EXH AR023764: Agenda — Third Runway Flow Augmentation/Water Rights Meeting

This October 31, 2000 agenda document outlines a meeting between the Port of Seattle, the Department of Ecology, the Attorney General's Office, and Seattle Public Utilities to address water rights issues related to flow augmentation in Des Moines Creek, connected to the Sea-Tac Airport Third Runway project. The meeting focused on identifying potential sources of stream flow augmentation water, including the SPU Highline Well Field, Highline Water District wells, detained stormwater, and reclaimed water. Key discussion points included whether water right changes were necessary, what approvals were required from the Department of Ecology, and how to develop an action plan for resolving outstanding legal and regulatory issues.

Notes

Exhibit AR023764. Meeting agenda dated October 31, 2000, for a Port Of Seattle Third Runway flow augmentation and water rights discussion. Attendees include Port of Seattle, Department of Ecology, Attorney General’s Office, and Seattle Public Utilities (SPU). Agenda covers potential sources of stream flow augmentation water for Des Moines Creek, including SPU Highline Well Field, Highline Water District Well No. 1, detained stormwater, and reclaimed water. Key issues addressed: whether a water right change is required under RCW 90.03.380 and WAC 173-152-050(3) to use municipal water for flow augmentation, change in purpose of use, change in place of use, Ecology approval timing relative to 401 certification, information requirements for change applications (historic/current usage, non-abandonment, impairment of existing rights, public interest), applicability of the ‘Arrowleaf’ amendment, and whether changed water rights should be converted to trust water rights. Document stamped DOE9/17/01 0054, AR 023764.

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