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Table 1. Result of Quarterly Monitoring, GCC Rio Grande, Inc. Red Rock Plant and Limestone Mine. Sampling conducted July 10, <br />2008. - Continued <br />Anal to Method Units MW-002 MW-003 MW-004 Du -01 <br />RADIOCHEMISTRY <br />Gross Alpha <br />Gross Beta <br />Radium 226 <br />Radium 228 <br />Total Solids SM 7110B <br />SM 7110B <br />SM 7500 Ra-B <br />EPA Ra-05 <br />EPA 160.3 Ci/L <br />Ci/L <br />Ci/L <br />Ci/L <br />m /L 15+/-2 <br />11 +/-2 <br />0.8+/-0.6 <br />2.2+/-0.8 <br />2,990 10+/-3 <br />3.9+/-2.2 <br />1.3 +/-0.4 <br />0.6+/-0.7 <br />2,090 37+/-5 <br />6.4+/-3.1 <br />1.3+/-0.7 <br />3.1 +/-0.9 <br />2,670 24+/-4 <br />19+/-3 <br />3.4+/-1.1 <br />1.6+/-0.8 <br />3,520 <br />FIELD PARAMETERS <br />Ph Probe pH 7.28 7.04 7.11 -- <br />Conductive Probe us/Cm 1,265 2,200 2,350 <br />Temperature Probe °C 12.7 14.8 13.4 -- <br />Notes - Analyses performed by Evergreen Analytical. Radiochemistry sub-contracted to Hazen Research. NC = Not collected. <br />3 of 3