Description
Readings from 21 roadside air quality monitors, kept by a council department that no longer exists.
Provenance
Sent to Lazarus by post, with a note asking whether anything could be saved. The dye layer had begun to fail at the outer edge; the last sectors came from a second read in a different drive. About 55 percent of the data could be read; the gaps are mapped.
Preservation
- Fixity (SHA-256)
e29501444b4e5277d193eeae5252c93174b856b22a61cfcdfabbccc36edb2822- Last verified
- Oct 21, 2026, by Vigil
- Migrated to
- CSV with a data dictionary, with the original files kept
- Copies
- Three, on two kinds of storage, in two cities
- Original carriers
- Kept in cold storage in Vancouver
Access
Free, in the Lazarus reading room in Vancouver and in partner reading rooms. Copies may be taken away under the work’s license.
Reading-room copies are migrated to CSV with a data dictionary, with the original files kept. The recovered files are kept exactly as they were found.
Cite as: Claystead Springs Environmental Health Department, Air quality monitoring, Claystead Springs, 1985–2002 (1985–2002). Lazarus Archive, LZ-18693.