Construction of the massive Union Oil reservoirs on Tank Farm Road in 1910. In the era before diesel fired bulldozers, 300 teamsters were required to run the horse teams excavating 80,000 cubic yards of earth from each reservoir. Each reservoir cost $250,000 (about $6,000,000 in 2016 dollars.) The roof on the largest reservoir could have covered Spanos Stadium.
Construction of the massive Union Oil reservoirs on Tank Farm Road in 1910. In the era before diesel fired bulldozers, 300 teamsters were required to run the horse teams excavating 80,000 cubic yards of earth from each reservoir. Each reservoir cost $250,000 (about $6,000,000 in 2016 dollars.) The roof on the largest reservoir could have covered Spanos Stadium. Courtesy of Chevron Chevron photo
Construction of the massive Union Oil reservoirs on Tank Farm Road in 1910. In the era before diesel fired bulldozers, 300 teamsters were required to run the horse teams excavating 80,000 cubic yards of earth from each reservoir. Each reservoir cost $250,000 (about $6,000,000 in 2016 dollars.) The roof on the largest reservoir could have covered Spanos Stadium. Courtesy of Chevron Chevron photo

SLO tank farm was once one of the world’s epic construction projects

November 21, 2016 7:50 PM

About Photos From the Vault

David Middlecamp

@davidmiddlecamp

Photographer David Middlecamp has been delving into The Tribune's archives to share historical photos and articles about the Central Coast with readers since 2007. Reach him at dmiddlecamp@thetribunenews.com .