Tel: 303-317-6877

5460 Montana Vista Way, Suite 101

Castle Rock, CO 80108

Dan Lombardi has fifteen years of experience in mechanical engineering design. He has worked in the nuclear and oil & gas industries.  Dan is highly proficient with Siemens NX 9, SolidEdge ST5, Solidworks, Pro/Engineer, and Creo.  He has extensive experience designing ASME pressure vessels, weldments, and large industrial oil & gas skids.  Dan is an expert using ASME Y14 drawing standards, including ASME Y14.5: Geometric Dimensioing and Tolrancing.  Dan has a Bachelor of Science in Mechanical Engineering Technology from Metro State University of Denver.

R. Douglas Yester, PE, FPE, LEED AP has over fourteen (14) years of experience in the design, construction, and renovation of various commercial and governmental facilities. His background consists of a diverse project portfolio including nuclear fuel handling facilities, bio-containment and research laboratories, petroleum refineries, and military installations.  He has a Masters of Engineering in fire protection and is a licensed fire protection engineer in Colorado.

Sarah Kaiman, CIH has 15 years of experience providing environmental, health, and safety (EH&S) program support in a variety of work environments, including manufacturing, laboratory research, cleanup of contaminated sites, transportation projects, federal government facilities, and the marijuana industry. She has a passion for developing and implementing continual improvement programs aimed at improving environmental sustainability and worker health and wellness. She is passionate about seeing marijuana infused product (MIP) manufacturers be industry leaders and gain competitive edge by achieving the healthiest and most environmentally-friendly workplaces possible. She has a BS in environmental health from Colorado State University and a M.B.A from the University of Colorado at Denver.

John R. Andrzejczak, P.E. has over 30 years of experience engineering custom research and process equipment for the chemical, petrochemical, nuclear, and pharmaceutical industries.  Design experience includes the design and fabrication of pressure vessels, catalytic reactors, glovebox enclosure systems, vacuum chambers, steam sterilizers, and associated material handling equipment. He is intimately familiar with ASME Section VIII Division 1 and 2 pressure vessel design codes. Process Safety Management experience includes facilitating and scribing Process Hazard Analyses using HAZOP and What-If techniques, developing PSM systems for process plants, and developing Safety Analysis Reports for nuclear facilities. As quality assurance manager, he wrote, implemented, and maintained ASME Boiler and Pressure Vessel and ASME NQA-1 quality assurance programs.  He is a licensed Professional Engineer in Colorado, Washington, Idaho, Maryland, Pennsylvania, and Tennessee.

Chris Witherell, P.E. has over 20 years of experience in equipment design engineering, design verification, project engineering, and engineering management using ASME NQA-1 quality programs for commercial nuclear power and Department of Energy clients.  He is a Founding Partner of Pressure Safety Inspectors, LLC, (PSI) a Colorado based engineering company that specializes in facility certification to Colorado state rules governing infused products manufacturing and design verification (peer reviews) of solvent based extraction equipment.  PSI currently provides services in Colorado, Washington, Nevada, and Oregon.  He has a Bachelor of Science in Engineering with a mechanical specialty from Colorado School of Mines. He is a licensed Professional Engineer in Colorado, Washington, Nevada, Oregon, and Tennessee. 

Pressure Safety Inspectors, LLC