NYC-WTC_000203408

NYC 9/11 Public Portal Document

Add Gases Air Sampling Analysis Results Metal Air Sampling Analysis Results Collection Date; Night of 9/20/01 Collection Date: 9/20/01 • Units: mg/m'

Compound Queens Bronx Manhattan Brooklyn Brooklyn Staten Island Metal Queens j Bronx Manhattan Brooklyn Brooklyn Staten Island Broadway Ave US'* St & Central Park N. Berry St& Atlantic Ave & Bay St & Broadway Ave ■ 138”’St & Centra! Park N. Berry St & Atlantic Ave & Bay St & &31«St S^'iAve & Lenox North ir‘St Smith St Victory Blvd &3V'St I 3f4Ave & Lenox North 11''’St Smith St Victory Blvd Acetic Acid <5.0 PPM <5.0 PPM <5.0 PPM <5-0 PPM <5.0 PPM <5.0 PPM Aluminum (Al) <0.01 <0.01 <0.01 <0.01 0.03 <0.01

y Nitric Acid <1.0 PPM <1.0 PPM <1.0 PPM <1.0 PP.M <1.0 PPM, <1.0 PPM Antimony (Sb) 0.22 0.08 0.15 0.02 <0.01 0.02 Sulphuric Acid <5.0 PPM <5.0 PPM <5.0 PPM <5.0 PPM <5.0 PPM <5.0 PPM Arsenic (As) 0.12 0.08 0.05 0.01 0.15 <0.01 Hydrochloric Acid <10.0 PPM <10.0 PPM <10.0 PPM <10.0 PPM <10.0 PPM <10.0 PPM Barium (Ba) 0.01 <0.01 <0.01 <0.01 <0.01 <0.01 formic Acid <1.0 PPM <1.0 PPM <1.0 PPM <1.0PPM <1.0 PPM <1.0 PPM Beryllium (Be) <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 ChromicAcid <0.10 PPM <0.10 PPM <0.10 PPM <0.10 PPM <0,10 PPM <0.10 PPM Cadmium (Cd) 0.01 <0.01 <0.01 <0.01 <0.01 <0.01 Acid Test <10.0PPM <10.0 PPM <10.0 PPM <10.0 PPM <10.0 PPM <10.0 PPM Calcium (Ca) 0.94 1.10 0.95 0.94 1.55 1.13

Chromium (Cr) 0.03 0.03 0.03 0.03 0.04 0.02

Copper (Cu) 0.11 0.02 0.06 0.01 0.01 0.01 lron{Fe) 0.26 0.04 0.02 0.01 0.32 0.04

Lead(Pb) 0.23 <0.01 <0.01 <0.01 0.01 <0.01

Magnesium (Mg) 0.10 0.20 0.16 0.16 0.41 0.18

Manganese (Mn) 0.01 <0.01 0.01 <0.01 0.01 <0.01

i Mercury (Hg)

Nickel (Ni) <0.01

<0.01 <0.01

<0.01 <0.01

<0.01 <0.01

<0.01 <0.01 <0.01

<0.01 <0.01

Potassium (K) 0.17 j 0.01 0.06 <0.01 0.34 0.02

•T Selenium (Se) 0.34 1 0.11 0.14 0.09 0.06 0.03 I ro Silver (Ag) 0.12 ~r 0.01 <0.01 <0.01 <0.01 <0.01 2 Sodium (^a) <0.01 <0.01 <0.01 <0.01 <0.01 <0.01

inaiiiumtTi) 0.03 0.01 0.01 <0.0' 0.01 0.01

Zinc(7n) 0.03 <0.01 <0.01 <0.01 0.05 <0.01 cc

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NYC-WTC_000203408