NYC-WTC_000219490

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): ISOS Lab Group #: 6885 Filter Type / Filter .Area: MCE .385 imnr Lab Sample #: 4 Grid Opening Size: 0.01 124

Client Sample #: 12 Area Examined: 0.0449b mm-

GRID BOX: Vlagnitlcation: 20.000 GRID ID: a?* Accelerating Voltage: 100 Ke\’ # Grid Openings: 4 Analysis Date: 3 2- 02

Analysis Performed By: MARK PEYSAKHOV

GO ! Structure Structure Type Length iO of Slructure Nor V i EDS T------ ’ iNonado I No MB C M >=05 u Chrys I Ampriiooie NonasD Amoig/ND I No Coord I <5p I Elements) II —— -■■4— -

4- —-i—

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: V = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification critena observed <10% particuiate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% t- B c Ml ’ ’4 y = EDS spectrum conforming to laboratory holes or opaque areas -------- =75------- M------1---- identification cnteria observed L lirysotile i i .AMPHIBOLES .Amphibole F = Single Fiber Amosite B = Bundle (<3 libers <i fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite No 11 -1 dentified ! । NSD = No Structures Detected

CITY_21MC100_002881180

NYC-WTC_000219490