NYC-WTC_000228372

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1989 Lab Group #: . 6455 Filter Type / Filter Area: MCE 385 Lab Sample #: ■> Grid Opening Size: 0.01124

Client Sample #: -) Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/26/02

Analysis Performed By: MARK PEYSAKHOV

GO, ■ Structure Structure Type Length ID of Structure fNorN EOS No >’05 U Amphiboie Nonaso (Nonadb F B C M Chrys Ambig/ND No .CiHird <6p Elements)

4-

Struct “ > i).Sg >5:1 Aspect Ratio Grid aaeptance: Positive diffraction pattern properties conforming to '^0% undissohred niter, overlapped or folded Totals laboratory loentification criteria observed * 10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u EDS spectrum conforming to laboratory holes or opaque areas identificaiior criteria observed Chivsotile AMPHIBOLES Amphibole F ’ Single Fioer Amosite B ’ Bundle !<3 fibers <1 fiber diameter aperi Crocidolite Ambiguous C ’ Cluster >3 intersecbons) Anthophyllite Non-Asbestos Tremolite M ’ Matrix Non-ldeniified Actinolite NSD = No Structures Detected

CITY_21MC100_002900086

NYC-WTC_000228372