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The shallow holes were prepared by Louie Mendez of Dillon&Murphy on April 20, 2005. On April 21, 2005 at 7:30 a.m. the 24 hour presoak period was started. Each hole was filled with 12 inches of water over the gravel and at this time Environmental Health Department was notified of the start of the test. Since one of the two shallow tests failed, Neil O. Anderson &Associates (Anderson)were retained to dig a deep percolation test. Anderson dug the deep hole on July 29, 2005. Presoaking of the holes commenced on July 31, 2005 and the test was performed on August 1, 2005. The deep hole was dug to a depth of 25 respectively and filled with one inch of"pea gravel". A 2 inch pvc pipe with open ends and slots was placed in the hole. About 6 inches of "pea gravel" was placed in the annular space around the pipe. 6.4 Description of the Date,Time and Condition of the Test Hole After the 24-Hour Soak Period (Hole Still Intact, Hole Dry, Depth to Water Remaining in Hole, Etc.): On April 22, 2005 the two shallow test holes were dry. Six inches of water was added to each hole. There was an adequate drop in the water level and the test was deemed suitable for completion. On August 1, 2005, the deep test hole was found to be intact and no water remained in the test hole, thus the 4 hour test was performed. (See test results below) 6.5 The Test Conformed to San Joaquin County Policy EHD 02-02 (Correct Depth, diameter, 2" gravel, 6" Water Refill, Correct Readings Recorded): The percolation tests conformed to San Joaquin County Policy EHD 02-02. 6.6 Complete Percolation Test Form (Including Readings) Was Provided With REHS Verification Signature. The Rate Was Correctly Calculated Using the Last Reading: See Appendix for Test Result Form. SHALLOW TEST HOLE PERCOLATION RATE 1 60 MIN./IN. 2 Fail (See Results in Appendix) DEEP TEST HOLE PERCOLATION RATE 1 Fail (See Results in Appendix 6.7 Discussion of Any Potential Problems Predicted and/Or the Need for An Engineered or Alternative Septic System: In this area, the soils are classified as a Kingdom fine sandy loam, San Joaquin loam—thick surface, and Tokay fine sandy loam. Due to this classification and percolation rates, a standard septic system similar to those found on surrounding parcels would be recommended for parcel 1. An engineered system is recommended for parcel 2. 6.8 Discussion of Percolation Rates in Relation to the Type, Size and Location of future leach fields at the site: Based on the results of the percolation rates and the soils profile, it is Dillon&Murphy's opinion that the subject proposed parcels are suited for a typical on-site sewage disposal system. This system should be properly designed and installed according to the current San Joaquin County criteria for standard septic systems. 4 c:\0423\Soil Report