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The final rate for Building A -S was 125 min/in. As noted on the Soil Analysis Report, the soil <br />texture at test depth for Building A -S is a clay (USCS = lean clay CL) with 50% clay and 18% <br />sand fractions, while soil at test depth for Building B -S is a clay loam (USCS = silty clay CL -ML) <br />with 35% clay and 27% sand fractions. <br />These differences in soil texture at perc test depth (a lower clay content and higher sand content <br />for Building B -S) may be a contributing factor as to why there is a significant difference (3x) in <br />perc rates between these two locations. In addition, it may be that some type of activity in the past <br />occurred in this A -S locale that created soil compaction characteristics, thus slowing permeability, <br />since it is adjacent to the Holly Commerce Center facility entrance and Holly Drive. As noted <br />below, the perc rates become significantly more favorable near the north end of proposed <br />Buildings A&B. <br />The final testing protocol was conducted on April 1 at the north end of proposed Buildings A&B. <br />Percolation rates obtained for both Buildings were identical at 35.7 min/in. As with the south <br />tests, these tests were conducted approximately 6.7-9.5 inches above the water table and again, <br />illustrate acceptable permeability under saturated conditions. <br />The Tables below summarize the data obtained from all the tests conducted. <br />TABLE I <br />PERCOLATION TEST RESULTS FOR BUILDING E&E WITH CORRESPONDING <br />TEST DEPTH ELEVATION, SOIL TYPE, PERCOLATION RATE AND <br />APPLICATION RATE IN GALLONS / FT2 / DAY <br />24 INCH DEEP PERC TEST BORING, EL= 6.54 <br />83.3 min/inch / 0.123 gallons/W/day <br />SILTY CLAY LOAM (CL -ML) <br />36 INCH DEEP PERC TEST BORING, EL.= 9.19 <br />50.0 min/inch / 0.311 gallons/fe/day <br />SILTY CLAY LOAM CL -ML <br />Application Rates adapted from Table 3 of the OWTS Policy of the S WRCB and is correlated with the Perc Rate obtained. <br />TABLE 2 <br />PERCOLATION TEST RESULTS FOR BUILDING "A" 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= 7.16 <br />35.7 min/inch / 0.467 gallons/ft'/day <br />SILTY CLAY LOAM (CL -ML) <br />36 INCH DEEPSOUTHPERC TEST BORING, EL: 9.27 <br />125 min/inch / 0.100 gallons/ft2/day <br />LEAN CLAY CL <br />Application Rates adapted from Table 3 of the OWTS Policy of the SWRCB and is correlated with the Perc Rate obtained. <br />Page 2 of 3 <br />Chesney Consulting <br />