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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Environmental Due Diligence | Environmental Engineering & Construction | Land Development & Real Estate
Reporting the Results of Environmental Due Diligence Investigation
Reporting Results of Environmental Due Diligence Investigation “Are there requirements for reporting results of an Environmental Due Diligence Investigation to the government?” Each case is different. The answer is generally “no,” because ESA reports are typically proprietary. However, if there is any trace of danger or impact on the public’s health or well-being (in any…
Re-Do Methane Testing: Can You Retest Methane Test of Soil?
Can You Retest a Methane Test of Soil? Is it worthwhile to get a retest methane test of soil: Generally Not. Sometimes a methane test will show high results of the hazardous soil gas on a property. And developers will try a retest methane test to get “favorable results.” Regardless, there is a general legal…
Well Log
Well Log (Boring Log) Well Log: A geological well log (or boring log) is a detailed record of subsurface materials encountered during a drilling project. Boring logs, or well logs, are written by a geologist, and describe the physical subsurface characteristics and lithological units encountered during well-plotting. Well logs include information about depth, different formations,…
What is the Underground Storage Tank Abandonment Process
Understanding the Underground Storage Tank Abandonment Process The underground storage tank abandonment process is a complex series of construction and demolition tasks that require intensive environmental regulation and oversight. An underground storage tank, or “UST,” is a large vessel, usually comprising steel or fiberglass, that serves to hold large volumes of liquid. These tanks typically…
Metamorphic Rock
Metamorphic Rock Definition In the field of geology, the term “Metamorphic Rock” refers to a rock classification that is the result of the alteration of prior existing sedimentary rocks or igneous rocks. The alteration process is “metamorphosis, and can take place by various methods and environments. The metamorphosis process produces specific metamorphic rocks, on the…
Passive Methane Mitigation
Passive Methane Mitigation Passive Methane Mitigation: Passive systems refer to the non-mechanical and non-electric components of the methane mitigation process. These components remove the vapor intrusion risks of methane soil gas migration into buildings atop Los Angeles Methane Zones and Methane Buffer Zones. In fact, methane testing results typically indicate the necessity for a passive…