| Sample location | Sampling date | Bacteria (#/ml) | Archaea (#/ml) | Total microbial load (#/ml) |
| Field 1, Injection well#1 | 2/13/2012 | 4.5E+02 | BDL | 4.5E+02 |
| Field 1, Injection well#2 | 2/13/2012 | 2.3E+03 | 1.3E+03 | 3.6E+03 |
| Field 1, Injection well#3 | 2/14/2012 | 4.4E+02 | 2.1E+01 | 4.6E+02 |
| Field 2, Injection well#1 | 2/20/2012 | 4.9E+03 | 5.3E+02 | 5.4E+03 |
| Field 2, Injection well#2 | 2/20/2012 | 3.3E+02 | 1.6E+02 | 4.9E+02 |
| Field 2, Injection well#3* | 2/20/2012 | BDL | ND | BDL |
| Field 3, Injection well#1* | 2/27/2012 | BDL | ND | BDL |
| Field 3, Injection well#2 | 2/27/2012 | 1.4E+03 | 1.2E+03 | 2.6E+03 |
| Field 3, Injection well#3 | 2/27/2012 | 3.4E+01 | 7.4E+02 | 7.7E+02 |