so how do you intepret what Grime said....
In order for the dog to locate the source the blood must have 'dried' in situ. Any
'wetting' once dried will not affect the dog's abilities.
Blood that is subjected to dilution by precipitation or other substantial water source
prior to drying will soak into the ground or other absorbent material. This may dilute
the scent to an unacceptable leve1 for accurate location.
It is possible however that the EVRD will locate the scent source as it would for 'dead body' scent. Forensic testing may not produce evidence but any alert may provide
intelligence to support other factors in the investigation of a crime.
If you read the actual document from Martin Grime, this has all the correct punctuation and is formatted in a way that is easier to read. The bit about the EVRD is on a separate paragraph that indicates its not expressly linked to the paragraph above. If he wanted to convey the fact that the EVRD dog would alert to diluted blood but the CSI wouldn’t he would surely have carried on the existing paragraph with a comma and then something like “,however the EVRD dog will alert to diluted blood…."
When he refers to the scent source he is referring to the fact Eddie was trained on both blood and cadaver odour so will alert to both.
He is asked the question in the rogatory interview
“The dog EVRD also alerts to blood from a live human being or only from a cadaver”
The dog EVRD is trained using whole and disintegrated material, blood, bone tissue, teeth, etc. and decomposed cross-contaminants. The dog will recognize all or parts of a human cadaver. He is not trained for 'live' human odours; no trained dog will recognize the smell of 'fresh blood'.
They find, however, and give the alert for dried blood from a live human being.He explicitly states that they give an alert for dried blood, not blood that hasn’t dried in situ and been diluted before drying.