Part A You have been asked to evaluate two different wells for safety. Well A and Well B have the same owner but are in
different locations. Examine the results in the table for each of the wells.
Well A
Well B
Contaminant Amount (mg/L) Contaminant Amount (mg/L)
arsenic
arsenic
0.06
0.040
cadmium
0.007
barium
3.0
cyanide
0.31
cadmium
0.001
nitrate
lead
0.000
12
0.000
thallium
nitrate
0.00
Refer to the data table and determine which contaminants are found in toxic quantities in Wells A and B.