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Existing and Proposed Septic Tank Usage <br /> Existing Septic System <br /> One septic system is located on the Site, according to the Tentative Parcel Map (Wong <br /> Engineers, 2013). <br /> Proposed Septic System <br /> According to Mr. Chiappe, no new construction is planned for the Site. However, <br /> County regulations permit a primary residence and second dwelling unit to be placed on <br /> Parcel 2, and a second dwelling unit to be placed on Parcel 1, at some point in the <br /> future. Any new residences would utilize new septic systems. <br /> On-Site Septic Permit History <br /> No permits related to septic systems for the Site were identified at the San Joaquin <br /> County Environmental Health Department. <br /> Existing Septic Tank Usage in the Vicinity <br /> To estimate the existing septic system usage in the area, our office counted septic <br /> systems that exist within approximately four square miles surrounding the property. <br /> Aerial imagery from GoogleEarthTM was used. Each building cluster on the photograph <br /> was assumed to have one septic system. Using this method, it is estimated that 21 or <br /> more septic systems per square mile are present in the immediate vicinity of the Site. <br /> The general area consists of orchards and agricultural land, with scattered rural <br /> residences. The community of Farmington is located one-half mile to the east, <br /> Farmington accounts for the majority of the septic systems counted. <br /> Septic Permit History in the Vicinity <br /> Based on a recent review of septic permits on file at the San Joaquin County <br /> Environmental Health Department for nearby properties, the septic systems in the area ' II <br /> utilize leach lines, leach lines with seepage pits, or leach lines with sumps. The septic (36'3 J <br /> permits can be found in Appendix 4 of this report. <br /> Expected On-Site Maximum Septic Tank Usage <br /> Maximum expected septic usage on the Site would be from the existing and any future <br /> residential uses. No construction is planned at this time. Septic system design should 0 <br /> be based on the On-Site Wastewater Disposal Standards (2003) or other engineering <br /> recommendations. <br /> LOGE 1307 Page 2 <br />