Cornerstone Engineering

Email Address

info@cornerstoneeng.com

Call Us

(661) 325-9474

Cornerstone Engineers & Advisors

Certifications

Cornerstone stays ahead by offering our clients exceptional service and cutting-edge solutions through ongoing education. We are a certified small business and women’s business enterprise. Our team holds a diverse set of certifications and as we continue to grow and adapt, we remain committed to upholding the highest standards of professionalism and excellence in all that we do.

Name License Type/Number (CA*) Valid Through
Christine M. Halley
Civil Engineer / 42090
03/31/2026
Christine M. Halley
Petroleum Engineer / 027303
12/31/2026
Derrill G. Whitten, Jr.
Civil Engineer / 51930
06/30/2026
Derrill G. Whitten, Jr.
Land Surveyor / 7816
12/31/2027
Claude A. Whitten
Civil Engineer / 63332
06/30/2026
Claude A. Whitten
Land Surveyor / 9750
03/31/2027
Clark E. Farr
Civil Engineer / 38112
03/31/2027
Michael F. Ponek
Geologist / 4926
04/30/2027
Karine M. Hochstatter
Geologist / 9948
05/31/2027
Karine M. Hochstatter
Geologist / 4265 (Wyoming)
12/31/2026
Robert M. Richmond
Petroleum Engineer / 1683
06/30/2026
Ron Kluge
Civil Engineer / 49282
09/30/2026
Jorge Garcia
Civil Engineer / 78233 (Arizona)
06/30/2026
David Pickens
Petroleum Engineer / 1568
09/30/2026
James Conners
Petroleum Engineer / 1589
09/30/2027
Denise Boshers
Certified Public Accountant / 80902
12/31/2026
Shawn Kerns
Petroleum Engineer / 14983 (Kansas)
04/30/2028
* unless otherwise noted
Our Mission and Values

We distinguish ourselves as being client-minded, seeking to advance our client’s important issues by understanding their drivers and representing their interests well with regulators.

Cornerstone’s reputation is one of matching subject matter experts to our clients’ undertakings. Our full-time staff of engineers, surveyors, and technicians are joined by specialty consultants who are renowned in their field of practice and available to step in as-needed. This has proven to be a powerful arrangement, especially for clients who are poised to invest significant capital in the highly-regulated California environment.

Our clients view us as the go-to engineering firm in the San Joaquin Valley, entrusting us with program oversight for annual capital spend as well as regulatory compliance. We are proud to advise investors who contemplate large investments in California’s carbon sequestration and/or energy production. Cornerstone is similarly proud to evaluate ground-breaking technologies with applications in specialty water treatment, gas processing, carbon capture, and carbon-free steam generation.

We would welcome hearing from you to match your project needs with our supportive technical and regulatory staff.