NYC-WTC_000196044

NYC 9/11 Public Portal Document

08/09/2002 13:12 FAX 212 353 8306 ATC 1^005 Aug 09 02 11:14a PK Microbialaga 85S 483 4085 P-3

P & X. Microbiology Services, Inc. P&K Report No.; 020726-081 Page 2

Wipe Sainples ' SaiTiplo ID Area Medium Dilution Fungal / Oacierial ID Colony Cone. *’ Percentage* (inchZ) used factor counts , (CFU / in2) (%) Fungi .0725-WTC-W5 1 MEA lOOX Aspergillus versicolor 24 2.400 77 PeniciHium 3 300 10 sterile fungi 3 300 10 Tricboderma koningii 1 100 3 Total: 3.100 Bacteria TSA 4100X gram negative bacteria and others 312 1,279,200 65 Pseudomonas sp. non aeruginosa 169 692,900 35 Total; 1,972,100 Fungi 0725-WTC-W6 1 MEA lOOX Aspergillus versicolor 1 100 < 1 Cladosporium 24 2,400 17 Pcnici Ilium 3 300 yeasts 116 n.eooj 81 1 Total; 14.400 Bacteria TSA lOOX Bacillus 9 900 4 gram negative bacteria and others 236 23,600 93 Micrococcus lutcus 4 400 2 Rhodococcus 6 600 2 Total; 25,500 Fungi 0725-WTC-W7 1 MEA lOOX Basidiomycctcs I 100 25 PeniciHium 3 300 75 Total: 400 Baelcrin TSA lOOX gram negative bacteria and others 72 7,200 97 Micrococcus lutcus 2 200 3 Tomi; 7,400

• Percentage of cdch group of fungi / bacteria in wuil population. •* Concentration is (CfU/Sarnplc) if sample amount is NA. Media types: Cellulose agar (CA), Czapclc cellulose agar (CCA), cornmeal agar (CMA), 2% malt extract agar (MEA), 2% malt extract agar plus 20% sucrose (MEA+S). inhibitory mold agar (IMA). Pseudomonas isolation agar (PIA), rose bcngal agar (REA), s.ibouraud dextrose agar (SDA), tryptic soy •agar (TSA). nutrient ajar (NTA), Blood agar (BA). StaphylococcutMedium 110 (Staphy). The defection limit of fungal and bacterial analysis using culture mcihods is one colony. The Cfuanlitation limits vary from analysis tn analysis and from processing procedure to processing procedure. Contact u5 to dMermineyour quantitation limits.

Approved by. Chin S. Yang, Ph.D., Microbiologist

Quality control checked by;

CITY_21MC100_003037804

NYC-WTC_000196045