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Handbook of Forensic Services (pdf) - FBI

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<strong>Handbook</strong> <strong>of</strong> Forens c Serv ces 2007<br />

Soil Examinations<br />

So l exam nat ons can determ ne whether so ls<br />

share a common or g n by compar ng color,<br />

texture, and compos t on.<br />

Questions concerning soil evidence should be<br />

directed to 703-632-8449. Follow the ev dence<br />

subm ss on d rect ons, nclud ng Requesting<br />

Evidence Examinations and Packaging and<br />

Shipping Evidence.<br />

ß<br />

ß<br />

ß<br />

ß<br />

ß<br />

Collect so l samples as soon as poss ble,<br />

because the so l at the cr me scene can<br />

change dramat cally.<br />

Collect so l samples from the mmed ate cr me<br />

scene area and from the log cal access and<br />

escape route(s).<br />

Collect so l samples where there are<br />

not ceable changes n color, texture, and<br />

compos t on.<br />

Collect so l samples at a depth that s<br />

cons stent w th the depth from wh ch the<br />

quest oned so l may have or g nated.<br />

If poss ble, collect so l samples from al b<br />

areas such as the yard or work area <strong>of</strong> the<br />

suspect(s).<br />

132

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