Moved from here.
I know this is an old topic but I found it useful and figured I would add to it.
I had a hard dig in CA and the surcharge was 1.8k
They got about 3 feet down on day 1 and needed to hit 8+ for my deep end (7 feet deep for design)
Day 2 they brought out the ripper tool (a jackhammer attachment for bobcat) and finished at the end of the day
I know this is an old topic but I found it useful and figured I would add to it.
I had a hard dig in CA and the surcharge was 1.8k
They got about 3 feet down on day 1 and needed to hit 8+ for my deep end (7 feet deep for design)
Day 2 they brought out the ripper tool (a jackhammer attachment for bobcat) and finished at the end of the day