December, 2010 William Cooter sid@rti
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1 December, 2010 William Cooter [email protected] Options for Publicly Available Drinking Water Indicators that Conform with EPA’s Sensitive Drinking Water Information Policy
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Options for Publicly Available Drinking Water Indicators that Conform with EPA’s Sensitive Drinking Water Information Policy. December, 2010 William Cooter [email protected]. Making Sensitive Information “Non-Sensitive”. Consider Several Alternatives:. - PowerPoint PPT Presentation
Transcript of December, 2010 William Cooter sid@rti
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December, 2010
William Cooter [email protected]
Options for Publicly Available Drinking Water Indicators that Conform with EPA’s Sensitive Drinking Water Information Policy
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Making Sensitive Information “Non-Sensitive”
(1) Develop Indicators for Sensitive Drinking Water Information Based on Suitably Large Polygon Units (HUC12s)
(2) Present Sensitive Drinking Water Information in Terms of Proximity to Non-Sensitive Information
(3) NHDPlus Aquatic Areas of Investigation (Aq-AORs) NEW!
Consider Several Alternatives:
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(1) Develop Indicators for Sensitive Drinking Water Information Based on Suitably Large Polygon Units (e.g., HUC12s)
Surface Water Facility Points within HUC12s
The numbers of surface drinking water facilities (intakes, reservoirs, or springs) were determined for each HUC12 subwatershed.
NOTE: Could also be implemented just presenting the number of drinking water SYSTEMS with source waters within HUC12s
Example for Chesapeake Bay Basin
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(2) Present Sensitive Drinking Water Information in Terms of Proximity to Non-Sensitive Information
Could create a web service to generate proximity information for each RCRA LQG:
Yes – within a SPA or No – not within a SPA
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NEW(3) NHDPlus Aquatic Areas of Investigation (Aq-AORs)
Currently being Implemented for CERCLA 108(b) Hardrock Mining Rule Development
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NHDPlus Aquatic Areas of Investigation (Aq-AORs) for Indicator Development
Is a certain type of information present (Yes or No) within the Aq-AOR?
Proximity analyses could use surface and groundwater SPAs
Could apply a wide range of other cross-program information (much of which is already in the DWMA)
Could be applied for many types of point representations of EPA-regulated facilities
Indicator results can be generate nationally for rule development or status and trends tracking
NHDPlus-based Aq-AOR frameworks can also be applied on a site specific basis for management decisions for specific facilities
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108b Mines/Facilities within Drinking Water Source Protection Areas
(Surface Sources)
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108b Mines/Facilities within Drinking Water Source Protection Areas(Groundwater Sources)
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December, 2010
William Cooter [email protected]
Options for Publicly Available Drinking Water Indicators that Conform with EPA’s Sensitive Drinking Water Information Policy
