Certificate of Laboratory Analysis for lead air samples, Sept 2001

NYC 9/11 Public Portal Document

WTC-Pb(M,./-#4/#7

Rpt# Client ET KNV. Bef* 34906 Sample# Pb (mg/L) (nig/L) Pt) (mg/L) Dil Air (Pb) Volume Volume Result Final Result Blunk (ml) Result (pg) (L) (m3) (pg/m3) (pg/m?) WTC 092301-0 IPb 0.0245 0.0227 0 15 0.00 882 0.882 0.00 <0.5 WTC 69236i-02Pb 0.0245 0.0394 0.0149 1.5 6.22 865 0.865 0.26 <0.5 WTC 092301-03Pb 0.0245 0.2432 0.2187 15 3.28 677 0.677 4.84 4.8 WTC 092301-04Pb 0.0245 0.6453 0.6208 15 9.31 636 0.636 14.65 15 W WTC 09236i-65Pb 0.024.5 0.0852 0.0607 15 0.91 600 0.600 1.52 1.5 G to /SiSrvio 1 !z- G Ba Ca Cd Co M Sample# Ag AJ _ _ As Be Bi O (pg/m3) (p^m3) (pg/m3) (pg/m3) H (pg/m3) (lig/m3) (Mg/m3) (pg/m3) (pg/m3) H WTC (192301-04 <0.5 <0.5 <0.5 < 6.5 <0.5 51 < 0.5 <0.5 O Cr Fe K Mg Mn Pb 3 (pg/m3) (pg/m3j (pg/m3) (pg/m3) (pg/m3) (pg/m3) (pg/m3) (pg/m3) (pg/m3) 3 O 0.75 22 39 2.3 7.5 <0.5 <0.5 14 H M Sb T1 V Zn O o H o (pg/m3) (pg/m3) (pg/m3) (pg/m3) (pg/m3) 3 < 3 < 0.5 <6.5 <0.5 4.5 34 M a o M 3 Sample# Ag Al As Ba Be Bi _.Ca Cd Co a H (pg/m3) (pg/m3) (pg/mi) (pg/m3) (pg/m3) (pg/m3) (pg/m3) (pg/m3) M (pg/m3) WTC 092201-07 < 0.5 < 0.5 <0.5 <0.5 <0.5 < 0.5 <6.5 s Cr K . ..^8 Mn Na'"" " Ni Pb o (pg/m3) (pg/m3}- (Mg/m3) (pg/m3) (pg/m3) (Mg/m3) (pg/m3) (pg/m3) (pg/m3) to 0.81 10 1.1 61 <0.5 260 < 0.5 5.1 V ■’ Sb Se” T' Zn w M (pg/m3) (Pg/m3) (pg/m3) (pg/m3) (pg/m3) 3 <0.5” H < 6.5 <0.5 0.56 120 to o o I" co o H o cn to Q O s O IO lO ■'J o o LD I o o

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NYC-WTC_000174990