A hazardous materials release can occur from two sources: from fixed sites (facilities that hold hazardous materials on site) and from transportation related operations. Because of the small amount of presence of critical transportation infrastructure, Shoreline is more likely to have transportation related hazardous materials release. 

The Washington State Public Health Laboratories that is located on the Fircrest campus and gasoline stations are also concerns. The lab has a fairly sizeable number, but in small quantities, of individual chemicals. There are 10 gasoline stations located within Shoreline.