Following is a list of freeware that provides information and tools for performing environmental impact analyses. Before you access any software or apps, please read our disclaimer and permissions page if you haven't already done so.

3MRA
By US Environmental Protection Agency, Center for Exposure Assessment Modeling (CEAM). The Multimedia, Multi-pathway, Multi-receptor Exposure and Risk Assessment (3MRA) technology provides the ability to conduct screening-level risk-based assessment of potential human and ecological health risks resulting from long term (chronic) exposure to HWIR chemicals released from land-based waste management units (WMUs) containing currently listed waste streams. The 3MRA system consists of a series of components within a system framework.

AirCasting App
By HabitatMap. AirCasting is an Android app for recording, mapping, and sharing health and environmental data using your smartphone. Each AirCasting session lets you capture real-world measurements, annotate the data to tell your story, and share it via the CrowdMap. AirCasting is an open source project.

AIRNow Mobile App
By US Environmental Protection Agency. The AIRNow mobile application provides real-time air quality information that you can use to protect your health when planning your day. You can get location-specific reports on current air quality and air quality forecasts for both ozone and fine particle pollution (PM2.5). Air quality maps from the AIRNow website provide visual depictions of current and forecast air quality nationwide, and a page on air quality-related health effects explains what actions people can take to protect their health at different AQI levels, such as "code orange." Available for iPhone and Android.

Bioassay Quick Reference Table
By California Department of Toxic Substances Control. This guide is the prototype of a project aimed at creating an index of all the standard bioassays currently being used in the scientific community. Initially includes ASTM standards.

CADDIS Biological Impairment Identification System
By US Environmental Protection Agency. An online tool that helps investigators in the regions, states and tribes find, access, organize, use and share information to produce causal evaluations in aquatic systems.

CALINE4 (California LINE Source Dispersion Model)
By California Department of Transportation. A modeling program to assess air quality impacts near transportation facilities. It is based on the Gaussian diffusion equation and employs a mixing zone concept to characterize pollutant dispersion over the roadway

CalTOX
By California Department of Toxic Substances Control. A spreadsheet model that relates the concentration of a chemical in soil to the risk of an adverse health effect for a person living or working on or near the contaminated soil. CalTOX computes site-specific health-based soil clean-up concentrations given target risk levels or human health risks given soil concentrations at the site.

Canadian Environmental Assessment Registry
By Canadian Environmental Assessment Agency. The Canadian Environmental Assessment Registry contains information about projects undergoing environmental assessment across Canada.

Carbon Footprint Calculator
By Carbon Footprint Ltd. Calculates your carbon footprint for your home and transportation. A carbon footprint is a measure of the impact our activities have on the environment, and in particular climate change. Also includes ways to purchase carbon offsets.

ChemSTEER (Chemical Screening Tool For Exposures & Environmental Releases)
By US Environmental Protection Agency. ChemSTEER estimates occupational inhalation and dermal exposure to a chemical during industrial and commercial manufacturing, processing, and use operations involving the chemical. It also estimates releases of a chemical to air, water, and land that are associated with industrial and commercial manufacturing, processing, and use of the chemical.

Creek Watch App
By IBM Corporation. Creek Watch is an iPhone app that enables you to help monitor the health of your local watershed. Whenever you pass by a waterway, spend a few seconds using the Creek Watch application to snap a picture and report how much water and trash you see. Creek Watch aggregates the data and shares it with water control boards to help them track pollution and manage water resources.

Dietary Exposure Potential Model
By US Environmental Protection Agency, Office of Research and Development, National Exposure Research Laboratory (NERL). Dietary models can be used for identifying the importance of diet relative to other exposure pathways and indicating the potential for high exposure of certain populations. Existing consumption and contaminant residue databases, normally developed for purposes such as nutrition and regulatory monitoring, contain information to characterize dietary intake of environmental chemicals. A model and database system, termed the Dietary Exposure Potential Model (DEPM), correlates extant food information in a format for estimating dietary exposure.

Dioxin Sources Database
By US Environmental Protection Agency, National Center for Environmental Assessment (NCEA). The Database of Sources of Environmental Releases of Dioxin-like Compounds in the United States (US)(EPA/600/C-01/012, March, 2001) was developed by EPA's Office of Research and Development (ORD) to be a repository of certain specific chlorinated dibenzo-p-dioxin/dibenzofuran (CDD/CDF) emissions data from all known sources in the US.

EcoCalculator
By Athena Sustainable Materials Institute. The EcoCalculator offers architects, engineers and others access to instant Life Cycle Assessment (LCA) results for hundreds of common building assemblies. Available in two versions: EcoCalculator for Commercial Assemblies and EcoCalculator for Residential Assemblies.

Ecological Structure Activity Relationships (ECOSAR)
By US Environmental Protection Agency, Office of Pollution Prevention and Toxics (OPPT). Used to estimate the toxicity of chemicals used in industry and discharged into water. The program predicts the toxicity of industrial chemicals to aquatic organisms such as fish, invertebrates, and algae by using Structure Activity Relationships (SARs). The program estimates a chemical's acute (short-term) toxicity and, when available, chronic (long-term or delayed) toxicity.

Ecotox Database
By US Environmental Protection Agency, Office of Solid Waste and Emergency Response. The ECOTOX (ECOTOXicology) database provides single chemical toxicity information for aquatic and terrestrial life. ECOTOX is a useful tool for examining impacts of chemicals on the environment.

EIS Mapper
By US Environmental Protection Agency. This map displays information from EPA’s Environmental Impact Statement (EIS) Database.

EKAT - Environmental Knowledge and Assessment Tool
By M2 Technologies Inc, Kansas State University (KSU) and CABEM Technologies LLC. EKAT is an automated tool to identify, research, and evaluate environmental and safety-related issues for products and systems. [Registration required.]

Electronics Environmental Benefits Calculator (EEBC)
By Center for Clean Products at The University of Tennessee. The Electronics Environmental Benefits Calculator (EEBC) is intended to assist institutional purchasers, including Federal Electronic Challenge (FEC) program participants, in quantifying the benefits of environmentally sound management of electronic equipment. The Calculator estimates the environmental and economic benefits of purchasing EPEAT-registered products, in addition to improvements in equipment operation and end-of-life management practices. Currently this tool is designed to evaluate EPEAT-registered desktop (with a CRT or LCD) and notebook computers.

Environmental Impact Calculator App
By Siemens AG. This iPhone/iPad app allows you to estimate your building’s baseline carbon footprint from purchased electricity, natural gas, and heating oil. In addition, you can measure the impact of energy efficiency improvements on an annual basis or throughout the length of the project term.

EPA Data Finder
By US Environmental Protection Agency. This site is a single place to find a vast selection of EPA data sources, organized into topics such as air and water that are in easily downloadable formats. Data Finder points to data in downloadable formats to speed up environmental research. For each data source, you can see a basic overview, including the geographic scale and other contextual information, then access the data source itself.

Factor Finder
By US Environmental Protection Agency. A searchable database of exposure factors and sociodemographic data for user-defined populations.

FGETS (Food and Gill Exchange of Toxic Substances) (for DOS)
By US Environmental Protection Agency, Center for Exposure Assessment Modeling (CEAM). A FORTRAN simulation model that predicts temporal dynamics of fish whole body concentration (ug chemical/(g live weight fish)) of nonionic, nonmetabolized, organic chemicals that are bioaccumulated from either: (a) water only - the predominant route of exchange during acute exposures, or (b) water and food jointly - characteristic of chronic exposures.

Global Emission Model for Integrated Systems (GEMIS)
By Institute for Applied Ecology e.V.. A life-cycle analysis (LCA) model, LCA database, and cost-emission analysis system. GEMIS evaluates environmental impacts of energy, material and transport systems, i.e. air emissions, greenhouse gases, solid/liquid wastes, and land use. Also GEMIS can determine the economic costs of scenario options. Old version available.

GoodGuide
By GoodGuide, Inc.. Find safe, healthy, green and ethical products based on scientific ratings.

GoodGuide Mobile App
By GoodGuide, Inc.. Find health, environmental, and social performance ratings for over 145,000 food, personal care, and household products — from baby shampoo to bathroom cleaner. The GoodGuide mobile app makes it fast and easy to find safe, healthy, green, and ethical products, instantly delivering the information you need, when you need it most — in a store and on the go. Includes barcode scanning. Available for iPhone and Android.

Health and Environmental Research Online (HERO)
By US Environmental Protection Agency. HERO contains the key studies EPA uses to develop environmental risk assessments for the public. EPA uses risk assessments to characterize the nature and magnitude of health risks to humans and the ecosystem from pollutants and chemicals in the environment. You can browse through the bibliographic references in HERO by topic or assessment, or search for articles by author, title, etc.

HRS Quickscore
By US Environmental Protection Agency, Superfund Program. Created to assist in scoring sites using EPA's Hazard Ranking System (HRS). HRS Quickscore is an electronic set of HRS scoresheets that executes real time site score calculations. It was designed to assist in developing a conceptual site model for Superfund site assessments. This product is intended for use by those individuals who plan and implement Preliminary Assessments (PAs), Site Inspections (SIs), and other data collection efforts according to the HRS rules, as well as those individuals that write and review HRS documentation records.

HRS Toolbox
By US Environmental Protection Agency, Superfund Program. The HRS Toolbox page provides current guidance documents that may be used to determine if a site is a candidate for inclusion on the National Priorities List.

Internet Geographical Exposure Modeling System (IGEMS)
By US Environmental Protection Agency, Office of Pollution Prevention and Toxics (OPPT). IGEMS is a modernization of OPPT's older Graphical Exposure Modeling System and PCGEMS tools. IGEMS brings together in one system several EPA environmental fate and transport models and some of the environmental data needed to run them. IGEMS includes models and data for ambient air, surface water, soil, and ground water, and makes the models much easier to use than their stand-alone counterparts. IGEMS will have graphics and Geographical Information System (GIS) capabilities for displaying environmental modeling results.

InVEST
By The Natural Capital Project. InVEST is a family of tools to map and value the goods and services from nature which are essential for sustaining and fulfilling human life. It enables decision-makers to assess the tradeoffs associated with alternative choices and to identify areas where investment in natural capital can enhance human development and conservation in terrestrial, freshwater, and marine ecosystems.

LeadSpread
By California Department of Toxic Substances Control. Estimates blood lead concentrations resulting from exposure via the following pathways: dietary intake, drinking water, soil and dust ingestion, inhalation, and dermal contact; created to run on Microsoft Excel

Minimum Risk Levels (MRLs) for Hazardous Substances
By US Agency for Toxic Substances and Disease Registry (ATSDR). A list of Minimum Risk Levels (MRLs) of hazardous substances most commonly found at facilities on the CERCLA National Priorities List (NPL). An MRL is an estimate of the daily human exposure to a hazardous substance that is likely to be without appreciable risk of adverse noncancer health effects over a specified duration of exposure.

MMSOILS (for DOS)
By US Environmental Protection Agency, Center for Exposure Assessment Modeling (CEAM). The Multimedia Contaminant Fate, Transport, and Exposure Model (MMSOILS) estimates the human exposure and health risk associated with releases of contamination from hazardous waste sites. The methodology consists of a multimedia model that addresses the transport of a chemical in groundwater, surface water, soil erosion, the atmosphere, and accumulation in the foodchain. The human exposure pathways considered in the methodology include: soil ingestion, air inhalation of volatiles and particulates, dermal contact, ingestion of drinking water, consumption of fish, consumption of plants grown in contaminated soil, and consumption of animals grazing on contaminated pasture.

MULTIMDP (MULTIMED Daughter Process) (for DOS)
By US Environmental Protection Agency, Center for Exposure Assessment Modeling (CEAM). The Multimedia Exposure Assessment Model (MULTIMED) for exposure assessment simulates the movement of contaminants leaching from a waste disposal facility. The MULTIMED model has been modified (MULTIMDP) to simulate the transport and fate of first- and second-generation transformation (daughter) products that migrate from a waste source through the unsaturated and saturated zones to a downgradient receptor well.

MULTIMED 1.01 (for DOS)
By US Environmental Protection Agency, Center for Exposure Assessment Modeling (CEAM). The Multimedia Exposure Assessment Model (MULTIMED) for exposure assessment simulates the movement of contaminants leaching from a waste disposal facility. The model consists of a number of modules which predict concentrations at a receptor due to transport in the subsurface, surface air, or air.

MULTIMED 2.00 Beta (for DOS)
By US Environmental Protection Agency, Center for Exposure Assessment Modeling (CEAM). The Multimedia Exposure Assessment Model (MULTIMED) for exposure assessment simulates the movement of contaminants leaching from a waste disposal facility. The model consists of a number of modules which predict concentrations at a receptor due to transport in the subsurface, surface air, or air.

My Place History App
By ESRI. A tool that links your personal place history to personal environmental experience using several governmental databases, including the Toxic Release Inventory (TRI) of the United States Environmental Protection Agency, and the National Institute of Health's known chemical database. Using U.S. street addresses to create and maintain a personal place history, My Place History allows you to gather general information about the distance (or proximity) to certain specific events, hazards or exposures. For iPhone and iPad.

My Place History Online
By ESRI. Links your personal place history to personal environmental experience using several governmental databases, including the Toxic Release Inventory (TRI) of the United States Environmental Protection Agency, and the National Institute of Health's known chemical database. Using U.S. street addresses to create and maintain a personal place history, My Place History allows you to gather general information about the distance (or proximity) to certain specific events, hazards or exposures.

Paper Calculator
By Environmental Defense. Shows the environmental impacts of different papers across their full lifecycle.

Pesticide Information Profiles (PIPs)
By EXTOXNET. Provides specific pesticide information relating to health and environmental effects.

Preliminary Remediation Goals (PRG) for Radionuclides
By US Environmental Protection Agency, Office of Solid Waste and Emergency Response. Find risk-based PRGs calculated using default input parameters and the latest toxicity values. In addition, you are able to modify the input parameters to create site-specific PRGs to meet the needs of your Superfund site.

Purchasing Impact Estimator (PIE)
By Texas Commission on Environmental Quality and U.S. Environmental Protection Agency. The Purchasing Impact Estimator (PIE) gives an assessment of the degree to which your organization's purchases are having an environmental impact.

Risk-Screening Environmental Indicators (RSEI)
By US Environmental Protection Agency, Office of Pollution Prevention and Toxics (OPPT). This model supports screening-level analysis of risk-related impacts of toxic chemical releases and transfers in the US. It uses data from the Toxics Release Inventory (TRI). RSEI analyzes risk factors including the amount of chemical released, the fate and transport of the chemical, the route and extent of human exposure to the chemical, and the toxicity of the chemical to produce a risk-related numerical score which you can use to compare to other model results.

RMP*Comp (download)
By US Environmental Protection Agency and National Oceanic and Atmospheric Administration. Helps complete the offsite consequence analyses (both worst case scenarios and alternative scenarios) required under the Risk Management Planning Rule, which implements Section 112(r) of the US 1990 Clean Air Act.

RMP*Comp (online)
By US Environmental Protection Agency and National Oceanic and Atmospheric Administration. Helps complete the offsite consequence analyses (both worst case scenarios and alternative scenarios) required under the Risk Management Planning Rule, which implements Section 112(r) of the US 1990 Clean Air Act.

SD Planner
By Global Environmental Management Initiative (GEMI). A self-assessment tool designed to help companies evaluate, plan for and integrate sustainable development into business processes. The tool addresses all three aspects of sustainable development: environmental impact, economic development, and social equity as well as activities that can be undertaken toward achieving those goals. Use of this tool will assist companies in identifying the critical sustainable development issues that are important to business activities.

Soil and Water Assessment Tool (SWAT)
By US Department of Agriculture, Natural Resources Conservation Service. A river basin scale model developed to quantify the impact of land management practices in large, complex watersheds

Soil Screening Guidance for Chemicals
By US Environmental Protection Agency, Office of Solid Waste and Emergency Response. A tool for screening at National Priorities List (NPL) sites.

Superfund Chemical Data Matrix (SCDM)
By US Environmental Protection Agency, Superfund Program. Contains factor values and benchmark values applied when evaluating potential National Priorities List (NPL) sites using the Hazard Ranking System (HRS). Factor values are used for determining the relative threat posed by a hazardous waste site and reflect hazardous substance characteristics, such as toxicity and persistence in the environment, substance mobility, and potential for bioaccumulation. Benchmarks are environment- or health-based substance concentration limits developed by or used in other EPA regulatory programs. SCDM contains HRS factor values and benchmark values for hazardous substances that are frequently found at sites evaluated using the HRS, as well as the physical, chemical, and radiological data used to calculate those values. PDF files.

The Bioterrorism Act of 2002
By US Food and Drug Administration. The events of Sept. 11, 2001, reinforced the need to enhance the security of the United States. Congress responded by passing the Public Health Security and Bioterrorism Preparedness and Response Act of 2002 (the Bioterrorism Act), which President Bush signed into law June 12, 2002.

The Green Gumshoe
By TheGreenGumShoe.com. Environmental Crime Reporter App for iPhone. If you detect a potential evironmental violation in your community, you now have the ability to report it directly to your local government agency.

Toxicology Information Briefs (TIBs)
By EXTOXNET. Short descriptions of a variety of issues that pertain to pesticides such as health and environmental effects.

U.S. Life-Cycle Inventory Database
By National Renewable Energy Laboratory (NREL). This database provides a cradle-to-grave accounting of the energy and material flows into and out of the environment that are associated with producing a material, component, or assembly. It's an online storeroom of data collected on commonly used materials, products, and processes.

Vulnerability Self Assessment Software Tool (VSAT)
By Association of Metropolitan Sewerage Agencies. Provides a system for water and wastewater utilities seeking to analyze their vulnerability to both intentional threats and natural disasters. VSAT organizes data, supports vulnerability analyses, and documents the analyses for potential utility assets including physical plant, employees, knowledge base, information technology, and customers. Includes reference libraries of both potential threats and countermeasures, and provides a method for managing the information generated by security vulnerability assessments.

Vulnerable Zone Indicator System (VZIS)
By US Environmental Protection Agency. Use this site to access the Vulnerable Zone Indicator System (VZIS), and quickly find out if an address in your community could be affected by a chemical accident. Results will be emailed.

WATERSHEDSS
By North Carolina State University (NCSU) Water Quality Group. WATERSHEDSS (WATER, Soil, and Hydro- Environmental Decision Support System) was designed to help watershed managers and land treatment personnel identify their water quality problems and select appropriate best management practices.

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This page last updated on 9/29/16