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1 ' 6.7 Discussion of any potent ional problems predicted and/or the need for an engineered or ' alternative septic system. In this area, the soil is classified as Cogna Loam, Archerdale Clay Loam and Columbia Fine Sandy Loam. Due to this classification and percolation rate, a standard septic system similar to the other homesites would be recommended on the proposed parcel. 6.8 Discussion of percolation rates in relation to the type, size and location of future leach fields needed at the site. Based on the results of the percolation rate and the soils profile, it is ' Dillon&Murphy's opinion that the subject proposed parcels are suited for a typical on-site sewage disposal system. The systems should be properly designed and installed according to the current San Joaquin County criteria for standard septic systems. ' Based on the depth to groundwater in the area,and the size of the proposed parcels,it is our opinion on that the installation of any new proposed septic system, if property installed, should not ' adversely affect the quality of groundwater in the area. 7.0 CONCLUSION SECTION tThe conclusions of this report are based on the information provided regarding the proposed development,the use of the subject property, and the site conditions as they existed at the time we excavated our test hole and performed the percolation test. It was assumed that the test hole and percolation test results are representative of the subsurface conditions in the general area. ' Our services were performed, our findings obtained, and our conclusions proposed in accordance with generally accepted engineering principles and practices. The warranty is in lieu of all other warranties either expressed or implied. Test findings and statements of professional opinion do ' not constitute a guarantee or warranty,expressed or implied. i' J 52 4 �r C. .. 45277 1 ' 4