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1 II KI I Iti'H MIR & )( I \1 11, <br />File No. S-2010 <br />January 22, 197 <br />PAGE THREE <br />The rate at which the water percolated into the soil was <br />measured. This process was then repeated. The percolation <br />test data are presented graphically on Plates VI and VII. <br />RECOMMENDED PERCOLATION VALUE <br />The measured rate of percolation from our tests is <br />approximately 2 minutes per inch. Based on the percolation <br />test data, we recommend that an allowable rate of percola- <br />tion of four gallons per square foot per day be used in <br />design of the seepage pits. This value does not include <br />any allowance for possible decrease in rate of percolation <br />due to silting or plugging of the soil pores with time. We <br />would suggest that this possibility be considered in the <br />design of the seepage pits. The percolation capacity of a <br />given seepage pit can be obtained by multiplying the <br />percolation rate by the circumferential area of the seepage <br />pit. <br />LIMITATIONS <br />The statements made in this report are based on the <br />results of our test explorations, percolation tests, and <br />engineering analyses. It is possible that variations in <br />the soils could exist between the points explored. If any <br />soil conditions are encountered during construction which <br />are different from those stated in this report, our firm <br />should be contacted so that we can review the situation <br />