One of the main discipline areas in which offers its professional services  and has been widely recognized for the quality of the services is the Phase I Environmental Site Assessments also known as Environmental Due Diligences. This kind of services has been offered for a wide variety of clients of all kind including housing development companies passing through self-service stores and combined cycle power plants in other to determine the environmental feasibility of a proposed project and if it is the case estimate the time and costs associated with the environmental liabilities elimination.

perform the Phase I Environmental Site Assessments in accordance with the standards established by the American Society for Testing and Materials (ASTM) for this type of study, using the ASTM E 1527-05 Standard Practice for Environmental Site Assessment: Phase I ESA Process and ASTM E 1528-06 Standard Practice for Environmental Site Assessment Transaction Screen Process as a guideline. Phase I Environmental Site Assessments are conducted, to the extent possible, in accordance with the Kaiser Consultores practices, which meets or exceeds the ASTM standards established for the performance of this type of studies. However, it must be noted that there are significant limitations regarding the availability of information in Mexico in comparison to the United States of America. For example, databases identifying sites where releases of hazardous substances have occurred or may potentially have occurred, such as the CERCLIS database maintained by the U.S. EPA, are not available in Mexico and Mexican authorities published on June, 2003, an equivalent to the Freedom of Information Act. In that sense Kaiser Consultores obtain information relevant to the Phase I Environmental Site Assessment that is publicly available, obtainable from its source within reasonable time and cost constraints, and practically revisable.

Kaiser Consultores has represented the interests of both, buyers and sellers as well as third parties such as Investment Funds and Environmental Lawyers Firms  in this kind of services.