ok guys i havent had to bid on any new work in 3 years so im a little out of it, one of my customers wants us to go through and raise the grade around the foundations of 53 houses. i figured 3 feet wide and 104 feet long is the area i would need to cover. i have access to free number two topsoil, some areas need a minimum of 3 inches and some need up to 6inches deep along the foundation but then it will be sloped away. then i must seed it. i know what has to be done and how to do and i have an idea in my head on what to charge but im looking for others opinions as well. how much topsoil should i need per house? and how long to wheel it by hand off the road approximately 40 yds from the road, there are no drive ways. thanks.