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MCU21.0117 OPW21.0199-Att 4 Civil Eng · MCU21/0117
SEDIMENT RELEASE GUIDELINES
1. ALL RELEASES OF STORMWATER CAPTURED ONSITE, UNLESS OTHERWISE
FIELD INLET
15. FOR FIELD INLET STANDARD DETAIL AND SPECIFICATION REFER TO
OP WORKS
NOTED IN THIS STANDARD, MUST NOT EXCEED THE FOLLOWING LIMITS:
INTERNATIONAL EROSION CONTROL ASSOCIATION AUSTRALASIA (IECA) BEST ISSUE
PRACTICES STANDARD DRAWING ESC-02 GRATED STORMWATER (FIELD)
1.1. 50mg/L OF TOTAL SUSPENDED SOLIDS (TSS) AS A MAXIMUM
INLET SEDIMENT TRAP.
CONCENTRATION;
1.2. TURBIDITY (NTU) VALUE LESS THAN 10% ABOVE BACKGROUND;
OPERATION AND MAINTENANCE
1.3. pH VALUE MUST BE IN THE RANGE 6.5 TO 8.5 EXCEPT WHERE, AND TO
THE EXTENT THAT, THE NATURAL RECEIVING WATERS LIE OUTSIDE THIS
16. IN ACCORDANCE WITH NC ESC GUIDELINES, ALL ESC MEASURES SHALL BE LEGEND
INSPECTED:
RANGE.
· AT LEAST DAILY (WHEN WORK IS OCCURRING ON SITE) OR WEEKLY (WHEN
2. THE CONCENTRATION OF TSS RELEASED BY DEWATERING MAY ONLY CONSTRUCTION ENTRY/EXIT
WORK IS NOT OCCURRING ON SITE)
EXCEED 50mg/L WHERE IT CAN BE DEMONSTRATED AND SUPPORTED SHAKEDOWN AREA
· WITHIN 24 HOURS OF EXPECTED RAIN; AND
THROUGH DOCUMENTATION THAT:
· WITHIN 18 HOURS OF A RAINFALL EVENT (I.E. AN EVENT OF SUFFICIENT
2.1. FURTHER SIGNIFICANT RAINFALL IS FORECAST TO OCCUR BEFORE THE SEDIMENT FENCE
INTENSITY AND DURATION TO MOBILISE SEDIMENT ON SITE).
TSS CONCENTRATION IS LIKELY TO BE REDUCED TO 50mg/L; (INDICATIVE LOCATION)
17. IN ACCORDANCE WITH NC ESC GUIDELINES, MAINTENANCE OF ESC
2.2. RELEASING A HIGHER CONCENTRATION OF TOTAL SUSPENDED SOLIDS
MEASURES SHALL OCCUR IN ACCORDANCE WITH THE FOLLOWING TABLE:
WILL RESULT IN A BETTER ENVIRONMENTAL OUTCOME BY PROVIDING
STORAGE FOR THE CAPTURE AND TREATMENT OF RUN-OFF FROM THE
IMMINENT RAINFALL AND RUN-OFF. MAINTENANCE SCHEDULE
2.3. ALL REASONABLE AND PRACTICABLE STEPS HAVE BEEN TAKEN TO ESC MEASURES MAINTENANCE TRIGGER
TIMEFRAME FOR COMPLETION
OF MAINTENANCE
TREAT THE WATER WITHIN BEST-PRACTICE TIME FRAMES;
2.4. FLOCCULENT HAS BEEN APPROPRIATELY APPLIED AND THE
CONCENTRATION OF TSS IN THE CAPTURED WATER HAS ALREADY
SIGNIFICANTLY DECREASED.
3. FOR ALL OTHER STORMWATER RELEASES, FLOWS AND DISCHARGES FROM
THE SITE, THE RELEASE LIMIT PRESCRIBED IN (1a) ABOVE MUST NOT BE REPORTING
EXCEEDED UNLESS THE DEVELOPMENT IS IN FULL COMPLIANCE WITH THIS 18. CONTRACTOR IS TO PROVIDE AN UPDATED PROGRAM OF ESC MAINTENANCE
STANDARD. AND CONTROL OF ALL STAGES OF WORK FOR APPROVAL BY THE
SUPERINTENDENT.
NOTE: IT IS RECOMMENDED THAT A SITE-SPECIFIC RELATIONSHIP BETWEEN
TURBIDITY AND SUSPENDED SOLIDS IS DETERMINED FOR EACH SEDIMENT BASIN.
ONCE A CORRELATION BETWEEN SUSPENDED SOLIDS AND TURBIDITY HAS BEEN NOTES
ESTABLISHED FOR A SEDIMENT BASIN, TESTING STORMWATER FOR COMPLIANCE
WITH RELEASE LIMITS, PRIOR TO RELEASE, CAN BE DONE ON SITE WITH A 1. CONTRACTOR TO PROVIDE FINAL ESC DESIGN TO SUIT
TURBIDITY TUBE OR CALIBRATED TURBIDITY METER. THIS HAS THE ADVANTAGE PROPOSED CONSTRUCTION METHODOLOGY
OF PROVIDING IMMEDIATE ASSESSMENT TO JUSTIFY A RELEASE RATHER THAN 2. ALL DISTURBED SURFACES TO BE LANDSCAPED IN
WAITING FOR LABORATORY RESULTS TO CONFIRM CONCENTRATION LEVELS ACCORDANCE WITH LANDSCAPE CONSULTANTS DRAWINGS
AND COMPLIANCE. NOTE THAT POST-RELEASE TSS VALIDATION IS 3. CONCRETE WASHOUT TO NOT BE UNDERTAKEN ON SITE, OR
APPROPRIATE TO DEMONSTRATE THAT THE NTU/TSS CORRELATION IS BEING TO BE UNDERTAKEN ON A DESIGNATED LOCATION.
MAINTAINED. CONTRACTOR TO ESTABLISH CONCRETE WASHOUT AS PER
IECA GUIDELINES.
SEDIMENT CONTROL
1. ALL SEDIMENT AND EROSION CONTROL MEASURES TO BE IN ACCORDANCE
WITH INTERNATIONAL EROSION CONTROL ASSOCIATION (IECA) AUSTRALIA
GUIDELINES AND THE SPECIFICATIONS.
2. SEDIMENT AND EROSION CONTROL DETAILS SHOWN ARE MINIMUM
REQUIREMENTS. IT IS THE CONTRACTORS RESPONSIBILITY TO INSTALL
ADDITIONAL CONTROL MEASURES AS DEEMED NECESSARY THROUGHOUT
CONSTRUCTION.
3. THE CONTRACTOR IS RESPONSIBLE TO MAINTAIN ALL SEDIMENT CONTROL
DEVICES IN A FUNCTIONAL ORDER AND REPLACE ALL BLOCKED SEDIMENT
DEVICES AS REQUIRED UNTIL SUCCESSFUL OFF MAINTENANCE OF WORKS.
4. CONSTRUCTION OF ALL SEDIMENT MANAGEMENT DEVICES TO THE
SATISFACTION OF THE SUPERINTENDENT. SHALL BE COMPLETED AND
EFFECTIVE PRIOR TO:
a. STRIPPING OF TOPSOIL AND GRASS.
b. BULK EARTHWORKS TO THE SITE.
c. SERVICES INSTALLATION.
d. PAVEMENT CONSTRUCTION
5. 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 APPLICATIONS.
6. THE BULK EARTHWORKS AND SEDIMENT CONTROL LAYOUT PLAN SHALL BE
READ IN CONJUNCTION WITH THE APPROVED DRAWINGS.
7. PRIOR TO COMMENCEMENT OF CONSTRUCTION APPROVAL IS TO BE
OBTAINED FROM THE SUPERINTENDENT FOR THE LOCATION OF THE SITE
ACCESS POINT AND WASH DOWN AREA WHICH ARE TO BE MAINTAINED
THROUGHOUT THE CONSTRUCTION PERIOD.
8. IF SEDIMENT AND EROSION CONTROL DEVICES HAVE BEEN FOUND TO BE
DIFFERENT OR FAILED IN SERVICE, CORRECTIVE ACTION IS TO BE SEDIMENT AND EROSION CONTROL:
UNDERTAKEN IMMEDIATELY WHICH MAY INCLUDE AMENDMENTS' ADDITIONS CONTRACTOR TO ALLOW FOR PROVISION OF ALL
TO THE ORIGINAL APPROVED EROSION CONTROL PLANS. SUCH REQUIRED SEDIMENT AND EROSION CONTROL
AMENDMENTS ARE TO BE APPROVED BY SUPERINTENDENT, IF DEEMED DEVICES IN ACCORDANCE WITH IECA AND NOOSA
NECESSARY AND RELEVANT. COUNCIL POLICIES AND GUIDELINES
9. OVERALL
a. TEMPORARY DRAINAGE CONTROL FLOWS SHOULD BE DIVERTED
AROUND THE WORK SITE WHERE POSSIBLE.
b. ALL DRAINAGE, EROSION AND SEDIMENT CONTROLS TO BE INSTALLED
AND BE OPERATIONAL BEFORE COMMENCING UP-SLOPE EARTHWORKS.
c. IN AREAS WHERE RUNOFF TURBIDITY IS TO BE CONTROLLED, EXPOSED
SURFACES TO BE EITHER MULCHED, COVERED WITH EROSION CONTROL
BLANKETS OR TURFED IF EARTHWORKS ARE EXPECTED TO BE DELAYED
FOR MORE THAN 14 DAYS.
SEDIMENT FENCE 02/07/21 ISSUED FOR OPW - MVP
10. FOR SEDIMENT FENCE STANDARD DETAIL AND SPECIFICATION REFER TO
DATE REVISION MARK CHK
INTERNATIONAL EROSION CONTROL ASSOCIATION AUSTRALASIA (IECA) BEST
PRACTICES STANDARD DRAWINGS SF-01 AND SF-02 SEDIMENT FENCE. PROJECT ENGINEER
TEMPORARY CONSTRUCTION ENTRY/EXIT
11. FOR CONSTRUCTION ENTRY / EXIT STANDARD DETAIL AND SPECIFICATION
REFER TO INTERNATIONAL EROSION CONTROL ASSOCIATION AUSTRALASIA
(IECA) BEST PRACTICES STANDARD DRAWINGS EXIT-01 AND EXIT-02
CONSTRUCTION EXIT - ROCK PAD (CONSTRUCTION SITES ONLY), EXIT-03 -
ROCK PADS FOR BUILDING SITES AND EXIT-04 AND EXIT-05 CONSTRUCTION
EXIT - VIBRATION GRID.
KERB INLET
12. FOR KERB INLET STANDARD DETAIL AND SPECIFICATION REFER TO
E [email protected]
INTERNATIONAL EROSION CONTROL ASSOCIATION AUSTRALASIA (IECA) BEST A 37 MARY ST NOOSAVILLE, QLD
PRACTICES STANDARD DRAWING ESC-03 KERB INLET SEDIMENT TRAPS
P +61 7 5211 1003
CHECK DAMS
13. FOR CHECK DAM STANDARD DETAIL AND SPECIFICATION REFER TO CLIENT
INTERNATIONAL EROSION CONTROL ASSOCIATION AUSTRALASIA (IECA) BEST
PRACTICES STANDARD DRAWING RCD-01 CHECK DAMS. VIVIDO
REVEGETATION PROJECT
14. FOR REVEGETATION STANDARD SPECIFICATION REFER TO INTERNATIONAL
EROSION CONTROL ASSOCIATION AUSTRALASIA (IECA) BEST PRACTICES THE BELVEDERE ON PEARL
STANDARD DRAWING R-01 REVEGETATION GENERAL.
5 PEARL STREET, COOROY
TITLE
EROSION AND SEDIMENT
CONTROL PLAN
PROJECT NO. DRAWING NO. STATUS
21011 C10 OPW
DRAWN DESIGNED SCALE ISSUE
MVP BRP 1:200 A
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