Lower Columbia Engineering

PermaCold Engineering is a leading provider of green industrial refrigeration solutions in Portland, Oregon. With expertise in custom-designed engineering and construction, they specialize in utilizing natural refrigerants such as CO2 and ammonia to create energy-efficient and environmentally friendly systems. Committed to sustainability, PermaCold's systems are designed to minimize environmental impact while maximizing energy savings and long-term return on investment. Their comprehensive services include maintenance, repairs, parts, and compliance, ensuring reliable and efficient operation of industrial refrigeration systems.Generated from the website

Founded in 1976, David Evans and Associates is a provider of sustainable design and management solutions for complex transportation, land development, energy and water resources projects. The company is an employee-owned firm that consists of architects, engineers, landscape architects, planners, scientists and surveyors. It offers a range of services, including architectural design, bridge and civil engineering, marine services, real estate acquisition and negotiation services, natural resources management, telecommunications, transit planning and engineering, land development and energy services. David Evans and Associates has consistently ranked among Engineering News Record s top 100 pure design firms. The company employs more than 850 people and maintains offices in Arizona, Colorado, Idaho, Oregon and Washington. David Evans and Associates is based in Portland, Ore.