NYC-WTC_000209190

NYC 9/11 Public Portal Document

DRAFT

Other Compounds

All test results below provided by US EPA

Toxic metals & Lead in ambient air: As reported in the USEPA Report, Friday Sept 21:6 samples were collected at the Jacob Javits Center. Lead results were well below the HUD criteria (50 ug/ft" ). Most other toxic metals were either non-detects or trace.

Interpretation: No immediate public or occupational health threat. Lead levels in ambient air remain well below levels for worker concern.

Particulate monitoring: As reported in the USEPA Report, Friday Sept 21: Using 3x background for implementation of Dust Suppression Measures. All data collected with exception of screening area, was well below the 3x number.

Interpretation; No immediate public or occupational health threat. (Personal air sampling pending.) Appropriate respiratory protection should continue to be worn.

Notes: WTC area locations are defined according to: Inside controlled zone Location #A = West Broadway & Barclay Location #B = Church & Dey Location #D = Greenwich & Albany Location #E = South End & Liberty Location #F = West & Vesey Location #K = West & Albany Perimeter of controlled zone Location #C = Broadway & Liberty o Location #I = Broadway & Wall Street H Location #J = West & Warren Location #N = West side highway near Community College I o Neighborhood near controlled zone Location #H = One Chase Plaza I o Location #G = Church & Duane o o CO Draft; 9/23/01 \EnvironmentalMonitoringUpdate_9_2i CO Page: 3 of 3

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NYC-WTC_000209192