In celebration of Chicago’s historic Pullman District being designated a national monument, the Chicago Tribune has published historical photos and maps of the area. One of their interesting maps is an interactive “now” and “then” comparison using a fire insurance map from 1901 and a current aerial photograph.
This interactive map is a great example of how Gabriel uses historic fire insurance maps as part of our Phase I Environmental Site Assessment research. We compare the fire insurance maps for the area where our subject property is located with today’s maps, looking for any past uses of a property that may indicate hazardous substances were used previously and therefore may still be present in the soil or groundwater, or may be associated with a vapor migration or intrusion issue today.
For more information on fire insurance maps, read our earlier blog post “History of Fire Insurance Maps.”
Thanks to Dianne Crocker at EDR for the link to this map.Tags: fire insurance maps, Sanborn maps