Sub-locations
| Name | Sites | Samples |
|---|---|---|
| Galveston County | 16 | 89 |
| Garza County | 28 | 162 |
| Goliad County | 3 | 11 |
| Gray County | 1 | 4 |
| Gregg County | 2 | 4 |
| Grimes County | 7 | 29 |
| Guadalupe County | 2 | 7 |
| Hale County | 1 | 14 |
| Hall County | 4 | 9 |
| Hamilton County | 3 | 56 |
| Hansford County | 6 | 16 |
| Hardin County | 1 | 4 |
| Harris County | 15 | 73 |
| Harrison County | 14 | 167 |
| Hays County | 12 | 145 |
| Hemphill County | 2 | 8 |
| Henderson County | 11 | 27 |
| Hidalgo County | 12 | 19 |
| Hill County | 9 | 53 |
| Hood County | 1 | 1 |
| Hopkins County | 14 | 99 |
| Houston County | 8 | 14 |
| Howard County | 1 | 3 |
| Hudspeth County | 14 | 82 |
| Hutchinson County | 6 | 21 |
Sites
| Site Identifier | Name | Location | Samples |
|---|---|---|---|
| 41SY41 | Robert Griffin | TX | 1 |
| 41SY45 | Buddy Hancock | TX | 1 |
| 41SY92 | Tyson | TX | 4 |