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-Celi Cassette Analysis Date Received: 04/24/02 Attn: Victor Hillman Aerotech Method: A001R Date Reported: 04/24/02 Lab Number 17 18 19 Sample Identification A3-2 Vault 1 A4 Kitchenette A5 Outside Trailer (PM) Volume (M’) 0.0750 0.0750 0.0760 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 3 2 2 CounVM’ Count/M’ Count/M* Total Count Result Detection Limit % Total Count Result Detection Limit % Total Count Result: I Detection Limit % Mycelial Fragments <13 13 n/a <1 <13 13 n/a <1 <13 13 n/a Pollen Count <1 <13 13 n/a <1 <13 13 n/a 24 320 13 n/a Total Fungal Spores 24,200 322,667 13 100 21,700 289,333 13 100 13 173 13 100 Fungal Spore Identification Fungal Spore Identification Fungal Spore Identification Alternsha Amerospores 10 133 13 77 Arthrinium Ascospores Aspergillus/Penicil^uir} -like 18,000 240,000 13 74 7,700 102,667 13 35 Auraobasidium Basidiospores 6,200 82,667 13 26 14,000 186,667 13 65 Bipolaris/Dreschlera Botrytis________________ Chaatomium Cladosporium 3 40 13 23 Cunularia Epicoccum Fusarium Memnoniella Nigrospora

O Oidium/Peronosppra Pithomyces/Ulocladium H K Rusts I to Smuts/Myxomycetes StachybPtrys Stamphytium o o Torula I o Unidentified Conidia o Netas: Mostly asp/pen like & basidiospores Mostly asp/pen like & basidiospores Prepared By: Technical Review: cn Ui CS Review: Final Review; A001RPage2of2 Ui Cn

NYC-WTC_000205425