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F: Comment noted. Demolition surveys were completed for all removed structures and asbestos removal is <br />underway. <br />G: Site soil is currently being remediated to meet MPCA Tier 1 Residential Soil Reference Values (SRVs). <br />Groundwater remains the responsibility of the federal government under its Federal Facilities Agreement <br />and Record of Decision with the US EPA and MPCA. As part of the County's process of remediating site soil <br />impacts, all known releases of hazardous substances are being removed from the site or treated to make <br />them safe for residential use. This includes all impacts known when the County acquired the site, as well as <br />any impacts identified through the removal of at- and below-grade improvements at the site. <br />In addition, the County is completing incremental soil sampling in former TCAAP operational areas across <br />the site using an Incremental Sampling Methodology (ISM) that has been approved by both the US EPA and <br />the MPCA for use at this site. The purpose of the ISM sampling is to help rule out the presence of any <br />currently unidentified soil impacts. Any areas of soil impacts identified through this ISM sampling will also be <br />remediated to meet Tier 1 Residential SRVs. When the remediation and ISM sampling activities are <br />complete and all impacts have been addressed, the MPCA will issue a Commissioner's Certificate of <br />Completion (the highest level of liability insurance issued by the MPCA), and existing land use restrictions <br />will be modified consistent with the cleanup that was completed at the site. Any additional sampling would <br />be optional for the party moving forward with a proposed redevelopment within the site. <br />H: The project will meet Rice Creek Watershed District rules for rate, floodplain elevation, and water quality. <br />The District is adopting the revised National Oceanographic and Atmospher-14 <br />standards for storm design intensity, duration, and frequency. <br />I: Comment noted. The County has worked with the Army to properly seal as many onsite wells as possible. <br />Any additional abandoned wells will be capped and sealed in accordance with Minnesota Department of <br />Health requirements. No new public water supply wells are anticipated. <br />Ju 2014 A-6 <br />