Anonymous added on February 1, 2018 | Answered

I am working on a school project in chemistry class that involves pollutants in nyc waterways, and my pollutant is sludge/biosolids. I need to carry out an experiment, and I was wondering how I could buy biosolids for my experiment, just enough to grow 5 or so plants.

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Answered on February 1, 2018

Call the waste water treatment plant.

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