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fA TRODUCTION Soil Suitability Study was completed for this project on August 31, 2001. a projectginally consisted of the subdivision of three Parcels: P cel 1 to consist o 52.91 acres, Parcelo consist of 4.13± acres and the "Remainder Parcel" esignated Remai er) to consist of 240.6±acres. For this project, Parcel "A" (formerly Parce ) is now to c silt of 40.281 acres. The San Joaquin County Environmental Health Department(EHD)has subsequently determined that an Update and Amendment to the original Soil Suitability Study must be completed, with a percolation test conducted on proposed Parcel "A." The EHD requires no percolation testing on Parcel "2"or the Designated Remainder Parcel. No analytical testing of the on-site domestic wells was also required. Consequently, this Soil Suitability Study Addendum presents the results of percolation testing for Parcel "A." i" The new Parcel Map for this project is found in Appendix A at a sca a of 1" = 150'. This Parcel Map has been produced by the engineering firm of MCR Engineerm , Inc., and was used to denote the percolation test location on Parcel "A." Since it is the policy of the EHD to have septic system disposal fields installed within 100 feet of percolation tests conducted for a given Parcel, the red lines on the Parcel Map represent a 100- foot radius from the perc test in relation to the new Parcel boundaries. SUBSURFACE SOIL STRUCTURE The percolation test boring was hand-drilled with a 4.5 inch O.D. soil auger. Soil samples from the auger cuttings were obtained from this boring for characterization. A field log-of-boring is found on the EHD Perc Test Field Form, located in Appendix C. Soil characteristics are described using the Unified Soil Classification System(USCS). As denoted on the log of boring, the surface soil characteristics reveal a highly organic matter soil in the top six inches due to the alfalfa planted over the entire property area. Below this six-inch depth, is a lean dark brown clay with some soil fracturing down to 30 inches. From 30 inches to the test depth of 36 inches is a light tan silty fine sand with a fair degree of permeability. PERCOLATION TESTING On June 16, 2008, the perc test boring was drilled in the location on Parcel "A"as denoted on the MCR Engineering Parcel Map. Although there is no currently proposal to build on this Parcel,this location was chosen so as to not interfere with the ongoing alfalfa farming operations. I Page -1- Chesney Consulting