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Attachment 4 - Stormwater Managment Plan
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Log in to see the plans as drawnSQIDEP Evaluation SPEL Basin, Sippy Downs
Performance Performance Requirement Monitoring action or result Compliance or
Criteria non
compliance
event collected less than 8
aliquots.
Hydrograph At least 50% of qualifying storms should include the first 70% storm USC reported the hydrographs Compliance
coverage coverage however did not report the
percentage of coverage. Visual
assessment of the hydrographs
which also included the sampling
time demonstrates in excess of
70% coverage for all complying
events. The 22nd November
storm had approximately 60%
coverage however was a non-
compliant storm event (for other
reasons).
Drapper reported that 7 events
did not achieve 80% hydrograph
coverage. These were excluded
to ensure hydrograph coverage
was higher than 80%.
Drapper’s Supplementary Report
reported hydrograph coverage
significantly exceeded the
minimum coverage requirements
of SIDEP v1.3.
13
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