📄 Cross-examination of Collin Yamauchi (afternoon, part 1) — Tuesday, May 30, 1995
Address:
C:\DEPT103\CRIMINAL\1995\MAY\30\CROSS-EXAMINATION-OF-COLLIN-YA.DOC
TRIAL
▲ Day 84 of 167

Cross-examination of Collin Yamauchi (afternoon, part 1)

Witness: Collin Yamauchi
Examiner: Barry Scheck
Called by: Prosecution • Date: Tuesday, May 30, 1995 • Utterances: 465
Barry Scheck continued cross-examining LAPD criminalist Collin Yamauchi, pressing him on evidence handling protocols: his multiple unexplained entries and exits from the evidence processing room while working on the Bundy swatches and Rockingham glove, the absence of original plastic bag packaging for the swatches, and the condition and chain of custody of OJ Simpson's blood vial. The centerpiece was establishing that the vial arrived at the lab unsealed — contrary to written LAPD protocol — and probing a discrepancy between what Yamauchi allegedly told defense investigators (that he removed just a drop or two of blood) versus what his notes reflect (three-quarters of a milliliter).
1 (The following proceedings were held in open court, in the presence of the jury:)
2 THE COURT:

Thank you, ladies and gentlemen. Please be seated. Mr. Yamauchi, would you resume the witness stand, please. All right. Let the record reflect we've been rejoined by all the members of our jury panel. And, Mr. Scheck, you may conclude your cross-examination.

3 MR. SCHECK:

Thank you, your Honor.

4 MR. SCHECK:

Mr. Yamauchi, when you were taking samples from the glove, were you in a hurry?

5 MR. YAMAUCHI:

No.

6 MR. SCHECK:

When you were cutting the Bundy swatches, were you in a hurry?

7 MR. YAMAUCHI:

No.

8 MR. SCHECK:

Now, you mentioned on direct examination that you have one of these little badges that you put up next to the door, and that admits you into the evidence processing room?

9 MR. YAMAUCHI:

Yes.

10 MR. SCHECK:

And you're familiar with computer printouts entitled "Card transaction reports" that reflect when somebody goes into the evidence processing room?

11 MR. YAMAUCHI:

Yes.

12 MR. SCHECK:

Now, I would like to show you what's already been marked as People's 226, a serology transaction report and I'd like to also show you Defendant's next in order.

13 MR. SCHECK:

What would that be?

14 THE COURT:

1187.

15 MR. SCHECK:

1187.

16 (Deft's 1187 for id = report)
17 MR. SCHECK:

And I'd like you to compare 1187 to 226 and tell us if 1187 is a fair and accurate summary of all the different entries on the transaction report for the--for June 14th into the evidence processing room that bear your name? And just to help you out, it's page 1--

18 MR. HARMON:

Your Honor, objection. 226 is hearsay at this point. It's not in evidence.

19 THE COURT:

Overruled.

20 MR. YAMAUCHI:

What's the door number on the evidence processing room?

21 MR. SCHECK:

18.

22 MR. YAMAUCHI:

Umm, can we confirm that that's the evidence processing room?

23 MR. SCHECK:

Well, the--226 was introduced by the People as the transaction report of that room.

24 MR. HARMON:

Your Honor, I have an objection to that.

25 THE COURT:

That's testifying.

26 MR. HARMON:

That's hearsay, your Honor.

27 THE COURT:

That's testifying, counsel.

28 MR. HARMON:

And I object that that document is hearsay and the witness is unfamiliar with it. No foundation.

29 THE COURT:

Overruled.

30 MR. SCHECK:

Ask you to assume it's door no. 18 and that 226 is a--the transaction report, door no. 18 is the evidence processing room.

31 MR. YAMAUCHI:

Okay. Then if I assume that, then I can go on.

32 MR. SCHECK:

Yes. Thank you.

33 THE COURT:

Do you need a straight edge, Mr. Yamauchi?

34 MR. YAMAUCHI:

Thank you, but I'm okay.

35 THE COURT:

All right.

36 (Brief pause.)
37 MR. SCHECK:

Goes on to page 4.

38 MR. YAMAUCHI:

This one? Okay.

39 MR. SCHECK:

Okay.

40 (Brief pause.)
41 THE COURT:

Mr. Scheck.

42 MR. YAMAUCHI:

Okay.

43 MR. SCHECK:

Is that accurate? Is 1187 accurate?

44 MR. YAMAUCHI:

Under the assumption that this is from the evidence processing room for that particular date, yes, it is.

45 MR. HARMON:

Objection, your Honor. There's no foundation. It's hearsay.

46 THE COURT:

Overruled.

47 MR. SCHECK:

Your Honor, may I display 1187?

48 THE COURT:

Yes.

49 (Brief pause.)
50 MR. SCHECK:

Okay. Now, the transaction record would indicate--these are all entries, correct? That's how the system works?

51 MR. YAMAUCHI:

Yes.

52 MR. SCHECK:

All right. So it shows you entering the evidence processing room at 8:17 and then presumably sometime between 8:17 and 8:31, you left because you entered again at 8:31, correct?

53 MR. YAMAUCHI:

That's a good assumption.

54 MR. SCHECK:

Okay. Now, let's look at how many times you left between 9:00 and 10:00 o'clock, okay? At 9--we see you reentering at 9:15, correct?

55 MR. YAMAUCHI:

Yes.

56 MR. SCHECK:

And we see you reentering at 9:27?

57 MR. YAMAUCHI:

Yes.

58 MR. SCHECK:

So that would mean that sometime between 9:15 and 9:27, you left the evidence processing room and then reentered?

59 MR. YAMAUCHI:

That's a good assumption.

60 MR. SCHECK:

And then between 9:27 and 9:49, you left and then reentered at 9:49?

61 MR. YAMAUCHI:

Yes. That's reasonable.

62 MR. SCHECK:

And at 9:49--between 9:49 and 9:59, you left and reentered again at 9:59?

63 MR. YAMAUCHI:

Right.

64 MR. SCHECK:

And all those exits and entries between 9:15 and 9:59 occurred during the period of time that you were manipulating and cutting samples from the glove?

65 MR. HARMON:

Objection. That misstates the testimony.

66 THE COURT:

Sustained.

67 MR. SCHECK:

All right. If we assume that you started manipulating and sampling the glove sometime after 9:00 A.M., would it be fair to say that you entered and exited the evidence processing room at the times indicated on 1187 during the period that you were manipulating and cutting the glove?

68 MR. HARMON:

Objection. Calls for speculation, there's no foundation.

69 THE COURT:

Sustained.

70 MR. SCHECK:

All right. Do you recall entering and leaving the evidence processing room while you were manipulating and cutting the glove?

71 MR. YAMAUCHI:

Well, to begin with, we just went over that section of my notes, and, yeah, I'd say it was reasonable to assume that sometime between I guess--where was it--9:00 and 10:00 or so, that that's when that was analyzed. But I don't remember specific details as to what I was doing and what time I took samples and at certain points, I would have had to go get the photographer too and have him come by to photograph that item. So I don't know.

72 MR. SCHECK:

The photographer in question is who, if you recall?

73 MR. YAMAUCHI:

It's either John Taggard or Mike Wilson.

74 MR. SCHECK:

Well, looking at the entries on 226, tell us entries you see on the morning of June 14th for Taggard and Wilson and the times.

75 MR. HARMON:

Objection. Calls for speculation, no foundation.

76 THE COURT:

Overruled.

77 MR. YAMAUCHI:

John Taggard, 8:24.

78 MR. SCHECK:

Okay. Hold on.

79 MR. YAMAUCHI:

Uh-huh.

80 MR. SCHECK:

Given your reconstruction of the events of the morning of June 14th, do you believe that Taggard entered at 8:24 and took a picture of the glove before you manipulated and cut it?

81 MR. HARMON:

Objection. Calls for speculation.

82 THE COURT:

Sustained. Rephrase the question.

83 MR. SCHECK:

As best you can recall, given your notes and records and recollection, do you believe--did Taggard come into the evidence processing room at 8:27 and take a picture of the glove?

84 MR. YAMAUCHI:

Like I said before, I don't know if it was John Taggard or Mike Wilson.

85 MR. SCHECK:

All right. Would you look at the transaction report and see if there's--when the next entry for Taggard or Wilson is?

86 MR. YAMAUCHI:

For Wilson, it's 8:47.

87 MR. SCHECK:

All right. Do you recall Wilson entering the evidence processing room at 8:47 and taking a picture of the glove?

88 MR. YAMAUCHI:

I don't recall which one of them did it. I asked John Taggard to take the photograph and I'm not sure if he did or if Mike Wilson did.

89 MR. SCHECK:

So--but you are certain, are you not, that the photograph taken of the glove was after you had manipulated and cut it?

90 MR. YAMAUCHI:

No. I had it photoed beforehand, before I did the cutting.

91 MR. SCHECK:

Didn't you testify on direct examination that the photograph of the glove was done after you initialed it, manipulated it and cut it?

92 MR. YAMAUCHI:

No, I don't believe so.

93 MR. HARMON:

Objection. Misstates the testimony.

94 THE COURT:

Sustained. Rephrase the question.

95 MR. SCHECK:

Do you recall what you said on direct testimony with respect to when the glove was photographed; before or after you manipulated it and cut it?

96 THE COURT:

On June 14th.

97 MR. SCHECK:

I'm sorry?

98 THE COURT:

On June 14th.

99 MR. SCHECK:

On June 14th.

100 MR. YAMAUCHI:

I believe I said before because the whole idea in the--behind photographing it before is because I was going to cut it. So I wanted to have a photo documentation of it as how it looked before I did the cuttings on it.

101 MR. SCHECK:

Have you ever seen a photograph of the Rockingham glove in a condition prior to the cuts you made on it?

102 MR. HARMON:

Objection. Assumes facts not in evidence.

103 THE COURT:

Overruled.

104 MR. YAMAUCHI:

Seen quite a few photographs of that. I--I don't know if those were the ones or the set that I had requested.

105 MR. SCHECK:

You requested a set of photographs from the Prosecutors to review before you testified?

106 MR. YAMAUCHI:

No, I didn't. I--for that particular issue, I would have to go back and check the records to make sure that this set that I've seen in the past is the set that happened on that date and time.

107 MR. SCHECK:

Where would you go to check?

108 MR. YAMAUCHI:

Hmm, I'd probably have to talk to Mr. Matheson.

109 MR. SCHECK:

All right. And after talking with Mr. Matheson, do you believe you could determine whether or not there is in existence a photograph of the Rockingham glove taken at SID that reflects its condition before you manipulated and cut it?

110 MR. YAMAUCHI:

There should be.

111 MR. SCHECK:

I would ask you if you could do that for us.

112 MR. YAMAUCHI:

Right now?

113 MR. SCHECK:

Well, why not? Sometime after court today.

114 MR. YAMAUCHI:

Okay.

115 MR. SCHECK:

Now, when you were--I'm going to bring up page 5 of your notes--I'm sorry--page 3 of your notes with respect to your cutting of the Bundy swatches. Now, you recall on direct examination that you took out some envelopes and paper and you demonstrated for the jury how you--the process that you went through in cutting the swatch, putting it in the bindle, putting it into the test--putting part of it in the test tube and packing it. You went from one to the other. Do you recall that?

116 MR. YAMAUCHI:

Into the microcentrifuge tubes?

117 MR. SCHECK:

Yes.

118 MR. YAMAUCHI:

Yes.

119 MR. SCHECK:

Do you recall standing in front of the jury here and taking out those envelopes and demonstrating?

120 MR. YAMAUCHI:

Yes, I recall that.

121 MR. SCHECK:

Okay. Now, when you did that demonstration, didn't you leave out one aspect of your activities that you engaged in when you cut the swatches?

122 MR. YAMAUCHI:

Well, what aspect is that?

123 MR. SCHECK:

Well, call your attention to your notes, page 3. When you were going through the process of unpacking the bindles, cutting the swatches with the scalpel in one hand, with that same hand putting it into the microcentrifuge tube and before you repackaged them and went to another bindle, didn't you make a drawing?

124 MR. YAMAUCHI:

Yes.

125 MR. SCHECK:

So that was part of your activities as you went through the Bundy samples?

126 MR. YAMAUCHI:

Yes.

127 MR. SCHECK:

You made the drawing that appears here as page 3 of your notes?

128 MR. YAMAUCHI:

Yes.

129 MR. SCHECK:

And when you made that drawing, you tried to be as careful as possible in outlining the shapes of each swatch?

130 MR. YAMAUCHI:

No. I just made an approximate rendition of what I saw.

131 MR. SCHECK:

Well, on some of these, for example, take 49, didn't you make little renditions to try to indicate folds?

132 MR. YAMAUCHI:

Yes.

133 MR. SCHECK:

In particular, I call your attention to the--I think you can see it as item 49 if you travel along the top right-hand--the top of the line, all right, you see six little renditions of swatches, correct?

134 MR. YAMAUCHI:

Correct.

135 MR. SCHECK:

And the fourth one over from the left is drawn in such a way to indicate a fold.

136 MR. YAMAUCHI:

Yes.

137 MR. SCHECK:

And many of the other drawings here, you tried your best to indicate irregularities in the sizes and shapes of the swatches.

138 MR. YAMAUCHI:

Yes. I try to do that approximately.

139 MR. SCHECK:

And you didn't take a picture of the swatches?

140 MR. YAMAUCHI:

No.

141 MR. SCHECK:

That's not a practice in your laboratory?

142 MR. YAMAUCHI:

No, it's not. It's never been an issue.

143 MR. SCHECK:

Okay. Now, this process of cutting the swatches and drawing them you did carefully?

144 MR. YAMAUCHI:

Well, I took some care into it. But keep in mind, these are approximations. I don't want to say that they're exact duplicates of the exact size of them.

145 MR. SCHECK:

No. I'm not talking about the drawings.

146 MR. YAMAUCHI:

Just to get a general idea.

147 MR. SCHECK:

I'm not talking now about the drawings. I'm talking about the process of opening the bindles, cutting the swatches with one hand, putting the swatches into the microfuge tube, making your picture, repackaging the swatches. You did all that carefully?

148 MR. YAMAUCHI:

Of course.

149 MR. SCHECK:

You wanted to--you didn't want to rush through that, did you?

150 MR. YAMAUCHI:

No.

151 MR. SCHECK:

Because you weren't changing gloves?

152 MR. YAMAUCHI:

Well, if something got on my gloves, I would change it, or if I had inadvertently touched a swatch or something, then I would change it. But I do my manipulations with the scalpel blade. And so there isn't necessarily a need to change my gloves.

153 MR. SCHECK:

I thought it was your firm testimony--well, I'll rephrase it. I thought it was your testimony that you were sure that you had not touched a swatch with your glove when you went through this manipulation process and cutting process of the Bundy swatches.

154 MR. YAMAUCHI:

You're right. I don't recall touching any swatches.

155 MR. SCHECK:

Okay. You're sure of that?

156 MR. YAMAUCHI:

Yes.

157 MR. SCHECK:

Didn't change your gloves?

158 MR. YAMAUCHI:

I wouldn't see any reason why I would have to. No.

159 MR. SCHECK:

And you actually told us I think this morning that with respect to sample 49, one of these--two of these swatches were actually stuck together and you had to pull them apart?

160 MR. HARMON:

Objection. Asked and answered.

161 THE COURT:

Sustained.

162 MR. SCHECK:

Now, you did these cuttings--well, let's see. 117, there was a total of four swatches?

163 MR. YAMAUCHI:

No. There's two swatches and one control.

164 MR. SCHECK:

Well, two swatches and one control. So that would be three?

165 MR. YAMAUCHI:

In total, yes.

166 MR. SCHECK:

And for sample 49, there was a total of six specimens and one control for a total of seven?

167 MR. YAMAUCHI:

Yes.

168 MR. SCHECK:

And for sample 50, there were four specimens and one control for a total of five?

169 MR. YAMAUCHI:

Yes.

170 MR. SCHECK:

And for sample 48, there were two specimens and one control for a total of three?

171 MR. YAMAUCHI:

Yes.

172 MR. SCHECK:

And for sample 47, there were seven specimens and one control for a total of eight?

173 MR. YAMAUCHI:

Yes.

174 MR. SCHECK:

And you went through this entire process of cutting the swatches with the one hand, putting it into the test tubes, drawing your picture, opening the bindles and closing the bindles, you did all that in one hour?

175 MR. YAMAUCHI:

Yes.

176 MR. SCHECK:

And that would come down to, on an average, about 12 minutes per item?

177 MR. YAMAUCHI:

Yes.

178 MR. SCHECK:

And you're certain that you didn't touch any of the swatches with your glove?

179 MR. YAMAUCHI:

Yes.

180 MR. SCHECK:

And you weren't in a rush.

181 MR. YAMAUCHI:

I wasn't in a rush.

182 MR. SCHECK:

Now, you testified on direct examination to--well, let me go back for just one second. And during this process of doing the swatches, you went in and out of the evidence processing room between 10:00 and 11:00?

183 MR. YAMAUCHI:

Yes.

184 MR. SCHECK:

Yes. That the chart indicates an entry at 10:05, 10:54 and 10:59?

185 MR. YAMAUCHI:

Okay. Yes.

186 MR. SCHECK:

Now, when you received these coin envelopes from Dennis Fung, each of them was closed. I'm talking now about the Bundy samples.

187 MR. YAMAUCHI:

They weren't sealed.

188 MR. SCHECK:

But they were closed?

189 MR. YAMAUCHI:

Yes.

190 MR. SCHECK:

And you opened them up?

191 MR. YAMAUCHI:

Yes.

192 MR. SCHECK:

And you looked at the bindles?

193 MR. YAMAUCHI:

Yes.

194 MR. SCHECK:

And you did not see one initial of Andrea Mazzola on any one of those bindles from the Bundy samples, did you?

195 MR. YAMAUCHI:

Well, if it was there, I didn't note it. I noted the number down there.

196 MR. SCHECK:

And there was no count on the coin envelopes or the bindles indicating the number of swatches that had been originally collected?

197 MR. YAMAUCHI:

No. That wasn't listed on there.

198 MR. SCHECK:

And the original packaging, that is the plastic bags that the swatches were initially put in, those were not preserved or present?

199 MR. YAMAUCHI:

No, I don't recall seeing plastic bags.

200 MR. SCHECK:

All right. And we cannot test now the plastic bags, the blood on the plastic bags to compare that--any DNA typings from that blood with the typings from the swatches, can we?

201 MR. YAMAUCHI:

Well, for one thing, if I didn't see the plastic bags, I really can't even testify as to their existence.

202 MR. SCHECK:

Okay. Have you ever used plastic bags to collect blood swatches?

203 MR. HARMON:

Objection. Beyond the scope.

204 THE COURT:

Sustained. Mr. Scheck, why don't you turn the podium towards the witness, please.

205 MR. SCHECK:

I'm sorry.

206 MR. SCHECK:

In your experience, in the evidence processing room, have you ever seen the plastic bags that the wet swatches are brought in?

207 MR. YAMAUCHI:

Yes. I've seen--I've seen that in my experience and I've used that technique myself.

208 MR. SCHECK:

And invariably, do you not see bloodstains on those plastic bags?

209 MR. YAMAUCHI:

There winds up with them--you know, residual amount of blood left on the plastic.

210 MR. SCHECK:

Now, in your training and readings as a criminalist, have you not been taught that all original packaging of evidence items ought to be preserved as the chain of custody of an item proceeds?

211 MR. HARMON:

Objection. Argumentative, calls for speculation.

212 THE COURT:

Overruled.

213 MR. YAMAUCHI:

Well, that--that's up to an interpretation too because if you think about it, what's important is the swatch itself. That's what's going to be analyzed. This background piece of plastic that it's being placed on is just something that's supporting it. It's--it's not intended to be analyzed. What's intended to be analyzed are the swatches, and that's what initial--or not initially, but eventually gets dried and booked into evidence.

214 MR. SCHECK:

All right. "Chain of custody" refers to the practices of criminalists to ensure that the items collected are actually the items tested and presented in court?

215 MR. YAMAUCHI:

That sounds reasonable.

216 MR. SCHECK:

And in the course of your training with respect to chain of custody, have you not heard that it is a standard practice to preserve all original packaging materials for an item?

217 MR. YAMAUCHI:

Yes. And I think that's specifically designed to look at items of evidence such as a glove or something that's adamant, not--not something that's a blood swatch where you're collecting a stain on the wall or something like that. See, the reason why is, if--if say you have a glove, things can fall off of that, and you would want to preserve those pieces of trace evidence for further analysis. And that's one place where the trace people will look, would be inside the packaging housing that. But when we're talking about a blood swatch, what we're interested in are the types on that particular stain. If you consider that plastic, that's--all that's doing is acting as support to dry the stain and/or transport it. It's not changing any of the types that are on that particular stain. What's important, Mr. Scheck, is the stain itself and the information that can be gained by that.

218 MR. SCHECK:

Well, following through with what you just said, with respect to the original packaging containing traces of the item collected, is it not true that these plastic packages would contain blood from the original swatches?

219 MR. YAMAUCHI:

Yes. But you've got to--

220 MR. SCHECK:

Is that true; yes or no?

221 MR. HARMON:

Well, your Honor, I'm going to object. He's explaining.

222 THE COURT:

Let him finish answering the question.

223 MR. SCHECK:

All right. Please finish.

224 MR. YAMAUCHI:

You've got to understand--I mean, common sense will tell you this too--if you've got a bloodstain and you put it on the plastic, it's not going to be different on the plastic than it would be on the swatch itself. If you have--if you have a glove and you put it in a package and some of the, you know, maybe a hair or fiber or something falls off, then that's going to have evidentiary value. And so of course you're going to want to change or save that packaging because it's got stuff in it that's important. But the residual amount from a piece of plastic that's supporting a blood swatch is insignificant. What's important is what's on the swatch.

225 MR. SCHECK:

Let us assume, Mr. Yamauchi, that the swatches originally collected in the plastic bag are not the swatches that were put in the bindles. Are you with me?

226 MR. HARMON:

Objection.

227 MR. YAMAUCHI:

You can make all kinds of assumptions.

228 MR. HARMON:

There's no basis for that hypothetical, your Honor.

229 THE COURT:

Sustained.

230 MR. SCHECK:

Well, could you not scrape blood off the original plastic bags that contain these swatches and do a DNA test to find out what types would come from that blood on the plastic bag?

231 MR. YAMAUCHI:

Yes. That's possible.

232 MR. SCHECK:

All right. And then one could compare the blood on the original plastic packaging to the blood types one got from the swatches?

233 MR. YAMAUCHI:

That's possible. But why wouldn't you want to just go directly to the swatches themselves?

234 MR. SCHECK:

And if the typings from the plastic bag, blood from the plastic bag were different than the typings from the actual swatches, wouldn't that raise a concern with respect to tampering with evidence?

KEY QUOTE
235 MR. HARMON:

Objection. Calls for speculation, no foundation.

236 THE COURT:

Sustained.

237 MR. SCHECK:

Did it raise any concern in your mind that there was no count on either the bindles, the coin envelopes or any document you could find as to how many swatches were originally collected?

238 MR. HARMON:

Objection. It's compound, beyond the scope.

239 THE COURT:

Overruled.

240 MR. YAMAUCHI:

Once again, this has never been an issue before. And what's important on these swatches is the DNA or the genetic marker types that are going to be found through scientific testing. Number is not going to tell us the quantity and quality of DNA or the quantity and quality of any enzymatic typing or antigens that we would need to look at. So it's never been an issue.

241 MR. SCHECK:

All right. Evidence tampering as far as you're concerned has never been an issue in your laboratory?

242 MR. HARMON:

Objection. That's argumentative, your Honor.

243 THE COURT:

Sustained.

244 MR. SCHECK:

Has evidence tampering ever arisen as an issue in your laboratory?

245 MR. HARMON:

That's argumentative. That's bad faith, your Honor.

246 THE COURT:

Overruled.

247 MR. YAMAUCHI:

No.

248 MR. SCHECK:

Were you ever questioned by investigators from the District Attorney's office, a Mr. Thompson, a Mr. Stevens concerning the handling of the blood swatches in this case?

249 MR. HARMON:

Objection. It's irrelevant, calls for hearsay. There's no foundation for this, your Honor.

250 THE COURT:

Sustained.

251 MR. SCHECK:

Were you aware of any investigation conducted by the District Attorney's office or anyone else--

252 THE COURT:

Sustained. It's irrelevant.

253 MR. SCHECK:

Now, on direct examination--withdrawn. One more question. In your examination of the bindles, did you notice anything unusual?

254 MR. YAMAUCHI:

No.

255 MR. SCHECK:

You said that you received--that when you received the blood vial, Mr. Simpson's reference sample, it was in the gray envelope.

256 MR. YAMAUCHI:

Yes.

257 MR. SCHECK:

Got that from Mr. Fung?

258 MR. YAMAUCHI:

Yes.

259 MR. SCHECK:

The envelope was not sealed?

260 MR. YAMAUCHI:

No. It wasn't sealed yet.

261 MR. SCHECK:

You needed to look at your note to refresh your recollection on that?

262 MR. YAMAUCHI:

Certainly. I want to be sure. I knew it was written there.

263 MR. SCHECK:

Do you recall testifying in some detail on direct examination about the envelope not being sealed?

264 MR. YAMAUCHI:

On direct. I don't remember if that was asked or not.

265 MR. SCHECK:

Do you recall being asked whether it was normal in your experience at the SID to receive a reference sample envelope that was not sealed?

266 MR. YAMAUCHI:

I might have been asked--you want me to just answer the question?

267 MR. SCHECK:

I'm asking if you recall saying that on direct.

268 MR. YAMAUCHI:

Well, if I was asked that question, I would say it's not normal, but it's not out of the ordinary or extraordinary.

269 MR. SCHECK:

Well, my first question to you is, do you recall testifying--being asked that question, questions to that effect on direct examination and giving answers about whether it was normal to receive an unsealed envelope with a blood vial?

270 MR. YAMAUCHI:

Somewhere along those lines, it sounds familiar, but I can't be sure if that was asked in exactly that fashion or not.

271 MR. SCHECK:

Do you recall discussing with Mr. Harmon or Mr. Goldberg or any of the Prosecutors the issue of the blood vial, the envelope not being sealed?

272 MR. YAMAUCHI:

Yes.

273 MR. SCHECK:

How long were those discussions?

274 MR. YAMAUCHI:

Not very long at all. They--they asked me if it was or was not, and I told them no, it wasn't. They asked me if--

275 MR. SCHECK:

Excuse me. You said no, it wasn't?

276 MR. HARMON:

Your Honor, this is about the hundredth time today.

277 THE COURT:

Yes. Mr. Scheck?

278 MR. SCHECK:

I'm sorry. I'm sorry.

279 THE COURT:

It is at least the 10th time. There won't be an 11th, will there?

KEY QUOTE
280 MR. SCHECK:

Your Honor, my apologies, but I'm--

281 THE COURT:

Proceed.

282 MR. SCHECK:

I'm allowed to object when the answer is not responsive.

283 THE COURT:

You are, but you're not allowed to interrupt the witness when he's testifying.

284 MR. SCHECK:

You go ahead, Mr. Yamauchi.

285 MR. YAMAUCHI:

Okay. Where was I?

286 MR. SCHECK:

You were telling us about your conversations with the Prosecutors, and they asked you whether it was normal to see an unsealed envelope containing a blood vial, you gave them an answer that it wasn't, and then you were about to say something else.

287 MR. YAMAUCHI:

Occasionally, we work on evidence items that have not yet been booked. And so for that reason, it's not completely out of the ordinary.

288 MR. SCHECK:

Is it your understanding of procedures concerning the taking of blood from a suspect that after the nurse draws the blood from the suspect and hands the vial to the requesting officer, that the envelope is then supposed to be sealed?

289 MR. HARMON:

Objection. No foundation, calls for speculation.

290 THE COURT:

Sustained.

291 MR. SCHECK:

Do you--have you examined the envelopes that contain the blood vials?

292 MR. YAMAUCHI:

Well, obviously I looked at this one.

293 MR. SCHECK:

Okay. Your Honor, first I would like to put on the elmo People's 163-H, which is three envelopes, and I'll start with the gray one.

294 THE COURT:

Yes.

295 (Brief pause.)
296 MR. SCHECK:

Does that appear to be the analyzed evidence envelopes that you ordinarily receive after blood is drawn from a suspect?

297 MR. YAMAUCHI:

Yeah. It looks like it.

298 MR. SCHECK:

All right. Now I would ask that we focus in on the middle there.

299 (Brief pause.)
300 MR. SCHECK:

Now, with respect to the instructions, can you read here--you've read, "Officer requesting withdrawal of blood shall." You see that?

301 MR. YAMAUCHI:

Yes.

302 MR. SCHECK:

"1, enter the date and subject's full name on the label of the vial from this envelope and give the vial to the person withdrawing the blood."

303 MR. YAMAUCHI:

Yes, I can read that.

304 MR. SCHECK:

"2, instruct the person withdrawing the blood to; A, use no alcohol or other viable organic disinfectant on the subject's arm; B, completely fill vial in your presence; then C, initial the vial label; and D, complete the affidavit, the below affidavit." Am I reading correctly?

305 MR. YAMAUCHI:

Yes.

306 MR. SCHECK:

"3, when the vial is returned to you, enter your initials on the label and shake the vial vigorously."

307 MR. YAMAUCHI:

Yes.

308 MR. SCHECK:

"4, when the affidavit is completed, sign below--sign below it as a witnessing officer and seal the vial in this envelope using completed sealing evidence labels."

309 MR. YAMAUCHI:

Yes.

310 MR. SCHECK:

All right. Now, could we--could we circle the word "Seal" and print this out?

311 THE COURT:

Well, the jury will have it. Well, go ahead. Or do you want to put a check mark by no. 4 so you don't obscure all the small words?

312 MR. SCHECK:

Thank you.

313 THE COURT:

Unless you have a highlighting function.

314 MR. SCHECK:

I think if he moves over to the very, very bottom, he can just underline "Seal." No. Actually in the line--and also in the line above where it says "And seal the vial in this envelope." Okay. Thank you.

315 MR. SCHECK:

Now, "Sealed evidence labels" refers to what?

316 MR. YAMAUCHI:

I would take it that that refers to the seals that we use to seal our envelopes, although you're questioning me in an area that's not my responsibility, and--and I have no part in that.

317 MR. SCHECK:

Mr. Yamauchi--I understand.

318 MR. HARMON:

Well, I'd like--I move to strike his last answer and maybe we can move on then, your Honor.

319 THE COURT:

Overruled.

320 MR. SCHECK:

I'm just asking you for a definition based on your knowledge of LAPD procedures. "Sealed evidence labels," that refers to those red or yellow labels that we have seen on evidence items?

321 MR. YAMAUCHI:

That's what I would take it to refer to.

322 MR. SCHECK:

Okay. Now--

323 MR. SCHECK:

Your Honor, I would now like to display People's 183.

324 THE COURT:

All right. Let's clear the--

325 MR. SCHECK:

I think that's upside down.

326 THE COURT:

That's upside down.

327 MR. SCHECK:

Now, let's move in on the bottom half from "Officer requesting withdrawal" down.

328 MR. SCHECK:

Now, do you recognize this to be a picture of the envelope that contained Mr. Simpson's blood vial?

329 MR. YAMAUCHI:

It's kind of hard to read, but I recognize the name of the nurse that corresponds to the vial of blood and my notes.

330 MR. SCHECK:

And can you see now that this box we're focusing in on now refers to the affidavit of the person withdrawing blood?

331 MR. YAMAUCHI:

I can read that affidavit, "A person withdrawing blood."

332 MR. SCHECK:

And it indicates that Thano Peratis, the nurse, gave the blood vial to Detective Vannatter?

333 MR. HARMON:

Your Honor, I'm going to object. This is hearsay at this point.

334 THE COURT:

Sustained.

335 MR. HARMON:

Also beyond the scope.

336 THE COURT:

Sustained.

337 MR. SCHECK:

Isn't it your normal experience, Mr. Yamauchi, that after a police officer gets a vial of blood from the Parker Center from the nurse and delivers it to you in one of these envelopes, that it is sealed in accordance with the instructions on the envelope? Isn't that what you normally see?

338 MR. HARMON:

Objection. That's two questions, your Honor. It's compound.

339 THE COURT:

Sustained.

340 MR. SCHECK:

Isn't it--I have to ask it again.

341 MR. YAMAUCHI:

Would you mean not pointing at me like that?

342 MR. SCHECK:

I was pointing--I'm sorry, Mr. Yamauchi. I was actually pointing at the screen. I wasn't pointing at you.

343 MR. YAMAUCHI:

Okay. Thank you.

344 MR. SCHECK:

My apologies. I'm pointing at the document.

345 MR. YAMAUCHI:

All right.

346 MR. SCHECK:

Isn't it the normal practice--withdrawn. Isn't it your normal experience that evidence envelopes containing blood vials from suspects that have been drawn at the Parker Center and hand delivered to police officers and then brought to you are sealed in accordance with the instructions on the envelope?

347 MR. YAMAUCHI:

Well, like I was stating before, usually we're getting these items out of our evidence--our ECU, that's our evidence control unit. It is kind of rare that we receive them in this fashion, but evidence is received before it's booked. It happens sometimes.

348 MR. SCHECK:

Your Honor, the printout I'd like to have marked as Defendant's 188.

349 THE COURT:

1188 I believe.

350 MR. SCHECK:

1188. I'm sorry.

351 (Deft's 1188 for id = printout)
352 MR. SCHECK:

May I approach the witness?

353 MR. SCHECK:

Section 4 of your DNA protocol is the one concerning evidence handling?

354 MR. YAMAUCHI:

Yes.

355 MR. SCHECK:

And does it not indicate that the only evidence items that will be processed on a walk-in basis will be those items that are received from a detective/officer that has completed the proper transfer of items into the evidence control unit, ECU?

356 MR. YAMAUCHI:

That's what it reads there.

357 MR. SCHECK:

And if something goes through the--such as a blood vial were to go through the ECU, it would be sealed in addition at the ECU?

358 MR. YAMAUCHI:

Yes. If it goes through the normal procedure. Keep in mind also that it does state at the beginning of that protocol and procedure manual that these are guidelines and not meant to be taken step by step and that--as we know, this type of business requires different situations and different ways to respond to the situations. And this was a special situation. So I would say it's slightly out of the norm, but it's okay.

359 MR. SCHECK:

Well, is it okay for a detective to receive a blood vial at 2:30 in an envelope that's unsealed, take it up to his office, have coffee and drive it out to the scene--

360 MR. HARMON:

Objection, your Honor. It's argumentative.

361 THE COURT:

Sustained. Beyond the scope of this witness' testimony as well.

362 MR. SCHECK:

Now, you were asked on direct examination about removing blood from Mr. Simpson's blood vial on June 25th. Do you recall that?

363 MR. YAMAUCHI:

Yes.

364 MR. SCHECK:

Now, have you reviewed the records in the serology item description notes and the serology case summary sheets that refer to the withdrawal of blood from Mr. Simpson's blood vial for purposes of conventional serology testing?

365 MR. YAMAUCHI:

I think I'm referring to that right now. I believe we're referring to the same note page.

366 MR. SCHECK:

All right. Are your note pages marked by l numbers?

367 MR. YAMAUCHI:

No. Mine don't have l numbers on all of them.

368 MR. SCHECK:

Is this it?

369 MR. YAMAUCHI:

Yeah, it looks like it.

370 MR. SCHECK:

And this one that's--okay. All right.

371 MR. SCHECK:

Your Honor, may I have these two pages marked as Defendant's--

372 THE COURT:

1189.

373 MR. SCHECK:

All right. Maybe we ought to--1189-A will be the serology item description notes and 1189-B will be the serology case summary sheet.

374 (Deft's 1189-A for id = notes)
375 (Deft's 1189-B for id = summary sheet)
376 MR. SCHECK:

Are you with me, Mr. Yamauchi?

377 MR. YAMAUCHI:

Yes.

378 MR. SCHECK:

Okay. Now, the serology case summary sheets indicates--reflects conventional serology testing performed by you and Greg Matheson between June 24th and June 28th or let me put it--let me withdraw that. You were requested to do it on June 24th. You started the conventional serology analysis on June 25th and it was completed on June 28th. Please refer to the sheet if that would refresh your recollection.

379 MR. YAMAUCHI:

Yes.

380 MR. SCHECK:

And this represents one conventional serology run done together by you and Mr. Matheson?

381 MR. YAMAUCHI:

Yes.

382 MR. SCHECK:

And to perform these conventional serology tests, what do you do with respect to the blood from the suspect; in this case, Mr. Simpson?

383 MR. YAMAUCHI:

Could you be more specific?

384 MR. SCHECK:

Sure. Is the actual way that you perform this test, to wet some threads in drops of blood and then use that for purposes of the electrophoresis that goes on in conventional serology?

385 MR. YAMAUCHI:

Well, generally speaking, that's--that sounds about right.

386 MR. SCHECK:

Is that how it was done in this instance? And I'm referring here to 1189-B.

387 MR. YAMAUCHI:

Well, when I did the reference bloods, I--I did pretty much in that fashion what you just described.

388 MR. SCHECK:

All right. And to your knowledge, did Mr. Matheson do a duplicate test on this or did you both just do one test?

389 MR. HARMON:

Objection. Calls for speculation.

390 THE COURT:

Overruled.

391 MR. YAMAUCHI:

Well, he--he did all the ABO and duplicated anything I might have done. I did the screening of the bloods. When the evidence came in line, he did the samples and I loaded them on the gel and ran the gel.

392 MR. SCHECK:

So how many threads were created as reflected in 1189-B for the conventional serology tests between both yourself and Mr. Matheson from Mr. Simpson's blood vial?

393 MR. YAMAUCHI:

I'm not sure because I wouldn't have created them all--you mean just the ones that I would have made?

394 MR. SCHECK:

Well, looking at the test results, how many threads would have to be created to generate the results that are reflected on 1189-B?

395 MR. YAMAUCHI:

At least two I'd say.

396 MR. SCHECK:

All right. And so you did one and Mr. Matheson did one?

397 MR. YAMAUCHI:

No. I--I would have done two. There's--wait. One, two--I would have used--excuse me--at least three for doing that analysis.

398 MR. SCHECK:

And how many threads would Mr. Matheson need to do his analysis if any additional were needed?

399 MR. YAMAUCHI:

Let's see. At least one more.

400 MR. SCHECK:

All right. Now, you don't need three-quarters of a milliliter of blood to make four threads, do you?

401 MR. YAMAUCHI:

No. But when you're doing the forward and reverse typing for the ABO, you need a decent quantity because you want to get separation between the blood cells and the plasma. So for that purpose, you need a little bit better volume.

402 MR. SCHECK:

You need as much as three-quarters of a mil?

403 MR. YAMAUCHI:

That might be on the high side, but it's approximately.

404 MR. SCHECK:

Now, do you recall that--you know a criminalist named Mark Taylor; do you not?

405 MR. YAMAUCHI:

Yes.

406 MR. SCHECK:

And you recall that he visited your laboratory at piper tech on January 18th, 1995 with myself, Mr. Blasier, and an individual named Dr. John Gerdes?

407 MR. YAMAUCHI:

Yes.

408 MR. SCHECK:

And you recall that we took pictures that day of Mr. Simpson's blood vial?

409 MR. YAMAUCHI:

Yes. I recall that.

410 MR. SCHECK:

And you recall that Mr. Matheson was present at that meeting when we took pictures of the blood vial?

411 MR. HARMON:

Objection. Beyond the scope.

412 THE COURT:

Overruled.

413 MR. YAMAUCHI:

Yes.

414 MR. SCHECK:

And at that meeting, did--was there not a review with you and Mr. Matheson with respect to each entry on the blood vial that reflected someone from LAPD entering into the blood vial and removing blood?

415 MR. HARMON:

Objection. Calls for hearsay, speculation, beyond the scope.

416 THE COURT:

Overruled.

417 MR. YAMAUCHI:

They were discussing some things and pointing here and there at--I don't know for sure exactly what they were talking about.

418 MR. SCHECK:

You weren't part of that conversation?

419 MR. HARMON:

Objection. It's vague as to those conversations.

420 THE COURT:

Sustained.

421 MR. SCHECK:

You said there was conversation you didn't understand?

422 MR. YAMAUCHI:

Yes. They were talking next to where mark had the camera set up, next to those hot lights.

423 MR. SCHECK:

There's an entry on the blood vial on--for June 25th that Mr. Harmon asked you about on direct examination, right?

424 MR. YAMAUCHI:

As to June 25th, 1994?

425 MR. SCHECK:

Yeah.

426 MR. YAMAUCHI:

Yes.

427 MR. SCHECK:

Your initials are on the vial as somebody that entered it and removed it?

428 MR. YAMAUCHI:

Okay.

429 MR. SCHECK:

Is that true?

430 MR. YAMAUCHI:

Well, I would have to see that. I--that's something I would do, but I mean, it sounds like you're making a statement of fact.

431 MR. SCHECK:

Well, I'm asking. Are there not--is there not a--on the blood vial itself, an indication that on June 25th you, as reflected by your initials, entered the vial to remove blood?

432 MR. YAMAUCHI:

That sounds like something I'd do. I'd have to see the vial to make sure.

433 MR. SCHECK:

Well, Mr.--don't you recall Mr. Harmon asking you questions about that entry on direct examination?

434 MR. YAMAUCHI:

Whether I initialed it or not?

435 MR. SCHECK:

Whether you removed blood from the vial on June 25th.

436 MR. YAMAUCHI:

Of course I remember him asking me that, but you were talking again about my initials and stuff like that on there and the date.

437 MR. SCHECK:

When--do you recall Mr. Taylor, others in the room questioning you about how much you took out of the vial on June 25th when we visited the laboratory on January 18th?

438 MR. HARMON:

Objection. It's hearsay.

439 THE COURT:

Overruled.

440 MR. YAMAUCHI:

I don't remember them specifically asking me, but if they did, I would have referred to my notes.

441 MR. SCHECK:

Do you have notes?

442 MR. YAMAUCHI:

Yes.

443 MR. SCHECK:

Of the meeting?

444 MR. YAMAUCHI:

Of the meeting, no. Of my notes for the serology item description notes.

445 MR. SCHECK:

Did you tell Mr. Taylor and the others in the room that you just took blood for threads, a drop or two, and you put back into the tube the blood that you didn't use?

446 MR. YAMAUCHI:

Now I know I wouldn't say that because I would never put blood back in the tube.

KEY QUOTE
447 MR. SCHECK:

You didn't say that?

448 MR. YAMAUCHI:

Nope.

449 MR. SCHECK:

Did you say that you only used a drop or two that would be, at the most, .05 milliliters?

450 MR. YAMAUCHI:

.05 milliliters. No.

451 MR. SCHECK:

You did not say that about the amount of blood that you withdraw from the tube on June 25th, that you just took a drop or two constituting at most, .05 milliliters?

452 MR. YAMAUCHI:

If they were asking me how much I took to make the threads, I might have said that. But overall, I took more out because I had to do the ABO typing also.

453 MR. SCHECK:

My question is, did you tell Mr. Taylor and others in the room that you took just .05 milliliters to make threads when you went into the vial on June 25th?

454 MR. YAMAUCHI:

If the question was, did I make threads, how much did I take out to make the threads, yes.

KEY QUOTE
455 MR. SCHECK:

Do you have as you sit here today an independent recollection of how much blood you took out of the vial on June 25th?

456 MR. YAMAUCHI:

Looking back on my notes, I have approximately three-quarters of an ml.

457 MR. SCHECK:

All right. And there is nothing--you're looking now at the serology case summary sheet?

458 MR. YAMAUCHI:

Serology item description notes.

459 MR. SCHECK:

Right. That's 1189-A, the one we were just talking--the one I just showed you?

460 MR. YAMAUCHI:

Was one or the other.

461 MR. SCHECK:

And that note reflects one three-quarters of a milliliter being withdrawn, correct?

462 MR. YAMAUCHI:

Yes.

463 MR. SCHECK:

But there is no notation in any notes of Mr. Matheson taking three-quarters of a milliliter on June 27th?

464 MR. HARMON:

Objection. That calls for speculation, hearsay.

465 THE COURT:

Sustained. Sustained. All right. Mr. Scheck, we need to take a comfort break for the jurors. We'll take a five-minute comfort break. All right. Any jurors that want to step into the jury room, feel free to do so. Don't go away.

Temperature

tense

Key Quotes (5)

Barry Scheck
And if the typings from the plastic bag, blood from the plastic bag were different than the typings from the actual swatches, wouldn't that raise a concern with respect to tampering with evidence?
Scheck's tamper hypothesis in plain terms — that the plastic bags could serve as an independent check on whether the swatches were swapped. Objection sustained, but the jury heard it.
Collin Yamauchi
Now I know I wouldn't say that because I would never put blood back in the tube.
Yamauchi flatly denies telling defense investigators he returned unused blood to the vial — a key denial in the blood volume dispute.
Collin Yamauchi
If the question was, did I make threads, how much did I take out to make the threads, yes.
Yamauchi partially concedes he may have told investigators he took only a drop or two for threads — but claims he took more overall for ABO typing, a distinction that muddies the blood volume accounting.
Lance A. Ito
It is at least the 10th time. There won't be an 11th, will there?
Judge Ito publicly reprimands Scheck for repeatedly interrupting witnesses, a recurring friction point with his cross-examination style.
Collin Yamauchi
What's important, Mr. Scheck, is the stain itself and the information that can be gained by that.
Yamauchi pushes back on the chain-of-custody argument about missing plastic bags, defending standard SID practice — but his reasoning implicitly assumes the swatches themselves were not tampered with.

Evidence (9)

People's 226
Card transaction report (serology) showing entries into the evidence processing room (door 18) on June 14th
discussed, used to track Yamauchi's movements during glove and swatch processing
Defendant's 1187
Defense-prepared summary of June 14th evidence processing room transaction entries bearing Yamauchi's name
introduced, displayed to jury, authenticated by Yamauchi under assumption
Defendant's 1188
Printout of Section 4 of the SID DNA protocol concerning evidence handling and walk-in procedures
introduced, used to establish that walk-in evidence must be properly transferred through ECU
People's 163-H
Three blood-draw envelopes (including the gray envelope that held Simpson's blood vial), showing LAPD officer instructions including requirement to seal the vial
displayed on ELMO, read aloud to highlight that officers are required to seal the vial
People's 183
Photograph of the envelope that contained Simpson's blood vial, showing the affidavit section
displayed, partially read, objection sustained on hearsay re: Peratis/Vannatter
Defendant's 1189-A
Serology item description notes reflecting Yamauchi's withdrawal of three-quarters of a milliliter from Simpson's blood vial on June 25th
introduced, used to establish how much blood was removed
+ 3 more

Notable Exchanges (5)

Barry ScheckCollin Yamauchi
Scheck walked Yamauchi through the transaction log showing multiple entries and exits from the evidence processing room between 8:17 and 11:00 AM on June 14th — during the time Yamauchi was supposedly carefully processing the glove and swatches without rushing or changing gloves. The implication: why was he repeatedly leaving a controlled environment?
strategic
Barry ScheckCollin Yamauchi
Scheck confronted Yamauchi with what defense investigators (Taylor, Gerdes, Blasier) were allegedly told during a January 18, 1995 lab visit — that Yamauchi only removed a drop or two (.05 ml) of blood from the vial on June 25th. Yamauchi denied saying he returned blood to the tube, partially conceded the drop-or-two statement applied only to thread-making, but maintained his notes show three-quarters of a milliliter total removed.
revealing
Barry ScheckCollin YamauchiLance A. Ito
Scheck read aloud the official LAPD blood-draw envelope instructions requiring officers to seal the vial before delivery. Yamauchi acknowledged the language but deflected by noting SID sometimes receives unbooked items and that the situation was 'slightly out of the norm, but it's okay.' Harmon's motion to strike Yamauchi's editorial was overruled.
strategic
Lance A. ItoBarry Scheck
Judge Ito rebuked Scheck for interrupting Yamauchi mid-answer, telling him 'It is at least the 10th time. There won't be an 11th, will there?' Scheck defended himself by saying he is allowed to object to non-responsive answers; Ito replied he may not interrupt while the witness is testifying.
heated
Barry ScheckCollin Yamauchi
Scheck established that no photographs were taken of the Bundy swatches, no count of swatches appeared on the bindles or coin envelopes, no initials of Andrea Mazzola appeared on any bindle, and the original plastic bags were not preserved — cumulatively attacking the chain of custody before any DNA testing occurred.
methodical

Light Moments (3)

Collin Yamauchi
Yamauchi asked Scheck to stop pointing at him; Scheck clarified he was pointing at the screen, not the witness, and apologized.
Collin Yamauchi
After Scheck asked Yamauchi to check whether a pre-cut photograph of the glove exists, Yamauchi asked 'Right now?' Scheck replied 'Well, why not? Sometime after court today.'
Rockne Harmon
Harmon complained to Ito that Scheck had interrupted the witness 'about the hundredth time today.' Ito diplomatically corrected: 'at least the 10th time.'

Credibility Attacks (3)

⚔ Collin Yamauchi
prior inconsistent statement
Scheck confronted Yamauchi with statements allegedly made to defense investigators Mark Taylor and Dr. John Gerdes on January 18, 1995 — that he removed only a drop or two (.05 ml) of blood from the vial for threads. Yamauchi's notes say three-quarters of a milliliter. Yamauchi partially reconciled this by claiming the drop-or-two statement referred only to thread-making, not total volume removed.
⚔ Collin Yamauchi
omission / incomplete demonstration
Scheck pointed out that during direct examination Yamauchi demonstrated the swatch-cutting process for the jury but left out the step of making hand-drawn sketches of the swatches — done with the same gloved hand used for cutting, without changing gloves between samples.
⚔ LAPD evidence handling (systemic)
deviation from written protocol
Scheck used the LAPD blood-draw envelope instructions and the SID DNA protocol to establish that: (1) officers are required to seal the vial before delivery; (2) walk-in evidence should go through the ECU; (3) original packaging should be preserved. Yamauchi acknowledged all three written requirements while defending deviations as acceptable given the circumstances.

Witness Demeanor

Yamauchi is methodical and careful with his language, frequently saying 'that's a good assumption' or 'that sounds reasonable' rather than committing directly.
He pushes back on Scheck's framing multiple times, offering extended explanations of his reasoning rather than yes/no answers, which draws repeated prosecution objections and at least one judicial admonition to Scheck for interrupting.
He appears slightly irritated when Scheck points toward him and asks him to stop.
He speaks with confidence about laboratory procedure but hedges on specific recollections, repeatedly saying he would need to check his notes.

Objections

29 objections (15 sustained, 14 overruled)
Proceeding 6210 • 465 utterances • Prosecution witness
Criminal Trial
Department 103
⚖️ Start
📂 MAY 30, 1995 📄 Cross-examination of Collin Ya
MAY 30, 1995 KRT DvH TD