Science & Technology
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Lead at Superfund Sites: Frequent Questions from Risk Assessors on the Integrated Exposure Uptake Biokinetic (IEUBK) Model
Read frequent questions and answers about lead from risk assessors on the Integrated Exposure Uptake Biokinetic (IEUBK) model.
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Northeastern Pennsylvania Retrospective Case Study Fact Sheet
EPA conducted a retrospective case study in northeastern Pennsylvania to investigate reported instances of contaminated drinking water resources in areas where hydraulic fracturing activities occurred
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Air Issues in Louisiana
Air Programs and Pollution Issues in Louisiana
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How do I report an air quality problem?
Follow this link to report environmental problems . You can also contact your state or local agency with specific concerns. Return to Frequent Questions about AirData
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What you can do to protect coastal wetlands
This webpage describes the decisions in our everyday lives which help preserve coastal wetland area and maintain their ecological integrity. It details the steps you can take to protect wetlands.
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Technical Procedures for Laboratory Services and Applied Science Division Field Quality System
Field Quality System and Technical Procedures
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Assessing And Remediating Low Permeability Geologic Materials Contaminated By Petroleum Hydrocarbons From Leaking Underground Storage Tanks: A Literature Review
Review a literature search focused on effectively remediating leaking UST sites underlain by low permeability geologic materials, specifically unconsolidated silts and clays.
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Questions and Answers about EPA's Hydraulic Fracturing Drinking Water Assessment
Frequent questions and answers about EPA's study o hydraulic fracturing and its potential impact on drinking water resources.
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National Wetlands Condition Assessment 2021 Key Findings
key findings of the national lakes assessment report 2017
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Lead (Pb) Air Quality Standards - Documents Prior to Review Completed in 2008
Documents Prior to Review Completed in 2008
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NIEHS/EPA CEHCs: Denver Children’s Environmental Health Center - Environmental Determinants of Airway Disease in Children - National Jewish Health
This Center is looking into possible causes of asthma and other respiratory diseases which are the most common chronic childhood illnesses.
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SCRAM Mixing Height Data
Mixing Height data are used with surface meteorological upper air data. Upper air data are meteorological data that are measured in the vertical layers of the atmosphere.
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8th Conference on Air Quality Modeling
The 10th Conference on Air Quality Modeling, mandated by Section 320 of the Clean Air Act, held on the EPA RTP Campus from March 13th through 15th, 2012. This is a public hearing on regulatory air quality model and technique development.
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7th Conference on Air Quality Modeling
The 10th Conference on Air Quality Modeling, mandated by Section 320 of the Clean Air Act, held on the EPA RTP Campus from March 13th through 15th, 2012. This is a public hearing on regulatory air quality model and technique development.
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SCRAM Surface Meteorological Archived Data
SCRAM Archived Data (TD-1440) are compressed WBAN Hourly Surface Observations (TD-1440) format data.
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Exposure & Fate Assessment Screening Tool (E-FAST) Version 2.0 Computer-Based Training Introductory Course
The EPA Office of Pollution Prevention and Toxics, Economics, Exposure, and Technology Division has developed several exposure assessment tools and models.
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TSCA Section 5(a)(3)(C) Determination for Premanufacture Number (PMN) P-17-0009
This document describes EPA's pre-manufacture notice review determination under amended TSCA for P-7-0009, a depolymerized waste plastic.
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Dry Starch Powders Modified Teabag Method
The following is a test protocol for a “tea bag analysis” that was conducted on PMN starches by the Corn Refiners Association. This protocol is one approach to providing information on swellability of high molecular weight polymers.
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New Chemical Exposure Limits under TSCA
EPA performs risk assessments and makes a risk management decisions on new chemicals. If EPA determines there to be unresonable risk, EPA may establish a New Chemical Exposure Limit (NCEL) to provide protection.
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High Molecular Weight Polymers in the New Chemicals Program
There are three categories or types of High Molecular Weight (HMW, >10,000 daltons) polymers typically reviewed by the New Chemicals Program: Soluble, insoluble, and water absorbing. Each of the three types are treated differently.