HomeMy WebLinkAboutSW8060116_COMPLIANCE_20060106STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW90119OI�&
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
FCOMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD
I
INFILTRATION BASIN ANALYSIS
PROJECT NUMBER 060116
PROJECT NAME
Venetian Bay
DRAINAGE BASIN
Lumber
RECEIVING STREAM
UT ICWW
Index No
15-25
SITE AREA 34 84 acres
IMPERVIOUS AREA CALCULATION
BUILDINGS
Streets/Parking
Sidewalks
Future
TOTAL
% IMPERVIOUS, 1= I
ELEVATION OF SEASONAL HIGH WATER TABLE
REPORTED INFILTRATION RATE
SURFACE AREAS AND ELEVATIONS
FILENAME S 1WQS11NBASIN1060116 WK1
DATE 20-Jan-06
REVIEWER P Bartlett
CLASS SA, HQW
If ORW, is site within the 575' AEC?
DRAINAGE AREA 801a,87 SF /
Rational C
220,208 095
283,640 095
29,621 095
3,000 095
�364$9 0 7b
Place a "1" here if Rational
RV= 05+ 009 (1) = 0 65
1Z 5 FEET MSL
20,$ INCHES/HOUR
or 0000481 FPS
Elev (ft) Area, sq ft Inc Volume Acc Volume
BOTTOM 145 18,159
145 18,159 0 0
145 18,159 0 0
TOP 18 24,037 73843 73843
VOLUME 1 DEPTH 1 DRAWDOWN CALCULATION
DESIGN STORM, INCHES
DESIGN VOLUME
TOTAL VOLUME AVAILABLE
DEPTH OF RUNOFF
TIME TO DRAWDOWN
25 YEAR 24 HOUR STORM NIA
Intensity, i = 33 inches 1 hour
Qr=CiA=
Qp through the bottom of the basin=
10 YEAR 10 MIN HIGH INTENSITY EVENT
Intensity, i = 6 3 inches 1 hour
Volume for 10 yr 10 min event =
15
AM: CUBIC FEET
73843, CUBIC FEET
350 FEET
28 HOURS MUST BE <120
4 26 CFS
8 74 CFS Must be > Qr
48814 30 CF < 73843 CIF
COMMENTS
Volume and drawdown are (not) within Design Requirements