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TABLE 3 <br /> PERCOLATION TEST RESULTS FOR BUILDING "B" NORTH/SOUTH TESTS <br /> WITH CORRESPONDING TEST DEPTH ELEVATION, SOIL TYPE, <br /> PERCOLATION RATE AND APPLICATION RATE IN GALLONS /FT /DAY <br /> 36 INCH DEEP NORTH PERC TEST BORING,EL.=7.1.5 35.7 min/inch / 0.467 gallons/f2/day <br /> SILTY CLAY LOAM(CL-ML) <br /> 36 INCH DEEP SOUTH PERC TEST BORING,EL.=9.06 41.7 min/inch / 0.400 gallons/ftZ/day <br /> CLAY LOAM CL-ML <br /> Application Rates adapted from Table 3 of the OWTS Policy of the SWRCB and is correlated with the Perc Rate obtained. <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> The data presented in this report, along with additional information and data obtained through the testing <br /> and analytical procedures,will be used in the Nitrate Loading/Soil Suitability Studies as required by the <br /> EHD. Prior to, and during construction of the effluent disposal structures, I will be available to work with <br /> Siegfried Engineering and the selected contractor. <br /> The surface soils over the entire site,down to approximately 1.5 ft below grade consists of a highly <br /> organic, lean clay material(OL/CL)that forms clods and fissures,thus readily allowing water infiltration. <br /> If this material is to remain in-place prior to disposal system construction,these areas should not be driven <br /> over,or parked upon to prevent compaction. During emplacement of the sand filter material, some of this <br /> material will enter these fissures and must be accounted for in calculating volumes. <br /> From the perc test results for the proposed Buildings,we find permeability even where the fine-grained <br /> soils possess a high degree of saturation due to capillary fringe influence and the significant rainfall that <br /> has recently occurred. In the one area where permeability was unacceptable(Building A, South @ 125 <br /> min/in),this test result appears to be an anomaly. Soil permeability increases and becomes more <br /> favorable at the north test site locations. <br /> Thank you for the opportunity to provide this service. Please contact the undersigned if there should be <br /> any questions. <br /> 4tofessio <br /> Respectfully submitted, �a Che�°'�i o <br /> CHESNEY CONSULTING q �, <br /> aNo.75479 <br /> h <br /> Don Chesney,PE `rat Civil <br /> Registered Civil Engin7erC75479 e Of Califot <br /> ATTACHMENTS <br /> PERCOLATION TEST RATE DATA SHEETS <br /> SOIL ANALYSIS REPORTS <br /> PERCOLATION TEST LOCATIONS MAP <br /> 'I <br /> Page 3 of 3 _J/ <br /> Chesney Consulting <br />