EXH2105033705

PCHBPollution Control Hearings Board of the State of Washington

Just found the following article about a wetland, an airport, and the FAA... The situation seems similar to ours -- how to do wetland mitigation in the flight path of an airport. It appears that the solution in this case was to allow the compensatory wetlands to be built using a design that will minimize the bird attractions, and to require a contingency measure if the created wetlands prove to be a hazard. The article doesn't go into detail, but I assume there is some sort of monitoring for bird use and associated hazards. Hopefully, we'll find out Monday what the Port will propose, but we may be able to use an approach similar to that described in the article: * determine what in-basin mitigation is adequate; * agree on what kind of monitoring is needed to determine if there is "hazardous bird use", and establish an "action threshold" to determine whether changes are needed in the wetland; * define what type of management options can (and can't) be used if changes to the wetlands are necessary (e.g., vegetation management, changes to structures that regulate hydrology, etc.); and, * have a contingency plan in place that includes other in-basin wetland opportunities that would be developed if the existing mitigation proves hazardous and cannot be managed for safety. Assuming this approach is acceptable, there will be a number of devilish details to work out, of course. If we go this route, the 401 will need to include a great deal of…
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