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analysis Appendix C-3 aquatic life criteria aquatic life standards assessment benthic macroinvertebrate community biological classification Cheumatopsyche Chironomidae classification attainment decision classification attainment evaluation collected cone Count all individuals Count the number Department of Environmental determination Diptera divide downstream Ephemeroptera ethyl alcohol Family Functional Group following counting rules genus habitat identified to genus/species impact individuals per sampler linear discriminant analysis linear discriminant models log number macrophytes Maine Department Maine State Legislature Mean Abundance Count minimum provisions narrative aquatic non-attainment number of different number of individuals number of replicates numeric criteria Oligochaeta organisms Perlidae Plecoptera professional aquatic biologist Professional Judgment rare specimens replicate samplers replicates to yield retrieval Richness Count Rivers and Streams rock baskets rules in Variable sample total sampling season sieve bucket slide mounts Stage Model substrate material taxa taxon taxonomic test community Total Mean Abundance Trichoptera unusual or rare upstream Variable Reserved water quality classification yield mean number