Has anyone had experience with modifying asbestos-cement pipe? Specifically, I'm looking for a way to cut into a 10" AC line (non-potable water) and install a new flanged flowmeter, isolating one side with existing valves and the other with a water stop. I've seen AC pipe removed and...
any estimate of the quantity of diesel down there (from product thickness, soils samples, tank losses, etc.)? Otherwise, I would say kick up your pumping rate until you see the production decrease or generate some decent drawdown.
I agree, unfortunately the previous three consultants were less concerned with proper well design than they should have been. The client wasn't interested in new wells, but didn't seem to mind the O&M or well rehab once a year. A case of picking my battles.
I used to work on a similar site with fluctuating GW, diesel fuel, and a conducitive layer of sand. We intially started with some GW depression pumps to keep the NAPL contained, then added skimmer pumps and vacuum enhancement. We found two things really assisted in the vacuum enhancement...