NYC-WTC_000231431

NYC 9/11 Public Portal Document ”1

u TEM Asbestos (air) Count Sheet sample area analyzed ff Li Client Name: Riverpoint, Inc, Job#: 201103187 Volume (liters): 652.5 Lab Sample #: 26 Filter Type / Filter Area: MCE 385 mm2 Client Sample #: 201020 Grid Opening Size: 0.01000 Received: 10/23/2001 07:30:00 Area Examined: 0.10000 mm2 Date Analyzed: 10/24/2001 Magnification: 20,000 Scope #: Accelerating Voltage: 100 KeV Analysis Performed by: Lance Tuckruskye Location Grid Length Width Opening Fiber gM Fiber Type Morphology EDS Orient. SAED Photo mm D4^C4/1 1 NSD a D4-E4/1 2 NSD u D4-F4/1 3 NSD u D4-G4/1 4 NSD u D4-H4/1 5 NSD u D5-C5/1 6 NSD u D5-E5/1 7 NSD u D5-F5/1 8 NSD u D5-G5/1 9 NSD u D5-H5/1 10 NSD u

D D

n i NSD: No Asbestos Structures Detected J Comments Structure Density Concentration Grid Evaluation U Total Grid Openings: Chrysotile Asbestos Structures: 10 0 (str/mm2) <10 (str/cc air) <0.0059 13 Grid Openings Covered > 50% Amphibole Asbestos Structures: 0 <10 <0.0059 3 Intact Grid Opening >50% Asbestos Structures >=5 microns: 0 <10 <0.0059 13 Undissolved Filter < 10% Total Non-Asbestos Structures: 13 Folded Replica < 50% Total Asbestos Structures: 0 <10 <0.0059 13 Filter Loading <10% I Analytical Sensitivity: 10 0.0059 13 Particulate Even

CITY_21MC100_008880401

NYC-WTC_000231585