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[41 Continued. <br /> The exploratory Log of Boring performed on the Designated Remainder illustrates the soil structure <br /> under the testing area is composed of silty sands and fine sand. The Log of Boring follows the <br /> percolation test data. <br /> The percolation tests conducted by Quality Control Inspection, Inc. were performed in accordance <br /> with San Joaquin Environmental Health Department regulations and can be found in the Appendix. <br /> The percolation test was performed in the area of the proposed leachfield. However, a percolation <br /> test was not conducted on the Designated Remainder since a test had already been performed on this <br /> acreage (See DeGroot, MS-92-168, QCI # E-92-671, November 2, 1992). The test results for the <br /> DeGroot project are attached. A deep percolation test was not performed on the subject parcel due <br /> to the favorable percolation strata found at the shallow depth. The shallow perc test (42 in) <br /> performed on the subject parcel was calculated to be 5 minutes per inch. <br /> The soil type encountered during the drilling of the perc boring was a silty-sand and fine sand <br /> formation. This predominate sandy soil structure produces a relatively fast percolation rate for <br /> sewage effluent as evidenced by the above percolation rate. In addition, the almond trees growing <br /> on the subject property are vigorous and producing well, which is an indication of a well-drained soil. <br /> [51 LOCAL GROUNDWATER INFORMATION <br /> The 1993 "Lines of Equal Depth of Water in Wells" map produced by the San Joaquin County <br /> Flood Control and Water Conservation District indicates that the static water level is located at <br /> approximately 40 feet in the area of the subject parcel. The exploratory test boring drilled to a <br /> depth of 25 feet revealed moist soil, due to past irrigation. The groundwater directional flow <br /> according to the District map appears to be towards the northeast, although many factors can <br /> influence this general flow direction. There is an irrigation well on the north border of the subject <br /> parcel which can be a primary factor in flow direction. <br /> 3 <br /> 'l `• "lity ( Ont., J."P Cti., <br /> eta <br />