| Sample ID # | 2,4- | ||||||||||||||
| District | Commune | Vietnam | HCL | Site Type | Sample Type | Dichlorophenoxy Acetic Acid | Dicamba | 2,4-DB | Dichlor- prop | Dinoseb | MCPA | Picloram | Silvex (2,4,5-TP) | 2,4,5-T | |
| Aluoi | A So | VN9642 | 171 | exposed | former airbase soil (0-10cm) | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.50 | <0.01 | <0.01 | <0.01 | |
| Aluoi | A So | VN9622 | 173 | exposed | former airbase soil (10-30cm) | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.50 | <0.01 | <0.01 | <0.01 | |
| Dong Ha | Dong Ha | VN9645 | 277 | exposed | former airbase soil (0-10cm) | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.50 | <0.01 | <0.01 | <0.01 | |
| Dong Ha | Dong Ha | VN9630 | 279 | exposed | former airbase soil (10-30cm) | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.50 | <0.01 | <0.01 | <0.01 | |
| Con Cuong | Chi Khe | VN9636 | 320 | reference | farmer's field soil (0-10cm) | <0.01 | <0.01 | <0.01 | <0.01 | <0.02 | <0.50 | <0.01 | <0.01 | <0.01 | |
| Con Cuong | Chi Khe | VN9624 | 322 | reference | farmer's field soil (10-30cm) | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.50 | <0.01 | <0.01 | <0.01 | |