The Earth Systems Companies are full service, multidisciplinary firms offering services in the fields of geotechnical engineering, geology, environmental assessment and remediation, and construction materials inspection.

• See also:
• Masterformat 2004
• 02 30 00 - SUBSURFACE INVESTIGATION
• 02 31 00 - Geophysical Investigations
• 02 31 13 - Seismic Investigations
• 02 32 13 - Subsurface Drilling and Sampling
• 02 32 16 - Material Testing
• 02 32 19 - Exploratory Excavations
• 02 32 23 - Geotechnical Monitoring Before Construction
• 31 09 13 - Geotechnical Instrumentation and Monitoring
• Masterformat 1995
• 02210 - Subsurface Investigation