Tier 1 Assessment

The purpose of the Tier 1 assessment is to use limited site data and conservative assumptions to determine whether a site poses an unreasonable risk to public health, safety or the environment. The first form below is known as the Tier 1 report. The Tier 1 Report is followed by a guidance document. This guidance in combination with the Tier 1 software* is used to help with completion of a Tier 1 evaluation and to fill out the Tier 1 report form.

If you would like a CD copy of Tier 1 software, contact Dawn Santa Maria at 515-725-8365 or Dawn.SantaMaria@dnr.iowa.gov.