Fig. 1

Number of HIR requests by year, 2007–2016. Source: Analysis of data from a database based on information from http://sboh.wa.gov/OurWork/HealthImpactReviews for the defined study period. Notes: Funding support for HIRs was suspended in 2009, and there were no dedicated staff to conduct them until October 2013, when funding was restored. Therefore, 2009 and 2013 represent years with limited staffing and capacity to support HIRs. In Washington, odd numbered years are long sessions (105 days) and even numbered years are short sessions (60 days), which could affect the number of requests per year