NYC-WTC_000228776

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYCBOE Volume Piters): 1816 Lab Group #: 7646 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 11 Grid Opening Size; 0.01124 Client Sample #: 13 Area Examined; 0.04496 mm^ GRID BOX: Maenifi cation: 20,000 GRID ID: Accelerating Voltage; 100 KeV # Grid Openings: 4 Analysis Date: 5/5/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID ot Structure N or y EDS (NofiadD No Coord No F B c M >^05Ti <5p i>=5|j Chrys Amphibcla Ncftasb AflWig/ND Elements)

J? -3

1 1

Struc! = > 0.5n >5:1 Aspect Ratio Grid acceptance: ' Positive ciiffraclion pattern properties conforming to <50% unriiasolyed filter, overlapped or folded Totals latjofatory identification criteria observed <10% partculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M I >5(j ^/<EDSsperatum canfomiing to laboratory holes or cpaque areas identification criteria observed Chiysotile amphiboles Amphibole F = Single Fiber Amosite I S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections! Anthophyllite Non-Asbestos Tremolite M = Matrix Actinotite Non-Identified NSD = No Structures Detected

CITY_21MC100_002901668

NYC-WTC_000228776