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COLUMBIA ANALYTICAL SERVICES,INC. <br /> Analytical Report <br /> Client: Shaw Environmental&Infrastructure,Inc. Service Request: L0600004 <br /> Project Name: N. County LF, San Joaquin County 1st Storm Event Date Collected : NA <br /> Project Number : 791288/00005000 Date Received : NA <br /> Sample Matrix : WATER <br /> Inorganic Parameters <br /> Sample Name: Method Blank <br /> Lab Code : L0600004-MB Basis : NA <br /> Test Notes : <br /> Analysis Dilution Date Date Resu <br /> Analyte Units Method PQL MDL Factor Analyzed Extracted Result Note <br /> Bicarbonate as CaCO3 mg/L(ppm) SM 2320B 10 2.2 1 01/10/06 NA ND <br /> Carbonate as CaCO3 mg/L(ppm) SM 2320B 10 2.2 1 01/10/06 NA ND <br /> Chloride mg/L(ppm) 300.0 1 0.09 1 01/05/06 NA 0.1 1 <br /> Nitrate as Nitrogen mg/L(ppm) 300.0 0.2 0.05 1 01/04/06 NA ND <br /> Solids,Total Dissolved(TDS) mg/L(ppm) 160.1 10 3 1 01/09/06 NA ND <br /> Solids,Total Suspended(TSS) mg/L(ppm) 160.2 10 4 1 01/09/06 NA ND <br /> Sulfate mg/L(ppm) 300.0 2 0.1 1 01/05/06 NA ND <br /> J Estimated concentration.The result is less than the PQL but greater than the MDL. <br /> Approved By:_ Date <br /> Rennrt Rv•NKnnA.,..o.. <br />