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Mary's Mini Mary Page 7 of 10 Our Project Number: LG5080518 May 30, 2008 Table 5 Soil Boring Log Depth Interval (ft) Soil Type Unified Soil Classification 0-4 Brown gravelly sand with some clay GC 4-5 Dark brown clayey sand Sc 5 5.5 (auger refusal) Dark brown sandy clay with gravel GC ✓S.4 Discussion of Soil Lithology A visual inspection of the soils from on-site drilling indicates little potential for percolation because of the fine-grained nature of the soils. A percolation test is the best method to determine the suitability of the soils for a septic disposal area. Please see the next section for percolation test results. Generally speaking, coarser-grained soils have much greater potential for percolation than fine-grained or cemented soils on-site. 6.0 PERCOLATION TEST INFORMATION 6.1 Percolation Test Locations A Site Map indicating the locations of the percolation test holes is included as Plate 1 in the appendix of this report. !'6.2 Number of Percolation Tests One (1) shallow and one (1) deep percolation test were conducted on the parcel for a total of two (2) percolation tests conducted on the property. 6.3 Boring Preparation and Presaturation The soil borings were advanced on the property with a truck-mounted deep rock auger rig on May 28, 2008. Auger refusal was encountered at five (5) feet due to the cemented clays and gravels. A 1.5-inch diameter PVC pipe with perforations on the bottom was used to measure the drop of water in the percolation test boring. Approximately 2 inches of "pea gravel" was placed in the bottom of the open soil boring, and then the PVC pipe was installed on top of the gravel. "Pea gravel"was then used to backfill in the annular space. ",44 902 Industrial Way•Lodi,CA 95240•209.367.3701 • Fax 309.369:4228 Sr',2008 Nei/0-Anderson&A.ssoriates.Inc