Asbestos air sampling data log, World Trade Center, Apr 2002

NYC 9/11 Public Portal Document

ATC/^& Air Sampling Dato For 04/05/02 to 04/12/02

WTC Recovery Project

Begin Shift Adj. % Shift Adj Sample ID Zone Job Description Time End Time Worker Respirator Analyte Results oel’ OEL’^ % oel’ oel’

WTC-BC>CJ-M- Area-center of ramp to 4/5/2002 4/5/2002 3:25:00 <0.0029 mg/cu 020405-02 BO depression 7:35:00 AM PM Area N/A Antimony m 0.5 0.024

WTC-BO,CJ-M- Area-center cf ramp to 4/5/2002 4/5/2002 3:25:00 <0.00062 020405-02 BO depression 7:35:00 AM PM Area N/A Arsenic mg/cu m 0.01 0.0048

WTC-BO-CJ-M- Area-center of ramp to 4/5/2002 4/5/2002 3:25:00 <0.000025 020405-02 BO depression 7:35:00 AM PM Area N/A Cadmium mg/cu m 0.002 0.001

WTC-BO-CJ-M- Area-center of ramp to 4/5/2002 4/5/2002 3:25:00 <0.00043 020405-02 BO depression 7:35:00 AM PM Area N/A Chromium mg/cu m OS 0.024

WTC-BO-CJ-M- Area-center of ramp to 4/5/2002 4/5/2002 3:25:00 <0.00029 020405-02 BO depression 7:35:00 AM PM Area N/A Cobalt mg/cu m 0.02 0.01

WTC-BO-CJ-M- Atea-oenter of ramp to 4/5/2002 4^/2002 3:25:00 <0.00013 020405-02 BO depression 7:35:00 AM PM Area N/A Nickel mg/cu m 1.5 0.72

wtc-bcw:j-m- Area-center of ramp to 4/5/2002 4/5/2002 3:25:00 <0.0023 mg/ou 020405-02 BO depression 7:35:00 AM PM Area N/A Selenium m 0.2 0.134

WTC-BO-CJ-M- Area-center of ramp to 4/5/2002 4^/2002 3:25:00 <0.0023 mg/cu 020405-02 BO depression 7:35:00 AM PM Area N/A Thallium m 0.1 0.048

VVTC-BO-CJ-M- Area-center of tamp to 4/5/2002 4/5/2002 3:25:00 <0.0025 mg/cu 020405-02 BO depression 7:35:00 AM PM Area N/A Tin m 2 0.96

vyrc-BO-cj-M- Area-center of tamp to 4/5/2002 4/5/2002 3:25:00 <0.00040 020405-02 BO depression 7:35:00 AM PM Area N/A Vanadium mg/cu m 0.05 0.05 WTC-BOCkJ-M- Area-top of ramp to 4/6/2002 4/6/2002 3:02:00 020406-03 BO depression center 7:50:00 AM PM Area N/A Total Dust 0.20 mg/cu m 10 10 1.97% 1.97% WrC-BO-CJ-M- Area-top of ramp to 4/6/2002 4/6/2002 3:02:00 0.0000073 020406-03 BO depression center 7:50:00 AM PM Area N/A Beryllium mg/cu m 0.002 0.001 0.36% 0.73% WTC-BO-CJ-M- Area-top of ramp to 4/6/2002 4/6/2002 3:02:00 020406-03 BO depression center 7:50:00 AM PM Area N/A Calcium 0.012 mg/cu m 2 2 0.62% 0.62% WTC-BOCJ-M- Area-top of ramp to 4/642002 4/6/2002 3:02:00 0.0047 mg/cu 020406-03 BO depression center , 7:50:00 AM PM Area N/A Iron m S 2.4 0.09% 0.19% O WTC-BOCJ-M- Area-top of ramp to 4/6/2002 4/6/2002 3:02:00 0.000078 H 020406-03 BO depression center 7:50:00 AM PM Area N/A Manganese mg/cu m 0.2 0.134 0.04% 0.06% lAfTC-BCXU-M- Area-top of tamp to 4/6/2002 4/6/2002 3:02:00 0.0010 mg/cu 020406-03 BO depression center 7:50:00 AM PM Area N/A Zinc m 5 3.4 0.02% 0.03% s WTC-BC>CJ-M- Area-top of ramp to 4/6/2002 4/6/2002 3:02:00 0.0013 mg/cu o 020406-03 BO depression center 7:50:00 AM PM Area N/A Magnesium m 10 6.7 0.01% 0.02% o o I o ' OEL=Occupational Exposure Limit, the lower of the OSHA PEL or ACGIH TLV. o to ’ Shift Adj. OEL=OEL lowered when appropriate to reflect 12 hour x 7 day a week shifts. ’ When the result is not quantifiable a % OEL is not calculated. Page?

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NYC-WTC_000186565