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M. J. SCHIFF & ASSOCIATES, INC. <br />Consulting Corrosion Engineers - Since 1959 1291 North Indian Hill Boulevard <br />Claremont, California 91711-3897 <br />Phone 909-626-0967 <br />FAX 909-621-1419 <br />E-mail SCHIFFCORR@AOL.COM <br />Table 1 - Laboratory Tests on Soil Samples Page 1 of 1 <br />Santa Ana Police Department Building, Santa Ana, California <br />Your #70131-7-0261.0001, MJS&A #97192 <br />June 25,1997 <br />Sample ID B-1 B-2A <br />@ 3.5'@ 3.5' <br />silty sandySoil Type <br />sand Silt <br />Resistivity Units <br />as-received ohnn-cnn 23,500 7,700 <br />saturated ohm-cm 4,750 3,500 <br />pH 6.5 6.4 <br />Electrical <br />Conductivity mS/cm 0.10 0.14 <br />Chemical Analyses <br />Cations <br />calcium Ca2+ mg/kg 32 88 <br />magnesium Mg2. mg/kg 12 17 <br />sodium Na" mg/kg 45 175 <br />Anions <br />carbonate C32- mg/kg ND ND <br />bicarbonate HCO/- mg/kg 85 281 <br />chloride Cll. mg/kg 32 273 <br />sulfate SO42- mg/kg 108 54 <br />Other Tests <br />sulfide SZ. qual na na <br />Redox mv na na <br />ammonium NH4 ' mg/kg na na <br />nitrate NOj mg/kg na na <br />Electrical conductivity in millisiemens/cm and chemical analysis are of a 1:5 soil-to-water extract. <br />mg/kg = milligrams per kilogram (parts per million) of dry soil. <br />Redox = oxidation-reduction potential in millivolts <br />ND = not detected <br />na = not analyzed <br />docs97\97192.xls <br />CORROSION AND CATHODIC PROTECTION ENGINEERING SERVICES <br />PLANS AND SPECIFICATIONS ' FAILURE ANALYSIS ' EXPERT WITNESS ' CORROSIVITY AND DAMAGE ASSESSMENTS