NYC 9/11 Public Portal Document
Unit 4B Results
Mineral: alpha-Quartz
Post 1st cleaning - Test 2B
Sample ID Matrix Detected Result Comment
9094-A-4B-011 Air ND < 0.004 mg/m3
9094-A-4B-012 Air ND < 0.004 mg/m3
Mineral: Calcite
Post 1st cleaning - Test 2B
Sample ID Matrix Detected Result Comment
9094-A-4B-011 Air ND < 0.016 mg/m3
9094-A-4B-012 Air ND < 0.017 mg/m3
Mineral: Cristobalite
Post 1st cleaning - Test 2B
Sample ID Matrix Detected Result Comment
9094-A-4B-011 Air ND < 0.016 mg/m3
9094-A-4B-012 Air ND < 0.017 mg/m3
Mineral: Tridymite
Post 1st cleaning - Test 2B
Sample ID Matrix Detected Result Comment
9094-A-4B-011 Air ND. < 0.016 mg/m3
9094-A-4B-012 Air ND < 0.017 mg/m3
MMVF
Before cleaning
Sample ID Matrix Detected Result Comment
9094-W-4B-002 Wipe 286.16 S/cm2
9094-W-4B-003 Wipe 629.55 S/cm2
9094-W-4B-004 Wipe 400.62 S/cm2
9094-W-4B-005 Wipe 686.78 S/cm2
Post 1st cleaning - Test 2B
Sample ID Matrix Detected Result Comment
9094-A-4B-006 Air 0.658 S/L
9094-A-4B-007 Air 1.664 S/L
9094-A-4B-008 Air 1.096 S/L
9094-W-4B-013 Wipe 286.16 S/cm2
9094-W-4B-014 Wipe 228.93 S/cm2
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NYC-WTC_000145270
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