The proposed rule amendments revise several definitions used in Chapter 62-302, F.A.C., and correct several typographical errors in Rule 62-302.400, F.A.C. Revisions to Rule 62-302.500, F.A.C., establish numeric criteria for Lindane based on acute toxicity effects. The Department also proposes to amend Rule 62-302.530, F.A.C., to: (1) clarify how surface water quality criteria are applied, (2) update a number of surface water quality criteria, (3) correct outdated rule references for a number of surface water quality criteria, and (4) allow for the use of Ekman and Ponar sampling devices for determining the Shannon-Weaver Diversity Index. Rule 62-302.532, F.A.C., is revised to establish numeric nutrient criteria in the Tidal Peace River estuary. Rule 62-302.533, F.A.C., is created to update the surface water quality criteria for dissolved oxygen (DO) in both fresh and marine waters.