There are 3 points of the lecture .First,it discussed the regulation of how to deal with coal ash.Power companies did not agree with the regulations which requires companies to use liner to prevent harmful components form leaking the soil and caused pollution.Second,the cost of handling the polluting coal ash is quite high the the power companies can  not afford it ,strict new regulations would result in a significant increase in disposal and handling costs for the power companies,the total price will be 15 billion compared with the clean energy.Third,some analysts predict that creating very strict rules for storing and handling coal ash might discourage the recycling of coal ash into other products.however,if new regulations is used,the customers will worry about recyci