SPADA Meeting Book

desired, collect plant roots along with the soil and place all samples on ice immediately 318 after collection. If collecting soils on military ranges or near former military ranges, 319 samplers should review their organization’s sampling and safety procedures. Unexploded 320 ordinances could pose a significant hazard and a sweep of the area may be recommended 321 prior to any soil sampling. Special shovels and trowels made from an aluminum bronze 322 copper alloy can be used to prevent an incident if a hazard is found while sampling. 326 Organisms or molecules of interest may percolate through the soil after a rain or snow 327 melt event. Soil samples can be collected from the different horizons to test the extent of 328 contamination and effectiveness of remediation. For sampling within each horizon, a soil 329 auger ranging from 3 to 12 inches can be used. Approximate soil horizon depths can be 330 researched using the web soil survey (Table 2) but should be confirmed in the field. 331 Samples should be collected from roughly the middle of the horizon. For aseptic 332 collection, a sterile spatula can be used to first remove a few cm of soil from the outer 333 circumference of the soil sample that had contact with the auger during collection. A 334 second sterile spatula can be used to collect the inner core sample from the center 335 opening of the auger. 323 324 325 8.3 Profile Sampling In this context, profile sampling relates to soil decontamination and remediation.

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8.4 Sample Types and Practices

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