NYC-WTC_000229315

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume filters^: 1832 Lab Group #: 8150 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 15 Grid Opening Size; 0.01 i 24 Client Sample #: 17 Area Examined: 0.04496 mm’ GRID BOX; Magniflcation: 20,000 GRIP ID : C Accelerating Voltage: 100 K eV # Grid Openings: 4 Analysis Date: 6/17/02

Analysis Performed By; ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of structure N or V EDS No . (Noradb F B C M >=05 p :>=5p Chfys AmfMiibole NonssC AfflbijW No Coord <5p Etenents)

Struct = > 0.5g > 5:1 Aspect Ratio Grid acceptance; = Positive diffraction pattern propertias conforming to <50% undissotved fitter, overlapped or folded Totals laboratory identification criteria deserved <10% partcutate coverage >50% cowrage ale

4= EDS spectrum conforming to latwraiory least 20 unfolded or overlapped grid scuares <5% boles or opaque areas F B c M >5!J

identification criteria observed Chrysotile amphiboles' i Amphibole F = Single Faw Amosite B - Bundle j<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>} Intersections) Anlhopliyllite Non-Asb«ios Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_2IMCl00_000491951 NYC-WTC_000229315