1. APES 3.25 and 3.28 Please take out your Troubled Waters FRQ and Sewage Treatment Simulation

2. Troubled Waters FRQ Scoring

3. Sewage Treatment Recap Make a diagram showing: Influent flow of water Primary treatment method (labeled) Secondary treatment method (labeled) Tertiary treatment method (labeled) Effluent flow of water Where bio-solids end up

4. Septic Tanks Used for homes in rural areas (instead of connecting to sewage treatment plant “grid”) Self-running, using gravity and bacteria BUT sludge must be pumped out and treated every 5-10 years!

5. Legal Sewage Dumping Did you know? It is LEGAL to dump sewage into bodies of water in cases of big storms When storm run-off + regular sewage from homes overwhelm the capacity of a treatment plant, treatments plants can release untreated water http://www.kingcounty.gov/services/environment/wast ewater/cso-status.aspx

6. Oil Spills! 45% of oil found in the ocean is from natural oil seeps from the crust The rest is from human activity No notes on this topic- you are responsible for knowing the info. on the front of the salmon-colored oil spill clean-up lab

7. Oil Spills Lab You are doing two trials- one before dispersant (detergent) and one after https://www.youtube.com/watch?v=8yASbM8M2vg

8. Due Next Time Oil Spills Lab Oil Spills Lab Study for Vocab Quiz A-C (alphabetical list on my website) Study for Vocab Quiz A-C (alphabetical list on my website)