Sustainability Coordination and Documentation

Close-up of a project tracking spreadsheet showing safety plans, schedules, meeting minutes, and compliance documentation with corresponding due dates, illustrating organized construction project management and reporting workflows.

The client required sustainability coordination and documentation support for a large-scale infrastructure rehabilitation project that sought to achieve certification under the ENVISION sustainability framework. This nationally recognized standard evaluates infrastructure projects based on environmental, social, and economic performance indicators, requiring detailed documentation and verification of sustainable design, construction, and operational practices.

Semi Annual Landfill Monitoring

Scenic wetland with purple wildflowers, red rock formations, and mountain peaks reflected in calm water, highlighting natural habitats and environmental landscape preservation.

The client required ongoing environmental monitoring and reporting to maintain compliance with state regulations and the site’s long-term environmental management plan. Specifically, the client needed semi-annual evaluations of landfill cover integrity, landfill gas emissions, and groundwater quality to verify that the site remained stable and protective of human health and the environment.

Noise Monitoring

Tripod-mounted sound level meter recording nighttime construction activity with cranes and utility crews, showcasing Halker’s noise monitoring services for environmental compliance and community impact mitigation on infrastructure projects.

The client required nighttime noise monitoring to verify compliance with a municipal Department of Public Health and Environment (DPHE) noise variance during ongoing construction activities for a Municipal Rapid Transit Project. Because the arch installation work was scheduled during nighttime hours (9:00 PM – 7:00 AM), it was essential to ensure that sound levels remained within the permitted thresholds to avoid disruption to nearby residential areas and maintain adherence to DPHE regulations.

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.

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.