Fax cover sheet, 105 Duane Street site file

NYC 9/11 Public Portal Document

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LAECR RELPTICNS Fax:212-266-3204 Oct 22 '01 14:31 P.G4

NITROGEN OXIDES Nitrogen dio~dde and nitric ood. are respiratory irritants and aie pt(>inciple components of diesel combustion engines. OSHA regulates exposure to nitrogen dioxide and nitric oodde. Levels of nitrogen diode NO: and nitric ode NO area were sampled Wing personal sampling pumps operated at • 0.25 liters per mute {LPT t) with TEA treated molecular sieve tubes. Each ' sample was analyzed by the Wisconsin Occupational Health Labozatory according to the National Institute of Occupational Safety and Health (NIOSH) analytical method 6014

FORMALDEHYDE Fomasldeltydelevels is air were measured using SAC treated XAD.2 tubes with sasnpluna pumps operated at So cc per minute. WOXI. analyzed the samples.

ELEMENTAL CARBON Combustion products include a wide array of carbon-based particulate matter often called soot Soot particles are a mixture of polyaromatic hydroearbaess (coal tars) and other compounds in a size range of 0.1 to 2 microns in diameter. This particulate matter is a suspect lung esrciuogoa. NIOSB recently validated method 5040 for assessing exposure to diesel exhaust particulate using elemental carbon analysis. Personal and area sampling, was conducted following method 5040 using sampling pumps and open face Quartz Liters.

£poser. a Criteria TOTAL.HYDROCARBONS The er=otic compounds; most commonly reported ire corbustion include formaldehyde` bcazeae, acetaldehyde, polyatxnanc hydrocarbons. The U.S. EPA have pablisbod a dalebec of a number o: volatile organic eompotttds tacasuucd as put of the TD4E and BASE studies. These studies measured VOCs in indoor and outdoor air at over 90 raadangy sdecu d buildin=g (Girman-1999). Organic vapors (voiattle organic compounds) can illicit health effects such as eye, nose and throat lrtitadon. These effects are dependent upon► be VOC compounds present is the air and their oonoataeadoma Erposwrs to mixn nos of VOCs in buildings seat' cause symptoms of bade he and fatigue. There are so regulatory standards for legal hydrocarbons in air. As a general ;uldolina, most attire buildings have levels of hydrocarbons below 1 tnslligmm per cubic meter (as/m3).

FORMALDEHYDE Foatntdddehyde exposure has been associated with mucous mcmbmane ilattatisa. allergies, and possibly cancer. Expowre to tontaldch)'de can elicit immediaw srympooms of cry's,

CITYCM3-00008943

NYC-WTC 000125820