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Soil Suitability/Nitrate Loading Study Irerracon <br /> Gribaudo Property ■Acampo, CA <br /> November 12, 2019 ■ Terracon Project No. NA197081 <br /> Table 1. <br /> Historical Topographic Maps and Aerial Photographs <br /> Direction Description <br /> Undeveloped land(1894-1908); developed multiple structures at the northwestern corner, <br /> the remaining land is used for row crops (1937); land depicted as undeveloped with two <br /> residential structures along Peltier Road (1939-1942); land depicted / developed with <br /> three structures or well features near the northwestern corner, the remainder of the site <br /> is depicted as vacant land (1953); existing residence, and existing Shop 1 and Shop 2, <br /> Site the remainder is used for row crops (1957-1963); land depicted / developed with three <br /> structures or well features near the northwestern corner(1968); remainder planted with a <br /> vineyard (1972); land depicted/developed with four structures or well features near the <br /> northwestern corner, developed with Shop 3 (1975-1993); developed with the existing <br /> vineyard layout, a portion of the vineyard southwest of the residence is removed (2006- <br /> 2010). <br /> Based on a review of the historical information, consisted of undeveloped land in the late 1890s <br /> and early 1900s and was developed in phases with rural structures and agricultural row crops <br /> from as early as the 1930s through 1990s with residential and agricultural land use through the <br /> present. <br /> 1.3 Existing and Proposed Septic Tank Usage <br /> 1.3.1 Existing On-Site Septic Tank Usage <br /> Based on a review of the EHD Public Records website, no septic permits were found for the site. <br /> According to the SSCR and interviews with Mr. Zachary Taylor, one septic system is located west <br /> of the residence(size unknown). Mr. Taylor indicated a sump located in the residence basement <br /> discharges to the septic system as needed. Mr. Taylor indicated a former breakroom / kitchen <br /> building and detached restroom building, which are no longer in use, are connected to the existing <br /> septic system. At the issuance of the SSCR, no concerns relative to the existing septic system <br /> were reported. <br /> 1.3.2 Site Specific Permit History <br /> Two well permits were available in the online records for the site address. Permit No. 73-151 was <br /> issued for a new irrigation well in 1973. Permit No. 87-2883 was issued in 1987 for installation of <br /> a domestic well. It is uncertain if the well is associated with the site as the corresponding site <br /> diagram indicated the location of the well near Tully Road, which is northeast of the site. The <br /> documents associated with both permits are included in Appendix C. <br /> 1.3.3 Discussion of On-Site Septic Tank Repair <br /> No septic permits were found for the site address. <br /> Responsive■ Resourceful ■ Reliable 5 <br />