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Stormwater Management Plan 12_05_26
Original PDF page 22, section 1. The text section number identifies this passage in the reader.
GENERAL:
1. TO BE READ IN CONJUNCTION WITH 'SEDIMENT CONTROL DEVICES', REFER STD DRG IPWEA DS-040 &
DS-041.
2. TEMPORARY DRAINAGE CONTROL FLOW SHOULD BE DIVERTED AROUND THE WORK SITE WHERE FORMED TOP WIDTH
POSSIBLE. GEOTEXTILE LINED OR EQUIVALENT
FORMED TOP WIDTH GEOTEXTILE
3. ALL DRAINAGE, EROSION AND SEDIMENT CONTROLS TO BE INSTALLED AND BE OPERATIONAL BEFORE
0.15 (MIN)
RUNOFF LINED OR EQUIVALENT
COMMENCING UP-SLOPE EARTHWORKS. RUNOFF
0.15 (MIN)
4. CONTROL MEASURES TO BE INSPECTED AT LEAST WEEKLY AND AFTER SIGNIFICANT RUNOFF
PRODUCING STORMS.
5. IN AREAS WHERE RUNOFF TURBIDITY IS TO BE CONTROLLED, EXPOSED SURFACES TO BE EITHER 2 (min)
MULCHED, COVERED WITH EROSION CONTROL BLANKETS OR TURFED IF EARTHWORKS ARE
EXPECTED TO BE DELAYED FOR MORE THAN I4 DAYS. FILTER SOCKS OVERLAP 1
6. CONTROL MEASURES MAY BE REMOVED WHEN ON-SITE EROSION IS CONTROLLED AND 70% ONTO KERB 4.0m MIN
PERMANENT SOIL COVERAGE IS OBTAINED OVER ALL UPSTREAM DISTURBED LAND.
7. STRAW BALE SEDIMENT TRAPS ARE TO BE SECONDARY OPTION WHICH GENERALLY SHOULD NOT BE
SEDIMENT POND
USED IF OTHER OPTIONS ARE AVAILABLE.
3. ALL CAPTURED RUNOFF MUST BE TREATED TO <75NTU PRIOR TO DISCHARGE.
RUN-OFF NON-DISPERSIVE SUBSOIL
4. SITE TO BE PROGRESSIVELY STABILISED, AIMING FOR 60% STABILISATION WITHIN 20 DAYS FROM
NON-DISPERSIVE SUBSOIL
START OF WORKS AND 70% OR GREATER WITHIN 2 MONTHS.
5. ALL INLET PITS TO BE PROTECTED IMMEDIATELY. 1m MAX ON (c) PARABOLIC CATCH DRAIN WITHOUT BANK
BYPASS FLOW PUBLIC ROADS (a) PARABOLIC CATCH DRAIN WITH DOWN-SLOPE BANK
6. EROSION AND SEDIMENT CONTROL MEASURES TO BE PROGRESSIVELY REMOVED AS SITE
STABILISATION IS ACHIEVED.
(a) ON-GRADE KERB INLET SEDIMENT TRAP FORMED TOP WIDTH GEOTEXTILE
CONSTRUCTED DIMENSIONS OF PARABOLIC CATCH DRAINS
SEDIMENT CONTROL: FILTER SOCKS MAY NEED TO LINED OR EQUIVALENT
1. ALL SEDIMENT & EROSION CONTROL MEASURES TO BE IN ACCORDANCE WITH INTERNATIONAL FULLY SURROUND THE INLET TO DRAIN TYPE FORMED TOP WIDTH WITH OR WITHOUT
0.15 (MIN)
EROSION CONTROL ASSOCIATION (IECA) AUSTRALIA GUIDELINES AND THE SPECIFICATIONS. THE INTERCEPT SEDIMENT RUNOFF RUNOFF BANK FORMED DEPTH WITH OR WITHOUT BANK
PVC PIPE SPACERS
BASIC PRINCIPLES ARE TO: FROM THE ROAD AND VERGE TYPE - A 1.6m 0.3m
· MINIMISE THE AREA OF DISTURBANCE;
· CONTROL DRAINAGE PATHS UPSTREAM OF SITE AND AT OUTLETS FROM SITE; 2 (MIN) TYPE - B 2.4m 0.45m
· MINIMISE EROSION; 1 TYPE - C 3.6m 0.65m
· MINIMISE SEDIMENTATION;
· PROGRESSIVELY REVEGETATE AND REHABILITATE THE SITE FILTER SOCK
2. SEDIMENT & EROSION CONTROL DETAILS SHOWN ARE MINIMUM REQUIREMENTS. IT IS THE CONSTRUCTED DIMENSIONS OF TRIANGULAR V-DRAINS
SIDE INLET REMAINS OPEN
CONTRACTOR'S RESPONSIBILITY TO INSTALL ADDITIONAL CONTROL MEASURES AS DEEMED GULLY GRATE WRAPPED IN NON-WOVEN FILTER DRAIN TYPE FORMED TOP WIDTH WITH OR WITHOUT
NECESSARY THROUGHOUT CONSTRUCTION. FABRIC (MINIMUM, BIDIM A34 OR EQUIVALENT) BANK FORMED DEPTH WITH OR WITHOUT BANK
3. THE CONTRACTOR IS RESPONSIBLE TO MAINTAIN ALL SEDIMENT CONTROL DEVICES IN A FUNCTIONAL
NON-DISPERSIVE SUBSOIL
TYPE - AV 2.0m 0.3m
ORDER AND REPLACE ALL BLOCKED SEDIMENT DEVICES AS REQUIRED UNTIL SUCCESSFUL OFF (b) SAG INLET SEDIMENT TRAP
MAINTENANCE OF WORKS.
TYPE - BV 2.7m 0.45m
4. CONSTRUCTION OF ALL SEDIMENT MANAGEMENT DEVICES TO THE SATISFACTION OF THE
SUPERINTENDENT. SHALL BE COMPLETED AND EFFECTIVE PRIOR TO:
KERB INLET PROTECTION (b) TRIANGULAR V-DRAIN WITH DOWN-SLOPE BANK
TYPE - CV 3.9m 0.65m
a. STRIPPING OF TOPSOIL AND GRASS.
SCALE N.T.S. LINED CATCH DRAIN
SCALE N.T.S.
b. BULK EARTHWORKS TO THE SITE.
c. SERVICES INSTALLATION.
d. PAVEMENT CONSTRUCTION.
6. ALL SEDIMENT MANAGEMENT MEASURES ARE TO REMAIN IN PLACE UNTIL INSTRUCTION IS RECEIVED
IN WRITING FROM THE SUPERINTENDENT TO REMOVE ALL OR PART OF THE SILT CONTROL SEDIMENT COLLECTION PIT EXCAVATED AROUND INLET
APPLICATIONS.
2m (MIN)
7. BOTH TEMPORARY AND PERMANENT SEDIMENT MANAGEMENT/EROSION CONTROL DEVICES SHALL BE FLOW CONTROL BERM INCORPORATED INTO THE
MINIM ROCK PAD IF THE PAD RECEIVES RUNOFF FROM
MAINTAINED AT A SUITABLE LEVEL/CONDITION THROUGHOUT CONSTRUCTION TO THE SATISFACTION UM LE
NGTH
OF THE SUPERINTENDENT. SEDIMENT FENCES ARE TO BE CLEANED OUT WHEN CAPACITY IS REDUCED 10m (M THE BUILDING SITE (LOCATION MAY VARY)
IN)
BY 30%.
40-75mm CRUSHED ROCK 300mm (MIN)
8. THE BULK EARTHWORKS AND SEDIMENT CONTROL LAYOUT PLAN SHALL BE READ IN CONJUNCTION BUILDING LAND
10m (MIN)
WITH THE APPROVED DRAWINGS. SITE SLOPE
150-200mm N
9. PRIOR TO COMMENCEMENT OF CONSTRUCTION APPROVAL IS TO BE OBTAINED FROM THE MI KERB
m
SUPERINTENDENT FOR THE LOCATION OF THE SITE ACCESS POINT AND WASH DOWN AREA WHICH 2.0
ARE TO BE MAINTAINED THROUGHOUT THE CONSTRUCTION PERIOD. Y
UP-SLOPE RUNOFF BD FOOTPATH
10. IF EROSION AND SEDIMENT CONTROL DEVICES HAVE BEEN FOUND TO BE DIFFERENT OR FAILED IN DIRECTED TO AN RP
MAKE SAFE FOR
SERVICE, CORRECTIVE ACTION IS TO BE UNDERTAKEN IMMEDIATELY WHICH MAY INCLUDE APPROPRIATE ROADWAY FOOTPATH
MAK PEDESTRIAN TRAFFIC
AMENDMENTS' ADDITIONS TO THE ORIGINAL APPROVED EROSION CONTROL PLANS. SUCH SEDIMENT TRAP PEDE E SAFE TO
STRIA
AMENDMENTS ARE TO BE APPROVED BY SUPERINTENDENT, IF DEEMED NECESSARY AND RELEVANT. N TRA
GEOTEXTILE FILTER CLOTH (MANDATORY FFIC
11. SEDIMENT TRAP TO BE FLOCCULATED AND DE-SILTED AS NECESSARY. WHEN WORKING ON CLAYEY SOILS) ROADWAY
12. WATER QUALITY TESTING / MONITORING TO BE UNDERTAKEN BY CONTRACTOR.
(a) FABRIC WRAP DROP INLET PROTECTION WITH TRENCH
SEDIMENT FENCE: (a) ROCK ENTRY/EXIT PAD FOR BUILDING SITES
(b) ROCK PAD SLOPING AWAY FROM ROAD
CONSTRUCTION NOTES:
1. NOT TO BE LOCATED IN AREAS OF CONCENTRATED FLOW.
MATERIALS
2. NORMALLY LOCATED ALONG THE CONTOUR WITH A MAXIMUM CATCHMENT AREA 0.6Ha PER 100m 2m (MIN)
GRATE WRAPPED IN NON-WOVEN FILTER 1. ROCK: WELL GRADED, HARD, ANGULAR, EROSION RESISTANT ROCK, NOMINAL DIAMETER OF 40 TO 75mm.
LENGTH OF FENCE
CLOTH (WOVEN SEDIMENT FENCE ONLY 2. FOOTPATH STABILISING AGGREGATE: 25 TO 50mm GRAVEL OR AGGREGATE (IF REQUIRED).
3. WOVEN FABRICS ARE PREFERRED, NON-WOVEN FABRICS MAY BE USED ON SMALL WORK SITES, I.E. SEDIMENT COLLECTION PIT
USED IN HEAVY TRAFFIC AREAS) BUILDING
OPERATIONAL PERIOD LESS THAN 6 MONTHS OR ON SITES WHERE SIGNIFICANT SEDIMENT RUNOFF IS EXCAVATED AROUND INLET 3. GEOTEXTILE FABRIC: HEAVY-DUTY, NEEDLE-PUNCHED, NON-WOVEN FILTER CLOTH (‘BIDIM’ A24 OR EQUIVALENT).
NOT EXPECTED SITE
INSTALLATION
LAND
4. WHERE FENCES NEED TO BE LOCATED ACROSS THE CONTOUR THE LAYOUT SHALL CONFORM TO 4. INSPECT ALL SITE ENTRY AND EXIT POINTS PRIOR TO FORECAST RAIN, DAILY DURING EXTENDED PERIODS OF RAINFALL, AFTER SLOPE
10m (MIN)
'TYPICAL LAYOUT' ACROSS GRADE. RUNOFF-PRODUCING RAINFALL, OR OTHERWISE AT FORTNIGHTLY INTERVALS.
5. FENCES ARE REQUIRED 2m MIN. FROM TOE OF CUT OR FILL BATTERS, WHERE NOT PRACTICAL ONE 5. IF SAND, SOIL, SEDIMENT OR MUD IS TRACKED OR WASHED ONTO THE ADJACENT SEALED ROADWAY, THEN SUCH MUST BE PHYSICALLY
FENCE CAN BE AT THE TOE WITH A SECOND FENCE 1m MIN AWAY. FENCE SHOULD NOT BE LOCATED SEDIMENT FENCE
REMOVED, FIRST USING A SQUARE-EDGED SHOVEL, AND THEN A STIFF-BRISTLED BROOM, AND THEN BY A MECHANICAL VACUUM UNIT, IF
PARALLEL WITH TOE IF CONCENTRATION OF FLOW WILL OCCUR BEHIND THE FENCE
STORMWATER INLET AVAILABLE.
MAKE SAFE FOR
TEMPORARY CONSTRUCTION ENTRY / EXIT: GRATE 6. IF NECESSARY FOR SAFETY REASONS, THE ROADWAY SHALL ONLY BE WASHED CLEAN AFTER ALL REASONABLE EFFORTS HAVE BEEN FOOTPATH
PEDESTRIAN TRAFFIC
1. ADJACENT STORMWATER RUNOFF TO BE DIVERTED AWAY FROM ENTRY/EXIT. TAKEN TO SHOVEL AND SWEEP THE MATERIAL FROM THE ROADWAY.
2. WHEEL-WASH OR SPRAY UNIT MAY BE REQUIRED DURING WET WEATHER. 7. WHEN THE VOIDS BETWEEN THE ROCK BECOMES FILLED WITH MATERIAL AND THE EFFECTIVENESS OF THE ROCK PAD IS REDUCED TO A
POINT WHERE SEDIMENT IS BEING TRACKED OFF THE SITE, A NEW 100mm LAYER OF ROCK MUST BE ADDED AND/OR THE ROCK PAD MUST ROADWAY
STANDARD SPECIFICATIONS:
BE EXTENDED.
DRAWING TO BE READ IN CONJUNCTION WITH INTERNATIONAL EROSION CONTROL ASSOCIATION (IECA) 8. ENSURE ANY ASSOCIATED DRAINAGE CONTROL MEASURES (e.g. FLOW CONTROL BERM) ARE MAINTAINED IN ACCORDANCE WITH THEIR
AUSTRALASIA BEST PRACTICES STANDARD DRAWINGS & SPECIFICATIONS. IECA STANDARD DRAWINGS (b) TYPICAL DETAILS OF EXCAVATED SEDIMENT COLLECTION TRENCH
Filename: C:\PROJECTS\240444 - SOCIAL HOUSING - 62 LAKE MACDONALD DRIVE, COOROY\3.0 CAD\DRAWINGS\OPW\240444-OPW-C-231.DWG
GENERALLY AS LISTED BELOW BUT NOT LIMITED TO:
DESIRED OPERATIONAL CONDITION. (c) ROCK PAD SLOPING TOWARD THE ROAD
9. DISPOSE OF SEDIMENT AND DEBRIS IN A MANNER THAT WILL NOT CREATE AN EROSION OR POLLUTION HAZARD.
EXIT-01 - CONSTRUCTION EXIT - ROCK PAD
EXIT-02 - CONSTRUCTION EXIT - ROCK PAD
OPTIONAL GEOTEXTILE SPLASH PAD PLACED
BELOW DAM TO REDUCE EROSION AT THE BASE
FIELD INLET PROTECTION
EXIT-03 - ROCK PADS FOR BUILDING SITES
1 OF THE CHECK DAM (GENERALLY NOT REQUIRED) SCALE N.T.S. ROCK PADS FOR BUILDING SITES
CD-01 - CATCH DRAINS SCALE N.T.S.
CD-02 - CATCH DRAINS - EARTH LINED
RCD-01 - CHECK DAMS STABILISE STOCKPILE SURFACE
FF-01 - FILTER FENCE 1
SF-01 - SEDIMENT FENCE
SF-02 - SEDIMENT FENCE
Last Plotted: 2026-04-24 9:22 AM
ESC-02 - GRATED STORMWATER (FIELD) INLET SEDIMENT TRAP 150mm (MIN)
EARTH BANK FOR UPSTREAM
1.5 MAX
ESC-03 - KERB INLET SEDIMENT TRAPS A A
OUTER WING POINTS A TO BE AT APPROACH FLOWS SEDIMENT
B
R-01 - RENEGOTIATION - GENERAL LEAST 150mm ABOVE CREST B 1 FENCE
1
FLOW DIRECTION 2
GROUND LEVEL 2
SECTION 1-1
Last saved by: KEVINTORRES(2026-03-11)
FIGURE 1 - LAYOUT PROFILE OF CHECK DAMS
(ROCK CHECK DAMS SHOWN)
ROCK CHECK DAMS TYPICAL STOCKPILE DETAIL
SCALE N.T.S.
SCALE N.T.S.
North Point Scale Horiz. Datum Client Consultant Project Drawing
LOCAL Drawn JH Project No. Drawing No. Rev No.
COAST2BAY SOCIAL HOUSING EROSION & SEDIMENT CONTROL
Design JH
HOUSING GROUP OPERATIONAL WORKS - CIVIL NOTES & STANDARD DETAILS
C MINOR UPDATE TO SET 24.04.26 LS
Vert. Datum
AHD
62 LAKE MCDONALD DRIVE, Check LS
240444 OPW-C-231 C
B FOR TENDER 16.04.26 LS RL Datum CIVIL | STRUCTURAL | GEOTECHNICAL COOROY, QLD, 4563 Approved Approved Date Signed Sheet
A FOR APPROVAL
Rev Revision Description
09.04.26 LS
Date Approved
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or copied in any form without the prior consent
SUNSHINE COAST | BRISBANE | GOLD COAST
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LACHLAN SWANN
RPEQ 21223
16.04.26 Status FOR TENDER
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