Cliff Swallow Nest Management – Culvert Project

Close-up inspection of an active cliff swallow nest inside a culvert using a handheld mirror to assess eggs, demonstrating Halker’s environmental compliance expertise in migratory bird protection and construction impact mitigation.

Prior to a culvert rehabilitation project, Halker’s environmental team identified the potential for nesting conflicts with cliff swallows—a migratory species protected under the Migratory Bird Treaty Act (MBTA). Although pre-season inspections and removal of inactive mud nests were completed, the swallows returned and quickly rebuilt active nests within the project area.

CABI Monitoring

Aerial map view of the South Platte River corridor showing adjacent roadways, industrial facilities, and park space, supporting Halker’s CABI monitoring services for environmental assessment, infrastructure oversight, and regulatory compliance.

The client required environmental oversight and documentation for a redevelopment project involving significant soil disturbance at a former industrial site. The primary challenge was ensuring that all excavation and materials handling activities complied with applicable environmental and asbestos management regulations.

Bald Eagle Protection

Bald eagle perched in a tree with marked nest locations, illustrating Halker’s wildlife protection services and expertise in environmental compliance, habitat assessments, and federally protected species monitoring.

During bridge maintenance activities, crews discovered an active bald eagle nest containing two eaglets within the federally protected ½-mile buffer zone. The unexpected finding presented immediate regulatory and operational challenges, as continued work could risk disturbance to a protected species and violate wildlife protection laws.

Health and Safety Plan (HASP)

Close-up view of a Health and Safety Plan (HASP) table of contents outlining chemical, physical, biological, and fire hazards, along with safety training, inspections, and PPE requirements, demonstrating Halker’s comprehensive approach to workplace safety documentation and regulatory compliance.

The client required comprehensive environmental compliance and health and safety support for a large transportation infrastructure project that intersected multiple environmental and regulatory concerns. The project involved construction activities in areas with potential wildlife habitats, environmentally sensitive zones, and previously disturbed corridors where hazardous materials could be encountered.

Remedial Investigation & Design

Bridge inspection crew using a hydraulic under-bridge access platform to evaluate structural conditions, demonstrating Halker’s expertise in remedial investigation, structural assessment, and engineering design for critical transportation infrastructure.

Halker and its legacy company, Cascade Environmental, has completed over 200 projects for numerous contractors on a wide variety of highway construction projects around Colorado.

Fugitive Emissions Study

2D piping model with highlighted red lines showing emission pathways between storage tanks, illustrating Halker’s expertise in conducting detailed fugitive emissions studies for regulatory compliance and operational risk reduction.

The client needed to reduce or eliminate fugitive emissions from over 50 existing upstream production facilities in order to meet 40 CFR 60 OOOOa requirements with an aggressive schedule. The fugitive emission sources were both oil and water storage tanks on site.

Remedial Design and Construction Management

Workers in protective suits and high-visibility safety gear collecting contaminated soil and debris at an active excavation site, showcasing Halker’s environmental remediation, site restoration, and construction management expertise for complex cleanup projects.

Engineering, design and construction services associated with the removal of 5,600 yd3 of radiologically-contaminated concrete and asphalt cover and the subsequent characterization of surface soils, subsurface soils and groundwater on a 6 acre site.

Facilities Conversion to Meet Evolving Needs

Midstream facility with interconnected process piping, tanks, and equipment set against a wide-open landscape, highlighting Halker’s expertise in facilities conversion, system upgrades, and engineering solutions tailored to evolving operational needs.

Maybe they were not producing enough oil and gas previously to justify the infrastructure investment, or maybe the wells in the area were located too far away from established processing facilities to make sense for operators.

Regulatory & Environmental Site Review

Aging above-ground storage tanks with visible corrosion, access platforms, and identification signage, illustrating Halker’s regulatory and environmental site review expertise in assessing legacy oil and gas infrastructure for compliance, safety risks, and remediation needs.

Mergers and acquisitions can be challenging for oil and gas firms, due to the sheer number of regulatory and environmental compliance issues surrounding the oil and gas industry.