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Soil Suitability /Nitrate Loading Study 1rerracon <br />ALL STAR HEAVY HAUL & TOWING INCORPORATED Tracy, California <br />July 1, 2022 Terracon Project No. NA217024 <br />Year <br />Source <br />Description <br />2003 <br />Aerial <br />Developed with the existing residence at the eastern portion of the site and a <br />Remaining land use appears similar to previous years. <br />2006 Aerial <br />2010 <br />Aerial <br />Developed with the existing residence at the eastern portion of the site and a <br />Remaining land use appears similar to previous years. <br />2012 Aerial <br />2014 Aerial <br />2015 <br />Topo <br />Additional warehouse added west of existing residence. <br />2016 Aerial <br />2018 <br />Toro <br />Land use appears similar to previous years. <br />2018 Aerial <br />2020 Aerial <br />2021 Topo <br />2021 Aerial <br />Based on a review of the historical information, the site appeared to consist primarily of <br />undeveloped and/or agricultural lands from the 1907 through 1963, with a structure from as early <br />as 1968, developed with residential structures in the 1980s, and existing warehouse building in <br />2016. <br />1.3 Existing and Proposed Septic Tank Usage <br />1.3.1 Existing On -Site Septic Tank Usage <br />Based on the site plan provided by the client, there is one residential septic system currently <br />located on the site. <br />1.3.2 Site Specific Permit History <br />Terracon searched the EHD Public Records website and the following EHD permits associated <br />with the site address(es) were identified. <br />Table 2. <br />Summary of Site -Specific Permits. <br />Responsive ■ Resourceful ■ Reliable 5 <br />Leach <br />Permit # <br />Type I <br />Tank Size <br />Leach Line <br />Line <br />Address <br />Seepage Pits <br />(Year) <br />Location <br />(Gallons) <br />Quantity <br />Length <br />(Feet) <br />SR00850340 <br />--- <br />--- <br />--- <br />26603 S. Hansen Rd <br />Perc test <br />(2022) <br />68-18 <br />1200 <br />2 <br />80 <br />--- <br />26603 S. Hansen Rd <br />Septic Tank <br />(1968) <br />03765 03765 <br />--- <br />-- <br />--- <br />26603 S. Hansen Rd <br />Pump Repair <br />(1980) <br />88-2231 <br />New Well/ <br />--- <br />— <br />--- <br />--- <br />26603 S. Hansen Rd <br />(1988) <br />Replacement <br />88-2569 <br />Pump <br />26603 S. Hansen Rd <br />(1988) <br />Installation <br />SR0001757 <br />Repair/ <br />1200 <br />1 <br />100 <br />1 <br />26603 S. Hansen Rd <br />(1993) <br />Addition <br />Responsive ■ Resourceful ■ Reliable 5 <br />