Superfund / NPL site · EPA Superfund SEMS through latest publishNPL Deleted

Boise Cascade/Onan Corp./Medtronics, Inc.

This site has been deleted from the EPA Superfund National Priorities List — EPA's classification means construction-complete cleanup objectives were achieved, though monitoring may continue. Most-cited contaminant of concern: 1,1'-Biphenyl.

1400 73Rd Avenue Ne, Fridley, Minnesota · ZIP 55432 · EPA ID MND053417515

CLEANUP TIMELINE

Listing-date and cleanup-phase enrichment from EPA's per-site SEMS profile is queued for a follow-up ingest pass. Until then, this section will populate from EPA's published timeline data.

Anomaly engine

Notable Signals

No notable signals at this Superfund site for the current ingest. Cleanup-phase and SEMS-action flags are deferred to a follow-up engineering pass.

Contaminants of concern · per EPA SEMS

What's In This Site

Each row pairs a contaminant with the medium it was found in (the exposure pathway). Hover any named contaminant for an agency-cited health-risk summary. Cited count = number of SEMS decision records (RODs and related) that name the pair.

ContaminantPathwayCited
1,1'-BiphenylGroundwater1
1,2-DihydroacenaphthyleneGroundwater1
1-MethylnaphthaleneGroundwater1
1H-IndeneGroundwater1
2-MethylnaphthaleneGroundwater1
9H-CarbazoleGroundwater1
9H-FluoreneGroundwater1
AcenaphthyleneGroundwater1
AnthraceneGroundwater1
Benzo(B)FluorantheneGroundwater1
Benzo(Ghi)PeryleneGroundwater1
Benzo(K)FluorantheneGroundwater1
Benzo[A]AnthraceneHealth riskPAH; IARC Group 2B possible carcinogen; common combustion byproduct and creosote constituent. (IARC)Groundwater1
Benzo[A]PyreneHealth riskPAH; IARC Group 1 carcinogen; the prototypical PAH used to benchmark PAH-mixture cancer risk. EPA MCL 0.2 µg/L. (IARC, EPA)Groundwater1
Benzo[E]PyreneGroundwater1
Benzo[J]FluorantheneGroundwater1
ChryseneGroundwater1
Dibenzo(A,H)AnthraceneGroundwater1
DibenzofuranGroundwater1
FluorantheneGroundwater1
Indeno(1,2,3-Cd)PyreneGroundwater1
NaphthaleneHealth riskIARC Group 2B possible carcinogen; causes hemolytic anemia, especially in infants. (IARC)Groundwater1
PhenanthreneGroundwater1
Polycyclic Aromatic Hydrocarbons (Pahs)Health riskPAH class includes IARC Group 1 carcinogens (e.g., benzo[a]pyrene); long-term exposure raises cancer risk. (IARC, EPA)Surface Water1
PyreneGroundwater1
QuinolineGroundwater1
Drinking-water linkage · SDWIS

Groundwater Systems Serving Communities Within 3 Miles

The 5 systems below draw on groundwater (or mixed sources) and serve communities whose centroid sits within 3 miles of this site. Distance is to the served-city centroid — SDWIS does not expose individual wellhead locations, so this is a proximity screen, not a wellhead-impact assessment.

Water systemServesDistancePopulation servedSourceStatus
Spring Lake Park MunicipalSpring Lake Park1.5 mi7,200GROUNDWATERIn compliance
Mounds View MunicipalMounds View1.5 mi13,250GROUNDWATERIn compliance
Fridley Terrace Mobile Home Park PrivateFridley1.5 mi1,300GROUNDWATERUNRESOLVED
Fridley MunicipalFridley1.5 mi27,476GROUNDWATERIn compliance
New Brighton MunicipalNew Brighton2.4 mi22,902GROUNDWATERIn compliance

Methodology: served-city centroid (TIGER 2020) is used as the PWS coordinate. Source-water classification from SDWIS primary_source_code; only groundwater and mixed-source systems are queried. Click any system above for its full SDWIS profile.

Equity context · ACS 2018-2022 block-group demographics

Who Lives Near This Site

Within 1 mile of this site (8 Census block groups, population-weighted demographics): a population of 8,817. Why we surface this →

POPULATION SHARE
21.2%

Low-income

POPULATION SHARE
44.2%

People of color

POPULATION SHARE
8.4%

Under age 5

POPULATION SHARE
13.9%

Over age 64

Source: Census ACS 2018-2022 block-group demographics, population-weighted across the 1-mile buffer around this site (from USEPA-clone/EJAM-open blockgroupstats). NPL site proximity contributes to the national EJ pattern; indicator-level percentile and disparity scores are surfaced on the county page and the state page.

Source. EPA Superfund Enterprise Management System (SEMS) · retrieved 2026-05-07. SEMS is a federal public-domain dataset under 17 USC §105.

What this is not. We report EPA's published Superfund record — site listing, status, and contaminants of concern as named in EPA's decision documents. We do not perform site visits, independent air or water sampling, or current-state health-risk assessment. NPL listing reflects EPA's Hazard Ranking Score at a point in time; it does not by itself describe present-day exposure.