Collections and Lists
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PECBO Appendix Introduction: Module Organization
Table of contents for PECBO Module
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Using R to Compute the Area Under the ROC Curve
Script for assessing model fit
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PECBO Appendix
Overview of PECBO Module, using scripts to infer environmental conditions from biological observations, statistically estimating species-environment relationships, methods for inferring environmental conditions, statistical scripts in module.
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Basic Analyses
Use of statistical tests to determine if an observation is outside the normal range of expected values. Details of CART, regression analysis, use of quantile regression analysis, CART in causal analysis, simplifying or pruning resulting trees.
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Interactive Conceptual Diagrams (ICDs) User Guide
The Causal Analysis/Diagnosis Decision Information System, or CADDIS, is a website developed to help scientists and engineers in the Regions, States, and Tribes conduct causal assessments in aquatic systems.
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Oklahoma SIP Approved Statutes as of May 11, 2020 (OKd29)
EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Oklahoma SIP
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Basic Information about the NDWAC
Basic information about the NDWAC including its basic responsibilities, charters, and roster.
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International and Other Federal Government Environmental Radiation Monitoring Networks
Learn more about international, federal and state monitoring networks.
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Safe Drinking Water on Tribal Lands
Information on how EPA works with American Indians and Alaska Natives to help their systems to improve access to safe drinking water on tribal lands.
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Title V Operating Permit Public Petition Deadlines in Region 8
The report linked below lists Proposed Title V Operating Permits submitted to Region 8 and undergoing EPA's 45-day Review, including the start and end dates for EPA's 45-day review period and the start and end dates for the public's 60-day petition period.
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EPA-Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Oklahoma SIP
EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Oklahoma SIP
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EPA-Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Oklahoma SIP
EPA Approved Oklahoma Source-Specific Requirements
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Stationary Refrigeration and Air Conditioning
Resources for HVACR contractors, technicians, equipment owners and other regulated industry to check rules and requirements for managing refrigerant emissions, information on how to become a certified technician, and compliance assistance documents.
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Tribal Science Council: Research and Resources to Support Tribes
EPA-ORD collaborates with Tribes via the Tribal Science Council to understand and address priority science issues. The site provides both EPA and Tribal information and resources, including tools, products, and relevant research of interest to Tribes.
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Agriculture
The EPA Agriculture Resource Directory offers comprehensive, easy-to-understand information about environmental stewardship on farms and ranches; commonsense, flexible approaches that are both environmentally protective and agriculturally sound.
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Frequently Asked Questions about the Base Realignment and Closure (BRAC) Program
General information about the BRAC program, including the number of BRAC sites, the challenges they pose, and their relationship to the National Priorities List.
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Tribal Programs in EPA's Pacific Southwest (Region 9)
EPA’s Pacific Southwest Region (Region 9) serves 148 federally recognized Tribes within Arizona, California and Nevada to assist environmental programs in Indian Country and ensure Tribes have a voice in decisions that affect their land, air and water.
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2025 Southern California Wildfires
On January 7, 2025, a series of catastrophic wildfires developed in Los Angeles County. EPA worked as part of an all-of-government response to these wildfires. We were tasked with removing hazardous materials from nearly 14,000 affected properties.
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WQX Monthly Conference Calls
WQX Meeting Minutes Conference Call
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Land Revitalization
General statement of land revitalization