San Francisco DUI Defense
These are the expert witnesses that I routinely use to defend my client's
DUI cases. Expert witnesses are not members of my staff, but instead independent
witnesses that are retained by the client for extraordinary work in their
DUI cases. Expert witnesses are NOT necessary in every DUI case, in fact,
more often than not, an expert will not be used. But when you need to
win, these are the people I've been working with for years that will
help us achieve the result that you need, whether it by in Jury Trial,
a Motion to Suppress Evidence or a DMV hearing.
Since I work with these experts on such a regular basis, I have negotiated
fair flat rate and hourly rates with all experts. I keep my attorney fees
reasonable for this very reason. Don't spend all your budget hiring
a high priced and often money driven "DUI DEFENSE TEAM" or "DUI
DEFENSE FIRM." Instead, hire a lawyer you can know, someone you can
work with and a lawyer with a track record of success. Combine that individualized
and experienced representation with experts like Mr. McCann, Ms. Weingarten
or Mr. Mark, and you will truly have an honest chance of maximizing your
DUI case WITHOUT BREAKING THE BANK.
Each one of the below individuals has assisted me in winning jury trials,
DMV hearings and obtaining remarkable settlement results. Please call
me directly to discuss retaining one of these highly recognized leaders
in the DUI defense field in Northern California.
Alan McCann | DUI Investigations
Mr. McCann provides service evaluating and analyzing police reports, reconstructing
traffic collisions and interviewing involved parties. Mr. McCann served
as a Police Officer with the San Francisco Police Department for 33 years
and was assigned primarily to the Traffic Enforcement and Investigations
Division, Solo Motorcycle Detail. Mr. McCann has investigated and generated
reports in over 10,000 traffic collisions. He has investigated over 1000
DUI cases and made arrests and reports on approximately 700 of those incidents
during his career as a Police Officer.
Mr. McCann has an Advanced POST Certificate issued by the State of California
and was awarded the Gold Medal of Valor from the San Francisco Police
Department. Mr. McCann is recognized as an Expert Witness in the fields
of DUI, accident reconstruction and use of force in California Superior
Courts and has testified as an Expert Witness at DMV hearings.
Ms. Halle Weingarten | Forensic Toxicologist
Halle Weingarten is the former Chief Forensic Toxicologist for the Santa Clara County Laboratory of Criminalistics in San Jose. As
a Consultant in Forensic Toxicology, Ms. Weingarten provides comprehensive
case review including the evaluation of the role of alcohol and drugs
in case specific context, effects and metabolism of these substances,
assessment and reliability of alcohol and drug test procedures, regulatory
compliance, evidence handling procedures, and quality assurance.
Ms. Weingarten provides expert testimony in criminal, administrative, and
civil proceedings in addition to assisting laboratories in setting up
analytical methods that meet regulatory and legal requirements and in
training laboratory staff and law enforcement officers. Ms. Weingarten
has testified in every major court and DMV in the Bay Area and is considered
one of the top forensic toxicologists in Northern California.
Kenneth Mark A. | Forensic Toxicologist/Owner Bay Area Forensic Lab
"Mr. Mark is a forensic toxicologist who handles nearly all DUI cases
involving blood samples and blood reanalysis. Mr. Mark has testified in
over 1700 cases in municipal, superior, and federal courts on the analytical
procedures used to determine alcohol and/or drug levels in biological
samples and their effects of on the human body.
- Testimony frequently included the interpretation of blood alcohol levels,
driving observations, field sobriety test performance, and other aspects
of alcohol ingestion. Testimony also included interpreting urine and blood
drug levels, signs and symptoms of drug intoxication as well as their
effect on driving ability. Testified approximately equally for prosecution
- Testified in over 1000 civil proceedings primarily DMV administrative per
se hearings. Former Supervising Toxicologist for the San Mateo County
Sheriff's Forensic Laboratory with over thirty years of experience
in clinical and forensic toxicology. Owner and operator of BAY AREA FORENSIC
LAB, California state licensed in 1989 as a Forensic Alcohol Laboratory.
- Authored blood, breath, and urine alcohol and drug testing procedures for
San Mateo County and Bay Area Forensic Lab. Trained over 1500 police officers
in the operation of the Model 4011 series and Model 5000 Intoxilyzers.
Performed maintenance and repairs on the Model 4011 series and Model 5000
Intoxilyzers. Analyzed over 40,000 blood and urine samples for alcohol
and/or drug content.
- Provided consultation to the Office of the District Attorney in over 2000
cases, primarily driving under the influence cases, and a substantially
larger number of cases with defense counsel. Qualified as an expert on
Intoxilyzers, Alcosensors (PAS device), and Draeger Instruments.
Training and Education
- Bachelor of Science Degree in Chemistry from the University of California
- Completed one year training program, California State Department of Health
Services (DOHS) approved, for Clinical Toxicologist Technologist. This
course covered the analysis of biological samples for alcohol and/or drugs.
It also covered pharmacology and pharmacokinetics of drugs and alcohol.
Passed state board exam.
- Completed one week training course, DOHS approved, for Forensic Alcohol
Supervisor. Passed DOHS licensing exam for Forensic Alcohol Supervisor.
- Completed factory training on the Intoxilyzer Model 5000.
- Completed three and one half day course on fuel cell technology given in
cooperation between Draeger Safety, Inc. and California Department of
Justice. Course included use of Alcotest 7410 Plus (EPAS) and Alcotest 7110.
- Attended the International Symposium on Alcohol, Drugs and Driving; FBI
Academy, Quantico, Virginia. The topics covered included the pharmacology
and phamacokinetics of alcohol and/or drug intoxication and their effects
on the ability to drive. The signs and symptoms of drugs of drugs of abuse
were covered. Also covered were the analytical approaches used in determining
various alcohol and/or drug levels.
- Attended numerous California Association of Toxicologist's workshops
and seminars. These include CAT's Workshop on Alcohol and CAT's
Workshop on Drugs and Driving. These and many of the regular meetings
addressed the signs and symptoms of drugs of abused influence and the
effect of various drugs of abuse on driving ability Studied many texts,
publications, studies, and manuals (including FST and DRE manuals) relating
to alcohol and/or drug influence and detection. Also covered were analytical
procedures and interpretation of test results.
- Directed or participated in nine studies, involving over 100 subjects,
investigating the effects of alcohol on a person's ability to drive,
perform field sobriety tests, and/or perform related tasks. Some of these
studies involved determining partition coefficients between blood and
breath or between blood and urine.
- Successfully completed three day NHTSA/IACP Standardized Field Sobriety
Testing Course 11/12/2006.
- Successfully completed four day NHTSA/IACP Standardized Field Sobriety
Testing Instructor Course 2/17/2008.
California Licenses & Professional Memberships
- Clinical Toxicologist Scientist - Since 1975, Forensic Alcohol Analyst
- Since 1979, Forensic Alcohol Supervisor - Since 1980
- Bay Area Forensic Lab is listed as a "Forensic Alcohol Laboratory"
with California Department of Health Services. Member of California Association
of Toxicologists "