Program Manager / Regulatory Strategist
Christine M. Halley Bio
Mrs. Halley brings four decades of civil engineering, program management, and regulatory/permitting strategy to Cornerstone’s clients. A Penn State graduate (BSCE ’81), she assists in regulatory agency interface, strategizing on CEQA compliance, and assembly of permit-required plans and reports. She has proven herself to be an adept communicator of technical settings to a variety of audiences, including elected officials, agency representatives, and the public.
Prior to joining Cornerstone, Mrs. Halley was Director of EH&S and Regulatory Affairs for a mid-size California oil producer. She represented that producer as Executive Board member of the California Independent Petroleum Association and authored, along with key technical team members, the state’s first “Surface Expression Prevention and Monitoring Plan” under CalGEM regulations. In the 14 years preceding that, she worked for TJCross Engineers – A Parsons Company as Water & Utility Consultant, assisting industry clients in water management and permitting strategy. In the early 2000’s, Mrs. Halley was Utilities Division Manager for San Luis Obispo County, responsible for a team of 32 professionals in operating the County’s utility and water supply systems. Of particular note was Mrs. Halley’s years of participation in the $180 million Nacimiento Water Supply Project for San Luis Obispo, the largest public works project undertaking by that agency at the time.
Contact Christine M. Halley
Director of Business Resources and Strategy
Kent E. Halley Bio
Arguably among the most connected professionals in the San Joaquin Valley, Kent Halley brings more than 35 years of management, sales, and marketing to Cornerstone. But he brings much more than that. Kent holds a reputation for understanding client resource needs and drivers, then aligning the right professionals for the job. He has personally played a role in placing well over 100 professionals into mid- and upper-level technical and managerial positions. In doing so, Kent repeatedly succeeds in bringing top-notch talent into the Cornerstone team on behalf of our clients.
Educated at Rio Grande University in Ohio, Kent holds degrees in chemistry and mathematics with course emphasis in business management. Industry work includes U.S. Sales and Marketing Manager for Emerson Electric Corp in the 1990’s followed by a marketing manager position for Systems Measurement Services in the years following that. As principal at TJCross Engineers, Inc. in Bakersfield, CA, for 16 years, Kent forged engineering alliance partnerships with the area’s larger oil & gas producers. He carried on that role in the years following the acquisition of TJCross Engineers by Parsons. In 2018, Kent partnered with Derrill Whitten at Cornerstone and to date, Cornerstone has grown from a civil engineering team of seven to a multi-disciplinary team approaching forty.
Contact Kent E. Halley
Phone Number(661) 331-6672
Chief Civil Engineer and Land Surveyor
Derrill G. Whitten, Jr. Bio
Derrill Whitten is the heartbeat of the Cornerstone team, having begun his career here at the firm in 1990. He anchors Cornerstone’s civil engineering and land development services and provides subject matter expertise to our surveying department. Unique among his colleagues, Mr. Whitten not only holds his civil engineering license, but he is also a registered professional land surveyor and a Grade V wastewater treatment plant operator. This rare combination of education (BS in Petroleum Engineering from University of Texas at Austin) and licensure brings well-rounded critical thinking to Cornerstone clients.
For a decade beginning in the mid-1990’s, Mr. Whitten worked for a consulting firm in his home state of Oklahoma and the City of Bakersfield Public Works Dept. Those assignments in particular blended utility operation and capital planning skills with his technical training. As a result, Mr. Whitten has been brought in to manage city-wide wastewater capital planning, treatment plant upgrades, street improvements, and campus improvements for community college district facilities. More importantly, he brings continuity and a family atmosphere to the Cornerstone team and to our long-time clients.