Phoenix Extreme DUI Lawyer
Former Maricopa County Prosecutor. 25+ Years Defending Extreme DUI Charges.
An extreme DUI charge under ARS 28-1382 carries mandatory minimums that can’t be suspended until served. A BAC of 0.15% or higher places you in a category where the penalties are rigid, the timeline is unforgiving, and the quality of your defense is a consequential variable in what happens next.
I’m Marc Koplow. Before founding The Koplow Law Firm in 2005, I prosecuted DUI cases in the Vehicular Crimes Section of the Maricopa County Attorney’s Office. That background gives me direct knowledge of how the state assembles extreme DUI cases and where they tend to break down. With 25+ years of criminal law experience and advanced training in DUI forensics and blood alcohol testing, I know what to look for that other attorneys often miss.
Every case I take is handled directly by me. Not a junior associate.
When you need a Phoenix extreme DUI attorney, call (602) 560-7837 or contact The Koplow Law Firm online.
What Arizona’s Extreme DUI Law Actually Says
Under ARS 28-1382(A)(1), extreme DUI is defined as operating a vehicle with a blood alcohol concentration (BAC) of 0.15% or higher but less than 0.20% within two hours of driving or being in actual physical control of the vehicle. It’s a Class 1 misdemeanor, Arizona’s most serious misdemeanor category, not a felony absent aggravating factors.
A BAC above the threshold doesn’t automatically mean a conviction. The state must prove the BAC was within the two-hour window and that every step of the testing process was conducted properly. Those are two distinct requirements, and either can be challenged.
I’ve fought DUI charges across the full range of severity, from cases dismissed outright to minimum-penalty outcomes, and I review other attorneys’ prior work when clients believe overlooked defense options exist. I’ve also appealed DUI convictions where the trial record supported it. An extreme DUI charge is not a foregone conclusion.
Penalties for a First-Offense Extreme DUI in Phoenix
A first-offense extreme DUI conviction carries a mandatory minimum of 30 consecutive days in jail. Under ARS 28-1382, a judge may suspend all but 9 of those days if you install a certified ignition interlock device (IID) for 12 months. Probation and sentence suspension aren’t available unless the mandatory minimum is served. The IID provision is the one exception the statute allows.
Combined fines, surcharges, and mandatory assessments under ARS 28-1382 typically total approximately $2,500 for a first offense. That figure reflects the full stack of base fines, state surcharges, and required fees, not a single line-item fine.
Additional conviction requirements include:
- Mandatory IID installation for at least 12 months upon license reinstatement
- Alcohol and drug screening, education programs, and treatment
- Community service hours
Collateral consequences extend well beyond the courtroom:
- 30-day vehicle impoundment upon arrest
- Mandatory SR-22 high-risk insurance filing, which substantially increases premiums and follows the driver for at least three years
- A permanent criminal record that Arizona doesn’t allow to be expunged
- A set-aside may be available after completing all sentence requirements, but the underlying conviction remains visible to employers, landlords, and licensing boards
- Licensed professionals, including physicians, nurses, attorneys, and real estate agents, may face separate licensing board review
What Happens to Your License
An extreme DUI arrest triggers an automatic administrative license suspension by the Arizona Motor Vehicle Division (MVD) under ARS 28-1321, Arizona’s implied consent law. This suspension runs on its own timeline, separate from the criminal case. You have 15 days from the suspension notice to request a hearing with the MVD. Missing that deadline waives your right to contest the administrative suspension entirely.
Depending on where the arrest occurred, hearings may be scheduled at Phoenix Municipal Court or a Maricopa County Justice Court. A restricted driver’s permit for work or school travel may be available during the suspension period, but eligibility depends on case-specific factors and isn’t automatic.
Additional license consequences to know:
- CDL holders: A CDL suspension of one year applies, directly threatening commercial driving employment.
- Out-of-state drivers: Arizona suspension activity is reported to other states and can affect your driving record in your home state.
Second & Third Extreme DUI Convictions
A second extreme DUI conviction within 84 months carries a mandatory minimum of 120 days in jail with at least 60 served consecutively, combined fines and assessments of approximately $3,250, at least 30 hours of community restitution, a one-year license revocation, and mandatory IID installation for at least one year.
Prior DUI convictions from other states may count toward Arizona’s 84-month lookback period for enhancement purposes. A third DUI conviction of any type within 84 months constitutes aggravated DUI under ARS 28-1383, a Class 4 felony, carrying a minimum of four months in state prison and fines up to $20,000. Work release and home detention are generally unavailable, though specific terms depend on the county and the facts of the case.
Why the Extreme DUI Threshold Is More Questionable Than It Looks
I’d argue a more accurate label for extreme DUI would be “hyperbole DUI.” Here’s an example that explains why.
Imagine John and Fred have identical circumstances. They drank the same amount of alcohol, and their bodies process alcohol the same way. Ten minutes after leaving the bar, both are pulled over for DUI. That’s where the identical paths split.
John’s officer draws his blood within 30 minutes of the stop. His BAC comes back at 0.18%. Fred’s officer can’t draw blood until over an hour after the stop. His result comes back below the extreme DUI threshold.
Same amount of alcohol. Essentially the same person. Two different charges, determined entirely by when the test happened. The two-hour rule under ARS 28-1382 requires the state to establish that BAC was at or above 0.15% within two hours of driving. When there are delays in drawing blood or administering a breath test, the measured BAC may reflect alcohol still absorbing into the bloodstream, not what was actually in the system at the moment of driving. That’s a rising BAC defense, and it’s a scientifically grounded argument, not a technicality.
Procedural errors by the arresting officer, delays in testing, and improper chain of custody at the crime lab are all legitimate points of challenge. My defenses frequently target these forensic flaws and constitutional violations in the evidence collection process. If something went wrong between the stop and the reported number, I want to know about it.
How the Extreme DUI Process Works in Phoenix
After an extreme DUI arrest in Phoenix, you’ll be processed at a city or county facility and must attend an arraignment, typically at Phoenix Municipal Court or a Maricopa County Justice Court, depending on where the arrest occurred. Court notices carry hard deadlines, and missing them can cost you options you can’t get back.
Running parallel to the criminal case is the MVD administrative process, which operates on its own timeline. The 15-day deadline to request a license suspension hearing applies regardless of what’s happening in criminal court. During the pendency of the case, you may also face interim conditions such as alcohol monitoring or restricted driving privileges.
Typical stages of the extreme DUI process in Phoenix:
- Initial arrest and processing at a city or county facility
- Arraignment appearance in Phoenix Municipal Court or a Maricopa County Justice Court
- Pre-trial negotiations and motions with the prosecutor
- MVD license suspension hearing with the Arizona Motor Vehicle Division
- Trial or plea agreement, followed by sentencing if applicable
My Approach to Extreme DUI Defense in Phoenix
I don’t accept the BAC number the state presents as the end of the analysis. Before founding this firm, I prosecuted DUI cases in the Maricopa County Attorney’s Office Vehicular Crimes Section. I know how those cases are built, which means I know where to look for the points where they can come apart.
My forensic training goes beyond general DUI defense. I received the AACJ Outstanding Contribution to DUI Defense Award, the first award of its kind ever given by the Arizona Attorneys for Criminal Justice, and the AACJ President’s Commendation for my work in State v. Diaz, a case that challenged and ultimately overturned a statute permitting warrantless blood seizure. The Fourth Amendment issue at the center of State v. Diaz remains a viable suppression argument in cases where law enforcement drew blood without a warrant. I’m also regularly invited to train other attorneys across Arizona and nationally on DUI and vehicular crimes defense, and I’ve been recognized by Southwest Super Lawyers from 2019 through 2025.
With more than 300 jury trials behind me, here is what I examine in every extreme DUI case:
- The initial traffic stop: Did the officer have reasonable suspicion to pull you over? An unlawful stop can lead to suppression of everything that followed.
- Field sobriety test administration: Were the tests administered and scored correctly? Ground conditions, footwear, instruction accuracy, and the inherent subjectivity of these tests all factor in.
- Breathalyzer calibration and maintenance: I review the calibration and maintenance logs for the Intoxilyzer 8000. Documentation gaps or calibration failures can produce unreliable results.
- Blood draw procedure: Was the blood drawn by a certified technician? Was the sample properly preserved? Was chain of custody maintained through the crime lab? Any break in that chain is worth examining.
- The two-hour window: Was the test administered within the statutory two-hour window required under ARS 28-1382? A test outside that window may not support the charge.
- Rising BAC defense: Alcohol continues absorbing into the bloodstream for a period after drinking stops. If BAC was still rising at the time of the test, the actual BAC at the moment of driving may have been below 0.15%, even if the reported number exceeded it. This argument requires deep familiarity with alcohol absorption and elimination rates, which is exactly the kind of forensic detail my defense is built on.
Discuss Your Case with Me Directly
If you’ve been arrested for extreme DUI in Phoenix or anywhere in Maricopa County, don’t wait. I offer free consultations, I’m available 24/7, and I work one-on-one with every client to build a defense around the specific facts of their case. When you hire The Koplow Law Firm, founded in 2005 and backed by 25+ years of criminal law experience, you work directly with me.
To get started, call (602) 560-7837 or reach out online.
Hear From the People We’ve Helped
Testimonials and Reviews
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"Great trial attorney."
Lawrence is tenacious, relentless, and extremely passionate about his clients and their cases. He leaves no stone unturned in his investigations, and his cross examinations are grueling. His knowledge of the science of DUI's and the testing procedures is unsurpassed. Great trial attorney.
- Jesse S. -
"Unquestionably one of the top DUI/ criminal defense attorneys in Arizona."As a practicing attorney in DUI and criminal defense, and as a former prosecutor who went against Lawrence on several cases, I can attest that the State knows they will have their hands full when Lawrence is on the case.- Ryan M.
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"You cannot go wrong with Lawrence."
Great attorney! Lawrence thinks outside the box and goes above and beyond for his clients and the legal community at large. If you are looking for aggressive representation, you cannot go wrong with Lawrence.
- Charity C. -
"No other lawyer knows the science of DUI like Lawrence does."Lawrence is the best lawyer I have ever met. If your career is on the line then he is the guy. No other lawyer knows the science of DUI like Lawrence does. I will be forever grateful!- Greg S.
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"It was miracle!"
It was miracle!... A lot of people don't really understand the benefit of having an attorney who used to be a prosecutor. They know all the little tricks and scare tactics the state has as opposed to just hiring an attorney who is a little fish in a big pond.
- Joe C. -
"One of the best."Lawrence Koplow is one of the best DUI and vehicular defense attorneys in the state of Arizona. Anyone would be extremely fortunate to have him as their advocate.- Jack L.
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"You cannot go wrong with Lawrence."Lawrence thinks outside the box and goes above and beyond for his clients and the legal community at large. If you are looking for aggressive representation, you cannot go wrong with Lawrence.- Charity C.
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"Nobody knows the court and laws better than him."Lawrence represents very high-profile clients who greatly depend on a good outcome, and this guy will deliver. This is a prosecutors' worse nightmare, and it should be that way if you need an attorney.- David E.
DUI Library
The best DUI defense stuff that only a few know and none want to share. A one of a kind annotated resource for lawyers, people accused, or anyone who wants to see what’s going on in our justice system with DUI cases… and how to fix it.
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Scottsdale DUI Definitive GuideScottsdale DUI Definitive Guide
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The Definitive Guide to Defeating an Arizona DUIThe Definitive Guide to Defeating an Arizona DUI
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Field Sobriety Tests in Arizona DUI CasesField Sobriety Tests in Arizona DUI Cases
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Traffic Stops in Arizona DUI CasesTraffic Stops in Arizona DUI Cases
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Warrantless Blood Draws in Arizona DUI CasesWarrantless Blood Draws in Arizona DUI Cases
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Right to Counsel in Arizona DUI CasesRight to Counsel in Arizona DUI Cases
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Failure to Preserve EvidenceFailure to Preserve Evidence