Science & Technology
-
1,4-Dioxane Scope Document and Supplemental Files
Scope Document and supplemental files for 1,4-dioxane
-
Overview of the Endocrine System
Endocrine systems, also referred to as hormone systems, are found in all mammals, birds, fish, and many other types of living organisms.
-
Impaired Waters and TMDLs in Region 3
An overview of the 303(d) programs in EPA Region 3 (Mid-Atlantic).
-
State Progress Toward Adopting Numeric Nutrient Water Quality Criteria for Nitrogen and Phosphorus
The progress states are making towards the development of numeric criteria for phosphorus and nitrogen pollution.
-
Active-Line Source (ALS) Logging
Borehole Active-Line Source Logging
-
Electromagnetic Methods: Time-Domain
In most time-domain (TDEM) instrumentation, the transmitter current, although still periodic, is a modified symmetrical square wave.
-
Clean Air Status and Trends Network (CASTNET)
The Clean Air Status and Trends Network (CASTNET) is a national air quality monitoring network designed to provide data to assess trends in air quality, atmospheric deposition, and ecological effects due to changes in air pollutant emissions.
-
Planning for Septic Systems
A factsheet about the use of online decentralized systems in Developing Areas.
-
Source Water Protection Practices Bulletin
This fact sheet discusses ways to prevent septic systems from contaminating sources of drinking water.
-
Alert for Recreational Vehicle, Boat and Mobile Home Owners and Park Operators about Safe Wastewater Disposal
Information on safe wastewater disposal for RV, boat and mobile home owners and park operators.
-
The Wastewater Information System Tool Flyer
EPA has developed an off-the-shelf user-friendly management tool formatted in Microsoft Access that features web-style buttons, drop-down boxes for data entry, and intuitive use features.
-
The Wastewater Information System Tool User Guide
TWIST is designed to track information related to the facility served, permits, site evaluations, system types, services provided, and complaints.
-
Physical Habitat
This page introduces the physical habitat module, when to list physical habitat as a candidate cause, ways to measure physical habitat, simple and detailed conceptual diagrams, and module references and literature reviews.
-
datatables test
This interactive resource makes it easy to search all 300+ Data Layers and access their fact sheets.
-
Coral Reefs
Coral reefs are among the most biologically diverse and valuable ecosystems on Earth. This web site describes the importance of coral reefs, threats to them, and ongoing efforts to protect them.
-
Detecting Anthrax, Botulinum Toxin, and Ricin – Immunoassay Test Strips
This assay is listed as Tier I for presumptive analysis of BoNTs in drinking water samples and Tier II for presumptive analysis of BoNTs in other environmental sample types. The lateral flow immunochromatographic assay uses two antibodies in combination to
-
Yersinia pestis [Plague] – BSL-3
This method describes procedures for analysis of clinical samples and may be adapted for assessment of solid, particulate and liquid samples contaminated with Yersinia pestis using a culture method.
-
EPA Method 300.1, Revision 1.0: Determination of Inorganic Anions in Drinking Water by Ion Chromatography
SAM lists this method for preparation and analysis of water samples for fluoride and fluorosilicic acid and analysis of prepared solid and water samples for sodium azide, using ion chromatography.
-
Quality Assurance/Quality Control Guidance for Laboratories Performing PCR Analyses on Environmental Samples
This document is to inform users of proper QC checks during site characterization using real time PCR.
-
Control of Air Pollution from New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards - Supporting Testing, Research and Modeling
This page contains links to some testing, research, and modeling used to inform EPA’s proposed rule, Control of Air Pollution from New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards.