Heidegger, Heidegger was a boozy beggar who could think you under the table.

HE HATES THESE CANS

I know you can send soil to be tested by your local university extension, but how do you test for conaminents like used hydrocarbons, arsenic, lead, glyphosate-based herbicides, etc?

I am about to embark on a hobby of composting and would like to know.