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Table 1. Result of Quarterly Monitoring, GCC Rio Grande, Inc. Red Rock Plant and Limestone Mine. Sampling conducted March 25, <br />2008. - Continued <br />RADIOCHEMISTRY <br />Gross Al ha SM 7110B Ci/L 7.1 +/-2.5 9.0 +/-1.6 -7-2+-/--55 48+/-2 41 +/-5 34+/-4 <br />Gross Beta SM 7110B Ci/L 0.0+/-2.8 1.1 +/-1.1 34+/-3 48+/-l 93+/-4 72+/-4 <br />Radium 226 SM 7500 Ra-B Ci/L 1.9+/-0.6 1.1 +/-0.6 2.2+/-0.9 12+/-2 12+/-l 13+/-2 <br />Radium 228 EPA Ra-05 Ci/L 3.0+/-0.9 0.2+/-0.7 9.3+/-1.3 33+/-2 33+/2 33+/-2 <br />Total Solids EPA 160.3 m /L 1,510 1,940 3,580 649 632 609 <br />FIELD PARAMETERS <br />Ph Probe pH 7.30 7.38 7.17 7.50 NC NC <br />Conductivity Probe us/Cm 1,610 2,190 2,690 990 NC NC <br />Temperature Probe °C 9.0 8.8 11.7 21.2 NC NC <br />Notes - Analyses performed by Evergreen Analytical. Radiochemistry sub-contracted to Hazen Research. Asbestos analysis sub- <br />contracted to Reservoirs Environmental. NC = Not collected. <br />3 of 3