what kind of sampling strategy would you use in the following situation?
which type of sampling would be preferred : grab sample, composite sample or continuous monitoring?
1. to study the contamination of fish in river where a chemical company has a weste water discharge outlet.
2. to identify accident release of chemical by the industry mentioned above.
3. to study the effect of automotive exhaust on the air quality in your city.
4. to identify ground water contamination around an abandoned chemical factory.