Concurrence and Advice Agency Response - Department of Environment & Resource Management · OPW11/0116

DERM Permit number: SPCE01881811

 

De.

DS.

D4.

D5.

All reasonable and practicable measures must be taken to minimise any increase in turbidity
of the waters or the release of contaminants as a result of these works to any waters or the
bed and banks of any waters.

There must be no release of petroleum/oil based or similar typé products from any vessel
used jn the dredging operations to any waters.

Where sediment control structures are necessary to ensure compliance with the conditions
of this development approval, such sediment control structures must be:
(a) Installed prior to any works commencing; and
(b) Maintained during the time period in which works take place and until rehabilitation
works (if any) have been completed; and
(c) Any control measures installed in receiving waters may only be removed when water
quality monitoring results demonstrate that the removal of such measures will not
have any adverse impacts on adjacent water quality.

In carrying out this activity, the release of contaminants must:

(a) only occur within the permitted areas specified in water allocation area NRS-RE-001

(b) not have any properties, not contain any organisms or other contaminants which are
capable of causing environmental harm; and «

(c) must not produce any slick or other visible evidence of oil or grease, nor contain visible
floating oil, grease, scum, litter or other objectionable matter; and

(d) must not produce any discolouration, outside a 200m mixing zone, which adversely
affects any environmental value applicable to the receiving waters.

(e) sediments identified or potentially containing acid sulphates are managed to avoid
exposure to air (i.e. sediments are to remain submerged and not used for beach
nourishment)

Schedule D - Water - Table 1

 

Quality Characteristic Limit

 

No visible plume in receiving waters is to
extend beyond 200m from any deposition
point and\or the dredge operation, to be
checked regularly when dredge is in
operation.

Turbidity Plume (visual)

 

pH (in-situ) Value not to be less than 6.5 or greater than
9.0, to be checked regularly when dredge is in
operation.

 

Petroleum products (oil, grease, fuel etc) No visible incidence, to be checked regularly

 

when dredge is in operation.

 

 

 

End Schedule D - Water

Schedule E - Air

E1.

The release of noxious or offensive airborne contaminants resulting from the works must
not cause a nuisance at any nuisance sensitive or commercial place.

 

Page 8 of 12 * 091217 + . Department of Environment and Resource Management

 

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