Figure 1.

New York City (NYC) response area used to determine enrollment eligibility for responders to the 9/11 attacks — World Trade Center (WTC) Health Program. Note that the response area also includes WTC-related locations not shown, such as certain barge loading piers and the Staten Island Landfill, and vehicle maintenance areas. Responders are persons who were involved in rescue, response, recovery, clean-up, and related support activities after the September 11, 2001 terrorist attacks.

Source: Azofeifa et al.¹⁴