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33503 S Koster Road Project No.2021-00073 Page 110 <br /> Table 5. <br /> Neighborhood Site Sewage Disposal System Permits <br /> [Address Date Permit Comments <br /> 33447 S Koster Road Issued 06/19/1987 Installation Permit 87-2390 New installation of a septic tank, 3 <br /> APN:255-090-31 leach lines. <br /> 33585 S Koster Road Issued 02/14/1980 Installation Permit 80-79 New installation of a septic tank and <br /> leach field. <br /> APN:255-090-33 <br /> 33662 S Koster Road New installation of a septic tank and <br /> APN:255-160-26 Issued 11/05/2007 Permit SR0052594 2 leach lines with 2 sumps down to <br /> 10 feet bgs. <br /> New septic system installation with <br /> Issued 11/25/1985 Permit 85-1435 leach lines and sumps to 10 feet. <br /> 33510 S Koster Road Issued 08/27/1992 Permit 92-2980 Repair/addition of one leach line <br /> APN:255-160-38 and sump. <br /> Issued 05/25/2000 Permit SR0022901 Repair/addition of one leach line <br /> and sump to 10 feet. <br /> Based on the file review at EHD, the septic systems in the area appear to utilize leach fields <br /> with sumps or pits. From our review, the septic repairs in the vicinity appear to consist of <br /> the addition of leach lines and sumps. These repair permits can be found in Appendix D. <br /> 8.0 PERCOLATION TEST INFORMATION <br /> A site map indicating the location of the percolation test hole location for the parcel is <br /> included as Plate 2 in Appendix A of this report. <br /> At 33503 S Koster Road,one shallow percolation testwas placed approximately 80 feet north <br /> of the south parcel boundary and approximately 25 feet east of the western parcel boundary <br /> which runs parallel, within the anticipated leach field area. The shallow soil boring was <br /> advanced on the property with a 4-inch hand auger. Approximately two (2) inches of "pea <br /> gravel" was placed in the bottom of the open soil boring after the sides were scratched to <br /> Petralogix Engineering,InC. - <br /> 26675 BruelIa Road,Galt,Ca 95632 <br /> (209)-40o-5729 <br /> www.petralogix.com <br />