Services / GDF Compliance

Gasoline Dispensing Facilities (GDF) Engineering & Compliance

CARB & Air District Compliance for Fuel Retail & Fleet Operations

California gasoline dispensing facilities operate under some of the strictest vapor recovery regulations in the world. The California Air Resources Board (CARB) administers a comprehensive program covering enhanced vapor recovery system design, equipment certification, ongoing diagnostics, and periodic testing — all enforced at the local air district level through inspection and permit programs.

Our team provides specialized mechanical and environmental compliance engineering for retail gas stations, private fleet fueling systems, and commercial terminal operations. We understand the technical details of CARB Executive Orders, ISD monitoring requirements, and the specific equipment configurations that regulators inspect — so our clients are never caught off guard during a district compliance inspection.

From a single-pump corner station to a multi-dispenser fleet facility, we deliver the engineering documentation, compliance plans, and permit support your operation needs to stay in good standing with CARB and local air districts.

Core Technical Services

Enhanced Vapor Recovery (EVR) Phase I & II

CARB-mandated vapor recovery at California gasoline dispensing facilities requires compliant Phase I (underground/aboveground delivery) and Phase II (vehicle fueling nozzle) systems. We prepare installation plans, engineering upgrades, equipment compliance audits, and maintain compliance tracking records to ensure your vapor recovery systems meet current CARB Executive Orders and local air district requirements.

In-Station Diagnostics (ISD) Systems

ISD systems continuously monitor vapor recovery equipment performance and generate alarms when components fall out of specification. We provide compliance planning, alarm troubleshooting protocols, diagnostic log review, and documentation to satisfy air district inspection requirements and CARB ISD monitoring obligations.

CARB Executive Order Compliance

Each vapor recovery component must match a designated CARB Executive Order (EO) specifying approved equipment configurations, nozzle types, and operating parameters. Our engineers review your station's physical equipment against current EO requirements and prepare gap analyses and upgrade plans to bring non-conforming equipment into compliance.

Healy & Alternative Vapor Systems

Healy vapor recovery systems and other alternative technologies require specific engineering layout diagrams, maintenance compliance procedures, and updated operating procedures. We manage system-specific compliance documentation and coordinate with equipment manufacturers and air districts to keep alternative systems properly certified.

Title V Operating Permits for High-Throughput Facilities

High-volume retail fueling operations or commercial terminal setups may qualify as major sources requiring a Title V Operating Permit. Our team handles the complex application requirements, establishes monitoring and recordkeeping programs, and manages ongoing annual compliance certification obligations for these specialized permits.

Startup & Verification Testing

California regulations require periodic verification testing of vapor recovery equipment — including annual pressure decay, dynamic backpressure, and liquid blockage tests. We coordinate the scheduling, oversight, and compliance reporting of all required testing events, ensuring results are properly documented and submitted to the applicable air district.

Service Highlights

EVR Phase I & Phase II Compliance
CARB Executive Order Equipment Review
ISD System Troubleshooting & Documentation
Healy & Alternative Vapor System Plans
Title V Permits for High-Throughput Stations
Annual Pressure Decay & Backpressure Testing
Air District Inspection Preparation
Violation Response & Correction Plans

GDF compliance questions?

Regulatory Programs

CARB Vapor Recovery Program · Local Air District Permits · HSC §§41950–41964 · EVR EO Compliance

Facing a GDF compliance inspection or violation?

We know CARB's vapor recovery program inside and out. Get expert guidance before your next district inspection.

Schedule a Free Consultation

Planning your gdf compliance review

GDF compliance focuses on gasoline dispensing and vapor recovery equipment, applicable CARB Executive Orders, air district permit conditions and testing records. Underground storage tank monitoring remains a separate CUPA program.

What to prepare for a consultation

Gather your station's air permit, dispenser and vapor recovery equipment details, recent test reports and any inspection notices.

Regulatory reference: CARB vapor recovery program. Requirements vary by site and jurisdiction.

Discuss your facility or project with ECA

Your facility may have obligations across more than one program. Explore related requirements before planning your next step.