NYC 9/11 Public Portal Document
Unit 4D Results
Lead
Before cleaning
Sample ID Matrix Detected Result Comment
9094-M-4D-006 Microvac 83.5 ug/fl2
9094-M-4D-007 Microvac 66 ug/ft2
9094-M-4D-008 Microvac 26.2 ug/ft2
9094-M-4D-009 Microvac 39.9 ug/ft2
9094-M-4D-010 Microvac 78.2 ug/ft2
9094-M-4D-011 Microvac 72.1 ug/ft2
9094-W-4D-002 Wipe ND < 4.65 ug/ft2
9094-W-4D-003 Wipe 169 ug/ft2
9094-W-4D-004 Wipe 17.4 ug/ft2
9094-W-4D-005 Wipe 17.1 ug/ft2
Post 1st cleaning - Test 2A
Sample ID Matrix Detected Result Comment
9094-A-4D-015 Air 0.146 ug/m3 Lab blank contamination
(Validation = R).
9094-A-4D-016 Air 0.137 ug/m3 Lab blank contamination
(Validation = R).
9094-M-4D-024 Microvac 2.4 ug/ft2
9094-M-4D-025 Microvac ND < 2.32 ug/ft2
9094-M-4D-026 Microvac ND < 2.32 ug/ft2
9094-M-4D-027 Microvac ND < 2.32 ug/ft2
9094-M-4D-028 Microvac ND < 2.32 ug/ft2
9094-M-4D-029 Microvac ND < 2.32 ug/ft2
9094-W-4D-020 Wipe 20.4 ug/ft2 Lab blank contamination
(Validation = R).
9094-W-4D-021 Wipe 66 ug/ft2 Lab blank contamination
(Validation = R).
9094-W-4D-022 Wipe 10.6 ug/ft2 Lab blank contamination
(Validation = R).
9094-W-4D-023 Wipe 15.6 ug/ft2 Lab blank contamination
(Validation = R).
Post 2nd cleaning - Test 2A
Sample ID Matrix Detected Result Comment
9094-A-4D-030 Air 0.055 ug/m3
9094-W-4D-031 Wipe ND < 4.65 ug/ft2
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