Bubble policy

Bubble Policy The bubble concept introduced under PSD provisions of the Clean Air Act Amendments of 1977 was formally proposed as EPA policy on Jan. 18, 1979, the final policy statement being issued on Dec. 11, 1979. The bubble pohcy allows a company to find the most efficient way to control a plant s emissions as a whole rather than by meeting individual point-source requirements. If it is found less expensive to tighten control of a pollutant at one point and relax controls at another, this woiild be possible as long as the total pollution from the plant woiild not exceed the sum of the current hmits on individual point sources of pollution in the plant. Properly apphed, this approach would promote greater economic efficiency and increased technological innovation. 

Bubble policy [or bubble exemption under Prevention of Significant Deterioration (PSD)]. The bubble policy was under the state implementation plans (SIP) first. PSD does not allow bubbles it only allows netting. 

Governmental-policies effect on costs, 155-157 Gradient, liquid, over bubble-cap trays, 672-673 Graphs in reports, 460-461 Grass-roots plant, definition of, 167 Gross-earnings costs, 194, 196-197, 208-209,... 

The bubble concept was formally proposed as EPA policy on January 18, 1979, with the final policy statement being issued on December 11, 1979. The bubble... 

Any accumulation of air bubbles in the bottle due to accidental introduction of air or to the use of undegassed solvents may lead to an enhancement in flow pulsation and a deterioration in flow stability. It is therefore a wise policy to often check the upper part of the displacement bottle for air bubbles, and release them before a degradation of performance occurs. For trouble-free operation, it is also good practice to degas beforehand the solvent and water used for the displacement. 

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