20080859 Ver 1_More Info Received_20081216

KELLER ENVIRONMENTAL
ENVIRONMENTAL CONSULTANTS
7921 Haymarket Lane, Raleigh, NC 27615
[phone]
Fax[phone]
LETTER OF TRANSMITTAL
TO: DWQ 401 Wetlands Unit
WE ARE SENDING YOU THE FOLLOWING:
? Pre-construction Notification (PCN) ® Plans
® Documents ? Other
? Maps

1

2?'?J8
i7Era'a
WETLANDS AND STORMWATER BRANCH
? Specifications
THESE ARE TRANSMITTED AS CHECKED BELOW:
® For approval ® As requested ® For review & comment
? Please reply ? See below ® For your files
Regular Mail ? Fed-Ex Delivered by KE Picked Up
COPIES DATE DESCRIPTION
1 12-15-08 CD
5 12-15-08 Re-Submittal Letter
5 12-8-08 Skylark Avenue Report
5 - Water Management Calculations
5 11-14-08 DWQ RFMI Letter
5 11-24-08 Site Plan Sheets (15)

THANK YOU!
Rec'd By:
DATE: December 16, 2008
ATTENTION: Staff
RE: Audubon Villages; 08-0859
Signed .11_?
Cc: Joanne Steenhuis, DWQ Wilmington Regional Office
KELLER ENVIRONMENTAL
ENVIRONMENTAL CONSULTANTS
7921 Haymarket Lane, Raleigh, NC 27615
[phone]
Fax[phone]
LETTER OF TRANSMITTAL
TO: DWQ Wilmington Regional Office
Wilmington, NC 28405
127 Cardinal Drive Extension
DATE: December 16, 2008
ATTENTION: Joanne Steenhuis
RE: Audubon Villages; 08-0859
WE ARE SENDING YOU THE FOLLOWING:
? Pre-construction Notification (PCN) ® Plans ? Maps ? Specifications
® Documents ? Other
THESE ARE TRANSMITTED AS CHECKED BELOW:
® For approval ® As requested ® For review & comment
? Please reply ? See below ® For your files
Regular Mail ZI Fed-Ex U Delivered by KE
Picked Up
COPIES DATE DESCRIPTION
1 12-15-08 CD
1 12-15-08 Re-Submittal Letter
1 12-8-08 Skylark Avenue Report
1 - Water Management Calculations
1 11-14-08 DWQ RFMI Letter
1 11-24-08 Site Plan Sheets (15)

THANK YOU!
Rec' d By: Signed
KELLER ENVIRONMENTAL
ENVIRONMENTAL CONSULTANTS
7921 Haymarket Lane, Raleigh, NC 27615
[phone]
Fax[phone]
LETTER OF TRANSMITTAL
TO: US Army Corps of Engineers
DATE: December 16, 2008
ATTENTION: Mickey Sugg
RE: Audubon Villages; 2008-01521
WE ARE SENDING YOU THE FOLLOWING:
? Pre-construction Notification (PCN) ® Plans ? Maps ? Specifications
® Documents ? Other
THESE ARE TRANSMITTED AS CHECKED BELOW:
® For approval ® As requested ® For review & comment
? Please reply ? See below ® For your files
? Regular Mail ® Fed-Ex ? Delivered by KE ? Picked Up
COPIES DATE DESCRIPTION
1 12-15-08 CD
1 12-15-08 Re-Submittal Letter
1 12-8-08 Skylark Avenue Report
1 - Water Management Calculations
1 11-14-08 DWQ RFMI Letter
1 11-24-08 Site Plan Sheets (15)
THANK YOU!
Rec' d By: Signed
f?

Michael F. trvstcy, Gowinor
Walliam G. Ross Jr'., rerretaay
Noah Carolina Department of Environment and Natural Resources
C oleen 14, Sullins, Director
Division of Water QuaNty
November 14, 2008
r°. Nils L, Aellburg
4628 M C?."'i'?.ata Highway
Kitty Haw- NC 27949
Subject Pr6: )erty. Audubon Village
hi( iu
:A Creek [030504, 21 35-t 1
REQUYS':'' FOR MORE INFORMATION
Dear r. L,, j den urg
On May 2:''2008, the Division of Water Quality (1 Q) received your application dated April
21, 2008, lr' f 11. or otherwise impact 5,47 acres of 404/wetland to construct the proposed
residentia -c -3rl°rrnerc°ial development at the site, The W has determined that your
ap lieatiw vas incomplete and/or provided inaccurate information as discussed below. The
DWQ will ::q,'_ 'Ire additional infom ation in order to process your application to impact protected
wetlands a . /or strearns on the subject; property. Therefore, unless we, receive five copies of the.
additional ':`c?zr?atioa? requested 'below, w ?? 1f 1;)1ace this project on hold as incomplete until we
receive thi a 1d tional information, if we do not receive the requested infbrmation, your project
will be fou Ially returned as incomplete, please provide the fbllt?vving information so that we
may co tir,. i. to review your project.
AddltlonalJ formatlo Requested:
L , pl ?:. r--s brrlit your site plays on full plan sheets at a scale of no smaller than 1.}x,=50'
wit W- Po raphic contours shown,
2, pleh. e provide building envelopes for all tots with wetlands € n the site plans.
1 Ply` indicate proposed lot layout as an overlay on the site play.
4. The l v, ,ill not all. your proposed replacement of native sails with non-native sails
_.?
tof.!-,
: Jitale your proposed ,storm-water P plan.
5. pled e provide an inventory of imperviousness surfaces in each drainage area.. The
inv ntory should include all proposed building footprints, roads, driveways, sidewalks,
401 Oversight/Express Rer •.m Permitting Uh%it AdJ,?Lfrall'y
1650 Mai[ Service C;en,':f =teig h, North Carolina 2'7699-1650
2321 Crabtree 250, Raleigh, North Carolina 27604
Phone; 319-•733-I78611°:'s.'' : '-19-733-68931 lnterasct, LI ft f±2 eenrstatc tic,tasl ewe gn
An Equal C7ppogunity Agl,r;. ;,ri,.e Action Employer.- 509/a ReGyAdll0%Past Consumer Pralaex
Mr. Nils L adenburg
Page 2 of 2
November 14, 2009
gray,-Sut aced areas, amenity= areas, etc, A for water Management: Plan (SMP) Must
be 1°. v ded for any drainage areas that exceed 24 percent imperviousness, For each
B ?.I provide a completed BMP Supplement Form with all the required items (see
tm). Per NCAC 2l3 151: 02H.1000 a "drainage .0p forrn?,h
t
arer. is defined as "the entire area contributing sizrfa:ce runoff to a single point."
Please sation within 30 calendar days of the date of this letter, if we do not
E t
?tlst ? ,. this ?nfartr?
receive thr. egnested information within 34 calendar days of the date of this letter, your project
will be wit drawn and you will reed to reapply with a new application and a new fee.
This letter', ;ilv addresses the application review and does not authorize any impacts to wetlands„
waters or 'ttected buffers. Please be aware that any impacts requested within your application
are not auti :sized (at this time) by the 1 Q. Please call s. Cyndi Karoly or r. Ian
McMillan 1,919-733-1786 if you have any questions regarding or would like to set. up a meeting
to discuss ' lks matter.
Since?rw,
i
i
Cyndi Karoly', Supen4sor
i' 401 Oversight/Express Review Permitting Unit
CBK/Ym
cc: Joa xe Steenhuis, DWQ Wilmington Regional Office
USA CE Wilmington Regulatory Field Office
1 ?l Copy
A t Matthews, D Branch Manager
Iav l.eller Keller Environmental, 7921 Haymarket Lane, Raleigh, NC 27615
? 5
:I
1,.? ,... .., _, _ filename UiitiSS?}??ttdut?unv'iilage(C;Hrterc?)C3r?mmF?oid
KELLER ENVIRONMENTAL
ENVIRONMENTAL CONSULTANTS
7921 Haymarket Lane, Raleigh, NC 27615
[phone]
Fax[phone]
LETTER OF TRANSMITTAL
TO: DWQ 401 Wetlands Unit
DATE: December 16, 2008
ATTENTION: Staff
RE: Audubon Villages; 08-0859
WE ARE SENDING YOU THE FOLLOWING:
? Pre-construction Notification (PCN) ® Plans ? Maps ? Specifications
® Documents ? Other
THESE ARE TRANSMITTED AS CHECKED BELOW:
® For approval ® As requested ® For review & comment
? Please reply ? See below ® For your files
? Regular Mail ? Fed-Ex ® Delivered by KE ? Picked Up
COPIES DATE DESCRIPTION
1 12-15-08 CD
5 12-15-08 Re-Submittal Letter
5 12-8-08 Skylark Avenue Report
5 - Water Management Calculations
5 11-14-08 DWQ RFMI Letter
5 11-24-08 Site Plan Sheets (15)

THANK YOU!
Rec' d By:
Signed
Cc: Joanne Steenhuis, DWQ Wilmington Regional Office
KELLE1 _1 '_' - -1 TAIL
ENVIRONMENTAL CONSULTANTS
December 15, 2008
Mickey Sugg
US Army Corps of Engineers
Wilmington Regulatory Field Office
69 Darlington Avenue
Wilmington, NC 28403
Re: Audubon Villages
Keller Environmental Job No. 0669
COE Action ID: 2008-01521
DWQ Project # 08-0859
Carteret County, North Carolina
Dear Mr. Sugg & Ms. Steenhuis:
Joanne Steenhuis
NC Division of Water Quality
Wilmington Regional Office
127 Cardinal Drive Extension
Wilmington, NC 28405
Thank you for your recent assistance with this Audubon Villages project. We are
pleased to submit the following project information to you for US Army Corps of
Engineers (COE) 404 and NC Division of Water Quality (DWQ) 401 approval. After
discussions and meetings with you and project staff, we have addressed the items
referenced below.
Jurisdictional Wetland Avoidance & Minimization:
Additional wetland avoidance was accomplished by redesigning the commercial
shopping center. The majority of the proposed impacts (3.75 Ac.) are associated with
Wetland Impact One in the front area of the proposed Retail Center on Harkers Island
Road. Wetland Impacts Two (0.12 Ac.) and Three (0.01 Ac.) are associated with
Skylark Avenue and the rear Service Drive, respectively. Please refer to attached
Audubon Villages engineering plans and Skylark Avenue road placement report. The
last plan sheet (W-1) details the proposed wetland impacts. Plan Sheet D-2 illustrates
the retaining wall planned for these two areas to minimize impacts. The small wetland
area (0.5 Ac.) immediately north of Skylark Avenue has been avoided through
redesigning that office/retail area. Through these above efforts, the proposed wetland
impacts have been reduced to 3.88 Acres and 7.22 Acres will be preserved.
COE 404 & DWQ 401 Authorization
Audubon Villages Re-Submittal
December 15, 2008
Page 2 of 3
DWQ Comments:
We are submitting the additional information that we received on November 19, 2008
requested from written correspondence on November 14, 2008. We have addressed your
included written comments in the following paragraphs.
1. Please re-submit your site plans on full plan sheets at a scale of no
smaller than 1 "-50' with topographic contours shown.
Please refer to the attached engineering plans. They include the following
sheets:
C-2: Phasing plan and lot build upon area exhibit.
C-8 to C-15: 60-scale details of the proposed residential and commercial
sites with existing and proposed topography.
C-36: Overall plan (not-to-scale) of proposed residential and commercial
sites.
D-1: Commercial site stormwater plan. The proposed BMP areas are
located adjacent to Skylark Avenue. Stormwater will be conveyed from
the commercial site to these areas. This will be done by pumping the
stormwater through the Skylark Avenue right-of-way to reduce
permanent/temporary wetland impacts.
D-2: Exhibit detail of retaining wall and transition areas.
S-1: Commercial site plan (50-scale) south.
S-2: Commercial site plan (50-scale) north.
W-1 Commercial site plan (50-scale) with proposed (3) wetland impact
areas.
2. Please provide building envelopes for all lots with wetlands on the
site plans.
Please refer to Sheets D-1, S-1, S-2, and W-1 for details of the proposed
commercial site and the wetland areas.
3. Please indicate proposed lot layout as an overlay on the site plan.
Please refer to Sheets D-1, S-1, S-2, and W-1 for details of the proposed
commercial site and the wetland areas. Details of the residential site have also been
included.
COE 404 & DWQ 401 Authorization
Audubon Villages Re-Submittal
December 15, 2008
Page 3 of 3
4. The DWQ will not allow your proposed replacement of native soils
with non-native soils to facilitate your proposed stormwater BMP
plan.
We understand your concern regarding the soil replacement. EDA staff is
currently coordinating with DENR staff regarding stormwater treatment. Upon receiving
401 approval for the proposed wetland impacts, detailed stormwater plans and details
will be finished and submitted to the appropriate parties.
5. Please provide an inventory of impervious surfaces in each drainage
area.
Please refer to the attached Water Management Calculation Worksheets and
Sheets S-1, and S-1 for a breakdown of the drainage areas. Ms. Mary J. Naugle is
currently reviewing the stormwater plans for Phase one and other involved areas and
coordinating with EDA personnel. The southern retail area is proposed to have 6.85
Acres (50%) BUA. The northern retail area is proposed to have 2.90 Acres (53%) BUA.
If you should have questions or require additional clarification please feel free to contact
me at 844-7437 (office), 749-8259 (cell) or email: _j. Thank
you again for your assistance.
Sincerely,
Keller Environmental, LLC

Jay Keller
Principal
Cc: DWQ 401 Wetlands Unit (5 copies)
EDA, pa
Nils Ladenburg
Attachments: please refer to transmittal letter
Basin Information Drainage Area 1 Drainage Area 2 Drainage Area 3
Receiving Stream Name So. Leopard Creek So. Leopard Creek So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3
Total Drainage Area (so 75089 87186 50072
On-site Drainage Area (so 75089 87186 50072
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 52562 26391 21803
Impervious* Area (total) 70.0% 30.3% 43.5%
Impervious* Surface Area Drainage Area 1 Drainage Area 2 Drainage Area 3
On-Site Buildings (so Undetermined 0 2738
On-Site Streets (so Undetermined 18703 17465
On-Site Parking (so Undetermined 0 0
On-Site Sidewalks (so Undetermined 7688 1600
Other on-site (so Undetermined 0
Off-Site (so 0 0
Total (so: 52562 26391 21803
Basin Information Drainage Area 4 Drainage Area 5 Drainage Area 6
Receiving Stream Name So. Leopard Creek So. Leopard Creek So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3
Total Drainage Area (so 61052 102071 66677
On-site Drainage Area (so 61052 102071 66677
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 31665 41363 33246
Impervious* Area (total) 51.9% 40.5% 49.9%
Impervious" Surface Area Drainage Area 4 Drainage Area 5 Drainage Area 6
On-Site Buildings (so 14179 7240 17087
On-Site Streets (so 13993 28062 12404
On-Site Parking (so 0 0 0
On-Site Sidewalks (so 3493 6061 3755
Other on-site (so 0 0 0
Off-site (so 0 0 0
Total (so: 31665 41363 33246
Basin Information Drainage Area 7 Drainage Area 8 Drainage Area 9
Receiving Stream Name So. Leopard Creek So. Leopard Creek So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3
Total Drainage Area (so 93223 52832 98142
On-site Drainage Area (so 93223 52832 98142
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 47451 25677 44362
Impervious* Area (total) 50.9% 48.6% 45.2%
Impervious* Surface Area Drainage Area 7 Drainage Area 8 Drainage Area 9
On-Site Buildings (so 29013 12272 30410
On-Site Streets (so 14516 10405 13952
On-Site Parking (so 0 0 0
On-Site Sidewalks (so 3922 3000 0
Other on-site (so 0 0 0
Off-Site (so 0 0 0
Total (so: 47451 25677 44362
Basin Information Drainage Area 10 Drainage Area 11 Drainage Area 12
Receiving Stream Name So. Leopard Creek So. Leopard Creek So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3
Total Drainage Area (so 79280 82578 47403
On-site Drainage Area (so 79280 82578 47403
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 36648 35299 25762
Impervious* Area (total) 46.2% 42.7% 54.3%
Impervious" Surface Area Drainage Area 10 Drainage Area 11 Drainage Area 12
On-Site Buildings (so 7333 24151 3777
On-Site Streets (so 23795 8867 17641
On-Site Parking (so 0 0 0
On-Site Sidewalks (so 5520 2281 4344
Other on-site (so 0 0 0
Off-site (so 0 0 0
Total (so: 36648 35299 25762
Basin Information Drainage Area 13 Drainage Area 14 Drainage Area 15
Receiving Stream Name So. Leopard Creek So. Leopard Creek So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3
Total Drainage Area (so 110383 118498 131475
On-site Drainage Area (so 110383 118498 131475
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 51756 13452 43212
Impervious* Area (total) 46.9% 11.4% 32.9%
Impervious* Surface Area Drainage Area 13 Drainage Area 14 Drainage Area 15
On-Site Buildings (so 30413 13452 30898
On-Site Streets (so 17283 0 9914
On-Site Parking (so 0 0 0
On-Site Sidewalks (so 4060 0 2400
Other on-site (so 0 0 0
Off-Site (so 0 0 0
Total (so: 51756 13452 43212
Basin Information Drainage Area 16 Drainage Area 17 Drainage Area 18
Receiving Stream Name So. Leopard Creek So. Leopard Creek So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3
Total Drainage Area (so 93970 113207 99053
On-site Drainage Area (so 93970 113207 99053
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 42224 57241 56603
Impervious* Area (total) 44.9% 50.6% 57.1%
Impervious" Surface Area Drainage Area 16 Drainage Area 17 Drainage Area 18
On-Site Buildings (so 26861 34949 27414
On-Site Streets (so 12363 18460 24189
On-Site Parking (so 0 0 0
On-Site Sidewalks (so 3000 3832 5000
Other on-site (so 0 0 0
Off-site (so 0 0 0
Total (so: 42224 57241 56603
Basin Information Drainage Area 19 Drainage Area 20a Drainage Area 20b
Receiving Stream Name So. Leopard Creek So. Leopard Creek So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3
Total Drainage Area (so 83401 129433 79319
On-site Drainage Area (so 83401 129433 79319
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 36106 56939 20984
Impervious* Area (total) 43.3% 44.0% 26.5%
Impervious* Surface Area Drainage Area 19 Drainage Area 20a Drainage Area 20b
On-Site Buildings (so 19042 35499 6765
On-Site Streets (so 14164 16926 10821
On-Site Parking (so 0 0 0
On-Site Sidewalks (so 2900 4514 3398
Other on-site (so 0 0 0
Off-Site (so 0 0 0
Total (so: 36106 56939 20984
Basin Information Drainage Area 21 Drainage Area 22 Drainage Area 23
Receiving Stream Name So. Leopard Creek So. Leopard Creek So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3
Total Drainage Area (so 87259 97809 102274
On-site Drainage Area (so 87259 97809 102274
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 40554 49197 11547
Impervious* Area (total) 46.5% 50.3% 11.3%
Impervious" Surface Area Drainage Area 21 Drainage Area 22 Drainage Area 23
On-Site Buildings (so 19566 29804 11547
On-Site Streets (so 17040 15593 0
On-Site Parking (so 0 0 0
On-Site Sidewalks (so 3948 3800 0
Other on-site (so 0 0 0
Off-site (so 0 0 0
Total (so: 40554 49197 11547
Basin Information Drainage Area 24a Drainage Area 24b Drainage Area 24c
Receiving Stream Name So. Leopard Creek So. Leopard Creek So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3
Total Drainage Area (so 102559 55541 23465
On-site Drainage Area (so 102559 55541 23465
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 57665 32277 10316
Impervious* Area (total) 56.2% 58.1% 44.0%
Impervious* Surface Area Drainage Area 24a Drainage Area 24b Drainage Area 24c
On-Site Buildings (so 0 8405 0
On-Site Streets (so 0 13727 10316
On-Site Parking (so 53693 0 0
On-Site Sidewalks (so 0 0 0
Other on-site (so 3972 10145 0
Off-Site (so 0 0 0
Total (so: 57665 32277 10316
Basin Information Drainage Area 25 Drainage Area 26 Drainage Area 27
Receiving Stream Name So. Leopard Creek So. Leopard Creek So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3
Total Drainage Area (so 67511 70650 59514
On-site Drainage Area (so 67511 70650 59514
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 31345 26345 32459
Impervious* Area (total) 46.4% 37.3% 54.5%
Impervious" Surface Area Drainage Area 25 Drainage Area 26 Drainage Area 27
On-Site Buildings (so 6219 19741 15903
On-Site Streets (so 18534 6604 12996
On-Site Parking (so 0 0 0
On-Site Sidewalks (so 6592 0 3560
Other on-site (so 0 0 0
Off-site (so 0 0 0
Total (so: 31345 26345 32459
Basin Information Drainage Area 28 Drainage Area 29 Drainage Area 30
Receiving Stream Name So. Leopard Creek So. Leopard Creek So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3
Total Drainage Area (so 106586 93045 97068
On-site Drainage Area (so 106586 93045 97068
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 51528 58942 51021
Impervious* Area (total) 48.3% 63.3% 52.6%
Impervious* Surface Area Drainage Area 28 Drainage Area 29 Drainage Area 30
On-Site Buildings (so 29406 30532 22288
On-Site Streets (so 17806 24230 24173
On-Site Parking (so 0 0 0
On-Site Sidewalks (so 4316 4180 4560
Other on-site (so 0 0 0
Off-Site (so 0 0 0
Total (so: 51528 58942 51021
Basin Information Drainage Area 31 Drainage Area 32 Drainage Area 33
Receiving Stream Name So. Leopard Creek So. Leopard Creek So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3
Total Drainage Area (so 103866 112870 142992
On-site Drainage Area (so 103866 112870 142992
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 47872 48332 29350
Impervious* Area (total) 46.1% 42.8% 20.5%
Impervious" Surface Area Drainage Area 31 Drainage Area 32 Drainage Area 33
On-Site Buildings (so 21435 30731 29350
On-Site Streets (so 21241 14005 0
On-Site Parking (so 0 0 0
On-Site Sidewalks (so 5196 3596 0
Other on-site (so 0 0 0
Off-site (so 0 0 0
Total (so: 47872 48332 29350
Basin Information Drainage Area 34 Drainage Area 35 Drainage Area 36
Receiving Stream Name So. Leopard Creek So. Leopard Creek So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3
Total Drainage Area (so 74256 123511 109798
On-site Drainage Area (so 74256 123511 109798
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 33904 57459 51596
Impervious* Area (total) 45.7% 46.5% 47.0%
Impervious* Surface Area Drainage Area 34 Drainage Area 35 Drainage Area 36
On-Site Buildings (so 19741 31350 32023
On-Site Streets (so 11803 21381 15761
On-Site Parking (so 0 0 0
On-Site Sidewalks (so 2360 4728 3812
Other on-site (so 0 0 0
Off-Site (so 0 0 0
Total (so: 33904 57459 51596
Basin Information Drainage Area 37 Drainage Area 38 Drainage Area 39a
Receiving Stream Name So. Leopard Creek So. Leopard Creek So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3
Total Drainage Area (so 70272 127131 124449
On-site Drainage Area (so 70272 127131 124449
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 26839 56845 56671
Impervious* Area (total) 38.2% 44.7% 45.5%
Impervious" Surface Area Drainage Area 37 Drainage Area 38 Drainage Area 39a
On-Site Buildings (so 17927 36107 29881
On-Site Streets (so 6812 17138 23138
On-Site Parking (so 0 0 0
On-Site Sidewalks (so 2100 3600 3652
Other on-site (so 0 0 0
Off-site (so 0 0 0
Total (so: 26839 56845 56671
Basin Information Drainage Area 39b Drainage Area 40 Drainage Area 41
Receiving Stream Name So. Leopard Creek So. Leopard Creek So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3
Total Drainage Area (so 106057 96072 101870
On-site Drainage Area (so 106057 96072 101870
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 51736 46282 28521
Impervious* Area (total) 48.8% 48.2% 28.0%
Impervious* Surface Area Drainage Area 39b Drainage Area 40 Drainage Area 41
On-Site Buildings (so 33449 31403 28521
On-Site Streets (so 14635 11875 0
On-Site Parking (so 0 0 0
On-Site Sidewalks (so 3652 3004 0
Other on-site (so 0 0 0
Off-Site (so 0 0 0
Total (so: 51736 46282 28521
Basin Information Drainage Area 42 Drainage Area 43 Drainage Area 44
Receiving Stream Name So. Leopard Creek So. Leopard Creek So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3
Total Drainage Area (so 94726 123465 118002
On-site Drainage Area (so 94726 123465 118002
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 15085 56233 46474
Impervious* Area (total) 15.9% 45.5% 39.4%
Impervious" Surface Area Drainage Area 42 Drainage Area 43 Drainage Area 44
On-Site Buildings (so 15085 31659 29037
On-Site Streets (so 0 21210 13437
On-Site Parking (so 0 0 0
On-Site Sidewalks (so 0 3364 4000
Other on-site (so 0 0 0
Off-site (so 0 0 0
Total (so: 15085 56233 46474
Basin Information Drainage Area 45 Drainage Area 46 Drainage Area 47
Receiving Stream Name So. Leopard Creek So. Leopard Creek So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3
Total Drainage Area (so 82955 96229 139272
On-site Drainage Area (so 82955 96229 139272
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 27485 42528 97490
Impervious* Area (total) 33.1% 44.2% 70.0%
Impervious* Surface Area Drainage Area 45 Drainage Area 46 Drainage Area 47
On-Site Buildings (so 21002 25199 Undetermined
On-Site Streets (so 6483 13729 Undetermined
On-Site Parking (so 0 0 Undetermined
On-Site Sidewalks (so 0 3600 Undetermined
Other on-site (so 0 0 Undetermined
Off-Site (so 0 0 0
Total (so: 27485 42528 97490
Basin Information Drainage Area 48 Drainage Area 49 Drainage Area 50
Receiving Stream Name So. Leopard Creek So. Leopard Creek So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3
Total Drainage Area (so 112875 223126 477709
On-site Drainage Area (so 112875 223126 477709
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 79015 156188 334396
Impervious* Area (total) 70.0% 70.0% 70.0%
Impervious" Surface Area Drainage Area 48 Drainage Area 49 Drainage Area 50
On-Site Buildings (so Undetermined Undetermined Undetermined
On-Site Streets (so Undetermined Undetermined Undetermined
On-Site Parking (so Undetermined Undetermined Undetermined
On-Site Sidewalks (so Undetermined Undetermined Undetermined
Other on-site (so Undetermined Undetermined Undetermined
Off-site (so 0 0 0
Total (so: 79015 156188 334396
Basin Information Drainage Area 51 Drainage Area 52 Drainage Area 53
Receiving Stream Name So. Leopard Creek So. Leopard Creek Whitehurst Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-7-3 SA; HQW
21-35-1-12-2
Total Drainage Area (so 728040 322147 919189
On-site Drainage Area (so 728040 322147 919189
Off-site Drainage Area (so 0 0 0
Existing Impervious* Area (so 0 0 0
Proposed Impervious* Area (so 509628 225503 643432
Impervious* Area (total) 70.0% 70.0% 70.0%
Impervious* Surface Area Drainage Area 51 Drainage Area 52 Drainage Area 53
On-Site Buildings (so Undetermined Undetermined Undetermined
On-Site Streets (so Undetermined Undetermined Undetermined
On-Site Parking (so Undetermined Undetermined Undetermined
On-Site Sidewalks (so Undetermined Undetermined Undetermined
Other on-site (so Undetermined Undetermined Undetermined
Off-Site (so 0 0 0
Total (so: 509628 225503 643432
Basin Information Drainage Area 54
Receiving Stream Name So. Leopard Creek

Receiving Stream Class & Index No. SA; HQW
21-35-1-7-3
Total Drainage Area (so 594323
On-site Drainage Area (so 594323
Off-site Drainage Area (so 0
Existing Impervious* Area (so 0
Proposed Impervious* Area (so 356594
Impervious* Area (total) 60.0%
Impervious" Surface Area Drainage Area 48
On-Site Buildings (so Undetermined
On-Site Streets (so Undetermined
On-Site Parking (so Undetermined
On-Site Sidewalks (so Undetermined
Other on-site (so Undetermined
Off-site (so 0
Total (so: 356594
3a
forth carolina
Architects • Engineers • Planners
December 8, 2008
TO: Mr. Jay Keller
Keller Environmental, LLC
7921 Haymarket Lane
Raleigh, NC 27615
FROM: Gavin L. Davis
Re: Skylark Avenue Location:
Mr. Keller,
The location of Skylark Avenue was determined from guidelines for roadway design
established by NCDOT to provide a minimum distance of 150' from existing
driveways/intersections and proposed driveways/intersections. Due to the anticipated
volume of traffic and size of the proposed intersection EDA expects NCDOT to strictly
enforce the 150' minimum distance. We evaluated a number of alternative roadway
layouts for Skylark including along the northern property line of Commercial Tract Two,
along the northern property line of the Parker Tract and the proposed location. Upon
evaluation we determined that the proposed location best meet NCDOT requirements,
minimized noise and traffic impacts on adjacent land owners and limited wetland
impacts to less than Y4 acre for the roadway. Further, NCDOT has reviewed and
accepted the alignment at two reviews (Sketch Plan Technical Review and Preliminary
Plat Technical Review).
If you have any questions regarding this matter please do not hesitate to call or email
me.
Respectfully,
Gavin L. Davis
Raleigh Location:
3739 National Drive, Suite 128
Raleigh, NC 27612
Phone: [phone]
Fax: [phone]
e-mail: edargEDApa.com
Morehead City Location:
4206 Bridges Street Ext, Suite C
Morehead City, NC 28557
Phone: [phone]
Fax: [phone]
e-mail: [e-mail]