NYC-WTC_000231431

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet sample area analyzed e Client Name: Riverpoint, Inc. Job#: 201103187 Volume (liters): 700.0 Lab Sample #: 14 Filter Type / Filter Area: MCE 385 mm2 Client Sample #: 081016 Grid Opening Size: 0.01000 ■ 'I Received: 10/23/2001 07:30:00 Area Examined: 0.10000 mm2 Date Analyzed: 10/24/2001 Magnification: 20,000 Scope #: ^^^^^^elerating Voltage: 100 KeV rn Analysis Perfonned by: Mikhail Gruzman n Location Grid Opening Fiber Length gM Width Fiber Type Morphology EDS Orient. SAED Photo gM D10-B4/6 1 NSD D10-C4/6 2 NSD U D10-E4/6 3 NSD U D10-F4/4 4 NSD U D10-G4/6 5 NSD U D10-H4/6 6 NSD u D10-K4/6 7 NSD u E6-F4/4 8 NSD u E6-G4/4 9 NSD u E6-H4/4 10 NSD u

u

j NSD: No Asbestos Structures Detected -J Comments Modified TEM Level II reports only asbestos fibers >=5 microns in length Structure Density Concentration i (str/mm2) (str/cc air) Grid Evaluation U Total Grid Openings: 10 Chrysotile Asbestos Structures: 0 <10 <0.0055 13 Grid Openings Covered > 50% 0 <10 <0.0055 3 Intact Grid Opening > 50% Amphibole Asbestos Structures: Asbestos Structures >=5 microns: 0 <10 <0.0055 3 Undissolved Filter <10% Total Non-Asbestos Structures: 13 Folded Replica < 50% Total Asbestos Structures: 0 <10 <0.0055 13 Filter Loading < 10%) Analytical Sensitivity: 10 0-0055 13 Particulate Even

CITY_21MC100_008880389

NYC-WTC_000231573