Attachment 7 - Civil Drawings_LR

 SEDIMENT BASIN DESIGN CALCS
  SIZED IN ACCORDANCE WITH IECA'S 'BEST PRACTICE EROSION AND SEDIMENT CONTROL'
                                    GUIDELINES.

 Basin Type =              D

                                                                  Based on IECA recommendations
                                                                  Appendix B
                                                                  75% to 85% depending on soil
 Y% =                    75.000 %                                 type TABLE B28

 A=                        0.610 ha                               Catchment
                                                                  Volumetric runoff coefficient
 Cv =                      0.600                                  Table B31

 I(1yr 5-day) =            1.270 mm/hr                            TABLE B29
                                                                  Y% 5-day rainfall depth (mm)
 R(y% 5-day) =           26.300 mm/hr                             TABLEB29

 Vs = 10.R(y%
 5-day).Cv.A             96.195 m3                                Settling Volume

 V = Vs*0.5              48.097 m3                                Storage Volume

 Total Basin
 Volume                 144.292 m3                                Total Volume
                                                                                                                                                                                                                                                                                                REQUIRED TOTAL STORAGE VOLUME = 144m³
                                                                                                                                                                                                                                                                                                PROVIDED TOTAL STORAGE VOLUME = 163m³
 BASIN DESIGN TO                                                                                                                                                                                                         PROVIDE TEMPORARY 1.8m HIGH
 SUIT MINIMUM                                                                                                                                                                                                              FENCING AROUND EXTENT OF
 REQUIREMENT                                                                                                                                                                                                                          SEDIMENT BASIN
                                                                                                                                                                                                                                                                                     700mm MIN DEPTH
                                                                                                                                                                                                                                                                                     REQUIRED SETTLING STORAGE 48m³ MIN                                               TOP OFF WALL
                                                                                                                                                                                                                                                                                     PROVIDED SETTLING STORAGE 65m³                                                   RL6.85
                                                                                                                                                                                                                                         DESIGN SURFACE              RL6.55                                                  WATER LEVEL RL6.55
 BASIN TOTAL
 DEPTH                     1.300 m                                                                                                                                                                                                                                                                                                                                          PROPOSED RETAINING WALL 'RW2'
                                                                                                                                                                                                                                                                                                                                                                            REFER DETAIL EW04
                                                                                                                                                                                                                                                                                     1
 SETTLING ZONE
                                                                                                                                                                                                                                                                                      2.5 max                                                    RL 5.25
 DEPTH                     0.700 m
                                                                                                                                                                                                                                                                       BIDIM A14 GEOFABRIC
 STORAGE DEPTH             0.600 m                                                                                                                                                                                                                                      PINNED TO BATTERS
                                                                                                                                                                                                                                                                                                 600mm MIN DEPTH
 BASIN BATTER                                                                                                                                                                                                                                                                                    REQUIRED SEDIMENT STORAGE 96m³ MIN
 SLOPE (1IN                                                                                                                                                                                                                                                                                      PROVIDED SEDIMENT STORAGE 98m³
                           2.500 m


                                                                                                                                                                                                                                                                          SEDIMENT BASIN 1 TYPICAL SECTION
 SETTLING VOL            98.000 m3


 STORAGE VOL             65.000 m3


 TOTAL STORAGE          163.000 m3


 STANDARD DRAWINGS
 BEST PRACTICE EROSION AND SEDIMENT CONTROL BOOK 6 - STANDARD
 DRAWINGS IS TO BE REFERRED TO DURING CONSTRUCTION.


 WATER QUALITY OBJECTIVES
 DISSOLVED OXYGEN (%)               80-100%
 pH                                 6.5 TO 8.0
 SUSPENDED SOLIDS (mg/L)            <50
 TURBIDITY (NTU)                    <50




NOTE: ONLY DRAWINGS MARKED "FOR CONSTRUCTION" AND BEARING AN ORIGINAL SIGNATURE SHALL BE USED FOR CONSTRUCTION Design:
                                                                                                               PURPOSES.
                                                                                                                       PBL                                                                                                                                                PROJECT:                                                                                            DRAWING TITLE:
                                                                                                                                                                                                                                        Brah 101 pty ltd t/a Alta Projects
                                                                                                               Drawn: PBL                                                                                                                                                                                                                                                     SEDIMENT BASIN DETAILS
                                                                              PRELIMINARY                       Date: MAY 2024
                                                                                                                                                                                                                                        A.B.N. 91 611 354 511
                                                                                                                                                                                                                                        26 Memorial Avenue, Cotton Tree   PROPOSED KINETIC BUS DEPOT DEVELOPMENT
                                                                                    NOT FOR CONSTRUCTION                                                                                                                                PO Box 559, Cotton Tree, QLD, 4558                                                                                                                                      Revision    Sheet
                                                                                                            Checked:. . . . . . . . . . .
                                                                                                                                                                                                                                                                          at 5 PRODUCTION STREET, NOOSAVILLE
                                                                                                                                                                                                                                        Tel (07) 5475 4125 Fax (07) 5479 1607                                                                                                 DRAWING No:
                                                                                                                                                                                                                                                                                                                                                                                               A6880/24/ESC03              3 of 3
                                                                                                                                                                                                                                        Email: [email protected]
                                                                               .......................
                                                                                   DIRECTOR APPROVAL             Datum AHD
                                                                                                                                                                                                                                        Web: http://www.alta.net.au       for INTEGRAL CONSTRUCTION
 REV    DATE                     DESCRIPTION                     BY    CHKD        RPEQ - 4784                    A1 SHEET SIZE             FILENAME : A6880-24-ESC03 - SEDIMENT BASIN DETAILS.dwg - DATE : 3/6/24 - 3:42pm - XREF's:                                                                                          Council Ref: .......................