EXH1145043120

5808 Lake Washington Blvd. N.E., Suite 200 Kirkland, Washington 98033-7350 November 12, 1999 AR 043120 1145 TABLE OF CONTENTS INTRODUCTION ............................................................................................................... 1 SUMMARY OF 1994 MSA STUDY .................................................................................. 3 DATA GATHERING .......................................................................................................... 5 INITIAL REVIEW .............................................................................................................. 6 FIELD RECONNAISSANCE AND ANALYSIS ............................................................... 7 FINDINGS ........................................................................................................................... 8 WETLANDS ................................................................................................................... 8 Arlington ..................................................................................................................... 9 Lake Sawyer ................................................................................................................ 9 Frederickson ................................................................................................................ 9 STREAMS ....................................................................................................................I0 Arlington...................................................................................................................I0 LakeSawyer..............................................................................................................I0 Fredcrickson..............................................................................................................II COMPARATIVE ANALYSIS .......................................................................................... 11 LITERATURE CITED ...................................................................................................... 13 Port of Seattle ii November 12. 1999 Supplemental Airport Site 555-1562-039 Wetland and Stream A nalysis K._,,_..=_l_2_ssts6zJ_s wt-r_rm ,_ AR 043121 LIST OF FIGURES MSA Site Selection ........................................................................................................ 2 LIST OF TABLES Tables ] Comparison of field-verified wetland boundaries with non-field-verified boundaries at the Arlington, Lake Sawyer, and Frederickson sites ............................... 8 Wetland habitats present at the Arlington, Lake Sawyer, and Frederickson sites ........................................................................................................... 8 Comparison of wetland resources between 1994 and 1998 at the Arlington, Lake Sawyer, and Frederickson sites ........................................................................... 12 Port of Seattle iii November 12, 1999 Supplemental Airport Site 555-1562-039 Wetland and Stream Analysis K_wefkm|_I_I62kS$1S6239WOSWETI_NDdto¢ All 043122 INTRODUCTION In 1994, the Puget Sound Regional Council ('PSRC) undertook a study to select and evaluate potential sites for a major airport to supplement SeaTac International Airport, pursuant to PSRC Resolution A-93-03. The present study revisits the 1994 Major Supplemental Airport Site Evaluation (MSA) to more thoroughly investigate wetlands and streams on the three sites previously shown to have the least amount of wetland impacts. The three sites are Arlington, Lake Sawyer, and Frederickson (Figure 1). This…

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Call to order – Roll Call – Quorum Established – Land Acknowledgement We would like to acknowledge that our Agency operates in four present-day counties, which are the traditional lands of the Coast Salish people, past and present. This acknowledgement does not take the place of authentic relationships with indigenous communities in our jurisdiction and [...]