Processes Unlimited International Inc., a Bakersfield-based engineering, design and project management company, is being acquired by a 13,000-employee Canadian firm.

Processes Unlimited, also known as ProU, has about 450 employees, most of whom work in Bakersfield. The company was founded in 1985 and has seven offices in California, Georgia, Tennessee and Texas.

The buyer, Edmonton, Alberta-based design firm Stantec Inc., does planning, architecture, surveying and other work in the areas of energy and infrastructure. It trades on the New York Stock Exchange under the symbol STN.

The sale is expected to close in March.

McMillin staff are expected to stay on locally, working under Cornerstone, according to a news release. It said McMillin, which is part of The Corky McMillin Cos., will focus on developments elsewhere. It has operations in Southern and Central California, as well as San Antonio, Texas and Branson, Mo.

Cornerstone has built more than 15,000 homes in more than 60 developments in California and Nevada. Among the McMillin projects it is taking over are Saybrook and Sanibel developments at Bridgeton.

Visalia-based Quad Knopf, an engineering, surveying and environmental firm with an office in Bakersfield, has merged with Fremming, Parson and Pecchenino.

FP&P, as the Merced firm is known, was formed 62 years ago. Quad Knopf was founded 40 years ago and has offices in Roseville, Fresno, Visalia and Bakersfield.

The combined company has about 100 employees and will go by the name Quad Knopf.

Crimson Renewable Energy LP has won a $5 million California Energy Commission grant to expand its Bakersfield biofuels refinery.

The Denver-based company plans to begin work soon allowing it to increase its refining of corn-oil byproduct and broaden its use of materials such as algae oil.

The expansion is expected to be complete in spring 2015.

The DoubleTree by Hilton Hotel Bakersfield has changed hands.

The 262-room hotel on Rosedale Highway near Highway 99 was part of a seven-property portfolio sold by Maryland-based CWCapital Asset Management LLC to Los Angeles-based investment firm CIM Group.

A Bakersfield company that provides training for search and rescue services recently completed a contract in Peru.

SRT Helicopters trained employees of Canadian company Great Slave Helicopters on search and rescue, hoist operations, firefighting and mountain flying over a 14-day period.

A national landscape management franchise is looking to recruit a local person to open a location in Bakersfield .

The Grounds Guys, a subsidiary of Texas-based The Dwyer Group Inc., hopes to add one Bakersfield franchise and 23 others across California over the next year. The company has more than 100 franchises in the United States and Canada.

The franchise manages commercial and residential landscapes, providing basic lawn care, eliminating weeds, controlling pests and installing irrigation systems.