Expert Profiles
Alan McCann
Alan McCann has 33 years of experience as a member of the San Francisco Police Department, as well as more than 10 years of experience as an investigator. Trained in accident investigation and reconstruction, Mr. McCann has conducted over 1,000 DUI investigations and made over 600 DUI arrests. Mr. McCann holds basic, intermediate, and advanced POST (Peace Officer’s Standards and Training) Certificates. He was also awarded the San Francisco Police Department’s highest honor, the Gold Medal of Valor.
Hallee Weingarten
Comprehensive case review including evaluation of the role of alcohol and drugs in case specific context, effects and metabolism of these substances, assessment of the reliability of alcohol and drug test procedures, regulatory compliance, evidence handling procedures, and quality assurance. Expert testimony in criminal, administrative, and civil proceedings. Assist laboratories in setting up analytical methods that meet regulatory and legal requirements and in training laboratory staff and law enforcement officers.
Certified Forensic Toxicologist, Diplomate, American Board of Forensic Toxicology Forensic Alcohol Supervisor, California Department of Health Services Clinical Toxicologist Technologist, California Department of Health Services Intoxilyzer 5000, Operation and Maintenance, CMI, Inc., Breath Alcohol Technician Instructor (certified to train trainers and technicians), CMI, Inc. Breath Alcohol Technician, CMI, Inc. (Intoxilyzer 200, 400, 5000) Breath Alcohol Technician Trainer, MedExpress Toxicology, Inc. Breath Alcohol Technician Trainer, Intoximeters, Inc.
- Certified Professional Collector Trainer, Drug and Alcohol Testing Industry Association.
- Certificate of Completion of Standardized Field Sobriety Test (SFST) Training, 2007.
Paul Cavallero
Investigator Paul Cavallero has conducted over 200 DUI investigations and regularly testifies in court as a witness on behalf of our clients. As a member of our firm for over 3 ½ years, he is responsible for gathering client discovery, delivering client motions to all Bay Area county courthouses, and photographing arrest locations.