1. Introduction to WQX XML Schema Doug Timms, enfoTech November 28, 2007

2. 11/28/2007 Topics Getting Started Schema Structure Handling of Attachments Other things to look out for

3. 11/28/2007 Helpful Resources 1. Data Exchange Template (WQX_DET_v1.0.xls) 2. XML Schema (WQX_Schema_v1.0.zip) 3. Flow Configuration Document (WQX_FCD_v1.0.zip) 4. Domain Value Database (WQX_ODS_MS_Access.zip) 1,2,3 found at: http://www.exchangenetwork.net/exchanges/water/wqx.htm http://www.exchangenetwork.net/exchanges/water/wqx.htm 4 found at: http://www.epa.gov/storet/wqx_downloads.html http://www.epa.gov/storet/wqx_downloads.html

4. 11/28/2007 Data Exchange Template

5. 11/28/2007 WQX XML Schema File Structure 36 files

6. 11/28/2007 Simplified Data Structure

7. 11/28/2007 Monitoring Location Consists of Following Groups: Monitoring Location Identity Monitoring Location Geospatial Attachments (i.e. Binary Object)

8. 11/28/2007 Activity Consists of Following Groups: Activity Description Activity Location Sample Description Attachments (i.e. Binary Object) Children Results Used to report expanded list of Activity Types (Field Measurement, Quality Control Samples, Dups, Blanks, Vertical Profile, Data Logger, etc…)

9. 11/28/2007 Activity Group Used as a generic method to group related Activities: Field Set: Used to group field activities QC Sample: Used to group activities/samples with related quality control samples Replicate: Used to group samples/measurements of the same type, medium, etc Subsample: Used to group samples with subsamples Completely optional and up to data provider on what level of detail to provide

10. 11/28/2007 Domain Values For any fields that are marked as “Domain List = Yes”, you will need to either: use EPA/WQX’s values in your database Create a mapping table (or procedure) that converts your codes to EPA’s Special Case: ResultAnalyticalMethod Allows either using EPA’s domain values or your own AnalyticalMethodContext: If = EPA predefined value (NIOSH, USEPA, AOAC, etc) Otherwise set =- to your Organization ID Otherwise it will be rejected

11. 11/28/2007 Transaction Handling Submit data either as “Insert/Updates” or “Deletes” Insert/Update: Use WQX_WQX_v1.0.xsd Don’t need to specify insert or update: system will recognize this In order to update a result, must resupply all information for that activity Delete: Use WQX_WQX_Delete_v1.0.xsd Just need to supply Primary Key for the Project, Monitoring Location, Activity, or Activity Group you would like to delete When a component is deleted, all children information is deleted as well Your system should have some capability to understand which data has been updated since your last submission

12. 11/28/2007 Including Attachments Attachments can be tracked at: Project Monitoring Location ActivityResult Store the attachment’s filename (including extension) in XML Therefore each attachment must have a unique filename Include attachments outside of XML, in ZIP file

13. 11/28/2007 Questions