20060961 Ver 1_Worksheets_20060718

Project Name: 40-Wade Ph 1
Project No. DW Q 06-0961
SUBMITTED DESIGN: 1 REQUIRED DESIGN.•
7/ 18/2006
elevations

Permanent Pool (ft) 382
Temporary Pool (ft) 384 2 ft. depth
areas
Permanent Pool SA (sq ft) 25436 25060 sq. ft.
Drainage Area (ac) 17.09
Impervious Area (ac) 13.7 80.2
Forebay(ft2) 3815 14.998427
High Marsh (ft2) 8903 35.0
Low Marsh (ft2) 8902 35.0
Micropool (ft2) 3816 15.002359
100
volumes
Temporary Pool (cu ft) 54030 47860 cu. ft.
other parameters
SA/DA 3.37 3.37
Orifice Diameter (in) 3 0.24 cfs drawdown
Design Rainfall (in) 1 2.6 day drawdown
Linear Interpolation of Correct SA/DA
Im ervious
Next Lowest 80
Project Impervious 80.2
Next Highest 90
0 ft. Permanent Pool Depth
SA/DA from Table
3.36
3.37
3.74
ok
ok
ok
ok
ok
ok
ok
ok

Project Name: 40-Wade Ph 1
Project No. DWQ 06-0961
SUBMITTED DESIGN: 2
7/ 18/2006
elevations
Permanent Pool (ft) 382
Temporary Pool (ft) 383.2
areas
Permanent Pool SA (sq ft) 18723
Drainage Area (ac) 10.17
Impervious Area (ac) 7.9
Forebay (ft2) 2808
High Marsh (ft2) 6553
Low Marsh (ft2) 6553
Micropool (ft2) 2809
volumes
Temporary Pool (cu ft)
23888
other parameters
SA/DA
Orifice Diameter (in)
Design Rainfall (in)
3.26
2.5
1
Linear Interpolation of Correct SA/DA
Im envious
Next Lowest 70
Project Impervious 77.7
Next Highest 80
REQUIRED DESIGN:
1.2 ft. depth
14392 sq. ft.
77.7
14.997597
35.0
35.0
15.00293 8
100
27655 cu. ft.
3.25
0.13 cfs drawdown
2.2 day drawdown
0 ft. Permanent Pool Depth
SA/DA from Table
2.88
3.25
3.36
ok
ok
ok
ok
ok
ok
check tempo
ok

Project Name: 40-Wade Ph 1
Project No. DWQ 06-0961
SUBMITTED DESIGN: 2 REQUIRED DESIGN:
7/18/2006
elevations

Permanent Pool (ft) 382
Temporary Pool (ft) 383.2 1.2 ft. depth ok
areas
Permanent Pool SA (sq ft) 18723 14392 sq. ft. ok
Drainage Area (ac) 10.17
Impervious Area (ac) 7.9 77.7 % -
Forebay(ft2) 2808 14.997597 % ok
High Marsh (ft2) 6553 35.0 % ok
Low Marsh (ft2) 6553 35.0 % ok
Micropool (ft2) 2809 15.002938 % ok
100
volumes
Temporary Pool (cu ft) 28000 27655 cu. ft. ok
other parameters
SA/DA 3.26 3.25 -
Orifice Diameter (in) 2.5 0.13 cfs drawdown -
Design Rainfall (in) 1 2.6 day drawdown ok
Linear Interpolation of Correct SA/DA
Im ervious
Next Lowest 70
Project Impervious 77.7
Next Highest 80
0 ft. Permanent Pool Depth
SA/DA from Table
2.88
3.25
3.36

DWO Project No.
DIVISION OF WATER QUALITY - 401 EXTENDED DETENTION (and POCKET*) WETLAND WORKSHEET
I. PROJECT INFORMATION (please complete the following information):
Project Name
Contact Person: ,~k,e.yhanit.r ~,~` Phone Number:
For projects with multiple basi s, specify which basin this worksheet applies to:
Permanent Pool Elevation 2. ft. (elevation of the orifice invert out)
Temporary Pool Elevation ft. (elevation of the outlet structure invert in)
Permanent Pool Surface Area Zr7 ~ ~ 3~Q sq. ft. (water surface area at permanent pool elevation)
Drainage Area ~ "] . pq ac. (on-site and off-site drainage to the basin)
Impervious Area 1 3 . "'t b ac. (on-site and off-site drainage to the basin)
Forebay Surface Area ~ i~_ sq. ft. (at permanent pool elevation approximately 15%)*
Marsh 0"-9" Surface Area R°I O 3 sq. ft. (at permanent pool elevation approximately 35%)*
Marsh 9"-18" Surface Area $°~ D 2 sq. ft. (at permanent pool elevation approximately 35%)*
Micro Pool Surface Area ?~~ ~ t~ sq. ft. (at permanent pool elevation approximately 15%)*
Temporary Pool Volume ~ p ~ cu. ft. (volume detained on top of the permanent pool)
SA/DA used • ?J ~ ~ ° (surface area to drainage area ratio)'
Diameter of Orifice in. (draw down orifice diameter)
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project
Applicants Initials
S U The temporary pool controls runoff from the 1 inch rain.
S ~_The basin side slopes are no steeper than 3:1.
~~_A planting plan for the marsh areas with plant species and densities is provided.
S }Vegetation above the permanent pool elevation is specified.
S ~-} An emergency drain is provided to drain the basin.
.S The temporary pool draws down in 2 to 5 days.
S'~Sediment storage is provided in the permanent pool.
.~~A sediment disposal area is provided.
Access is provided for maintenance.
A site specific, signed and notarized operation and maintenance agreement is provided. ~11
The drainage area (including any offsite area) is delineated on a site plan. See. S W rAP V'e~vV'~
S~ Access is provided for maintenance.
Plan details for the wetland are provided .
S Plan details for the inlet and outlet are provided.
A site specific operation and maintenance agreement, signed and notarized by the responsible party is provided (see
http://h2o.ehnr.state, nc.us/ncwetland s/oand m.doc).
* Pocket Wetlands have different design parameters and are only assumed to remove 35% TSS -See pp. 19 and 20 of the NC DENR
stormwater BMP Manual, April 1999. 10% open water, 50% high marsh, 40% low marsh.

DWQ Project No.
DIVISION OF WATER QUALITY - 401 EXTENDED DETENTION (and POCKET*) WETLAND WORKSHEET
I. PROJECT INFORMATION (please complete the following information):
Project Name
Contact Person: rx.. Phone Number:
For projects with multiple basin ,specify which basin this worksheet applies to:
D
Permanent Pool Elevation 3~ Z ft. (elevation of the orifice invert out)
Temporary Pool Elevation ~ 3~J~y~~~ . Z ft. (elevation of the outlet structure invert in)
Permanent Pool Surface Area 1 V , 1 L.~_ sq. ft. (water surface area at permanent pool elevation)
Drainage Area ~~
Impervious Area
Forebay Surface Area
Marsh 0"-9" Surface Area
Marsh 9"-18" Surface Area
Micro Pool Surface Area
~ n . L7 ac.
~ . q ac.
Z ~~ sq. ft
(„Q~_S ~ sq. ft
LQ, S 3 sq. ft
7 S~ b~ sq. ft
(on-site and off-site drainage to the basin)
(on-site and off-site drainage to the basin)
(at permanent pool elevation approximately 15%)*
(at permanent pool elevation approximately 35%)*
(at permanent pool elevation approximately 35%)*
(at permanent pool elevation approximately 15%)*
Temporary Pool Volume -~=--~i-"~~ cu. ft. (volume detained on top of the permanent pool)
SA/DA used ~. Z(„P h (surface area to drainage area ratio)*
Diameter of Orifice Z.. s in. (draw down orifice diameter)
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project
Applicants Initials
S.~_The temporary pool controls runoff from the 1 inch rain.
S ~ The basin side slopes are no steeper than 3:1.
S Hr A planting plan for the marsh areas with plant species and densities is provided.
S ~ Vegetation above the perm anent pool elevation is specified.
S~ An emergency drain is provided to drain the basin.
S}~_The temporary pool draws down in 2 to 5 days.
Sediment storage is provided in the permanent pool.
A sediment disposal area is provided.
Access is provided for maintenance.
A site specific, signed and notarized operation and maintenance agreement is provided.
The drainage area (including any offsite area) is delineated on a site plan. Sp„~ $WM.P Y~,,1~ o -~ .
Access is provided for maintenance. 1
Plan details for the wetland are provided.
_ Plan details for the inlet and outlet are provided.
^~A site specific operation and maintenance agreement, signed and notarized by the responsible party is provided (see
http://h2o.ehnr.state.nc.us/ncwetland s/oandm.doc).
* Pocket Wetlands have different design parameters and are only assumed to remove 35% TSS -See pp. 19 and 20 of the NC DENR
stormwater BMP Manual, April 1999. 10% open water, 50% high marsh, 40% low marsh.

~ WET [WETLAND] DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
[Wetland maintenance wording is bracketed. Please modify the document as appropriate.]
The wet [wetland] detention basin system is defined as the wet [wetland] detention basin, pretreatment
including forebays and the vegetated filter if one is provided.
Maintenance activities shall be performed as follows:
After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet [wetland] detention basin system for sediment accumulation, erosion, trash
accumulation, vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within
2 to 5 days as designed.
2. Repair eroded areas immediately, re-seed as necessary to maintain good vegetative cover, mow
vegetative cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to
maintain proper functioning.
4. Remove accumulated sediment from the wet [wetland] detention basin system semi-annually or when
depth is reduced to 75% of the original design depth (see diagram below). Removed sediment shall be
disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact
water quality (i.e. stockpiling near a wet [wetland] detention basin or stream, etc.).
The measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments.
When the permanent pool depth reads 2 •25 feet in the main pond, the sediment shall be removed.
[For stormwater wetlands: If the elevation of the marsh areas exceed the permanent pool elevation, the
sediment should be removed to design levels. This shall be performed by removing the upper 6 inches of
soil and stockpiling it. Then the marsh area shall be excavated six inches below design elevations.
Afterwards the stockpiled soil should be spread over the marsh surface. The soil should not be stockpiled
for more than two weeks.]
When the permanent pool depth reads 2 • ZS feet in the forebay [and micro-pool], the sediment shall be
removed.
BASIN DIAGRAM
(fill in the blanks)
p Permanent Pool Elevation 3g2
Sediment moval EI. ~lq•"1S~ 75%
-------------- -- Sediment Removal Elevation 31~ •1S 75%
Bottom E vation 31~ 5% _ _ -, ---~----•
FOREBAY MAIN POND
Page 1 of 2

~. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
[For wetlands: Wetland planting densities in the marsh areas should be maintained by replanting bare
areas as needed. Wetland plants should be encouraged to grow in the marsh areas.]
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment
through the emergency drain shall be minimized to the maximum extent practical.
7. All components of the wet [wetland] detention basin system shall be maintained in good working order.
8. Level spreaders or other structures that provide diffuse flow shall be maintained every six months. All
accumulated sediment and debris shall be removed from the structure, and a level elevation shall be
maintained across the entire flow spreading structure. Any down gradient erosion must be repaired and/or
replanted as necessary.
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print name: InJ r ~ ,..x JL ~--~~.C '~~ r -~ -' 0 ~ -.~ ~/G~
Title:
Address: 1 T ~ U 1..1 l S-~j'
Phone: q ~~ - ~$ ~ `
Signature:
Date: ~
~~
Note: The legally responsible party should not be a homeowners association unless more than 50% of the
• lots have been sold and a resident of the subdivision has been named the president.
I, 3 ~^AS> ~~' ~ c ~~~ ~ , a Notary Public for the State of I'Ud>~ ~~ ~~ ~---- ,
County of a. , do hereby certify that ~ ~-- S r'-.
personally appeared before me this ~ day of ~ ~ `-~- , ~, and acknowledge the due
execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand and
official seal,
n -~
~`~`~ ~ ~
~~ `~~
~
~~,~ ~r~'~~o~~
°
r P
~
o ~„~a~~~~~
~,
o
~' - o
~ 4 .~?,~ 6+

~

:
z ~
' ~
.,P ~~,. •,~- fl c~
~
G a.
~
e, l7 A';
m
'' Q a~
~ ~ ~
:~ it ~ e~
,
sw
~
' O as
~+

~'o '.
afl. J O
.~, y ~
/
~5a~ ~ ' <~ o ~ ®QT
~ A n~ ~®

SEAL
My commission expires ~ ` °~~ -~~~
Page 2 of 2

NORTH CAROLINA ECOSYSTEM ENHANCEMENT PROGRAM, NCEEP
IN-LIEU FEE REQUEST FORM
Revised 5/16/2006
Print this form, fill in requested information, sign and date, and either mail to NCEEP, 1652 Mail Service Center, Raleigh, NC
27699-1652, or fax to 919-715-2219. Attachments are acceptable for clarification purposes. All correspondence from
NCEEP will be to the Applicant, with a copy to the Applicant's Agent (if indicated).
CONTACT INFORMATION APPLICANT APPLICANT'S AGENT (optional) j
1. Business or Individual Name 'Wexford Developers, LLC Withers & Ravenel
.__ ___._..______..._____._..._._W.._~......._._ .............___._ ...... ._~..._ _._...._____..._.____~_~....._..___!
2. Street Address or P O Box 100 Weston Estates Way 111 MacKenan Drive
3. City, State, Zip
4. Contact Person Cary, NC 27513 ~~~ Cary, NC 27511
Todd Preuninger
5. Telephone Number 919-481-3000 j 919-460-6006
6. Fax Number 919-677-8600 ~ 919-238-2099 _~ __...~.......__..-__..___.
7. E-Mail Address o tional
(p )
i [e-mail]
[e-mail] ~
,.

PROJECT INFORMATION
i ,
8. Project Name ~
L
I _...... _ ...... _....__...._ _
Wade
Fo rtY ,
~
.......~_............~..__.._ ...................._......................_......................_.................._._...................___
__ ......................_..._.._
...
9. Project Location (nearest town, city) ._
.._
..._......................_..............._._..................._..........__......_....................._..................... _...................._......................_..........._........_........
Ralei h - - -~<~~
.~,
10. Lat-Long Coordinates (optional) ~ 35.8075681 °N & 78.7296585°W
( .................._...................._..._.............._......................_......................_................_...._................._.__......................_.................__.............
11. Project County ..___..................._...................._......................_......._............_....................._...................__.............._.....__..................__ _.................._...._.............._....................._......... 1
Wake
12. River Basin
Neuse
13. Cataloging Unit (8-digit) i
03020201
14. Ri aria
n Wetland Im act ac. e. .0.13

p p ( ) ( g ' ) ~

---. .. __... _ _.........._ _.... _

s
0.0315 ac
i 15. Non-Riparian Wetland Impact (ac.)
16. Coastal Marsh Impact (ac.)
__........L...
17. Stream Impacts (ft.) (e.g 1 234) ...~ ..................__......,,.,,.,..,._..,..,,,.,.,....._.,...,,...,,,..._,....,,,,.........~......,....,..,._..,,.,,,.......,..._.,....... ___..._..____..._~.._....._~. __. _..
G Warm ~ Cool ~ Cold 1
.............. .... .............. ........... ...... ........ ........... ......._ ....~ 3
i j 252 ft I i ~
__ ..................._...................._............_......._................._............_......_........_...._...._...................__.................._...................fi...i
18. Buffer Impact-Zone 1 (sq. ft.) (e.g. 12,345) ........_...._................__................._......,............._..i.............._..,.............__...................__...................~_...__ _ ___..... ___.._....,___._..._._. ~...j
; Proposed - 27,570 sq.ft. Mitigation (x3) - 82,710 sq.ft.
' 19. Buffer Impact-Zone 2 (sq. ft.) j Proposed 20,339 sq.ft.
Mitigation (x3) - 61,017 sq.ft.
IMPORTANT _
Signature of Applicant or Agent:
Check (~) below if this request is a: j
,-~G J jig----'~'
j ^ revision to a current acceptance, or
I -~
Date: (,~ ~ ~ ~~ (~
^ re-submission of an expired acceptance
Buffer mitigation applicable only in the Neuse, Tar-Paml ico and Catawba river basins, and the Randleman Lake Water
Supply Watershed. For help in determining the Cataloging Unit, go to EPS's "Surf Your Watershed" web page:
http://cfpub.epa.gov/surf/locate/index.cfm Direct all questions to Chris Mankoff at 919-716-1921 or
chris.mankoff@ncmail. net
n
~~