VIRIDIAN®

Environmental

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Company Vision

Viridian’s creative approach, based on years of experience and insight into all types of environmental concerns, results in innovative, high-quality, cost-effective results.

On-site Mobile Lab

Let the On-Site Mobile Lab support your soil gas and indoor air survey programs with our on-site, real-time analysis of volatile organic compounds (e.g., TCE,PCE), land fill gases and fuel hydrocarbons (e.g., methane, benzene).

Our lab data can support upward vapor intrusion investigation and remediation, site assessments, real estate transactions, ground water investigation and treatment systems, and other areas of concern. The Viridian® Mobile Lab is capable of achieving the low detection limits that meet NY and NJ stringent indoor air levels for VOCs.

NEWS

Case Studies

Harmful Vapors in Foam Insulation

In two instances last year, Viridian® sampled vapors off-gassing from recently installed foam insulation in homes in northern NJ. Lab tests showed volatile organic vapors present, some of which exceeded the NJDEP vapor intrusion screening levels for residential indoor air.

In one case, in a newly renovated, unoccupied dwelling, the owners complained of odors that were offensive and seemed to be the result of insulating foam recently installed. In the second case, in which recently installed foam in an older home appeared to be causing serious breathing conditions, the owners were unable to occupy the home because the air was so bad.

Viridian® sent an experienced staffer to screen the indoor air with a PID, and collect samples of the foam from areas where it appeared discolored or incompletely formed. The samples, in sealed bags, were sent to Centek Lab which analyzed the vapors coming off the foam. In both cases, volatiles, including some harmful chlorinated compounds, were present above the NJDEP Indoor Air screening levels.

Information from the lab, which specializes in analyzing vapors off-gassing from foam insulation, indicates this is not an unusual occurrence.

In both the above instances, Viridian® recommended the owners have the homes re-tested after the insulation was removed and the spaces ventilated. Subsequent IA testing by Viridian® showed the contaminant levels were below a level of concern.