The short version
- , Cut and fill slopes default to 3:1 unless a soils engineer signs off on steeper.
- , Erosion control goes in before you disturb ground, silt fence is the first thing anyone looks at.
- , Erosion control has to be installed before the inspector shows up, not while they watch.
Three jurisdictions, one shovel
A site in Old Town answers to Park City Municipal. A site in Silver Creek, Peoa or Wanship answers to Summit County Engineering out of Coalville. Drop over the pass into Midway or Heber and you are under Wasatch County. Same excavator, same dirt, three different sets of eyes and three different tempers about what they want to see when they pull up.
The mistake general contractors make is assuming the inspector who passed their last job will apply the same read to this one. They will not. The codes overlap, but the local amendments, the slope limits and the erosion control expectations do not.
What Summit County Engineering checks
Summit County runs grading and engineering permits through the Engineering Division. The practical reality is simple: what gets looked at first is your erosion control. Silt fence, inlet protection and a real tracking pad, in the ground and functional before you disturb anything. Get that right and the rest of the process moves.
- Erosion control, in place at the start, silt fence and inlet protection functional before dirt moves.
- Pre-surface, required whenever you are building a driveway or road, before the driving surface goes on.
- Final, after construction, final driving surface, final grading and seeding are complete.
- Bond release, once roughly 70% of the disturbed area has revegetated.
Slope ratios and setbacks are non-negotiable defaults
Cuts and fills are held to no steeper than 3 horizontal to 1 vertical. You can go steeper, but only when a soils engineering or engineering geology report says the site was investigated and the steeper slope will be stable. That report is not something you produce the afternoon the inspector questions your bank.
Setbacks from the property line start at 2 feet. For a cut slope it is half the vertical height with a 2 foot minimum and 10 foot maximum; fill slopes are half the height with a 2 foot minimum and up to 20 feet. Interceptor drains or a soils report can push those numbers further out. On the tight lots in Park Meadows and Prospector, that setback math is what decides whether the pad you drew actually fits.
Trench safety is the one nobody negotiates
OSHA does not care whose county you are in. Trenches five feet or deeper need a protective system, sloping, benching, shielding or shoring, unless the excavation is made entirely in stable rock. A competent person inspects daily, and after every rainstorm, which up here means most afternoons in August. Ladder egress every 25 feet of lateral travel. Spoil piles set back at least two feet from the edge.
An inspector who sees an unprotected trench does not write a correction. They stop the job.
How to pass on the first walk
Call the inspection with the permit number, the address, the specific inspection you want and a live contact number, Summit County wants those details in the request. Have the permit posted and visible from the street the whole time work is underway. Have the stamped plan on site. Have your erosion control installed and maintained, not staged in the back of a truck.
Everything on that list is free. Every day you lose to a failed inspection is not.
Want this handled instead of managed?
We do this work every week in Park City and 25 miles around. Call and we’ll tell you straight what your site needs.