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← Document results/DEP Box 33/1 NORTH END AVENUE Block: 16 Lot: 225 BIN: 1085502 4 River Terrace, 60 Vesey Street
Document / 15 pages

Indoor environmental quality survey fax, Dec 13, 2001

Machine-extracted title · confidence 100%

Fax cover sheet from Ambient Group dated December 13, 2001 regarding indoor environmental quality surveys.

NYC-WTC_000097632–000097646

Folder label: “1 NORTH END AVENUE Block: 16 Lot: 225 BIN: 1085502 4 River Terrace, 60 Vesey Street

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NYC 9/11 Public Portal Document

DEC-13-01 THU 06:58 PM AMBIENT GROUP INC FAX NO, 212 768 1540 P. 11

ambient labs inc. 159 West 25th Street New York, NY 10001 ELAP #10865 REPORT OF AIR SAMPLE ANALYSIS BY TRANSMISSION ELECTRON MICROSCOPY Project II]: 0211338 Client Name: Cushman & Wakefield, Inc Project Name : One North End Avenue Field ID : 64454 Sample ID: AEM990 11887 '7 fk Date Received : 1219101 Sample Description : c Rovr' S G1

Filter Composition ; Porosity: 0.45 micron Flit Lot # : Filter Diameter: 25 mm Effective Filter Area: 385 mrrf Air Volume: 1890 Itr Total Filter Area Analyzed : 0.0450 mm2 # Grid Openings; 5 Avg Grid Opening Area :0.0090 mm~ Grid Lot #: 4083 Analytical Sensitivity : 0,0045 asbestos -struct/cm3

Number of Asbestos Number of Structure Types: Structures : LENGTH FIBER Chrysotile : 0 0.5 urn <L < 5 um CLUSTER MATRIX BUNDLE Amphibole: 0 L > 5 urn

A: TOTAL CHRYSOTILE STRUCTURE CONCENTRATION: LT B: TOTAL AMPHIBOLE STUCTURE ANYL SENS s~cture/c p TANYLSENS CONCENTRATION: C: TOTAL ASBESTOS STUCTURE (A+B) ture/crr CONCENTRATION . LT ANYL SENS structure/crrp AS IN AIR LT ANYL SENS structurelcrrP ON FILTER LT ANYL SENS structure/mm 2 ev a-ro9rapn Iu # for Reported Structures:

Reported for Ambient Labs Inc. by:

INNA NURIK Analysis Date: 1219/01 Environmental Analyst - overloaded, NA - Analyzed

12/13/01 THU 19:00 [T%/R% NO 8798]

NYC-WTC 000097641

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NYC-WTC_000097641Source: NYC Law Department, mirrored locally

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