Site CharacterizationProvide a brief summary on each of the following points from the reading "Site Characterization", be sure to include examples in your descriptions:What is the purpose of site characterization?What are the four stages of site characterization?What are the differences and similarities of sampling and monitoring?You may utilize the "Write Submission" or a Word Document to complete this assignment. Be brief, but detailed enough so that you relay your understanding of the topics. Background and Historical ResearchProvide a brief summary on each of the following points from the reading "Background and Historical Research", be sure to include examples in your descriptions:What are the different types of historical data sources that you would use if a train derailed and spilled five rail cars of hydroelectric acid near a wetland? Be sure to identify the specific types of information that might be found useful on the data sources.At the spill mentioned above, what types of observations might be made by a first responded or environmental technician on-site?Why is it important that a property owner be able to defend themselves with respect to CERCLA liability? You may utilize the "Write Submission" or a Word Document to complete this assignment. Be brief, but detailed enough so that you relay your understanding of the topics.