In any criminal investigation, the validity of information derived from examination of the physical evidence depends upon the care with which the evidence has been protected from contamination. In other words, if the evidence has been improperly collected, handled, or stored, its value may be destroyed and no amount of laboratory work will be able to restore it. Therefore, it is important that items of evidence be collected, handled, and stored in a way that will ensure their integrity. In doing so, the likelihood is increased that useful information can be obtained by examination and that the item will be considered admissible in a court of law.
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Protect the evidence |
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Protect others |
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Consider all types of forensic evidence |
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Chain of custody starts at the crime scene – keep it short |
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Document location with notes, sketches, and/or photographs |
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Mark evidence and/or packaging with your case number, item number, victim name, deputy initials, date, time and description of evidence or as required by your agency |
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Package all evidence separately |
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Allow wet or damp items to air-dry |
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Obtain standards if needed for a comparison of evidence |
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Use packaging that is appropriate for the specific type of evidence such as paper bags, envelopes, plastic bags*, cardboard boxes, tamper-proof sealing, etc. |
*Keep in mind that storing evidence in plastic bags may lead to hazardous molds, evidence damage, or otherwise be compromised.
RESPONSIBILITY FOR IMPOUNDING EVIDENCE OR PROPERTY
Impounding Officer = For the purpose of this document, the term “impounding officer” will mean the employee who prepares the property for submission to the Property-Evidence Office.
The employee who recovers evidence or finds property is responsible for transporting and booking, except when that responsibility is assumed by, or assigned to, another employee. Ultimately, the person who is named on the evidence receipt as having seized an item will be held accountable for that item. All items of property obtained must be placed under the control of the Property Evidence Unit prior to the end of the officers shift, i.e., slam locker, refrigerated lockers, temporary evidence lockers, Impound lot or vehicle bays weather at East Precinct or Headquarters..
Every attempt possible to identify and notify the owner or custodian of property taken into our custody will be made. A copy of the property evidence receipt must be left with the owner, or custodian prior to any item of property obtained being transported from the location. A copy of the receipt will be left in a conspicuous location if no responsible person is present to take delivery. The receipt must contain all information describing each item of property obtained, the person who took possession of the item and the date and time they took possession.
The impounding officer must complete a detailed report documenting the circumstances by which the property came into their possession. This report should be submitted at the end of their shift or as soon as possible if their supervisor approves a delay.
Per ORS 133.455 Receipts for property taken from person in custody; penalty. (1) Whenever any jailer, peace officer or health officer takes or receives any money or other valuables from any person in custody for safekeeping or for other purposes, the officer or jailer receiving such valuables or money forthwith shall tender one of duplicate receipts for the property being surrendered to the person in custody. If possible, the person in custody shall countersign both the original and duplicate receipts. If the person is unable to sign the receipts or receive the duplicate thereof, the same shall be signed by and delivered to the person when reasonably possible. A file of the original receipts shall be kept for at least six months after the money or valuables have been returned to the person in custody, the agent or representative of the person or other person entitled to the same.
(2) A person violating any of the
provisions of subsection (1) of this section commits a Class B misdemeanor.
[Formerly 142.210]
Washington County Ordinances
dealing with inventories and impounding of property.
Washington County Sheriff's policy dealing with inventories and impounding of property.
All property coming into the custody of the Sheriff’s Office and submitted to the Property-Evidence Office will be handled as follows:
Tag or package all items in the smallest acceptable container.
Date and initial over the seal if the item is heat sealed or secured with red evidence tape.
Acceptable containers for the submission of evidence are any paper or plastic bag issued by the Property-Evidence Office.
When size prevents packaging, use a twist tag. If a twist tag is not useable, an adhesive tag may be used, but must be affixed to the item in a manner and location that will not deface the property or destroy its evidentiary value.
Tag each item with the appropriately colored evidence tag or place the item in the preprinted envelope or bag provided by the Property-Evidence Office. Do not use the tag to seal the packaging.
The impounding officer must provide complete and accurate information on all spaces of the evidence envelope or tag. This includes the case number, item number, victim name, deputy name, date and time seized, seizing person’s name, description of the item (miscellaneous portion of the tag), and the location from which the item was seized (if space is provided on the tag). INDICATE IF THE ITEM IS TO BE DESTROYED.
Have all serial numbered items run for stolen through LEDS/NCIC prior to submitting them to the Property-Evidence Office. For all firearms, the impounding officer must attach a copy of the LEDS and NCIC printout to the yellow and green property-evidence report Provide the owner’s information to the Property-Evidence Office.
Items which should be separated from other evidence:
Sexual assault kits – refrigeration
Drugs – smallest bag possible, separate from paraphernalia
Blood, urine – refrigeration
Money – currency envelope
Syringes, razor blades – infectious waste container
Complete a property-evidence report.
Submit the property to the appropriate location at Headquarters or East Precinct depending on your assignment. Both of these locations have secure evidence lockers available 24 hours a day.
Place the yellow and green copy in the property-evidence basket in the evidence processing room.
There are a variety of packaging types that can be used for packaging evidence. The type you choose depends on the type of evidence, the condition of the evidence, and the examination(s) you want the laboratory to perform. Use the information in Table 1 below or consult the section specific to the type of evidence you have to select the proper way to package it. All packaging types need to be clean and unused (e.g. no recycled grocery bags).
| Packaging Type | Uses |
| Paper bags or envelopes | Just about everything should be packaged in paper. Plastic packaging is hard to store in the evidence room and plastic also degrades possible latent fingerprints. The only exception to this would be drugs, items contaminated by hazardous materials, and paper items being submitted for fingerprinting. These items should be packaged in plastic. Remember when packaging to use the smallest bag possible that will not compromise possible latent fingerprints. |
| Plastic bags or Ziplocks | A material such as powder drug samples biological material that includes marijuana, psilocybin mushrooms, blood or semen stained items, condoms, etc. Items MUST be dried prior to packaging. |
| Metal cans | Arson evidence |
| Plastic buckets | Samples from clandestine laboratories that are individually packaged in glass vials and set in an absorbent material (e.g. vermiculite, kitty litter, etc.) in the plastic bucket. |
| Glass vials | Liquid drug samples, syringe contents, samples from clandestine laboratory, etc. |
| Paperfolds and Post-It notes | Small pieces of trace evidence, hairs, fibers, minute glass particles, paint chips, residue amounts of powder drugs, etc. Place inside a larger paper envelope. Use a Post-It note by placing the trace evidence on the adhesive and folding the Post-It in half to cover the adhesive. |
| Cardboard boxes | Firearms, knives, large pieces of plate glass, a piece of flooring with a shoeprint, etc. Offers protection from sharp edges and the depth protects one surface of the evidence from rubbing. |
A proper seal ensures that evidence has not been accessed, altered, compromised, or lost during storage. A good seal is tamper-proof, is detectable if tampered with, and is initialed and dated across the seal.
Evidence Sealing
| Do Use | Do Not Use |
| Evidence tape (tamper-proof) | STAPLES (can easily be removed or tampered with) |
| Heat seals | Masking tape or Scotch tape |
| Paper clips, binder clips, etc. |
Revised 11/11/03