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to have the scientific and evidentiary foundation
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that allows the analyst to discriminate
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between what's a really clean area
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and what's a really dirty area.
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And I'll give you one example of that that we'll look at
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later in the term with respect to vehicle emissions.
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I wondered about this,
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because EPA sets their air quality monitoring out in fields.
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There's one just across the Q-Bridge on Interstate 95,
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right next to the highway.
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When you go across, you get to the other side of the bridge,
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if you're heading east on 95, you can see it