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Soil Suitability/ Nitrate Loading Study 1rerracon <br /> Whitlow Property Stockton, CA <br /> November 20, 2019 Terracon Project No. NA197078 <br /> Leach <br /> Tank Size Leach Line Line Seepage Pits, <br /> Direction Address Permit# Type Width x Depth <br /> (Gallons) Quantity Length (Feet) <br /> (Feet) <br /> 20464 New Install 800 1 50 One 2x10x12 <br /> (1966) Office sump <br /> 78-223 New Install 1,200 2 40 Two 2.75x25 <br /> Office <br /> 87-1507 New Install 11200 1 40 One 3x25 <br /> &Repair Shop <br /> New Install <br /> 88-386 Gym& 3,200 3 60 Three 4x25 <br /> Hanger <br /> East 11292 N.Alpine Rd 88-387 New Install 3,200 3 60 Three 425 <br /> House <br /> 88-2439 New Install 3,200 3 60 Three 425 <br /> House <br /> 90-891 pair --- 1 40 One 3 <br /> Gym <br /> SR0011921 Repair ___ 2 40 Two 425 <br /> House <br /> SR0030442 New Install 2,000 3 60 <br /> House <br /> South 11033 N.Alpine Rd NF --- --- --- I --- I --- <br /> 700 Feet 10999 N.Alpine Rd 77-697 New Install 1,600 3 75 Three 3.5 x 25 <br /> South <br /> West 11121 N.Alpine Rd NF --- --- --- --- --- <br /> NF—No septic permits found, LL—leach lines <br /> Based on a review of the permits, the septic systems in the area appear to primarily utilize 40 to <br /> 75 foot leach lines with one 25 foot deep seepage pit at the end of each leach line. Seepage pit <br /> widths range between 2.75 and 4 feet. <br /> 1.3.6 Septic Repair Permit History in the Vicinity <br /> Septic repair permits appear to be for the addition or replacement of leach lines with seepage <br /> pits. Septic permits can be found in Appendix C of this report. <br /> 1.3.7 Expected On-Site Maximum Septic Tank Usage <br /> The total maximum daily septic tank usage for the site will be approximately 560 gallons per day <br /> (gpd). Refer to Section 2.3.4 for the waste water flow calculation. <br /> 1.4 Groundwater Information <br /> 1.4.1 Groundwater Depth and Gradient <br /> Groundwater was not encountered within our geotechnical or percolation test borings which were <br /> drilled between 3.5 and 25 feet below grade surface (bgs). <br /> Responsive ■ Resourceful ■ Reliable 6 <br />