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EPA Special Investigative Audit Report, WTC Site, Nov 2001

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Draft environmental data report for the World Trade Center site prepared by IT Corporation for the EPA in November 2001.

NYC-WTC_000186193–000186246
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NYC 9/11 Public Portal Document

Benzene in Air at WTC Sites Linear Fit Lines

30000 Q. a 20000 u c o 10000 o 0 .---- ------------------------- Sept 19 Oct 14 Oct 23 Oct 30 Nov 7 Date

Benzene WTC North Tower (Linear Fit) ■ Benzene WTC South Tower (Linear Fit)

Figure 3. Benzene Fitted Lines at WTC North and South Towers

Full-scale charts of VOCs discussed in this section are provided in Attachment 3. These charts show concentration versus sample collection date from location exhibiting the highest VOC concentrations. Linear trend lines have been plotted on these charts, but, as mentioned earlier, because of high day-to-day concentration variability, caution must be used when looking at the overall trends.

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NYC-WTC_000186211Source: NYC Law Department, mirrored locally

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NYC-WTC_000130438 · Box DEP Box 53

Draft special investigative audit report on environmental data from the World Trade Center site prepared by IT Corporation.

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