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Soil Suitability/ Nitrate Loading Study 1rerracon <br /> Whitlow Property Stockton, CA <br /> November 20, 2019 Terracon Project No. NA197078 <br /> 2016 when one of the structures was removed. At the time of Terracon's field activities, the <br /> remaining structures had been removed reportedly due to a house fire. <br /> 1.3 Existing and Proposed Septic Tank Usage <br /> 1.3.1 Existing On-Site Septic Tank Usage <br /> There are currently no septic systems located on the site. <br /> 1.3.2 Site Specific Permit History <br /> Based on a review of the EHD Public Records website, one septic repair permit (72-306)for the <br /> addition of 130 feet of leach drain and one septic destruction permit (SR0080869) dated 2019 <br /> were available. Two additional Well/Pump permits (72-136 and SR0028453) were available for <br /> the site address. Based on a review of the permit (SR0028453) dated 2002, groundwater was <br /> encountered at 94 feet bgs. The permit additionally indicated the groundwater well was <br /> approximately 181 feet deep. <br /> 1.3.3 Discussion of On-Site Septic Tank Repair <br /> The septic repair permit (72-306) was for the addition of a 70 foot long leach line and a 60 foot <br /> long leach line. <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 7 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 2. <br /> Summary of Adjoining Property Septic Permits. <br /> Leach <br /> Tank Size Leach Line Line Seepage Pits, <br /> Direction Address Permit# Type Width x Depth <br /> (Gallons) Quantity Length <br /> (Feet) <br /> (Feet) <br /> North 11121 N.Alpine Rd NF --- --- --- --- --- <br /> 950 Feet 11211 N.Alpine Rd 73-943 New Install 1,200 2 50 Two 2.75 x 25 <br /> North <br /> Responsive ■ Resourceful ■ Reliable 5 <br />