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S Comp. By: D. Martin
1 Date: 4/14/2023
Public Works Department
City of Atlantic Beach
Permit No: RES21-0345
Address: 163 Belvedere
Rer::uired Storacie Volume
Criteria:
Section 24-68 of the City of Atlantic Beach's Zoning, Subdivsion, and Land Development Regulations requires
that stormwater runoff from impervious areas be stored onsite. Volume to be retained is as follows:
V = CAR/12 which is the Modified Rational Method for estimating stormwater runoff
Where: V = Volume of Runoff to be stored (cubic feet)
C = Runoff Coefficient, 0.92, the difference between impervious area (C=1.0)_
and undeveloped conditions (C=0.08). `� ®ik�
A = Impervious Area (square feet) 1I1�'j �`
R= 25 -yr / 24 -hr rainfall depth (9.3 inches for Atlantilkg3"R
Onsite Storage Volume Re uired for Impervious Area: { p'pp�OVED E p'`•
pE
Lot Area = 10,000 ft2 { } DE 1C AB
Impervious Area (A) = 2,096 fe = 21.0%
V = 0.92 x 2,096.0 x 9.3 / 12
V = ft3
Provided Storage:
Area 1 - Relative Elev. Area Storage Sideslope: 2 :1
(ft)
(ft3)
7.6 134 292 BOTTOM size: X -4
8.f 450 TOB size: X 0
Area 2 - Relative Elev. Area Storage
(ft) (f) (ft3)
7.8 63 BOTTOM size: X -4
8.F 326 TOB size: X 0
Area 3 - Relative Elev. Area Storage
(ft) _ (ft) (ft)
�0 BOTTOM size: X
TOB size: X
Inground Storage: = Mdlpf
Total Storage Area at TOB (A) = 776.'' ftz
Depth to ESHWT from BOTTOM (d) = 3.: ft, default is 2.0 ft, verify onsite ESHWT
Pore Factor (pf) = 0.4 default is 0.4
Inground Storage Provided = 1018.1 ft3
Required Treatment Volume = 1,494 ft3
Supplied Treatment Volume = 1,505 ft3
Retention W.R. for sending RES21-0345 163 BELVEDERE 4/14/2023
314 12th Street
Fill in highlighted QTY
Insert SF QTY Below
Solid Structures
Impervious (SF)
Main Slab
1526
Driveway and Walk
375
Brick Drive Way NEW
0
Misc Conc.
40
REAR PAVER NEW
0
Covered Porch (Attached)
185
Pool Coping
0
Enter Pool Area Total --->
0
IDES
50%
Pool Area Caculation at 50%
0
1 E
PROPDSE0 +Dr
RETENTION AREA 2
NEW ADDITION
Z o
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DEMO
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90
WPM
/ 0C
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4 10
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Total New Impervious
2121
(NEED WATER RETENTION)
YES
Total
2126
1
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LOTS 593 i 591, SECTION N0. 1 SALTAIR, ACCORDING TO
AS RECORDED IN PLAT BOOK Iq ION 17PACE B, OT THC CURRE
Of OUVAL COUNTY, rLOMDA. IN SECT. TONNS
RANGE 29 EAST. OF SAID COUNTY.
HEREON BASED ON STAE PULE GOERDH1TES (10/2011) M
E STREET BEING NORM 2Z"" EAST.
N NEREOI BASED ON NORTH AYBOGN Y1RnfAL DATEM OF 19
NNAAN ff/1O A SET NAl AND dgN STAYPID'GN TRAV... M9 1,
+PEAl15 ro l[ N ft000 DONE Y MINIM 15 AN AREA DETOCN °
Nl ACC011DwC ro Dowr,ANNn PANEL 12DD75-DWF4 OF nE
DUVAL CDLFM, FL DATED NDVLTWN R PON AS PIE
PEIIFOMm MNAIUf 11E EEJEFII Q A TITLE OOMBE30. 1,
OROm w 11E OIMENI PONUC olm fi it" In". F
D LONOEAF PIES ARE NR Ara Tool
20NED AC9oENRAL 51141 �R+ tun wn N t[
EJ IrNEIONI LOT OEPIIl 1 lrwdaa wl�xeo.amn=ixn Tql
NANWM BUILDING HMO w aP,wrw. uoi
8:31 AM4/14/2023 Permit #POOL23-0001 Takeoff by:Derek Martin
Sign 1.
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yN TARY
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UNITY PO
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LOTS 593 i 591, SECTION N0. 1 SALTAIR, ACCORDING TO
AS RECORDED IN PLAT BOOK Iq ION 17PACE B, OT THC CURRE
Of OUVAL COUNTY, rLOMDA. IN SECT. TONNS
RANGE 29 EAST. OF SAID COUNTY.
HEREON BASED ON STAE PULE GOERDH1TES (10/2011) M
E STREET BEING NORM 2Z"" EAST.
N NEREOI BASED ON NORTH AYBOGN Y1RnfAL DATEM OF 19
NNAAN ff/1O A SET NAl AND dgN STAYPID'GN TRAV... M9 1,
+PEAl15 ro l[ N ft000 DONE Y MINIM 15 AN AREA DETOCN °
Nl ACC011DwC ro Dowr,ANNn PANEL 12DD75-DWF4 OF nE
DUVAL CDLFM, FL DATED NDVLTWN R PON AS PIE
PEIIFOMm MNAIUf 11E EEJEFII Q A TITLE OOMBE30. 1,
OROm w 11E OIMENI PONUC olm fi it" In". F
D LONOEAF PIES ARE NR Ara Tool
20NED AC9oENRAL 51141 �R+ tun wn N t[
EJ IrNEIONI LOT OEPIIl 1 lrwdaa wl�xeo.amn=ixn Tql
NANWM BUILDING HMO w aP,wrw. uoi
8:31 AM4/14/2023 Permit #POOL23-0001 Takeoff by:Derek Martin
gaiconsultants.com I transforming ideas Into reality,
Permit No:
Address: 163 Belvedere Street
Renuired Storage Volume
Criteria:
Section 24-66 of the City of Atlantic Beach's Zoning, Subdivision, and Land Development
Regulations requires that stormwater runoff from impervious areas be stored onsite. Volume to
be retained is as follows:
V = CAR/12 which is the Modified Rational Method of estimating stormwater runoff
Where: V = Volume of Runoff to be stored (cubic feet)
C = Runoff Coefficient, 0.92, the difference between impervious area
(C=1.0) and undeveloped conditions (C=0.08).
A = Impervious Area (square feet)
R = 25 -yr / 24 -yr rainfall depth (9.3 inches for Atlantic Beach)
Onsite Storage Volume Required for Impervious Area:
Lot Area = 10,000 f t2
Proposed Impervious Area = - -"" f t2 = 21.0%
V= 0.92 x
V = 1494 f t3
Provided Storage:
Area 1-
Area
Storage
Relative
(f t2)
(f t3)
Elev. (ft)
63
BOT
7.6
134
326
195 TOB
8.8
297
8.6
450
x 9.3 /
Required
Sideslope
BOT
TOB
Area 2 -
Area
Storage
Relative
(f t2)
(f t3)
Elev. (ft)
63
BOT
7.8
326
195 TOB
8.8
1
Sideslope:
PUBLIC VVoRKS
A99ROVED
12[ } DENIED O DEpT,
t } I.ICl� Lt�
4:1 Around
1 Around
gaiconsultants.com I transforming Ideas Into reality,
VE
Inground Storage = A*d*pf
Total Storage Area at TOB (A) = 776.0 f tZ
Depth to ESHWT from BOTTOM (d) = 3.28
Pore Factor (pf) = 0.4 default is 0.4
Inground Storage Provided = 1018.1 ft3
Total Pond Storage = 492.0 ft3
Required Treatment Volume = 1494 ft3
Supplied Treatment Volume= 1510 fC
ft, taken from ground water level of PIEZOMETER
2
PUBLIC WORKS
NJ APPROVED
i nGNIED