Science & Technology
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PLUMES2.0
PLUMES 2.0 model system, a Windows-based software application for simulating surface water jets and plumes.
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Bioassessment and Biocriteria Program Status for Maryland: Streams and Wadeable Rivers
Biocriteria Program Status of Alabama
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BASINS User Information and Guidance
This page provides links to guidance on how to use BASINS, including the User’s Manual, tutorials and training, technical notes, case studies, and publications that highlight the use of BASINS in various watershed analyses.
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BASINS Download and Installation
The current version of BASINS 4.5 was released in 2019. This page describes the installation requirements for BASINS 4.5.
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AQS User Registration
AQS User Registration
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Sulfur Dioxide (SO2) Primary Standards - Integrated Science Assessments from Current Review
Scientific and technical Integrated Science Assessments used to develop a new sulfur dioxide national ambient air quality standard.
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Background on HFC Reclamation and Destruction
Hydrofluorocarbons (HFCs) are potent greenhouse gases (GHGs) developed and manufactured as replacements for ozone-depleting substances (ODS).
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Port Emission Inventory Guidance – Public Webinar
Overview of latest methodologies and models for planning and scoping port-related inventories to quantify air emissions from mobile sources such as ocean vessels, cargo handling equipment, onroad vehicles, and rail for regulatory or research purposes.
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Support Files for Nonroad Compression-Ignition (NRCI) Certification in the Engines and Vehicles Compliance Information System (EV-CIS)
Use these files for the NRCI module in EV-CIS.
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Manufacturer Information Module
Redesigned Manufacturer Information Module to improve industry user experience, ensure information is accurate and complete; includes introduction, redesign objectives, mockups and features of interface screens and preparation before production deployment.
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Presentation on the Transition Program for Equipment Manufacturers (TPEM)
This presentation provides information about TPEM.
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Certification Materials for Large Nonroad Spark-Ignition (NRSI) Engines/Equipment
Use this template for large SI certification in EV-CIS.
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National Coastal Condition Reports
The National Coastal Condition Reports, prepared by EPA's Office of Research and Development, describe the ecological and environmental conditions in U.S. coastal waters.
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Using Predictive Methods to Assess Exposure and Fate under TSCA
OPPT's tools and approaches for assessing chemicals environmental fate, exposures, and releases are used to characterize the pathways and concentrations of exposures to humans and the environment.
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TSCA Section 402(c) Lead Exposure Reduction Stakeholder Meeting for the Proposed Renovation and Remodeling Rule
Transcript of a roundtable discussion with stakeholders regarding EPA's proposed renovation and remodeling rule, Rosslyn, Virginia, Monday, December 7, 1998.
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Draft Hazard Assessment For CASAC Consultation Meeting, February 5, 2007
This document updates the 1986 AQCD for Lead, associated Addendum, and the 1990 Supplement.
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EPA Requests Nominations for the Science Advisory Committee on Chemicals
EPA is is calling for nominations of prospective candidates to serve on its Science Advisory Committee on Chemicals (SACC) established under the Toxic Substances Control Act (TSCA). There are 18 SACC members, with 8 membership terms expiring in 2024.
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Urban Runoff: Miscellaneous Model Ordinances
The "Miscellaneous Ordinances" section captures ordinances that are important for protection of water resources but do not fall into the other categories of this site.
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Urban Runoff: Model Ordinances for Erosion and Sediment Control
The model ordinance in this section borrows language from the erosion and sediment control ordinance features that might help prevent erosion and sedimentation and protect natural resources more fully.
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Nonpoint Source Monitoring: TechNOTES
A collection of water quality monitoring resources for nonpoint source water quality monitor planning and data analysis.