Former Santa Rosa Councilwoman Veronica Jacobi plans to challenge Sonoma County Supervisor Efren Carrillo for his west county seat in June's election.
Jacobi, 53, a mechanical engineer and energy management consultant, served a single four-year term on the City Council before being ousted in the 2010 election when a slate of pro-business candidates shifted the council majority.
She ran unsuccessfully in 2004 and 2008 for the Board of Supervisors 3rd District seat, which includes central Santa Rosa and much of Rohnert Park.
Several weeks ago, she moved into a Roseland-area home she bought in 2010, which put her into Carrillo's 5th Supervisorial District, which takes in most of the west county, including west Santa Rosa, Sebastopol, the Russian River corridor and the coast from Bodega Bay to Mendocino County.
She said her move was motivated by her interest in challenging Carrillo, who was elected in 2008. Jacobi becomes Carrillo's only challenger so far in the contest, which has a March 9 filing deadline.
Jacobi has taken out nominating papers and filed a form declaring her intent to run.
A staunch supporter of environmental causes, Jacobi said she intends to take aim at Carrillo's voting record on land-use issues.
Carrillo, 30, has backed several controversial projects, including a large Russian River gravel mine outside of Geyserville and the Dutra Materials asphalt plant south of Petaluma.
Both projects have been tied up in lawsuits, part of a wave of legal challenges prompted by county decisions two years ago that led some advocates and constituents to question Carrillo's environmental values.
"We need to protect the beauty that we have here and the quality of life we have here," Jacobi said Friday. "I think the things he is pursuing, some of them will hurt us in the long term."