SIABASE: Ohio's archived list of pits, ponds and lagoons

SIABASE is an archived database of the Ohio Environmental Protection Agency (Ohio EPA) that lists about 2,800 sites. Ohio EPA says the sites represent pits, ponds and lagoons where various types of sludge were dumped over many years. Its Division of Environmental Response and Revitalization (DERR) posts the list as a spreadsheet and no longer maintains it.

In a Phase I ESA

ASTM E1527-21 does not name a list of this kind among its standard record sources. It is a state record of where sludge was dumped, so it bears on a property's history. Three things shape how to use it.

• The data are from the 1970s. Ohio EPA says the data were collected during the 1970s and published by U.S. EPA in 1980. An entry describes a site as it was reported then.
• The purpose was drinking water. Ohio EPA says the object of the data collection was to determine whether harm was done to drinking water supplies below each dump site. The page read does not say what was concluded for any site.
• Ohio EPA does not stand behind the entries. It says the archived databases are no longer maintained and may contain inaccurate or outdated information, and it disclaims any responsibility for wrong or misleading entries. Treat an entry as a lead to confirm against other sources.

What the record shows

The page read gives the size, period and purpose of the list. It does not describe the fields in the spreadsheet.

Where to look a site up

• The SIABASE spreadsheet is linked under Archived Databases on Ohio EPA's Database Request page, beside OLDSWLF and TOWNGAS.
• DERR is at 614-644-2924.

Getting the file

Ohio EPA describes the archived databases as available from DERR upon request. The page read does not say whether a file exists behind an entry. To ask, use Ohio EPA's online file review request form; Ohio EPA says the best first contact is the district office where the site is located.

Sources

Ohio Environmental Protection Agency pages, read October 7, 2026, no modified date shown:

• Database Request
• Contacts
• Access Public Records