Table 9.\
Volatile Organic Compounds (μg/L)[^\*^](#note1-1) in the Blood of the
People Living in the United States and People Living in Churchill
County, Nevada

+----------------+--------------+--------+----------------+----------+
| **VOCs**       | **United     |        | **Churchill    |          |
| )[^†^](#note2) | States**     |        | County**       |          |
+----------------+--------------+--------+----------------+----------+
|                | **Arithmetic | **     | **Arithmetic   | **% \>   |
|                | Mean from    | 95^th^ | Mean of Total  | U.S.     |
|                | NHANES       | Percen | Study          | 95^th^   |
|                | III[^‡       | tile** | Population**   | perc     |
|                | ^](#note3)** |        |                | entile** |
+----------------+--------------+--------+----------------+----------+
| **1,1,1-Tri    | 0.34         | 0.8    | NC             | 0.0      |
| chloroethane** |              |        |                |          |
+----------------+--------------+--------+----------------+----------+
| **1,4-Dic      | 1.9          | 9.2    | 0.2            | 0.0      |
| hlorobenzene** |              |        |                |          |
+----------------+--------------+--------+----------------+----------+
| **2,5-D        | Smokers =    | N      | NC             | Could    |
| imethylfuran** | 0.14         | A[**^§ |                | not      |
|                |              | ^**](# |                | c        |
|                | Nonsmokers = | note4) |                | alculate |
|                | 0.024        |        |                |          |
+----------------+--------------+--------+----------------+----------+
| **Benzene**    | 0.13         | 0.48   | NC             | --       |
+----------------+--------------+--------+----------------+----------+
| **Carbon       | NC[          | NC     | NC             | --       |
| t              | ^║^](#note5) |        |                |          |
| etrachloride** |              |        |                |          |
+----------------+--------------+--------+----------------+----------+
| **             | 0.11         | 0.25   | 0.07           | 2.0      |
| Ethylbenzene** |              |        |                |          |
+----------------+--------------+--------+----------------+----------+
| *              | 0.37         | 0.78   | 0.31           | 1.5      |
| *m-/p-Xylene** |              |        |                |          |
+----------------+--------------+--------+----------------+----------+
| **o-Xylene**   | 0.14         | 0.28   | 0.08           | 1.5      |
+----------------+--------------+--------+----------------+----------+
| **Styrene**    | 0.074        | 0.18   | 0.009          | 7.3      |
+----------------+--------------+--------+----------------+----------+
| **Tetrach      | 0.19         | 0.62   | 0.3            | 3.4      |
| loroethylene** |              |        |                |          |
+----------------+--------------+--------+----------------+----------+
| **Toluene**    | 0.52         | 1.5    | 0.32           | 0.5      |
+----------------+--------------+--------+----------------+----------+
| **Trich        | 0.017        | 0.021  | NC             | 4.4      |
| loroethylene** |              |        |                |          |
+----------------+--------------+--------+----------------+----------+

> []{#note1-1 .anchor}\* Micrograms per liter
>
> []{#note2 .anchor}† Volatile Organic Compounds.
>
> []{#note3 .anchor}‡ VOC data were not reported in the *Second National
> Report on Human Exposure to Environmental Chemicals*, 2003.
>
> []{#note4 .anchor}§ Not available. The 95^th^ percentile for this VOC
> was not reported in the study we used as a reference.
>
> []{#note5 .anchor}║ Not Calculated was used when less than 60% of the
> study population had detectable levels of this chemical.