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Attachment 6 - Stormwater Management Plan
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Log in to see the plans as drawn HIGH - EFFICIENCY SEDIMENT BASIN BIO-RETENTION BASIN
1. ALLOW APPROXIMATELY 5-6% OF CATCHMENT AREA DEPENDING ON DEPTH 1. ALLOW APPROXIMATELY 2-3.5% OF CATCHMENT AREA INCLUDING FOREBAY
2. BASINS REQUIRE APPROXIMATELY 2m OF FALL FROM INLET TO OUTLET TO ACT AS A TYPE A BASIN - SELF DRAINING 2. CAN BE USED FOR GREEN WASTE AREA
3. IF NO OUTLET CAN BE ACHIEVED, A FULL BASIN COULD BE ADOPTED (TYPE B BASIN), HOWEVER WOULD NEED TO NEGOTIATE WITH DES 3. COULD BE ADOPTED FOR ENTIRE RRC IF PAD IS SEALED AND SEDIMENT IS NOT THE KEY CONTAMINANT OF CONCERN
FOREBAY LENGTH MAIN CELL LENGTH
DECANT SKIMMER
LEVEL SPREADER
MAXIMUM FROM TOP OF
DRAIN INVERT MIN. CREST MIN. 0.2m
WATER WATER COLUMN
0.2m ABOVE LEVEL ABOVE SPILLWAY SPILLWAY CREST
CREST LEVEL
SPREADER 0.3m (MIN)
HIGH FLOW
FLOC SETTLING DEPTH (DF) (OVER
SETTLING ZONE DEPTH (DS) SPILLWAY)
FREE WATER ZONE (DFF) DEPTH (DT)
SEDIMENT STORAGE DEPTH (DSS)
DECANT
STRUCTURE LOW FLOW
OUTLET
TYPE A SEDIMENT BASIN TYPICAL SECTION (nts)
AUTOMATED
DOSING SYSTEM LEVEL SPREADER
TO BE FULL WIDTH
OF BASIN
SPILLWAY AND
CHUTE TO BE
LINED AS
SPECIFIED
FOREBAY WIDTH
MAIN CELL WIDTH
INLET DRAIN
(OR PIPE) FOREBAY LENGTH MAIN CELL LENGTH
FLOW DIRECTION
FLOATING WETLAND
DECANT SKIMMER
ARMS ON TOP OF
1. COULD BE IMPLEMENTED IN HES BASIN TO MANAGE NUTRIENT LOADS FROM GREEN WASTE AREA (NO NEED TO
WATER COLUMN DECANT LOW FLOW SEPARATE AREA FOR BIO BASIN)
STRUCTURE OUTLET
2. CURRENTLY BEING TRIALLED AT CALOUNDRA LANDFILL
TYPE A SEDIMENT BASIN PLAN VIEW (nts)
FOREBAY LENGTH MAIN CELL LENGTH
LEVEL SPREADER
CREST MIN. 0.2m MAXIMUM
DRAIN INVERT MIN. WATER
0.2m ABOVE LEVEL ABOVE SPILLWAY
CREST LEVEL
SPREADER 0.3m (MIN) SPILLWAY CREST
FLOC SETTLING DEPTH (DF)
SETTLING ZONE DEPTH (DS)
DEPTH (DT)
SEDIMENT STORAGE DEPTH (DSS)
TYPE B SEDIMENT BASIN TYPICAL SECTION (nts)
AUTOMATED
DOSING SYSTEM LEVEL SPREADER
TO BE FULL WIDTH
OF BASIN
SPILLWAY AND
CHUTE TO BE LINED
AS SPECIFIED
FOREBAY WIDTH
MAIN CELL WIDTH
INLET DRAIN (OR
PIPE)
FOREBAY LENGTH MAIN CELL LENGTH
FLOW DIRECTION
TYPE B SEDIMENT BASIN PLAN VIEW (nts)
CLIENT PROJECT
D CELL NUMBER REVISION KR 20/09/21
COPYRIGHT C NOOSA SHIRE COUNCIL NOOSA LANDFILL STORMWATER MANAGEMENT PLAN
C FINAL DESIGN REPORT KR 03/06/21 TOPO GROUP PTY LTD
DRAWN DESIGNED DATE DRAWING TITLE
B NEW ATC DESIGN KR 12/04/21 THIS DOCUMENT MAY NOT BE COPIED OR KR KR 31/03/21 STORMWATER MANAGEMENT - NORTH
ISSUED FOR USE TRANSMITTED IN ANY FORM OR BY ANY
E REVISION TO NORTH OPTIONS KR 10/12/21 MEANS IN PART OR IN WHOLE WITHOUT
RPEQ / SIGNATURE (IF REQUIRED) PAD OPTIONS - ADDITIONAL INFORMATION
NORTH
A3 THE WRITTEN CONSENT OF TOPO GROUP CPESC - 5395, RPEQ - 15954 PROJECT No DRAWING No REVISION
REVISION DESCRIPTION APPROVED BY DATE PTY LTD. 20-0211 CONCEPT-13 E
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