15-001261-113

 

EROSION AND SEDIMENT CONTROL NOTES: SEDIMENT BASIN NOTES:

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  
 
 
 

1. THE CONTRACTOR IS TO TAKE ALL NECESSARY PRECAUTIONS TO CONTROL AND MINIMISE EROSION AND 1. SEDIMENT BASIN CONSTRUCTION AND MAINTENANCE TO BE IN ACCORDANCE WITH SOIL EROSION AND SEDIMENT PROVIDE SECURED
DOWNSTREAM SEDIMENTATION DURING ALL STAGES OF CONSTRUCTION INCLUDING THE MAINTENANCE PERIOD. CONTROL - ENGINEERING GUIDELINES FOR QLD CONSTRUCTION SITES - IEA QLD; AS PER NOOSA SHIRE COUNCIL GEOFABRIC TO INVERT

2. NOTWITHSTANDING THE DESIGN SHOWN ON THE DRAWINGS, THE CONTRACTOR IS RESPONSIBLE TO PSPOS CLAUSE 5.2. AND BATTERS
IMPLEMENT SEDIMENT CONTROL DEVICES USING BEST PRACTICES AS NECESSARY TO MINIMISE THE 2. FOR THE ENTIRE EMBANKMENT AREA STRIPPING OF VEGETATION AND ANY HIGHLY ORGANIC TOP SOILS AND
QUANTITY OF SEDIMENT LEAVING THE SITE. ANY SOFT CLAYS TO DEPTHS OF APPROXIMATELY 0.3m IS REQUIRED. —

3. SOME VARIATIONS TO THE SPECIFIED CONSTRUCTION SEQUENCE MAY BE NECESSARY IN CERTAIN AREAS TO 3. THE STRIPPED SURFACE IS TO BE INSPECTED AND TESTED BY A GEOTECHNICAL ENGINEER. —__
FACILITATE CONSTRUCTION. WHERE THIS IS THE CASE, ANY VARIATION MUST BE APPROVED BY THE 4. SUBJECT TO THE GEOTECHNICAL ENGINEER INSPECTION EXCAVATION OF A CUTOFF KEY ALONG THE <et
SUPERINTENDENT PRIOR TO IMPLEMENTATION EMBANKMENT CENTERLINE AT LEAST 0.5m - 1.0m INTO THE FOUNDATION MATERIALS SHALL BE REQUIRED.

4. AT ALL TIMES THE CONTRACTOR SHALL MONITOR THE PREVAILING WEATHER CONDITIONS AND PROTECT 5. THE CLAY FILLING FOR THE BASIN SHOULD BE PLACED IN HORIZONTAL LAYERS OF 200mm THICKNESS AND | BASE
ANY DOWNSTREAM CONSTRUCTION GULLY INLETS. COMPACTED TO A DENSITY RATIO WITHIN THE RANGE 98% - 102% STANDARD COMPACTION (AS 1289.5.1.1). WIDTH

5. CLEARING OF SITE AND STOCKPILE SITE TO BE DETERMINED ON SITE BY SUPERINTENDENT AND IS TO BE CLEAR OF PLACEMENT MOISTURE CONTENTS SHOULD BE WITHIN THE RANGE OMC - 1% TO OMC + 2% (WHERE OMC =
ANY WATER COURSE. OPTIMUM MOISTURE CONTENT FOR STANDARD COMPACTION).

6. WHERE POSSIBLE PROVIDE CUT-OFF DRAINS TO DIVERT CLEAN WATER FROM UNDISTURBED CATCHMENT. 8. WATER QUALITY SAMPLES MUST BE TAKEN AND ANALYSED PRIOR TO THE RELEASE OF ANY WATER FROM TYPICAL DIVERSION DRAIN DETAIL

7. ALL PERIMETER BANKS/SWALES SHALL HAVE UNINTERRUPTED POSITIVE GRADE TO AN OUTLET. THE SEDIMENT BASINS. WATER QUALITY MUST SATISFY THE FOLLOWING CRITERIA: TSS < 50mg/L, PH N.T.S.

8. CONSTRUCT WASH DOWN BAY OR SHAKE DOWN AT ENTRY/EXIT TO COUNCIL STANDARDS AND TO THE BETWEEN 6.5 AND 8.5 AT ALL TIMES. RESULTS ARE REQUIRED TO BE FORWARDED TO SUPERINTENDENT
SATISFACTION OF COUNCIL'S LICENSING AND COMPLIANCE OFFICER. WITHIN 48 HOURS OF SAMPLING. DRAIN TYPE | BASE WIDTH DEPTH MIN SLOPE

9. THE EXTENT OF GRASSING OR HYDROMULCHING BE DETERMINED BY THE ENGINEER AND SHALL BE SEEDED, 9. ALL WATER QUALITY SAMPLES DATA INCLUDING DATES OF RAINFALL, DATES OF TESTING AND WATER DI-A om 0.5m 0.5%
AS SPECIFIED, WITHIN SEVEN DAYS OF FINAL TRIMMING. RELEASE, MUST BE MAINTAINED IN AN ON-SITE REGISTER. THIS REGISTER IS TO BE MAINTAINED FOR THE Di-B im 0.5m Ua

10. THE CONTRACTOR SHALL BE RESPONSIBLE FOR COMPLYING WITH COUNCIL'S REQUIREMENTS IN RELATION TO DURATION OF THE APPROVED WORKS, AND BE AVAILABLE FOR INSPECTION BY COUNCIL OFFICERS ON REQUEST. oe Om 0.5m sa
GRASS STRIKE AND GRASS COVERAGE RATES AT THE ON AND OFF MAINTENANCE INSPECTIONS. 10. FLOCCULATION AGENT FOR TYPE ‘D’ BASIN SHALL BE GYPSUM DOSED AT ABOUT 32kg/100Cum. CONTRACTOR ae on nee 13%

11. ALL MATERIALS TRACKED OR SEDIMENT WASHED ONTO COUNCIL'S ROAD FROM THE DEVELOPMENT ARE TO TO HAVE SUPPLY OF FLOCCULATION AGENT AVAILABLE ON SITE. a Ton a 8%
BE BROOMED UP AND COLLECTED. 11. FLOCCULATION, TESTING AND DEWATERING IN A NON-EROSIVE MANNER SHALL BE COMPLETED WITHIN 5 DEB tn om a

12. ALL SEDIMENT CONTROL DEVICES SHALL BE MONITORED, CLEANED AND/OR REPAIRED WHENEVER THE BUSINESS DAYS FROM A RUN-OFF INCLUDING RAIN EVENT. ANY WATER DISCHARGED FROM THE SEDIMENT
CAPACITY OF THE EROSION AND SEDIMENT CONTROL MEASURE FALLS BELOW 75% BASIN AND RELEASED OFF-SITE MUST ACHIEVE THE WATER QUALITY CRITERIA PRIOR TO BEING RELEASED

13. ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE INSPECTED AT LEAST DAILY (WHEN WORK IS FROM THE SITE.

OCCURRING ON SITE) OR WEEKLY (WHEN WORK IS NOT OCCURRING ON SITE). WITHIN 24 HOURS OF 12. ALL REASONABLE AND PRACTICAL MEASURES SHALL BE TAKEN TO DIRECT STORMWATER TO SEDIMENT BASINS
EXPECTED RAIN AND WITHIN 18 HOURS OF A RAINFALL EVENT AS REQUIRED TO MAINTAIN CONTROL USING CONTOURED CATCH DRAINS.
DEVICES. 13. WHERE REQUIRED DURING ROAD CONSTRUCTION, SUITABLE GAPS IN THE KERB SHALL BE LEFT IN ORDER TO

1. ALL TEMPORARY EROSION AND SEDIMENT CONTROL (ESC) MEASURES ARE TO BE MAINTAINED AND FULLY ALLOW DIVERSION DRAINS AND THE PLACEMENT OF SAND BAGS ACROSS THE ROAD WIDTH TO DIVERT MIN LENG Ty BERM (0.3m
OPERATIONAL DURING THE MAINTENANCE PERIOD, AND ARE TO BE REMOVED AFTER THE SATISFACTORY SURFACE FLOWS TO TEMPORARY SEDIMENT BASINS. 15.0m MIN HIGH)
COMPLETION OF AN ‘OFF MAINTENANCE’ INSPECTION AND PRIOR TO FORMAL ACCEPTANCE BY COUNCIL. 14. BASINS INLETS SHALL BE PROTECTED FROM EROSION AND SCOUR BY IMPLEMENTING ROCK OR GEOTEXTILE

15. NO OBSTRUCTIONS SHALL BE PLACED ON COUNCIL'S PUBLIC ROADS OR GULLY PITS FOR SAFETY REASONS. LINED CHUTES.

15. A PRIMARY OUTLET/EMERGENCY SPILLWAY SHALL BE IMPLEMENTED ON EACH SEDIMENT BASIN TO

ACCOMMODATE A 20-YEAR ARI. GEOTEXTILE

SEDIMENT MANAGEMENT PROGRAM: 16. SEDIMENT BASINS EMERGENCY SPILLWAYS, SPILLWAY CHUTES AND OUTLET CHANNELS FROM THE SEDIMENT FABRIC vz

4. CLEARING BASINS SHALL BE ADEQUATELY STABILISED AGAINST EROSION/SCOUR AND REMAIN STRUCTURALLY STABLE

- INSTALL APPROPRIATE SAFETY FENCING AND SIGNAGE. UP TO AND INCLUDING THE A 20-YEAR ARI RAIN EVENT". RUNOFF FROM PAD DIRECTED

- SEDIMENT FENCE, SEDIMENT BASINS AND DIVERSION DRAINS TO BE CONSTRUCTED AS REQUIRED. 17. ALL BASINS TO BE SURROUNDED BY TEMPORARY SAFETY FENCING AND WARNING SIGNS SHALL BE ERECTED TO SEDIMENT TRAP GRAVEL
- EXISTING GRASSED AREAS TO REMAIN WHERE POSSIBLE. SURROUNDING THE BASIN AND STEEP, INTERNAL SLOPES SHALL BE AVOIDED.

SHAKE DOWN/WASH DOWN BAY AT NOMINATED ENTRY/EXIT POINT ON TRADING POST ROAD AS REQUIRED.
- CONSTRUCT UPSTREAM CLEAN WATER DIVERSION DRAINS

cur OF DRAW TEMPORARY CONSTRUCTION EXIT WASHDOWN DEVICE

   
   
 

 

 

  

 

 

 

 

     
 

 

   
 
  

- SUPERINTENDENT TO CONFIRM EXTENT OF CLEARING TO CONTRACTOR PRIOR TO COMMENCEMENT OF WORKS. REMOVE FABRIC BETWEEN Niles
- REFER ALSO TO VEGETATION MANAGEMENT PLAN. STEEL PICKET IN SAGS
2. EARTHWORKS
- SEDIMENT FENCES AND DIVERSION DRAINS TO BE CONSTRUCTED AS REQUIRED 5m? LOOSE PLACED
3. STOCKPILE ROCK NOMINAL 200mm
- SEDIMENT FENCE TO BE ERECTED Sm FROM TOE OF BATTER ON LOW SIDE OF STOCKPILE. —
- CUT OFF DRAIN ON HIGH SIDE TO DIRECT SURFACE RUNOFF AROUND STOCKPILE. |
4. MAINTENANCE PERIOD | TYPICAL
- ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE INSPECTED: SAND BAGS BOTH SIDES | SEDIMENT BASIN

- AT LEAST DAILY (WHEN WORK IS OCCURRING ON SITE) OR WEEKLY (WHEN WORK IS NOT OCCURRING ON SITE) MESH OR GEOFABRIC OF OVERFLOW PATH CUT OFF DRAIN (SIZE AS

- WITHIN 24 HOURS OF EXPECTED RAIN; AND ON GROUND TO EXTEND TO BACK OF NOMINATED) OVERFLOW WEIR

- WITHIN 18 HOURS OF A RAINFALL EVENT REDUCE EROSION PAVEMENT BOX ____ ds WIDTH AS SPECIFIED
- ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE MAINTAINED THE SAME DAY WHEN THE CAPACITY cao +
OF THE EROSION AND SEDIMENT CONTROL MEASURE FALLS BELOW 75%. SPILL THROUGH WEIR DETAIL ON LAYOUT PLANS | 4 TOP OF BANK
- ANY REPAIRS TO EROSION AND SEDIMENT CONTROL DEVICES ARE TO BE EFFECTED IMMEDIATELY. SEDIMENT INSTALL AT ALL SAG POINTS IN SILT FENCES E
AFTER RAIN IS TO BE CLEANED FROM STREETS AND ALLOTMENTS IMMEDIATELY AND CORRECTIVE ACTION TAKEN
TO AVOID A RE-OCCURRENCE OF THE FAILURE. /

SEDIMENT CONTROL FABRIC TO BE POSTS AT NOMINAL 26m TYPICAL SEDIMENT BASIN. EXTEND CONCRETE WEIR ROCK LINED BASE,
CONSTRUCTION SEQUENCE: ‘PROPEX’ OR SIMILAR APPROVED CTRS TO BE STEEL PICKET N.T.S. TO BATTER EXTENTS 300mm THICK.
A. CONSTRUCT ENTRY AND EXIT POINT TOGETHER WITH SHAKE DOWN DEVICE ON TRADING POST ROAD TOP EDGE TO BE SUITABLY OR 50 x 50 HARDWOOD SIZE’ Dss-= 200mm.
B. ERECT SEDIMENT FENCES ALONG DOWNSTREAM ADJACENT PROPERTY BOUNDARIES. PLACE BARRIER FENCES SUPPORTED BETWEEN POSTS SECTION (A
AROUND LOTS OR AREAS THAT DO NOT REQUIRE DISTURBANCE TO ENSURE AREAS REMAIN UNDISTURBED N.T.S.

   
  

 

C. CONSTRUCT CLEAN WATER DIVERSION SWALES ALONG TO ENSURE UPSTREAM RUNOFF IS DIVERTED AROUND
THE SITE. ALL DIVERSION SWALES ARE TO BE CONSTRUCTED PRIOR TO ANY EARTHWORKS OPERATIONS.

D. CLEARING, GRUBBING AND EARTHWORKS OF SEDIMENT BASIN AREAS ONLY

CONSTRUCT TEMPORARY SEDIMENT BASINS, WITH NON-DISPERSIVE MATERIAL, SPILLWAY, AND OTHER

ASSOCIATED WORKS

F. CONSTRUCT DIVERSION DRAINS DIRECTING DIRTY WATER INTO SEDIMENT BASINS.

NOTE
PROVIDE SMALL UPSTREAM
RETURNS (2-3m) AT 30m

MAX. SPACINGS ALONG FENCE

m

 

 

 

700 APPROX

 

150W x 500H CONCRETE WEIR
42 PREVENT WATER SEEPAGE.

 
  

 

 

    

 

G. CLEARING, GRUBBING AND STRIPPING FOR THE REMAINDER OF THE SITES EARTHWORKS AREAS. DIRECT _ RL AS SPECIFIED
RUN-OFF TO SEDIMENT BASINS. 200 X 200 -

H. UNDERTAKE EARTHWORKS OPERATIONS. TRENCH —— __

|. ERECT SEDIMENT FENCES TO LOTS PONDING WATER LEVEL.

J. PLACE SEDIMENT FENCES AT BOUNDARIES ADJACENT TO ROADWAYS WHERE LOT SLOPES TOWARDS ROAD SEDIMENT FENCE DETAIL ,.

K. TOPSOIL AND GRASS SEED ALL REMAINING LOTS FOLLOWING PROGRESSIVE COMPLETION OF EARTHWORKS IF N.S.

DIRECTED BY SUPERINTENDENT.

L. ON COMPLETION OF WORKS AS STATED ABOVE, ESTABLISHMENT OF 70% GRASS COVER AND APPROVAL BY
COUNCIL, REMOVE SEDIMENT BASIN, SEDIMENT TRAPS AND REHABILITATE AREAS. GRASS SEED IMMEDIATELY.
PLACE SEDIMENT FENCES TO DOWNSTREAM SIDES OF DISTURBED AREAS.

TYPICAL TEMPORARY SEDIMENT BASIN (TYPE D)

 

 

 

 

 

picts KIS Te XH BASE B-OTCOTS UR: nrk hastings REF NO. 132007.2398.02
vast [ous ana Suaraes SRE ET TERE ar CaS TATE
AMENOMENT DETALS SURVEYOR: ML_SURVEYS
wwe [ar [ar [68 38 Leybourne Street, Chelmer QLD 4068 PALM LAKE WORKS PTY LTD co Panrvn EROSION AND SEDIMENT
1500 10 5 0 10 20 A Mob: 0412 744 223 E: [email protected] L Ne CONTROL NOTES AND DETAILS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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