EXH0695026129

PCHBPollution Control Hearings Board of the State of Washington

our technical review capacity and knowledge of local stormwater conditions available for the review of the Port of Seattle's Comprehensive Stormwater Management Plan (SMP) for Master Plan Update Improvements at SeaTac International Airport. This effort has been an excellent example of how State and local government can work cooperatively together to provide high quality service to the region. It is important, when considering the results of our review, to keep in mind the limitations of the work that we have performed. First, this review is limited to ascertaining whether the SMP attained minimum compliance with the i 998 King County Surface Water Design Manual. Compliance with the technical provisions of the Design Manual does not mitigate all potential impacts of development and may not provide sufficient information to allow for approval under other codes and regulations. Compliance with the Design Manual is, however, a good start towards mitigating the impacts of this large and complex project. It is also important to remember that this review is limited to those development activities identified by the Port of Seattle as being Master Plan Update Improvements. While other projects of varying magnitude are being proposed for this area, only those projects included in the formal SMP submission were reviewed for this comment letter. No assumption of concurrence with the technical details or effectiveness of additional projects should be assumed without our specific written comment. This letter summarizes the general comments of our review (Enclosure 1) and provides specific • detailed comments on the…
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