Graniterock
David Leffel, SMS, CHST, currently serves as the Occupational Health and Safety Manager and previously held the position of Safety Engineer at Graniterock since May 2019. Prior experience includes working as a Safety Specialist at Mission Bell from October 2016 to May 2019 and serving in the US Navy as a Chief Aviation Structural Mechanic from March 1991 to March 2015, where David managed and conducted maintenance on Naval aircraft and was an inspection team member for regulatory compliance. David's educational background includes training in the US Navy and studies at California State University-Sacramento between 2014 and 2015.
Graniterock
Since 1900, Graniterock has provided the California construction industry with quality materials and products for building the perfect infrastructure job, whether that's a major highway, airport runway or bridge. Recognized as one of the state's top heavy civil engineering companies, Graniterock offers experts in asphalt, concrete, aggregate, paving, grading, underground, green building and general construction services. Graniterock People say “Yes, we will” when asked to meet any customer's needs.