EXH1240050023

PCHBPollution Control Hearings Board of the State of Washington

2.1 Overview of the Borrow Areas and the Master Plan EIS Process 6 2.2 Site Soils and Geology 8 2.3 Site Hydrology 8 2.4 Wetlands 10 2.5 Other Anticipated Watershed and Habitat Issues 11 3.0 SUMMARY OF BORROW DEVELOPMENT OPERATIONS 12 : 3.1 Description of Site Preparation Activities 12 3.2 Description of Mining Practices and Operating Plan 14 4.0 CONCEPTUAL RECLAMATION PLAN 20 4.1 Description of General Parameters and Features 21 4.2 Reclamation Concepts 22 4.3 Description of Reclamation Plan 25 5.0 REVEGETATION PLANNING, WEED CONTROL, AND WILDLIFE 26 6.0 RECLAMATION AND REVEGETATION MONITORING PLAN 26 6.1 Reclamation and Slope Stability Monitoring Program 26 6.2 Revegetation and Stormwater Control Monitoring Program 27 REFERENCES 28 DRAWINGS Title Sheet,DrawingIndex,SiteAccessandLocationMap, andBorrowAreaand HaulRouteLayout Abbreviations/Legend/Notes Portof SeattleLandOwnership SouthAirfieldandBorrowArea ZoningMap Hart Crowser -oPa_'eiJ-4978-62 AR 050024 CONTENTS (Continued) DRAWINGS (Continued) Site Exploration Planand Perched Water-Bearing Zone Elevation Contour Map Shallow Regional Aquifer ElevationContour Map, Borrow Area 3 Hydrogeologic CrossSections Perched Water-Bearing Zone and Shallow Aquifer Hydrogeologic CrossSections Perched Water-Bearing Zone and Wetland Drainage Swale Wetlands Map Showing Pre-Mining ElevationContours Conceptual Haul Route Alternatives from Borrow Areas to Airfield Conceptual Detail - Haul Route CrossingDes Moines Creek Pre-Mining ElevationContour Map Year 1: Conceptual Mid-Year Mining Plan Year 1: Conceptual Mining Plan Near End of Year Year 2: Conceptual Mining Plan Near End of Year Year 1: Conceptual End of Year Segmental Reclamation Plan Year 2: Conceptual Endof Year Final Reclamation Plan ATTACHMENT 1 DNR COMMENT LETTER ON FINAL EIS ATTACHMENT 2 DNR COMMENT LETTER ON FINAL SEIS Hart…
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