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Mr.Raymond Vaz <br /> December 14,2001 <br /> Page 2 <br /> Amendment to Soil Suitability Study Report <br /> Four(4) shallow soil borings were drilled on November 27, 2001 to an approximate <br /> depth of 3 feet on Parcels 3, 5, 6, and 7 to characterize the percolation capability of the shallow <br /> soils throughout the property(see attached copy of percolation permit for locations). No ground <br /> water was encountered in any of the borings. The soil encountered was a loose, dark brown <br /> sandy silt generally present between the ground surface to 3-feet in depth. <br /> A four hour percolation test was performed on each of the percolation test holes on <br /> November 28, 2001. Each of the percolation test holes was 4.5-inches in diameter. The holes <br /> were completed into percolation test hole by adding about 1-inch of"pea gravel'to the bottom of <br /> each hole. A open-ended 2-inch PVC pipe with slots on the bottom was then installed into each <br /> hole and 1 to 2 feet of "pea gravel'was backfilled in the annular space to prevent loose soil <br /> from caving in. The holes were pre-saturated on November 27, 2001. A 4-hour test was <br /> conducted at each location in accordance with the requirements of the San Joaquin Division of <br /> Environmental Health. Lisa Medena of that office inspected all the tests. The following table <br /> summaries the percolation test results: <br /> Summary of the Percolation Tests <br /> (original field form attached to this letter) <br /> Name,Date Tested Location of test Depth of test Length of test Result of test <br /> Parcel 3 shallow, 11-28-01 Parcel 3 3.2 feet 4 hours 125 min/in <br /> Parcel 5 shallow, 11-28-01 Parcel 5 3.2 feet 4 hours 18 min/in <br /> Parcel 6 shallow, 11-28-01 Parcel 6 3.25 feet 4 hours 28 min/in <br /> Parcel 7 shallow, 11-28-01 Parcel 7 3.0 feet 4 hours 14 min/in <br /> 77 <br /> //With the exception of the test on parcel 3, the shallow soil exhibited satisfactory <br /> percolation capability. Our office believes that ripping the hard pan probably improved the <br /> percolation rate by r oving the impervious hard pan. The longevity of a satisfactory <br /> percolation rate ' certain. The absence of annual agricultural irrigation applied to the field <br /> w?* e <br /> tend th colation capability of the shallow soil during residential use. As <br /> ithe SJC PHS-EHD Sewage Standards (version 11/96), we believe the project will <br /> rse of deep seepage pits extending to a depth of 25 feet to ensure proper performance <br /> oee septic system placed on the property. <br /> v'/v �/ .;Nr��+• ./l/t'�/a/�'i`+,!ibp! 'jt� Wv� ✓/ .��/' �7�/I'W <br /> 1 w <br /> p h <br /> X150� ' <br />