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CONCLUSIONS <br /> Based on our visual observations and test results we offer the following conclusions: <br /> • Amec Foster Wheeler observed limited areas with Station 11 with water staining, water <br /> damage and limited areas of mold growth as confirmed by surface swab testing. Some issues <br /> in the building have been addressed as recommended in Amec Foster Wheeler's 2014 <br /> assessment report, and some remain to be completed. Amec Foster Wheeler understands that <br /> IRC is in process of addressing remaining areas in need of repair or remediation. Assessment <br /> methods by ESI were generally observed to be typical of an engineering investigation. <br /> • As mentioned earlier, ESI utilized Mycometer®and Bactiquant®test methods. While the <br /> technical basis of the Mycometer®method has been evaluated by the U.S. EPA, these tests <br /> are not accepted by the scientific community to be a surrogate for actual traditional analysis of <br /> fungi on surfaces and the interpretation guidelines associated with the Mycometer®have not <br /> been verified by any independent entity. <br /> • Surface moisture levels in all areas evaluated show no elevated levels of surface moisture or <br /> other indications of active water intrusion. <br /> • SVG of mold was observed in four localized areas: <br /> — Less than 2 ft2of SVG observed on GWB on attic floor and A/C unit over Exercise Room <br /> (sample IRC-20); <br /> — Slight SVG (& cobwebs) observed on NE corner on GWB south attic space(Sample <br /> IRC-21); <br /> — Approximately 1 —2 ft2 of SVG observed on GWB above false ceiling hallway on N. side of <br /> bldg. (Sample IRC-22); and <br /> — Approximately 1 —2 ft2 of SVG observed on GWB slightly above ceiling grid in hallway, <br /> north side of building (IRC-23). <br /> Mold growth in each area was present on the surface of indicated building materials and was localized <br /> to relatively small areas. The observed mold growth was likely due to localized water intrusion <br /> conditions and not related to systematic water intrusion or evidence of condensation. Substrate <br /> materials were intact and observed growth could be removed through standard mold remediation <br /> practices. <br /> 7 <br /> 44 <br />