Public Health Assessment for Monticello Mill Tailings (DOE) and MonticelloRadioactively Contaminated Properties (a/k/a Monticello Vicinity Properties) Monticello, San Juan County, Utah, Region 5. CERCLIS Nos. UT3890090035 and UTD980667208

摘要

There are two National Priorities List (NPL) sites in Monticello, San JuanCounty, Utah: the Monticello Mill Tailings Site (MMTS) and the Monticello Vicinity Properties (MVP). The Monticello Mill Tailings Sites is a former uranium and vanadium processing mill. There are several sources of contamination in soils and buildings throughout the city of Monticello: the mill tailings which, in the past, were windblown into the city, were prevalent throughout the southeastern quadrant, and were also taken from the mill site and used as fill for open lands; backfill around water, sewer, and electrical lines; and sand mix in concrete, plaster, and mortar. Three hundred eighty-nine vicinity propertes and 11 peripheral properties have been remediated. The largest risk to the general public stems from exposure to direct gamma radiation form unremediated soils in Montezuma Creek Canyon.