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March 28,2005 <br /> NOA Project Number: E05027A <br /> Table 5. <br /> Summary of Percolation Tests. <br /> Test No., Percolation Percolation Rate Test Comment <br /> Date Tested Test Depth(ft) (minutes/inch) Duration (see notes) <br /> P-1 shallow,3/11/05 3.26 __ ¢H, No movement in the last half <br /> hour,fail <br /> P-1 Deep,3/11/05 22.7 __ 4-hr Standing water,no movement <br /> in the last half hour,fail <br /> Note: A satisfactory percolation rate for a"shallow"test is less than or equal to 60 minutes per inch. <br /> / Note: A satisfactory percolation rate for a"deep"testis less than or equal to 30 minutes per inch. <br /> ` V 6.7 Discussion of Percolation Test Results <br /> The soils within the sewage disposal areas of the sit have not demonstrated a satisfactory percolation <br /> rate in accordance with the requirements of the EHD for use of a standard septic system. The soils <br /> of these parcels appear to be suitable for an engineered septic system. <br /> L6.8 Discussion of Septic System Sizing <br /> L Septic system construction should follow the San Joaquin County On-Site WastematerDisposal <br /> Standards where applicable. <br /> L <br /> 7.0 CONCLUSIONS <br /> In summary, the site appear suitable for a use of an engineered septic system. We recommend a Civil <br /> Fngineer ptepate a septic system design for the property unless additional percolation testing on the <br /> indicates a satisfactory rate is achieved and approved by the EHD. Our office has he rnntrarte.l by <br /> the client to prepare engineered septic system designs.They will follow this report shortly. <br /> Perched water was encountered at a depth of 10 feet while drilling the borings on the property.The <br /> depth to groundwater was found to be approximately 110-120 feet below the ground surface for the <br /> period of Fall 1998 and Spring 1999. <br /> V <br /> L <br /> L 9 .,04 <br />