The Effectiveness of Rain Gardens as a Low-Impact Development Strategy for Storm Water Pollution Reduction in Western Washington

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.

Results of a sediment profile and water analyses from Lake Hancza in northeastern Poland

We investigated the sedimentary record of Lake Hancza (northeastern Poland) using a multi-proxy approach, focusing on early to mid-Holocene climatic and environmental changes. AMS 14C dating of terrestrial macrofossils and sedimentation rate estimates from occasional varve thickness measurements were used to establish a chronology. The onset of the Holocene at c. 11600 cal. a BP is marked by the decline of Lateglacial shrub vegetation and a shift from clastic-detrital deposition to an autochthonous sedimentation dominated by biochemical calcite precipitation. Between 10000 and 9000 cal. a BP, a further environmental and climatic improvement is indicated by the spread of deciduous forests, an increase in lake organic matter and a 1.7% rise in the oxygen isotope ratios of both endogenic calcite and ostracod valves. Rising d18O values were probably caused by a combination of hydrological and climatic factors. The persistence of relatively cold and dry climate conditions in northeastern Poland during the first one and a half millennia of the Holocene could be related to a regional eastern European atmospheric circulation pattern. Prevailing anticyclonic circulation linked to a high-pressure cell above the retreating Scandinavian Ice Sheet might have blocked the influence of warm and moist Westerlies and attenuated the early Holocene climatic amelioration in the Lake Hancza region until the final decay of the ice sheet.

Critical review of estimating benefits of air and water pollution control /

Contract no. 68-01-2821.

Application of numerical classification in ecological investigations of water pollution /

Mode of access: Internet.

Loading functions for assessment of water pollution from nonpoint sources /

Item 431-I-12

Truck washing terminal water pollution control /

Mode of access: Internet.

Alternative policies for controlling nonpoint agricultural sources of water pollution /

"EPA-600/5-78-005."

Water pollution series.

Mode of access: Internet.

Intermedia aspects of air and water pollution control,

Prepared for Office of Research and Development, U.S. Environmental Protection Agency under contract 68-01-0729, program element 1H1093.

Proceedings of the State and interstate water pollution control administrators in joint meeting with the Conference of State Sanitary Engineers; a summary.

Mode of access: Internet.

Reorganization plan no. 16 of 1950 : transferring the functions of the General Services Administration relating to assistance to local school districts and water pollution control to the Federal Security Agency : report.

Also in Congressional serial volume 11368.

Observations of barred coastal profiles under the influence of rising water levels, Eastern Lake Michigan, 1967-71 /

"January 1976."