4.1.1. NYCDOT requires the services of a contractor experienced and certified in spill response, investigation, remediation, transportation, and disposal of, hazardous, non-hazardous, petroleum-based materials, substances, and wastes. All Work detailed in these Project Specifications shall be done in accordance with applicable USEPA, NYSDEC and USDOT regulations. 4.1.2. The Contractor shall furnish all necessary labor, materials, vehicles, equipment, permits, registrations, certificates, licenses and incidentals required to conduct the Work described in these Project Specifications. The Contractor shall provide properly trained, licensed, certified, and supervised personnel that possess all of the necessary regulatory licenses, certificates, and permits, required for twenty-four (24) hour emergency and routine response services on an as needed basis at NYCDOT facilities and locations (the “Sites” or “Site”). 4.1.3. Work shall include all actions necessary to address the release or threatened release of hazardous, non-hazardous, petroleum-based materials, substances, or wastes into the environment as merited by Site specific conditions. Work may include, but is not limited to, spill containment, sampling and analyses, contamination delineation of all impacted media, preventing public exposure to contamination, remediation, monitoring for chemical hazards, waste characterization, profiling, containerization, marking, labeling, manifesting, and transportation of wastes to, an approved treatment, storage and disposal facility. The Contractor shall perform all Work in a manner that prevents, to the greatest extent practicable, any materials from being released into the environment including surface water, groundwater, drinking water supply, sanitary sewers and storm sewers, land surface or the ambient air.