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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: 7.15 35.7 min/inch / 0.467 gallons/ft2/day <br />SILTY CLAY LOAM (CL -ML) <br />I 36 INCH DEEP SOUTH PERC TEST BORING, EL.= 9.06 I 41.7 min/inch / 0.400 gallons/ft'/day I <br />l CLAY LOAM (CL -ML) <br />Aoolication 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 />Respectfully submitted, <br />CHESNEY CONSULTING <br />4 <br />o' <br />Don Chesney, PE <br />Registered Civil Engi7er C75479 <br />ATTACHMENTS <br />otessio�� <br />e,���o� O Chemo v <br />NL). 7';479 <br />'a� Civil <br />°f Calit <br />PERCOLATION TEST RATE DATA SHEETS <br />SOIL ANALYSIS REPORTS <br />PERCOLATION TEST LOCATIONS MAP <br />Page 3 of 3 <br />Chesney Consulting <br />