ABOUT SERVICES WHY SIERRA CHEMICALS? CONTACT US CAREERS OUR TURNAROUND PROJECTS Explore Our Recent Successful Projects That Increased Safety and Efficiency. DCP Midstream Artesia – Artesia, New Mexico (2020) PROJECT HIGHLIGHTS Nine onsite cleaning days 322 job-site hours OUR SCOPE OF WORK Preparation of vessels for cleaning and entry Clean-in-place chemical circulations of nine towers/vessels Automated hydroblasting/hydro-lancing of 14 heat exchangers 2D/3D blasting of amine still, amine still reboiler, stabilizer feed tank, rich amine flash tank and stabilizer reboiler Automated hydro-lancing of over 1,700 heat exchanger tubes Hess Corporation Tioga Gas Plant – Tioga, North Dakota (2020) PROJECT HIGHLIGHTS 14 onsite cleaning days 124 job-site hours SCOPE OF WORK Preparation of vessels for cleaning and entry Over 28,000 square feet of fin fan cleaning Automated hydro-blasting and clean-in-place chemical circulation at four compressor stations Automated 3D/2D hydro-blasting of four inlet separator process tanks Automated hydro-lancing of four heat exchangers containing over 2,036 tubes in total Waterless clean-in-place chemical circulation of plate and frame and tube and shell heat exchangers WHY SIERRA CHEMICALS? Explore our track record and proven processes. SEE THE SIERRA DIFFERENCE FROM OUR PARTNERS “Our 2021 turnaround was one of the largest midstream TARs in 2021. Sierra used 2D/3D waterjetting technology to clean some of our most difficult and largest vessels in our plant. From Sierra’s clean-in-place chemical circulations to their waterjetting technology, we were pleased with results from their cleaning techniques. Sierra not only finished within schedule but under budget.” – Leading North Dakota (Bakken) Midstream Provider TALK TO OUR TEAM Send a message or request a quote. CONTACT US This product meets Green Seal™ Standard GS-37 based on effective performance, concentration of product, minimized/recycled packaging, and protective limits on: VOCs and human & environmental toxicity. GreenSeal.org © 2021 Sierra Chemicals LC | All Rights Reserved

ABOUT SERVICES WHY SIERRA CHEMICALS? CONTACT US CAREERS CAREERS Join Our Team. Become a part of a team committed to safety and excellence, with opportunities for advancement. Sierra Chemicals offers a solid benefits package, comparable to most large companies. Benefits for full-time positions include 401(k), 401(k) matching, dental insurance, health insurance, health savings account, life insurance and vision insurance. Since 1995, Sierra Chemicals provided clients with solutions to their plant challenges. We understand our employees are our most valuable asset and make the difference in our commitment to safety, our hands-on approach to quality and our day-to-day relationships with our clients. SIERRA CHEMICALS JOBS This product meets Green Seal™ Standard GS-37 based on effective performance, concentration of product, minimized/recycled packaging, and protective limits on: VOCs and human & environmental toxicity. GreenSeal.org © 2021 Sierra Chemicals LC | All Rights Reserved