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6 <br /> Forrest Westall said it was estimated to cost $1.5 billion to meet the requirements. <br /> Slide #5 <br /> Stage I is Being Fully Implemented <br /> New development - Rules in place since 2012 to limit nutrient <br /> loading from developed sites <br /> Agriculture •Stage I reductions have been met <br /> Wastewater treatment . Exceeded Stage I reduction requirements <br /> plants(WWTPs) <br /> Existing development 'Alternative investment-based compliance <br /> approach allows for full implementation <br /> Forrest Westall said agriculture in the watershed is shrinking, which has caused some <br /> reduction in nutrients, but has also resulted in increased development. <br /> Slide #6 <br /> Stage II Rules Require Reexamination for Existing Lands <br /> •Stage II requires agriculture make further reductions to <br /> nutrient loading to Falls Lake <br /> Agriculture •Agriculture in this watershed is mostly small family farms <br /> •Department of Agriculture and researchers at NCSU <br /> indicate limited additional opportunities to reduce loading <br /> 1 <br /> •Stage II rules for existing development are notfeasible and <br /> (Existing development meetingthem would not significantly reduce nutrient <br /> loading to Falls Lake <br /> J <br /> Slide #7 <br /> UNRBA Approach to the Re-examination of Stage II <br /> Or Science-based'Science-based'W FWCollaborative <br /> approach to water approach to water <br /> resource management resource management <br /> •Followedthe requirements in the Ru,cs •Worked with other researchers and <br /> and obtained DWR approvals organizations to expand our knowledge <br /> •collected four years of monitoring data base <br /> in the watershed and the lake •Meeting with internal and external <br /> •Developed watershed model to stakeholders to discuss <br /> understand sources of loading recommendations <br /> •Developingthree lake water quality <br /> models to illustrate impacts on water <br /> quality <br />