NYC 9/11 Public Portal Document
Unit 2B Results
Mineral: Tridymite
Post 1st cleaning - Test 3A
Sample ID Matrix Detected Result Comment
9094-A-2B-013 Air ND < 0.016 mg/m3
9094-A-2B-014 Air ND < 0.016 mg/m3
MMVF
Before cleaning
Sample ID Matrix Detected Result Comment
9094-W-2B-002 Wipe 629.55 S/cm2
9094-W-2B-003 Wipe 13163.22 S/cm2
9094-W.2B-004 Wipe 400.62 S/cm2
Post 1st cleaning - Test 3A
Sample ID Matrix Detected Result Comment
9094-A-2B-008 Air 6.645 S/L
9094-A-2B-009 Air 1.685 sn.
9094-A-2B-010 Air 3.922 S/L
9094-W-2B-015 Wipe ND < 57.23 S/cm2
9094-W-2B-016 Wipe 114.46 S/cm2
9094-W-2B-017 Wipe 228.93 S/cm2
9094-W-2B-018 Wipe 171.69 S/cm2
9094-W-2B-019 Wipe 171.69 S/cm2
PAH TEF (ND=1/2)
Before cleaning
Sample ID Matrix Detected Result Comment
9094-W-2B-002 Wipe U 290 ug/m2
9094-W-2B-003 Wipe U 290 ug/m2
9094-W-2B-004 Wipe U 290 ug/m2
Post 1st cleaning - Test 3A
Sample ID Matrix Detected Result Comment
9094-W-2B-016 Wipe U 290 ug/m2
9094-W-2B-017 Wipe U 290 ug/m2
9094-W-2B-018 Wipe U 290 ug/nn2
9094-W-2B-019 Wipe U 290 ug/m2
Page 4 of 4
NYC-WTC_000145238
OCR can misread numbers and units. Confirm readings against the page image before using them.