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GROUNDWATER INFORMATION The Map-Lines of Equal Depth to Groundwater indicates water at approximately 10 feet. No water was observed seeping into the 10 foot profile hole. The domestic well at 5730 was tested X by FarWest Labs, Inc., and the test results are included in this report. No third party was involved in the sampling and testing. The lab analysis of the well water indicate 180 mg/1 of Nitrates and <0.01 ug/1 of DBCP. The lab report is included. The owner was informed of the test results. It is our understanding he is considering reverse osmosis equipment at the well versus each residence having the equipment installed. The finance parcel will have a new well. SOIL PROFILE INFORMATION,/' Four shallow holes, 6" in diameter were hand augured to a depth of 42". One of the four was later augured to a depth of 10'. No pits were dug. The soil was classified as it was removed from the holes. The general soil map of San Joaquin County indicates the soil component is Tokay. (Fine sandy loam) The soil observed was non-plastic to approximately 35"- 40". Below that was a thin layer of sandy clay, 42"48", silty, clayey sand to 9' and dense sandy clay to 10'. PERCOLATION TEST INFORMATION The Parcel Map included locates the percolation test hole. The site is vacant Only shallow holes were tested due to high water table. Four holes were augured. One was filled in and covered by gophers. On 4125105 the three remaining holes were sleeved with 4" PVC after placing two inches of gravel on the bottom. Additional gravel was placed around the sleeve. The holes were 6" in diameter. The presoak began on Tuesday, at 0900, April 26, 2005, by placing 12 inches of water in each hole. The testing began on April 27 at 0900. The three holes were dry. Six inches of water was added to each hole. No visable damage from the gophers was observed. Only one hole was observed by the representative from the EHD, SJC. The percolation rate was satisfactory and observed by Lisa Medina, Sr. REHS. The test conformed to SJC Policy EHD 02-02. The owner plans to construct a 5 bedroom residence. The site is in the yellow zone and requires 100 LF of standard trench, or equivalent, for each bedroom. A 2000 gallon tank is required or multiple 1200 gallon tanks.. CONCLUSION The testing conducted, field exploration and research completed are indicative of satisfactory soil for residential on site septic purposes. A large population of gophers exists on the site. The standard trench, with gravel/rock would be more resistant to damage by the movement of soil by the gophers. The 2.3 acre parcel is adequate in size to accommodate an on site septic system, for residential purposes, installed by permit from the EHD, SJC. 2.