By Christine Petersen
In surroundings in danger medical rules, innovations, and methodologies in environmental technology are explored and defined.
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Extra info for Renewing Earth's Waters (Environment at Risk)
Example text
2. Identify categories of pollution. 3. Develop management plans to address any problems that were identified. These plans include a time line for improvement and a list of best management practices (BMPs)—methods that can be used by scientists, businesses, and industries to reduce nonpoint source pollution. The EPA is responsible for approving state NPS reduction plans. Once approved, states are eligible to apply for federal grants to help fund their programs. ” For the first time, states were actively encouraged to look at the collective forces that might be impacting watersheds, so they could treat them holistically rather than dealing with individual point sources.
Due to concerns for human and environmental health, agricultural chemicals are monitored by the EPA under the 1947 Federal Insecticide, Fungicide, and Rodenticide Act. This legislation requires all pesticides, whether made in the United States or imported, to be registered and then reviewed for safety every five years. Nutrients have perhaps been the most harmful to aquatic ecosystems. They enter water from fertilizers—chemicals used to increase the rate of growth in plants—or from animal wastes.
Section 402 of the CWA—more commonly known as the National Pollutant Discharge Elimination System (NPDES)— defines the criteria for obtaining an effluent discharge permit. States can apply for the option to oversee their own permits or 42 Water Quality Monitoring When it’s time to monitor water quality, the following are the physical, chemical, and biological surveys most commonly conducted. Physical • Temperature determines the amount of dissolved oxygen (DO) that water can hold: warmer water holds less DO.