Publications

The purpose of this study is to examine the data from the period when samples were analyzed using both DOC methods, so that differences related to changes in methods are made apparent to data users.

View document [PDF] A Comparison of Two Methods of Measuring Dissolved Organic Carbon

The purpose of this study was to produce an interlaboratory comparison involving filtering techniques as well as the results of nutrient analyses among laboratories participating in the Chesapeake Bay Monitoring Program, and was conducted in March 1990.

View document [PDF] Estuarine Nutrient Analyses: A Comparison of Sample Handling Techniques and the Analyses of Carbon,

The purpose of this study is to compare alternative processing and preservation techniques. For the present discussion processing includes filtering, chilling, freezing, and the addition of acid or other chemicals to reduce or stop bacterial transformation of the constituent to be measured in the sample. Since the immediate processing and analysis of samples is rarely possible, scientists, water quality managers, and analysts must determine an appropriate alternative to immediate analysis.

View document [PDF] A Comparison of Preservation Techniques for Dissolved Nutrient Analyses.

The purpose of this study is to determine a whole water sample can be kept under certain conditions before significant changes in nutrient concentration occur.

View document [PDF] Immediate Filtration Processing of Water Samples to Separate Particulate and Dissolved Nutrient Para

The purpose of this study was two-fold: Comparison of the DOC results from different instruments used in the program in order to provide a baseline for comparison of DOC data and historical data if these instruments are replaced; Examination of salinity interference, if any, in of the results.

View document [PDF] Comparison Study of Five Instruments Measuring Dissolved Organic Carbon for the Chesapeake Bay Monit

Beginning with the first Bay cruise in January 1996, DOC data was no longer to be reported; however, AMQAW requested that the DOC data generated since the beginning of the program be scrutinized and that 1.) a factor be found, if possible, to improve the comparability of the data, 2.) the affect of salinity on DOC measurements, in general, be assessed, 3.) a DOC procedure be recommended for future DOC work so that future DOC data will be in closer agreement .

View document [PDF] Dissolved Organic Carbon: Data Variability and Procedural Recommendations Report for AMQAW (Revision

The Community Watershed Assessment Handbook is a simple and straightforward watershed assessment tool that is intended to direct community groups and local governments in conducting a comprehensive environmental assessment. The purpose of the handbook is to outline a basic process for assessing your community?s current and anticipated future watershed conditions. In addition, the manual offers guidance for using the resulting assessment information as a foundation for future watershed management planning.

View document [PDF] Community Watershed Assessment Handbook

GIS activities undertaken at the Chesapeake Bay Program Office follow the directives outlined in the National Geospatial Data Policy (NGDP). The NGDP establishes principles, responsibilities, and requirements for collecting and managing geospatial data used by Federal environmental programs and projects within the jurisdiction of the U.S. Environmental Protection Agency (EPA). This Policy also establishes the requirement of collecting and managing geospatial metadata describing the Agency?s geospatial assets to underscore EPA?s commitment to data sharing, promoting secondary data use, and supporting the National Spatial Data Infrastructure (NSDI). The work completed by the GIS Team follows the guidelines set forth by the Quality Management Plan for the Chesapeake Bay Program Office, the Chesapeake Bay Program Guidance for Data Management , the National Geospatial Data Policy , the draft National Geospatial Data Policy Implementation Guidance, and the Federal Geographic Data Committee Content Standard for Digital Geospatial Metadata. Large projects require development of a comprehensive CBP Data Center Project Plan. The Chesapeake Bay Program Geospatial Data Quality Assurance Project Plan describes the methods and standards for conducting geospatial data analysis projects.

View document [PDF] Geospatial Data Quality Assurance Project Plan

View document [PDF] Socioeconomic Atlas for the Chesapeake Bay Watershed

This paper focuses on the development and application of a relative status measure in the Chesapeake Bay Program (CBP): the basis of its methodology and lessons learned from its use in assessing the condition of water quality and biological parameters tracked in the CBP long term monitoring programs. This status measure has been in use and in the grey literature of the Bay Program analysts for over a decade, but has not been formally published previously.

View document [PDF] Development and Evolution of a Relative Measure of Condition for Assessing the Status of Water Quali