In My area a good estimate is $1000 per day per piece of equipment. I have perfect clay, if you dig a hole it holds water. I have 2 half acre ponds and I'm sitting right at $40000 for both. Hauling dirt is very expensive. My dirt did not go very far at all or my cost would have been much more. Remember the farther the dirt goes the more trucks you need or your excavator is sitting idle waiting for the truck to get back.