The Phase I Assessment performed to the All Appropriate Inquiry Standard provides the User with certain Landowner Liability Protections. IRWIN follows the newly updated ASTM Standard Practice E1527-21 which conforms to the federal requirements of 40 CFR Part 312. This level of assessment is designed to identify Recognized Environmental Conditions, which, if found, might warrant further investigation. IRWIN has completed hundreds of site assessments in areas such as:

Manufacturing Operations

  • Commodity and specialty chemicals
  • Fiber optics
  • Pharmaceuticals
  • Plastics
  • Petrochemicals
  • Electronics & electrical components
  • Metal fabrication & finishing
  • Wire & cable
  • Detergents & soaps
  • Food & beverage
  • Aluminum mills & steel foundries

Commercial Operations

  • Dry-cleaning
  • Printing & publishing
  • Vehicle maintenance operations
  • Photo processing
  • Office buildings
  • Airports
  • Warehousing & distribution
  • Multi-family residential complexes


  • Abandoned or unused land