Environmental Field Services Vapor Intrusion ASTM Vapor Intrusion Standards Expert Soil Vapor Surveys Soil Gas Sampling Near Buildings/Slab Sub-Slab Soil Gas Sampling Dry Cleaner Investigations Indoor Air Sampling Methane Surveys Vapor Intrusion Assessment and Design Soil and Ground Water Direct push sampling Excavation sampling Monitoring well and potable well sampling Remediation Systems O&M Ground Water Treatment System O&M In-Situ Soil Remediation System O&M Air and Water Sampling Regulatory Reporting Process Review and System Troubleshooting Vapor Intrusion Services Vapor intrusion services are critical investigative tools when assessing potential contamination from dry cleaners, gas service stations and other sites using volatile organic compounds and chlorinated hydrocarbons. Viridian conducts soil vapor surveys to assess upward vapor intrusion risk from volatile chemicals Viridian provides active, passive and flux chamber soil vapor surveys using EPA-supported and multi-state guidance methods Viridian has conducted soil vapor surveys in CA, MD, NY, MT, NC, NJ, PA, and VA Viridian has demonstrated soil vapor collection techniques for regulators in USEPA Region II and in CT, MA, NC, NH, NJ, NY, and PA. Remediation System Operations, Maintenance, and Consulting Services Viridian has 20+ years experience in the operation, maintenance and repair of all types of ground water and soil remediation systems We are licensed for Sub Surface Evaluation , UST Closure, and Wastewater Treatment (N-3), and have OSHA 40-hour training Viridian’s technological experience includes: Water treatment systems: Air stripping Biological treatment Filtration systems Chemical injection Oil water separation pH adjustment In situ soil treatment systems: Air sparging Catalytic oxidation Ozone injection Soil Gas Flaring Soil Vapor Extraction Thermal Oxidation In situ soil treatment systems: Air sparging Catalytic oxidation Ozone injection Soil Gas Flaring Soil Vapor Extraction Thermal Oxidation In addition to standard Operation and Maintenance (O&M) services, Viridian offers the following: Discharge Monitoring Report (DMR) preparation Operation and Maintenance (O&M) manual preparation Health and Safety Plan (HASP) System Process Review (SPR) reports Operator training at your facility