Enviro-Sciences provides site assessment services to investigate, delineate, monitor, and model the location, extent, and migration of contaminated media. These services are often provided subsequent to an ESI site audit or Phase I Assessment to provide continuity of services, be timely and efficient, maintain strategic focus, and control costs. These projects include:

• Phase I Environmental Site Assessments
• Environmental Transaction Screens
• Environmental Database Evaluations
• Record Search Risk Assessments
• Soil and Groundwater Investigations
• Phase II Investigations
• Contaminant Delineation
• Groundwater Monitoring & Modeling
Site Assessment Services Include:

ESI has performed countless soil and groundwater investigations to identify areas of contamination and to determine the contaminants of concern and the severity and extent of the contamination. ESI uses a variety of methods including manual sampling, soil boring with various types of drilling equipment, and well installation. Sample collection, sample handling, record keeping, and data generation are all performed with strict adherence to all applicable protocols, procedures, and guidelines.

ESI has designed and implemented hundreds of Phase II investigations to quantify environmental liabilities associated with ongoing manufacturing operations, inactive sites, and sites proposed for acquisition and/or divestiture. Phase II investigations are often performed subsequent to an ESI Phase I to provide continuity of service. Remediation services (Phase III) are also offered to complete a turnkey project.

ESI uses the results of soil and groundwater investigations to delineate the extent and severity of contamination. Delineation data is used in conjunction with other key variables such as soil types and strata, depth to water, and groundwater characteristics, and cleanup criteria to develop conceptual remediation plans.

ESI designs groundwater-monitoring programs to meet clients’ needs while also satisfying regulatory requirements. Monitoring well locations are selected based on a review of site topography, the locations of areas of concern, and other relevant information. Strategic placement of wells provides information on contaminant distribution and contaminant migration, while also minimizing the number of wells to be installed and sampled, and with potential remedial strategies in mind.

ESI performs groundwater modeling to predict trends in groundwater flow direction and to reflect interactions between groundwater recovery wells, multiple aquifer systems, and bodies of surface water. ESI uses finite-difference and finite-element numerical models as well as numerous analytical models to predict contaminant migration and degradation at any point in the future.