SPADA Draft Documents

desired, collect plant roots along with the soil and place all samples on ice immediately 315 after collection. If collecting soils on military ranges or near former military ranges, 316 samplers should review their organization’s sampling and safety procedures. Unexploded 317 ordinances could pose a significant hazard and a sweep of the area may be recommended 318 prior to any soil sampling. Special shovels and trowels made from an aluminum bronze 319 copper alloy can be used to prevent an incident if a hazard is found while sampling. 323 Organisms or molecules of interest may percolate through the soil after a rain or snow 324 melt event. Soil samples can be collected from the different horizons to test the extent of 325 contamination and effectiveness of remediation. For sampling within each horizon, a soil 326 auger ranging from 3 to 12 inches can be used. Approximate soil horizon depths can be 327 researched using the web soil survey (Table 2) but should be confirmed in the field. 328 Samples should be collected from roughly the middle of the horizon. For aseptic 329 collection, a sterile spatula can be used to first remove a few cm of soil from the outer 330 circumference of the soil sample that had contact with the auger during collection. A 331 second sterile spatula can be used to collect the inner core sample from the center 332 opening of the auger. 336 particular area, thus exercising judgement in selecting sampling sites, and therefore are 337 320 321 322 8.3 Profile Sampling In this context, profile sampling relates to soil decontamination and remediation. 333 334 335 8.4 Sample Types Judgement samples are those resulting from an individual deliberately avoiding a

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