2012-02-16_HYDROLOGY - M2002004

• Permit No: M2002004
• IBM Index Class Name: HYDROLOGY
• Doc Date: 2/16/2012
• Doc Name: Second Half, 2011 Groundwater Monitoring Report
• From: GCC Rio Grande, Inc.
• To: DRMS
• Permit Index Doc Type: Hydrology Report
• Email Name: TC1
• Media Type: D
• Archive: No

Analyte
Method
Method
Units
MW -002
MW -003
MW -004
DUP -01
GENERAL CHEMISTRY
RADIOCHEMISTRY
E300.0
mg /L
930
1,610
1,410
936
<0.50
Total Dissolved Solids
(IDS) *
Radium 226 **
mg/L
g
SM 7500 Ra -B
pCi /L
1.4 +/-
0.6
1.3 +/- 0.6
3.8 +/-
1.2
1.5
+/-
0.8
Radium 228 **
EPA Ra -05
pCi /L
2.5 +/-
0.8
0.8 +/ -0.7
9.0 +/-
1.1
1.6
+/-
0.7
FIELD PARAMETERS
pH
Probe
pH
7.23
6.73
7.04
--
Conductivity
Probe
us /Cm
2,029
3,879
2,860
--
Temperature
Probe
°C
15.1
NM
15.75
--
Analyte
Method
Units
MW -002
MW -003
MW -004
DUP -01
I EB -01
GENERAL CHEMISTRY
Sulfate *
E300.0
mg /L
930
1,610
1,410
936
<0.50
Total Dissolved Solids
(IDS) *
SM 2540C
mg/L
g
1,760
3,060
2,640
1,740
<10
Table 1. Result of Semi - Annual Monitoring, GCC Rio Grande, Inc., Pueblo Cement Plant. Sampling conducted October 13,
2011.
* DRMS Numeric Standards for Sulfate and TDS are 1,950 mg/L and 2,630 mg/L, respectively.
Notes — TDS has a secondary standard of 500 mg/L. Sulfate has a secondary standard of 250 mg/L. All TDS and sulfate results exceed the
secondary standards. Shaded results for TDS indicate exceedence of DRMS Numeric Protection Level.
NM — Not measured, as a reliable groundwater temperature could not be determined based on the small volume of purge water available.
** DRMS Numeric Standards for Radium 226 and Radium 228 are 23.5 pCi/L and 12.3 pCi/L mg/L, respectively.
Notes — Sulfate and TDS analyses performed by Accutest Laboratory- Wheatridge, Colorado.
Radiochemistry sub - contracted to Hazen Research — Golden, Colorado.
pCi/L = picoCuries per liter, mg/L = milligrams per liter, us /Cm = microsiemens per centimeter
DUP -01 = Blind duplicate of primary groundwater sample MW -002