NYC 9/11 Public Portal Document
Unit 4D Results
Mineral: alpha-Quartz
Post 1 st cleaning - Test 2A
Sample ID Matrix Detected Result Comment
9094-A-4D-017 Air ND < 0.004 mg/m3
9094-A-4D-018 Air ND < 0.004 mg/m3
Mineral: Calcite
Post 1 st cleaning - Test 2A
Sample ID Matrix Detected Result Comment
9094-A-4D-017 Air ND < 0.016 mg/m3
9094-A-4D-018 Air ND < 0.016 mg/m3
Mineral: Cristobalite
Post 1st cleaning - Test 2A
Sample ID Matrix Detected Result Comment
9094-A-4D-017 Air ND < 0.016 mg/m3
9094-A-4D-018 Air ND < 0.016 mg/m3
Mineral: Tridymite
Post 1st cleaning - Test 2A
Sample ID Matrix Detected Result Comment
9094-A-4D-017 Air ND < 0.016 mg/m3
9094-A-4D-018 Air ND < 0.016 mg/m3
MMVF
Before cleaning
Sample ID Matrix Detected Result Comment
9094-W-4D-002 Wipe 400.62 S/cm2
9094-W-4D-003 Wipe 2174.79 S/cm2
9094-W-4D-004 Wipe 286.16 S/cm2
9094-W-4D-005 Wipe 457.85 S/cm2
Post 1st cleaning - Test 2A
Sample ID Matrix Detected Result Comment
9094-A-4D-012 Air 1.398 S/L
9094-A-4D-013 Air 9.553 S/L
9094-A-4D-014 Air 2.124 S/L
9094-W-4D-019 Wipe 57.23 S/cm2
9094-W-4D-020 Wipe 171.69 S/cm2
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NYC-WTC_000145280
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