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Jellyfish Compliance with SQIDEP · MCU15/0122
Attached to the e-mail MCU15/0122 - Response to Information Request -Stormwater (Jellyfish compliance) Email 3 of 3.
Requirements Field Evidence Criteria Humes Ipswich Test Site PASS/FAIL
Sampling Events
Type of Event Rainfall Events1 Yes PASS
Minimum Number of Events Statistically relevant. Minimum of 10-15 (to be 10 events published and statistically relevant
PASS
confirmed) (see Appendix B).
Minimum Rainfall Depth Total event rainfall depth ≥2mm Only recorded if minimum is 2.6mm (see
PASS
Appendix A)
Minimum/ Maximum Storm Indicative 1 hour – Minimum recorded was 19min storm.
Duration/ Volume Importantly, the minimum storm event should relate Maximum recorded was 20 hour storm.
to the hydrograph and include a consideration of Given the small size of the site, the minimum PASS
catchment characteristics and may need to be event can be accepted as majority of runoff
adjusted based on site selection would have been recorded (see Appendix A)
Minimum Inter-event Time 72 hours. 2* (see discussion points following) 3 days/72 hours (see Appendix A) PASS
Device Size Full Scale Full Scale (see Appendix A) PASS
Runoff Characteristics Target pollutant profile of influent and effluent Influent and Effluent samples were tested not
only for TSS, TP and TN, but a range of heavy PASS
metals and other pollutants (see Appendix A)
Runoff Volume or Peak Flow Runoff at least 3 events should exceed 75% of the The treatment flowrate for a JF1200-2-1 is
design water quality volume/ treatment flow rates of 12.5L/s. Peak runoff through the device was at
the design & 1 event greater than the design flow least 75% or greater of the treatment flowrate
PASS
(9.4L/s) for 6 events. These 6 events also were
greater than the full treatment design flowrate
(see Appendix C)
1
Must not Include Controlled Field Tests. See glossary for the definition of controlled field tests.
2
Includes Controlled Field Test. See glossary for the definition of controlled field tests
3
from 1 site or minimum of 8 per site if more than one site is used
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