Department of Environmental Protection; Deleting provisions creating the Environmental Regulation Commission; requiring that residential properties of a specified size located in a certain area connect to a central sewer system or upgrade to a specified type of nutrient-reducing wastewater treatment system; authorizing remediation plans for certain properties to have certain requirements related to existing conventional onsite sewage treatment and disposal systems; revising legislative findings and intent for the Florida Communities Trust; revising the approval criteria for certain onsite sewage treatment and disposal systems, etc.