Hello everybody I've been doing a lot of research, and have found some info, but I would like to have a little more light shed on this topic or if someone could point me in the right direction to go read up on this. I do not mind reading I do it all day on these forums.

I read in a post on another forum that the clean water act (1970's I believe) made it manditory for properties to have dry wells is this true with all commercial properties built after 1970'?

If so how are these dry wells found? Do we ask the pm, dm or gm about them?

If you are cleaning on a site with dry well is recovery necessary? Or is it considered a violation to bmp's?

From what I have read and seen on this topic it should be just fine to let wash water go into these systems because well built dry wells filter out the sludge and other this and drains it into the ground which I believe does not reach the waters of the united states and therefore does not violate the (CWA), but I have been wrong before.

Sorry about all the questions I'm just really trying to inform myself as best as possible any info will help.