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Soil Suitability/ Nitrate Loading Study 1rerracon <br /> Gribaudo Property ■Acampo, CA <br /> November 12, 2019 ■ Terracon Project No. NA197081 <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 20 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 (Gallons) Quantity Length width x Depth <br /> (Feet) <br /> (Feet) <br /> North 10675 E. Peltier Rd 78-592 Install 1,600 2 60 Two 3.16x25 <br /> North 10707 E. Peltier Rd SR0050174 Install 1,600 3 40 Three 3.0x25 <br /> Northeast 22633 N.Samra SR0035648 Install 1,600 3 40 Three 3.0x25 <br /> Hayer Ln <br /> Northwest 22595 N.Sowles Rd 16677 Install 1.200 2 100 Two 2.75x25 <br /> East 10950 E. Peltier Rd NF --- --- --- I --- --- <br /> South 22000 N.Sowles Rd NF --- --- --- --- --- <br /> 72-513 Repair --- --- Add one 2.75 x <br /> 25 pit <br /> West 10050 E.Peltier Rd <br /> SR0047398 Repair --- --- 40 Add two 3 x 25 <br /> Pits <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 utilize 40 to 100 foot <br /> leach lines with 25 foot deep seepage pits at the end of each leach line. Seepage pit widths range <br /> between 2.75 and 3.16 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 existing three bedroom residence (APN 017- <br /> 260-31)is approximately 420 gallons per day(gpd). There are no septic systems currently located <br /> on APN 017-260-30. Refer to Section 2.3.4 for the wastewater flow calculation. <br /> Responsive■ Resourceful ■ Reliable 6 <br />