DEP memo on vehicle release from Ground Zero, January 24,

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iD If) FBlSampIeResulls.xls DUST and SILICA in 1 6) ID t in tk 1 ______________________________________________________________ ® ISAMPLE RESULTS - RESPIRABLE DUST and CRYSTALLINE SILICA a H O

SAMPLE AMBIENT/ ANALYSIS ' » \D DATE LOCATION NUMBER PERSONAL METHOD USED METHOD LIMIT OF DETECTION SAMPLE RESULT LAB 10 tn h QO xr 10/17/01 BLANK 137026 BLANK NIOSH0600Z7500 Dust 0.05 mg <0.05 mg_________ Galson (0 <0 Silica 0.01 mg Quartz <0.01 mg Galson tM OJ o ! Cristobalite <0.01 mg Galson N OJ Tridymite <0.01 mg Galson

10C4/01 Landfill 137010 Personal NIOSH 0600/7500 Dust 0.05 mg 0.060 mg_________ Galson Silica 0.01 mg Quartz <0.01 mg Galson Cristobalite <0.01 mg Galson Tridymite <0.01 mg Galson

10/24/01-^ BLANK 17018 BLANK NIOSH 0600/7500 Dust 0.05 mg <0.05 mg_________ Galson Silica 0.01 mg Quartz <0.01 mg Galson I Cristobalite <0.01 mg Galson . in Tridymite <0,01 mg Galson xr n c- 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 Galson Cristobalite <0.01 mg Galson I z I Tridymite <0.01 mg Galson 0) 3 e Q. lU 10/31/01 Landfill 137029 Personal NIOSH 0600/7500 Oust 0.05 mg [0.0S4 mg ______ Galson 0 tn Q a Silica 0.01 mg Quartz <0.01 mg Galson 0) O Cristobalite <0.01 mg Galson ? (Q Tridymite <0.01 mg Galson

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I ' I? Q-o I o ~ I n nj m N I £o z § 1/10/02 34 of 35 12:57 PM o z