Here’s a document that summarizes an air-monitoring project. Sobering.
Monitoring Analysis of Air Surrounding a Chippewa Falls, WI Frac Sand Processing Plant
Data from a monitoring project by Concerned Chippewa Citizens (CCC) shows strong evidence for detection of particulate matter emanating from the EOG Resources (NYSE: EOG) sand processing facility located in the Northeast corner of Chippewa Falls, WI.
Three questions are examined:
1. Is there reason to believe there are other sources of particulates that might affect either of the principal monitoring sites?
2. Is there reason to believe the EOG site is producing off site particulate pollution?
3. Is the particulate matter of sufficient quantity and/or quality to be a health hazard?
Answer: Quite possibly. This monitoring effort can not answer
this definitively. However, strong evidence of particulate matter
from the EOG plant at locations over a mile from the facility call
for a more intensive investigation by the Wisconsin DNR and
Department of Health.
Click HERE for a link to the whole report