Aurora Airport Hangar

6.4 Acres Site Development
2 Aircraft Hangars
1% Max Site Slope

Project Overview

Columbia Engineering Group provided civil engineering for Aurora Airport Hangar in Aurora, Oregon. The project involved development of a 6.4-acre aviation facility supporting two aircraft hangars and a two-story office component.

CEG designed the site to support aviation operations through grading, airfield access improvements, heavy-duty pavement, stormwater management, and full utility coordination. In addition, the project required infrastructure solutions that aligned with long-term operational performance and airfield standards.

Site and Airfield Approach

This project required careful coordination between site development and aviation operations. Therefore, the civil design had to support aircraft access, utility service, drainage performance, and durable pavement within a highly controlled airfield setting.

At the same time, the site grading had to maintain a maximum 1% slope while integrating a complete stormwater system. As a result, CEG developed a coordinated approach that balanced constructability, drainage control, and long-term operational efficiency.

Engineering Scope of Work

CEG delivered civil engineering for the aviation facility from site grading through construction documents and agency coordination. Overall, the scope focused on airfield access, pavement performance, utility service, and controlled stormwater management.

📐 Site Grading and Civil Layout

CEG graded the site to maintain a maximum 1% slope while supporting the hangars, office component, and surrounding aviation infrastructure.

✈️ Airfield Access and Pavement Design

CEG designed airfield access improvements and durable pavement sections for apron and taxiway access areas to accommodate repeated aircraft and ground support equipment loading.

🌧️ Stormwater Management

The stormwater system included conveyance piping, collection structures, detention, and bioswale treatment for controlled discharge across the site.

🔌 Utility Coordination

CEG provided full utility coordination to support the aviation facility, office component, and related site infrastructure.

📋 Construction Documents and Agency Coordination

CEG delivered construction documents and coordinated with Marion County, the Oregon Department of Aviation, and the FAA to support compliance with applicable airfield standards and development requirements.

Project Outcome

Aurora Airport Hangar added coordinated civil infrastructure for a new aviation facility in Aurora, OR. Through site grading, heavy-duty pavement design, stormwater management, utility coordination, and airfield access improvements, CEG helped support a facility designed for reliable aviation operations.

Just as importantly, CEG aligned the project with Marion County, the Oregon Department of Aviation, and the FAA. As a result, the site development supports airfield standards, long-term durability, and operational efficiency across the facility.

What Made This Project Stand Out

✈️
Aviation-Focused Civil Design

The project supported two aircraft hangars and a two-story office component on a 6.4-acre site with infrastructure tailored to aviation use.

✓
Heavy-Duty Airfield Pavement

CEG designed pavement sections for apron and taxiway access areas to accommodate repeated aircraft and ground support equipment loading.

🌧️
Integrated Stormwater Strategy

The civil design combined conveyance piping, collection structures, detention, and bioswale treatment for controlled site discharge.

📋
Airfield Agency Coordination

CEG coordinated with Marion County, the Oregon Department of Aviation, and the FAA to help keep the project aligned with airfield standards and permitting requirements.

Sutton Trucking Regional Distribution Hub

27,000 SF Facility Size
3 Engineering Disciplines
VRF High-Efficiency HVAC

Project Overview

Columbia Engineering Group provided mechanical, electrical, and plumbing design for the Sutton Trucking Regional Distribution Hub in Cowlitz County, Washington. The project included a 27,000 square foot trucking facility with mechanic bays, wash bays, administrative offices, conference rooms, and employee break areas.

CEG designed the MEP systems to support day-to-day operations, long-term maintainability, and energy efficiency. In addition, the project incorporated high-efficiency HVAC, advanced lighting controls, and plumbing systems tailored to wash bay operations.

Facility and Building Systems

This project combined industrial service spaces with office and employee support areas. Therefore, the building systems had to respond to different operating conditions across the facility.

At the same time, Sutton Trucking needed reliable systems that could support year-round comfort and ongoing operations. As a result, CEG coordinated HVAC, electrical, and plumbing systems around both performance and ease of upkeep.

Engineering Scope of Work

CEG delivered a coordinated MEP design for the regional distribution hub. Overall, the scope focused on energy efficiency, system reliability, and practical support for service and office functions.

🌬️ Mechanical

The HVAC design included a high-efficiency VRF system with low-ambient heating for year-round comfort. In addition, CEG designed energy recovery ventilation for office areas and infrared gas tube heaters with emergency exhaust systems in the service garage and wash bays.

⚡ Electrical

The electrical scope incorporated LED lighting with advanced controls, robust power distribution, and fire alarm systems to support both industrial and office operations.

🔧 Plumbing

CEG designed domestic water, sanitary sewer, and a grease interceptor to support wash bay operations and the broader plumbing needs of the facility.

🛠️ Operational Support

The building systems were designed to support mechanic bays, wash bays, office areas, meeting spaces, and employee support spaces within one coordinated facility.

✅ Reliability and Maintainability

All MEP systems were designed for reliability, maintainability, and energy efficiency. As a result, the facility supports smoother operation and easier upkeep over time.

Project Outcome

The Sutton Trucking Regional Distribution Hub brought together industrial service functions and office support spaces within one 27,000 square foot facility. Through coordinated MEP engineering, CEG helped create a building system approach that supports day-to-day operations, energy performance, and long-term reliability.

Just as importantly, CEG tailored the HVAC, electrical, and plumbing systems to the needs of both wash bay and office environments. As a result, the project supports year-round comfort, durable utility infrastructure, and practical long-term maintenance for a regional trucking hub.

What Made This Project Stand Out

🏭
Industrial and Office Integration

The project combined mechanic bays, wash bays, offices, conference rooms, and employee break areas in one coordinated facility.

✓
High-Efficiency HVAC Design

CEG designed a VRF system with low-ambient heating, energy recovery ventilation for offices, and infrared gas tube heaters with emergency exhaust in service areas.

⚡
Robust Electrical Infrastructure

The electrical design included LED lighting with advanced controls, power distribution, and fire alarm systems to support facility operations.

🔧
Wash Bay Plumbing Support

The plumbing design included domestic water, sanitary sewer, and a grease interceptor to support wash bay use and long-term facility function.

Columbia Holdings Building #2

20,000 SF Building Size
1.3 Acres Site Development
6 Engineering Disciplines

Project Overview

Columbia Engineering Group provided civil, structural, mechanical, electrical, plumbing, and fire protection engineering for Columbia Holdings Building #2 in Bush Prairie, Washington. The project included a 20,000 square foot pre-engineered metal building on a 1.3-acre site.

In addition to the building design, CEG supported full site development for the project. That scope included ADA-accessible parking, EV charging, landscape design, and an underground stormwater infiltration gallery. Together, these elements helped support a practical industrial and commercial facility with sustainability-focused features.

Site Development and Permitting

This project required more than building systems design alone. CEG also led entitlement and permitting, which included land use applications, traffic studies, pre-app meetings, utility coordination, and DEQ approvals.

As a result, the project moved forward with coordinated support across both site development and regulatory review. That broader role helped align the building, site, and utility infrastructure from early planning through permitting.

Engineering Scope of Work

CEG delivered a coordinated multidisciplinary scope for the building and site. Overall, the work combined site development, utility infrastructure, fire protection, and core building systems within one integrated design effort.

🏗️ Building Engineering

CEG provided structural, mechanical, electrical, plumbing, and fire protection engineering for the 20,000 square foot pre-engineered metal building.

🌿 Site Development

The site scope included ADA-accessible parking, EV charging, landscape design, and an underground stormwater infiltration gallery.

🔥 Fire Protection Infrastructure

The fire protection scope included a firewater main, hydrants, and FDC infrastructure to support the site and building fire protection needs.

⚡ Sustainability Features

The project included EV charging and landscape and stormwater design elements that supported broader sustainability goals for the site.

📋 Entitlement and Agency Coordination

CEG managed land use applications, traffic studies, pre-app meetings, utility coordination, and DEQ approvals as part of the entitlement and permitting process.

Project Outcome

Columbia Holdings Building #2 combined a new industrial and commercial building with full site development on a 1.3-acre site in Bush Prairie, WA. Through coordinated civil and MEP engineering, CEG helped deliver a project that addressed building systems, site infrastructure, accessibility, and fire protection within one integrated scope.

Just as importantly, CEG led entitlement and permitting for the project. By managing land use, traffic, utility, and DEQ coordination, the team supported a more complete development process from planning through approvals.

What Made This Project Stand Out

🏢
Full Building and Site Coordination

The project combined a 20,000 square foot pre-engineered metal building with full site development on a 1.3-acre property.

✓
Entitlement and Permitting Leadership

CEG led land use applications, traffic studies, pre-app meetings, utility coordination, and DEQ approvals for the project.

🔥
Integrated Fire Protection Infrastructure

The fire protection scope included a firewater main, hydrants, and FDC infrastructure to support the new development.

🌿
Sustainability and Site Features

The site included EV charging, ADA-accessible parking, landscape design, and an underground stormwater infiltration gallery.

SunModo Warehouse Storage and Distribution

35,000 SF Facility Size
2-Story Office Facility
Rooftop PV Renewable Energy

Project Overview

Columbia Engineering Group provided full mechanical, electrical, and plumbing design for the SunModo Warehouse Storage and Distribution project in Vancouver, Washington. The project included a 35,000 square foot tilt-up warehouse and an adjacent two-story office facility designed to support SunModo Company’s operational growth and sustainability initiatives.

To support those goals, CEG designed high-efficiency heat pump-based split HVAC systems, energy-efficient water heating, and EV charging stations for a transitioning electric fleet. In addition, the project incorporated a roof-mounted photovoltaic array to supply renewable energy, reduce utility demand, and support long-term energy resilience.

Facility and Sustainability Goals

This project combined warehouse and office functions within one coordinated development. Therefore, the MEP design had to support day-to-day operations while also aligning with SunModo’s broader sustainability goals.

At the same time, the systems needed to remain practical over the long term. As a result, CEG designed the MEP infrastructure for reliability, maintainability, and energy efficiency so the facility could operate smoothly and remain easier to support over time.

Engineering Scope of Work

CEG provided coordinated MEP design for the new warehouse and office facility. Overall, the scope focused on efficient building performance, renewable energy integration, and long-term operational reliability.

🌬️ Mechanical

The mechanical design included high-efficiency heat pump-based split HVAC systems to support building comfort and energy performance across the warehouse and office areas.

⚡ Electrical

The electrical scope included EV charging stations to support a transitioning electric fleet. In addition, the design integrated a roof-mounted photovoltaic array to provide renewable energy for the facility.

🔧 Plumbing

CEG designed energy-efficient water heating as part of the coordinated plumbing scope for the warehouse and office facility.

☀️ Renewable Energy Integration

The roof-mounted PV array was integrated into the facility to reduce utility demand and support long-term energy resilience.

🛠️ System Reliability and Maintainability

All MEP systems were designed for reliability, maintainability, and energy efficiency. As a result, the project supports smooth operation and ease of upkeep over time.

Project Outcome

The SunModo Warehouse Storage and Distribution project delivered coordinated MEP systems for a warehouse and office facility designed to support both operational growth and sustainability goals.

Through high-efficiency HVAC, energy-efficient water heating, EV charging, and rooftop solar integration, CEG helped create a facility that reduces utility demand while supporting long-term building performance.

Just as importantly, the design emphasized reliability and maintainability. As a result, the project supports smoother day-to-day operation and more practical long-term upkeep.

What Made This Project Stand Out

🏭
Warehouse and Office Integration

The project combined a 35,000 square foot tilt-up warehouse with an adjacent two-story office facility. As a result, the MEP design had to support multiple building functions in one coordinated system.

✓
High-Efficiency Building Systems

CEG designed heat pump-based split HVAC systems and energy-efficient water heating to support long-term performance and energy efficiency.

⚡
EV and Solar Readiness

The facility includes EV charging stations for a transitioning electric fleet and a roof-mounted photovoltaic array for renewable energy generation.

🛠️
Long-Term Maintainability

All MEP systems were designed for reliability, maintainability, and energy efficiency. Therefore, the facility is better positioned for smooth operation over time.

Swire Coca-Cola Power System Study

52-Page Study Report
SKM Modeled System
3-Part Fault, Arc Flash, Coordination

Project Overview

Columbia Engineering Group provided electrical engineering for the Swire Coca-Cola Spokane Distribution Center Expansion Electrical Power System Study in Spokane, Washington.

While another firm designed the power distribution system, CEG completed the power system study. Specifically, the scope covered fault current, arc flash incident energy, and protective device coordination.

To support accurate analysis, CEG modeled the system in SKM. In addition, the team coordinated closely with the Contractor, utility company, and equipment vendor. The model included the exact breakers, fuses, switchboard, panelboards, ATS, generator, transformers, motor contributions, conductors, and raceway.

Study Scope

This project focused on system analysis rather than original design. As a result, the study reviewed system performance, protective device behavior, equipment ratings, and arc flash conditions under multiple scenarios.

⚡ Fault Current Analysis

CEG evaluated fault current levels against the AIC ratings of both proposed and existing equipment. Therefore, the team could identify where the system aligned with available fault current and where further review was needed.

🔥 Arc Flash Analysis

The study included arc flash incident energy analysis. In addition, CEG created arc flash labels for the system.

📈 Protective Device Coordination

CEG developed selectively coordinated time-current curves. The team also recommended settings for each protective device. At the same time, the study evaluated equipment damage curves.

🖥️ Detailed SKM Modeling

The SKM model captured the exact project equipment and system components. Because of that, the analysis reflected the actual proposed and existing configuration more accurately.

📊 Scenario Analysis & Reporting

CEG ran multiple study scenarios and documented the results in a 52-page report. In addition, the report identified several protective device changes and showed the analysis supporting those recommendations.

Project Challenge

Because another firm designed the distribution system, the study required a high level of technical coordination. As a result, CEG worked closely with the Contractor, utility company, and equipment vendor to confirm system components and operating conditions.

At the same time, the study had to address both proposed and existing equipment. Therefore, CEG reviewed equipment ratings, protective device settings, damage curves, and selective coordination together.

Project Outcome

The Swire Coca-Cola Spokane Distribution Center Expansion Electrical Power System Study gave the project team a detailed view of fault current levels, arc flash conditions, and protective device coordination.

By building an exact SKM model, CEG grounded the study in the actual project equipment and layout. In addition, close coordination with project stakeholders helped strengthen the accuracy of the analysis.

The final report did more than document system conditions. It also recommended protective device changes and provided the analysis behind those recommendations. As a result, the study gave the team clearer support for electrical decision-making on the expansion project.

What Made This Project Stand Out

🖥️
Exact SKM System Modeling

The study modeled the actual system components rather than relying on broad assumptions. As a result, the analysis reflected the project more accurately.

✓
Comprehensive Electrical Analysis

CEG combined fault current analysis, arc flash review, and protective device coordination in one study. Therefore, the project team received a more complete view of system performance.

📈
Actionable Recommendations

The final report identified protective device changes and backed them with supporting analysis. In turn, the study provided practical next steps rather than summary findings alone.

🤝
Multi-Party Technical Coordination

The work required close coordination with the Contractor, utility company, and equipment vendor. Because of that, the model better matched the proposed and existing system conditions.