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by Stratigraphy.net
New from Snet: Lithologs, a new tool to create lithological/sedimentological logs online..

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On Site Wastewater Disposal Systems: Soil Considerations

According to the U.S. Census Bureau, as of 1990 there were 24.67 million residences serviced by on-site waste disposal (OSWD) systems, representing 24.1 percent of the total number of households. The highest concentration of OSWD systems is found in the New England states where Maine, New Hampshire, and Vermont have about 50% of their households using them. That number has surely grown, but, unfortunately, 1990 data is the most up-to-date …

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