COC_MATRIX (Chain-of-Custody)
| Attribute | Format | Table | Guidelines & Restrictions | Definition |
|---|---|---|---|---|
| C2 | Valid Values | SAMPLE | COC_MATRIX is an optional field and may be left blank. | The code indentifying the sample matrix as noted on the chain-of-custody (e.g., water, soil, etc.). |
| COC_MATRIX must contain a valid value if populated |