NYC-WTC_000219650

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1816 Lab Group #: 7094 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample #: 11 Area Examined: 0.04496 mm*

GREP BOX; Magnification: 20,000 GREP fl); Accelerating Voltage; 100 KeV # Grid Openings; 4 Analysis Date: 3/16/02

Analysis Performed By: MARKPEYSAKHOV

Structure Structure Type Lengtf) ID of Stnicture Norv EDS i—22__ No >=05 p Amphibote Nonasp AflibigZNO (Nonadb i j [ F S C M >=5p Chrys Elements) I No J Coord <5u

Struct = > 0.5n > 5:1 Aspect Ratio Grid acceptance: V= Positive diffracton pattern properties conforming to "^0% undssoived filter, overtef^ or folded Totals - latXMatory dentiScation criteria observed <10% partcuiate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >5p EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile j AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) I Anthophyllite Non-Asbestos T remolite — M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002881417

NYC-WTC_000219650