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[7] CONCLUSIONS <br /> The results of the percolation tests indicate that there is fast <br /> percolation of the deep boring (5.7 min/in) and a medium <br /> percolation rate of 30 min/in for the shallow test boring. <br /> Although the deep percolation rate of 5. 7 min/in translates to a <br /> recommended sewage disposal area of 6, 000 square feet, it is our <br /> recommendation that there be a 10, 000 square foot leaching area <br /> with sumps due to the medium percolation rate that was observed for <br /> the shallow percolation test. This recommendation only pertains <br /> to a single family residence that may be built in the proximity of <br /> the test locations (See Field Test Data Sheet for test location) . <br /> If a residence is to be built at any other location on the subject <br /> parcel , we recommend percolation testing for that specific <br /> location. <br /> Recommendations for sewage disposal areas and related septic <br /> structures such as pits and sumps are primarily a protection <br /> measure of the underlying groundwater and potentially the <br /> Stanislaus River. Since the subject domestic well is over the MCL <br /> reporting limit, this becomes more of a critical issue. <br /> As noted above, the water table is approximately 45 feet below the <br /> soil surface. Therefore, the groundwater level in this area is <br /> below the ten foot minimum distance between the bottom of any <br /> seepage pits or sumps that may be installed, and the highest <br /> anticipated depth to groundwater, as of the date of this report. <br /> Based upon the documented information from the percolation testing <br /> procedures and the highest anticipated depth to groundwater, there <br /> should not be any adverse impact to the quality of the local area <br /> surface water or groundwater from a proposed septic system. <br /> 5 <br /> % Qulitq (-ontrol Inspection <br />