Try to monitor the amount the company is polluting and also, what the exact chemicals are. For example, while chloroprene is off gassed, there are probably other related chemicals discharged, as well. These could be solvents used in manufacturing. Some could be listed in EPA documents.

But testing might also need to be done. And doing testing will cost money. Just so you are aware. Everyone is looking for inexpensive, accurate tests that anyone can do. These do exist, but often with interferences, or other problems.

Usually, for the testing to be accepted in court, you may have to go to approved labs, which adds to cost. That doesn't mean all the testing needs to be done at the high cost labs, but some probably will.

It's a challenge. But you can do it!

Sharing this post from @eustatic using minivols for monitoring in Plaquemines parish. https://publiclab.org/notes/eustatic/06-11-2020/previous-use-of-the-minivol-in-preventing-the-spread-of-cancer-alley

The EPA was previously doing chloroprene monitoring at Denka though, to my knowledge, this continuous monitoring has come to an end despite the finding of chloroprene emission spikes at the plant: https://www.epa.gov/la/denka-air-monitoring-data-summaries

Please correct me if this is wrong. The EPA is being petitioned to increase the level of chloroprene allowed to be air discharged, per a pier reviewed paper ( this gets into an iffy situation of who sponsored it and how neutral they were). Is this correct?