SU0005123 SSNL - Laserfiche WebLink

Home Browse Search

SOIL PROFILE INFORMATION The soil is classified at the time of drilling the holes.No pit was dug. A gravel layer exists in this area and is visable in the stream bed_The gravel layer exists at various depths,depending on the ground elevation.Hardpan exists on all five parcels at various depths. Layers of sand on each parcel vary in thickness from 2'to 4'. PERCOLATION TEST INFORMATION Summary-Satisfactory Percolation Tests Parcel No. Hole Depth(RP) Size Rate(Min/In) Required Leach Field(S.F.) 1 6.92' 4" 4.46 6,000 2 12.37' 4" 5.43 6,000 3. 5.2' 6" 11.9 8,000 4. 3.8' 6" 31.3 10,000 5. 15.86' 4" 14.7' 8,000 The TPM, included, contains a vicinity map and each percolation test hole is plotted and referenced to tot lines. The drilling procedure_is to drill a 25'hole for a profile and determine if any water is present. Because of the gravel deposited in the area the drill went to refusal when contact was made with the larger rocks and the deepest hole drilled was approximately 15'. The sand strata was located on each lot by drilling until visual inspection of the material removed indicated a percable strata. All holes were sleeved with PVC pipe after placing 2" of small gravel in the bottom of the hole and then with the PVC in place additional gravel was placed around the sleeve.(See Hole Preparation Sheet/Smith&Assoc.) On August 4,2006, Parcel 4 and Parcel 5 were tested after the 24 hour pre-soak period. Deep holes received 6"of water and shallow holes 12" of water to begin the pre soak period. After the pre-soak period at 0800, 8/4/06 the 4 hour test began. On August 30, 2006, Parcel 1 and Parcel 2 were tested after the 24 hour pre-soak period. On Septenber 5, 2006, Parcel 3 was tested after the 24 hour presoak period. All holes were dry after the 24 hour pre-soak period. The test conformed to SJC Policy EHD 02-02. Readings were recorded on the field forms. The EHD inspector, Lisa Medina, was present for the required readings and signed the forms. The locations tested and the field observations made indicate suitable soil to support a SFR when the sewer system is installed by permit and inspection from the Environmental Health Department of San Joaquin County. 2.