968 resultados para Water--Pollution--Measurement.
Resumo:
Stormwater runoff is a major cause of surface water pollution in western Washington and cost-effective control measures are needed to reduce contamination of receiving waters. This project evaluated the performance efficiency and costs of installing a residential rain garden by inspecting two gardens and testing water quality samples in one. Infiltration through the garden was effective in reducing metals and nutrients as indicated by reductions in copper and nitrate concentrations of 75% and 97%, respectively. The costs were affordable for most homeowners and cost-effective compared to other options. After doing on-site investigations, the storm water manual for the State of Washington was reviewed and eight recommendations were made for improving it.
Resumo:
Contract no. 68-01-2821.
Resumo:
Mode of access: Internet.
Resumo:
Item 431-I-12
Resumo:
Mode of access: Internet.
Resumo:
"EPA-600/5-78-005."
Resumo:
Mode of access: Internet.
Resumo:
Prepared for Office of Research and Development, U.S. Environmental Protection Agency under contract 68-01-0729, program element 1H1093.
Resumo:
Mode of access: Internet.
Resumo:
Also in Congressional serial volume 11368.