E-mails 2002 M. Gilsenan

NYC 9/11 Public Portal Document

New York State Department of Labor Division of Safety and Health Sampling Summary as of2/13/2002

Personal exposure sampling has been performed on numerous employees working on and around the WTC site. This has included firefighters, poUce officers, state troopers, corrections officers, poUce detectives, and sanitation workers. The New York State Department of Labor has to date coUected over 260 personal exposure samples on pubUc employees working at the site with over 2200 analyses performed. The sampling summary below is for activity up to 1/30/2002.

Asbestos Over 45 personal samples have been coUected so far with results ranging fi-om not detectable to 0.116 fibers per cc by PCM analysis. The use of TEM on 2 samples which initiaUy were above the PEL of 0.1 fibers per cc resulted in a reduction to at least 0.016 fibers per cc. Most results by PCM analysis have been weU below the PEL of 0.1 fibers /cc.

Bulk samples were collected in FDNY vehicles during the month of January to assist the department with an evaluation of contamination. AU of these samples had results which were below the detection Umit.

Carbon Monoxide Results for 44 personal exposure samples ranged fi-om 0 to 4 ppm as a time weighted average, weU below the PESH PEL of 35 ppm. Peak measurements reached 97 ppm on a personal monitor, stiU weU below the ceiling limit of200 ppm.

SiHca Personal sampUng (17 samples) results have shown most exposures to be below the detection limit for respirable sUica with aU exposures weU below the PESH PEL of 0.1 mg/m3

Metals Personal samples (37) coUected show aU exposures to be below the PESH PELS. Metals analyzed included lead, copper, manganese, molybdenum, magnesium, cadmium, nickel, iron, aluminum, zinc, and cobalt.

Surface wipe samples in some of the FDNY’s response vehicles were taken to assist the department with an evaluation of contamination of vehicles which had responded to the WTC site during the first few days of the disaster. These results are included in the data spreadsheet.

Volatile organics AU personal sampUng results have been weU below PESH Umits for 32 screening samples coUected for volatile organics. These samples included analyses for the foUowing; acetone, benzene, ethyl benzene, butyl alcohol, isopropyl alcohol, naphtha, styrene, toluene, and xylene.

Acid gases Exposures to acid gases such as hydrogen bromide, hydrogen chloride,

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