Materials and Resources

Data Collection Form

Location:__________________________________________________________
Group Name: ___________________________________________
Site Name and #: ________________________________________
Student Names: __________________________________________
Date: ___________ Time of Day: __________________________

Temperature:
(take 3 measurements at your site)
Air Temperature: _____________ Water Temperature: _____________
Air Temperature: _____________ Water Temperature: _____________
Air Temperature: _____________ Water Temperature: _____________

Record any difficulties your group had in measuring temperature / any sources of possible thermal pollution you saw at the site:

pH: (take 2 measurements for each test)
with pH paper: _________ with MWRA comparator:___________
with pH paper: _________ with MWRA comparator:___________

Anything that you see at the site that might lead to this pH level?

Turbidity: (take 2 measurements)
Does the water look turbid?
0.5 ml portions of turbidity reagent added:______ Turbidity in JTU:__________
0.5 ml portions of turbidity reagent added:______ Turbidity in JTU:__________

Do you observe anything at the site / can you think of any reason why the water would have a high turbidity at this site?

Dissolved Oxygen: (take 2 measurements)
Atmospheric pressure:_____mm (get from instructor)
100% Dissolved oxygen capacity ______mg/L (get from chart in DO handout)
DO trial 1:______ mg/L trial 2:_______ mg/L average: ____ mg/L

What % saturation of DO do you have?

Can you think of any reasons why you have this DO level?

Total Hardness: (titrate 2 50 ml samples)
1: ml EDTA used:______ Total Hardness: ______mg /L of CaCO3
2: ml EDTA used:______ Total Hardness: ______mg /L of CaCO3
Average:___________

How would you classify this water?

Can you think of any reasons to explain this level of hardness?

Fecal Coliform: (run 2 30 ml samples and a control)
1: Colonies counted:_______ FC in cfu / 100ml:___________
2: Colonies counted:_______ FC in cfu / 100ml:___________
Control: Colonies counted:_______ FC in cfu / 100ml:___________

Average between the 2 samples: _________cfu / 100ml

What kind of use is water with this FC level suitable for?

What could have caused this FC level?

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