1390 Begonia Street 15-DRTV-1031 Site Plans(5.05 FND. CONC MONT
MES
(NO 1. D.) ELEV. (4.46)
0.4' (4.05). o
6'± D I T C H
(5.05). . . . . . . . . . . . . (TYPICAL)
0 12" WOOD POST
3' HIGH
n
(5.01) _ (6.2)
O
chi
WEST 14th STRE ET BENCHMARK O
WOOD POWER o
(50.0 FOOT RIGHT-OF-WAY) POLE
(4.75) NOT PAVED PK NAIL IN POLE
{ )
ELEVATION (7.83) Q
(6.05)
,9 6" WILD OLIVE
6 HICKORY
..,•„•............. 9, I
,�,• 7 OAK 9,
FD. /2 IRON , 7" OAK 7 OAK
(LB 231):: 102.00 6" OAK
(5.8} ::: .. 18 INE }.
0
:a;
m
.:
9
f i
UI
::':;:• r
..................
C�
0
;:. TWIN 23 o m
J
?;:...:::;.: HI C K O R Y C3
14 HICKORY °
99
^_ 14 PALM
• PROPOSED 1 STORY R SIDE�JCE
O FF EL. - 7.00
_s
5.
-. ..
(6.4)
6" WILD
OLIVE
90.19' ,.r�l
(4.9)
FD, 1/2" IRON
(LB 5231)
.5'
PROPOSED STORMWATER STORAGE AREA
N
. 1 .
102.00'
INSTALL SILT FENCE (SEE DERAIL)
MANHOLE
ELEV. (6.69)
1 @
(6.38
(6.66)
z
w
PRE -DEVELOPMENT RUNOFF VOLUME:
w
17" PAL
EDL
9" MAGNOL'
C3
Ll-
o
RATIONAL RUNOFF COEFFICIENT "C" - 0.4
8" MA NOLIA
�
O
13"
0
_
on
HICKORY
oz
Lli
PERVIOUS AREA - 7,143.8 S.F. - 2,985.3 S.F. = 4,158.5 S.F.
Q
O
X (2,985.3 S.F.)/7,143.* S.F.
WEIGHTED RATIONAL RUNOFF COEFFICIENT C = 0.49
U
25 YR. - 24 HR. RAINFALL DEPTH FOR ATLANTIC BEACH - 9.3 INCHES
�
RUNOFF VOLUME = (0.49) X (7,143.8 S.F.) X (9.3 INCHES/12 INCHES/FOOT)
cO
�
o
CA
ELEVATION AREA (S.F.)
5.0 727 S.F.
12"
PALM
22" LIVE OAK
545 S.F. > 512 S.F. OK
PROPOSED STORMWATER MANAGEMENT SYSTEM MEET THE MINIMUM REQUIREMENTS OF THE CITY OF ATLANTIC BEACH
MANHOLE
ELEV. (6.69)
1 @
(6.38
(6.66)
z
w
PRE -DEVELOPMENT RUNOFF VOLUME:
w
DRAINAGE AREA - 7,143.8 S.F.
EDL
Q
3:
Ll-
o
RATIONAL RUNOFF COEFFICIENT "C" - 0.4
0
q
�
O
RUNOFF VOLUME = (0.40) X (7,143.8 S, F.) X (9.3 INCHES/12 INCHES/FOOT)
= 2,214.6 C.F.
POST -DEVELOPMENT RUNOFF VOLUME:
CD
=_...� PERVIOUS AREA (ROOF, 6RIVEWAY 8c SIDEWALKS) - 2,985.3 S.F.
PERVIOUS AREA - 7,143.8 S.F. - 2,985.3 S.F. = 4,158.5 S.F.
O
X (2,985.3 S.F.)/7,143.* S.F.
WEIGHTED RATIONAL RUNOFF COEFFICIENT C = 0.49
O
Li0
25 YR. - 24 HR. RAINFALL DEPTH FOR ATLANTIC BEACH - 9.3 INCHES
RUNOFF VOLUME = (0.49) X (7,143.8 S.F.) X (9.3 INCHES/12 INCHES/FOOT)
= 2,726.8 C.F.
�
o
STORMWATER STORAGE VOLUME:
ELEVATION AREA (S.F.)
(6.47)
DL
9 � ��1 8" PALM
- 10 MAGNOLIA
\1
19.0 ------------
1(6-64)
DRAINAGE DIVIDE (T P.)
DRAINAGE AREA x1,143.8 S.F.
FD. /2 IRON
(RLS 3129)
4I
i
OPTIONAL POST POSITIONS
POST (OPTIONS: 2"X4" OR 2 1/2" MIN. 20*±
DIA. WOOD; STEEL 1.33 LBS./FT. MIN. < PRINCIPLE POST
POSITION (CONTED
6' MAX. FILTER w 20" TOWARD FLOW)
FABRIC
FILTER FABRIC
w
SILT FLOW
GRADE ----^
N iY7 °Q I
U ELEVATION Li
SECTION
TYPE III SILT FENCE
N.T.S.
EROSION CONTROL NOTES:
1. ALL AREAS DISTURBED AND LEFT FOR MORE THAN 30 DAYS MUST BE SEEDED AND
MULCHED UNLESS OTHERWISE NOTED, CONTRACTOR MUST MAINTAIN NEWLY GRADED
AREAS AND REPAIR AREAS WHERE SETTLING AND EROSION HAVE OCCURRED,
2. CONTRACTOR MUST PROVIDE ALL MATERIALS AND TAKE WHATEVER MEANS NECESSARY
TO PREVENT THE EROSION OF AND DEPOSIT OF SEDIMENT ON ADJACENT AND
DOWNSTREAM PROPERTIES, CONTRACTOR MUST IMPLEMENT AND PROVIDE SUITABLE
EROSION CONTROL MEASURES (I.E. SEDIMENTATION BARRIERS, HAYBALES,
SILTATION CURTAINS, TEMPORARY DETENTION DISTILLING BASINS, ETC.) TO
ENSURE THE CONTROL OF STORMWATER RUNOFF, THIS PLAN DESCRIBES THE MINIMUM
AMOUNT OF EROSION PROTECTION REQUIRED BY PROPOSED ACTIVITIES. IN THE
EVENT OF UNFORSEEN EROSION, OTHER MEASURES OF EROSION CONTROL (EROSION
CONTROL ACTIVITIES SUCH AS THOSE LISTED ABOVE), WILL BE REQUIRED.
3. TURBIDITY BARRIERS MUST BE INSTALLED AT ALL LOCATIONS WHERE THE
POSSIBILITY OF TRANSFERRING SUSPENDED SOLIDS INTO THE RECEIVING WATERBODY
EXISTS DUE TO THE PROPOSED WORK. TURBIDITYBARRIERS MUST REMAIN IN PLACE
AT ALL LOCATIONS UNTIL CONSTRUCTION IS -COMPLETED AND SOILS ARE STABILIZED
AND VEGETATION HAS BEEN ESTABLISHED. TREREAFTER THE PERMITTEE WILL BE
RESPONSIBLE FOR THE REMOVAL OF THE BARRIERS.
4, PERMANENT VEGETATIVE COVER MUST BE ESTABLISHED ON ALL EXPOSED LAND
SURFACES WITHIN ONE YEAR FROM THE DATE THE CONSTRUCTION IS COMPLETE.
5. CONTRACTOR SHALL PLACE SILT FENCE ALONG PROPERTY LINE AROUND THE ENTIRE
SITE PRIOR TO COMMENCEMENT OF CONSTRUCTION. '
REQUIRED STORMWATER STORAGE VOLUME (PER CITY OF ATLANTIC BEACH)
PRE -DEVELOPMENT RUNOFF VOLUME:
DRAINAGE AREA - 7,143.8 S.F.
THE ENTIRE SITE DRAINS FROM BEGONIA STREET TO THE WEST OR REAR
THE ENTIRE SITE IS UNDEVELOPED WOODED
RATIONAL RUNOFF COEFFICIENT "C" - 0.4
ENTIRE PRE -DEVELOPMENT SITE IS PERVIOUS
25 YR. - 24 HR. RAINFALL DEPTH FOR' ATLANTIC BEACH = 9.3 INCHES
RUNOFF VOLUME = (0.40) X (7,143.8 S, F.) X (9.3 INCHES/12 INCHES/FOOT)
= 2,214.6 C.F.
POST -DEVELOPMENT RUNOFF VOLUME:
DRAINAGE AREA - -7,143.8
=_...� PERVIOUS AREA (ROOF, 6RIVEWAY 8c SIDEWALKS) - 2,985.3 S.F.
PERVIOUS AREA - 7,143.8 S.F. - 2,985.3 S.F. = 4,158.5 S.F.
WEIGHTED RATIONAL RUNOFF COEFFICIENIT ;;Ci: _ (.2) X (4,158.5 S.F.) + (.9)
X (2,985.3 S.F.)/7,143.* S.F.
WEIGHTED RATIONAL RUNOFF COEFFICIENT C = 0.49
25 YR. - 24 HR. RAINFALL DEPTH FOR ATLANTIC BEACH - 9.3 INCHES
RUNOFF VOLUME = (0.49) X (7,143.8 S.F.) X (9.3 INCHES/12 INCHES/FOOT)
= 2,726.8 C.F.
REQUIRED STORAGE VOLUME: 2,726.8 C,,F. - 2,214.6 C.F. = 512 C.F.
STORMWATER STORAGE VOLUME:
ELEVATION AREA (S.F.)
5.0 727 S.F.
4.0 364 S.F.
TOTAL STORMWATER STORAGE VOLUME = 727 S.F. + 364 S.F./2 X 1.0 FT. =
545 S.F. > 512 S.F. OK
PROPOSED STORMWATER MANAGEMENT SYSTEM MEET THE MINIMUM REQUIREMENTS OF THE CITY OF ATLANTIC BEACH
CONSTRUCTION PLANS
OF Z�
SITE DRAINAGE IMPROVEMENTS Q
F QR,
PROPOSED RESIDENCE z
ATI
BEGONIA STREET WEST 1 th STREET p
ATLANTIC BEA•,CH, FLORIDA � DATE
i
LEGEND
(6.4) EXISTING SPOT ELEVATIONS
5.0 FINAL GRADING CONTOURS
310" MAGNOLIA EXISTING TR�ES
Dt EXISTING TREES TO BE REMOVED
i
�j F. SILT FENCE
1
POST -DEVELOPMENT DRAINAGE PLAN
DESIGNED BY: PROJECT No DRAWING:
R, I . B . SITE\ \POSTAN MARTIN DEV P ABEGONIA
DRAWN BY: J.
u FIELD BOOK No; PAGE(S)
y R.J.B. _
SCALE: C 1
9i 9
PROFE$_SkONAL ENGINEER:
1_10
RONALD J, BONGIOVANNI DATE:
REVISION BY FLA. AUTHE X514355 4/27/2015