Sub-locations
| Name | Sites | Samples |
|---|---|---|
| Abbeville County | 2 | 5 |
| Aiken County | 16 | 80 |
| Allendale County | 5 | 50 |
| Anderson County | 2 | 11 |
| Barnwell County | 5 | 7 |
| Beaufort County | 35 | 144 |
| Berkeley County | 12 | 47 |
| Charleston County | 31 | 74 |
| Chesterfield County | 3 | 5 |
| Colleton County | 1 | 1 |
| Darlington County | 1 | 2 |
| Edgefield County | 1 | 4 |
| Fairfield County | 2 | 6 |
| Florence County | 2 | 3 |
| Georgetown County | 5 | 20 |
| Greenville County | 2 | 16 |
| Horry County | 3 | 15 |
| Jasper County | 4 | 13 |
| Kershaw County | 1 | 1 |
| Lancaster County | 4 | 9 |
| Lexington County | 6 | 36 |
| Newberry County | 0 | 0 |
| Oconee County | 2 | 4 |
| Pickens County | 2 | 8 |
| Richland County | 2 | 16 |