20080472 Ver 2_More Info Received_20090831

N?
:.W E'y BURDETTE LAND CONSULTING, INC.
10212 Creedmoor Road - Raleigh, North Carolina 27615
Telephone [phone] - Fax [phone]
S
August 31, 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
Gray's Creek Subdivision, Wake County, NC
DWQ Project #: 08-0472
BLC Project #: 60022
Dear Mr. McMillan:
Q?c??an[9 1
AUU S 1 2009
DENR • VMTER QUALITY
WETLANDS AND STORMWATER BRANCH
We received NC Division of Water Quality's letter requesting additional information regarding
the subject project application dated August 20, 2009. As requested, we have replaced reed
canary grass as a groundcover in the Stormwater Management Plan (SMP). We incorporated
deer tongue (Panicum clandestinum) as a groundcover instead. SMP sheets S-1 and S-2 have
been revised and are 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.
a4 t?
Jennifer A. urdette
Environmental Specialist
c: Keith Roberts - Development Consulting Services, Inc.
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99 9
- GRAYS CREEK POND PLANT LIST
KEY BOTANICAL NAME COMMON NAME SIZE ROOT QUAN. REMARKS
IB Ilex labs Inkbe 36" Ht. CONT. 8 FT Alo rcurus howellii Foxtail 24"-36" CONT. 15
I Panicum clandestinum Deer Tone ~
EL. 239.5 ELEV, 239 EMERGENCY STORAGE EMERGENCY SPILLWAY DEER TO UE
EL. 239 This native bunch ass ows in moist low woods. - -
NORMAL POOL o 3y. ° r i ~ va °
v o0 4 x4 x3 v v 2 v o i
~'ry ~ RISER STRUCTURE so 3 i
INV OUT=235 ~ ovovoovvvoovooo vvavvovovoovovvovv vvvo aoooooovvavvovoovvovovoovovvvvvavvvov 24 RCP C~ MINIMUM .5~ SLOP UT TO SCOUR HOLE ELEV. 235.0
STANDARD WIDTH OF PSRM ROtL
" 0 ANIC COMPOST ' 3 RG 8x8 X2 CONCRETE
2.2' BASE
2. ' SHWT ELEV. 23 3
311' ~ ~ • PSRM-INSTALL LEVEL AND RCP OUTLET PIPE FLUSH WITH NATURAL
~ ~ GROUND ~ ~ PSRM SHALL BE SEEDED
~A b W17H VEGETATION A7
99 9 - -11 I- Z fNSTALLA710N. -11I-III-III _ _ NATURAL
- III-III-II ~
- - - ' 1= I-III-III=III=III=III-III-III=III=III-III-III= ~
' I=1 11=1 11=1 11=1 11=1 11=1 I I-1 11=1 I I-1 I I-1 11=1 I I-1 2~~ = III-1 I i m I 11- III-1 I I I ~ I I I ~ I I I ~ I I I I-1 I I-1 I I-1 I I I I I I I I ~ I I I I I ~ I III I I I I
=1 11=1 11=1 I ICI 11=1 11=1 11=1 I I-1 I I-1 11=1 I I-1 11=1 I 1=1 I I-1 I hI I I-1 I I-1 I I ="I I~~ =-1 11=1 I I-1 I I III-1 I I-1 I I-1
~ I-1 I I-iii .I I I.I I I,, ; ,III=11I I I I~ i I I I 1=1 11=1 11=1 -I 11=1 =__=III-III-III-III-I i I-III-III-III-I 11=1 I I-I 11=1 I I-III- I I-III-I I l-I
III ,III-I I I I_I I I III-III-III-III-I 11=111-I 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 I I-I 11=1 11=1 11=1 11=1
-1 I I-III-III-III-III-I i 1=111 111=11.1=1 11=1 I I-~I 11=1_I 1=1 11=1 I I, ,III-1 11=i ? ~=1Ti=? I i=1 11-1 I I, , I I 1-I i
CONSTRUCTION SEQUENCE ~ it i -1 I I III-I 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 I I-I 11=~ ~ I LINER: CLASS 8 RIPRAP {050=8) ~ I i I I -1 -1 I I=1 III-III-III-III-,~ ~ ' '
RETENTION POND WfTN TYPE 2 FILTER FABRtC ~-iii-III-Iii-i i
1, Insure the site is stabilized and confirm with the enviromental Engineer, DENR 791-4200, C7i
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 n only as necessary to install these devices. SCOUR HOLE CONSTRUCTION SEQUENCE
5. Seed any disturbed areas inside and outside of the pond. f. SITE MUST BE STABLIZED BEFORE 1NSTALLA7/ON OF SCOUR HOLE SHALL TAKE PLACE CONFIRM WITH WAKE COUNTY
ENVIRONMENTAL ENGINEER.
Z ENSURE THAT PSRM AARON !S FLUSH WITH NATURAL GROUND, 3. RIPRAP SHOULD BE AWELL-GRADED MIXTURE OF STONE.
SMALLER SIZE RIPRAP SHOULD FILL VOIDS BETWEEN LARGER p ppUR HOLE STONES.
4. IMMEDIATELY STABILIZE DISTURBED AREAS AFTER p,~
CONSTRUCTION WITH VEGETATION, 0~ 5, CLEAR AREA OF CONSTRUCTION DEBRIS.
9 9 9 AUG ~ ~ 2009
X NOTE tF SCOUR IS INSTALLED IN A FILL SLOPE, SOIL SHALL BE COMPACTED TO 959' OF STANDARD PROCTOR TEST LEVELS PRIOR
TD INSIAILAT/ON AND SEEDING WETIANDSANDSTORR~q~R
e
r ~ mn nn n ~ nn r~r~r ~rnr~r~
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o ° o ° TO WAT PLAN DETAILS llHlh: UZS sl-UV XtVl~)tll SCALE: SEE DETAILS
]BTTRDEmT7712j LAND ~ ? 7
o • NC® GRAYS CREEK SUBDIVISION DRAWN BY: TMB
E
• 10212 Creedmoor Road - Raleigh North Carolina 27615 FU UAY-VA NA A COUNTY, N CHK'D BY: JAB
Telephone [phone]- Fax [phone] o PROJECT 60022
S ° FIGURE SI

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I f~ ~ I i f ~ - I I ~ ; Q i ~ FL, IN-199,,65, CB41 ( ~ ~ ~
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~_._.-TOP=196,5 : ; ~ , r~`,;' ~ ~
' ' ~ ~d' I ! ~ / i ; ~ ~ ~ ~@ 3.13 o OPEN TOP WITH #4 REBAR ~ ~ - - ,
J _ CB41 ~ i ~tl ~ , I 42 RC ~L~ , ~ ~ i ~ i PLACED 4" O.O. FOR `~ti.,
~ i I RIM=205.92 j ~ , , ~ ~ o E ~ i ~ / I r~ TR, _ ~ , TRASH RACK \ Q ~ ; ~,i~
FL. IN-~~99.92~ CB42 . C ` INJI. OUT=194 ~ ~
~ ~ ,i ~ ~ ~ r-- . o _ W -199.8 ~ ~ 2 T r! RI 11 =207.:01 FL, _ WITH~'18'; ORIFICE IN BOX @ ELEV. 194 ~ ~ ~
r I ~i / l C ;1 j o d l A~ ti~ ' ~ ,,r ;r ;
f r . , . ~ ~ ~ i FL.IN=-200".7 C~ ~ f 6
r " _ _ _ 1 -FL. oU , ~ , ~ ~ ~ _ ~ ~t~ T , j ` 10', PRIVATE - ~
;r ~ ~ ~ ~ 20 DRAINAGE EASEMEN ,r` - ti.~..~ . 9 FT
- DRAI~JA DRAINAGE EASEMENT ;;'~`ti~ , ; ~
. , _ t ; i ~ ~ 1 ' ~ ~ ~ a ! ~ _ i
~ l~ t--~--- _ -~HW11
EDIMENT $AS. 7 ~ ~ S ,u u~ ~ ~ ~ FL. OU ~ I t (IY Ohl ` ~ / ~ ~n
r - - - ='fl- - - ! _ 60 Wx124 LX3 D
BASIN WILL BE CONUER~ EC CONVERTED ~ ~ i
- i , _ - ~ _ ' ~ ~ _ i ~ ~ - _ - _ TO A RETENTION POND )N POND ~ ,e ~ / ,
, ~ - __a~ _ ~
~ I w i I ~ , ~r , ~ ~v,~ . ~ ~ ~ \ ~ ~ ~ ~ ,r
~ 1 ~ ~ i l l l ~ CB43 ~ ~ h, ~ ~ ~ ; i
0 e, I ~ , ~ ' , % , ~ A ~ ~ ;1 ~ F
~ ~ ~ = 7,01 i ~ , ~IM~..20 i 4 ~A, o ~ ~ _i 1 " ~ ~ 1 \ r,.
~ ~ FL. IN-200.93 CB44~ . , ~ , V
_ i ~ T=200.83 ~q ~ ~ ~ _ ,,FL, 0 ~ ~ - ~ ~ - - _ ~ CB44 - -
I r ~ I _ ~ 1 ~ r ' r ' ~ RIM=.206.97 ~ ~ ~ \ ~ ~
~ I i 1 ~~I I i c ~ IN 202.67 i` r,;, ~ ~ ~ ~ i /
FL, r I i k~ I 1 \ Q ~ ~ \ i 4
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j ~ / i ~ i I 1, ~ - _ _ 1 _.i_________
_ i i ~ _ . i ~ V~ } ~
' f ~ - } 99
GRAYS CREEK POND PLANT LIST
- - KEY BOTANICAL NAME COMMON NAME SIZE ROOT QUAN, REMARKS
I IB Ilex Iabra Inkbe 3b"' Ht. CONT. 6
24"•36" CONT, 9 FI' Alo rcurus howellii Poatail ~
Panicum clandestinum Deer Ton e
EL. 198 ~ This native bunch ass ows in moist low woods,
GENCY SPILLWAY
ELEV. 998 EL. 197 EMERGENCY STORAGE - - - - - DEER TONGUE _ - - °
v o - OOL ~ - - - 196 NORMAL P
ELEV. _ ° ~ ° _ _ 4X4 X2 Z o - i i
2 ; 3' RISER STRUCTURE E ti UT TO SCOUR NOL STANDARD WIDTH OF PSRM ROLL
~ = 18 RCP @ MINIMUM .5~ SLOP ° 2 ELEV. 994 v voovvvvvoov vovovoooovvvo vvvvvovvvvvov ovoo vaov ov vavvvoov oovovovvvvvvvv ovvoovovovvovv
1' 8'x8'X2' CONCRETE NIC COMPOST SHWT ELEV. 193 3 ORGA BASE i i~
• PSRM-INSTALL LEVEL AND
112.36' ';?J FLUSH WITH NATURAL RCP OUTLET PIPE ~ GROUND
~ ~ PSRM SHALL BE SEEDED ~ D WITH VEGETATION AT
I •D INSTALLATION.
z ( - NATURAL
'9 _ 9 -1II -IIIIIIIIIIIIIIIII= _ _ _ _ - N _ - - - - - - _ _
- I I=III=III=I 11=1 ~ I=I 11=1 11=III=I ~ I=1 ~ 1=III=I ~ I=? o ~-__=III=III=III=III=) I I=III=III=III III-III-I I I-•I
2~ ~__I I I=III=III-_ _ I I I I=_ i t=1 i i=1 ~ 1=1 ~ I I I ~ 1=I ~ 1=I ~ I=1 ~ 1=1 ~ I=I ~ I=I ~ 1=I ~ I=I ~ I=1 ~ 1=I ~ 1=~ - 1=III=III=1 ~ I=I ~ 1=I ~ I 1=Y~ = I C I=1 11=I ~ I III=1 I I=III=I I
~ -1 I I-I ~ I-I ~ i-I ~ I-I ~ I-I ~ I-I ~ I-I ~ I-I ~ I-i ~ I-I ~ I-I I _
i I-:I 11--I I I _I I I-1 I I,, ,III-I 11=1 11=1 11=1 11=1 -I 11=I I I 1=1 11=1 11=1 11=1 11=1 11=1 11=1 I I-I 11=1 I I-III-I 11=1 I i- 11=1 11=1 I I-I
~ ~ -1 I I ;III=1 -III-1 I I III=III=1 I I=1 I I=1 I I-1 I I-1 I I =1 I I-1 11=1 I I-1 11=1 I I-1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11=1
~ -1 11=1 11=1 11=1 11=1 11=1 11=1 I I III-1 I I-I 11=1 I hI 11=1 11=1 i l I ~ l l l ll,, ,III=1 I I=IT?=iTi=? I I=1 I i-1 I I,;, I 11.=1 ~
I fl i=1 I I I I 1=1 11=1 11=1 11=1 11=1 I I=1 I i-i I I-III-III-, LINER: CLASS B RIPRAP (D50=8) ~ ~ I ~ ~ I I_f I! I-III III-I I (-III III--III-~
WITH TYPE 2 FILTER FABRIC ~Ti-i I I-iii-"'-
CONSTRUCTION SEQUENCE O
RETENTION POND
t. Insure the site is stabilized and confirm with the enviromental
Engineer, DENR 791-4200" 2. Remove all erosion control devices from the basins. `;SOUR HOLE CONSTRUCTION SEQUENCE
fl ded. 3. Check basins and orifices for any debris and clean as nee T. SITE MUST 8E STABLIZED BEFORE INSTALLATION OF SCOUR
4. Install retention ponds as shown on the approved pions. Clear HOLE SHAL1 TAKE PLACE CONFIRM WITH WAKE COUNTY ENVIRONMENTAL ENGfNEER.
only as necessary to install these devices, 5. Seed any disturbed areas inside and outside of the pond. 2. ENSURE THAT PSRM APRON !S FLUSH WIlH NATURAL GROUND. 3. RIPRAP SHOULD BE AWELL-GRADED MIXTURE OF STONE. SOUR HOLE
SMALLER SIZE RIPRAP SHOULD FILL VOIDS BETWEEN LARGER
STONES 4. IMMEDIATELY STABILIZE DISTURBED AREAS AFTER
CONSTRUCTION W1TH VEGETATION.
5, CLEAR AREA OF CONSTRUCTION DEBRIS
NOTE. IF SCOUR 15 INSTALLED 1N A FILL SLOPE, SOIL SHALL BE COMPACTED TO 95~ OF STANDARD PROCTOR TEST LEVELS PR/0R
g ' 9 TO 1NSTALLATION AND SEEDING.
DATE; 08-31-09 REVISED
®®®oooo®®
® N STORM A I hK FLAIN h I tilL;!) SCALE: SEE DETAILS
T • G INCRAYS CREEK SUBDIVISION DRAWN BY: TMB
BURDE"TE /~"`%NSYT-~ ® ,7 ® LAND IN • : JAB
FU UAY-VA NA WAKE COUNTY, N CHICP 'D PROJECT 60022
615 • - Raleigh North Carolina 27 10212 Creedmoor Road
841-9909 • Telephone [phone] -Fax (919) FIGURE S2
® ® e o®o S
a