There are extreme construction costs for petrol stations. It's highly regulated due to the fire risk and other issues. You can't even lead surface water into th

There are extreme construction costs for petrol stations. It's highly regulated due to the fire risk and other issues. You can't even lead surface water into the gutter without prior filtering. https://www.abwasser-analysezentrum.de/branchenuebersicht/mineraloelhaltiges-abwasser https://www.abwasser-analysezentrum.de/branchenuebersicht/mi...