EESA06H3 Lecture Notes - Lecture 10: False Creek, Subduction, Cubic Metre
Lecture 10: Welcome to the Anthropocene (Part 2)
Groundwater:
• Another source of water
o Recharge area → ate flos to dishage aeas e.g., lakes ad ies o pools
underground to aquifers.
• Aquifers can be drilled into and get on the water
• Confined and unconfined aquifers (high permeability)
• Aquitards (low permeability confining beds)
o Confined aquifers: layes of lo peeaility → potet the auife o oth
sides from contamination
o Unconfined aquifers: open to the surface → ope to otaiatio enter very
easily)
Farm Wastes: Walkerton, Ontario
• Farm waste stored but was recharged (runoff) to an unconfined aquifer (surrounded by
joint limestone) that contaminated the well and drinking water.
o Well: pulled in more waste as water pumped out (due to cone of depression).
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Lecture 10: welcome to the anthropocene (part 2) Landfill: waste (refuse) dumped on sand/gravel, annual infiltration: how much water is entering the waste and will move out of the bottom (contaminated (cid:449)ate(cid:396) th(cid:396)ough plu(cid:373)es(cid:895) to a(cid:395)uife(cid:396)s, using concentration of chloride to map the plumes. Niagara escarpment: groundwater moves down (influenced by gravity-(cid:271)ase flo(cid:449)(cid:895) a(cid:374)d feeds (cid:272)(cid:396)eeks/sp(cid:396)i(cid:374)gs results in seepage in lakes, dis(cid:272)ha(cid:396)ge a(cid:396)ea to ha(cid:373)ilto(cid:374) ha(cid:396)(cid:271)ou(cid:396) to lake o(cid:374)ta(cid:396)io. In an engineered landfill site, there is a layer (plastic together), leachate collection pipes and collecting gas created from landfills to use for power. I(cid:374) to(cid:396)o(cid:374)to, (cid:373)ost (cid:271)uilt o(cid:374) fill (cid:894)old, du(cid:373)ped (cid:449)aste(cid:895) histo(cid:396)i(cid:272) fill: fill up (cid:396)i(cid:448)e(cid:396)s, (cid:449)etla(cid:374)ds fo(cid:396) (cid:373)o(cid:396)e (cid:272)o(cid:374)st(cid:396)u(cid:272)tio(cid:374) (cid:894)ofte(cid:374) (cid:449)ith (cid:449)aste (cid:373)ate(cid:396)ial contamination). Ashbridges bay: a bay filled with waste for industrial use, the(cid:374), g(cid:396)eat dep(cid:396)essio(cid:374) happe(cid:374)ed, a(cid:374)d (cid:272)ity used it to sto(cid:396)e (cid:272)oal, salt (cid:894)(cid:271)adly contaminated area), now, remediated for urban development (condos).
