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Paso Robles Asphalt Plant
188 Volpi Ysabel Road, Paso Robles - 805.238.3363

In 1985, Union Asphalt, Inc. made a pivotal decision to purchase an existing quarry in Atascadero, California. This site has been transformed into what is referred to today as Rocky Canyon.
The decision to obtain the hard rock quarry proved to be one of the most prudent ventures in Union Asphalt's history. At this site the company has the ability to mine granite rock and hence offer the invaluable service of providing essential aggregates for the construction industry. A few years earlier, in 1983, Union Asphalt purchased an existing hot asphalt concrete production facility in Paso Robles.
Rocky Canyon services both its asphalt hot mix plant and ready mix operations, while supplying the needs of contractors and homeowners.
Over the years, the granite quarry and asphalt plant have undergone many upgrades and transformations and have now grown to be two of Union Asphalt's main operations in San Luis Obispo County. The quarry site spans out over 250 permitted acres, and has the capability of producing a large range of construction aggregates. The asphalt plant is situated on 11 acres adjacent to highways 101 and 46 where it produces a number of products that meet Federal, State and local specifications
 

Corporate Office 1625 East Donovan Rd. Santa Maria, CA 93454 805.922.3551