Applied Geographic Information Systems

Today’s environmental projects generate an immense flow of data that needs to be managed well in order to become effective. A proper interface tool is needed in order to take advantage of the new information and make it available for the decision-making process. Eon has extensive experience at efficiently applying Geographic Information Systems (GIS) to environmental projects. GIS enables us to streamline all data management and analysis tasks and present pertinent information to our clients. Through effective visualization of modeling and analysis results, you are able to participate in the technical aspects of the decision-making process. Efficiently managed and visualized data also enables you to monitor our progress. Additionally, this data provides for improved QA/QC through cost-effective multiple peer reviews.

Eon professionals possess a wide variety of GIS expertise. Our team members have managed county GIS systems, such as those of Prince William County, Virginia, and Adams County, Pennsylvania. Our personnel developed a method to evaluate the sensitivity of geographic analysis to model and data inaccuracies in the Chesapeake Bay Decision Support System, which enabled methodological inconsistencies to be identified and corrections proposed. A diverse range of government and industrial clients has utilized GIS applications and graphical user interfaces which our staff designed and programmed. For example, at the Kendall oil refinery in Bradford, PA, a GIS interface was developed that enabled scientists to analyze modeling and analysis results, and allowed refinery personnel to participate in the remedial design decisions.

Specialists in Arc/Info, we are also familiar with all other major GIS applications and are on the cutting-edge of vector-based GIS integration with the Internet.

Typical Special Services Projects:

Name of Project: "Site Prioritization Model"
Client: Pennsylvania Power & Light (PP&L), Allentown, PA

In a pioneering agreement with Pennsylvania’s Department of Environmental Protection agency (DEP), PP&L took on the responsibility for evaluating and mitigating, if necessary, their own sites. From a total of 250 sites throughout central and eastern Pennsylvania, DEP required that 30 sites per year be addressed. Pursuant to the agreement, the sites were evaluated for their potential risk to the public, sensitive ecosystems and natural resources. The selected were then assigned cleanup priority’s based on a DEP approved site prioritization model.

In support of the model, our professionals created a 1:24000 scale GIS database for the entire PP&L territory. In addition to planimetric data, the database consisted of such themes as public and private wells, stream classifications, wetlands, endangered species and land use categories. Using various spatial analysis techniques, all requisite data were generated to run the site prioritization model. The programming of several graphical user interfaces and automated mapping routines provided for efficient management and access to the data.

In addition to the original project scope, our professionals assisted PP&L in further populating the database through Global Positioning System (GPS) technology, aerial photographs and existing CAD drawings. This enabled PP&L to leverage their investment for a GIS that was initially designed to satisfy environmental compliance issues, into a functional automated mapping and facilities management tool.


Name of the Project: "Greenwich Collieries"
Client: Pennsylvania Mines Corporation, Barnesboro, PA

Work for the project involved the development of a GIS to support the investigation of acid mine drainage in the vicinity of several underground coal mines. Hard copy maps were scanned and vectorized. Surveyed borings were used to generate sub-surface three dimensional data sets. Seeps and outcrops were mapped using GPS and a variety of other data themes were transposed from existing maps.

Digital elevation models were created for surface topography and subsurface strata. These data were used to successfully interpolate coal seam outcrops, which were mapped, and verified with GPS. A graphical user interface was developed in Arc/Info that enabled scientists to interactively analyze cross-sections of the sub-surface data. Advanced Visualization System software was used to create a true three dimensional data structure that enabled scientists to interactively visualize sub-surface relationships.