Boom trucks and operators requiring DOT certification and OQ evaluations at oil and gas worksite

Your OQ compliance and safety needs require an expert’s touch



Years in the field



Evaluations completed



Evaluations completed



Happy customers

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Get to know STOQ

Your trusted partner in OQ

We are dedicated to ensuring all your compliance and safety needs are met. Many project managers and contractors come to us with tight deadlines and mounting stress. Our highly trained team of OQ experts are ready to meet any challenge you’re facing head on. When you work with STOQ, you’ll feel confident your crew is in the best hands.

Why we’re different

Here’s why STOQ is a leader in the operator qualifications industry

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Long-standing industry experience

We have been in the oil and gas industry for over 20 years, with the last 10 years focused on operator qualifications evaluations, training, and certification.

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Focus on efficiency

We understand the importance of starting your project on time, and that’s why our process is productive. With our experience, we can develop an OQ plan in just one call.

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Always accurate

We ensure our evaluations are always correct and completed without bias, so you can be confident about your authorization and your project.

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Building relationships

We’re in this for the long term. It’s important for us to understand your project and your business so we can offer the OQ services you need, now and in the future.

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Highly trained evaluators and instructors

We maintain our Veriforce Authorized Evaluator and EWN Master Evaluator and Master Trainer credentials, and competent person and safety certifications. Plus, we stay up to date with the ever-changing oil and gas industry.

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Expert insight

We have built a network of contacts within the compliance ecosystem, ensuring our clients have access to the information and answers they need right away.

Our satisfied clients


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The STOQ team

Our focus is on understanding your needs

Every member of the STOQ team believes in the work we do. We understand what’s at stake when it comes to OQ, and that’s why we dedicate ourselves to ensuring every compliance and safety requirement is met accurately and efficiently.

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The STOQ team

Operator qualifications experts

Ferrell Tuttle

Lead Evaluator & Safety Instructor

Ferrell is an expert in providing third-party operator qualification evaluations and safety instruction to the oil and gas industry to meet DOT regulatory compliance standards.

STOQ Evaluator Team

Evaluators & Safety Instructors

STOQ has a team of bilingual OQ evaluators who maintain all the required compliance certifications, and keep up to date with their industry training.

Jan Gonzales

Operations Manager

Ensures contractors have the required training and certifications they need.

Stephen Gaskin

Process Operator/ Evaluator

30-plus years of experience working in the chemical industry. Passion for training and guiding colleagues.

Darrick Green


Our team is dedicated to your crew

Let’s get started on your OQ plan now. Are you ready?