Appendix J - Water Quality Classifications Standard Numeric Interpretation of Standard (from RMA Third Schedule, unless marked† in which case from RMA Section 70) Biological Growths Shall be noundesirable growths Bacterial and/or fungal slime growths shall not be visible to the naked eye as obvious plumose growths or mats The daily average carbonaceous BOD5 due to dissolved organic compounds (ie those passing a GF/C filter) shall not exceed 2 g/m3. The median concentration of dissolved reactive phosphorus (DRP) shall be less than 15 mg/m at low flows,3 unless other physical and/or biological factors prevent undesirable biological growths developing at higher DRP concentrations FS - Water Managed for Fish Spawning Purposes* Temperature Shall not adversely affect spawning of Shall not exceed 14C between Aprilo specified fish species during the and October except where naturally spawning season occuring. Species: • trout • salmon • lamprey • giant kokopu • koaro • inanga Biological Growths Refer Class AE Refer Class AE CR - Water Managed for Contact Recreation Purposes* Visual Clarity Shall not be so low as to be unsuitable Horizontal sighting range of 200mm for bathing black disk shall exceed 1.6m during low flows. Contaminants Shall not render water unsuitable for Median concentration of enterococci bathing of at least 20 samples taken throughout the bathing season shall not exceed 33 per 100 mL, nor shall any sample exceed 107 enterococci per 100 mL. The bathing season is defined as the period of 1 November 10 to 1 April inclusive. Biological Growths Shall be no undesirable growths Refer Class AE Seasonal maximum cover of stream or river beds by periphyton as filamentous growths or mats (more than 3mm thick) shall not exceed 40%, and the biomass on the bed shall not exceed 100mg chlorophyll a/m2 WS- Water Managed for Water Supply Purposes* pH Shall be within the range 6.0 - 9.0 N/A Suitability for treatment Shall not be rendered unsuitable for Turbidity, except that produced treatment (equivalent to coagulation, naturally under flood conditions, shall filtration, and disinfection) by not exceed 20 NTU presence of contaminants App J - 5