NYC-WTC_000214325

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sli et Client Name: NYC BOE Voli IC niters): 1920 Lab Group #: 8245 Filter Type / : ler Area: MCE 385 mm- Lab Sample 7 Grid C ling Size: 0.01124

Client Sample #: 07 Arc.i /vamined: 0.04496 mm*

GRID BOX. incation: 20,000 GRIP ID; Accelerat z Voltage: 100 KeV # Grid Openings; 4 Al vis Date; 6/23/02

Analysis Performed By: mark peysakhov

GO. Structure Structure Type Length ID c' ■T-fore N or EDS No (Nonadb F 6 C M >=05m ~1 >=5p Chrys Amphibc Nonasb Ambig/ND No Coord Elements) <sm

I 4 -— J J

Struct = > 0.5(1 >5:1 Aspect Ratio Grid accep^ce;' Positive diffraction pattern properties conforming to <50% undissolved filler, overlapp^ dr folded Totals laboratory identification criteria observed <10% particuiate coverage >5O%cov6rage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p EOS spectrum conforming to laboratory holes or opaque areas identification criteria observed r iile AMPHIBOLES A Ie F = Single Fiber Amesite "A' us S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C = Cluster (>3 Intersections) Anthophyllite Non- tos i M = Matnx Tremolite Actinolite Non-1 led ti NSD = No Structures Detected

CITY_21MC100_002852980

NYC-WTC_000214325