NYC-WTC_000229157

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume flitersl; 1800 Lab Group #: 7931 Filter Type / Filter Area; MCE 385 Lab Sample #: 7 Grid Opening Size; 0.01124

Client Sample #: 09 Area Examined: 0.04496 mm^ GRIP BOX: Magnificatiop: 20,000 GRID ID: Accelerating Voltage; 100 KeV # Grid Openings: 4 Analysis Date: 6/1/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length IO of Sbuetura N or v EDS No >=05 p Aniphiwb (Honadb F B C M Chrys Nonajb No Coord <5p Elements)

■7^51'2. 7*7X6

Struct = > 0.5u > 5:1 Aspect Ratio Gridaoceptance: ’/■ Poaivediffradion pattern properties oonfonning to <50% undisulved filter, oveitapped or totded Totals laboratory IdentHcation criteria observed <10% particulate coverage >50% coverage ale least 20 unfolded or oveftapped grid squares <5% F B C M >5ij EOS spectrum confotmirig to laboratory holes or opaque areas identitication criteria observed Chrysotile AMPHIBOLES Amphibole F= Stifle Fitjer Arrtcrsrte 9 = Bundle (<3 fibers <1 Uber diameter apart Crocidolite Ambiguous C = Cluster (>3 .ntersections) Anthophyllite Non-Asbestos Tremolite M - Matrix Actinolite Non-Identified NSO = No Structures Detected

CITY_21MC100_002902311

NYC-WTC_000229157