• HUD Guidance

Using a Phase I Environmental Site Assessment to Document Compliance with HUD Environmental Standards at 24 CFR 58.5(i)(2) or 50.3(i)

Date Published: November 2015



This guidance is focused on the investigation and source documentation addressing potential site contamination in HUD environmental review for acquisition and/or development of multifamily housing with five or more units or non-residential property. According to HUD regulations, environmental review for these project types must include the evaluation of previous uses of the site or other evidence of contamination on or near the site. The American Society for Testing and Materials (ASTM) E1527 Phase I Environmental Site Assessment (Phase I) is commonly used in HUD environmental review to undertake this analysis. This memorandum is intended to 1) describe the purpose and scope of the Phase I in HUD environmental review, 2) describe the treatment of non-scope “business environmental risk” issues in such Phase I assessments, 3) explain the responsibilities of the Phase I user and preparer, and 4) discuss potential further action based on the determinations of the Phase I.

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Tags: Environmental Review
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  • HUD
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  • HUD Approved