Phase I ESA per ASTM E1527-21 (higher end for industrial/brownfield histories)
$2k–$5kobserved
| Value kind | observed — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range. |
|---|---|
| As of | 2026 |
| Source | Lev |
| Review | checking…review by 2026-09-16 · fast cadence |
| Recorded changes | last 2026-07-14 · 2 revisions tracked |
| Claim id | phase-i-esa-per-astm-e1527-21-higher-end-for |
Where the guide uses it
Not quoted in a chapter yet; it is kept in the curated register.
← Full numbers register — every date-stamped figure in the guide, with revision history.