NYC-WTC_000228492

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7351 Filter Type / Filter Area: MCE 385 mm-’ Lab Sample #: 14 Grid Opening Size: 0.01124

Client Sample #: 16 Area Examined: 0.04496

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/7/02

Analysis Performed By: ^7^ MICHAEL GORYCKI

GO. Structure Structure Type Length ID of Structure Nor EDS No 'Nonadb F B C M >=05 M >=5p Chrys Atnphtoole Nonasb Ainbig/ND No Coord <5p Eiements)

aSZ 5Y \} // tf ¥

Strucr= >0.5u > 5:1 Aspect Ratio Grid acceptance: 'I= Positive diffraction paltem properties conforming to *^0% undissolved filter, overlapped or folded Totals criteria observed idantificatiQn criteria laboratorv id^nttfication laboratory observed <10% particulate coverage >50% coverage ale

EDS spectrum conforming to laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% holes or opaque areas Chrysotile M2 C I M i ^5 m

! amphiboles Amphibole ! F = Single Fiber ! I Amosite B = Bundle (<3 fibers <1 liber diameter apart Crocidolite Ambiguous C = Cluster >3 Intersections) Anthophyllite Non-Asbestos Tremolite J------i M = Matrix Actinolite Non-ldentified i ! NSO = No Structures Detected

CITY_21MC100_002900760

NYC-WTC_000228492