Constellation Brands is closing its Quarry Lake production facility in Sonoma, eliminating seven jobs and erasing a longtime workhorse from the local wine map. Operations at the site are set to end on June 25, according to a state filing, wrapping up a summer wind-down at a campus that handled several of the company’s higher-volume labels and earned internal sustainability recognition in 2024.
State Notice Lists Closure, Seven Jobs Affected
A late April regulatory filing lays out the shutdown and lists seven positions to be cut: five cellar workers, a mechanic and a foreman, with separations beginning in June. As reported by the East Bay Times, the notice is dated April 24 and pegs June 25 as the anticipated last day of operations. The document serves as the formal record of the closure but does not spell out broader brand or facility plans for the company.
Quarry Lake Handled Major Labels and Won Sustainability Praise
The Quarry Lake plant has backed a slate of well-known wines, including SALDO, Double Diamond, Robert Mondavi, The Prisoner and Unshackled, and was previously tied to Meiomi before that label changed hands, according to Constellation Brands. The company spotlighted the facility in a 2024 sustainability awards post, citing energy and water projects at the site. Constellation completed the sale of several mainstream wine brands, including Meiomi, to The Wine Group in June 2025, according to Constellation Brands investor materials.
How the Site Fits into Sonoma's Production Map
The Quarry Lake campus, at 26200 Arnold Drive along the edge of a former Sonoma rock quarry, was developed in the late 1990s. Its capacity grew over time from roughly 250,000 cases per year to close to 1,000,000 cases after expansions, according to the state filing. The facility and operator appear in California water system records under the Quarry Lake Winery name at the Arnold Drive address, and local reporting tracks the property’s move into Constellation’s portfolio in the early 2000s, as noted by The Press Democrat. For the closure notice and site particulars, see the East Bay Times filing reference and the California Water Boards records.
Industry Context: Closures Stacking Up
The Quarry Lake decision lands in the middle of a run of plant closures and staffing cuts by large wine producers across Northern California, a pattern that underscores how tough the environment has become for high-volume operations. Coverage in the San Francisco Chronicle and trade reporting from Wine Industry Advisor highlight other facilities shutting down and jobs disappearing this year as companies rework portfolios and trim capacity. Industry analysts say those moves track shifting consumer tastes and a push to steer investment toward higher-margin labels.
Small Layoff, Big Legal Picture
On paper, the Quarry Lake cut is modest, with only seven workers listed, and it does not appear to reach the federal Worker Adjustment and Retraining Notification Act threshold of 50 affected employees for mass-layoff protections or the broader covered-establishment triggers in California law. The state Employment Development Department oversees WARN notices and offers Rapid Response services for workers and local workforce boards. For legal context on these rules, see the Congressional Research Service summary of the WARN Act and the California Employment Development Department guidance.
For Sonoma, the closure removes a production anchor that for decades turned out regional wines and provided steady industrial jobs. As the plant winds down this summer, workers, local officials and industry observers will be watching to see whether the Quarry Lake campus is sold off, retooled for a new use or simply left idle.
