2009-01-30_HYDROLOGY - M2002004

• Permit No: M2002004
• IBM Index Class Name: HYDROLOGY
• Doc Date: 1/30/2009
• Doc Name: Second Half, 2008 Groundwater Monitoring Report
• From: GCC Rio Grande, Inc.
• To: DRMS
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Table 1. Result of Second Half 2008 Monitoring, GCC Rio Grande, Inc. Red Rock Plant and Limestone Mine. Sampling conducted
November 6, 2008. - Continued
Anal a Method Units MW-002 MW-003 MW-004 Du -01 EB-01
GENERAL CHEMISTRY
Total Alkalinity SM2320B m /L 310 443 375 318 <0.50
Bicarbonate SM2320B m /L 310 443 375 318 <0.50
Carbonate SM2320B m /L <5.0 <5.0 <5.0 <5.0 <0.50
Chloride E300.0 m /L 39.2 69.3 39.4 39.2 NA
Fluoride SM4500F-C m /L 0.62 1.0 0.81 0.63 NA
Sulfate E300.0 mg/L_ 814 1,210 1,350 815 NA

Ammonia as SM4500-
NH3 mg/L <0.80 <0.80 <0.80 <0.80 NA
Nitrite as E300.0 m /L <0.12 <0.12 <0.12 <0.12 NA
Nitrate as N E300.0 m /L <0.09 0.224 5.0
<0.09
NA
NA
Total Cations Calculated Me /L 22.45 35.65 37.17 22.5 NA
Total Anions Calculated Me /L 24.25 36.01 37.07 24.43 NA
Cation-Anion Balance Calculated % Diff 3.86 0.51 0.13 4.01 NA
NA
Total Hardness Calculated mg/L as CaCOs 850 1,200 1,300 850 NA
Total dissolved solids SM 2540C m /L 1,820 2,440 2,560 1,570 NA
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