" pipe to the riser box as shown on the attached sketch. We
K:\03\03-300\03300\proj\072504.scl ark.doc
ill MacKenan Drive i Cary, North Carolina 27511 1 tel: [phone] fax: [phone]oo8 i www.withersravenel.com
Page 2 of 2
July 25, 2004
have also modified the level spreader calculations to show the worst-case scenario
using the 100 If/cfs for forested areas. This figure has also been marked up & is
attached.
4. The developer of this project only owns the 80' strip of land that contains the
proposed Carramore Way collector road. This roadway is part of the Town of Cary
thoroughfare plan and was required to be connected to Louis Stephens Drive as part
of the project approval. We were therefore, very limited with respect to the design
of this roadway. It just clips the end of the riparian buffer. Both the existing and
proposed grades within this area make it impossible to provide diffuse flow from the
catch basins in the street. We have therefore elected to discharge these two storm
drainage inlets upstream of the roadway crossing & the riparian buffer. The culvert
inlet is located outside of the riparian buffer and used to transfer cross drainage from
one side of the road to the other, as does any culvert crossing a riparian buffer. The
only way we see to revise this is to significantly raise the roadway in this area,
which will create more wetland & buffer impacts. Which of these situations is
preferable?
Again, this pond was required by the Town of Cary to provide stormwater detention
above existing lots to reduce potential stormwater impacts to existing properties.
This pond and its associated drainage system will tie to an existing storm drainage
system via the existing yard inlet in the front yard of the Gamble & Hall properties.
There are not any modifications required for the existing system as it was correctly
designed to accommodate the future upstream development.
We have provided you with this information for your review and comment. We will
make any revisions as needed so the appropriate information can be forwarded to
DWQ as soon as possible. Thanks for your continued assistance with this project.
Please advise if you require additional information or have any questions.
Sincerely,
es E Canfield, P.E.
Withers & Ravenel
cc: Jeff Rolan, MDC Homes
K:\03\03-300\03300\p roj\072504. scl ark.doc
PROPOSED IMPACTS
131 ZONE 1 NRB IMPACT 407 SF
82 ZONE 2 NRB IMPACT 902 SF
i
4
l \
\`\\12,04\-
I I_
LEVEL SPREADER CALCULATIONS \\ oo
L-Qoxl3If/cfs \? \\ ?\ (n \o?' \`\ `? ???
L-3.98cfs x 13
'\ ?\ \ J B `\11
X \ \ \ \ \
0
\\\ \\\ \\\ \c\\ `\\ 12;46 \ SF a??' • /\\ ;
??'?.? \\\ \ \/ ?2 482\ SFJ\` 439`.SF
\, \MH `101 - 01
?-()-
\ \ '\ 1 1 `?\ ?` ?'I ??\ `? o
\ ? '` N` '\ ? \\ \ ,\ ?t ` ? ? 1. \\ ? I ? =.c - - - - - 4
Q \ \\ \ \ \ \ 1/? ` ` \ -
cS \ \
All
so.
\\ 60 R 4' sox FE5 10 -
I
TION `BASI --`' _
+N 344` ?l ::.`•'t \ 1 \ \
yu\
QCAr%rQ
1 11 \ ` \ 5 LE \\ 1 `
\i1 ? ?::t:(•1 - ` \ - -- \ ? ?\ "- _ -
V\ N I u-
r "',' , •?„-+?\ "'d -??-?.,.T,.j-41a.....? i ..s .?-...? T^"....?-r --•?..-,t? t. e''^'}?r?^-`t e-» -r7. : -j' '-s*...
=''•p• ?-'..`1-^•.=r y;ti••+._ ?i.,.?d 1,..,.;x,3 '?,y,..+t=- -T«, L. 77.
/ r (1 ?\?? ` t `? it ? '+.??x ..a t
- PROPOSED 8---
/ 5`,? \ \\\ "EXIST. MH SANITARY SEWER
1 1 ??, ,?I 11 ;
I
CTD
GRAPHIC SCALE
N
Note: See Overall Wetlands Impact Map for Area Location 25 0 25 50 75
WITHERS 4:!?r RAVEMEL
ENGINEERS I PLANNERS I SURVEYORS
111 61,,K-. Drive Cary. North Cuoli- 77511 tel: [phone] ra.: 919>67bW8 www.withersraveneLcom
FIGURE 2: AREA OF WETLANDS
CARRAMORE SUBDIVISION WETLANDS IMPACT
TRY WAKE COUNTY NORTH CAROLIA
PROPOSED IMPACTS
C1 ZONE 1 NRB IMPACT 616 SF
C2 ZONE 2 NRB IMPACT 498 5E

\ \a , i?_ s i

l ' ' / __ ,•r ' _ l
' O

LEVEL SPREADER CALCULATIONS
1
1
..

L-Q x13 If/cfs t l
0
x? I I?\ '?
::: ?
?\ .
?? , -
.e ` \\ \
L-0.34cfs x;,, \ sz __:: +
`
1?VETL\ANDS\\ 1
`/r y
5J'DL IJ /v111?. ??
1 \ 1
? '?
/l ? \ ?\\
r
,
'
1 I ?
j
i ??r
I ?
! e ,
,' / `? ! ( , r? 6 , y 11 I I 1 1 'V
? i r ; 1 ? X 1 1
?•fy r .'1j? I ? I 'C \t t t I / I ' 1 ? \ / ? " ` ?"? r 1 \ 11
I ; 1 , j l l i I \ \\ 1\ ' i
i ! ? 1 11 I I I 1 1 II ? ? \ I \ I 1 1
r I %f I I j 1 1 j I `? i ; !r ' It 1 j Qo 1 1 I II II
3? i/ ' ? ?• i l I i I I I I ' I r'± \ I 3p I '
j; 03 '1 1 t i r l I pNE1 i i`
? .' %? 11 1 l ? I I I it ?!Zp, 30 ZONE ? 11 ? I ? i t
\ %7 ;' , ? ? ! ONE- i 11 11 , I I
I N? 1 I I I
-'? 1?, 1 Q7 ?F I ' ' ?? ',? ? I J' `?' \\
/ f % `i.i \ , \ J ! ? i? ? ? I I ? ? 1 III ! I ,? ! j \\`, 1`\ `\j \ `?
V, I
V. ? I I I, ?; ! 1 1,1\ \ I \\ I `\ \
?•?\ ??' ''' \? ?? ? 11 1 1 I I t I I ! I 1 fill
\\ ``1 \\\ \\\
i ? I I f II n\
I I
I I 1 I\1 \` . \
12 h/ \ r 11 `I `I';i?t I `e'll ???\ `?\\ \` =? \`\
IL A
11 3 4 SF," I ,1 1\ 10
L) I
(0 1
9 SF TE 110N
BASIN ? r
#y ?? ....:....... sic \\ \\
D % - WE/ST }E' 4 :•::: \ INV.=30 \``\
? TOP PrPE a
? ! ' 1 p 1 1 TOR PI?
FF # 350.00\\
Z-8 2 ? r ' I ' t r 1 1
,,•? ?^?- L{"_ 0'11' L `ARE I,EgSEMEN
+.,,.b..a a....Zi ?.:a...?t:'u..a.?i"'rta?.f?.?' ? a:..:.?:9?
13 8
1 r it rl
GRAPHIC SCALE 1'-50•
Note: See Overall Wetlands Impact Map For Area Location
i I
1 `x .. !N
t ?1' 1
`SR ,0R `\1 1
t '1?D21 ?
I 1
i 1 I
N
25 0 25 50 75?
WITHERS & RAVENEL
ENGINEERS 1 PLANNERS 1 SURVEYORS
I I I M.cKe- Drive Cary, NOrth Carolina 27511 tel: 919LA69-3340 b.. 919-067-6008 www.vrirf,ersraveneLcom
FIGURE J. AREA OF WETLANDS
CARRAMORE SUBDIVISION WETLANDS IMPACT
W WAKE COUNTY NORTH CAROW
BMN #1 WEST - WET POND
RCP RISER
WATER LEVEL DURING STORM
TRASH HOD

TI I - PEAK FLOW ATTENUATION POOL
PERMANENT
- POOL

1 X A46 014OF
?
14k eon ?

TI- ATA ION DEVICE
1 MIN, FREEBOARD
.TOP OF DAM EL. 356.0
100 YR. EL= 355.2
MINIMUM SLOPE 3 : i
:ARTIi DAM
8'xVx9' CLASS.A
' RIP RAP DISSIPATOR PAD
W/FABRIC LINER
_\4,=4.8 (t/sec
ANTI-SEEP COLLAR 1 '1-41
~illr-
120 LF 24' "O-RING GASKET
RCP OUTLET PIPE .
0 0.833%
CROSS SECTION @ RISER
DIMENSIONS ELEV.
NORMAL POOL 8,830 SF 350.0
TOP OF DAM WIDTH 10 FT 356.0
ANTI-SEEP COLLAR 72" *x 72" N/A
'EAK ATTENUATION ORIFICE (2)-24•x6' RECTANGLE 354.0
TOP OF ANTI-FLOATATION 7.5'x7.5'x2' 353.0
TOP OF RISER 4'x4' BOX 355.1
OUTLET PIPE INVERT IN 24" RCP 346.0
OUTLET PIPE INVERT OUT 24" RCP 345.0
Soil & Environmental Consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
July 30, 2004
S&EC Project ##: 7960.W1
NCDENR-DWQ
Attn: Mr. John Dorney
2321 Crabtree Blvd
Park-view Building
Raleigh, NC 27604
?E?tANDS 1401

RE: Response letter for NWP 39, 401-Certification, and Neuswlii `r'C6mpliance
Carramore Residential Subdivision
Cary, Wake County, North Carolina
DWQ Project # 04-0826
Dear Mr. Dorney:
Please refer to the attached letter from Withers and Ravenel for your request for more
information.
Sincerely,
David Gainey
Environmental Technician
Attachments:
Response Letter from Withers And Ravenel
Charlotte Office:
236 LePhillip Court, Suite C
Concord, NC 28025
Phone: [phone]
Fax: [phone]
Greensboro Office:
3817-E Lawndale Drive
Greensboro, NC 27455.
Phone: [phone]
Fax: [phone]
WITHERS 0,,',-`RAVENEL
ENGINEERS I PLANNERS I SURVEYORS
July 25, 2004
Mr. Sean Clark
Soil & Environmental Consultants
11010 Raven Ridge Road
Raleigh, NC 27614
RE: Carramore
WR Project 203300
S&EC Project 7960.W1
DWQ Project # 04-0826
Dear Sean:
We are providing our initial responses to DWQ's "Request For More Information" later for
this project dated July 15, 2004. We would like for you to review this information and
discuss with us how you think we need to proceed with DWQ. Our responses to DWQ's
comments are as follows:
We are tying to an existing sewer line that is currently located in Zone 1 of the NRB
that was constructed prior to adoption of the NRB rules. We could redesign as
marked up on the attached Figure 2, but this would result in more disturbance of
Zone 1 and would hinder our design approach for the level spreader in this area
that is discussed in #2. Questions: 1) would mitigation still be required if we
redesigned and 2) how much would the mitigation cost be for the current design?
2. We believe that the discharge of the level spreader across the sewer easement is
desirable in that the sewer easement will act as a filter strip or a BMP in series. The
easement can be graded to ensure diffuse flow and we could also provide
temporary erosion control netting to ensure that the easement is stabilized. We
believe that this work can be done upfront and provide diffuse flow into the buffer
area. Lastly, we are discharging outside of Zone 2 with a level spreader and I am
concerned that this comment results from DWQ's last statement that they would
prefer another BMP here instead of dry detention. We meet all nitrogen
requirements and have had to provide dry detention here at as a condition of
approval of the Town of Cary to assist with eliminating storm drainage issues with
the Rigsbee Farm development to the south.
3. Again, we have had to over detain stormwater runoff in this area as a condition of
the Town of Cary's approval. We have utilized the riser and 24" pipe in this area to
bypass the larger storms while the smaller 6" pipe acts as a drawdown for the 1"
storm to discharge thru the level spreader. We will change the detail to move the
bottom drain from the 6" pipe to the riser box as shown on the attached sketch. We
003\03-3 00\0 3 3 00\p roj\0 72 5 04. s d a rk. d oc
iii MacKenan Drive i Cary, North Carolina 27511 1 tel: [phone] fax: [phone]oo8 i www.withersravenel.com
Page 2 of 2
July 25, 2004
have also modified the level spreader calculations to show the worst-case scenario
using the 100 If/cfs for forested areas. This figure has also been marked up & is
attached.
4. The developer of this project only owns the 80' strip of land that contains the
proposed Carramore Way collector road. This roadway is part of the Town of Cary
thoroughfare plan and was required to be connected to Louis Stephens Drive as part
of the project approval. We were therefore, very limited with respect to the design
of this roadway. It just clips the end of the riparian buffer. Both the existing and
proposed grades within this area make it impossible to provide diffuse flow from the
catch basins in the street. We have therefore elected to discharge these two storm
drainage inlets upstream of the roadway crossing & the riparian buffer. The culvert
inlet is located outside of the riparian buffer and used to transfer cross drainage from
one side of the road to the other, as does any culvert crossing a riparian buffer. The
only way we see to revise this is to significantly raise the roadway in this area,
which will create more wetland & buffer impacts. Which of these situations is
preferable?
5. Again, this pond was required by the Town of Cary to provide stormwater detention
above existing lots to reduce potential stormwater impacts to existing properties.
This pond and its associated drainage system will tie to an existing storm drainage
system via the existing yard inlet in the front yard of the Gamble & Hall properties.
There are not any modifications required for the existing system as it was correctly
designed to accommodate the future upstream development.
We have provided you with this information for your review and comment. We will
make any revisions as needed so the appropriate information can be forwarded to
DWQ as soon as possible. Thanks for your continued assistance with this project.
Please advise if you require additional information or have any questions.
Sincerely,
J es E Canfield, P.E.
Withers & Ravenel
cc: Jeff Rolan, MDC Homes
K:\03\03-300\03300\p roj\072504.sc la rk.doc
PROPOSED IMPACTS
61 ZONE 1 NRB IMPACT 407 5F
62 ZONE 2 NRB IMPACT 902 SF
I !1 t \ ? 1 i '/ t
I ?, t a
?;?\ \\\ 12, 04 S

i' \ t -
LEVEL SPREADER CALCULATIONS \.?\ \ °
L-Qox131f/cfs
L-3.9Bcfsx13 ?\\ `\ \ S \\ \\ \\ `
L- 52'
\
\\ ,\\ \ \\\ \\\ \A\\ \ \`\ 12;46 SFyti• o
0
\`\ \\\ \`\ \\- \\\ \ \ \\ \\ rp y? \ \`\ \` `? '
\`, `\ \\\ `, \/ 1'2
482\ SFJ``' ??J,439` SF .; - rr
.'. .\ \ \ \ \ \ \ . \ .\ -'l--
`` ` MH h 0\
`\ 1 \ \1 \ \ \ \ 1 1 to -
- ----------- -----------------
so.o? ii B_2 ----
`\ PO R 4' BOX \! F'E1S 10
541 ?\ TI ON `BAST L
IN, AA,
'-'?O
LA
?AM
I
11 ' tai/ l/ J / ;.. \ \ \ ?\ \ ?\ ?--
IF N
--?';:,\" -- PROPOSED 8 -- ='
'EXIST. MH
\' \ SANITARY SEWER ;
,;• ?, (tom Ca)
GRAPHIC SCALE V-50'
N
Kole: See Overall Wetlands impact Map for Area Location 25 0 25 50 75
WITHERS & RAVENEL
ENGINEERS 1 PLANNERS I SURVEYORS
111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] faa: 919-467-6008 www.withersraveneLaxn
FIGURE 2: AREA OF WETLANDS
CARRAMORE SUBDIVISION WETLANDS IMPACT
TRY WAKE COUNTY NORTH CAROLIA
PROPOSED IMPACTS CBD\. 31?
C1 ZONE 1 NRB IMPACT 616 5F ;) I /,' ! z
C2 ZONE 2 NRB IMPACT 498 5F
LEVEL SPREADER CALCULATIONS
L - Q, x 13 If/ds x 1 tt '
L-0.34cfs x.Ve w :.:.
L-? ? 1 \ \\\\\ WETLANDS
\y 1 V k,
it I
t i I + 1 1 I i 1 l r j Il r 1 It I j\
V?.' , r t; ,•?' t I i I ? I, ' I t 1 t \ ; 30 112
1 1 '
?? j% i I i 1 I I I n i t' 30' I , ONE A ONEi i'
r
,•\ ;;, ;` 11 , ??: III 1 tl r20 ' ONE J ? ? I ,? , ? , ,
107 F;'?
\1 \
f V,
r/ I 1 1i 1 , t u\ 1 \ , \ \
i /\!\? \ / ! / I I I 11 I ( / + tit \ 1 \ 1 \ \\
?•? >r" '' 6 \ / ! 1 I I , i I I I, 1, r i I 1111 \ \' \\ 1 ?\ \\
?\ \ / ( !It I I 1 111
?J1 `\ i' i' ' \ ' /rr !I 1 1\ %I t II , 5, It \ \\` N\ \??
y ! 1\t
' `\ ? ? 12 •J/ ?' ? /' / / ' r 11 11 it 'tl ll I 1 ?` \\\lt \\1\\ ?? \\\ \ ??` \?
It t
' 11 4 SF 1 n', \ o ,
13 (0
TEP110N / ,\0
BASIC) / ;'
--' ' t D # WEST)4)(4' ' ::`\..... \ INV.=345 TOP P(PE Q
r t 1 \ ?' T04 PI,PF\ -'350.00
' \\
L \ 1 'll
t I r t 1 I SR DR \1 1
?- l 1 D2
1
1 1-
--80?'\ 20'1 LAOD$GA E IIEASEMEIN t'I 11 I
13 B .+w+ ' R W.e.s..?i:..,..:.i h?.?+? i?.....:.i ??. . .;^?c, .-P*•.•a? T"'/ a-.•«,-..ter ? •-•? ?-._-l ? t ? 'fie
fir'' ?. ?r'?t.'.' k ??.,r ,.r ^?r?'--•? I r•'T"'J11 t "?t
I 1
GRAPHIC SCALE V-50•
. Note: See Overall Wetlands Impact Map for Area Location
N
25 0 25 50 75?
WITHERS & FaAV E ICI E L FIGURE J. AREA OF WETLANDS
ENGINEERS 1 PLANNERS I SURVEYORS CARRAMORE SUBDIVISION WETLANDS 'IMPACT
111 M,cKert- Drive Cary, Nonh Carolina 27511 tel: [phone] faa: 919-467-008 www.wilhenraveneLcom CARY WAKE COUNTY NORTH CAROh
l3MP #1 WEST - WET POND
RCP RISER
WATER LEVEL DURING STORM
TRASH H00
? -1
1 PEAK FLOW ATTENUATION POOL
'T
I? TIm i (--m PERMANENT
POOL
h.?16" "'-IT I
VAS
ok Bow i
TI- ATA ION DEVICE
1' MIN. FREEBOARD
,TOP OF DAM EL. 356.0
100 YR. EL= 355.2
MINIMUM SLOPE 3 : 1
:ARTH DAM
8'x6'x9" CLASS.A
RIP RAP DISSIPATOR PAD
W/FABRIC LINER
_Vss=4.8 ft/sec
ANTI-SEEP COLLAR
120 LF 24" "O-RING GASKET
RCP. OUTLET PIPE .
o 0.833%
CROSS SECTION © RISER
DIMENSIONS ELEV.
NORMAL POOL 8.830 SF 350.0
TOP OF DAM WIDTH 10 FT 356.0
ANTI-SEEP COLLAR 72"x 72" N/A
'EAK ATTENUATION ORIFICE (2)-24•xG' RECTANGLE 354.0
TOP OF ANTI-FLOATATION 7.5'x7.5'x2' 353.0
TOP OF RISER 4'x4' BOX 355.1
OUTLET PIPE INVERT IN 24" RCP 346.0
OUTLET PIPE INVERT OUT 24" RCP 345.0
F WATF Michael F. Easley, Governor
9
O
p William G. Ross Jr., Secretary
O G North Carolina Department of Environment and Natural Resources
ua) r
Alan W. Klimek, P. E. Director
Division of Water Quality
p
Coleen H. Sullins, Deputy Director
Division of Water Quality
July 15, 2004
DWQ Project # 04-0826
Wake County
(S Page 1 of 3
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
MDC Homes
2501 Blue Ridge Road, Suite 150
Raleigh, NC 27607
Subject Property: Phase 1, Carramore Subdivision, Davis Drive, Cary, NC
UT to Turkey Creek [03-04-02, 27-33-2, C NSW]
REQUEST FOR MORE INFORMATION
To Whom It May Concern:
On May 21, 2004, the Division of Water Quality (DWQ) received your application dated May
20, 2004 to impact 0.0099 acres of wetlands, 16 feet of stream and 8,139 square feet (ft) of
protected riparian buffers to construct the proposed subdivision. The DWQ has determined that
your application was incomplete and/or provided inaccurate information as discussed below.
The DWQ will require additional information in order to process your application to impact
protected wetland, streams and/or buffers on the subject property. Therefore, unless we receive
the additional information requested below, we will have to move toward denial of your
application as required by 15A NCAC 2H.0506 and 2B .0233(8) and will place this project on
hold as incomplete until we receive this additional information. Please provide the following
information so that we may continue to review your project.
Additional Information Requested:
Figure 2 (Sewer) - The proposed sewer impacts to the protected riparian buffer involve a
non-electric utility line impact other than a perpendicular (75 degrees to 105 degrees)
crossing in Zone 1. This impact is designated as "allowable with mitigation" within the
Neuse Buffer Rule (15A NCAC 02B .0233(6)). As such mitigation will be required for the
407 square feet of Zone 1 impacts at a mitigation ratio of 3:1 resulting in 1,221 square feet
of required buffer mitigation. We understand that you wish to make a payment into the
Riparian Buffer Restoration Fund to satisfy this mitigation condition. Please note that this
will be a condition of any final DWQ approval of this project.
2. Figure 2 (Level Spreader) - You have proposed to discharge stormwater from the level
spreader directly to the disturbed soil associated with the sewer easement. Typically
NCUIE R
N. C. Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
(9191 733-1788 (nhnna)_ 919-733-8R93 (fax). (httn•//h7n anrstita nr._us/nrwetlandsl
V
MDC Homes / Carramore SD / DWQ Project No. 04-0826
Page 2 of 3
July 15, 2004
discharging to disturbed soils is not as desired as discharging to undisturbed soils. As such,
this office has concerns about erosion occurring within the buffer in violation of the diffuse
flow provision of the Rule and the potential for erosion occurring that may effect the
structural stability of the sewer line and manhole. If the sewer easement is not properly
graded, we believe that there will be potential for the discharge runoff to flow along the
newly constructed sewer easement in a manner other than diffuse flow and possibly leading
to erosion. Also, based on the topography provided in your plans it appears that an
ephemeral drainage channel or gully may exist within the buffer immediately below the
discharge location of the level spreader. This may also prevent diffuse flow and lead to
erosion within the buffer. Finally, you have used 13 if/cfs in your calculations in sizing the
length of the proposed level spreader. As per our Level Spreader Design Options, this
number is only appropriate for grass or thick ground cover. Please provide evidence that
grass or thick ground cover exists. Please explain how you intend have this area stabilized
prior to discharging to it and provide additional justification as to why you believe that
diffuse flow will be achieved at this discharge location considering the site specific
conditions (photographs of the area may be helpful). Some other option (e.g., stormwater
management facility that controls nitrogen) may be more appropriate for this discharge
location.
3. Figure 3 (Wet Retention Basin) - It appears as though you have proposed to use the
bypass alternative option available in the Level Spreader Guidance Options. However, it
appears that you have provided dual bypass pipes through the buffer. Please redesign so
that only one bypass pipe is required. Please note that it still must be designed to send at
least the 1" per hour intensity storm through the level spreader. Again, you have chosen to
use 13 if/cfs in your calculations, which is only acceptable for grass or thick ground cover.
Please provide evidence that grass or thick ground cover exists.
4. Figure 4 (Road Crossing & Diffuse Flow) - It appears that you will be discharging the
stormwater runoff from the road to the south (uphill) side of the road. It also appears that
the culvert proposed to convey water under the road will receive the stormwater runoff
from the south side of the road (including the stormwater runoff from the road) and
discharge it directly through the buffer and to the stream. Please provide cross sectional
details of the crossing (including invert elevations) and clearly explain how the design will
work to achieve the diffuse flow requirements of the Rule.
5. Pond 4 - The pond labeled as Pond 4 on the USGS map and located on the northern
property boundary of the "Carramore Subdivision Overall Wetlands Impact" drawings
(north of the barns) has been determined to be exempt from the Neuse Buffer Rules.
However, it appears that you are proposing to construct a stormwater facility in the location
of this pond with a discharge pipe that will extend off property through the Gamble and
Hall properties. Will this discharge tie into an existing stormwater drainage system without
requiring modifications to the system?
Please respond within three weeks of the date of this letter by sending this information to me in
writing and Steve Mitchell of the DWQ Raleigh Regional Office. If we do not hear from you
MDC Homes / Carramore SD / DWQ Project No. 04-0826
Page 3 of 3
July 15, 2004
within three weeks, we will assume that you no longer want to pursue this project and we will
consider the project as withdrawn.
This letter only addresses the application review and does not authorize any impacts to wetlands,
waters or protected buffers. Please be aware that any impacts requested within your application
are not authorized (at this time) by the DWQ. Please call Mr. Bob Zarzecki at 919-733-9726 if
you have any questions regarding or would like to set up a meeting to discuss this matter.
Sincerely,
Ko(-?
Dorney,
), Wetland1/40 Unit
JRD/bz
cc: Sean Clark, S&EC, Inc., 11010 Raven Ridge Road, Raleigh, NC 27614
Tom Horstman, Town of Cary, Engineering Department, PO Box 8005, Cary NC 27512
Steve Mitchell, DWQ Raleigh Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Central Files
Filenamc: 040826
MEMORANDUM
TO: John Dorney
Non-Discharge Branch
Regional Contact: Steve Mitchell
WQ Supervisor:
Date:
SUBJECT: WETLAND STAFF REPORT AND RECOMMENDATIONS
Facility Name Carramore Subdivision c/o MDC Homes
Project Number 04 0826
Recvd From APP,
Received Date 5/21/04 Recvd By Region
Project Type residential S/D

Stream
CI
County Wake
County2
Region Raleigli
Permit Wetland Wetland Wetland Stream C100 Acres Feet
Type Type Impact Score Index Prim. supp. Basin Req. Req.
Stream Impacts (ft.)
?'f-1?clet 3imtr-l=.
?,Irl •seliit-eft
39 BLH FT O N F 27-33-2 F NSW 30,402. 0.01 16.00
NBR Buffers FT _0N 1__?F_F_30,402. 0.19 F_ F_-F-
F-F-PT _0N
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? 0 Y 0 N
Is Mitigation required? 0 Y 0 N
Provided by Region: Latitude (ddmmss) 354758
Recommendation: 0 Issue 0 Issue/fond 0 Deny
Longitude (ddmmss) 785108
Comments:
_June 4, 2004
Will wet detention basin/pond 1 achieve nutrient reduction required for direct discharge? If not needs
a level spreader. Road crossing in Figure 4 can be moved to minimize buffer impacts,
cc: Regional Office
Central Office Page Number 1
M r
?3 :0326
Soil & Environmental Consultants, PA,
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
WETLANDS I q01 GROUP
May 20, 2004
S&EC Project #: 7960.W1
WATER GDALIV SEGTION
NCDENR-DWQ US Army Corps of Engineers
Attn: Mr. John Dorney Attn: Ms. Jennifer Burdette
2321 Crabtree Blvd 6508 Falls of the Neuse Road
Parkview Building Suite 120
Raleigh, NC 27604 Raleigh, NC 27615
RE: Request for NWP 39, 401-Certification, and Neuse Buffer Compliance
Carramore Residential Subdivision
Cary, Wake County, North Carolina
Dear Ms. Burdette and Mr. Dorney:
On behalf of MDC Homes (current property owner), we hereby request authorization
from the US Army Corps of Engineers (USACE) to use Nationwide Permit 39 to cover
impacts to wetlands and an intermittent stream channel resulting from the installation of a
proposed residential subdivision. We also request written concurrence from the North
Carolina Division of Water Quality (DWQ) that the project complies with the associated
water quality certification and the Neuse Buffer Rules for proposed impacts. A Pre-
construction Notification Application (PCN) is attached, which includes an agent
authorization form.
The proposed residential subdivision is located immediately west of Davis Drive (SR
1613) and approximately 2,200 feet north from the intersection of Davis Drive and High
House Road (SR 1615) in Cary, NC. Please see the attached USGS site vicinity map.
S&EC conducted a detailed wetland delineation and Neuse Riparian Buffer evaluation in
June 2003 for the +/- 105-acre property then owned by the Edwards Family. The 65-acre
portion of the property with the proposed development has since been sold to MDC
Homes (the applicant). Six old irrigation/fann ponds exist on the 105-acre property
originally evaluated by S&EC. Three of these ponds had been drained prior to S&EC's
field evaluation and prior to DWQ's site meeting. The 65-acre site plan includes these M i-r'
drained ponds. S&EC conducted a site meeting with Ms. Deborah Edwards of the o ?+
NCDWQ on August 25, 2003 to review the potentially subject features on property.
Charlotte Office: Greensboro Office: Hickory_ulllcc:
236 LePhillip Court, Suite C 3817-E Lawndale Drive 622 Coon Mountain Lane
Concord, NC 28025 Greensboro, NC 27455 Taylorsville, NC 28681
Phone: [phone] Phone: [phone] Phone [phone]

May 20, 2004
S&EC Project #: 7960.W1
Page 2 of 2
Written confirmation form NCDWQ was received on November 19, 2003, and a copy is
attached.
The site plan was developed to create the least amount of impacts possible. Roads were
aligned and angled in such a way as to avoid the stream channels and wetlands to the
maximum extent practicable. The proposed impacts were required in order to access all
portions of the site and connect to existing roads. In order to tie into the existing roads,
wetland and stream buffer impacts are unavoidable. Proposed impacts include wetland
impacts of 0.099 acres, intermittent channel impacts of 16 linear feet, and cumulative
riparian buffer impacts that total 0.8139 acres.
The USACE's current policy requires applicants to avoid and minimize wetland and
stream channel impacts to the maximum extent practicable and may require
compensatory mitigation for impacts that exceed 0.1 acres and any stream impacts.
Because the proposed site plan proposes no impacts to perennial/important streams and
impacts to wetlands that total less than 1/10 acre, we do not believe mitigation should be
required. However, if mitigation is required, the applicant proposes payment to the EEP.
Sincerely,
Sean Clark
Environmental Scientist/
Project Manager
Attachments:
Pre-construction (PCN) notification form
Agent Authorization Form
Site Location Map-USGS (Figure 1)
Site Location Map - Soil Survey (Figure 2)
Proposed Wetland Impact Maps
Data Forms
$200 check for 401-certification processing fee
Stormwater Management Plan
Office Use Only: f Fonn Vcrsion May 2002
"1 221.0
USACE Action ID No. DWQ No.
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
1. Processing
1. Check all of the approval(s) requested for this project:
N Section 404 Permit ® Riparian or Watershed Buffer Rules
? Section 10 Permit ? Isolated Wetland Permit from DWQ
N 401 Water Quality Certification
2. Nationwide, Regional or General Pen-nit Number(s) Requested: NWP 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: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ?
II. Applicant Information
1. Owner/Applicant Information
Name: MDC Homes
Mailing Address: 2501 Blue Ridge Road
Suite 150
Raleigh NC 27607
Telephone Number: [phone] 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: Sean Clark
Company Affiliation: Soil & Environmental Consultants, PA
Mailing Address: 11010 Raven Ridge Road
Raleigh. NC 27614
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: SClarkASandEC.com
Page 1 of 9
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Carramore Subdivision
2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A
3. Property Identification Number (Tax PIN): 074401365147, 074401357569, 074401369258,
074401466348,074401252951,074401268401
4. Location
County: _Wake County Nearest Town: Cary
Subdivision name (include phase/lot number): Carramore Subdivision
Directions to site (include road numbers, landmarks, etc.): The site is located immediately
west of Davis Drive (SR 1613) and approximately 2,200 feet north from the intersection of
Davis Drive and High House Road (SR 1615) in Carv NC
5. Site coordinates, if available (UTM or Lat/Long): 035° 47' 58.37" N 078° 51' 7.68" 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): +/- 65 Acres
7. Nearest body of water (stream/river/sound/ocean/lake): UT to Turkey Creek
8. River Basin: Neuse River
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/adminJmaps/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: The site is currently predominately in fallow pasture The
Page 2 of 9
J
lower areas along natural drainages are wooded. The site contains several drained ponds and
two existing ponds Surrounding properties are primarily residential or being used for
agriculture
10. Describe the overall project in detail, including the type of equipment to be used: The
project consists of the construction of a residential subdivision. This subdivision will require
the installation of utilities such as sewer, roadways electrical etc. typically associated with a
residential subdivision Heavy equipment associated with land clearing and construction will
be utilized.
11. Explain the purpose of the proposed work: This subdivision is being built to provide
housing to offset the needs of the growing population in this area. The proposed impacts are
required to provide access to all portions of the property.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
S&EC conducted a detailed wetland delineation and Neuse Riparian Buffer evaluation in June
2003 for the +/- 105-acre property then owned by the Edwards Family. A 65 acre portion of the
property has since been sold to MDC Homes (the applicant). Six old irrigation/farm ponds exist
on the 105-acre property originally evaluated by S&EC. Three of these ponds had been drained
prior to S&EC's field evaluation and prior to DWQ's site meeting. S&EC conducted a site
meeting with Ms Deborah Edwards of the NCDWQ on August 25, 2003 to review the
potentially subject features on property. Written confirmation form NCDWQ was received on
November 19, 2003, and a copy is attached
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 permits are known to be required at this time.
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 snap 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
Page 3 of 9
`r
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:_ Permanent impacts consist of
16 linear feet of intermittent channel and .0099 acres of wetlands due to road construction
(Impacts Al, A2, E3 and E4).
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**
(yes/no) Distance to
Nearest Stream
linear feet)
Type of Wetland***
Al (NWP 39) Permanent/Fill .0069 No +85 Bottomland Forest
A2 (NWP 39) Permanent/Fill .0004 No +95 Bottomland Forest
E3 (NWP 39) Permanent/Fill .0026 No 0 Headwater Linear

List cacti impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http://www.fema.gov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.) 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: +/- 0.5 acre
Total area of wetland impact proposed: .0099 Acres
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact
Site Number
indicate on ma)
Type of Impact* Length of
Impact
linear feet)
Stream Name** Average Width
of Stream
Before Impact Perennial or
Intermittent?
(please seci
E4 (NWP 39) Culvert/fill 16 UT to Turkey Creek +2' Intermittent

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www.uses.Qov. Several intemct sites also allow direct download and printing of USGS maps (e.g., www.topozone.com,
www.mapguest.com, etc.).
Page 4 of 9
Cumulative impacts (linear distance in feet) to all streams on site: 16 Linear Feet
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.) below:
Open Water Impact Area of Name of Waterbody Type of Waterbody
Site Number Type of Impact* Impact (if applicable) (lake, pond, estuary, sound,
(indicate on ma) (acres) 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.
5. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ? uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): N/A
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): N/A
Size of watershed draining to pond: N/A Expected pond surface area: N/A
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
The client requested a detailed delineation prior to site plan development in an effort to avoid
impacts where possible. The site plan was developed to create the least amount of impacts
possible Roads were aligned and angled in such way as to avoid the stream channels to the
maximum extent practicable. The proposed impacts were required in order to access all portions
of the site.
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.
Page 5 of 9
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/newet]ands/strmgide.htm1.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
Typically impacts to unimportant/intermittent streams do not require mitigation Because
proposed impacts have been minimized to the maximum extent practicable and only consist
of 16 linear feet of intermittent channel and less than 1/10 acre of wetland we do not believe
mitigation should be required. However if mitigation is required the applicant proposes
payment to the EEP.
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
Page 6 of 9
IX.
X.
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 ?
Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Yes ® No ? If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
B
Zone* Impact
(square feet) Multiplier Required
Mitigation
1 407 3 NA
2 902 1.5 NA
Total 1309 NA
Page 7 of 9
Cand D
Zone* Impact
(square feet) Multiplier Required
Mitigation
1 959 3 NA
2 864 1.5 NA
Total 1823 NA
F
Zone* Impact
(square feet) Multiplier Required
Mitigation
1 2138 3 NA
2 2869 1.5 NA
Total 5007 NA
cone 1 exrenas our Ju leer pcrpenaicutar 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.
Because the impacts resulting from the road crossing (Impact Area E) are below the threshold
required for mitigation (<1/3 acre, <150 linear feet) we do not believe mitigation should be
required. The impacts resulting from impacts BI and B2 are required in order to tie into the
existing sanitary sewer manhole located within Zone l(see attached Figure 2) The Zone 1
impact resulting from this sewer installation (Impact BO is not a perpendicular impact however
is less than 40 feet wide measuring from where it enters Zone 1 to where it exits The impacts
labeled C1, C2, D1, and D2 are perpendicular impacts.
XI. Stormwater (required by DWQ)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
The stormwater plan is attached to the application however the impervious surface are will be
less than 30%.
XII. Sewage Disposal (required by DWQ)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
The site will tie into an existing sanitary sewer (Town of Cary) adjacent to the property.
Page 8 of 9
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
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).
Ma
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Page 9 of 9
05/18/2004 14:06 9196761209 JEFFAKIN PAGE 02
U.7%J,0; LOUi I -J I* A
Soil & Environmental Consultants, P
11010 Raven Ridge Rosin • R.lalgb, North rnrolita 27614 # Rikmts: (919 - 846 54oi1 Fax: (919, 846 9461
, w? w.5 ux3EGcum
AGENT AUTHORIZATION FOICM
1 I All 131anks To Be Fill d ?- The Current La of
Name: M tto?1- ?A???, 111-G ?...._-----77-.?
Address; Z0I Los P]X, f IN S U -I _ ISQF-na, rJ C 22G_I-
Phone: 6bS- - --
P1;oJectName/Description: CC6?CCC•.MOCge^ ---- _?-
Date: 4e'0 -
The Depa,rtmelnt of the Anny
U5. Army Corps of Eiigineers, Wilmington District
P.O. Box 1690
Wil"ngton, NC 28402 II
?c;t?tilGr 3W?
f'sitzt; ---
Field Office: ---
Re: Wethuuls Related. Consulting and Permitting
To Whom It May Concern;
I, the current: Mope= owner, hereby designate and authorize Soil & Environmental Cowultants, PA to
act in my behalf as nay agent in the processing of permit applications, to furnish upon request
supplemental miormation in support of applicati=6, etc. from this day forward. The day of
This notification supersedes a:ny previous correspondence concerning the agent for this project.
NOTICE: This authorization, for liability and professional courtesy reasons, is valid only for
government officials to enter the property when accompanied by S&EC staff. You should call S&EC
to arrange a site meeting prior to visiting the site.
as Ay--o - ?[v1 pia, ?1 r -F' ?Db1-r
Print Property Owner's Name
cc: Mr. John Domey
NCDENR - DWQ
2321 Crabtree Boulevard
Raleigh, NC 27641
I'rvpezty r' Sign.ature
cc: Mr. Scan Clark
Soil & Environmental Consultants, PA
Le Grnenshom OfflcL 19c U- Qtflt.e;
Ch?rlottc O
ch jortc ib c' Suitr C 3817.E Uwndale Drive 622 Coon Mo=tntn Lanb
216 IM Court Grscncboco. NC 2.7A53 7aylersviua. Nc Mal
Concord. NC 2W25
Phone: [phone] Mow (335) 54()•8231 F'6ortc (92y) 635.3820
Fax: [phone] Fax: [phone] Frx: (828) 05-5820

\
350 326 ?.?
? ?? ' ?.._``
-
-L?-?-'-?--_tr
- .-_
l
-
V

a B Y !r
- - - r
j-1 - - - - B Y
?
1617 yap ?

I ? ? r 1?
) RF r? ?1 -?-,r_
? ?r _ ,5

lr f ( \ - - - 4 ?- - ?
! r

i ,
J

a

R
l I ?
CARY QUADRANGLE
NORTH CAROLINA
7.5-MINUTE SERIES (TOPOGRAPHIC)
I
ct
P Scale:
roje
#:7960 t^=2000 Figure 1- USGS Quad
o?
Soil & Environmental Consultants, PA
Project
Mgr.: SC Date:
6116103 Map
Edwards Tract
a - 11010 Raven Ridge Rd.- Raleigh, NC 27614
[phone] • [phone]
com
SandEC
Withers and Ravenel .
Web Page: www.
Cary, Wake Co., N.C.

-r .. ?RI Rf "1'•Xi .?J t-R T' ? f y?c {'
}c ?' Wsp,2
1l'?(.f .?,: ? ?Z ?7 ? ?•? LL ? ? 2 11? ??}'Vest.2 ?t t//' ' ? :i° ?....?' i 2 ?., _ ??..
v11 t=t m? 1. 0 f.i? f} y? ,<:` •.? __ r ?. ` Cp~
W
4 ?? t P CrC 4 st{ ?{ ?'i4 ?32? / W t ?{ NB2 F 7 I CtC2
e
• ai_ ---- i. p lr t? n 4' a. ` ?? ? ' ? }' Ws 62 WA
.ir_' ?y t F \ N ai r
. ` CrB2 t 4 1
./-
c ? I.rf?2 jrE g_: .Z k ? i' :^t?-+t , fl ,// CfB2
f
` '' ?° WS62 L
Z ?? p., .Y •t?{?'?: -F rft''?rpit`FF1 A-z t i E. ?,.:?• •?,+t. ?i x iiS r-? ;?•Cr62 C ?.? ?jµ I s Cf6 ?'{t, '' Cr 2 co '41 i L
?, ?.` t? ,?
?rB2 CrC ;+ r?? ?'??
CrC2 xar siry 1 } r t i r y r St m , sW { ,
u a ,?k ,}?. ??? * I II ` ?r hYa.?.* ? 91 i?- WsB? a '' 3 .? ?1 .' r •a?--_y ,r°
'?i.L
' {
B
•. I ..^.'trl!fE
"U., Sr `Y 1 ; , i<y',r•,- ??:a%..3`'
' Z ?r j?YYrr`` t-i• . •? T SS 7 -' ' }.i`
Cn
t ?« x e _ :fir / a _;, 4 , #a{ Ic tz 7lYt_<il
?V. Aft
16. A
'?l(C2 , t r a'rr Cr02. a? t44 `k r.. s 6 ??
' Y 'r,•+
a zN k r _
y? Fes} F t.v k` _ r
T
IR
3rx. fi . CrB? 7 t Rr s. :. "C[IID?.t 9+°- v. 1 {
c wa-?IrYr y . ?j 4?t? 7C? t' !'? CrC2 ?"??? r may: ?#
CrEj2?, ? \?v ,?,.. ?;,?.+`?yt•;.
CrC
er: F •a. _?? ? r .+ `? 1 ? S>,'{1?? ??. °o'r«•` ?i f'? `T s• ?.? ;__ C^ G
? ?* '??''4 ?,F' .f'. Cr6
t)
s, ^ w? Gr6 CrC? ` i JAS
T }?. yk ..¢7 d y a U CrC2
1 ?,` „ ?P a•s ?'t:, s.. a? `it7?;'eE.-?? 1..''.?ZF'
'l 9 ?c, 4 ,? yt? . ?'
?} 7 t \ Gr6 N Cruz
4 CrB2 yy? {
6rC2 .r •".. '1}/?-?ryti 1 ...r'? m ? W..t:l?rY t*_
to?; 1 "34fsF zt6?lw'r _f 1 '-mss. 9 t 1 t CrC
i fi ?ti e;l? ?': 4 atik ?Y' as a a h ? ` r ? •? S ^'`.E.` ti1'??-??'?' f
11 S ?.taf"'` a °§ 3 ?Lxoa.*LVy4y '4a `i'ci?'3-' C.Y6 GrC f. CrC2? tr' r AZYYr- 4,t ti
Sheets 45 and 46
Project scale:
#:7960 1"=1320'
Figure 2 Map Survey Soil & Environmental Consultants, PA
Project Date: 4
Mgr.: SC 6116!03 Edward T tact 11010 Raven Ridge Rd. Raleigh, NC 27614
Withers and Ravenel` ' [phone] • [phone]
Web Page: www.SandEC.com
Cary, Wake Co., N.C. 1
PROPOSED IMPACTS
Al WETLANDS
A2 LINEAR WETLANDS
302 SF
18 SF
.-?
,
i
0% ?

\ \ \ \

\ ,
r t t
i? ?!
;1 11
RED

2'Q5 CVt
k
,
\ y?\ ?
B ,3
-\ , 1
36 '
\ I 1
12,602 S?.
-o
M H 1

1?. \/\\ yi \\ \ \\\ `,'? CD. 31?
- O -'\
ro le"
'CPI
\11 1,9 F;' Of
LANDS1
/ . : L; ,, ,\•\ 1
? ? II r v 1 li „ ? ? ?, 1 1 1 \\ I / .'•:^Y??: 1 I? ? \ \ ? \ `? 6 i 9- 7
i i ' •' % , / 1 .1 ;:::.. 1 WETLANDS y`•? , I, Y ? ?.? !I
! ! i% I r, I y l ! / l l /; 1\ , t 1 1 1, ,
I I \ I I I I /l ' ? l 1 1 \,1
, , ! f( t 1 1 tl 1 1 ? 11 I 1 -? l \\ ?? 1 1 1 I V \I
0-1
!? ! ! 1 1 1. I 1
ISIL ! \ 1 1
1 I Ii 1II I ?, ?, ? ?, ;? + 1 , ate, ;,
! ; 1 1 TREk ,PRO CTION , I 1 11 1 , i +`, ``I
I i, ! I 11 1 ' i. ?` FML 1\ ; I i' I i 1 ly ` ?'
./ r ; i ?' ? 1 1 1 r f r ,,>: 1 11 I I I I I 1 1, y \•t
C rr J i !; , Ir 1 i1 , 11, 1, I 20 i i ?\ t y 1\ \V \
!` ? •' I ! ! 1 I ? :! : ? I, ?? 1 1 3 ONE 1 \ \ \ ? `y ? \
,',•? '? 1 ?2 1Q7 S F,- 1 III 1 I ti !3 1 ON?
f Y' \ r if i? r 1 j I I i ©N? ry0 i' r \S?\ ; \ `y 1 `y \\ \ 1 `y \ \\?
! /? r rii 1 I 11: ! fir` / I yl`\ 1 \\ j \ \\ `? \ A
, \/ ,' i t? r ? 1 ? ? r \11 \ I I \ \ \ \ t
I r ii i I i ! 111 \ I \ \ \ \ \ \
????\' ! I I I I III ? I ? ! \ I \ \ \ \ \
O ?! ! ', 11 I l l l f I I ! 1 114 \\ 1 \1 \ \ \\ \ \
GRAPHIC SCALE 1'-50'
LNote: See Overall Wetlands Impact Map for Area Location
N 25 0 25 50 75)
WITHERS & RAd E N E L FIGURE 1: AREA OF WETLANDS
li !
ENGINEERS 1 PLANNERS I SURVEYORS CARRAMORE SUBDIVISION WETIANDS ' I Mp !-A?+T
111 M4,K-n Drive C,,y, Nonh Carolina 27511 tel: [phone] tat: 913467-6008 www.withersnveneLcom (.ARY WAKE MINTY NORTH CAROLINA
n f----- 34" - - 1, 797 SF
If
501 SF PT =
- J- ? ? - ? ti -f •_ ? 'mot---
/
r 1 C
?
1 1 \ '1 I
O F-
PROPOSED IMPACTS 12
049 SF N ?
bi

131 ZONE 1 NRB IMPACT 407 SF ,
\ \` ; .
62 ZONE 2 NRB IMPACT 902 SF l . •- = - - -•_ `
I_
LEVEL SPREADER CALCULATIONS on
L-Q,x13If/cfs t\ `\ (?` p°? \ \

L-3.98cfs x 13
c\•\ `\
S `\ \`,
7
•? 4
?,
\ \ st
\
I -

JB`\11

12,`46 ;S ?N ?X I I \
\ \,
?'? \ r y\ \6 I i 5 -
1
t2 48'2\ SFI\` 4S9`,SF -- -
MH 10'1 `\ I I \ Ln -?;-
50.00k 1j L-
B2
\\ $0 R 4' BOX \ FES 10 TION `BAST
1 \1 \ \ •:;? : RED \ ? t \ _
\ \ 1 ?\ ` \\ 7 PROPOSED 8--- -? --- ---=._- t
'EXIST. MH =?--- - ?; /
/ SANITARY SEWER
15, ,, j 14
GRAPHIC SCALE V-50'
N
Note: See Overact Wetlands Impact Yop For Area Location 25 0 25 50 75
W I TH E R S & RAV E N E L FIGURE 2: AREA OF WETLANDS
ENGINEERS I PLANNERS 1 SURVEYORS CARRAMORE SUBDIVISION WETLANDS IMPACT
I I I M,cK-.. Drive Cary, North Carolina 27511 1e1: 919-469-3340 lac 919-4674,008 ??,. witl,ersnvenel.?an CARP WAKE COUNTY NORTH CAROLINA
?f6
PROPOSED IMPACTS ?y,
C1 ZONE 1 NRB IMPACT 616 SF
C2 ZONE 2 NRB IMPACT 498 SF
D1 ZONE 1 NRB IMPACT 343 SF
1
D2 ZONE 2 NRB IMPACT 366 SF ' ??
\ :_ - _ ;• Lp
I _wk.
'

T?,6
9 -
LEVEL SPREADER CALCULATIONS
L - Q0x 13 If/ds
1
L-0.34cfs x 13
\ `':: WETLANDS ` y
L-4'
\]
/
1
USE 15 MIN.
\
`
,
'
t
•
i 11
1 I
1 ?
r , r rl , +
i ?? ?\ '1?i ? ` !
'1 1. ?'?? , ;?
I
`
'
i ? I x 'tijr f \ j\.
1. J 1 + 1
I I II
1 ? f ?
'
i J , , I 1 ? i , 1 1 I 1+ f l l 1 \ \\ 1 1 ,
+ 1 30 1
'
;PONE
' "-?
+ ' I i20•
'
: 11
j ,
;
ONE -
,
1
;
,

\. \ l i ? i it I + I I I! I ? I ? I 1 •1 \ ? ??` ? ?

1 G9 SF
TE;NTION
J
BAST 11
'
VIII ST 4 IN =34.5
S
TOP Opt _ ! ! ! ! +? ???`
ri ? '
T014 PI1? -'350
\
00
\
.

r
is L
,, I f / i t 1 i S READ \
1
\
;ID2 D1
o _ )) I 1 1 ; ; I- 1
8 20, L C` ; \
r^?,-
f:
1
.r i
? r--
r•--•-?
-' ?
??
I
'
..R.
!
?
?- ! ,.--.
'-
.?..s?
-+t !"----?a 1 r-? r
c.:....i ?.t k?..?J
_r a ._ I I
r
I
' 3
43
I
.
GRAPHIC SCALE 1'50'
Note: See Overall Wetlands Impact Map for Area Location N 25 0 25 50 75
WITHERS & RAVENEL
ENGINEERS I PLANNERS I SURVEYORS
111 M.K-.. Drive Cary, N.nh C,,.I,n4 27511 tel: [phone] lax: 919-4676008 www.wiUierunvrneLcom
FIGURE 3. AREA OF WETLANDS
CARRAMORE SUBDIVISION WETLANDS IMPACT
CARY WAKF CnUNTY NORTH CAROLINA
PROPOSED IMPACTS
E1 ZONE 1 NRB IMPACT
E2 ZONE 2 NRB IMPACT 2,138 SF
869 SF
2
E3 LINEAR WETLANDS 112 SF
/
\
J ?
'
?
LF ? `
'?
''
'
?
'
E4 CHANNEL IMPACT 'r
, ,
16 /.t)
•? I
,•
oo ,
/
1
2;857' S
,

ON 310• r' ; '1 ?p' % 1 ' rt !- I r/ i" / ,?% ?•
ZONE\
! \
! 1 20'
1
1 r}?Z ON
O?
!
/
i ? i .i •'?' ?
?

I
E=S DO/,i
o 1 `, 4 J'
1
r-
r t

\ .1
\ \ \ \ •\ \ \ /yam ,
/}yam./

'?
1

LA
\\ \`\ r
3
r
0)-j/
1' 1 1 t, \\ \? \\ ! /i. (OE.I ' /I• II

?'? \\\ \1 `, `\ \\\ '`\ 1V\ETLANDS
A
\ \ `
\ \ 1 1 \ \ \ ?? ! t J , ,' A
1 ,

N\F

7-;
GRAPHIC SCALE 1'-50•
-
N
Note: See Overall Wetlands Impact Map for Area Location 25 0 25 50 75
WI'T'HERS & RAVENEL
ENGINEERS I PLANNERS I SURVEYORS
I I I M.,K,- Drive Cary, North Carolina 27511 tel: [phone] (a.: 919-467-WOO www.w iihersnvrneLcom
FIGURE 4: AREA OF WETLANDS
CARRAMORE SUBDIVISION WETLANDS'' IMPACT
reaY WAKE rnt lNTY NnRTH CARn11NA
S [DRI
--
Till
i i '
'l \... /.11
I ,
U_j
O ._. __a 1
10
-71
t.,l
7 W,
1? lI IT
\ 1 A a I\, a a
I 1 .. ?
\? II ,?1 L, ? ='I?' • f ii (•..\ ?/ ? `???'\ \ ``•J __.._ ' "?- 1 ,, I ` \ \?',; I ?? ice"; T ?'hl t,ll .1 O ? ? ? ?3,?h
QI`?\,,(, 111 1 ,. \ 1 \ \ \ ?`_-_ ?`^., \ \ \ r I I I 1 1 ,
%
m Fi, two ?r_ \\ \\( \ w- \ \ ?;" / / i ?' III 11`2 I! ?`i=I' w4
\41,
1 _
•'v. •.f..?•., ?r•I•?y T•f 22\2.222\`, ?? `? \ J?`j\\ \\ \\\\\\\\
'fi't •,T• ?• \?? \\ \ \\ \ \ .,\ \ \` ?1 \ ?r-?'c?4 rnn
1\`? ? 111 \ .. \ \ ,7 .. li -'• \ \
1 \ 11 \\ \\ `\ 1
L?Aj
to'
a1
4
0
W
? o O ? N
0 i •.. j
N 1-
??Y' M1 r j
NS RDAp
?:•?T'•"??\' L7? ?? S-?E?E GRAPHIC SCALE 1'200'
1 .• . ../' O, 117 G
V 300 0 100 200 300,
-WITHERS & RAVF.NEL
ENGINEERS I PLANNERS I SURVEYORS
1 fl MacNenan Drive Cary, Nonh Carolina 27511 lei: 919-469-7140 fax: [phone] -wilhervavenel.com
CARRAMORE SUBDIVISION OVERALL WETLANDS IMPACT
ARY WAKE COUNTY NORTH CAROL11
f 0.
Wetland Delineation Performed By: Soil & Environmental Consultants, PA
11010 Raven Ridge Road
Raleigh, North Carolina 27614
[phone]
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Edwards Tract on Davis Drive / S&EC Project # 7960 Date: 3/15/04
Applicant/Owner: Withers and Ravenel County: Wake
Investigator: Will Beutow, Sean Clark State: N.C.
Do Normal Circumstances exist on the site? X Yes No Community ID: Upland Forest
Is the site significantly disturbed (Atypical Situation)? Yes X No Transect ID:
50' up from WL Flag
Is the area a potential Problem Area? Yes X No Plot ID: 307A
1
(If needed, explain on reverse.) 1 --1
I r^nTATl11/.l
?LVL?l111V •
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Acerrubrum Tree FAC 9.
2. Mitchella reptans Vine FACU 10.
3. Liquidambar styracillua Tree FAC+ 11.
4. Oxydendrum arboreum Sapling NI 12.
5. Quercas alba Tree FACU 13.
6. Nyssa sylavtica Tree FAC 14.
7. Quercas rubra Tree FACU 15.
8. Vitis rotundafolia Vine FAC 16.
Percent of Dominant Species that are OBL, FACW, or FAC
(excluding FAC-): 57%
Remarks: The vegetation meets the criteria (?50% OBL, FACW or FAC) for hydrophytic vegetation.
n 1 U/\VLVV 1
_ Recorded Data (Describe in Remarks):
_ Stream, Lake or Tide Gauge
_ Aerial Photographs
_ Other
X No Recorded Data Available
Wetland Hydrology Indicators:
Primary Indicators:
Inundated
_ Saturated in Upper 12 Inches
_ Sediment Deposits
Drainage Patterns in Wetlands
Field Observations: Secondary Indicators (2 or more required):
Oxidized Root Channels in Upper 12 Inches
Depth of Surface Water: 0 (in.) _
_ Water-Stained Leaves
Local Soil Survey Data
Depth to Free Water in Pit: >14 (in.) _
FAC-Neutral Test
_ Other (Explain in Remarks)
Depth to Saturated Soil: >14 (in.)
Remarks: There were insufficient field indicators present to indicate wetland hydrology.
Wetland Delineation Performed By: Soil & Environmental Consultants, PA
11010 Raven Ridge Road
Raleigh, North Carolina 27614
[phone]
.\ I
Project/Site: Edwards Tract on Davis Drive / S&EC Project # 7960 Plot ID: 50' up from WL Flag 307A
SOILS
Map Unit Name Drainage Class: Poorl y
(Series and Phase): Creedmoor Field Observations
Taxonomy (Subgroup): Aquic hapludult Confirm Mapped Type? Yes No
Profile Description:
Depth Matrix Color Mottle Color Mottle Texture, Concretions,
inches Horizon (Munsell Moist) (Munsell Moist) Abundance/Contrast Structure, etc.
0-4 A 10YR 2/1 Sand loam
4-8 A2 10YR 5/2 Sand loam
8-14 A3 10YR 5/6 Sand 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: The soil does not meet the criteria for a hydric soil.
WETLANDS DETERMINATION
Hydrophytic Vegetation Present? X Yes No Is this sampling point within a wetland?
Wetland Hydrology Present? Yes X No Yes X No
Hydric Soils Present? Yes X No
Remarks: Due to a lack of wetland hydrology and a lack of hydric soil, this area is not a jurisdictional wetland.
IL-- if
I
Wetland Delineation Performed By: Soil & Environmental Consultants, PA
11010 Raven Ridge Road
Raleigh, North Carolina 27614
[phone]
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Edwards Tract on Davis Drive / SBEC Project # 7960 Date: 3/15/04
Applicant/Owner: Withers and Ravenel County: Wake
Investigator: Will Beutow, Sean Clark State: N.C.
Do Normal Circumstances exist on the site? X Yes No Community ID: Emergent Wetland
Is the site significantly disturbed (Atypical Situation)? Yes X No Transect ID:
Is the area a potential Problem Area? Yes X No Plot ID: @ WL Flag 307A
(If needed, explain on reverse.)
\lGr_FTATInm
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Acerrubrum Sapl. FAC 9.
2. Juncus effuses Herb. FACW 10.
3. Liquidambarstyraciflua Sapling FAC+ 11.
4. Lycopsus virginicus Herb. OBL 12.
5. Eulalia viminea Herb. FAC+ 13.
6. Murdania keisak Herb. OBL 14.
7. Quercas niagra Sapling FAC 15.
8. 16.
Percent of Dominant Species that are OBL, FACW, or FAC
(excluding FAC-): 100%
Remarks: The vegetation meets the criteria (?50% OBL, FACW or FAC) for hydrophytic vegetation.
uvnRnl nrv
_ Recorded Data (Describe in Remarks):
Stream, Lake or Tide Gauge
_ Aerial Photographs
_ Other
X No Recorded Data Available Wetland Hydrology Indicators:
Primary Indicators:
Inundated
X Saturated in Upper 12 Inches
_ Sediment Deposits
X Drainage Patterns in Wetlands
Field Observations: Secondary Indicators (2 or more required):
_ Oxidized Root Channels in Upper 12 Inches
Depth of Surface Water: 0 (in.) Water-Stained Leaves
_ Local Soil Survey Data
Depth to Free Water in Pit: 1 (in.) - FAC-Neutral Test
_ Other (Explain in Remarks)
Depth to Saturated Soil: 0 (in.)
Remarks: There were sufficient field indicators present to indicate wetland hydrology.
Wetland Delineation Performed By: Soil & Environmental Consultants, PA
11010 Raven Ridge Road
Raleigh, North Carolina 27614
[phone]
Project/Site: Edwards Tract on Davis Drive / S&EC Project # 7960 Plot ID: @ WL Flag 307A
SOILS
Map Unit Name Drainage Class: Poorl y
(Series and Phase): Worsham Field Observations
Taxonomy (Subgroup): Typic endoaquult Confirm Mapped Type? Yes No
Profile Description:
Depth Matrix Color Mottle Color Mottle Texture, Concretions,
inches Horizon (Munsell Moist) (Munsell Moist) Abundance/Contrast Structure, etc.
0-6 A 2.5YR 411 Silty clay loam
6-12 B 2.5YR 5/1 10YR 5/6 Few fine distinct Silty 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 X Listed on Local Hydric Soils List
X Reducing Conditions X Listed on National Hydric Soils List
X Gleyed or Low-Chroma Colors Other (Explain in Remarks)
Remarks: The soil meets the criteria for a hydric soil.
IL-
WETLANDS DETERMINATION
Hydrophytic Vegetation Present? X Yes No Is this sampling point within a wetland?
Wetland Hydrology Present? X Yes No X Yes No
Hydric Soils Present? X Yes No
Remarks: This area is a jurisdictional wetland.
IL- ----Jl
1 h ,
State of North Carolina
Department of Environment
and Natural Resources
Raleigh Regional Office
Michael F. Easley, Governor
William G. (Bill) Ross, Secretary
Division of Water Quality
November 11, 2003
Sean Clark
Soil & Environmental Consultants, Inc.
11010 Raven Ridge Road
Raleigh, NC 27614
© ° y._
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: Neuse River Basin Buffer Rules
NBRRO 03-241
Edwards Tract
S&EC #03-7960
Cary, Wake County, NC
Dear Mr. Clark:
This letter will serve as confirmation of the buffer determination made by S&EC at the subject
property referenced by the Raleigh Regional Office as NBRRO 03-241.
On August 25, 2003, I conducted a site visit of features A, B, C, D, 1, 2, 3, 4, 5 and 6 involved
in the above referenced project as identified on the attached figures 1 and 2. It was determined that the
features shown on the Wake County Soil Survey and on the USGS Cary, NC Quad map could potentially
be subject to protection under the Neuse River Basin: Nutrient Sensitive Waters Management Strategy;
Protection and Maintenance of Existing Riparian Areas, Administrative Code T15A: 0213.0233 (NCAC
.0233). Features A-D are streams, of those, feature B is not subject. Features A, C and D are all subject
and their start points are flag #444, flag # 269 and flag #209, consecutively. Features 1-6 are ponds, of
those, features 2, 4, 5 and 6 are all not subject. Features 1 and 3 are subject
This letter only addresses the applicability of the Neuse Buffer Rules. For information relevant
to 401 Water Quality Certifications, wetlands and other impacts to "waters of the state", please contact
the Central Office at 733-1786. (Note: if a 401 Water Quality Certification is needed, please be reminded
not to begin your project until the certification has been received.) Thank you for your attention to this
matter and if this office can be of any assistance or if you have additional questions, please do not hesitate
to contact us.
Sincerely,
Deborah Edwards
Environmental Specialist I
cc: John Dorney/DWQ
Wake County
1628 Mail Service Center, Raleigh, NC 27699-1628 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post-consumer paper
4 u r
State of North Carolina
Department of Environment
and Natural Resources
Raleigh Regional Office
Michael F. Easley, Governor
William G. (Bill) Ross, Secretary
Division of Water Quality
November 11, 2003
Sean Clark
Soil & Environmental Consultants, Inc.
11010 Raven Ridge Road
Raleigh, NC 27614
Subject: Neuse River Basin Buffer Rules
NBRRO 03-241
Edwards Tract
S&EC #03-7960
Cary, Wake County, NC
Dear Mr. Clark:
11r , i1 ?1J

This letter will serve as confirmation of the buffer determination made by S&EC at the subject
property referenced by the Raleigh Regional Office as NBRRO 03-241.
On August 25, 2003, I conducted a site visit of features A, B, C, D, 1, 2, 3, 4, 5 and 6 involved
in the above referenced project as identified on the attached figures 1 and 2. It was determined that the
features shown on die Wake County Soil Survey and on the USGS Cary, NC Quad map could potentially
be subject to protection under the Neuse River Basin: Nutrient Sensitive Waters Management Strategy;
Protection and Maintenance of Existing Riparian Areas, Administrative Code T15A: 0213.0233 (NCAC
.0233). Features A-D are streams, of those, feature B is not subject. Features A, C and D are all subject
and their start points are flag #444, flag # 269 and flag #209, consecutively. Features 1-6 are ponds, of
those, features 2, 4, 5 and 6 are all not subject. Features 1 and 3 are subject
This letter only addresses the applicability of the Neuse Buffer Rules. For information relevant
to 401 Water Quality Certifications, wetlands and other impacts to "waters of the state", please contact
die Central Office at 733-1786. (Note: if a 401 Water Quality Certification is needed, please be reminded
not to begin your project until the certification has been received.) Thank you for your attention to this
matter and if this office can be of any assistance or if you have additional questions, please do not hesitate
to contact us.
Sincerely,
A_?Dt p
Deborah Edwards
Environmental Specialist I
cc: John Dorney/DWQ
Wake County
N -,=[DM=Nffb
C h M
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
1628 Mail Service Center, Raleigh, NC 27699-1628 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post-consumer paper
y ,,
i
O
r
I7?
Y
O
O
Ln
W
r
o
O
LW
O
O
O
C3
r
Mj
r
X_
.O

mao X
0 -4
m (]

F-?

xl N 7.i
W w C) O
F-' N
(D F' U

0' Fl- (D
rro
z
n
(D O
Fh ¢
W

Q
r
t
rn
, c
O • (D `..
kt, n

Q
0

r• O "
rt N

O
In D
N m
0
0
D
V). 's
N C
O z
0
O
O
U)
O
r
m
z
co
o
JM0
D°Z
°°5<m
=Z-A
.. O E5 1-
O
?NG)n
rnm0
0) §? czn
vC
V a
U)
w o vi
m-i;i
rn 3 C -
o_ZN•IN
u'OnZ
O
?c?W
(D < pq
0
m
m
n
A
Z
O

N?
rn CF)
O FA
N

H
w ?
C)
co
? x
O .
in n
w
O
C)
H H
p '`dC
C
0
P.
N
C) 0
? n
0
ro ?
m
H M
•?1 (D
F,• H
Ct ?
b
ro
d
m
O
il? L)i
O Fa N
o w o
C,
C) n o
o m a.
n
d O_
C r
N" R°
o z
?l _C
O 31
rn O
rt m
(D z
a
p r
o
z
rl U)
C
^r•I
Z
-I
N
D
? x
(D (D
n n
o x x
p n 8 Gg
O rt tY
C
O
O rt (D

ro N
yr K sl O1
N N
o o r ?7
O O O rn FA
J
CD p o r?
C) n 0 0
Triage Check List
Date: 2?4 Project Name:
DWQ#: 041
County: 4?z -e_
TO: ? ARO Mike Parker ? WaRO Tom Steffens
? FRO Ken Averitte ? WiRO Noelle Lutheran
? MRO Alan Johnson ? WSRO Daryl Lamb
RRO teve Mitchell
From: C2:22 I/ Telephone : (919)
The file attached is being forwarded to your for your evaluation.
Please call if you need assistance.
? Stream length impacted
? Stream determination
Wetland determination and distance to blue-line surface waters on USFW topo maps
Minimization/avoidance issues
Buffer Rules (Neuse, Tar-Pamlico, Catawba, Randleman)
? Pond fill
? Mitigation Ratios
? Ditching
? Are the stream and or wetland mitigation sites available and viable?
? Check drawings for accuracy
? Is .the application consistent with pre-application meetings?
? Cumulative impact concern
Comments:
?
-v7 12
i
:J J .:
WETLANDS 1401 GROUP
AY ., 2004
WATER QUALITY SECTION
WITHERS' RAVEN EL
CARRAMORE SUBDIVISION
PHASE
STORMWATER MANAGEMENT PLAN
Cary, North Carolina
Prepared For:
MDC HOMES
2501 Blue Ridge Rd, Suite 150
Raleigh, NC 27607
Prepared By:
WITHERS & RAVENEL, INC
111 MacKenan Drive
Cary, North Carolina 27511
February 2004
W&R Project No. 203300
. , CAR0
M .?
SEAL
7-W 28324 a r-
Z/2/0 f
Katrina M. McDonald, P.E.
CARRAMORE PUD PHASE I
STORMWATER MANAGEMENT PLAN
CARY, NORTH CAROLINA
INTRODUCTION
Carramore Planned Unit Development (PUD) Phase I is a ±19.8-acre proposed residential
subdivision located in Cary, North Carolina, to the west of Davis Drive between two existing
subdivisions - Riggsbee Farm to the south and Preston Village to the north. During the PUD
approval process, a great deal of time and attention was paid to stormwater management issues in
order to minimize the impact of the proposed Carramore PUD on the existing downstream
residents in Riggsbee Farm and Preston Village. This report covers all four proposed stormwater
best management practices (BMPs) as agreed upon during the PUD approval process, even though
two of the BMPs are outside the limits of Phase I.
The purpose of this study is to document pre- and post-development peak stormwater discharges for
the 1-year, 10-year, 25-year and 100-year storm events in accordance with the preliminary
stormwater management work submitted during the PUD process. The goal is to provide retention
and detention structures adequate to maintain a discharge less than or equal to the pre-
development peak discharges after the site has been developed for all four design storms listed
above. The peak discharge numbers are slightly different than what was submitted in the PUD
approval process due to refined drainage areas based on the proposed road grades and storm
drainage system design as shown on the construction drawings. In addition, the proposed
stormwater best management practices (BMPs) are designed to meet nitrogen reduction
requirements.
METHODOLOGY
The stormwater study was conducted using the natural drainage features as depicted by the Wake
County aerial topographic information (2-ft contours), field survey data and proposed development
within the drainage areas. Carramore PUD was divided up into three main drainage area discharge
points, based primarily on natural drainage patterns, to evaluate pre- and post-development peak
discharge rates. In addition to the three main discharge points of concern, there are several areas of
sheet flow off the site that are lumped together into two other/untreated areas for the purpose of the
peak attenuation analysis: Other Area North (sheet flow towards Preston Village) and Other Area
South (sheet flow towards Riggsbee Farm). The individual peak discharge rates from the three
evaluation points and two other areas were summed to get total pre- and post-development peak
discharge rates for the design storms studied. Drainage area delineations for pre- and post-
development conditions are shown on the attached Sheets D-1 and D-2, respectively.
There are three wet retention ponds and one dry detention pond proposed for the site to meet the
peak attenuation requirements: Pond #1 West (wet pond), Pond #1 East (dry pond), Pond #2 (wet
pond), and Pond #3 (wet pond). The wet ponds also provide reductions of 85% Total Suspended
Solids (TSS) and 25% Total Nitrogen (TN). The proposed BMPs are depicted on the attached Sheet
D-2, as well as on Sheets S1 and S2 of the construction drawings.
The scope of work included the following analyses:
Hydrology
? Simulation of the 1-year, 10-year, 25-year and 100-year rainfall events for the Cary area
? Formulation of the 1-year, 10-year, 25-year and 100-year flood hydrographs for the pre-
and post-development drainage areas
Carramore PUD - Phase I W&R Project 203300
Stormwater Management Plan 1 February 2004
CARRAMORE PUD PHASE I
STORMWATER MANAGEMENT PLAN
CARY, NORTH CAROLINA
Hydraulic
1 o Routing the 1-year, 10-year, 25-year and 100-year flood hydrographs for post
development runoff through the four proposed stormwater BMPs
The results of the hydrology calculations are used in the hydraulic analyses. The hydraulic design
requires the development of stage-storage and stage-discharge functions for the four ponds. The
rainfall/runoff hydrographs, stage-storage and stage-discharge functions have been compiled to
create a routing computer simulation model using Haestad Methods PondPack v9.0 software. This
PondPack model was then used to assess the impact of the peak discharges for the design rainfall
events. The PondPack modeling results are provided as appendices to this report.
HYDROLOGY
The Rational Method was used to determine peak discharge rates for the 1-year, t0-year, 25-year and
100-year design storm events for the Cary, North Carolina area and the Modified Rational Method
was used to size the detention storage for the two wet ponds due to the small drainage areas (<20
acres). The Modified Rational Method is an extension of the rational method for rainfalls with
durations greater than the time of concentration. The method was modified so that the concepts of
the rational method (peak discharge) could be used to develop hydrographs for storage routing.
The Modified Rational Method within PondPack calculates the storage volume for hydrographs of
rainfalls of various durations to determine the critical duration for the design storm as the one
requiring the greatest detention storage volume. This critical duration is used to calculate the
discharge rate and volume of water that is routed through the pond structure. The hydrograph
developed maintains the calculated volume and adjusts the peak discharge rate accordingly. Thus,
the peak discharge for the Modified Rational Method is less than the calculated Rational Method.
The rainfall data used in this design was taken from the Intensity-Duration-Frequency Table for the
Raleigh area published in the City of Raleigh Stormwater Management Design Manual. The Kirpich
(TN) method was used to compute pre-development time of concentrations for the drainage areas.
The post-development time of concentration was set at 5 minutes for all drainage areas to account
for the piped drainage systems and small areas of sheet flow.

[I

n
H
0
HYDRAULICS
Computer simulated reservoir routing of the 1-year, 10-year, 25-year and 100-year design storms
utilized stage-storage and stage-discharge functions. Stage-storage functions were derived from
topographic information and proposed contours for the four stormwater BMPs. A non-linear
regression relation for surface area versus elevation was derived for the four BMPs. This relation
estimates the incremental volume of the basin to the stage or elevation of the basin. Stage-discharge
functions were developed to size the outlet structures for the four ponds to meet the peak
attenuation and water quality design requirements.
CONCLUSIONS
Based on the routing study, the post development peak discharge from the entire site is less than
the pre-development peak for all the design storms evaluated in this study. Tables 1 and 2 below
summarize the peak attenuation results for the entire site. Tables 3, 4 and 5 below evaluate just the
drainage areas of concern during the PUD process - Areas 1, 2 and 3 - for compliance with the
Carramore Rezoning Riggsbee Farm Agreement and the Carramore Rezoning Preston Village
Carramore PUD - Phase I w&R Project 203300
Storm,vater Management Plan 2 February 2004
CARRAMORE PUD PHASE 1
STORMWATER MANAGEMENT PLAN
CARY, NORTH CAROLINA
Agreement. These agreements contained a maximum proposed outflow from the drainage areas for
the 100-year design storm. Tables 3, 4 and 5 incorporate peak discharge rates from drainage areas
to the three existing downstream storm drainage systems that are not part of the Carramore PUD, in
accordance with the stormwater analyses performed for the PUD approval process.
Table 1. Pre-development Peak Discharge Rate Summary (On-site Area Only)
Location Total Area
(acres) 1-yr Qpeak
(cfs) 10-year Qpeak
(cfs) 25-year Qpeak
(cfs) 100-yr Qpeak
(cfs)
Drainage Area #1 27.1 29.6 42.5 48.4 57.8
Drainage Area #2 3.8 4.3 6.1 6.9 8.2
Other Area South 8.4 9.5 13.5 15.3 18.1
Drainage Area #3 2.7 3.1 4.3 4.9 5.8
Other Area North 6.5 7.4 10.4 11.8 14.0
TOTALS 48.50* 53.9 76.8 87.3 103.9
Table 2. Post Development Peak Discharge Rate Summary (On-site Area Only)
Location Total Area
(acres) 1-yr Qpeak
(cfs) 10-year Qpeak
(cfs) 25-year Qpeak
(cfs) 100-yr Qpeak
(cfs)
Pond #1 West Out 17.1 3.4 9.7 11.7 15.5
Pond #1 East Out 12.8 3.2 4.0 4.3 9.2
Overland Flow 3.15 5.6 8.0 9.1 10.8
Area 1 Sub-total 33.05 12.2 21.3 24.7 35.1
Area/Pond #2 3.0 0.03 0.03 0.03 2.4
Other Area South 3.0 7.3 10.4 11.8 14.0
Area/Pond #3 2.5 0.02 0.02 0.02 0.02
Other Area North 6.0 12.0 17.0 19.3 22.9
TOTALS 47.55* 31.6 48.8 55.9 74.4
*The difference between pre-development and post development drainage areas (0.95 acres) was diverted to
the existing pond by the proposed roads
Carramore PUD - Phase I W&R Project 203300
Stormwater Management Plan 3 February 2004
CARRAMORE PUD PHASE I
STORMWATER MANAGEMENT PLAN
CARY, NORTH CAROLINA
Table 3. Drainage Area #1 - Peak Discharge Evaluation to Downstream Pipe System
1-yr Qpeak
(cfs) 10-year Qpeak
(cfs) 25-year Qpeak
(cfs) 100-yr Qpeak
(cfs)
Original Design' 55.1 78.0 88.5 105.0
Existing Conditions' 29.6 42.5 48.4 57.8
Pond #1 West Outflow 3.4 9.7 11.7 15.5
Pond #1 East Outflow 3.2 4.0 4.3 9.2
Overland Flow 5.6 8.0 9.1 10.8
Total Proposed Outflow 12.2 21.7 25.1 35.5
Maximum Allowed in
Riggsbee Farm Agreement
f -,i„ rtt `. _
k a: 1 ' _ 40.0

' Original Design Assumptions: 27.0 acres; 5 minute Tc; C a 0.40
2 Existing Conditions Assumptions: Same as pre-development for Drainage Area #1 in Table 1
Table 4. Drainage Area #2 - Peak Discharge Evaluation to Downstream Pipe System
1-yr Qpeak
(cfs) 10-year Qpeak
(cfs) 25-year Qpeak
(cfs) 100-yr Qpeak
(cfs)
Original Design' 20.0 28.3 32.1 38.1
Existing Conditions4 13.9 19.7 22.4 26.5
Pond #2 Outflow 0.03 0.03 0.03 2.4
Overland Flows 10.7 15.1 17.1 20.3
Total Proposed Outflow 10.73 15.13 17.13 22.7
Maximum Allowed in

Riggsbee Farm Agreement
i f 30.0

' Original Design Assumptions: 9.8 acres; 5 minute Tc; C - 0.40
4 Existing Conditions Assumptions: 9.1 acres (3.2 ac Riggsbee Farm; 5.9 ac Carramore); 5 minute Tc; Cc - 0.30
s Overland Flow Assumptions: 4.65 acres to existing FES (3.2 ac Riggsbee; 1.45 ac Carramore); 5 minute Tc, C a 0.45
Carramore PUD - Phase I W&R Project 203300
Stormwater Management Plan 4 February 2004
CARRAMORE PUD PHASE I
STORMWATER MANAGEMENT PLAN
CARY, NORTH CAROLINA
Table 5. Drainage Area #3 - Peak Discharge Evaluation to Downstream Pipe System
1-yr Qpeak
(cfs) 10-year Qpeak
(cfs) 25-year Qpeak
(cfs) 100-yr Qpeak
(cfs)
Original Design' 10.5 14.9 16.9 20.1
Existing Conditions' 6.1 8.7 9.9 11.7
Pond #3 Outflow 0.02 0.02 0.02 0.02
Overland Flow' 3.7 5.2 5.9 7.0
Total Proposed Outflow 3.72 5.22 5.92 7.02
Maximum Allowed in Preston
Village Agreement
_ $,
. ' 15.0

6 Original Design Assumptions: 4.13 acres; 5 minute Tc; C - 0.50
' Existing Conditions Assumptions: 4.3 acres (1.4 ac Preston Village; 2.9 ac Carramore); 5 minute Tc; Cc e 0.28
e Overland Flow Assumptions: 1.8 acres to existing FES (1.4 ac Preston Village; 0.4 ac Carramore); 5 min. Tc, C = 0.4
In addition to peak attenuation, the three proposed wet ponds are designed to provide 85% TSS
removal and 25% TN reduction for their respective drainage areas. The spreadsheets provided in
an appendix to this report demonstrate that the three wet ponds are sized and designed in
accordance with the N.C. Department of Environment and Natural Resources, Division of Water
Quality Stormwater Best Management Practices Manual. The overall estimated total nitrogen (TN)
loading schedule for Carramore PUD is also provided in an appendix to this report. The nitrogen
calculations demonstrate that the estimated developed TN loading rated for the entire PUD is 3.3
Ibs/adyear, which means there is no buy-down required for any of the PUD parcels.
Carramore PUD - Phase 1 W&R Project 203300
Stormwater Management Plan 5 February 2004
1

T ° °
8 ? R
m
s °
n
D
D
O
Drn
V '
m
0
V I
O
z
D
Z
D -°
C) mm
r 7l '
O
m m
D 0
o -a
r-
2 m z
?
DI
0
Z
- G
m
o z
3A?
E ? N
E ° 9 Y.
T n z
A -? m
- >
? Z A
- j N
3 ? -
' S M
D
A
m C`
--om
A Z
N
? r

---------- - -------
-_ _-N ' ?, '? `?`\ `? r \? \ \ \-1 \\ \\\ 1 1'11'1, ;' ` 1
`\ ?`/'\?? ` 11`\11, 11,
11`
-`` ,?\\ \ '/?r,`` ?` ?\ \\ `,` \`\I `II 11 I 1 \ 1,1 j11 1 1` --_--____-__
r ,' ? ``.,?J `?,` \\111\ , ;111 II Ili,/'?1\I\II
o \ 4
1 ? `
1 1 ?. ` ? ? ` `1 11 ; 1 1 11
\ I C 11 `,,``\ `,,`; `,` ?\\ ?\ ``\I `, 11 ; 1 1 1 I -'? ?{? ,? \1`\,`1;11?\I L -------- --_--___.
Z `??' 1111``\1\\l. R.
X\X
?
?
(_ -_ ?,,`` ?\1?111? ?`\1`,111\\\``?`\`III111`,1\11`11`,`,,?J `'?_ .,`-_?, .. -•.?:.:. • 1?. .?:. .a .?, ...Y •, 1
?f N __ ``?` e-? \? \ 11 \ \\11\1`111 '_`•{*""``' \ ?? r "• • , .
y)'y?` --- - - ?\y\ 1?;`-,,__ lil \I ,, ; ,?;``; . ` I I I I I I I,' I` `' --- {?-- ; ..;. I x011
?-----------
----------
----------
--____ :°?; ';:- '? X1'1 ''``'?? \_? =----==---_--_-_-__------------
\I i f`I Ili ( r ' I' ' /j'' ' ? ?\`i _______ ____ __________ ,\`,` " .\?``. ?` -`_\?\
? I , ` ` `??`` 1;'11; \ --== `,? `,, , ? ? ?-
-------------- ,, ; ?` ;\`__````, ` `\? ;``'`
? ? X11 , I ,, ' ' %, ' _ `,?'`?: \``,`; ?``, ` _ _ _ ` `: ` `??: : ?: `?-`:`: `:.? <\
`: '?I 111 11 I II I ; I I I ; I I ' ``, .. _____ - --_ _ ,\`` `,`` ??`\?1? ?< ,1\11
\\ p ?_ - l;; (;, ; I (; i I (` ( 1 \ `I 1 ------ ; ;' ?\ (;\, ; 11\ 1`11 ''1'' J
? ? 11! 1111 ''111?1111?'I `'1? 1111111 ,\\, ___ - / ,, /``' ,-1.,.1{.-.1y I1 j 1 111` 1
° I I1 ;' 111'1 111 `,111 `?`\``,,,``-,`` ,- \ ? I II ' ;' , , ? %i % ` )
e c''±?i?4 I 'r it 111 i`1,1 \\``• ?```, `•`,,- ___ __-_ ? ?? ---- - ?? i i i ' 11' ''' r _--- `\`.2;
T\1';•I? % `, 11 \I`1` . \ ?` ``, ``_ - ii ' --------- I 1 I 11 1 ' `\' Z
8 r#I ? ?,`1 `,\?;??1,`;.??`: `` ;- ??`, `. ' :? ? ;,,;:_ ? J __ _ .\. -_ \,?, 11,'1,
x I 1 ;?\?: '`?? ,??,\''`,'`I?'`1`??'``.'`.? _ j ? ? __ `;; ` ` ?'`,., _ _ '1!,'1,11
--''? \' `,\ `\111\?`, \ `,\'?`,'-?.--' --- "" ?' - ???? "-'i' _- :?; .???'`?'? '? ? --------'
15
3g
(-tl

? iu
_.? `l? ?;\'`' ??''`??'?-_ _ _
XL-
,
----------- --
C.)
,?/''` 1' 1'!111`', --'i;';'%' - ;,°`"•?"i'?' '' /`i I , '?
10e?
-- ------------
------
-------__ ,r' ? ? ??`_ ___________ ____?;-'- :';;;';' 111 ?- ---- -----------
_ /i i /'{i / - ?`, _??`\` ?```` I 1 1 ; -------------------
-----
_1- ?`\`;'?? ; ___; -_--_--- -:--:_-`-5['-,:: ,, -/-r?.•; _' ,-,?;;;,.=1;, ; ; I I ; (; 111, - -?, II/?
{F -r -
`? __ _, ` _,`_• -_- __-- __-'lf-- - , l ' ??r-'i 1 1 ' i i I ' 1 1 ' I f \1 \\ - ,,?--'',I'' ?/
------------- ' I ?' I I I 1 i ;
111/ {r /may 1 1 1 1 ; ; I I ; ; ; 1 1 , -TTT-•'
Ly- 1 1 1 1 1' ? / ?%li
-------------------
?- =___ _??_\'?` __ r{. 1111 Illlljll \,111111 1?1'\\,? 1 ; I I ; II 1
- ---- - ..-`? L, 'III I1 ? \ ?1 \` \ \1`\\`\1\I\ 1'` ? \I 111 1'` \\` 1 ` \I ;? (- ? ?\ Cpl
--
`(-?- ?? • ?% ? -='-----_? - 'r-'=:; ?, ??\? \1==x111;\\``I:\??? `? ?\' ---- ?_'?? _? - -
148 t-j .40
----- ----
-i
m
C9
------------
O
--1 -0---I{00-??00 0
I r?>>> D
M X M;o M *i D N
m
D >m>mm m 0
Fn
II 0D00DD D .'
co g:UZ Ct*z Z;k: M ?_ Cn Z
CJt L4 N D
D I? II ;; II ?i II
0 Co M N trl J C Np
rn
M ? M ? M
? L() L ? ?

------------
I", VOI
Z ? \` \ ;11,'1, ?`,, _?"??`'!';'•?
'\`'``\11,•1,11' ?.`'.'``L;'`K'`?' ': % •,:•. .'••?'....
11,11,\1 ` 111 _ - \`,\.`` ;`.,`•• '.!,. `; .; .
g _ g ?• O _\,?` K 1' u V\
------___--- `• ? ``;?`? I 1' ? `_ - ? ? ` ``I ; `111 ` ` t: ?? .! .. y, • 1 .
"1`? :\ 1 `.\/' ' 1111 1' `•\ `` `` \``\`'`I `\ 1111 -?•,r ?Y 1 •• ... ?------I.
` `\. `\/ lil i 1111 ••?? w ,
O 0- '? 1 ?I??111 .. ?`` _ \\' • ill -`?1! i 1, I', iii,?.'?`I_?%G_-?;`'r.,,?.\ ~• •. •'.r •• .•.. ... - I ??J
D ---- -- 11 \`, ' 1 11 1 ;111 iil i I _- • A, • '
0011", r
O ., ?..,? ? I? I ,1 - ----- `? ?-?? ',???,,'', ; ?? ? ' `,'`, `,,;,,,11"x,11,1,,1, K,.-r•
;, 1
------
-----------
V ? V • C-i' V IIIII \? ,'?II111111 111 - `?t?F_ =V,?
0 NTI
IX I I,"
a > I((II?Y+1 111
z 0 -- --- - '? -
Cc -------
W?6
??? -- ',? i1`, 11111,1'1•` ?? ____ ??- --_ ":'/;';/ /;' "(r __ . C?
%
1
----------- -- ----
D
m
I I -
I
1
?.
n - I
o _
- - 11 ? I 1
---------- - -------
1 l
;r \ 111`1 l _ O
D m
- 1
` ? 1 1`I 11 -
11?\
1 - -
-
J
11
O _
4
y Z __ ym
_ _ C+J
- - --- - -
m
X ?o T1
f ? IA /Y
E
f o v 1 O -0 p-U D -0 -0
' °z °z mz° °z
5 m o X o D o o D
D D W D N D
3 c> D D II D II o r?* D m n
Nm it zcNil0b --Ni-U)i D
-`o m -;- ;acDZ II II m Fri
Z v
N ? ?°., iv D Z
;
m (.n ; 11 m II m II -- o, u)
r n rn w w D D C II
;u O -0 C-)
N
m v'mm
T
D D > N > O
N ? m -C
N / N
APPENDIX A
PRE-DEVELOPMENT CALCULATIONS
Carramore PUD - Phase I NV&R Project 203300
Stormwater Management Plan February 2004
1
1
1
1
1
s
i
i
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Job File: K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
Rain Dir: K:\03\03-300\03300\H&H\PondPack\
JOB TITLE
--------------------------
--------------------------
Project Date: 1/29/2004
Project Engineer: Withers and Ravenel
Project Title: Carramore PUD Phase I - Stormwater Management
This report documents pre-development peak discharge rates for the drainage areas in
Carramore PUD Phase I and surrounding areas.
SIN: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 1:56 P14
Date: 1/28/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Table of Contents
i
Table of Contents
********************** RAINFALL DATA ***********************
1-year IDF......
10-year IDF.....
25-year IDF.....
100-year IDF....
1-yr
I-D-F Table ........................ 1.01
10-yr
I-D-F Table ........................ 1.01
25-yr
I-D-F Table ........................ 1.02
100-yr
I-D-F Table ........................ 1.02
********************** TC CALCULATIONS *********************
PREDEV AREA #1.. Tc Calcs ........................... 2.01
PREDEV AREA #2.. Tc Calcs ........................... 2.02
PREDEV AREA #3.. Tc Calcs ........................... 2.03
OTHER AREA SOUTH Tc Calcs ........................... 2.04
OTHER AREA NORTH Tc Calcs ........................... 2.05
****************** RATIONAL METHOD CALCS *******************
PREDEV AREA #1.. C and Area ......................... 3.01
Rational Peak Q's .................. 3.02
PREDEV AREA #2..
PREDEV AREA #3..
OTHER AREA SOUTH
OTHER AREA NORTH
C and Area ......................... 3.03
Rational Peak Q's .................. 3.04
C and Area ......................... 3.05
Rational Peak Q's .................. 3.06
C and Area ......................... 3.07
Rational Peak Q's .................. 3.08
C and Area ......................... 3.09
Rational Peak Q's .................. 3.10
SIN: 22160372E1C5 Withers 6 Ravenel
PondPack Ver. 9.0029 Time: 1:56 PM Date: 1/28/2004
i
i
i
i
i
i
i
i
i
i
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... I-D-F Table Page 1.01
Name.... 1-year IDF Tag: 1-yr Event: 1 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 1-year IDF Tag: 1-yr
Rainfall-Intensity-Duration Curve
Time, hrs
----------- Intens., in/hr
-----------
.0830 5.1000
.1670 4.2000
.2500 3.5000
.3330 3.0000
.5000 2.3800
1.0000 1.5000
2.0000 .8900
3.0000 .6500
6.0000 .3830
12.0000 .2330
24.0000 .1250
Type.... I-D-F Table
Name.... 10-year IDF Tag: 10-yr Event: 10 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 10-year IDF Tag: 10-yr
Rainfall-Intensity-Duration Curve
Time, hrs
----------- Intens., in/hr
-----------
.0830 7.2200
.1670 6.1300
.2500 5.2500
.3300 4.6400
.5000 3.7100
.6670 3.1500
.8330 2.7100
1.0000 2.4100
1.5000 1.7400
2.0000 1.3700
3.0000 1.0200
6.0000 .6500
12.0000 .3900
24.0000 .2200
SIN: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 1:56 PM
Date: 1/28/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... I-D-F Table Page 1.02
Name.... 25-year IDF Tag: 25-yr Event: 25 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 25-year IDF Tag: 25-yr
Rainfall-Intensity-Duration Curve
Time, hrs
---------- Intens., in/hr
-----------
-
.0830 8.1900
.1670 7.0100
.2500 6.0300
.3300 5.4200
.5000 4.3200
.6670 3.7000
.8330 3.1900
1.0000 2.8400
1.5000 2.0600
2.0000 1.6200
3.0000 1.2100
6.0000 .7700
12.0000 .4600
24.0000 .2700
Type.... I-D-F Table
Name.... 100-year IDF Tag: 100-yr Event: 100 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 100-year IDF Tag: 100-yr
Rainfall-Intensity-Duration Curve
Time, hrs
----------- Intens., in/hr
-----------
.0830 9.7200
.1670 8.4000
.2500 7.2400
.3330 6.4700
.5000 5.2800
.6670 4.4800
.8330 3.8800
1.0000 3.5000
1.5000 2.5300
2.0000 2.0000
3.0000 1.5000
6.0000 .9600
12.0000 .5700
24.0000 .3300
S/td: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 1:56 PM Date: 1/28/2004
i
i
i
i
i
i
i
i
i
i
i
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.01
Name.... PREDEV AREA #1
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
TIME OF CONCENTRATION CALCULATOR
Segment #1: Tc: Kirpich (TN)
Hydraulic Length 1460.00 ft
Slope .036500 ft/ft
Multiplier 1.000 (Tc Adjustment)
Avg.Velocity 3.19 ft/sec
Segment #1 Time: .1271 hrs
------------------------------------------------------------------------
Total Tc: .1271 hrs
-------------------------
-------------------------
s/Id: 22160372E1c5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 1:56 PM
Date: 1/28/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.02
Name.... PREDEV AREA #2
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND 41 WEST JAN04.PPW
........................................................................
........................................................................
TIME OF CONCENTRATION CALCULATOR
........................................................................
........................................................................
Segment #1: Tc: Kirpich (TN)
Hydraulic Length 322.00 ft
Slope .062100 ft/ft
Multiplier 1.000 (Tc Adjustment)
Avg.Velocity 2.77 ft/sec
Segment #1 Time: .0323 hrs
------------------------------------------------------------------------
-------------------------
-------------------------
Total Tc: .0323 hrs
Calculated Tc < Min.Tc:
Use Minimum Tc...
Use Tc = .0833 hrs
-------------------------
-------------------------
S/N: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 1:56 PM Date: 1/28/2004
GARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.03
Name.... PREDEV AREA #3
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
........................................................................
........................................................................
TIME OF CONCENTRATION CALCULATOR
........................................................................
........................................................................
Segment #1: Tc: Kirpich (TN)
Hydraulic Length 337.00 ft
Slope .022300 ft/ft
Multiplier 1.000 (Tc Adjustment)
Avg.Velocity 1.88 ft/sec
Segment #1 Time: .0497 hrs
------------------------------------------------------------------------
-------------------------
-------------------------
Total Tc: .0497 hrs
Calculated Tc < Min.Tc:
Use Minimum Tc...
Use Tc = .0833 hrs
-------------------------
-------------------------
s/td: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 1:56 P14 Date: 1/28/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.04
Name.... PREDEV OTHER AREA SOUTH
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
........................................................................
........................................................................
TIME OF CONCENTRATION CALCULATOR
........................................................................
........................................................................
Segment #1: Tc: Kirpich (TN)
Hydraulic Length 613.00 ft
Slope .062000 ft/ft
Multiplier 1.000 (Tc Adjustment)
Avg.Velocity 3.21 ft/sec
Segment #1 Time: .0531 hrs
--------------------------------------
-------------------------
-------------------------
Total Tc: .0531 hrs
Calculated Tc < Min.Tc:
Use Minimum Tc...
Use Tc = .0833 hrs
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 1:56 PM Date: 1/28/2004
i
1
1
1
1
1
1
1
1
1
1
1
1
1
1
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.05
Name.... PREDEV OTHER AREA NORTH
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
TIME OF CONCENTRATION CALCULATOR
Segment #1: Tc: Kirpich (TN)
Hydraulic Length 452.00 ft
Slope .046500 ft/ft
Multiplier 1.000 (Tc Adjustment)
Avg.Velocity 2.68 ft/sec
Segment #1 Time 0469 hrs
--------------------------------------------------
Total Tc: .0469 hrs
Calculated Tc < Min.Tc:
Use Minimum Tc...
Use Tc = .0833 hrs
-------------------------
-------------------------
S/N: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 1:56 PM
Date: 1/28/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.06
Name.... PREDEV AREAS
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
------------------------------------------------------------------------
Tc Equations used...
------------ ------------------------------------------------------------
Kirpich (TN)
Tc = 0.00013
Where: Tc =
Lf =
Sf =
Mt =
* (Lf**0.77) * (Sf**-0.385) * Mt
Time of concentration, hrs
Flow length, ft
Slope, ft/ft
Tc Multiplier (Tc adjustment)
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 1:56 PM Date: 1/28/2004
POOZ/8Z/T :agvG Wd 9S:T :aiuTL 6Z00'6 .saA XaPdPuod
TauaAP'd 9 szau4TM SDIEZLE09TZZ :111S
..............
..............
£P£'9 .............
.............
OOT'LZ ............
............
TP£Z' .................................
.................................
<--- V3'dV gVIOZ 13 O GEIHDIZM
S99' OOL' 0096' sbuTpTTng
00£'T 005'9 OOOZ' spooM
BL£'P 006'6T OOZZ' a.zngspd/sspaO
----------
sa.zap ----------
saaop --------
0 --------------------------------
uoigdTjosoo aopjan5/TTOS
pajv x 0 paav
K,LKa ZNZIOI33ZOO 0 'IKNOIIVE
Mdd'PONW ISZM T# aNOd ZEOKV-d-dVD\'>lo12(iPuod\H3H\00££0\00£-£0\£0\:M ....GTT3
T# VEEV A3aHUd ''.'@WPN
TO'£ abpd pajV pup 0 .... odAy
sxoisiaNoo mmaozaMa-aaa xoa snasno xovaaHOa
ivZa xmaKac)vNvx damvm woms - i HsvHd ana a2immdvo
6002/8Z/T :ege(i lid 99:T :eUIT.L 6Z00'6 'zaA xZ)pdPuod
Tauaneg y SaGtPTM SDTSZLC091ZZ :111S

SL'LS -----------
I OOT'LZ -------
9LZ0'6 -----------
V£Z' I
000'T
V£Z'
OOT
TA-OOT
£V'8V I OOT'LZ OTLS'L V£Z' I 000'T V£Z' SZ -TA-SZ
£S'ZV I OOT'LZ £8V9'9 V£Z' I 000'T V£Z' ol -TA-OT
09'6Z I OOT'LZ 6LZ9'V V£Z' I 000'T V£Z' T aA-T
----------
S3o I -----------
I saaoe -------
aq/uT ----------- I
TeUT3 I ------
aogovg ---- - ------
(saeaA) -----
a xead I Paa?
'
-
-------- I
------- 0 I
-----------' ?Pe 0 0 baa3 bey
-
-
Sau TLZT' = oy
3QI aeaA-OOT OOT -TA-00T
---- ------------
anan0 3QI ----- ------
aTT3 - ------
baa3 -----
f) el
aOgS 30I 00 axPM :su"04 S TPUOT4Pd
(009£ * ZT) / 09S£V = UOTSaaAU00 aaauM !UOTSaanu00 S4TUO + VTO = a
S39'dVH3SIQ MV3d QOH13H 'IKNOIIYd 30 ) 2UVHNOS
Mdd' VONVP IS3M T# QNOd 3UOWTd-dV0\NOPdPuOd\H?9H\00££0\00£-£0\£0\:M ' ' ' ' aTT3
T # Ff3'HV A3Q32id ' aweN
ZO'£ abed 9,0 NvOd TPUOTTe'd ....aCMy
sxomiaxoo xxamozaAaa-sxd xoa sndsno xovaaHoa
K%Md s>NSM!)VxVN xas oss - z HsVHa and xxoMUUVo
GARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... C and Area Page 3.03
Name.... PREDEV AREA #2
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
RATIONAL C COEFFICIENT DATA
Area C x Area
Soil/Surface Description C acres acres
-------------------------------- -------- ---------- ----------
Grass/Pasture .2200 3.800 .836
WEIGHTED C & TOTAL AREA ---> .2200 3.800 .836
.........................................................................
.........................................................................
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 1:56 PM Date: 1728/2009
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Rational Peak Q's Page 3.04
Name.... PREDEV AREA #2
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
SUMMARY OF RATIONAL METHOD PEAK DISCHARGES
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)
Rational Storms: Wake Co IDF Stor
Tag
----- Freq
------ File
-------
----- IDF Curve
------------
----
100-yr 100 100-year IDF
Tc = .0833 hrs

Tag
Freq
C
C adj -----------
I C -------
I -----------
Area I
Peak Q
(years) factor I final in/hr acres I
--- cfs
----------
-----
1-yr ------
1 -----
.220 ------
1.000 I-----------
I .220 --------
5.0968 I
-------
3.800 1 4.30
10-yr 10 .220 1.000 1 .220 7.2161 3.800 1 6.08
25-yr 25 .220 1.000 1 .220 8.1858 3.800 I 6.90
100-yr 100 .220 1.000 1 .220
----------- 9.7153
-------- 3.800 I
---------- 8.19
S/N: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 1:56 PM Date: 1/28/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... C and Area Page 3.05
Name.... PREDEV AREA #3
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
RATIONAL C COEFFICIENT DATA
-- -------------------------------------------------------------------------
Soil/Surface Description
--------------------------------
Grass/Pasture
Area C x Area
C --acres-- --acres
- ---
.2200 2.700 .594
WEIGHTED C & TOTAL AREA ---> .2200 2.700 .594
.........................................................................
.........................................................................
Withers & Ravenel
Time: 1:56 P14
Date: 1/28/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Rational Peak Q's Page 3.06
Name.... PREDEV AREA #3
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
SUMMARY OF RATIONAL METHOD PEAK DISCHARGES
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)
Rational Storms: Wake Co IDF Stor
Tag Freq File IDF Curve
100-yr 100 100-year IDF
Tc = .0833 hrs
Tag Freq C C adj I C I Area I Peak Q
(years) factor I final in/hr acres I
-- cfs
----------
-----
1-yr ------
1 -----
.220 ------ I
1.000 1 ---------
.220 ----------
5.0968 I
--------
2.700 1 3.05
10-yr 10 .220 1.000 1 .220 7.2161 2.700 1 4.32
25-yr 25 .220 1.000 1 .220 8.1858 2.700 1 4.90
100-yr 100 .220 1.000 1 .220
--------- 9.7153
---------- 2.700 1
---------- 5.82
S/N: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 1:56 P14 Date: 1/28/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... C and Area Page 3.07
Name.... PREDEV OTHER AREA SOUTH
File.... K:\03\03-300\03300\H&H\PondP ack\CARRAMORE POND #1 WEST_JAN04.PPW
RATIONAL C COEFFICIENT DATA
-------- ----------------------------- -------------------
Area -----------------
C x Area
Soil/Surface Description acres
C acres

Grass/Pasture --
--
-
.2200 8.400 --
1.848
WEIGHTED
.........
......... C & TOTAL AREA --->
............................
............................ .2200 8.400
...................
................... 1.848
.................
.................
SIN: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 1:56 PM
Date: 1/28/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... Rational Peak Q's Page 3.08
Name.... PREDEV OTHER AREA SOUTH
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
SUMMARY OF RATIONAL METHOD PEAK DISCHARGES
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)
Rational Storms: Wake Co IDF Stor
Tag
----- Freq
------ - File
------
----- IDF Curve
------------
----
100-yr 100 100-year IDF
Tc = .0833
---- hrs
----------
Tag Freq C C adj -----------
I C ----
I Area I Peak Q
(years) factor I final in/hr acres I cfs
--------
-
-----
1-yr ------ -
1 ----
.220 ------
1.000 I-----------
I .220 --------
5.0968 ----------I
8.400 I -
9.50
10-yr 10 .220 1.000 i .220 7.2161 8.400 I 13.45
25-yr 25 .220 1.000 1 .220 8.1858 8.400 I 15.25
100-yr 100 .220 1.000 1 .220
----------- 9.7153
-------- 8.400 I
---------- 18.10
S/N: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 1:56 PM Date: 1/28/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR PRE-DEVELOPMENT CONDITIONS
Type.... C and Area Page 3.09
Name.... PREDEV OTHER AREA NORTH
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
RATIONAL C COEFFICIENT DATA
Area C x Area
Soil/Surface Description C acres acres
-------------------------------- -------- ---------- ----------
Grass/Pasture .2200 6.500 1.430
WEIGHTED C & TOTAL AREA ---> .2200 6.500 1.430
P(
Carramor PUI SIN: 22160372E1C5 Withers & Ravenel
Stormwai PondPack Ver. 9.0029 Time: 1:56 PM Da
CARRAMORE
PONDPAC
Type.... Rational Peak
Name.... PREDEV OTHER.
File.... K:\03\03-300\
SUMMA
Q = CiA * Units C
Rational Storms: Wake
Tag Freq File
----- ------ -------
100-yr 100
Tag Freq c

----- (years)
------
-----
1-yr 1 .220
10-yr 10 .220
25-yr 25 .220
100-yr 100 .220
SIN: 22160372E1C5
PondPack Ver. 9.0029
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 EAST
Job File: K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 EAST_JAN04.PPW
Rain Dir: K:\03\03-300\03300\H&H\PondPack\
--------------------------
--------------------------
JOB TITLE
--------------------------
--------------------------
Project Date: 1/29/2004
Project Engineer: Withers and Ravenel
Project Title: Carramore PUD Stormwater Management
Proposed Pond #1 East - Dry pond on the east side of buffered stream, just upstream of
Riggsbee Farm.
Pond #1 East Desiqn Hiqhliqhts
Pond Bottom = 353'
Top of Pond = 360'
10-year Calculated Freeboard = 1.76 ft
100-year Calculated Freeboard = 1.03 ft
Outlet Structure:
? 4' x 4' RCP Box Riser Structure w/ crest at 358.75'
? 9" Circular Orifice w/ invert at 353'
? 18" RCP Barrel; 60 linear feet at 0.667% slope; Inverts at 353' and 352.6'
s/H: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 2:52 PM
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 EAST
Table of Contents
Table of Contents
i
********************** MASTER SUMMARY **********************
Watershed....... Mod. Rational Grand Summary ........ 1.01
Master Network Summary ............. 1.02
********************** RAINFALL DATA ***t*******************
1-year IDF...... 1-yr
I-D-F Table ........................ 2.01
10-year IDF..... 10-yr
I-D-F Table ........................ 2.01
25-year IDF..... 25-yr
I-D-F Table ........................ 2.02
100-year IDF.... 100-yr
I-D-F Table ........................ 2.02
********************** TC CALCULATIONS *********************
POND 1 EAST..... PRE
Tc Calcs ........................... 3.01
POND 1 EAST..... POST
Tc Calcs ........................... 3.03
*********************** POND VOLUMES ***********************
POND 1 EAST..... Vol: Elev-Area ..................... 4.01
******************** OUTLET STRUCTURES *********************
Outlet A........ Outlet Input Data .................. 5.01
Composite Rating Curve ............. 5.04
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 2:52 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 EAST
Table of Contents
Table of Contents (continued)
ii
****************** RATIONAL METHOD CALCS *******************
POND 1 EAST..... PRE
C and Area ......................... 6.01
POND 1 EAST..... 1-yr
Mod. Rational Storm Calcs .......... 6.02
POND 1 EAST..... POST
C and Area ......................... 6.03
POND 1 EAST..... 10-yr
Mod. Rational Storm Calcs .......... 6.04
POND 1 EAST..... 25-yr
Mod. Rational Storm Calcs .......... 6.05
POND 1 EAST..... 100-yr
Mod. Rational Storm Calcs .......... 6.06
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 2:52 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 EAST
Type.... Mod. Rational Grand Summary Page 1.01
Name.... Watershed -
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 EAST JAN04.PPW
************************************************************************
************************************************************************
*
*
* MODIFIED RATIONAL METHOD
* ---- Grand Summary For All Storm Frequencies ----
*
*
************************************************************************
************************************************************************
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)
Area = 12.800 acres Tc = .0833 hrs
................ ......... ............ ...... VOLUMES
Freq. Adjusted Duration I Qpeak Allowablel Inflow Storage
years 'C'
---------------- hrs
--------- in/hr
------------ cfs
------ cfs I
----------- --- ac-ft
-------- ac-ft
----------
1 .407 .4000 2.7513 14.46 13.09 l .478 .217
10 .407 .4333 4.0747 21.42 18.82 l .767 .365
25 .407 .4333 4.7514 24.98 21.44 l .895 .437
100 .407 .4500 5.6363 29.63 25.57 l 1.102 .539
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 2:52 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 EAST
Type.... Master Network Summary Page 1.02
Name.... Watershed
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 EAST JAN04.PPW
MASTER DESIGN STORM SUMMARY
Default Network Design Storm File, ID
Return Event
------------
1-yr
10-yr
25-yr
100-yr
Rainfall
Type
---------------
I-D-F Curve
I-D-F Curve
I-D-F Curve
I-D-F Curve
IDF ID
1-year IDF
10-year IDF
25-year IDF
100-year IDF
Wake Co IDF Stor
MASTER NETWORK SUMMARY
Modified Rational Method Network
(*Node=Outfall; +Node=Diversion;)
(Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt)
Max
Return HYG Vol Qpeak Qpeak Max WSEL Pond Storage
Node
----- ID
--
- Type Event ac-ft Trun hrs cfs ft ac-ft

*OUT -
----
1 EAST ---- ----
JCT ------
1 ---------- --
.477 ---------
.4600 --------
3.20 -------- ------------
*OUT 1 EAST JCT 10 .766 .5000 3.98
*OUT 1 EAST JCT 25 .894 .5000 4.25
*OUT 1 EAST JCT 100 1.100 .5100 9.23
POND 1 EAST AREA 1 .478 .0833 14.46
POND 1 EAST AREA 10 .767 .0833 21.42
POND 1 EAST AREA 25 .895 .0833 24.98
POND 1 EAST AREA 100 1.101 .0833 29.63
POND 1 EAST IN POND 1 .478 .0900 14.46
POND 1 EAST IN POND 10 .767 .0900 21.42
POND 1 EAST IN POND 25 .894 .0900 24.98
POND 1 EAST IN POND 100 1.101 .0900 29.63
POND 1 EAST OUT POND 1 .477 .4600 3.20 356.34 .399
POND 1 EAST OUT POND 10 .766 .5000 3.98 357.71 .657
POND 1 EAST OUT POND 25 .894 .5000 4.25 358.24 .776
POND 1 EAST OUT POND 100 1.100 .5100 9.23 358.97 .950
SIN: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 2:52 PM
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 EAST
Type.... I-D-F Table Page 2.01
Name.... 1-year IDF Tag: 1-yr Event: 1 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 1-year IDF Tag: 1-yr
Rainfall-Intensity-Duration Curve
Time, hrs
----------- Intens., in/hr
-----------
.0830 5.1000
.1670 4.2000
.2500 3.5000
.3330 3.0000
.5000 2.3800
1.0000 1.5000
2.0000 .8900
3.0000 .6500
6.0000 .3830
12.0000 .2330
24.0000 .1250
Type.... I-D-F Table
Name.... 10-year IDF Tag: 10-yr Event: 10 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 10-year IDF Tag: 10-yr
Rainfall-Intensity-Duration Curve
Time, hrs
----------- Intens., in/hr
-----------
.0830 7.2200
.1670 6.1300
.2500 5.2500
.3300 4.6400
.5000 3.7100
.6670 3.1500
.8330 2.7100
1.0000 2.4100
1.5000 1.7400
2.0000 1.3700
3.0000 1.0200
6.0000 .6500
12.0000 .3900
24.0000 .2200
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 2:52 PM Date: 1/29/2004
GARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 EAST
Type.... I-D-F Table Page 2.02
Name.... 25-year IDF Tag: 25-yr Event: 25 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 25-year IDF Tag: 25-yr
Rainfall-Intensity-Duration Curve
Time, hrs Intens., in/hr
----------
-----------
.0830 -
8.1900
.1670 7.0100
.2500 6.0300
.3300 5.4200
.5000 4.3200
.6670 3.7000
.8330 3.1900
1.0000 2.8400
1.5000 2.0600
2.0000 1.6200
3.0000 1.2100
6.0000 .7700
12.0000 .4600
24.0000 .2700
Type.... I-D-F Table
Name.... 100-year IDF Tag: 100-yr Event: 100 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 100-year IDF Tag: 100-yr
Rainfall-Intensity-Duration Curve
Time, hrs
--------
- Intens., in/hr
-----------
--
.0830 9.7200
.1670 8.4000
.2500 7.2400
.3330 6.4700
.5000 5.2800
.6670 4.4800
.8330 3.8800
1.0000 3.5000
1.5000 2.5300
2.0000 2.0000
3.0000 1.5000
6.0000 .9600
12.0000 .5700
24.0000 .3300
S/it: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 2:52 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 EAST
Type.... Tc Calcs Page 3.01
Name.... POND 1 EAST Tag: PRE
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 EAST JAN04.PPW
........................................................................
........................................................................
TIME OF CONCENTRATION CALCULATOR
........................................................................
........................................................................
Segment #1: Tc: Kirpich (TN)
Hydraulic Length 1454.00 ft
Slope .035100 ft/ft
Multiplier 1.000 (Tc Adjustment)
Avg.Velocity 3.14 ft/sec
Segment #1 Time: .1286 hrs
------------------------------------------------------------------------
-------------------------
-------------------------
Total Tc: .1286 hrs
S117: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 2:52 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 EAST
Type.... Tc Calcs Page 3.02
Name.... POND 1 EAST Tag: PRE
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 EAST_JAN04.PPW
------------------------------------------------------------------------
Tc Equations used...
------------------------------------------------------------------------
Kirpich (TN)
Tc = 0.00013 * (Lf**0.77) * (Sf**-0.385) * Mt
Where: Tc = Time of concentration, hrs
Lf = Flow length, ft
Sf = Slope, ft/ft
Mt = Tc Multiplier (Tc adjustment)
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 2:52 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##1 EAST
Type.... Tc Calcs Page 3.03
Name.... POND 1 EAST Tag: POST
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 EAST JAN04.PPW
........................................................................
........................................................................
TIME OF CONCENTRATION CALCULATOR
........................................................................
........................................................................
Segment #1: Tc: User Defined
Segment #1 Time: .0833 hrs
------------------------------------------------------------------------
-------------------------
-------------------------
Total Tc: .0833 hrs
Calculated Tc < Min.Tc:
Use Minimum Tc...
Use Tc = .0833 hrs
-------------------------
-------------------------
S/N: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 2:52 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 EAST
Type.... Vol: Elev-Area Page 4.01
Name.... POND 1 EAST
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND 41 EAST_JAN04.PPW
Elevation Planimeter Area Al+A2+sgr(A1*A2) Volume Volume Sum
(ft) (sq.in) (acres)
------- (acres)
----------------- (ac-ft)
--------- (ac-ft)
-------------
------------
353.00 --------------
----- .0748 .0000 .000 .000
354.00 ----- .1008 .2624 .087 .087
356.00 ----- .1578 .3847 .256 .344
358.00 ----- .2213 .5660 .377 .721
360.00 ----- .2907 .7656 .510 1.232
POND VOLUME EQUATIONS
* Incremental volume computed by the Conic Method for Reservoir Volumes.
Volume = (1/3) * (EL2-EL1) * (Areal + Area2 + sq.rt.(Areal*Area2))
where: EL1, EL2 = Lower and upper elevations of the increment
Areal,Area2 = Areas computed for EL1, EL2, respectively
Volume = Incremental volume between EL1 and EL2
5114: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 2:52 PI4
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##1 EAST
Type.... Outlet Input Data Page 5.01
Name.... Outlet A
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 EAST JAN04.PPW
REQUESTED POND WS ELEVATIONS:
Min. Elev.= 353.00 ft
Increment = .10 ft
Max. Elev.= 360.00 ft
OUTLET CONNECTIVITY
**********************************************
---> Forward Flow Only (UpStream to DnStream)
<--- Reverse Flow Only (DnStream to UpStream)
<---> Forward and Reverse Both Allowed
Structure No. Outfall E1, ft E2, ft
----------------- ---- ------- --------- ---------
Inlet Box RI ---> CV 358.750 360.000
Orifice-Circular OR ---> CV 353.000 360.000
Culvert-Circular CV ---> TW 353.000 360.000
TW SETUP, DS Channel
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 2:52 P14 Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##1 EAST
Type.... Outlet Input Data Page 5.02
Name.... Outlet A
File.... K:\03\03-300\03300\H&11\PondPack\CARRAMORE POND #1 EAST_JAN04.PPW
OUTLET STRUCTURE INPUT DATA
Structure ID = RI
Structure Type
--
- = Inlet Box
-------------
------
--------------
# of Openings = 1
Invert Elev. = 358.75 ft
Orifice Area = 16.0000 sq.ft
Orifice Coeff. _ .600
Weir Length = 16.00 ft
Weir Coeff. = 3.100
K, Submerged = .000
K, Reverse = 1.000
Kb,Barrel = .000000 (per ft of full flow)
Barrel Length = .00 ft
Mannings n = .0000
Structure ID = OR
Structure Type = Orifice-Circular
------------------------------------
# of Openings = 1
Invert Elev. = 353.00 ft
Diameter = .7500 ft
Orifice Coeff. _ .600
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 2:52 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 EAST
Type.... Outlet Input Data Page 5.03
Name.... Outlet A
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 EAST JAN04.PPW
OUTLET STRUCTURE INPUT DATA
Structure ID = CV
Structure Type
------
--- = Culvert-Circular
-
--------
No. Barrels ------------
= 1 ------
Barrel Diameter = 1.5000 ft
Upstream Invert = 353.00 ft
Dnstream Invert = 352.60 ft
Horiz. Length = 60.00 ft
Barrel Length = 60.00 ft
Barrel Slope = .00667 ft/ft
OUTLET CONTROL DATA...
Mannings n = .0130
Ke = .5000
Kb = .018213
Kr = .5000
HW Convergence = .001
(forward entrance loss)
(per ft of full flow)
(reverse entrance loss)
+/- ft
INLET CONTROL DATA...
Equation form = 1
Inlet Control K = .0098
Inlet Control M = 2.0000
Inlet Control c = .03980
Inlet Control Y = .6700
T1 ratio (HW/D) = 1.157
T2 ratio (HW/D) = 1.303
Slope Factor = -.500
Use unsubmerged inlet control Form 1 equ. below T1 elev.
Use submerged inlet control Form 1 equ. above T2 elev.
In transition zone between unsubmerged and submerged inlet control,
interpolate between flows at T1 & T2...
At T1 Elev = 354.74 ft ---> Flow = 7.58 cfs
At T2 Elev = 354.96 ft ---> Flow = 8.66 cfs
Structure ID = TW
Structure Type = TW SETUP, DS Channel
------------------------------------
FREE OUTFALL CONDITIONS SPECIFIED
SIN: 22160372EIC5
PondPack Ver. 9.0029
CONVERGENCE TOLERANCES ...
Maximum Iterations= 30
Min. TW tolerance = .01 ft
Max. TW tolerance = .01 ft
Min. HW tolerance = .01 ft
Max. HW tolerance = .01 ft
Min. Q tolerance = .10 cfs
Max. Q tolerance = .10 cfs
Withers & Ravenel
Time: 2:52 PM
Date: 1/29/2004 E
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 EAST
Type.... Composite Rating Curve
Name.... Outlet A
Page 5.04
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 EAST_JAN04.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
WS Elev, Total Q Notes
--------
Elev. --------
Q -------- Converge
TW Elev Error ------- --- --- ------------
ft cfs ft +/-ft Contrib
-------- uting
------ Structures
------------
--------
353.00 -------
.00 -----
Free --- -----
Outfall (no Q: RI,OR ,CV)
353.10 .03 Free Outfall OR,CV (no Q: RI)
353.20 .10 Free Outfall OR,CV (no Q: RI)
353.30 .21 Free Outfall OR,CV (no Q: RI)
353.40 .38 Free Outfall OR,CV (no Q: RI)
353.50 .57 Free Outfall OR,CV (no Q: RI)
353.60 .79 Free Outfall OR,CV (no Q: RI)
353.70 1.01 Free Outfall OR,CV (no Q: RI)
353.80 1.00 Free Outfall OR,CV (no Q: RI)
353.90 1.13 Free Outfall OR,CV (no Q: RI)
354.00 1.25 Free Outfall OR,CV (no Q: RI)
354.10 1.37 Free Outfall OR,CV (no Q: RI)
354.20 1.50 Free Outfall OR,CV (no Q: RI)
354.30 1.61 Free Outfall OR,CV (no Q: RI)
354.40
354.50 1.71
1.81 Free
Free Outfall
Outfall OR,CV
OR,CV (no
(no Q:
Q: RI)
RI)
354.60 1.90 Free Outfall OR,CV (no Q: RI)
354.70 1.98 Free Outfall OR,CV (no Q: RI)
354.80 2.07 Free Outfall OR,CV (no Q: RI)
354.90 2.16 Free Outfall OR,CV (no Q: RI)
355.00 2.24 Free Outfall OR,CV (no Q: RI)
355.10 2.33 Free Outfall OR,CV (no Q: RI)
355.20 2.41 Free Outfall OR,CV (no Q: RI)
355.30 2.48 Free Outfall OR,CV (no Q: RI)
355.40 2.56 Free Outfall OR,CV (no Q: RI)
355.50 2.63 Free Outfall OR,CV (no Q: RI)
355.60 2.71 Free Outfall OR,CV (no Q: RI)
355.70 2.78 Free Outfall OR,CV (no Q: RI)
355.80 2.85 Free Outfall OR,CV (no Q: RI)
355.90 2.92 Free Outfall OR,CV (no Q: RI)
356.00 2.98 Free Outfall OR,CV (no Q: RI)
356.10 3.05 Free Outfall OR,CV (no Q: RI)
356.20 3.11 Free Outfall OR,CV (no Q: RI)
356.30 3.18 Free Outfall OR,CV (no Q: RI)
356.40 3.24 Free Outfall OR,CV (no Q: RI)
356.50 3.30 Free Outfall OR,CV (no Q: RI)
356.60 3.36 Free Outfall OR,CV (no Q: RI)
356.70 3.42 Free Outfall OR,CV (no Q: RI)
S/17: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 2:52 PM
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 EAST
Type.... Composite Rating Curve
Name.... Outlet A
Page 5.05
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 EAST JAN04.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
WS Elev, Total Q Notes
-------- -------- ----- --- Converge ------ ---- --- ------------
Elev. Q TW Elev Error
ft cfs ft +/-ft Contributing
----------
-
- Structures
------------
--------
356.80 -------
3.48 -----
Free --- -----
Outfall -
-
OR,CV (no Q: RI)
356.90 3.53 Free Outfall OR,CV (no Q: RI)
357.00 3.59 Free Outfall OR,CV (no Q: RI)
357.10 3.65 Free Outfall OR,CV (no Q: RI)
357.20 3.70 Free Outfall OR,CV (no Q: RI)
357.30 3.76 Free Outfall OR,CV (no Q: RI)
357.40 3.82 Free Outfall OR,CV (no Q: RI)
357.50 3.87 Free Outfall OR,CV (no Q: RI)
357.60 3.92 Free Outfall OR,CV (no Q: RI)
357.70 3.97 Free Outfall OR,CV (no Q: RI)
357.80 4.03 Free Outfall OR,CV (no Q: RI)
357.90 4.08 Free Outfall OR,CV (no Q: RI)
358.00 4.13 Free Outfall OR,CV (no Q: RI)
358.10 4.18 Free Outfall OR,CV (no Q: RI)
358.20 4.23 Free Outfall OR,CV (no Q: RI)
358.30 4.27 Free Outfall OR,CV (no Q: RI)
358.40 4.32 Free Outfall OR,CV (no Q: RI)
358.50 4.37 Free Outfall OR,CV (no Q: RI)
358.60 4.42 Free Outfall OR,CV (no Q: RI)
358.70 4.46 Free Outfall OR,CV (no Q: RI)
358.75 4.49 Free Outfall OR,CV (no Q: RI)
358.80 5.02 Free Outfall RI,OR,CV
358.90 7.22 Free Outfall RI,OR,CV
359.00 10.26 Free Outfall RI,OR,CV
359.10 13.72 Free Outfall RI,OR,CV
359.20 17.34 Free Outfall RI,OR,CV
359.30 20.09 Free Outfall RI,CV (no Q: OR)
359.40 20.28 Free Outfall RI,CV (no Q: OR)
359.50 20.47 Free Outfall RI,CV (no Q: OR)
359.60 20.66 Free Outfall RI,CV (no Q: OR)
359.70 20.85 Free Outfall RI,CV (no Q: OR)
359.80 21.03 Free Outfall RI,CV (no Q: OR)
359.90 21.22 Free Outfall RI,CV (no Q: OR)
360.00 21.40 Free Outfall RI,CV (no Q: OR)
SIN: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 2:52 PM
Date: 1/29/2004 1
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 EAST
Type.... C and Area Page 6.01
Name.... POND 1 EAST Tag: PRE
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 EAST_JAN04.PPW
RATIONAL C COEFFICIENT DATA
Area C x Area
Soil/Surface Description C acres acres
-------------------------------- -------- ---------- ----------
Pasture/Agriculture .2200 12.800 2.816
WEIGHTED C & TOTAL AREA ---> .2200 12.800 2.816
.........................................................................
.........................................................................
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 2:52 PIA Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 EAST
Type.... Mod. Rational Storm Calcs Page 6.02
Name.... POND 1 EAST Tag: 1-yr Event: 1 yr
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 EAST_JAN04.PPW
Storm... 1-year IDF Tag: 1-yr
MODIFIED RATIONAL METHOD
---- Summary for Single Storm Frequency ----
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)
RETURN FREQUENCY: 1 yr 'C' Adjustment = 1.000Allowable Q = 13.09 cfs
----------------------------------------------------------------------------
Hydrograph Storm Duration, Td = .4000 hrs Tc = .0833 hrs
Hydrograph File:
................. 1-yr
.........
............
.......
.............
..........
........
................. ......... ............ ....... ............. ..........
VOLUM ........
ES
Wtd. Adjusted Duration Intens. Area Qpeak I Inflow Storage
'C' 'C' hrs in/hr acres cfs I
------- --- ac-ft
---------- ac-ft
--------
-----------------
.407 .407 ---------
.0833 ------------
5.0968 -------
12.800 --
26.79 1 .184 .094
.407 .407 .1667 4.2036 12.800 22.10 1 .304 .169
.407 .407 .2500 3.5000 12.800 18.40 1 .380 .200
.407 .407 .3333 2.9988 12.800 15.76 1 .434 .209
************************************************************ Storage Maximum
.407 .407 .4000 2.7513 12.800 14.46 1 .478 .217
******************************************************************** ********
.407 .407 .5000 2.3800 12.800 12.51 1 Qpeak < Qallow
0
0
0
0
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 2:52 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##1 EAST
Type.... C and Area Page 6.03
Name.... POND 1 EAST Tag: POST
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 EAST_JAN04.PPW
RATIONAL C COEFFICIENT DATA
...:::...................................................................
--------------------------------
Soil/Surface Description
-
Historic Site/Open Space
Residential; 3 to 4 du/acre
Residential; 2 to 3 du/acre
Pond Area; Grass
Area C x Area
C
-------- --acres acres
.2500 -
--
1.800 .450
.4750 3.000 1.425
.4250 7.700 3.273
.2200 .300 .066
J WEIGHTED C & TOTAL AREA ---> .4073 12.800 5.214
.........................................................................
.........................................................................
7
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 2:52 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN'
PONDPACK OUTPUT FOR POND ##1 EAST
TYPe.... Mod. Rational Storm Calcs Page 6.04
Name.... POND 1 EAST Tag: 10-yr Event: 10 yr
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 EAST_JAN04.PPW
Storm... 10-year IDF Tag: 10-yr
MODIFIED RATIONAL METHOD
---- Summary for Single Storm Frequency
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)
RETURN FREQUENCY: 10 yr 'C' Adjustment = 1.000Allowable Q = 18.82 cfs
----------------------------------------------------------------------------
Hydrograph Storm Duration, Td = .4333 hrs Tc = .0833 hrs
Hydrograph File:
................. 10-yr
.........
...........
.........
............
....
:
.....
:
................. ......... ........... ......... ............ ....
VOLU .....
MES
Wtd. Adjusted Duration Intens. Area Qpeak I Inflow Storage
'C' 'C' hrs in/hr acres cfsI
-- --- ac-ft
--------- ac-ft
---------
-----------------
.407 .407 ---------
.0833 -----------
7.2161 ---------
12.800 ------
37.93 I .261 .132
.407 .407 .1667 6.1343 12.800 32.25 ( .444 .250
.407 .407 .2500 5.2500 12.800 27.60 1 .570 .311
.407 .407 .3333 4.6218 12.800 24.30 1 .669 .345
************************************************************ Storage Maximum
407 .407 .4333 4.0747 12.800 21.42 1 .767 .365
****************************************************************************
.407 .407 .5000 3.7100 12.800 19.50 1 .806 .352
.407 .407 .6667 3.1511 12.800 16.57 1 Qpeak < Qallow
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 2:52 PM Date: 1/29/2004 r
L
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 EAST
Type.... Mod. Rational Storm Calcs Page 6.05
Name.... POND 1 EAST Tag: 25-yr Event: 25 yr
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 EAST_JAN04.PPW
Storm... 25-year IDF Tag: 25-yr
MODIFIED RATIONAL METHOD
---- Summary for Single Storm Frequency ----
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)
RETURN FREQUENCY:
----------------- 25 yr 'C' Adjustment = 1.000Allowable
---------------------------------------- Q = 21.44
----------- cfs
--------
Hydrograph Storm Duration, Td = .4333 hrs Tc = .0833 hrs
Hydrograph File: 25-yr
................. ......... ........ ....... VOLUM ES
Wtd. Adjusted Duration Intens. Area Qpeak I Inflow Storage
'C' 'C' hrs in/hr acres cfs I ac-ft
--- ac-ft
--------
-----------------
.407 .407 ---------
.0833 --------
8.1858 ------------
12.800 -------- --
43.03 I --------
.296 .148
.407 .407 .1667 7.0147 12.800 36.88 ? .508 .286
.407 .407 .2500 6.0300 12.800 31.70 1 .655 .360
.407 .407 .3333 5.3984 12.800 28.38 1 .782 .413
***************** ******************************************* Storage Maximum
407 .407 .4333 4.7514 12.800 24.98 1 .895 .437
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
.407 .407 .5000 4.3200 12.800 22.71 1 .938 .422
.407 .407 .6667 3.7012 12.800 19.46 1 Qpeak < Qallow
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 2:52 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND Ill EAST
Type.... Mod. Rational Storm Calcs Page 6.06
Name.... POND 1 EAST Tag: 100-yr Event: 100 yr
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 EAST_JAN04.PPW
Storm... 100-year IDF Tag: 100-yr
MODIFIED RATIONAL METHOD
---- Summary for Single Storm Frequency ----
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)
RETURN FREQUENCY: 100 yr 'C' Adjustment = 1.000Allowable Q = 25.57 cfs
----------------------------------------------------------------------------
Hydrograph Storm Duration, Td = .4500 hrs Tc = .0833 hrs
Hydrog
...... raph File:
........... 100-yr
.........
............
........
............
..........
........
...... ........... ......... ............ ........ ............ ..........
VOLUM ........
ES
Wtd. Adjusted Duration Intens. Area Qpeak I Inflow Storage
'C' Oct hrs in/hr acres cfs I
- ac-ft
---------- ac-ft
--------
------
.407 -----------
.407 ---------
.0833 ------------
9.7153 --------
12.800 -------- -
-
51.07 I .352 .174
.407 .407 .1667 8.4052 12.800 44.19 1 .609 .345
.407 .407 .2500 7.2400 12.800 38.06 1 .786 .434
.407 .407 .3333 6.4676 12.800 34.00 1 .937 .496
****** *********** ******************************************* Storage Maximum
407 .407 .4500 5.6363 12.800 29.63 1 1.102 .539
****** *********** *************************************************** ********
.407 .407 .5000 5.2800 12.800 27.76 1 1.147 .531
.407 .407 .6667 4.4816 12.800 23.56 1 Qpeak < Qallow
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 2:52 PM Date: 1/29/2004
a
Q
0
PC??, C«
? J
I
d
C
Dig
0
a
WG?_

CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #l1 WEST
Job File: K:\03\03-300\03300\H&H\PondPack\CARRAbIORE POND #1 WEST_JAN04.PPW
Rain Dir: K:\03\03-300\03300\H&H\PondPack\
JOB TITLE
Project Date: 1/29/2004
Project Engineer: Withers and Ravenel
Project Title: Carramore PUD Stormwater Management
Proposed Pond #1 West - wet pond on west side of buffered stream, at main outfall just
upstream of Riggsbee Farm.
Pond #1 West Design Highlights
Pond Bottom = 346'
Normal Pool = 350'
Top of Pond = 356'
Required Surface Area = 0.185 acres (8045 ft 2)
Surface Area Provided = 0.203 acres (8834 ft2)
Required WQ Storage Volume = 0.456 ac-ft (19,863 ft')
WQ Storage Volume Provided = 0.798 ac-ft (34,774 ft')
10-year Calculated Freeboard = 1.37 ft
100-year Calculated Freeboard = 0.80 ft
Outlet Structure:
? 4' x 4' RCP Box Riser Structure w/ crest at 355.1'
? Two 24" x 6" Rectangular orifices w/ inverts at 353'
? 24" RCP Barrel; 120 linear feet at 0.833% slope; Inverts at 346' and 345'
? Separate Outfall for Extended Draw-down - 6" Ductile Iron Pipe through the dam;
2.5" circular orifice at 350' elevation on downstream end (orifice is parallel to
water surface), that discharges to a level spreader outside the Neuse River Buffer
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 PI4
7
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Table of Contents
Table of Contents
i
********************** MASTER SUMMARY **********************
Watershed....... Mod. Rational Grand Summary ........ 1.01
Master Network Summary ............. 1.02
********************** RAINFALL DATA ***********************
1-year IDF...... 1-yr
I-D-F Table ........................ 2.01
10-year IDF..... 10-yr
I-D-F Table ........................ 2.01
25-year IDF..... 25-yr
I-D-F Table ........................ 2.02
100-year IDF.... 100-yr
I-D-F Table ........................ 2.02
********************** TC CALCULATIONS *t*******************
DA POND 1 WEST.. PRE
Tc Calcs ........................... 3.01
DA POND 1 WEST.. POST
Tc Calcs ........................... 3.03
*********************** POND VOLUMES ***********************
POND 1 WEST..... Vol: Elev-Area ..................... 4.01
******************** OUTLET STRUCTURES *********************
Outlet A........ Outlet Input Data .................. 5.01
Composite Rating Curve ............. 5.03
S114: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##1 WEST
Table of Contents ii
Table of Contents (continued)
Outlet B........ Outlet Input Data .................. 5.06
Composite Rating Curve ............. 5.09
POND 1 WEST..... Multiple Outfall Rating Curves ..... 5.12
*********************** POND ROUTING ***********************
POND 1 WEST..... Pond E-V-Q Table ................... 6.01
****************** RATIONAL METHOD CALCS *******************
DA POND 1 WEST.. PRE
C and Area ......................... 7.01
DA POND 1 WEST.. 1-yr
Mod. Rational Storm Calcs .......... 7.02
DA POND 1 WEST.. POST
C and Area ......................... 7.03
DA POND 1 WEST.. 10-yr
Mod. Rational Storm Calcs .......... 7.04
DA POND 1 WEST.. 25-yr
Mod. Rational Storm Calcs .......... 7.05
DA POND 1 WEST.. 100-yr
Mod. Rational Storm Calcs .......... 7.06
SIN: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 3:16 Pfd
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Mod. Rational Grand Summary Page 1.01
Name.... Watershed
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
************************************************************************
************************************************************************
* *
* *
* MODIFIED RATIONAL METHOD
* ---- Grand Summary For All Storm Frequencies ----
* *
* *
************************************************************************
************************************************************************
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)

.......
......... Area =
......... 17.100 acres
............
...... Tc
............... = .0833
........ hrs
..........
....... ......... ......... ............ ...... ............... ..................
VOLUMES
Freq. Adjusted Duration I Qpeak Allowable) Inflow Storage
years
------- 'C'
--------- hrs
--------- in/hr
------------ cfs
------ cfs I
----------- --- ac-ft
-------- ac-ft
----------
1 .467 .6500 2.1160 17.03 15.40 .915 .448
10 .467 .6000 3.3747 27.16 22.12 1.347 .722
25 .467 .6167 3.8869 31.28 25.19 1.594 .866
100 .467 .6000 4.8010 38.64 30.04 1.916 1.068
SIN: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 3:16 PM
Date: 1/29/2004 1
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #$1 WEST
Type.... Master Network Summary Page 1.02
Name.... Watershed
File.... K:103103-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
MASTER DESIGN STORM SUMMARY
Default Network Design Storm File, ID Wake Co IDF Stor
Rainfall
Return Event Type IDF ID
------------ --------------- ----------------
1-yr I-D-F Curve 1-year IDF
10-yr I-D-F Curve 10-year IDF
25-yr I-D-F Curve 25-year IDF
100-yr I-D-F Curve 100-year IDF
MASTER NETWORK SUM14ARY
Modified Rational Method Network
(*Node=Outfall; +14ode=Diversion;)
(Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt)
Max
Return HYG Vol Qpeak Qpeak Max WSEL Pond Storage
Node ID Type Event --ac-ft Trun ---hrs--- --cfs--- ---ft--- ac-ft
- -
DA POND 1 WEST AREA 1 .915 .0833 17.03
DA POND 1 WEST AREA 10 1.346 .0833 27.16
DA POND 1 WEST AREA 25 1.594 .0833 31.28
DA POND 1 WEST AREA 100 1.915 .0833 38.64
*OUT 1 WEST JCT 1 .102 .7200 3.09
*OUT 1 WEST JCT 10 .518 .6500 9.32
OUT 1 WEST JCT 25 .759 .6700 11.31
*OUT 1 WEST JCT 100 1.073 .6500 15.13
*OUT LS JCT 1 .414 .6800 .30
*OUT LS JCT 10 .421 .6100 .33
*OUT LS JCT 25 .424 .6500 .35
*OUT LS JCT 100 .427 .6300 .37
SIN: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 3:16 Pi4
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Master Network Summary Page 1.03
Name.... Watershed
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
MASTER NETWORK SUMMARY
Modified Rational Method Network
(*Node=Outfall; +Node=Diversion;)
(Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt)
Max
Return HYG Vol Qpeak Qpeak Max WSEL Pond Storage
Node
----- ID
--------
---- Type
---- Event
------ ac-ft Trun
---------- -- hrs
--------- cfs
-------- ft
-------- ac-ft
------------
POND 1 WEST IN POND 1 .914 .0900 17.03
POND 1 WEST IN POND 10 1.346 .0900 27.16
POND 1 WEST IN POND 25 1.594 .0900 31.28
POND 1 WEST IN POND 100 1.915 .0900 38.64
+POND 1 WEST OUT POND 1 .516 .7200 3.38 353.32 1.459
+POND 1 WEST OUT POND 10 .939 .6500 9.66 354.19 1.767
+POND 1 WEST OUT POND 25 1.183 .6700 11.67 354.63 1.939
+POND 1 WEST OUT POND 100 1.500 .6500 15.51 355.20 2.176
S/N: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... I-D-F Table
Name.... 1-year IDF Tag: 1-yr
File....
Storm... K:\03\03-300\03300\H&H\PondPack\
1-year IDF Tag: 1-yr
Rainfall-Intensity-Duration Curve
Time, hrs Intens., in/hr
-----------
.0830 -----------
5.1000
.1670 4.2000
.2500 3.5000
.3330
.5000 3.0000
2.3800
1.0000 1.5000
2.0000 .8900
3.0000 .6500
6.0000 .3830
12.0000 .2330
24.0000 .1250

Type.... I-D-F Table
Name....
File.... 10-year IDF
K:\03\03-300\03300 Tag: 10-yr
\H&H\PondPack\
Storm... 10-year IDF Tag: 10-yr
Rainfall-Inte nsity-Duration Curve
Time, hrs Intens., in/hr
-----------
0830 -----------
7.2200
.1670 6.1300
.2500
.3300 5.2500
4.6400
.5000 3.7100
.6670 3.1500
.8330 2.7100
1.0000 2.4100
1.5000 1.7400
2.0000
3.0000 1.3700
1.0200
6.0000 .6500
12.0000 .3900
24.0000 .2200

SIN: 22160372E 1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 P14

Page 2.01
Event: 1 yr
Event: 10 yr
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##1 WEST
Type.... I-D-F Table Page 2.02
Name.... 25-year IDF Tag: 25-yr Event: 25 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 25-year IDF Tag: 25-yr
Rainfall-Intensity-Duration Curve
Time, hrs
----------- Intens., in/hr
-----------
.0830 8.1900
.1670 7.0100
.2500 6.0300
.3300 5.4200
.5000 4.3200
.6670 3.7000
.8330 3.1900
1.0000 2.8400
1.5000 2.0600
2.0000 1.6200
3.0000 1.2100
6.0000 .7700
12.0000 .4600
24.0000 .2700
Type.... I-D-F Table
Name.... 100-year IDF Tag: 100-yr Event: 100 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 100-year IDF Tag: 100-yr
Rainfall-Intensity-Duration Curve
Time, hrs
----------- Intens., in/hr
-----------
.0830 9.7200
.1670 8.4000
.2500 7.2400
.3330 6.4700
.5000 5.2800
.6670 4.4800
.8330 3.8800
1.0000 3.5000
1.5000 2.5300
2.0000 2.0000
3.0000 1.5000
6.0000 .9600
12.0000 .5700
24.0000 .3300
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND Ill WEST
Type.... Tc Calcs Page 3.01
Name.... DA POND 1 WEST Tag: PRE
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
TIME OF CONCENTRATION CALCULATOR
Segment #1: Tc: Kirpich (TN)
Hydraulic Length 1460.00 ft
Slope .036500 ft/ft
Multiplier 1.000 (Tc Adjustment)
Avg.Velocity 3.19 ft/sec
Segment #1 Time: .1271 hrs
------------------------------------------------------------------------
Total Tc: .1271 hrs
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 PI4 Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #l1 WEST
Type.... Tc Calcs Page 3.02
Name.... DA POND 1 WEST Tag: PRE
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
------------------------------------------------------------------------
Tc Equations used...
------------------------------------------------------------------------
Kirpich (TN)
Tc = 0.00013 * (Lf**0.77) * (Sf**-0.385) * Mt
Where: Tc = Time of concentration, hrs
Lf = Flow length, ft
Sf = Slope, ft/ft
Mt = Tc Multiplier (Tc adjustment)
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 Phi Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Tc Calcs Page 3.03
Name.... DA POND 1 WEST Tag: POST
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
TIME OF CONCENTRATION CALCULATOR
Segment #1: Tc: User Defined
Segment #1 Time: .0833 hrs
------------------------------------------------------------------------
Total Tc: .0833 hrs
Calculated Tc < Min.Tc:
Use Minimum Tc...
Use Tc = .0833 hrs
-------------------------
S/:d: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 3:16 P14
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Vol: Elev-Area Page 4.01
Name.... POND 1 WEST
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
Elevation Planimeter Area Al+A2+sgr(Al*A2) Volume Volume Sum
(ft)
------------ (sq.in) (acres)
--------------------- (acres)
---------------- (ac-ft)
---------- (ac-ft)
-------------
346.00 ----- .0935 .0000 .000 .000
348.00 ----- .1426 .3516 .234 .234
350.00 ----- .2028 .5155 .344 .578
352.00 ----- .2767 .7164 .478 1.056
354.00 ----- .3669 .9622 .641 1.697
356.00 ----- .4735 1.2572 .838 2.535
POND VOLUME EQUATIONS
* Incremental volume computed by the Conic Method for Reservoir Volumes.
Volume = (1/3) * (EL2-EL1) * (Areal + Areal + sq.rt.(Areal*Area2))
where: EL1, EL2 = Lower and upper elevations of the increment
Areal,Area2 = Areas computed for EL1, EL2, respectively
Volume = Incremental volume between EL1 and EL2
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 PM Date: 1/29/2004
GARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Outlet Input Data Page 5.01
Name.... Outlet A
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
REQUESTED POND WS ELEVATIONS:
Min. Elev.= 346.00 ft
Increment = .10 ft
Max. Elev.= 356.00 ft
OUTLET CONNECTIVITY
---> Forward Flow Only (UpStream to DnStream)
<--- Reverse Flow Only (DnStream to UpStream)
<---> Forward and Reverse Both Allowed
Structure No. Outfall E1, ft E2, ft
----------------- ---- ------- --------- ---------
Orifice-Area 02 ---> TW 350.000 356.000
TW SETUP, DS Channel
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 P14 Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Outlet Input Data Page 5.02
Name.... Outlet A
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
OUTLET STRUCTURE INPUT DATA
Structure ID = 02
Structure Type = Orifice-Area
-----------------
# of Openings -------------
= 1 ------
Invert Elev. = 350.00 ft
Area = .0341 sq.ft
Top of Orifice = .00 ft
Datum Elev. = 350.00 ft
Orifice Coeff. _ .600
Structure ID = TW
Structure Type = TW SETUP, DS Channel
------------------------------------
FREE OUTFALL CONDITIONS SPECIFIED
CONVERGENCE TOLERANCES...
Maximum Iterations= 30
Min. TW tolerance = .01 ft
Max. TW tolerance = .01 ft
Min. HW tolerance = .01 ft
Max. HW tolerance = .01 ft
Min. Q tolerance = .10 cfs
Max. Q tolerance = .10 cfs
s/N: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 P14 Date: 1/29/2009
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Composite Rating Curve
Name.... Outlet A
Page 5.03
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
WS Elev, Total Q Notes
-------- -------- ----- --- Converge --- ----------------------
Elev. Q TW Elev Error
ft cfs ft +/-ft Contributing Structures
-
-
--------
346.00 -------
.00 -----
Free --- -----
Outfall ----
None -----------------
---
contributing
346.10 .00 Free Outfall None contributing
346.20 .00 Free Outfall None contributing
346.30 .00 Free Outfall None contributing
346.40 .00 Free Outfall None contributing
346.50 .00 Free Outfall None contributing
346.60 .00 Free Outfall None contributing
346.70 .00 Free Outfall None contributing
346.80 .00 Free Outfall None contributing
346.90 .00 Free Outfall None contributing
347.00 .00 Free Outfall None contributing
347.10 .00 Free Outfall None contributing
347.20 .00 Free Outfall None contributing
347.30 .00 Free Outfall None contributing
347.40 .00 Free Outfall None contributing
347.50 .00 Free Outfall None contributing
347.60 .00 Free Outfall None contributing
347.70 .00 Free Outfall None contributing
347.80 .00 Free Outfall None contributing
347.90 .00 Free Outfall None contributing
348.00 .00 Free Outfall None contributing
348.10 .00 Free Outfall None contributing
348.20 .00 Free Outfall None contributing
348.30 .00 Free Outfall None contributing
348.40 .00 Free Outfall None contributing
348.50 .00 Free Outfall None contributing
348.60 .00 Free Outfall None contributing
348.70 .00 Free Outfall None contributing
348.80 .00 Free Outfall None contributing
348.90 .00 Free Outfall None contributing
349.00 .00 Free Outfall None contributing
349.10 .00 Free Outfall None contributing
349.20 .00 Free Outfall None contributing
349.30 .00 Free Outfall None contributing
349.40 .00 Free Outfall None contributing
349.50 .00 Free Outfall None contributing
349.60 .00 Free Outfall None contributing
349.70 .00 Free Outfall None contributing
S/17: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 PI4 Date: 1/29/2004
GARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##1 WEST
Type.... Composite Rating Curve
Name.... Outlet A
Page 5.04
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
WS Elev, Total Q Notes
-------- -------- ----- --- Converg e ---- ---------------------
Elev. Q TW Elev Error
ft cfs ft +/-ft Contributing Structures
-------------------
-
--------
349.80 -------
.00 -----
Free --- -----
Outfall -----
None -
contributing
349.90 .00 Free Outfall None contributing
350.00 .00 Free Outfall 02
350.10 .05 Free Outfall 02
350.20 .07 Free Outfall 02
350.30 .09 Free Outfall 02
350.40 .10 Free Outfall 02
350.50 .12 Free Outfall 02
350.60 .13 Free Outfall 02
350.70 .14 Free Outfall 02
350.80 .15 Free Outfall 02
350.90 .16 Free Outfall 02
351.00 .16 Free Outfall 02
351.10 .17 Free Outfall 02
351.20 .18 Free Outfall 02
351.30 .19 Free Outfall 02
351.40 .19 Free Outfall 02
351.50 .20 Free Outfall 02
351.60 .21 Free Outfall 02
351.70 .21 Free Outfall 02
351.80 .22 Free Outfall 02
351.90 .23 Free Outfall 02
352.00 .23 Free Outfall 02
352.10 .24 Free Outfall 02
352.20 .24 Free Outfall 02
352.30 .25 Free Outfall 02
352.40 .25 Free Outfall 02
352.50 .26 Free Outfall 02
352.60 .26 Free Outfall 02
352.70 .27 Free Outfall 02
352.80 .27 Free Outfall 02
352.90 .28 Free Outfall 02
353.00 .28 Free Outfall 02
353.10 .29 Free Outfall 02
353.20 .29 Free Outfall 02
353.30 .30 Free Outfall 02
353.40 .30 Free Outfall 02
353.50 .31 Free Outfall 02
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Composite Rating Curve Page 5.05
Name.... Outlet A
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
WS Elev, Total Q Notes
-------- --------
------
-- Converge
-------------------------
Elev. Q TW Elev Error
ft cfs ft
-- +/-ft
-- ----- Contributing Structures
--------------------------
--------
353.60 -------
.31 ----
Free Outfall 02
353.70 .32 Free Outfall 02
353.80 .32 Free Outfall 02
353.90 .32 Free Outfall 02
354.00 .33 Free Outfall 02
354.10 .33 Free Outfall 02
354.20 .34 Free Outfall 02
354.30 .34 Free Outfall 02
354.40 .34 Free Outfall 02
354.50 .35 Free Outfall 02
354.60 .35 Free Outfall 02
354.70 .36 Free Outfall 02
354.80 .36 Free Outfall 02
354.90 .36 Free Outfall 02
355.00 .37 Free Outfall 02
355.10 .37 Free Outfall 02
355.20 .37 Free Outfall 02
355.30 .38 Free Outfall 02
355.40 .38 Free Outfall 02
355.50 .38 Free Outfall 02
355.60 .39 Free Outfall 02
355.70 .39 Free Outfall 02
355.80 .40 Free Outfall 02
355.90 .40 Free Outfall 02
356.00 .40 Free Outfall 02
SIN: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 3:16 P14
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##1 WEST
Type.... Outlet Input Data Page 5.06
Name.... Outlet B
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
REQUESTED POND WS ELEVATIONS:
Min. Elev.= 346.00 ft
Increment = .10 ft
Max. Elev.= 356.00 ft
**********************************************
OUTLET CONNECTIVITY
---> Forward Flow Only (UpStream to DnStream)
<--- Reverse Flow Only (DnStream to UpStream)
<---> Forward and Reverse Both Allowed
Structure No. Outfall E1, ft E2, ft
----------------- ---- ------- --------- ---------
Inlet Box RI ---> CV 355.100 356.000
Orifice-Area OR ---> CV 353.000 356.000
Culvert-Circular CV ---> TW 346.000 356.000
TW SETUP, DS Channel
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Outlet Input Data Page 5.07
Name.... Outlet B
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
OUTLET STRUCTURE INPUT DATA
Structure ID = RI
Structure Type
- = Inlet Box
-------------
------
----------------
# of Openings = 1
Invert Elev. = 355.10 ft
Orifice Area = 16.0000 sq.ft
Orifice Coeff. _ .600
Weir Length = 16.00 ft
Weir Coeff. = 3.100
K, Submerged = .000
K, Reverse = 1.000
Kb,Barrel = .000000 (per ft of full flow)
Barrel Length = .00 ft
Mannings n = .0000
Structure ID = OR
Structure Type = Orifice-Area
----------------
-----------------
# of Openings ---
= 2
Invert Elev. = 353.00 ft
Area = 1.0000 sq.ft
Top of Orifice = 353.50 ft
Datum Elev. = 353.25 ft
Orifice Coeff. _ .600
Withers & Ravenel
Time: 3:16 PM
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Outlet Input Data Page 5.08
Name.... Outlet B
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
OUTLET STRUCTURE INPUT DATA
Structure ID = CV
Structure Type
- = Culvert-Circular
------------
----
No. Barrels ------------
= 1 -------
Barrel Diameter = 2.0000 ft
Upstream Invert = 346.00 ft
Dnstream Invert = 345.00 ft
Horiz. Length = 120.00 ft
Barrel Length = 120.00 ft
Barrel Slope = .00833 ft/ft
OUTLET CONTROL DATA...
Mannings n = .0130
Ke = .5000
Kb = .012411
Kr = .5000
HW Convergence = .001
(forward entrance loss)
(per ft of full flow)
(reverse entrance loss)
+/- ft
INLET CONTROL DATA...
Equation form = 1
Inlet Control K = .0098
Inlet Control M = 2.0000
Inlet Control c = .03980
Inlet Control Y = .6700
T1 ratio (HW/D) = 1.156
T2 ratio (HW/D) = 1.303
Slope Factor = -.500
Use unsubmerged inlet control Form 1 equ. below T1 elev.
Use submerged inlet control Form 1 equ. above T2 elev.
In transition zone between unsubmerged and submerged inlet control,
interpolate between flows at T1 & T2...
At Tl Elev = 348.31 ft ---> Flow = 15.55 cfs
At T2 Elev = 348.61 ft ---> Flow = 17.77 cfs
Structure ID = TW
Structure Type = TW SETUP, DS Channel
------------------------------------
FREE OUTFALL CONDITIONS SPECIFIED
CONVERGENCE TOLERANCES ...
Maximum Iterations= 30
Min. TW tolerance = .01 ft
Max. TW tolerance = .01 ft
Min. HW tolerance = .01 ft
Max. HW tolerance = .01 ft
Min. Q tolerance = .10 cfs
Max. Q tolerance = .10 cfs
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Composite Rating Curve
Name.... Outlet B
Page 5.09
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
WS Elev, Total Q Notes
-------- --------
------
-- Converge
-----
---
-----------------
Elev. Q TW El ev Error
ft cfs ft +/-ft
----- Contributing Structures
--------------------------
--------
346.00 -------
.00 ------
Free --
Outfall (no Q: RI,OR,CV)
346.10 .00 Free Outfall (no Q: RI,OR,CV)
346.20 .00 Free Outfall (no Q: RI,OR,CV)
346.30 .00 Free Outfall (no Q: RI,OR,CV)
346.40 .00 Free Outfall (no Q: RI,OR,CV)
346.50 .00 Free Outfall (no Q: RI,OR,CV)
346.60 .00 Free Outfall (no Q: RI,OR,CV)
346.70 .00 Free Outfall (no Q: RI,OR,CV)
346.80 .00 Free Outfall (no Q: RI,OR,CV)
346.90 .00 Free Outfall (no Q: RI,OR,CV)
347.00 .00 Free Outfall (no Q: RI,OR,CV)
347.10 .00 Free Outfall (no Q: RI,OR,CV)
347.20 .00 Free Outfall (no Q: RI,OR,CV)
347.30 .00 Free Outfall (no Q: RI,OR,CV)
347.40 .00 Free Outfall (no Q: RI,OR,CV)
347.50 .00 Free Outfall (no Q: RI,OR,CV)
347.60 .00 Free Outfall (no Q: RI,OR,CV)
347.70 .00 Free Outfall (no Q: RI,OR,CV)
347.80 .00 Free Outfall (no Q: RI,OR,CV)
347.90 .00 Free Outfall (no Q: RI,OR,CV)
348.00 .00 Free Outfall (no Q: RI,OR,CV)
348.10 .00 Free Outfall (no Q: RI,OR,CV)
348.20 .00 Free Outfall (no Q: RI,OR,CV)
348.30 .00 Free Outfall (no Q: RI,OR,CV)
348.40 .00 Free Outfall (no Q: RI,OR,CV)
348.50 .00 Free Outfall (no Q: RI,OR,CV)
348.60 .00 Free Outfall (no Q: RI,OR,CV)
348.70 .00 Free Outfall (no Q: RI,OR,CV)
348.80 .00 Free Outfall (no Q: RI,OR,CV)
348.90 .00 Free Outfall (no Q: RI,OR,CV)
349.00 .00 Free Outfall (no Q: RI,OR,CV)
349.10 .00 Free Outfall (no Q: RI,OR,CV)
349.20 .00 Free Outfall (no Q: RI,OR,CV)
349.30 .00 Free Outfall (no Q: RI,OR,CV)
349.40 .00 Free Outfall (no Q: RI,OR,CV)
349.50 .00 Free Outfall (no Q: RI,OR,CV)
349.60 .00 Free Outfall (no Q: RI,OR,CV)
349.70 .00 Free Outfall (no Q: RI,OR,CV)
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 PIA Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Composite Rating Curve
Name.... Outlet B
Page 5.10
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
WS Elev, Total Q Notes
-------- -------- ----- --- Converge ----- -- ------------------
Elev. Q TW Elev Error
ft cfs ft +/-ft
---
--
- Contrib
-------- uting Structures
-----
-------
--------
349.80 -------
.00 -
-
Free - --
--
Outfall (no Q: ------
RI,OR,CV)
349.90 .00 Free Outfall (no Q: RI,OR,CV)
350.00 .00 Free Outfall (no Q: RI,OR,CV)
350.10 .00 Free Outfall (no Q: RI,OR,CV)
350.20 .00 Free Outfall (no Q: RI,OR,CV)
350.30 .00 Free Outfall (no Q: RI,OR,CV)
350.40 .00 Free Outfall (no Q: RI,OR,CV)
350.50 .00 Free Outfall (no Q: RI,OR,CV)
350.60 .00 Free Outfall (no Q: RI,OR,CV)
350.70 .00 Free Outfall (no Q: RI,OR,CV)
350.80 .00 Free Outfall (no Q: RI,OR,CV)
350.90 .00 Free Outfall (no Q: RI,OR,CV)
351.00 .00 Free Outfall (no Q: RI,OR,CV)
351.10 .00 Free Outfall (no Q: RI,OR,CV)
351.20 .00 Free Outfall (no Q: RI,OR,CV)
351.30 .00 Free Outfall (no Q: RI,OR,CV)
351.40 .00 Free Outfall (no Q: RI,OR,CV)
351.50 .00 Free Outfall (no Q: RI,OR,CV)
351.60 .00 Free Outfall (no Q: RI,OR,CV)
351.70 .00 Free Outfall (no Q: RI,OR,CV)
351.80 .00 Free Outfall (no Q: RI,OR,CV)
351.90 .00 Free Outfall (no Q: RI,OR,CV)
352.00 .00 Free Outfall (no Q: RI,OR,CV)
352.10 .00 Free Outfall (no Q: RI,OR,CV)
352.20 .00 Free Outfall (no Q: RI,OR,CV)
352.30 .00 Free Outfall (no Q: RI,OR,CV)
352.40 .00 Free Outfall (no Q: RI,OR,CV)
352.50 .00 Free Outfall (no Q: RI,OR,CV)
352.60 .00 Free Outfall (no Q: RI,OR,CV)
352.70 .00 Free Outfall (no Q: RI,OR,CV)
352.80 .00 Free Outfall (no Q: RI,OR,CV)
352.90 .00 Free Outfall (no Q: RI,OR,CV)
353.00 .00 Free Outfall (no Q: RI,OR,CV)
353.10 .96 Free Outfall OR,CV (no Q: RI)
353.20 1.93 Free Outfall OR,CV (no Q: RI)
353.30 2.89 Free Outfall OR,CV (no Q: RI)
353.40 3.85 Free Outfall OR,CV (no Q: RI)
353.50 4.81 Free Outfall OR,CV (no Q: RI)
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 P14 Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##1 WEST
Type.... Composite Rating Curve
Name.... Outlet B
Page 5.11
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
J
7
d J6

WS Elev, Total Q Notes
-------- --------
------
-- Converge
-----------
--
------------
Elev. Q TW El ev Error
ft cfs ft +/-ft
---- - Contributing
------------- Structures
------------
--------
353.60 -------
5.69 ------
Free -- -
Outfall OR,CV (no Q: RI)
353.70 6.46 Free Outfall OR,CV (no Q: RI)
353.80 7.14 Free Outfall OR,CV (no Q: RI)
353.90 7.76 Free Outfall OR,CV (no Q: RI)
354.00 8.34 Free Outfall OR,CV (no Q: RI)
354.10 8.87 Free Outfall OR,CV (no Q: RI)
354.20 9.38 Free Outfall OR,CV (no Q: RI)
354.30 9.86 Free Outfall OR,CV (no Q: RI)
354.40 10.32 Free Outfall OR,CV (no Q: RI)
354.50 10.76 Free Outfall OR,CV (no Q: RI)
354.60 11.18 Free Outfall OR,CV (no Q: RI)
354.70 11.59 Free Outfall OR,CV (no Q: RI)
354.80 11.98 Free Outfall OR,CV (no Q: RI)
354.90 12.36 Free Outfall OR,CV (no Q: RI)
355.00 12.73 Free Outfall OR,CV (no Q: RI)
355.10 13.09 Free Outfall OR,CV (no Q: RI)
355.20 15.01 Free Outfall RI,OR,CV
355.30 18.22 Free Outfall RI,OR,CV
355.40 22.26 Free Outfall RI,OR,CV
355.50 26.99 Free Outfall RI,OR,CV
355.60 32.29 Free Outfall RI,OR,CV
355.70 37.28 Free Outfall RI,OR,CV
355.80 39.97 Free Outfall RI,OR,CV
355.90 43.51 Free Outfall RI,CV (no Q: OR)
356.00 43.75 Free Outfall RI,CV (no Q: OR)
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 P14 Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Multiple Outfall Rating Curves
Name.... POND 1 WEST
File.... K:\03\03-300\03300\H&H\PondP ack\
TOTAL POND OUTFLOW CURVE FOR MULTIPLE OUTFALLS
Contributing Outfalls:
Outfall 1: ROUTE 1W 1-yr (Outlet B)
Outfall 2: ROUTE 1 LS 1-yr (Outlet A)
POND HW OUTFALL 1 OUTFALL 2 TOTAL
Elev, ft Flow, cfs Flow, cfs Flow, cfs
-
---------
346.00 ---------
.00 ---------
.00 -
-------
.00
346.10 .00 .00 .00
346.20 .00 .00 .00
346.30 .00 .00 .00
346.40 .00 .00 .00
346.50 .00 .00 .00
346.60 .00 .00 .00
346.70 .00 .00 .00
346.80 .00 .00 .00
346.90 .00 .00 .00
347.00 .00 .00 .00
347.10 .00 .00 .00
347.20 .00 .00 .00
347.30 .00 .00 .00
347.40 .00 .00 .00
347.50 .00 .00 .00
347.60 .00 .00 .00
347.70 .00 .00 .00
347.80 .00 .00 .00
347.90 .00 .00 .00
348.00 .00 .00 .00
348.10 .00 .00 .00
348.20 .00 .00 .00
348.30 .00 .00 .00
348.40 .00 .00 .00
348.50 .00 .00 .00
348.60 .00 .00 .00
348.70 .00 .00 .00
348.80 .00 .00 .00
348.90 .00 .00 .00
349.00 .00 .00 .00
349.10 .00 .00 .00
349.20 .00 .00 .00
349.30 .00 .00 .00
349.40 .00 .00 .00
349.50 .00 .00 .00
349.60 .00 .00 .00
349.70 .00 .00 .00
349.80 .00 .00 .00
349.90 .00 .00 .00
350.00 .00 .00 .00
350.10 .00 .05 .05
350.20 .00 .07 .07
350.30 .00 .09 .09
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 PM
Page 5.12
Date: 1/29/2004 1
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Multiple Outfall Rating Curves
Name.... POND 1 WEST
File.... K:\03\03-300\03300\H&11\PondPack\
TOTAL POND OUTFLOW CURVE FOR MULTIPLE OUTFALLS
Contributing Outfalls:
Outfall 1: ROUTE 1W 1-yr (Outlet B)
Outfall 2: ROUTE 1 LS 1-yr (Outlet A)
POND HW OUTFALL 1 OUTFALL 2 TOTAL
Elev, ft Flow, cfs Flow
---- , cfs
----- Flow, cfs
---------
---------
350.40 ---------
.00 .10 .10
350.50 .00 .12 .12
350.60 .00 .13 .13
350.70 .00 .14 .14
350.80 .00 .15 .15
350.90 .00 .16 .16
351.00 .00 .16 .16
351.10 .00 .17 .17
351.20 .00 .18 .18
351.30 .00 .19 .19
351.40 .00 .19 .19
351.50 .00 .20 .20
351.60 .00 .21 .21
351.70 .00 .21 .21
351.80 .00 .22 .22
351.90 .00 .23 .23
352.00 .00 .23 .23
352.10 .00 .24 .24
352.20 .00 .24 .24
352.30 .00 .25 .25
352.40 .00 .25 .25
352.50 .00 .26 .26
352.60 .00 .26 .26
352.70 .00 .27 .27
352.80 .00 .27 .27
352.90 .00 .28 .28
353.00 .00 .28 .28
353.10 .96 .29 1.25
353.20 1.93 .29 2.22
353.30 2.89 .30 3.19
353.40 3.85 .30 4.15
353.50 4.81 .31 5.12
353.60 5.69 .31 6.01
353.70 6.46 .32 6.77
353.80 7.14 .32 7.46
353.90 7.76 .32 8.08
354.00 8.34 .33 8.66
354.10 8.87 .33 9.21
354.20 9.38 .34 9.72
354.30 9.86 .34 10.20
354.40 10.32 .34 10.67
354.50 10.76 .35 11.11
354.60 11.18 .35 11.54
354.70 11.59 .36 11.95
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 PM
Page 5.13
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Multiple Outfall Rating Curves
Name.... POND 1 WEST
File.... K:\03\03-300\03300\H&H\PondP ack\
TOTAL POND OUTFLOW CURVE FOR MULTIPLE OUTFALLS
Contributin g Outfalls:
Outfall 1: ROUTE 1W 1-yr (Outlet B)
Outfall 2: ROUTE 1 LS 1-yr (Outlet A)
POND HW OUTFALL 1 OUTFALL 2 TOTAL
Elev, ft
--------- Flow, cfs
--------- Flow, cfs
-
--
- Flow, cfs

354.80
11.98 -
--
--
.36 ---------
12.34
354.90 12.36 .36 12.73
355.00 12.73 .37 13.10
355.10 13.09 .37 13.46
355.20 15.01 .37 15.39
355.30 18.22 .38 18.60
355.40 22.26 .38 22.65
355.50 26.99 .38 27.37
355.60 32.29 .39 32.68
355.70 37.28 .39 37.67
355.80 39.97 .40 40.37
355.90 43.51 .40 43.91
356.00 43.75 .40 44.16
Page 5.14
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 PM Date: 1/29/2004
41

CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #l WEST
Type.... Pond E-V-Q Table Page 6.01
Name.... POND 1 WEST
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\03\03-300\03300\H&H\PondPack\
Inflow HYG file = NONE STORED - POND 1 WEST IN 1-yr
Outflow HYG file = NONE STORED - POND 1 WEST OUT 1-yr
Pond Node Data = POND 1 WEST
Pond Volume Data = POND 1 WEST
Pond Outlet Data = Outlet B
Outlet A
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 350.00 ft
Starting Volume = .578 ac-ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Increment = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + O
ft cfs ac-ft acres cfs
----- cfs
------------ cfs
----------
------------
346.00 -------------
.00 --------
.000 ------------
.0935 ------
.00 .00 .00
346.10 .00 .009 .0957 .00 .00 22.90
346.20 .00 .019 .0979 .00 .00 46.33
346.30 .00 .029 .1002 .00 .00 70.30
346.40 .00 .039 .1025 .00 .00 94.83
346.50 .00 .050 .1048 .00 .00 119.91
346.60 .00 .060 .1071 .00 .00 145.56
346.70 .00 .071 .1095 .00 .00 171.77
346.80 .00 .082 .1119 .00 .00 198.56
346.90 .00 .093 .1143 .00 .00 225.93
347.00 .00 .105 .1168 .00 .00 253.89
347.10 .00 .117 .1192 .00 .00 282.45
347.20 .00 .129 .1217 .00 .00 311.61
347.30 .00 .141 .1242 .00 .00 341.36
347.40 .00 .154 .1268 .00 .00 371.73
347.50 .00 .166 .1294 .00 .00 402.73
347.60 .00 .179 .1320 .00 .00 434.35
347.70 .00 .193 .1346 .00 .00 466.60
347.80 .00 .206 .1372 .00 .00 499.48
347.90 .00 .220 .1399 .00 .00 533.01
5117: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 3:16 PM
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Pond E-V-Q Table Page 6.02
Name.... POND 1 WEST
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\03\03-300\03300\H&H\PondPack\
Inflow HYG file = NONE STORED - POND 1 WEST IN 1-yr
Outflow HYG file = NONE STORED - POND 1 WEST OUT 1-yr
Pond Node Data = POND 1 WEST
Pond Volume Data = POND 1 WEST
Pond Outlet Data = Outlet B
Outlet A
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 350.00 ft
Starting Volume = .578 ac-ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Increment = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + 0
ft cfs ac-ft acres cfs cfs cfs
-------------
348.00 -----------
.00 ----------
.234 -----------
.1426 -----------
.00 ------------
.00 ----------
567.20
348.10 .00 .249 .1454 .00 .00 602.04
348.20 .00 .263 .1481 .00 .00 637.56
348.30 .00 .278 .1510 .00 .00 673.74
348.40 .00 .294 .1538 .00 .00 710.62
348.50 .00 .309 .1567 .00 .00 748.18
348.60 .00 .325 .1596 .00 .00 786.45
348.70 .00 .341 .1625 .00 .00 825.41
348.80 .00 .357 .1654 .00 .00 865.08
348.90 .00 .374 .1684 .00 .00 905.47
349.00 .00 .391 .1714 .00 .00 946.58
349.10 .00 .408 .1744 .00 .00 988.42
349.20 .00 .426 .1775 .00 .00 1031.00
349.30 .00 .444 .1805 .00 .00 1074.30
349.40 .00 .462 .1836 .00 .00 1118.37
349.50 .00 .481 .1868 .00 .00 1163.19
349.60 .00 .499 .1899 .00 .00 1208.77
349.70 .00 .519 .1931 .00 .00 1255.11
349.80 .00 .538 .1963 .00 .00 1302.22
349.90 .00 .558 .1995 .00 .00 1350.12
5/N: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Pond E-V-Q Table Page 6.03
J
Name.... POND 1 WEST
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\03\03-300\03300\H&H\PondPack\
Inflow 11YG file = NONE STORED - POND 1 WEST IN 1-yr
Outflow HYG file = NONE STORED - POND 1 WEST OUT 1-yr
Pond Node Data = POND 1 WEST
Pond Volume Data = POND 1 WEST
Pond Outlet Data = Outlet B
Outlet A
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 350.00 ft
Starting Volume = .578 ac-ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Increment = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + 0
ft
----- cfs ac-ft acres cfs cfs
- cfs
-
--------
350.00 -----------
.00 ----------
.578 -----------
.2028 -----------
.00 -----------
.00 ---------
1398.80
350.10 .05 .598 .2062 .00 .05 1448.35
350.20 .07 .619 .2097 .00 .07 1498.70
350.30 .09 .640 .2132 .00 .09 1549.86
350.40 .10 .662 .2167 .00 .10 1601.89
350.50 .12 .684 .2202 .00 .12 1654.76
350.60 .13 .706 .2238 .00 .13 1708.50
350.70 .14 .728 .2274 .00 .14 1763.09
350.80 .15 .751 .2310 .00 .15 1818.55
350.90 .16 .775 .2346 .00 .16 1874.90
351.00 .16 .798 .2383 .00 .16 1932.14
351.10 .17 .822 .2420 .00 .17 1990.27
351.20 .18 .847 .2458 .00 .18 2049.31
351.30 .19 .872 .2495 .00 .19 2109.23
351.40 .19 .897 .2533 .00 .19 2170.09
351.50 .20 .922 .2572 .00 .20 2231.86
351.60 .21 .948 .2610 .00 .21 2294.57
351.70 .21 .974 .2649 .00 .21 2358.21
351.80 .22 1.001 .2688 .00 .22 2422.78
351.90 .23 1.028 .2727 .00 .23 2488.31
8/21: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 P14
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##1 WEST
Type.... Pond E-V-Q Table Page 6.04
Name.... POND 1 WEST
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
LEVEL POOL ROUTING DATA
11YG Dir = K:\03\03-300\03300\H&H\PondPack\
Inflow HYG file = NONE STORED - POND 1 WEST IN 1-yr
Outflow HYG file = NONE STORED - POND 1 WEST OUT 1-yr
Pond Node Data = POND 1 WEST
Pond Volume Data = POND 1 WEST
Pond Outlet Data = Outlet B
Outlet A
No Infiltration
INITIAL CONDITIONS
Starting WS Elev =
Starting Volume =
Starting Outflow =
Starting Infiltr. _
Starting Total Qout=
Time Increment =
-------------
350.00 ft
.578 ac-ft
.00 cfs
.00 cfs
.00 cfs
.0100 hrs
Elevation Outflow Storage
ft cfs ac-ft
-----------
352.00 ------------
.23 ------------
1.056
352.10 .24 1.083
352.20 .24 1.112
352.30 .25 1.141
352.40 .25 1.170
352.50 .26 1.199
352.60 .26 1.229
352.70 .27 1.260
352.80 .27 1.291
352.90 .28 1.322
353.00 .28 1.354
353.10 1.25 1.386
353.20 2.22 1.419
353.30 3.19 1.452
353.40 4.15 1.486
353.50 5.12 1.520
353.60 6.01 1.554
353.70 6.77 1.589
353.80 7.46 1.625
353.90 8.08 1.661
S114: 22160372E1C5
PondPack Ver. 9.0029
Area Infilt. Q Total 2S/t + 0
acres cfs cfs
--- cfs
----------
--------
.2767 -----------
.00 ---------
.23 2554.80
.2809 .00 .24 2622.28
.2851 .00 .24 2690.78
.2894 .00 .25 2760.30
.2937 .00 .25 2830.86
.2981 .00 .26 2902.48
.3024 .00 .26 2975.15
.3068 .00 .27 3048.88
.3113 .00 .27 3123.65
.3157 .00 .28 3199.52
.3202 .00 .28 3276.48
.3247 .00 1.25 3355.49
.3293 .00 2.22 3435.60
.3339 .00 3.19 3516.79
.3385 .00 4.15 3599.12
.3432 .00 5.12 3682.57
.3478 .00 6.01 3767.07
.3526 .00 6.77 3852.60
.3573 .00 7.46 3939.15
.3621 .00 8.08 4026.83
Withers & Ravenel
Time: 3:16 P14
Date: 1/29/2004
GARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Pond E-V-Q Table Page 6.05
Name.... POND 1 WEST
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\03\03-300\03300\H&I1\PondPack\
Inflow HYG file = NONE STORED - POND 1 WEST IN 1-yr
Outflow HYG file = NONE STORED - POND 1 WEST OUT 1-yr
Pond Node Data = POND 1 WEST
Pond Volume Data = POND 1 WEST
Pond Outlet Data = Outlet B
Outlet A
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 350.00 ft
Starting Volume = .578 ac-ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Increment = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + O
ft cfs ac-ft acres cfs cfs
-
----- cfs
----------
------------
354.00 -------------
8.66 ---------
1.697 -----------
.3669 -----------
.00 -----
-
8.66 4115.62
354.10 9.21 1.734 .3719 .00 9.21 4205.57
354.20 9.72 1.771 .3769 .00 9.72 4296.69
354.30 10.20 1.809 .3820 .00 10.20 4388.99
354.40 10.67 1.848 .3871 .00 10.67 4482.53
354.50 11.11 1.887 .3923 .00 11.11 4577.29
354.60 11.54 1.926 .3975 .00 11.54 4673.27
354.70 11.95 1.966 .4027 .00 11.95 4770.51
354.80 12.34 2.007 .4079 .00 12.34 4868.96
354.90 12.73 2.048 .4132 .00 12.73 4968.70
355.00 13.10 2.090 .4185 .00 13.10 5069.71
355.10 13.46 2.132 .4239 .00 13.46 5172.00
355.20 15.39 2.174 .4292 .00 15.39 5277.15
355.30 18.60 2.217 .4346 .00 18.60 5384.87
355.40 22.65 2.261 .4401 .00 22.65 5494.77
355.50 27.37 2.305 .4456 .00 27.37 5606.67
355.60 32.68 2.350 .4511 .00 32.68 5720.48
355.70 37.67 2.396 .4566 .00 37.67 5835.31
355.80 40.37 2.442 .4622 .00 40.37 5949.17
355.90 43.91 2.488 .4678 .00 43.91 6065.25
® 356.00 44.16 2.535 .4735 .00 44.16 6179.41
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 1114
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... C and Area Page 7.01
Name.... DA POND 1 WEST Tag: PRE
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
RATIONAL C COEFFICIENT DATA
.........................................................................
.........................................................................
Area C x Area
Soil/Surface Description C acres acres
-------------------------------- -------- ---------- ----------
Agricultural/Pasture .2200 15.000 3.300
WEIGHTED C & TOTAL AREA ---> .2200 15.000 3.300
.........................................................................
.........................................................................
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 Pit Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##1 WEST
Type.... Mod. Rational Storm Calcs Page 7.02
Name.... DA POND 1 WEST Tag: 1-yr Event: 1 yr
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
Storm... 1-year IDF Tag: 1-yr
MODIFIED RATIONAL METHOD
® ---- Summary for Single Storm Frequency ----
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)
RETURN FREQUENCY: 1 yr 'C' Adjustment = 1.000Allowable Q = 15.40 cfs
----------------------------------------------------------------------------
J
i
?l
Hydrograph Storm Duration, Td = .6500 hrs Tc = .0833 hrs
Hydrog raph File: 1-yr
...... ........... ......... ........... ........ .......... VOLUM ES
Wtd. Adjusted Duration Intens. Area Qpeak I Inflow Storage
'C' 'C' hrs in/hr acres cfs I
-- ac-ft
---------- ac-ft
--------
------
.467 -----------
.467 ---------
.0833 -----------
5.0968 --------
17.100 --------- I -
41.02 1 .282 .177
.467 .467 .1667 4.2036 17.100 33.83 1 .466 .307
.467 .467 .2500 3.5000 17.100 28.17 1 .582 .370
.467 .467 .3333 2.9988 17.100 24.14 1 .665 .400
.467 .467 .5000 2.3800 17.100 19.16 1 .792 .420
****** ******************** ********************************** Storage Maximum
.467 .467 .6500 2.1160 17.100 17.03 1 .915 .448
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
.467 .467 .6667 2.0867 17.100 16.80 1 .925 .448
.467 .467 .8333 1.7933 17.100 14.43 1 Qpeak < Qallow
S117: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 P14 Date: 1/29/2004
GARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##1 WEST
Type.... C and Area Page 7.03
Name.... DA POND 1 WEST Tag: POST
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
RATIONAL C COEFFICIENT DATA
.........................................................................
.........................................................................
Area C x Area
Soil/Surface Description C acres acres
-------------------------------- -------- ---------- ----------
Residential 3 - 4 du/acre .4750 16.550 7.861
Pond Area .2200 .550 .121
WEIGHTED C & TOTAL AREA ---> .4668 17.100 7.982
.........................................................................
.........................................................................
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 P14 Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Mod. Rational Storm Calcs Page 7.04
Name. ... DA POND 1 WEST Tag: 10-yr Event: 10 yr
File. ... K:\03\0 3-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN 04.PPW
Storm ... 10-year IDF Tag: 10-yr
MODIFIED RATIONAL METHOD
- --- Summary for Single Storm Frequency - ---
Q = CiA * U nits Conversion; Where Conversion = 435 60 / (12 * 3600)
RETURN
------ FREQUENCY:
----------- 10 yr 'C' Adjustment = 1.000Allowable
---------------------------------------- Q = 22.12
----------- cfs
--------
Hydrog raph Storm Duration, Td = .6000 hrs Tc = .0833 hrs
Hydrog raph File: 10-yr
...... ........... ........................................ .. VOLUM ES
Wtd. Adjusted Duration Intens. Area Qpeak I Inflow Storage
'C' 'C' hrs in/hr acres cfs I ac-ft ac-ft
------
467 -----------
.467 -------------------------------------I--
.0833 7.2161 17.100 58.08 1 -----------
.400 --------
.248
.467 .467 .1667 6.1343 17.100 49.37 I .680 .452
.467 .467 .2500 5.2500 17.100 42.26 I .873 .568
467 .467 .3333 4.6218 17.100 37.20 1 1.025 .644
.467 .467 .5000 3.7100 17.100 29.86 I 1.234 .701
****** *********** **************************************** *** Storage Maximum
467 .467 .6000 3.3747 17.100 27.16 1 1.347 .722

.467
.467 .467
.467 .6667 3.1511 17.100 25.36 1
.8333 2.7094 17.100 21.81 1 1.397
Qpeak < .712
Qallow
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 PM Date: 1/29/2004
GARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Mod. Rational Storm Calcs Page 7.05
Name.... DA POND 1 WEST Tag: 25-yr Event: 25 yr
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
Storm... 25-year IDF Tag: 25-yr ?4y9,
MODIFIED RATIONAL METHOD
---- Summary for Single Storm Frequency ----
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)
RETURN
------ FREQUENCY:
----------- 25 yr 'C' Adjustment = 1.000Allowable
---------------------------------------- Q = 25.19
----------- cfs
--------
Hydrograph Storm Duration, Td = .6167 hrs Tc = .0833 hrs
Hydrograph File:
................. 25-yr
.........
...........
.........
...........
...........
........
...... ........... ......... ........... ......... ............ ..........
VOLUM ........
ES
Wtd. Adjusted Duration Intens. Area Qpeak I Inflow Storage
'C' 'C' hrs in/hr acres cfs I ac-ft
---------- ac-ft
--------
-------
.467 ----------
.467 ---------
.0833 ------------
8.1858 --------
17.100 -------- ---
65.89 I .454 .278
.467 .467 .1667 7.0147 17.100 56.46 I .778 .517
.467 .467 .2500 6.0300 17.100 48.53 ( 1.003 .656
.467 .467 .3333 5.3984 17.100 43.45 I 1.197 .763
.467 .467 .5000 4.3200 17.100 34.77 I 1.437 .830
***************** ******************************************* Storage Maximum
467 .467 .6167 3.8869 17.100 31.28 I 1.594 .866
***************** *************************************************** ********
.467 .467 .6667 3.7012 17.100 29.79 1 1.641 .861
.467 .467 .8333 3.1893 17.100 25.67 1 1.768 .814
.467 .467 1.0000 2.8400 17.100 22.86 1 Qpeak < Qallow
5114: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #1 WEST
Type.... Mod. Rational Storm Calcs Page 7.06
Name. ... DA POND 1 WEST Tag: 100-yr Event: 1 00 yr
File. ... K:\03\0 3-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN 04.PPW
Storm ... 100-yea r IDF Tag: 100-yr
MODIFIED RATIONAL METHOD
- --- Summary for Single Storm Frequency - ---
Q = CiA * U nits Conversion; Where Conversion = 435 60 / (12 * 3600)
RETURN
------ FREQUENCY:
----------- 100 yr 'C' Adjustment = 1.000Allowabl
---------------------------------------- e Q = 30.04
----------- cfs
--------
Hydrograph Storm Duration, Td = .6000 hrs Tc = .0833 hrs
Hydrograph File:
................. 100-yr
.............................
...........
...........
........
...... ........... ............................. ........... ...........
VOLUM ........
ES
Wtd. Adjusted Duration Intens. Area Qpeak I Inflow Storage
'C' 'C' hrs in/hr acres cfs I
- ac-ft
--
-------- ac-ft
--------
-
467 -----------
.467 -----------------------------
.0833 9.7153 17.100 --------1-
78.20 i -
.538 .335
.467 .467 .1667 8.4052 17.100 67.65 1 .932 .622
.467 .467 .2500 7.2400 17.100 58.27 i 1.204 .790
467 .467 .3333 6.4676 17.100 52.06 1 1.434 .917
.467 .467 .5000 5.2800 17.100 42.50 1 1.756 1.032
****** *********** ***************************** *********** *** Storage Maximum
467 .467 .6000 4.8010 17.100 38.64 1 1.916 1.068

467 .467 .6667 4.4816 17.100 36.07 1 1.987 1.056
.467 .467 .8333 3.8792 17.100 31.22 1 2.150 1.013
.467 .467 1.0000 3.5000 17.100 28.17 1 Qpeak < Qallow
SIN: 22160372E1c5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:16 P14
Date: 1/29/2004
GARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #2
Job File: K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #2_JAN04.PPW
Rain Dir: K:\03\03-300\03300\H&H\PondPack\
JOB TITLE
Project Date: 1/29/2004
Project Engineer: Withers and Ravenel
Project Title: Carramore PUD Stormwater Management
Proposed Pond #2 - small wet pond upstream of Riggsbee Farm.
Pond #2 Design Highlights
Pond Bottom = 380'
Normal Pool = 384'
Top of Pond = 388'
Required Surface Area = 0.032 acres (1411 ftz)
Surface Area Provided = 0.108 acres (4704 ftz)
Required WQ Storage Volume = 0.080 ac-ft (3485 ft3)
WQ Storage Volume Provided = 0.388 ac-ft (16,919 ft 3)
10-year Calculated Freeboard = 1.98 ft
100-year Calculated Freeboard = 1.37 ft
Outlet Structure:
? 4' x 4' RCP Box Riser Structure w/ crest at 386.5'
? 18" RCP Barrel; 145 linear feet at 1.38% slope; Inverts at 380' and 378'
? 2" Faircloth Skimmer with 2" Head at 384' for extended draw-down
J
J
SIN: 22160372E1C5 withers & Ravenel
PondPack Ver. 9.0029 Time: 3:20 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMHATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #2
Table of Contents
Table of Contents
i
********************** MASTER SUMMARY **********************
Watershed....... Mod. Rational Grand Summary ........ 1.01
Master Network Summary ............. 1.02
********************** RAINFALL DATA ***********************
1-yr IDF Table.. 1-yr
I-D-F Table ........................ 2.01
10-yr IDF Table 10-yr
I-D-F Table ........................ 2.01
25-yr IDF Table 25-yr
I-D-F Table ........................ 2.02
100-yr IDF Table 100-yr
I-D-F Table ........................ 2.02
********************** TC CALCULATIONS *********************
POST AREA 2..... POST
Tc Calcs ........................... 3.01
*********************** POND VOLUMES ***********************
POND #2......... Vol: Elev-Area ..................... 4.01
******************** OUTLET STRUCTURES *********************
Outlet B........ Outlet Input Data .................. 5.01
Composite Rating Curve ............. 5.04
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:20 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND $12
Table of Contents
Table of Contents (continued)
ii
*********************** POND ROUTING ***********************
POND #2......... Pond E-V-Q Table ................... 6.01
****************** RATIONAL METHOD CALCS *******************
POST AREA 2..... 1-yr
Mod. Rational Storm Calcs .......... 7.01
POST AREA 2..... POST
C and Area ......................... 7.02
POST AREA 2..... 10-yr
Mod. Rational Storm Calcs .......... 7.03
POST AREA 2..... 25-yr
Mod. Rational Storm Calcs .......... 7.04
POST AREA 2..... 100-yr
Mod. Rational Storm Calcs .......... 7.05
S114: 22160372E1C5 Withers & Ravenel
PcndPack Ver. 9.0029 Time: 3:20 P14 Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #2
Type.... Mod. Rational Grand Summary Page 1.01
Name.... Watershed
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #2 JAN04.PPW
* *
* *
* MODIFIED RATIONAL METHOD
* ---- Grand Summary For All Storm Frequencies ----
* *
* *
************************************************************************
************************************************************************
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)

................ Area =
......... 3.000 acres
...........
....... Tc
............... = .0833
....... hrs
...........
................ ......... ............ ...... ............... ..................
VOLUMES
Freq. Adjusted Duration I Qpeak Allowablel Inflow Storage
years 'C'
---------------- hrs
--------- in/hr
------------ cfs
------ cfs I
----------- --- ac-ft
-------- ac-ft
----------
1 .450 4.1167 .5506 .75 .50 I .255 .168
10 .450 1.2000 2.1420 2.91 1.50 I .289 .209
25 .450 1.2000 2.5280 3.44 1.75 I .341 .248
100 .450 1.2167 3.0797 4.19 2.00 l .421 .314
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:20 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #2
Type.... Master Network Summary Page 1.02
Name.... Watershed
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #2 JAN04.PPW
MASTER DESIGN STORM SUMMARY
Default Network Design Storm File, ID
Return Event
------------
1-yr
10-yr
25-yr
100-yr
Rainfall
Type
---------------
I-D-F Curve
I-D-F Curve
I-D-F Curve
I-D-F Curve
IDF ID
Raleigh IDF
1-yr IDF Table
10-yr IDF Table
25-yr IDF Table
100-yr IDF Table
MASTER NETWORK SUMMARY
Modified Rational Method Network
(*Node=Outfall; +Node=Diversion;)
(Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt)
Max
Return 1IYG Vol Qpeak Qpeak Max WSEL Pond Storage
Node ID
----------
---
---- Type
---- Event
------ ac-ft Trun
---------- -- hrs
--------- cfs
-------- ft
-------- ac-ft
------------
*OUT 2 JCT 1 .050 .0100 .03
*OUT 2 JCT 10 .050 .0100 .03
*OUT 2 JCT 25 .050 .0100 .03
*OUT 2 JCT 100 .091 1.2500 2.40
POND #2 IN POND 1 .255 .0900 .75
POND #2 IN POND 10 .289 .0900 2.91
POND #2 IN POND 25 .341 .0900 3.44
POND #2 IN POND 100 .421 .0900 4.19
POND #2 OUT POND 1 .050 .0100 .03 385.78 .443
POND #2 OUT POND 10 .050 .0100 .03 386.02 .484
POND #2 OUT POND 25 .050 .0100 .03 386.31 .536
POND #2 OUT POND 100 .091 1.2500 2.40 386.63 .598
POST AREA 2 AREA 1 .255 .0833 .75
POST AREA 2 AREA 10 .289 .0833 2.91
POST AREA 2 AREA 25 .341 .0833 3.44
POST AREA 2 AREA 100 .421 .0833 4.19
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:20 P14 Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #2
Type.... I-D-F Table Page 2.01
Name.... 1-yr IDF Table Tag: 1-yr Event: 1 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 1-yr IDF Table Tag: 1-yr
Rainfall-Intensity-Duration Curve
Time, hrs
----------- Intens., in/hr
-----------
.0833 5.1000
.1670 4.2000
.2500 3.5000
.3330 3.0000
.5000 2.3800
1.0000 1.5000
2.0000 .8900
3.0000 .6500
6.0000 .3830
12.0000 .2330
24.0000 .1250
Type.... I-D-F Table
Name.... 10-yr IDF Table Tag: 10-yr Event: 10 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 10-yr IDF Table Tag: 10-yr
Rainfall-Intensity-Duration Curve
Time, hrs
----------- Intens., in/hr
-----------
.0833 7.2200
.1670 6.1300
.2500 5.2500
.3300 4.6400
.5000 3.7100
.6670 3.1500
.8330 2.7100
1.0000 2.4100
1.5000 1.7400
2.0000 1.3700
3.0000 1.0200
6.0000 .6500
12.0000 .3900
24.0000 .2200
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:20 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND 112
Type.... I-D-F Table Page 2.02
Name.... 25-yr IDF Table Tag: 25-yr Event: 25 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 25-yr IDF Table Tag: 25-yr
Rainfall-Intensity-Duration Curve
Time, hrs
-- Intens., in/hr
-----------
---------
.0833 8.1900
.1670 7.0100
.2500 6.0300
.3300 5.4200
.5000 4.3200
.6670 3.7000
.8330 3.1900
1.0000 2.8400
1.5000 2.0600
2.0000 1.6200
3.0000 1.2100
6.0000 .7700
12.0000 .4600
24.0000 .2700
Type.... I-D-F Table
Name.... 100-yr IDF Table Tag: 100-yr Event: 100 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 100-yr IDF Table Tag: 100-yr
Rainfall-Intensity-Duration Curve
Time, hrs
-
- Intens., in/hr
-----------
-------
--
.0833 9.7200
.1670 8.4000
.2500 7.2400
.3330 6.4700
.5000 5.2800
.6670 4.4800
.8330 3.8800
1.0000 3.5000
1.5000 2.5300
2.0000 2.0000
3.0000 1.5000
6.0000 .9600
12.0000 .5700
24.0000 .3300
S/17: 22160372E1c5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:20 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #2
Type.... Tc Calcs Page 3.01
Name.... POST AREA 2 Tag: POST
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #2 JAN04.PPW
........................................................................
........................................................................
TIME OF CONCENTRATION CALCULATOR
........................................................................
........................................................................
Segment #1: Tc: User Defined
Segment #1 Time: .0833 hrs
------------------------------------------------------------------------
-------------------------
-------------------------
Total Tc: .0833 hrs
Calculated Tc < Min.Tc:
Use Minimum Tc...
Use Tc = .0833 hrs
-------------------------
-------------------------
S/N: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:20 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND 112
Type.... Vol: Elev-Area Page 4.01
Name.... POND #2
File.... K:\03\03-300\03300\11&H\PondPack\CARRAMORE POND #2 JAN04.PPW
Elevation Planimeter Area Al+A2+sgr(Al*A2) Volume Volume Sum
(ft) (sq.in) (acres)
---------- (acres)
---------------- (ac-ft)
---------- (ac-ft)
-------------
------------
380.00 -----------
----- .0072 .0000 .000 .000
382.00 ----- .0468 .0724 .048 .048
384.00 ----- .1080 .2259 .151 .199
386.00 ----- .1765 .4226 .282 .481
388.00 ----- .2526 .6402 .427 .907
POND VOLUME EQUATIONS
* Incremental volume computed by the Conic Method for Reservoir Volumes.
Volume = (1/3) * (EL2-EL1) * (Areal + Area2 + sq.rt.(Areal*Area2))
where: EL1, EL2 = Lower and upper elevations of the increment
Areal,Area2 = Areas computed for EL1, EL2, respectively
Volume = Incremental volume between ELl and EL2
SIN: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 3:20 PI4
Date: 1/29/2004
GARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##2
Type.... Outlet Input Data Page 5.01
Name.... Outlet B
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #2 JAN04.PPW
REQUESTED POND WS ELEVATIONS:
Min. Elev.= 380.00 ft
Increment = .10 ft
Max. Elev.= 388.00 ft
**********************************************
OUTLET CONNECTIVITY
---> Forward Flow Only (UpStream to DnStream)
<--- Reverse Flow Only (DnStream to UpStream)
<---> Forward and Reverse Both Allowed
Structure No. Outfall E1, ft E2, ft
User Defined Table SK ---> TW .000 388.000
Inlet Box RI ---> CV 386.500 388.000
Culvert-Circular CV ---> TW 380.000 388.000
TW SETUP, DS Channel
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:20 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #2
Type.... Outlet Input Data Page 5.02
Name.... Outlet B
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #2_JAN04.PPW
OUTLET STRUCTURE INPUT DATA
Structure ID = SK
Structure Type = User Defined Table
------------------------------------
ELEV-FLOW RATING TABLE
Elev, ft Flow, cfs
--------- ---------
380.00 .00
383.99 .00
384.00 .03
388.00 .03
Structure ID = RI
Structure Type
--- = Inlet Box
-------------
------
--------------
# of Openings = 1
Invert Elev. = 386.50 ft
Orifice Area = 16.0000 sq.ft
Orifice Coeff. _ .600
Weir Length = 16.00 ft
Weir Coeff. = 3.100
K, Submerged = .000
K, Reverse = 1.000
Kb,Barrel = .000000 (per ft of full flow)
Barrel Length = .00 ft
Mannings n = .0000
S/id: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:20 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #2
Type.... Outlet Input Data Page 5.03
Name.... Outlet B -
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #2 JAN04.PPW
OUTLET STRUCTURE INPUT DATA
Structure ID = CV
Structure Type =
----- Culvert-Circular
--------------
No. Barrels = ----------
1 -------
Barrel Diameter = 1.5000 ft
Upstream Invert = 380.00 ft
Dnstream Invert = 378.00 ft
Horiz. Length = 145.00 ft
Barrel Length = 145.01 ft
Barrel Slope = .01379 ft/ft
OUTLET CONTROL DATA ...
Mannings n = .0130
Ke = .5000 (forward entrance loss)
Kb = .018213 (per ft of full flow)
Kr = .5000 (reverse entrance loss)
HW Convergence = .001 +/- ft
INLET CONTROL DATA...
Equation form = 1
Inlet Control K = .0098
Inlet Control M = 2.0000
Inlet Control c = .03980
Inlet Control Y = .6700
T1 ratio (HW/D) = 1.153
T2 ratio (HW/D) = 1.300
Slope Factor = -.500
Use unsubmerged inlet control Form 1 equ. below T1 elev.
Use submerged inlet control Form 1 equ. above T2 elev.
In transition zone between unsubmerged and submerged inlet control,
interpolate between flows at T1 & T2...
At T1 Elev = 381.73 ft ---> Flow = 7.58 cfs
At T2 Elev = 381.95 ft ---> Flow = 8.66 cfs
Structure ID = TW
Structure Type
----=-TW-SETUP, DS Channel
--------- ----- ------ ------- LLL
FREE OUTFALL CONDITIONS SPECIFIED
CONVERGENCE TOLERANCES...
Maximum Iterations= 30
Min. TW tolerance = .01 ft
Max. TW tolerance = .01 ft
Min. HW tolerance = .01 ft
Max. HW tolerance = .01 ft
Min. Q tolerance = .10 cfs
Max. Q tolerance = .10 cfs
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:20 PM Date: 1/29/2004
F]I CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND 112
Type.... Composite Rating Curve
Name.... Outlet B
Page 5.04
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #2 JAN04.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
WS Elev, Total Q Notes
-------- -------- ----- --- Converge ---- --- ------------------
Elev. Q TW Elev Error
ft cfs ft +/-ft Contributing Structures
----------------------
--------
380.00 -------
.00 -----
Free --- ----- -
Outfall ---
(no Q: SK,RI,CV)
380.10 .00 Free Outfall (no Q: SK,RI,CV)
380.20 .00 Free Outfall (no Q: SK,RI,CV)
380.30 .00 Free Outfall (no Q: SK,RI,CV)
380.40 .00 Free Outfall (no Q: SK,RI,CV)
380.50 .00 Free Outfall (no Q: SK,RI,CV)
380.60 .00 Free Outfall (no Q: SK,RI,CV)
380.70 .00 Free Outfall (no Q: SK,RI,CV)
380.80 .00 Free Outfall (no Q: SK,RI,CV)
380.90 .00 Free Outfall (no Q: SK,RI,CV)
381.00 .00 Free Outfall (no Q: SK,RI,CV)
381.10 .00 Free Outfall (no Q: SK,RI,CV)
381.20 .00 Free Outfall (no Q: SK,RI,CV)
381.30 .00 Free Outfall (no Q: SK,RI,CV)
381.40 .00 Free Outfall (no Q: SK,RI,CV)
381.50 .00 Free Outfall (no Q: SK,RI,CV)
381.60 .00 Free Outfall (no Q: SK,RI,CV)
381.70 .00 Free Outfall (no Q: SK,RI,CV)
381.80 .00 Free Outfall (no Q: SK,RI,CV)
381.90 .00 Free Outfall (no Q: SK,RI,CV)
382.00 .00 Free Outfall (no Q: SK,RI,CV)
382.10 .00 Free Outfall (no Q: SK,RI,CV)
382.20 .00 Free Outfall (no Q: SK,RI,CV)
382.30 .00 Free Outfall (no Q: SK,RI,CV)
382.40 .00 Free Outfall (no Q: SK,RI,CV)
382.50 .00 Free Outfall (no Q: SK,RI,CV)
_ 382.60 .00 Free Outfall (no Q: SK,RI,CV)
382.70 .00 Free Outfall (no Q: SK,RI,CV)
382.80 .00 Free Outfall (no Q: SK,RI,CV)
382.90 .00 Free Outfall (no Q: SK,RI,CV)
383.00 .00 Free Outfall (no Q: SK,RI,CV)
383.10 .00 Free Outfall (no Q: SK,RI,CV)
383.20 .00 Free Outfall (no Q: SK,RI,CV)
383.30 .00 Free Outfall (no Q: SK,RI,CV)
383.40 .00 Free Outfall (no Q: SK,RI,CV)
383.50 .00 Free Outfall (no Q: SK,RI,CV)
383.60 .00 Free Outfall (no Q: SK,RI,CV)
383.70 .00 Free Outfall (no Q: SK,RI,CV)
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:20 P14
Date: 1/29/2004
I
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #2
Type.... Composite Rating Curve
Name.... Outlet B
Page 5.05
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #2 JAN04.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
WS Elev, Total Q Notes
-------- -------- ----- --- Converge -------- -- ---------------
Elev. Q TW Elev Error
ft
- cfs
- ft +/-ft
----
---- Contributing Structures
--------------------------
-------
383.80 ------
.00 ----
Free -
Outfall (no Q: SK ,RI,CV)
383.90 .00 Free Outfall (no Q: SK ,RI,CV)
384.00 .03 Free Outfall SK (no Q: RI,CV)
384.10 .03 Free Outfall SK (no Q: RI,CV)
384.20 .03 Free Outfall SK (no Q: RI,CV)
384.30 .03 Free Outfall SK (no Q: RI,CV)
384.40 .03 Free Outfall SK (no Q: RI,CV)
384.50 .03 Free Outfall SK (no Q: RI,CV)
384.60 .03 Free Outfall SK (no Q: RI,CV)
384.70 .03 Free Outfall SK (no Q: RI,CV)
384.80 .03 Free Outfall SK (no Q: RI,CV)
384.90 .03 Free Outfall SK (no Q: RI,CV)
385.00 .03 Free Outfall SK (no Q: RI,CV)
385.10 .03 Free Outfall SK (no Q: RI,CV)
385.20 .03 Free Outfall SK (no Q: RI,CV)
385.30 .03 Free Outfall SK (no Q: RI,CV)
385.40 .03 Free Outfall SK (no Q: RI,CV)
385.50 .03 Free Outfall SK (no Q: RI,CV)
385.60 .03 Free Outfall SK (no Q: RI,CV)
385.70 .03 Free Outfall SK (no Q: RI,CV)
385.80 .03 Free Outfall SK (no Q: RI,CV)
385.90 .03 Free Outfall SK (no Q: RI,CV)
386.00 .03 Free Outfall SK (no Q: RI,CV)
386.10 .03 Free Outfall SK (no Q: RI,CV)
386.20 .03 Free Outfall SK (no Q: RI,CV)
386.30 .03 Free Outfall SK (no Q: RI,CV)
386.40 .03 Free Outfall SK (no Q: RI,CV)
386.50 .03 Free Outfall SK (no Q: RI,CV)
386.60 1.60 Free Outfall SK,RI,CV
386.70 4.47 Free Outfall SK,RI,CV
386.80 8.18 Free Outfall SK,RI,CV
386.90 12.58 Free Outfall SK,RI,CV
387.00 17.57 Free Outfall SK,RI,CV
387.10 19.25 Free Outfall SK,RI,CV
387.20 19.38 Free Outfall SK,RI,CV
387.30 19.50 Free Outfall SK,RI,CV
387.40 19.63 Free Outfall SK,RI,CV
387.50 19.75 Free Outfall SK,RI,CV
S/21: 22160372E1c5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:20 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND 02
Type.... Composite Rating Curve Page 5.06
Name.... Outlet B
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #2_JAN04.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
WS Elev, Total Q Notes
-------- -------- -------- Converge -------------------------
Elev. Q TW Elev Error
ft cfs ft +/-ft
----- - Contributing Structures
-------------------------
--------
387.60 -------
19.87 --------
Free Outfall SK,RI,CV
387.70 19.99 Free Outfall SK,RI,CV
387.80 20.11 Free Outfall SK,RI,CV
387.90 20.23 Free Outfall SK,RI,CV
388.00 20.35 Free Outfall SK,RI,CV
SIN: 22160372E1C5 Withers & Ravenel
PcndPack Ver. 9.0029 Time: 3:20 P14 Date: 1/29/2004
GARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #2
Type.... Pond E-V-Q Table Page 6.01
Name.... POND #2
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #2 JAN04.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\03\03-300\03300\H&H\PondPack\
Inflow HYG file = NONE STORED - POND #2 IN 1-yr
Outflow HYG file = NONE STORED - POND #2 OUT 1-yr
Pond Node Data = POND #2
Pond Volume Data = POND #2
Pond Outlet Data = Outlet B
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 384.00 ft
Starting Volume = .199 ac-ft
Starting Outflow = .03 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .03 cfs
Time Increment = .0100 hrs
Elevation Outflow Storage Area Infilt
ft
-- cfs ac-ft acres cfs
-----------
380.00 ------------
.00 ---------
.000 -----------
.0072 --------
.00
380.10 .00 .001 .0084 .00
380.20 .00 .002 .0096 .00
380.30 .00 .003 .0109 .00
380.40 .00 .004 .0124 .00
380.50 .00 .005 .0139 .00
380.60 .00 .007 .0154 .00
380.70 .00 .008 .0171 .00
380.80 .00 .010 .0189 .00
380.90 .00 .012 .0207 .00
381.00 .00 .014 .0227 .00
381.10 .00 .017 .0247 .00
381.20 .00 .019 .0268 .00
381.30 .00 .022 .0290 .00
381.40 .00 .025 .0313 .00
381.50 .00 .028 .0337 .00
381.60 .00 .032 .0361 .00
381.70 .00 .035 .0387 .00
381.80 .00 .039 .0413 .00
381.90 .00 .044 .0440 .00
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:20 PM
Q Total 2S/t + O
cfs cfs
---
-
--------------
.00 -
-----
.00
.00 1.88
.00 4.05
.00 6.54
.00 9.35
.00 12.52
.00 16.07
.00 20.01
.00 24.36
.00 29.16
.00 34.41
.00 40.14
.00 46.37
.00 53.12
.00 60.42
.00 68.28
.00 76.72
.00 85.76
.00 95.43
.00 105.75
Date: 1/29/2004
C
01 CARRA14ORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##2
Type.... Pond E-V-Q Table Page 6.02
Name.... POND #2
1 File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #2_JAN04.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\03\03-300\03300\H&11\PondPack\
Inflow HYG file = NONE STORED - POND #2 IN 1-yr
Outflow HYG file = NONE STORED - POND #2 OUT 1-yr
Pond Node Data = POND #2
Pond Volume Data = POND #2
Pond Outlet Data = Outlet B
No Infiltration
INITIAL CONDITIONS
=r Starting WS Elev = 384.00 ft
Starting Volume = .199 ac-ft
Starting Outflow .03 cfs
Starting _
Infiltr. .00 cfs
Starting Total Qout= .03 cfs
Time Increment = 0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + 0
ft cfs ac-ft acres cfs cfs cfs
-------------
382.00 ------------
.00 ---------
.048 -----------
.0468 -----------
.00 ------------
.00 ----------
116.74
r 382.10 .00 .053 .0493 .00 .00 128.36
382.20 .00 .058 .0518 .00 .00 140.58
382.30 .00 .063 .0544 .00 .00 153.42
382.40 .00 .069 .0570 .00 .00 166.90
382.50 .00 .075 .0597 .00 .00 181.03
382.60 .00 .081 .0625 .00 .00 195.82
` 382.70 .00 .087 .0654 .00 .00 211.29
382.80 .00 .094 .0683 .00 .00 227.45
382.90 .00 .101 .0712 .00 .00 244.33
383.00 .00 .108 .0742 .00 .00 261.93
383.10 .00 .116 .0773 .00 .00 280.27
383.20 .00 .124 .0805 .00 .00 299.37
383.30 .00 .132 .0837 .00 .00 319.23
383.40 .00 .140 .0870 .00 .00 339.89
383.50 .00 .149 .0903 .00 .00 361.34
383.60 .00 .159 .0937 .00 .00 383.62
383.70 .00 .168 .0972 .00 .00 406.72
383.80 .00 .178 .1007 .00 .00 430.67
383.90 .00 .188 .1043 .00 .00 455.48
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:20 P14
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #2
Type.... Pond E-V-Q Table Page 6.03
Name.... POND #2
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #2 JAN04.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\03\03-300\03300\11&H\PondPack\
Inflow HYG file = NONE STORED - POND #2 IN 1-yr
Outflow HYG file = NONE STORED - POND #2 OUT 1-yr
Pond Node Data = POND #2
Pond Volume Data = POND #2
Pond Outlet Data = Outlet B
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 384.00 ft
Starting Volume = .199 ac-ft
Starting Outflow = .03 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .03 cfs
Time Increment = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total
ft
--------- cfs ac-ft acres cfs cfs
-
-
---
384.00 ------------
.03 ----------
.199 -----------
.1080 -----------
.00 -------
-
.03
384.10 .03 .210 .1110 .00 .03
384.20 .03 .221 .1141 .00 .03
384.30 .03 .233 .1172 .00 .03
384.40 .03 .244 .1204 .00 .03
384.50 .03 .257 .1236 .00 .03
384.60 .03 .269 .1268 .00 .03
384.70 .03 .282 .1301 .00 .03
384.80 .03 .295 .1334 .00 .03
384.90 .03 .309 .1368 .00 .03
385.00 .03 .323 .1402 .00 .03
385.10 .03 .337 .1436 .00 .03
385.20 .03 .351 .1471 .00 .03
385.30 .03 .366 .1506 .00 .03
385.40 .03 .381 .1542 .00 .03
385.50 .03 .397 .1578 .00 .03
385.60 .03 .413 .1615 .00 .03
385.70 .03 .429 .1652 .00 .03
385.80 .03 .446 .1689 .00 .03
385.90 .03 .463 .1727 .00 .03
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:20 PM
2S/t + 0
cfs
481.21
507.71
534.95
562.93
591.68
621.19
651.49
682.57
714.44
747.13
780.63
814.97
850.15
886.16
923.04
960.80
999.43
1038.95
1079.36
1120.69
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND 112
Type.... Pond E-V-Q Table Page 6.04
Name.... POND #2
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND 42_JAN04.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\03\03-300\03300\H&H\PondPack\
Inflow HYG file = NONE STORED - POND #2 IN 1-yr
Outflow HYG file = NONE STORED - POND #2 OUT 1-yr
Pond Node Data = POND #2
Pond Volume Data = POND #2
Pond Outlet Data = Outlet B
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 384.00 ft
Starting Volume = .199 ac-ft
Starting Outflow = .03 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .03 cfs
Time Increment = .0100 hrs
Elevation
ft
386.00
386.10
386.20
386.30
386.40
386.50
386.60
386.70
386.80
386.90
387.00
387.10
387.20
387.30
387.40
387.50
387.60
387.70
387.80
387.90
388.00
Outflow Storage Area
cfs ac-ft acres
--
----------
.03 -----------
.481 -------
.1765
.03 .498 .1800
.03 .517 .1835
.03 .535 .1870
.03 .554 .1906
.03 .573 .1942
1.60 .593 .1979
4.47 .613 .2016
8.18 .633 .2053
12.58 .654 .2091
17.57 .675 .2128
19.25 .696 .2167
19.38 .718 .2205
19.50 .741 .2244
19.63 .763 .2283
19.75 .786 .2323
19.87 .810 .2363
19.99 .833 .2403
20.11 .858 .2444
20.23 .882 .2485
20.35 .907 .2526
S/N: 22160372E1C5
PondPack Ver. 9.0029
Infilt. Q Total 2S/t + 0
cfs cfs
- cfs
----------
-----------
.00 -----------
.03 1162.95
.00 .03 1206.08
.00 .03 1250.07
.00 .03 1294.89
.00 .03 1340.59
.00 .03 1387.16
.00 1.60 1436.19
.00 4.47 1487.39
.00 8.18 1540.33
.00 12.58 1594.87
.00 17.57 1650.91
.00 19.25 1704.57
.00 19.38 1757.60
.00 19.50 1811.55
.00 19.63 1866.46
.00 19.75 1922.32
.00 19.87 1979.15
.00 19.99 2036.94
.00 20.11 2095.69
.00 20.23 2155.45
.00 20.35 2216.20
Withers & Ravenel
Time: 3:20 214
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##2
TYPe.... Mod. Rational Storm Calcs Page 7.01
Name.... POST AREA 2 Tag: 1-yr Event: 1 yr
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #2_JAN04.PPW
Storm... 1-yr IDF Table Tag: 1-yr
MODIFIED RATIONAL METHOD
---- Summary for Single Storm Frequency ----
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)
RETURN
------- FREQUENCY:
---------- 1 yr 'C'
---------- Adjustment
----------- = 1.000Allowable
------------------- Q = .50 cfs
------------
-------
Hydrograph Storm Duration, Td = 4.1167 hrs Tc = .0833 hrs
Hydrograph File:
................. 1-yr
..........
...........
.......
............
............
.......
....... .......... .......... ........... ....... ............ ...................
VOLUMES
Wtd. Adjusted Duration Intens. Area Qpeak I Inflow Storage
'Cl 'C' hrs in/hr acres cfs I ac-ft
---------- ac-ft
-------
-------
.450 ----------
.450 ----------
.0833 -----------
5.1000 -------
3.000 --------- --
6.93 I --
.048 .044
.450 .450 .1667 4.2036 3.000 5.72 1 .079 .074
.450 .450 .2500 3.5000 3.000 4.76 1 .098 .091
.450 .450 .3333 2.9988 3.000 4.08 1 .112 .104
.450 .450 .5000 2.3800 3.000 3.24 1 .134 .122
.450 .450 .6667 2.0867 3.000 2.84 1 .156 .141
.450 .450 .8333 1.7933 3.000 2.44 1 .168 .149
.450 .450 1.0000 1.5000 3.000 2.04 1 .169 .146
.450 .450 2.0000 .8900 3.000 1.21 1 .200 .157
.450 .450 3.0000 .6500 3.000 .88 1 .219 .155
.450 .450 4.0000 .5610 3.000 .76 1 .252 .168
************************************************************ Storage Maximum
.450 .450 4.1167 .5506 3.000 .75 1 .255 .168
****************************************************************************
.450 .450 5.0000 .4720 3.000 .64 1 .265 .160
.450 .450 6.0000 .3830 3.000 .52 1 .258 .133
.450 .450 7.0000 .3580 3.000 .49 1 Qpeak < Qallow
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:20 P14 Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND 412
Type.... C and Area Page 7.02
Name.... POST AREA 2 Tag: POST
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #2 JAN04.PPW
RATIONAL C COEFFICIENT DATA
.........................................................................
.........................................................................
Area C x Area
Soil/Surface Description C acres acres
-------------------------------- -------- ---------- ----------
Residential 3 - 4 du/acre .4750 2.700 1.283
Pond area .2200 .300 .066
WEIGHTED C & TOTAL AREA ---> .4495 3.000 1.349
.........................................................................
.........................................................................
SIN: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 3:20 PM
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #2
L
Type.... Mod. Rational Storm Calcs Page 7.03
Name.... POST AREA 2 Tag: 10-yr Event: 10 yr ?.
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #2_JAN04.PPW
Storm... 10-yr IDF Table Tag: 10-yr
MODIFIED RATIONAL METHOD
---- Summary for Single Storm Frequency ----
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)
RETURN FREQUENCY: 10 yr 'C' Adjustment = 1.000Allowable Q = 1.50 cfs
----------------------------------------------------------------------------
Hydrograph Storm Duration, Td = 1.2000 hrs Tc = .0833 hrs
Hydrograph File:
................. 10-yr
.........
............
........
...........
..........
.........
...... ........... ......... ............ ........ ........... ..........
VOLU .........
MES
Wtd. Adjusted Duration Intens. Area Qpeak I Inflow Storage
'C'
---- 'C' hrs in/hr acres cfs I ac-ft ac-ft
--
.450 -----------
.450 ---------
.0833 ------------
7.2200 --------
3.000 -------- --
9.82 I ----------
.068 ---------
.057
.450 .450 .1667 6.1343 3.000 8.34 i .115 .099
.450 .450 .2500 5.2500 3.000 7.14 I .147 .127
.450 .450 .3333 4.6218 3.000 6.28 .173 .147
.450 .450 .5000 3.7100 3.000 5.04 .208 .172
.450 .450 .6667 3.1511 3.000 4.28 1 .236 .190
.450 .450 .8333 2.7094 3.000 3.68 I .254 .197
.450 .450 1.0000 2.4100 3.000 3.28 I .271 .204
************************************************************ Storage Maximum
.450 .450 1.2000 2.1420 3.000 2.91 1 .289 .209
****************************************************************************
.450 .450 2.0000 1.3700 3.000 1.86 1 .308 .179
.450 .450 3.0000 1.0200 3.000 1.39 1 Qpeak < Qallow
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:20 PM Date: 1/29/2004
600Z/6Z/T :alea
Wd OZ=£ :atuTI
Tauaney 9 01a)g4TM
6Z00'6 'zaA X02dPaod
9DT3ZL£09TZZ :N/S
MOTTeO > xeadO I 99'T 000'E OOTZ'T 0000'E OSV' OSV'
ETZ' v9E' I OZ'Z 000'E OOZ9'T 0000'Z OSV' OSV'
8vZ' TvE' I vv'E 000'E 08ZS'Z OOOZ'T OSV' OSV'
uInUITXeN 05ez045 + x r x + x x x x x ???? r r??? r x x x
Tv * 6TE' 1 98'E 000'E 0068'Z 0000'T uSv- u5v-
ZEZ' 66Z' I vE'v 000'£ E68T'E EEE8' OSV' OSV'
EZZ' LLZ' I EO'S 000'£ ZTOL'E L999' OSV' Osv'
TOZ' CvZ' I L8'S 000'E OOZ£'v OOOS' OSV' OSV'
ZLT' ZOZ' I vE'L 000'E v86E'S EEEE' OSV' 09V'
SvT' 69T' 1 OZ'8 000'£ 00£0'9 OOSZ' OSV' OSv'
CTT' T£T' 1 v9'6 OWE LvTO'L L99T' OSV' OSV'
S90' LLO' I vT'TT OWE
----- 006T'8
------------ EE80'
--------- OSV'
----------- OSV'
------
----------
?3-ae ---------
?3-oe --I---------
I s30 --
SO-TOP zy/uT szu ,0, ,0,
abezogS MOTJuI I Neado eazv •suaOul uoTOezna pogsnCpy •p4M
S2NMOA
.......... ......... ............ ....... ............ ..zA_SZ.. .:aTT3 udezbozpAFl
szy CC80' = OI szy OOOZ'T = PI 'uoTgezna uizogS udezbozpAH
----------
sJ0 ---------
SL* T = b -------------------
aTgeMoTTVOOO * T = q ---------------------
uauigsnCpv , 0, zA SZ ----------
:,k3N2100TF3 -------
WdOl32F
(009£ * ZT) / 09SEP = U0TSZanu00 azayM !UOTSZanuoO S4TUp * KTO = 0
---- Aouanb@jZ uizolS aTbuTS zo3 AzeununS ----
QOHIEH 'IKNOIIV-d aHI3I0011
IA-SZ :bel aT4el 3aI zA-SZ ...uizo4S
Mdd' vONtlr Z# aNOd 3E0NV'dlFK0\N3edpu0d\HIH\00CMOO£-£0\£0\:M ' ' ' ' aTT3
JA SZ :IuaA3 JA-SZ :BPI Z V3dV ISOd ....auieN
v0'L abed SOTP3 ui101S TeuoTOeg •POH .... adAl
z# axoa uoa snasno x0vaaKoa
aria maKaf rxm uHSvmkuoss - i HsvHa ana aumiuuvo
' 6002/6Z/T :94eQ YZd OZ:£ :auz?Z 6Z00'6 '=an NDUdpuOd
Tauaneg I GaDT44?M G013ZL£091ZZ :N/S
MOTTeO > xuado 16L'T 000,E OOZE'T 0000'6 OS6' OS6'
TSZ' 90S' 160'Z 000,E OOOS'T 0000,E OS6' OS6'
LLZ' OS6' I ZL'Z 000,E 0000'Z 0000'Z OS6' OS6'

6TE' TZ6' 16T'6 000,E L6LO'E L91Z'T OS6' OS6'
uinuitxeyq abezogS
60E' E6E' 19L'6 000,E OOOS'E 0000'T OS6' OS6'
'
88Z' E9E' I LZ'S 000,E Z6L8'E EEE8' OS6' OS6'
6LZ' 9EE' 1 60'9 000,E 9T86'6 L999' OS6' OS6'
86Z' L6Z' 18T'L 000'£ 008Z'S OOOS' OS6' OS6'
80Z' Z6Z' 16L'8 000,E 9L96'9 EEEE' OS6' OS6'
9LT' EOZ' 168'6 000,E OOPZ'L OOSZ' OS6' OS6'
LET' LST' I E6'TT 000,E ES06'8 L99T' OS6' OS6'
LLO'
-------- T60
--------- I -ZZ'ET ----
--- 000,E EE80_-- OS6_
- OS6_
'
q3-oe -
-4 3-oe
I sjo
sazoe ------
zLI/uT
szy ---
--
-
O, -
-
,O.
abuzogs MOT-TuI I Nuado eazy •sua-4ul uoTgezna pa4snCpV •pqM

-TA-00T :aT?3 udez bozpAH

I u EE80' = oy SJq L9TZ'T = PI 'uoTgezna wa oqS udez bozpAH
--------
sJO ----------
00'Z = Z5 --------------------------------
aTgeMOTTK000'T = 4uaw4snCpy ,0, ---------
JA OOT -----------
:,?ON3nb32i3 ------
Ndns3ld
' (009E * ZT) / 09SE6 = uoTSZaAUOO azauM :uoTSZanuoO s4?un + K?O =
-- -- AouGnbajZ uizo4S aTbUTS zo3 AzeununS --- -
a0HIEN ` VNOIIYd a3I3Ia0W
zA-OOT :buy aTgel ZOI JA-OOT ..uizo?S
Mdd'60NKr Z# aNOd a'dO K2IdVD\NOedPuOd\H3H\OOE£0\00£-£0\£0\:x ':''aT?3
zA OOT :quaA3 zA-OOT :bes Z K3UV ZSOd auieN
SO'L abud SOTuO urzo4S TuuoT4ug .poH .... adAy
z# ama xoa snasno xovaaNoa
NTIa sNSM!)VKVK U:EIV MKUosS - z HSVHa ana HztoMUUVD
GARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #3
Job File: K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #3_JAN04.PPW
Rain Dir: K:\03\03-300\03300\H&H\PondPack\
JOB TITLE
--------------------------
Project Date: 1/29/2004
Project Engineer: Withers and Ravenel
Project Title: Carramore PUD Stormwater Management
Proposed Pond #3 - small wet pond upstream of Preston Village.
Pond #3 Design Highlights
Pond Bottom = 374'
Normal Pool = 378'
Top of Pond = 384'
Required Surface Area = 0.025 acres (1082 ftz)
Surface Area Provided = 0.087 acres (3785 ft2)
Required WQ Storage Volume = 0.061 ac-ft (2672 ft3)
WQ Storage Volume Provided = 0.516 ac-ft (22,490 ft3)
10-year Calculated Freeboard = 4.01 ft
100-year Calculated Freeboard = 3.30 ft
Outlet Structure:
? 4' x 4' RCP Box Riser Structure w/ crest at 382'
? 18" RCP Barrel tied into downstream existing storm drain system; 230 linear feet
at 3.48% slope; Inverts at 374' and 366'
? 2" Faircloth Skimmer with 2" Head at 378' for extended draw-down
1 SIN: 22160372EiC5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #3
Table of Contents
Table of Contents
i
********************** MASTER SUMMARY **********************
Watershed....... Mod. Rational Grand Summary ........ 1.01
Master Network Summary ............. 1.02
********************** RAINFALL DATA ***********************
1-yr IDF Table.. 1-yr
I-D-F Table ........................ 2.01
10-yr IDF Table 10-yr
I-D-F Table ........................ 2.01
25-yr IDF Table 25-yr
I-D-F Table ........................ 2.02
100-yr IDF Table 100-yr
I-D-F Table ........................ 2.02
********************** TC CALCULATIONS *********************
POST AREA 3..... POST
Tc Calcs ........................... 3.01
*********************** POND VOLUMES ***********************
POND #3......... Vol: Elev-Area ..................... 4.01
******************** OUTLET STRUCTURES *********************
Outlet B........ Outlet Input Data .................. 5.01
Composite Rating Curve ............. 5.04
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 PM Date: 1/29/2004
s
i
s
i
s
e
e
i
e

GARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND 113
Table of Contents
Table of Contents (continued)
ii
*********************** POND ROUTING ***********************
POND #3......... Pond E-V-Q Table ................... 6.01
****************** RATIONAL METHOD CALCS *******************
POST AREA 3..... 1-yr
Mod. Rational Storm Calcs .......... 7.01
POST AREA 3..... POST
C and Area ......................... 7.02
POST AREA 3..... 10-yr
Mod. Rational Storm Calcs .......... 7.03
POST AREA 3..... 25-yr
Mod. Rational Storm Calcs .......... 7.09
POST AREA 3..... 100-yr
Mod. Rational Storm Calcs .......... 7.05
SIN: 22160372E1C5
PondPack Ver. 9.0029
Withers 6 Ravenel
Time: 3:35 P14
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #3
TYPe.... Mod. Rational Grand Summary Page 1.01
Name.... Watershed -
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #3 JAN04.PPW
************************************************************************
************************************************************************
* *
* *
* MODIFIED RATIONAL METHOD
* ---- Grand Summary For All Storm Frequencies ----
* *
* *
************************************************************************
************************************************************************
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)

................ Area =
......... 2.500 acres
...........
........ Tc
.............. = .0833
........ hrs
..........
................ ......... ........... ........ .............. ..................
VOLUMES
Freq. Adjusted Duration I Qpeak Allowable) Inflow Storage
years 'C'
---------------- hrs
--------- in/hr
----------- cfs
-------- cfs I
---------- --- ac-ft
-------- ac-ft
----------
1 .400 .8500 1.7640 1.78 .50 I .125 .106
10 .400 1.2167 2.1197 2.14 1.00 1 .215 .161
25 .400 1.2167 2.5020 2.53 1.25 1 .254 .187
100 .400 1.1833 3.1443 3.17 1.75 1 .310 .219
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 PM Date: 1/29/2004
GARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##3
Type.... Master Network Summary Page 1.02
Name.... Watershed
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND 43_JAN04.PPW

MASTER DESIGN STORM SUMMARY
Default Network Design Storm File, ID

Rainfall
Return Event Type

y
----------- ---------------
1-
r I-D-F Curve
10-yr I-D-F Curve
25-yr I-D-F Curve
100-yr I-D-F Curve

Raleigh IDF
IDF ID
1-yr IDF Table
10-yr IDF Table
25-yr IDF Table
100-yr IDF Table
MASTER NETWORK SUMMARY
Modified Rational Method Network
(*Node=Outfall; +Node=Diversion;)
(Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt)

Max
Return HYG Vol Qpeak Qpeak Max WSEL Pond Storage
NodeID Type Event ac-ft Trun hrs cfs --------
---ac_ft
_
------------
-----------
*OUT 3
*OUT -- ---- JCT 1 _ -
.033 .0100 .02
*OUT 3 JCT 10 .033 .0100 .02
OUT 3 JCT 25 .033 .0100 .02
*OUT 3 JCT 100 .033 .0100 .02
POND #3 IN POND 1 .125 .0900 1.78
POND #3 IN POND 10 .215 .0900 2.14
POND #3 IN POND 25 .254 .0900 2.53
POND #3 IN P014D 100 .310 .0900 3.17
POND #3 OUT POND 1 .033 .0100 .02 379.25 .338
POND #3 OUT POND 10 .033 .0100 .02 379.99 .427
POND #3 OUT POND 25 .033 .0100 .02 380.29 .466
POND #3 OUT POND 100 .033 .0100 .02 380.70 .523
POST AREA 3 AREA 1 .125 .0833 1.78
POST AREA 3 AREA 10 .215 .0833 2.14
POST AREA 3 AREA 25 .254 .0833 2.53
POST AREA 3 AREA 100 .310 .0833 3.17
i
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 Phi Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #3
Type.... I-D-F Table Page 2.01
Name.... 1-yr IDF Table Tag: 1-yr Event: 1 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 1-yr IDF Table Tag: 1-yr
Rainfall-Intensity-Duration Curve
Time, hrs
----------- Intens., in/hr
-----------
.0833 5.1000
.1670 4.2000
.2500 3.5000
.3330 3.0000
.5000 2.3800
1.0000 1.5000
2.0000 .8900
3.0000 .6500
6.0000 .3830
12.0000 .2330
24.0000 .1250
Type.... I-D-F Table
Name.... 10-yr IDF Table Tag: 10-yr Event: 10 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 10-yr IDF Table Tag: 10-yr
Rainfall-Intensity-Duration Curve
Time, hrs
----------- Intens., in/hr
-----------
.0833 7.2200
.1670 6.1300
.2500 5.2500
.3300 4.6400
.5000 3.7100
.6670 3.1500
.8330 2.7100
1.0000 2.4100
1.5000 1.7400
2.0000 1.3700
3.0000 1.0200
6.0000 .6500
12.0000 .3900
24.0000 .2200
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 PM Date: 1/29/2004
1
1
1
S
1
1
1
1
1
1
1
1
1
1
1
1
1
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #3
Type.... I-D-F Table Page 2.02
Name.... 25-yr IDF Table Tag: 25-yr Event: 25 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 25-yr IDF Table Tag: 25-yr
Rainfall-Intensity-Duration Curve
Time, hrs
----------- Intens., in/hr
-----------
.0833 8.1900
.1670 7.0100
.2500 6.0300
.3300 5.4200
.5000 4.3200
.6670 3.7000
.8330 3.1900
1.0000 2.8400
1.5000 2.0600
2.0000 1.6200
3.0000 1.2100
6.0000 .7700
12.0000 .4600
24.0000 .2700
Type.... I-D-F Table
Name.... 100-yr IDF Table Tag: 100-yr Event: 100 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 100-yr IDF Table Tag: 100-yr
Rainfall-Intensity-Duration Curve
Time, hrs
----------- Intens., in/hr
-----------
.0833 9.7200
.1670 8.4000
.2500 7.2400
.3330 6.4700
.5000 5.2800
.6670 4.4800
.8330 3.8800
1.0000 3.5000
1.5000 2.5300
2.0000 2.0000
3.0000 1.5000
6.0000 .9600
12.0000 .5700
24.0000 .3300
S/17: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 3:35 P14
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##3
Type.... Tc Calcs Page 3.01
Name.... POST AREA 3 Tag: POST
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #3 JAN04.PPW
........................................................................
........................................................................
TIME OF CONCENTRATION CALCULATOR
........................................................................
........................................................................
Segment #1: Tc: User Defined
Segment #1 Time: .0833 hrs
------------------------------------------------------------------------
Total Tc: .0833 hrs
Calculated Tc < Min.Tc:
Use Minimum Tc...
Use Tc = .0833 hrs
-------------------------
-------------------------
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 PM Date: 1/29/2004
CARRA14ORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND 413
Type.... Vol: Elev-Area Page 4.01
Name.... POND #3
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #3_JAN04.PPW
Elevation Planimeter Area Al+A2+sgr(Al*A2) Volume Volume Sum
(ft) (sq.in) (acres)
- (acres)
----------------- (ac-ft)
--------- (ac-ft)
-------------
------------
374.00 --------------------
----- .0253 .0000 .000 .000
376.00 ----- .0526 .1144 .076 .076
378.00 ----- .0869 .2071 .138 .214
380.00 ----- .1281 .3205 .214 .428
382.00 ----- .1758 .4540 .303 .731
384.00 ----- .2287 .6050 .403 1.134
POND VOLUME EQUATIONS
* Incremental volume computed by the Conic Method for Reservoir Volumes.
Volume = (1/3) * (EL2-EL1) * (Areal + Area2 + sq.rt.(Areal*Area2))
where: EL1, EL2 = Lower and upper elevations of the increment
Areal,Area2 = Areas computed for EL1, EL2, respectively
Volume = Incremental volume between EL1 and EL2
5/14: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 P14 Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ;#3
Type.... Outlet Input Data Page 5.01
Name.... Outlet B
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #3 JAN04.PPW
REQUESTED POND WS ELEVATIONS:
Min. Elev.= 374.00 ft
Increment = .10 ft
Max. Elev.= 384.00 ft
OUTLET CONNECTIVITY
---> Forward Flow Only (UpStream to DnStream)
<--- Reverse Flow Only (DnStream to UpStream)
<---> Forward and Reverse Both Allowed
Structure No. Outfall E1, ft E2, ft
User Defined Table SK ---> TW .000 384.000
Inlet Box RI ---> CV 382.000 384.000
Culvert-Circular CV ---> TW 374.000 384.000
TW SETUP, DS Channel
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #3
Type.... Outlet Input Data Page 5.02
Name.... Outlet B
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND 43_JAN04.PPW
OUTLET STRUCTURE INPUT DATA
Structure ID = SK
Structure Type = User Defined Table
------------------------------------
ELEV-FLOW RATING TABLE
Elev, ft Flow, cfs
--------- ---------
374.00 .00
377.99 .00
378.00 .02
384.00 .02
Structure ID = RI
Structure Type = Inlet Box
-------------
------
-----------------
# of Openings = 1
Invert Elev. = 382.00 ft
Orifice Area = 16.0000 sq.ft
Orifice Coeff. _ .600
Weir Length = 16.00 ft
Weir Coeff. = 3.100
K, Submerged = .000
K, Reverse = 1.000
Kb,Barrel = .000000 (per ft of full flow)
Barrel Length = .00 ft
Mannings n = .0000
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #$3
Type.... Outlet Input Data Page 5.03
Name.... Outlet B -
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #3 JAN04.PPW
OUTLET STRUCTURE INPUT DATA
Structure ID = CV
Structure Type =
---------- Culvert-Circular
---------------
No. Barrels = 1
Barrel Diameter = 1.5000 ft
Upstream Invert = 374.00 ft
Dnstream Invert = 366.00 ft
fforiz. Length = 230.00 ft
Barrel Length = 230.14 ft
Barrel Slope = .03478 ft/ft
OUTLET CONTROL DATA ...
Mannings n = .0130
Ke = .5000 (forward entrance loss)
Kb = .018213 (per ft of full flow)
Kr = .5000 (reverse entrance loss)
HW Convergence = .001 +/- ft
INLET CONTROL DATA. ..
Equation form = 1
Inlet Control K = .0098
Inlet Control M = 2.0000
Inlet Control c = .03980
Inlet Control Y = .6700
T1 ratio (11W/D) = 1.143
T2 ratio (HW/D) = 1.289
Slope Factor = -.500 _
Use unsubmerged inlet control Form 1 equ. below T1 elev.
Use submerged inlet control Form 1 equ. above T2 elev.
In transition zone between unsubmerged and submerged inlet control,
interpolate between flows at Tl & T2...
At Tl Elev = 375.71 ft ---> Flow = 7.58 cfs
At T2 Elev = 375.93 ft ---> Flow = 8.66 cfs
Structure ID = TW
Structure Type = TW SETUP, DS Channel
------------------------------------
FREE OUTFALL CONDITIONS SPECIFIED
CONVERGENCE TOLERANCES...
Maximum Iterations= 30
Min. TW tolerance = .01 ft
Max. TW tolerance = .01 ft
Min. HW tolerance = .01 ft
Max. HW tolerance = .01 ft
Min. Q tolerance = .10 cfs
Max. Q tolerance = .10 cfs
SIN: 22160372E1c5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##3
Type.... Composite Rating Curve
Name.... Outlet B
Page 5.04
1 File.... K:\03\03-300\03300\H&11\PondPack\CARRAMORE POND #3_JAN04.PFW
***** COMPOSITE OUTFLOW SUMMARY ****
WS Elev, Total Q Notes
-------- -------- ------ -- Converge ----- --- -----------------
Elev. Q TW El ev Error
ft cfs ft +/-ft Contributing Structures
----------------------
--------
374.00 -------
.00 ------
Free -- -----
Outfall ----
(no Q: SK,RI,CV)
374.10 .00 Free Outfall (no Q: SK,RI,CV)
374.20 .00 Free Outfall (no Q: SK,RI,CV)
t 374.30
374.40 .00
.00 Free
Free Outfall
Outfall (no
(no Q:
Q: SK,RI,CV)
SK,RI,CV)
374.50 .00 Free Outfall (no Q: SK,RI,CV)
374.60 .00 Free Outfall (no Q: SK,RI,CV)
374.70 .00 Free Outfall (no Q: SK,RI,CV)
374.80 .00 Free Outfall (no Q: SK,RI,CV)
374.90 .00 Free Outfall (no Q: SK,RI,CV)
375.00 .00 Free Outfall (no Q: SK,RI,CV)
1 375.10 .00 Free Outfall (no Q: SK,RI,CV)
375.20 .00 Free Outfall (no Q: SK,RI,CV)
375.30 .00 Free Outfall (no Q: SK,RI,CV)
375.40 .00 Free Outfall (no Q: SK,RI,CV)
375.50 .00 Free Outfall (no Q: SK,RI,CV)
375.60 .00 Free Outfall (no Q: SK,RI,CV)
375.70 .00 Free Outfall (no Q: SK,RI,CV)
375.80 .00 Free Outfall (no Q: SK,RI,CV)
375.90 .00 Free Outfall (no Q: SK,RI,CV)
376.00 .00 Free Outfall (no Q: SK,RI,CV)
376.10 .00 Free Outfall (no Q: SK,RI,CV)
376.20 .00 Free Outfall (no Q: SK,RI,CV)
376.30 .00 Free Outfall (no Q: SK,RI,CV)
376.40 .00 Free Outfall (no Q: SK,RI,CV)
376.50 .00 Free Outfall (no Q: SK,RI,CV)
376.60 .00 Free Outfall (no Q: SK,RI,CV)
376.70 .00 Free Outfall (no Q: SK,RI,CV)
376.80 .00 Free Outfall (no Q: SK,RI,CV)
376.90 .00 Free Outfall (no Q: SK,RI,CV)
377.00 .00 Free Outfall (no Q: SK,RI,CV)
377.10 .00 Free Outfall (no Q: SK,RI,CV)
377.20 .00 Free Outfall (no Q: SK,RI,CV)
377.30 .00 Free Outfall (no Q: SK,RI,CV)
377.40 .00 Free Outfall (no Q: SK,RI,CV)
377.50 .00 Free Outfall (no Q: SK,RI,CV)
377.60 .00 Free Outfall (no Q: SK,RI,CV)
377.70 .00 Free Outfall (no Q: SK,RI,CV)
Withers & Ravenel
S/N: 22160372E1C5
PondPack Ver. 9.0029 Time: 3:35 P[4
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #3
Type.... Composite Rating Curve
Name.... Outlet B
Page 5.05
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #3 JAN04.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
WS Elev, Total Q Notes
-------- -------- ----- --- Converge ---- --- --- ---------------
Elev. Q TW Elev Error
ft cfs ft +/-ft Cont ributi ng Structures
--------
377.80 -------
.00 -----
Free --- -----
Outfall -----
(no ---
Q: ---
SK ---------------
,RI,CV)
377.90 .00 Free Outfall (no Q: SK ,RI,CV)
378.00 .02 Free Outfall SK (no Q: RI,CV)
378.10 .02 Free Outfall SK (no Q: RI,CV)
378.20 .02 Free Outfall SK (no Q: RI,CV)
378.30 .02 Free Outfall SK (no Q: RI,CV)
378.40 .02 Free Outfall SK (no Q: RI,CV)
378.50 .02 Free Outfall SK (no Q: RI,CV)
378.60 .02 Free Outfall SK (no Q: RI,CV)
378.70 .02 Free Outfall SK (no Q: RI,CV)
378.80 .02 Free Outfall SK (no Q: RI,CV)
378.90 .02 Free Outfall SK (no Q: RI,CV)
379.00 .02 Free Outfall SK (no Q: RI,CV)
379.10 .02 Free Outfall SK (no Q: RI,CV)
379.20 .02 Free Outfall SK (no Q: RI,CV)
379.30 .02 Free Outfall SK (no Q: RI,CV)
379.40 .02 Free Outfall SK (no Q: RI,CV)
379.50 .02 Free Outfall SK (no Q: RI,CV)
379.60 .02 Free Outfall SK (no Q: RI,CV)
379.70 .02 Free Outfall SK (no Q: RI,CV)
379.80 .02 Free Outfall SK (no Q: RI,CV)
379.90 .02 Free Outfall SK (no Q: RI,CV)
380.00 .02 Free Outfall SK (no Q: RI,CV)
380.10 .02 Free Outfall SK (no Q: RI,CV)
380.20 .02 Free Outfall SK (no Q: RI,CV)
380.30 .02 Free Outfall SK (no Q: RI,CV)
380.40 .02 Free Outfall SK (no Q: RI,CV)
380.50 .02 Free Outfall SK (no Q: RI,CV)
380.60 .02 Free Outfall SK (no Q: RI,CV)
380.70 .02 Free Outfall SK (no Q: RI,CV)
380.80 .02 Free Outfall SK (no Q: RI,CV)
380.90 .02 Free Outfall SK (no Q: RI,CV)
381.00 .02 Free Outfall SK (no Q: RI,CV)
381.10 .02 Free Outfall SK (no Q: RI,CV)
381.20 .02 Free Outfall SK (no Q: RI,CV)
381.30 .02 Free Outfall SK (no Q: RI,CV)
381.40 .02 Free Outfall SK (no Q: RI,CV)
381.50 .02 Free Outfall SK (no Q: RI,CV)
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 PM
C
Date: 1/29/2004 1
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #3
Type.... Composite Rating Curve
Name.... Outlet B
Page 5.06
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #3_JAN04.PPW
***** COMPOSITE OUTFLOW SUMMARY ****
WS Elev, Total Q Notes
-------- -------- ------ -- Converge ---------- ---------------
Elev. Q TW El ev Error
ft
- cfs ft +/-ft
-- Contributing Structures
--------------------------
--------
381.60 -------
.02 ------
Free -- ---
Outfall SK (no Q: RI,CV)
381.70 .02 Free Outfall SK (no Q: RI,CV)
381.80 .02 Free Outfall SK (no Q: RI,CV)
381.90 .02 Free Outfall SK (no Q: RI,CV)
382.00 .02 Free Outfall SK (no Q: RI,CV)
382.10 1.59 Free Outfall SK,RI,CV
382.20 4.46 Free Outfall SK,RI,CV
382.30 8.17 Free Outfall SK,RI,CV
382.40 12.57 Free Outfall SK,RI,CV
382.50 17.56 Free Outfall SK,RI,CV
382.60 23.11 Free Outfall SK,RI,CV
382.70 23.19 Free Outfall SK,RI,CV
382.80 23.27 Free Outfall SK,RI,CV
382.90 23.34 Free Outfall SK,RI,CV
383.00 23.42 Free Outfall SK,RI,CV
383.10 23.49 Free Outfall SK,RI,CV
383.20 23.57 Free Outfall SK,RI,CV
383.30 23.64 Free Outfall SK,RI,CV
383.40 23.72 Free Outfall SK,RI,CV
383.50 23.79 Free Outfall SK,RI,CV
383.60 23.87 Free Outfall SK,RI,CV
383.70 23.94 Free Outfall SK,RI,CV
383.80 24.02 Free Outfall SK,RI,CV
383.90 24.09 Free Outfall SK,RI,CV
384.00 24.16 Free Outfall SK,RI,CV
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 PM
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #3
Type.... Pond E-V-Q Table Page 6.01
Name.... POND #3
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #3 JAN04.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\03\03-300\03300\H&H\PondPack\
Inflow HYG file = NONE STORED - POND #3 IN 1-yr
Outflow HYG file = NONE STORED - POND #3 OUT 1-yr
Pond Node Data = POND #3
Pond Volume Data = POND #3
Pond Outlet Data = Outlet B
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 378.00 ft
Starting Volume = .214 ac- ft
Starting Outflow = .02 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .02 cfs
Time Increment = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + 0
ft
- cfs ac-ft acres cfs cfs
----- cfs
--------
-
-
-----------
374.00 ------------
.00 ---------
.000 --- --------
.0253 -----------
.00 -------
.00 -
.00
374.10 .00 .003 .0264 .00 .00 6.26
374.20 .00 .005 .0276 .00 .00 12.80
374.30 .00 .008 .0288 .00 .00 19.61
374.40 .00 .011 .0300 .00 .00 26.72
374.50 .00 .014 .0312 .00 .00 34.12
374.60 .00 .017 .0325 .00 .00 41.82
374.70 .00 .021 .0337 .00 .00 49.83
374.80 .00 .024 .0350 .00 .00 58.15
374.90 .00 .028 .0364 .00 .00 66.79
375.00 .00 .031 .0377 .00 .00 75.75
375.10 .00 .035 .0391 .00 .00 85.04
375.20 .00 .039 .0405 .00 .00 94.67
375.30 .00 .043 .0419 .00 .00 104.64
375.40 .00 .048 .0434 .00 .00 114.96
375.50 .00 .052 .0448 .00 .00 125.64
375.60 .00 .056 .0463 .00 .00 136.67
375.70 .00 .061 .0479 .00 .00 148.08
375.80 .00 .066 .0494 .00 .00 159.85
375.90 .00 .071 .0510 .00 .00 172.00
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #3
Type.... Pond E-V-Q Table Page 6.02
Name.... POND #3
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #3_JAN0 4.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\03\03-300\03300\H&H\PondPack\
Inflow 11YG file = NONE STORED - POND #3 IN 1-yr
Outflow HYG file = NONE STORED - POND #3 OUT 1-yr
Pond Nod e Data = POND #3
Pond Vol ume Data = POND #3
Pond Out let Data = Outlet B
No Infil tration
INITIAL CONDITIONS
Starting WS Elev = 37-8--.0-0- -ft---
Starting Volume = .214 ac-ft
Starting Outflow .02 cfs
Starting Infiltr. .00 cfs
Starting Total Qout = .02 cfs
Time Inc rement = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + 0
ft
------------ cfs
--- ac-ft acres cfs cfs cfs

376.00 --------
.00 -----------
.076 -------------
.0526 -----------
.00 --------
.00 ------------
184.53
376.10 .00 .082 .0541 .00 .00 197.45
376.20 .00 .087 .0556 .00 .00 210.73
376.30 .00 .093 .0572 .00 .00 224.38
376.40 .00 .099 .0588 .00 .00 238.41
376.50 .00 .104 .0604 .00 .00 252.83
376.60 .00 .111 .0620 .00 .00 267.63
376.70 .00 .117 .0636 .00 .00 282.83
376.80 .00 .123 .0653 .00 .00 298.43
376.90 .00 .130 .0670 .00 .00 314.43
377.00 .00 .137 .0687 .00 .00 330.85
377.10 .00 .144 .0704 .00 .00 347.68
377.20 .00 .151 .0722 .00 .00 364.93
377.30 .00 .158 .0739 .00 .00 382.60
377.40 .00 .166 .0757 .00 .00 400.71
377.50 .00 .173 .0775 .00 .00 419.25
377.60 .00 .181 .0794 .00 .00 438.23
377.70 .00 .189 .0812 .00 .00 457.66
377.80 .00 .197 .0831 .00 .00 477.53
377.90 .00 .206 .0850 .00 .00 497.87
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 P14 Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #3
Type.... Pond E-V-Q Table Page 6.03
Name.... POND #3
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #3 JAN04.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\03\03-300\03300\H&H\PondPack\
Inflow HYG file = NONE STORED - POND #3 IN 1-yr
Outflow HYG file = NONE STORED - POND #3 OUT 1-yr
Pond Node Data = POND #3
Pond Volume Data = POND #3
Pond Outlet Data = Outlet B
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 378.00 ft
Starting Volume = .214 ac-ft
Starting Outflow = .02 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .02 cfs
Time Increment = .0100 hrs
Elevation Outflow
ft
-- cfs
---------
378.00 ---------
.02
378.10 .02
378.20 .02
378.30 .02
378.40 .02
378.50 .02
378.60 .02
378.70 .02
378.80 .02
378.90 .02
379.00 .02
379.10 .02
379.20 .02
379.30 .02
379.40 .02
379.50 .02
379.60 .02
379.70 .02
379.80 .02
379.90 .02
SIN: 22160372E1C5
PondPack Ver. 9.0029
Storage Area
ac-ft acres
.214
.223
.232
.241
.251
.260
.270
.280
.290
.300
.311
.322
.333
.344
.355
.367
.379
.391
.403
.415
.0869
.0888
.0907
.0926
.0945
.0965
.0984
.1004
.1024
.1045
.1065
.1086
.1107
.1128
.1149
.1171
.1192
.1214
.1236
.1259
Infilt.
cfs
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
Withers & Ravenel
Time: 3:35 PM
Q Total 2S/t + 0
cfs cfs
.02 518.69
.02 539.95
.02 561.66
.02 583.82
.02 606.46
.02 629.57
.02 653.15
.02 677.21
.02 701.74
.02 726.78
.02 752.31
.02 778.33
.02 804.86
.02 831.89
.02 859.44
.02 887.51
.02 916.10
.02 945.22
.02 974.86
.02 1005.05
Date: 1/29/2009
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #3
Type.... Pond E-V-Q Table Page 6.04
Name.... POND #3
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #3_JAN04.PPW
LEVEL POOL ROUTING DATA
J
7
7
7

J

J
J
HYG Dir = K:\03\03-300\03300\H&H\PondPack\
Inflow HYG file = NONE STORED - POND #3 IN 1-yr
Outflow HYG file = NONE STORED - POND #3 OUT 1-yr
Pond Node Data = POND #3
Pond Volume Data = POND #3
Pond Outlet Data = Outlet B
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 378.00 ft
Starting Volume = .214 ac- ft
Starting Outflow = .02 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .02 cfs
Time Increment = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + 0
ft cfs ac-ft acres cfs cfs
--------- cfs
----------
------------
380.00 -------------
.02 ---------
.428 --- --------
.1281 -----------
.00 ---
.02 1035.77
380.10 .02 .441 .1303 .00 .02 1067.04
380.20 .02 .454 .1325 .00 .02 1098.85
380.30 .02 .467 .1348 .00 .02 1131.18
380.40 .02 .481 .1370 .00 .02 1164.07
380.50 .02 .495 .1393 .00 .02 1197.52
380.60 .02 .509 .1416 .00 .02 1231.51
380.70 .02 .523 .1439 .00 .02 1266.06
380.80 .02 .538 .1463 .00 .02 1301.17
380.90 .02 .552 .1486 .00 .02 1336.86
381.00 .02 .567 .1510 .00 .02 1373.12
381.10 .02 .583 .1534 .00 .02 1409.95
381.20 .02 .598 ..1558 .00 .02 1447.37
381.30 .02 .614 .1582 .00 .02 1485.36
381.40 .02 .630 .1607 .00 .02 1523.96
381.50 .02 .646 .1632 .00 .02 1563.15
381.60 .02 .662 .1657 .00 .02 1602.94
381.70 .02 .679 .1682 .00 .02 1643.33
381.80 .02 .696 .1707 .00 .02 1684.32
381.90 .02 .713 .1732 .00 .02 1725.94
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 P14
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMNATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #3
Type.... Pond E-V-Q Table Page 6.05
Name.... POND #3
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #3_JAN04.PPW
LEVEL POOL ROUTING DATA
HYG Dir = K:\03\03-300\03300\H&H\PondPack\
Inflow HYG file = NONE STORED - POND #3 IN 1-yr
Outflow HYG file = NONE STORED - POND #3 OUT 1-yr
Pond Node Data = POND #3
Pond Volume Data = POND #3
Pond Outlet Data = Outlet B
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 378.00 ft
Starting Volume = .214 ac- ft
Starting Outflow = .02 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .02 cfs
Time Increment = .0100 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + O
ft cfs ac-ft acres cfs cfs
--- cfs
----------
------------
382.00 ------------
.02 ----------
.731 --- --------
.1758 -----------
.00 ---------
.02 1768.17
382.10 1.59 .748 .1783 .00 1.59 1812.59
382.20 4.46 .766 .1808 .00 4.46 1858.91
382.30 8.17 .784 .1833 .00 8.17 1906.66
382.40 12.57 .803 .1858 .00 12.57 1955.72
382.50 17.56 .822 .1884 .00 17.56 2005.99
382.60 23.11 .841 .1909 .00 23.11 2057.45
382.70 23.19 .860 .1935 .00 23.19 2104.05
382.80 23.27 .879 .1961 .00 23.27 2151.26
382.90 23.34 .899 .1987 .00 23.34 2199.12
383.00 23.42 .919 .2014 .00 23.42 2247.61
383.10 23.49 .939 .2040 .00 23.49 2296.75
383.20 23.57 .960 .2067 .00 23.57 2346.52
383.30 23.64 .981 .2094 .00 23.64 2396.93
383.40 23.72 1.002 .2121 .00 23.72 2448.01
383.50 23.79 1.023 .2148 .00 23.79 2499.75
383.60 23.87 1.045 .2176 .00 23.87 2552.14
383.70 23.94 1.067 .2203 .00 23.94 2605.20
383.80 24.02 1.089 .2231 .00 24.02 2658.92
383.90 24.09 1.111 .2259 .00 24.09 2713.32
384.00 24.16 1.134 .2287 .00 24.16 2768.40
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND 113
Type.... Mod. Rational Storm Calcs Page 7.01
Name.... POST AREA 3 Tag: 1-yr Event: 1 yr
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #3_JAN04.PPW
Storm... 1-yr IDF Table Tag: 1-yr
MODIFIED RATIONAL METHOD
---- Summary for Single Storm Frequency ----
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)
RETURN
------ FREQUENCY:
----------- 1 yr 'C'
---------- Adjustment
----------- = 1.000Allowable
------------------- Q = .50 cfs
-----------
--------
Hydrograph Storm Duration, Td = .8500 hrs Tc = .0833 hrs
Hydrograph File: 1-yr
...... ........... .......... ........... ........ ..... VOLUMES
Wtd. Adjusted Duration Intens. Area Qpeak I Inflow Storage
'C' 'C' hrs in/hr acres cfs I ac-ft
----------- ac-ft
--------
------
.400 -----------
.400 ----------
.0833 -----------
5.1000 --------
2.500 -------- I --
5.15 1 .035 .032
.400 .400 .1667 4.2036 2.500 4.24 1 .058 .053
.400 .400 .2500 3.5000 2.500 3.53 1 .073 .066
.400 .400 .3333 2.9988 2.500 3.03 1 .083 .075
.400 .400 .5000 2.3800 2.500 2.40 1 .099 .087
.400 .400 .6667 2.0867 2.500 2.11 1 .116 .101
.400 .400 .8333 1.7933 2.500 1.81 1 .125 .106
******************************************************* Storage Maximum
.400 .400 .8500 1.7640 2.500 1.78 1 .125 .106
.400 .400 1.0000 1.5000 2.500 1.51 1 .125 .103
.400 .400 2.0000 .8900 2.500 .90 1 .148 .105
.400 .400 3.0000 .6500 2.500 .66 1 .163 .099
.400 .400 4.0000 .5610 2.500 .57 1 .187 .103
.400 .400 5.0000 .4720 2.500 .48 1 Qpeak < Qallow
SIN: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 3:35 P14
Date: 1/29/2004
I?
CARRAMORE PUD PHASE I - STORMNATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #3
Type.... C and Area Page 7.02
Name.... POST AREA 3 Tag: POST
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND 43 JAN04.PPW
RATIONAL C COEFFICIENT DATA
Area C x Area
Soil/Surface Description C acres acres
-------------------------------- -------- ---------- ----------
Residential 2 - 3 du/acre .4250 2.200 .935
Pond Area .2200 .300 .066
WEIGHTED C & TOTAL AREA ---> .4004 2.500 1.001
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND ##3
Type. ... Mod. R ational Storm Calcs Pag e 7.03
Name. ... POST A REA 3 Tag: 10-yr Event: 10 yr
File. ... K:\03\ 03-300\03300\H&H\PondPa ck\CARRAMORE POND #3 _JAN04.P PW
Storm ... 10-yr IDF Table Tag: 10-yr
MODIFIED RATI ONAL METHOD
---- Summary for Single Storm Frequency --- -

RETURN
------ Q = CiA *
FREQUENCY
---------- Units Conversion; Wher
: 10 yr 'C' Adjustment
----------------------- e Conversion = 43560
= 1.000Allowable Q
-------------------- / (12 *
= 1.00
-------- 3600)
cfs
---------
Hydrog raph Storm Duration, Td = 1.2167 hrs Tc = .0833 h rs
Hydrog raph File: 10-yr
......
.: VOLU MES
Wtd. Adjusted Duration Intens. A rea Qpeak I I nflow Storage
'Cl Oct hrs in/hr acres cfs I ac-ft ac-ft

.400
.400
.0833 7.2200
2.500 I ----
7.29 1 --------
.050 ---------
.043
.400 .400 .1667 6.1343 2.500 6.19 1 .085 .075
.400 .400 .2500 5.2500 2.500 5.30 1 .109 .096
1 .400 .400 .3333 4.6218 2.500 4.66 1 .129 .111
.400 .400 .5000 3.7100 2.500 3.74 1 .155 .131
400 .400 .6667 3.1511 2.500 3.18 1 .175 .144
.400 .400 .8333 2.7094 2.500 2.73 1 .188 .150
.400 .400 1.0000 2.4100 2.500 2.43 1 .201 .156
****** ********** *****************+**** ****** ************** * Storag e Maximum
400 .400 1.2167 2.1197 2.500 2.14 1 .215 .161
****** ********** *********************** ****** ************** ******** *********
.400
.400 .400
.400 2.0000 1.3700
3.0000 1.0200 2.500
2.500 1.38 1
1.03 1 .229
.255 .142
.128
.400 .400 4.0000 .8967 2.500 .91 1 Qpeak < Qallow
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 PM Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND #3
Type.... Mod. Rational Storm Calcs Page 7.04
Name.... POST AREA 3 Tag: 25-yr Event: 25 yr
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #3_JAN04.PPW
Storm... 25-yr IDF Table Tag: 25-yr
MODIFIED RATIONAL METHOD
---- Summary for Single Storm Frequency ----
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)
RETURN
------ FREQUENCY:
----------- 25 yr 'C' Adjustment = 1.000Allowable
----------------------------------------- Q = 1.25
--------- cfs
---------
Hydrograph Storm Duration, Td = 1.2167 hrs Tc = .0833 hrs
Hydrograph File: 25-yr
VOLUMES
Wtd. Adjusted Duration Intens. Area Qpeak I Inflow Storage
'C'
------- 'C'
------- hrs in/hr acres cfs I ac-ft ac-ft

.400 ---
.400 ---------
.0833 ------------
8.1900 --------
2.500 -------- ---
8.27 1 ---------
.057 ---------
.048
.400 .400 .1667 7.0147 2.500 7.08 1 .098 .085
.400 .400 .2500 6.0300 2.500 6.09 1 .126 .109
.400 .400 .3333 5.3984 2.500 5.45 1 .150 .129
.400 .400 .5000 4.3200 2.500 4.36 1 .180 .150
.400 .400 .6667 3.7012 2.500 3.74 1 .206 .167
.400 .400 .8333 3.1893 2.500 3.22 1 .222 .174
.400 .400 1.0000 2.8400 2.500 2.87 1 .237 .181
************************************************************ Storage Maximum
400 .400 1.2167 2.5020 2.500 2.53 1 .254 .187
****************************************************************************
.400 .400 2.0000 1.6200 2.500 1.64 1 .270 .163
.400 .400 3.0000 1.2100 2.500 1.22 1 Qpeak < Qallow
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 3:35 PM Date: 1/29/2004
i
J
i
7
J
1
L
u
GARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POND 113
Type.... Mod. Rational Storm Calcs Page 7.05
Name.... POST AREA 3 Tag: 100-yr Event: 100 yr
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #3_JAN04.PPW
Storm... 100-yr IDF Table Tag: 100-yr
MODIFIED RATIONAL METHOD
---- Summary for Single Storm Frequency ----
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)
RETURN
------ FREQUENCY:
----------- 100 yr
--------- 'C' Adjustment =
------------------ 1.000Allowable
-------------- Q = 1.75
---------- cfs
--------
Hydrograph Storm Duration, Td = 1.1833 hrs Tc = .0833 hrs
Hydrograph File:
................. 100-yr
.........
............
......
..............
..........
........
VOLUMES
Wtd. Adjusted Duration Intens. Area Qpeak I Inflow Storage
'Cl 'C' hrs in/hr
-- acres
-
--- cfs I
--
--
- --- ac-ft
---------- ac-ft
--------
-------
.400 ----------
.400 ---------
.0833 ----------
9.7200 -
-
2.500 -
-
---
9.81 1 .068 .055
.400 .400 .1667 8.4053 2.500 8.48 1 .117 .099
.400 .400 .2500 7.2400 2.500 7.31 ( .151 .127
.400 .400 .3333 6.4676 2.500 6.53 1 .180 .150
.400 .400 .5000 5.2800 2.500 5.33 1 .220 .178
.400 .400 .6667 4.4816 2.500 4.52 1 .249 .195
.400 .400 .8333 3.8792 2.500 3.92 1 .270 .203
.400 .400 1.0000 3.5000 2.500 3.53 1 .292 .214
***************** ********* ************ ****** ************** ** Storage Maximum
.400 .400 1.1833 3.1443 2.500 3.17 1 .310 .219

.400 .400 2.0000 2.0000 2.500 2.02 1 .334 .183
.400 .400 3.0000 1.5000 2.500 1.51 1 Qpeak < Qallow
SIN: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 3:35 P14
Date: 1/29/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POST DEVELOPMENT CONDITIONS
Job File: K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
Rain Dir: K:\03\03-300\03300\H&H\PondPack\
JOB TITLE
Project Date: 1/28/04
Project Engineer: Withers and Ravenel
Project Title: Carramore PUD Phase I - Stormwater Management
This report documents post development peak discharge rates for the Other Area South,
Other Area North, and Area #1 Overland Flow drainage areas in Carramore PUD Phase I.
S/24: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 12:47 PI4
Date: 1/28/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POST DEVELOPMENT CONDITIONS
Table of Contents
i
Table of Contents
********************** RAINFALL DATA ***********************
1-year IDF......
10-year IDF.....
25-year IDF.....
100-year IDF....
1-yr
I-D-F Table ........................ 1.01
10-yr
I-D-F Table ........................ 1.01
25-yr
I-D-F Table ........................ 1.02
100-yr
I-D-F Table ........................ 1.02
********************** TC CALCULATIONS *********************
POST OTHER SOUTH Tc Calcs ........................... 2.01
POST OTHER NORTH Tc Calcs ........................... 2.02
DA #1 OVERLAND.. Tc Calcs ........................... 2.03
****************** RATIONAL METHOD CALCS *******************
POST OTHER SOUTH C and Area ......................... 3.01
Rational Peak Q's .................. 3.02
POST OTHER NORTH C and Area ......................... 3.03
Rational Peak Q's .................. 3.04
DA #1 OVERLAND.. C and Area ......................... 3.05
Rational Peak Q's .................. 3.06
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 12:47 PM Date: 1/28/2004
s
i
i
i
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POST DEVELOPMENT CONDITIONS
Type.... I-D-F Table Page 1.01
Name.... 1-year IDF Tag: 1-yr Event: 1 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 1-year IDF Tag: 1-yr
Rainfall-Intensity-Duration Curve
Time, hrs
----------- Intens., in/hr
-----------
.0830 5.1000
.1670 4.2000
.2500 3.5000
.3330 3.0000
.5000 2.3800
1.0000 1.5000
2.0000 .8900
3.0000 .6500
6.0000 .3830
12.0000 .2330
24.0000 .1250
Type.... I-D-F Table
Name.... 10-year IDF Tag: 10-yr Event: 10 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 10-year IDF Tag: 10-yr
Rainfall-Intensity-Duration Curve
Time, hrs
----------- Intens., in/hr
-----------
.0830 7.2200
.1670 6.1300
.2500 5.2500
.3300 4.6400
.5000 3.7100
.6670 3.1500
.8330 2.7100
1.0000 2.4100
1.5000 1.7400
2.0000 1.3700
3.0000 1.0200
6.0000 .6500
12.0000 .3900
24.0000 .2200
SIN: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 12:47 PM
Date: 1/28/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POST DEVELOPMENT CONDITIONS
Type.... I-D-F Table Page 1.02
Name.... 25-year IDF Tag: 25-yr Event: 25 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 25-year IDF Tag: 25-yr
Rainfall-Intensity-Duration Curve
Time, hrs
----------- Intens., in/hr
-----------
.0830 8.1900
.1670 7.0100
.2500 6.0300
.3300 5.4200
.5000 4.3200
.6670 3.7000
.8330 3.1900
1.0000 2.8400
1.5000 2.0600
2.0000 1.6200
3.0000 1.2100
6.0000 .7700
12.0000 .4600
24.0000 .2700
Type.... I-D-F Table
Name.... 100-year IDF Tag: 100-yr Event: 100 yr
File.... K:\03\03-300\03300\H&H\PondPack\
Storm... 100-year IDF Tag: 100-yr
Rainfall-Intensity-Duration Curve
Time, hrs
----------- Intens., in/hr
-----------
.0830 9.7200
.1670 8.4000
.2500 7.2400
.3330 6.4700
.5000 5.2800
.6670 4.4800
.8330 3.8800
1.0000 3.5000
1.5000 2.5300
2.0000 2.0000
3.0000 1.5000
6.0000 .9600
12.0000 .5700
24.0000 .3300
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 12:47 PM Date: 1/28/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POST DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.01
Name.... POST OTHER SOUTH
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
TIME OF CONCENTRATION CALCULATOR
Segment #1: Tc: User Defined
Segment 41 Time: .0833 hrs
------------------------------------------------------------------------
Total Tc: .0833 hrs
Calculated Tc < Min.Tc:
Use Minimum Tc...
Use Tc = .0833 hrs
SIN: 22160372E1C5 Withers & Ravenel
PcndPack Ver. 9.0029 Time: 12:97 P14 Date: 1/28/2009
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POST DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.02
Name.... POST OTHER NORTH
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
........................................................................
........................................................................
TIME OF CONCENTRATION CALCULATOR
........................................................................
........................................................................
Segment #1: Tc: User Defined
Segment #1 Time: .0833 hrs
------------------------------------------------------------------------
-------------------------
-------------------------
Total Tc: .0833 hrs
Calculated Tc < Min.Tc:
Use Minimum Tc...
Use Tc = .0833 hrs
-------------------------
-------------------------
SIN: 22160372EiC5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 12:47 PM Date: 1/28/2004
t
s
s
s
i
A
i
s
i
i
s
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POST DEVELOPMENT CONDITIONS
Type.... Tc Calcs Page 2.03
Name.... DA #1 OVERLAND
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
........................................................................
........................................................................
TIME OF CONCENTRATION CALCULATOR
........................................................................
Segment #1: Tc: User Defined
Segment #1 Time: .0833 hrs
------------------------------------------------------------------------
-------------------------
Total Tc: .0833 hrs
Calculated Tc < Min.Tc:
Use Minimum Tc...
Use Tc = .0833 hrs
SIN. 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 12:47 PM
Date: 1/28/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POST DEVELOPMENT CONDITIONS
Type.... C and Area Page 3.01
Name.... POST OTHER SOUTH
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
RATIONAL C COEFFICIENT DATA
.........................................................................
.........................................................................
Area C x Area
Soil/Surface Description C acres acres
-------------------------------- -------- ---------- ----------
Residential 3-4 du/acre .4750 3.000 1.425
WEIGHTED C & TOTAL AREA ---> .4750 3.000 1.425
.........................................................................
.........................................................................
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 12:47 PM Date: 1/28/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POST DEVELOPMENT CONDITIONS
Type... . Rational Peak Q's Page 3.02
Name... . POST OTHER SOUTH
File... . K:\03\03-300\03300\H&fi\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
SUMMARY OF RATIONAL METHOD PEAK DISCHARGES
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)
Rational Storms: Wake Co IDF Stor
Tag Freq File IDF Curve
-----
100-yr ------ ------------ ----------------
100 100-year IDF

Tag Tc = .0833 hrs
--
Freq C C adj I C I Area I

Peak Q
(years) factor I final in/hr acres I cfs

1-yr ----- ------ I ----------------------------- I
1 .475 1.000 1 .475 5.0968 3.000 I ----------
7.32
10-yr 10 .475 1.000 1 .475 7.2161 3.000 1 10.37
25-yr 25 .475 1.000 1 .475 8.1858 3.000 I 11.76
100-yr 100 .475 1.000 1 .475 9.7153 3.000 I
----------------------------- 13.96
S/N: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 12:47 PM
Date: 1/28/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POST DEVELOPMENT CONDITIONS
Type.... C and Area Page 3.03
Name.... POST OTHER NORTH
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
RATIONAL C COEFFICIENT DATA
.........................................................................
.........................................................................
Area C x Area
Soil/Surface Description C acres acres
-------------------------------- -------- ---------- ----------
Historic Site - Open Space .2200 1.050 .231
Residential 2-3 du/acre .4250 4.950 2.104
WEIGHTED C & TOTAL AREA ---> .3891 6.000 2.335
.........................................................................
.........................................................................
SIN: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 12:47 PM Date: 1/28/2004
s
s
s
s
s
i
1
1
1
1
1
1
1
1
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POST DEVELOPMENT CONDITIONS
Type.... Rational Peak Q's Page 3.04
Name.... POST OTHER NORTH
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
SUMMARY OF RATIONAL METHOD PEAK DISCHARGES
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)
Rational Storms: Wake Co IDF Stor
Tag Freq File IDF Curve
100-yr 100 100-year IDF
Tc = .0833 hrs
Tag Freq C C adj I C I Area I Peak Q
(years) factor I
----- I final
--------- in/hr
---------- acres I
----------1 cfs
----------
-----
1-yr ------
1 -----
.389 -
1.000 i .389 5.0968 6.000 1 12.00
10-yr 10 .389 1.000 1 .389 7.2161 6.000 1 16.99
25-yr 25 .389 1.000 1 .389 8.1858 6.000 I 19.27
100-yr 100 .389 1.000 1 .389
--------- 9.7153
---------- 6.000 I
---------- 22.87
SIN: 22160372E1C5
PondPack Ver. 9.0029
Withers & Ravenel
Time: 12:47 PM
Date: 1/28/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POST DEVELOPMENT CONDITIONS
Type.... C and Area Page 3.05
Name.... DA #1 OVERLAND
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST JAN04.PPW
RATIONAL C COEFFICIENT DATA
.........................................................................
.........................................................................
Area C x Area
Soil/Surface Description C acres acres
-------------------------------- -------- ---------- ----------
Woods/buffer Area .2000 1.450 .290
Residential 3 - 4 du/acre .4750 1.700 .808
WEIGHTED C & TOTAL AREA ---> .3484 3.150 1.098
.........................................................................
.........................................................................
5114: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 12:47 PM Date: 1/28/2004
CARRAMORE PUD PHASE I - STORMWATER MANAGEMENT PLAN
PONDPACK OUTPUT FOR POST DEVELOPMENT CONDITIONS
Type.... Rational Peak Q's Page 3.06
Name.... DA #1 OVERLAND
File.... K:\03\03-300\03300\H&H\PondPack\CARRAMORE POND #1 WEST_JAN04.PPW
SUM14ARY OF RATIONAL METHOD PEAK DISCHARGES
Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600)
Rational Storms: Wake Co IDF Stor
Tag Freq File IDF Curve
100-yr 100 100-year IDF
Tc = .0833 hrs
Tag Freq C C adj I C I Area I Peak Q
(years) factor I
---- I final
--------- in/hr
---------- acres I
----------I cfs
----------
-----
1-yr ------
1 -----
.348 --
1.000 I .348 5.0968 3.150 I 5.64
10-yr 10 .348 1.000 I .348 7.2161 3.150 I 7.99
25-yr 25 .348 1.000 I .348 8.1858 3.150 1 9.06
100-yr 100 .348 1.000 I .348
--------- 9.7153
---------- 3.150 1
---------- 10.75
5/t7: 22160372E1C5 Withers & Ravenel
PondPack Ver. 9.0029 Time: 12:47 P14 Date: 1/28/2004
Carramore PUD - Phase I W&R Project 203300
Stormwater Management Plan February 2004
Project Name: Carramore PUD Phase I Project #: 203300
City/State: Cary, NC Date: 28-Jan-04
Table 1.1 Surface Area to Drainage Area Ratio for Permanent Pool Sizing for 85% Pollutant
RPmnvat Fffirh-nrv in fho P;Pdmnnt
% Impervious
Cover Permanent Pool Dept
3.0 4.0 5.0 6.0 h (feet)
7.0 8.0 9.0
10 0.59 0.49 0.43 0.35 0.31 0.29 0.26
20 0.97 0.79 0.70 0.59 0.51 0.46 0.44
30 1.34 1.08 0.97 0.83 0.70 0.64 0.62
40 1.73 1.43 1.25 1.05 0.90 0.82 0.77
50 2.06 1.73 1.50 1.30 1.09 1.00 0.92
60 2.40 2.03 1.71 1.51 1.29 1.18 1.10
70 2.88 2.40 2.07 1.79 1.54 1.35 1.26
80 3.36 2.78 2.38 2.10 1.86 1.60 1.42
90 3.74 3.10 2.66 2.34 2.11 1.83 1.67
Source: NCDENR/DWQ Stormwater Best Management Practices, pg. 5, April 1999
POND #1 WEST - WET POND
Total Drainage Area = 17.1 ac
Estimated % Impervious Surface Area = 30.0 %
Surface Area of Permanent Pool:
Assumed depth = 4 feet
SA/DA ratio = 1.08 % From Table 1.1
Minimum pond surface area (SA) _ (DA * SA/DA ratio)/] 00
SA = 0.185 acres
8045 sq. ft.
Normal pool elevation = 350.0 feet
Surface area provided = E y 0.2_03acres
8834 sq. ft.
1-Inch Runoff Volume Calculation
Using the runoff volume calculations in the "Simple Method" as described by Schueler 0987)
Rv = 0.05 + 0.009(1) where, Rv = Runoff coefficient, in./in.
I - Percent impervious
Rv = 0.32 in./in.
Total runoff volume from 1-inch precipitation:
Runoff volume, S = (Design rainfall) (Rv) (Drainage Area)
S = 0.456 acre-ft
19863 cu. ft.
Minimum WQ Volume Elevation - 351.9 feet
WQ Volume Elevation Provided = 353.0 feet
Storage Volume Provided= 0.798 _ acre-ft
34774 cu. ft.
Proiect Name: Carramore PUD Phase 1 Project #: 203300
City/State: Cary, NC Date: 29-Jan-04
Table 1.1 Surface Area to Drainage Area Ratio for Permanent Pool Sizing for 85% Pollutant
Removal Efficiencv in the Piedmont
% Impervious
Cover Permanent Pool Dept
3.0 4.0 5.0 6.0 h (feet)
7.0 8.0 9.0
10 0.59 0.49 0.43 0.35 0.31 0.29 0.26
20 0.97 0.79 0.70 0.59 0.51 0.46 0.44
30 1.34 1.08 0.97 0.83 0.70 0.64 0.62
40 1.73 1.43 1.25 1.05 0.90 0.82 0.77
50 2.06 1.73 1.50 1.30 1.09 1.00 0.92
60 2.40 2.03 1.71 1.51 1.29 1.18 1.10
70 2.88 2.40 2.07 1.79 1.54 1.35 1.26
L 80 3.36 2.78 2.38 2.10 1.86 1.60 1.42
90 3.74 3.10 2.66 2.34 2.11 1.83 1.67
Source: NCDENR/DWQ Stormwater Best Management Practices, pg. 5, April 1999
POND #2 - WET POND (Small pond upstream of Riggsbee Farm)
Total Drainage Area = 3.0 ac
Estimated % Impervious Surface Area = 30.0 %
Surface Area of Permanent Pool:
Assumed depth = 4 feet
SA/DA ratio - 1.08 % from Table 1.1
Minimum pond surface area (SA) _ (DA * SA/DA ratio)/100
SA = 0.032 acres
1411 sq. ft.
Normal pool elevation = 384.0 feet
Surface area provided 0 tOtf .acres
4704 sq. ft.
1-Inch Runoff Volume Calculation
Using the runoff volume calculations in the "Simple Method" as described by Schueler 0 987)
Rv = 0.05 + 0.009(1) where, Rv - Runoff coefficient, in./in.
I = Percent impervious
Rv = 0.32 in./in.
Total runoff volume from 1-inch precipitation:
Runoff volume, S - (Design rainfall) (Rv ) (Drainage Area)
S = 0.080 acre-ft
3485 cu. ft.
Minimum WQ Volume Elevation - 384.6 feet
WQ Volume Elevation Provided - 386.5 feet
Storage Volurne Provided- 0.388 ?acre-ft
16919 cu. ft.
•1) •na 0617ZZ
1)-aaae:r.,__ 9L5 0 =pap!noad awnloA DSMIS
;aa). 0'Z8£ = pah!Aad uo!jenal3 awnloA OA1
laa) 9'8L£ = uo!lena13 awnloA OM wnw!uiw
. 1) •na ZZ9Z
13-aaJe 190'0 = S
(ewV a3eu!eaa) (A-{) (lle)u!eJ u3!saQ) - S'awnloA))ound
:uo!iej!d!aaad pu!-L woa) awnloA ))ounj lejol
u!/.u! ZE.O = Ail
snowadw! IuaaJad = I
ui/ u! 'Iua!a!))aoa ))oun-d = n-d 'ajayM (1)600'0 + 50'0 = Ail
Q961) jalanyaS Aq paquasap se wpoyaapV oldwiS. aql u? suoijeIna)eo awnloA ))ouni ayl sum
uoi}elnalej awnloA ))ound Maul-L
.4 •bs S9L£
saaae LROT - pap!Aoid eame aaepnS
;aa):.. _. 67"6L£e - _ uo!Jenala lood lewaoN
•I) •bs Z1301
saaae SZO'0 = VS
001/(o!;ea Va/VS * V(I) = (VS) ease aae)ins puod wnw!uivN
1 ' 1 algel woj] % 430' L - o!aea Va/VS
la;)) 17 - 111dop pownssV
:Iood Luauewaad )o eaad aae)anS
% 0'0E = eaad aae)anS snolAAadwl % pajewils3
ae OE'Z = eaad a3eu!eaa le;ol
(06ell!A uo;saad 10 weaalsdn puod Ilews) aNOd JAM - E# aNOd
666L midv'S •Sd 'saagaeJg IuawaSeuLVN )sag JOIumwJOIS bM(IMN34JN :aajnoS
Z9,1 E8' L I L'Z 17E'Z 997 OL'£ 17L'£ 06
Z17' L 09' L 99' L O L'Z 43£7 9L'Z WE 08
9Z' l S£' l 175' l 6Z' L LO'Z 017'Z 997 OL
OL'L 9L'L 6Z'L LS'L LL'L EO'Z OV 09
Z6'O 00' l 60' l 0£' l 05' L £L' l 907 OS
LL'0 Z8'O 06'0 SO' L SZ' L E17' L £L' l 017
Z9'0 179'0 OL'O £43'0 L6'O 90' L 17£' l OE
1717'0 917'0 LS'O 6S'O OL'O 6L'O L6'0 OZ
9Z'O 6Z'0 LE'0 SE-0 £17'0 617'0 65'0 0L
0'6 0'8 0'L 0'9 0'5 0'17 0'E
pap gjdaa Iood luauewaad A)
snoiAaadwl
JUVL"Pv.ld "if '.' 1"u-if
juejn11od %S8 JOJ Ouiz!S 100d;uauewaad lo} of; rd eaad aSrure.r(7 01 eaad aae}anS l'L a19e1
170-U(-6Z :oJea DN 'tieJ =i)-W4-ST 4-!D
OOEEOZ :# Pa Pd I asugd and a.aoweaae, :aweN laaToad
Carramore PUD - Phase I W&R Project 203300
Stormwater Management Plan February 2004

M
M
M

D_

T
m u

c
ro .a
N

? ° Y to
< V1 N =

a) 6
C >
C ro Q = Q
cu
E > f
C W N N J

E M
k
?.
D O -O "O D_ 0_ 4_ -0 C c

0 ro ro a
CL CL CL m m m 0
.. Q
W CD
to cu
w
>
O a -73 -a -a -o -a v

Ld.n 4/ N ? ? Y
Q Y ? Y +?• Y Y Qf
V v v N A N N E n

o
0
0
0
0
0 7
W
W
J 0
0
m
O
O
m
Q t
Q
r, C4 o LO Ln
v v p

V
ro
p
O
?D
?D N
M
x a) a) 6 ,I: C71
VI au w Ql M c0 ? L
V cu M
Z W
D 'fl C
Q ar a o o o o a
C) C) 0 0
m 'D n
N C-4 N O 0 0
Z
U
v

Z
W L
O
L
1-0
"R
iD
O
O?
?D
O
O
Ln
O ` W N ? N W M %-0 IT
M
-0 M M I,
. LA M u
' Qi
D. Z Ul I Ln V IT O
~
Z
J t i
Q O
CL LJ C) CN
O M M ?t O O
0 z u

W
+' U

C N N M C C C C
N Q ?
W
d
'° ? v rn o v ro ro ro ro
E z) w N M d' C C C C

Z Q
w
.N
f/7
v
O v, co IN
V
^ Ln
?+"? N
N Ln
M
rJ a
.
V Lr; N N M O
C M

d N U O
?
cn
_
u
N
M
V'
U C
O ro C
CE J
Q
i LlL
V) LL
in a
V) d.
V) N
E
O
CL. ro
p ` a a) ?-
v N

U o
QU
ro Q
c ro
? C
v N

ro U
E
V7
U_ ro O
O U_ O
v O
O

-O U-

to
C:
o
?
O ro o
M
C
ro C

? rp U..
In c
C
_ O 0
N

d N ?

LL s
C U
N
C 2

cu O
U- LL r1]v7
C a cn V)
d C c c
O Y
D_ "S7 "D CL C
O O
p 0_ D_
to c
3
O 41 J D_
Z Z bo bA
C C

}. q N v
Z Z
O v x x
W W
w p p p fl
O O O O
Q- D_ Cl- IL m co
K
0
0
N
<r
O
C
^I
u
V
c
v
O
Z
0
Nitrogen Control Plan
Residential Subdivision with no known building footprints
Project Title: Carramore PUD Phase I (Part of both SF-1 & SF-2)
Part I. Riparian Buffers
Area includes riparian buffers? [ ] No [ X ] Yes [ ] Exempt
If yes, [ ] 50 foot [ X ] 100 foot
River Basin? [ X ] Neuse [ ] Cape Fear
Basis for Exemption
Show buffers on site plan.
Part II. Nitrogen Calculations (Method 1, Appendix C):
a. Subdivision Information
Number of lots 40 Average house size
Number of lots / acre 2.02 Amount of Right-of-Way
Total area of lots (excluding Percent of Right-of-Way
R/W and open space) 12.23 ac that is impervious area
Average lot size 14520 sf Total estimated impervious area
b. Pre-development loading:
W Type of Land Cover
Permanently protected undisturbed open
space (forest, unmown meadow)
Permanently protected managed open space
(grass, landscaping, etc.)
1 Impervious Area
TOTAL
Nitrogen Loading Rate (Ibs/ac/yr) = 0.60
c. Post-development loading:
Type of Land Cover
Permanently protected undisturbed open
space (forest, unmown meadow)
Permanently protected managed open space
(grass, landscaping, etc.)
Right-of-Way (read TN export from Graph 1)
Lots (read TN export from Graph 2)
TOTAL
r
3125 sf
3.95 ac
65 %
2.57 ac
TN Export
Area TN export coeff from use
(ar_resl (Ibs/ac/vr) (Ibs/vr)
19.81 0.6 11.89
0 1.2 0
0 21.2 0
19.81 11.89
TN Export
Area TN export coeff from use
(arrrsl (Ihs1ac/vr1 (Ibs/vr)
0.84 0.6 0.50
2.79 1.2 3.35
3.95 12.0 47.40
12.23 3.5 42.81
19.81 E, f - ? r: 94.06
Nitrogen Loading Rate (Ibs/ac/yr) = 4.75
Proposed BMP(s) One wet pond and one dry pond
Nitrogen Load after BMPs = 4.14 Ibs/ac/yr
Nitrogen Load offset by Payments = 0.54 Ibs/ac/yr Estimated Buy Down = $3,499 (NOT REQUIRED
Net change in on-site N Load = 1.15 . Ibs/ac/yr SINCE PUD OVERALL = 3.33 Ibs/ac/yr - See Attached)
1 Part III. Control of Peak Stormwater Flow (for 1 year, design storm)' 'See Stormwater Management Plan Report
Calculated Pre-development Peak Flow 29.6 cfs (For Drainage Area #1 in Report)
Flow Control Method One wet pond and one dry pond
Calculated Post-development Peak Flow 12.2 cfs (For Drainage Area #1 in Report)
I, the undersigned, certify to the best of my knowledge that the above information is correct (affix
Supply notes & details showing control of Nitrogen and peak stormwater runoff.
I
??9
% L6'ZL :uoilanpab alpH 3uipeol ua3oallN apsodwo' laafoad palew11s3
.ih/ae/sql ,L', :sdW9 a31JV ale, Pu0I Nl laafoad palewils3
jA/sql ,L'ZL :lenowab Nl dW8 laafoad palew11s3
jA/sql 903,6 :laodx3 NI dWfl-aad laafoad palewils3
.jA/sql 00'0 :umpnpall 3uipeol u020JJ!N 0 eaay a3euiea0 paleul11s3
% 0 :uoilanpaN ?iWA palewilsI
OS'Stb 97701 s elol
t7Z't7Z 07 l easy M/2)
01'9l S'£ Z I'S eajy lol
997 Z* L ea'y pa9euelN palaalad Alluauewiad
05'0 9'0 HY0 eajy pagvnlslpun palaaloM Alluouewiad
(e/sq
(jA/sgl) IN0dX3 NI
aoJ?odx3 N
);
l sway JanoJ puel )o adAl
eaad I asegd and aaowumojo aapulewas :9 eaay alfeulujo
jA/sql ,L'ZL :uoilanpab lWipeol ua3oa)!N d eaad aSuuleaa palewils3
G7 :pU0A laM aol uoilonpa?l rIWA palewilsa
SS'9t7 9S'6 slelol
9l'£Z 07 1 l'6* 1 eaay M/21
JZ't7Z S•£ 90':.' easy lol
99.0 Z* 1 L' t) eajy pa3euelN palaalo,id AlluauewJad
00'0 9'0 00`0 easy pagjnlslpun PalaaloM AIluauewaad
(jApL,/sql)
(aA/sgl) JAOdX3 Nl sway aano' puel )o adA
L
•))aoD podx3 Nl _
(Puod lam) ISOM L# Puod :y easy alieuleaa
3uipe01 Nl )uawdolanad-)sod palew11s3
69'L l 9'0 19'61 slelol
00'0 Z' LZ 00 aae)anS snoln.iadwl
00'0 Z* L Ott tl ," L'a'y Pa9euelN Palaaload AIluaueWJad
69' 1 l 9'0 t 1t t, I ' eaay paganlslpun palaaloJd Alluouewiad
('A/sgl) 12J(DdX3 Nl (e/sq sway JanoJ puel )o adAl
ajjodx3 NI
3uIpeol Nl luawdolanad-aad palewi)s3
ae/np ZO'Z
slol Ob 'ae £Z'Z L - 'ljbs' 6 + < :eaay lot
ae 6L7 = •ljbs ; -I :eaay aaedS uadp pageueW
'ae ,9.0 = -ljbs :eaay aaedS uadp leinleN
ae LS'Z = 'labs f ()t,)t' i. I I snolnaadwl AeM jo-lgS!d
snowadwl % S9 ae 56'£ _ '1}bsI f+?)'E :' l :eaay?(eN?-?o-ly?i?l
'ae l8'6l = 'ljbs =. t E,`<: 3t3 :eaay lelol
JLD"-L I VIOL
WWII :Aq palndwoD 00££OZ :# laafoad
b0006Z/l :alea I asegd afld 0-10111eaJUD :aweN laafoad
suoijel lei 2uipeol uD2OJl!N asegd (Ind a.loweJJlVD 1
UHL & LNVIHUNI.ILNIAL GUNSULTANTS, PA
NC Division of Water Quality
Tran # Invoice Type Date Reference
3089 052004 Invoice 05/20/04 Permit App.
WEJ?wgS 1401 GROUP
.? aY `? 1 200 t
016710
Check Number: 16710
Date: 05/20/04 Check Amt: $200.00
Balance Discount Pay Amount
$200.00 $0.00 $200.00
?A.?ERQUAI-11Y SECTION

© Complete items 1, 2, and 3. Also complete
item 4 if Restricted Delivery is desired.
© Print your name and address on the reverse
so that wo can return the card to you.
13 Attach this card to the back of the mailpiece,
or on the front if space permits.
1. Article Addressed to: Wold rnorc f n-ro rtc-
MDC Homes
2501 Blue Ridge Road, Suite 150
Raleigh, NC 27607
DWQ# 04-0826 - Wake
A. Sign re
fi
D. Roceiv' by (Printed/
D. Is dclive a0dress Qiffcrent fi
r
Agent
ti ? Addresse
C. Date of Deliver
7-Z0 -611
'td If YES,,nter,dcl'i\ ry addre,'
item 1? ? E3 NYes
low: o
3. Service Typo
Certified Mail ? Express Mail
? egistered Return Receipt for Merchandis,
? Insured Mail C.O.D.
4. Restricted Delivery? (Extra Fee) ? Yes
2. Article Number
(Transfer from service label) ?004 0 7 5 0 0003 3326 ?203
PS,Form 3811, August 2001 Domestic Return Receipt to sss-ez-rt is
UNITED STATES POSTAL SERVICE
LISPS
• 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

Complete items 1, 2, and 3. Also complete
item 4 if Restricted Delivery is desired.
Print your name and address on the reverse
so that we can return the card to you.
0 Attach this card to the back of the mailpiece,
or on the front if space permits.
Article Addressed to:
MDC Homes
2501 Blue Ridge Road, Suite 150
Raleigh, NC 27607
DWQ# 04-0826 - Wake
A. ign ure
Agent
? Addresse
B. Recei b (Printed Nam C. Date of Deliver
D. Is delivery addresediffernnt from Rem 1? ? Yes
If YES, enter delivey address below: ? No
N =r-,
v--
3. Service Type _
C& Certified Mail ? Express Mail
? Registered PQ Return Receipt for Merchandis
? Insured Mail ? C.O.D.
4. Restricted Delivery? (Extra Fee) ? Yes
?. Article Number 7004 1160 0002 2706 6035
(transfer from service /abeq
?c r..- Zit11 r-k-- onne r%'-?;_ 0e'... Qe a a AMCCC_ f_\A_1G
NC DENR Division of Water Quality
Wetlands/401 Certification Unit
2321 Crabtree Boulevard, Suite 250
Raleigh, NC 27604
. I4f???iiliii{1!!{{!!i'.{i!{ii{!t??{ilt{?.'i??{i???!{i{#Eii??{??i
-4544
,u POSSIBLE
SPOIL AR�
_ --
' 'TO BE \PRC)' �UED
�� 4545 --
�',D I VER >I qN� ;
RtD
-MP
-----------_�--J---
i --
' - - - - - - - �1 ` �i _� /' / / _390-
IF
----
- ,
x4' '-ate iT--71---- -1
--------
I ,
I ,
I ,
I ,
=10
DRIES - I
C f- M E TSI
I I
I I
I I
I 1
I I
I I
I I
I I
I I
I /
I I
I r
I 1
1
iNATER LEVEL DURING STORM
I IG 1�Ir f�/-y1- vlJJir r � vr�
PAD TO Ei ISTNG
DRAINAG�WAY IN THIS
AREA.
CiQ9 108
/
/
GODFREY NORMAN
/
/
/
/
/
''A R
BMP #2 -WET POND
SCALE: 1 40'
RCI' RISER
TRASH H00
r
_L -- -- - ---
PEAK FLOW ATTENUATION POOL
PERMNNENT
-
I-III-III=1 - POOL
ANTI -FLOATATION DEVICE
ANTI -SEEP COLLAR
145 LF 18"
RCF OUTLET PIPE
@ 1 38%
i
CROSS SECTION
No., Revision Date B
12 5 03 GAS
I _ C PF ✓iEVV COMMEtyTS 3 22 04 GAS
F :V W _ COMMENTS 4/30/04 GAS
'S - 5 27 04 GAS
. VL !PIIS 10/5/04 GAS
TOP OF DAM EL. 388.0
100 YR. EL= 386.63
MINIMUM SLOPE 3
:ARTH DAM
6'x4.5'x9" CLASS A
RIP RAP DISSIPATOR PAD
W/FABRIC LINER
V2,=5.2 ft/sec \
NOTE: RISER BARREL, SKIMMER AND OUTLET PIPE SHALL
BE INSTALLED PRIOR TO THE BEGINNING
OF OVERALL SITE GRADING AND SHALL BE
UTILIZED AS A SEDIMENT CONTROL DEVICE
DURING ROADWAY AND UTILITY CONSTRUCTION.
ONCE SITE HAS BEEN STABILIZED AND GRADING
IS COMPLETED THE BASIN SHALL BE CLEANED
OUT AND STABILIZED. THE SKIMMER DEVICE
SHALL BE CLEANED AND ATTACHED TO THE
RISER BARREL AT THE NORMAL POOL ELEVATION.
Designer
DIMENSIONS
ELEV.
NORMAL POOL
TOP OF DAM WIDTH
4,700 SF
384.0
10 FT
388.0
j ANTI -SEEP COLLAR
60" x 60"
N/A
1- YE_ AR_ STORM ORIFICE
2" SKIMMER
384.0
TOP OF ANTI -FLOATATION
TOP OF RISER
6.5x6.5'x2'
380.0
4x4 BOX
386.5
OUTLET PIPE INVERT IN
OUTLET PIPE INVERT OUT
18" RCP
380.0
18" RCP
378.0
OUTLET PIPE INVERT OUT
24" RCP
No., Revision Date B
12 5 03 GAS
I _ C PF ✓iEVV COMMEtyTS 3 22 04 GAS
F :V W _ COMMENTS 4/30/04 GAS
'S - 5 27 04 GAS
. VL !PIIS 10/5/04 GAS
TOP OF DAM EL. 388.0
100 YR. EL= 386.63
MINIMUM SLOPE 3
:ARTH DAM
6'x4.5'x9" CLASS A
RIP RAP DISSIPATOR PAD
W/FABRIC LINER
V2,=5.2 ft/sec \
NOTE: RISER BARREL, SKIMMER AND OUTLET PIPE SHALL
BE INSTALLED PRIOR TO THE BEGINNING
OF OVERALL SITE GRADING AND SHALL BE
UTILIZED AS A SEDIMENT CONTROL DEVICE
DURING ROADWAY AND UTILITY CONSTRUCTION.
ONCE SITE HAS BEEN STABILIZED AND GRADING
IS COMPLETED THE BASIN SHALL BE CLEANED
OUT AND STABILIZED. THE SKIMMER DEVICE
SHALL BE CLEANED AND ATTACHED TO THE
RISER BARREL AT THE NORMAL POOL ELEVATION.
Designer
Scale
W&R
1 "=40'
Drawn By
Date
GAS
10 FT
__12/1/03
Checked By
lob No.
72" x 72"
203116.1
\ I I X I I • I 1 i 1 �I 1
8 I I It
� V J1-
bx q�� / I 1 M Y L,TA I VI D
I I \\ 1 1
I1
COMBII�AI���JN�IL11L
11
�\ \, � 1' \
I ! ► i I ; %
_FE
1�1'f E \ �c ;R E \1
I + I I I I 1! ! i + r 1\ ,R 0 E TIONI= E N �I NIS
t 1 +I I L I I I I I+ I , r: 1 1
t�1\,
�' � 11' '-' III ,, 1 t I► I \
++
' /,, \ / .' I I I I ! � ,I / 1 I
2 H ' \� 12 1 �7$F//I
I I I I I I ,; 1 ,11 ►; 2�, p \
! ! III / / 1 + \
13 \ // I r+ , I I I II I I / I I\111 I \�
0 STORM1 �� \
ASEMENTr, , i I -7n' II \\tQNE �iONE\ \ \\
Q ; I QNF- / ; t 11 \ \ I \
DAYLI LINE' I I . \
12
'YPPte\ \ - -
,�TICA�� 3\11
\\ �� \\\ --\
11 9'4 It
SF�' \\\ '
If
If It
12 ,109' SF
/ \\\ \ \ \ \
4/%� 0 \ \ INV.=34,5\ \\ X \'\TING\
TOP e(9t = 81 \\ ' I ` � \,/ Q \'\\ PLt
i -A a , I d \ ` \ TOA PIF a' 350, \ \ \
GVT ND-
/ I 1 I I 3 ! L \ I tll 1
1 I I I + 1 S RED R
', IREVE TATE Zq 6 '
IF
ii 6EI T++ -Ir �4=VE
I
p, \ _ i ' 1 + -:` II 11 1 , i I t ND 1 TUILIP
tiff
9 s I +
6" DIP \CTS AS DRAWDOWIFO_,���-
TR E E PROTECTION, 1,STOR AND BOTTOM DRAIN
/ OR PON
FENCING FIGURE 3
9
U
'
P's HALL Irl E �'JSED
M OYER
C U R TI S 0 RL E M A SKI /' FOR ER SION CONTRA -L- -`
DURING �ROJECT.
\A/I r T�
BMP #1 WEST - WET POND
SCALE: 1 " = 40'
RCP RISER -
1' MIN. FREEBOARD
WATER LEVEL DURING STORM
TRASH H00
I I_I I -III=► I I; I
-I I ---- PEAK FLOW ATTENUATION POOL
PERMANENT _-'
' I -III POOL -_'
iTL ;,TI T
QE ANTI -FLOATATION
ADD 4" GATE VALVE
AND BOTTOM DRAIN
TO EXISTING RISER
PERMANENT P OL = 350.0
348.0 -
2-45' 6" BENDS
345.0
CONCRETE
BLOCKING
TOP OF, DAM EL. 356.0
100 YR. EL= 355..2
ANTI -SEEP COLLAR--
120 LF 24" "0 -RING GASKET-"-----"/
RCP OUTLET PPE
0.83-3%
CROSS SECTION @ RISER
LEVEL SPREADER
MINIMUM SLOPE 3 1
:ARTH DAM
8'x6'x9" CLASS A
RIP RAP DISSIPATOR PAD
W/FABRIC LINER
_\6„=4.8 ft/sec
AE
RELOCATE GATE VALVE
TO UPSTREAM SIDE
OF TEE.
6" MJ PLUG
344.0
CONCRETE 6"x6" TEE \6" GV Q
BLOCKING E
CROSS SECTION CQ? DRAWDOWN BLOCKING NCRETE REMOVE TO
PROPOSED PLUG
CARRAMORE SUBDIVISION
PHASE
NOTE: RISER BARREL, SKIMMER AND OUTLET PIPE SHALL
BE INSTALLED PRIOR TO THE BEGINNING
OF OVERALL SITE GRADING AND SHALL BE
UTILIZED AS A SEDIMENT CONTROL DEVICE
DURING ROADWAY AND UTILITY CONSTRUCTION.
ONCE SITE HAS BEEN STABILIZED AND GRADING
IS COMPLETED THE BASIN SHALL BE CLEANED
OUT AND STABILIZED, THE SKIMMER DEVICE
SHALL BE REMOVED.
S
#4 REBAR 12"
1/2" PREFORMED JOINT
FILLER, 12" WIDE
8"
ELEVATION SECTION
2000 PSF MIN.
BEARING CAPACITY SEE BMP SECTION FOR SIZING DATA
BENEATH COLLAR
TYPICAL ANTI -SEEP COLLAR
NTS
NOTE:
SKIMMER MAY VARY
SLIGHTLY FROM
ILLUSTRATION
OUTLET END; CONNECTION
TO OUTLET PIPE OR RISER
BMP 12 - WET POND
Skimmer to Use: 2" Skimmer w/ 2" heod
Volume to be Oroined = 3,485 cu. ft.
Draw Down Time = 2 days
Orifice Area = 1.55 sq. in.
Orifice Diometer = 1.4 inches
Qout = 0.02 cfs
CONSERVATION POOL
NORMAL POOL
'O-RING' JOINT
�.......,-„ . rr..,.. �..... 4..x4" TEE
4" DIP
4" NRS GATE VALVE -�
SKIMMER ATTACH TEMPORARY 4"x4" TEE
FOR EROSION CONTROL
PHASE OF PROJECT FOR
BMP #1 WEST AND BMP 1812
NOTE:
4" BOTTOM DRAIN WITH
GATE VALVE REQUIRED FOR
BMP #1 WEST RISER.
DRAW DOWN ASSEMBLY NOT REQUIRED.
TORMWATER MANAGEMENT PLAN
VENT
SCREEN ACCESSIBLE THROUGH
DOOR
FLOAT
BARREL PIPE LONGER THAN
SHOWN
NOT INCLUDED WITH SKIMMER
SUPPLIED BY USER
-FLEXIBLE JOINT
BMP SKIMMER DETAIL
NTS
BMP /I WEST - WET POND (FOR EROSION CONTROL ONLY)
Skimmer to Use: 4" Skimmer w/ 3.3" head
Volume to be Droined = 73,920 cu. ft.
Draw Down Time = 7 days
Orifice Areo = 7.26 sq. in.
Orifice Diameter = 3.0 inches
QOut = 0.13 cfs
RISER & DRAWDOWN DEVICE DETAIL
NTS
4'x4' PRECAST
RCP BOX
1/4'x 2' STEEL STRAP w/
2 - 3/4" ANCHOR BOLTS
2 STRAPS REWD
NOTE:
-PLACE STEM SUPPORTS
AT 3' FROM BASE
GROUT EACH SIDE
TOTE: FULLY COATED CMP MAY BE USE
AS AN ALTERNATE TO THE RCP
RISER/BARREL STRUCTURE
APPROVED
TOWN OF CARY
Approved by Date
Planning Date
Engineering Date
WITHERS RAVEN EL
ENGINEERS 1 PLANNERS I SURVEYORS
111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
E.
yq
Sheet No.
S2
DIMENSIONS
ELEV.
NORMAL POOL
8,830 SF
350.0
TOP OF DAM WIDTH
10 FT
356.0
ANTI -SEEP COLLAR
72" x 72"
N A
PEAK ATTENUATION ORIFICE
(2)-24"x6" RECTANGLE
354.0
TOP OF ANTI -FLOATATION
7.5'x7.5x2'
353.0
TOP OF RISER
4'x4' BOX
355.1
OUTLET PIPE INVERT IN
24" RCP
346.0
OUTLET PIPE INVERT OUT
24" RCP
345.0
CARRAMORE SUBDIVISION
PHASE
NOTE: RISER BARREL, SKIMMER AND OUTLET PIPE SHALL
BE INSTALLED PRIOR TO THE BEGINNING
OF OVERALL SITE GRADING AND SHALL BE
UTILIZED AS A SEDIMENT CONTROL DEVICE
DURING ROADWAY AND UTILITY CONSTRUCTION.
ONCE SITE HAS BEEN STABILIZED AND GRADING
IS COMPLETED THE BASIN SHALL BE CLEANED
OUT AND STABILIZED, THE SKIMMER DEVICE
SHALL BE REMOVED.
S
#4 REBAR 12"
1/2" PREFORMED JOINT
FILLER, 12" WIDE
8"
ELEVATION SECTION
2000 PSF MIN.
BEARING CAPACITY SEE BMP SECTION FOR SIZING DATA
BENEATH COLLAR
TYPICAL ANTI -SEEP COLLAR
NTS
NOTE:
SKIMMER MAY VARY
SLIGHTLY FROM
ILLUSTRATION
OUTLET END; CONNECTION
TO OUTLET PIPE OR RISER
BMP 12 - WET POND
Skimmer to Use: 2" Skimmer w/ 2" heod
Volume to be Oroined = 3,485 cu. ft.
Draw Down Time = 2 days
Orifice Area = 1.55 sq. in.
Orifice Diometer = 1.4 inches
Qout = 0.02 cfs
CONSERVATION POOL
NORMAL POOL
'O-RING' JOINT
�.......,-„ . rr..,.. �..... 4..x4" TEE
4" DIP
4" NRS GATE VALVE -�
SKIMMER ATTACH TEMPORARY 4"x4" TEE
FOR EROSION CONTROL
PHASE OF PROJECT FOR
BMP #1 WEST AND BMP 1812
NOTE:
4" BOTTOM DRAIN WITH
GATE VALVE REQUIRED FOR
BMP #1 WEST RISER.
DRAW DOWN ASSEMBLY NOT REQUIRED.
TORMWATER MANAGEMENT PLAN
VENT
SCREEN ACCESSIBLE THROUGH
DOOR
FLOAT
BARREL PIPE LONGER THAN
SHOWN
NOT INCLUDED WITH SKIMMER
SUPPLIED BY USER
-FLEXIBLE JOINT
BMP SKIMMER DETAIL
NTS
BMP /I WEST - WET POND (FOR EROSION CONTROL ONLY)
Skimmer to Use: 4" Skimmer w/ 3.3" head
Volume to be Droined = 73,920 cu. ft.
Draw Down Time = 7 days
Orifice Areo = 7.26 sq. in.
Orifice Diameter = 3.0 inches
QOut = 0.13 cfs
RISER & DRAWDOWN DEVICE DETAIL
NTS
4'x4' PRECAST
RCP BOX
1/4'x 2' STEEL STRAP w/
2 - 3/4" ANCHOR BOLTS
2 STRAPS REWD
NOTE:
-PLACE STEM SUPPORTS
AT 3' FROM BASE
GROUT EACH SIDE
TOTE: FULLY COATED CMP MAY BE USE
AS AN ALTERNATE TO THE RCP
RISER/BARREL STRUCTURE
APPROVED
TOWN OF CARY
Approved by Date
Planning Date
Engineering Date
WITHERS RAVEN EL
ENGINEERS 1 PLANNERS I SURVEYORS
111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
E.
yq
Sheet No.
S2

_ _ _ _ 1
NOTES: MENT WI H P ESTON VILLAGE &
J,\ i ~ 1. PER PDD APPROVAL AND AGREE
t'/ II , .FARM HOMEOWNERS, ALL FOUR PON RIGSBEE PLAN BY HE ASSOCIATED
f' O~ \ CONSTRUCTED AS SHOWN ON THIS
~..a. I / I ~ = w T I. 1 AND S2. DETAILS ON SHEETS S
- ~ ` I' it r _L ~~~r PORTION
I BE USED FOR EROS ON C NTROL 2. ALL PONDS SHALL
HEN BE CO VERT D TO FINAL USE ' OF PROJECT AND SHALL T
r ~r _ . ' TOWN OF CARY ALLO S FOR REMOVAL AS BMP S ONCE THE
'~I ~ , A INS OF THE EROSION CONTROL B S
I ~I;/, ~ ''I ;5~~ ill r~~ Jf ,,Hf.,~~N _ l ~ , , " , ,.I l ~ LOTS 61 69 ~ ' LOTS 3 - 1,3
DEti~> EiliD ROAD ~,,+~'„'r~;, ~ i RECORDED IN _ ~ ~ - r~! ~ LOTS 59 60 ~-.'~~.;,'_"~',;r~:~' RECORDED IN
X60 FU~,._iC f'~W) ~ BM 1994 RECORDED IN <~~_~a~r% ,la(, I BM 1994 ~ I 4 1 PAGE 125
PAGE 707 I I't~~!ir', I ~ ~ BM 1994 ',~_I ~'If~~ I ~I ~ I,
i I vI I I ~ I ; y~y! ,I I t PAGE 837 1 ~~9 ~ 1 ~I I. , r1r , OVERSIZEDI 1' I
I I I I I 1 1 / I li''Y l r I 13 I I I , I I i I I \1 j ~ _ 1 ~ /,v, 1 , ' \ \'I I""' JUNCTION OX I ' ' - ~ I 1 1 I ii
I I I I I , I I I I , \ / fl] S~J II Jc~ r I I I I I 4iJ r~ BLUM I I I I I I ~ r ,r I _ / GRATEQ I I 1 1 I ~ 1 I I j NLET ~ ~ II 11 f` vv i
I I I I I I I I I I ~ 1 , .,"J'_y., ~ fir I I I I II I ~ I I I 11 ; „ _ ~ 0,,, EX~~T YI YI I I 1 1
I I I I ~ I I I I , ; ~ ~ ; , , I I I I I I I I 59 r~-~_., ~ ,,~~IM=365,30 I i I r I I I I I I O ~ AA d r' r ~ 10 I ~ S89'34'45 "E ~ 'I 'I O ~ 1 / 365,30 ~ II ~ I II 1
I I I I I I I I I I I \ ~ ~ V] I~ ~ I~I~. I I ~ ~ - ~ ~ -.I INV. OUT=358.60, i I I 1 I I I I 1 I I I l; I I I OUT=358,60; (24 RCP) ~ r HALE 1 1566.20 11 vv
I i I I I II I ~ ~ j II 1 !II ~ _______r~r ~ I I I I I I I I I I 60 1 ; = , l i I I I I I I I O 1 ~ )r~ 1 I I \1~ \ I ~ i i 11 i +OSI I I I I I I I , t 3 i
I _ 2 I I r I I I I I I I \ ~ ,l' , O I 1 I I I I I I I I I I 1 , ~ ~ 1 I I I 65 I 63 62 I I, ~ - ANICETTI I 12 I 1 I I I 1 1 5 O ~ I I 7 I 4 \ I 11 I 8 6 O O O 9 O O , I 0 I ,,Io. , ~ 1 1 \
64 00 61 , I I 69 I I O I O i~,, , - _ I 66 I O I I I O ~ ~ - I ~ETTI AMBLE \ , ; ;I~~ 1 T,
I I I I 67 I I I I I I r / r, I r 00 I I , I I I I I I I I , I ;REPAIR FENCE - ,1 I I 1 Ir vv , . I I I I I I ~ I I I 1 r v ii
11.2 L 1 ~ I I _ ~S 9' 08_38 "E r I I I ~ ~ / ; I .I. rte/ .l I AND BRICK - ~1 I S89'0~'S4"E I 1 _ _ ~ _ _ '
1233,96' t ,r., i , . - _ / 1 ~ - T - FA~T.~- ~ I `v ' LAROSCAdE E~SEME ? ~ ; ~ i I I 7" _ ,-__--r I .1` j li , v ' ! i ~`v v ~P I Av 1 / I I I I 1 / i v V I
rrr i I r l ~ r ~ "^r'r r~ , ~ ~ I i 'l i __a, r ' ~ - ~ - - / / r r l 'i , 1 v.'' / I , ,'r _ \ r . LV I Y V I i A I` 1 ~ J I I? I ~i I I' ' ~ / i i
r I / i I ~ _ _ _ _ _ - - II 1 `1 \ I I I I \ I I 1. I I I I I rr 'r / ~ I I I
~ I ~~..I ~lr r , l / / I i i ~I. I, ? ~ .I 1 I 1 I I I ~ 1 I I I \ ~ \1 ~ I ~ ~I 1 I I 1' ~ / I ~ .I r. ~VI j ? 1 I 1.1 , ~ I ~ I I i ! 1 A .1 1, 11 1 I / I
J ~c~A, I'' 'i ~I , ~ I r• ~ ~ / / _ ' ~ I r ,.I , I~ 1 ,1 ~ 1 , , I I 1 I I `I \ l VI ~ I , ' li 1 1 '1 1 1 I I l i I 1 V V I '1 A I _ A 1 , I I .i I ~v Jf 'rr " I i 1 I 1 1 ~ . I i- I I I l i r . - i n
4. a~. ~ 5 y. ~ ~ . ~ 4-r A _ CC. ~ / r 1 ~ - - I, I ` ~ it r I / l~ ~J i`, I ; I I v v\ ~ , , , i I ; i ! r / 1 ~ i i 1 1v ~ 'v , i gp PONm 3M. i r i+ v ! I I I ~ i i I r' ~ I } I / 1 r 'I / i \ v v i i vv ifv i 'v v I l i rl ; i t i i t , ~ I i I i , I
~ i-'~ EXISTING ~ v„~,~'' r;~1~ . ~ ~ r .r , , / y ~ y ~ ~II, I~,I r~ I / ~ /i _AKE ~ ~ , 1 ~ _a I r ; I I r I ~ ~L v v v vv RI ~ ~r eN v I i v I I I i 1 i I I, f ~ ~ ~ I ~ i ~ 1 r ii B R~l ~ lF ~x_` v i~ i 1 Iv ~ i ~I i I 1 i r i `1 i f~ ~ ~ ~ I hl v v O~ I v I i i 1 I 11 nl /1 ~ i V~ V A, 1, i I I, I jl I ~ , i l] V i I , f p 1 I , I i I/ I.
4 / ~ r 11 'r'l' - - - -.~IIIr Itil; i ,I 1 4 / 5 ' /.I 1 I -11 1 rl~ i ~ _ I~ I I/ ~ I '_.i L~-._~ 4. y / 4 44. y,y ~ 4'~ I /,1 ~ 1 -I, _ I~ I r. ~ 1 1 I \ ` \ i f ~ I I I I I i 1 1 11 11 \ ~~/(1 1 l , i i I 1 / II j l ' I ' ' I, \ I 1 _,l f LI_._._._._._~_ _._._._,.~.J ~_..LJCa.~~({, 1,r 1 1 1 r 1 I I; ~ f \ ~ _ I I 1 V - - I r I ~ / ~ I 1 III
i pc i, ~r rrr i ; r~~. ~ ~ r~,rt-' / v. 1 ~ 2~SroRr , ,
v Mli ~ v v, I II FRAME ~ I I I ~ I ` ` l v H SE ~ I I I I
lO ( / ~ ~ ~ / - 1 1 A I ' 1 ` I ` f I I ~ I ;
~ ~ ~ ~ ~ d'l ~./.~~r, , ~ A r I -I \ \ \ ~ 1\ I I I I 1 I ~ I I I. / 1 1 I 1 I I i, \ I 11 i
~ i~ ,1 t m 1 r 1 I - , 1 _ 0 \ Ff' I II 1 1 1 I 1 ~ I`~\ I %I II f f ,r / I 1 \ 1 1 it
r I II/ I / I I ~ ~ 1 / A V 1 1 1 1 I r I N I I I t 1 I I ''I I 1 1, / \ I 1 , BARN ; . ; .1i, i 1 v I 1 ,1
~ v t ' ' ~ ' r . ~r r l r r / ' ~ r I ~ , ~ _ t ~ .,,r , / k _ I, I r r'.
r v. `l) j 4, y 4 y y ~ (~l i r rr l i r~ f i ' ~ ~ i,r i/. ~ ~ I 4 /r, ~ i r r r ~ l / ~ ' - r-'- ''i .i i r~l I{ i~ r 'v IA i ' I',~ I ~N i I I i r i 'I , f ~ V v ~ ~ ~ II i,~ I:~ ~ i~ i t i SILOH i i $ I ' 1 1 ~ ` ~ ANN. ~ r '
4' ~ 4 ~ / r r r , i l , / I r ~ ~ r _ i, ' i, ' ~ r / G~/i~' r r l r r , r; a' I r I I r I 'y rr r~ r'I I r r/ .~.rr r ti. r' " i I~ 1 I .sir 1 - _ _ _._,t~_. _._.r _ _ \ - I / I II
r ~ , I I' I I /(,1, 4 / I / rrr /r l r r'/ ' l ! '-r-~----. ~k, 1 ~ y r r/!I/ 'lrr / r~ l' i' r i/ i I i t _ r r r/ r r r r ~ i r % i r i 'r i j 1 Ir j BA it , C._. 21B' \ 1 ~/~fV V. i, l ~ l _ _ _ ._.J. _.L I' i
_ / j II I U 1 I / l IY, I I' II 1 1 I 1 / / ! T. - t 1' i i , _I III I - 1 J^' I * \ I I . I
/ q y G 4 ~y. r{{ ~ , r l r l l ~~-.._.i, , _.~'J i _ J( i AI- I I 4' . ~r I l r r r l/ l r Cr 1._, ~ i i i , , r / ~ h._ _._I_._.1._,_ ~ i SHED / ~ I r l9 r i 1 r I I/ I r r I I I ~ ~ . \ f - a a-------------'" ~ \
r'r 1 1 I I / I I i ~ I I~r r~ / . ~ ~ 1 ~ I I I I i ; ~ V ~ b. - /~I_{I I I I I I I I i I I / I I L, J._.--- r I L, ~ , 'L.L, I r i ~
V`r ~ ~4 $ I~ J t I I , r r rl I /I r I I I I I I, I ~ j / ~ I I r I I r l I I r I _ / 4 r~ l t l l r r I l r i I I I i I I I I ~q~s r ~ HOUSE 4 f III I/ r I i ~ I I ~~~-I r
'VC~ ~ S' r - I I I I I r/ / I i ~ I I I I ~ I I I I ~ ~ 1, I ,?~,,I I I I I I , I ~ 5_<r 'y I ~ u llh t Ir I I ~ I I I I I
~ r c' q/ I~ I u III I I I I L,_~_.l~- I ~ C~ ~ r / ` I~ II t I I I I ~I 11 i ~ I I I I -~'"~~I I ~ r ~ F ~ r \ r n r , - v ~ v ~ ~ / .I
/ 4. 4i ~ 44 III Y r I I/ I ~ j l I II,... ~~~'I , I I
U ~ v r~/i r~ ICI ~ i I I r r l ' l m I` r ! J~
/ ~ I I l i! i r' l rte- r h.J r ~ f _ ,
~ y r t _ ~ l ~ _ , / i / , / r ' I~ f t , ~ ~ i , , I i r' - _ _ I f/ / J/ I 1 I I t___ .~i~ I I r _ I l l J ~ V I I r l'/ I r=' i i / 1 ! I'\ I ~ fir' 1 - y~ r I f r 0~/' I ~I ~ i I r v i r~ 1 I ~ r f ~ ~ r ~ , - 1
~ ~ ~ rrr j~. r r 1/ la-r ~ I r i I i ~r i I ~I i l l r 6 f , I I I r l~ ! ! , I _ ____________A Jam/ I \ I I f , 1 /v , I ; 1 ~ ~J I I , , I ; , I `
~ ~ HOUSE I y~~/ r r~~ l ~L_ ~ ~.r i i t i, II I ~ I i t I I i 1 I , I N 61 / ~ i rr, ~ / ; r r. it I I i ~ 1 ~ r ~ i, I r, r, r I `I r 'i r I 1 , , y - , , I
t- ~CO / i 4 q y/,~.r ~ ~ ~ J I r i'~' I~ I' i i l ' I , / , r NNIS ~ l ~c- , , ~ I \ i ~ , L / ~ ~ 0 ~ 1
(.rl ~ E ~ / / ~ y ~ r ~?'i ,i , I I r. V ~ I ~ I l ~ I r i r I ~ I (71 CGURT ~ r'~ _ r 1. ~ I 1 - I ~ ~ r~
l9 ' 4 ( r ' r, , r ~ / <..,,~r'~, I I A I _.J i I I I I ~ / I / / ~ y~'/ ~ r/ r~r~/ - ~J , r , I l'~r 'W•~I 1. ~ 1~T"' - , K G
\ 1~ 11 T ~ ri \.+~1\T\.~~\ 1 **i r ~ '11 I 1 I 1 y 1 -`i ~ ~ P d ( ~ _ - ' A I -r ~ ? 111 ~ i
, I 1 1 1 f `V~~~~ - - I I I - - it
vl ~ \ 1 1 1 , , 1 I, A 1
I 1 1 5 I 1 _ 1 \ \~V \I \ ~ I •t. i"i~'~ ' ~I ' .f r 1 i ' I
_I II 11 \ 1~ III •_.i._._I_._ Y~ ~ \ 1~. _ "r iy\ -~I ~ ~ 1i I r i I 1 I 1 ~ IV j ~ II \ ' r.l ~ ` AAA , c. 1, ` _ ` ` n - 34 .i r i i A \ , ~ 'p-, -P.,.~l 1 I I 1 , , I ~T 'L.~ . Y+-- \0 __II ' ; ~,2~I ; I , I' I 'li 1 , ~
i i 1. r ~ f 1_ c`.m~r ' I I it 1 I •I~ I 1 I - T'~ i\ 1 1 .I 1 1 i I \ 1 ~ I I I 1 I'~'~~ _ ~,i-----', T'~ 1 n ~ ~I I\ I ' \ 1 1 T'~,~~ I 1 i 1 11 1 1 1 '1 1 1I \1 ` I I IIt'1 ~ I ~JIL ~ _ ~r , "'~~._'~~._._.I ~ I i ~ 11 1 t I I ' I 1 11 1 1 1 t, 1 1 I I I 7-~^. 1 _ r. 1~ 1 I 1 lL._ _.L - \ I
_ /rr T fi'. r _ / 1 el I i'_ I 1 1 I 1 ~ 1 1 1 1 1 1 I I II - ~ it - 1 I -._L. ._.SJ V I I I 1 1 1 1 A t 1 A .mot' I A 1 -._y,_. 1 TM~~.a I V I ` 11 1 I 1 AI , . A r'r 1 I
,r J / ~.~~sr //'~'•~~~~[:'i~ l1' , 1, ~ rre._..l - I,. / \r I 1 1 1 1~ r , ~ ~.~c--'-~'- it ~ r!, i 5 i i I I I I 1 1 1 1 \ ifl 1; 1 1 1 , t I\ j``\ `,\.v~ ~6(i~ W II 1 i , 1 1 1 i I t 1 , \ 1 _ . \
~ i' :kill i,l _ _ ~ _ _ _ ,'fir 'I ---_._I_~_.1._.._._.~J "'-I ~ I v v _ v ~ K v'~~' vw li 1 1 '1 v 2. 11 1 i v~. .v v ~.A /I , , .r ,I ~ d 1.
] N r / I I IoU.JE - _ I I may. 1 1 1 11 v `v vv v t ~ 1 ~ ` `I v v v{ v~ A~,_._~,_ w ai ~ A ~ 1 I ~ v 1 1 ~ II \ \ • 1
1 l / _r - il)>`~ ;'ra \~'Y' .yam r ~ _ y t ~ \ ~i
f~ , \ \ ` \ i \ ~L\ ` \j ( Iflll. \ Il A hl rl \ \_7°1' i ~1 \ \ \ kill / \ 7 '-)'1'_. II I 1? `I \I 1 A ~ ~1 AA\' ~ I I'.,-~ ~ I l 1 l~V 1 1 I '
1 / "T / III' 'C '1 `Z' 1\l1\~ , 4~' '(L ~1' I 1 1 I , \ \ ~ rl ! r A ~ 4 RUr. 1_ _ ~ ~I~II ,j' ~ _1~ I 1 I I 1 ' I 'V 1, 1 1 1 r a r' V v ~ v 1 v I~, v A V ~I 1~ v \ .v ~ I Q I I I \ i ~I I ~l 1 1 A r~V : A'.. 1 L v A -VA . A ~ I AV A A /I A 1 t A 1~ 1 / i 11 I \ 1 1 1 1 1 1 1 \ f i 1 r \ ..~-.-.p l(~ 1 \ V ~ \ ~ I I h \ 1\ 1 1 1 1
I I \ _J / nrl ` 1 ~ ` s' _ 1 i i i 1 I i t I 1 i I ~ ~ .I t'I _-'-./s ~ _ I. ~ ` i .1'' r cY I ~ i 1 -.T. I \ 1 1 I I 1 1 I I 1 1 ~V I A V>~ \ V ~ I~"`I :5,y / V I 1 I 11 r i III L_._I___~_._.,_!~ 1 , ,Yv/1/~ I I V li , ~ ~v _ ~vv v \ 1 I I I r v ~ li T 1 I I I 1 V /I I I II 1 I '1 `I C~.~ ~~'V''wV v v y~~( i~ 1 I I I W ~ II
1 I .r~ I ~ ~t-'~ - r I I r l I r / I I `1 ~ 1 ` I \ 't' r 1~'\II( 1.,' I I~ / / 1 I 1 Ir":_._._/_. _.j._._r"'P . 1 ! I d li I I i 4 Ii, 1 1 1~ v v v v v)-''v ~ _ ~f,~ 1 I FF 11i _r'-'T1 1 1 1 I f I I 1 1 1 1 1 A ''1 \ v 'V A A` . ~ - 1 1 1 1 I 1 / I it I ~ I I. I i 1 t \ r \ i? ~ \ `\l~ r-la I I ' I
' 1 ~ ' ' I ' 1 1.Y' ' ~ / I ! I ! I 1/ 11 1 11 1 I li I I 1 lV \ I I i lip I I I 1 ~I 1 1 Y v?Iv Ai A ~A A I ~ ~ ~'ii' I c._~f._7.7 _L ._y ~ / I I 1 !l { I I I !I i I I I 1 1 ICI 1 1 11 ~ 1 \ 1 1 1 11 ~ ~ j\ / \Y._ A\ \ I 1 I 1 / f r I i ~ it 1 I I ~ I~ I 1 1 lir JJ , Y1 1 1 1 1 Q 1. '/r I.1 I 1 1 ~ '
I r r 1~ \ `a~~ _ ' ~ ~ l l I II 1 I I 1 ' 111 r 1 ~ I' 1 _ ~ ~ I lir' l I l~. I I I it r ~ rl I / I I~ I I 1, 11 1 1 `1\ 1 1 1 \ / / I 1 I I ~''I l ! , I ' •1 ~I ~ f I I 1 I i\ \ \ 1 1 \ 'll I ~1 ~ i ` V I 1 1 \ I' \ 1 I I f 1 1 1 r 1 I ` I I I '1 I I I 1 1 \ 1 1 I , r i f I i t I r , I f it i I v I i' I I I~' ~'0vv v~`1 - v I v 4' v~ I I
1 \ I I ~ 11 i'l ly/r r__ > A 1 , `~Y. I I / I I I V ~ I I ~ p rl it ~ D• , ,Y. ~ Yd I~ ~ N r r II II ' / r~__,a ! r' I r ~ r I I TIE LINE \ I I I ~r fplr e.'%. - /r .yr~ r 'f ~ 1 1 Y ~'R , t LC__ __.__!_.J I l r I ri r I ~J h v v 1 ° ! I I ! , i,_._,L._.1._.-.I-- -.1,_.T __i_._.,~( ,l._.!._.J( I I I Iv AI VA 1! ~~~_-`I I A I 1 A a~'\F` r I I 111111 _.C ~._.J I I 1 / I , I I , r ~ I~ 11 I I ~ '.I I A ~ ~ - I 1 1 ~ I .V 1\ , I~ ~i
, ~ ~ ~ it I ~ r ~ ~ r `\V ~1r ~ l `~i r~i Y 1 1 rrr i' -`.S EI' / N 1°39 39"E II 1 - ; r I 1 ~ I r,' r% 1 i 4 ~ / Y' /r i~/ r ilrl ~l, ~ ,r , I r I r , I I I , I I \\,\I I 2b I h. Iiy• I I \ I\, I \y .1 \ \ \ I ~ _ ~.f.~ 'y ri I r I I , I VI I \ I\ I I !i' / EO'/ / 1 ~ 10~ I I r f~ , I/ I i I I ~'\I ~ 1 1 1 l? \ I 1 1,` ~.i'I ~ _ `\i
, r 1\ If' r r, v :r r r r ~r` i /r I i., , 60.17 ~ 1 ,I I r - r r I y - ' ' I ~ r. ~ ar ~ r I ~ 01/ 1 r~r I~I r , \ I, r l~ , i ~ ~r r i, i i 'I n ' / r y _._.J~ r .t. J. _._y.._ .>•._.I t. /1. / I I I '~1 1 t. I II I ~ i, >r a ~ r IY"7 I ~I rl , Ir 1 ~1~ ('i r l 1 / ''~0~ ``.A 7 I L~ I I 111 ~ 1 1 N'~~ 1 j i
I ~r 1, , , ~ , ~ ~'I~~ r ~ r i, i,~ USE I .I / /i , i 1 Y / , , J I , I 1 , ~ )I I,/ \ Y V..7 .VA , f / ~ , I ~v. ~ , I ' i' i d ~ ~ f I i, r 1 ri ~f v I'` . r 1 I I I I 1 ~ r r .~b1 t,'I \ ~ .n r v i,' ~ /i rl ~ i ' it i ! i ' i , , 1 %1 28 , ~~1 II/ 1 I I I v'~, I `o n ; I ' v ,'1 1 v ~ .v v -
!fi: ~ I v'r .~~^.r' > ~l 1 V~" i l~;i i ,d ,i I ~ ~ I H' I I ~ ~ ; ~ ~ r'~ r ~ l Z? r i . i, i ~ ! r / i / ~?;i rte; I_ .i / I i r v 7 r i t ir' l / { I I I 1) I ~.II I Il 1 b, yt 1 r, ' /I i j/ / { /i Ir / f,~ 1 ~1 I II III iYr \ 1111 I \ 1' 1 f \ ,al. 23 ~ 24 ~ ,i :f `23 ri ((:i; ~6 ,I yyi Z7 "'1 / r' ' ~e I I I p I I , I ~ ~ 1 18 1 v .1~ t
'I I_j i ' I I,I / I A'1/ r I ITi '1 N. 11 i~ I i\± 1 1 1 1 II I ` 4 I I 1 1 \I l 1, \ 1 ~ 7 , , / ~ / l 1 r rr I ! r ' I III I ~ 1~v A ~ I ~ 1 l y '1 1 v: v , 1. A' I I I I,r 1 / I~ 1 I/ /'I 1 1 I I I 1 '
/ I! ~ / r ~ l ~ r ! i ~ ~~~w~ I rl ! i. I i N iDl r r / 'v \ 5 ` ~`O V I i~ r it i r 1 I r r rl X '1 r' I, I II ~ 1 I I I f ~ v T 1 1 1 1 11 I I vi''v ,1 J I/ / ~ ~ 1 ll / I 1 'I~ I I ~1 11 I I I 1 111 1 , \ 1 1 1 I -d d I .i\ 1 Y i n I/ , ,I 'i ~ 'i i i ~ ~i'i~ I I;' I III I 11 i ~I 1 11 it i 1 1 ~1v ~ I 1~ ~ 'v J
o I ~ r I i \ \ i i J'" 'i ,i ~ , i; i, Ai,' ~ y I .I I III, I I I rl 1 1 ~ III I~ I 11 11 II j1 I.;'v ,~;1~" ~ - i I' y I%I I~ J I ~ v I --:--i, L--~-- ~ 1 ~.:~.,~r~-,r ~l !1 L, --'f~' ~ i I I L@ I I ~ I I ~ I I 11 IA 1 I 11 1 a' I ~ _ _f._..._.~:_, / , llr I I' 41 1 1~ , 111 II III I 1 v ~V' ~ v ~ !1
_ r ~ ~ ~ ~ i ~ tCA ~ f / I ~ I I i i i III I ~ 1 v vI `fit . ,:1 ~ 'vv ) , 1_ - - r - -A ~ 1 / , II ~ 1 I \ ~ v~ v v
10+•00 ~ r ~ ~ I ~1r t I I l i / l - - \ ' ~ - - ~ ~ ' I , I r / r ) G'r I 'i~r Ilii i~l~I i .ill v 5 v (1 v ` /vv~ i _ ~ I
_ rl a 1 i CB/82 r r , r, r i ~ ' } r ~ ~ ~ ,i ~ P ~ ~ ~ ~ ) I r ~ ' ~ , r , - 2e. ' \ i / I I I I III ~ql~-r I VIII v~ I v I~ v a~ v v A ~ ,;1 I I I 11 I I I Itl \ \1 \1 1 \ M1\ `-1 I i' r 1 ~ 1 III I In ~ 1. `_~~v 1 G v nf, J. ~ i r I
~ I - - - ~ r _ _ - A r. , - I l I I 11 1 l 1 1 'Y. i I r j~ f(pp ~ f ( III ~,1 v~ `~.A _ v v v ~ A v~ ~ ~ r l l 1 ~ i 'IL A/ l I 11 ll 11~ ~ ~ I V A V A ~ ~ ~ 1 r "i / I~ 4 ~I Al 11 V `I 1 1 V 1 A\~ ~ I N-.~ W.~~ WG 11 fl IC I If H ~ -1~~1 1\ \ ~ 1 `I I _ _ ~l
1 11W 111 r t I I 11 11 / r I 1, i t / I I ' I ~ , i I~ ~ ~ I r ~ ~ ~ IV~FVJy_r _ i , . r \ I f ~ '1 ~ "T' i / .I"_. / 1 J'~"L~ `I, /r 1 1 I \ I I \ ~ ~ I \ 1 1 ? 7r~ ' r f• ~ 1 I \I 1 1 \ 1 L~ ~I I , rl 'I , A' i,~ ~ 1 , I _ ~1 , I 1 , 1 1 \ ~RA1 . E~~AR
N F ~v' ~ , ,I v a ,~I - - ; 'i i; Ir y r it Ir 'i ,~i ~ it ~ / _ _ , I 1 I - I \ 1 11 f r~ A 1 1 ~ 11\_1\~ \ ,1 \ IV. "'I I. i I I ' Y r~ ~ ~ T' i ~ i,'~ / IA~ - f. I I 1 I 1 v l~' ~ ' i,~' , , I ,1 I - 11~, v , ,11 1 ~bRY`~ ~ ENTI~
i , , 1-~- r ) WILLIAM B. UPCHURCH ° ~ ~ ~ - - r ` ' r i 1 I / / I/ I r ~ _ I - r --r -a--------~" t , I r i , i 1 I' 's' _r- r~ -r / , I , /I r I , ' 1 , I , I, Y „ , , rr. 11 ~ V1 I I , , ~ ! 1 ~ I, ' ~ ! 'I ~ _ I 111 AI , , `V'11 , ~ - i• 1 Ir J~`~~,',i 1 BvA / , I I Y v$o ~v~V`A~1 v ._.I 'ol ~I y~ ~i, i r i'i ~ ~ , / , ~ K v ,1vv~ f
DEED BOOK 1035, PAGE 1 3 ' _ I I I I r 1 ~ t __h t 1 BM 1942, PAGE 1 ~i/` / r' ~ , , , _ " .'10 1 ~ ' ' ,r 16 'r ~ ' / '~i. , • - _ ' w , ~ f ~ ~ v v ` 1 v 1 ~ I ' i ¢ 1 I bir ' i bl ~i/ I ,'I :1 / ~ , Mr-0Ara \C~, 1 1 'Ir.J
1 1 I I I I l it I I 1 7\ I I ` ~T` i~1 I ~"I ,f ~ I PINS 0744.03-14-8765 r r' „ ; i ; ' ~ ; r _ - _;_r I - - - ' , r ' , i, ,r °D'!~ i,=,i:' '~~i jr' i i f" 14" 1 f r , ,a rv:~v vv v i f ~ ~.n_- I I ,aril r~ 1, v 1 1 I r I .r' ~,4 ' i' I, i r I I, ¢P, _ '1 ~ 1 ~I v v~,.-, pl II i_ it r~, .'i 1 r +I~~ 'I - i ~ I ~ v _ ~ - _ ~f
J r r / I , I r ,I ~ I r `d l ----r" ~ .i- i ~ ,i I, ZONED: R-30 l r . ; ~ i I I i.~ r ~ r ~ ~ - _ - - - ___,-f;--~ ; ~ ~ ~ I I yl 11 r r. I i I ~ - _ r ~rrrfiio i.J-Y'-- / I,i~'- ;'i,~,j /J r "I ~ ,i , 6 I, i i~ ~rl rill ~ '~1 1 A 11 ~I --111 I 1 - I 'v -'i ~ 'I .Y i ri it Iv ~'1 1 IA I 1 I v`v~- I 1 I C i.a' 'i ~i__a',` , }-I ,i , = I 1 v , 1 I'I I,v1 11 vI
I _ ~ ~ r I I _ i' ~ I r r / a-~ 1~ -7 ~~T- i ~ ,f i' 1- C ~i I r r 1 lI III~1 _ v ~v ~ ' G, ~ K 1 I 1 1,,11 -
'r I ~ ~ N 88'49 4 t~ I ' - _ - - / ' ~ r r - ~ 2C ~~-EASE#IEMT ° r - _ r I ~9~ ~ ~ 20d p 1 1 1 I 1 I I i~ II "If I v ' - q .
~ , , I II 9 6 I ~ I 1, , ~ ~i I V - c~ r' .~7, ~ ~ ~ I ~ ~A EASEMEr 11 I I /t P - ' TT_-
~ I I I _ I ~ r DIVE ~ 1 ~ ~ 1 ~ 1'.43 I Y ~r,~,l, I,"1,; , ---_x====-- - I R ION DITCH BE 1 I r I'\~ 1 1 I DIVE S / I I
i 113 I - ~ ~ - > I 115 I , , / , _ TO [ r I I I 112 111 / --I --;,r RMWATER 1' I ~ 17 TO DIRE 1 I ~1 5 r ~ a~ 14 I I O f 2 20 1 19 I 18 , ~I J I 13 I
O I 1 16 I ALEXANDER I 110 I 109 108 _ _ _ , ~ TC . I O O O I I _ 2 RONA I I~ ~ II NAWAZ~CO SCOVEL I RI S I -~~I-, O-'' v O O I 1 I O 1 I ~ TQ BM / 22 , , I f , V , , ,r I I 2 r MOYER 1 ~ WING I I . ~ I y E
~ GRUBSTEIN~McCULLOCH , I D E ~ CLEMENTS; GODFREY NORMAN I I 1 I I I I / 10l I~OX 1, TROMBETTA; vv WRIGHT 1 CURTIS I ORLEMANSKI ; vI ,r ~ I,~ BAGADE ~I ~ COX 11 ~ COWEN vv .1 ~ ~ ,1 ~ ~ I
- _J_ 1 1 ~ ~ I ~ ~ - ~ ' 1 i ~ ~ ~ 1 WICKSTRO 1 1 i °p0 °°01°°°° ° 0 I 1 I 1 °~N CApp I
I I i I 1 ! ~ ` 1 ~~i,~_ I I , I , / i i I `I r \ \ 11 I / ,l I r / °0°° +T / 0 00 I I 1 / 1 I / 1 l I r °0 ~ 00 000000 t/ 0 I I
I I I ` I ~ I ~ ; ARMANTROUYi~ I I , I , 1 '1 II I / 11 11 I / C 000 yL00 01 I
II I I ~ I,, I I I / / / I / 0 0 l / 0 ~ ~ I _-_I-__- , O ° \
~ , ~ 105 O \ _p 0 0 O
r , O O ° I LOTS 17-24 ~ °
PALMER i LMER RECORDED IN `~~OTS 12-15 _ ' , a, 9 ; F 9ao~o°,° R~C~Rfl€fl 1N ~po.p..,0•
r BM 1996 1 \r.-''~ ,--°6, S ~F 0°° 11 B~1 2000 °00o E' ~Ae°°° I
) PAGE 39 1 ,r °eeeeen °°0 I PA~E 747 'vv ,1 ~ i o o II 200
inr~ 1~7-1~R I~~i1~
I RECORDED IN 1 1 1 _ -
BM 1996 1 l 11 1 11 1 1 - SCALE; 1 ='100
LOTS 109- 116 PAGE 1415 Sheet No.
WITHERS R"ENEL RALL STORMWATER MANAGEMENT PLAN ENGINEERS I PLANNERS I SURVEYORS
No. Revision - - Date B Designer Scale ~ _ 11,V&R 1 =100 > i
sl_kEVIf W _Ct P ME-NTS _3 22 04 GAS By Date > r CARRAMORE SUBDIVISION OVERALL F!F~C 2nd REVIEW COMMENTS 4 30 04 GAS Drawn y
GAS cas 12/1 03 PHASE 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com -
- i^d 0 4/0, GAS ('perked By Iv No, C C _ I~1 M f v T _ JEC 203116 1 - -
- - - . 0000
i

/i - - - ~ y
~ ° ~ i °~s / / ~ I ~ , ~ l i , 5~ ~ 1 `
~ F 9 I i ~ ~ , ~ r r ~ ~ ~ ~
6 I 1 ~ 9
9 - ~ _ ~ ~ ~ ~ I ~ ! ~ M . ~ 9 , - ~ ~ 6
r a p / ~
1 ' - -1--- 2Sr, ,
1 ~ S ~ ~ , 1 ~ 9 1 ~ ~ ~ S , / ~ ~ 312 / i `i
I l s ~ 1 a ~ ~ ~ - 3 l , li I ~ //f1. J ~.r -
S ~ ~ i 9 0 ~ 6 . ; , / ~ ,
~ ~ 2 - - ~ i 3 I ~ _ - , ~ ~ ~
1 ~ / I s ,a ~ o
o ? / 1 ~ 199 8 j8 ~ ~ ~ 660 ~ ~ ~ 318 _ - - ~ ~
~ S ~ ~ ~ ~ - - ,i _ 1 ° l i 3
~ ~ ~ ~ \ q/~ i ~ 0 ~ ~ r~. ~ ~ ti , 1 Y ~ ~
i - 3~ I ~c {i - ~ S ~ 2 / 6 _ - -~oo ~ ~ - ' ~
- ~
~ ~ l 3~ _ - - - a ~ Q t*so _ .
~ L;a a 1~i 3~ ~ K ~ o ~5 , _ s~ / i ~ - - ~ 6 1 8 , _ , 0
l~ i l C 2~ , , _ a~ ~ ~ - ~ D~ 3 ~ , ~ 8 ~C 3 _:.9 ~ 2 , • ~ ~ 37 ~i e o ~„o, o ~ , y
1 ~ - ~ , ~ , i -
I r~' s ~ L` .378 - ~ ti o ~ , , _
1 P °~6 C Og le? ~ ~ 4 A ~ ; i i i 3 ~ n. , : cb ~ . ~ i i ~
r ~ ~ ~ 1 ~ t is ` r' a s ~ , I ~ ~ I
l ~ F ~ ~ ~s ~ 1 ? , _ ,3
9+~ 7 A' ~ I ~ ; i ~ ~ i ~4~ i f 8 i 0 ~ 1 I ~ ~ / ~I / ~ 0 _I
2 1 ~ ~ 1 ~ / ,390 v ~ ~ , p~, i r A c' ~ 1 / o\ ~ ~ 4 r ~ ;
o b ~ ~ ~ 7
2 1 J
0 6. 0 ~ ~ ~ '
/ ~ ~ ~ ~ ~ i 3 ~F ~ rj ~ ~~N ~ Fti ~ i. i ' ~9 ~ i L__ ' 6
i ~l i ~ i i -~.1-~ C! _ ~ ~ S 1 / F L_ ~ _
- 7 ~ ~ ~ E - ~ v ~ ~ ~
a
l ~ r , ~ ~ ~ ~ ~ _ N QY ;
( ~ r: ~ ~ II „ ~ - ~ ~ _ _ _ ~ 3---- ~i ~ „ i - ~ - p ~ ; to - ~ ~ ~ ~ 1
. ~ - 8 N € ~ i , i C9 2 ,2 ,w ~ i.i' % ~ 17k00 ~ ~9~ 00 `l ` - _ _ i `
1 ' I vX % ----s~-.,,. , A~ j i ~ O ~ ~ r N ~ 127 Q'' S
V - p _ ~ - - - ~ ~ g6- - r- - - _ 0 0 1~ ~ 3 ~ / ~
1 I ~ _ ~ I O S ' i 1 ~ \ X00 440:UD ~ ca - ' ~ ~ ~ ~ ~ ~ 585, ~ a _ - ~ - i ~ '
~4+ 6, E _ _ _ z - 39 ~ ~ , - - ~ D,3 • ~ ; 28
~ ~ _ - ~ 6 - - ~ o~ _ _ ~ i ,o My ~ ~ ~ / 9 ~ c
aa, o + d- N - c,, w - / _ _ ~ ~ cn ~ c _ ~ ~ ~ ~ 6 ' 1 ~ 398- 8
- ~ , - J 0 O ~ ~ N ~ ~ 1' - rn rn 3 .n ` ~ ; o . ,J~ 9 0~ i 3 - _ _ _ ~ ,
~ .:fit << ~ ~ o W - 2 Q ~ ~~8 . 99 ~ ~ g o3 i
1 1 ~ ~ _ , s ss w 9~ ~ > 3 ~ ~ ~ ~ ~ o , J 1 2 ~ - Q ~ , ~ 9
~ r~-__- ~ , ; 10~ ~t~k 1 ~ ~ s~ ~ ~ q~ S ~ - pt ~3p ~ ~ 2, - o ~ ~
I I ~ ~ ~ 3 ~ - _ ~ 5 , , J= 8 , 2 9
~ ~ ~ ~ N ~ ~ , ~ 3 ~ I o ~ s ~ - ~ _ ~ '38 ~ ~ ~ ~ ti _ _ - ~ ~ d 1 ~ ~ 1 ~ , _ J F ~ ~ ~
~ q/ ~ ~ ~ c_f1._.-~-~ z `1 j ~ i ~ , _ _ - - 162 ~ 402 ~ ~ " ~ ~ ' ~ i ~ , - ~ ~ i n ~ ~ / - i
Vr°' % I t>_. ~ r ~ ~ ~ ~ , - I ~ ~ i ~ , r i ~ q~--- . - i ~ 1~. tP, ~ i ~ i ~ I b
, fJ ~ ~ r i ~ - ~ ~ ~ I ~ ~ ~ ~ ; 1 ~ ~ ~,2~ ~ ~ w 5
I ~ I ~ ~ ~ ~ a ~1 , ~ a 564 / ~ 1 ~ ,C,.; ~ , s ~ ~ 2 Q 8~ 5 ~.1 so ~ ~ goo
~ ~ ~ ~3 ~ ~ 9 . ~ ~ ~ ti s ~ , ~ c ~ 1 r~ % SF ~ ~ S~ N j ~ ~ 2 _ ~ i
- - 50 i~~
_ ~ ~ _ - ---I - - _ - - - - - - - - ~ _ ~
I , ~ ~ ~ ~ 1 I _ _ _ r - - - i - --1- - ~ ° - ~ I
- ~ - ~ oo ~ - ~ - . -
- . _ - ~ ,
405 - - - - _ - , . _ - p ~ 405
_ - _ - - - ' ~ u~ 0 4 _ - A - - _ _ ! - - N ~ 4 ~ , ~ ~ f - _ _ - _
- - 1 , + f cn K _ 5.77 - ~ , - I
, ~ _ ~ I - ---i - -I- O - - . pp ~ M b _ - 1 - - - - -
_ i _ I 1 _ O , _ N U- ~ I i c- - -
400 ~ - - ~ - - T; _ _ - - - - - ~ ~ ~ _ - ; ~ - 400
- II _o _ - ~ _ _ ~ ~ _ - d
~ ~ - _ - - - _ ~ _ T_ ~ - - - --UGH POI T STA i7+3 97 - - -
- - - I ~ i a _ _ _ - ~ ~ ~ ~ _ HIGH P01 T ELf -393. ~ ~ - - ~ i RITC - -
~ - T- - -
- - - _ - - - _ _4a _ _ _ N _ , 395
' y. , ~ ~ _~M ICS ,
- - F- ~ - - _ - II fI , , - - _ - I _ ~ _ w- _ - _ z _ _ _ - N
~ ~ • < > fir! _ Z - - i -7 ~ 67 I ~ W - _ _ J - ~ . ~ - _ i ~ (p _ W-
- - a ~ ~ _ _ G ,l-j I- ! i ~ I 1-
F' ~ - ~ . _ , - - ~ _ wJ _ _ N ~ -N~ ~ ~ - 390
390 - - _ _
-
w~ ~ _Q - _ ~ , ~ ~ , ~ tNT-E EV = -393: - - - ~ II z ~ , - _ _ p_o _ - ~,r_ _ - : _ _ HGH P INT S A = 17+33,..1..- - - ,.Y. ~ -U_ s~_ _
, - • _ • - -
J-. _ ~ _
' PVt ELfd 39 :93 li W ~ _ _ 3.85 - -
~a _ _ _ _ .D. _ _ _ 1 _ i • J
- _ , - _ _ _ - K = 6:10 _ i ~ . - - - - _
- _ ' S - _ _ C - - , , _ _ - _
_ ~ v - i ~ - _ _ I - - 380 .
380 - ~ a- ~ ~ - ,
I ~ i _ - I ~--f-- - _ - - - _ . F • , , o _ i
L G - ~ - - - { 4 0, 04 F_ g" ~ _
w ~1 ' , i - - - _ _ _ E DETA 7 I - - - - -r------~- _ _ . -
i, _ _ ~ H--F _ ~ - - - w w, W/ SFE£t t - ~ - - _ - _ M 375 , BE i
. x ~ ~ i ~ v • - _ - w - w - - i
n ~ ~ ~ ~ I ~ - w ~ - _ _ _ _ u X - - _ I - -J - - _ , ~ i - - _ 8 Df
L 3 i _ I _ ~ i~ - - - _ _ _
i ~ - ~ o 1 ---i----~-- --1 I -
- - - co - + ~ ~ 370 ~ f~EF R TO SHEE. 14 - ~ x--- 370
. - - ~ -
Q - - - ~ - , - n I ~I , ~ N y Ul _ _ o _ _ - - - - _ f8id--~- - - _ - p00 009 ~
rv _...-L.-------- - - - ~ ~ ~ _ ~ t- 9°,~~ AR~ °oo- I _ i o
- - I ~ I - - Q -1- - -d. - - - ~ 0~0 00400 C I-000 00.. I J "o 0
- - - --T N ~ 365 - - 365
i e o - _ _ - _ _ e e _o--
~ i o e ~ ~C
_ _ - - - ~ ~ ~ I - ~ ~ O 0 O _ , ppro e y e o oo o- - - _ - - - 0 ONGIEo~ o
a I ~ i- _ 1 - 00 {1 000 000~._~p _ _ _ 0
- - - _ - - _ 360 _ - - - - _ - -~~QOOOO ooaa~~o 360
- - _ _ - - -
r.j - ~ DcV_ app D~ r~ Op ~„~Q ~m ~0p ~-00 ~A C0~ _~.~}-__O~ N 67'~ ~N W~ N O~ ,~T WN d-~ _~N N~
a ISO ~t~ _~d' ,-M OLIN DAN iD~ N.O. d-Irr) ~N ~(0 rf3? ~p ~0()-- N~ N0p N~ mod' O~_O~ ON t7~O ~Oj ~t4 ~M ~N N_j~ r~ p~l> ~ d'~ N~-_M.~ ~~__([1~_ (~M1_ Old Q~ r- ~ N~ Nr N~ N ~ M ~ ~ ~ ~ ~ ~ ~ ~ N - - - • r~ ~ N 0~ (~I ~ N ~ N _ D (71 CQ cp ~ St - td iLJ d. ~ N 0~ 0) ~ O ~ ~ ~ l0 CA ~ ~ N ~ Q - ~ ~ - ~ M1 ~ ~ _`t _ ~ 1rj. N _ N ~ ~ ~ r N N pp N'} cl' ~ Cp 1
o ~ 00 ~ O ~QI N m ~ O r~ N1 ~ - N ~ M~ r~M r~rr3 _!'')M ~M?- r!1 N}--~M N7 M~ terry- ~ r~~ ~M ~M ~M_ N) r`1~ ~ r`1~ r7~ _r~M ~N}- ~r7 _.r''7~-_ r7~. r~.~ !'~N1 r7~ r7~ Nl~ r`l~ ~M M M ''~N? r7M !'`?Ni r~ r~~ _ Mr7
0
10+00 11+00 12+00 13+00 14+00 15+00 16+00 17+00 18+00 18+00 19+00 20+00 21+00 22+00 23+00 24+00 25+00
`No.1 - - - Revision - 'A ~TOC 1st REVIEW COMMENTS 7 26 04 GAS
Date B Designer Scale 1, =5' Vert. W&R 1"=50'Horz. Sheet No.
r Drawn By Date i
o B TOC 2nd REVIEW COMMENTS 9 01 04 AS CARRAMORE SUBDIVISION o (t~ L GAS 4/1/04 R001 R2 PLAN& PROFILE WITHERS R"EN EL
° Checked By Job No. PHASE 11 0 ENGINEERS I PLANNERS I SURVEYORS
JEC 204037 111 MacKenan Drive Cary, North Carolina 27511 tel; 919.469-3340 fax; 919-467-6008 www.withersravenel.com
0

r ~ v V A ~ 1 HOIUSE I / I I I I I ! i .I ~ I I I ~ !
v ~ \ ~ ~ v v ~ ~I o ~ i i I
v v ~ v v ~ ~ v I I RIM-~3 0 75 v ~ ~ ~ v v .~Q ~ v v v ~ ~ \ , v Nir INV. ~ I =3f zIM=i3 0 75 FIELD VERIFY') I VV. ! I =3 .70 I I I A° ° A
\ ~ v ~ ~ ~ I GAS ~ A I ~ ~ v ~ ~ 2 ~ I I INV.0~1 36 f - I i i a VV. 0~1 -36 .50 I I °
GURU _ MErE ~ 1 \ ~ \ ~ ~ / \ v ~ ,c' _ _ _ ~ XlSTING 1 / ~ \ V ~ ~ ~ J A ~ ' ~ ~s~ IE I l I I I ~4 REBAR 12" o 0
~ V ~ V A ~ ~ v " ' v AC HOUSE 1 / I V t\ `V~ V A V ~ I I A A ~ ~ ~ v / 1 I I O.C. EACH WAY i/2" PREfORMEO JOINT I I ! FILLER, 12" WIDE P~suRE2RE~ ° o ° ~ru ~ I%a s~ ru~ I ' NaES /
~ ~ ~ ~ ~ \ l~ ~ \ v A v ~ ~ ~ KNIT EXISTING 1 „ ! I 4;, ~ ` Erg of wr
\ \ / \ \ ~ \ USE \ \ ~ \ ~ ~ ~I~ TO ~ LF 18 H D \ \ \ I I I ~ ~ v` v ~ ~ ~ v v v v I YI ~ I i LF 18 HD E ®3.33J% I I tiS; PLAN VIEW mil ~ oP~
~ EX ST I 1 ! ~ ! '
y v RIM-3~'5 30 _ I F \ ~ ~ ~ I - ~ ~ ~ - 1.50 I ~ \ / ~ RIM 37 I ~ ~ \ \ ~ \ I t I \ ! c~oa~lm I~a~P~E
\ ~ \ \ \ ~ ~ - INV. OUT 3 8.60 (24 "RCP ~ ~ \INV. IN =368.10 I I I I ~ \ ! OR FABAYGIED fROM I/d' I 1 ~ ! STEEL PULE.
OM T C RM ~ \ ~ 'i ~ \ 1 V. OU 367.90 I I ~ ~ \ \ ~ • 7 lF 18" HDPE`~ 7.5% ~ I I I \ ~I
~OES E / \ ~y I I \ \ \ ~ ~ ~ ~ I ~ ~ \ l~ ~ ~ ~ \ ~ ~ ~ I I I I ` ; NorES: I ~ e~'
SST RMWA ERA S ~ \ ~s _ ~ P IR FE\ I' \ \ ~ ~ RE , I I ~ ~ - - 1 ~ ~ ~ rAC~wEw nle crm+oE~ wusr er rxaar / \ ~ TME'~ ro THE 10P ov I ~ \ ! \ , ~ •i uL AROUAb la•
/ \ \ ~ ~ ~ ~ I NOT R CO C ATE ~ ~ ! ~ AND ~BRICi( 1 I ~ ~ ~ ~ v ~ v~ ~ ~ I ~ ~ ~ I I I 1 \ 2' er ~eatm ro ro'~D 1 \ e" aF msEa.
LNG 1 ~ vv ~ ~ ~ ~ AVER N ~I S P E , ~ ~ v ~ ~ ~ v ~ ~ ~ ~ - _ v ~ 1 i I 1 ~ I 1 \ i
~ ~ v S~(AL . v v v ~ ~ v~ 1 \ I I 1 \ / I ELEVATION SECTION
0. ~ 1 ~ t ~ v v ~ ~ I~ ~ ~ v ~ I I \ I x 12~ i i~~' s1EEi ~ ANGLE OR
~ 1 ft 1 I ~ ~ ~v ~ ~ i ~ v ~ ~ \ 1 I v ~ ~ I I 1 \ / ~ 1 i ~ \ I I 2000 PSf MIN.
1 ~ \ \ • ~ ~ / 1 $ ~ A b 1 1 \ v ~ v v ~ ~ ` A ~A ~ I ~ 1 V A ~ ~ ~ ~ ~ ~ I 11 1 s 1NG sET ~ / I BEARING CAPACITY SEE 8MP SEC110N fOR SIZING DArA SECTION A-A 1 I 1 BENEATH COLLAR
1 1 _ ~ ~ ~ v 2~ S~` M ~ bR .A 1 V v - ~ ~ ~ ~I I 1 \ I I I
~ ~ I ~ v ` ~ _ ~ v EASE ENN$~ ~ I I \ \ \ ~1 v . ~ ~ V v i 1 1 1 I! I H RACK I TYPICAL ANTI-'SEEP COLLAR TYPICAL TRAS 1 1 ~ I I I
I I 1 f 1 NTS NTS 1 I I \ I
~p A ~ ~ , ~ - \ u ~ I a ~ ~ ~ ~ LF 18 F~ E ~ 2.78% ~ ~ R I II I II I
~ , a - V V ~ 1 ~ ~ V A I I I II I a I o 9 99
i 1 Q N S o ~ v v A I 1 ~I vvv~, I a rr a l . a I 1 VENT THROUGH rr I SCREEN ACCESSIBLE
v ~I vv v ~ _ _ _ ~ - - r ~ DOOR
~ I ~ I v ~ ~ v ~ - ' ~ x4 BOX v ~ , , _ v I, I R F 10 ~ _r - I -
I ~ 1 _ v - _ - _ - 9 1 NOTE: - ~ \ I - ~1_ _ / \ SKIMMER MAY VARY
i ~ \ I SLIGHTLY FROM
~ I ~ ~ \ \ ~ ~ - ~ I TR - - - ~ f \I ILLUSTRATION
~ "I ~I ` v ~ I ~~I v - v 1 ~ ~ ~ ~ ~ ' ~ ~ ~ ~ ~ v XIS G ~ v I , I~ ! / I 1 i 11
/ I 1 I 11 / ~ I ~
' I . 5 E Lv - ~ v ~ ( ~ ~ v ~ ~ ~ ~ _ I I ~ ti ~ \ FLOAT 1
IN~~3 .75 ~ v ~D R \ , ~ \ ~ _ \ ~ I I
IM=383.50 ' ~ ~ ~ ~ v i '`b~ ~ ~ v ` v v ~ ~ I V. IN =373.0 , ~ I 1 1 i \ I
~ \ 1 ~ \ \ i ~ \ + I \V. OUT=373.0 1 ~ ~ I OUTLET END; CONNECTION
~ ' ~ ~ ~ P v 0.7 0 ~ v ~ .vv I I v ~ I ~ ~ I TO OUTLET PIPE OR RISER BARREL PIPE LONGER THAN I! I SHOWN
. ~ ~ ~ ~ v I v ~ ~ ~ ~v 1v i 1 v I ~ , Iv ~ F ~ ~ , v • ~ 1 v v - D S i~ N I NOT INCLUDED WITH SKIMMER
A - A I v S ~~v ~ 1 F ~ v ~ v ?1 I 1 SUPPLIED BY USER
- \ - ` \ ~ ~ 18~ "0-RING"I CP ®1.51%~• \ 53 F ` rl I I / ll 1 I
_ _ ~ I ~ i 1 1 I FLEXIBLE JOINT
XIS M ~ ~ ~ . I! v \ ~ , 1 \ ~ .EROSION CONTROL I \ 1 ~ ~ i I 1 I
I \ \ , \ \ I ~ I,,\ ` 1 ~ EXT ~1D L EL BERM-TO' BE R,E~IOVED, ~ / ~ I ~ ~ ~ i I 1 I BMP SKIMMER DETAIL
i I 1 I i I 1 I NTS
I ~EAQER A ~ ADED FL,A'I` AN ~ \ ~ ~ ~ ~ \ ~ \ ~ I ~ v / ~`v ~ i 1 1 ~ v~ ~ ~L_I UIR T + D. / ~ ~ vv I 1 I
ST ~ ~'t 1A E v A ~v I ! , \ \ v r I 1 I _ -W PND r 1 EASt DRY POND FOR EROSION CONTROL ONLY BMP 3 ET 0 I POND
'r' R®VI E \ \ / i I \ \ I 1 I 'mmer w 2" head I I Skimmer to Use: 4" Skimmer w 3.3" head Skimmer to Use: 2 Skl / I /
I I - Volume to be Drained = 2,672 cu, ft I Volume to be Drained - 37,100 cu, ff.
I\ _ _ I ~ ~ / i \ ~ J \ \ \ r I I I Draw Down Time = 3 days Drow Down Time = 2 days
r I I i 1.19 s. In. i I Orifice Area = 8,5 sq. in. Onfice Area q
i Orifice Diameter = 1.2 inches T POND I I I Orifice Diameter 3.29 inches -
\ \ 1 ~ \ \ ~ \ I I Qout = 0.15 cfs Qout - 0.02 cis B • TTOM POND = }314.00 I I
~ SER = 4'x4' ~ 1~
~ ~ASREI. ~1 1F l8':,RGY. ~ 15 i_, ~ + ~ I-
\ 1' I
\ \ I \ ~ / ~ ' PEAK FLOW ATfENIJAIiON
4'x4' PRECAST
i RCP BOX A_~
I
n ~ SCALE: 1 " = 30'
SCALE: 1 = 30 " = 30' 1/~"x 2' STEEHOR~BOL15
2 - 3/4" ANC 2 STRAPS REO'O
'0-RING' JOINT NOTE:
PLACE STEM SUPPORTS
RCP RISER RCP RISER ~ AT J~ FROM BASE
1' MIN. FREEBOARD TOP OF DAM EL. 384.0 e~
1' MIN. FREEBOARD 1' MIN. FR TOP OF DAM EL. 360.0 WATER LEVEL DURING STORM ! ~~,t GROUT EACH SIDE h ~
WATER LEVEL DURING STORM TRASH H00 100 YR. EL= 358.97 TRASH H00 100 YR. EL= 380,7 ,1~'
11= _ _ ~
- _ 11=III=III- - - _ ~ -III= = I- (~=11~.I~~- I i i JOINT SEALED h7TH A-LOCK NEOPRENE I- II I I GASKET CAST IN MANHOLE WALL
- I I -I I - - I I ~ - - ~ - - ~ I I- - PEAK FLOW ATTENUATION POOL - - -I I ~ I I
~ I - - T NUATION POOL - 'I I -1 ~ I = _ I_I ~ I-= - PEAK FLOW ATE _ - -III-111= 4" NRS GATE VALVE I I _ ~ II
-i i I -1 I I-_-_ 11= _ - _ ~ I I- - - - = NIMUM SLOPE 3 : 1 -I I I-I ~ PERMANENT- I- MI = MINIMUM SLOPE 3 : 1 ORIFICE SIZE PER BMP TABLES '0-RING' CASKETED
-III-,I~-_ ~ ~ _ _ _ - _I _ - - I_ 111_111_= _ Pool - I_I I I-= - ~ ~ I=III- - - ~ ~ I- SKIMMER ATTACH 1EMPORARY I CLASS III RCP _j •I FOR EROSION CONTROL I I
=1 - - - _I -1 I I-I - it _ II , -111-I II_ _ _ _ II PHASE OF PROJECT - ARTH DAM I I
-ill_ - - - - - ARTH DAM .III III- _ -II-I~,. _ _I _I I I_ _ I i_I , _ .I I ~ - - I - _ _ - / I I I~- - / / / / / / / / / / / /
-I I - I I-1 I I - ~ ~ . ~ I I_I I I_ - II- - _ I_ , , n A -III- .y _ - I- ~ \ \ \ \ \ \ \ \ \ \ \ \ PAVED INVERT .x•a~ GROUT 6" III - i\
-III- y - III-~ , - 6 x4,5 x9 CLASS - - - _ _ _ _ _ _ ~ I I I=111= =_=1 I 1=1 I I=III= - -III-I - I-i ~ I RIP RAP DISSIPATOR PAD - -
_ _ _ _ _ - - - III=1 =III=III=III=III= I -I -III-III-III-III- I- _ -I ~ W FABRIC LINER - - - -i ~ ~-I - - - ~ / - - - I-III- I - II-III- I_ _ \ \ \ \ ° .u
_ I_ II _ _ _IIITII ,III_ - =1 I ITI I I I ~ ,III-III = = VzS=2.7 ft/sec ~ -1 I ~ I I 1=1 I I-1 I I=~ ANTI-FLOATATION DEVICE .,III-ICI- - , ~ a ~ , I ITT-I - \ . '
ANTI-FLOATATION DEVICE ~ ~ _il_-- /r I,,,III_III = _ \ I. ~_I I I-= _ -
" 111,;,111= I = _ Z " _III=III= -
} ANTI-SEEP COLLAR I I=1I I-1I I=1 = ~ ANTI-SEEP COLLAR w - LAR ~ -I ~ ~-1 I I=1 I-
> -1 I 1 =1 11.=1 I 1=1 ~ I RAND OUTLET PIPE SHALL ~ , ~ ~ ~ NOTE: RISER BARREL, SKIMME l i -1 11=1 I I-1 I I- _ RISER & DRAWDOWN DEVICE DETAIL FOR DRY POND
~ 60 LF 18" I R TO THE BEGINNING cn RCP OUTLET PIPE BE INSTALLED PR 0 N1S
~ ®0.67 OF OVERALL SITE GRADING AND SHALL BE
~ UTILIZED AS A SEDIMENT CONTROL DEVICE z WET POND BARREL
~ DURING ROADWAY AND UTILITY CONSTRUCTION. 53 LF 18" "0-RING GASKET" ~ ®1.51% N REFER NOTE: FULLY COATED CMP MAY BE USED
w ONCE SITE HAS BEEN STABILIZED AND GRADING NOTES: 1) FOR BMP#3 WET PO D
? IS COMPLETED THE BASIN SHALL BE CLEANED - AS AN ALTERNATE TO THE RCP TO DETAIL ON SHEETS 2
z OUT AND STABILIZED. THE SKIMMER DEVICE HIS SHEET. RISER BARREL STRUCTURE AND DESIGN DATA T
SHALL BE REMOVED. w
z w 2 CONTRACTOR SHALL VERIFYY LOCATION
> OF ALL UTILITIES PRIOR TO CONSTRUCTION.
R SHALL COORDINATE CONSTRUCTION 3 CONTRACTO
DIMENSIONS ELEV. WNERS. WITH ADJOINING 0
~ NOTE: RISER BARREL SKIMMER AND OUTLET PIPE SHALL w TOP OF DAM WIDTH 10 360.0 ' DIMENSIONS ELEV.
_ BE INSTALLED PRIOR TO THE BEGINNING - ANTI-SEEP COLLAR 60 x 60 N A E NORMAL 4 YI IS PREFABRICATED ADS TYPE YARD INLET.
3 OF OVERALL SITE GRADING AND SHALL B NORMAL POOL 3,785 SF 378.0
~ 1-YEAR STORM ORIFICE 9" CIRCULAR 353.0 UTILIZED AS A SEDIMENT CONTROL DEVICE p g~ a PON POND BOTTOM 1,100 SF 374.0 ~N CARp
TOP OF ANTI-FLOATATION 6'x6'x2' 353.0 DURING ROADWAY AND UTILITY CONSTRUCTION. N TOP OF AM WIDTH 10 FT. 384.0 0• Ssf TOP OFD ~ o . a`~
N RISER 4'x4' BOX 358.75 ONCE SITE HAS BEEN STABILIZED AND GRADING _ TOP OF ANTI SE - LAR 60" x 60" N A APPROVED :4~` ANTI SEEP COL • s
0 18" RCP 353.0 IS COMPLETED THE BASIN SHALL BE CLEANED OUTLET PIPE INVERT IN 1-YEAR - 2" SKIMMER 378.0 CARP ~ s 1 YEAR STORM ORIFICE TOWN OF
" 352.6 OUT AND STABILIZED. THE SKIMMER DEVICE > B~ v°
Q OUTLET PIPE INVERT OUT 18 RCP TOP OF " SHALL BE REMOVED. TOP OF ANTI-FLOATATION 7 x7 x2 374.0 A roved b Date 9 PP Y
c rn~ nr rno nr Atop 4 Y4 Rf'.P R(1X 3R~.0 01,,.,.,1.,,, n~+p Fr _ _.~F
i Vf VI O IVf VI IV..1LfN r.... i f%Aiiiifny sp
-OUTLET OUTLET PIPE INVERT IN 18ff RCP 374.0 Engineering Dote 01.00~ Is%
OUTLET OUTLET PIPE INVERT OUT 18 RCP 373.2011 del
No, Revision Date B
A TOC 1st REVIEW COMMENTS 3/22/04 GAS Sheet No.
= Designer Scale
6 B TOC 2nd REVIEW COMMENTS 4/30/04 GAS ° ° C REPLOTS W&R 1"=30' M 5/27/0 4 GAS 9 D REVISED BMP 3 OUTFALL 6/15/04 JEC Drawn By Date CARRAMORE SUBDIVISION STOP WITHERS R"ENEL STORMWATER MANAGEMENT PLAN. ENGINEERS I PLANNERS I SURVEYORS
cr)
C) E DWQ COMMENTS 10/5 04, GAS GAS 12/1/03 ° Checked B gab No. PHASE 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel,com
F DWO COMMENTS 0 14 0 GAS y
JEC 203116.1 0
0

/i - - - ~ y
~ ° ~ i °~s / / ~ I ~ , ~ l i , 5~ ~ 1 `
~ F 9 I i ~ ~ , ~ r r ~ ~ ~ ~
6 I 1 ~ 9
9 - ~ _ ~ ~ ~ ~ I ~ ! ~ M . ~ 9 , - ~ ~ 6
r a p / ~
1 ' - -1--- 2Sr, ,
1 ~ S ~ ~ , 1 ~ 9 1 ~ ~ ~ S , / ~ ~ 312 / i `i
I l s ~ 1 a ~ ~ ~ - 3 l , li I ~ //f1. J ~.r -
S ~ ~ i 9 0 ~ 6 . ; , / ~ ,
~ ~ 2 - - ~ i 3 I ~ _ - , ~ ~ ~
1 ~ / I s ,a ~ o
o ? / 1 ~ 199 8 j8 ~ ~ ~ 660 ~ ~ ~ 318 _ - - ~ ~
~ S ~ ~ ~ ~ - - ,i _ 1 ° l i 3
~ ~ ~ ~ \ q/~ i ~ 0 ~ ~ r~. ~ ~ ti , 1 Y ~ ~
i - 3~ I ~c {i - ~ S ~ 2 / 6 _ - -~oo ~ ~ - ' ~
- ~
~ ~ l 3~ _ - - - a ~ Q t*so _ .
~ L;a a 1~i 3~ ~ K ~ o ~5 , _ s~ / i ~ - - ~ 6 1 8 , _ , 0
l~ i l C 2~ , , _ a~ ~ ~ - ~ D~ 3 ~ , ~ 8 ~C 3 _:.9 ~ 2 , • ~ ~ 37 ~i e o ~„o, o ~ , y
1 ~ - ~ , ~ , i -
I r~' s ~ L` .378 - ~ ti o ~ , , _
1 P °~6 C Og le? ~ ~ 4 A ~ ; i i i 3 ~ n. , : cb ~ . ~ i i ~
r ~ ~ ~ 1 ~ t is ` r' a s ~ , I ~ ~ I
l ~ F ~ ~ ~s ~ 1 ? , _ ,3
9+~ 7 A' ~ I ~ ; i ~ ~ i ~4~ i f 8 i 0 ~ 1 I ~ ~ / ~I / ~ 0 _I
2 1 ~ ~ 1 ~ / ,390 v ~ ~ , p~, i r A c' ~ 1 / o\ ~ ~ 4 r ~ ;
o b ~ ~ ~ 7
2 1 J
0 6. 0 ~ ~ ~ '
/ ~ ~ ~ ~ ~ i 3 ~F ~ rj ~ ~~N ~ Fti ~ i. i ' ~9 ~ i L__ ' 6
i ~l i ~ i i -~.1-~ C! _ ~ ~ S 1 / F L_ ~ _
- 7 ~ ~ ~ E - ~ v ~ ~ ~
a
l ~ r , ~ ~ ~ ~ ~ _ N QY ;
( ~ r: ~ ~ II „ ~ - ~ ~ _ _ _ ~ 3---- ~i ~ „ i - ~ - p ~ ; to - ~ ~ ~ ~ 1
. ~ - 8 N € ~ i , i C9 2 ,2 ,w ~ i.i' % ~ 17k00 ~ ~9~ 00 `l ` - _ _ i `
1 ' I vX % ----s~-.,,. , A~ j i ~ O ~ ~ r N ~ 127 Q'' S
V - p _ ~ - - - ~ ~ g6- - r- - - _ 0 0 1~ ~ 3 ~ / ~
1 I ~ _ ~ I O S ' i 1 ~ \ X00 440:UD ~ ca - ' ~ ~ ~ ~ ~ ~ 585, ~ a _ - ~ - i ~ '
~4+ 6, E _ _ _ z - 39 ~ ~ , - - ~ D,3 • ~ ; 28
~ ~ _ - ~ 6 - - ~ o~ _ _ ~ i ,o My ~ ~ ~ / 9 ~ c
aa, o + d- N - c,, w - / _ _ ~ ~ cn ~ c _ ~ ~ ~ ~ 6 ' 1 ~ 398- 8
- ~ , - J 0 O ~ ~ N ~ ~ 1' - rn rn 3 .n ` ~ ; o . ,J~ 9 0~ i 3 - _ _ _ ~ ,
~ .:fit << ~ ~ o W - 2 Q ~ ~~8 . 99 ~ ~ g o3 i
1 1 ~ ~ _ , s ss w 9~ ~ > 3 ~ ~ ~ ~ ~ o , J 1 2 ~ - Q ~ , ~ 9
~ r~-__- ~ , ; 10~ ~t~k 1 ~ ~ s~ ~ ~ q~ S ~ - pt ~3p ~ ~ 2, - o ~ ~
I I ~ ~ ~ 3 ~ - _ ~ 5 , , J= 8 , 2 9
~ ~ ~ ~ N ~ ~ , ~ 3 ~ I o ~ s ~ - ~ _ ~ '38 ~ ~ ~ ~ ti _ _ - ~ ~ d 1 ~ ~ 1 ~ , _ J F ~ ~ ~
~ q/ ~ ~ ~ c_f1._.-~-~ z `1 j ~ i ~ , _ _ - - 162 ~ 402 ~ ~ " ~ ~ ' ~ i ~ , - ~ ~ i n ~ ~ / - i
Vr°' % I t>_. ~ r ~ ~ ~ ~ , - I ~ ~ i ~ , r i ~ q~--- . - i ~ 1~. tP, ~ i ~ i ~ I b
, fJ ~ ~ r i ~ - ~ ~ ~ I ~ ~ ~ ~ ; 1 ~ ~ ~,2~ ~ ~ w 5
I ~ I ~ ~ ~ ~ a ~1 , ~ a 564 / ~ 1 ~ ,C,.; ~ , s ~ ~ 2 Q 8~ 5 ~.1 so ~ ~ goo
~ ~ ~ ~3 ~ ~ 9 . ~ ~ ~ ti s ~ , ~ c ~ 1 r~ % SF ~ ~ S~ N j ~ ~ 2 _ ~ i
- - 50 i~~
_ ~ ~ _ - ---I - - _ - - - - - - - - ~ _ ~
I , ~ ~ ~ ~ 1 I _ _ _ r - - - i - --1- - ~ ° - ~ I
- ~ - ~ oo ~ - ~ - . -
- . _ - ~ ,
405 - - - - _ - , . _ - p ~ 405
_ - _ - - - ' ~ u~ 0 4 _ - A - - _ _ ! - - N ~ 4 ~ , ~ ~ f - _ _ - _
- - 1 , + f cn K _ 5.77 - ~ , - I
, ~ _ ~ I - ---i - -I- O - - . pp ~ M b _ - 1 - - - - -
_ i _ I 1 _ O , _ N U- ~ I i c- - -
400 ~ - - ~ - - T; _ _ - - - - - ~ ~ ~ _ - ; ~ - 400
- II _o _ - ~ _ _ ~ ~ _ - d
~ ~ - _ - - - _ ~ _ T_ ~ - - - --UGH POI T STA i7+3 97 - - -
- - - I ~ i a _ _ _ - ~ ~ ~ ~ _ HIGH P01 T ELf -393. ~ ~ - - ~ i RITC - -
~ - T- - -
- - - _ - - - _ _4a _ _ _ N _ , 395
' y. , ~ ~ _~M ICS ,
- - F- ~ - - _ - II fI , , - - _ - I _ ~ _ w- _ - _ z _ _ _ - N
~ ~ • < > fir! _ Z - - i -7 ~ 67 I ~ W - _ _ J - ~ . ~ - _ i ~ (p _ W-
- - a ~ ~ _ _ G ,l-j I- ! i ~ I 1-
F' ~ - ~ . _ , - - ~ _ wJ _ _ N ~ -N~ ~ ~ - 390
390 - - _ _
-
w~ ~ _Q - _ ~ , ~ ~ , ~ tNT-E EV = -393: - - - ~ II z ~ , - _ _ p_o _ - ~,r_ _ - : _ _ HGH P INT S A = 17+33,..1..- - - ,.Y. ~ -U_ s~_ _
, - • _ • - -
J-. _ ~ _
' PVt ELfd 39 :93 li W ~ _ _ 3.85 - -
~a _ _ _ _ .D. _ _ _ 1 _ i • J
- _ , - _ _ _ - K = 6:10 _ i ~ . - - - - _
- _ ' S - _ _ C - - , , _ _ - _
_ ~ v - i ~ - _ _ I - - 380 .
380 - ~ a- ~ ~ - ,
I ~ i _ - I ~--f-- - _ - - - _ . F • , , o _ i
L G - ~ - - - { 4 0, 04 F_ g" ~ _
w ~1 ' , i - - - _ _ _ E DETA 7 I - - - - -r------~- _ _ . -
i, _ _ ~ H--F _ ~ - - - w w, W/ SFE£t t - ~ - - _ - _ M 375 , BE i
. x ~ ~ i ~ v • - _ - w - w - - i
n ~ ~ ~ ~ I ~ - w ~ - _ _ _ _ u X - - _ I - -J - - _ , ~ i - - _ 8 Df
L 3 i _ I _ ~ i~ - - - _ _ _
i ~ - ~ o 1 ---i----~-- --1 I -
- - - co - + ~ ~ 370 ~ f~EF R TO SHEE. 14 - ~ x--- 370
. - - ~ -
Q - - - ~ - , - n I ~I , ~ N y Ul _ _ o _ _ - - - - _ f8id--~- - - _ - p00 009 ~
rv _...-L.-------- - - - ~ ~ ~ _ ~ t- 9°,~~ AR~ °oo- I _ i o
- - I ~ I - - Q -1- - -d. - - - ~ 0~0 00400 C I-000 00.. I J "o 0
- - - --T N ~ 365 - - 365
i e o - _ _ - _ _ e e _o--
~ i o e ~ ~C
_ _ - - - ~ ~ ~ I - ~ ~ O 0 O _ , ppro e y e o oo o- - - _ - - - 0 ONGIEo~ o
a I ~ i- _ 1 - 00 {1 000 000~._~p _ _ _ 0
- - - _ - - _ 360 _ - - - - _ - -~~QOOOO ooaa~~o 360
- - _ _ - - -
r.j - ~ DcV_ app D~ r~ Op ~„~Q ~m ~0p ~-00 ~A C0~ _~.~}-__O~ N 67'~ ~N W~ N O~ ,~T WN d-~ _~N N~
a ISO ~t~ _~d' ,-M OLIN DAN iD~ N.O. d-Irr) ~N ~(0 rf3? ~p ~0()-- N~ N0p N~ mod' O~_O~ ON t7~O ~Oj ~t4 ~M ~N N_j~ r~ p~l> ~ d'~ N~-_M.~ ~~__([1~_ (~M1_ Old Q~ r- ~ N~ Nr N~ N ~ M ~ ~ ~ ~ ~ ~ ~ ~ N - - - • r~ ~ N 0~ (~I ~ N ~ N _ D (71 CQ cp ~ St - td iLJ d. ~ N 0~ 0) ~ O ~ ~ ~ l0 CA ~ ~ N ~ Q - ~ ~ - ~ M1 ~ ~ _`t _ ~ 1rj. N _ N ~ ~ ~ r N N pp N'} cl' ~ Cp 1
o ~ 00 ~ O ~QI N m ~ O r~ N1 ~ - N ~ M~ r~M r~rr3 _!'')M ~M?- r!1 N}--~M N7 M~ terry- ~ r~~ ~M ~M ~M_ N) r`1~ ~ r`1~ r7~ _r~M ~N}- ~r7 _.r''7~-_ r7~. r~.~ !'~N1 r7~ r7~ Nl~ r`l~ ~M M M ''~N? r7M !'`?Ni r~ r~~ _ Mr7
0
10+00 11+00 12+00 13+00 14+00 15+00 16+00 17+00 18+00 18+00 19+00 20+00 21+00 22+00 23+00 24+00 25+00
`No.1 - - - Revision - 'A ~TOC 1st REVIEW COMMENTS 7 26 04 GAS
Date B Designer Scale 1, =5' Vert. W&R 1"=50'Horz. Sheet No.
r Drawn By Date i
o B TOC 2nd REVIEW COMMENTS 9 01 04 AS CARRAMORE SUBDIVISION o (t~ L GAS 4/1/04 R001 R2 PLAN& PROFILE WITHERS R"EN EL
° Checked By Job No. PHASE 11 0 ENGINEERS I PLANNERS I SURVEYORS
JEC 204037 111 MacKenan Drive Cary, North Carolina 27511 tel; 919.469-3340 fax; 919-467-6008 www.withersravenel.com
0

r ~ v V A ~ 1 HOIUSE I / I I I I I ! i .I ~ I I I ~ !
v ~ \ ~ ~ v v ~ ~I o ~ i i I
v v ~ v v ~ ~ v I I RIM-~3 0 75 v ~ ~ ~ v v .~Q ~ v v v ~ ~ \ , v Nir INV. ~ I =3f zIM=i3 0 75 FIELD VERIFY') I VV. ! I =3 .70 I I I A° ° A
\ ~ v ~ ~ ~ I GAS ~ A I ~ ~ v ~ ~ 2 ~ I I INV.0~1 36 f - I i i a VV. 0~1 -36 .50 I I °
GURU _ MErE ~ 1 \ ~ \ ~ ~ / \ v ~ ,c' _ _ _ ~ XlSTING 1 / ~ \ V ~ ~ ~ J A ~ ' ~ ~s~ IE I l I I I ~4 REBAR 12" o 0
~ V ~ V A ~ ~ v " ' v AC HOUSE 1 / I V t\ `V~ V A V ~ I I A A ~ ~ ~ v / 1 I I O.C. EACH WAY i/2" PREfORMEO JOINT I I ! FILLER, 12" WIDE P~suRE2RE~ ° o ° ~ru ~ I%a s~ ru~ I ' NaES /
~ ~ ~ ~ ~ \ l~ ~ \ v A v ~ ~ ~ KNIT EXISTING 1 „ ! I 4;, ~ ` Erg of wr
\ \ / \ \ ~ \ USE \ \ ~ \ ~ ~ ~I~ TO ~ LF 18 H D \ \ \ I I I ~ ~ v` v ~ ~ ~ v v v v I YI ~ I i LF 18 HD E ®3.33J% I I tiS; PLAN VIEW mil ~ oP~
~ EX ST I 1 ! ~ ! '
y v RIM-3~'5 30 _ I F \ ~ ~ ~ I - ~ ~ ~ - 1.50 I ~ \ / ~ RIM 37 I ~ ~ \ \ ~ \ I t I \ ! c~oa~lm I~a~P~E
\ ~ \ \ \ ~ ~ - INV. OUT 3 8.60 (24 "RCP ~ ~ \INV. IN =368.10 I I I I ~ \ ! OR FABAYGIED fROM I/d' I 1 ~ ! STEEL PULE.
OM T C RM ~ \ ~ 'i ~ \ 1 V. OU 367.90 I I ~ ~ \ \ ~ • 7 lF 18" HDPE`~ 7.5% ~ I I I \ ~I
~OES E / \ ~y I I \ \ \ ~ ~ ~ ~ I ~ ~ \ l~ ~ ~ ~ \ ~ ~ ~ I I I I ` ; NorES: I ~ e~'
SST RMWA ERA S ~ \ ~s _ ~ P IR FE\ I' \ \ ~ ~ RE , I I ~ ~ - - 1 ~ ~ ~ rAC~wEw nle crm+oE~ wusr er rxaar / \ ~ TME'~ ro THE 10P ov I ~ \ ! \ , ~ •i uL AROUAb la•
/ \ \ ~ ~ ~ ~ I NOT R CO C ATE ~ ~ ! ~ AND ~BRICi( 1 I ~ ~ ~ ~ v ~ v~ ~ ~ I ~ ~ ~ I I I 1 \ 2' er ~eatm ro ro'~D 1 \ e" aF msEa.
LNG 1 ~ vv ~ ~ ~ ~ AVER N ~I S P E , ~ ~ v ~ ~ ~ v ~ ~ ~ ~ - _ v ~ 1 i I 1 ~ I 1 \ i
~ ~ v S~(AL . v v v ~ ~ v~ 1 \ I I 1 \ / I ELEVATION SECTION
0. ~ 1 ~ t ~ v v ~ ~ I~ ~ ~ v ~ I I \ I x 12~ i i~~' s1EEi ~ ANGLE OR
~ 1 ft 1 I ~ ~ ~v ~ ~ i ~ v ~ ~ \ 1 I v ~ ~ I I 1 \ / ~ 1 i ~ \ I I 2000 PSf MIN.
1 ~ \ \ • ~ ~ / 1 $ ~ A b 1 1 \ v ~ v v ~ ~ ` A ~A ~ I ~ 1 V A ~ ~ ~ ~ ~ ~ I 11 1 s 1NG sET ~ / I BEARING CAPACITY SEE 8MP SEC110N fOR SIZING DArA SECTION A-A 1 I 1 BENEATH COLLAR
1 1 _ ~ ~ ~ v 2~ S~` M ~ bR .A 1 V v - ~ ~ ~ ~I I 1 \ I I I
~ ~ I ~ v ` ~ _ ~ v EASE ENN$~ ~ I I \ \ \ ~1 v . ~ ~ V v i 1 1 1 I! I H RACK I TYPICAL ANTI-'SEEP COLLAR TYPICAL TRAS 1 1 ~ I I I
I I 1 f 1 NTS NTS 1 I I \ I
~p A ~ ~ , ~ - \ u ~ I a ~ ~ ~ ~ LF 18 F~ E ~ 2.78% ~ ~ R I II I II I
~ , a - V V ~ 1 ~ ~ V A I I I II I a I o 9 99
i 1 Q N S o ~ v v A I 1 ~I vvv~, I a rr a l . a I 1 VENT THROUGH rr I SCREEN ACCESSIBLE
v ~I vv v ~ _ _ _ ~ - - r ~ DOOR
~ I ~ I v ~ ~ v ~ - ' ~ x4 BOX v ~ , , _ v I, I R F 10 ~ _r - I -
I ~ 1 _ v - _ - _ - 9 1 NOTE: - ~ \ I - ~1_ _ / \ SKIMMER MAY VARY
i ~ \ I SLIGHTLY FROM
~ I ~ ~ \ \ ~ ~ - ~ I TR - - - ~ f \I ILLUSTRATION
~ "I ~I ` v ~ I ~~I v - v 1 ~ ~ ~ ~ ~ ' ~ ~ ~ ~ ~ v XIS G ~ v I , I~ ! / I 1 i 11
/ I 1 I 11 / ~ I ~
' I . 5 E Lv - ~ v ~ ( ~ ~ v ~ ~ ~ ~ _ I I ~ ti ~ \ FLOAT 1
IN~~3 .75 ~ v ~D R \ , ~ \ ~ _ \ ~ I I
IM=383.50 ' ~ ~ ~ ~ v i '`b~ ~ ~ v ` v v ~ ~ I V. IN =373.0 , ~ I 1 1 i \ I
~ \ 1 ~ \ \ i ~ \ + I \V. OUT=373.0 1 ~ ~ I OUTLET END; CONNECTION
~ ' ~ ~ ~ P v 0.7 0 ~ v ~ .vv I I v ~ I ~ ~ I TO OUTLET PIPE OR RISER BARREL PIPE LONGER THAN I! I SHOWN
. ~ ~ ~ ~ v I v ~ ~ ~ ~v 1v i 1 v I ~ , Iv ~ F ~ ~ , v • ~ 1 v v - D S i~ N I NOT INCLUDED WITH SKIMMER
A - A I v S ~~v ~ 1 F ~ v ~ v ?1 I 1 SUPPLIED BY USER
- \ - ` \ ~ ~ 18~ "0-RING"I CP ®1.51%~• \ 53 F ` rl I I / ll 1 I
_ _ ~ I ~ i 1 1 I FLEXIBLE JOINT
XIS M ~ ~ ~ . I! v \ ~ , 1 \ ~ .EROSION CONTROL I \ 1 ~ ~ i I 1 I
I \ \ , \ \ I ~ I,,\ ` 1 ~ EXT ~1D L EL BERM-TO' BE R,E~IOVED, ~ / ~ I ~ ~ ~ i I 1 I BMP SKIMMER DETAIL
i I 1 I i I 1 I NTS
I ~EAQER A ~ ADED FL,A'I` AN ~ \ ~ ~ ~ ~ \ ~ \ ~ I ~ v / ~`v ~ i 1 1 ~ v~ ~ ~L_I UIR T + D. / ~ ~ vv I 1 I
ST ~ ~'t 1A E v A ~v I ! , \ \ v r I 1 I _ -W PND r 1 EASt DRY POND FOR EROSION CONTROL ONLY BMP 3 ET 0 I POND
'r' R®VI E \ \ / i I \ \ I 1 I 'mmer w 2" head I I Skimmer to Use: 4" Skimmer w 3.3" head Skimmer to Use: 2 Skl / I /
I I - Volume to be Drained = 2,672 cu, ft I Volume to be Drained - 37,100 cu, ff.
I\ _ _ I ~ ~ / i \ ~ J \ \ \ r I I I Draw Down Time = 3 days Drow Down Time = 2 days
r I I i 1.19 s. In. i I Orifice Area = 8,5 sq. in. Onfice Area q
i Orifice Diameter = 1.2 inches T POND I I I Orifice Diameter 3.29 inches -
\ \ 1 ~ \ \ ~ \ I I Qout = 0.15 cfs Qout - 0.02 cis B • TTOM POND = }314.00 I I
~ SER = 4'x4' ~ 1~
~ ~ASREI. ~1 1F l8':,RGY. ~ 15 i_, ~ + ~ I-
\ 1' I
\ \ I \ ~ / ~ ' PEAK FLOW ATfENIJAIiON
4'x4' PRECAST
i RCP BOX A_~
I
n ~ SCALE: 1 " = 30'
SCALE: 1 = 30 " = 30' 1/~"x 2' STEEHOR~BOL15
2 - 3/4" ANC 2 STRAPS REO'O
'0-RING' JOINT NOTE:
PLACE STEM SUPPORTS
RCP RISER RCP RISER ~ AT J~ FROM BASE
1' MIN. FREEBOARD TOP OF DAM EL. 384.0 e~
1' MIN. FREEBOARD 1' MIN. FR TOP OF DAM EL. 360.0 WATER LEVEL DURING STORM ! ~~,t GROUT EACH SIDE h ~
WATER LEVEL DURING STORM TRASH H00 100 YR. EL= 358.97 TRASH H00 100 YR. EL= 380,7 ,1~'
11= _ _ ~
- _ 11=III=III- - - _ ~ -III= = I- (~=11~.I~~- I i i JOINT SEALED h7TH A-LOCK NEOPRENE I- II I I GASKET CAST IN MANHOLE WALL
- I I -I I - - I I ~ - - ~ - - ~ I I- - PEAK FLOW ATTENUATION POOL - - -I I ~ I I
~ I - - T NUATION POOL - 'I I -1 ~ I = _ I_I ~ I-= - PEAK FLOW ATE _ - -III-111= 4" NRS GATE VALVE I I _ ~ II
-i i I -1 I I-_-_ 11= _ - _ ~ I I- - - - = NIMUM SLOPE 3 : 1 -I I I-I ~ PERMANENT- I- MI = MINIMUM SLOPE 3 : 1 ORIFICE SIZE PER BMP TABLES '0-RING' CASKETED
-III-,I~-_ ~ ~ _ _ _ - _I _ - - I_ 111_111_= _ Pool - I_I I I-= - ~ ~ I=III- - - ~ ~ I- SKIMMER ATTACH 1EMPORARY I CLASS III RCP _j •I FOR EROSION CONTROL I I
=1 - - - _I -1 I I-I - it _ II , -111-I II_ _ _ _ II PHASE OF PROJECT - ARTH DAM I I
-ill_ - - - - - ARTH DAM .III III- _ -II-I~,. _ _I _I I I_ _ I i_I , _ .I I ~ - - I - _ _ - / I I I~- - / / / / / / / / / / / /
-I I - I I-1 I I - ~ ~ . ~ I I_I I I_ - II- - _ I_ , , n A -III- .y _ - I- ~ \ \ \ \ \ \ \ \ \ \ \ \ PAVED INVERT .x•a~ GROUT 6" III - i\
-III- y - III-~ , - 6 x4,5 x9 CLASS - - - _ _ _ _ _ _ ~ I I I=111= =_=1 I 1=1 I I=III= - -III-I - I-i ~ I RIP RAP DISSIPATOR PAD - -
_ _ _ _ _ - - - III=1 =III=III=III=III= I -I -III-III-III-III- I- _ -I ~ W FABRIC LINER - - - -i ~ ~-I - - - ~ / - - - I-III- I - II-III- I_ _ \ \ \ \ ° .u
_ I_ II _ _ _IIITII ,III_ - =1 I ITI I I I ~ ,III-III = = VzS=2.7 ft/sec ~ -1 I ~ I I 1=1 I I-1 I I=~ ANTI-FLOATATION DEVICE .,III-ICI- - , ~ a ~ , I ITT-I - \ . '
ANTI-FLOATATION DEVICE ~ ~ _il_-- /r I,,,III_III = _ \ I. ~_I I I-= _ -
" 111,;,111= I = _ Z " _III=III= -
} ANTI-SEEP COLLAR I I=1I I-1I I=1 = ~ ANTI-SEEP COLLAR w - LAR ~ -I ~ ~-1 I I=1 I-
> -1 I 1 =1 11.=1 I 1=1 ~ I RAND OUTLET PIPE SHALL ~ , ~ ~ ~ NOTE: RISER BARREL, SKIMME l i -1 11=1 I I-1 I I- _ RISER & DRAWDOWN DEVICE DETAIL FOR DRY POND
~ 60 LF 18" I R TO THE BEGINNING cn RCP OUTLET PIPE BE INSTALLED PR 0 N1S
~ ®0.67 OF OVERALL SITE GRADING AND SHALL BE
~ UTILIZED AS A SEDIMENT CONTROL DEVICE z WET POND BARREL
~ DURING ROADWAY AND UTILITY CONSTRUCTION. 53 LF 18" "0-RING GASKET" ~ ®1.51% N REFER NOTE: FULLY COATED CMP MAY BE USED
w ONCE SITE HAS BEEN STABILIZED AND GRADING NOTES: 1) FOR BMP#3 WET PO D
? IS COMPLETED THE BASIN SHALL BE CLEANED - AS AN ALTERNATE TO THE RCP TO DETAIL ON SHEETS 2
z OUT AND STABILIZED. THE SKIMMER DEVICE HIS SHEET. RISER BARREL STRUCTURE AND DESIGN DATA T
SHALL BE REMOVED. w
z w 2 CONTRACTOR SHALL VERIFYY LOCATION
> OF ALL UTILITIES PRIOR TO CONSTRUCTION.
R SHALL COORDINATE CONSTRUCTION 3 CONTRACTO
DIMENSIONS ELEV. WNERS. WITH ADJOINING 0
~ NOTE: RISER BARREL SKIMMER AND OUTLET PIPE SHALL w TOP OF DAM WIDTH 10 360.0 ' DIMENSIONS ELEV.
_ BE INSTALLED PRIOR TO THE BEGINNING - ANTI-SEEP COLLAR 60 x 60 N A E NORMAL 4 YI IS PREFABRICATED ADS TYPE YARD INLET.
3 OF OVERALL SITE GRADING AND SHALL B NORMAL POOL 3,785 SF 378.0
~ 1-YEAR STORM ORIFICE 9" CIRCULAR 353.0 UTILIZED AS A SEDIMENT CONTROL DEVICE p g~ a PON POND BOTTOM 1,100 SF 374.0 ~N CARp
TOP OF ANTI-FLOATATION 6'x6'x2' 353.0 DURING ROADWAY AND UTILITY CONSTRUCTION. N TOP OF AM WIDTH 10 FT. 384.0 0• Ssf TOP OFD ~ o . a`~
N RISER 4'x4' BOX 358.75 ONCE SITE HAS BEEN STABILIZED AND GRADING _ TOP OF ANTI SE - LAR 60" x 60" N A APPROVED :4~` ANTI SEEP COL • s
0 18" RCP 353.0 IS COMPLETED THE BASIN SHALL BE CLEANED OUTLET PIPE INVERT IN 1-YEAR - 2" SKIMMER 378.0 CARP ~ s 1 YEAR STORM ORIFICE TOWN OF
" 352.6 OUT AND STABILIZED. THE SKIMMER DEVICE > B~ v°
Q OUTLET PIPE INVERT OUT 18 RCP TOP OF " SHALL BE REMOVED. TOP OF ANTI-FLOATATION 7 x7 x2 374.0 A roved b Date 9 PP Y
c rn~ nr rno nr Atop 4 Y4 Rf'.P R(1X 3R~.0 01,,.,.,1.,,, n~+p Fr _ _.~F
i Vf VI O IVf VI IV..1LfN r.... i f%Aiiiifny sp
-OUTLET OUTLET PIPE INVERT IN 18ff RCP 374.0 Engineering Dote 01.00~ Is%
OUTLET OUTLET PIPE INVERT OUT 18 RCP 373.2011 del
No, Revision Date B
A TOC 1st REVIEW COMMENTS 3/22/04 GAS Sheet No.
= Designer Scale
6 B TOC 2nd REVIEW COMMENTS 4/30/04 GAS ° ° C REPLOTS W&R 1"=30' M 5/27/0 4 GAS 9 D REVISED BMP 3 OUTFALL 6/15/04 JEC Drawn By Date CARRAMORE SUBDIVISION STOP WITHERS R"ENEL STORMWATER MANAGEMENT PLAN. ENGINEERS I PLANNERS I SURVEYORS
cr)
C) E DWQ COMMENTS 10/5 04, GAS GAS 12/1/03 ° Checked B gab No. PHASE 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel,com
F DWO COMMENTS 0 14 0 GAS y
JEC 203116.1 0
0

-4544
,u POSSIBLE
SPOIL AR�
_ --
' 'TO BE \PRC)' �UED
�� 4545 --
�',D I VER >I qN� ;
RtD
-MP
-----------_�--J---
i --
' - - - - - - - �1 ` �i _� /' / / _390-
IF
----
- ,
x4' '-ate iT--71---- -1
--------
I ,
I ,
I ,
I ,
=10
DRIES - I
C f- M E TSI
I I
I I
I I
I 1
I I
I I
I I
I I
I I
I /
I I
I r
I 1
1
iNATER LEVEL DURING STORM
I IG 1�Ir f�/-y1- vlJJir r � vr�
PAD TO Ei ISTNG
DRAINAG�WAY IN THIS
AREA.
CiQ9 108
/
/
GODFREY NORMAN
/
/
/
/
/
''A R
BMP #2 -WET POND
SCALE: 1 40'
RCI' RISER
TRASH H00
_L -- -- - ---
PEAK FLOW ATTENUATION POOL
PERMNNENT
-
I-III-III=1 - POOL
ANTI -FLOATATION DEVICE
ANTI -SEEP COLLAR
145 LF 18"
RCF OUTLET PIPE
@ 1 38%
i
CROSS SECTION
No., Revision Date B
12 5 03 GAS
I _ C PF ✓iEVV COMMEtyTS 3 22 04 GAS
F :V W _ COMMENTS 4/30/04 GAS
'S - 5 27 04 GAS
. VL !PIIS 10/5/04 GAS
TOP OF DAM EL. 388.0
100 YR. EL= 386.63
MINIMUM SLOPE 3
:ARTH DAM
6'x4.5'x9" CLASS A
RIP RAP DISSIPATOR PAD
W/FABRIC LINER
V2,=5.2 ft/sec \
NOTE: RISER BARREL, SKIMMER AND OUTLET PIPE SHALL
BE INSTALLED PRIOR TO THE BEGINNING
OF OVERALL SITE GRADING AND SHALL BE
UTILIZED AS A SEDIMENT CONTROL DEVICE
DURING ROADWAY AND UTILITY CONSTRUCTION.
ONCE SITE HAS BEEN STABILIZED AND GRADING
IS COMPLETED THE BASIN SHALL BE CLEANED
OUT AND STABILIZED. THE SKIMMER DEVICE
SHALL BE CLEANED AND ATTACHED TO THE
RISER BARREL AT THE NORMAL POOL ELEVATION.
Designer
DIMENSIONS
ELEV.
NORMAL POOL
TOP OF DAM WIDTH
4,700 SF
384.0
10 FT
388.0
j ANTI -SEEP COLLAR
60" x 60"
N/A
1- YE_ AR_ STORM ORIFICE
2" SKIMMER
384.0
TOP OF ANTI -FLOATATION
TOP OF RISER
6.5x6.5'x2'
380.0
4x4 BOX
386.5
OUTLET PIPE INVERT IN
OUTLET PIPE INVERT OUT
18" RCP
380.0
18" RCP
378.0
OUTLET PIPE INVERT OUT
24" RCP
No., Revision Date B
12 5 03 GAS
I _ C PF ✓iEVV COMMEtyTS 3 22 04 GAS
F :V W _ COMMENTS 4/30/04 GAS
'S - 5 27 04 GAS
. VL !PIIS 10/5/04 GAS
TOP OF DAM EL. 388.0
100 YR. EL= 386.63
MINIMUM SLOPE 3
:ARTH DAM
6'x4.5'x9" CLASS A
RIP RAP DISSIPATOR PAD
W/FABRIC LINER
V2,=5.2 ft/sec \
NOTE: RISER BARREL, SKIMMER AND OUTLET PIPE SHALL
BE INSTALLED PRIOR TO THE BEGINNING
OF OVERALL SITE GRADING AND SHALL BE
UTILIZED AS A SEDIMENT CONTROL DEVICE
DURING ROADWAY AND UTILITY CONSTRUCTION.
ONCE SITE HAS BEEN STABILIZED AND GRADING
IS COMPLETED THE BASIN SHALL BE CLEANED
OUT AND STABILIZED. THE SKIMMER DEVICE
SHALL BE CLEANED AND ATTACHED TO THE
RISER BARREL AT THE NORMAL POOL ELEVATION.
Designer
Scale
W&R
1 "=40'
Drawn By
Date
GAS
10 FT
__12/1/03
Checked By
lob No.
72" x 72"
203116.1
\ I I X I I • I 1 i 1 �I 1
8 I I It
� V J1-
bx q�� / I 1 M Y L,TA I VI D
I I \\ 1 1
I1
COMBII�AI���JN�IL11L
11
�\ \, � 1' \
I ! ► i I ; %
_FE
1�1'f E \ �c ;R E \1
I + I I I I 1! ! i + r 1\ ,R 0 E TIONI= E N �I NIS
t 1 +I I L I I I I I+ I , r: 1 1
t�1\,
�' � 11' '-' III ,, 1 t I► I \
++
' /,, \ / .' I I I I ! � ,I / 1 I
2 H ' \� 12 1 �7$F//I
I I I I I I ,; 1 ,11 ►; 2�, p \
! ! III / / 1 + \
13 \ // I r+ , I I I II I I / I I\111 I \�
0 STORM1 �� \
ASEMENTr, , i I -7n' II \\tQNE �iONE\ \ \\
Q ; I QNF- / ; t 11 \ \ I \
DAYLI LINE' I I . \
12
'YPPte\ \ - -
,�TICA�� 3\11
\\ �� \\\ --\
11 9'4 It
SF�' \\\ '
If
If It
12 ,109' SF
/ \\\ \ \ \ \
4/%� 0 \ \ INV.=34,5\ \\ X \'\TING\
TOP e(9t = 81 \\ ' I ` � \,/ Q \'\\ PLt
i -A a , I d \ ` \ TOA PIF a' 350, \ \ \
GVT ND-
/ I 1 I I 3 ! L \ I tll 1
1 I I I + 1 S RED R
', IREVE TATE Zq 6 '
IF
ii 6EI T++ -Ir �4=VE
I
p, \ _ i ' 1 + -:` II 11 1 , i I t ND 1 TUILIP
tiff
9 s I +
6" DIP \CTS AS DRAWDOWIFO_,���-
TR E E PROTECTION, 1,STOR AND BOTTOM DRAIN
/ OR PON
FENCING FIGURE 3
9
U
'
P's HALL Irl E �'JSED
M OYER
C U R TI S 0 RL E M A SKI /' FOR ER SION CONTRA -L- -`
DURING �ROJECT.
\A/I r T�
BMP #1 WEST - WET POND
SCALE: 1 " = 40'
RCP RISER -
1' MIN. FREEBOARD
WATER LEVEL DURING STORM
TRASH H00
I I_I I -III=► I I; I
-I I ---- PEAK FLOW ATTENUATION POOL
PERMANENT _-'
' I -III POOL -_'
iTL ;,TI T
QE ANTI -FLOATATION
ADD 4" GATE VALVE
AND BOTTOM DRAIN
TO EXISTING RISER
PERMANENT P OL = 350.0
348.0 -
2-45' 6" BENDS
345.0
CONCRETE
BLOCKING
TOP OF, DAM EL. 356.0
100 YR. EL= 355..2
ANTI -SEEP COLLAR--
120 LF 24" "0 -RING GASKET-"-----"/
RCP OUTLET PPE
0.83-3%
CROSS SECTION @ RISER
LEVEL SPREADER
MINIMUM SLOPE 3 1
:ARTH DAM
8'x6'x9" CLASS A
RIP RAP DISSIPATOR PAD
W/FABRIC LINER
_\6„=4.8 ft/sec
AE
RELOCATE GATE VALVE
TO UPSTREAM SIDE
OF TEE.
6" MJ PLUG
344.0
CONCRETE 6"x6" TEE \6" GV Q
BLOCKING E
CROSS SECTION CQ? DRAWDOWN BLOCKING NCRETE REMOVE TO
PROPOSED PLUG
CARRAMORE SUBDIVISION
PHASE
NOTE: RISER BARREL, SKIMMER AND OUTLET PIPE SHALL
BE INSTALLED PRIOR TO THE BEGINNING
OF OVERALL SITE GRADING AND SHALL BE
UTILIZED AS A SEDIMENT CONTROL DEVICE
DURING ROADWAY AND UTILITY CONSTRUCTION.
ONCE SITE HAS BEEN STABILIZED AND GRADING
IS COMPLETED THE BASIN SHALL BE CLEANED
OUT AND STABILIZED, THE SKIMMER DEVICE
SHALL BE REMOVED.
S
#4 REBAR 12"
1/2" PREFORMED JOINT
FILLER, 12" WIDE
8"
ELEVATION SECTION
2000 PSF MIN.
BEARING CAPACITY SEE BMP SECTION FOR SIZING DATA
BENEATH COLLAR
TYPICAL ANTI -SEEP COLLAR
NTS
NOTE:
SKIMMER MAY VARY
SLIGHTLY FROM
ILLUSTRATION
OUTLET END; CONNECTION
TO OUTLET PIPE OR RISER
BMP 12 - WET POND
Skimmer to Use: 2" Skimmer w/ 2" heod
Volume to be Oroined = 3,485 cu. ft.
Draw Down Time = 2 days
Orifice Area = 1.55 sq. in.
Orifice Diometer = 1.4 inches
Qout = 0.02 cfs
CONSERVATION POOL
NORMAL POOL
'O-RING' JOINT
�.......,-„ . rr..,.. �..... 4..x4" TEE
4" DIP
4" NRS GATE VALVE -�
SKIMMER ATTACH TEMPORARY 4"x4" TEE
FOR EROSION CONTROL
PHASE OF PROJECT FOR
BMP #1 WEST AND BMP 1812
NOTE:
4" BOTTOM DRAIN WITH
GATE VALVE REQUIRED FOR
BMP #1 WEST RISER.
DRAW DOWN ASSEMBLY NOT REQUIRED.
TORMWATER MANAGEMENT PLAN
VENT
SCREEN ACCESSIBLE THROUGH
DOOR
FLOAT
BARREL PIPE LONGER THAN
SHOWN
NOT INCLUDED WITH SKIMMER
SUPPLIED BY USER
-FLEXIBLE JOINT
BMP SKIMMER DETAIL
NTS
BMP /I WEST - WET POND (FOR EROSION CONTROL ONLY)
Skimmer to Use: 4" Skimmer w/ 3.3" head
Volume to be Droined = 73,920 cu. ft.
Draw Down Time = 7 days
Orifice Areo = 7.26 sq. in.
Orifice Diameter = 3.0 inches
QOut = 0.13 cfs
RISER & DRAWDOWN DEVICE DETAIL
NTS
4'x4' PRECAST
RCP BOX
1/4'x 2' STEEL STRAP w/
2 - 3/4" ANCHOR BOLTS
2 STRAPS REWD
NOTE:
-PLACE STEM SUPPORTS
AT 3' FROM BASE
GROUT EACH SIDE
TOTE: FULLY COATED CMP MAY BE USE
AS AN ALTERNATE TO THE RCP
RISER/BARREL STRUCTURE
APPROVED
TOWN OF CARY
Approved by Date
Planning Date
Engineering Date
WITHERS RAVEN EL
ENGINEERS 1 PLANNERS I SURVEYORS
111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
E.
yq
Sheet No.
S2
DIMENSIONS
ELEV.
NORMAL POOL
8,830 SF
350.0
TOP OF DAM WIDTH
10 FT
356.0
ANTI -SEEP COLLAR
72" x 72"
N A
PEAK ATTENUATION ORIFICE
(2)-24"x6" RECTANGLE
354.0
TOP OF ANTI -FLOATATION
7.5'x7.5x2'
353.0
TOP OF RISER
4'x4' BOX
355.1
OUTLET PIPE INVERT IN
24" RCP
346.0
OUTLET PIPE INVERT OUT
24" RCP
345.0
CARRAMORE SUBDIVISION
PHASE
NOTE: RISER BARREL, SKIMMER AND OUTLET PIPE SHALL
BE INSTALLED PRIOR TO THE BEGINNING
OF OVERALL SITE GRADING AND SHALL BE
UTILIZED AS A SEDIMENT CONTROL DEVICE
DURING ROADWAY AND UTILITY CONSTRUCTION.
ONCE SITE HAS BEEN STABILIZED AND GRADING
IS COMPLETED THE BASIN SHALL BE CLEANED
OUT AND STABILIZED, THE SKIMMER DEVICE
SHALL BE REMOVED.
S
#4 REBAR 12"
1/2" PREFORMED JOINT
FILLER, 12" WIDE
8"
ELEVATION SECTION
2000 PSF MIN.
BEARING CAPACITY SEE BMP SECTION FOR SIZING DATA
BENEATH COLLAR
TYPICAL ANTI -SEEP COLLAR
NTS
NOTE:
SKIMMER MAY VARY
SLIGHTLY FROM
ILLUSTRATION
OUTLET END; CONNECTION
TO OUTLET PIPE OR RISER
BMP 12 - WET POND
Skimmer to Use: 2" Skimmer w/ 2" heod
Volume to be Oroined = 3,485 cu. ft.
Draw Down Time = 2 days
Orifice Area = 1.55 sq. in.
Orifice Diometer = 1.4 inches
Qout = 0.02 cfs
CONSERVATION POOL
NORMAL POOL
'O-RING' JOINT
�.......,-„ . rr..,.. �..... 4..x4" TEE
4" DIP
4" NRS GATE VALVE -�
SKIMMER ATTACH TEMPORARY 4"x4" TEE
FOR EROSION CONTROL
PHASE OF PROJECT FOR
BMP #1 WEST AND BMP 1812
NOTE:
4" BOTTOM DRAIN WITH
GATE VALVE REQUIRED FOR
BMP #1 WEST RISER.
DRAW DOWN ASSEMBLY NOT REQUIRED.
TORMWATER MANAGEMENT PLAN
VENT
SCREEN ACCESSIBLE THROUGH
DOOR
FLOAT
BARREL PIPE LONGER THAN
SHOWN
NOT INCLUDED WITH SKIMMER
SUPPLIED BY USER
-FLEXIBLE JOINT
BMP SKIMMER DETAIL
NTS
BMP /I WEST - WET POND (FOR EROSION CONTROL ONLY)
Skimmer to Use: 4" Skimmer w/ 3.3" head
Volume to be Droined = 73,920 cu. ft.
Draw Down Time = 7 days
Orifice Areo = 7.26 sq. in.
Orifice Diameter = 3.0 inches
QOut = 0.13 cfs
RISER & DRAWDOWN DEVICE DETAIL
NTS
4'x4' PRECAST
RCP BOX
1/4'x 2' STEEL STRAP w/
2 - 3/4" ANCHOR BOLTS
2 STRAPS REWD
NOTE:
-PLACE STEM SUPPORTS
AT 3' FROM BASE
GROUT EACH SIDE
TOTE: FULLY COATED CMP MAY BE USE
AS AN ALTERNATE TO THE RCP
RISER/BARREL STRUCTURE
APPROVED
TOWN OF CARY
Approved by Date
Planning Date
Engineering Date
WITHERS RAVEN EL
ENGINEERS 1 PLANNERS I SURVEYORS
111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
E.
yq
Sheet No.
S2

_ _ _ _ 1
NOTES: MENT WI H P ESTON VILLAGE &
J,\ i ~ 1. PER PDD APPROVAL AND AGREE
t'/ II , .FARM HOMEOWNERS, ALL FOUR PON RIGSBEE PLAN BY HE ASSOCIATED
f' O~ \ CONSTRUCTED AS SHOWN ON THIS
~..a. I / I ~ = w T I. 1 AND S2. DETAILS ON SHEETS S
- ~ ` I' it r _L ~~~r PORTION
I BE USED FOR EROS ON C NTROL 2. ALL PONDS SHALL
HEN BE CO VERT D TO FINAL USE ' OF PROJECT AND SHALL T
r ~r _ . ' TOWN OF CARY ALLO S FOR REMOVAL AS BMP S ONCE THE
'~I ~ , A INS OF THE EROSION CONTROL B S
I ~I;/, ~ ''I ;5~~ ill r~~ Jf ,,Hf.,~~N _ l ~ , , " , ,.I l ~ LOTS 61 69 ~ ' LOTS 3 - 1,3
DEti~> EiliD ROAD ~,,+~'„'r~;, ~ i RECORDED IN _ ~ ~ - r~! ~ LOTS 59 60 ~-.'~~.;,'_"~',;r~:~' RECORDED IN
X60 FU~,._iC f'~W) ~ BM 1994 RECORDED IN <~~_~a~r% ,la(, I BM 1994 ~ I 4 1 PAGE 125
PAGE 707 I I't~~!ir', I ~ ~ BM 1994 ',~_I ~'If~~ I ~I ~ I,
i I vI I I ~ I ; y~y! ,I I t PAGE 837 1 ~~9 ~ 1 ~I I. , r1r , OVERSIZEDI 1' I
I I I I I 1 1 / I li''Y l r I 13 I I I , I I i I I \1 j ~ _ 1 ~ /,v, 1 , ' \ \'I I""' JUNCTION OX I ' ' - ~ I 1 1 I ii
I I I I I , I I I I , \ / fl] S~J II Jc~ r I I I I I 4iJ r~ BLUM I I I I I I ~ r ,r I _ / GRATEQ I I 1 1 I ~ 1 I I j NLET ~ ~ II 11 f` vv i
I I I I I I I I I I ~ 1 , .,"J'_y., ~ fir I I I I II I ~ I I I 11 ; „ _ ~ 0,,, EX~~T YI YI I I 1 1
I I I I ~ I I I I , ; ~ ~ ; , , I I I I I I I I 59 r~-~_., ~ ,,~~IM=365,30 I i I r I I I I I I O ~ AA d r' r ~ 10 I ~ S89'34'45 "E ~ 'I 'I O ~ 1 / 365,30 ~ II ~ I II 1
I I I I I I I I I I I \ ~ ~ V] I~ ~ I~I~. I I ~ ~ - ~ ~ -.I INV. OUT=358.60, i I I 1 I I I I 1 I I I l; I I I OUT=358,60; (24 RCP) ~ r HALE 1 1566.20 11 vv
I i I I I II I ~ ~ j II 1 !II ~ _______r~r ~ I I I I I I I I I I 60 1 ; = , l i I I I I I I I O 1 ~ )r~ 1 I I \1~ \ I ~ i i 11 i +OSI I I I I I I I , t 3 i
I _ 2 I I r I I I I I I I \ ~ ,l' , O I 1 I I I I I I I I I I 1 , ~ ~ 1 I I I 65 I 63 62 I I, ~ - ANICETTI I 12 I 1 I I I 1 1 5 O ~ I I 7 I 4 \ I 11 I 8 6 O O O 9 O O , I 0 I ,,Io. , ~ 1 1 \
64 00 61 , I I 69 I I O I O i~,, , - _ I 66 I O I I I O ~ ~ - I ~ETTI AMBLE \ , ; ;I~~ 1 T,
I I I I 67 I I I I I I r / r, I r 00 I I , I I I I I I I I , I ;REPAIR FENCE - ,1 I I 1 Ir vv , . I I I I I I ~ I I I 1 r v ii
11.2 L 1 ~ I I _ ~S 9' 08_38 "E r I I I ~ ~ / ; I .I. rte/ .l I AND BRICK - ~1 I S89'0~'S4"E I 1 _ _ ~ _ _ '
1233,96' t ,r., i , . - _ / 1 ~ - T - FA~T.~- ~ I `v ' LAROSCAdE E~SEME ? ~ ; ~ i I I 7" _ ,-__--r I .1` j li , v ' ! i ~`v v ~P I Av 1 / I I I I 1 / i v V I
rrr i I r l ~ r ~ "^r'r r~ , ~ ~ I i 'l i __a, r ' ~ - ~ - - / / r r l 'i , 1 v.'' / I , ,'r _ \ r . LV I Y V I i A I` 1 ~ J I I? I ~i I I' ' ~ / i i
r I / i I ~ _ _ _ _ _ - - II 1 `1 \ I I I I \ I I 1. I I I I I rr 'r / ~ I I I
~ I ~~..I ~lr r , l / / I i i ~I. I, ? ~ .I 1 I 1 I I I ~ 1 I I I \ ~ \1 ~ I ~ ~I 1 I I 1' ~ / I ~ .I r. ~VI j ? 1 I 1.1 , ~ I ~ I I i ! 1 A .1 1, 11 1 I / I
J ~c~A, I'' 'i ~I , ~ I r• ~ ~ / / _ ' ~ I r ,.I , I~ 1 ,1 ~ 1 , , I I 1 I I `I \ l VI ~ I , ' li 1 1 '1 1 1 I I l i I 1 V V I '1 A I _ A 1 , I I .i I ~v Jf 'rr " I i 1 I 1 1 ~ . I i- I I I l i r . - i n
4. a~. ~ 5 y. ~ ~ . ~ 4-r A _ CC. ~ / r 1 ~ - - I, I ` ~ it r I / l~ ~J i`, I ; I I v v\ ~ , , , i I ; i ! r / 1 ~ i i 1 1v ~ 'v , i gp PONm 3M. i r i+ v ! I I I ~ i i I r' ~ I } I / 1 r 'I / i \ v v i i vv ifv i 'v v I l i rl ; i t i i t , ~ I i I i , I
~ i-'~ EXISTING ~ v„~,~'' r;~1~ . ~ ~ r .r , , / y ~ y ~ ~II, I~,I r~ I / ~ /i _AKE ~ ~ , 1 ~ _a I r ; I I r I ~ ~L v v v vv RI ~ ~r eN v I i v I I I i 1 i I I, f ~ ~ ~ I ~ i ~ 1 r ii B R~l ~ lF ~x_` v i~ i 1 Iv ~ i ~I i I 1 i r i `1 i f~ ~ ~ ~ I hl v v O~ I v I i i 1 I 11 nl /1 ~ i V~ V A, 1, i I I, I jl I ~ , i l] V i I , f p 1 I , I i I/ I.
4 / ~ r 11 'r'l' - - - -.~IIIr Itil; i ,I 1 4 / 5 ' /.I 1 I -11 1 rl~ i ~ _ I~ I I/ ~ I '_.i L~-._~ 4. y / 4 44. y,y ~ 4'~ I /,1 ~ 1 -I, _ I~ I r. ~ 1 1 I \ ` \ i f ~ I I I I I i 1 1 11 11 \ ~~/(1 1 l , i i I 1 / II j l ' I ' ' I, \ I 1 _,l f LI_._._._._._~_ _._._._,.~.J ~_..LJCa.~~({, 1,r 1 1 1 r 1 I I; ~ f \ ~ _ I I 1 V - - I r I ~ / ~ I 1 III
i pc i, ~r rrr i ; r~~. ~ ~ r~,rt-' / v. 1 ~ 2~SroRr , ,
v Mli ~ v v, I II FRAME ~ I I I ~ I ` ` l v H SE ~ I I I I
lO ( / ~ ~ ~ / - 1 1 A I ' 1 ` I ` f I I ~ I ;
~ ~ ~ ~ ~ d'l ~./.~~r, , ~ A r I -I \ \ \ ~ 1\ I I I I 1 I ~ I I I. / 1 1 I 1 I I i, \ I 11 i
~ i~ ,1 t m 1 r 1 I - , 1 _ 0 \ Ff' I II 1 1 1 I 1 ~ I`~\ I %I II f f ,r / I 1 \ 1 1 it
r I II/ I / I I ~ ~ 1 / A V 1 1 1 1 I r I N I I I t 1 I I ''I I 1 1, / \ I 1 , BARN ; . ; .1i, i 1 v I 1 ,1
~ v t ' ' ~ ' r . ~r r l r r / ' ~ r I ~ , ~ _ t ~ .,,r , / k _ I, I r r'.
r v. `l) j 4, y 4 y y ~ (~l i r rr l i r~ f i ' ~ ~ i,r i/. ~ ~ I 4 /r, ~ i r r r ~ l / ~ ' - r-'- ''i .i i r~l I{ i~ r 'v IA i ' I',~ I ~N i I I i r i 'I , f ~ V v ~ ~ ~ II i,~ I:~ ~ i~ i t i SILOH i i $ I ' 1 1 ~ ` ~ ANN. ~ r '
4' ~ 4 ~ / r r r , i l , / I r ~ ~ r _ i, ' i, ' ~ r / G~/i~' r r l r r , r; a' I r I I r I 'y rr r~ r'I I r r/ .~.rr r ti. r' " i I~ 1 I .sir 1 - _ _ _._,t~_. _._.r _ _ \ - I / I II
r ~ , I I' I I /(,1, 4 / I / rrr /r l r r'/ ' l ! '-r-~----. ~k, 1 ~ y r r/!I/ 'lrr / r~ l' i' r i/ i I i t _ r r r/ r r r r ~ i r % i r i 'r i j 1 Ir j BA it , C._. 21B' \ 1 ~/~fV V. i, l ~ l _ _ _ ._.J. _.L I' i
_ / j II I U 1 I / l IY, I I' II 1 1 I 1 / / ! T. - t 1' i i , _I III I - 1 J^' I * \ I I . I
/ q y G 4 ~y. r{{ ~ , r l r l l ~~-.._.i, , _.~'J i _ J( i AI- I I 4' . ~r I l r r r l/ l r Cr 1._, ~ i i i , , r / ~ h._ _._I_._.1._,_ ~ i SHED / ~ I r l9 r i 1 r I I/ I r r I I I ~ ~ . \ f - a a-------------'" ~ \
r'r 1 1 I I / I I i ~ I I~r r~ / . ~ ~ 1 ~ I I I I i ; ~ V ~ b. - /~I_{I I I I I I I I i I I / I I L, J._.--- r I L, ~ , 'L.L, I r i ~
V`r ~ ~4 $ I~ J t I I , r r rl I /I r I I I I I I, I ~ j / ~ I I r I I r l I I r I _ / 4 r~ l t l l r r I l r i I I I i I I I I ~q~s r ~ HOUSE 4 f III I/ r I i ~ I I ~~~-I r
'VC~ ~ S' r - I I I I I r/ / I i ~ I I I I ~ I I I I ~ ~ 1, I ,?~,,I I I I I I , I ~ 5_<r 'y I ~ u llh t Ir I I ~ I I I I I
~ r c' q/ I~ I u III I I I I L,_~_.l~- I ~ C~ ~ r / ` I~ II t I I I I ~I 11 i ~ I I I I -~'"~~I I ~ r ~ F ~ r \ r n r , - v ~ v ~ ~ / .I
/ 4. 4i ~ 44 III Y r I I/ I ~ j l I II,... ~~~'I , I I
U ~ v r~/i r~ ICI ~ i I I r r l ' l m I` r ! J~
/ ~ I I l i! i r' l rte- r h.J r ~ f _ ,
~ y r t _ ~ l ~ _ , / i / , / r ' I~ f t , ~ ~ i , , I i r' - _ _ I f/ / J/ I 1 I I t___ .~i~ I I r _ I l l J ~ V I I r l'/ I r=' i i / 1 ! I'\ I ~ fir' 1 - y~ r I f r 0~/' I ~I ~ i I r v i r~ 1 I ~ r f ~ ~ r ~ , - 1
~ ~ ~ rrr j~. r r 1/ la-r ~ I r i I i ~r i I ~I i l l r 6 f , I I I r l~ ! ! , I _ ____________A Jam/ I \ I I f , 1 /v , I ; 1 ~ ~J I I , , I ; , I `
~ ~ HOUSE I y~~/ r r~~ l ~L_ ~ ~.r i i t i, II I ~ I i t I I i 1 I , I N 61 / ~ i rr, ~ / ; r r. it I I i ~ 1 ~ r ~ i, I r, r, r I `I r 'i r I 1 , , y - , , I
t- ~CO / i 4 q y/,~.r ~ ~ ~ J I r i'~' I~ I' i i l ' I , / , r NNIS ~ l ~c- , , ~ I \ i ~ , L / ~ ~ 0 ~ 1
(.rl ~ E ~ / / ~ y ~ r ~?'i ,i , I I r. V ~ I ~ I l ~ I r i r I ~ I (71 CGURT ~ r'~ _ r 1. ~ I 1 - I ~ ~ r~
l9 ' 4 ( r ' r, , r ~ / <..,,~r'~, I I A I _.J i I I I I ~ / I / / ~ y~'/ ~ r/ r~r~/ - ~J , r , I l'~r 'W•~I 1. ~ 1~T"' - , K G
\ 1~ 11 T ~ ri \.+~1\T\.~~\ 1 **i r ~ '11 I 1 I 1 y 1 -`i ~ ~ P d ( ~ _ - ' A I -r ~ ? 111 ~ i
, I 1 1 1 f `V~~~~ - - I I I - - it
vl ~ \ 1 1 1 , , 1 I, A 1
I 1 1 5 I 1 _ 1 \ \~V \I \ ~ I •t. i"i~'~ ' ~I ' .f r 1 i ' I
_I II 11 \ 1~ III •_.i._._I_._ Y~ ~ \ 1~. _ "r iy\ -~I ~ ~ 1i I r i I 1 I 1 ~ IV j ~ II \ ' r.l ~ ` AAA , c. 1, ` _ ` ` n - 34 .i r i i A \ , ~ 'p-, -P.,.~l 1 I I 1 , , I ~T 'L.~ . Y+-- \0 __II ' ; ~,2~I ; I , I' I 'li 1 , ~
i i 1. r ~ f 1_ c`.m~r ' I I it 1 I •I~ I 1 I - T'~ i\ 1 1 .I 1 1 i I \ 1 ~ I I I 1 I'~'~~ _ ~,i-----', T'~ 1 n ~ ~I I\ I ' \ 1 1 T'~,~~ I 1 i 1 11 1 1 1 '1 1 1I \1 ` I I IIt'1 ~ I ~JIL ~ _ ~r , "'~~._'~~._._.I ~ I i ~ 11 1 t I I ' I 1 11 1 1 1 t, 1 1 I I I 7-~^. 1 _ r. 1~ 1 I 1 lL._ _.L - \ I
_ /rr T fi'. r _ / 1 el I i'_ I 1 1 I 1 ~ 1 1 1 1 1 1 I I II - ~ it - 1 I -._L. ._.SJ V I I I 1 1 1 1 A t 1 A .mot' I A 1 -._y,_. 1 TM~~.a I V I ` 11 1 I 1 AI , . A r'r 1 I
,r J / ~.~~sr //'~'•~~~~[:'i~ l1' , 1, ~ rre._..l - I,. / \r I 1 1 1 1~ r , ~ ~.~c--'-~'- it ~ r!, i 5 i i I I I I 1 1 1 1 \ ifl 1; 1 1 1 , t I\ j``\ `,\.v~ ~6(i~ W II 1 i , 1 1 1 i I t 1 , \ 1 _ . \
~ i' :kill i,l _ _ ~ _ _ _ ,'fir 'I ---_._I_~_.1._.._._.~J "'-I ~ I v v _ v ~ K v'~~' vw li 1 1 '1 v 2. 11 1 i v~. .v v ~.A /I , , .r ,I ~ d 1.
] N r / I I IoU.JE - _ I I may. 1 1 1 11 v `v vv v t ~ 1 ~ ` `I v v v{ v~ A~,_._~,_ w ai ~ A ~ 1 I ~ v 1 1 ~ II \ \ • 1
1 l / _r - il)>`~ ;'ra \~'Y' .yam r ~ _ y t ~ \ ~i
f~ , \ \ ` \ i \ ~L\ ` \j ( Iflll. \ Il A hl rl \ \_7°1' i ~1 \ \ \ kill / \ 7 '-)'1'_. II I 1? `I \I 1 A ~ ~1 AA\' ~ I I'.,-~ ~ I l 1 l~V 1 1 I '
1 / "T / III' 'C '1 `Z' 1\l1\~ , 4~' '(L ~1' I 1 1 I , \ \ ~ rl ! r A ~ 4 RUr. 1_ _ ~ ~I~II ,j' ~ _1~ I 1 I I 1 ' I 'V 1, 1 1 1 r a r' V v ~ v 1 v I~, v A V ~I 1~ v \ .v ~ I Q I I I \ i ~I I ~l 1 1 A r~V : A'.. 1 L v A -VA . A ~ I AV A A /I A 1 t A 1~ 1 / i 11 I \ 1 1 1 1 1 1 1 \ f i 1 r \ ..~-.-.p l(~ 1 \ V ~ \ ~ I I h \ 1\ 1 1 1 1
I I \ _J / nrl ` 1 ~ ` s' _ 1 i i i 1 I i t I 1 i I ~ ~ .I t'I _-'-./s ~ _ I. ~ ` i .1'' r cY I ~ i 1 -.T. I \ 1 1 I I 1 1 I I 1 1 ~V I A V>~ \ V ~ I~"`I :5,y / V I 1 I 11 r i III L_._I___~_._.,_!~ 1 , ,Yv/1/~ I I V li , ~ ~v _ ~vv v \ 1 I I I r v ~ li T 1 I I I 1 V /I I I II 1 I '1 `I C~.~ ~~'V''wV v v y~~( i~ 1 I I I W ~ II
1 I .r~ I ~ ~t-'~ - r I I r l I r / I I `1 ~ 1 ` I \ 't' r 1~'\II( 1.,' I I~ / / 1 I 1 Ir":_._._/_. _.j._._r"'P . 1 ! I d li I I i 4 Ii, 1 1 1~ v v v v v)-''v ~ _ ~f,~ 1 I FF 11i _r'-'T1 1 1 1 I f I I 1 1 1 1 1 A ''1 \ v 'V A A` . ~ - 1 1 1 1 I 1 / I it I ~ I I. I i 1 t \ r \ i? ~ \ `\l~ r-la I I ' I
' 1 ~ ' ' I ' 1 1.Y' ' ~ / I ! I ! I 1/ 11 1 11 1 I li I I 1 lV \ I I i lip I I I 1 ~I 1 1 Y v?Iv Ai A ~A A I ~ ~ ~'ii' I c._~f._7.7 _L ._y ~ / I I 1 !l { I I I !I i I I I 1 1 ICI 1 1 11 ~ 1 \ 1 1 1 11 ~ ~ j\ / \Y._ A\ \ I 1 I 1 / f r I i ~ it 1 I I ~ I~ I 1 1 lir JJ , Y1 1 1 1 1 Q 1. '/r I.1 I 1 1 ~ '
I r r 1~ \ `a~~ _ ' ~ ~ l l I II 1 I I 1 ' 111 r 1 ~ I' 1 _ ~ ~ I lir' l I l~. I I I it r ~ rl I / I I~ I I 1, 11 1 1 `1\ 1 1 1 \ / / I 1 I I ~''I l ! , I ' •1 ~I ~ f I I 1 I i\ \ \ 1 1 \ 'll I ~1 ~ i ` V I 1 1 \ I' \ 1 I I f 1 1 1 r 1 I ` I I I '1 I I I 1 1 \ 1 1 I , r i f I i t I r , I f it i I v I i' I I I~' ~'0vv v~`1 - v I v 4' v~ I I
1 \ I I ~ 11 i'l ly/r r__ > A 1 , `~Y. I I / I I I V ~ I I ~ p rl it ~ D• , ,Y. ~ Yd I~ ~ N r r II II ' / r~__,a ! r' I r ~ r I I TIE LINE \ I I I ~r fplr e.'%. - /r .yr~ r 'f ~ 1 1 Y ~'R , t LC__ __.__!_.J I l r I ri r I ~J h v v 1 ° ! I I ! , i,_._,L._.1._.-.I-- -.1,_.T __i_._.,~( ,l._.!._.J( I I I Iv AI VA 1! ~~~_-`I I A I 1 A a~'\F` r I I 111111 _.C ~._.J I I 1 / I , I I , r ~ I~ 11 I I ~ '.I I A ~ ~ - I 1 1 ~ I .V 1\ , I~ ~i
, ~ ~ ~ it I ~ r ~ ~ r `\V ~1r ~ l `~i r~i Y 1 1 rrr i' -`.S EI' / N 1°39 39"E II 1 - ; r I 1 ~ I r,' r% 1 i 4 ~ / Y' /r i~/ r ilrl ~l, ~ ,r , I r I r , I I I , I I \\,\I I 2b I h. Iiy• I I \ I\, I \y .1 \ \ \ I ~ _ ~.f.~ 'y ri I r I I , I VI I \ I\ I I !i' / EO'/ / 1 ~ 10~ I I r f~ , I/ I i I I ~'\I ~ 1 1 1 l? \ I 1 1,` ~.i'I ~ _ `\i
, r 1\ If' r r, v :r r r r ~r` i /r I i., , 60.17 ~ 1 ,I I r - r r I y - ' ' I ~ r. ~ ar ~ r I ~ 01/ 1 r~r I~I r , \ I, r l~ , i ~ ~r r i, i i 'I n ' / r y _._.J~ r .t. J. _._y.._ .>•._.I t. /1. / I I I '~1 1 t. I II I ~ i, >r a ~ r IY"7 I ~I rl , Ir 1 ~1~ ('i r l 1 / ''~0~ ``.A 7 I L~ I I 111 ~ 1 1 N'~~ 1 j i
I ~r 1, , , ~ , ~ ~'I~~ r ~ r i, i,~ USE I .I / /i , i 1 Y / , , J I , I 1 , ~ )I I,/ \ Y V..7 .VA , f / ~ , I ~v. ~ , I ' i' i d ~ ~ f I i, r 1 ri ~f v I'` . r 1 I I I I 1 ~ r r .~b1 t,'I \ ~ .n r v i,' ~ /i rl ~ i ' it i ! i ' i , , 1 %1 28 , ~~1 II/ 1 I I I v'~, I `o n ; I ' v ,'1 1 v ~ .v v -
!fi: ~ I v'r .~~^.r' > ~l 1 V~" i l~;i i ,d ,i I ~ ~ I H' I I ~ ~ ; ~ ~ r'~ r ~ l Z? r i . i, i ~ ! r / i / ~?;i rte; I_ .i / I i r v 7 r i t ir' l / { I I I 1) I ~.II I Il 1 b, yt 1 r, ' /I i j/ / { /i Ir / f,~ 1 ~1 I II III iYr \ 1111 I \ 1' 1 f \ ,al. 23 ~ 24 ~ ,i :f `23 ri ((:i; ~6 ,I yyi Z7 "'1 / r' ' ~e I I I p I I , I ~ ~ 1 18 1 v .1~ t
'I I_j i ' I I,I / I A'1/ r I ITi '1 N. 11 i~ I i\± 1 1 1 1 II I ` 4 I I 1 1 \I l 1, \ 1 ~ 7 , , / ~ / l 1 r rr I ! r ' I III I ~ 1~v A ~ I ~ 1 l y '1 1 v: v , 1. A' I I I I,r 1 / I~ 1 I/ /'I 1 1 I I I 1 '
/ I! ~ / r ~ l ~ r ! i ~ ~~~w~ I rl ! i. I i N iDl r r / 'v \ 5 ` ~`O V I i~ r it i r 1 I r r rl X '1 r' I, I II ~ 1 I I I f ~ v T 1 1 1 1 11 I I vi''v ,1 J I/ / ~ ~ 1 ll / I 1 'I~ I I ~1 11 I I I 1 111 1 , \ 1 1 1 I -d d I .i\ 1 Y i n I/ , ,I 'i ~ 'i i i ~ ~i'i~ I I;' I III I 11 i ~I 1 11 it i 1 1 ~1v ~ I 1~ ~ 'v J
o I ~ r I i \ \ i i J'" 'i ,i ~ , i; i, Ai,' ~ y I .I I III, I I I rl 1 1 ~ III I~ I 11 11 II j1 I.;'v ,~;1~" ~ - i I' y I%I I~ J I ~ v I --:--i, L--~-- ~ 1 ~.:~.,~r~-,r ~l !1 L, --'f~' ~ i I I L@ I I ~ I I ~ I I 11 IA 1 I 11 1 a' I ~ _ _f._..._.~:_, / , llr I I' 41 1 1~ , 111 II III I 1 v ~V' ~ v ~ !1
_ r ~ ~ ~ ~ i ~ tCA ~ f / I ~ I I i i i III I ~ 1 v vI `fit . ,:1 ~ 'vv ) , 1_ - - r - -A ~ 1 / , II ~ 1 I \ ~ v~ v v
10+•00 ~ r ~ ~ I ~1r t I I l i / l - - \ ' ~ - - ~ ~ ' I , I r / r ) G'r I 'i~r Ilii i~l~I i .ill v 5 v (1 v ` /vv~ i _ ~ I
_ rl a 1 i CB/82 r r , r, r i ~ ' } r ~ ~ ~ ,i ~ P ~ ~ ~ ~ ) I r ~ ' ~ , r , - 2e. ' \ i / I I I I III ~ql~-r I VIII v~ I v I~ v a~ v v A ~ ,;1 I I I 11 I I I Itl \ \1 \1 1 \ M1\ `-1 I i' r 1 ~ 1 III I In ~ 1. `_~~v 1 G v nf, J. ~ i r I
~ I - - - ~ r _ _ - A r. , - I l I I 11 1 l 1 1 'Y. i I r j~ f(pp ~ f ( III ~,1 v~ `~.A _ v v v ~ A v~ ~ ~ r l l 1 ~ i 'IL A/ l I 11 ll 11~ ~ ~ I V A V A ~ ~ ~ 1 r "i / I~ 4 ~I Al 11 V `I 1 1 V 1 A\~ ~ I N-.~ W.~~ WG 11 fl IC I If H ~ -1~~1 1\ \ ~ 1 `I I _ _ ~l
1 11W 111 r t I I 11 11 / r I 1, i t / I I ' I ~ , i I~ ~ ~ I r ~ ~ ~ IV~FVJy_r _ i , . r \ I f ~ '1 ~ "T' i / .I"_. / 1 J'~"L~ `I, /r 1 1 I \ I I \ ~ ~ I \ 1 1 ? 7r~ ' r f• ~ 1 I \I 1 1 \ 1 L~ ~I I , rl 'I , A' i,~ ~ 1 , I _ ~1 , I 1 , 1 1 \ ~RA1 . E~~AR
N F ~v' ~ , ,I v a ,~I - - ; 'i i; Ir y r it Ir 'i ,~i ~ it ~ / _ _ , I 1 I - I \ 1 11 f r~ A 1 1 ~ 11\_1\~ \ ,1 \ IV. "'I I. i I I ' Y r~ ~ ~ T' i ~ i,'~ / IA~ - f. I I 1 I 1 v l~' ~ ' i,~' , , I ,1 I - 11~, v , ,11 1 ~bRY`~ ~ ENTI~
i , , 1-~- r ) WILLIAM B. UPCHURCH ° ~ ~ ~ - - r ` ' r i 1 I / / I/ I r ~ _ I - r --r -a--------~" t , I r i , i 1 I' 's' _r- r~ -r / , I , /I r I , ' 1 , I , I, Y „ , , rr. 11 ~ V1 I I , , ~ ! 1 ~ I, ' ~ ! 'I ~ _ I 111 AI , , `V'11 , ~ - i• 1 Ir J~`~~,',i 1 BvA / , I I Y v$o ~v~V`A~1 v ._.I 'ol ~I y~ ~i, i r i'i ~ ~ , / , ~ K v ,1vv~ f
DEED BOOK 1035, PAGE 1 3 ' _ I I I I r 1 ~ t __h t 1 BM 1942, PAGE 1 ~i/` / r' ~ , , , _ " .'10 1 ~ ' ' ,r 16 'r ~ ' / '~i. , • - _ ' w , ~ f ~ ~ v v ` 1 v 1 ~ I ' i ¢ 1 I bir ' i bl ~i/ I ,'I :1 / ~ , Mr-0Ara \C~, 1 1 'Ir.J
1 1 I I I I l it I I 1 7\ I I ` ~T` i~1 I ~"I ,f ~ I PINS 0744.03-14-8765 r r' „ ; i ; ' ~ ; r _ - _;_r I - - - ' , r ' , i, ,r °D'!~ i,=,i:' '~~i jr' i i f" 14" 1 f r , ,a rv:~v vv v i f ~ ~.n_- I I ,aril r~ 1, v 1 1 I r I .r' ~,4 ' i' I, i r I I, ¢P, _ '1 ~ 1 ~I v v~,.-, pl II i_ it r~, .'i 1 r +I~~ 'I - i ~ I ~ v _ ~ - _ ~f
J r r / I , I r ,I ~ I r `d l ----r" ~ .i- i ~ ,i I, ZONED: R-30 l r . ; ~ i I I i.~ r ~ r ~ ~ - _ - - - ___,-f;--~ ; ~ ~ ~ I I yl 11 r r. I i I ~ - _ r ~rrrfiio i.J-Y'-- / I,i~'- ;'i,~,j /J r "I ~ ,i , 6 I, i i~ ~rl rill ~ '~1 1 A 11 ~I --111 I 1 - I 'v -'i ~ 'I .Y i ri it Iv ~'1 1 IA I 1 I v`v~- I 1 I C i.a' 'i ~i__a',` , }-I ,i , = I 1 v , 1 I'I I,v1 11 vI
I _ ~ ~ r I I _ i' ~ I r r / a-~ 1~ -7 ~~T- i ~ ,f i' 1- C ~i I r r 1 lI III~1 _ v ~v ~ ' G, ~ K 1 I 1 1,,11 -
'r I ~ ~ N 88'49 4 t~ I ' - _ - - / ' ~ r r - ~ 2C ~~-EASE#IEMT ° r - _ r I ~9~ ~ ~ 20d p 1 1 1 I 1 I I i~ II "If I v ' - q .
~ , , I II 9 6 I ~ I 1, , ~ ~i I V - c~ r' .~7, ~ ~ ~ I ~ ~A EASEMEr 11 I I /t P - ' TT_-
~ I I I _ I ~ r DIVE ~ 1 ~ ~ 1 ~ 1'.43 I Y ~r,~,l, I,"1,; , ---_x====-- - I R ION DITCH BE 1 I r I'\~ 1 1 I DIVE S / I I
i 113 I - ~ ~ - > I 115 I , , / , _ TO [ r I I I 112 111 / --I --;,r RMWATER 1' I ~ 17 TO DIRE 1 I ~1 5 r ~ a~ 14 I I O f 2 20 1 19 I 18 , ~I J I 13 I
O I 1 16 I ALEXANDER I 110 I 109 108 _ _ _ , ~ TC . I O O O I I _ 2 RONA I I~ ~ II NAWAZ~CO SCOVEL I RI S I -~~I-, O-'' v O O I 1 I O 1 I ~ TQ BM / 22 , , I f , V , , ,r I I 2 r MOYER 1 ~ WING I I . ~ I y E
~ GRUBSTEIN~McCULLOCH , I D E ~ CLEMENTS; GODFREY NORMAN I I 1 I I I I / 10l I~OX 1, TROMBETTA; vv WRIGHT 1 CURTIS I ORLEMANSKI ; vI ,r ~ I,~ BAGADE ~I ~ COX 11 ~ COWEN vv .1 ~ ~ ,1 ~ ~ I
- _J_ 1 1 ~ ~ I ~ ~ - ~ ' 1 i ~ ~ ~ 1 WICKSTRO 1 1 i °p0 °°01°°°° ° 0 I 1 I 1 °~N CApp I
I I i I 1 ! ~ ` 1 ~~i,~_ I I , I , / i i I `I r \ \ 11 I / ,l I r / °0°° +T / 0 00 I I 1 / 1 I / 1 l I r °0 ~ 00 000000 t/ 0 I I
I I I ` I ~ I ~ ; ARMANTROUYi~ I I , I , 1 '1 II I / 11 11 I / C 000 yL00 01 I
II I I ~ I,, I I I / / / I / 0 0 l / 0 ~ ~ I _-_I-__- , O ° \
~ , ~ 105 O \ _p 0 0 O
r , O O ° I LOTS 17-24 ~ °
PALMER i LMER RECORDED IN `~~OTS 12-15 _ ' , a, 9 ; F 9ao~o°,° R~C~Rfl€fl 1N ~po.p..,0•
r BM 1996 1 \r.-''~ ,--°6, S ~F 0°° 11 B~1 2000 °00o E' ~Ae°°° I
) PAGE 39 1 ,r °eeeeen °°0 I PA~E 747 'vv ,1 ~ i o o II 200
inr~ 1~7-1~R I~~i1~
I RECORDED IN 1 1 1 _ -
BM 1996 1 l 11 1 11 1 1 - SCALE; 1 ='100
LOTS 109- 116 PAGE 1415 Sheet No.
WITHERS R"ENEL RALL STORMWATER MANAGEMENT PLAN ENGINEERS I PLANNERS I SURVEYORS
No. Revision - - Date B Designer Scale ~ _ 11,V&R 1 =100 > i
sl_kEVIf W _Ct P ME-NTS _3 22 04 GAS By Date > r CARRAMORE SUBDIVISION OVERALL F!F~C 2nd REVIEW COMMENTS 4 30 04 GAS Drawn y
GAS cas 12/1 03 PHASE 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com -
- i^d 0 4/0, GAS ('perked By Iv No, C C _ I~1 M f v T _ JEC 203116 1 - -
- - - . 0000
i