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Performa Inc. • • <br /> May 7,2003 <br /> Page 8 <br /> ' On May 1, 2003, samples of first ground water were collected from the B-1, the same location of <br /> the March 24, 2003 sample of the 25 foot soil profile boring(B-1) excavated on March 24, 2003. <br /> The exact same boring(B-1) was re-excavated and an additional water sample was remanded <br /> through due chain of custody to Precision Enviro-Tech Analytical laboratory of Stockton where it <br /> was tested for Total Nitrogen and General Minerals. The depth of water was measured at 20 feet. <br /> The following table presents a summary of the ground water quality tests. <br /> ' Table 4. <br /> Summary of the general mineral analytical results. <br /> Constituent Concentration MCL <br /> iTotal Hardness (as CaCO3) 201 <br /> ' Calcium(Ca) 36 <br /> Magnesium(Mg) 27 <br /> Sodium(Na) 138 <br /> Potassium(K) 1.8 <br /> ' Total Cations Value 10.06 <br /> Total Alkalinity(CaCO3) 420 <br /> Hydroxide ND <br /> Carbonate ND <br /> ' Bicarbonate(HCO3) 512 <br /> Sulfate(SO4) 35 <br /> Chloride (Cl) 17 <br /> Phosphate (PO4) 0.2 <br /> Nitrate(NO3) 18 45 <br /> Flouride(F) 0.4 <br /> Total Anions Value 9.91 <br /> pH(Laboratory) 7.7 <br /> Specific Conductance(EC) 880 <br /> UERjO4 <br /> p S�A <br />