NYC-WTC_000205424

NYC 9/11 Public Portal Document

Liberty Mutual Group Lab Number; A-204-4206 114 Turnpike Rd., Suite 204 AIHA EMLAP No. 102297 Project Name: WTC Westboro, MA 01581 Air-O-Cell Cassette Analysis Date Received: 04/24/02 Attn: Victor Hillman Aerotech Method: A001R Date Reported: 04/24/02 Lab Number 14 15 16 Sample Identification Al Outside Trailer (AM) A2 Stairs Outside Entrance A3-1 Vault 1 Suspect Possible Volume (M’) 0.0750 0.0750 0.0750 Date Analyzed 04/24/2002 04/24/2002 04/24/2002 Percent Of Trace Analyzed 100% of Trace at 600X Magnification 100% of Trace at 600X Magnification 100% of Trace at 600X Magnification Debris Rating 2 4 1 CounUW Count/M’ CounVM* Total Count Result Detection Limit % Total Count Result Detection Limit JL Total Count Result Detection Limit % Mycelial Fragments <1 <13 13 n/a <1 <13 13 n/a <1 <13 13 n/a Pollen Count <1 <13 13 n/a 1 13 13 I n/a <1 <13 13 n/a Total Fungal Spores 2 27 13 100 6,004 80,053 13 100 1 13 13 100 Fungal Spore Identification Fungal Spore Identification Fungal Spore Identification Altemaria Amerospores 1 13 13 100 Arthrinium 1 13 13 <1 Ascospores Aspergillus/Penicillium -like 3 40 13 <1 Aureobasidium Basidiospores 6,000 80,000 13 100 Bipolaris/Dreschiera Botrytis Chaetomium Cladosporium 2 27 13 100 Curvularia Epicoccum Fusarium Memnoniella Nigrospora O Oidium/Perortospora H Pithomyces/Ulocladium Rusts to Smuls/Myxomycetas S Stachybotrys o o Stamphylium___________ o Toruia I o Unidentified Conidia o Notes:

cn Prepared By: Technical Review: Ui CS Review: Final Review: A001R Page 1 of 2 Ui Ui

NYC-WTC_000205424