NYC-WTC_000228555

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE \ olunie (liters): i IS 00 Lab Group 7448 Filter Tvpe ' Filter Area: MCE Lab Sample #: 9 Grid Opening Size: 0,01:

Client Sample #: 11 Area Examined: 004496

GRID BOX: Magnification: 20,000 GRID ID: Accelerating V'oltage: too KeV Grid Openings: 4 Analv'sisDate: 4 17 02

Analysis Performed By: ROMAN PEYSAKHOV

GO. 1 structure Structure Type Length ID of Structure Nor No F B C M >=05 p >=5pi i Ctirys Amphibole Nonaso I AmcigiN: Coord . _ <5p // J 1/ erf' //

Struct = > 0.5a >5:1 Aspect Ratio Grid acceptance: 9= Positive cliffracdon pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped gnd squares <5% i I F ! B ! C ; M v= EDS sperjum conforming to laboratory holes or opaque areas h identification criteria observed Clirysotile AMPHIBOLES Amphibole i F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No S .ructures Detected

CITY_21MC100_002900987

NYC-WTC_000228555