PCHB09016605

Computer Model Used to Analyze Protectiveness of Fill Criteria ................. 2 Flow Parameters Used in Model .................................................................... 3 Transport Parameters Used in Model ............................................................. 4 Modeling of Historic Fill Sources .................................................................. 6 Results of Modeling ....................................................................................... 724 Conservatism of Model Results ..................................................................... 8 LOW FLOW ANALYSIS .......................................................................................... 9 RESPONSE TO DIRECT TESTIMONY OF DR. PATRICK LUCIA ................... 10 PREFILEDTESTIMONYOF DR.MICHAELRILEY BROWNREAVIS&MANNINGPLLC Pagei 1191SECONDAVE.,SUITE2200 ORIGINAL SEATTLE, WA 9810150311017 01 (206) 292-6300 1. I am a Civil Engineer with an undergraduate specialty in water resource engineering and graduate specialty in water quality hydrodynamics. I have worked as a consultant or in academia since 1980. I have assisted as an instructor for courses in urban hydrologic analysis, groundwater flow modeling and modeling of contaminant transport in groundwater. I have worked on numerous projects involving groundwater flow modeling and the transport of contaminants in groundwater, stormwater, lakes, rivers, and estuaries. A copy of my curriculum vitae is attached as Exhibit A. SUMMARY OF TESTIMONY 2. I performed a modeling analysis of the fill criteria established in the401 Certification to determine whether they are protective of water quality. I used conservative assumptions to run the model, including the assumption that all of the fill material used in the Third Runway embankment contained the maximum concentration of metals allowed by the numeric fill criteria in the 401 Certification. The model simulated how much of the soil constituents would leach out of the embankment over a span of 1,000 years. The model predicted that at no time…

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PSCAA Advisory Council Meeting Agenda
Add to CalendarMWednesday Mar 11, 9:00am - 11:35am
1904 3rd Avenue, Suite 105, Seattle, WA 98101
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 [...]