NYC-WTC_000228487

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYG BOE Volume (liters): 1920 Lab Group#: 7351 Filter Type / Filter Area: MCE 385 mm- Lab Sample#: 1 Grid Opening Size: 0.01124 Client Sample#: 03 Area Examined: 0.04496 mm-

GRID BOX: Magnification: oq qqq

GRID ID: Accelerating Voltage: 100 KpV # Grid Openings: 4 Analysis Date: 4* 7'02

Analysis Performed By: MICHAEL GORYCKI

GO Structure Structure Type Length ID of Structure N or 7 EDS No (tvonaac F B C M >^5m i>=5jj Chrys Amphibole Nonasb Ambig/ND No Coord <5p elements)

r 23/5/2 2/4 3-^ ■f 5 AZ7 1

Struct = > 0.5g > 5:) Aspect Ratio Grid acceptance: V’ Positive diffraction pattern properties conforming to <50% undissolved Alter, overlapped or folded Totals laboratory identification criteria Observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F i B i C i M V= EDS spectrum conforming to laboratory holes or opaque areas j ' ! I identiiicauon cnteria observed Chrysotile AMPHIBOLES Amphibole ----i------ 1------ F = Singie Fiber Amosite Crocidolite .Ambiguous B = Bundle (<3 fibers <1 Aber diameter apart C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T rernolite M = Matrix Actinolite Non-ldentified j NSD = No Slruciures Delected

CITY_21MC100_002900747

NYC-WTC_000228487