Dona Bay WMP - Sarasota.WaterAtlas.org - University of South Florida

Annual Suspended Solids Loads700000600000500000Existing ConditionPhase I - 5 mgd yieldPhase II - 10 mgd yieldPhase III - 15 mgd yieldkg TSS / year4000003000002000001000000Figure 5.15 – Loads of Total Suspended Solids from the Cow Pen Canal for Four Scenarios(means + s.e.)Load reduction estimates for total suspended solids range between 82 and 88 percent.The load reduction estimate for total suspended solids contains the highest percentreduction calculated, which is based on the extremely efficient reduction in suspendedmaterials that occurs with most stormwater runoff treatment systems.In general, responses of benthic habitats to pollutant load reductions associated withpotential flow diversion scenarios are likely to be significant. This analysis suggests thatall three phases of the proposed watershed/hydrologic restoration project would have abeneficial effect to benthic communities. The percent reduction in nitrogen loadspossible (38 to 57 percent) would be similar to the percent load reductions for nitrogenthat were experienced by Tampa Bay and Sarasota Bay in recent years (Tomasko et al.2005).5 - 24