Founded in 2008, Alliance Tank Service is a turnkey tank service provider that offers premium tank-storage applications inclu ... ding: aboveground storage tank construction (API 650, API 620, and AWWA), API 653 tank repairs, civil and engineering design, concrete foundation design, drafting / engineering, cathodic protection, secondary containment and piping. January 1, 2018 Alliance Tank Service purchased Willbros Tank Services. As a combined company, Alliance Tank Service offers complete project solutions including civil work, tank construction and maintenance for our clients. We understand that schedule is the most important factor driving our clients’ work. With Alliance Tank Service comprehensive, integrated services offerings we can provide our clients with consistency, single-project management contact and schedule management throughout the project. For career information visit our website. read more