20081155 Ver 3_More Info Received_20091014

N # F C U S
Planning • Design • Engineering
Comment Response Letter
October 13, 2009
Joseph Gyamfi
North Carolina Department of Environment and Natural Resources
Division of Water Quality
2321 Crabtree Boulevard
Suite 250
Raleigh, NC 27604
Re: Integra Springs at Kellswater - SWM/BMP Pond # 1 Redesign
Dear Mr. Gyamfi,
In response to the comment letter dated October 12, 2009, received via email, we are submitting
the revised plans and additional information that was requested for a formal review. The following
is a list of the comments received and our response on how the comment was addressed.
1. Please review the cover sheet and subsequent pages of the plans to reflect the name of the
project as discussed.
The Cover Sheet and subsequent sheets have been changed to reflect the new project
name as discussed.
2. Wet Pond:
a. Please move the inlet pipe from the corner towards the center of the forebay (i.e.
about 20 feet to the right).
The inlet pipe has been relocated toward the center of the forebay as shown and
noted on Sheet C400.
b. The riser height dimension indicated in BMP Outlet Detail (Section A-A) should be
changed from 6 feet to 4 feet.
The riser height dimension has been updated to 4 feet as shown on sheet C400.
c. Please revise the statement on sheet C400 requiring in-situ soil verification and a
possible clay liner to read as follows: "Geotechnical Engineer shall verify that the in-situ
soil is clayey (e.g. silty-clay, loamy-clay, or clay loam) and shall be compacted to achieve a
moderately low to very low infiltration rate (less than 0.6 in/hr). Otherwise, a clay liner shall
be installed as shown". This office recommends an 8-inch clay liner plus 4-inch top soil.
The statement has been changed as noted along with the 8-inch clay liner as
shown on Sheet C400.
I believe the responses to the comments have been adequately addressed. If you have any
additional questions or concerns please feel free to contact me at your convenience.
N•Focus Design, Inc.
P.O. Box 85 Kannapolis, NC 28082
Tel: [phone] Fax: [phone]
www.nfocusplanning.org
Sincerely,
N * H"M""o; C U S
Planning • Design • Engineering
LETTER OF TRANSMITTAL
Date: October 13, 2009
To: Joseph Gyamfi
North Carolina Department of Environment and Natural Resources
Division of Water Quality
2321 Crabtree Boulevard
Suite 250
Raleigh, NC 27604
Project # 08-01.1
Re: Integra Springs at Kellswater - SWM/BMP Pond # 1 Redesign
Please find attached:
? 2 Sets 6 - 24"x36" Stormwater Management Plan
? 1 Copy 1 - 8.5"x11" Comment Response Letter
? 1 Disc PDF Data Disc of Submission Packet
Comments:
Please contact me if you have any questions or comments.
Sincerely,
• 0ocus esign, In
Ada . Now )in, P.E.
[e-mail]
N•Focus Design, Inc.
P.O. Box 85 Kannapolis, NC 28082
Tel: [phone] Fax: [phone]
www.nfocusplanning.org
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GENERAL SINN! / BMP CONSTRUCTION SEQUENCE:.
1. WET DETENTION BASINS ARE TYPICALLY PART OF THE INITIAL SITE CLEARING
VICINITY MAP AND GRADING ACTIVITIES AND ARE OFTEN USED AS SEDIMENT BASINS DURING
Csc~.~:3°=zooms ~ ~ \ •'`~;'i,~ _ 1 i , ~ ' , . y;,~ _ • _ `1 irl ~~;jy;~; • • CONSTRUCTION OF TH ~ , ' _ ~ ~ ' ` , ^ E UPSTREAM DEVELOPMENT.

_ ~ 2. IF THE WET DETENTION BA51N 15 USED AS A SEDIMENT TRAP DURING
- _ CONSTRUCTION, ALL SEDIMENT DEPOSITED DURING CONSTRUCTION MUST BE
1 REMOVED, EROSION FEATURES MUST BE REPAIRED, AND THE VEGETATEfl
, t' ` SHELF MUST BE RESTORED, BEFORE OPERATION AS A STORMWATER BMP t _ - ~ BEGINS_
/ i . t , i r r , i , i • 1 i , r
, _ ~ ;_1 ~ .A.~t~;,, • ` 3. ONCE THE UPSTREAM DEVELOPMENT HA - - - r;' 1 \ S BEEN STABILIZED AND THE EROSION
-r, 1 - r. _ . ~ , r ~ ~ ~ - - _ - ~ CONTROL INSPECTOR HAS AUTHORIZED THE REMOVAL OF EROSION CONTROLS
. i° d "'~'"\;:;`1;1~ THE CONTRACTOR AN THEN BE AN ' C G CONVERTING THE SEDIMENT BASIN TO
c"~ I w , ~ _ ~ ~ , - THE STORMWATER BMP PER THE DESIGN. N N ~ 'S~` l;~'~; U Oa d0 N S-
!i l ~ i~ ~ s ~ - / y ~ , , y I I ; ; I I;',,' 4. AS THE CONTRACTOR IS CONVERTING THE SEDIMENT BASIN TO THE ~ 0 N ~ ~ ,.y I I I I ~ STORMWATER BMP A GEOTECHNICAL ENGINEER MUST BE ON SfTE TO ~ m
• ; ~ , ~ ~ ~ ~ ~ ~ ~I~~ "`~'`'.'(I ~ I I sl DETERMINE !F THE SOILS CONDITIONS WARRANT A CLAY LINER. ~ Q ~ ~ ~
,;.t, , ' / , ~ ~ i. ~ ~ 4 ~ ! ~ ~ ~ - a.. w~ ~ ~ •
, , , ; f ;'I~!,'~'';1'n I I ' ' I';~ t~ 5. THE LINER SHALL BE CONSTRUCTED OR COMPACTED SUCH THAT THE _ ~ ~ ;1',';1'1; '~4'`',~`'',~~•.;,_:: ~ ~ C3 to
n _ _ • , , ' - , \ ! ,a , A . . l ; , ` ' i [iill ,i, lr;'rrl'!1, `;1 I „ „I,'~~,'. • , ~ . - - ; ~ ' `,4`,i';,'~,I'!!'~ `,1'','`;`,'*. INFILTRATION RATE IS NO MORE THAN 0.01 IN1HR. WHEN A LINER IS PROPOSED, ~ 0 I`- ~
T . ~ _ • ~ BEFORE YOU DIG , _ • • : • t 1 TOPSOfL FOR VEGETATION MUST BE PLACED ON TOP OF THE LINER. U Q " U
. „ , ~ , , ~ '~,1~,, p • LL 1-Boo-s32-494s . ~ , ~ • ~ , , 3 • , l 1 i ;',,1'`,,',, ti ~ ~ - 6- IF REINFORCED CONCRETE PIPE IS USED FOR THE PRINCIPAL SPILLWAY, ® ~
N.C. ONE-CALL CENTER , • , , .N, , ~ ~ ~ ~ , • , ~ ; : - _ - - ~ r~,J' "~~,.r'<<~ ''1'~ ~ y 1 ` G" GASKETS ASTM C361) SHOULD BE USED TO CREATE WATERTIGHT ~ ~ ~
ITS THE LAW! •,~"~,1'~ ~ - _ . , , . , M . ' ~ ~ ~ ~ JOINTS AND SHOULD BE INSPECTED DURING INSTALLATION. . _
; <
. , „ ;,1~,,, - - _ - - ;,1`'~= _ -rlr,';r 7. AFTER THE CONTRACTOR HAS BROUGHTTHE STORMWATER BMP TO FINAL
. ~ ~ . - = " - - -';"v,'' - Yi;';~;~'%~'j;"; GRADE AND INSTALLED THE DESIGNED T --c~%; •i- ,;p;;;~,~;,;\~,!;;~- ; ,1', - OU LET CONTROL STRUCTURES
,t • _ - ~ J 1;'.i;;'' ;1 ! PLACEMENT OF THE PLANTINGS MAY BEGIN-
- ! 8. WETLAND HERBACEOUS PLANTS SHOULD BE INSTALLED 3115 THROUGH 7115 IN
- ~ ; ~ ~i ! i i. i OUR CLIMATE. CONTAINER GROWN WOODY PLANTS ARE BEST INSTALLED FALL
. . . . , • • - - ._...e - - . , ld~,,,,; _ ~ - 'D # - ; `1i;'~? i ~ i,il.i: ;ii+l THROUGH EARLY SPRING BUT IN WETLANDS YOU CAN AL Y - _ p®N , r,,%- ,~,y, i ; ,I~;,~,y,;;;ll,' USU LY GETAWA
a: ..a• . _ ;-`r'; I,':,', , ~,,!';'.,lil''~'sl~l'';';'~'~,1'',;;,',,,,t WITH PLANTING THEM AT THE SAME TAME AS THE HERBACEOUS SPECIES. ~
- ~ - 1~''`,'''~'' " l'',`,,`',';1'`~;`i1'''`,`,~`•l',;',:`' 9. UNLESS YOUR WETLAND HAS RICH SOIL OR TREATS RUNOFF FROM A G LF ,t: ~ ~ 1'','','~,',: ~ ~ 0 cc
,,,1 - . ~ , • \ ~ `I C; ; ~ ~ - C;`,',~ , ,1, ~ ~ COURSE, APPLY A SLOW RELEASE FERTILIZER TO EACH PLANT AS IT IS Z ~ z
• t • ~i^~ - - ..-::.;,F„ INSTALLED. AGSAFE AQUATIC TABS 20-10-5, 90 DAY CONTINUOUS FEEDING, 5 0 ~ _I ~ GRAMS, W R _ ' I O K WELL FOR WETLAND HERBACEOUS SPECIES. AGRIFORM 20-10-5 to 0
`S - - " CANTING TABLETS, 2 YEAR SLOW RELEASE, WORK WELL FOR > ~ ~ PLUS MINORS P W
~ : ~ ';tk~;; A , 'r TREES AND SHRUBS. DO NOT BROADCAST FERTILIZER, FERTILIZE AFTER ~ z
~Ct~ ,,II INSTALLATION, u, '1'~'~'~'`" OR APPLY LIME. ~
~1~•.~ ~ 'y z z
I'i`i1; ' i.`, '10: INSTALL CONTAINER GROWN WETLAND PLAN ~ ~ ~ - ° ~ TS FROM A REPUTABLE NURSERY
a ~ ,,,1,;.„~''., ~ ~ WHICH PROPAGATES FROM LOCAL WILD PLANTS. DO NOT PLANT CULTIVARS o a
1,~ ~ OR SUPERIOR SELECTIONS. DO NOT I _ - MPORT PLANTS FROM FLORIDA OR a ~ _ ~ - - ; t ~ ~ : . MINNESOTA AND EXPECT THEM TO ADAPT TO NORTH CAROLINA'S CLIMATE. DO ~ o ~
- ~F~ NOT HARVEST PLANTS FROM WILD P O ONLY WILL YOU HURT a { I - OPUCATION3 - N T
~ THE DONOR WETLAND, BUT YOU RISKINTRODU TIN INV w ° ~ ~ ~ : ; ~ ~ C G ASIVE SPECIES WHICH
r ~ - ~ WILL BE A ONOMICALLY EXPENSIVE TO CONTROL. ° g °
- _ ; ;`I ~(irllr~'; ; ~''.1'',~1'',1~';~',''?,~'''~,1''~,`;`!~';'. ;1 ';''.1??~'~`'_-<';~~; ~ 1. SMALL CONTAINERS OF 4.5 CUBIS INCHES OR GREATER CAPACITY ARE
~~'11,;',''I~'''!'~r,'~~'';lr;`,~'}"" !1'';',''~,',y'','~,"\\>'';;';;;'C;,;~1t;4, ' PERFECTLY ADEQUATE FOR MOST HERBACEOUS WETLAND SPECIES. WOODY F- ~ m i;l%~,''';~~-%~'llr'r,~, ; ' ! ( 1 ~'`''y ! I ~ ;1','~':ly;;~'~;}!',,',y?~~;,y,!,;;ti~;~;'1,;,1 . PLANT CONTAINERS SHOULD BE'TRADE GALLONS" (170 CUBIC INCHES) OR Q h rn o
' 1 J; ~
t ~`I I '1'~;''i';`,'-~,, LARGER.
I ~ 1~!'~'~ ''~~`'~,`~~'~;i,'' 12. MAKE THE CONSTRUCTION CONTRACTOR ENSURE THAT SHALLOW LAND AREAS
%i-, 'l~ ; ARE FULLY SATURATED BUT NOT FLOO~JED WHEN PLANT E NSTALLED AND
jri;l,+i'iIi`',''S';;.._-:.,"?~a, THAT SHALLOW WATER AREAS REMAIN FULLY AT RATED T LOOD ~ , ' S U BU DO NOT F
f ' II ~'',i, '~-r:-'~ ,;;r,,~~'~ 0 A DEPTH OF GREATER THAN 3 INCHES FOR 30 DAYS ~ - 1,; j;;?,' ; - T AFTER PLANT
~ - , ~ r, INSTALLATION, PLANTS COMPLETELY COVERED BY WATER FOR MORE THAN 48 `z '~l!r, ~ , /;'.-i;% HOURS WILL DIE.
:yl',~~, - - - - ~
_ - ~ 1 ~ ; ~ ~ . l / ~ ; j c ~ ~ 13. INSTALL HERBACEOUS PLANTS AND MOST SHRUBS IN LARGE DRIFTS OR
- , f-~-_ ,
, , ,
• ~ / ; •;~r~ 4. ~ l; ' _ - - -=--:;/%y E S DURING THE NSTRU TIN F A WET ,d;' , 14. EVEN MODERATE RAINFALL EV NT CO C 0 0 z
; x', , , , ' ~ DETENTION BASIN GAN CAUSE EXTENSIVE DAMAGE TO IT. PROTECTIVE J
MEASURES SHOULD BE EMPLOYED BOTH IN THE CONTRIBUTING DRAINAGE ~ ~ AREA, AND AT THE WET DETENTION BASIN ITSELF. TEMPORARY DRAINAGE OR ~ ~p ~ ~
EROSION CONTROL MEASURES SHOULD BE USED TO REDUCE THE POTENTIAL ~ ~
FOR DAMAGE TO THE WET DETENTION BASIN BEFORE THE SITE IS STABILIZED. ~
THE CONTROL MEASURES MAY INCLUDE STABILIZING THE SURFACE tMTH O z
i i e EROSION MATS, SEDIMENT TRAPS, AND DIVERSIONS. VEGETATIVE COVER AND ~ ~
THE EMERGENCY SPILLWAY ALSO SHOULD BE COMPLETED AS QUICKLY AS q
POSSIBLE DURING CONSTRUCTION. ~ 4
15. THE PERMANENT POOL OF WATER PRESENTS AN ATTRACTIVE PLAY AREA FOR z
CHILDREN AND THUS MAY CREATE A SAFETY PROBLEM. SAFETY
1 CONSIDERATIONS INCLUDE USING FENCES AROUND THE SPILLWAY
STRUCTURE, EMBANKMENT, AND WET DETENTION BASIN SLOPES; USING
SHALLOW SAFETY BENCHES AROUND THE WET DETENTION BASIN; AND
POSTING WARNING SIGNS.
16. A PROGRAM OF MONITORING THE AQUATIC ENVIRONMENT OF A PERMANENT
WET DETENTION BASIN SHOULD BE ESTABLISHED. ITEMS SUCH AS WATER
® ° CLARITY AND ALGAL GROWTH SHOULD BE MONITORED REGULARLY.
"1 r r~~~ { ,i
a ~ ~ 1 17. THE VEGETATION LOCATED ON THE VEGETATED SHELF MUST BE PROPERLY Q~~asaaaeoas
MAINTAINED IN ORDER TO ACHfEVE ADDITIONAL POLLUTANT REMOVAL AND IN ~®0~~°~1~ BAR®®®~
ORDER TO PREVENT BANK EROSION. BARE SPOTS, WEED, AND INVASIVE ~o~~ SPECIES SHOULD BE NOTED AND REMEDIED AS SOON AS POSSIBLE TO 4 6°®°'lg,~ i
PREVENT LARGER PROBLEMS. ALTHOUGH A REGULAR GRASS MAINTENANCE
°~9686~E82a8rr. PROGRAM FOR THE UPLAND LOCATIONS AROUND THE BMP WILL REDUCE WEED ~ ~ q BSI n, Inc. INTRUSION, SOME WEEDS INVARIABLY WILL APPEAR. PERIOOIG WEEDING WILL ~ ~ ~ ~3 0 ~
~®pea~~oaeea® a,-`° errs °°Y g® 0 ~ ~ { a~ THEREFORE BE NECESSARY. CHEMfCAL APPLICATION TO CONTROL WEEDS ~ ~
SHOULD BE CAREFULLY CONSIDERED AND MONITORED. FREQUENT ®+~`~~~y Ca
d MAINTENANCE ACTIVITIES SUCH AS REMOVING DEBRIS AND CUTTING GRASS wom~~
m ~:.y~~e Fcr~ . ~ m : 9q 4 9 e
- : Q ~ a . ~ ° ~ C-3072 n: ~ . ~ EET 4 I, 11 o i s V 82 WILL RESULT IN A FACILITY THAT iS BOTH FUNCTIONAL AND ATTRACTIVE. y OATE.• 18. SEDfMENTACCUMULATION SHOULD BE MONITORED THROUGH VISUAL i„i„ Anna
° ? o m m tp ° INSPECTION OF THE BASIN BOTTOMS AND THE SEDIMENT ACCUMULATION
DEPTH (704) MARKER. WHEN THE SPECIFIED DEPTH OF SEDIMENT HAS BEEN JOBNUMBER*
0 ° o® 'r Gg 1 . s\C~ TAIL D C 1 PLAN, PROFILE, AND ' ~ S o
''B VS d$SA88$&164816 ~ s,ge t?ES1G~ ®e®g 888989~$~a (70 ® ~V`784-2022 REACHED IN EITHER THE FOREBAY OR MAIN BASIN, THE SEDIMENT SHOULD BE 03-09.4 REMOVED AND DISPOSED OF PROPERLY, AND THE FOREBAY OR MAIN BASIN REPAIRED AS DESIGNED (E.G. PROPER VEGETATION REPLACED). SHEETNMUSEk•
cu fcu ani .rg
L 1 PLANTING PLAN 1a 1 P POND

STORMWATER BMP OUTLET STORMWATER BMF ATER BMP OUTLET
TaP ~ STRUCTURE -SECTION A-A STRUCTURE P~ JRE PLAN VIEW
SO' MIN NOT TO SCALE NOT TO SCALE r~or fa scan a~
5.0' Figure 10-4
Typical Submerged Orifice Outlet Configuration I ~ ' . 24 OUTLET PIPE
TOP OF POND 4•~~ I ~ • I I INV.=671.5 6" PVC ~
RISER TOP EL=675.5 I I ~ I Screw type plug 6 PUC tee
2' IWN. • I ' °I I
I i I , I I Outlet boz i 4.0' € ----------------._____q Tem~arary Pool
I I i 4.0 13° 3:1 MAXIMUM SLOPE I I I I e
, I~ I ( A~ ~ I { ~ a - _ o Permflnent Pool
24° {MIN.) I I ' a~ P..•°s .L a I 12"
3: t MAXMUM SLOPE \\i \ PV T P I I " \ J, 6 C 0 ,
~ ( } FIGURE 10-4 I P I I: ~v~~t~;r~a
~ SPILLWAYL CAN NOT BE 4 RISER HEIGHT A.
/ CONSTRUCTED FROM Flll " ~ • I I THREE (3} $ ORIFICES 4 MATERIAL - .I .I ° ° + r' + °
ELEV.-672.8 • I~ a o 0 CONCRETE WALL , . Y. ® ;
37° (MIN.) HIGH MIN. SIZE P6 1IN ° I / I • INV. 6.0" ORIFICE=671.5 .6, 6" PVC cap with 3.30"
6" WIDE MAK 9ZE=9 IN I I \ LENGTH dF RIPRAP DEPTH=13.5 IN 24 RCP SHOWN I I I (SHOWN FOR CLARITY) hole /orifice drilled ~a !
\ ` \ FOR CLARITY b 8.0 ORIFICE B.On ORIFICE s. °•a r .
\ / I i I ~ ELEV.=672.8 CONSTRUCTION FABfOC 24" RCP 6.0" ORIFICE I I• STRUCTURE INVERT ' ~ ELEV.=672.8 • .2 ° a ~
l I~ MIRAFl 700X OF APPRdVED E4uAL ELEV,=671.5 I ~ / I EL=671.5 A• . ~ ,J ' . Panel bottom
v .
a I .I ' d.
' Iai a 6 PVC BOTTOM i4 i
(FIGURE 10-4) 4. I 'I•
NOT TO SCALE 4 4 , J v 1.5 BASE (MIN DEPTH)
CONCRETE BASE ~ . a~. a 8.0" ORIFICE
a ~ a ELEV.=672.8 a GEOTECHNICAL NOTES:
STRUCTURE BOTTOM 1. SOIL BORINGS AND TESTING AT THE PROPOSED DETENTION POND U ~ N ~ ~ SITE FOUND SANDY GLAY SOILS ENGOUNTERED NEAR THE SURFACE ~ OD Q ~ ~
a • ~ ° ~ EL=670.0 „ THAT APPEARED TO BE A GOOD SEAL MATERIAL FOR DETENTION POND X ~ ~ ~
8.0 -6 PVC CONSTRUCTION. IF MORE PERMEABLE SOILS {SUCH AS SAND, SLITY ~ ®(V ~ ~
ELEV.-671.5 SAND OR SANDY SILT) ARE ENCOUNTERED IN THE BOTTOM OF THE ~ m ~
5.0' (FIGURE 10-4) DETENTION POND, THESE MATERIALS SHOULD BE REMOVED TO AT ®Z ~ ~
LEAST 2 FEET BELOW THE PROPOSED BOTTOM OF THE POND AND ~
REPLACED WITH COMPACTED AND TESTED SILTY CLAY OR CLAYEY SILT N ~ O MATERIALS ENCOUNTERED IN OTHER AREAS OF THE SITE. U Q ~ U
0 f11 J 0
LL ~ ~ _
~ Y ~
NOTES: ~
1. THE STORMWATER BMP OUTLET CONTROL STRUCTURE DETAIL 1S A ~ GUIDE FORBID PURPOSES. THE CONTRACTOR SHALL CONSULT WITH A
PROFILE SCALE PROFESSIONAL STRUCTURAL ENGINEER IN ORDER TO REVIEW AND
. HORIZONTAL.1 = 4a APPROVE THE STRUCTURAL DESIGN ELEMENTS PRIOR TO
. . CONSTRUCTION OF THE STORMWATER BMP OUTLET CONTROL
VERTIGAL.1 - 4 sTRUGTURE.
76n 2. RUBBER RING GASKETS SHALL BE INSTALLED TO FORM A FLEXIBLE, WATERTIGHT SEAL IN STORM PIPE RUN 20 TO 21, PIPE TO RISER w
I CONNECTION AND STORMWATER BMP OUTLET STRUCTURE. JOINTS ~
u „ _ _.__.....___.._T, _ 3/16 x16 B 7 ' BEFORE YOU DIG ! SHALL BE THOUROUGHLY WETTED BEFORE MORTAR OR GROUT IS ~ ~
PLATE STEEL _ r____._.. _ CALL 1-800-632-4949 APPLIED. ~
ALL SIDES l ( ) ; N.C. ONE-CALL CENTER p ~
702 ~ _ . - - I 8 ~ 'HIC SCALE Il'S THE LAW ! 3. BASIN WILL BE USED AS SEDIMENT AND EROSION CONTROL BASIN ~ ~
GRAPHIC SCAT ' ~ DURING CONSTRUCTION ACTIVITES. CONTRACTOR MUST RESTORE W a
e 4 7 ' - I, 40 0 20 40 80 a ! 0V i _ _ so Aso WET POND BASIN TO DESIGN CONflIT[ONS PRIOR TO USE AS A WET ~ z ~ DETENTION BASIN. ~ ~ ~
. n v _ . - w _ u~i°~
-I' 3/16 x8 g 4. PLACE INLET PIPE TOWARDS THE CENTER OF THE FOREBAY ~ ~ ~
698 - _ _ _I - t >N ~>JT ~ ANTI-VORTEX .6 IN FEET) AS-SHOWN. o ~ o
PLATE STEEL „ e 8" ~ I. _ ~ 1 inch = 40 fir. 8 _ . _ . . - _ ~h = 40 f~ a n ~
• 76 - _ -
696 - _ _ _ _ _ . _ _ _ i i ~ ~ ~ ; - , ...i_. _ _ 1
i r / . A c „ / / / r / ~ / / I ( ' f t ! ~ ~ TW- 880.00 ~ ~ w
9- ,r. ~ ~ ~ / / ~ ~ ~ ~ ` / / ~ ~ ~ / , i I ~ ~ f ~11~ , t BW= 678.8, ~ z ~ ~
i ~ _ ~ ~ J / / ~ / ~ ~ / ~ ~ ~/j rf ~ ~ ~ I ~ ~
CONRETE RISER I_ _ , ~t w
STRUCTURE 692 i _ . . . . , ~ /
„ l PROPOSED~GRADE i / i " / / i
I / 8 ~ _ _ _ 690 r~
_ , - -I / ` ~ ~
5 REBAR # ~ / / / ' ~ ~
" .C. EACH WAY 6 0 688 - r,... / / / / ~ / I ~ ! v.
~ / .
INSTALL SAFETY I ~I _ FENCE-! iL AL-ONG ~ / ' _ - / / J ,
ANTI-VORTEX TRASH RACK 686 _ , RETAINI GWALL ~ EXISTING GRADE j - - / / , - / - ~ / / ' ~ i ~ ~ y, ~ / 1 ' ~ ~ ~ TW= 880.00 ~ _ ~ / , ~ I ' ~ ~ i ! ~ { C' i`~~~i BMW= 672. ~ ~ ~ ~ ~ ~ o
PLAN V ~ _ . / ` Nor ra scaLE I / ~ / I ~ / ~ ti ' A ~ ~ ll \ ~ ~ ~ ~ LLJ ~
684 . _ _ _ ~
/ ~ l \ , ~ / ,'~w~sso to ~ I : t~l ~
. - - - ' / / I , ~ ~ \ ~ / BW~ 872. ~ ~ ~ ~ / j ~ ~ ~ ~ O
682 _ R AR 1fl' SHELF / / / ~5 EB / ~ / r _ ~ l Il 7~
6 O.C. EACH WAY zo' EME GENCY TOP OFDAM =ELEV. 6'80.00 ^ . ~ ~P6AC~E S v EY F~ RA1L~ ~ ~ / ~ ~ ~ ~ ~ ~~p~~ f~ ~ ~ ~ X11 l~l Ill ~ ~ ~ ~ ~ U
' 680 _ _ _ _ _ - ~ ON T P~ETAINING WALL. / ~ ~ ~ ; ' , 0~' ~ ~ ~ ~ l~ ~ ~ ~
3 16 x8 ELI?VATI N s78.oo ~ / . 7' FR ARD RETAINISIIG WALL ! - ~ / ANTI-VORTEX z s ~EBO - ~ {BY OTHERS} i - / '
_ ~ / ~ \ PLATE STEEL ~ - r , I ~ ~ (1 TI~- 680.00 ~ ~
~ TOP Ot: ISER EL= 75.50 ~ _ . n » n RETAINS G WALL i _
3 16 x 16 8 - ~ ~ =`680.00 , ~ / / ~ I v g 0
16 { INSTFi°LTRASFE;RA K-.~..._..~:_ ~ _ PLATE STEEL I I ' ' / _ '1"'~' ~ ~B =672.x.° / C1 ~ ~ ~ z
LL . T - a ~ - A SIDES ~ - ( ~ n _ ~ ~ - I 1 _ ~ ~ v ~ ~ ,1~~ ~ , ~ 1 Q. ~ v ~ 6 / '
- - CONRETE RISER 'a. • ~ ' • . • i 31s^oRI>~€cES..._. t Y / ~ •„FIEVATI N =674.17.. '
STRUCTURE ~ 6T4 -I~us7~:s ; 5'x 'x6"
CONCRETE ~ ~ = :TF~uiP RAR~P00 ,•E1fAT{ON-•672:Sa--_ _ l 11~~ ~ ~ , , / i1 a° o -r
AC K ANTISEEP ~ -I ' . ..I ANTI-VORTEX TRASH R ; RS ~ ~ COLLA__ _ P ELF=fi72,(p _
672 _ _ SECTION A-A I NORMAL POOL ELEVATION=s7i. ~ _ i ; ~ _ _ - _ 0
~ 66'`0 ~ / ~ ~ / 11 ~ •t a'
s" PvG E~.=s7~ .50 ! - - - 6~ _ ~ (FIGURE 1Q-4}._ G . ~ -
~ _ _
GONGREfEBASE 11U~•VEGETA'f'ED ~ - ? 10:1 VEGETATED NG RCP i ; S}iELF SLOPE
-~SHEI-F'SL E----~- -;24°~O°Rt>-.. _ 668 OP N LONGATED i @a7a~osl- ~ ~ ~ ~
u » ~ BERM ~ 3 16 x8 - _ _ ss ~ - =y.
ANTI-VORTEX J _ ! I _ _ _ 666; - e .
3/16 x16 PLATE STEEL #5 REBAR ! _ j ~ I . ~ s-. . - - ~ _ . ~ t ~ ~ _ - ~ ~ - - ~ ~ - 680.00 $
PLATE STEEL _ _ _ ~ _Ot~LU~.I~- ~ ' 6 O.C. EACH WAY I _ SEDIMEMT STORAGE j,~. _ - / _ _ - _ _ ,~1f~-E' ~ - ~ ~ l _ ~ ~ / , BW= 670.68 ~ ~
(ALL SIDES _ _ - 664 ~ . ~ ~ . -BPS - o °
J '_J .J ' ~ / 6
r~ . a • ~ • ~ 662 ! _ y - -4T4PSOIL~f}BEP}~RG J' .y ---''"''`~~6$ p4 / ° ~ ~ ss pIPE AIM`-69.00 f
• ~ ~ ' a • B GOMPAG D CLAY LI ER • \ J s .r-'', E~ ~ i ~ T~~~
- S(GEOTECHNIGAL ENGSNEER~SHALI=VERIFY~H 7HE~NSS I . \ \ . J ' ~ E.G. SILTY-CLAY, LOAMY-CIAO', OR CLAY OAM}AND HALL BE • ~ \ ~ .J - CONRETE RISER ~L+n i ~ {_~..~.,.x~T~.~,,,~.J~l~~l~~,a~~,~
- ~ ~ ~ ~4pOF y ~ ° ~c`~--'..~uGEN Y~A'tE P ~ _ i~ . ~ .~f lC,~~~ ''y ~ ~A~:•
• - VVIYII"f1V lGV iV /1V~lIGYG l11Y VVGIY'11 GLI LVYY IV Y Ill LVY \ \ f _ STRUCTURE YLINE \ /J jr-- INFILTRATION RATE (LESS THAN 0.6 INIHR). q ERWISE, CLAY / , gg _ ~'"~~"6 V GI<ACE SAFTEYENC J 1
S BEINS Wdj- ~S$/ / r r"``. s Tw- `'N~t+a~ W~ J \ rf°~ l ' / ~uly ZpU3 ss ,ON TOP OF R&AIN4G ?OgNU HER•
ANTI-VORTEX TRASH RACK ~r ss / _ / B = 672.66 / / i G ss f' / / 03-09°4
658 _ , - _ SECTION s s E TW= 6;811;00'`` _ CQN ~ SHA~LW__RSTALL RIP~RAP / r /
NOT To scALL< W=67 BE F WITH FINISHED RA11=' - f / / / f r r;'/ L SHEETMUMeER- °i W= 678.94 i f.~ / / /1. - '°J~ / / __SQ-THAT VENIGLES CAN~.~QSSVTHE ..j f
656 24' EMERG .NC $PILLW.AY @ to ILLW,AY @ ~ TIO 678.0Q. W= 68p.00 EASEMENT USiN fiFIF~ jRIPEyAP. / • ? r - '
I ; i ~fL CrE3t5 PLAP-ED IN UND11, A~fDINCINDISS- UFZBgp.SO~L BW=672.91 _ f-°.-• / / / °r~ s _ : -~~Y~ i J•\/\
0+00 + 1+00 + 2+00 + 3+00 + ' ' , r

1-
e®
Plant n - nd 9
KEY BOTANICAL NAME COMMON NAME SIZE SPACING QUANTITY
i Peltandra virginica Arrow Arum Large Plugs 1 Plug/4 Sq.Ft 301 "
~
2 Pontederia cordate Pickerel Weed Large Plugs i Plug /4 Sq.Ft 345
3 Saururus cernus Lizard Tail Large Plugs 1 Plug/4 Sq.Ft 364
~
4 Schoenoplectus tabernaemontani Soffstem Bulrush Large Plugs 1 Plug J 4 Sq.Ft 254
5 Iris virginica/lr?s versicolor Blue Flag Iris Large Plugs 1 Plug / 4 Sq.Ft 273
~ - o
6 Hibiscus rnoscheutus Rose Mallow Large Plugs 1 Plug / 4 Sq.Ft 217
7 Eupatorium frstulosum Joe Pye Weed Large Plugs ?Plug / 4 Sq.Ft 195

r, 8 Magnolia virgr'nica Sweetbay Magnolia 7 gal. 5 =0" o,c. 54

r: 9 Hex glabra Inkberry T gaL 5 =0" o.c. 33
10 Betula nigra River Birch ZZ"Cal. As Shown 5
_ ~ , r -
11 Taxodium distichum Bald Cypress 2?" Cal.. As Shown 5
~~x< ~ a,, r>
~
ys~,~. ~C
~ / r''y ` .r~ r ~'~T, Optional (ants i a ove not available
' f>r~~ r '
r~ ~ y r;~ Plants Below Pond Elevation -Shallow Wafer Plants ci N ~ ~
f<-~ a ~r ~x ~ r. 90 70 ~ oo ao cv
. - xo o~
~K, Sagittaria latifolia Auck Potato Large Plugs i Plug /4 Sq.Ft ~ iV i3I
- - J Sparganium americanum Bur-reed Large Plugs 1 Plug/4 Sq.Ft ®{J 0~U ~
`~1 Planfs Above Pand Elevation -Shallow Land Plants ®o- ~ ~
~ J.,
- \ _ - _ ~ Carex species Tussock Sedge Large Plugs 1 Plug / 4 Sq.Ft t} ~ V
90 2 ~0 ~ I,® EtS J J r bie
_ L ' Juncus species Large Plugs 1 Plug / 4 Sq.Ft Z ~ ~
- v s- ~ - ~ 1#ea virginica Sweetspire 7gat 5`-0" o.c. Y ~S
. \
\ r.~. _ 5_ ~ _ ~ \ , Viburnumnudum Possumhaw 7gal. 5=0"o.c. '
, , ~;g
- , .,,A: ~ ` $ Carpinus caroliniana Ironwood 2~" CaL. As Shown
~ : s .
5 ~ . M ' n ` ' ' Ptant Material Sources ~ N
Herbaceous Plants:
- 9 ~ , , \A. ~ ' ' Coastal Plain Conservation Nursery o
. v _ ~ -,oo _ 3067 Conners Drive ~ ~ ~
Edenton, NC 27932 0
7 ~ ~ . 90 V~GETATE® _ ~v - X252) 462-5707 ~ ~ ~
Sf/ELF
_ _ Woody Plants: > ~ ~
Turtle Creek Nursery & Garden Center ~ o z o
_ - -~`r ~ - HWY 3 North ~
. - - - - PONfl PPE ~ - Davidson, NC 23032 a ~ Q
{704) 663-3954 ~
~Z
0 - _ - I a. o
Note. Sources other than those listed above must be aprov prier to purchase a ~ o
. _ w-- w_ _ ..g J .I.? ~ m _ _ ~
PLaNTrNG NOTES
~ , - , _ _ ~ ALL HERBACEOUS PLANTS WITHIN THE SHALLOW WTE1R ZONE SHALL BE INSTALLED w ~ o
k, BETWEEN APRIL 1 AND JULY39. INSTALLATION PRIOR TO OR AFTER THESE DATES SHALL N
a - - Q Mrs ; . ~ BE APPROVED BY THE OWNER. o ~ ~ a
s . - - r:
, ~ , ~ x y ry t V \ Y Jr 2. ALL PLANTS SHALL BE KEPT MOIST AND SHADED ATALL TIMES, PLANTS THAT BECOME
e. ~ d u y { DRIED OUT SHALL BE REPLACED A T NO ADDITIONAL COST
~ J H ~ v 3. ALL SHALLDWLAND AND SHALLOW WATER PLANTING.AREAS SHALL REMARKED AND
h ,,5. f.yf1 n' % \'`\Y\,`~, \t` \~~~1 if?Y4 ,XY~~ S py"~t ~ ..y y^l~,!i''Ir~x?~~ ~~/rl 'I x~~ / ri^T~s~''~j~Yr~:,,Z/''.\ ~ , - APPROVED BY THE OWNER PRIOR TO PLACING PLANTS.
~jy r• ~y LE'T' i„ur c%,",,n~r ,`:x 4. PLANTING HOLES FOR HERBACEOUS PLANTS SHALL BE DEEP ENOUGH SO ROOTS DO
1 \ ~.r NOT'KINK` OR FOLD, AND CROWNS ARE A T GRADE LEVEL.
5. CONTAINERIZED SHRUBS AND/OR BALLED AND BURLAPPED TREES SHALL BE PLANTED ~
- _ ~ _ ~ IN ACCORDANCE WITH AMERICAN STANDARDS FOR NURSERY STOCK
,:a yu r _ c.„~- - vvv 6. APPLYAPPROXIMATELY 5 GRAMS OF SLOW RELEASE FERTILIZER TO HERBACEOUS N
) rya ~ PLANTS, AND APPROXIMATELY 20 GRAMS TO CONTAINERIZED PLANTS.
,.Y \~rk v~ ~ M r ~ ??n 7 s'ir' - ~ • ~ ~ - . a"o ~ 4,,.~,~ . , 7. CONTRACTOR SHALL ENSURE THAT PLANTING SOIL 1S THOROUGHLYMOIST ORWET o
c ~ _ PR/OR TO PLANTING. ~
_ 1~ _ . _ _ ~
. t w ...SHELF ~ _ . 9 _ S. ALL PLANTS SHALL BE IRRIGATED OR WATERED SO THAT SOIL !S SATURATED FORA
_ MINIMUM OF 60 DAYS AFTER PLANTING. ~
. L 90. rrvrW °z

T9 19
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r_R n purr R A A Ta Tr C l~ k T F'i DATE:
%.A lbl3,i J. L.L v .l 14LZL Ltty 1./V.CLliil July 2009
2V 2V 20' ao' s4' JOBNUMBER.'
03-09.4
BEFORE YOU DIG I
CALL 1-800-632.4948 IN FER ( IN FEET ) SFIEETNUMBER.'
N.C. ONE-CALL CENTER i inch = 2 1 inch = 20' ft,
ITS THE LAW ! L 1