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Unformatted text preview: Substrate controls is the sampling of surfaces near by the crime scene where evidence is not suspected. Evidence is often times delivered through the mail. If there are any flaws in evidence packaging or in its description, the evidence is returned to sender. Tyvex suits are worn by investigators, anything they wear that is not to be thrown out, must go through a decontamination process. 4 th amendment rights protect people against all searches without probable cause. There are certain emergencies when searches can be done quickly, like in the event evidence might be destroyed to soon....
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- Spring '09