NYC 9/11 Public Portal Document
107 ffaddon Avenue
EMSU EMSL Analytical, Inc.- Wesitmint, NJ. O8IO8
<1
(856) 858-4800
12/4/01
AttcDtion; U.S.EPA
HQ Financial Service*; Division
1200 Pennsylvania Avenue
NW Maildrop 2734R
Washington, DC. 20460
Project: Residential Sampling
Ret Number; 360100623
Silica Analysis Perfomoed by Method NIOSH 7500
Crystalline Particle Analysis Performed by
X-Ray Diffraction (XRD)_________
Nuisance Dust Airborne Particulate
Sum pie Sample .Anilytu Aoalyfe % Aualytical
Weight Cone. Weight Cone. Analyte Senaitivit}'
Sample ID JdOBtrCcation Analyte ID Volume (mis) tmg/m’) (mg/ni') (mg/m')
fJL)
Quart 0 0.000 N/A <0.004 N/A N/A N/A
[RjeRF-A.<l
Cristobalite <0.012 N/A N/A
Tridymite M/A N/A N/A
Calc/le <0.004 N/A N/A
Portland/ Lime <0.020 N/A N/A
Gypsum <0.004 N/A N/A
Mica <0.011 N/A N/A
Halite <0,006 N/A N/A
Fibrous Glass NO N/A N/A
[RlBRF-B-1 Quartz 0 0.000 N/A e£>.004 N/A N/A N/A
Cristobalite <0.012 N/A N/A
TriOyiTlite N/A N/A N/A
Calcite <0.0tM N/A N/A
Portland/ Lime <0.020 N/A N/A
Gypsum <0.004 N/A N/A
Mica <0.011 N/A N/A
Halite <0.006 N/A N/A
Fibrous Class ND N/A N/A
iRjeiF-A-4 Quart 0 0.000 N/A <0.004 N/A N/A N/A
CrisiDhalite <0.012 NIA N/A
Tridymite WA NIA N/A
Calcite <0.004 N/A N/A
Portland/ Lime <0.020 N/A N/A
Gypsum <0.004 N/A N/A
Mica <0.011 N/A N/A
Halite <0.005 N/A N/A
Fibrous Glass ND N/A N/A
Fibmus QiDiS FQSfjIti OK in noQm pcreubls M
John Newton 4 December, 2001
Analyst Date of Analysis
DjEcIaimcT: The laboratory ram only verify the concerrtartioas ofanalytris on the filler apd not the final cont’enttations due to data obtained by
non-laltoratoty perMtine). In tire absence of a balk dust sample, the specific fortnof crystalline silica can not be determined.
Hrmec. alpha-quartz, the most prevalent Corm of crystalline silica, wll be assumed. = Less than the stated value
The lowest repomble value Ls equivalent to the AoalyrietU Sensitivity which is calculated from the lowest reproducible concentration of silica detectable by the insmjtnent,
AJH A Accredited - Laboratory ID # 100192
CONFIDENTIAL, CITY_21MC100_003433962
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176070
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