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5.3 Description of soil lithology as noted from test pit by appropriate professional using <br /> industry standard protocol. The soil in this area is classified as Hollenbeck Silty Clay and <br /> Jack Tone Clay as stated in the Soil Survey of San Joaquin County, as provided by the United <br /> States Department of Agriculture, Soil Conservation Service. <br /> 5.4 Discussion of soil lithology as related to future onsite septic uses: The soils <br /> classified as Hollenbeck Silty Clay and Jack Tone Clay in this area have permeability that is <br /> slow. The percolation rates were between 19.3 —31.3 min/in. (See Appendix.) <br /> 6.0 PERCOLATION TEST INFORMATION SECTION <br /> 6.1 Site map showing the location,with concise and accurate dimensions of the percolation <br /> test holes on the parcel: See Appendix. <br /> 6.2 The minimum number of shallow and deep percolation tests were performed for each <br /> parcel: The shallow percolation test holes were prepared for this application. <br /> 6.3 Description of the date,time and protocol used to prepare the test hole,including depth <br /> and dimensions of hole, preparation of hole, and depth of water used to presoak(minimum <br /> 12 inches): The shallow test holes were excavated to a depth of 42 inches and 12 inches in <br /> diameter and backfilled with 2 inches of"pea gravel" in accordance with County Standards. The <br /> shallow holes were prepared by Mike Toy of Dillon& Murphy on August 12, 2019 at 7:00 a.m. <br /> On August 13, 2019 at 7:30 a.m. the 24 hours presoak period was started. The holes were filled <br /> with 12 inches of water over the gravel at this time. <br /> 6.4 Description of the date,time and condition of the test hole after the 24-hour soak period <br /> (hole still intact, hole dry,preparation of hole,and depth of water used to presoak(minimum <br /> 12 inches): On August 14, 2019 at 7:30 a.m. the shallow test holes were dry. Six inches of water <br /> was added to the holes and the holes were deemed suitable to continue. The shallow tests passed <br /> the minimum County requirements. <br /> 6.5 The test conformed to SJC Policy EH 02-02 (correct depth,diameter,2" gravel,6" water <br /> refill,correct readings recorded). The percolation tests conformed to San Joaquin County Policy <br /> EHD 02-02. <br /> 6.6 Complete Percolation Test Form (including readings) was provided with REHS <br /> verification signature. The rate was correctly calculated using the last reading. See Appendix <br /> for Test Results Form. <br /> Shallow Test(s) <br /> TEST HOLE PERCOLATION RATE <br /> 1 (Parcel 1) 19.3 Min/In <br /> 2 (Parcel 2) 31.3 Min/In <br /> 3 (Parcel 3) 22.7 Min/In <br /> *See Results in Appendix. <br /> 3 <br />