The Consultant shall perform consultation, research, professional and technical services required for Environmental Generalist Services, including, but not limited to, preparing environmental studies, reports, documents, and permit application and conducting environmental field observations, studies, data collection, and inventories on an “asneeded” basis to support the Department of Transportation (Caltrans) District 4, Division of Environmental Planning and Engineering, Capital Outlay Support (COS) Program, from Phase 0 Project Approval and Environmental Document (PA&ED) phase, Phase 1 Plans, Specifications, and Estimates (PS&E), and Phase 3 Construction Outlay Support phase of District 4 south counties (Counties of San Mateo, San Francisco, and Santa Clara projects. The Caltrans Contract Manager shall assign specific work to the Consultant to assist the Caltrans work force through the issuance of Task Orders describing in detail the services to be performed. The Consultant shall only perform work that is assigned in an authorized Task Order. The Contract does not guarantee that a Task Order shall be issued. The Consultant may provide services to Caltrans including, but not limited to, the preparation of various levels of Environmental Documents and Documentations and any incidental related environmental technical studies and deliverables such as Environmental Impact Reports (EIR), Environmental Impact Statements (EIS), Initial Study (IS)/Negative Declaration (ND)/Mitigated Negative Declaration (MND), Environmental Assessments (EA)/Finding of No Significant Impacts (FONSI), or Categorical Exemptions (CE)/Categorical Exclusions (CE) as required under the National Environmental Policy Act (NEPA) and the California Environmental Quality Act (CEQA) compliance with Clean Water Act (CWA) section 401 and 404 water quality certification, Environmental Documentation (ED), and any supporting environmental technical studies and deliverables as applicable to federal, states, and local statutes, laws, regulations, and policies and as required to ensure compliance with environmental review and approval pursuant to biological, water quality, air quality, and other natural resource and regulatory requirements. Provide support in obtaining environmentally related permits, licenses, agreements, and certifications (PLACs) from various Federal, State, or Local Resource Agencies or entities; conducting short and long-v