20011881 Ver 1_Complete File_20011220

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Alan W. Klimek, P. E. Director
Division of Water Quality
Coleen H. Sullins, Deputy Director
Division of Water Quality
April 8, 2004
Waterford, LLC
5623 Duraleigh Road, Suite 151
Raleigh, NC 27612
DWQ Project No. 01-1881
Wake County
Page 1 of 3
Subject Property: Road Crossing # 10, Hasentree Golf Community, Hwy 98, Raleigh, NC
UT to Pierce Creek (Falls Lake) [03-04-01, 27-16.5-1-(2), WS-IV NSW]
APPROVAL of 401 Water Quality Certification and AUTHORIZATION CERTIFICATE per the Neuse River Buffer
Protection Rules (15A NCAC 2B.0233) with ADDITIONAL CONDITIONS
You have our approval, in accordance with 15A NCAC 02B .0233 and any conditions listed below, to impact
approximately 3,993 ft2 of Zone 1 and 2,749 ft2 of Zone 2 of the protected riparian buffers for the purpose of constructing
the proposed road crossing # 10 at the subject property as described within your application dated March 11, 2004. 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, Non-discharge and water supply
7ulations.
Th. iproval is only valid 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 authorization and approval letter and is thereby responsible for complying with all conditions. For
this approval to be valid, you must follow the conditions listed below.
Conditions:
1. New Plan - The proposed development shall be constructed as per the new plan submitted with your March 11,
2004 application. Notably, impacts to the protected riparian buffers shall not exceed 7,812 ft2 for road Crossing # 3,
6,742 ft2 for road Crossing # 10, and 6,486 ft2 for road Crossing # 7 (unless otherwise approved by the DWQ).
Also, open bottom culverts (that do not place fill within the stream channel) must be used for Crossing # 7 and
Crossing # 10.
2. Open Bottom & Bottomless Arch Culverts - You've stated within your application that open bottom culverts will be
used to cross the stream and that no impacts will occur to either wetlands or streams (at Crossing # 7 and Crossing
# 10). The proposed project must comply with all applicable water quality standards as listed in 15A NCAC 02B
.0200. The placement of the culverts shall not be conducted in a manner that may result in aggradation,
degradation or significant changes in hydrology of the stream bed and bank, adjacent to or upstream and
downstream of the structure. The openings must be provided to maintain the natural hydrology of the system as
well as prevent constriction of the floodway that may result in aggradation, degradation or significant changes in
hydrology of streams.
3. Previously Approved Water Quality Certification & Authorization Certificate -For this authorization to be valid, you
shall follow all of the conditions and mitigation requirements listed within your water quality certification and
authorization certificate approved by the DWQ on June 19, 2002.
4. Construction Plans - Any final construction plans for this project must include or reference the application and plans
approved by the DWQ under this authorization letter and certification.
Micnaei r. tasiey, uovernor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
North Carolina Division of Water Quality, WETLANDS / 401 UNIT
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
919-733-1786 (phone), 919-733-6893 (fax), http://h2o.enr.state.nc.us/ncwetlands
Waterford, LLC
Page 2 of 2
April 8, 2004
5. 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.
6. No Impacts Beyond the Footprint of the Impacts Depicted in the Approved PCN - 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
Preconstruction Notice Application. 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.
7. 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.
8. Diffuse Flow -An additional condition is that 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).
9. Certificate of Completion - Upon completion of all work approved within this authorization, 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.
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 Authorization Certificate shall expire five (5) years from the date of this letter.
This letter completes the review of the "No Practical Alternatives" determination under 15A NCAC 2B .0233. If you have
any questions or would like a copy of the buffer rules, please call [phone]. This letter does not authorize any
impacts to either Waters of the United States or Waters of the State. Please contact the US Army Corps of Engineers
(USACE) or NC Division of Water Quality (DWQ) if any impacts are proposed to either of these waters.
Sincerely,
k
ector
t'ead,Rraleigh,NC22
cc: Sean Clark, S&EC, Inc., 11010 Raven DWQ Raleigh Regional Office
DLR Raleigh Regional Office
File Copy
Central Office
DWQ # 011881
Date: April 8, 2004
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MAP I 1 20114
March 8, 2004
S&EC Project #: 4261.W0
Raleigh, NC l /bu4
RE: Request for Neuse River Riparian Buffer Compliance for additional impact
Hasentree Residential Subdivision
Wake County, North Carolina
Dear Mr. Zarzecki,
On behalf of Waterford LLC (property owners), we request written concurrence from the
NC Division of Water Quality (NC-DWQ) stating that the project complies with the
Neuse River Riparian Buffer Rules. A Pre-construction Notification Application (PCN)
is attached, which includes an agent authorization form.
The subject property is located northeast of the intersection of NC Highway 98 and Stony
Hill Road (S.R. 1917). Please refer to the attached USGS map, which displays the
location of the proposed project.
The impacts labeled on the attached map as 1-9 were permitted in 2002 by the USACE
(Action ID #200220397) and by the NC-DWQ ((DWQ Project #01-1881). The site plan
was revised to eliminate safety concerns due to traffic flow issues in the vicinity of the
planned clubhouse, which is a high pedestrian and golf cart traffic area. The newly
proposed Road Crossing (labeled "10" on the attached impact maps) is planned to
eliminate these safety concerns.
In order to cross the buffered channel without increasing the cumulative overall impact
totals, impacts 3 and 7 have been revised and their previously permitted buffer impacts
reduced. Even with the additional crossing, the cumulative buffer impacts have been
Charlotte Office: Greensboro Office: Hickory Office:
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]
Fax: [phone] Fax: [phone] Fax: [phone]
reduced to the point that they are less than what was previously permitted. Crossing 10
will utilize an open bottomed culvert in order to avoid any unnecessary stream impacts.
Crossing #3's buffer impacts have been reduced by 3,064 ft2 (2,209 ft2 in Zone 2 and 855
ft2 in Zone 1). Crossing #7's buffer impacts have been reduced by 5,748 ft2 (2,866 ft2 in
Zone 1 and 2,882 ft2 in Zone 2). Even with the proposed buffer impacts resulting from
the construction of Crossing 10, the overall buffer impacts for the site will be reduced by
2,070 ft2. Requested buffer impacts resulting from Impact 10 will total 6,742 ft2 (3993 ft2
in zone 1 and 2749 ft2 in zone 2) or 0.155 acre.
Please call if you require any additional information or have any questions.
Sincerely,
Sean Clark
Environmental Scientist
Attachments:
Pre-construction (PCN) notification form
Agent Authorization form
USGS Site Vicinity Map
Impact reference maps and details
Office Use Only: Form Version May 2002
USACE Action ID No. DWQ No.
(If any particular item is not applicable to this project, please enter "Not Applicable" or " iN/A".)
1. Processing
1. Check all of the approval(s) requested for this project:
? Section 404 Permit ® Riparian or Watershed Buffer Rules
? Section 10 Permit ? Isolated Wetland Permit from DWQ
? 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: N/A (buffer compliance only)
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: Waterford LLC
Mailing Address: 5623 Duraleigh Road
Suite 151
Raleigh NC 27612
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: SClarkpSandEC.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:
2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A
3. Property Identification Number (Tax PIN): 1811971499
4. Location
County: Wake Nearest Town: Raleigh
Subdivision name (include phase/lot number): Hasentree
Directions to site (include road numbers, landmarks, etc.): This property is located
northeast of the intersection of NC Highway 98 and Stony Hill Road (SR 1917), west
of Wake Forest, Wake County, North Carolina. The site is adiacent to the west of
the Lowery Creek branch of Falls Lake.
5. Site coordinates, if available (UTM or Lat/Long): (UTM) Zone 17, 7161e0m E, 3985590m N
(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): 722.62 acres
7. Nearest body of water (stream/river/sound/ocean/lake)
8. River Basin: Neuse
UT to Pierce Creek
(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 heavily forested and undeveloped.
The previously permitted crossings have had their centerlines cleared and crossings
Page 2 of 9
1 and 2 have been completely cleared within the proposed corridor. No roads have
yet been installed
10. Describe the overall project in detail, including the type of equipment to be used: The
proposed proiect is a residential golf community. The proposed impacts will result
from the installation of roads The roads will provide access to portions of the
property that are otherwise land-locked or isolated from the rest of the site. The
newly proposed Crossing #10 is planned to eliminate safety concerns raised by the
golf architect with vehicular access behind the clubhouse and between several
holes Heavy Equipment typically used for grading and construction will be utilized
for the installation of the roads onsite.
11. Explain the purpose of the proposed work: The site plan was revised to eliminate safety
concerns due to traffic flow issues in the vicinity of the planned clubhouse which is a high
pedestrian and golf cart traffic area Proposed crossing 10 will eliminate most of these
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.
The impacts labeled on the attached maps as 1-9 were permitted in 2002 by the USACE (Action
ID #200220397) and by the NC-DWQ ((DWQ Project #01-1881). The permitted impacts
included the construction of a pond as well as 7 road crossings a driveway crossing and golf cart
crossings
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
No additional impacts should be required in the future
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
Page 3 of 9
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
Provide a written description of the proposed impacts: Requested buffer impacts resulting
from Impact 10 will total 6,742 ft2 (3993 ft2 in zone I and 2749 ft2 in zone 2) or 0.155 acre.
No impacts to wetlands or streams will result from this additional impact.
2. Individually list wetland impacts below:
Wetland Impact
Site Number
(indicate on map)
Type of Impact* Area of
Impact
(acres) Located within
100-year Floodplain**
(yes/no) Distance to
Nearest Stream
(linear feet)
Type of Wetland***
NA NA NA NA NA NA

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at 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:_ +/- 3 acres
Total area of wetland impact proposed: no proposed additional impacts to wetlands _
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact
Site Number
(indicate on map)
Type of Impact* Length of
Impact
(linear feet)
Stream Name** Average Width
of Stream
Before Impact Perennial or
Intermittent?
(please specify)
NA NA NA NA NA NA

* 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.usgs.Qov. Several intemet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com,
www.mapquest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: no additional stream
impacts are requested.
Page 4 of 9
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 of Waterbody Type of Waterbody

(lake, pond, estuary, sound,

(indicate on map)
(acres) (if applicable) bay, ocean, etc.)
NA NA NA NA NA

* List each impact separately and identify temporary impacts. impacts include, out are not umrted to: uu, eacavauvu, .,res- s,
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.): NA
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): NA
Size of watershed draining to pond: NA Expected pond surface area: NA
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
infonnation 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 site plan was revised to eliminate safety concerns due to traffic flow issues in the
vicinity of the planned clubhouse which is a high pedestrian and golf cart traffic area. The
newly proposed Road Crossing (labeled "10" on the attached impact maps) is planned to
eliminate these safety concerns.
In order to cross the buffered channel without increasing the cumulative overall impact totals impacts 3 and 7 have
been revised and their previously permitted buffer impacts reduced Even with the additional crossing, the
cumulative buffer impacts have been reduced to the point that they are less than what was previously permitted.
Crossing 10 will utilize an open bottomed culvert in order to avoid any unnecessary stream impacts. Crossine #3's
buffer impacts have been reduced by 3,064 ft2 (2 209 ft2 in Zone 2 and 855 ft2 in Zone 1). Crossing #7's buffer
impacts have been reduced by 5,748 ft2 (2,866 ft2 in Zone I and 2,882 ft2 in Zone 2) Even with the proposed buffer
impacts resulting from the construction of Crossing 10, the overall buffer impacts for the site will be reduced by
2,070 ft2 Requested buffer impacts resulting from Impact 10 will total 6,742 ftZ (3993 ft2 in zone 1 and 2749 ft2 in
zone 2) or 0 155 acre
Page 5 of 9
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o.enr.state.nc.us/ncwetlands/strmgide.html.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
The owners have installed headwalls and crossed channels with open-bottom culverts to
minimize perennial channel impacts to the fullest extent possible. In addition, the proposed
road crossings will be placed in a perpendicular fashion. Due to the fact that the proposed
impact is below the thresholds for mitigation, S&EC believes no mitigation will be needed
(see attached impact map).
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
Page 6 of 9
the NCWRP is proposed, please check the appropriate box on page three and provide the
following information:
Amount of stream mitigation requested (linear feet): NA
Amount of buffer mitigation requested (square feet): NA
Amount of Riparian wetland mitigation requested (acres): NA
Amount of Non-riparian wetland mitigation requested (acres): NA
Amount of Coastal wetland mitigation requested (acres): NA
IX. Environmental Documentation (required by DWQ)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes ? No
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No ?
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No ?
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(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:
Page 7 of 9
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* Impact
(square feet) Multiplier Required
Mitigation
1 3993 3 NA
2 2749 1.5 NA
Total 6742 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 213.0242 or.0260.
NA Less than 1/3 acre of proposed buffer impact.
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.
NA Impervious surface area is 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 nronosed moiect will use an on-site wastewater treatment plant. All sewage generated
by the residential community will og through a tertiary treatment process. After fully treating the
wastewater, the treated water will then be used to supplement the irrigation of the golf course.
No direct discharge to streams will occur.
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules?
Yes ? No
Page 8 of 9
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).

M
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Page 9 of 9
i;-29-2C71 01:11pm From-CREEDI400R PARTNERS LLC
9195711521 T-398 P-002/002 F-684
Soil & Environmental Consultants, PA
I lolo Raven RV Road - R*Wsk North CamUm 27614 • Phona: [phone] • lkx-. [phone]
WWWSWUMC.com
AGENT AUMOMATION FORM
All Bla><?lcs To Be Haled In By The Current Landowner
Nanw- ' &U-210% L L r a?sc1 v w
Address:.,L 6 al l DvA41.e1 W. 94 S r ,7e L C I. k U t (P h N C A+(#Ia
Phone:
Project Nano/Leon: ?? S ? S 122 Q. ?.,?N c?
Date: t i ? 0/
The Department of the Army
U.S. Army Corps of h"nUmee s, Wzymngton District
P.O. Box 1890
yftdngton, NC 28402
Attn: f fAri4NDA ?wES
Field Office.- t,EZG ff
Re: Wetlands Mated Consulting and Permitting
To Whom It May Coalcern:
L the current owner, hereby designate and authorize Sod & Is`nvircuunental Consultants, FA, to
act in my behalf as my agent in the processing of pem* applications, to famish upon regpi st
supplemenud information in support of applications, etc. from this day fin ward. The day of
y?1.7 yQt?? Gfs?. ? 52.4 ?
This notifkation supersedes any previous correspondence cmeeming the agent for this project;
NOTICE: This alldw mtiOn, for liability and professional courtesy reasons, is valid only for
gover went officials to enter the property when accompanied by S&SC staff You should OR S&-EC
to arrange a site meeHag prior to vying the safe.
Vj firer eo Rn LLG $ y ?? /?XIe?L.I? /J?
P&d Property Owners Name
cc: Mr. John Domey
NCDENR - DWQ
2321 Crabtree Boulevard
Raleigh, NC 27604
,? a
Pro s Si lure
cc: Mr. Kevin Martin
Soo & Emvxrv tal Consultants, PA
UW& agent au& tom-doc
Cb Office: S DSI > x; c rv Of c
pM13 291, 3020-11Proq*riry Church Road 3817 E Lawndale Drive 914 9oam lZoad
Charlotte, NC 28269-7197 Greensboro, NC 27455 Taylo:svillG, NC 28661
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Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
June 19, 2002
Wake County
DWQ Project # 01-1881
APPROVAL of 401 Water Quality Certification and ADDITIONAL CONDITIONS,
WRP, Neuse River Buffer Rules
Waterford LLC
5623 Duraleigh Road
Suite 151
Raleigh, NC 27612
Dear Sirs:
You have our approval, in accordance with the attached conditions and those listed below, to place material in 3238
linear feet of streams and 7.2 acre of stream buffers for constructing the Hastentree residential subdivision and golf course in
Wake County, as you described in your application dated December 20, 2001. After reviewing your application, we have
decided that this fill is covered by General Water Quality Certification Numbers 3375 and 3362. These certifications allow
you to use Nationwide Permit Numbers 14 and 39 when the Corps of Engineers issues them. This approval is also valid for
the Neuse River buffer rules (15A NCAC 213 .03 1,1. In addition, you should get any other federal, state or local permits before
you go ahead with your project including (but not limited to) Sediment and Erosion Control, Coastal Stormwater, Non-
Discharge and Water Supply Watershed regulations. This approval will expire when the accompanying 404 or CAMA
permit expires unless otherwise specified in the General Certification. This Certification replaces the one issued to you
on February 12, 2002.
This approval is only valid for the purpose and design that you described in your application except as modified
below. 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 wetland fills for this project (now or in the future) exceed one
acre, compensatory mitigation may be required as described in 15A NCAC 2H .0506 (h) (6) and (7). This approval
shall expire when the corresponding Nationwide Permit expires or as otherwise provided in the General Certification.
For this approval to be valid, you must follow the conditions listed in the attached certification and any additional
conditions listed below. Deed notifications or similar mechanisms shall be placed on all remaining jurisdictional
wetlands and waters to notify the state in order to assure compliance for future wetland and/or water impact. These
mechanisms shall be put in place within 30 days of the date of this letter or the issuance of the 404 Permit (whichever
is later).
I. Deed notification or similar mechanisms shall be placed on all lots with remaining jurisdictional wetlands and waters or
areas 50 feet of all streams and ponds to notify the state in order to assure compliance for future wetland and/or water
impact. These mechanisms shall be put in place within 30 days of the date of this letter or the issuance of the 404 Permit
(whichever is later);
2. DWQ shall be copied with a detailed plan to plan and/or retain a 50 foot wide wooded buffer around the edge of the
proposed irrigation pond and stormwater pond at Impact 9;
3. Upon completion of the project, the applicant shall complete and return the enclosed "Certification of Completion Form"
to notify DWQ that all the work included in the 401 Certification has been completed. The responsible party shall
complete the attached form and return it to the 40] [Wetlands Unit of the Division of Water Quality.
N. C. Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617
Service
[phone]
;
A
A
NCDEW
Customer
1 800 623-
7748
We understand that you have chosen to contribute to the Wetland Restoration Program in order to compensate for
these impacts to wetlands and/or streams. In accordance with 15A NCAC 2R .0402, this contribution will satisfy our
compensatory mitigation requirements under 15A NCAC 2H .0506(h). According to 15A NCAC 2H .0506(h), feet of
restoration will be required. Until the Wetland Restoration Program receives and clears your check (made payable to:
DENR - Wetland Restoration Program), wetland or stream fill shall not occur. Mr. Ron Ferrell should be contacted at
919-733-5083 ext. 358 if you have any questions concerning the Wetland Restoration Program. Payment must be made
prior to the occurrence of impacts. For accounting purposes, this Certification authorizes the fill of 7.2 acres of
stream buffers and 3238 linear feet of streams, in 030401 river and subbasin and 3.2 acres of riparian restoration
and 1341 linear feet of stream restoration are required. Please be aware that the Wetland Restoration Program
(WRP) rules require rounding of acreage amounts to one-quarter acre increments (15A 2R.0503(b)).
If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You must
act within 60 days of the date that you receive this letter. To ask for a hearing, send a written petition which conforms
to Chapter 150B of the North Carolina General Statutes to the Office of Administrative Hearings, P.O. Box 27447,
Raleigh, N.C. 27611-7447. This certification and its conditions are final and binding unless you ask for a hearing.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If you
have any questions, please telephone John Dorney at 919-733-1786.
Attachment
cc: Corps of Engineers Raleigh Field Office
Raleigh DWQ Regional Office
Ron Ferrell; Wetland Restoration Program
File copy
Central Files
Sean Clark; Soil and Environmental Consultants
NORTH CAROLINA-DIVISON OF WATER QUALITY
401 WATER QUALITY CERTIFICATION
SUMMARY OF PERMITTED IMPACTS AND MITIGATION REQUIREMENTS
In accordance with 15A NCAC 2 H .0500, Waterford, LLC has permission as outline below for the purpose(s) of
proposed Hasentree subdivision. All activities associated with these authorized impacts must be conducted with the
conditions listed in the attached certification transmittal letter. THIS CERTIFICATION IS NOT VALID WITHOUT
THE ATTACHMENTS.
COMPENSATORY MITIGATION REQUIREMENT WETLAND RESTORATION PROGRAM
LOCATION NC 98 and SR 1917
COUNTY: Wake
BASIN/SURBASIN 030401
As required by 15A NCAC 2H .0506, and the conditions of this certification, you are required to compensate for
the above impacts through the restoration, creation, enhancement or preservation of wetlands and surface waters 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 wetland Restoration Programs must be rounded to
one-quarter acre increments according to 15 2r .0503(b)
acres of Class WL wetlands
acres of riparian wetland
acres of non-riparian wetlands
acres of Class SWL wetlands
3.2 acres of stream buffers
1341 linear feet of stream channel
(other)
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 NCAC 2R .0503. If you choose this option, please sign this form and
mail it to the Wetlands Restoration Fund 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 RECEIVE NOTIFICATION THAT YOUR PAYMENT HAS BEEN PROCESSED BY THE
WETLANDS RESTORATION PROGRAM.
Signature Date
WETLANDS RESTORATION PROGRAM
DIVISON OF WATER QUALITY
1619 Mail Service Center
RALEIGH, N.C. 27669-1619
[phone]
\??F W A TF9oG
O <
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Gregory J. Thorpe, Ph.D.
Acting Director
Division of Water Quality
February 12, 2002
Wake County
DWQ Project # 01-1881
APPROVAL of 401 Water Quality Certification and ADDITIONAL CONDITIONS,
WRP, Neuse River Buffer Rules
Waterford LLC
5623 Duraleigh Road
Suite 151
Raleigh, NC 27612
Dear Sirs:
You have our approval. in accor.ance with the attached conditions and those listed below, to place
material in 3238 linear feet o= stream and 7.2 acre of stream buffers for constructing the Hastentree
residential subdivision and if cour` in Wake Counvv% as you described in your application dated
December 20, 2001. After re .iewin_ your application, we have decided that this fill is covered by General
Water Quality Certification Numbers 289 and 3287. These certifications allow you to use Nationwide
Permit Numbers 1 1 and 39 when the Corps of Engineers issues them. This approval is also valid for the
Neuse River buffer riles (15A NCAC 213 .033). In addition, you should get any other federal, state or local
permits before you To aheac :pith -..o- project including (but not limited to) Sediment and Erosion Control,
Coastal Stormwater, Non-Discharge ;mod Water Supply Watershed regulations. This approval will expire
when the accompan Jfic; 404 or CA_1LA permit expires unless otherwise specified in the General
Certification.
This approval is only valid for th-_ purpose and design that you described in your application except
as modified below-. ii you c=.snge yaur project. you must notify us and you may be required to send us a
new application. If tae properry is s'id, the new owner must be given a copy of this Certification and
approval letter and i_ thereby -espon-a-ble for complying with all conditions. If total wetland fills for this
project (now or in the future exceed one acre, compensatory mitigation may be required as described in
15A NCAC 2H .0506 (h) (6) and (7}_This approval shall expire when the corresponding Nationwide
Permit expires or as otherwise provi&-d in the General Certification. For this approval to be valid, you
must follow the conditions liked in te attached certification and any additional conditions listed below.
Deed notifications or similar mechanisms. shall be placed on all remaining jurisdictional wetlands and
waters to notify the state in order to assure compliance for future wetland and/or water impact. These
mechanisms shall be put in place wid3in 30 days of the date of this letter or the issuance of the 404
Permit (whichever is later).
1. Deed notificzdon or 3imilarmechanisms shall be placed on all lots with remaining jurisdictional
wetlands and waters or areas 50 feet of all streams and ponds to notify the state in order to assure
compliance for future wetland and/or mater impact. These mechanisms shall be put in place within 30
days of the daze of this lettez or the issuance of the 404 Permit (whichever is later).
2. DWQ shall be copied-with a detailed plan to plan and/or retain a 50 foot wide wooded buffer
around the edge of the proposed irrigation pond and stormwater pond at Impact 9.
Ag A
N 6EN
Wetlands/401 Unit 1650 Mail dice >nte< =-deigh, NC 27699-1650 Ph: [phone] Fax: [phone] Customer Service
1 800 623-7748
Upon completion of the project, the applicant shall complete and return the enclosed "Certifvation
of Completion Form" to notify DWQ that all the work included in the 401 Certification has been
completed. The responsible party shall complete the attached form and return it to the 401/Wetlands
Unit of the Division of Water Quality.
We understand that you have chosen to contribute to the Wetland Restoration Program in order to
compensate for these impacts to wetlands and/or streams. In accordance with 15A NCAC 2R.0402, this
contribution will satisfy our compensatory mitigation requirements under 15A NCAC 2H .0506(h).
According to 15A NCAC 2H .0506(h), feet of restoration will be required. Until the Wetland Restoration
Program receives and clears your check (made payable to: DENR - Wetland Restoration Program),
wetland or stream fill shall not occur. Mr. Ron Ferrell should be contacted at 919-733-5083 ext. 358 if
you have any questions concerning the Wetland Restoration Program. You have one month from the
date of this Certification to make this payment. For accounting purposes, this Certification authorizes
the fill of 7.2 acres of stream buffers and 3238 linear feet of streams, in 030401 river and subbasin
and 3.2 acres of riparian restoration and 1341 linear feet of stream restoration are required.
Please be aware that the Wetland Restoration Program (WRP) rules require rounding of acreage
amounts to one-quarter acre increments (15A 2R.0503(b)).
If you do not accept any of the conditions of this certification, you may ask for an adjudicatory
hearing. You must act within 60 days of the date that you receive this letter. To ask for a hearing, send a
written petition which conforms to Chapter 150B of the North Carolina General Statutes to the Office of
Administrative Hearings, P.O. Box 27447, Raleigh, N.C. 27611-7447. This certification and its
conditions are final and binding unless you ask for a hearing.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water
Act. If you have any questions, please telephone John Dorney at 919-733-1786.
i ce
11
egory J. Thorpe, Ph
cting Director
Attachment
cc: Corps of Enginders Raleigh Field Office
Raleigh DWQ Regional Office
Ron Ferrell; Wetland Restoration Program
File copy
Central Files
Sean Clark; Soil and Environmental Consultants

NORTH CAROLINA-DIVISON OF WATER QUALITY
401 WATER QUALITY CERTIFICATION
SUMMARY OF PERMITTED IMPACTS AND MITIGATION REQUIREMENTS
In accordance with 15A NCAC 2 H.0500, Waterford, LLC has permission as outline below for the
purpose(s) of proposed Hasentree subdivision. All activities associated with these authorized impacts
must be conducted with the conditions listed in the attached certification transmittal letter. THIS
CERTIFICATION IS NOT VALID WITHOUT THE ATTACHMENTS.
COMPENSATORY MITIGATION REQUIREIN ENT WETLAND RESTORATION PROGRAM
LOCATION NC 98 and SR 1917
COUNTY: Wake
BASIN/SUBBASIN 030401
As required by 15A NCAC 2H.0506, and t-e conditions of this certification, you are required to
compensate for the above impacts through the re:zoration- creation, enhancement or preservation of
wetlands and surface waters as outlined below pnor to conducting any activities that impact or degrade
the waters of the state.
d through the wetland Restoration Programs must be
Note: Acreage requirements proposed to be mi ?,
rounded to one-quarter acre increments accorcir - to 15 ?'- .0503(b)
acres of Class WL wetlands
acres of riparian wetland,
acres of non-riparian wer=ds
acres of Class SWL wetlands
.L.22_ acres of stream buffers
1341 linear feet of stream channel
(other)
One of the options you have available to sa-w the compmsator?T mitigation requirements is through
the payment of a fee to the Wetlands Restorabon Fund per NCAC 2R .0503. If you choose this option,
please sign this form and mail it to the,Wetlands Restoration Fund at the address listed below. An
invoice for the appropriate amount of paymerm -uffl be se= io you upon receipt of this form. PLEASE
NOTE, THE ABOVE; IMPACTS ARE NOT AL-THOR= UNTIL YOU RECEIVED
NOTIFICATION THAT YOUR PAYMENT HA.S BEEN PROCESSED BY THE WETLANDS
RESTORATION PROGRAM.
Signature Datr
WETLANDS R?ESTORA7UC3Iv PROGRAM
DIVISON OF WATER QUALITY
1619 MO Servi= Center
RALEIGIL N.C. 27559-1619
[phone]
:j
MEMORANDUM
TO: John Dorney Regional Contact: Steve Mitchell
Non-Discharge Branch WQ Supervisor: Ken,';ctu ster
Date:
SUBJECT: WETLAND STAFF REPORT AND RECOMMENDATIONS
Facility Name Waterford LLC Hastentree
Project Number 01 1881
Recvd From APP
Received Date 12/20/01 Recvd By Region
Project Type resedential
County W ake
County2
Region
Certificates Stream Stream Impacts (ft.)
Permit Wetland Wetland Wetland Stream Class Acres Feet
Type Type Impact Score Index Prim. Supp. Basin Req. Req. ME
14 F- O Y O N ?- 27-16.5-1-( ws1V NSW CA 30,401. F_-
I 39 F_O Y ©N F__7_ ? ?? 30,40 L 1
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 O N Recommendation: 0 Issue 0 Issue/fond 0 Deny
Provided by Region: Latitude (ddmmss) Longitude (ddmmss)
Comments:
This golf coarse imposes the reuse of water for golf course irrigation.
Previous approval 00-1061 for road crossings.
Need specifics of mitigation and the reestblished buffer around the new irrigation lake,
cc: Regional Office
Central Office Page Number 1
December 20, 2001
RE: Nationwide Permit 39, 401-Water Quality Certification, and
Neuse River Buffer Rules Compliance
Hasentree Residential Subdivision
Wake County, North Carolina
UTM Coordinates: Zone 17, 716160" E, 3985590m N
S&EC Project #: 99-4261 2 200
Dear Mr. Dorney and Ms. Jones:
On behalf of Waterford LLC (property owners), we request authorization from the US
Army Corps of Engineers (USACE) to use Nationwide Permit 39 for the permanent
stream channel impacts resulting from the construction of roads and an irrigation pond
within the proposed residential golf community of Hasentree. Some crossings will not
impact streams but will only impact the riparian buffers (see attachments for details).
This submittal is also a request for a written concurrence from the NC Division of Water
Quality (NC-DWQ) stating that the project complies with the 401-Water Quality
Certification associated with Nationwide Permit 39, as well as the Neuse River Riparian
Buffer Rules. A Pre-construction Notification Application (PCN) is attached, which
includes an agent authorization form.
The proposed Hasentree project is located northeast of the intersection of NC Highway
98 and Stony Hill Road (S.R. 1917) (see attached USGS site vicinity map) in Wake
County, North Carolina.
The USACE issued Nationwide Permits 14 and 39 (Action ID # 200021632 and
200021633) for stream and wetland impacts resulting from the four road crossings of
Phase 1 of Hasentree (see Crossings 1-4 on attached impact map). Nationwide Permit 39
(NWP 39) permitted impacts to 105 linear feet of important, perennial channel and 0.079
acres of wetland (a portion of this wetland total is unimportant, intermittent, unbuffered
channel. Nationwide Permit 14 (NWP 14) granted permission to impact 252 linear feet
of important, perennial channel (the 404 permit misidentifies the two stream crossing
Charlotte Office: Greensboro Office: Hickory Office:
PMB 291, 3020-1 Prosperity Church Road 3817-E Lawndale Drive 910 Boston Road
Charlotte, NC 28269-7197 Greensboro, NC 27455 Taylorsville, NC 28681
Phone: [phone] Phone: [phone] Phone [phone]
Fax: [phone] Fax: [phone] Fax: [phone]
nvironmental Consultants, PA
)ho - Raleigh, North Carolina 27614 - Phone: [phone] • Fax: [phone]
NCDENR-DWQ US Army Corps of Engineers
Attn: Mr. John Dorney Attn: Ms. Amanda Jones
2321 Crabtree Boulevard, Suite 250 6508 Falls of the Neuse Rd.,
Raleigh, NC 27604 Raleigh, NC 27615
2
utilizing NWP 14 as being unimportant and intermittent) for two road crossings. A copy
of the 404 permit is attached.
On October 6, 2000, the NC-DWQ issued the approval of a 401 Water Quality
Certification and Neuse Buffer Compliance (DWQ# 00-1061) for the same four road
crossings previously mentioned. Mr. Bob Zarzecki of the NC-DWQ confirmed the
buffers during a site meeting on May 5, 2000 and an attached copy of his June 13, 2000
letter discusses his findings (DWQ Project #00-781 and NBRRO Project # 00-156). On
October 12, 2001, Mr. Zarzecki reevaluated a channel feature on site and a copy of the
letter discussing that site meeting is also attached.
The original golf course community site plan had two large irrigation ponds, one on
Pierce Creek as well as the current proposed pond. The pond planned on Pierce Creek
would have flooded several perennial tributaries and was abandoned in an effort to
minimize the impacts on-site. The majority of the proposed impacts result from road
crossings required to access upland portions of the property. In an effort to minimize
impacts to the stream channels on-site, all of the crossings are perpendicular and arch
culverts will be utilized at crossings 7 and 8. To further reduce impacts to the buffers,
Crossing 8 is a shared driveway used to access three lots. Approximately 78.4 acres of
otherwise usable land on the property will be designated as open space. The remainder of
undeveloped land will consist of 17.7 acres of conservation easement, 11.5 acres of utility
easement, 65.1 acres of Neuse River Buffers, and 7.3 acres of Wake County buffers.
Although clearing in Zone 2 is allowed, the entire 50 feet of the Neuse River Riparian
Buffers will remain uncleared in areas not designated as one of the 9 impact locations. In
addition to the 50' Neuse River Riparian Buffers, 50 feet will be added adjacent to Zone
2 on most areas along the main perennial streams on-site (see map). These additional
buffers will only be disturbed in areas where the walking trail/cart path runs through them
or in areas where some grading is necessary. The graded areas will then be revegetated.
Stormwater devices will be positioned on-site to treat all stormwater that falls on-site
before it exits the property.
An office meeting was held with Mr. Mark Ashness (CE Group), Steve Levitas
(Kilpatrick Stockton), Kevin Martin (S&EC, PA), Mr. Bob Zarzecki (NC-DWQ), and
Mr. John Dorney (NC-DWQ) present to discuss the change of upland development on the
project from that shown on the August 10, 2000 submittal. During this meeting Mr.
Dorney stated that the change in upland development would not affect the NC-DWQ's
earlier issuance of the 401-compliance and Neuse Buffer Compliance for the four road
crossings (Crossings 1-4 on impact maps). Mr. Dorney also stated that assuming buffers
are placed around the proposed irrigation pond (see impact maps), that the pond would be
permittable with regards to 401-compliance and Neuse Buffer Regulations. The
proposed pond on-site (see map) will be used for irrigation purposes only and will not be
used to treat stormwater. Although ponds placed on perennial streams for the use of
treating stormwater are not allowed using NWP 39, irrigation ponds are not prohibited.
Therefore we request the use ofNWP 39 for the dam/road crossing construction and
flooding of a perennial stream for the purpose of creating an irrigation pond. Forested
buffers will be left around the waters edge of the proposed irrigation pond. Neither Zone
3
of the new buffers will be cleared and an additional 50' buffer will be placed on the outer
edge of Zone 2. A site meeting was conducted with Ms. Amanda Jones of the USACE
and I on October 24, 2001 to review the streams and wetlands on site. Specifically, areas
within the proposed dam and flooding area were reviewed. An upland data form was
completed on the pond side of the proposed dam area and is include with this submittal.
As stated above the previously permitted road impacts totaled 252 linear feet of important
channel utilizing NWP 14 and NWP 39 was used for impacts to 105 linear feet of
important perennial channel and 0.079 acres of wetland. The impact totals for these
crossings will remain the same. The location of Crossing 4 will shift slightly downstream
(approximately 20 feet), but the channel impact will be the same. The additional
proposed road crossing impacts to important channels will total 195 linear feet. This road
crossing will be placed on the proposed dam for the irrigation pond (see impact maps).
As discussed above, the irrigation pond will flood 1,902 linear feet of important,
perennial c4am 9 mar fee 470 ft2 or 0.0567 acres) of unimportant
intermittenImpacts to unim rtant, intermi ttent, unbuffered channel resulting
from Impamwater pond) total 53 linear feet (312 ft2 or 0.0072 acres .
Proposed i s utilizing 9 to: perenm channels resulting
from fill w5 tin et (in addition to the previously permitted 105 linear
feet), 2) important, perennial channels resulting from flooding will equal 1,902 linear
feet, 3) unimportant, intermittent channel due to flooding will equal 988 linear feet (2470
ft2 or 0.0567 acres), and 4) unimportant, intermittent, unbuffered channels due to
fill/excavation will equal 53 linear feet (312 ft2 or 0.0072 acres).
V ?l l
After office meetings and phone conversations a 1/2:1 mitigation ratio has been agreed
upon by Ms. Amanda Jones of the USACE for the 1,902 linear feet channel impacts
resulting from the flooding. A 2:1 mitigation ratio is required for the 195 linear foot
dam/road crossing. Stream mitigation totals for the site are 1341 linear feet. The client
proposes payment into the Wetland Restoration Fund to meet the required stream
mitigation totals. At $125 per linear foot, the stream mitigation total will equal $167,625.
As requested by Mr. Todd Tugwell (USACE) and Ms. Jones, all stormwater treatment
ponds are shown on the overall site plan.
Buffer impacts resulting from the proposed site plan are summed up on each enlarged
impact map. Because the proposed walking trails/cart paths have a 15' wide clearing and
cross the channels at perpendicular angles, the general impact area for each crossing is
1500 ft2 (0.0344 acre) with zone 1 im 0.0207 acre) and zone 2 impacts of
600 ft2 (0.0138 acre). The NC-DW 's rrent policy quires buffer mitigation if buffer
impacts exceed 1/3 acre or 150 lin ar feet per tributary There are several tributaries and
channels with only one or two cro ings that do not ceed the previously mentioned
thresholds, however for tributaries ' . pacts of greater than 1/3 acre buffer
mitigation is proposed. Buffer mitigation is only required for impacts to Pierce Creek
and Water Fork Creek. Zone 1 impacts to Pierce Creek due to road Crossing 4 and
walking trail/ cart path crossings total 14,312 ft2 (0.3286 acre). Zone 2 impacts to Pierce
Creek total 8,467 ft2 (0.1944 acre). Zone 1 impacts to Water Fork Creek resulting from
4
Crossings 5 and 7 and walking trail/cart path crossings total 20,815 ft2 (0.4779 acre).
Zone 2 impacts to Water Fork Creek total 14,314 ft (0.3286 acre). Crossings 3 and 8 are
not included with the above referenced impacts to Pierce Creek because Crossings 3 and
8 impact separate tributaries to Pierce Creek. Please see the attached Buffer Mitigation
Calculations sheet. The channel impacted by Crossing 8 has a drainage area of 28.74
acres (the northern unnamed tributary has a larger drainage area of 33.75 acres) and is
therefore considered to be a tributary of the channel impacted by Crossing 3
mitigation required for the proposed project totals 35,127ft2 (0.8064 acre) for Zone 1 and
22,781 ft2 (0.5230 acre) for Zone 2. The client proposes payment of $133,970.88 to the
NC Buffer Restoration Program for buffer mitigation for the proposed project.
Please call me if you have any questions or send me an email at [e-mail].
Sincerely,
Sean Clark
Environmental Scientist
Attachments:
Pre-construction (PCN) notification form
Agent Authorization Form
USGS Site Vicinity Map
Wake County Soil Survey Map
Previous 401-certification (Crossings 1-4)
Previous 404-certification (Crossings 1-4)
Updated NBR letter from Mr. Bob Zarzecki
Original NBR letter from Mr. Bob Zarzecki
Data Forms
Buffer Mitigation Calculation sheet
CE Group cover letter
Impact Summary
Impervious Calculations
Pedestrian Trails / Cart Paths information
Overall site plan (4 sheets)
Enlarged impact maps for each impact area (3-4 sheets per impact area)
DENR $475 Check (NC-DWQ copy only)
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CAMA Coordination - If the project occurs in any of North Carolina's twenty coastal counties (listed on
the last page of this application) the applicant should also contact the North Carolina Division of Coastal
Management (DCM) at [phone]. DCM will determine whether or not the project involves a
designated Area of Environmental Concern, in which case DCM will act as the lead permitting agency.
In such cases, DCM will require a Coastal Area Management Act (CAMA) Permit and will coordinate
the 404/401 Permits.
USACE Permits - Submit one copy of this form, along with supporting narratives, maps, data forms,
photos, etc. to the applicable USACE Regulatory Field Office (addresses are listed at the end of this
application). Upon receipt of an application, the USACE will determine if the application is complete as
soon as possible, not to exceed 30 days. This PCN form is designed for the convenience of the applicant
to address information needs for all USACE Nationwide, Regional or General permits, as well as
information required for State authorizations, certifications, and coordination. Fully providing the
information requested on this form will result in a complete application for any of the USACE
Nationwide, Regional or General permits. To review the minimum amount of information that must be
provided for a complete PCN for each USACE Nationwide permit, see Condition 13, 65 Fed.Reg. 12893
(March 9, 2000), available at http://www.saw.usace.anny.mil/wetlands/nwpfinalFedReg_pdf.
Processing times vary by permit and begin once the application has been determined to be complete.
Please contact the appropriate regulatory field office for specific answers to permit processing periods.
401 Water Quality Certification or Buffer Rules - All information is required unless otherwise stated
as optional. Incomplete applications will be returned. Submit seven collated copies of all USACE
Permit materials to the Division of Water Quality, 401/Wetlands Unit, 1650 Mail Service Center,
Raleigh, NC, 27699-1650. If written approval is required or specifically requested for a 401
Certification, then a non-refundable application fee is required. In brief, if project impacts include less
than one acre of cumulative wetland/water impacts and less than 150 feet cumulative impacts to
streams, then a fee of $200 is required. If either of these thresholds is exceeded, then a fee of $475 is
required. A check made out to the North Carolina Division of Water Quality, with the specific name of
the project or applicant identified, should be stapled to the front of the application package. For more
information, see the DWQ website at http://h2o.ehnr.state.nc.us/ncwetlands/fees.httnl. The fee must be
attached with the application unless the applicant is a federal agency in which case the check may be
issued from a separate office. In such cases, the project must be identifiable on the U.S. Treasury check
so that it can be credited to the appropriate project. If written approval is sought solely for Buffer Rules,
the application fee does not apply, and the applicant should clearly state (in a cover letter) that only
Buffer Rule approval is sought in writing. Wetlands or waters of the U.S. may not be impacted prior to
issuance or waiver of a Section 401 Water Quality Certification. Upon receipt of a complete application
for a 401 Certification, the Division of Water Quality has 60 days to prepare a written response to the
applicant. This may include a 401 Certification, an on-hold letter pending receipt of additional
requested information, or denial.
Page 2 of 13
Office Use Only: Form Version April 2001
USACE Action ID No. DWQ No.
If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than
leaving the space blank.
1. Processing
1. Check all of the approval(s) requested for this project:
® Section 404 Permit
? Section 10 Permit
® 401 Water Quality Certification
® Riparian or Watershed Buffer Rules
2. Nationwide, Regional or General Permit Number(s) Requested: 14 and 39
3. If this notification is solely a courtesy copy because written approval fcr the 401 Certification
is not required, check here: ?
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (see section VIII - Mitigation), check here:
II. Applicant Information
1. Owner/Applicant Information
Name: Waterford LLC
Mailing Address: 5623 Duraleigh Road
Suite 151
Raleigh. NC 27612
Telephone Number: [phone] Fax Number:
E-mail Address:
2. Agent Information (A signed and dated copy of the Agent Authorization letter must be
attached if the Agent has signatory authority for the owner/applicant.)
Name: Sean Clark
Company Affiliation: Soil & Environmental Consultants, Inc.
Mailing Address: 11010 Raven Ridge
Raleigh, NC 27614
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: SClark(aD.SandEC.com
Page 3 of 13
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Hasentree
2. T.I.P. Project Number (NCDOT Only): N/A
3. Property Identification Number (Tax PIN): 1811971499
4. Location
County: Wake County Nearest Town: Raleigh
Subdivision name (include phase/lot number): Hasentree (Phase 2)
Directions to site (include road numbers, landmarks, etc.): This property is located
northeast of the intersection of NC Highway 98 and Stony Hill Road (SR 1917), west
of Wake Forest Wake County, North Carolina. The site is adjacent to the west of
the Lowery Creek branch of Falls Lake.
5. Site coordinates, if available (UTM or Lat/Long): (UTM) Zone 17, 716160m E. s985s9om N
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Describe the existing land use or condition of the site at the time of this application: The
site is currently heavily forested and undeveloped. The previously permitted
crossings have been cleared, but have not yet been installed and completed.
7. Property size (acres): 722.62 acres
8. Nearest body of water (stream/river/sound/ocean/lake): Pierce Creek. Water Fork
Creek and Lowery Creek
9. River Basin: Neuse River Basin
Page 4 of 13
(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/mus/.)
10. Describe the purpose of the proposed work: The proposed proiect is a residential golf
community. The proposed impacts will result from the installation of roads and an
irrigation pond The roads will provide access to portions of the property that are
otherwise land-locked or isolated from the rest of the site. The irrigation pond will
provide water for irrigating the fairways and golf greens The pond will not be used
as stormwater detention.
11. List the type of equipment to be used to construct the project: Heavy Equipment picallY
used for grading and construction will be utilized for the installation of the roads and
the pond onsite
12. Describe the land use in the vicinity of this project: The surrounding land is currently
residential forested or in agriculture.
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.
Prior permits (401 and 404) have been issued for four road crossings of four
separate drainage features. Copies of the 401 (DWQ# 00-1061) and the 404 are
attached. The Nationwide Permit 39 (AID #200021633) was used to authorize impacts
to an important channel and a linear wetland/unimportant channel. Nationwide Permit
14 was used to authorize impacts to two separate important, perennial channels. Mr.
Bob Zarzecki conducted field confirmation of the Neuse Buffers (DWQ #00-0781,
NBRRO #00-156) and his letters are attached.
V. Future Project Plans
Are any additional permit requests anticipated for this project in the future? If so, describe the
anticipated work, and provide justification for the exclusion of this work from the current
application: No additional future permits are known to be required at this time. Access
to the majority of the property will be gained with the proposed impacts.
Page 5 of 13
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
1. Wetland Impacts
Wetland Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
acres Located within
100-year Floodplain**
es/no Distance to
Nearest Stream
linear feet
Type of Wetland***
N/A

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill,
excavation, flooding, ditching/drainage, etc. For dams, separately list inpacts 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 bgp://www.fema.gov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.)
List the total acreage (estimated) of existing wetlands on the property: 3 acres
Total area of wetland impact proposed: 0 (only stream channel impacts are proposed)
2. Stream Impacts, including all intermittent and perennial streams
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?
leasespecify)
Crossing 5 dam /road 195 l.f. Water Fork Creek + 12' perennial
crossing (fill) -
28901.f.

Impact 6
Flooding (pond) (1902 l.f. of
perennial/ Water Fork Creek and
unnamed tributaries to + 12' (Water Fork)
' Perennial (water Fork)

important)
Water Fork + 2
(tributaries) intermittent (tributaries)
Page 6 of 13
o
2,23

Crossing 7 Open bottomed
culvert (i.e. no
channel impact)
N/A
Water Fork Creek
+ 8'
perennial

Crossing 8 Open bottomed
culvert (i.e. no
channel impact)
N/A
UT to Pierce Creek
+ 6'
perennial
Impact 9 Road crossing
fill 53 l.f. UT to Water Fork
Creek 34' intermittent

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated riprap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www,usgs.gov. Several intemet sites also allow direct download and printing of USGS maps (e.g., www.Mozone.com,
www.mapguest.com etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 3,138 l.f. (proposed),
442 l.f. (previously permitted) = 3,6331.f. (total)
3. Open Water Impacts, including Lakes, Ponds, Estuaries, Sounds, Atlantic Ocean and any
other Water of the U.S.
Open Water Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
acres Name of Waterbod
(if applicable) y Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.
N/A

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: fill, excavation, dredging,
flooding, drainage, bulkheads, etc.
4. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ? uplands ® stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): A dam will be constructed to restrict the flow of water
in the perennial channel
Page 7 of 13
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): The pond will be constructed to provide irrigation for
the proposed golf course.
Size of watershed draining to pond:620.7 acres Expected pond surface area:412,618 ft2
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.
Two irrigation ponds were originally proposed for the site however to reduce impacts only
one is currently requested. Two ponds would have made the irrigation of the golf course greens
less expensive (i.e. less pipe required), however, to reduce impacts the second pond plan was
abandoned.
Where possible open bottomed culverts will be used to avoid additional impacts to perennial
channels. Corssings 7 and 8 (see attached impact map) will use the open bottomed culverts to
avoid permanent impacts to the stream channels.
Impact 8 is a shared driveway required to access a portion of isolated upland The shared
driveway is proposed in an effort to reduce the additional stream buffer impacts that would occur
from two driveway crossings.
The proposed walking / cart trails have been rerouted to avoid additional buffer impacts and
to avoid the wetland areas on site. The original plan proposed some nonperpendicular buffer
impacts as well as the crossing of a jurisdictional wetland. The trails have been rerouted to avoid
these impacts.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
Page 8 of 13
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o.enr.state.nc.us/ncwetlands/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.
To mitigate for stream impacts and buffer impacts, payment to the NC Wetland
Restoration Program and the NC Buffer Restoration Program will be made. Also additional
buffers have been placed on the perennial streams with proposed impacts see attached
impact map).
Ms. Amanda Jones of the USACE has determined the mitigation ratios for the only
proposed stream impacts requiring` stream mitigation. Impact 5 (dam/road crossing) will
have a mitigation ratio of 2:1. Impact 6 flooding for the irrigation pond) will have a
mitigation ratio of'h:1.
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that
you would like to pay into the NCWRP. Please note that payment into the NCWRP must be
reviewed and approved before it can be used to satisfy mitigation requirements. Applicants
will be notified early in the review process by the 401 /Wetlands Unit if payment into the
NCWRP is available as an option. For additional information regarding the application
process for the NCWRP, check the NCWRP website at hilp://h2o.enr.state.nc.us/wrp/indexhtnt 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): 1,341 linear feet
Amount of buffer mitigation requested (square feet): 139,553 ft2 (after adding multipliers)
Amount of Riparian wetland mitigation requested (acres): 0 N/A
Amount of Non-riparian wetland mitigation requested (acres): 0 N/A
Amount of Coastal wetland mitigation requested (acres): 0 N/A
Page 9 of 13
IX.
Environmental Documentation (DWQ Only)
Does the project involve an expenditure of public funds or the use of public (federal/state/local)
land?
Yes ? No
X.
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 (DWQ Only)
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 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify Neuse ?
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.
Total buffer impacts for the project
(including previously permitted impacts)
Zone* Impact
(square feet Multiplier Required
Mitigation
1 121,327 ft'
2 191,230 ft' 1.5
Total 312,557 W
* 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.
Page 10 of 13
For areas where buffer mitigation is required
Zone* s uare feet Multiplier Mitig ton
1 35,127 f e 105,381 ft
2 22,781 if 1.5 34,172 W
Total 57,908 if 1 39,553 ftz
* 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.
The client has nronosed an additional 50' buffer on the maioritv of Water Fork Creek and Pierce
Creek. In addition the client proposes payment to the NC Buffer Restoration Fund for required
buffer mitigation
XI. Stormwater (DWQ Only)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
Impervious surfaces for the proposed site elan will total 13.9% for the R-80W section of the site
and 14.8% for the R-40W section. The overall impervious surface for the site is 14.4% (see
attached "Impervious Calculation" sheet).
XII. Sewage Disposal (DWQ Only)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
The proposed moiect will use an on-site wastewater treatment plant. All sewage generated by
the residential community will go through a tertiary treatment process. After fully treating the
wastewater, the treated water will then be used to supplement the irrigation of the golf course.
No direct discharge to streams will occur.
XIII. Violations (DWQ Only)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
Page 11 of 13
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).
<wd. &a December 20, 2001
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
US Army Corps Of Engineers Field Offices and County Coverage
Asheville Regulatory Field Office Alexander Cherokee Iredell Mitchell
US Army Corps of Engineers Avery Clay Jackson Polk
151 Patton Avenue Buncombe Cleveland Lincoln Rowan
Room 208 Burke Gaston Macon Rutherford
Asheville, NC 28801-5006 Cabarrus Graham Madison Stanley
Telephone: [phone] Caldwell Haywood McDowell Swain
Fax: [phone] Catawba Henderson Mecklenburg Transylvania
Raleigh Regulatory Field Office Alamance Durham Johnston Rockingham
US Army Corps Of Engineers Alleghany Edgecombe Lee Stokes
6508 Falls of the Neuse Road Ashe Franklin Nash Surry
Suite 120 Caswell Forsyth Northampton Vance
Raleigh, NC 27615 Chatham Granville Orange Wake
Telephone: [phone] Davidson Guilford Person Warren
Fax: [phone] Davie Halifax Randolph Wilkes
Washington Regulatory Field Office Beaufort Currituck Jones
US Army Corps Of Engineers Bertie Dare Lenoir
Post Office Box 1000 Camden Gates Martin
Washington, NC 27889-1000 Carteret* Green Pamlico
Telephone: [phone] Chowan Hertford Pasquotank
Fax: [phone] Craven Hyde Perquimans
Wilmington Regulatory Field Office Anson Duplin Onslow
US Army Corps Of Engineers Bladen Harnett Pender
Post Office Box 1890 Brunswick Hoke Richmond
Wilmington, NC 28402-1890 Carteret Montgomery Robeson
Telephone: [phone] Columbus Moore Sampson
Fax: [phone] Cumberland New Hanover Scotland
Pitt
Tyrrell
Washington
Wayne
Union
Watauga
Yancey
Wilson
Yadkin
*Croatan National Forest Only
Page 12 of 13
US Fish and Wildlife Service / National Marine Fisheries Service
US Fish and Wildlife Service US Fish and Wildlife Service National Marine Fisheries Service
Raleigh Field Office Asheville Field Office Habitat Conservation Division
Post Office Box 33726 160 Zillicoa Street Pivers Island
Raleigh, NC 27636-3726 Asheville, NC 28801 Beaufort, NC 28516
Telephone: [phone] Telephone: [phone] Telephone: [phone]
Division of Water Quality
401 Wetlands Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
Telephone: [phone]
Fax: [phone]
North Carolina State Agencies
Division of Water Quality
Wetlands Restoration Program
1619 Mail Service Center
Raleigh, NC 27699-1619
Telephone: [phone]
Fax: [phone]
State Historic Preservation Office
Department Of Cultural Resources
4617 Mail Service Center
Raleigh, NC 276994617
Telephone: [phone]
Fax: [phone]
CAMA and NC Coastal Counties
Division of Coastal Management Beaufort Chowan Hertford Pasquotank
1638 Mail Service Center Bertie Craven Hyde Pender
Raleigh, NC 27699-1638 Brunswick Currituck New Hanover Perquimans
Telephone: [phone] Camden Dare Onslow Tyrrell
Fax: [phone] Carteret Gates Pamlico Washington
NCWRC and NC Trout Counties
Western Piedmont Region Coordinator Alleghany Caldwell Watauga
3855 Idlewild Road Ashe Mitchell Wilkes
Kernersville, NC 27284-9180 Avery Stokes
Telephone: [phone] Burke Surry
Mountain Region Coordinator Buncombe Henderson Polk
20830 Great Smoky Mtn. Expressway Cherokee Jackson Rutherford
Waynesville, NC 28786 Clay Macon Swain
Telephone: [phone] Graham Madison Transylvania
Fax: [phone] Haywood McDowell Yancey
Page 13 of 13
11-29-2001 01:11pm From-CREEDUOOR PARTNERS LLC
9195711521 T-398 P-002/002 F-684
Soil & Environmental Consultants, PA
11010 Rzv w Rlp Road • RxIeW Noah CamUm 27614 • Phow. (91918463900 • Ail: [phone]
AUMOMAMN FORM
Ali B1aks To Be Filled In Bp The Current L.aitdowAer
Name: C
Address:
'?iZQQ. LANc?
ProjeaNamne/Dewtlptim SW
Date: _U125 1 01 -
The Department of dw Amoy
U.S. Army Corps of Brigmeem, Wi um%tm District
P.O. Box 1890
w9 mingtorl, NC 28402
Attn: fj.*ANDIf ??uEs
Field Office: ?LLP XG
F.e: Wedands Related Consulting and Pemdtting
To Whom It May Canceni:
I, the current owner, hereby desig mte and audio= Sod 6c Envu=Mientl d Consultants, P,A. to
act in my behalf as my agent in the processing of pemdt applications, t0 faaiillih upon requestjj
supp]ewnxtai Worm bon in support of applications, etc. from ttds day forward. The day of
This =wti5catimi supavedes any previous con"pondence eoncmiing the agent for this projwL
NOTICE: This aa?on, for liability lad profeesioaal courtesy reasom, is valid only for
gove rament officials to enter the Property when aacompaaied by 9"C staff You mould call. S&EC
to arrange a site meeting prior to v dit the dfe.
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cc: Mr. john Dorfley
NCDENR - DWQ
2421 Crabtree Boulevard
Raleigb, NC 276M
$ Si tore
cc: Mr. Kevin Martin
Sod & EmViloxtay"Jaxtal Consultants, PA
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Mgr.: SC HASENTREE
Waterford LLC
Wake County, NC
Soil & Environmental Consultants, PA
11010 Raven Ridge Rd.u Raleigh, NC 27614
[phone] 0 [phone]
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Figure 2 -Wake County
Project
Mgr.: Sc Date:
11129101 Soil Survey site vicinity map
HASENTREE
Waterford LLC
Wake County, NC
Sheets 8 and 9
Soil & Environmental Consultants, PA
11010 Raven Ridge Rd.0 Raleigh, NC 27614
[phone] u [phone]
Web Page: www.SandEC.com
State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
D
OCT 1 2 ?P00 /
AM
E N R
October 6, 2000
DWQ# 00-1061
Wake County
Louis Dickerson
P.O. Box 19808
Raleigh, NC, 27619
APPROVAL of 401 Water Quality Certification and Additional Conditions
Dear Mr. Dickerson:
You have our approval, in accordance with the attached conditions, to place fill in 0.07787 acre of wetlands and 357 linear
feet of streams to construct the Hasentree Subdivision in Wake County, as you described in your application received by the
Division of Water Quality on August 11, 2000. After reviewing your application, we have determined that this fill is covered
by General Water Quality Certification Numbers 3287 and 3289. This Certification allows you to use Nationwide Permit
Numbers 39 and 14 when issued by the U.S. Army Corps of Engineers. In addition, you should get any other federal, state or
local permits before you go ahead with your project including (but not limited to) Sediment and Erosion Control, Non-Discharge
and Water Supply Watershed regulations. Also this approval will expire when the accompanying 404 permit expires unless
otherwise specified in the General Certification.
This approval is only valid for the purpose and design that you described in your application. If you change your project,
you must notify us and you may be required to send us a new application for a new certification. If the property is sold, the new
owner must be given a copy of the Certification and approval letter and is thereby responsible for complying with all conditions.
If total wetland fills for this project (now or in the future) exceed one acre, compensatory mitigation may be required as
described in 15A NCAC 2H .0506 (h). For this approval to be valid, you must follow the conditions listed in the attached
certification and the additional condition listed below.
1. Deed restrictions or similar mechanisms shall be placed on all remaining jurisdictional wetlands and waters or areas within 50 fe(
of all streams and ponds in order to assure compliance for future wetland and/or water impact. These mechanisms shall be put in
place within 30 days of the date of this letter or the issuance of the 404 Permit (whichever is later). A sample deed notification c,
be found on our web site at hna•//tt2o ear state ac us/acwetlands .
If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You must act
within 60 days of the date that you receive this letter. To ask for a hearing, send a written petition conforming to Chapter 150B
of the North Carolina General Statutes to the Office of Administrative Hearings, P.O. Box 27447, Raleigh, N.C. 27611-7447.
This certification and its conditions are final and binding unless you ask for a hearing.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If you have
any questions, please telephone John Dorney at 919-733-9646.
Sincerely,
Kerr T. Stevens
d1_111_1 Non-Discharge Branch • 1621 Mail Service Center Raleigh, North Carolina 27699-1621
Telephone [phone] FAX # [phone]
An Equal Opportunity Affirmottve Action Employer 50% recycled/10% post consumer paper
Attachment
cc: Corps of Engineers Raleigh Field Office
Raleigh DWQ Regional Office
Central Files
File Copy
Sean Clark, S&EC, 11010 Raven Ridge Road, Raleigh, NC, 27614
001061
U x
U.S. ARMY CORPS OF ENGINEERS
Wilmington District
Action ID: 200021632 / 200021633 County: Wake
GENERAL PERMIT (REGIONAL AND NATIONWIDE) VERIFICATION
Property
Owner Louis Dickerson
Address P.O. Box 19808
Raleigh, NC 27619
Telephone Number 919-676-9790
Authorized
Agent Soil & Environmental Consultants, Inc.
Attn: Sean Clark
Address 11010 Raven Ridge Road
Raleigh, NC 27614
Telephone Number 919-846-5900
Size and Location of Property (waterbody, Highway name/number, town, etc.): This property is
located northeast of the intersection of NC Highway 98 and Stony Hill Road (SR 1917) west of Wake
Forest, in Wake County, North Carolina. The site is adjacent to Lowery Creek and Pierce Creek, above
headwaters, in the Neuse River Basin.
Description of Activity: This permit authorizes mechanized landclearing, excavation, the installation of
pipes, and the placement of fill associated with the construction of Hasentree subdivision. Impacts to
wetlands and waters authorized by this permit include 252 feet of intermittent, unimportant channel for
two road crossings under NWP 14 (AID 200021632), and 0.04 acre of wetland and 105 linear feet of
channel for two road crossings and riprap stabilization under NWP 39 (AID 200021633). Impacts to
wetlands and waters total 0.079 acres.
Applicable Law: X Section 404 (Clean Water Act, 33 USC 1344) only.
Section 10 (River and Harbor Act of 1899) only.
Authorization: Regional General Permit Number
14 & 39 Nationwide Permit Number(s)
Any violation of the conditions of the Regional General or Nationwide Permit referenced above may
subject the permittee to a stop work order, a restoration order, and/or appropriate legal action.
This Department of the Army Regional General Permit or Nationwide Permit verification does not
relieve the permittee of the responsibility to obtain any other required Federal, State, or local
approvals/permits. The permittee may need to contact appropriate State and local agencies before
beginning work. If you have any questions regarding the Corps of Engineers regulatory program,
please contact Todd Tugwell at telephone number (919) 876 - 8441 extension 26
Regulatory Project Manager Signature
Date August 31, 2000 Expiration Date August 31, 2002
SURVEY PLATS, FIELD SKETCH, WETLAND DELINEATION FORM, ETC., MUST BE ATTACHED
TO THE YELLOW (FILE) COPY OF THIS FORM, IF REQUIRED OR AVAILABLE.
CF:

otVALF9 Michael F. Easley
` G r Governor
f ?U ??
7 OCT W(Itilm G. Ross, Jr., Secretary
r Department of Environment and Natural Resources
1
f7 "C _-Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
October 12, 2001
Wake County
DWQ # 00-0781
Soil and Environmental Consultants, Inc. (S&EC, Inc.)
Attn: Mr. Sean Clark
11010 Raven Ridge Road
Raleigh, NC 27614
919-846-9467(fax)
Subject Property: Site Determination for Applicability to the Neuse River Basin Riparian Area Protection Rules
[ 15A NCAC 2B .0233(3)(a)]
Highway 98 Property - 576-acre tract - Hasentree Project
S&EC, Inc. Project No. 98-4261
Water Fork [03-04-01; 27-16.5-(1)], Pierce Creek [03-04-01; 27-16.5-1-(1&2)],
Lowery Creek [03-04-01, 27-16.7-(1)]
Dear Mr. Clark,
On October 12, 2001, I met with you to conduct an on-site determination to review a drainage feature on the subject property
for applicability to the Neuse River Buffer Rules [15A NCAC 2B .0233(3)(a)]. As a result of this on-site determination the Division
of Water Quality (DWQ) has determined that the attached map initialed by me on 10/12/01 accurately approximates the origin of the
intermittent stream ("I"') subject to the Neuse Buffer Rules (North Carolina Administrative Code T15A:02B.0233) as determined by
the undersigned on October 12, 2001. This origin determination shall replace the one indicated on the previously approved map
provided to you within the "Neuse River Riparian Buffer Confirmation" letter dated June 13, 2000. Other subject surface waters were
determined to exist within the property boundary as indicated within the "Neuse River Riparian Buffer Confirmation" letter to you
dated June 13, 2000. These buffers begin at the most landward limit of the top of bank and extend landward a distance of 50 feet on
all sides of the subject surface waters, measured horizontally on a line perpendicular to the subject surface waters.
This letter only addresses the applicability to the buffer rules and does not approve any activity within the buffers. Please be
aware that even if no direct impacts are proposed to these protected buffers, diffuse flow of all stormwater as per 15A NCAC 2B
.0233(5) is required. If you have any additional questions or require additional information you can reach me at 919-733-9726.
Sincerely,
Bob Zarzecki, ESIII
DWQ, 401 Wetlands Unit
Attachment: S&EC, Inc. Sketch Map Initialed by Bob Zarzecki on 10/12/01
NCDWQ Stream Classification Form dated 10-12-01
Cc: Mr. Steve Mitchell, DWQ Raleigh Regional Office
File Copy
Central Files
DWQ 000781
North Carolina Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
919-733-1786 (phone), 919-733-6893 (fax), httpJ/h2o.enr.state.nc.us/ncweflands/
10/12/2
4•?

r
r ?,r
Reviewed By S&EC
Noi'tt; Ciarc!'il
Pdanagemoni Gomm'Oon
Division Of Water Quality
For /esd' Bann Buffer

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46 ?6G S,-7z H /VAP
Arucz # 00 -679/
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PAGE 02
,, ii .y ,' 1??
NCDWO Stream Chissificntion Form
PrnJet:t Name: ??r2e. free River Basin: Ne..? County: Ll kc. Evaluator. [jZ
DWQ PmJect Number. W, 0-4&1 Nearest Named Stream: 'V?;e„*,, CI Latitude: Signature:
10.42•ol ?•
Date: USGS QUAD: Longitude: Locution/Directions:
*PLEASE NOTE: if evaluator and landowner agree that the feature Is antan-made ditch, then use of thisfona Is not necessary. Bey µi1 ?'
Also, tlht the best professlonatJudgentent of the evaluator, the feature is a Ivan-made ditch and not a mod(lfed natural stream-this Fri 1 A
rating system should not be used* O -W, ; 470
: u rl?ICen..•? • erHe.,o.?
Primary Field IndiCatOrS: (CirrleOneMember PerUne) ? s )>OWNlTRiA??•inlTEenrnrNT
1. Ceomo hold Absent Weak Moderate Strnn
I) Is Thert) A Riffle-Pool Seouence? 0 I 2 3
2) Is The USDA Texture In Sireambed
0 (1) 2
t 0
4) Is The Channel Sinuous? L 3
i) is There An Active (Or Relic) '.
t) is A Continuous Bed & Bank Present? 0 1 2 3
"'&' d am__nk Cnurrd nv DIaA r? Aruf IVCCI1011T Shmosity 7hen Srarr-0s)
r
A 2 Order Or Greater Channel (As Indicated
On TQR.aManAnd/Or in Field) Present? Yes=3 av.,=r ?
RIMARYG 'OMORI'110LOGYINDICAIOR I'OIN7S:
1. Hvdroloev Absent Weak Moderate Strong
) Is There A Groundwater
Iow/Dischar a <. 2
'RIMARY HYDROLOGY INDICATOR POINTS: O n><wx?
E-4 geJ -Z. 6145 4A laeslrsc? .
11. Ilioloev Absent Weak Moderate Strone
'RIMARY BIOLOGY INDICATOR POINTS:
eeondarV Field Indicators: (OrrleOn,ManberPerUne)
_ _ ___ cr me Olfl/l
Is There A Head t
Cut Present In Channel? 0
Is There A Grote Control Point In hannel? 11
5 )
Does.Topography Indicate A
Itural Drainage Wav? 0 5 )
:CONDARY GEOMORPHOLOGY INDICATOR POINTS:?
Hvdroloev Absent Weak Moderate Strone
Is This Years (Or Last's) Leoflitter
Present In Sireambed? 1.5 5
Is Sediment On Plants (Or Debris) Present? 0 5 15
Art Wrack Lines Present? (1 ?5 75
Is Water In Channel And >48 Hrs. Since 0 .5 1 1.5
It, #9glboyrskh /" /
Is There Water In Channel During Dry 0 .5 1 1.5
nditions Or In Growing Season)?
51e Iiydric Soils Present In Sides Of Channel (Or In Ilen tcut)? Y = S -
'CONDARY HYDROLOGY INDICATOR POINTS: I.5
1s
- ?••--•••?? • Or.T musuy Uut, mostly bACW Mostly FAC Mosfl? FACU Mostly Ul'L
'07W.- ((7btmt Absenr'e OJAll Plana In Snrmmtl'r•rl 2 1 .75 .5 ! rl\ 0
4mrd Ab(,ve Skln Tidy Sten VNl r: SS SA V 1'rrvmNl ?JJ
^ONDARY BIOLOGY INDICATOR POINTS: O
)TAI, POINTS (Prinmry + Secnlulnr),
)= 1 (IjGreater Than Or F-qual To 19 Points The Stream Is At Least Intennitterrt)
State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Gove
Bill Holman, Secretary
Kerr T. Stevens, Director
e??
10 NCDENR
R NORTH CAROLINA DEPARTMENT OF
NVIRONMENT AND NATURAL RESOURCES
June 13, 2000
DWQ Project # 00-0781
NBRRO Project # 00-156
Wake County
Soil & Environmental Consultants, Inc.
C/o Mr. Sean Clark
11010 Raven Ridge Road
Raleigh, NC 27614
Re: Neuse River Riparian Buffer Confirmation
Highway 98 Property - 576 Acre Tract
S&EC, Inc. Project # 98-4261
Water Fork [03-04-01; 27-16.5-(1)]; Pierce Creek [03-04-01; 27-16.5-1-(1&2)]
Lowery Creek [03-04-01; 27-16.7-(1)]
Dear Mr. Clark,
Per your request, on May 5, 2000, I met with you at the subject property located northeast of the
intersection of SR 1917 and SRI 921, on either side of SR 1920 (Frank Bailey Road) and north of Highway
98, Wake County. The purpose of this meeting was to determine the applicability of stream features
located on the property to the Neuse River Riparian Buffer Protection Regulations (15A NCAC 2B .0233).
As a result of this meeting, it was determined that the features indicated on the attached "Detailed Soils /
Site Suitability Evaluation and Preliminary Wetlands Evaluation" map received by this office on 5/30/00
and initialed by me on 6/13/00 are subject to 15A NCAC 2B .0233. The map indicates streams, including
the approximate location of the start of several intermittent streams (locations "A to S"), subject to the
buffer regulations as confirmed and flagged in the field on 515100. This office recommends that these
streams be properly located and identified prior to any site design to ensure compliance with 15A NCAC
2B .0233.
This letter only addresses the applicability of 15A NCAC 2B .0233(3) and does not authorize any activity
within the protected buffers. 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 me at 733-9726 or Mr. Steve
Mitchell at 5714700.
al
rzecki
Environmental Specialist / 401 Certification Unit
Cc: Steve Mitchell / Raleigh Regional Office
Division of Land Quality / Raleigh Regional Office
File copy
Non-Discharge Branch Wetlands/401 Unit 1621 Mail Service Center Raleigh, North Carolina 27669-1621
Telephone [phone] FAX # [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post consumer paper
Delineation Performed by: Soil & Environmental Consultants, Inc.
244 West Millbrook Road 231 16th Avenue NE
Raleigh, NC 27609 Hickory, NC 28601
Phone: [phone] Phone: [phone]
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Hasentree / Project # 99-4261up2 Date: 10-17-01
Applicant/Owner: Sandman & Dickerson County: Wake
Investigator: Sean Clark State: North Carolina
Do normal circumstances exist on the site? Yes Community ID: Mixed Pine-Hardwood Forest
Is the site significantly disturbed
(Atypical situation)? No Transit ID:
Is the area a potential problem area? No Plot ID: taken in floodplain of Water Fork Creek
(If needed, explain on reverse.) on the proposed flooded side of the dam
VEGETATION
Dominant Plant Species Stratum Indicator
1. Acer saccharum Tree FACU-
2. Liquidambar styraciflua Tree FAC+
3. Quercus alba Tree FACU
4. Quercus rubra Tree FACU
5. Fagus grandifolia Tree FACU
6. Cornus florida Tree FACU
7. Pinus taeda Tree FAC
8. Lonicera japonica Vine FAC-
Dominant Plant Species
9. Gelsimium sempervirens
10.
11.
12.
13.
14.
15.
16.
Stratum Indicator
Vine FAC
Percent of dominant species that are OBL, FACW or FAC (excluding FAG): 33.33%
Remarks:
HYDROLOGY
Recorded Data (describe in remarks)
Stream, Lake or Tide Gauge
Aerial Photographs
Other
X No recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to Free Water in Pit:
Depth to Saturated Soil:
Remarks:
Wetland Hvdroloev Indicators:
Primary Indicators:
Inundated
Saturated in Upper 12 Inches
Water Marks
Drift Lines
Sediment Deposits
Drainage Patterns in Wetlands
Secondary Indicators: (2 or more required)
Oxidized Root Channels in
Upper 12 Inches
Water-Stained Leaves
Local Soil Survey Data
FAC Neutral Test
Other (explain in remarks)
(in.)
>24 (in.)
>24 (in.)
SOILS
Wl-data.trm
Map Unit Name
(Series and Phase):
Taxonomy (Subgroup):
Chewacla
thermic Fluvaquentic
Drainage Class: somewhat poorly drained
Field Observations
Confirm Mapped Type?
Profile Description:
Depth Matrix Color Mottle Colors Mottle
(ins. Horizon (Munsell Moist) (Munsell Moist) Abundance/Contrast
0-12 A IOYR 4/4
12-14+ B IOYR 5/3
Hydric Soil Indicators:
Histosol
Histic Epipedon
Sulfidic Odor
Aquic Moisture Regime
Reducing Conditions
Gleyed or Low Chroma Colors
Remarks: No indicators
Texture. Concretions,
Structure etc.
sandy clay loam
sandy clay loam
Concretions
High Organic Content in Surface Layer in Sandy Soil
Organic Streaking in Sandy Soils
Listed on Local Hydric Soils List
Listed on National Hydric Soils List
Other (explain in remarks)
Wetland Determination
Hydrophytic Vegetation Present? No
Wetland Hydrology Present? No
Hydric Soils Present? No
Is This Sampling Point Within a Wetland? No
Remarks:
WLdata.frm
Delineation Performed by: Soil & Environmental Consultants, Inc.
244 West Millbrook Road 231 16th Avenue NE
Raleigh, NC 27609 Hickory, NC 28601
Phone: [phone] Phone: [phone]
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Hasentree / Project # 99-4261wf Date: 06-2540
Applicant/Owner: Sandman & Dickerson County: Wake
investigator: Sean Clark State: North Carolina
Do normal circumstances exist on the site? Yes Community ID: Bottomland Hardwood
Is the site significantly disturbed
(Atypical situation)? No Transit ID:
Is the area a potential problem area? No Plot ID: wetlands
(If needed, explain on reverse.)
VEGETATION
Dominant Plant S es Stratum Indicator
1 Acer rubrum Tree FAC
21iridendron tulipifera Tree FAC
3. Woodwar&a areolata Herb OBL
4-Ugustrum sinense Shrub FAC
5.Magnolia vfrgfnica Tree FAC
6.Smilax rotundifolia vine FAC
7.Toxicodendron radicans Vine FAC
8.Sambucus canadensis Shrub FACW-
Dominant Plant Snecies
9. Lindera benzoin
103oehmeria cylin&lca
11Juncus e, ffusus
12.
13.
14.
15.
16.
Stratum Indicator
Shrub FACW
Herb FACW+
Herb FACW+
Percent of dominant species that are OBL, FACW or FAC (excluding FAC-): 100%
Remarks:
HYDROLOGY
Recorded Data (describe in remarks)
Stream, Lake or Tide Gauge
Aerial Photographs
Other
X No recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to Free Water in Pit:
0-1 (in.)
0-10- (in.)
Depth to Saturated Soil:
Remarks:
0-10_ (in.)
Wetland Hvdroloty Indicators:
Primary Indicators:
X Inundated
X Saturated in Upper 12 Inches
Water Marks
X Drift Lines
Sediment Deposits
X Drainage Patterns in Wetlands
Secondary Indicators: (2 or more required)
X Oxidized Root Channels in
Upper 12 Inches
X Water-Stained Leaves
Local Soil Survey Data
FAC Neutral Test
Other (explain in remarks)
A/I J-l- -
SOILS
Map Unit Name
(Series and Phase):
Taxonomy (Subgroup):
Worsham sandy loam
Typic Ochraquults
Drainage Class: Poorly
Field Observations
Confirm Mapped Type? No
Profile Description:
Ih Matrix Color Mottle Colors Mottle Texture. Concretions,
in . Horizon (Munsell Moist) (Mansell Moist) Abundance/Contrast Structure etc.
0-7 A 10YR 511 sandy loam
7-12 E 10YR 6/1 sandy loam
Hvdric Soil Indicators:
Histosol Concretions
Histic Epipedon High organic content in Surface Layer in Sandy Soil
Sulfidic Odor . Organic Streaking in Sandy Soils
X Aquic Moisture Regime X Listed on Local Hydric Soils List
X Reducing Conditions X Listed on National Hydric SO& List
X Gleyed or Low-Chroma Color Other (explain in remarks)
Remarks:
Wetland Determination
Hydrophytic Vegetation Present? Yes
Wetland Hydrology Present? Yes
Hydric Soils Present? Yes
Is This Sampling Point Within a Wetland? Yes
Remarks:
%A/1 ? -,- L--
Delineation Performed by: Soil & Environmental Consultants, Inc.
244 West Millbrook Road 231 16th Avenue NE
Raleigh, NC 27609 Hickory, NC 28601
Phone: [phone] Phone: [phone]
DATA FORM
ROUTINE WETLAND DETERNIINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Hasentree / Project # 99-4261up Date: 06-25-00
Applicant/Owner: Sandman & Dickerson County: Wake
Investigator: Sean Clark State: North Carolina
Do normal circumstances exist on the site? Yes
Is the site significantly disturbed
(Atypical situation)?
Is the area a potential problem area?
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species btu Indicator
1. Acer rubrum Tree FAC
2. Llrldendron tulipifera Tree FAC
3. Quercus alba Tree FACU
4. Evorrymus Americana Shrub FAC-
5. Fagus gran&folia Tree FACU
6. Comus,/lorida Tree FACU
7. Smilax rotun&folia Vine FAC
8. Tipularia discolor Herb FACU
Community ID: Mixed Pine-Hardwood Forest
No Transit ID:
No Plot ID:
Dominant Plant SMes Stratum Ind o1_r
9. Polyslichum acrostfcoid. Herb FAC
10. Pinus taeda Tree FAC
11.Oxydendrum arboreum Tree FACU
12.
13.
14.
15.
16.
Percent of dominant species that are OBL, FACW or FAC (excluding FAC-): 45%
Remarks:
HYDROLOGY
Recorded Data (describe in remarks)
Stream, Lake or Tide Gauge
Aerial Photographs
Other
X No recorded Data Available
Field Observations:
Depth of Surface Water: 0 (in.)
Depth to Free Water in Pit: >24 (in.)
Depth to Saturated Soil: >24 (in.)
Remarks:
Wetland Hvdrolop-v Indicators:
Primary Indicators:
Inundated
Saturated in Upper 12 Inches
Water Marks
Drift Lines
Sediment Deposits
Drainage Patterns m Wetlands
Secondary Indicators: (2 or more required)
Oxidized Root Channels in
Upper 12 Inches
Water-Stained Leaves
Local Soil Survey Data
FAC Neutral Test
Other (explain in remarks)

SOILS
Map Unit Name
(Series and Phase): Cecil sandy loam Drainage Class: well
Field Observations
Taxonomy (Subgroup): Typic Kanhapludults Confirm Mapped Type? Yes
Profile Description:
pwih Matrix Color Mottle Colors Mottle Texture. Concretions.
(vim) Horizon (Munsell Moist) (Mansell Moist) AbundancelContrast Structure etc.
0-6 Ap 7.5YR 4/4 sandy loam
6-13 Bt 7.5YR 4/4 clay
jb?ddc Soil indicators:
Histosol Concretions
Histic Epipedon High organic content in surface Layer in Sandy Soil
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: No indicators
Wetland Determination
Hydrophytic Vegetation Present? No
Wetland Hydrology Present? No
Hydric Soils Present? No
Is This Sampling Point Within a Wetland? No
Remarks:
%X I/ J-.- L__
HASENTREE
Buffer Mitigation Calculations
Zone 1
Pierce Creek
BI4 + BI5 + Crossing 4 + BI 12 + BI4 =
(900 ft2) + (900 ft2) + (10,712 ft) + (900 ft2) + (900 ft2) = 14,312 ft2
(0.0207 ac) + (0.0207 ac) + (0.2470ac) + (0.0207 ac) + (0.0207 ac) = 0.3286 ac
Water Fork Creek
BI9 + Crossing 5 + BI9 + BI15 + BI19 + Crossing 7 =
(900 ft2) + (10,483 ft) + (900 ft2) + (900 ft2) + (900 ft2) + (6,732 ft2) = 20,815 ft2
(0.0207ac) + (0.2407ac) + (0.0207ac) + (0.0207ac) + (0.0207ac) + (0.1546ac) = 0.4779 ac
Zone 2
Pierce Creek
BI4 + BI5 + Crossing 4 +
(600ft) + (600ft) + (6,067ft2)
BI12 + BI4 =
+ (600ft2) + (600ft2) = 8,467ft2
(0.0138ac) + (0.0138ac) + (0.1370ac) + (0.0138ac) + (0.0138ac) = 0.1944 ac
Water Fork Creek
BI9 + Crossing 5 + BI9 + BI15 + BI19 + Crossing 7 =
(600ft2) + (6,412ft2) + (600ft2) + (600ft) + (600ft2) + (5,502ft2) =14,314ft2
(0.0138ac) + (0.1472ac) + (0.0138ac) + (0.0138ac) + (0.0138ac) + (0.1263ac) = 0.3286 ac
Required Mitigation for Zone 1 Total = 35,127 ft2 (0.8064 ac)
Required Mitigation for Zone 2 Total = 229781 ft2 (0.5230 ac)
Group, inc.
LAND USE EVALUATION
CIVIL ENGINEERING
CONSTRUCTION MANAGEMENT
November 13, 2001
Sean Clark
Soil & Environmental Consultants, Inc.
11010 Raven Ridge Road
Raleigh, North Carolina 27615
RE: Hasentree Stream / Wetland Impacts, Wake County, NC
Dear Sean:
The following information is attached for your use:
5 Sets Wetland Impact Summary
5 Sets Site Impact Map ( 4 pages )
5 Sets Individual Impact Maps ( 9 total ) with supporting calculations
5 Sets Storage Calailations for Sizing Irrigation Pond
5 Sets Pedestrian Trail Details
We have maintained the existing channel impact for Crossings 1 through 4, which have been previously
permitted In addition to the Neuse River Buffer and County Dramageway Buffer requirements, we have added
an additional 50' Conservation Buffer outside of the Neuse River Buffer along the major streams within the
project. This additional buffer will be left undist abed with the exception of the pedestrian / cart trail system as
depicted upon the Site Impact Map.
The Site Impact Map also depicts proposed pedestrian / cart bridge crossings within the Neuse River Buffers. All
crossings are perpendicular to the stream. With timber bridges located at the specific creek and water crossings.
The overall trail system will be located outside of the Neuse River Buffer with the exception of perpendicular
stream crossings.
The proposed plan provides for up to 393 residential lots and an 18 hole golf course. A prior master plan has
been approved by County allowing for up to 413 residential lots.
If you should require additional hilormation, please feel free to contact this office.
Sincerely,
M?
Mark ?ess, PE
Enclosures
cc: Terry Stephens, PE, Creedmoor Partners
Steve Levitas, Esquire
1051 Pemberton Hill Road, Suite 201 - Apex, N.C. 27502
voice (9 19) 3G7-8790 - fax [phone] I - emanl [e-mail]
HASENTREE
Neuse River Buffer / Wetland Impact Summary
Wake County, N.C.
Previously Permitted Impacts
Crossing# 1 (Important / Perennial / Buffered) (Previously Permitted)
Wetland Impact 1,140 s.f. (0.026 Ac.)
Channel Impact length(includes 321.f. of dissipater) 105 IS.
Zone 1 Impact
Zone 2 Impact
Total Buffer Impact
Nationwide Permit used
3,578 s.f.
5,144 s.f.
8,722 s.f. (0.2002 Ac.)
NWP 39
Crossing #2 (Unimportant / Intermittent / Unbuffered) (Previously Permitted)
Wetland Impact (unimportant channel only) 1,004 s.f. (0.023 Ac.)
Channel Impact length(includes 201.f. of dissipater) 85 l.f.
Zone 1 Impact N/A
Zone 2 Impact N/A
Total Buffer Impact N/A
Nationwide Permit used NWP 39
Crossing ##3 (Important / Perennial / Buffered) (Previously Permitted)
Wetland Impact 0 s.f. (0 Ac.)
Channel Impact length(includes 441.f. of dissipater) 108 IS.
Zone 1 Impact
Zone 2 Impact
Total Buffer Impact
Nationwide Permit used
6,776 s.f.
4,100 s.f.
10,876 s.f. (0.2497 Ac.)
NWP 14
Crossing #4 (Important / Perennial / Buffered) (Previously Permitted)
Wetland Impact 0 s.f. (0 Ac.)
Channel Impact length(includes 501.f. of dissipater) 1441.f.
Zone 1 Impact
Zone 2 Impact
Total Buffer Impact
Nationwide Permit used
10,712 s.f.
6,067 s.f.
16,779 s.f. (0.3852 Ac.)
NWP 14
2
Proposed Impacts
Crossing #5 (Important / Perennial / Buffered)
Wetland Impact 0 s.f. (0 Ac.)
Channel Impact length(includes 631.f. of dissipater) 195 IS.
Zone I Impact 10,483 s.f.
Zone 2 Impact 6,412 s.f.
Total Buffer Impact 16,895 s.f. (0.3879 Ac.)
Nationwide Permit requested NWP 39
Impact #6 (flooding of channels for irrigation lake)
Wetland Impact 0 s.f. (0 Ac.)
Channel Impact (Important / Perennial / Buffered) 1,9021.f.
Channel Impact (unimportant / intermittent / buffered) 9881.f.
Total Channel Impact length 2,8901.f.
Zone 1 Impact 80,140 s.f.
Zone 2 Impact 155,047 s.f.
Total Buffer Impact 235,187 s.f. (5.3992 Ac.)
Nationwide Permit requested NWP 39
*Buffers will be reestablished around the proposed irrigation lake
Crossing #7 Open Bottom Arch Culvert (see attached plans)
Wetland Impact 0 s.f. (0 Ac.)
Channel Impact length 0 l.f.
Zone 1 Impact 6,732 s.f.
Zone 2 Impact 5,502 s.f.
Total Buffer Impact 12,234 s.f. (0.2809 Ac.)
Nationwide Permit requested N/A
Crossing #8 Open Bottom Arch Culvert (see attached plans)
Wetland Impact 0 s.f. (0 Ac.)
Channel Impact length 0 l.f.
Zone 1 Impact 2,906 s.f.
Zone 2 Impact 2,226 s.f.
Total Buffer Impact 5,132 s. f. (0.1178 Ac.)
Nationwide Permit requested N/A
Impact #9 (Unimportant / Intermittent / Unbuffered)
Wetland Impact (unimportant channel only) 434 s.f. (0.010 Ac.)
Channel Impact length(includes 121.f. of dissipat er) 53 l.f.
Area of intermittent, unimportant channel 312 ft2
Zone 1 Impact N/A
Zone 2 Impact N/A
Total Buffer Impact N/A
Nationwide Permit requested NWP 39
f•
IMPERVIOUS CALCULATION- HASENTREE
Dec. 18, 2001
R-80W (Watershed) Impervious
Impervious
Lots Area Total
141 9,000 s.f. 1,269,000 s.f.
Item
1 Houses
2 Roadways
3 WWTP
4 Golf Maintenance
5 Club House
6 Sidewalks
7 Water Tank
8 Pedestrian Trail
9 Golf Course Trail
Impervious
Area
1,269,000 s.f.
355,314 s.f.
- s.f.
- s.f.
- s.f.
29,100 s.f.
- s.f.
104,000 s.f.
102.344 s.f.
TOTAL IMPERVIOUS 1,859,758 s.f.
R-80W Tract Area - 306.40 Acres
Impervious % - 13.9%
R-40W (Watershed) Impervious
Impervious
Lots Area
Total
252
Item
1 Houses
2 Roadways
3 WWTP
4 Golf Maintenance
5 Club House
6 Sidewalks
7 Water Tank
8 Pedestrian Trail
9 Golf Course Trail
6,000 s.f
Impervious
Area
1,512,000 s.f.
471,146 s.f.
43,560 s.f.
87,120 s.f.
174,240 s.f.
43,340 s.f.
43,560 s.f.
156,000 s.f.
157,656 s.f.
TOTAL IMPERVIOUS 2,688,622 s.f.
1,512,000 s.f.
R-40W Tract Area - 416.22 Acres
Impervious % - 14.8%
TOTAL TRACT AREA - 722.62 acres
OVERALL IMPERVIOUS AREA - 4,548,380 s.f.
OVERALL IMPERVIOUS % - 14.4%
f
TOTAL SITE ACREAGE SUMMARY
RESIDENTIAL LOTS - 283.5 Acres 39%
ROAD RIGHT-OF-WAY 52.67 Acres 7%
NON-RESIDENTIAL (Clubhouse, Amenitity 21.5 Acres 3%
Utility, etc.)
OPEN SPACE - 365.0 Acres 51%
Undisturbed - 180.0 ac. (49%)
Recreational/Golf/Ponds - 185 ac. (51%)
TOTAL SITE ACREAGE - 722.62 Acres 100%
15'
WIDE
2' A5PHALT
v GRAVEL
PEDESTRIAN TRAIL SECTION
NT5
15' CLEARING LIMIT
WIDE

?0

TREATED TIMBERS
81-O" O.C. (")
PEDESTRIAN TRAIL SECTION
@ WETLAND CR055ING
NT5
i;olRod CON5TR',UCTION MANAGEMENT
RAmsk NC 27614 1031 F&MmrWn MAN Road. 3u*a 201. Apc. N.C. 27502
f im (919) 8445900 vows [phone]- far [phone]
Group, inc.
LAND USE EVALUATION
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CROSSING #1
DRAINAGE AREA = 31.89 Ac.
Time of Concentration - Kirpich Equation
3 0.385
Tc= (L/ H )

L = Length of Travel
H = Height of most remote point
Drainage Area = 31.89 Ac.
Channel Flow
Elevation of most remote point, (1-11) = 413.9 feet
Elevation of point of design, (1-12) = 345 feet
Length of travel, (L) = 1765 feet
Mutt factor = 1
Time of Concentration, (Tc) _> 8.61 minutes
Intensity, (1-10yr) = 6.37 inches/hr
Intensity, (1-25yr) = 7.34 inches/hr
Intensity, (1-100yr) = 8.63 inches/hr
Q-10yr = C I A
R-40W C = 0.4
R-80W C = 0.35
1/2 Flow
Q-10yr = 81.3 cfs 40.6 cfs
Q-25yr = 93.6 cfs 46.8 cfs
Q-100yr = 110.1 cfs 55.0 cfs
PIPE CULVERT ANALYSIS
COMPUTATION OF CULVERT PERFORMANCE CURVE
Culvert Diameter (feet) 2.5 DOUBLE
FHWA Chart Number (1,2 or 3) 1
Scale Number on Chart (Type of Culvert Entrance) 3
Manning's Roughness Coefficient (n-value) .013
Entrance Loss Coefficient of Culvert Opening 0.5
Culvert Length (feet) 73
Culvert Slope (feet per foot) .0366
*** RESULTS ***
Flow Rate Tailwater ..Headwater (ft).. Normal Critical Depth at Outlet HW/D
(cfs) Depth(ft) In.Ctrl. Out.Ctd. Depth(ft) Depth(ft) Outlet(ft) Vel.(fps)
40.60 2.00 3.89 1.82 1.28 2.14 1.28 16.13 1.6
46.80 2.00 4.60 2.65 1.39 2.25 1.39 16.68 1.8
55.00 2.00 5.70 3.89 1.53 2.35 1.53 17.43 2.3
For a pipe diameter of 3.13 feet and
an outlet velocity of 16.13 feet per second:
The recommended apron length is 31.25 feet
The maximum stone diameter is 35.4 inches.
AVG DIAM STONE THICKNESS
(inches) CLASS (inches)
3 A 9
6 B 12
13 Bor1 18
» 23 2 30 x
WETLANDS IMPACT 1,140.00 S.F.
0.0262 Acres
IMPACTED CHANNEL LENGTH
(INCLUDING RIP-RAP PAD) 105 L.F.
RIP-RAP PAD IMPACT 32 L.F.
ZONE 1 DISTURBED AREA 3,578 S.F.
ZONE 2 DISTURBED AREA 5,144 S.F.
For Multiple Pipes use 1.25 x D.
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DRAINAGE AREA = 12.08 Ac.
Time of Concentration - Virpich Equation
3 0.385
Tc= (L/ H )
128
L= Length of Travel
H = Height of most remote point
Drainage Area =
Channel Flow
Elevation of most remote point, (1-11) _
Elevation of point of design, (1-12) _
Length of travel, (L) _
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Time of Concentration, (Tc) =>
Intensity, (1-10yr) =
Intensity, (1-25yr) =
Intensity, (1-100yr) _
Q-10yr = C I A
R-40W C = 0.4
R-80W C = 0.35
Q-10yr = 33.8 cfs
Q-25yr = 38.9 cfs
Q-100yr = 45.4 cfs
12.08 Ac.
412.6 feet
357 feet
1176 feet
1
5.85 minutes
7.00 inches/hr
8.04 inches/hr
9.40 inches/hr
PIPE CULVERT ANALYSIS
COMPUTATION OF CULVERT PERFORMANCE CURVE
Culvert Diameter (feet) 2.5
FHWA Chart Number (1,2 or 3) 1
Scale Number on Chart (Type of Culvert Entrance) 3
Manning's Roughness Coefficient (n-value) .013
Entrance Loss Coefficient of Culvert Opening 0.5
Culvert Length (feet) 65
Culvert Slope (feet per foot) .0286
' RESULTS
Flow Rate Tailwater ..Headwater (ft).. Normal Critical Depth at Outlet
(cfs) Depth(ft) In.Ctrl. Out.Ctrl. Depth(ft) Depth(ft) Outlet(ft) Vel.(fps)
33.80 2.00 3.23 1.81 1.23 1.98 1.23 14.04
38.90 2.00 3.71 2.39 1.34 2.10 1.34 14.54
45.40 2.00 4.44 3.21 1.48 2.23 1.48 15.01
HW/D
1.3
1.5
1.8
For a pipe diameter of 2.50 feet and
an outlet velocity of 14.04 feet per second:
The recommended apron length is 20.00 feet
The mabmum stone diameter is 27.6 inches.
AVG DIAM STONE THICKNESS
(inches) CLASS (inches)
3 A 9
6 B 12
y 13 Bor 1 18 a
23 2 30
WETLANDS IMPACT 1,004.10 S.F.
0.0231 Acres
IMPACTED CHANNEL LENGTH
(INCLUDING RIP-RAP PAD) 85 L.F.
RIP-RAP PAD IMPACT 20 L.F.
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CROSSING #3
DRAINAGE AREA = 78.79 Ac.
Time of Concentration - Kirpich Equation
3 0.385
Tc = L( / H )
128
L = Length of Travel
H = Height of most remote point
Drainage Area =
Overland Flow
Elevation of most remote point, (H1) _
Elevation of point of design, (1-12) _
Length of travel, (L) _
Mult. factor =
Incremental Tc =
Channel Flow
Elevation of most remote point, (1-11) _
Elevation of point of design, (1-12) _
Length of travel, (L) _
Mutt. factor =
Incremental Tc =
Time of Concentration, (Tc) _
Intensity, (1-10yr) =
Intensity, (1-25yr) =
Intensity, (1-100yr) _
Q-10yr = C I A
R-40W C = 0.4
R-80W C = 0.35
Q-10yr = 177.7 cfs
Q-25yr = 205.5 cfs
Q400yr = 243.2 cis
1/2 flow
88.9 cis
102.8 cis
121.6 cis
78.79 Ac.
0 feet
0 feet
0 feet
0
0.00 minutes
416.9 feet
313 feet
2810 feet
1
12.58 minutes
12.58 minutes
5.64 inches/hr
6.52 inches/hr
7.72 inches/hr
7
PIPE CULVERT ANALYSIS
COMPUTATION OF CULVERT PERFORMANCE CURVE
Culvert Diameter (feet) 3.5 DOUBLE
FHWA Chart Number (1,2 or 3) 1
Scale Number on Chart (Type of Culvert Entrance) 3
Manning's Roughness Coefficient (n-value) .013
Entrance Loss Coefficient of Culvert Opening 0.5
Culvert Length (feet) 64
Culvert Slope (feet per foot) .0154
' RESULTS "
Flow Rate Tailwater ..Headwater (ft).. Normal Critical Depthat Outlet
(cfs) Depth(ft) In Ctrl Out Ctrl Depth(ft) Depth(ft) Outiet(ft) Vel.(fps) HW/D
88.90 2.80 5.12 4.61 2.18 2.93 2.18 14.09 1.5
102.80 2.80 6.03 5.57 2.41 3.10 2.41 14.53 1.7
121.60 2.80 7.48 7.03 2.82 3.26 2.82 14.66 2.1
For a pipe diameter of 4.38 feet and For Multiple Pipes use 1.25 x D.
an outlet velocity of 14.09 feet per second:
The recommended apron length is 43.75 feet.
The maximum stone diameter is 27.8 inches.
AVG DIAM STONE THICKNESS
(inches) CLASS (inches)
3 A 9
6 B 12
13 B or 1 18
» 23 2 30 K
WETLANDS IMPACT N/A S.F.
N/A Acres
IMPACTED CHANNEL LENGTH
(INCLUDING RIP-RAP PAD) 108 L. F.
RIP-RAP PAD IMPACT 44 L. F.
ZONE 1 DISTURBED AREA 6,776 S.F.
ZONE 2 DISTURBED AREA 4,100 S.F.
8
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Drainage Area =
TR-55 Time of concentration
216.3 Ac.
Segment 1
Sheet Flow
Woods - Light Underbrush
Mannings n =
Flow Length =
10-yr 24hr. Rainfall, P =
High Point Elev.=
Low Point Elev.=
S=
0.8
Tt = 0.007" (nQ _
0.5 0.4
P S
Segment 2
Shallow Concentrated Flow
Woods - Light Underbrush
Flow Length =
High Point Elev.=
Low Point Elev.=
Watercourse Slope, s =
Average Velocity, V =
L =
3600"V
Segment 3
Channel Flow =
Channel Flow Length=
High Point Elevation =
Low Point Elevation =
Channel Slope =
Channel Depth (Dank Full Avg.) _
Channel Sideslopes (Avg.) _
Cross Sectional Flow Area, a =
Wetted Perimeter =
Hyraulic Radius =
Mannings n =
0.670.5
V= 1.49R S =
n
0.40
300 I.f.
5.28
472.6 ft.
456 ft.
0.055333 ft./ft.
0.45 hr.
586 I.f.
456 ft.
400 ft.
0.095563 ft/ft
2.4 ft./sec. See fig 3-1 "Urban Hydrology for
0.07 hr. Small Watersheds" USGA TR-55
4,210 I.f.
400 ft
290 ft
0.026 ft/ft
4 ft.
4.5:1
27.0 s.f.
11.1 ft
2.44 ft.
0.4
1.09 ft/s
Bottom 4 ft.
Tt = L = 1.07 hr.
3600'V
So, Tc = Sheet Flow Tt + Shallow Concentrated Flow Tt + Channel Flow Tt
Tc = 1.52 hr.
12
100 year 24 Hour Storm
P = 8.0
S = 2.66 in.
Q = 5.51 in. (depth of runoff)
la/P= 0.07
Qu = 285 csm/iin
Fp = 1
A = 0.34 sq.mi. (acres/640)
113 flow
Qp 100yr = 530.5 cfs 176.8 cis
PIPE CULVERT ANALYSIS
COMPUTATION OF CULVERT PERFORMANCE CURVE
Culvert Diameter (feet) 4 TRIPLE
FHWA Chart Number (1,2 or 3) 1
Scale Number on Chart (Type of Culvert Entrance) 3
Manning's Roughness Coefficient (n-value) .013
Entrance Loss Coefficient of Culvert Opening 0.5
Culvert Length (feet) 94
Culvert Slope (feet per foot) .02
- RESULTS -
Flow Rate Tailwater ..Headwater (ft).. Normal Critical Depthat Outlet
(cfs) Depth(ft) In.Ctrl. OutCtri. Depth(ft) Death(ft) Outiet(ft) Vel.(fps) HW/D
97.70 3.20 4.76 3.30 1.95 3.00 1.95 16.02 1.2
132.00 3.20 6.26 5.08 2.35 3.43 2.35 17.20 1.6
176.80 3.20 8.03 7.98 2.88 3.76 2.88 18.22 2.3
TRIPLE 48" RCP
For a pipe diameter of 5.00 feet and For Multiple Pipes use 1.25 x D.
an outlet velocity of 16.00 feet per second:
The recommended apron length is 50.00 feet
The maximum stone diameter is 34.9 inches.
AVG DIAM STONE THICKNESS
(inches) CLASS (inches)
3 A 9
6 B 12
13 B or 1 18
y 23 2 30
WETLANDS IMPACT N/A S.F.
N/A Acres
IMPACTED CHANNEL LENGTH
(INCLUDING RIP-RAP PAD) 144 L.F.
RIP-RAP PAD IMPACT 50 L.F.
ZONE 1 DISTURBED AREA 10,712 S.F.
ZONE 2 DISTURBED AREA 6,067 S.F.
14
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CROSSING #5
Drainage Area =
TR-55 Time of concentratloi
470.58 Ac.
Segment 1
Sheet Flow
Woods - Light Underbrush
Mannings n =
Flow Length =
2-yr 24hr. Rainfall, P =
High Point Elev.=
Low Point Elev.=
S=
0.8
Tt = 0.007" (nL) _
0.5 0.4
P S
Segment 2
Shallow Concentrated Flow
Woods - Light Underbrush
Flow Length =
High Point Elev.=
Low Point Elev.=
Watercourse Slope, s =
Average Velocity, V =
L =
3600"V
Segment 3
Channel Flow =
Channel Flow Length=
High Point Elevation =
Low Point Elevation =
Channel Slope =
Channel Depth (Bank Full Avg.) _
Channel S'ideslopes (Avg.) _
Cross Sectional Flow Area, a =
Wetted Perimeter =
Hyraulic Radius =
Mannings n =
0.670.5
V= 1.49R S =
n
0.40
333 I.f.
3.6
442.4 ft
425 ft.
0.052252 ft./ft.
0.60 hr.
1 I.f.
1 ft.
1 ft.
0 ft/ft
2.4 ft./sec. See fig 3-1 "Urban Hydrology for
0.00 hr. Small Watersheds" USGA TR-55
7,782 I.f.
425 ft.
274 ft.
0.019 ft/ft
4 ft.
4.5:1 Bottom 4 ft.
27.0 s.f.
11.1 ft
2.44 ft.
0.4
0.94 ft/s
Tt = L = 2.29 hr.
3600"V
So, Tc = Sheet Flow Tt + Shallow Concentrated Flow Tt + Channel Flow Tt
Tc = 2.90 hr.
18
PEAK DISCHARGE
Qp=QuAQFp
Qp = Peak Discharge (cfs)
Qu = Unit peak discharge (csmin)
A = Drainage Area (sq. mi.)
Q = Runoff Depth (in.)
Fp = Pond and swamp adjustment factor
2
Q = (P4a) / (P4a) + S
Q = accumalated direct runoff (in.)
P = accumalated rainfall (potential maximum runoff) (in.)
la = initial abstraction including surface storage, interception
and infiltation prior to runoff (in.)
S = potential maximum soil retention (in.)
CN =1000 / (10+5)
la = 0.2 S
la = 0.53 in.
Hydrologic Group C 10 year 24 Hour Storm
Cn = 79 P = 5.28
1 acre Residential districts
S = 2.66 in.
Q = 3.04 in. (depth of runoff)
laIP= 0.10
Qu = 140 csmAn
Fp = 0.87 3% Pond Area Upstream
A = 0.74 sq.mi. (acres/640)
1/2 flow
Op 10yr = 272.6 cfs 136.3136 cfs
25 year 24 Hour Storm
P = 6.48
S = 2.66 in.
Q = 4.11 in. (depth of runoff)
laIP= 0.08
Qu = 140 csmAn
Fp = 0.87 3% Pond Area Upstream
A = 0.74 sq.mi. (acres/640)
1/2 flow
Op 25yr = 368.2 cfs 184.0915 cfs
100 year 24 Hour Storm
P=8.0
S = 2.66 in.
Q = 5.51 in. (depth of runoff)
Ia/P= 0.07
Qu = 140 csm/in
Fp = 0.87 1 % Pond Area Upstream
A = 0.74 sq.mi. (acres/640)
1 /2 flow
Qp 100yr = 493.3 cfs 246.6367 cfs
19
PIPE CULVERT ANALYSIS
COMPUTATION OF CULVERT PERFORMANCE CURVE
Culvert Diameter (feet) 5 DOUBLE
FHWA Chart Number (1,2 or 3) 1
Scale Number on Chart (Type of Culvert Entrance) 3
Manning's Roughness Coefficient (n-value) .013
Entrance Loss Coefficient of Culvert Opening 0.5
Culvert Length (feet) 132
Culvert Slope (feet per foot) .015
" RESULTS "
Flow Rate Tailwater ..Headwater (ft).. Normal Critical Depth at Outlet
(cfs) Depth(ft) In.Ctrl. Out Ctrl. Depth(ft) Depth(ft) Outlet(ft) Vel.(fps) HW/D
136.30 4.00 4.98 3.67 2.28 3.34 2.28 15.60 1.0
184.09 4.00 6.34 5.17 2.73 3.88 2.73 16.79 1.2
246.60 4.00 8.43 7.57 3.29 4.40 3.29 17.99 1.7
For a pipe diameter of 6.25 feet and
an outlet velocity of 15.60 feet per second:
The recommended apron length is 62.50 feet
The maximum stone diameter is 33.4 inches.
AVG DIAM STONE THICKNESS
(inches) CLASS (inches)
3 A 9
6 B 12
13 Bor1 18
b 23 2 30 a
WETLANDS IMPACT N/A S.F.
N/A Acres
IMPACTED CHANNEL LENGTH
(INCLUDING RIP-RAP PAD) 195 L.F.
RIP-RAP PAD IMPACT 63 L.F.
ZONE 1 DISTURBED AREA 10,483 S.F.
ZONE 2 DISTURBED AREA 6,412 S.F.
For Multiple Pipes use 1.25 x D.
20
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CROSSING #6 - IRRIGATION LAKE
Drainage Area = 470.58 Ac.
TR-55 Time of concentration
Segment T
Sheet Flow
Woods - Light Underbrush
Mannings n = 0.40
Flow Length = 333 I.f.
2-yr 24hr. Rainfall, P = 3.6
High Point Elev.= 442.4 ft
Low Point Elev.= 425 ft.
S = 0.052252 ft./ft.
0.8
Tt = 0.007* (nL) = 0.60 hr.
0.5 0.4
P S
Segment 2
Shallow Concentrated Flow
Woods - Light Underbrush
Flow Length =
High Point Elev.=
Low Point Elev.=
Watercourse Slope, s =
Average Velocity, V =
L =
3600*V
Segment 3
Channel Flow =
Channel Flow Length=
High Point Elevation =
Low Point Elevation =
Channel Slope =
Channel Depth (Bank Full Avg.) _
Channel Sideslopes (Avg.) _
Cross Sectional Flow Area, a =
Wetted Perimeter =
Hyraulic Radius =
Mannings n =
1 I.f.
1 ft
1 ft.
0 ft/ft
2.4 ft./sec. See fig 3-1 "Urban Hydrology for
0.00 hr. Small Watersheds" USGA TR-55
7,782 I.f.
425 ft.
274 ft.
0.019 ft/ft
4 ft.
4.5:1
27.0 s.f.
11.1 ft.
2.44 ft.
0.4
0.670.5
V = 1.49 R S = 0.94 ft/s
n
Tt = L = 2.29 hr.
3600*V
Bottom 4 ft.
So, Tc = Sheet Flow Tt + Shallow Concentrated Flow Tt + Channel Flow Tt
Tc = 2.90 hr.
23
PEAK DISCHARGE
Qp=QuAQFp
Qp = Peak Discharge (cfs)
Qu = Unit peak discharge (csm/in)
A = Drainage Area (sq. mi.)
Q = Runoff Depth (in.)
Fp = Pond and swamp adjustment factor
2
Q = (P4a) I (P4a) + S
Q = accumalated direct runoff (in.)
P = accumalated rainfall (potential maximum runoff) (in.)
la = initial abstraction including surface storage, interception
and infiltation prior to runoff (in.)
S = potential maximum soil retention (in.)
CN -10001(10+S)
la = 0.2 S
la = 0.53 in.
Hydrologic Group C 10 year 24 Hour Storm
Cn = 79 P = 5.28
1 acre Residential districts
S = 2.66 in.
Q = 3.04 in. (depth of runoff)
la/P= 0.10
Qu = 140 csm/in
Fp = 0.87 3% Pond Area Upstream
A = 0.74 sq.mi. (acres/640)
1 /2 flow
Qp 10yr = 272.6 cfs 136.3136 eft
25 year 24 Hour Storm
P = 6.48
S = 2.66 in.
Q = 4.11 in. (depth of runoff)
la/P= 0.08
Qu = 140 csmfin
Fp = 0.87 3% Pond Area Upstream
A = 0.74 sq.mi. (acres/640)
112 flow
Qp 25yr = 368.2 cfs 184.0915 cfs
100 year 24 Hour Storm
P = 8.0
S = 2.66 in.
Q = 5.51 in. (depth of runoff)
la/P= 0.07
Qu = 140 csm/in
Fp = 0.87 1 % Pond Area Upstream
A = 0.74 sq.mi. (acres/640)
112 flow
Qp 100yr = 493.3 cfs 246.6367 cfs
24
PIPE CULVERT ANALYSIS
COMPUTATION OF CULVERT PERFORMANCE CURVE
Culvert Diameter (feet) 5 DOUBLE
FHWA Chart Number (1,2 or 3) 1
Scale Number on Chart (Type of Culvert Entrance) 3
Manning's Roughness Coefficient (n-value) .013
Entrance Loss Coefficient of Culvert Opening 0.5
Culvert Length (feet) 132
Culvert Slope (feet per foot) .015
* RESULTS -
Flow Rate Tailwater ..Headwater (ft).. Normal Critical Depth at Outlet
(cfs) Depth(ft) In.Ctrl. Out.Ctrl. Depth(ft) Depth(ft) Outlet(ft) Vel.(fps) HW/D
136.30 4.00 4.98 3.67 2.28 3.34 2.28 15.60 1.0
184.09 4.00 6.34 5.17 2.73 3.88 2.73 16.79 1.2
246.60 4.00 8.43 7.57 3.29 4.40 3.29 17.99 1.7
For a pipe diameter of 6.25 feet and
an outlet velocity of 15.60 feet per second:
The recommended apron length is 62.50 feet.
The ma)dmum stone diameter is 33.4 inches.
AVG DIAM STONE THICKNESS
(inches) CLASS (inches)
3 A 9
6 B 12
13 B or 1 18
s 23 2 30 .c
WETLANDS IMPACT
IMPACTED CHANNEL LENGTH
(INCLUDING RIP-RAP PAD)
RIP-RAP PAD IMPACT
LAKE SURFACE AREA -
ZONE 1 DISTURBED AREA
ZONE 2 DISTURBED AREA
N/A S.F.
N/A Acres
1902 L.F.
0 L.F.
412,618 S.F.
155,047 S.F.
80,140 S.F.
For Multiple Pipes use 1.25 x D.
25
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Drainage Area = 150.45 Ac.
TR'?i.i' Time of concentration
Segment 1
Sheet Flow
Woods - Light Underbrush
Mannings n = 0.40
Flow Length = 333 I.f.
2-yr 24hr. Rainfall, P = 3.6
High Point Elev.= 442.4 ft
Low Point Elev.= 425 ft
S = 0.052252 ft/ft
0.8
Tt = 0.007" (nQ = 0.60 hr.
0.5 0.4
P S
Segment 2
Shallow Concentrated Flow
Woods - Light Underbrush
Flow Length = 1 I.f.
High Point Elev.= 1 ft.
Low Point Elev.= 1 ft.
Watercourse Slope, s = 0 ft/ft
Average Velocity, V = 2.4 ft./sec. See fig 3-1 "Urban Hydrology for
L = 0.00 hr. Small Watersheds" USGA TR-W
3600*V
Segment 3
Channel Flow =
Channel Flow Length= 3,624 I.f.
High Point Elevation = 425 ft
Low Point Elevation = 323 ft
Channel Slope = 0.028 ft/ft
Channel Depth (Bank Full Avg.) = 4 ft.
Channel Sideslopes (Avg.) = 4.5:1 Bottom 4 ft.
Cross Sectional Flow Area, a = 27.0 s.f.
Wetted Perimeter = 11.1 ft.
Hyraulic Radius = 2.44 ft.
Mannings n = 0.4
0.670.5
V = 1.49 R S = 1.13 ft/s
n
Tt = L = 0.89 hr.
3600*V
So, Tc = Sheet Flow Tt + Shallow Concentrated Flow Tt + Channel Flow Tt
Tc = 1.49 hr.
15
N
PEAK DISCHARGE
Qp=QuAQ Fp
Qp = Peak Discharge (cfs)
Qu = Unit peak discharge (csm(n)
A = Drainage Area (sq. mi.)
Q = Runoff Depth (in.)
Fp = Pond and swamp adjustment factor
2
Q - (P4a) / (Paa) + S
Q = accumalated direct runoff (in.)
P = accumalated rainfall (potential ma)dmum runoff) (in.)
la = initial abstraction including surface storage, interception
and infiltation prior to runoff (in.)
S = potential mabmum soil retention (in.)
CN =10001(10+S)
la = 0.2 S
la = 0.53 in.
Hydrologic Group C 10 year 24 Hour Storm
Cn = 79 P = 5.28
1 acre Residential districts
S = 2.66 in.
Q = 3.04 in. (depth of runoff)
la / P = 0.10
Qu = 290 csmfn
Fp = 0.87 3% Pond Area Upstream
A = 0.24 sq.mi. (acres/640)
Op 10yr = 180.6 cfs
25 year 24 Hour Storm
P = 6.48
S = 2.66 in.
Q = 4.11 in. (depth of runoff)
la/P= 0.08
Qu = 290 csmfin
Fp = 0.87 3% Pond Area Upstream
A = 0.24 sq.mi. (acres/640)
Qp 25yr = 243.8 cfs
100 year 24 Hour Storm
P = 8.0
S = 2.66 in.
Q = 5.51 in. (depth of runoff)
la/P= 0.07
Qu = 290 csm1in
Fp = 0.87 3% Pond Area Upstream
A = 0.24 sq.mi. (acres/640)
Qp 100yr = 326.7 cfs
16

PIPE CULVERT ANALYSIS
COMPUTATION OF CULVERT PERFORMANCE CURVE
Culvert Diameter (feet) 5.5
FHWA Chart Number (1,2 or 3) 1
Scale Number on Chart (Type of Culvert Entrance) 3
Manning's Roughness Coefficient (n-value) .013
Entrance Loss Coefficient of Culvert Opening .5
Culvert Length (feet) 83
Culvert Slope (feet per foot) .02
"" RESULTS ***
Flow Rate Tailwater ..Headwater (ft).. Normal Critical Depth at Outlet
(cfs) Depth(ft) In.Ctri. Out.Ctrl. Depth(ft) Depth(ft) Outiet(ft) Vel-fts) HW/D
180.60 4.40 5.71 4.55 2.35 3.76 2.35 18.67 1.0
243.80 4.40 7.13 6.16 2.81 4.36 2.81 19.93 1.3
326.70 4.40 9.79 8.73 3.39 4.91 3.39 21.23 1.8
WETLANDS IMPACT N/A S.F.
N/A Acres
IMPACTED CHANNEL LENGTH
(INCLUDING RIP-RAP PAD) 0 L.F. OPEN BOTTOM ARCH CULVERT
RIP-RAP PAD IMPACT 0 L.F.
ZONE 1 DISTURBED AREA 6,732 S.F.
ZONE 2 DISTURBED AREA 5,502 S.F.
17
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CROSSING 08
DRAINAGE AREA = 28.7 Ac.
Time of Concentration - Kirpich Equation
3 0.385
Tc = L( / H )
128
L= Length of Travel
H = Height of most remote point
Drainage Area = 28.7 Ac.
Channel Flow
Elevation of most remote point, (1-11) = 416.9 feet
Elevation of point of design, (1-12) = 339 feet
Length of travel, (L) = 1580 feet
Mutt factor = 1
Time of Concentration, (TO => 7.23 minutes
Intensity, (1-10yr) = 6.67 inches/hr
Intensity, (1-25yr) = 7.68 inches/hr
Intensity, (1-100yr) = 9.00 inches/hr
Q-10yr = C I A
R-40W C = 0.4
R-80W C = 0.35
Q-10yr = 76.6 cfs
Q-25yr = 88.1 cfs
Q-100yr = 103.3 cfs
PIPE CULVERT ANALYSIS
COMPUTATION OF CULVERT PERFORMANCE CURVE
Culvert Diameter (feet) 3
FHWA Chart Number (1,2 or 3) 1
Scale Number on Chart (Type of Culvert Entrance) 3
Manning's Roughness Coefficient (n-value) .013
Entrance Loss Coefficient of Culvert Opening 0.5
Culvert Length (feet) 61
Culvert Slope (feet per foot) .0348
* RESULTS *
Flow Rate TaiWater ..Headwater (ft).. Normal Critical Depth at Outlet
We) Depth(ft) In Ctrl OutCtrl. Depth(ft) Depth(ft) Oudet(ft) Vel.(fps) HW/D
76.60 2.40 5.79 4.28 1.70 2.74 1.70 18.53 1.9
88.10 2.40 8.99 5.47 1.87 2.83 1.87 19.03 2.3
103.3 2.40 8.84 7.26 2.10 2.91 2.10 19.57 2.9
5
. a
WETLANDS IMPACT 0.00 S.F.
0 Acres
50 L.F. 11' SPAN X 3'-6" RISE OPEN BOTTOM CONTECH ARCH PIPE
CHANNEL TO REMAIN UNDISTURBED.
IMPACTED CHANNEL LENGTH
(INCLUDING RIP-RAP PAD) 0 L. F.
RIP-RAP PAD IMPACT 0 L. F.
ZONE 1 DISTURBED AREA 2,906 S.F.
ZONE 2 DISTURBED AREA 2,226 S.F.
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CROSSING 09
DRAINAGE AREA = 2.88 Ac.
Time of Concentration - Kirpich Equation
3 0.385
Tc= (L/ H )
128
L = Length of Travel
H = Height of most remote point
Drainage Area = 2.88 Ac.
Channel Flow
Elevation of most remote point, (1-11) = 388 feet
Elevation of point of design, (1-12) = 348 feet
Length of travel, (L) = 425 feet
Mutt. factor = 1
Time of Concentration, (Tc) => 5.00 minutes
Intensity, (1-10yr) = 7.22 inches/hr
Intensity, (1-25yr) = 8.29 inchesthr
Intensity, (1-100yr) = 9.67 inches/hr
Q-10yr = C I A
R-40W C = 0.4
R-80W C = 0.35
Q-10yr = 8.3 cfs
Q-25yr = 9.5 cfs
Q-100yr = 11.1 cfs
PIPE CULVERT ANALYSIS
COMPUTATION OF CULVERT PERFORMANCE CURVE
Culvert Diameter (feet) 1.5
FHWA Chart Number (1,2 or 3) 1
Scale Number on Chart (Type of Culvert Entrance) 3
Manning's Roughness Coefficient (n-value) .013
Entrance Loss Coefficient of Culvert Opening 0.5
Culvert Length (feet) 84
Culvert Slope (feet per foot) .07
- RESULTS
Flow Rate Tailwater ..Headwater (ft).. Normal Critical Depthat Outlet
(cfs) Depth(ft) In.Ctri. Out.Ctrl. Depth(ft) Depth(ft) Outlet(ft) Vel.(fps)
8.30 1.20 1.77 -3.54 0.56 1.12 0.56 13.72
9.50 1.20 1.95 -3.18 0.60 1.19 0.60 14.26
11.10 1.20 128 -2.64 0.66 1.27 0.66 14.80
HW/D
1.2
1.3
1.5
21
"'--
For a pipe diameter of 1.50 feet and
an outlet velocity of 13.72 feet per second:
The recommended apron length is 12.00 feet.
The maximum stone diameter is 26.5 inches.
AVG DIAM STONE THICKNESS
(inches) CLASS (inches)
3 A 9
6 B 12
• 13 Bor1 18 a
23 2 30
CHANNEL IMPACT 312.00 S.F.
0.0072 Acres
IMPACTED CHANNEL LENGTH
(INCLUDING RIP-RAP PAD) 53 L. F.
RIP-RAP PAD IMPACT 12 L.F.
22
PEAK DISCHARGE
Qp=QuAQFp
Qp = Peak Discharge (cfs)
Qu = Unit peak discharge (csmfin)
A = Drainage Area (sq. mi.)
Q = Runoff Depth (in.)
Fp = Pond and swamp adjustment factor
2
Q = (P-la) I (P-la) + S
Q = accumalated direct runoff (in.)
P = accumalated rainfall (potential maximum runoff) (in.)
la = initial abstraction including surface storage, interception
and infil ation prior to runoff (in.)
S = potential maximum soil retention (in.)
CN =1000 / (10+S)
la = 0.2 S
la = 0.53 in.
Hydrologic Group C 10 year 24 Hour Storm
Cn = 79 P = 5.28
1 acre Residential districts
S = 2.66 in.
Q = 3.04 in. (depth of runoff)
la / P = 0.10
Qu = 285 csmfin
Fp = 1
A = 0.34 sq.mi. (acres/640)
113 flow
Op 10yr = 293.2 cfs 97.7 cfs
25 year 24 Hour Storm
P = 6.48
S = 2.66 in.
Q = 4.11 in. (depth of runoff)
la/P= 0.08
Qu = 285 csm/in
Fp = 1
A = 0.34 sq.mi. (acres/640)
113 flow
Qp 25yr = 396.0 cfs 132.0 cfs
13