Zolfarelli joined the Livermore-Pleasanton department in 1999 from the Newark Fire Department. He was instrumental in the successful effort to develop the LPFD Hazardous Material Team and also managed the public education, disaster preparedness, and workers' compensation programs. He is an instructor at Chabot and Las Positas colleges.
Zolfarelli began his career in 1974 with the BART Police Department, moving to the San Leandro Police Department in 1977 and then joining that city's Fire Department in 1984, where he worked until 1998. He joined the Alameda County Fire Department in 1998 before moving to the Newark Fire Department.
He served on the Alameda County Fire Chiefs Operations Committee and the Alameda County Fire Chiefs Hazardous Materials Committee, the Alameda County Fire Training Committee and was a member of the East Bay Incident Management Team,
Zolfarelli's retirement comes just three months after LPFD's Fire Chief Bill Cody retired. The city managers of Livermore and Pleasanton are leading a search for Cody's successor.