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SOIL SUITABILITY STUDY FOR THE NOREEN THOMPSON PROPERTY PARCEL MAP NO . MS-98-27 , PARCEL NOS . 1 AND DESIGNATED REMAINDER 3157 EAST WOODSON ROAD, ACAMPO , CALIFORNIA 95220 November 18 , 1998 Prepared By " - Walter E . CurtisX5'34 N Civi 1 Engineer C. E . # 11584 vI-\- 418 Matthew Plaza Lodi , California 95240 Phone : ( 209 ) 368-4159 PROJECT DESCRIPTION : To create and separate out a 2 . 0 acre parcel homesite , Parcel No . 1 , from a present 10 . 25 acre parcel . The new 2 . 0 acre parcel is for residential purposes and is centered on the portion of the 10 . 25 acre parcel that fronts on Ca1imyrna Road . The present 10 . 25 acre parcel has a home , a storage building , a well and a septic system in the southeast corner of the property . The remainder of the designated remainder parcel of the property is unimproved and presently used to graze horses and goats . TEST RESULTS : Parcel No . Test Hole Percolation Rate Minimum Usable N0 . (Minutes Per Inch) Disposal Area (Square Ft . ) With Pits 1 PH1 ( 3 ' ) 480 (Failed) None Recommended Desig . Remainder RPH (3 ' ) 240 (Failed ) None Recommended 1 PH1A ( 19 - 08" ) 8 . 57 12 , 000 + Pits Desig . Remainder RPHA (9 ' 10" ) 7 . 50 12 , 000 + Pits Soil Profile : Percolation Test Hole PH1A dug to a maximum depth of 19 ' 08" is used for Soil Profile reporting . See the attached "Field Percolation Data Sheets" for Percolation Test Hole Nos . PH1 , RPH , PH1A , RPHA and URPH and the "Site Plan" as well as the text of this report for specific soil layer character and location details . No water was encountered in excavating any of the five (5) percolation test holes . Well Water Analysis : See the attached "Far West Laboratories Inc . " letter , dated October 5 , 1998 , as well as the text of this study report regarding Nitrate and DBCP concentrations . RECOMMENDATIONS : Due to two ( 2 ) , PH1 and RPH , of the preliminary non-standard 3-foot depth perco 1 at i on tests f a 1 i ng to meet the San Joaquin County Health Service , Environmental Health Division requirement of a percolation rate no greater than 60 minutes per inch , the use of a subsurface horizontal leach field solely is not permitted . Effluent is recommended to be discharged into 12 , 000 square feet minimum usable disposal areas in combination with subsurface horizontal leach lines into seepage pits at a maximum depth of twenty-five feet for both Parcel Nos . 1 and the designated remainder parcel .