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Cal Water Service water analyses for years 2012-2014, 2015 and 2015-2016 are found in 7AppendixC. All tested constituents (except for TOC in 2014 and 2015) were found to be in compliThe following Table summarizes and illustrates the nitrate concentrations for the referenc <br /> Cal Water uses both surface water, where concentrations of nitrate would be low, and groundwater <br /> where nitrate concentrations can be high, for water supplies and can therefore mix waters to <br /> maintain compliance. The percentage of each source is unknown. <br /> TABLE 1 <br /> NITRATE YEAR(S) UNIT MCL RANGE AVERAGE <br /> TESTED (ND=Non Detect) <br /> Nitrate 2015-2016 ppm 10 ND-8.83 2.51 ppm <br /> (As Nitrogen) <br /> Nitrate 2015 ppm 10 ND-9.6 2.70 ppm <br /> (As Nitrogen) <br /> Nitrate 2012-2014 ppm 45 ND-38 17.0 ppm <br /> (As Nitrate) <br /> Regarding existing and/or potential shallow groundwater contamination,the probability for nitrate <br /> impacts to the underlying the groundwater can be considered significant due to the on-site and <br /> surrounding septic systems, and more pervasively from upgradient agricultural land that has been <br /> in production for several decades. <br /> SSS§ 5.0 SOIL PROFILE INFORMATION <br /> Soil profile information is thoroughly covered in the first three pages of the Phase I Report. The <br /> Appendices of the Phase I Report contains the supporting documents requested by EHD in this <br /> Section. <br /> SSS§ 6.0 PERCOLATION TEST INFORMATION <br /> Extensive permeability testing was conducted in what was initially to be the proposed location of <br /> the disposal area(commonly referred to as a leachfield), found on Pages 3 and 4 of the Phase I <br /> Report. After all testing had been completed, it was subsequently decided by the project <br /> engineering firm of Barghausen Engineering to switch the stormwater pond location with the <br /> leachfield location. Since these two structures are adjacent to each other, the test results are <br /> applicable for the new leachfield location. <br /> Page 3 of 11 <br /> Chesney Consulting <br />