Appendix J - Water Quality Classifications Surface Water Quality Classes Standard Numeric Interpretation of Standard (from RMA Third Schedule, unless marked† n which case from RMA Section 70)i F - Water Managed for Fishery Purposes (underlying class) † Conspicuous oil or grease films, Shall not be produced No numeric interpretation available scums or foams, or floatable or suspended materials † Colour or visual clarity Shall not change Hue shall not be changed by more than 10 points on the Munsell scale. The natural clarity shall not be conspicuously changed due to sediment or sediment laden discharge originating from the site of a land disturbance operation. There shall be no greater than 33% reduction in the visual clarity of the receiving water as measured by the horizontal sighting of a black disk; and/or There shall be no greater than 15% increase in the turbidity of the receiving water as measured in NTU. Measurements are to be made immediately above or upstream of the discharge and below the discharge after reasonable mixing. For a description of the two methods refer to the Ministry for the Environment Water Quality Guidelines No. 2, Guidelines for the Management of Water Colour and Clarity, June 1994. See the Definition Chapter for the definition of Reasonable Mixing. † Objectionable odour Shall not be emitted No numeric interpretation available † Suitability for consumption by Shall not be rendered unsuitable No numeric interpretation available farm animals App J - 3