Acts and Regulations

2002-13 - Water Classification

Full text
SCHEDULE B
Minimum Mixing Zone Standards
1A mixing zone shall not be of a size, shape or character that impairs or interferes with existing and appropriate uses of the receiving water outside the mixing zone.
2A mixing zone of a release in the water of a lake, pond or impoundment in existence on the commencement of the Regulation to which this Schedule is attached shall not exceed 10 per cent of the volume of the portion of the receiving water available for mixing.
3A mixing zone in a watercourse shall allow an appropriate zone of passage for movement and drift of all stages of aquatic life in the water of the watercourse and, for materials that elicit an avoidance response from aquatic life, the mixing zone shall not occupy more than 25 per cent of the cross-sectional area or volume of flow at any transect in the receiving water of the watercourse.
4A mixing zone in a watercourse shall not cause the accumulation of contaminants in the sediments or biota of the watercourse to a degree that impairs existing or appropriate uses.
5A mixing zone in a watercourse shall not interfere with, or cause an irreversible change in the physical or chemical nature of, spawning grounds, nursery areas or migration routes of any aquatic species in the water of the watercourse.
6A mixing zone shall not contain any contaminant so concentrated that, in an acute lethality test established by the Minister, it is shown to kill more than 50 per cent of any test organisms subjected to it during an exposure period specific to those test organisms.
7A mixing zone shall not cause a measurable change in the biological characteristics of the community structure of an organism that is an endangered species, as defined under the Endangered Species Act, cause such an organism to respond in an irreversible or harmful manner, render such an organism more vulnerable to predation or cause an irreversible change in the physical or chemical nature of the habitat of such an organism.
8A mixing zone shall not contain any contaminant in a concentration that would attract fish, invertebrates or wildlife.
9A mixing zone in a watercourse shall not overlap with another mixing zone existing in the watercourse and, if 2 or more mixing zones are in proximity in the watercourse, the minimum mixing zone standards set out in this Schedule shall be applied to the 2 mixing zones as though they were combined into one zone.
10Subject to sections 1 to 9 of this Schedule, a mixing zone shall meet the limits for linear distances from the point of release, surface area involvement, volume of the receiving water entrained in the plume and other definable, quantifiable limits established by the Minister that are set out in any approval issued in relation to the mixing zone under the Clean Water Act, Clean Environment Act or Clean Air Act.
SCHEDULE B
Minimum Mixing Zone Standards
1A mixing zone shall not be of a size, shape or character that impairs or interferes with existing and appropriate uses of the receiving water outside the mixing zone.
2A mixing zone of a release in the water of a lake, pond or impoundment in existence on the commencement of the Regulation to which this Schedule is attached shall not exceed 10 per cent of the volume of the portion of the receiving water available for mixing.
3A mixing zone in a watercourse shall allow an appropriate zone of passage for movement and drift of all stages of aquatic life in the water of the watercourse and, for materials that elicit an avoidance response from aquatic life, the mixing zone shall not occupy more than 25 per cent of the cross-sectional area or volume of flow at any transect in the receiving water of the watercourse.
4A mixing zone in a watercourse shall not cause the accumulation of contaminants in the sediments or biota of the watercourse to a degree that impairs existing or appropriate uses.
5A mixing zone in a watercourse shall not interfere with, or cause an irreversible change in the physical or chemical nature of, spawning grounds, nursery areas or migration routes of any aquatic species in the water of the watercourse.
6A mixing zone shall not contain any contaminant so concentrated that, in an acute lethality test established by the Minister, it is shown to kill more than 50 per cent of any test organisms subjected to it during an exposure period specific to those test organisms.
7A mixing zone shall not cause a measurable change in the biological characteristics of the community structure of an organism that is an endangered species, as defined under the Endangered Species Act, cause such an organism to respond in an irreversible or harmful manner, render such an organism more vulnerable to predation or cause an irreversible change in the physical or chemical nature of the habitat of such an organism.
8A mixing zone shall not contain any contaminant in a concentration that would attract fish, invertebrates or wildlife.
9A mixing zone in a watercourse shall not overlap with another mixing zone existing in the watercourse and, if 2 or more mixing zones are in proximity in the watercourse, the minimum mixing zone standards set out in this Schedule shall be applied to the 2 mixing zones as though they were combined into one zone.
10Subject to sections 1 to 9 of this Schedule, a mixing zone shall meet the limits for linear distances from the point of release, surface area involvement, volume of the receiving water entrained in the plume and other definable, quantifiable limits established by the Minister that are set out in any approval issued in relation to the mixing zone under the Clean Water Act, Clean Environment Act or Clean Air Act.