NYC-WTC_000176066
Laboratory results for silica content in samples collected under the Residential Sampling project in December 2001.
9 shared non-person entities · similarity 0.983
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Silica analysis report revision, Residential Sampling Project, Dec 2001
Machine-extracted title · confidence 85%Revised laboratory report detailing silica analysis results for residential sampling conducted in December 2001.
NYC-WTC_000176077–000176081Page image
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NYC 9/11 Public Portal Document
107 Haddon Avenue 4 ► EMSL Analytical, Inc.- Westmont, NJ. 0SJ08 (856) 858^800 ▼ 12Z7/01 Attention: V.S.EPA QQ Finaneial Services Division 1200 Pennsylvania Avenue NWMaildiop2734R Washington, DC, 20460
Project: Residential Sampling Ref. Number. 360100635 Revision 120201
Crystalline Particle Analysis Performed by X-Ray Diffraction (XRD) Silica Analysis by Method NIOSH 7500 Nuisance Dust Airborne Analyte Siimptc Sample Analyte Analyte "Zo Analytical Weight Ci»nt Waiglil Cone. .Analyte Sensitivity Sample ID Identification Particle ID Volume (m:) (inE/inb (me) (nisfnt’) (ing/m’)
[RIIF-RI-IO Quartz !220 D.028 0.0230 <0.CC4 <AS N/A 0.0033 Cristobalite <0.012 <AS 0.0154 Tridymite WA N/A WA Calcite <0.004 <AS 0.0051 Portland/ Lime <0.02 <AS 0,0256 Gypsum <0.004 <AS 0,0051 Mica '0,011 <AS 0.0141 Halite <0,006 <AS 0.0077 Fibmus Glass N/A N/A WA
(R1RF.R2-10 Quartz 7S7 N/A N/A <0.004 <AS N/A 0.0052 Cristo ballle <0.012 <AS 0.0154 Tridymite M(A N/A NfA Calche <0.004 sAS 0.0051 Portlord/ Lime <0.02 <AS 0.0258 Gypsum <0.004 <AS 0.O0S1 Mica <0.011 <AS 0.0141 Halite <0.006 <AS 0.0077 Fibrous Glass N.'A N/A N/A
[R]TF-R2-1O Quartz 1224 0.270 0220S <0.004 <AS WA 0'.0033 Cristobalite <0.012 <AS 0.0154 T ridymile N/A N/A N/A Calcile <0.004 <AS O.00S1 Portland/ Limo <0.02 <AS 0.0256 Gypsum- <0:004 <AS 0,0051 Mica <0.01'1 <AS 0.0141 Halite <0.006 <AS 0.0077 Fibrous Glass N/A N/A WA
John Newlon 28 Nov'imber, 01 .Anaij-st Date of Analysis
Di.sclnuncr: The laboratory'can only verify Ihcooncsotration of silica,'on the filler and not OieRnal concentration, due to data obtiincd by non-laboraiorypenionncl. In tbe absenee nfs.bulk dust sample, the specific form of crystllline silica can not be determined. lienee, dplui-quajiz, Ow most prevalent form of eryaalliite silica, will bo a.ssiuncd. (bin te slaied value The lowest, reportable value is equivalml ta the /Uialtlical SensiUtety whicli is calculated from die lowest reproducible conccntrab'on ofsilica detectable by tlic iitstrliment. ADTA Accredit'd - Ubonrtory 11) 4100192
CONFIDENTIAL, CITY_21MC1OO_OO3434OO9
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176079
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Laboratory findings on silica concentrations from residential sampling projects submitted to the EPA in late December 2001.
Similarity score 0.985 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000176089
Laboratory findings on silica concentrations from residential sampling projects submitted to the EPA in late December 2001.
Similarity score 0.985 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000176066
Laboratory results for silica content in samples collected under the Residential Sampling project in December 2001.
Similarity score 0.983 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000176066
Laboratory results for silica content in samples collected under the Residential Sampling project in December 2001.
Similarity score 0.983 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000176066
Laboratory results for silica content in samples collected under the Residential Sampling project in December 2001.
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