Federal Regulations for environmental compliance typically incorporate a group of analytical chemistry methods which are specific for that regulation. These test methods are listed in SW-846 and coupled with the new MIR updates are considered appropriate for RCRA applications.
For example, if you are sampling groundwater under the Solid Waste Rules, you should use 8000-series methods for organics and 6000-series methods for inorganics. Applications for the Solid Waste reporting are groundwater, surface water detection monitoring and leachate discharge analysis.
It is always best to contact your ASI Project Manager to ensure the appropriate methods are used.