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FFi n January 3, 2007, the two perc test borings were drilled in the referenced locationI of each boring were scored with a pry-bar to open potentially smeared sidewalls. gravel was placed at the bottom and three-inch perforated PVC pipe was inserted ng. On January 8, 2007, each boring was pre-saturated with water at 3x each bore 00 hrs, 24 hrs before the start of testing. This greatly exceeds EHD pre-saturation standards. SSS06 ,� 5).. On January 9, 2007, percolation testing commenced. No standing water was obseathe 24-hr soak period in either of the two test borings. Consequently, EHD Perc Test Procedure #2 was conducted in which testing was done over a four hour period to induce maximum soil saturation. The test results indicate relatively equal perc rates between the 24 inch and 40 inch perc test depths, at 10.4 minutes per inch(min/in) and 14.7 min/in, respectively. A summary of the perc test results with corresponding application rates in gallons of effluent accepted per square foot of soil,per day are found in Table 2 for the proposed disposal area: TABLE 2 PERCOLATION TEST RESULTS FOR THE DISPOSAL AREA MOUND SYSTEM WITH CORRESPONDING APPLICATION RATES IN GALLONS / FTZ/ Y 24 INCH DEEP PERC TEST BORING 14. inch / 0.729 gallons/ft/day PERCOLATION RATE/APPLICATION RATE 40 INCH DEEP PERC TEST BORING 10.4 inch / 0.786 gallons/ft/day PERCOLATION RATE/APPLICATION RATE Application Ram adapted from Calt(omia Stam Water Resources Control Board Guidelines for the Design of Se ge Systems and is based on the Perc Rate, Double Ring Inliltrometer Tests In addition to the conventional percolation tests described above, a double ring infiltrometer test was conducted near the percolation tests. This test was done under ASTM Test Method for Infiltration Rate of Soils in Field Using Double-Ring 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' -cmZ / 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 inside the other, into the soil and then filling the rings with water; for these tests to a depth of 7.67;-Cm... The annular spaces were presaturated with 12 inches of water the day before testing. No soil acking was observed in the soil surface. The purpose of the outer ring is to promote one-dimensional, vertical flow beneath the inner ring. 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 3. 5 Chesney Consulting