Hirsch Gibney, Inc.
5 services found

Hirsch Gibney, Inc. services

Environmental Site Assessments

In today`s uncertain economic environment, buying or selling real property can be an unmatched investment opportunity or liquidation strategy. As the first step in determining the true value of real property, a quality ESA is prudent to identify liability issues before title is transferred. We have completed hundreds of accurate, timely ESAs on behalf of municipal and urban redevelopment agencies, real estate developers, attorneys, and commercial and residential property owners. Let us use what we have learned from those ESAs to help you make informed decisions about the actual value of a real estate asset and its potential liabilities and property usage challenges.

Soil, Bedrock and Groundwater Investigations

Investigating soil, bedrock , or groundwater quality requires careful, informed planning. and effective implementation so that the data collected is representative of the sampled medium and supports the objectives of the investigation (e.g., define the extent of affected medium; identify the source; plan remedial actions). Our experience includes working in a variety of complicated geologic and hydrogeologic settings such as alluvial fans, bays, river alluvium, lacustrine environments, limestone, gypsum, sandstone, siltstone, mudstone, schists and fractured granite. In those environments, we have demonstrated that we can complete investigations without delays and during the minimum number of trips to the Site, to provide our clients with a documented representation of their properties in less time and without change-orders.

Development of Conceptual Site Models

A useful Conceptual Site Model (CSM) sheds light on the subsurface to promote a dynamic understanding of contaminant release and potential remedial options. The basic tools used to develop a useful CSM are (a) an understanding of the relationship between the physical processes present in the subsurface, the nature of the constituents of concern, and the appropriate methods to assess both in situ, and (b) knowledge of the methods and technologies applied to properly remediate a release. Over time, we have acquired the experience to begin conceptualizing the model using data gathered during an ESA.

Hazardous Waste Management

Before hazardous wastes are encountered at a site, let us help you formulate a plan that will keep your project moving forward. We can work with you to prepare a Materials Management Plan (MMP) that will provide the criteria for assessing if materials are hazardous. The Plan also will guide how hazardous materials are managed if encountered, including procedures to be followed in separating affected materials from unaffected and compositing samples for landfill profiling.

Risk Screens and Risk-Based Corrective Action

Soil and groundwater are `contaminated` when naturally occurring elements (e.g., radon gas, arsenic) or man-made compounds (e.g., solvents, hydrocarbons) have a complete exposure pathway to human or ecological receptors at concentrations that meet the criteria established to cause adverse effects.