These programs are likely to be effective when: 1) the pollutant is one where transactions and information costs are low, typically when industries have long experience with monitoring and controlling a pollutant, there are a large but fairly set number of possible market participants, and there are intermediary 
(These programs; are; likely to be effective; T:when: 1) the pollutant is one) (These programs; to be; effective) (the pollutant; is; one where transactions and information costs are low) (transactions and information costs; are; low; L:one) (industries; have; long experience with monitoring and controlling a pollutant)
These programs These programs the pollutant transactions and information costs industries
are to be is are have
likely to be effective T:when: 1) the pollutant is one
effective
one where transactions and information costs are low
low L:one
long experience with monitoring and controlling a pollutant