Planning commission approves earth fill for Pioneer Road lots after owners cite clean state-supplied fill

The Marriott-Slaterville Planning Commission unanimously approved an earth-fill application for two Pioneer Road lots (applications 79 and 80), on the condition that the owners provide final compaction and contamination documentation and that fill placement maintain a 50-foot setback from the canal and include weed mitigation.

Staff introduced the item for the two lots just west of City Hall on Pioneer Road. Property owners Mike and Karen Martinez said they purchased the lots and plan to raise the elevation to match adjacent parcels using fill from a state overpass project. The owners said the source is Whitaker Construction and that compaction tests and documentation are available. "So when this does get approved, we will need an approval letter from Marriott Slaterville to hand off to the state of Utah so that there is no liability whatsoever," the owner said, describing the paperwork process.

Commissioners asked whether prior contamination at nearby sites (members referenced historical leaks from Hill Air Force Base) raised risks for bringing fill onto the site. The owners and staff said the proposed fill was tested; the owner repeatedly stated the material is clean. The commission made approval contingent on verification of those test results and on conditions that the fill stay at least 50 feet from the canal, that no contaminated soil be accepted, and that the applicant implement weed mitigation measures.

Why it matters: The fill permits will allow the owners to match adjacent grades and move forward with future site plans; conditions are intended to protect neighboring properties, water rights and drainage patterns while requiring documentation to reduce environmental risk.

Next steps: Owners must submit final compaction and contamination test results to planning staff before fill placement; staff will confirm those documents meet city requirements.