Trained volunteers are collecting baseline data on water quality, and testing for selected suspected contaminants of the coral reef.
The coral reef water quality is being tested by trained volunteers. 
( z1 test :ARG0 ( z2 person :ARG0-of ( z3 volunteer ) :ARG1-of ( z4 train ) ) :ARG1 ( z5 quality :mod ( z6 water :mod ( z7 reef :mod ( z8 coral ) ) ) ) )