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. iIDFRFile No . S-2008-1 <br /> December 21, 1972 <br /> PAGE TWO <br /> We understand that a package sewage treatment plant is to <br /> be developed and the effluent disposed of in leach lines . <br /> This report contains the following information: <br /> 1 . Results of percolation tests performed <br /> at this site . <br /> 2 . Laboratory test data . <br /> 3 . Information on groundwater conditions . <br /> 4 . Evaluation of the percolation rates . <br /> SITE CONDITIONS <br /> The overall site is presently a walnut orchard approxi- <br /> mately 2600 feet by 2500 feet in plan dimensions and slopes <br /> slightly to the southwest corner . The walnut trees are spaced <br /> approximately 40 feet apart and appeared to be better maintained <br /> on the south portion of the orchard . An easement owned by <br /> the East Bay Municipal Utility District runs diagonally across <br /> the property in a northeasterly direction . <br /> The ground surface is covered with grass south of the <br /> easement and with mustard-greens north of the easement . The <br /> ground surface at the time of our drilling was disced and very <br /> moist to an approximate depth of 1 to 1-1/2 feet . <br /> There are several old buildings in the northeast corner <br /> of the property . <br />