SU0009809_SSNL - Laserfiche WebLink

Home Browse Search

4, Odyssey Landscape—Soil Suitability Section Page 4 of 13 Our Project Number: NA157000 March 17, 2015 • 4170 West Highway 12, east of Ray Road, has a from 1959 permit for a new septic system installation; parcel 14250 North Ray road, southeast of the site, has a permit a„ from 1967 for a new septic system installation, a permit from 1974 for the addition of leach lines, and a permit from 2011 for the replacement of the septic system; • 14931 North Flag City Boulevard, two parcels west of the site, has a permit from 1996 4 for the destruction of a septic system; • 5555 West Kingdon Road, south of the site, has a permit from 1972 for a new septic system installation; • 5671 West Kingdon Road, south of the site, has a permit from 2007 for the destruction and replacement of a septic system. Based on the files reviewed, the septic systems in the area appear to utilize standard leach lines, filter beds, and sump pits. Leach lines are up to 100 feet in length and filter beds are up to 65 feet in length. Sump pits are up to eight feet in depth. 1.3.6 Septic Repair Permit History in the Vicinity Based on a recent file review at the EHD, the septic repairs in the vicinity appear to be for the `- addition of leach lines. The septic repair permits can be found in Appendix D of this report. 1.3.7 Expected On-Site Maximum Septic Tank Usage Maximum expected usage on the proposed parcel would consist of the above mentioned office building for up to 15 permanent employees and the above mentioned shop building for up to 5 permanent employees, with the occasional visitor (up to 5 per week maximum anticipated) taken into account. Septic system design should be based on the San Joaquin County On-Site Wastewater Disposal Standards or other engineering recommendations. 1.4 Groundwater Information 1.4.1 Groundwater Depth and Gradient Groundwater was not encountered by the staff of Neil 0. Anderson & Associates, Inc. during the drilling to a depth of 39 inches on February 18, 2015. Groundwater is therefore determined to be at a greater depth than 39 inches bgs. The San Joaquin County Flood Control and Water Conservation District (2013 and 2014) groundwater elevation maps were reviewed to determine the groundwater levels near the Site. The Spring 2013 and Spring 2014 depth to groundwater maps are the most current official maps available from the County Groundwater Report. According to these maps (Plates 3 and 4) -• groundwater lies at approximately 20 to 30 feet below ground surface (bgs). Per the I) Department of Water Resources (DWR) Water Data Library irrigation well', approximately 0.80 miles southeast of the site, depth to groundwater was 32.5 feet in 2013. The approximate site htto://www.water.ca.¢ov/waterdatalibrary/Groundwater level station local well I.D.03N06E18M003 ©2015 Neil O.Anderson&Associates,Inc. A Terracon Company