Choose a cost-benefit analysis to analyze and critique

Use an analysis which has been released in the past five years. Briefly summarize the case, but should also evaluate the methodologies used and provide critiques of the methodologies used. 

Please identify the following: 
 What was the purpose for the analysis? 

    What methods were used for data gathering? 

    Would the analytical methodology used be considered standard or at a high level? 

    Are there any innovations used that seem particularly interesting? 
 Are the results convincing, but not overstated? 

      Could more have been done with the existing method and data? 

minimum 600 words.