Parcel coal-ash impoundment presence and status

EPA's Comprehensive Compliance Report dated 2025-06-11 is documented by the accepted Source campaign as a nationwide, one-row-per-CCR-unit workbook. The curated subset contains 49 units at 34 plants after filtering Unit Type to Surface Impoundment and Hazard Potential Classification to High, with coordinates reported on every row. This supports parcel-centered intersection or stated-distance screening through a documented spatial match. Preserve report vintage, raw unit type and hazard class, plant and unit identity, point provenance, and distance method; do not infer impoundment geometry, contamination, violation, structural condition, failure likelihood, or organisation ownership. Refresh requires a new FOIA request rather than an API or standing download.

The open annual EIA-860 full file provides plant-grain records for plants reporting an ash impoundment, with plant address and coordinates, impoundment-presence indicator, lined indicator, and operating status as of December 31 of the reporting year. It supports parcel-centered proximity screening after a documented spatial match, while remaining a plant-grain self-report rather than impoundment geometry or the EPA-regulated CCR universe.