13.2 The Wallis Lake Estuary Management Committee - Great Lakes ...

Wallis Lake Estuary Management Plan
Strategy/Outcome Actions Monitoring and performance indicator Data interpretation Target Comments Progress
Minimise point source
chemical pollutant inputs
to the Wallis Lake estuary
NSW Food Authority conducts shellfish testing
for pesticides and metals on an annual basis in
the island/entrance area of the lake.
Time series analysis of
data.
TBD
W.3.1,
W.3.2,
W.3.3,
W.3.4
Review of this
program should
analyse trends in
the pesticide and
metal
concentrations of
shellfish and set
realistic targets for
reducing the input
of these pollutants.
Strategy/Outcome Actions Monitoring and performance indicator Data interpretation Target Comments Progress
Reduce the leaching of
ASS products to the Wallis
Lake estuary
W.4.1,
W.4.2,
W.4.3
Compliance rates with ASS provisions of LEPs,
DCPs and other relevant Environmental
Planning Instruments.
GLC SoE reporting. 100% DCP to be gazetted
Rehabilitate
Darawakh/Frogalla
Swamp wetland to reduce
acid products entering the
Wallamba River
W.4.1
Follow up survey of fish and aquatic
invertebrates of Darawakh Creek (see Curlew
Biological Services, 2000).
Comparison of before and
after rehabilitation data for
abundances and
biodiversity of fish and
aquatic invertebrates.
TBD
Review of this
program should
analyse the fish
and aquatic
invertebrate survey
conducted prior to
rehabilitation and
set realistic targets
for increased
abundances and
biodiversity of
organisms.
Water sampling
(pH in particular) in
Darawakh Creek
could be used by
GLC as a more
regular,
inexpensive
assessment of
rehabilitation.
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