NYC-WTC_000209185

NYC 9/11 Public Portal Document

TOTAL DUST Lab; Galson Laboratories Sample Duration Volume Total Dust Analytical Sampling Date Type Sample Location Additional Comments Number (minutes) (m^) (mg/m^) Method

Sample Collected from car windshield 9/20/2001 B-2 Bulk Murrary and West n/a n/a n/a n/a at Murrary and West

Inside Non- 1st Section of Liberty 9/20/2001 NY-05 128 0.2854 3.2 NIOSH 0500 Collected on a very rainy day Enclosed Cab and Vesey

Inside Non- 9/20/2001 NY-06 West Street 202 0.4343 0.44 NIOSH 0500 Collected on a very rainy day Enclosed Cab

Inside Non- 9/20/2001 NY-07 1 Liberty Plaza 194 0.4229 <0.4 NIOSH 0500 Collected on a very rainy day Enclosed Cab

Inside Non- 9/20/2001 NY-08 Near Firehouse 10 186 0.4036 1.5 NIOSH 0500 Collected on a very rainy day Enclosed Cab

Inside Non- Pit area near bldg 9/20/2001 NY-12 94 0.2049 <0.7 NIOSH 0500 Collected on a very rainy day Enclosed Cab closest to walkway

Inside Non- 9/21/2001 NY-16 On top of pile 165 0.3366 <0.4 NIOSH 0500 Enclosed Cab

Inside Non- 9/21/2001 NY-17 On top of pile 154 0.3203 <0.5 NIOSH 0500 Enclosed Cab

Inside Non- 9/21/2001 NY-19 On top of pile 44 0.09152 <2 NIOSH 0500 Enclosed Cab

Inside Non- 9/22/2001 NY-22-02 West Side of Pile n/a 0.4492 0.37 NIOSH 0500 Enclosed Cab

n Inside Non- 9/22/2001 NY-22-04 West Side of Pile n/a 0.3667 < .4 ,NIOSH 0500 H Enclosed Cab rto Inside Non- sn 9/22/2001 NY-22-06 Enclosed Cab West Side of Pile n/a 0.4627 1 NIOSH 0500 o o 1 o o o Jeana M. Harrison Operating Engineers National Hazmat Program Total Dust; Page 1 of 3

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NYC-WTC_000209185