Lean Thinking Brings Powerful Financial Incentives to Resource Conservation and Pollution Prevention Improvement. Pollution prevention adherents often advocate a “pollution prevention pays” theme to promote more sustainable production behavior. As well, pollution prevention guidance encourages facilities to examine the total costs of polluting behavior to ensure investment decisions are fairly and completely evaluated. This “Total Cost Assessment” approach, according to advocates, can produce a strong business case (., a return on investment commensurate with internal hurdle rate requirements) for pollution prevention. From a financial decision making standpoint, Lean brings to the resource conservation financial equation very.