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rrA well log for a domestic well on the property south of the subject property illustrates vaned geological strata of clay and sand down to a depth of 145 feet,with a clay layer from 17 to 30 feet. A well log for the on-site Monitoring Well also illustrates a clay layer existing from 19 to 25 feet. Groundwater research in the scientific literature suggests there maybe significant denitrification potential within aquifers or saturated zones composed of a fine (vs. a coarse) soil fraction. SSS§ 2.1 Since the property was part of the former Hayres Chicken Ranch, and since surrounding properties have been intensely farmed for several decades, the probability for nitrate contamination in the underlying groundwater is significant. This was evidenced by the ELF water table analysis. However, nitrate was inexplicably nonexistent in the WLF. A potential rise in the water table elevation may be attributed to the cropland surrounding the property to the south and west. Irrigation recharge can have a significant influence on the underlying and surrounding water table. The critical issue regarding the groundwater elevation is: 1.) There must be sufficient distance between the soil/effluent interface and the highest anticipated depth to groundwater for sufficient treatment of effluent to occur,which is generally accepted to be five feet, and 2.)The water table cannot encroach upon the septic tanks, which may cause buoyancy. NLS§2.2,3.1, SSS§ 4.2 As referenced,water table samples were retrieved from the two borings to groundwater. The tested constituents are illustrated in Table 4. The test results for the ELF show a high nitrate concentration of 159 ppm. Total Dissolved Solids (TDS)were also high at 1640 ppm. TDS has a secondary standard of 500 ppm. Total alkalinity was high at 937 ppm. The test results for the WLF show high an extremely high concentration of TDS at 12,120 ppm. Concentrations of sodium and particularly chloride were also extremely high, as noted below. Surprisingly,nitrate was found to be Below Detectable Limits (BDL), or non-existent. The chemistry for this sample appeared to be so far out of line with what was expected, I had the laboratory re-run the sample,with the same test results. The saltiness of the water table may be attributable to saltwater intrusion from the Delta. However, this TDS concentration is so high that this may be considered implausible. The absence of nitrate is also confounding. It can only be reasonably assumed that the denitrification potential through the soil column and in the water table, or top aquifer, must be ideal. NLS§ 2.3, SSS§ 4.3, 4.4,4.5 As referenced, there is only one known, non-operational well on the subject property. Consequently, no well water sample was sampled and tested. The new well to be drilled will be tested for the constituents listed in the Conditions of Approval Item 3c. Well water with an acceptable nitrate concentration may be unattainable in this location. If the new well is constructed and subsequently tested to have a nitrate concentration over the MCL for nitrate, reverse osmosis filters shall be installed to lower a potential nitrate concentration that exceed the MCL to an acceptable concentration. Additionally, Preston Pipeline Company will supply bottled water for drinking and in the break room/kitchen area(potential cooking purposes) for employees, customers, and lessees. 8 Chesney Consulting