Version 1.12 services will still functionally validate under the v1.10 schema. A Mineral Recovery Brines layer has been added to the 1.12 version. SLDs (Styled Layer Descriptors) can be downloaded from the State Geothermal Data Repository. The Aqueous Chemistry model provides multi-feature web services represented by multiple layers. Thus, there are separate legends, each associated with a layer. Symbols were chosen arbitrarily.

This is a data interchange content model for an observation of the chemical composition of an aqueous fluid. A header content model for sample characterization, location, and analysis metadata is included to assist users finding analyses for specific samples, locations, time intervals, etc. Typically water temperature at the time of sampling is recorded along with sample data. Several 'suites' of analytes representing common analysis results are defined, with the intention that an implementation of the content model would offer several observation feature types, each of which consists of the header fields combined with the analytes for a suite. A content type for reporting results for a single analyte is also proposed, with an abbreviated header; this could be implemented for services similar to the EPA storet data services. In this approach a single analysis result is delivered as a collection of observation records, each with the same AnalysisURI and reporting single analyte. AqueousChemicalAnalysis-BasicData contains fields for information used to discover and retrieve chemical analyses meeting various criteria, and to evaluate the reported results. These fields would be reported along with a collection of analytes from the different suites proposed on the suites table.