zones of Loss, Effect and Influence. Tiered management responses based on trigger levels with no reduction in coral or seagrass cover in zone of Influence. 95th percentile Exceedances of 95th percentiles for Pluto LNG Dredging (NTU) intensity, duration and frequency of SSC Program (WA) (derived from the baseline data) for different zones. Level 1 80th Exceedances of NTU from potentially percentile (NTU) impacted sites versus reference sites at Level 2 95th different percentiles of water quality percentile (NTU) tested over a frequency of exceeding Level 3 99th daily values for 14 days in 21 day Cape Lambert Port B (WA) percentile (NTU) duration. Management responses of – Level 1, 2, and 3 include: exceedance of Level 1 meant reducing dredging, Level 2 meant relocating the dredge, and Level 3 meant reducing dredging further. 80th percentile Exceedances of 80th and 95th (NTU) percentiles of background turbidity data Port Hedland RGPS (WA) (expressed as NTU levels), with the 95th percentile percentile chosen depending on tide, (NTU) season and impact zone. 25 mg/L TSS for 2 in TSS triggers represent short-term, 6 days medium-term and long-term water quality criteria. These criteria were 10 mg/L TSS for 7 in Gorgon Project (WA) applied to the Zone of Moderate Impact 21 days and Zone of Influence. For the sake of ongoing monitoring of in situ loggers a 5 mg/L for 20 in 60 TSS/NTU conversion was used. days NTU to be Exceedance of NTU at varying levels for confirmed, project in different periods of time (expressed as a approval stage. fraction of days above NTU values Wheatstone Project (WA) depending on management zone); trigger values being derived from data on Gorgon Project coral morality.
zones of Loss, Effect and Influence. Tiered management responses based on trigger levels with no reduction in coral or seagrass cover in zone of Influence. Pluto LNG Dredging Program (WA) 95th percentile (NTU) Exceedances of 95th percentiles for intensity, duration and frequency of SSC (derived from the baseline data) for different zones. Cape Lambert – Port B (WA) Level 1 80th percentile (NTU) Level 2 95th percentile (NTU) Level 3 99th percentile (NTU) Exceedances of NTU from potentially impacted sites versus reference sites at different percentiles of water quality tested over a frequency of exceeding daily values for 14 days in 21 day duration. Management responses of Level 1, 2, and 3 include: exceedance of Level 1 meant reducing dredging, Level 2 meant relocating the dredge, and Level 3 meant reducing dredging further. Port Hedland RGPS (WA) 80th percentile (NTU) 95th percentile (NTU) Exceedances of 80th and 95th percentiles of background turbidity data (expressed as NTU levels), with the percentile chosen depending on tide, season and impact zone. Gorgon Project (WA) 25 mg/L TSS for 2 in 6 days 10 mg/L TSS for 7 in 21 days 5 mg/L for 20 in 60 days TSS triggers represent short-term, medium-term and long-term water quality criteria. These criteria were applied to the Zone of Moderate Impact and Zone of Influence. For the sake of ongoing monitoring of in situ loggers a TSS/NTU conversion was used. Wheatstone Project (WA) NTU to be confirmed, project in approval stage. Exceedance of NTU at varying levels for different periods of time (expressed as a fraction of days above NTU values depending on management zone); trigger values being derived from data on Gorgon Project coral morality.