The main purpose of this legislative text is to repeal a specific tax related to natural gas under the Clean Air Act. This move aims to eliminate financial obligations associated with methane emissions and waste reduction for the petroleum and natural gas industries. Key provisions of this legislation include the repeal of Section 136 of the Clean Air Act, which previously established a program to incentivize the reduction of methane emissions from natural gas systems. Additionally, the bill rescinds any remaining funds that were allocated for this program but have not yet been used.