NYC-WTC_000228721

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume (liters): 1808 Lab Group #; 7602 Filter Type / Filter Area: MCE 385 mm* Lab Sample #; 8 Grid Opening Size: 0,01124 Client Sample #; 10 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/1/02

Analysis Performed By: ROMAN PEYSAKHOV

GG. Structure Structure Type Length ID of Siructure Norv EOS I No >=05 p )>=5^ JNonadt j F B C M Chrys Amphibofe Norasb Ambjg/ND No Coord <5m Elements) ! ---------------- j

/IS /^= ZZLZ (I a

Struct - > O.Sg >5:1 Aspect Ratio Grid acceptance; v'= Positive dillraction pattern properties co'ifcrmihg to <50% undiasoived niter, overlapped or folded Totals laboratory rdeniification aiter.a observed <10% particulate coverage >50% coverage ate leas! 20 unfolded or overlapped grid squares <5% F B C M I '/= EDS spectrum conforming to laboratory holes or opaque areas — Identification criteria observed Chrysotile amphiboles' ' Amphibole —I— F = Single Fiber Amosite B = Bundle (<3 fibers <1 liber diameter apart Crocidolite Ambiguous C - Cluster intersections) Anthophyllite Non. Asbestos Tremolite M - Matrix Actinolite Non-Identified ! NSD = No Structures DeteUed

CITY_21MC1OO_OO29O1569

NYC-WTC_000228721