NYC-WTC_000228553

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 । Lab Group #: 7448 Filter Type / Filter Area: MCE 38? mm- Lab Sample Grid Opening Size: 0 01124

Client Sample #: 09 ■Area Examined: 0 04496 m

GRID BOX: Magnification: 20.000 GRIDED: A c c e 1 e rating^V’o 11 a B e: too KeV # Grid Openings: 4 Analysis Date: 4/17/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure \ or \ •Noradb No F B C M >=05 u >=5p Ctirys Amphibole Nonasb AmbigyND ; No Coord <5m Elements) f i

ZH /®F-zz

Struct => O.Sp > 5; 1 Aspect Ratio Grid acceptance: >/= Positive diffracfion pattern properties conforming to undissolved filter, overtopped or folded Tot^ laboratory tdontificatoi criteria observed An <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C i M I V = EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle {<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 intersections) Anthophyllite Non-Asbestos Tremolite M = Matnx Actinolite Non-ldentified NSD = No Siruciures Detected

CITY_21MC100_002900985

NYC-WTC_000228553