In your opinion, would the Big Dipper grease inteceptor take the place of an in the ground grease trap? Also, would would be the cost of an in ground trap? I know they are expensive, but just a ball part guess is fine. Thank you for your time.
That is often a decision that your governing body makes. For example, in Scottsdale, the minimum is 600 gallons so an in ground is necessary. Glendale had a minimum of 100# so an in/above floor would work. in Phoenix, you have to have an in ground one, but it has to have three manhole openings. So you see, there is no one right answer.