Despite, therefore, the small trace showings that we have on this chart for the evidence sample, are you of the opinion, Doctor, that there is no way that those evidence samples could have come from a purple-top test tube?
Now, Dr. Lee, as I understand it, you were hired to refute the presence of EDTA in the blood samples that came from the socks and the back gate that was tested by Agent Martz, correct?
Well, you relied upon the data that he had generated; you relied upon the testimony that he gave at the criminal trial; true?
And you were told that you could not contact Rodger Martz because the FBI didn't want to get involved in the civil case?
Did you ever again ask to contact Rodger Martz to see what his opinions were relative to whether or not a ghost effect or cross-over could be the reason for the levels of EDTA in the samples in the -- from the back gate and the socks?
You were aware when you did your -- arrived at your opinions, that Rodger Martz was not requested to find quantities in EDTA, correct?
He was requested to determine whether or not there was evidence that the blood from the evidence samples came from a purple-top tube.
Next in order. Have you ever seen the letter of Mr. Harmon from the D.
A.'s office to the -- to Rodger Martz?
It would be important for you to know exactly what Rodger Martz was attempting to do in arriving at your opinions and conclusions, since you didn't do any test to determine EDTA in any sample, correct?
And you don't have -- never designed a test to determine the presence or absence of EDTA; correct?
And you knew from your reading of material, that Rodger Martz had never designed a test to determine the presence or absence of EDTA in any material; correct?
You're aware that when he designed this test, he did not design it to determine quantities; true?
Objection. Object to the use of this exhibit, not being relied upon by the witness in giving his opinion.
(BY MR. BAKER) Well, let me ask you this: You certainly became aware, from reading the testimony of Rodger Martz in the criminal trial, that he was to refute the possibility that the stain on the socks would -- could have come from Nicole's reference sample, sample number 59; correct?
And he was also to refute the possibility that item number 117 could have come from Mr. Simpson's reference sample; right?
And he was asked to make those determinations and not to quantify at all. And, in fact, he didn't quantify; true?
Well, that depends upon what you mean by "quantify." Any occasion, in order to draw a conclusion, you have to have some idea about the quantity involved; otherwise, you can't draw a conclusion based upon whether or not it's even there.
Let me read to you what you read of Mr. Martz's testimony in the criminal trial at 38641, lines 1 through 5.
By the way, is the method that you used, any of the methods that you used, quantitative methods?
Okay. Now, you in coming and arriving at your opinions, are not saying that wasn't EDTA; you're saying that the amount -- the quantity is too little; and hence, you don't believe it came from a purple-top test tube, correct?
So you are using quantities, where Mr. Martz, in his tests, determined -- or attempted not to quantify anything; correct?
You are attempting to use quantity to -- in arriving at your opinion that -- that this EDTA that was found in the samples from both the back gate and the socks, was not EDTA from a purple-top test tube; correct?
All right. And you are fully aware that Rodger Martz does not use quantity to make any determination relative to EDTA, nor was he asked to; correct?
I can answer. I can tell you, as an expert, that I could draw no conclusions whatsoever unless he had some measure of the amount of material present.
KEY QUOTEHe has to know the limits of the sensitivity, the limits of his detection, limits -- all these things he has to know, or his analysis means absolutely nothing.
And you're aware that he testified that the levels of EDTA or -- strike that -- what he found on the 206 and 207 was consistent with EDTA on the back gate and the socks, correct?
2405.
MR. P. BAKER: Dr. Lee's notes. (The instrument herein referred to as Dr. Terry Lee's notes was marked for identification as Defendant's Exhibit No. 2405.)
(BY MR. BAKER) "If detectable levels of EDTA are found in the stains, but significantly lower than the levels from blood in the tube, then interpretation becomes problematic." What you meant by that, sir, it becomes a problem to determine the EDT
(BY MR. BAKER) Let's go down to the next one. You say, if not planted -- can you read that for us -- convincing argument must be found why EDTA is present at that level.
"If not planted, convincing argument must be found for why the EDTA is present at these levels.
KEY QUOTEOh, I think I can do it now. One would be direct contamination from either the environment or contamination from the lab during the sample analysis.
So you were attempting to find convincing argument to explain away the EDTA found by Rodger Martz, and you understood that to be your -- your -- your goal; correct, sir?
No, that wasn't my goal. My goal was to understand why the trace levels that were observed in that particular analysis were there.
Well, now, so you came up with this ghosting or carry-over effect from the equipment, correct? That's your theory of why these levels of EDTA were found by Rodger Martz?
And from a the available data, you can't determine what the matrix used to dissolve the sample. You can't determine the quantity and you can't determine the volume equilibrium was done before the next analysis, can you?
There was statements in the materials that I reviewed with -- with regard to the matrix, with -- with -- with regard to rough estimations about the quantity. I have no information at all with regard to the exact procedures with respect to the chromatography and the sample injection procedures.
(BY MR. BAKER) -- it's sheer speculation on your part as to whether or not there was any ghosting or cross-over effect; true?
THE COURT: All right. You -- All right. Let's a take a ten-minute recess. (Recess.) (Jurors resume their respective seats.) CROSS-EXAMINATION BY MR. BAKER:
You discussed in your deposition the way to design an experiment in such a way there would be no carryover effect?
I was told that I could not contact him.
That's correct.
If not planted, convincing argument must be found for why the EDTA is present at these levels.
So do I.
I can tell you, as an expert, that I could draw no conclusions whatsoever unless he had some measure of the amount of material present.