Environmental 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 

Ensure the protection of trees during construction projects with our tree preservation plans, contact us  for more information.

Tree inventory is more than keeping track of the trees in an area. Through DRG’s proprietary 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.  

Request a demo  to see how TreeKeeper can help you efficiently manage your urban forest. 

Our team helps you develop strategies to achieve land management goals and enhance natural areas through our extensive experience assessing natural resources, developing comprehensive restoration plans, performing construction, seeding and planting, and performing long-term maintenance and monitoring. 

We work with a variety of different natural systems, including wetlands, streams and rivers, riparian areas, uplands and prairies, and stormwater management for St. Louis, Springfield, Kansas City, Eastern Kansas, Northern Arkansas, and Central to Southern Illinois areas. 

Start developing a comprehensive environmental design and ecosystem restoration action plan with us, contact us for more information.

We work with municipalities, businesses, and a variety of organizations to manage and protect these vital ecosystems that help filter water and air, control stormwater, conserve energy, and provide animal habitat.

Our urban forestry services include:

• Tree inventories
• Tree preservation and protection
• Urban tree canopy assessments
• Land cover mapping
• Urban forestry management planning
• Urban forestry software
• Public education

Partner with us for a turnkey management plan that outlines long-term solutions that benefit your community forest. Contact us to learn more about our services.

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

A few common invasive species in the St. Louis, Springfield, Kansas City, Eastern Kansas, Northern Arkansas, and Central to Southern Illinois areas include:

• Non-native Honeysuckles
• Tree of Heaven
• Burning Brush
• Callery Pear
• Multiflora Rose

Take control of your natural areas and contact us to get started on your invasive species management plan and discuss your goals.