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February 25, 2002 Job Number:LGOI-397 Page 16 rm septic system with leach lines and seepage pits. We estimate that proposed project will not cause a build up of nitrogen in the ground water above 10 mg/L-N in ground water provided our recommendations are followed. Due to the presence of clayey soils,unsatisfactory percolation rates, and limited ` expansion area, the existing eastern septic system is not well suited for a large septic system expansion required to handle the flow during cherry processing season. We recommend a new septic system should be located near percolation test P-4 instead. The new area has increased .. percolation potential and adequate absorption area. It is important the new septic system be properly sized to accommodate the peak septic system waste water flow resulting from use by temporary employees. The recommendations for the project are as follows: 1) We recommend constructing a new septic system with leach lines and seepage pits on a portion of the new property obtained through the lot line adjustment. The area near our percolation test P-4(Boring B-5) was found to be suitable. The septic system should be sized to accommodate the expected peak flow from ` approximately 600 temporary employees plus regular staff. As part of a separate scope of work, our office can prepare you with a septic system design and layout optimized for the use previously indicated. 2) Follow the San Joaquin County Public Health Services Sewage Standards where applicable. IX. LIMITATIONS The conclusions of this report are based on the information provided regarding the existing and 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. OE�t � oy Z 4 O ' �'SS OLS