About Us

Calvac Paving, Inc. is a full-service asphalt and concrete maintenance company that has been servicing the Greater Bay Area since 1974.

As long-standing members of the Building Owners & Managers Association (BOMA), both in the Silicon Valley and the East Bay chapters, the California Apartment Association (CAA), the National Association of Industrial and Office Properties (NAIOP), the Executive Council of Home Owners (ECHO), the Association of Commercial Real Estate Managers (ACREM), Commercial Real Estate Women (CREW), the Western Manufactured Housing Communities Association (WMA) and the California Association of Community Managers (CACM), we are fully aware of industry design criteria and special requirements.

Tami Adam Owner of Calvac Paving Greater Bay Area

Tami Adam


Tami Adam met Jim Adam in 1978 and were close friends when he started his career with Calvac Inc in 1979. They were married in 1983 and started their own paving and concrete business in 1987. Looking to become a partner, Jim came back to work for Calvac in 2002. After years of focusing on ADA barrier removal projects, Jim applied this experience with extensive studies and passed the exam to become a CASp, Certified Access Specialist, in 2012, in which the company continues to specialize into this day. Jim became the sole owner of Calvac Inc. in 2018, continuing the expert work Calvac Inc. is known for servicing the Bay Area and beyond. Tragically, Jim passed away in 2020, and his son, Joe Adam, took up the reins of Calvac Inc., and Tami took over ownership. Together, they are continuing the legacy that started over 40 years ago.

Dan Garson President CEO of Calvac Paving Greater Bay Area

Dan Garson

President and CEO 

As the CEO and President of the Calvac team, Dan brings expert leadership, enthusiasm, and passion to the role. He holds an MBA and a BS in Chemical Engineering and brings a wealth and depth of knowledge to Calvac and the industry. He gained executive leadership experience in the paving business while helping to successfully grow another paving contractor in the Bay Area. Dan is responsible for overseeing all facets of the organization, from sales and operations to safety regulations, and he is committed to the advancement of the company’s mission and values. His priority is refining the day-to-day operations in accordance with the values and business goals of the company, following in the footsteps of Joe and Jim Adam.
Dan brings a dynamic, effective, and motivational leadership style to Calvac and promises to “roll up his sleeves” in his new role with the Calvac Team.

Laura Perez Accounting Manager of Calvac Paving Greater Bay Area

Laura Perez

Accounting Manager

Laura Perez joined Calvac Paving in September of 2017 as their Administrative Assistant before taking on the position of Accounting Manager in April of 2021.

Laura manages all accounting transactions. Prepares budget forecasts, publishes financial statements, reconciles accounts payable and receivable, ensures timely bank payments, oversees payroll, reinforces financial data confidentiality, and conducts database backups when necessary. She complies with financial policies and regulations and has an excellent knowledge of accounting regulations and procedures, including the Generally Accepted Accounting Principles (GAAP).

Dave Flores Vice President of Calvac Paving Greater Bay Area

Dave Flores

Vice President

Dave moved to the Bay Area in 1980 to study at San Jose State, as a freshman, he took on a part-time job with a local paving company. With his hard work ethic and leadership, he became the paving foreman, and then superintendent taking on the responsibility of large crews and building projects of all sizes. In the mid-’90s, he moved up in the ranks to project manager, overseeing and managing large commercial, industrial, and public work jobs. Dave eventually moved into estimating, bidding on private and public work of all sizes. As the company grew, Dave was promoted to Vice President in the early 2000s overseeing all operations and continued to take care of his clients in the estimating department, ultimately, Dave was promoted to President when everything became his responsibility.
In 2012, Dave was given an opportunity to join the Calvac team as an estimator and project manager. His extensive experience will provide you with professional service and competitive pricing for any commercial, industrial, and or public work jobs. He likes working with Calvac Paving, the office staff, his co-workers, and ownership have always been of great support.
When Dave’s not working, he enjoys spending time with his family, good food, and a good golf course.

Marissa Burton Office Manager of Calvac Paving Greater Bay Area

Marissa Burton

Office Manager

Marissa Burton graduated from San Jose State University with a Bachelor’s degree in Sociology. Shortly after graduating, she joined Calvac Paving as the Administrative Assistant before taking over as Office Manager in July of 2022. Among her other capabilities and points of knowledge, Marissa is the primary point of contact for insurance requirements, preliminary information requests, safety information, and vendor qualifications. With her positive, friendly, and professional attitude, she will make every effort to answer your project planning questions and concerns honestly and accurately.

Greg Bergman Lead Estimator of Calvac Paving Greater Bay Area

Greg Bergman

Lead Estimator

Greg started in the industry in 1982 and after 25 years with the same company. Starting out as a laborer with the seal coat division, Greg worked his way up to Vice-President of the company, where he was in charge of large commercial and industrial accounts, both as an Estimator and Project Manager. Greg joined the Calvac team in September of 2007 as our Lead Estimator and Project Manager, focusing on commercial and industrial projects. His years of experience will provide you with truly professional service for any of your project needs, from new commercial construction to school or municipal projects to simple patch and seal coat.


In Loving Memory of


Jim Adam


Jim Adam started working at Calvac Paving in 1979, where he spent 8 years as a foreman and superintendent. Wanting to expand his experience outside of the field, he left Calvac Paving in 1987 to pursue other passions. As a result, Jim gained valuable experience running his own paving and concrete company and helped to grow another paving contractor in the Bay Area while focusing on providing service to Property Managers and Owners throughout the Bay Area. Looking to become partners, Jim came back to work for Calvac Paving in 2002. After years of focusing on ADA barrier removal projects, Jim applied this experience with extensive studies and passed the exam to become a CASp, Certified Access Specialist.