Now showing items 21-30 of 135
(United States Environmental Protection Agency, 1997-09)
No abstract available.
Rapid Bioassessment Protocols for Use in Wadeable Streams and Rivers: Periphyton, Benthic Macroinvertebrates, and Fish
(United States Environmental Protection Agency, 1999-07)
In December 1986, U.S. EPA's Assistant Administrator for Water initiated a major study of the Agency's surface water monitoring activities. The resulting report, entitled "Surface Water Monitoring: A Framework for Change" ...
Proceedings of the U.S. Environmental Protection Agency's National Technical Workshop "PCBs in Fish Tissue"
(United States Environmental Protection Agency, 1993-09)
This document summarizes the proceedings of the workshop. The workshop was divided into four main parts: Part One - Introduction to PCBs; Part Two - PCB Toxicity and Health Effects; Part Three - Analytical Methods; Part ...
Wetlands and 401 Certification: Opportunities and Guidelines for States and Eligible Indian Tribes
(United States Environmental Protection Agency, 1989-04)
This document examines the Section 401 State water quality certification process and how it applies to wetlands.
Cases in Water Conservation: How Efficiency Programs Help Water Utilities Save Water and Avoid Costs
(United States Environmental Protection Agency, 2002-07)
Water utilities across the United States and elsewhere in North America are saving substantial amounts of water through strategic water-efficiency programs. These savings often translate into capital and operating savings, ...
Aquatox for Windows - A Modular Fate and Effects Model for Aquatic Ecosystems Release 1.1 - Volume 3: Model Varification Reports Addendum
(United States Environmental Protection Agency, 2001-11)
The ecosystem model AQUATOX is one of the few general ecological risk models that represents the combined environmental fate and effects of toxic chemicals. The model also represents conventional pollutants, such as nutrients ...
Measuring Progress of Estuary Programs: A Manual
(United States Environmental Protection Agency, 1994-11)
This manual is intended to help managers in the National Estuary Program to assess environmental progress and communicate to citizens about efforts undertaken and successes achieved. An informed and involved citizenry is ...
Economic Analysis of Proposed Effluent Limitations Guidelines and Standards for Synthetic-Based Drilling Fluids and other Non-Aqueous Drilling Fluids in the Oil and Gas Extraction Point Source Category
(United States Environmental Protection Agency, 1999-02)
This report is divided into seven sections. Following this introduction, Section Two presents sources of data, Section Three presents the industry profile, Section Four discusses the regulatory costs of options under ...
National BEACH Conference: Report on Action Items - October 15-16, 1997
(United States Environmental Protection Agency, 1998-03)
The purpose of this report is to present a list of potential "action items" related to beach health. The U.S. Environmental Protection Agency (EPA) and the Association of State and Territorial Health Officials (ASTHO) ...
National Beach Guidance and Performance Criteria for Recreation Waters - DRAFT
(United States Environmental Protection Agency, 2001-07)
Coastal and shoreline development, wastewater collection and treatment facilities, septic tanks, animal feeding operations, urban runoff, disposal of human waste from boats, and bathers themselves all contribute to fecal ...