Retrograde Extrapolation for the DUI Lawyer

by baronedefensefirm on September 29, 2011

Here is an email question recently received from a new lawyer:

I hope all is going well.  I had a question regarding retrograde extrapolation.  I was told that the statute says we cannot use retrograde extrapolation.  So if a person blows a pbt of .06 at 12:30, and refuses the data master at the station (forgetting about all the implied consent stuff), and cops get a warrant and take person to clinic, and at 1:45 the blood reveals a .10, I was told that retrograde extrapolation is no longer valid because of statutory law, and that the person is presumed to be .10 at the time of the incident.  Is this correct?  I have been trying to look this up.

Here is our answer:

What crazy person told you that??  It’s preposterous really.  The instruction was changed so it says there’s an inference BAC at time of test is same as at time of driving, but what this person is suggesting is that this change creates a presumption, which is not permissible.  (Almost) the only presumption in a criminal case is the presumption of innocence.

Lawyers handling a lot of DUI cases might consider purchasing the BAC-Tracker software.  This software assists in alcohol calculations, including retrograde extrapolation.  The software is provided by BAC-Tracker International, Inc.  Their web site indicates:

We are a forensic consulting company providing forensic alcohol litigation services internationally to the criminal justice community. Headquartered in Atlanta, Georgia, BAC-Tracker International, Inc. provides training, expert witness consultation, and software solutions for the extrapolation of blood alcohol concentration (BAC) and the management of scientific uncertainty for alcohol related cases.

BAC-Tracker International, Inc. has just completed their update to BAC Tracker software v3.1. A.  This update offers a number of additional improvements. The most significant improvements include (1) the addition of a new report type – The Retrograde Alcohol Extrapolation Report. This report will extrapolate the alcohol level to a time of interest from a known BAC; (2) greater freedom of generating reports using various combinations of volume distribution formulae while accounting for uncertainties associated with absorption and/or elimination; (3) and the ability to include the uncertainty associated with the known BAC based on QA/QC data of the analytical method thus allowing BAC Tracker to account for every major source of uncertainty in the extrapolated result.

BAC Tracker v3.1 offers users the ability to generate up to 506 different reports using various combinations of volume distribution formulae while accounting for absorption rates and/or elimination rate uncertainties.

The software can be purchased from the manufacturer’s web site.

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Mike Nichols Inspiring Teamwork

by baronedefensefirm on May 11, 2011

Team Work

Make no mistake about it, what Mike Nichols accomplished in obtaining his order of suppression in the Jabrocki case is nothing short of astonishing.  It might also be a source of inspiration for all of us, but before I tell all of you about the backdrop of this victory; let me first tell you about the Red Wings.  Please indulge me in this as I often use sports analogies to metaphorically explain to others what happens in the court room.

Last night the Red Wings pulled-off another unbelievable victory against an impressive opponent.  The Wings are trying to do what only three teams have ever done in NFL history – come back from a 3 – 0 deficit to win a playoff series.  Last night they tied the series at 3 games each.  It was perhaps the best hockey game I’ve ever seen.  The intensity was incredible, and even when it looked like the Wings would lose again, they pulled it off, got another victory; and put themselves in a position to win the cup.  They did it through great leadership, coaching, and great teamwork and by simply having the gritty determination to never give up.  Even when faced with great odds.

Mike Nichols did the same thing in winning his suppression motion based on the Michigan Lab’s failure to report uncertainty.   Like the Red Wings facing a 3-0 deficit, Mike was facing a .30 blood test result.  How many of us would have the gritty determination to take on a number that high?  The prosecutor did everything he could to block Mike’s efforts, just as the Shark’s goal tender did everything possible last night to keep the Wings from scoring. But like the Wings, Mike never gave up.

One inspiring and important thing Mike did, and something we can all learn from, is reached-out to his colleagues in his own State and others.  As lawyers we are by nature extremely competitive and as it turns out, Mike and I do “compete” for clients.  But that didn’t stop Mike from reaching out to me to assist him with this case.  He even asked me to co-counsel the case (due to scheduling and distance this was not tenable for me).  Think about that for a minute.  Here is Mike Nichols’ opportunity to obtain a huge victory and most of us, in the face of that, would want to keep all the accolades, all the glory for ourselves.  Certainly, we wouldn’t want to share the spotlight with another DUI lawyer.  But Mike made this offer because he knew the potential significance of the ruling for all of us, and he wanted to do everything possible to assure a positive outcome, both for his client and for the defense community.  Mike and I have discussed this concept on several occasions and we agree that we are all Constitutional warriors in same army.  We fight on the same team, and when we fight together, we’re tough to beat.  Too often I think we forget this.

In looking at the case and his own knowledge and skill level, Mike was aware that his understanding of science was not what he wanted or needed it to be, so he aligned himself with a toxicology expert who was, in his own words “whispering in his ear” as the case progressed.  He talked and emailed Ted Vosk regularly to discuss the case and the science of measurement and uncertainly.  He immersed himself in the science, and as the case progressed over several weeks Mike shared transcripts and articles with me, and he and I discussed the science; and we strategized and hypothesized on various aspects of his hearing, including his cross-examination of Dr. Adatsi.

Mike also had a co-counsel to assist him in court.  Someone not well known as a DUI expert, but someone who could help Mike with the science in court room; again demonstrating that he was willing to share the spot-light in a way that would increase his odds of winning.

Mike won because he never gave up, and because he knew what he didn’t know, worked hard to learn the science, then assembled a team to assist him.  While this may not be at the level of team-work displayed by the source-code battle fought by Evan Levow, the HGN battle fought by Don Ramsell and many other similar examples; it is nevertheless something from which we can all gain inspiration.

Working together we can win these battles, even against what seem like (and often are) unbelievable odds. And sometimes, as Mike and the Wings have shown us, coming from behind and “forcing a game seven,” even against a talented opponent, is possible.  But sometimes it requires nothing less than great leadership, coaching, teamwork and simply having the gritty determination to never give up.

For more information read: 10,000 plus DUI Cases Now in Jeopardy Due to Laboratory Deficiency

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DataMaster DMT Seminar

May 5, 2011

On June 3rd, 2011 in Lansing at the Cooley Law School, Chuck Rathburn and Mary McMurray, two of the nation’s top instructors in breath testing and the DMT will present the basics of breath testing and the specifics of Michigan’s new instrument, the DMT. You may have read the coverage in the Detroit News regarding [...]

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Find Michigan DUI Lawyer | West Bloomfield Drunk Driving Cases Possibly Compromised

March 29, 2011

A West Bloomfield Police Officer by the name of Jeffrey Pindzia is being charged with a common law offense and conspiracy to commit a common law offense – this according to a recent Oakland Press article.  Apparently, the West Bloomfield officer was involved in a ticket-fixing scheme.   These allegations against the officer are just [...]

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Find Michigan DUI Lawyer | Breathalyzers Compromised in 1,147 Drunken Driving Cases

March 28, 2011
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If you’ve been arrested in Michigan for drunk driving then there is an excellent chance that you were asked to take a breath test.  If that breath test result was above .08, then the state can use this as the only evidence needed to prove that you had an unlawful bodily alcohol level at the [...]

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Find Michigan DUI Lawyer | Marijuana Driving in Michigan

March 24, 2011

In Michigan it is a crime to drive with any amount of marijuana (or THC) in your system.  This is what is called a “zero-tolerance” crime because the state is relieved of its obligation to prove that the marijuana caused your driving to become impaired.  This is unfortunate, but it does not necessarily mean that [...]

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Find Michigan DUI Lawyer | GERD Can Falsely Raise Breath Test Results

March 23, 2011

It is possible for a person arrested for drunk driving who is suffering from GERD to have a breath test result that is way too high.  So what does ”way too high” really mean?  It’s impossible to say, but with GERD the breath test result could be as much as 100% too high.  It is more likely however that the breath test result is [...]

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Find Michigan DUI Lawyer | The Breath Test Defense of Breathing Pattern

March 23, 2011

There are many reasons why the breath test results in any particular case might be unreliable.  One of these reasons is the breathing pattern itself.  This type of defense might apply where the breath test evidence ticket (OD-80) indicates “refused” or “invalid sample” or displays results that vary from one another. Let’s take for example, [...]

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Find Michigan DUI Lawyer | Using State of the Heart Technology to Win DUI Trials

March 22, 2011

There is no doubt about it: DUI trial lawyers are in the story-telling business.  And in order to win the trial, the DUI defense lawyer must be able to tell a compelling story.  This was the point made by Michigan criminal defense lawyer Cheryl Carpenter in her recent post to a criminal defense listserve (reused [...]

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Find Michigan DUI Lawyer | Radio Frequency Can Cause Falsely High Breath Test Results

March 21, 2011

In reviewing videotapes of our client’s DUI arrests we often see cell phones being used in the booking room at the same time that the breath test is being administered.  The problem is that cell phones create radio waves, and these waves can interfere with the breath test.  Here is a videotape regarding this problem.  [...]

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Find Michigan DUI Lawyer | Fraudulent Breath Tests Lead to As Many as 4000 Wrongful Drunk Driving Convictions

March 12, 2011

The lynchpin of Michigan drunk driving prosecution is a reliable breath testing program.  Prosecutors have big problems when this reliability is legitimately called into question. This is exactly what has happened recently in Texas where it is reported that between 1200 and 4000 breath tests were fraudulently verified. According to the Huston Chronicle a Department [...]

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Find Michigan DUI Lawyer | Breath Test Contamination Defense

March 10, 2011
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I teach a course entitled “Drunk Driving: Law and Practice” at the Auburn Campus of the Thomas M. Cooley Law School.  One two hour class session is devoted to the science and administration of infrared breath testing.  A special emphasis is given to the DataMaster because that is the instrument used for law enforcement purposes [...]

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Find Michigan DUI Lawyer | Problems with Breath Testing Equipment in Michigan

March 2, 2011

If you are arrested for drunk driving in Michigan then you will most likely be asked to submit to a breath test.  The purpose of this test is to determine the amount of alcohol in your body.  The name of the device used in Michigan is the DataMaster.  The majority of the DataMasters in use [...]

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Find Michigan DUI Lawyer | Violation of Breath Testing Adminstrative Rules Might Lead to Suppression of Results

March 1, 2011

The Michigan administrative rules for breath testing require that the breath test operator in a drunk driving case observe the suspect continuously for 15 minutes prior to administering the breath test. The reason the 15 minute rule exists is because it takes about 15 minutes for mouth alcohol to evaporate.  If mouth alcohol exists then [...]

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Find Michigan DUI Lawyer | Is My Michigan DUI Case Worth Fighting?

March 1, 2011

You are the only one who can answer this question, but here are some guidelines to help you decide.  What do you have to lose if you are convicted?  At the Barone Defense Firm our client’s typically have two major concerns, their job and the possibility of jail time.  A comprehensive defense can help with [...]

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