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COLUMBIA ANALYTICAL SERVICES, INC. <br /> Analytical Report <br /> Client: EMCON Associates Date Received: 07/23/91 <br /> Project: North County/939-02.31 Work Order : SJ91-1031 <br /> Sample Matrix: Water <br /> Inorganic Parameters <br /> and Metals <br /> mg/L (ppm) <br /> Sample Name: 5-4 <br /> Date Sampled: 07/22/91 07/22/91 07/22/91 <br /> AnalAnal3de Mtjbgd MR1 <br /> Iron, Dissolved 7380 0.05 0.66 1.4 4.6 <br /> Manganese, Total 7460 0.05 0.07 0.30 0.44 <br /> Chloride 9252 3.0 18. 15. 22. <br /> Hardness 130.2 3.0 120. 120. 150. <br /> Nitrogen, Nitrate 9200 0.1 ND ND ND <br /> Solids, Total Dissolved (TDS) 160.1 10 300. 320. 370. <br /> Sulfate 9038 8.0 ND ND ND <br /> MRL Method Reporting Limit <br /> ND None Detected at or above the method reporting limit <br /> Approved by Date f <br /> 3 <br /> 1921 Ringwood Avenue • Son Jose. California 95131 • Telephone 408/437-2400 9 Fox 408/437.9356 <br />