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Blaine County, Montana: environmental and disease records

Cancer mortality in Blaine County is 153.1 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 138 regulated facilities, sites and hazards inside the county, led by Rail grade crossing (47), Brownfield property (37), NPDES wastewater discharge permit (37). EPA AirToxScreen estimates a lifetime cancer risk from outdoor air toxics of 10 in a million, driven mainly by formaldehyde.

Rates are age-adjusted per 100,000 people. A cancer signal is marked significant when the lower bound of its 95 percent confidence interval is above the U.S. rate. Facility counts use active federal records located inside the county boundary. Approximate county center: 48.3554, -108.9651.

How this county ranks in Montana

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Cancer deaths and new cases versus the United States

Source: NCI and CDC State Cancer Profiles, both sexes, all ages. Sorted by the ratio of the county rate to the U.S. rate.

Cancer rates for Blaine County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
All cancer	Deaths	153.1	143.2	1.07x	116.9 to 197.5	2020-2024
Lung & bronchus	New cases	45.6	51.8	0.88x	27.7 to 71.8	2019-2023
All cancer	New cases	351.6	453.4	0.78x	295.1 to 416.3	2019-2023

Mortality measures versus the U.S. county median

Source: County Health Rankings, built from CDC National Vital Statistics System death records. The comparison value is the median of all U.S. counties.

Mortality measures for Blaine County
Measure	County	U.S. median	Difference	Unit
Premature death	18,542.2	9,842.6	+88%	years of life lost before age 75 per 100,000
Life expectancy	70	75.3	-7%	years
Child mortality	170.8	59.8	+186%	deaths under age 18 per 100,000
Infant mortality	n/a	6.2	n/a	deaths under age 1 per 1,000 live births
Injury deaths	150.1	96.9	+55%	deaths per 100,000
Drug overdose deaths	n/a	28.6	n/a	deaths per 100,000

Air toxics and air quality

EPA AirToxScreen 2020

Lifetime cancer risk from outdoor air toxics: 10 in a million. EPA treats 100 in a million as the upper end of acceptable risk and 1 in a million as the goal.

Formaldehyde8.93 per million
Carbon Tetrachloride2.79 per million
Acetaldehyde0.75 per million
Benzene0.48 per million

EPA Air Quality Index

No EPA air quality monitor reports daily AQI for this county.

Regulated facilities, sites and hazards by type

138 active records inside the county from EPA ECHO, TRI, Superfund, Brownfields, NPDES, EIA, FAA, FRA and corrections data.

Rail grade crossing47
Brownfield property37
NPDES wastewater discharge permit37
Public airport9
Gas station (mapped facility)4
Air permit holder (minor source)1
Auto repair or body shop (mapped facility)1
Small hazardous waste generator1
Landfill (mapped facility)1

Highest-severity records

The 25 records with the highest Envyrofax severity in the county, with the agency identifier to cite in a records request.

Edgar G Obie Airport, Chinook
NPDES wastewater discharge permit.
EPA FRS registry ID 110020064712 (U.S. EPA ECHO) Agency record
Severity 4.5
Blaine County Mosquito Control Pesticide, Chinook
NPDES wastewater discharge permit.
EPA FRS registry ID 110064629308 (U.S. EPA ECHO) Agency record
Severity 4.5
Harlem Airport Borrow Pit, Harlem
NPDES wastewater discharge permit.
EPA FRS registry ID 110069603593 (U.S. EPA ECHO) Agency record
Severity 4.5
Bear Paw Livestock Commission, Chinook
NPDES wastewater discharge permit.
EPA FRS registry ID 110009714979 (U.S. EPA ECHO) Agency record
Severity 3.8
Lodge Pole Community Hall, Chinook
Brownfield property.
EPA FRS registry ID 110038722120 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Caroline Brown'S Market, Harlem
Brownfield property.
EPA FRS registry ID 110041721401 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Bikini Coffee Corner, Chinook
Brownfield property.
EPA FRS registry ID 110043692439 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Chinook Eagles Club, Chinook
Brownfield property.
EPA FRS registry ID 110046369835 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
City Of Harlem, Harlem
Brownfield property.
EPA FRS registry ID 110071965152 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
People'S Creek Former Cattle Dip Operation, Harlem
Brownfield property.
EPA FRS registry ID 110071968893 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Old Agency Landfill, Harlem
Brownfield property.
EPA FRS registry ID 110071970136 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Snake Butte Quarry, Harlem
Brownfield property.
EPA FRS registry ID 110071970137 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Agency Dump Site, Harlem
Brownfield property.
EPA FRS registry ID 110071970153 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Blaine County Courthouse, Chinook
Brownfield property.
EPA FRS registry ID 110071970559 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Former Equity Co-Op, Harlem
Brownfield property.
EPA FRS registry ID 110071970563 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Ramona King Center, Hays
Brownfield property.
EPA FRS registry ID 110071971655 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Tribal Administration Office Building, Harlem
Brownfield property.
EPA FRS registry ID 110071971657 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Miller Property, Chinook
Brownfield property.
EPA FRS registry ID 110071972289 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Nissen Property, Harlem
Brownfield property.
EPA FRS registry ID 110071972994 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Old Lodge Pole Elementary School, Lodge Pole
Brownfield property.
EPA FRS registry ID 110071975292 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Sacred Heart Catholic Church, Harlem
Brownfield property.
EPA FRS registry ID 110071975293 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Sue Tipton House, Harlem
Brownfield property.
EPA FRS registry ID 110071976383 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Bo Horn Weasel House, Harlem
Brownfield property.
EPA FRS registry ID 110071977332 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Gordon Gray House, Harlem
Brownfield property.
EPA FRS registry ID 110071977333 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Mcguire Motel, Harlem
Brownfield property.
EPA FRS registry ID 110071979136 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3

Correctional facilities

Prisons, jails and corrections operations with an EPA facility record, and the drinking water and wastewater compliance attached to them.

No correctional facility with an EPA record is located in this county.

Discovery / public records

Records to request for Blaine County

Montana state cancer registry
Cancer incidence counts by census tract or ZIP code, by cancer type and year (de-identified). Any cancer cluster inquiries or investigations in Blaine County, and their findings.
Montana vital statistics office
Death certificate counts by cause of death and residence tract or ZIP code, and the years behind the mortality measures above.
Montana health department, environmental epidemiology
Health consultations or assessments by ATSDR or the state health department covering the county, and any exposure investigations.
Montana environmental agency and the U.S. EPA regional office
Compliance history, inspection reports, notices of violation, penalties and enforcement actions for each facility above, cited by EPA FRS registry ID.
Montana drinking water program
Violation notices, sampling results and sanitary surveys for the public water systems serving the county, including any system serving a correctional facility.
Department of corrections or county sheriff
Water testing, grievances and environmental health inspections for the correctional facilities listed above.

Each Envyrofax address report includes a printable records request worksheet with the custodian and the exact request wording per finding.

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