| 31. | Because a day care center is next door, they are conducting air sampling and soil tests.
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| 32. | Like most scientists who study air samples, Portnoy had assumed these were just bits of soot.
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| 33. | The crew was to take air samples in higher altitudes to check the pollution-threatened ozone layer.
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| 34. | On 41 different days, researchers took air samples in the market, and consistently found fish allergens.
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| 35. | Environmental Protection Agency investigators took air samples Thursday to determine if there was any residual contamination.
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| 36. | Williams frequently encountered the black specks on his microscope slides while studying air samples in Denver.
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| 37. | American air samples returned to Earth on Oct . 27 reached the United States earlier this week.
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| 38. | Portable field sensors can screen air samplings and give an initial analysis within 15 minutes, he said.
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| 39. | Meantime, EPA assistant administrator Timothy Fields said the EPA began taking air samples near the incinerator Wednesday.
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| 40. | Narlikar was part of a study which cultured microorganisms from stratospheric air samples obtained at 41 km.
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