NYC-WTC_000203472

NYC 9/11 Public Portal Document ^■7

TEMAsbestosfairlCountSh^ Client Name: NYC BOE Volume (liters): 19228 Lab Group #: 9090 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0 04496 mm’ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/11/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure Nor\ EDS No (Nonadb F B C M >=05 p >=5|J Chrys Amphibole Nonasb Ambig/ND

3P- No i Coord <5m Elements)

if 5 if a 9^

Photo No (from 1 in 5 asbestos containing samples) Gnd acceptance Struct = > 0 5p >51 Aspect Ratio <50% undissolved filter, overlapped or folded Totals V= Positive diffraction pattern properties conforming to <10% paniculate coverage >50% coverage ate laboratory identificabon criteria observed least 20 unfolded or overlapped grid squares <5% F BjC M >5u holes or opaque areas v= EDS spectrum conforming to laboratory Chrysotile identification cnteria observed : AMPHIBOLES Amphibole F = Single Fiber Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart ) Crocidolite Ambiguous C = Cluster (>3 Intersections) ' Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified ' Actinolite NSD = No Structures Detected

CITY_21MC100_003058142

NYC-WTC_000203472