RSBM
Anzac, in this particular instance, where Cheryl was found "partially inside of the culvert" on the west side, wouldn't the pool of water downstream from her be of interest because evidence would collect there? I'm talking about the water you can see in front of the opening of the culvert on the western side. It just seems logical that it's a spot where anything that floated downstream from where Cheryl was originally would get stuck, tangled in the brush that was partially inside that opening area of the culvert, etc., before the water moves into a smaller/deeper stream and heads south again.
I hope this makes sense. Thanks!
Well we don't know the time of the pictures. Maybe they had tape up, then took it down. We move ours around all the time. You can't just mark off a big area either and call it good. You have to have an operational or investigative reason to put the tape up. And if there's nothing on the grass, then it is ok for people to walk around on it, especially if the body has been removed.
Generally speaking, when a body is in the water, there isn't much associated with it. Things that fell in the water fell in where they fell in. I mean, a backpack or purse or something else might float downstream. But then you'd see it, mark it, photograph it, bag it.
Forensically the water dilutes most everything. You certainly don't want to or need to sample any bodily fluids that are leaking in the water. (this is actually something of a blood borne pathogen hazard for rescuers/LE)
The process would be something like this:
- LE take photos of scene, secure corpse if there's a risk it would move downstream
- LE scans immediate area for signs of entry, clues, evidence etc. tape off what you need to look at later
- wait for ME to arrive
- ME takes their own photos
- LE/fire/SAR remove the body from the water
- ME inspects body, takes photos, removes ID/effects
- LE takes a look
- ME takes body (if you're interested we have two types of body bags we use -- one is more of a mesh that we use for drowning victims, to allow the water to drain out...)
- LE goes back to taped off area to look at items more closely and photograph/bag them
The sequence could obviously move around a bit. WA state laws govern a few things here. We can move a body (minimally) to get it to the ME. The ME is the one that removes the ID etc
So, partially inside a culvert may mean that her body was in the water completely, not on either bank, and partially in under the culvert. There's no need to tape off the culvert because it isn't very accessible to the public in the first place. I doubt there was much evidence if any on the west side but really you'd need to be there to decide that. The photos really don't show enough to decide one way or the other.
Water also makes it hard to decide what evidence is interesting. Obviously a phone and a wallet are, but telling the difference between a day old can of beer and a 2 year old can of beer in the water is hard. Out on land we may say "ooh that looks fresh/recent" but in water we just tend to leave things alone unless it is obvious. I will admit to fishing out some empty vodka bottles once in a shooting involving Russian gentlemen but we eventually decided they'd been in the water long enough to not really matter (plus we found the weapon).
The only times we get REALLY granular about searching an area are small bones/teeth, shell casings. Most items of interest are bigger than that and obvious enough to identify and collect.
We had one homicide that involved packing peanuts as evidence (I kid you not) and we had to document/collect ASAP because of the wind blowing them. It was important because it was the trail of the perps.
I can also post links to the relevant state laws if anyone is interested.