The selected firms will be responsible to perform Phase I, Phase II, and Phase III Environmental Site Assessments (ESAs), Biological Surveys, Brownfields related work, environmental program support services, and other related environmental studies and investigations on real property for the City of Phoenix. ESAs will be performed primarily on properties being evaluated for acquisition by the City, although in some instances City-owned property will be evaluated. Biological surveys will be performed primarily in conjunction with design activities for capital improvements, or as needed to assure compliance with Endangered Species Act requirements. Other environmental studies include, but are not limited to vapor encroachment assessments, Brownfields studies, groundwater monitoring, landfill redevelopment, and assistance for environmental permitting, emission testing, regulatory reporting, document preparation and technical support.