Extreme DUI Attorney in Contra Costa County

DUI-Only Defense for High-BAC Charges Throughout Contra Costa County

A BAC of 0.15% or higher changes the nature of a DUI charge in California. Under Vehicle Code section 23578, that elevated reading becomes a sentencing enhancement the court is required to consider, exposing you to harsher penalties than a standard first-offense DUI. At The Blalock Law Firm, PC, we defend extreme DUI charges throughout Contra Costa County. Attorney Blalock personally handles every aspect of your case from the first call through the final court appearance, and our practice is devoted entirely to DUI defense.

If you were arrested for DUI with a high BAC, the 10-day window to request a DMV hearing starts immediately. Call (925) 259-3270 now for a free consultation, and we can send the DMV letter on your behalf.

What California’s Extreme DUI Enhancement Actually Means

California doesn’t have a separate criminal charge called “extreme DUI” the way some other states do. VC 23578 is a sentencing enhancement applied on top of an underlying DUI conviction under VC 23152 or VC 23153. When a driver’s BAC registers at 0.15% or higher, or when they refused a breath or urine test, the statute instructs the court to treat that fact as a special factor when deciding penalties, probation terms, and whether to impose additional conditions.

A 0.15% BAC is nearly double the 0.08% legal limit. That gap matters to prosecutors and judges alike. An arrest at that level triggers two separate proceedings simultaneously: a criminal case handled by the Contra Costa County District Attorney and a DMV Administrative Per Se (APS) hearing to determine whether your license is suspended. These proceedings run independently. Winning one doesn’t decide the other.

Enhanced Penalties at the 0.15% & 0.20% Thresholds

The consequences available under VC 23578 are discretionary, not automatic. The court shall consider the high BAC as a special factor, which means the outcome at sentencing depends substantially on how the case is presented. That distinction is where effective defense work makes a difference.

Potential consequences at 0.15% or higher include:

• Extended jail terms beyond standard DUI minimums
• Longer license suspension periods
• Mandatory ignition interlock device (IID) installation
• Higher fines and court fees
• Longer DUI education programs

At 0.20% or higher, a 9-month DUI school becomes mandatory rather than optional, and the court may order enrollment in an alcohol treatment program as a condition of completing your sentence. Even if the criminal case is reduced or dismissed, some DMV administrative consequences can remain unless they’re properly contested through the APS hearing process. A conviction can also affect professional licenses, employment, and insurance rates.

How Contra Costa County Courts Handle Extreme DUI Cases

Contra Costa County DUI cases are prosecuted across three courthouses depending on where the arrest occurred: the A.F. Bray Courthouse in Martinez, the George D. Carroll Courthouse in Richmond, and the Richard E. Arnason Justice Center in Pittsburg. Felony-level and more serious DUI matters are typically handled in Martinez. Misdemeanor extreme DUI cases from Walnut Creek and surrounding areas go through the Walnut Creek courthouse.

Attorney Blalock appears personally at every Contra Costa County Superior Court hearing and every DMV hearing for our clients. No associate attorneys, no hand-offs. On the DMV side, you have 10 days from your arrest to request a DMV hearing, or your license suspension becomes automatic 30 days later. We send the DMV request letter at no charge as part of our representation.

Defense Strategies for High-BAC Charges

A BAC above 0.15% isn’t an automatic conviction. The number itself can be challenged, and so can the circumstances that produced it. Attorney Blalock’s DUI training from Harvard Law School informs a case review that goes well beyond the face of the police report. We also work with investigators who understand local law enforcement protocols in Contra Costa County, which shapes how we evaluate the evidence in each case.

Defense approaches we examine in every extreme DUI case:

• Lawfulness of the stop and arrest: Whether the officer had reasonable suspicion to pull you over and probable cause to arrest
• Breath test accuracy: Device calibration records, administration procedures, mouth alcohol contamination, and medical conditions such as GERD or diabetes that can inflate readings
• Rising BAC defense: Whether your BAC was actually below 0.15% while driving but climbed before the test was administered
• Blood test integrity: Chain of custody, lab procedures, fermentation errors, and improper storage
• Plea negotiations: When the enhancement can’t be defeated outright, we work to reduce the charge, limit its impact at sentencing, or seek alternative sentencing in place of additional jail time

Why Clients Facing Extreme DUI Charges Choose The Blalock Law Firm, PC

Our practice covers one area of law: DUI defense. That focus means every strategy we develop, every motion we file, and every negotiation we conduct is grounded in deep familiarity with DUI charge types, including VC 23578 enhancements. When you hire The Blalock Law Firm, PC, Attorney Blalock personally handles your case from start to finish. You won’t be passed to an associate, and you won’t wonder who is walking into court on your behalf.

99% of our clients avoid additional jail time. That’s not a guarantee of any individual outcome, but it reflects what focused, thorough DUI defense can accomplish. We charge a flat-rate fee with flexible payment plans so financial pressure doesn’t force a bad decision about your defense. Every free consultation includes an honest assessment of your situation, likely timelines, and best- and worst-case scenarios. Attorney Blalock has also recorded three informational videos explaining the California DUI process, which we share with every new client so you understand exactly what to expect before we begin.

The 10-Day Deadline Can’t Wait

After a DUI arrest, you have 10 days to request a DMV APS hearing, or you lose the right to contest your license suspension before it takes effect. Reaching out to an extreme DUI attorney in Contra Costa County right away protects that option and gives us time to build your defense before the criminal process accelerates.

Call The Blalock Law Firm, PC at (925) 259-3270 or use our online contact form to schedule your free consultation. Attorney Blalock can personally review your case, explain your options, and tell you exactly where things stand.