Methods
Collected samples
from parking lots,
industrial sites,
roads, residential
areas
Strained out large
particles to obtain
fine “grit”
Made 10% stock
solution of “grit” in
water. Shook solution
to dissolve all water
soluble substances.
Tested samples at
0.1% and 1% and
measured Daphnia
live/dead rate over
72 hours
Daphnia Magna
enlarged
Test strips used to find what
contaminants were in the
water