The concentration of a pollutant in the environment
Cost Effectiveness
The least costly way to meet an abatement target
Technological Feasibility
A technically practical way to abate
Equimarginal Principle
The costs of abating a specified amount are at their minimum when all sources of pollution have equal marginal costs of abatement
Command and Control instruments/Standards
Direct commands to firms which are controlled to ensure compliance
Input Standard
Restricts the use of an input to production. Ex- lead
Technology/Process Standard
directs producers to use a specific technology or process. Ex- smokestack scrubbers
Emissions/Effluent Standards
Requires a source to emit no more than a given amount of effluent or rate of effluent
Technology Based Effluent Standard
A standard that is set based on the effluent levels that would be emitted if a known technology were used
Ambient Standards
Specify the concentration of pollution that is acceptable in the environment
Point Source
Emits its effluent from and identifiable point like a drainage pipe
Non-Point Source Pollution
Occurs when it is either impossible to see the emissions or when the emissions travel a long way before the settle, cannot be easily traced
Market-Based Instruments/ Market Based Incentives/ Market Mechanisms
Use incentives to encourage a change in behavior rather than requiring firms to undertake specific behavior
Pollution Tax
A requirement to pay a set price for every unit of pollution that a source emits
Subsidy
A payment as an incentive to change behavior
Marketable permit program/tradeable emissions program/ cap and trade program
The buying and selling of pollution permits. Regulator caps number of permits, assigns or auctions permits, and then firms buy and sell amongst each other
Offset
An additional quantity of a pollutant that a firm is allowed to emit if the firm ensures that emissions outside it own operations are reduced by the same amount