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r NEIL O. ANL.::RSON & ASSOCIATESI INC. <br /> k� oFRSQ� <br /> d: GEp7ECIII•iICAL•ENVIRONMENTAL•GROUNDWATER•1NSPECT[ON5•TESTING•LABORATORY SHRV CES <br /> CORPORATE OFFICE SACRAMENTO OFFICE <br /> >s w 22 Houston lane 4221 Northgatc Boulevard,Saitt6 <br /> Z <br /> of Saamnto,California 95834 <br /> G ti CW00 (53U)891.6304' Lodi,367 3701 95240 - .. <br /> q �P STOCKTON,(209)472-1091 (209)357-3701, (9X6. 916)9 9 <br /> 'r S O Q RANCHO CORDOVA (916)631-4455 FAX:(209)333-8303 FAX(916)929-9269 <br /> August 21, 2001 <br /> Job No.LG00-339 . <br /> Mr.George Rose. <br /> Western Asset Recovery <br /> 900 Post Road . <br /> Oakdale,CA 95361 <br /> Re: Addendum, Soil Suitability/Nitrate Loading Study <br /> 12897 South Cometa Road,Oakdale California <br /> LA-0f-04 <br /> Dear Mr.Rose, <br /> Per your request,we have completed our evaluation of eleven(11)new proposed residential parcels <br /> located northwest of the intersection of Cometa and EdwardsRoads in Valley Home,California. This work <br /> was performed as a new addendum to a Soil Suitability/Nitrate Loading Study dated October 12,2000: Two <br /> (2)addendum letters dated November 27,2000 and dated April 12,2001 in addition to this letter,supplement <br /> the original-report. <br /> General <br /> Eleven (11)new proposed residential parcels, whose size ranges from 2.10 to 2.47 acres, are <br /> planned to be included as part of the residential development: The location of the eleven(11)parcels are <br /> shown o' Plate no. 1. We understand from San Joaquin County Public Health Services, Environmental <br /> Health Division (SJC PHS-EHD) that additional percolation'tests and an.addendum letter to the,Soil <br /> ,Suitability/Nitrate Loading Study dated October 12,2000 would be required for the project. <br /> Our scope of work included conducting eight(8) new percolation tests, one on each of eight (8) <br /> parcels which have not received a test. Three(3) of the eleven(11)parcels are in areas which have been. <br /> evaluated by a.percolation test performed by our office during the first phase of percolation testing last year. <br /> In addition,an addendum letter describing theyesults of the testing and our recommendations was prepared. <br /> Test.Borin s <br /> On August 8,.10,and,16,2001,eight(8)percolation test�borings were drilled on eight parcels(Plate <br /> 1).Generally,the eight(8)borings composed of similar materials which consisted of a mix of medium sand <br /> within a'matrix of.silt or clay.Below clayey surface soils,sandy silt was the predominate soil type.A thin <br /> clean sandy stratum was normally encountered between the depths of 7-feet to 21-feet. This sandy zone was <br /> selected,farthe percolation test. The-soils encountered during the drilling of the eight(8)percolation test <br /> holes.were similar of the soil conditions encountered-at other locations of the site: <br />