CLEAR county synthesis: RIO BLANCO

Stored model output

# 1. Executive screening summary

The county of Rio Blanco has an annual maximum AQI of 142, with a maximum PM2.5 AQI of 142 and a maximum ozone AQI of 133. The average PM2.5 concentration is 5.531 µg/m³, and the average ozone concentration is 0.04287 ppm. There were 366 days with AQI data recorded, including 355 days of PM2.5 monitoring and 366 days of ozone monitoring. There were no unhealthy days, but there were 4 days classified as unhealthy for sensitive groups. The county has 31 facility candidates, with 31 geocoded facilities and 31 facilities with zip codes. The top facility owners include Encana Oil & Gas (USA) Inc., Fuel Resources Dev Co, and Williams Field Services. The top NAICS codes are 211130, 212321, and 212390. The top zip codes are 81650, 81641, and 81648.

# 2. Industrial profile

Rio Blanco has 31 facility candidates, with 31 geocoded facilities and 31 facilities with zip codes. The top facility owners include Encana Oil & Gas (USA) Inc., Fuel Resources Dev Co, and Williams Field Services. The top NAICS codes are 211130, 212321, and 212390. The top zip codes are 81650, 81641, and 81648, with 81650 having the highest number of distinct AIRS IDs, company names, and facility names.

# 3. PM2.5 and ozone signal

The annual maximum AQI in Rio Blanco is 142, with a maximum PM2.5 AQI of 142 and a maximum ozone AQI of 133. The average PM2.5 concentration is 5.531 µg/m³, and the average ozone concentration is 0.04287 ppm. There were 366 days with AQI data recorded, including 355 days of PM2.5 monitoring and 366 days of ozone monitoring. There were no unhealthy days, but there were 4 days classified as unhealthy for sensitive groups.

# 4. Highest PM2.5 dates

The highest PM2.5 AQI occurred on October 5, 2024, with an average arithmetic mean of 52.2458335 µg/m³ and a maximum AQI of 142. The next highest PM2.5 AQI occurred on October 6, 2024, with an average arithmetic mean of 34.6125 µg/m³ and a maximum AQI of 99. Other high PM2.5 days include July 23, 2024, with an average arithmetic mean of 28.2458335 µg/m³ and a maximum AQI of 87, and July 22, 2024, with an average arithmetic mean of 21.2041665 µg/m³ and a maximum AQI of 74.

# 5. Confounders and missing data

Confounding factors include wildfire smoke, regional transport, meteorology/wind direction, temperature inversion, agricultural dust, oil and gas activity, traffic/diesel corridors, monitor siting limitations, data completeness, and seasonal patterns. Missing data includes facility-level emissions not yet parsed, permit violation records not yet structured, hospitalization data not yet loaded, wind/smoke data not yet loaded, no causal model fitted, and no source apportionment performed.

# 6. What cannot be concluded

No causation, permit violation, enforcement priority, compliance status, or health attribution can be concluded from the provided evidence. The data does not support any conclusions about the health impacts of air quality or the compliance status of facilities.

# 7. Recommended next data

Packet audit trail