Mississippi Administrative Code
Title 11 - Mississippi Department of Environmental Quality
Part 5 - Underground Storage Tank Regulations
Chapter 2 - Mississippi Commission on Environmental Quality Underground Storage Tanks Regulations Technical Standards and Corrective Action Requirements for Owners and Operators of Underground Storage Tanks (UST) (Adopted March 22, 1989; Amended August 25, 2011, Last Amended August 23, 2018)
Appendix 11-5-2-280.4 - GUIDELINES FOR THE PERMANENT CLOSURE OF PETROLEUM UNDERGROUND STORAGE TANK SYSTEMS
Section 11-5-2-280.4-3 - SAMPLING PROCEDURES
Section 11-5-2-280.4-3-3.1 - General Sampling Requirements
Current through September 24, 2024
Soil and/or groundwater samples must be collected to determine if a release has occurred. The importance of good sampling procedures is critical to the assessment of a site at a UST closure. Since gasoline and some other petroleum products consist largely of volatile organic compounds, special care in collecting samples is required. Special precautions must be taken to be certain that samples collected from each site are representative of the soil and/or groundwater at that location and that the sample is neither altered nor contaminated by the sampling and handling procedure.
When collecting samples for Benzene, Toluene, Ethylbenzene and Xylenes (BTEX) analysis, new disposable latex or nitrile gloves must be worn at each sample collection location. When collecting samples for Polynuclear Aromatic Hydrocarbons (PAH) analysis, new disposable vinyl or nitrile gloves must be worn at each sample collection location. Latex is not a suitable glove material when collecting samples for PAH analysis since PAH's have an affinity for latex.
The minimum number of sample containers (i.e. aliquots) that are stated in this document are only intended to be guidance. Always contact your laboratory to determine the sample size and aliquots that are required for a particular laboratory.
All samples must be placed in proper containers immediately upon collection, properly packaged and labeled with the following minimum information:
1. facility name
2. sample location (e.g. NW corner of tank bed, Sample #1, etc.)
3. date and time samples were collected
4. depth samples were collected
5. person collecting samples
6. analytical test(s) required
All samples must be placed on ice immediately after collection and shipped to the laboratory within 24 hours of collection.
