Sub-locations
| Name | Sites | Samples |
|---|---|---|
| Hickman County | 1 | 2 |
| Houston County | 2 | 8 |
| Jackson County | 7 | 18 |
| Jefferson County | 1 | 1 |
| Johnson County | 2 | 3 |
| Lake County | 4 | 9 |
| Lauderdale County | 2 | 8 |
| Lincoln County | 4 | 23 |
| Loudon County | 6 | 23 |
| Madison County | 2 | 41 |
| Marion County | 3 | 45 |
| Marshall County | 1 | 9 |
| Maury County | 10 | 63 |
| Meigs County | 1 | 22 |
| Monroe County | 15 | 86 |
| Montgomery County | 3 | 19 |
| Obion County | 4 | 25 |
| Perry County | 4 | 50 |
| Pickett County | 2 | 22 |
| Polk County | 1 | 10 |
| Putnam County | 4 | 18 |
| Rhea County | 3 | 22 |
| Roane County | 6 | 29 |
| Robertson County | 1 | 4 |
| Rutherford County | 2 | 3 |