20080472 Ver 2_More Info Received_20090806

N
•w E,i BURDETTE LAND CONSULTING, INC.
10212 Creedmoor Road - Raleigh, North Carolina 27615
Telephone [phone] - Fax [phone]
S
August 6, 2009
Mr. Ian McMillan
NC Division of Water Quality
Central Office
401 Oversight/Express Review Permitting Unit
2321 Crabtree Boulevard, Suite 250
Raleigh, North Carolina 27604
RE: Additional Information Response t5 v
Gray's Creek Subdivision, Wake County, NC AUG : 2009
DWQ Project #: 08-0472 Kw-WATER WN
BLC Project #: 60022 VVETWO MV STORWAIM BRWO4
Dear Mr. McMillan:
We received NC Division of Water Quality's letter requesting additional information regarding
the subject project application dated July 24, 2009. Each numbered request is addressed below.
1. The Stormwater Plan Details S-I and S-2 have been revised to include reed canary grass
as groundcover for erosion protection and three inches of organic compost as a topsoil
amendment to ensure plant survivability. Three copies of these revised details are
attached.
2. Two hard copies of the soils report are also attached.
Please feel free to contact Mr. Keith Roberts, PE of Development Consulting Services, Inc.
directly at [phone] if you have any questions about the stormwater information provided.
Sincerely,
Burdette Land Consulting, Inc.
044 ?
Jennife Burdette
Environmental Specialist
c: Keith Roberts - Development Consulting Services, Inc.
®OCT-27-a009 09:45 FROM:CENTRAL CAROLINA 501 19197049079
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TO:7723437
P.1
Central Carolina Soil Consulting, P'LLC
4024 Starrett Drive, Suit; 201
Raleigh, NC 27609
Phone: [phone]
Fax: [phone]
Fax
To: Dexter From., Jason Hall
Fax: [phone] Pages: 8
Phone: Date:
Re: Gray's Creek cc:
? Urgent i ? For Review ? Please Comment ? Please Reply
• Comments:..
Dexter,
t%Attached are the profile descriptions per your request.
Jason
°GC?C?ObC?
A U G 1009
MM -
WEnt? AND WATER
MMCM
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99 f
GRAYS CREEK POND PLANT LIST
KEY BOTANICAL NAME COMMON NAME SIZE ROOT QUAN, REMARKS
IB Ilex abra Inkbe 36" Ht. CONT. 8 FP Alo eicurus howellu Foxtail 24°~36" CONT. 1S
Phalaris Arundinooea Reed Can Grass
ELEV. 239 EL. 239.5 REED CAN RY G SS EMERGENCY STORAGE EMERGEGY SPILL~NAY
EL. 239 Grows on ex osed areas and in shallow water.
NORMAL POOL °v ~N
vv 4'x4'x3' 4• > °
,y ~ RISER STRUCTURE 3 _ v °v INV OUT-235 »
vv vvvvovvvvvavov vvvooooovvvvvvvvvv vvvv vvvvvvvvvovvvvvvvvvoovvvvovvvvvvvvvvo V. 235. 24 RCP C~ MINIMUM .5~ SLOP UT TO SCOUR HOLE ELE
STANDARD WIDTH OF PSRM ROLL
3" ORGANIG COMPOST 8'x8'X2' CONCRETE
2.2' BASE
SHWT ELEV. 232.3'
311' I ~ ® PSRM-INSTALL LEVEL AND RCP OUTLET PIPE FLUSH WITH NATURAL
b ~ ~ ® PSRMNSHALL BE SEEDED
b ~ WITH VEGE7A710N AT
?P 9 S lNSTALLA TtON.
= -1 I I-I I I- -III-III -III-III-III NATURAL ~ I-I ~ I-i ~ 2y N - - - - - _
- I i-II I-I ~ 1=1 ~ I-I ~ I-I ~ I--I I I-I I I-I I I-I I I--III-I 11= 'L o
II=III ' I=1 I I=1 I I=1 I I=1 I I=1 I I-1 I I-1 I I-1 I I=1 I I=1 I I=1 I I=1 2~• = III-1 I I-1~--I I I_I I II I I I j~ I I I II 11=1 11=1I 1=1 I I I II I it I II I II I II I II I II
i= ''-1I I-1I1=1I I-1I I-1I I-1I1=1I I-1I I-1I1=1I I-1I I-1I _ 1=1I I-1I ICI I I-1I1=1I I _~I1~~== III-1I I-1I I I11=1I ICI I1=1
~ I-1 I L-I I i .I I I.I I I, ; ,i I I-III-III-III-III-I _I I I-I __=III-III-III-III-III-III-III-III-I I i-III-III-III-III- 11=1 I I-III-I
i I =1 I I, ,III-1 -I 11=1 I I I! I-III-III-III-I 11=1 I I-I 11=1 11=1 11=1 I I-I 11=1 I I-III-I 11=1 I I-I 11=1 I I-I 11=1 11=1 I I-I 11=1
~ -1 11=1 11=1 11=1 I I-1 11=1 11=1 I I III-1 I I.I I I-1 I i-1 I I-1 11=1 I I-1 I I-1 11=1%i i i=?Ti-i I I=I I i-1 I I-1 I I-I ~
CONSTRUCTION SEQUENCE ~ I ~ i -1 I I I I 1=1 11=1 11=1 11=1 11=1 I I-I 11=1 11=1 11=1 I I; I I 1=~ ~ LtNER: CLASS B RIPRAP (D50=8) I I I I_ -1 I-III (((-III-I ~ I-) I I-~ ~ I-~
RETENTION POND I I WITH TYPE 2 FILTER FABRtC '-iii-III-III-i ~ ~
1. Insure the site is stabilized and confirm with the enviromental Engineer, DENR 791-4200. I ~
2. Remove all erosion control devices from the basins. O
3. Check basins and orifices for any debris and clean as needed.
4. Install retention ponds as shown on the approved plans. Clear ~ only as necessary to install these devices. SCOUR HOLE CONSTRUCTON SEQUENCE
5. Seed any disturbed oreas inside and outside of the pond, ` } 1. SITE MUST BE S7ABLIZED BEFORE INSTALLATION OF SCOUR HOLE SHACL TAKE PLACE. CONFJRM WITH WAKE COUNTY
f ENVIRONMENTAL ENGINEER.
Z f ,3 t ,3 RlPRAPE SHOULD BE A PWELL-GRADED MIXlTURE OF STONE.OUND• ~
STONES. SIZE R/PRAP SHOULD FtLI VOIDS BETWEEN LARGER PEO E SCOUR HOLE
4. G ~ ~ 4. IMMEDIATELY STABILIZE DISTURBED AREAS AFTER A/~~ ~ A~~ ~
~ 5. f ( CONSTRUCTION WITH VEGE7A7/0N. !V 5. CLEAR AREA OF CONSTRUCTON DEBRIS.
7 9 1 ~ NOTE OENR•YdAT~R IfY i bKETLA~,DSRPdDSt~ NOTE.• 1F SCOUR /S INSTALLED IN A FILL SLOPE, SOIL SHALL BE T€R®,RANDp{
COMI COMPACTED TO 95% OF STANDARD PROCTOR TEST LEVELS PRIOR
TD IP TO INSTALLATION AND SEEDING.
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e o BURDE77E - CONSULTING2 GRAYS CREEK SUBDIVISION DRAWN BY: TM13
Ile W E° - 10212 Creedmoor Road - Raleigh North Carolina 27615 FUQUAY-VA NA AE COUNTY, NC CHK'D BY: JAB
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Telephone [phone]- Fax [phone] PROJECT 60022
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RIM 205.92 ; , ~ I i~~ ~ ~ , ~ / ' i ? i, PLACE 0 PLACED 4" O.C. FOR ` ~ ~ ~ _ o ~ ~
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r ~ , ~ ~ ~ , T A RETENTION POND _ , ~ ~ I 'ONO A v~ r f j~ ~ ~ r f'
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99 f
GRAYS CREEK POND PLANT LIST
KEY BOTANICAL NAME COMMON NAME SIZE ROOT QUAN.:REMARKS
IB Ilex labs Inkbe 36" Ht. CONT. b FI Alo rcurus howellii Foxtail 24"•36" CONT. 9
Phalaris Arundinocea Reed Can Orass ~
ELEV. 198 EL.19S
REED CANARY GR SS I EMERGENCY STORAGE EL. }97 GENCY SPILLWAY Grows on ex osed areas and in shallow water.
° ° ~y
'ELEV. 196 NORMAL POOL . 4 x4 x2 ~ 1V v 3' RISER STRUCTURE
° - ° 2
- 18"RCP @ MINIMUM .5~ SLOP UT TO SCOUR HOLE ° °°°°°.°°°°°°°°°°a°°°°°° ELEV. 194
3" ORGANIC COMPOST 1' SHWT ELEV. 193 8' x8' X2' CON CRETE STANDARD WIDTH OF PSRNf ROLL
BASE
112.36'
~ • PSRM-INSTALL LEVEL AND
I RCP OUTLET PIPE FLUSH W17H NATURAL ~ ~
i / ~ ~ • PSRMNSHALL BE SEEDED ~ b WITH VEGETATION AT
99 9 INSTALLA 710N.
- -1 I I-I I I- -III-III-III _ _ _ _ _ _ _ _ ( _ NATURAL
- ~ ~ I=1 ~ I=1 ~ N = - - - - - - - - -
~-III-III=1 ~ I-I ~ I-III-I ~ I-I 11=1 I I-I I I-I I I-I 11= 0 1~ _ _
- I I=~ ~ ' ' 1= ' i-1 I I=1 I I=1 i t=1 I I=1 I I=1 I I-1 I I-1 I I-1 I I-1 I I-1 I I-1 - = III-1 I II I i 1- III-1 111 ~ I I I ~ I I I ~ II I I-1 I I-1 I I-1 I I I II I II I II I II ~ II I II I II ''=III-III-III-III-III-III-III=III-III-III=III=11 = _ _ _ _ 1=III-III-III=III=III =~11~~ _-III-III-III III-111'111=11
i i-III-III =1 I 1-1 I I, ; ,III-III-III-III-III-I _I I I-I ~ _ _ =III-III-III-III-III-III-III-i I I-III-III-III-i I I-III- I I-III-III-I
=1 I I, ,III-1 -I 11=1 I I III-III-III-III-III-III-I 11=1_I 1=1 11=1 I I =1 11=1 11=1 11=1 11=1 11=1 11=1 I I-I 11=1 11=1 11=1 11=1
-111 I ~ ~ I I 1=1 I I-I 11=1 I I-I 11=1 I I I I 1=1 11=1 I I-I 11=1 11=1 11=1 I I ~ ~ I I I I, ; ,III-1 11=ITi=iii=l I I=1 11-1 I I, , I I I-ITi_
LINER: CLASS B RIPRAP (D50=8°) _ ~ i ~ l l (-111- ~ 1=1 =1 I 1=) ~ =111-) -I (I i ; ,
CONSTRUCTION SEQUENCE wlt~ TYPE 2 FILTER FABRIC ~ ~ ~ - I ; ,III, ; , 11I, , , I I I_, ,III, ; ,III III-~ ~
RETENTION POND
1. Insure the site is stabilized and confirm with the enviromental 0
Engineer, DENR 791-4200,
fl 2. Remove all erosion control devices from the basins. 3. Check basins and orifices for ony debris and clean as needed. SCOUR HOLE CONSTRUCTION SEQUENCE
4. Install retention ponds as shown on the approved plans. Clear 1. 1. SITE MUST BE STABL(ZED BEFORE iNSTALLATlON OF SCOUR
only as necessary to install these devices. 5, Seed any disturbed areas inside and outside of the pond, HOLE SHALL TAKE PLACE CONFIRM WITH WAKE COUNTY ENVIRONMENTAL ENGINEER.
Z ~ 3 2. ENSURE THAT PSRM APRON IS FLUSH WITH NATURAL GROUND. 3 RIPRAP SHOULD BE A WELL-GRADEO MIXTURE OF STONE.
SMALLER SIZ£ RIPRAP SHOULD FILL VOIDS BETWEEN LARGER P ® SC(I IDOL
4. , sroNEs 4. IMMEDIATELY STABILIZE DISTURBED AREAS AFTER ~t
i CONSTRUCTION WITH VEGETATION. t7
5. 9 9 y 7 NOT 5. CLEAR AREA OF CONSTRUCTION DEBRIS.
A COM NOTE IF SCOUR fS INSTALLED !N A F2L SLOPE, SOIL SHALL 8E COMPACTED TO 959' OF STANDARD PROCTOR TEST LEVELS PRIOR
9 TO t TO INSTALLATION AND SEEDING.

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STO OVATE PLAN DETAILS LJIA1r-. uo-vj-V~51 SCALE: SEE DETAILS
BURL-~)-ZTTE ILAND CONSULTING, :Nc. BMW GRAYS CREEK. SUBDIVISION DRAWN BY: TMB
10212 Creedmoor Road -Raleigh North Carolina 27615 U UA ®VA A A COUNTY, NC cxxD BY: JAB
Telephone [phone]- Fax [phone] PROJECT 60022
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~ SEE ACCOMPANYING SOIL REPORT ~xlsTl~~~~ 6..
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DATE: 08-05-09
N SOIL BO G LOCATION GRAPHIC SCALE Q , S~, SCALE: V= 120'
1" =1a0° DRAWN BIT: TMB
T I~IJ T G YS CREEK SUBDIVISION DR 7ao° 0 7ao° ~aa° e E ;
A 1 I r 6 10212 Creedmoar Raad Raleigh, North Carolina 2'7615 FU I1AY-~ A, WAKE C®UNTY, NC CH 9 CHKD BY: JAB
Telephone (919) 8~1-9977- Fax (919) $41-9909 pR' PROJECT 60022
~'~E~f~~RNDSYORrda~~ ~ ••®•e ~ Fl! . tiaL~°vq{ • • • FIGURE B l