Common use of Sample Collection Procedures Clause in Contracts

Sample Collection Procedures. Describe how sampling points will be selected in the field, and how these locations will be documented and marked for future reference. If a sampling grid will be used, describe the dimensions and lay out planned for the grid. Outline sequentially or step-by-step the procedure for collecting a sample for each medium and each different sampling technique. Include a description of sampling equipment (including materials of construction), field measurements, sample preservation, housekeeping/ cleanliness techniques and well purging procedures. The procedure described must ensure that a representative sample is collected, and that sample handling does not result in cross contamination or unnecessary loss of contaminants. Special care in sample handling for volatile organic samples must be addressed. Method 5035 should be used for soil samples that will be analyzed for VOCs by an off- site laboratory. Describe how and when duplicates, blanks, laboratory quality control samples and background samples will be collected. If samples will be filtered, describe filtration equipment and procedures. The Owner/Operator or Respondent must include sufficient maps and tables to fully describe the sampling effort. This shall include, at a minimum, a map showing all proposed sampling locations and tables that contain the following information: Sampling Location/Interval Analytical Parameters (e.g., volatile organic compounds) Analytical Method Number Medium Preservation Method Holding Times (as specified in USEPA SW 846) Containers (quantity, size, type plus footnotes that discuss source and grade of containers) Sample Description/Area (include QC samples) Analytical Parameters Analytical Method Number Preparation or Extraction Method Number Medium Number of Sample Sites