SU0000892 SSNL - Laserfiche WebLink

Home Browse Search

[4] Cont. The percolation tests conducted on parcel #3 were performed with a 45" shallow test boring and a 6 ' 7" deep test boring. The test results reveal a failure rate of 0 min/in for the shallow test boring due to the heavy clay soil structure at this depth. The deep test boring was conducted in the sand strata referred to above. This deep percolation test indicates a rate of 2 min/in. The percolation tests performed on parcel #4 had failure rates for both the shallow and deep test borings of 40" and 12 ' 6" respectively. The soil structure encountered at the shallow depth consisted of a heavy clay material, which would be indicative of a potential failure rate. However, the deep percolation test was conducted in the encountered sand strata. Quality Control Inspection, Inc. believes the failure rate for this deep test boring is an anomaly due to an inexplicable reason. Therefore, an - average of the deep test boring percolation rates from parcel #1 and parcel #3 will be used to extrapolate a percolation rate for parcel #4 . This rate for parcel #4 is calculated to be 6 min/in. [5] LOCAL SURFACE WATER AND GROUNDWATER INFORMATION As referenced earlier, the Lone Tree Creek is the north border for parcel #2 and parcel #3 . Distance requirements pertaining to the orientation of the entire septic system must be strictly adhered to, so as to prevent any potential contamination by sewage effluent into Lone Tree Creek. The 1991 "Lines of Equal Depth of Water in Wells" map produced by the San Joaquin County Flood Control and Water Conservation District indicates that static water elevation is located at approximately 85 feet in the area of the subject site. A water level measurement on a nearby domestic well confirmed this depth. The exploratory boring drilled to a depth of 25 feet in the lowest point of the subject property, reveals no indication of wet soil , 4 j p Q-11ty (-ontrol 'nspectirm