As discussed elsewhere in this report, this project assembled a network of domestic wells, selected from 675 search areas ("buffers") uniformly distributed over the nine-county study area (Figure 1). The network is referred to as the "voluntary nitrate monitoring network" (VNMN). The county well coordinators attempted to enroll one randomly selected domestic well from within each buffer of the network.
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Minnesota Department of Health (St. Paul, Minnesota)
MDH—Source Water Protection Program