AFSC/ABL: Exxon Valdez Trustee Hydrocarbon Database

This hydrocarbon database was initiated after the Exxon Valdez oil spill in 1989. The first version was as an RBase database, PWSOIL(Short, Heintz et al. 1996). It migrated to a proprietary structure in 1997, EVTHD (Exxon Valdez Oil Spill Trustee Council Hydrocarbon Database) and contained the collection and hydrocarbon analysis information for environmental samples obtained for the Exxon Valdez National Resource Damage Assessment and Restoration efforts. The data were organized into three matrix types, tissues, sediment, and seawater. The analytical results included concentrations of 63 hydrocarbons, summary statistics for the evaluation of the hydrocarbon sources and laboratory quality control data. Features of the database included identification of replicate samples, presentation of results in dry or wet weight, optional correction for method detection limits (MDL) of the analytes, and easy identification of samples contaminated with Exxon Valdez crude oil. This structure, written in Visual Basic, ceased to function well when Windows operating systems were upgraded to XP and the data were moved to a Microsoft Access format. The 2014 version continues in Access and is described in the included lexicon document. The 2014 version also includes a data analysis tool (Excel Office 2007 or greater) that flags recovery problems, provides method detection limit filtration (MDL), and source oil modeling. The data should not be used without understanding these details. Further instructions are in the lexicon document.

Data and Resources

Additional Info

Field Value
Last Updated December 20, 2019, 20:29
Created December 20, 2019, 20:29
access_constraints ["Access Constraints: There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed. | Use Constraints: User must read and fully comprehend the metadata prior to use. Data should not be used beyond the limits of the source scale. Acknowledgement of NOAA, as the source from which these data were obtained, in any publications and/or other representations of these data is suggested. | Distribution Liability: The user is responsible for the results of any application of this data for other than its intended purpose. No warranty expressed or implied is made regarding the accuracy utility of the data, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with the data."]
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bbox-north-lat 64.8
bbox-south-lat 55.3
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coupled-resource []
dataset-reference-date [{"type": "publication", "value": ""}]
frequency-of-update asNeeded
guid gov.noaa.nmfs.inport:17283
licence ["NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose."]
metadata-date 2019-10-22T00:00:00
metadata-language eng
progress underDevelopment
resource-type dataset
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temporal-extent-begin 1989-03-23