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Ms. A n Kolata August 14, 2012 Page 6 of 9 I In sup rt of the activities described additional communications (telephone, email, facsimile, and in -per Ion, either on -site or off -site) between Weaver Boos, City, IDEM personnel, and will occur to effectively manage the project. Task 4 — Prepare Corrective Action Plan (if necessary) If soil and/or groundwater contaminant concentrations exceed RISC Residential Default Closure Levels then corrective action will be necessary. Once the nature and extent of contamination has been d fined Weaver Boos will prepare a Corrective Action Plan (CAP). A specific scope of work and cost estimate for the preparation and implementation of the CAP cannot be provided until the site characterization has been completed. The CAP will be prepared in accordance with IDEM rules. The CAP may be prepared separately from the FSI Report and may or may not be submitted to IDEM concurrently depending upon the magnitude of the subsurface impacts. Based on our finding from the ISC and the IDEM correspondence, dated June 27, 2011, Weaver Boos anticipates that quarterly sampling of the groundwater may be all that is required (no active remedi tion) for the CAP. If this continues to be the case after the FSI has been completed then no separate CAP may be necessary. Typically, IDEM will require a minimum of two years of quarter y sampling to demonstrate that groundwater contaminant levels are below closure standards prior to proceeding with site closure. However, IDEM, may be amenable to a more expeditpd closure of the site in light of the proposed redevelopment. Task 3 � Implement Corrective Action Plan (f necessary) Weaver{ Boos can implement corrective action if found necessary by IDEM based on Site conditi ns. Task 4 � Request Closure/1VFA Once I EM approves the CAP (review will normally occur within 60 days of submittal), Weaver Boos will implement the CAP. Periodic progress reports may be required to be prepared and submitted to IDEM. Once the CAP has been completed then a closure report will be submitted requesting a No Further Action Letter (NFA) letter for the release.