We are in the middle of working through a couple Phase I Environmental Site Assessments for the Illinois Housing Development Authority’s Low-Income Housing Tax Credit projects. These ESA’s are not typical; they involve several non-scope investigations. For us, this makes these projects all the more interesting. While looking over the website for anything new in the 2014 requirements, I noticed a link to the HUD resource exchange where they have a very concise comparison of the old ASTM standard for environmental site assessment (ASTM 1527-05) and the current standard (ASTM 1527-13).
If you are interested, link to the fact sheet here: Fact Sheet: Applicability of ASTM E 1527-13 Phase I ESA Standard for HUD Environmental Reviews .