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' 7851.4.001.01 <br /> Bright Development July 20, 2007 <br /> APN 240-040-02, 24832 South Lammers Road Page 7 <br /> SUITABILITY STUDY <br /> 6 Potential Problems <br /> The only potential problem noted during the tests was the slow percolation rates in the southern <br /> half of the Property which appeared to be influenced by active irrigation. According to the lar <br /> owner, each irrigation block is flood-irrigated on a 21-day cycle. In addition, the amount of <br /> pre-soak water added may have been excessive (e.g., only 12 inches is required and 42 inches <br /> was,added). Based on ou dge of the soils in the vicinity of the project, we expect that a <br /> suitable area for a septi leach field`should exist on each of the parcels. <br /> 6.8 Percolation Test Rate Results <br /> 9test <br /> The pere lation test rates--w,ere approximately 0.04 0.0 0.01 and 0.02 feet per 30 minutes for and / <br /> holes All, BI C1 and C2� respectively. Thisr-fs equrvaldnt to 62.5, no percolation, 250 <br /> 125 minutes per inch. - <br /> 7.0 CLOSING <br /> We understand that this letter includes the data required for the SJCEHD to provide clearance <br /> with respect to Items 3.a and 3.d of the Conditions of Approval for the Minor Subdivision / <br /> Application No. MS-99-10. Please let us know if you require additional information. We look <br /> forward to working with you on this project. <br /> Very truly yours, <br /> ENGEO INCORPORATED <br /> " Hi Z�oCson Preece,, C G uncanE <br /> �O S", <br /> Jo ootlGE f Qf No. 2677 ;' <br /> �`* C Eng 6/30/2008 <br /> jp�jb <br /> ��q �TfCHp AXP'; <br /> Attachments: Figures lFo�CAL�p�F <br /> Percolation Test Rate Forms - <br /> Analytical Report <br /> cc: I —Mr. Mike Huggins, San Joaquin County Environmental "lth Department <br />