I want a different answer for people that already answered thanks If emission standards are ruled out because of, for example, the impossibility of measuring emissions ( as in nonpoint-source emissions), what alternative types of standards might be used instead?

If you have to built a house or any kind of mall somewhere you have to need of construction after that you have need material for it after that also you have to hire hire persons for it for these inputs you have to pay these is avilable on solid market and also you have to pay for this all these things came from enivorment and it will change in envorment.

Market is based on two types

Taxes and subsise and second one is tranasfer able emission permits in two thing their is effect on outcomes .it set the price of pollution via taxes and sets the quantity in market and market allowed the based on the price per unit pollution they faced.

Incentive approach is based on controlling on emission to change this emission can changed be in two ways by taxing each emission or subsidy by each unit through this it can be back.