SR0085724_SSNL - Laserfiche WebLink

Home Browse Search

5.4 Discussion of soil lithology as related to future onsite septic uses: The Kinglile Muck has a permeability that is slow. The Ridge Muck has a permeability that is rapid. The Ryde Silty clay loam and Valdez Silt loam have a permeability that is moderately slow. 6.0 PERCOLATION TEST INFORMATION SECTION 6.1 Site map showing the location,with concise and accurate dimensions of the percolation test holes on the parcel: At the time of hole preparation, the holes encountered groundwater at 2.2 feet and 2.5 feet. See Appendix for approximate hole locations. Therefore percolation tests were not performed per San Joaquin County Environmental Health Department. See pictures located in Appendix. 6.2 The minimum number of shallow and deep percolation tests were performed for each parcel: N/A 6.3 Description of the date, time and protocol used to prepare the test hole, including depth and dimensions of hole, preparation of hole, and depth of water used to presoak(minimum 12 inches): N/A 6.4 Description of the date,time and condition of the test hole after the 24-hour soak period (hole still intact,hole dry,preparation of hole,and depth of water used to presoak(minimum 12 inches): N/A 6.5 The test conformed to SJC Policy EH 02-02 (correct depth,diameter,2" gravel,6" water refill, correct readings recorded). N/A 6.6 Complete Percolation Test Form (including readings) was provided with REHS verification signature. The rate was correctly calculated using the last reading. N/A 6.7 Discussion of any potential problems predicted and/or the need for an engineered or alternative septic system. In this area,the soil is classified as Kingile Muck, Rindge Muck, Ryde Silty clay loam, and Valdez silt loam. Due to soil type and high ground water, if a homesite is ever proposed, a specific Engineered septic system should be designed by a Licensed Engineer. As previously,discussed,the groundwater was so shallow that percolation tests were not feasible. Conventional disposal systems (leach lines and pits)will not work on this property. Rather, if a home(or any building requiring septic) is proposed, a specific engineered system should be designed by a licensed Engineer and submitted to Environmental Health for approval. It must be designed and installed according to the current San Joaquin County criteria for septic systems. In our opinion, installation of any new proposed system, if designed and installed properly, will not adversely affect the quality of the groundwater in the area. 3