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Source proximity grouping criteria for AFARE sample site locations. There are 14 total sampling locations
| CAFO | Major roads | Agricultural fieldsa | ||||
|---|---|---|---|---|---|---|
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| Classification | Distance (km) | nb | km | nb | km | nb |
| Proximal | <2.0 | 5 | <0.4 | 5 | <0.4 | 4 |
| Intermediate | 2.1–3.0 | 4 | 0.5–1.0 | 5 | 0.5–1.0 | 5 |
| Distal | >3.1 | 5 | >1.0 | 4 | >1.0 | 5 |
| Total sites | 14 | |||||
Distance from nearest field perimeter.
n = number of sampling locations.
