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Ocean level
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Ocean level

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  • 1. Life in stage s
  • 2. Clean Zone Normal clean water organisms (trout, perch, bass, mayfly, stonefly) 8 ppm Decomposition Zone Trash fish (carp, gar, leeches) Septic Zone Fish absent, fungi, sludge worms, bacteria (anaerobic ) Recovery Zone Trash fish (carp, gar, leeches) Dissolved oxygen Oxygen sag Biological oxygen demand 2 ppm Direction of flow Point of waste or heat discharge Time or distance downstream Clean Zone Normal clean water organisms ( trout, perch, bass, mayfly, stonefly) 8 ppm