There appear to be a few people in the community advocating for the “dual basin” approach for Capitol Lake. There are many reasons why that option is not viable. The dual basin would allow the river sediment to pour into Budd inlet, unchecked by Capitol Lake. The resulting mudflat would spell the death knell of Olympia’s economically vital shoreline businesses which are so important to Percival Landing, the Port of Olympia and downtown Olympia. The removal of the tide lock for the dual basin would also remove the only flood control mechanism we have on the Capitol Campus to deal with sea-level rise and seasonal flooding downtown. Evergreen State College scientists have shown that adopting the dual basin option will impair water quality in Budd Inlet. Currently Capitol Lake, by removing nitrates, helps increase water oxygen levels in Puget Sound. Also, let’s not forget that the dual basin option will cause a need for immediate dredging after tide lock removal and shift the expense for dredging from the state to Thurston County taxpayers. Lastly, creating a dual-basin is by far the most expensive approach, costing perhaps $250 million that could otherwise be used to help with numerous cleanup projects throughout Puget Sound. Maintaining and improving Capitol Lake, by dredging, would cost roughly 14 percent of the dual basin option.