Any UST system release assessments require environmental sampling of soil and/or ground water. These assessments may occur during such procedures as closing petroleum USTs, environmental assessments and at intervals during corrective action. Proper laboratory analysis of samples is critical to decision-making. This is to identify the analytical method that laboratories should use when processing samples for the TN UST program. Responsible Parties (RPs), Corrective Action Contractors (CACs) and others should ensure that the proper method is used by the laboratory. TN UST staff will review all reports to ensure the proper method was used. Ensure other requirements specified in guidance materials are followed.
Policy. During an UST system release assessment, soil and/or groundwater samples shall be analyzed by a laboratory based on the type of product stored. If the type of product stored is unknown, all samples shall be required to analyze for all chemicals of concern (COCs). Please refer to Reference 1 and Reference 2.
Method 8260b, 8270c SIM, 8310, 200.7, and 6010/3050 are available at www.epa.gov