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Soil Suitability/Nitrate Loading Study Irerracon <br /> Proposed Commercial Truck Yard ■ Stockton, CA <br /> August 16, 2019 ■ Terracon Project No. NA197053 <br /> Table 2. <br /> Site Specific Permit History. <br /> Leach #Seepage <br /> Address Permit# Type Tank Size Leach Line Line Pits/Sumps,Width, <br /> (Gallons) Quantity Length Length, Depth(Feet) <br /> (Feet) <br /> 71-580 Septic 2,400 2 80 6x6x10 sump <br /> 71-840 Septic 2,400 2 80 6x6x10 sump <br /> 6800 S.EI Dorado St. 9348 Septic 1,200 1 75 2.75 x 20 seepage pit <br /> SR0080915 Perc --- --- --- <br /> WP003948 Grout <br /> --- --- --- --- <br /> 2 <br /> NF—No septic permits found, LL—leach lines <br /> Based on a review of the permits, the former site septic systems utilized 75 to 80 foot leach lines <br /> with a sump or seepage pit. One permit (77-1464) dated 1977 indicated a new well was installed <br /> on the site; however, based on the site diagram, the well appears to be located at the adjoining <br /> western address of 6901 S. EI Dorado Street (formerly State Highway 50). <br /> 1 .3.3 Discussion of On-Site Septic Tank Repair <br /> No repair permits were found for the site address. <br /> 1.3.4 Existing Septic Tank Usage in the Vicinity <br /> In an attempt to determine the septic system density for the vicinity of the site, our office reviewed <br /> a recent aerial photograph of the property available from GoogleEarthTM. The vicinity of the site <br /> consists of agriculutural land and residences. The assumption was made that each <br /> building/cluster of buildings has one septic system. Using this method, we determined there are <br /> approximately 15 septic systems within 0.25 miles of the site. <br /> 1.3.5 Septic Permit History in the Vicinity <br /> Terracon searched the EHD Public Records website for the adjoining property septic permits.The <br /> following table is a summary of septic permits available for the adjacent properties: <br /> Table 3. <br /> Summary of Adjoining Property Septic Permits. <br /> Leach Seepage Pits, <br /> Filter Bed <br /> Direction Address Permit# Type Tank Size Leach Line Line Width x <br /> (Gallons) Quantity Length Length x <br /> (Feet) Depth(Feet) <br /> North --- --- --- -- <br /> East --- --- --- -- <br /> South 1 7130 S.EI Dorado St. NF <br /> Responsive■ Resourceful ■ Reliable 6 <br />