Marine Produce Australia: Cone Bay Barramundi Aquaculture ...
Marine Produce Australia: Cone Bay Barramundi Aquaculture ...
Marine Produce Australia: Cone Bay Barramundi Aquaculture ...
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Version Author Authority Comment MPA response<br />
Rev5<br />
Rev5<br />
Rev5<br />
Rev5<br />
Rev5<br />
Rev5<br />
Rev5<br />
Rev5<br />
Oceanica<br />
Oceanica<br />
Oceanica<br />
Oceanica<br />
Oceanica<br />
Oceanica<br />
Oceanica<br />
Oceanica<br />
OEPA<br />
OEPA<br />
OEPA<br />
OEPA<br />
OEPA<br />
OEPA<br />
OEPA<br />
OEPA<br />
4. Table 4.2 – EQG. The EQG i and ii for the MEPAs are not supported. Depending on how<br />
far cages are from the western MEPA boundary, the 5 transect sites should be compared to the<br />
MEPA EQG and the HEPA EQG. All 5 sites should meet the MEPA EQG and sites at distances<br />
greater than the cage distance from the western boundary should also meet the HEPA EQG, at<br />
both the single sampling occasion and for the 4 month seasonal assessment. If the MEPA EQG<br />
are exceeded then the MEPA EQS are triggered. If the HEPA EQG are triggered at the relevant<br />
sites then the inference is that the coral and infaunal communities may be impacted west of<br />
the MEPA and the HEPA EQS are triggered. This applies to all EQG except chlorophyll a. For<br />
chlorophyll a only HEPA EQG are relevant.<br />
The EQG for HEPA and MaxEPA also need to include both the single sampling occasion<br />
assessment and the 4 month seasonal assessment against the EQG<br />
The chlorophyll a EQG for the MEPA appears to be unnecessary and could be deleted (there are<br />
no EQS for it to trigger).<br />
The EQG for DO in the HEPA and MaxEPA should be 90% saturation, not 60% saturation<br />
5. Table 4.3 – EQS. The EQS for the MEPA need to be revised in light of comments above<br />
on the EQG.<br />
A rationale is required for selecting the proposed Inverse Simpson Index triggers for MEPA and<br />
HEPA (i.e. x 0.2 and x 0.5 of background respectively).<br />
Agreed. The EMMP has been revised so that the EQG for gradient sites is calculated<br />
for high and moderate protection as appropriate.<br />
These changes are reflected in Table 4.2 (EQG for water quality) and<br />
Agreed. The EMMP has been amended to address this comment.<br />
Agreed. Has been deleted.<br />
Agreed. This EMMP has been amended.<br />
Agreed. The EMMP has been amended.<br />
The rationale for selecting the Inverse Simpson Index is that the method is sensitive<br />
to a range of adverse effects, from very minor through to severe. Indices of infauna<br />
species richness can be correlated accurately with levels of impact beneath seacages.<br />
The Inverse Simpson Index is a sensitive indicator that can be used to infer a<br />
gradient of impacts from minor through to severe. In recognition of the ecological<br />
protection zones applied in <strong>Cone</strong> <strong>Bay</strong>, indices for moderate and minor impact have<br />
been chosen for inclusion in the EMMP.<br />
The wording for each EQS could be made more consistent across the range of EQG triggers. Agreed. EMMP has been amended so wording is consistent.<br />
Suggest that the EQS for exceedance of the ammonia EQG in HEPA and MaxEPA should include<br />
‘evaluation of coral images’.<br />
The wording for LAC EQS for HEPA and MaxEPA should be corrected (LAC vs TSS?) as should<br />
the DO EQS.<br />
Sediment quality<br />
6. The EMMP still does not contain a monitoring program for assessing the potential<br />
accumulation of trace contaminants (e.g. metals) under and adjacent to the <strong>Barramundi</strong> cages.<br />
This does not require regular monitoring as measurements would only be required every 2-3<br />
years. It is noted that in Table 1.4 the proponent has committed to a ‘Risk Analysis’ of the<br />
potential for trace elements in the feed to bioaccumulate, but there is no detail as to what this<br />
might involve. OEPA recommend that the EMMP include monitoring of metals under and<br />
adjacent to the cages and at suitable reference sites.<br />
7. Section 4.2.4. Table 6.3 is not in the document. OEPA expects the proponent to select<br />
an analytical laboratory that can deliver analytical limits of reporting that are below the<br />
relevant environmental quality criteria.<br />
Agreed. The EQS for ammonia now includes coral monitoring.<br />
Agreed. The EMMP has been amended.<br />
Although monitoring for trace elements is not included as a standard component,<br />
Table 1.4 includes a commitment to undertake monitoring for trace elements within<br />
one year of the proposal’s implementation. Monitoring will be undertaken every three<br />
years thereafter.<br />
Agreed. The EMMP has been amended.