As Oil & Gas operations consolidate and expand, the need for due diligence becomes critical during property and asset transfers to ensure related environmental and financial liabilities are identified for proper risk management. In addition, many operators are evaluating historic or legacy assets that may contain issues that are difficult to identify without the proper knowledge base and field experience. ALL uses a Multi-Tiered Approach when performing due diligence evaluations. This process allows for efficient evaluation of large numbers of assets within a short amount of time when coupled with the newest technology, information, and communication resources. This assures that both historical conventional issues, as well as modern and potentially problematic issues that are associated with the current regulatory settings are identified and quantified. To evaluate assets being acquired, ALL utilizes current best practices recognized and accepted within the environmental, financial, and engineering marketplaces.