20130306 Ver 1_401 Application_20130313

a
Needham Environmental Inc.
Robert N. Needham, PWS
9100 Charlestown Rd. SE
Winnabow, NC 28479
Office/Fax [phone]
needhambud @ec.rr.com
David Bailey
Regulatory Specialist
US Army Corps of Engineers
Wilmington Regulatory Field Office
69 Darlington Ave
Wilmington, NC 28403
Tom Gulley, NCLSS# 1256
P.O. Box 960
Wilmington, NC 28402
Office/Fax [phone]
tgulley @gmail.com
March 20, 2013
201 30306
RE: PCN Form and Supporting Documentation for Parrot Landing East (SAW- 2012 - 01235),
Onslow County, North Carolina. j LD
ED
Dear David:
Enclosed is the PCN Form and supporting documents for the Parrot Landing East. This will be a
phased project with Phase I shown on the enclosed stormwater plans. There is another Parrot
Landing project that is a tract across Queens Creek Road and to the south of this site that is
owned by the same entity. I do not believe any wetland permits were issued for that project, but
it should be considered a separate project.
It was unavoidable to plan this townhome project without impacting the small wetland that is
located near the center of the tract. If you remember, this feature did not have any direct
connection to a wetland downslope. It is located approximately 370' from the wetlands adjacent
to Tan Tough Branch, which is the eastern property line. It was thought that this feature would
be considered "isolated ", but your office claimed jurisdiction. This feature is a seep that is at the
toe of a contour and is likely the result of ground water seepage. Constructing the project around
this feature will alter infiltration in the vicinity and the seepage area would likely be impacted or
become drier. Because of it's location, the fact that it does not directly connect to another
wetland, and potential impact if the project is constructed around this feature, we are proposing
to fill the entire 0.079 acre wetland area.
Compensatory mitigation is not required for impacts less than 1 /10th of an acre, so avoidance
and minimization is the only mitigation offered for this impact of 0.079 acres. The proposed
layout avoids any impact to Tan Tough Branch and it's adjacent wetlands. Due to the nature of
this project, which includes parking, sidewalk,, ect, it was impossible to avoid the small wetland
area near the center of the tract, without losing Building #14 and a portion of Building #7 (Se
Site Plan with Wetland Impact). The applicant considered just impacting the wetland area under
both proposed buildings, but additional areas outside of the building footprint woul
needed to stabilize the fill. Considering all of these factors, it became more feasibl
entire area. n/j^
R�
Z�13

If you have any questions or concerns, I can be contacted at (910)795 -0319, (910)297 -1282, or by
e -mail at [e-mail].
cc: NC DWQ (five copies)
Greg Maready
Sincerely,
i,p*.w Ito-is
J. Tom Gulley, Jr.
North Carolina. Soil Scientist License# 1256

`ot W ALt'9
O�
y
> i
C'. <
20130306
Office Use Only:
Corps action ID no
DWQ project no.
Form Version 1.4 January 2009
Pre - Construction Notification (PCN) Form
A. Applicant Information
1. Processing
la. Type(s) of approval sought from the Corps:
© Section 404 Permit ❑ Section 10 Permit
1 b. Specify Nationwide Permit (NWP) number: 18 or General Permit (GP) number.
1 c. Has the NWP or GP number been verified by the Corps?
© Yes ❑ No
1 d. Type(s) of approval sought from the DWQ (check all that apply):
® 401 Water Quality Certification — Regular ❑ Non -404 Jurisdictional General Permit
❑ 401 Water Quality Certification — Express ❑ Riparian Buffer Authorization
le. Is this notification solely for the record
because written approval is not required?
For the record only for DWQ
401 Certification:
® Yes ❑ No
For the record only for Corps Permit:
® Yes ❑ No
1f. Is payment into a mitigation bank or in -lieu fee program proposed for
mitigation of impacts? If so, attach the acceptance letter from mitigation bank
or in -lieu fee program.
❑ Yes ® No
1g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1 h
below.
to ❑ No
1 h. Is the project located within a NC DCM Area of Environmental Concern (AEC)?
❑ Yes ® No
2. Project Information
2a. Name of project:
Parrot Landing East
2b. County:
Onslow
2c. Nearest municipality / town:
Swansboro
2d. Subdivision name:
Parrot Landing East
2e. NCDOT only, T.I.P. or state project no:
3. Owner Information
3a. Name(s) on Recorded Deed:
Parrot Landing, Inc.
3b. Deed Book and Page No.
3738/102
3c. Responsible Party (for LLC if
applicable):
Greg Maready
3d. Street address:
126 Phillips Loop Raod
3e. City, state, zip:
Swansboro, NC 28584
3f. Telephone no.:
910 - 326 -6511
3g. Fax no.:
910 - 326 -6514
3h. Email address:
greg @mareadyappraisals.com
Page 1 of 10
PCN Form — Version 1.4 January 2009

4. Applicant Information (If different from owner)
4a. Applicant is:
® Agent ❑ Other, specify:
4b. Name:
Tom Gulley
4c. Business name
Needham Environmental. Inc
(If applicable):
4d. Street address:
2130 Carolina Beach Rd.
4e. City, stabs, zip:
Wilmington, NC 28401
4f. Telephone no.:
910 -297 -1282
4g. Fax no.:
910 - 795 -0319
4h. Email address: [e-mail]
S. AgentfConsuttent Inionnatlon (If applicable)
Sa. Name:
Tom Gulley
Sb. Business name
Needham Environmental, Inc.
(it applicable):
5c. Street address:
2130 Carolina Beach Rd.
Sd. City, state, alp:
Wilmington, NC 28401
Se. Telephone no.:
910 -297 -1282
5f. Fax no.:
910 - 795-0319
5g. Email address:
[e-mail]
Page 2 of 10

B. Project Information and Prior Project History
1. Property Identification
1a. Property identification no. (tax PIN or parcel ID):
PIN 53440450371, PARID 037514
1b. Site coordinates (in decimal degrees):
I Latitude: 34.6726 Longitude: -77.1868
1c. Property size:
15 acres
2. Surface Waters
2a. Name of nearest body of water to proposed project:
Tan Trough Branch/Parrot Swamp
2b. Water Quality Classification of nearest receiving water.
SA
2c. River basin:
White Oak
3. Project Description
3a. Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this
application:
Western portion of subject tract is an agricultural field. Remainder of subject tract is in mature pines. Existing subdivisions adjacent to the north, east,
and southwest. Agricultural land to the west and south.
3b. List the total estimated acreage of all existing wetlands on the property: 1.5
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property: 700
3d. Explain the purpose of the proposed project:
Residential Development - Townhomes
3e. Describe the overall project in detail, including the type of equipment to be used:
Construction of townhomes and associated roads, sidewalks, act. Typical construction equipment, bulldozer, dump trucks, ect.
4. Jurisdictional Determinations
4a. Have jurisdictional wetiand or stream determinations by the
Corps or State been requested or obtained for this property /
project (including all prior phases) in the past?
® Yes ❑ No ❑ Unknown
Comments:
4b. If the Corps made the jurisdictional determination, what type
of determination was made?
Preliminary inal
❑ ry
4c. If yes, who delineated the jurisdictional areas?
Name (if known):
Agency /Consultant Company: Needham Environmental, Inc.
Other:
4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
USACOE on site review on July 25, 2012 by David Bailey. USACOE signed survey on October 30, 2012.
S. Project History
5a. Have permits or certifications been requested or obtained for
this project (including all prior phases) in the past?
❑ Yes ® No ❑ Unknown
5b. If yes, explain in detail according to "help file" instructions.
6. Future Project Plans
6a. Is this a phased project?
© Yes ❑ No
6b. If yes, explain.
The construction for this tract will be in two phases. The boundary for Phase I can be seen in the stormwater plans attached. Plans included for whole
project are also included.
Page 3 of 10
PCN Form — Version 1.4 January 2009

C. Proposed impacts Inventory
I. Impacts Summary
1 a. Which sections were completed below for your project (check all that apply),
® Wetlands ❑ Streams— tributaries ❑ Buffers ❑ Open Waters ❑ Pond Constnrction
2. Wetland Impacts
If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted,
2a.
Wetland impact
number
Permanent (P) or
Tem
2b.
Type of impact
2c.
Type of wetland
2d.
Forested
2e.
Type of Jurisdiction
Corps (404,10) or
DWO (401. other)
2f.
Area of
impact
(acres)
W1 -
[B
Seep .
Yes •
Corps •
079
W2 -
Choose one
Choose one
Yeaft
W3 -
Choose one
Choose one
Yesm
W4 -
Choose one
Choose one
Yeaft
W5 -
Choose one
Choose one
Yeaft
We -
Choose one
Choose one
Yes/No
29. Total
Wetland Impacts:
.079
2h. Comments:
Wedend area Is located app mdmatley 37V from Ow other JursidtctlOnal wetland and does not have a direct surface connedion, so the true wetland
type would be an "mated' wedend, which is not on the dsd of wetland types.
3. Stream Impacts
If there are perennial or intermittent stream Impacts (Including temporary Impacts) proposed on the site, then complete this
question for all stream sites impacted.
3a.
Stream impact
number
Permanent (P) or
Temporary (T)
3b.
Type of Impact
3c.
Stream name
3d.
Perennial (PER) or
intermittent (INT)?
3e.
Type of
Jurisdiction
3f.
Average
stream
width
(feet)
3g.
Impact
length
(linear
feet)
S1 -
Choose one
S2 -
Choose one
S3 -
Choose one
S4 -
Choose one
S5 -
Choose ono
S6 -
Choose one
3h. Total stream and tributary Impacts
31. Comments:
Page 4 of 10
PCN Form — Version 1.4 January 2009

4. Open Water Impacts
If two are proposed Impacts to takes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of
the U.S. then 1 uanv list all open water Impacts below.
4a.
Open water
impact number
Permanent (P) or
Te re
4b.
Name of waterbody
(if applicable)
4c.
Type of Impact
4d.
Waterbody
type
49.
Area of impact (acres)
01 -
Choose one
Choose
02 -
Choose one
Choose
03 -
Choose one
Choose
04 -
Choose one
Choose
4f. Total open water impacts
4g. Comments:
& Pond or take Construction
If Pond or lake construction ed tlten complete the chart below.
5a.
Pond ID number
5b.
Proposed use or
purpose of pond
5c.
Wetland Impacts (aces)
5d.
Stream Impacts (feet)
Se.
Upland
(ate)
Flooded
Filled
Excavated
Flooded
Filled
Excavated
P1
Choose one
P2
Choose one
5f. Total:
5g. Comments:
5h. Is a dam high hazard permit required?
❑ Yes ❑ No If yes, permit ID no:
5i. Expected pond surface area (acres):
5). Size of pond watershed (acres):
Sk. Method of construction:
& Buffer hupacts (for DVVQ)
If project will impact a protected riparian buffer, then complete the chart below, if yes, then indWuaIIy list all buffer impacts
below. If any i cts require mitt ,hon an u MUST fill out Section D of this form.
6a. Project is in which protected basin?
❑ Nam ❑ Tar - Pamlico ❑ Catawba ❑ Randleman ❑ Other.
6b.
Buffer Impact
number —
Permanent (P) or
Tem
6c,
Reason for impact
6d.
Stream name
Be.
Buffer
mitigation
required?
6f.
Zone i
Impact
(square
feet )
Zone 2
impact
(square
feet
B1
Yes/No
82 -
Yewwo
B3 -
YOWNo
S4 -
YeslNo
B5
Yesift
66 -
Yes/No
61h. Total Buffer Mqum s:
6l. Comments:
Page 5 of 10

D. Impact Justification and Mitigation
1. Avoidance and Minimization
1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
All wetland impacts along Tan Tough Branch on the eastern portion of the tract have been avoided. Only the "semi - isolated" wetland, which is located
more than 37V from any other wetland, will be impacted. This wetland is 0.079 acres is size. The only means of further avoidance would be the
deletion of Building #14 & a portion of Building #7. This wetland appears to be at the toe of a contour and is likely the result of ground water seepage.
The water volume is minor and does not create sufficient drainage to connect the wetland to other wetlands down slope of the seepage location.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
The construction of this project will alter infiltration in the vicinity of the seepage area, causing the seepage area to be negatively impacted post
construction. The deletion of Buildings # 7 & #14 would only retain minimal wetland value. This temporary benefit does not warrant the deletion of
these buildings. The area between Buildings #7 & #14 will be impacted to stabilize the fill for the building construction, soft was determined that filling
the entire wetland was more feasible. Driveways and Parking areas cannot be shifted without undue expense and/or building code requirements.
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a. Does the project require Compensatory Mitigation for
impacts to Waters of the U.S. or Waters of the State?
❑ Yes ® No
2b. If yes, mitigation is required by (check all that apply):
❑ DWQ ❑ Corps
2c. If yes, which mitigation option will be used for this
project?
❑ Mitigation bank
❑ Payment to in -lieu fee program
❑ Permittee Responsible Mitigation
3. Complete if Using a Mitigation Bank
3a. Name of Mitigation Bank:
3b. Credits Purchased (attach receipt and letter)
Type. Choose one
Type: Choose one
Type: Choose one
Quantity:
Quantity:
Quantity:
3c. Comments:
4. Complete if Making a Payment to In -lieu Fee Program
4a. Approval letter from in -lieu fee program is attached.
❑ Yes
4b. Stream mitigation requested:
linear feet
4c. if using stream mitigation, stream temperature:
Choose one
4d. Buffer mitigation requested (DWQ only):
square feet
4e. Riparian wetland mitigation requested:
acres
4f. Non - riparian wetland mitigation requested:
acres
4g. Coastal (tidal) wetland mitigation requested:
acres
4h. Comments:
S. Complete if Using a Pennittee Responsible Mitigation Plan
5a. If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan.
Page 6 of 10
PCN Form — Version 1.4 January 2009

6. Buffer Mitigation (State Regulated Riparian Buffer Rules) — required by DWQ
6a. Will the project result in an impact within a protected riparian buffer that requires
buffer mitigation?
❑ Yes ❑ No
6b. If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation. Calculate the
amount of mitigation required.
Zone
6c.
Reason for impact
6d.
Total impact
(square feet)
Multiplier
6e.
Required mitigation
(square feet)
Zone 1
3 (2 for Catawba)
Zone 2
1.5
6f. Total buffer mitigation required:
6g. If buffer mitigation is required, discuss what type of mitigation is proposed (e.g., payment to private mitigation bank,
permittee responsible riparian buffer restoration, payment into an approved in4leu fee fund).
6h. Comments:
Page 7 of 10

E. Stormwater Management and Diffuse Flow Plan (required by DWQ)
1. Diffuse Flow Plan
1 a. Does the project include or is it adjacent to protected riparian buffers identified
❑ Yes © No
within one of the NC Riparian Buffer Protection Rules?
1 b. If yes, then is a diffuse flow plan included? If no, explain why.
❑ Yes ❑ No
2. Stormwater Management Plan
2a. What is the overall percent imperviousness of this project?
15.47%
2b. Does this project require a Stormwater Management Plan?
© Yes ❑ No
2c. If this project DOES NOT require a Stormwater Management Plan, explain why:
2d. If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of the plan:
See Attached stormwater calculations and plans from RSC Engineering.
2e. Who will be responsible for the review of the Stormwater Management Plan?
NCDWQ
3. Certified Local Government Stormwater Review
3a. In which local government's jurisdiction is this project.?
Onslow County/None
❑ Phase 11
3b. Which of the following locally- implemented stormwater management programs
❑ NSW
USMP
apply (check all that apply):
Water Supply Watershed
❑ Other.
3c. Has the approved Stormwater Management Plan with proof of approval been
® Yes ❑ No
attached?
4. DWQ Stormwater Program Review
©Coastal counties
❑HQW
4a. Which of the following state - implemented stormwater management programs apply
ORW
(check all that apply):
WSession Law 2006 -246
❑Other.
4b. Has the approved Stormwater Management Plan with proof of approval been
® Yes ❑ No
attached?
5. DWQ 401 Unit Stormwater Review
5a. Does the Stormwater Management Plan meet the appropriate requirements?
© Yes ❑ No
5b. Have all of the 401 Unit submittal requirements been met?
© Yes ❑ No
Page 8 of 10
PCN Form — Version 1.4 January 2009

F. Supplementary Information
1. Environmental Documentation (DWQ Requirement)
1 a. Does the project involve an expenditure of public (federal/state/local) funds or the
❑ yes
® No
use of public (federal/state) land?
1 b. If you answered "yes" to the above, does the project require preparation of an
environmental document pursuant to the requirements of the National or State
❑ Yes
❑ No
(North Carolina) Environmental Policy Act (NEPA/SEPA)?
1c. If you answered "yes" to the above, has the document review been finalized by the
State Clearing House? (If so, attach a copy of the NEPA or SEPA final approval
letter.)
❑ Yes
❑ No
Comments:
2. Violations (DWQ Requirement)
2a. Is the site in violation of DWQ Wetland Rules (15A NCAC 2H .0500), Isolated
Wetland Rules (15A NCAC 2H .1300), DWQ Surface Water or Wetland Standards,
❑ Yes
® No
or Riparian Buffer Rules (15A NCAC 213 .0200)?
2b. Is this an after- the-fact permit application?
Oyes
©No
2c. If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s):
3. Cumulative Impacts (DWQ Requirement)
3a. Will this project (based on past and reasonably anticipated future impacts) result in
❑ Yes
® No
additional development, which could impact nearby downstream water quality?
3b. If you answered "yes" to the above, submit a qualitative or quantitative cumulative Impact analysis in accordance with the
most recent DWQ policy. If you answered "no," provide a short narrative description.
4. Sewage Disposal (DWQ Requirement)
4a. 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.
Sewer provided by ONWASA.
Page 9 of 10
PCN Form — Version 1.4 January 2009

S. Endangered Species and Designated Critical Habitat (Corps Requirement)
5a. Will this project occur in or near an area with federally protected species or
Yes No
habitat?
5b. Have you checked with the USFWS concerning Endangered Species Act
Yes No
impacts?
5c. If yes, indicate the USFWS Field Office you have contacted.
-
5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
US Fish 8 Wildlife Service - Endangered Species Program website.
6. Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as essential fish habitat?
❑ Yes ® No
6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat?
South Atlantic Habitat and Ecosystem IMP website
7. Historic or Prehistoric Cultural Resources (Corps Requirement)
7a. Will this project occur in or near an area that the state, federal or tribal
governments have designated as having historic or cultural preservation
❑ Yes ®No
status (e.g., National Historic Trust designation or properties significant in
North Carolina history and archaeology)?
7b. What data sources did you use to determine whether your site would impact historic or archeological resources?
NC State Historic Preservation Office website.
B. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA- designated 100 -year floodplain?
❑ Yes ® No
8b. If yes, explain how project meets FEMA requirements:
8c. What source(s) did you use to make the floodplain determination?
ncfloodmaps.com, 100 -year flood line shown on
James T. Gulley, Jr.
b C ti
3 1 I S/ o
Applicant/Agent's Printed Name
Applicant/Ag is Signature
Date
(Agent's signature is valid only If an authorization
letter from the applicant is provided.)
Page 10 of 10

Needham
Environmental, Inc.
Main Office/Fax [phone]
Tom Gulley — tgulleyQgmail.com
P.O. Box 960, Wilmington, NC. 28402
Agent Authorization Form
TO WHOM IT MAY CONCERN:
I /we, the undersigned, hereby authorize Needham Environmental, Inc. to act as our agent
in the preparation and representation of information related to the below listed tract. This
authorization grants permission for the USACE to enter the property for the purposes of
jurisdictional wetlands determination as well as review of any areas that may be included in
a 404/401 or CAMA permits. This authorization, for liability and professional courtesy
reasons, is valid only for government officials to enter the property when accompanied by
staff of Needham Environmental, Inc.
TRACT NAME: Parrot Landing
TRACT LOCATION: Queens Creek Rd, Tax Parcel #s 037514 & 152977
OWNER /APPLICANT: Parrot Landing, Inc /Greg Mayready
SIGNATURE:
DATE:

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Information provided by: Onslow County Online GIS
Parrot Landing Needham Environmental, Inc.
Environmental Consultants Site Location
Tax Parcel # 037514 Wilmington, N.C.
Swansboro, NC
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Information provided by: Onslow County Online GIS
Parrot Landing Needham Environmental, Inc.
Environmental Consultants Site Location
Tax Parcel # 037514 Wilmington, N.C.
Swansboro, NC
January 2013
03- 11 -008/PCN Maps.cdr

PROJECT/TRACT BOUNDARY SHOWN IN RED
1" - 500'
Information provided by: Onslow County Online GIS
Parrot Landing Needham Environmental, Inc.
Onslow County
Tax Parcel # 037514 Environmental Consultants Wilmington, N.C. �
Swansboro, NC Generalized Soils Map
January 2013
03- 11 -008/PCN Maps.cdr

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PROJECT/TRACT BOUNDARY SHOWN IN RED
Latitude - 34.6726 N
Longitude - 77.1874 W
Map Source: US Fish & Wildlife Service - NWI Maps
Parrot Landing Needham Environmental, Inc.
Tax Parcel # 037514 Environmental Consultants USGS Hubert (NC) Quad
Wilmington, N.C.
Swansboro, NC
June 2012
03- 11- 008 /PCN Maps cdr
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IPA
PROJECT/TRACT BOUNDARY SHOWN IN RED
Latitude - 34.6726 N
Longitude - 77.1874 W
Map Source: US Fish & Wildlife Service - NWI Maps
Parrot Landing Needham Environmental, Inc.
Tax Parcel # 037514 Environmental Consultants USGS Hubert (NC) Quad
Wilmington, N.C.
Swansboro, NC
June 2012
03- 11- 008 /PCN Maps cdr

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Drawing Provided by: RSC Engineering, PLLC
Wetland Impact shown in Blue - 3,435 square feet or 0.079 acres
5
1" - 150'
1=022/2
Parrot Landing Needham Environmental, Inc.
Environmental Consultants Site Plan Tax Parcel # 037514 Wilmington, N.C. Wetland Impact
with
Swansboro, NC pact
January 2013
03- 11 -008/PCN Maps. cdr

Parrot Landing East
Phase 1
Post - Developed Impervious Information
Basin "W total to Pond Area (SIF)
Total Property Area 652964.4 14.99
Phase 1 Cover Description
4 Unit Proposed Buildings (2667sf)
5 Unit Proposed Buildings (3333 sf)
4 Unit Proposed Conc. Walk (461 sf)
5 Unit Proposed Conc. Walk (570 so
Proposed Asphalt
Concrete Curb and Gutter
Concrete
3 8,001.00
7 23,331.00
3 1,383.00
7 3,990.00
58,552.00
5,388.00
384.00
101,029.00 2.32
Total Impervious = 2.32
% Impervious = 15.47%

Parrot Landing East
Phase 1
Phase 1 Pond "N'
Stage - Storage Calculations for Proposed Wet Detention Pond
determine the storage capacity and characteristics of the proposed wet detention pond.
Pond side slope above Permanent Pool
3
0.5' above and 0.5' below Permanent Pool
10
Contour
Side Slope below planted shelf
3
Contour
incremental and cumulative storage of the
wet detention
pond per contour interval.
Stage/Storage Above Permanent Pool (Including Forebay)
3,673
Cumulative
0 -Bottom Elev.
Contour Incremental
Volume, S
4,054
Contour Area SF Volume (CF)
(CF)
5,271
23.5 11,152 0
0
-Permanent Pool 10105 92 Req'd
24.0 13,364 6,129
6,129
14,633
24.48 14,047 6,579
12,708
-Treatment Volume 12674.72 Req'd
24.92 14,787 6,344
19,051
1 year Volume 18892 00 Req'd
25.0 14,787 14,076
20,205
23.5
25.50 15,535 7,581
27,785
33,824 •Permanent Pool
26.0 16,283 15,535
35,740
6,129
27.0 17AW 17,066
52,806
14,787
Stage/Storage Total Pond (Including Forebay)
Forebay Only (20% of Total Pond)
Cumulative
Contour
Incremental
Volume, S
Contour
Area (SF)
Volume (CF)
(CF)
18.0
3,673
0
0 -Bottom Elev.
19.0
4,436
4,054
4,054
20.0
5,271
4,854
8,908
21.0
6,178
5,725
14,633
22.0
7,158
6,668
21,301
23.0
8,209
7,683
28,984
23.5
11,152
4,840
33,824 •Permanent Pool
24.0
13,364
6,129
39,953
25.0
14,787
14,076
54,029
26.0
16,283
15,535
69,564
27.0
17,850
17,066
86,630
Forebay Only (20% of Total Pond)
Average Pond Depth Calculation
[0.25 x (1+ Abot shelf / Aperm_pool)) + [((Abot shelf + Abot_pond) /2) x (Depth / Abot shelf))
3.5 Avgerage Depth
Cumulative
Contour
Incremental
Volume, S
Contour
Area (SF)
Volume (CF)
(CF)
18.0
735
0
0 «Bottom Elev.
19.0
887
811
811
20.0
1,054
971
1,782
21.0
1,236
1,145
2,927
22.0
1,432
1,334
4,260
23.5
2,230
2,746
7,007 - Forebay Volume
Average Pond Depth Calculation
[0.25 x (1+ Abot shelf / Aperm_pool)) + [((Abot shelf + Abot_pond) /2) x (Depth / Abot shelf))
3.5 Avgerage Depth

�I
II
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PARROT LANDING EAST
aa,w°, ci,,,
I'o� I
GRADING DRAINAGE
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INIa
h a IT A
PARROT LANCING, INC
AND EROSION CONTROL
,1 \\
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PARROT LANDING EAST
aa,w°, ci,,,
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GRADING DRAINAGE
"-
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h a IT A
PARROT LANCING, INC
AND EROSION CONTROL
r _- _.
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SwANSBORo MM19IP _ ONSLOW Co11NT1'
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SEDMIENT BASIN NOTES
� .ae�am � ux•�mon ww wro x
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PHASE 1 °� $11"'
� �R�o..iLC aW� STORMWATER POND
0
in Nm,H
193101A NWr IT PARROT LANDING. PAC DETAILS
IIAIVSf . IIORIN C.AROIIIIA 2l..>
rH01a SWANSBORO TOMSHIP ONSLOW COUNTY slumurw - I- 91027011=1 n OAI.I R tl
C3
Btp hp,PI1G [_y SWANSBORO. NORTH CAROLINA am
•
s�
N
TYPICAL 200 BCLFT. P ILM MWMM. loo an
ermna®rAa.om
> w....mx.W..ao.'.om�
'
Mr—.= a .mum .0 ...
W) O d dl�,ud
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of : • a�°mwu°�o r s � pp�pNp �g����T�p�AI
'FSrki(JiY"""'
SEDMIENT BASIN NOTES
� .ae�am � ux•�mon ww wro x
�1vR ertlr ®�Mroee�m� W .� e
>QRQitl.lOwb..YOIa RmWllw.A
Y0WW1.
'ES, MNTE O T LANDING EAST ,T, s
PHASE 1 °� $11"'
� �R�o..iLC aW� STORMWATER POND
0
in Nm,H
193101A NWr IT PARROT LANDING. PAC DETAILS
IIAIVSf . IIORIN C.AROIIIIA 2l..>
rH01a SWANSBORO TOMSHIP ONSLOW COUNTY slumurw - I- 91027011=1 n OAI.I R tl
C3
Btp hp,PI1G [_y SWANSBORO. NORTH CAROLINA am
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