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ASSOCIAT ES INC. <br />514T-4711 us <br />Mr. Pat Dolan <br />Public WorksSupiervisor <br />City Of Roseville <br />21660 Civic Center Drive <br />Roseville, MN 55113 <br />Subject: Limited Intrusive Microbial Investigation <br />Firestation 41 <br />6610 Civic Center Drive <br />Roseville, MN 55,113 <br />ATC Project No. 22.25172.10003 <br />Dear Mr. Dolan: <br />1,929 County Road C2 Wes <br />Roseville, Minnesota 5511 <br />651-635.905( <br />Fax 651.635.908( <br />www,. atc-envi lro. con <br />ATC has completed a limited Intrusive microbial investigation of the above-referenced site. <br />Mr. Pat Dolan of The City of Roseville authorized ATC Associates Inc. (ATC) on December <br />51 21006 to perform a microbial (mold) intrusive Investigation which included a visual <br />inspection for water damage and mold growth. These activities were performed to assess <br />the sources and/or extent of the visual water damage and mold growth as they may be <br />affecting the Firefighter's Day room and adjacent areas. This investigation was limited to <br />the least elevation of the site building. <br />A reasonable effort was made to visually identify water damage and suspect microbial <br />impacted areas and collect moisture readings wherever possible. However; this report <br />does not imply a guarantee that all possible water or mold impacted areas were identified <br />since there are many building materials that are hidden or obstructed by walls, flooring, <br />partitions, etc. <br />BACKGROUND INFORMATION <br />ATC conducted a Limited Initial Microbial Evaluation on November 9, 21006, which included <br />air sampling for mold spores. The findings in ATC's report dated INovelmbelr 17, 20016 <br />indicated that a reservoir of Penicillium/Aspergillus and Basidiospores types of mold <br />existed in or near the Fire Fighter's Day Room area. ATC recommended an intrusive <br />investigation to locate thie reservoir of mold in or n ear the Firefighter's Day Room. This <br />report is a supplement to the report dated INovelmber 17, 21006. <br />C-13 <br />208925v4 <br />