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CLEAR county synthesis: ARAPAHOE

Clinical, Local, Environmental Air & Regulatory Intelligence
Stored synthesis

CLEAR county synthesis: ARAPAHOE

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Guardrail: System-generated screening synthesis. Generated from a structured CLEAR evidence packet. Not a causation, compliance, enforcement, permit violation, or health attribution conclusion.
Evidence summary

Structured packet summary

Topicpm25_industry_overlap_2024
Statusllm_completed
Facility candidate count53
Distinct owner count
Distinct NAICS count
Average PM2.55.395
Max PM2.5 AQI78
Max ozone AQI161
PM2.5 monitor days286
Ozone monitor days
Unhealthy days2
Unhealthy for sensitive groups days15
Industrial profile

Top facility owners

  • KOCH HYDROCARBON CO
  • CITY & COUNTY OF DENVER
  • HERITAGE CLEANERS
  • LAFARGE WEST, INC.
  • BP PRODUCTS NORTH AMERICA
  • AEROSPACE DATA FAC II (DELETED 1988)
  • ASPHALT PAVING CO
  • BARTLETT OIL (DELETED)
  • BENNETTS BBQ INC
  • BRADLEY PETROLEUM INC
Industrial profile

Top NAICS codes

Industrial profile

Top ZIP codes

  • 80137
  • 80102
  • 80018
  • 80112
  • 80122
  • 80103
  • 80136
  • 80231
  • 80105
  • 80000-0000
Air context

Highest PM2.5 dates

  • 2024-07-23
  • 2024-07-24
  • 2024-10-01
  • 2024-07-22
  • 2024-10-11
  • 2024-10-06
  • 2024-10-07
  • 2024-07-25
  • 2024-10-08
  • 2024-02-15
  • 2024-10-13
  • 2024-10-19
  • 2024-02-06
  • 2024-08-10
  • 2024-08-01
  • 2024-09-13
  • 2024-10-04
  • 2024-01-04
  • 2024-07-31
  • 2024-10-12
System synthesis

Stored model output

# 1. Executive screening summary

The county of Arapahoe shows an annual maximum AQI of 161, driven by ozone levels, with 366 days of ozone monitoring. PM2.5 data indicates an average of 5.395 µg/m³, with 286 days of monitoring. There were 2 unhealthy days and 15 days classified as unhealthy for sensitive groups. The data includes 53 facilities with associated air quality monitoring sites, and 726 ozone-related records.

# 2. Industrial profile

Arapahoe has 53 facility candidates, with 14 distinct NAICS codes and 43 distinct owners. The top facility owners include "KOCH HYDROCARBON CO," "CITY & COUNTY OF DENVER," and "HERITAGE CLEANERS." The top NAICS codes are 211130, 457110, and 562212, indicating a mix of industrial and service-based activities. The highest facility concentration is found in zip codes 80137, 80102, and 80018.

# 3. PM2.5 and ozone signal

Ozone levels reached a maximum AQI of 161 on July 24, 2024, with an arithmetic mean of 0.077471 ppm. PM2.5 AQI reached a maximum of 78, with an average of 5.395 µg/m³. Ozone monitoring occurred on 366 days, with 726 records, while PM2.5 monitoring occurred on 286 days, with 538 records.

# 4. Highest PM2.5 dates

The highest PM2.5 levels occurred on July 23, 2024, with an average arithmetic mean of 23.61 µg/m³, and July 24, 2024, with an average of 21.32 µg/m³. Other high PM2.5 days include October 1, 2024, and October 11, 2024, with averages of 21.71 and 18.82 µg/m³, respectively.

# 5. Confounders and missing data

Potential confounders include wildfire smoke, regional transport, meteorology, temperature inversion, agricultural dust, oil and gas activity, traffic, and monitor siting limitations. Missing data includes facility-level emissions, permit violation records, hospitalization data, wind/smoke data, and no causal model or source apportionment.

# 6. What cannot be concluded

No causation, permit violation, enforcement priority, compliance status, or health attribution can be concluded from this evidence packet. The data does not support conclusions about the sources of air quality issues or their health impacts.

# 7. Recommended next data pulls and policy addendum candidates

Further data pulls should include facility-level emissions, structured permit violation records, hospitalization data, and wind/smoke data. Policy addendums could focus on industrial activity, air quality monitoring, and regional air transport considerations.
Audit metadata

Packet audit trail

Packet keycolorado_county:arapahoe:pm25_industry_overlap_2024
Geography nameARAPAHOE
Geography typecounty
Topicpm25_industry_overlap_2024
Statusllm_completed
Model namepulmhealth-innesa-article
Model routehttp://dgxspark-03:8000/v1/chat/completions
Prompt modetiny
Disable thinkingTrue
Max tokens900
Think blocks strippedTrue
Synthesis completed at2026-07-07T08:19:04.596132+00:00
Created at2026-07-07 01:28:02.080824-06:00
Updated at2026-07-07 02:18:32.110560-06:00