Kunal Parker recently reviewed Elizabeth Popp Berman, Thinking Like an Economist: How Efficiency Replaced Equality in U.S. Public Policy (Princeton UP, 2022). There's a lot here that's relevant to the history of environmental regulation. First, Parker's summary of Popp Berman's argument, with obvious implications for understanding historically some mainstays of environmental policy, such as cost-benefit-analysis and market tools for regulation:
The book explores the rise to prominence of an economic “style of reasoning” in U.S. policymaking in the post-World War II decades. Between 1950 and 1980, Popp Berman shows, this style pervaded realm after realm of policymaking, from social welfare programs to the regulation of markets to the management of the environment.
The chief institutionalizers of the economic style of reasoning were not neoliberals or libertarians (these would become truly prominent in government only after the election of Ronald Reagan in 1980). Instead, they were Democrat-appointed economists and the bureaucrats they worked with and influenced. Albeit not ideologically opposed either to social programs or to market intervention, these economists and bureaucrats insisted that social goals be met as efficiently as possible and that market solutions were generally preferable to interventionist ones. Wherever possible, they pushed cost-benefit analyses and reviews within administrative agencies, urged the dismantling of early-twentieth-century market controls, and sought to achieve ends by creating markets for entitlements rather than by imposing standards by fiat. In all this, they shared much with those further to their right.
By the time Ronald Reagan was elected president, the economic style introduced during the Kennedy and Johnson years had become thoroughly entrenched. Indeed, it had become the hegemonic approach to solving all manner of public problems, its ubiquity and self-evidence continually reinforcing each other. Reagan Republicans would employ the economic style, but the ground had been laid for them decades earlier by Democrats. Indeed, Popp Berman argues, Democrats proved far less strategic in using the economic style than Reaganites. Democrats privileged it as a method in context after context and allowed it to subsume their substantive ends. By contrast, Reaganites were more selective and often successfully subordinated it to their substantive ends.
Parker, though, queries whether equality was actually the guiding principle in the pre-efficiency era: