4.19 KINES126

4.19 KINES126 - practical volume, and covered by material...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
KINES126.1 Monday, April 19, 1999 Announcements: Exam #2 is Friday April 23 at 10:10 am in 119 Osmond Building . Please bring a #2 pencil and spread out when you arrive. Lecture Notes: ENVIRONMENTAL HEALTH Composition of Trash 38% of all trash: paper 18% of all trash: yard trimmings The rest: plastic, metal, glass, food waste What did we used to do with trash? Middle ages: "toss it into the gutter" 1700s: "take it out to the country" 1800s: "take it to the dump" 1950s: "bury it in a landfill" 1970s: "burn it in an incinerator" What can you recycle? metal glass plastics paper cardboard yard/kitchen waste Landfills Two types of landfills: Sanitary landfills are disposal sites for non hazardous solid wastes spread in layers, compacted to the smallest
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: practical volume, and covered by material applied at the end of each operating day. Secure Chemical landfills are disposal sites for hazardous wastes, selected and designed to minimize the chance of release of hazardous substances into the environment. How long will trash be around? cigarette butts: 1-5 years aluminum cans and tabs: 500 years glass bottles: 1000 years plastic bags: 10-20 years plastic coated paper: 5 years plastic film containers: 20-30 years nylon fabric: 30-40 years leather: up to 50 years wool socks: 1-5 years orange and banana peels: up to 2 years tin cans: 50 years plastic six pack holders: 100 years plastic bottles and styrofoam: indefinitely...
View Full Document

Page1 / 2

4.19 KINES126 - practical volume, and covered by material...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online