What is the most economical stormwater seperator for use in a 10-acre subdivision discharging with 2 seperate storm sewers into a lake. There is no detention basin.
The first question to ask is what are you trying to do with the stormwater, treat for TSS, trash, TPH, etc. If you review the different postings there are some good references for the different products. First understand the regulatory requirement, then start the equipment selection process.