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05 May 2015 AGE Project No. 14-3119 Page 5 of 7 4.3. SOIL LITHOLOGY WITHIN TEST HOLE The soil was visually described in accordance with the Unified Soil Classification System by a representative of AGE under the supervision of a California Professional Geologist. 5.4. SOIL LITHOLOGY AS RELATED TO FUTURE ONSITE SEPTIC USES The soil sample collected from the boring consisted of soils ranging from sand to silt and gravel in the upper 24 inches to silt with clay at the base of the soil section at 42 inches bsg. The soil type was considered permeable and with a quantity of coarse grained soil (sand) sufficient for liquid waste disposal and treatment. 6.0. PERCOLATION TEST INFORMATION A percolation soil suitability test was performed on the site under EHD permit No. SR0071762 on one four-inch diameter soil boring established to a depth of 42 inches bsg. 6.1. NUMBER OF PERCOLATION TESTS PERFORMED One, shallow.. percolation test was conducted on site. The normal percolation of the test hole required the performance of a 24-hour percolation test, with four and one-half hour observation time period. 6.3. CONSTRUCTION OF PERCOLATION TEST HOLE On 30 March 2015, one boring was advanced for a soil profile and to prepare for one shallow percolation test. The boring was advanced using a four-inch hand auger to a depth of 42-inches bsg. The boring was located more than 100 feet from the current well location and within 50 feet of the septic system location. Following bore hole advancement, the sides of the boring were scraped and loose material was removed from the bore hole. Once the bore hole was cleared of loose material and 2 inches of sand and/or gravel were added to the bore hole. The bore hole was then filled with water to a depth of 12 inches above the gravel at the time of 1200. Test hole was covered for 24 hours to allow for complete saturation of the bore hole. Advanced GeoEnvironnlental,Inc.