top of page


  • Commercial Real Estate Environmental Due Diligence .

  • Phase I Environmental Site Assessments.

  • Environmental Transaction Screens.

  • Residential Home Inspections. 

  • Radon Gas.

CALL OR TEXT: (916) 261-6301

  • Instagram
  • Facebook
  • YouTube
Request a Free Quote

Thanks for submitting!

Phase I Environmental Site Assessment  (Phase I ESA).


This assessment of a property or multiple properties, is an investigation into the current and historical use of the property in order to assess the risk for potential for environmentally hazardous conditions that might be present on the property. The Phase I ESA consists of desktop research and a physical site visit.

Historical Research 

  • Historical Aerial Photography

  • Street (City) Directories

  • Sanborn Fire Insurance Maps

  • Planning / Building Records

  • Topographical Maps

  • Title Information

Regulatory Research

  • Federal Environmental Databases Review

  • State Environmental Databases Review

  • Fire Department, Other Agencies

Physical Characteristics

  • Geology 

  • Hydrogeology

  • Wetlands

  • Groundwater Flow, Depth

Interviews / Document Review

  • Tenants, Owners, Key Manager(s), etc

  • State and Local Regulators

  • Prior Report Review

  • Document Review

Site Inspection / Reconnaissance

  • Chemical Storage and Hazardous Materials (inventory, drums, totes, etc)

  • Evidence of Underground Storage Tanks

  • Above-Ground Storage Tanks

  • Drainage Features

  • Monitoring Wells, Drinking Wells, Septic

  • Landscape, Wetlands, Fill Areas

  • Utilities and Drainage 

  • Anything Suspect Environmental 


Radon Quick-Facts for


Homeowner Maintenance Checklist - Winter

  • Radon is a gas, and it's colorless and odorless. 

  • The problem with radon gas is that it has been determined that long-term exposure may lead to lung cancer.

  • Radon enters the home via soil-gas from underneath the slab. 

  • The only way to know if the home has a radon issues is to test for radon. 

  • Several radon tests are available on the market and included Do-It-Yourself Testing to professional testing. 

  • The radon problem is fixed by installing a radon mitigation system, which used fan and pipe to pull the radon-gas out of the soil and vent above the roof. 

  • Firewood - store at least 20-30 feet from home, but close enough to provide quick access for those cold nights. We advise placing firewood on pallets to ensure good air circulation and prevent mold and mildew growth. A firewood shed is ideal. 

  • Windows - removed screens and install Low-e storm windows to increase comfort while reducing draft and air leaks. 

  • Appliance Valves - we recommend every owner and family member know the location of the main shut-off valve for gas and municipal water service. 

  • Electrical - the winter is always a good time to test the homes GFCI and AFCI devices. 

  • Ice Dams - ice dams are can be destructive to the home. For locations in high snow volume areas, check for ice dam formation in the homes gutter. *Only check when it is safe to do so*.

  • Radon Gas - the winter is always a good time to check for radon gas. Homes with radon intrusion issues normally have the highest radon in the winter when the interior warm air rises quickly and is partially replaced by cold soil-gas (potential radon-laden air) coming in through cracks or openings in the basement slab. 

Photographs of radon mitigation work in Minnesota

bottom of page