NYC-WTC_000212959

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count S jet Client Name: NYC BOE lie (liters): 1880 Lab Group #: 8244 Filter Tvi). iter Area: MCE 385 mm^ Lab Sample #: 8 Grit! iiing Size: 0.01124

Client Sample #: 08 AI -xamined: 0.04496 mm-' GRID BOX: iiilication: 20,000 GRID ID: Aceelii »■» Voltage: 100 KeV # Grid Openings: 4 vs is Date: 6/23/02

Analysis Performed By: MARK PEYSAKHOV

GO Structure Structure Type Length "uctiire N or y EDS No (Nonadb F B C M >=05 u '>=5m Chrys Ampl. Uonasb Ambig/ND No Coord <5p Elements)

J

Struct = > 0.5p > 5:1 Aspect Ratto Grid acceptance: <= Positive diffraction pattern properties conforming to undissolved filter, overlapped or folded Totals i,hn™.„A, laborator/ -identification Ko,;, obiierved ---------------criteria <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p V = EOS spectrum conforming to laboratory holes or opaque areas identification criteria observed tile AMPHIBOLES note F = Single Fiber Arnosite B = Buncle (<3 fibers <1 fiber diameter apart ■ Grocidolite :OUS

C = Cluster (>3 Intersections) Anthophyllite .stos Tremolite lit = Matrix Actinolite NSD = No Structures Detected

CITY_21MC100_002867720

NYC-WTC_000212959