SANTA ROSA -- North Bay engineering firm Carlenzoli Associates has merged with Redwood City-based giant BKF Engineers.

The new company, BKF/Carlenzoli Engineers, Surveyors and Planners, officially launched with the signing of the deal, which was the result of about a year of negotiations.  BKF is responsible for many widely recognized projects including Sonoma Mountain Village in Rohnert Park and the U.C. Berkeley School of Business.

The Santa Rosa office will remain at 325 Tesconi Circle and is BKF’s first North Bay location. The company currently operates eight in the Bay Area, Sacramento and Orange County.

Carlenzoli Vice President Greg Hurd worked for BKF during college and said informal conversations concerning a merger have occurred over several years.

"The impetus behind the merger was a mutual desire to offer more services," Mr. Hurd said.

Details of the deal, finalized Monday, were not released, but Mr. Hurd will stay on as vice president and principal in charge of the Santa Rosa branch. Carlenzoli co-founder Leroy Carlenzoli will stay on as a senior consultant.

Established in 1915, BKF generates annual revenues of about $51.5 million. In 2009, BKF was listed as the No. 1 engineering firm in the Silicon Valley by the Silicon Valley Business Journal and is among the largest in the Bay Area.

Carlenzoli launched in 1987 was ranked among the top 25 largest engineering firms in the North Bay by the North Bay Business Journal last year. The company reported revenues of about $2.6 million in 2008 and completed large projects for Burbank Housing, the county of Sonoma, Trione Winery and St. Joseph Health System Sonoma County.