Superfund.

§ I · The surface

"Superfund" is the colloquial name for the program established by the Comprehensive Environmental Response, Compensation, and Liability Act — CERCLA — passed by Congress in 1980 in the aftermath of Love Canal. The statute gave the federal government the authority to identify sites contaminated by hazardous waste, force the parties responsible for the contamination to clean them up, and, when the responsible parties were insolvent, unidentifiable, or beyond reach, draw on a federal trust fund to pay for cleanup directly. The trust fund was originally financed by a dedicated excise tax on petroleum and chemical manufacturers — the polluter-pays principle made explicit — though that tax has been allowed to lapse and reinstate several times over the program's life.

The category of "Superfund site" is broader than most homeowners realize. The popular image — a fenced industrial wasteland with skull-and-crossbones signage — describes only the most severe tier of the program, the National Priorities List (NPL). The NPL is the formal federal roster of sites whose contamination is severe enough to warrant long-term, federally administered remedial action. There are roughly 1,300 NPL-listed sites nationally. Tennessee has eighteen of them. Davidson County, despite being the state's most populous county and home to substantial industrial history, has none.

The Superfund universe most homeowners encounter is the much larger set of non-NPL sites tracked in EPA's Superfund Enterprise Management System (SEMS). SEMS records every site EPA has assessed under CERCLA authority, including those that were investigated, found not to meet NPL listing thresholds, and archived as "No Further Remedial Action Planned" — abbreviated NFRAP. SEMS is the database that surfaces when a Parcelscope report flags a Superfund finding near an address. NFRAP is the most common status. It does not mean nothing happened. It means the federal government investigated, determined the contamination did not rise to NPL severity, and closed the file.

§ II · The hidden layer

The Davidson County non-NPL Superfund universe is small enough that the most consequential entries can be named, located, and described. Two are worth knowing because they illustrate the program's actual scope.

The remaining non-NPL Davidson County SEMS records — Rolling Mill Hill, the various enumerated brownfield assessments, the historical industrial inventories — share a common pattern. Most were investigated, scored against EPA's Hazard Ranking System, found to fall below NPL listing thresholds, and archived. A smaller number remain in active status, typically because they involve federal facilities with ongoing administrative oversight rather than emergent contamination events.

§ III · What the records show

A Parcelscope report's Superfund category surfaces SEMS records within one mile of the subject address. The signal varies meaningfully by the record's status: a National Priorities List site within a mile is a finding that warrants serious attention and a Phase I Environmental Site Assessment before any real-estate decision; a non-NPL active site is a context flag; an NFRAP-archived site is a record that contamination existed, was investigated, and was closed by federal determination.

Three pieces of context worth knowing when reading these records:

First, "Superfund site" in colloquial usage and "NPL-listed site" in regulatory usage are not the same category. The Parcelscope report distinguishes between the two. A finding noted as "non-NPL" or "archived" describes a SEMS record that did not rise to the National Priorities List threshold. The distinction matters: an NPL site at half a mile is a different exposure question than an archived NFRAP record at the same distance.

Second, NFRAP does not mean "remediated to background." The closure standard EPA applies under CERCLA is risk-based: cleanup must reduce contamination to levels that no longer pose an unacceptable risk under the site's expected land use. The standard is rigorous but it is calibrated to acceptable risk, not to pristine soil. Residual contamination at a closed site, when present, has been determined by federal investigators to be below the threshold requiring further action. That determination is reviewable and, in some cases, has been revisited as new science emerges. Most NFRAP determinations stand. Some do not.

Third, the SEMS database captures what the federal program has investigated. Contamination that was never reported to EPA, never investigated under CERCLA, and never entered the federal pipeline does not appear in SEMS. State-level remediation activity — the kind tracked by TDEC's Division of Remediation through the state's Voluntary Cleanup Oversight and Assistance Program (VOAP) — is a separate record system. A site that was investigated and cleaned up at the state level only, without ever rising to federal attention, will appear in TDEC records but not in SEMS. Parcelscope's Hazardous Substance / Remediation Sites category reads both.

§ IV · The bottom line

The presence of an NPL-listed Superfund site within one mile of a Davidson County address is, in practical terms, a question that will not arise for any address. There aren't any. The presence of an active non-NPL SEMS site within one mile is a context flag worth understanding — particularly if the site involves a federal facility (where ongoing administrative oversight is the more likely explanation than active contamination) or a historical industrial parcel (where the site's investigation history is worth reading directly through EPA's site profile).

The most common Davidson County finding is an archived NFRAP site within one mile — the John P. Saad site, for instance, is roughly within range of a substantial part of Berry Hill, Wedgewood-Houston, and southern Edgehill. The right interpretation is usually: the federal government investigated, determined the contamination did not meet NPL severity, and closed the file. For a buyer or owner concerned by a specific finding, the actionable next step is to read the EPA site profile for that specific record — every SEMS site has a public profile page accessible through EPA's site search — and to ask whether the cleanup determination has been revisited recently. For findings within a few hundred feet, particularly when the site involves chlorinated solvents or volatile organic compounds, a Phase I Environmental Site Assessment is the standard professional product.

For an owner or buyer who wants to read SEMS records themselves: EPA's Superfund Site Information search is at cumulis.epa.gov/supercpad/CurSites/srchsites.cfm. The "Cleanups in My Community" map combines Superfund records with other EPA-tracked programs and is available at epa.gov/cleanups. Both are free. SEMS records typically include the site's contaminant inventory, investigation history, and current status — though the depth of profile detail varies substantially between NPL and non-NPL sites.

For everyone else, this is one of the thirteen categories Parcelscope reads against your address. The Hazardous Substance / Remediation Sites section of a report identifies the closest SEMS-listed federal cleanup site and the closest TDEC state-listed remediation site, distinguishes NPL from non-NPL from NFRAP, gives each finding a distance and a direction, and renders the resulting per-category score on the same plain-language scale as the other twelve hazards.