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Soil Suitability Study******APN: 005-09-53 ******Parcel Nos. I &2=2.0 and 2.1 acres respectively Runoff is slow, and the hazard of water erosion is slight. The rate of water intake in irrigated areas is 1.0 inches per hour. Applications should be regulated so that water does not stand on the surface and damage the crops. Where feasible, deep ripping of claypan and hardpan layers can overcome these restricted areas. The characteristics of this soil encountered at various depths below the ground surface are as follows: SAN JOAOUIN—URBAN LAND COMPLEX, 0 TO 2 PERCENT SLOPES Depth Liquid Plasticity Percent Permeability Shrink- In Inches Material Limit Index Clay (Inches/Hour) Swell 0" - 16" Loam 15 —30 NP - 10 15 -25 0.6-2.0 Low 16" - 26" Clay Loam, 40- 50 25 - 35 35 -50 <0.06 High Clay 26"—60" Indurated -------- -------- ------- ----------- - - — PERCOLATION TESTS: Not knowing that 36" diameter test holes were excessive in diameter to be used to determine percolation rates, a total of two (2)test hole, one on each of the parcels on the subject property, were drilled on June 3, 2003. The 36" diameter hole was excavated in the belief that it was an appropriate diameter to test to determine the soil percolation rate and could be used later for a septic pit in the future. When the property owner applied for a percolation permit to perform formal soil percolation testing, he was informed that the diameter drilled was too large to be used to secure San Joaquin County Environmental Health Department's approval of a percolation rate. Since the drilled 36" diameter test holes were not acceptable to the county,no formal percolation testing was conducted on them and their locations were not surveyed or shown on the "Test Hole Location Map". On June 10, 2003,preliminary one-hour percolation tests were conducted on 6" diameter,three (3)feet deep test holes that resulted in such poor percolation rates on Parcels 1 and 2 that it became evident that 25' maximum deep percolation testing would be required on these two (2) parcels and a driller was secured on the same day to drill deep percolation test holes on the subject project property. Three(3)deep percolation test holes were drilled on each of the parcels comprising the subject property. The location of both the shallow and deep percolation test holes are depicted on the attached"Test Hole Location Map". The 23.12 deep percolation test hole, DIC, on Parcel 1 serves as the needed Soil Profile Test Hole. See the attached"Percolation Test Details" sheet as well as the text of this report for the specific soil layers character and the "Test Hole Location Map"for test hole location details. The shallow and deep percolation test holes on Parcel 1 were presoaked on June 16, 2003 and percolation rates determined on June 17, 2003. The shallow and deep Rnhert W Tnwera 79R17 No Rtnte Rte 9Q Fnet Frnntnoe Rnnd Aramnn r'.nlifnmia woo d