NYC-WTC_000229230

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume /liters): 1824 Lab Group #; 8024 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 5 Grid Opening She: 0.01124 Client Sample #: 07 Area Examined: 0.04496 mm’ GRID BOX: Magnification 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/9/02

Analysis Performed By: MARKPEYSAKHOV

■ Structure Structure Type Length ID (rf Structure N or V EDS No >=05 p :>=5p (Nonadb F 6 C M Chrys AmphiMle Nwasi) AmbigM) ! No I Coord <5m Elements)

Struct = > 0.5g > 5:> Aspect Ratio Grid acceptance: Positive diffractitto pattern properttesow Totals laboraloiy identification criteria observed least 20 unfolded or overiapped grid squares <5% F 6 C M >5p EDS spectrum confomwg to laboratory boles or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 6 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophytllte Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_2IMCl00_000491773 NYC-WTC_000229230