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Client: Jenkins Poultry Farms QCI# G-94-841 <br /> Project: Mello Road Ranch Page 3 <br /> The third objective of this project was providing protection <br /> measures of the underlying groundwater. On October 20, 1993 , the <br /> static water level was measured in an on-site well at 38 feet below <br /> grade . This measurement corresponds to "Lines of Equal Depth" maps <br /> published by San Joaquin County. Both ponds are a maximum depth of <br /> eight feet below grade. Therefore, adequate distance exists <br /> between the bottom of the lagoons and the highest anticipated depth <br /> to groundwater. However, protection measures were implemented to <br /> limit lagoon seepage and potential impact of the groundwater. <br /> HYDROMETER TESTING <br /> After final construction of the lagoons, an assessment was made of <br /> the soil structure of the bottoms and embankments in accordance <br /> with ASTM D2488 Pgggrigg 999 12 riptign Identif ' on g <br /> Soils (Vig]Aa1-L4ga11a1 RKgggdurp The soil structure is quite <br /> diverse and varied throughout both lagoons . Preliminary hydrometer <br /> testing of the various structures indicated some areas of the <br /> lagoons possessed greater than 10% clay content, while other areas <br /> were deficient in clay. Both lagoons had less than 10% gravel <br /> content from the retrieved samples . Sand is the predominate soil <br /> type for both lagoons, and although there were some areas that <br /> contained a sufficient percentage of clay particles, the porosity <br /> or permeability of the lagoons was high. Therefore, the correction <br /> measure of importing clay to decrease permeability and subsequent <br /> seepage was done. It should be noted that the addition of manure <br /> should also theoretically decrease porosity and therefore, <br /> permeability. The following calculations demonstrate the amount of <br /> clay which was incorporated into the two lagoons : <br /> The bottoms and embankments of each lagoon consist of a total of <br /> approximately 9, 900 cu ft of soil . The weight of soil is <br /> approximately 2, 500, 000 lbs/Ac furrow slice. Therefore, there is <br /> 567, 500 lbs of soil in the top six inch layer of each lagoon. Both <br /> 11111f Conlr(4 <br />