and that the evidence was exculpatory because it might show the blood type of the person who deposited the semen was not the same as his client’s. Defense counsel argued that the loss of this “potentially exculpatory” evidence occurred because of the “omission or ... negligence” of the Government or its agents. II R. 74-76.
The trial judge said he did not see how the rape kit was exculpatory and ruled that Dr. Harris could testify he found spermatozoa on Quiver’s body. However, he said the Government could not introduce the crime lab report in evidence. II R. 76-78.
During cross-examination, Dr. Harris testified he tested the moisture to see if it was semen and combed the pubic hair so the crime lab could determine if any pubic hair on the body matched that of the defendant. II R. 150-51. He said he gave this evidence to an examining officer with the Bureau of Indian Affairs, who in turn gave it to the F.B.I. Some of the evidence, however, was lost, and Dr. Harris testified he had not received any report back on it. During redirect examination, Dr. Harris testified he found “multiple, well-formed sperm” from the smear he made from the wet spot near the victim’s anus. II R. 152-53.
On appeal, Soundingsides argues that the lost evidence Dr. Harris testified about “could have exonerated” him from any wrongdoing in the case and that the indictment should have been dismissed or Dr. Harris should not have been allowed to testify and the government attorney not allowed to refer to the spermatozoa found on Quiver’s body. Appellant’s Brief at 23-24. Soundingsides does not claim the Government and State Crime Lab did not act in good faith or in accord with their normal procedures.
The Supreme Court laid down a two-part “standard of constitutional materiality” to be applied when, while “acting in good faith and in accord with their normal practice,” Trombetta, 467 U.S. at 488-89, 104 S.Ct. at 2533-34 quoting Killian v. United States, 368 U.S. 231, 242, 82 S.Ct. 302, 308, 7 L.Ed.2d 256 (1961), Government officials nevertheless lose or destroy evidence the defendant deems exculpatory:
[Ejvidence must both possess an exculpatory value that was apparent before the evidence was destroyed, and be of such a nature that the defendant would be unable to obtain comparable evidence by other reasonably available means.
Trombetta, 467 U.S. at 489, 104 S.Ct. at 2534.
Assuming Soundingsides would be unable to obtain comparable evidence by other reasonably available means, he nevertheless has failed to demonstrate that the lost evidence had sufficient exculpatory value to satisfy Trombetta’s standard of constitutional materiality. “Trombetta makes clear that the mere possibility that evidence might aid the defense does not satisfy the constitutional materiality standard____” United States v. Fletcher, 801 F.2d 1222, 1225 (10th Cir.1986), quoting United States v. Webster, 750 F.2d 307, 333 (5th Cir.1984), cert. denied, 471 U.S. 1106, 105 S.Ct. 2340, 85 L.Ed.2d 855 (1985). The exculpatory potential of evidence must be based on more than “speculation and conjecture.” United States v. Martinez, 744 F.2d 76, 80 (10th Cir.1984).
As was explained in Hilliard v. Spalding, 719 F.2d 1443 (9th Cir.1983), in a prosecution for rape, seminal fluid found in the vaginal tract is extremely probative of whether the accused committed the rape for which he is on trial:
In a rape case, it is possible to test a sample of seminal fluid taken from the victim and compare it with samples of a defendant’s saliva and blood. The results of such a test cannot positively identify a defendant as the perpetrator, but the test can conclusively exculpate an individual if the blood types do not match.
719 F.2d at 1445 (emphasis in original). Because of the strong possibility that the victim’s seminal sample might exculpate a rape defendant, the court ruled that since the Government had lost the sample and deprived the defendant of an opportunity to test it, the court would assume that the