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5 <br /> 1 <br /> l March 28, 2007 <br /> NOA Project Number: E06122A <br /> , 6.6 Percolation Test Forms and Results <br /> FJ, The completed percolation test form is included in the appendix of this report. <br /> A shallow percolation test is defined b the EHD as being between 36 and 42 inches in depth; a <br /> � p Y g p <br /> satisfactory percolation rate for a shallow test is less than or equal to 60 minutes per inch drop. A <br /> deep percolation test is defined as being between 3.5 and 25 feet in depth; a satisfactory percolation <br /> rate for a deep test is 30 min/in or less. One percolation test must demonstrate a satisfactory <br /> percolation rate within the proposed septic system disposal field of each parcel to be suitable for a <br /> standard septic system. Details of the percolation tests are summarized in Table 4. <br /> i <br /> Table 4. <br /> Summary of Percolation Tests. <br /> Test No., Percolation Percolation Rate Test Comment <br /> c <br /> Date Tested Test Depth(ft) (minutes/inch) Duration (see notes) <br /> _s <br /> Shallow 9-ONorth 3.07 5% 4 hr. Satisfactory Percolation Rate <br /> F <br /> F Deep North 18.34 16.67/30 4 hr. Satisfactory Percolation Rate <br /> 9-29-07 <br /> Shallow South 3.08 83.34 hr. Failing Percolation Rate✓ <br /> 9-29-07 �Gf? <br /> Deep South <br /> i <br /> 9-29-07 24'70 50/� 4 hr. Failing Percolation Rate <br /> � S Note: A satisfactory percolation rate fora"shallow'test is less than or equal to UO minutes per inch. <br /> A satisfactory percolation rate for a"deep"test is less than or equal to 30 minutes per inch. <br /> { 6.7 Discussion of Percolation Test Results <br /> The soils within the primary sewage disposal area of the site have demonstrated a satisfactory <br /> percolation rate in accordance with the requirements of the EHD for the use of a standard septic (` <br /> system. Please refer to the Nitrate Loading Study for more details regarding the sizing of the septic <br /> system. <br /> 6.8 Discussion of Septic System Sizing <br /> F` Septic system construction should follow the San Joaquin. County On-Site Wastewater Disposal <br /> Standards where applicable. Please refer to the Nitrate Loading Study for more details regarding the <br /> sizing of the septic system. Based on the number of parking spaces and uses proposed,we ? <br /> recommend that the septic system be sized for peak flows at 2,107.5 gpd. Based on the San Joaquin <br /> County Onsite Waste Water Disposal Standards for commercial design, the septic system will be <br /> sized according to the following calculations: <br /> 8 <br /> F <br /> i <br />