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f {= Depth to high water table: Depth to high water table is the highest average depth from the soil surface to the zone of saturation during the wettest period of the year. This saturated zone must be more than 6 inches thick and persist for more than a few weeks.. A shallow depth to-hi h water table p g may not allow for i sufficient filtration or retention of agricultural wastes or agricultural waste mineralization by- products. A high water table at a depth of less than 4 feet can limit plant and root growth and reduce the soil's agricultural waste adsorptive capacity. Limitations for application of agricultural wastes are slight if the water table is at a depth of more * f than 4 feet, moderate at a depth of 2 to 4 feet, and severe if it is at a depth of less than 2 feet. ' Depth and type of water table, time of year, and duration data should be collected if agricultural wastes are to be applied to soils suspected of having a water table within 4 feet of the soil surface. i The depth to high water table for the site soils is greater than 5 ft. and it can be concluded that the limitations for application of agricultural waste are slight. 4 r � Flooding I Flooding is the temporary covering of the soil surface by flowing water. Ponded and standing water or flowing water during and shortly after rain or snowmelt are not considered flooding. i Flooding events transport surface-applied agricultural wastes off the application site or field and deposit these materials in streams, rivers, lakes, and other surface water bodies. F Soils that have none or rare flooding potential (5 times or less in 100 years) have slight limitations for the application of agricultural waste. Occasional flooding (5 to 50 times in 100 years) is a moderate limitation for the application of agricultural waste, and frequent flooding (50 to 100 times .. in 100 years) is a severe limitation. �y According to the MRCS tables, all site soils have rare flooding potential. € y< Incorporating agricultural wastes and applying wastes when the probability of flooding is low j reduces the hazard to surface water, i Fraction _greater than 3 inches in diameter—Rock –fragments, stones and boulders i Rock fragments, stones, and boulders are the soil fractions greater than 3 inches and are .l measured as a weight percent or estimated as a volume percentage of the whole soil. The upper size limit is undefined, but for practical purposes is about 40 inches. Stoniness is a soil surface feature that is defined as the percent of stones and boulders (rock fragments greater than 10 inches in diameter) that cover the soil surface. It is represented as classes 1 through 6. Refer to page 22 for Endnotes and Reference Sources Western Dairy Design Associates,Inc.2003 Page 13