NYC-WTC_000228760

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (literst: 1800 Lab Group #: 7636 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #: 08 Area Examined: 0.04496 mm"

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 5/4/02

Analysis Performed By; ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or v EDS (Nonadb ] No F 8 c >=05 pi Chrys Amphibole Monash AiinMg/ND Elements) i __ No Coord <5|j -------------- 1 iI

Y I zlfi/l

Struct = > 0.5(1 >5:1 Aspect Ratio Grid acceptance: v'= Positive diffracdon pattern properties conforming to <50% undissolved fSter, overtapped or folded Totals laboratory idsntifcatKin criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or averta^Jed grid squares <5% F B C M ; >5p V= EDS spectrum confonning to laboratory doles or opaque areas .dentification criteria obsenred Chrysotile amphiboles . Amphibole F = Single Fiber Amosite a < Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C * Cluster (>3 Intersectonsl Anthophyllite Non-Asbestos T remoHte M = Mahw Actinolite Non-Identified NSD = No Strtjcrures Detected I

CITY_21MC100_002901638

NYC-WTC_000228760