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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How Long is a Phase 1 Environmental Assessment Good For?
How Long is a Phase 1 Environmental Assessment Good For? A Phase 1 Environmental Assessment is good for one year in most cases. However, expiration also depends on the purpose of the report, and events that take place on the property. For instance, changing industry standards, new environmental conditions, and the CERCLA statutes of limitations…
Water Table
Water Table Water Table: In the hydrogeology branch of geology, the water table represents the surface of an unconfined groundwater aquifer, where the hydraulic pressure is equal to atmospheric pressure. Additionally, a water table is present in a perched groundwater zone. Although, there is no water table in a confined aquifer.
Dry Strength
Dry Strength “Dry Strength” is a value that represents the strength of a soil sample, when dry, as determined by the crushing test. There is a common geotechnical engineering laboratory procedure for determining the cohesiveness or plasticity of a sample with organic or inorganic clays and silts.
Dry Cleaner Soil Contamination
Dry Cleaner Soil Contamination Dry cleaner soil contamination issues are no mystery to commercial property owners and investors. Even when landlords trust their dry cleaning tenants to run a clean shop, the process remains stressful. For instance, soil contamination cleanup can cost hundreds of thousands of dollars. Additionally, time and development opportunities may be impacted….
Vent Riser in Methane Mitigation
Vent Riser in Methane Mitigation Vent Riser in Methane Mitigation: As per the Los Angeles Department of Building and Safety (LADBS) Methane Code, Ordinance Number 175790, a vent riser is a cast iron or ABS pipe that runs through the building walls (vertically). A vent riser is part of a methane mitigation system and has…
Environmental Engineering & Construction | Indoor Air Quality Protection | Land Development & Real Estate | Methane Mitigation | Remediation & Clean-Up
What is Landfill Methane Gas Testing?
Landfill Methane Gas Testing Landfill methane gas testing is the process by which professional geologists and engineers determine the concentration of landfill gas between soil grains underground. Usually, this is a requirement by environmental regulatory agencies and building departments for the protection of public health. In fact, quarterly landfill gas testing is a common regulation…