Lakewood, Colo.-based civil and structural engineering firm Martin/Martin Inc. has promoted two associates to principal. Firm principal Jerry May is a water/wastewater expert who joined Martin/Martin in 2012. May has extensive experience in the planning, design, construction, monitoring and operations of water, wastewater, solid waste and environmental systems. He also has federal, municipal, Native American tribal and special district experience in Colorado and New Mexico.

Principal André Schlappe has been with Martin/Martin for 16 years. Schlappe provides design services for projects in the medical, indus- trial, federal, corporate campus, office, mixed-use and higher education markets. In addition, Schlappe is a lieutenant colonel with the U.S. Army Reserve Corps of Engineers, in which he has served since 1995.

Eric Stratford has been promoted to director of business development for R&O Construction in Ogden, Utah. Stratford has been with R&O for 10 years, starting as a project engineer, then an estimator and for the past six years as a key member of the business development team. He graduated from Weber State University with a bachelor's degree in construction management and also holds a LEED associate's designation.

Boulder-based engineering firm JVA Inc. has promoted Joel Price to infrastructure director. Price has more than 15 years of experience in civil engineering, including public infrastructure master planning and design related to water, wastewater pipelines and streetscape improvements.

Two construction leaders recently joined GE Johnson Construction, Denver and Colorado Springs. Kenny Dearth has spent the better part of three decades in the construction industry. He joins GE Johnson as a superintendent specializing in green-building principles and has extensive experience in high-performance buildings, including LEED Platinum certification.

George Kettlewell comes to the firm with more than 33 years in electrical contracting and will work as a superintendent. Kettlewell made his mark on the industry as a leader with Denver's Encore Electric, and before that, with Riviera Electric. He has worked as a superintendent, operations manager and director of field resources.

Jim Neenan has been named president and chief operating officer of Denver-based Prime West Cos., a large development and property management firm. Steve Clarke will remain CEO of the firm. Neenan has been senior vice president-development at Prime West Development since joining the company in 2012. He was previously owner and president of Gardner Signs Inc. in Fort Collins until 2010, and before that, the president of Fort Collins-based developer and contractor The Neenan Co., founded by his cousin David Neenan.