Publications
Sample Planning Module (SPM) Data Sheet
September 6, 2008
The EQuIS 5 Professional Sample Planning Module (SPM) provides an automated planning tool for sampling events. SPM eliminates repetitive, manual, error-prone data collection.
Trends in Temperature, Secchi Depth, and Dissolved Oxygen Depletion Rates in the Central Basin of Lake Erie, 1983–2002
January 5, 2006
We examined temperature trends in a 20-year set of monitoring records collected at multiple deep-water stations in the central basin of Lake Erie. Data collected were statistically corrected (“deseasonalized”) to remove biases resulting from irregular sampling intervals within years. Depth-integrated summer temperature has increased by an average (±SE) of 0.037 ±0.01°C per year. An observed reduction of Secchi depth (SD) by 7 ±3 cm/y seems to be unrelated to variation in either total phosphorus (TP) or chlorophyll aconcentrations.
The US EPA Lake Erie indicators monitoring program 1983 – 2002: Trends in phosphorus, silica and chlorophyll a in the central basin
April 5, 2005
During the past 20 years, Lake Erie has exhibited a series of complex chemical changes resulting from changing anthropogenic influences and introductions of exotic species. Since 1990, some apparent trends in nutrient concentrations have been inconsistent with the predictions of models originally used to guide Lake Erie water quality management. We performed time trend analysis on total phosphorus (TP), chlorophyll a Chl a), and dissolved reactive silica (DRS) measurements collected during spring and summer in the central basin of Lake Erie between 1983 and 2001.
Strategies for Managing the Lakes of the Rotorua District, New Zealand
April 5, 2005
The Rotorua district in New Zealand contains 12 nationally important lakes. Environment Bay of Plenty (EBOP), which has the responsibility of managing the quality of these lakes, set a routine monitoring program for these lakes and adopted the method of Burns et al. (1999, 2000) to analyse the data and calculate a numeric Trophic Level Index (TLI) value for each. In 1994, the district community indicated a goal to maintain the present condition for most of the lakes and to improve the remainder. As a result, nu- meric baseline TLI values were written into the Proposed Regional Water and Land Plan as the Rotorua District lake-water quality objectives.
…continue reading Strategies for Managing the Lakes of the Rotorua District, New Zealand
Data Error Reduction by Automation throughout the Data Workflow Process
April 5, 2004
Efforts directed at establishing data quality such as data validation review can be rendered meaningless by errors that occur at other steps in the data management workflow process. Errors in field collection are often miss-entered into spreadsheets, data loaded improperly into the data repository, or uploading data to analytic applications are all prime sources of induced data error that can result in poor decision making by managers. This paper addresses the environmental data workflow process, areas susceptible to error induction, and solutions to these problems.
Application Integration and Better Remediation Decision-Making
April 5, 2003
Electronic management of environmental data continues to become increasingly standard. An integrated data management system provides much more than just the ability to archive data electronically. Companies and government agencies worldwide are reaping the benefits of data management in a relational database integrated with improved analytical tools and enhanced visualization applications. Benefits include being able to manage data more quickly and accurately which, in turn, contributes to better decision-making and response. ESRI’s ArcGIS and EarthSoft’s EQuIS for ArcGIS represent tools in the GIS realm to support scientists in these efforts and are an excellent example of software integration which leverages the value inherent in the data. Case studies illustrate key benefits gained and efficiencies realized by application integration.
Evaluating Cleanup at Hamilton Army Airfield Using EQuIS and ArcGIS
April 5, 2003
The Sacramento District, U.S. Army Corps of Engineers, is implementing EarthSoft’s EQuIS and ArcGIS for better management, analysis, and response to landfill remedial activities being conducted at the former Hamilton Army Airfield. This former Air Force Base is located four miles south of the city of Novato, on San Pablo Bay, in Marin County, California, and is undergoing environmental clean-up a as it is returned to civilian use.
…continue reading Evaluating Cleanup at Hamilton Army Airfield Using EQuIS and ArcGIS
Using EQuIS and ArcGIS for Environmental Decision Support at a Large Oil Refinery
April 5, 2002
Environmental site characterization activities at a large industrial facility can be a complex and costly endeavor. The high volume of data generated from groundwater sampling, soil sampling and other field activities is often difficult to manage. As computer technologies have advanced, new data management and data visualization tools have enabled engineers and geologists to efficiently conduct these site characterization activities. This paper will discuss the use of ArcGIS and EarthSoft’s EQuIS Chemistry and EQuIS Geology databases as tools for the management and visualization of environmental data at a large oil refinery.
URS Delivers EQuIS Support in the Netherlands
February 5, 2000
Effective data management is essential for controlling environmental liabilities and risks, and also forms a critical component of any environmental project. URS provides a wide range of data management solutions, designed to bring added value to a client’s operations/projects by transforming data into the information fundamental to strategic decision-making.
Integrating gINT, EQuIS, and AutoCAD with LagEQ
February 5, 2000
Langan Engineering and Environmental Services, Inc. has developed an application called LANGAN gINT® EQuIS® (LAgEQ)which seamlessly integrates Microsoft® Excel, gINT®, EQuIS® Geology, Microsoft® Access, and AutoCAD® to simplify data input and quickly populate databases and generate professional looking boring logs and fence diagrams.
