20071760 Ver 1_Stormwater Site Plans_20071217

DVS 60:2 R
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^ 1 1 ~ zoos 2007
D 1 1 ~ ~O ~ ++'F': hNn;~.«~;NA7cRQUALITY ~UAL]TY
OPERATION AND M OPERATION: MAINTENANCE PLAN: NOTES: 1} m rj
1. THE DETENTION POND MUST BE STABILIZED 2 N ~
LIZED
WITHIN 14 DAYS OF CONSTRUCTION. STABILI MAY BE IN THE FORM OF FINAL VEGETATION 4BILIZATION Q. PION 4
THE POND WILL BE INSPECTED ANNUAL AND TO SCHEDULE ANY REQUIRED MAi ANNUAL INSPECTION: NUALLY TO VERIFY IF THE FACILITY IS OPERATING AS DESIGNED PLANTINGS OR A TEMPORARY MEANS UNTIL TIL ~ o
MAINTENANCE. THE FOLLOWING ITEMS WILL BE INCLUDED IN THE ~GETATION BECOMES ESTABLISHED. 5
2. ALL CONSTRUCTION, MONITORING, AND
MAINTENANCE GUIDELINES IN THE NCDENR
R
-EMBANKMENT SETTLING, WOODY GR SPILLWAY CHANNE TO NTER -SIGNS OF SEEPAGE OR PIPING ON STREAM AT ANGLE -CONDI170N OF GRASS COVER ON T -RIPRAP DISPLACEMENT OR FAILURE Y GROWTH, ANIMAL BURROWING, AND SIGNS OF PIPING STORMWATER BMP MANUAL MUST BE ADHERE ON THE DOWNSTREAM FACE OF THE EMBANKMENT HERED T0.
N Q r
~N THE EMBANKMENT, BASIN FLOOR, AND PERIMETER OF BASIN
r 2
LURE
-PRINCIPAL OR EMERGENCY SPILLWA -OUTLET CONTROLS LLWAY TO CONFIRM THAT THEY MEET DESIGN PLANS FOR OPERATION EROSION CONTROL NO EL
10TES*
- BYPASS SWALE -SAGGING OF THE OUTER BARREL
TO MEET SPILLWAY CH N -OUTLET CHANNEL CONDI110NS 1. INSTALL EROSION CONTROL DEVICES AS S PER ALL NCDENR AND CITY OF RALEIGH iS SHOWN
-SAFETY FEATURES STANDARDS.
SS SEED BELOW LEVEL -ACCESS FOR MAINTENANCE EQUIPM BYPASS S RU RE -CLOGGING OF THE OUTLOW PIPE UIPMENT
f
SPREADER T,0 BUFFER
SEE SHEET FO ETA -SEDIMENT ACCUMULATION
INV IN 92.0 LEGEtlQ v
JUNCyION BOX W MAINTENANCE:
ROCK PIPE INLET PRO TOPS Of BERMS AND ON THE EXTERIOR SLOPES OF EMBANKMENTS. PROTECTION
INV IN 93.34
IN~/i-OUT 93.34 V
36~~~D CPP 1. MAINTAIN TURFGRASS ON THE TOPS O ~N rA 00
40 LF Z• REMOVE ANY SEEDLINGS OR PLANTI 3. MOW TWICE ANNUALLY, KEEPING GR ~ 3.35% 4. PLUG ROOT VOIDS AND ANIMAL BU PLUGGING THE BURROWS DOES NO ~ . ' EXISTING SHOULD BE TAKEN TO REMOVE TH ATTRACTIVE TO THEM. _ANTINGS ON DAMS, EMBANKMENTS, AND SIDE SLOPES oo'oo°o~ EX RIPRAP V! N 'n 00
125 LF LEVEL SPf~EADER #1 G GRASS NO SHORTER THAN 6 INCHES. ~°o°°^~
. BURROWS WITH MATERIAL SIMILAR TO SURROUNDING MATERIAL. IF
ND 5 SF FOREBAY~(5.5' X 125') .NOT DISCOURAGE ANIMALS FROM RETURNING, FURTHER MEASURES PROP RIPRAP o ~
SEE SHEET C3 FOR DETAILS , , ~,~o ooo ono° o
THE ANIMAL POPULATION OR MAKE AREAS OF THE FACILITY LESS
~ MODI D P 5. CLEAN TRASH AND DEBRIS FROM B 6. REMOVE SEDIMENT, MUD, AND SAND )M BASIN AT LEAST TWICE ANNUALLY. VIA I co Z 0
SAND EVERY 2 TO 10 YEARS OR WHEN THE BASIN HAS LOST APPROXIMATELY 00 4~ W ..c1
0 0 ° 20 PERCENT OF ITS CAPACITY. ON ONCE MATERIALS ARE REMOVED, STABILIZE DISTURBED AREAS IMMEDIATELY. SILT FENCE LD 00 0
vmq
\~ooo Q 57-~-[F _ PLANTING/SEEDING: CLEARING LIMITS
!N _ UU_,L- y `
a~
1. SEED ACCORDING TO THE SCHEDULE DULE SHOWN.
-
° MODIFIED OU T T C R
° ' - - - SEEDING S 36"~s CPP IN 94. SCHEDULE
r
~ OR (FI C N V . O6 PERMANENT SEEDING -
GR A TE I N V 9 9. 0 _ a!~~~ERS. ODE DITG~ G s~ ~E~ IYPE iLOPES MAX.
Oa
.o PLANTING RATE Seedbed Preparation:
I 1 ~~RUC AUG. 15- NOV. 1 TALL FESCUE 1. Chisel compacted areas and spread topsoil three 200 Les./ACRE inches deep over adverse soil conditions, if ava(lable. U
- NOV. 1 - MAR.1 TALL FESCUE 200 LBS./ACRE *(NURSE CROP) 25 LBS:/ACRE 2• Rip the entire area to six inches deep.
` ~ - 95.0 3~ ~t CPP l/V V 94. ~ MAR. 1 -APR. 15 TALL FESCUEUZZI RYE *(NURS ENING A T BASE 4 D3j JU E 15- SEpT.30 qLL F~ESC~UEM~ BERMUDAGR lNV 1 D4.05' 2o01.eS./ACRE 3. Remove all loose rock. roots, and other
AUDAGRASS 15I.BS./ACRE obstructions leaving surface reasonably smooth and A'
-~DBI-TI~AIeL~RtPF34P uniform. 4. Apply agricultural lime, fertilizer an dsuperphosphate fie
PERMANENT SEEDING - uniformly and mix with soil (see mixture).
~ APES (3:1 TO 2:1) 5. Continue tillage until swell-pulverized, firm s~~1o1' 00
AUG. 15-NOV.1 TALL FESCUE 200 CBS/ACRE reasonably uniform seedbed is prepared four to six
~ too.o~ ~SS~B R ~ ~ -o°°o°o°°`o AND SERICEA IESPEDEZA NOV. 1-MAR.1 TALL FESCUE EDEZA (UNHULLED. UNSCARIFlED) 60 TO 70 LBS ACRE inches deep. ~~~••.FNOINF~ ~r
~ 22"III 00000 ANO CERICEA LESPEDEZA 200 LBS ACR 6• Seed on a freshly prepared seedbed and cover seed PEDEZA (UNHUtlED, UNSCARIFlED) 60 TO 70 LBS/ACRE lightly with seeding equipment or cuitipack after ~ F
~ ~ \ o~o~o~or< ANA ABRUZZI RYE MAR. 1-JUNE 1 TALL FESCUE
~ \ SEDIMENT A EN T AND SERlCEA LESPEDEZA 2 O~BS%ACRE seeding. EDEZA (SCARIFlED) 40 TO 50 LBS/ACRE Mulch immediately after seeding and anchor mulch.
\ / I ~ \ ~ 9 O FOREBAY MAR. 15-JUNE 3Q WEEPING LOVEGRASS :BAY MAR. 15-~1NE 30 HULLED COMMO~W M DAGR ANO SERICEA LESPEDEZA 10 LBS/ACRE 8• Inspect all seeded areas and make necessary repairs
EDEZA (SCARIFlED) 40 TO 50 LBS/ACRE or reseedings within the planting season, if possible. IUDAGRASS 15 LBS/ACRE if stand should be over 60~ damaged, re-establish
t EDEZA (SCARIFlED) 40 TO 50 L8S/ACRE following the original I(me~ fertilizer and seeding rates.
~PORARY SEEDING 9. Consult EFS Environmental Engineers on maintenance
\ / `~I~ Exisr~NC 9~ o JUNE 1-SEPT. 1 TALL FESCUE tratement and fertilization after permanent cover is
~ ~ ,i lNV OUT 4. ' AND BROWNTOP MILLET +(N 200 des ACRE established. C
OR SORGHUM-SUDAN HYB AUG. 15-APR. 15 RYE (GRAIN) 1N HYBR DS *(NURSE CROP) 30 LBS% ~E Apply. Agricultural Limestone- 2 tons/acre Fertilizer - 10-10-10 Analysis O 900 Ibs/acre
120 LBS/ACRE Superphosphate - 500 Ibs/acre of 20~ analysis t
/ 9S O )IL CONSERVATION SERVICE FOR Mulch - 2 Tons 80 Bales) Straw/acre COiLU
~ ADOITIONAI~INFORMA~110N CONCERNING 07HERSAL?ERN OF DENUDED AREAS. THE ABOVE VEGETA?lON RATES UNDER LOCAL CONDITIONS; OTHER SEEDING RAlE CO +NURSE CROP_LTEMPORARY -RESEED ACCORDING TO PERMANENT VEGETATION. DO NOT ALLQW TEMPORARY 4LTERNATIVES FOR VEGETA110N Anchor -Ube liquid asphalt ~ 400 gals/acre RATES ARE THOSE WHICH 00 WELL or emulsified asphalt ~ 300 gals/acre
S' ~ ~~oQ AlE COMBINAl10NS ARE POSSI6LE. 7 ~t
NG TO OPTIMUM SEASON FOR DESI~tEO cd 0
IN HEIGHT BEFORE MOWING, OTHERNASE FESCUE MAY B t~ SEDWENT STORAGE tRAME AN AREA, NNd 1.5' Dk~P EIEV 99.0 ~ORARY COVER TO GROW OVER 12 EM ER GE C SP LWA Y:
MAY BE SHADED OUT. N Y I L Ohl ky* 00 m
~ ~ memo
~ ~
SWALE LENGTH = 224 FT
p UPPER INV = 100.00 L 0 0 U 0 0 0 co
r+~ac LOWER INV =STREAM BANK
~ TOP 703.59 / ~ ~ ~QS, o INV.• .59' / oc r~ of o~w asv ~w.oo tRAME AND GRAZE APPROX. 89.00
~ °9'0° ~ ~ ~~Y'~ ~ s~rowe SIDE SLOPES = 3:1
a-~r et~v w s4 ~ assa~~~ Nw~oo~s~ ~ BOTTOM WIDTH = 25 FT
SWALE DEPTH = 1.0 FT
2"~ LINING = 9" ROCK RIP RAP
r ~ ~ OVER 6" OF #57 STONE ENE co
i
i s~oNe: ~r ou?. ass e awww ~ 3°' ~r~iui ~?~t~a, eox Iwo c~+ ro ew~ss s~rnuc,~
aass e oR ~ rt hack B ~ ~ `~'E` BYPASS SWALE:
/ SEDIIENT FORE811Y SWALE LENGTH = 8 FT
UPPER INV = 92.00 ~1
LOWER INV = TO MEET SPILLWAY
i c HIC SCALE DE~'fENTION P SIDE - 1 JAY Q
20 0 0 m m a a - OND CRO NI 'OSS SECTION AND OUTLET DETAIL BOTTOMSLOPESWIDTH
~b 3.4 FT 0 N
,4q 3x t L VI IL) ~ NOT TO SCALE SWALE DEPTH = 1.0 FT
(ar rear ) LINING =GRASS WITH STRAW WITH WITH z z U
ftd IL 1 Inch 20 ft. NET TEMPORARY LINING PING ~ ~1a
~x r~
L 6
Y {4.. F { 5 1' ~a,'

m
n
Level S reader T e 1 ditch secti Level Dim. E Dim. D Dim. C Prima Dim. S reader 10** 1*** Boz Boz Boz Dischar e Pi 2**** Weir ?ection too en throat basin Size Schedule
Level Com Com uted Len Re aired Foreba Size 2 N ~
)im. B Dim. A Outlet Ener Dissi ator S reader 2 Re u Weir Weir 3***** No.* cfs ftlc :i ht ft Len h ft cfs Len h ft Width ft Stone Thickness in 1 2.15 58
Re aired Com . Level S reader 0.2% of Im .Area
ftlcfs Len h** Len th ft Area s a g 0
No. * cfs cfs Width ft Len th ft Hei ht ft Size inches cfs Hei ht 58 124.7 125 665 0. ~
S
21.30 2.95 4 4 4 10 2.95 2.20 2.20 4 21.33 10 4 6" class B 22"
20 2.78 4 4 4 8 2.71 1.75 1.75 4 17.29 10 4 3" class A 9"
15 2.08 4 4 4 8 2.15 1.00 1.00 4 12.85 10 4 3" class A 9" N Q r
10 1.39. 4 4 4 6 1.5 2.40 2.40 4 8.5 6 4 3" class A 9"
5 0.69 4 4 4 4 0.71 2.50 2.50 4 4.29 6 4 3" class A 9" r Z
* See plans for Level Spreader ID number
* * 10 = 7.2"/hr storm intensi Eder ID number
1 =1 "/hr stoma intensi * See laps for Level S reader I **Len h = Q1 x Com site len
e len x aired
2 =Maximum flow from rim dischar e orifice
3 =Maximum flow from second dischar e weir
•
d U
! z ( EXTEND TO H
t ~H 1 DAYLIGHT

4" PERFORATED HDPE *PM V
~ ~ UNDER DRAIN. PIPE TO
OUTLET RIP RAP ENERGY BE SUPPLIED WITH FILTER SOCK 00 tw- y N Wl 00 o0
DISSIPATOR~ SEE SCHEDULE N
F
LEVEL SPREADER LENGTH LEVEL SPREADER
LEVEL SPREADER LEVEL SPREADER INLET CHANNEL 4" CONCRETE LIP
CONCRETE LIP LINE WITH NON-WOVEN FILTER FABRIC AND CLASS A (3"DIA.) STONE, 6" THICK 0

3' DISCHARGE STRIP 00 00
3" LAYER OF #57 STONE
i` OVER NON WOVEN FILTER FABRIC
1

cV
-
' FLOW BYPASS BASIN LEVEL SPREADER t,~ :~••t..~:. ~ ~`"'"-~4 DOWELS ~ 5' O_C_
_ a..~,~... .w.~.... _ ~ CONCRETE FOOTING VJ is
•.t~..w,.~. M 04 oa
8" X 16" CONCRETE
4" PERFORATED HDPE FOOTING t~ p0
UNDER DRAIN. PIPE TO BE SUPPLIED WITH FILTER SOCK
x O
~o M
w EADER FOREBAY LEVEL SPREADER INLET CHANNEL 00 or
NON-WOVEN FILTER FABRIC LINE WITH NON-WOVEN FILTER FABRIC > A (3"DIA.) STONE, 6" THICK AND CLASS A (3"DIA.) STONE 6" THICK O - M
LEVEL SPREADER SECTIaN
NO SCALE
• i

General Diffuse Flow Notes
to for the life
YJ PLAN vl E W 1. Diffuse flow shall be maintained into any and all riparian features outside or offsite for t of the project.
2. The developer, Home Owners Association, or other legal entity shall maintain all diffuse diffuse flow .OOP owl
N 0 SCALE features in perpetuity and shall make all necessary reports, submittals, and repairs as should required by the NCDENR DWQ. should be
3. Diffuse flow measures sha11 be constructed to function as intended. Level spreaders sha level. Diffuse flow measures shall provide diffuse flow. ;rs sha11 be
trr
4. Following construction of all diffuse flow measures, the engineer shall make a cite inspe to verify construction of these devices. As-built survey data will be provided by the develo and a record drawing of construction shall be submitted to NCDENR-DWQ documenting inspection
ieveloper,
sting
compliance with all approved plans. 01
5. All diffuse flow measures shall be enclosed in a 20' maintenance easement.
6. All requirements of the NCDENT-DWQ shall be complied with for any future maintena construction, or alteration of any diffuse flow measures. Any permits required shall be obta by the developer, Home Owners Associationm, or other legal entity having maintenance intenance, Cd C
~e obtained O
ice co
responsibility for these measures.
CO
LM 0 7t: 0
2 z LEVEL SPREADER
W . c~ CONCRETE LIP
W •~i•. ' o= F LEVEL SPREADER LENGTH nowi

T ; , C~ ;t ~ 1 DISCHARGE W3 . e,. _ 0
W 0= 0()
U • t ~ , , • Z ' > . CO
~ k~• . FLOW BYPASS 8A; Ul , • M PASS BASIN ,CL
+ ~ f . 1 tt j~f ? • + 4" PERFORATED HDPE UNDER DRAIN. PIPE TO
wr 8E SUPPLIED WITH FILTER SOCK cd
• # • • ~ fps
• r¦w c))
0 .r¦r
DISCHARGE PIPE SEE SCHEDULE) LEVEL SPREADER FOREBAY LEVEL SPREADER INLET CHANNEL \ LEVEL SPREADER co
• IN. SLOPE 0.5% LINE WITH NON-WOVEN FILTER FABRIC LINE WITH NON-WOVEN FILTER F AND CLASS A (3"DIA.) STONE 6" THICK AND CLASS A (3"DIA.) STONE, 6 SECTION VIEW ANNEL CONCRETE FOOTING
TER FABRIC ?NE, 6" THICK i
I
i
I
NO SCALE NO SCALE o CY)
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