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Mr. Chris Dressel March 4,2014 Page 7 of 18 Task 2—Complete Phase I ESA(ASTM El 527-05 and ASTM E1527-13) Weaver Boos will complete a Phase I ESA in accordance with the new standard ASTM El527- 13 (which addresses the potential for vapor intrusion). The Phase I ESA will also meet the old standard, ASTM E1527-05. The Phase I ESA must be completed within 180 days PRIOR to taking title to the property and in the name of the IBP Comfort Letter recipient listed on State Form 51493. The letter recipient or authorized representative who signs State Form 51493 must also sign the Phase I ESA user questionnaire(see attached). The Phase I ESA will consist of the following general tasks: • Review of publicly available, reasonably ascertainable, and practicably reviewable ASTM El 527-13 specified standard government records. • Site reconnaissance in an effort to physically observe reasonably accessible interior and exterior areas of the Property, structures present at the Property and uses of adjoining properties from reasonably accessible public thoroughfares. • Evaluate the presence of radon at the Property by reviewing the EPA map of potential elevated radon concentrations,and county health surveys. • Visual assessment for obvious apparent conditions indicative of wetlands and an evaluation regarding whether the Property is within a 100-or 500-year floodplain. • Perform a Tier 1 Vapor Encroachment Screen (YES) to identify the presence or likely presence of contaminant of concern vapors in the subsurface of the Property caused by the release of vapors from impacted soil or groundwater either on or near the Property per ASTM E 2600-10; • Interview reasonably available current and past owner(s) and occupant(s) of the Property and local/state governmental agency representatives in an effort to obtain publicly available, reasonably ascertainable, and practicably reviewable information concerning the current and historical uses of the Property and adjoining properties. • Review of publicly available, reasonably ascertainable, and practicably reviewable historical records concerning the Property and adjoining properties in an effort to obtain information concerning the historical uses of the Property and adjoining properties.