Memo on vehicle release from Ground Zero, Jan 2002

z JBS=^ I i .1 -< o co 9

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I 'i § FBISampleResuIfs.xls OUST and SILICA s CT o‘

■u 0. o 'o o o tn o O) I I 1- 8 [SAMPLE RESULTS - RESPIRABLE DUST and CRYSTALLINE SIUCA a. SAMPLE AMBIENT/ ANALYSIS I & o o o c 3 N) ) ) ) B DATE

10/17/01 LOCATION

BLANK NUMBER

137026 PERSONAL

BLANK METHOD USED

NIOSH 0600/7500 METHOD LIMrr OF DETECTION SAMPLE RESULT LAS CD 3

) ) Pi Dust O.OS mg iSiBea 0.01 mg <0.05 mg________ Quartz <0.01 mg Galson Galson 4 Cri5tobalife<00^1 mg Galson 4 Tridymite <0.01 mg Galson

1W24/01 Landfill 137010 Personal NIOSH 0600/7500 Dust O.OS mg 0.060 mg________ Silica 0.01 mg Quartz <0.01 mg Galson Cristobalite <0.01 mg Tridymite <0.01 mg Galson

10g<W1^ BLANK 17018 BLANK NIOSH 0600/7500 Dust 0.05 mg <0.05 mg________ Galson ~~ww Silica O.Ol mg Quartz <0.01 mg Galson Cristobalite <0.01 mg Galson Tridymite <0.01 mg Galson

10/31/01 BLANK 137028 BLANK NIOSH 0600/7500 Dust 0.05 mg 0.103 mg Galson Silica 0.01 mg Quartz <0.01 mg Gabon Cristobalite <0.01 mg Gatson Tridymite <0.01 mg Galson 5 3 10/31/01 Landfill 137029 Personal NIOSH 0600/7500 Dust O.OS mg 0.054 mg Galson 0 Silica 0.01 mg Quartz <0.01 mg Galson 1 Cristobalite <0.01 mg Galson t 5 Tridymite <0.01 mg Galson J

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'■t 1/10/02 34 of 35 12:57 PM