Handbook of Forensic Services (pdf) - FBI

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Handbook of Forens c Serv ces 2007 Soil Examinations So l exam nat ons can determ ne whether so ls share a common or g n by compar ng color, texture, and compos t on. Questions concerning soil evidence should be directed to 703-632-8449. Follow the ev dence subm ss on d rect ons, nclud ng Requesting Evidence Examinations and Packaging and Shipping Evidence. ß ß ß ß ß Collect so l samples as soon as poss ble, because the so l at the cr me scene can change dramat cally. Collect so l samples from the mmed ate cr me scene area and from the log cal access and escape route(s). Collect so l samples where there are not ceable changes n color, texture, and compos t on. Collect so l samples at a depth that s cons stent w th the depth from wh ch the quest oned so l may have or g nated. If poss ble, collect so l samples from al b areas such as the yard or work area of the suspect(s). 132
ß ß ß Handbook of Forens c Serv ces 2007 Subm t a map dent fy ng so l-sample locat ons. Do not remove so l adher ng to shoes, cloth ng, and tools. Do not process tools for latent pr nts. A r-dry the so l and the cloth ng, and package separately n paper bags. Carefully remove so l adher ng to veh cles. A r-dry the so l, and package separately n paper bags. ß Sh p known and quest oned debr s separately to avo d contam nat on. Subm t known and quest oned so l n leakproof conta ners such as film canisters or plastic pill bottles. Do not use paper envelopes or glass conta ners. Pack to keep lumps ntact. Back to the top Special-Event and Situational Awareness Support Visual information specialists travel to the field and conduct d g tal s te/venue surveys. These operat ons nclude three-d mens onal laser scann ng and documentat on of phys cal structures and objects, 360-degree spher cal v deo capture, and geograph c nformat on system (GIS) mapp ng. 133
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Handbook of Forensic Services (pdf) - FBI

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