Vapor Intrusion
Vapor Intrusion occurs when harmful soil contamination changes phase from liquid to vapor underground and moves upward through geologic layers and building foundations, accumulating within indoor air.
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Design Methane Concentration
Design Methane Concentration Design Methane Concentration: In accordance with the Los Angeles Department of Building and Safety Methane Code, Ordinance Number 175790, a Design Methane Concentration is the highest recorded concentration of methane soil gas detected during the course of methane testing on a property. The Design Methane Concentration is what defines the level of…
- Environmental Due Diligence | Environmental Engineering & Construction | Land Development & Real Estate
Price of Phase II Environmental Site Assessment & Phase II ESA Cost
Phase II Environmental Site Assessment Cost The price of a Phase II Environmental Site Assessment can vary, depending on the aspects of a property. The Phase II Environmental Site Assessment cost is typically between $5,800 and $12,000 (for a standard commercial lot). Sometimes, Phase 2 ESAs can cost as much as $25,000. Clients seeking the…
Geosyncline
Geosyncline Geosyncline: In geology, a geosyncline is a large-scale indentation in the Earth’s crust that is filled with sediments. A geosyncline forms due to the gradual sinking of the Earth’s crust, causing sediment from adjacent areas to gather inside. An example of a geosyncline is the Appalachian Mountains.
- Building Materials | Environmental Due Diligence | Land Development & Real Estate | Methane Mitigation
10 Things to Know Before Methane Testing in Los Angeles
What to Know Before a Los Angeles Methane Testing Report This post provides readers with 10 important things to consider before ordering a Los Angeles methane testing report. For more information about what methane testing is, please refer to Geo Forward’s “Official Methane Testing and Soil Gas Survey Page.” Updated May 8, 2026. 1) Confirm…
Fault Creep
Fault Creep Fault Creep: Fault creep means slow ground displacement of a strike-slip fault or dip-slip fault, that usually occurs without accompanying earthquakes. Fault creep can derive from tectonic activity, or be the result of excessive petroleum and groundwater pumping.
