40 CFR 312.24: Reviews of historical sources of information
- Subpart C—Standards and Practices
- Revised as of July 1, 2025
Section 312.24 of the federal All Appropriate Inquiries rule, 40 CFR part 312, the rule a Phase I Environmental Site Assessment is performed to satisfy. The section is below as the regulation prints it.
Reviews of historical sources of information
- 40 CFR 312.24
- Revised as of July 1, 2025
Section 312.24 of the federal All Appropriate Inquiries rule, 40 CFR part 312, the rule a Phase I Environmental Site Assessment is performed to satisfy. The section is below as the regulation prints it.
§ 312.24 Reviews of historical sources of information.
(a) Historical documents and records must be reviewed for the purposes of achieving the objectives and performance factors of § 312.20(e) and (f). Historical documents and records may include, but are not limited to, aerial photographs, fire insurance maps, building department records, chain of title documents, and land use records.
(b) Historical documents and records reviewed must cover a period of time as far back in the history of the subject property as it can be shown that the property contained structures or from the time the property was first used for residential, agricultural, commercial, industrial, or governmental purposes. For the purpose of achieving the objectives and performance factors of § 312.20(e) and (f), the environmental professional may exercise professional judgment in context of the facts available at the time of the inquiry as to how far back in time it is necessary to search historical records.
For the All Appropriate Inquiries rule the regulation governs. This page copies the Code of Federal Regulations' annual edition revised as of July 1, 2025, which is kept up to date by the Federal Register; amendments published there since that date are not shown. This page is a reference copy and not legal advice. Check the current regulation before relying on it.
Source
- Environmental Protection Agency, 40 CFR part 312, in Title 40 of the Code of Federal Regulations, Parts 300 to 399, revised as of July 1, 2025, as the U.S. Government Publishing Office posts it. File read October 6, 2026.