SU0007926 SSNL - Laserfiche WebLink

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2748 1984 X 15 3104 1964 X 5 3104 1969 X 40 3160 1981 X Destruction in 2003 3658 1972 X 11 3658 1983 X 26 3036 2003 X 6 The length of satisfactory service ranges from 5 years to 40 years. An approximate average is 16 years. The data indicates a service life on the low side. However in this area of clay soils and unknown maintenance by the home owners it is considered acceptable to install standard septic systems properly sized according to EHD, SJC current standards. GROUNDWATER INFORMATION SECTION The water test by Far West Labs show Nitrate as 7.2 mg/L and DBCP as<0.01 ug/L. The sample✓ meets current California drinking water standards. No third party is involved in the testing process. The Log is furnished by the Lab and included with the report.No representative of Earnest F. Smith was present for the sampling. The map"Lines of equal depth to Water, "1999" shows approximately 65'to static water. SOIL PROFILE INFORMATION SECTION No pit was dug. The approximate location of the test hole is shown on the map. The soil is silt-clay, interspersed with thin layers of sand. PERCOLATION TEST INFORMATION The field form dated Oct. 20, 2009 contains the test data and is included in this report. The test holes (8" in Dia.)were sleeved with PVC pipe. Two inches of small gravel were placed in the bottom of the holes. Additional gravel was placed around the PVC pipe as shown on the included schematic detail. The shallow holes were 42" deep. The 24 hour pre-soak period began on Oct.19, at 1000 hours. The 4 hour test portion began at 1000 hours on Oct.20. The tests conformed to SJC Policy EHD 02-02. Summary of tests: The shallow holes failed. The deep hole (8.45'RP)passed. Mr. Mike Escotto, R.E.H.S., EHD of SJC was present for the critical readings. Pits are required in addition to leach ;tines. 2.