In 1988, the Metropolitan Transportation Authority (MAT) attempted to build a new bus depot in the already heavily burdened neighborhood of West Harlem in Northern Manhattan, New York City. Northern Manhattan is a predominantly African American and Latino part of the city that disproportionately hosts several pollution facilities that harm the health of their residents. Some of the environmental burdens located in Northern Manhattan at that time included: a waste water treatment plant, a marine transfer station, a system of highways surrounding the neighborhood that represent some of the most important routes for transporting goods in and out of Manhattan, and six out of the eight MAT bus depots located in Manhattan. The Northern Manhattan community's asthma mortality and morbidity rates were five to six times higher than the national average. The connections between the environmental burdens and health impacts made spark the controversy.