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Soil Suitability/Nitrate Loading Study Irerracon <br /> Vacant Commercial Property■ Stockton, California <br /> December 7, 2018 ■ Terracon Project No. NA187056 <br /> Based on a review of the historical information, the site appears to have consisted of undeveloped <br /> and/or agricultural land from as early as the 1890s through 1910, was developed with orchards <br /> and/or structure(s) by the 1930s through 1960s, and was developed with a building and vacant <br /> land from the 1970s through 2018. Copies of selected documents are included in Appendix C. <br /> Refer to Section 1.4.2 for further discussion regarding the historical information. <br /> 1.3 Existing and Proposed Septic Tank Usage <br /> 1.3.1 Existing On-Site Septic Tank Usage <br /> At the time of Terracon's field work, there were no septic systems on the site. <br /> 1.3.2 Site Specific Permit History <br /> The following permits were available on the San Joaquin County Environmental Health <br /> Department (EHD) website for the site address of 8200 Highway 99 E. Frontage Road: <br /> Table 2. <br /> Site Specific Permit History. <br /> Leach Seepage <br /> Date Tank Size Leach Line Line Pits/Sumps/ <br /> Address Permit Filter Bed <br /> (Month/Day/Year) (Gallons) Quantity Length <br /> (Feet) (Quantity, <br /> Size) <br /> NEC Foppiano& <br /> 99 Frontage 06/13/72 72647 1,200 1 80 One 25'x 33" <br /> 8200 N.Hwy 99 07/25/86 86-849 --- 1 40 One 25'x 33" <br /> Repair <br /> 8200 N.Hwy 99 09/26/17 SR0078198 <br /> --- --- --- --- <br /> Frontage Destruction <br /> Based on a review of the site specific permits, in 1972, a septic system consisted of a 1,200- <br /> gallon septic tank with an 80 foot long leach line and one 3.3 foot wide by 25 foot deep seepage <br /> pit. In 1986, one 40 foot long leach line and one 25 foot deep seepage pit were added to the <br /> septic system. A permit to destroy the septic system was issued in 2017. <br /> 1.3.3 Discussion of On-Site Septic Tank Repair <br /> Refer to Section 1.3.2. <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 residential properties to the north, vacant land to the east, agricultural land to the south <br /> Responsive ■ Resourceful ■ Reliable 6 <br />