Exhibit A Project Date: November 13, 2002 Project Description: ASTM E1105 water testing without differential pressure and AAMA 501.2 nozzle tests were performed on the plaster wall system, windows and aluminum curtain wall system at these high-rise and low-rise residential structures in South of Market, San Francisco. Project was nearing completion on the exterior when the winter rains came. Water infiltration was noted through the curtain wall system and adjacent to the windows within the cement plaster wall system. Our office facilitated the testing and evaluation of the source of the problems through isolation testing of the various exterior products. Eventual repairs consisted of the installation of an elastomeric coating system to minimize water entry at deficiencies between the cement plaster and windows. Additional repairs were also performed within the window wall systems. 
Exhibit B Project Date: August, 2004 Project Description: Assisted developer and contractor in the evaluation of water infiltration problems in new multi-story residential structure in the Marina district of San Francisco. Performance water tests were utilized to isolate the sources of infiltration by testing various building components. Water test standards used for the evaluation processes were AAMA 501.2 and ASTM E1105. Services were provided to assist the builder in the resolution of the moisture intrusion.
Exhibit C Project Date: September 9, 2004 Project Description: Provided third party observations for installation of a hot rubber asphalt roof system being installed on the upper roof and mechanical penthouse of this highrise structure. Problems existed with the use of a non-vented steel deck with a lightweight insulating concrete fill. Installation of the hot rubber roof system was occurring during hot weather conditions in mid- summer. Moisture trapped within the concrete created blisters within the newly installed hot rubber roof system. Moisture vapor was trying to escape the concrete, as it could not escape through the un-vented deck. Repairs consisted of additional venting of roof system and special primers to inhibit moisture vapor drive into the newly installed membrane.
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