Urbana,_City_of_11252024151156_IEPA.pdf

This document is a letter from the Illinois Environmental Protection Agency (Illinois EPA) to the City of Urbana regarding a Comprehensive Site Investigation Report for a property located at 211 N. Race Street in Urbana, Illinois. The letter provides detailed comments and requirements for site remediation, including the need for additional soil gas sample collection, excavation and confirmation sampling, asphalt parking lot repairs, and further evaluation of specific contaminants such as dieldrin, iron, tetrachloroethene (PCE), manganese, and lead.

The document outlines several critical actions required by the City of Urbana, including collecting an additional soil gas sample within five feet of identified exceedances, conducting a confirmation sample to the west of SB-12, resealing the asphalt parking lot, and performing a detailed evaluation of contaminants using Derived Water Quality Standards. The letter also mandates an offsite notification due to potential groundwater contamination migration, requires sampling and analysis of imported fill materials, and requests a certified copy of the City of Urbana's institutional control ordinance. The Illinois EPA requests two hard copies of a revised report or addendum incorporating these comments, along with an electronic copy to assist in the review process.