Data and Tools
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Partially Deleted National Priorities List (NPL) Sites - by Partial Deletion Date
View the list of partial deletions at NPL Sites ordered chronologically by Partial Deletion Date.
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Number of NPL Sites of Each Status at the End of Each Fiscal Year
View the number of NPL site sites of each status at the end of each fiscal year.
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Number of NPL Site Actions and Milestones by Fiscal Year
View the number of NPL site actions and milestones by fiscal year.
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NPL Site Totals by Status and Milestone
View updated totals for the number of NPL sites by status and milestone.
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Field Sampling and Measurement Procedures and Procedure Validation
Field Branches Quality System and Technical Procedures
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UV Index Mobile App
This page provides a list of links for downloading various Envirofacts applications and information to your mobile device.
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About the Data
Provides a site map of the database searches and mapping tools contained in Envirofacts. It also provides a brief description of each search and tool.
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Topic Searches
Topic Searches provide more in-depth information about a particular subject area.
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STOrage and RETrieval Web Services Consumption User Guide Version 2.1.8
This document provides a description of the STORET Web Services and an introduction to consuming
STORET Web Services from other applications. -
HAWQS (Hydrologic and Water Quality System)
A water quantity and quality modeling system to evaluate the impacts of management alternatives, pollution control scenarios, and climate change scenarios on the quantity and quality of water at a national scale.
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Cornell Mixing Zone Expert System
This page provides an overview Cornell Mixing Zone Expert System water quality modeling and decision support system designed for environmental impact assessment of mixing zones resulting from wastewater discharge from point sources
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Downloading Storet Data
Downloading STORET Data Instructions
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Rainfall Erosivity Factor Calculator
A calculator for determining if small construction projects can obtain a waiver from NPDES stormwater permitting.
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EPA Nitrogen and Phosphorus Pollution Data Access Tool
Describes NPDAT and what data is available on it.
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Table of Available Cycles in the RAD
Table of Available Cycles in the RAD
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SUMMARIES OF WATER POLLUTION REPORTING CATEGORIES
SUMMARIES
OF WATER POLLUTION REPORTING CATEGORIES -
NHDPlusV1 California Data
NHDPlus Version 1 data for the California vector processing unit.
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System Change Log for STOrage and RETrieval and Water Quality eXchange
This change log details the status of bugs and issues in the STORET/WQX System. Matters of contention that are resolved are listed as completed, while ongoing issues are listed as open.
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Water Finance Clearinghouse
A database of financial assistance sources available to fund a variety of watershed protection projects.
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STOrage and RETrieval Dashboard
This page provides information about and a link to the STORET Warehouse Dashboard