Kandel, C.M., Rapp, J.L., and Barber, L.B., 2019, Shenandoah River Accumulated Wastewater Ratio (ver. 2.0, February 2019): U.S. Geological Survey data release, https://doi.org/10.5066/F7RF5S8X.
Summary
Incedental wastewater reuse from streams that receive discharges from Wastewater Treatment Facilities (WWTF) has the potential to be a significant contributor of Endocrine Disrupting Chemicals. An ArcGIS model of WWTFs, NHDPlus Version 2 stream networks (USGS and EPA 2012), and gage stations across the Shenandoah River watershed was created to calculate accumulated wastewater in percent of streamflow (ACCWW%) and Predicted Environmental Concentrations (PECs) of select constituents. Virginia and West Virginia Pollutant Discharge Elimination System (VPDES, WVPDES) discharge facilities, outfall locations, and stream gages were spatially joined to the nearest river segment. Wastewater inputs from outfall locations were summarized by river [...]
Summary
Incedental wastewater reuse from streams that receive discharges from Wastewater Treatment Facilities (WWTF) has the potential to be a significant contributor of Endocrine Disrupting Chemicals. An ArcGIS model of WWTFs, NHDPlus Version 2 stream networks (USGS and EPA 2012), and gage stations across the Shenandoah River watershed was created to calculate accumulated wastewater in percent of streamflow (ACCWW%) and Predicted Environmental Concentrations (PECs) of select constituents. Virginia and West Virginia Pollutant Discharge Elimination System (VPDES, WVPDES) discharge facilities, outfall locations, and stream gages were spatially joined to the nearest river segment. Wastewater inputs from outfall locations were summarized by river segment COMIDs (Common identifier). All wastewater discharge facility locations were verified with United States Environmental Protection Agency (EPA) Facility Registry Service. WWTFs were categorized as industrial or municipal based on the type of permit they were granted. Accumulated wastewater, ACCWW% and PECs were calculated using a python script. Maximum facility-capacity permitted wastewater discharge and 2015 average-annual wastewater discharge were used to calculate ACCWW% for mean-annual and mean-August streamflow conditions. PECs were only calculated for mean-annual streamflow and 2015 average-annual municipal discharges.
Click on title to download individual files attached to this item.
Shenandoah_AccWW_FGDC02252019.xml “metadata document describing the accumulated wastewater calculations” Original FGDC Metadata
View
30.19 KB
application/fgdc+xml
ShenandoahDefacto_BrowseGraphic.png “Browse Graphic for display on Landing Page”
288.54 KB
image/png
ShenandoahACCWW_Tables&metadata.zip “Shenandoah Accumulated Wastewater data and WWTF .csv Tables w/ metadata”
96.42 KB
application/zip
Shenandoah_ACCWW_WWTF_V2_gdb.zip “Shenandoah Accumulated Wastewater data and WWTF geodatabase w/ metadata”
2.54 MB
application/zip
VersionHistory_ShenandoahRiver_AccWW.txt “readme document about the changes in version 2.0”
1.79 KB
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Material Request Instructions
Instructions for obtaining previous versions:
The previous version (1.0) will be available upon request of the Virginia and West Virginia Water Science Center, Richmond Virginia office. 804-261-2600, Jennifer Rapp Jrapp@usgs.gov or Chintamani Kandel ckandel@usgs.gov.
Purpose
Calculate accumulated wastewater and accumulated wastewater in percent (ACCWW %) and Predicted Environmental Concentrations (PECs) in the Shenandoah River watershed to visualize wastewater percentage and constituent concentrations in river segments. The result provides a screening-level view of river segments that receive treated or engineered water which may contain Endocrine Disrupting Chemicals that are not EPA regulated, but pass through the treatment process of permitted wastewater facilities.