Environmental and Ecological Consulting Services

We offer direction on tree preservation and root protection before, during, and after construction. Our team of ISA Certified Arborists^® and consulting foresters provide tree preservation services such as: 

• Tree risk assessment reports 
• Tree and tree root protection zone calculations 
• Mapping of critical root zones and trees to correspond with project plans 
• Soil analyses 
• On-site monitoring 
• Tree preservation action plans 
• Plant health care strategies 

Time is money! Avoid unexpected project delays and contact us to ensure the protection of trees and plants during construction.

Tree inventory is more than keeping track of the trees in an area. Through DRG’s proprietary tree inventory management software TreeKeeper®, our team of experts can examine and document tree health, assess the value of individual trees or overall benefits provided by trees in a neighborhood, city, or state, and spot potential safety risks. 

Streamline your tree inventory management with TreeKeeper. Request a demo today!

Planning and managing an urban forestry project can be complicated, but our team can help you achieve your goals.

We offer customized, turn-key solutions to maximize trees resources, including:

• Master plans
• Inventories
• Data collection and analyses
• Invasive species mitigation
• Species selection
• Planting programs
• Maintenance schedules 

We are here to help! Let’s discuss your urban forestry project and how we can help keep the program moving forward together.

An urban tree canopy includes layers of leaves, branches, and stems that cover the ground when viewed from above.

Our experts use high-resolution GIS data to assess a community’s tree canopy for growth modeling, priority tree planting, urban forestry plans, and more.

Not sure where to start with a canopy goal? We are here to find solutions to your urban forestry challenges. Let’s connect.

DRG can help control and eradicate non-native, invasive pests and plants and restore the ecosystem structure and function that may have been damaged by them.

Our experts can help you find the right solution for the most cost-effective treatment through:

• Surveys and assessments
• Control plans
• Herbicide applications
• Mechanical harvesting
• Monitoring and maintenance

Bronze Birch Borer is a common invasive species in Seattle, King County, Pierce County, and Snohomish County that our team has extensive experience with managing.

To effectively and safely manage an infected area, you can rely on DRG’s invasive species management services. Contact us to get started.