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Soil Suitability/ Nitrate Loading Study <br /> Schuler Property Tracy, California Irerracon <br /> May 30, 2019 Terracon Project No. NA197026 <br /> Table 3. <br /> Summary of Adjoining Property Septic Permits. <br /> Leach Seepage Pits, <br /> Direction Address Permit# Type Tank Size Leach Line Line(Gallons) Quantity Length Sumps,Filter <br /> Beds,Other <br /> (Feet) <br /> North 3928 W.Stoneridge New Install 1,200 3 80 — <br /> 79-461 New Install 1,200 4 60 1 — <br /> East 3807 W. 11"' SR0048025 Repair — 1 100 — <br /> SR0055205 Destruction — — — – <br /> South 3970 W.Stoneridge 81-338 New Install 1,200 2 80 — <br /> SR0007064 Repair — 2 50 — <br /> West 3941 W.Stoneridge 81-363 New Install 1 1,600 1 4 80 — <br /> 3959 W.Stoneridge 81-339 New Install 1,200 3 80 1 — <br /> Northwest 3917 W.Stoneridge SR0047157 Repair — — — 10'x40'x4'filter <br /> I t: I bed <br /> Based on a review of the EHD permits, the septic systems in the area appear to utilize standard <br /> leach lines. Leach lines are between 50 and 100 feet in length. One of the properties utilizes 10 <br /> foot wide by 40 foot long by 4 feet deep filter bed. <br /> 1.3.6 Septic Repair Permit History in the Vicinity <br /> Septic repairs in the vicinity appear to be for the addition of leach lines. The septic repair permits <br /> can be found in Appendix C of this report. <br /> (00 <br /> 1.3.7 Expected On-Site Maximum Septic Tank Usage 2 <br /> The site is currently developed with a 1,750 SF four bedroom residence with septic system and <br /> r------rte <br /> vacant mobile home-which will be removed priorlo development. The site is proposed to be <br /> developed-With n approximately 1,568 SF threebedroom mobile home and additional septic <br /> system. Per conversations with EHD representatives, 70-gallons of waste per person/day with <br /> an average potential occupancy of two persons per bedroom was used to calculate the maximum <br /> septic tank usage of 560 gallons per day for the existing residence plus 420 gallons per day for <br /> the proposed residence. Refer to Section 2.3.4.1. <br /> 1.4 Groundwater Information <br /> 1.4.1 Groundwater Depth and Gradient <br /> Groundwater was not encountered in our percolation test holes excavated to a depth of 10 feet <br /> below grade surface (bgs) on May 19, 2019. According to the San Joaquin County Flood Control <br /> and Water Conservation District Groundwater Report (SJCWCD) Lines of Equal Depth to <br /> Groundwater Spring and Fall 2015 to 2016, groundwater depth lies between approximately 30 <br /> and 40 feet bgs. The groundwater flow direction and the depth to shallow, unconfined <br /> groundwater, if present,would likely vary depending upon seasonal variations in rainfall and other <br /> Responsive ■ Resourceful ■ Reliable 6 <br />