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TABLE 2 PERCOLATION TEST RESULTS WITH',CORRESPONDIN7AREA APPLICATION RATES IN GALLONS / FT'/DAY NEARNORTHEAST CORNER (NEC)OF PROPOSED DISPOSA TEST DATE: AUGUST 10 2006 PERCOLATION TEST BORING PERCOLATION RATE /APPLICATION RATE 24 INCH TEST BORING 16.7 min/inch/0.700 gallons/ft'/day 42 INCH TEST BORING 10.0 min/inch/0.800 gallons/ft"/day 108 INCH(9 FT) TEST BORING 15.6 min/inch/0.714 gallons/ft'/day 180 INCH(15 FT)TEST BORING 83.3 min/inch 10.230 gallons/ft2/day Application Rates adapted from California State Water Resources Control Board Guidelines for the Design of Sewage Systems. TABLE 3 PERCOLATION TEST RESULTS WITH CORRESPONDING APPLICATION RATES IN GALLONS /FV/ DAY NEAR SOUTHWEST CORNER (SWC) OF PROPOSED DISPOSAL AREA TEST DATE: AUGUST 11 2006 PERCOLATION TEST BORING I PERCOLATION RATE / APPLICATION RATE 24 INCH TEST BORING 35.7 min/inch/0.516 gallons/ft'/day 42 INCH TEST BORING 25.0 min/inch/0.593 gallons/ft'/day 114 INCH(9.5 FT)TEST BORING 22.7 min/inch/0.614 gallons/ft i'day 180 INCH(15 FT)TEST BORING 250.0 min/inch/0.200 gallons/ftZ/day Application Rates adapted from California State Water Resources Control Board Guidelines for the Design of Sewage Systems. Double Ring Infiltrometer Tests In addition to the conventional percolation tests described above, a double ring infiltrometer test was conducted near the SWC of the disposal area. The double ring apparatus used for this test is illustrated in a photograph found in Appendix 9 and was done under ASTM Test Method for Infiltration Rate of Soils in Field Using Double-Rina Infiltrometers - D3385. The infiltrometer test measures the incremental infiltration velocity,which is the quantity of flow per unit area, over an increment of time (cm' - cm2 / sec). Infiltration is the downward entry of liquid into the soil and is measured by the infiltrometer. This test method involves driving two open cylinders, one side the other, into the soil and then filling the rings with water; for these tests to a depth o 7.62 c The purpose of the outer ring is to promote one-dimensional, vertical flow beneath the innek r jAlf. The volume of water added to the inner ring to maintain the liquid level constant with the starting value, is the measure of water that infiltrates the soil. Water volume infiltrated during 30 minute intervals for four hours is converted to an incremental infiltration velocity expressed in centimeters per hour(cm/hr), cm/sec and min/in, as illustrated in Table 4. Page -8- Chesney Consulting i