On-Site Engineering & Asphalt, Inc. Return to Directory Contact Kenneth A. PinkhamAddress 3303 A Swetzer RoadCity LoomisState CAZIP Code 95650Business Phone 1 916 652-0600Business Fax 1 916 652-0610CSLB Number https://www2.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=851332Specialty Excavating, Commercial, Grading, Commercial, Paving Contractors, Asphalt & Concrete, Sitework & Development, Underground Construction