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Lec15 - University of California Berkeley Civil Engineering...

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University of California, Berkeley Professor Ken Johnson Civil Engineering 70 Engineering Geology Civil Engineering 70 Lecture 15 10/16/07 CE 70 Midterm Thursday 10/25 12:30 – 2:00pm Sibley Auditorium Review Questions available on the website No cheat sheet 30-40 Multiple & 5-6 short answers Ground Water o Sea/saltwater intrusion o Groundwater withdrawal o Plume shape Movement o Source Area / Well Head Protection Coast o Waves o Long Shore Transport o Sand Budget o Coastal Protection San Francisco Bay Delta o Salt water margin separates the salt water of the bay from the fresh water from the delta o The state and federal water program is pumping water out of the delta The reduction in water leaving the delta results in a receding salt water margin The major issue is making sure this salt water margin doesn’t recede to much otherwise it can cause devastating ecological impacts. California Central Valley o The Sierra Nevadas used to be the old pacific coast Millions of years ago before the emergence of the cascades The Central valley was once submerged by ocean o Sediments are from saltwater marine deposits o Actually, very low into to valley is salt water If you go to deep, you’ll have salty water in your well
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