Air Quality Services

Vapor Intrusion

ESI conducts vapor intrusion and migration studies in strict compliance with USEPA and NYSDOH guidelines and protocols. ESI has experience in the design and installation of vapor extraction systems for active remediation of both chlorinated and aromatic hydrocarbon contamination as well as the design and installation of subslab depressurization systems for removal of opportunistic contaminants. ESIís experience in this field includes several Sites currently listed on the USEPA National Priority List, the NYSDEC Registry of Inactive Hazardous Waste Sites, and sites in the NYSDEC Brownfield Cleanup Program.


ESI provides professional radon measurement services, which include assessments of interior radon concentrations, as well as assessments of radon in private water supplies. ESI also provides a variety of professional radon mitigation services, including consultation, and design and installation of radon reduction systems. ESI maintains current Radon Measurement and Mitigation Specialist certifications through the National Radon Safety Board (NRSB) and is listed by the New York State Department of Health (NYSDOH) as a Certified Radon Testing and Mitigation Contractor. All radon measurement and mitigation services provided by ESI adhere to established industry standards and regulations.

Air Quality Sampling

ESI employs a variety of air sampling techniques for the purposes of assessing vapor-phase contaminant migration pathways and potentials, and indoor air characterization. Soil vapor, sub-slab vapor, and indoor air sampling data are evaluated to determine potential issues with human exposure to contaminants, and to assist in the selection of appropriate response actions. Sampling and evaluation standards are consistent with those provided in the New York State Department of Healthís ¨ (NYSDOH) Guidance for Evaluating Soil Vapor Intrusion in the State of New York (October 2006).

Particulate Monitoring

ESI provides environmental monitoring services for particulates and VOCs at construction, demolition, and excavation projects. Dust levels are monitored utilizing sensitive aerosol-detecting equipment with real-time display and data-logging capabilities. VOCs are monitored using photo-ionization detectors (PIDs) or other field equipment. Real-time data is reviewed in the field to alert project personnel to conditions of excessive contaminant generation that may indicate the need for dust suppression measures or project modification. ESIís field observations, logged data, and documentation of response actions, if necessary, are presented in a final report to document a projectís compliance with applicable regulations.