HomeMy WebLinkAboutSW8120110_COMPLIANCE_20120206 (2)STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
COMPLIANCE EVALUATION INSPECTION
DOC DATE
o2O
YYYYMMDD
Stormwater Treatment Narrative
Wellington Grove Apartments
Wellington Grove, LLC owns a 14.39 acre tract located off of existing Carolina forest
Blvd approximately 900 feet North of Western Blvd within the city limits of Jacksonville,
NC. The tract is currently undeveloped. Wellington Grove, LLC (managed by
Wellington Grove Housing of Jacksonville Inc.) plans to construct an apartment complex.
The proposed development will include 88 one, two and three bedroom apartment units
in six buildings with Stormwater Treatment Facilities (Wet Detention Basin) located on
site. The Treatment Facilities will be sized to handle the proposed development plus
access roadways and associated parking.
The project site is located in the White Oak River basin. The tract is currently wooded
with most runoff draining to adjacent ditches on the Southeast and which lie along the
boundary of the tract. From there the flow is into a nearby unnamed -tributary of Half
Moon Creek (C; NSW). The project site is adjacent to 404 (non -coastal) wetlands, but
only a small portion of these wetlands extend to within the tract boundaries. The project
has been designed to avoid disturbing the existing wetlands. The site is relatively flat
(0.6%-1.5% slopes).
The proposed development activities are high density (percent impervious > 24%);
therefore, stormwater treatment facilities are required. The attached Stormwater Plan
includes a wet detention basin located within the designed Stormwater lot at the eastern
section of the site. This pond has been designed to meet the NPDES Phase II Rules, and
according to current BMP Manual Specifications. The stormwater pond has been
designed with a connected forebay and main pond. Runoff generated from impervious
surfaces on site will be diverted to the forebay via inlets and underground storm drain
pipes. Treated Stormwater will exit the main pond via the outlet structure124" CMP
outlet pipe and into the nearby drainage ditch along the Southern boundary of the tract.
FEB 0 6.2012
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�,�\ �;-. ,_ 4 �! ! _S:`l� �� �1 l L •� 1 t 0 1 KILOMETER
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Name: JACKSONVILLE NORTH'
Date: 01 /10/ 12
Scale: 1 inch = 2,000 ft. FEB 0 b.20i2
Copyngnt «, 20DO ,,,,Toi"
{% LC�Jll,C�/iZ �fl ���?.�CGl�UI2Q•
i
.1003 Gregory Fork Road
Richlands, NC 28574
Phone (910)330-2784
Fax (910) 324-6162
pittmansoil@yahoo.com
January 18, 2012
John L, Pierce & Associates
409 Johnson Boulevard
Jacksonville, NC 28540
Ref: Wellington Grove
Dear Mr. Pierce,
A SHWT determination was conducted at Wellington Grove located on Carolina Forest
beside Emerdale Apartments. The initial evaluation was conducted on May 17, 2011 and
confirmed ny Pat Donovan Potts on a later day.
Hand auger borings in the proposed storm water pond showed a SHWT of<12" from the
natural soil. This was deter -mined by the presence of chroma of 2 or less from the
Munsell Soil Color Chart. A map of the auger boring locations and detailed boring
descriptions has been attached.
The findings are based on the conditions of the site at the time of evaluation, and any
alterations may adversely impact the results.
If you have any questions please feel free to contact me at 910-330-2784. Thank You.
Sincerely,
R. Haywood Pittman II
NC Licensed Soil Scientist
1' FEB 0 6.Z01Z
i -, V
AUGER BORINGS of WELLINGTON GROVE
BORING 1
DEPTH (IN)
TEXTURE
STRUCTURE I
MINERALOGY
MATRIX
MOTTLES
MOTTLES
SWC
0-12
SL
GR
NS. NE
2.5Y 4/1
<12"
12-16"
CL
ABK
SS,SP
2.5Y 611
7.5YR 518
16-47
SC
M
VS, VP
10YR 5/8
2.5Y 611
7.5YR 5/8
47-58
SC
M
VS, VP
2.5Y 611
7.5YR 518
58-77
LS
GR
NS. NE
2.5Y 611
77-110
LS
GR
NS. NE
2.5Y 5/1
110-156
Sc
M
VS, VP
12.5Y 511
BORING 2
DEPTH (IN)
TEXTURE
STRUCTURE
MINERALOGY
MATRIX
MOTTLES
MOTTLES
SWC
0-12
SL
GR
NS. NE
2.5Y 411
<12"
12-18"
SCL
ABK
SS,SP
2.5Y 611
7.5YR 518
18-60
SC
M
VS, VP
7.5YR 518
2.5Y 611
60-114
ILS
GR
NS. NE
2.5Y 611
2.5Y 614
114-134
Isc
M
VS, VP
2.5Y 511
134-152
LS
GR
NS. NE
2.5Y 511
152-180
ISC
M
VS, VP
2.5Y 511
i`I
FEB 0 6402
11/28/2011 08:19 910-346-1210
JOHN PIERCE SURVEYIN
PAGE 01/02
November 28, 2011
John Fierce & Associates
409 Johnson Blvd.
Jacksonville, NC 28540
Ref: Wellington Grove
Dear W. Pierce,
�?1
I f1_ a-f (Jr"( <<'(1!''," �'rli'/{ f•.±J(;;+
An evaluation of the storm water pond at Wellington Grove was conducted to determine
the possible drainage effects on the wetlands located near the pond.
The soil in the proposed pond area was mapped as Rains in the Onslow County Soil
Survey, and auger borings showed that the soil series actually was Rains. The hydraulic
conductivity was determined to be between . I" and _01" per hour across the pond area_
This information was input into the Skaggs Method model to determine the lateral effect
oFthe pond on the wetlands.
Slmggs Method
The PPE of the pond was designed at an elevation of 44.0, and the lowest wetland
elevation was 49.00'- The difference of 5' was input into the model as the water table
depth. The various ksat readings were also input in accordance with their corresponding
depths. Auger borings were conducted to a depth of 6' to determine the restrictive
characteristics of the wetlands.
When using a drainable porosity of 0.035 the pond would need to be a minimum of 9'
from the edge of the wetlands. The plans indicate that the pond will be a minimum of
13.8' from the wetlands, therefore will not dewater the wetlands
If you have any questions please feel free to contact me at 910-330-2784. Thank You.
Sincerely,
ewood Pittman itensed Sol! Scientist
FEB 0 6 . Z01Z
lt3Y:
f1 1UHN PIERCE SURVEVIN PAGE 02/02
1/28/2011 08:19 910-346-1210 J
JJj w
Skaggs_method—summary.txt
44ietf7c it ith d`�.'k'ir4 �F"�'tr¢�r 7Y'A"k ik4 L'lt�7i �e Yr Yt'4 �r Sr A'eY #ir ilr�#'lF dlk�YY 1k'kitlFY!'A'Y4k¢�'k Si �Y �r YM A"a'iF iY it h'A'k ii it Ye'A'YC it ie Ye •Y VP'k ik ik Te YY dr
Skaggs Method Program
Determination of Lateral Effect for Roadside Ditch or Borrow Pit
version 1.3.0.0
Copyright 2006-2010 North Carolina State university
written in CW Language by Brian D. Phillips
East software update: March 16, 2010
Project Run bate and Time: 11/28/2011 5:22:46 AM
it'!r'IlYF-ke'e�'ty!"k it �t 4r'A"k ik it 4'74'i[ir it 7r Y+'Yci'['!t'k Yt fr itu4'15"k it Yi y'1k ik 14 si Y��iF fr lF df �.`irfr Yl�'kih iY Yt eY Yf it iF 3t Yt 9l"7'iF�47e it i[1Y Sr ri'�iFtr 4gl it lei 7e'lt �k
Project Information
--------- --------------------------------------
Project Title/Description: WELLINGTON GROVE - - - -
soil series or ID; MINS
User Name: HAYWOOD PITTMAN
Site Parameters
---------- ---------------------------------------------
impoundment 'type: 2 (X=Roadside Ditch 2� Borrow Pit) - - -
state: North Carolina
County: onslow
Surface storage: 2 inch
Depth to water surface: 5 ft
T25 value: 4.3 days
Depth to Restrictive Layer: 6 ft
Drainable Porosity: 0.035
weighted Hydraulic Conductivity: 0.0250 inch/hour
Hydraulic
Conductivity Data by La er
Bottom Depth of Layer (in}
Conductivity (in/hr}
Layer
1
12
•1
Layer
2
72
0.01
Layer
3
0
0
Layer
4
0
0
Layer
5
0
0
----------------------------------------------
--- ------------------------------------------
Lateral Effect: 9.0 ft
----------------------------------------------
----------------------------------------------
Page 1
=BY:
LL FEB 0 61012 - _
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Far DENR U•• RNLY r
C N
North Carolina Department of Environment and
®
Fz �:
s`dw"° 1=0
Natural Resources
NCDENR Request for Express Permit Review
nm•. (' 3
Gorden: I _ I Z
FiLL4N all the Inforrnaum below and CHECK the Permlt(s) you am requesting for awess review. FAX or Email the completed form to Evress
Coordinator along wMh a completed DETAILED Bengt& site plan IPDF /itel and vklnliv mar isoog items
oxmied in the application rackaae
of the project k canon. Please Inchrde this form In the applicadon package.
Asheville Region -Anson Davidson 828-290-46?8411s6n.davids ncmak
�C �+ ,1 ■
• Fayetteville or Raleigh RegiorWUvid Lee 919.7914203; dav1dJeaOncnw1Lrrq)
• kboms4le 6 -Patrick Grogan 704-6M772 or joqtrkk.92MLnjfteflwi1.nqt
• Washington Raglon-Lyn Hardison 252-9469215 or kr:L and onPnprtalLii
• Wilmington Region-lanot Russell 910-350.2004 or janetrusselkOftmall.no
NOTE: Project application received alter 12 noon will be stamped in the fdldwl'urg wok day.
Project Name WELLINGTONGROV------Cgun--:--------------------------------------------------------------------------------
r9etaeoaeCeanyw
Applicant, WELLINGTON GROVE.,LLC- Company-, 66K
Address: PO Box 2400,108 Professional Park DriveCity: BEAUFORT, State: K Zip: 2851r-
Phone: 252.504-3996 Fax:: - Emall:
Physical Location: AROLINA F REENTRANCE ROAD - WESTERN BLVD ACK VILLE
Project Drains into .� waters - Water =ificalion KIN (for Classification see-hVDIM2o.eni slate,rrc.uslb msiremitsReoorlsYYB.htmll
Project Located in WHITE OAK River Basin. Is project draining to class ORW waters? N , within % mile and draining to lass SA waters Norwithin t mile
and draining to Gass HOW waters? N
Engineer/Consultant: DAVID K NEWSOM Company: Y T A I R P=
FieW Cade ChwmW
Address: 3817.3 FREEDOM WAY City: HU
Phone:91[ 25OQQtt.Fsc::9143&Mlk_Email: aystaicoastenvftm-m _- - . - ----
-------------- -------- - , . ------- iFkwCoaeCMMec
SECI.lQkOHE:; REQUESTING'A SCOP.ING'MEETINO QNIY `
❑ &opine elating ONLY ❑ DWO, ❑ OCM, -❑ DLR, ❑ OTHER: _
❑ 401 Unit ❑ Stream Origin Determination: _ # of stream pas - Pkaase attach TOPO map marking the areas in questions'
❑ Intermittent/Perennial Determination: _ # of stream calls - Please atach TOPO map marking the areas in questions
❑ 401 Water Quality Certification ❑ Isolated Welland (_linear R or _aces)
❑ Riparian Buffer Authorization ❑ Minor Variance ❑ Major General Variance
® state stormwstef ' ❑ General ❑ SFR ❑BMd 6 Bt Rmp, ❑ Clear & Grub, ❑ Utility
❑ Low Density ❑ Low Density -Curb & Gutter _ # Curb Ouster Swales ❑ Offstte (SW _ {Provide permil #jl
® High Density-Delenticn Pond ;_# Treatment Systems ❑ Hgh Density -Infiltration _#TredmentSystems
❑ High Density -Bio-Retention L # Treatment Systems ❑ High Owsily-Stamwater Wetlands _# Treatment Systems❑ High Density -
Otto _ # Treatment Systems /❑ MODIFICATION: ❑ Majorg❑p�Minor Eui] Revision SW _(RaS�tareup.,wo) fo
❑Coastal Management ® ' n1.3e�'lpment ®Manila Devejopment ® Urban Wat,'"Urmtdlion
❑ Land Quality ❑ Erosion and Sedimentation Control Plan with _ acres to be distutbed.(CK # (for DENR use))
SECTION THREE Pl EASt ,CHECK ALL, W;is Af?PLICAkff YOUR PROJECT (for.lioth'scopingond e�ipreas rtieetuig'reglifist};
.Wetlands on Site ® Yes ❑ No Butler Impacts: ® No ❑ YES: _aae(s)
Wetlands Delineation has been completed: ® Yes ❑ No Isolated wetland on Property ® Yes ❑ No
US ACOE Approval of Defneatiori compfde& ® Yes ❑ No 404 Apptication in Process vd US ACOE: ❑ Yes ® No Permit
Received from US ACOE ® Yes ❑ No
For OF.NRuye oily
Fee Solis far nuddple pxmits: tCMtk a 1 Tad Fa Amavat
SUSWTFAL DATES
Fee
Sl19MRTAL DATES
Foe
CANA
s
v rur 171 Ylr,)
s
SW(11MO. 11 LD. Goo)
S
01:
5
LOS
3
QTM Deter`
NCDENR EXPRESS September200e
7JAN
VED
i 2012
Stormwater Treatment Narrative
Wellington Grove Apartments
BHP Western owns a 14.39 acre tract located off of existing Carolina Forest Blvd
approximately 900 feet North of Western Blvd within the city limits of .Jacksonville, NC.
The tract is currently undeveloped. Wellington Grove, LLC (managed by Wellington
Grove Housing of Jacksonville Inc.) plans to purchase this tract in order to construct an
apartment complex. The proposed development will include 88 one, two and three
bedroom apartment units in six buildings with Storm water Treatment Facilities (Wet
Detention Basin) located on site. The Treatment Facilities will be sized to handle the
proposed development plus access roadways and associated parking.
The project site is located in the White Oak River basin. The tract is currently wooded
with most runoff draining to adjacent ditches on the Southeast and which fie along the
boundary of the tract. From there the flow is into a nearby unnamed tributary of Half
Moon Creek (C; NSW). The site is relatively flat (0.6%-1.5% slopes).
The proposed development activities are high density (percent impervious > 24%);
therefore, Stormwater treatment facilities are required. The attached Stormwater Plan
includes a wet detention basin located within the designed Stormwater lot at the eastern
section of the site. This pond has been designed to meet the NPDES Phase II Rules, and
according to current BMP Manual Specifications. The stormwater pond has been
designed with a connected .forebay and main pond. Runoff generated from impervious
surfaces on site will be diverted to the forebay via inlets and underground storm drain
pipes. Treated Stormwater will exit the main pond via the outlet structure/24'7 CMP
outlet pipe and into the nearby drainage ditch along the Southern boundary of the tract.
RECEIVED
.BAN 1 1 2012
BY:
w, -
a tly YL .JY rr
TWv.vu
. uu.uu
C13
N73'25'44"E
133.84
1460.00
133.89
RECEIVED
C14
N62'26'55'W
64.69
5829.58
64.69
C15-
S03'59't38".E
'85.25'
300:00
-85.54
JAN 1 1 2012
C16
S81'45'08"W
526.45
279.90
685:13
C17
N09'55'17"W
118.08
333.24
118.71
BY'
C18
N84'31'04"E
257.08
655.17
25B.76
Ci 9
S76'02'24"E
185.24
655.17
185.87
LINE TABLE
LINE
BEARING
LENGTH
L1
S49'29' 34" W
107.72
L2
S24'12'57"E
65.01
L3
S00'41'21"W
141.17
L4
S35'02'05"E
120.07
L5
S32'42'06"E
90.46
L6
S07'30'59"E
148.82
L7
S21'49'42"W
100.92
L8
S12'22'41"E
159.12
L9
S26'53'42"E
139.72
L10
S75'50'11 "E
156.99
L11
N78'37'57"E
81.98
L12
S43'52'44"E
134.20
L13
S54'41'44"E
142.91
L14
S62'16'17"E
162.13
L15
N22'09'53"E
228.71
L16
N66'08'00"E
215.70
L17
N22'09'53"E
228.80
1-18
N66'08'00"E
215.70
L19
N08'05'09"W
37.54
LEGEND:
EIS = EXISTING IRON STAKE
SIS = SET IRON STAKE
REF: M.B. 26, P. 79 (OF PARCEL 1 & BLOCK 2)
NCDOT PROJECT PLANS 9.8031446
ON
M.B.