GEO 101 Environmental Geology class notes

GEO 101 - GEO 101 Environmental Geology Selected Water Pollutants Oxygen Demanding Waste-Biochemical Oxygen Demand When organic rich waste uses up

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
GEO 101 Environmental Geology Selected Water Pollutants Oxygen Demanding Waste - Biochemical Oxygen Demand -- When organic rich waste uses up oxygen needed for aquatic life. Diseases resulting from contamination by Fecal matter: Pathogenic Organisms - Fecal Coliform Bacteria -- found in fecal matter. Used to measure sewage presence in water. Not dangerous for the most part. However, there are strains that are deadly. - Cryptosporidium -- Bacteria, can be lethal. Infested Milwaukee water supply at one point. - Giardia -- Found in beaver, deer and other animals. Why you shouldn't drink from wild streams without filtering water first. - Cryptosporidiosis : caused by cryptosporidium. Symptoms: watery diarrhea and abdominal cramping: No treatment, 155 cases in NY in 2006 - Giardisis caused by Giardia. Symptoms: diarrhea, abdominal cramps, bloating and fatigue. Treatment antibiotics: 938 cases in NY 2006 Those at Risk: -People residing in institutional settings -people in day care centers -foreign travelers -Individuals who drink improperly treated surface water -Homosexual or bisexual males.
Background image of page 1

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

View Full DocumentRight Arrow Icon
Flow of Pollutants Ground water flows along the gradient in the water table, taking a path that is perpendicular to the contours. Pollutants in the groundwater will flow in plumes along the same path. -When a pollution source is introduced into the groundwater, the resulting plume will only affect areas down gradient from the source. Areas up gradient of the source, to the sides of the plume or below the plume will not be contaminated. Groundwater flows relatively slowly. On Long Island a typical rate of flow is about one foot per day near the water table, slower at greater depths. As the contaminant plume travels it becomes somewhat broader and more dilute as it slowly mixes with the surrounding cleaner water. Depending upon the original concentration of the plume and the distance the plume
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/08/2008 for the course GEO 101 taught by Professor Hanson during the Fall '08 term at SUNY Stony Brook.

Page1 / 7

GEO 101 - GEO 101 Environmental Geology Selected Water Pollutants Oxygen Demanding Waste-Biochemical Oxygen Demand When organic rich waste uses up

This preview shows document pages 1 - 3. Sign up to view the full document.

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