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installed. The systems vary in age up to approximately 30 years old. The systems experienced no unusual failure. Some systems have been repaired by adding additional pits. These types of repairs can be attributed to age and are considered standard maintenance to any system. Parcel 1 can ultimately have two homes built on it. Current zoning allows for a primary residence and a second unit dwelling. Each would have its own septic system. Given the size of Parcel 1 (five acres), I would expect the property to support potentially two new septic systems. V. GROUND WATER AND DEPTH TESTING According to the map of "Lines of Equal Depth of Water Wells" published Fall, 1999, by the San Joaquin County Flood Control and Water Conversation District, the depth to groundwater at this location is approximately 120 feet. (See appendix). The gradient of the groundwater in this area is descending from south to north. Based on the results of the groundwater testing (as shown in the Appendix), I have no reason to believe there is any groundwater or potential groundwater contamination in the area. VI. SOIL PROFILE AND PERCOLATION TESTS Two test holes were excavated to depths of 3.5 feet in the area of the homesite and on Parcel 1 . The purpose of the test holes was to determine percolation rate in this area. For approximate location of the test holes, see the Tentative Parcel Map in the Appendix. The holes were prepared in accordance with County Standards. Generally, the surface soils lithology consisted of a sandy clays, clayey sand, and cemented silt. The initial shallow tests encountered clay at hole depth (42") and that is the reason for minimal percolation rates. A copy of the soils classification map prepared by the U.S. Department of Ag Soil Conservation Service is included in the Appendix. Their map classified the soil as "sandy loam" and .,sandy loam, hard substratum." As initial shallow percolation tests proved inadequate for conventional septic systems, deep percolation tests were performed. The deep tests performed by Neil 0. Anderson & Associates (Anderson) indicated the Iithology to be "clayey sands, sandy clays and cemented silt." This is consistent with the Iithology noted on nearby septic permits. Permit No. 76-762 (September 3, 1976) did indicate hardpan. I expect future septic systems to experience similar soil Iithology. Shallow Test One percolation test was performed on the morning of July 18, 2003 in a hole 8 inches in diameter by 42 inches deep backfilled with 2 inches of gravel. The 2 CA01116\ SOILS REPORT 082703