Jaffrey LAKE – Lab prep

CHALLENGE: How can phosphate and nitrate indicators identify the

contamination problem in Jaffrey Lake?

Pre-Lab Question

• Jaffrey City has a sustainability challenge.• The quality of Jaffrey Lake has declined.

Explain how the decline of Jaffrey Lake impacts the sustainability of Jaffrey City. Be sure to discuss the “3 P’s” of sustainability!

Background Informationresearch and record your findings

• Nitrates: Do some research to find out about nitrates and water pollution. Record your findings.

• Phosphates: Do some research to find out about phosphates and water pollution. Record your findings.

• Point source: define• Non-point source: define• Eutrophication: Make sure to have

specific detail and a diagram in this definition!

JAFFREY LAKE predictions

• Refer to the diagram provided.• Select 10 sites that you would like to test.• In your lab notebook, list each site by number and

why you would like to test that site.

JAFFREY LAKE Data

• Your data table must be NEAT (you MUST use a ruler….no exceptions!!)

• Your data table must have a title.• Your data table must include the 12 lake locations

your group will decide to test; the Chemplate cup #, and the results for both nitrate and phosphate.

• An example…..

JAFFREY LAKE Data• Jaffrey Lake Phosphates and Nitrates

Location # Cup # Phosphates (ppm) Nitrates (ppm)