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| Sample Type | Description |
| A | 24 HOUR COMPOSITE - (SURFACE WATER) |
| B | 12 HOUR COMPOSITE - (SURFACE WATER) |
| BA | BAILER |
| BP | BLADDER PUMP |
| C | 8 HOUR COMPOSITE - (SURFACE WATER) |
| CP | CENTRIFUGAL PUMP |
| D | 6 HOUR COMPOSITE - (SURFACE WATER) |
| E | GRAB |
| F | 16 HOUR COMPOSITE - (SURFACE WATER) |
| M | METER READING |
| PP | PERISTALTIC PUMP |
| SP | SUBMERSIBLE OR IN-PLACE DEDICATED PUMP |
| Z | UNKNOWN |