2010-01-28_REPORT - M1999002

• Permit No: M1999002
• IBM Index Class Name: REPORT
• Doc Date: 1/28/2010
• Doc Name: 37th quarterly ground water monitoring report
• From: American Soda, LLP
• To: DRMS
• Email Name: THM
• Media Type: D
• Archive: No

2
also regulatory standards and statistics are shown for comparison and,
additionally, baseline and operational statistics are calculated for all data prior to
the reporting period. Colorado Division of Reclamation and Mine Safety
(CDRMS) calculated Numeric Protective Levels (NPL) and Early Warning
Indicators (EWI) are shown for each constituent at each well where these
statistical values apply. Comparison of the data values with the Early Warning
Indicators (EWI) and the Numeric Protective Levels (NPL) indicates one
conductivity value flagged above the calculated limits during the current report
period.
Analysis of the data collected in the 37th Quarter shows one data point for
conductivity elevated above the NPL at lower aquifer B Groove well 21-313, a
point of compliance sampling location. The sample, collected in November 2009,
was reported with a value for conductivity of 43,000 pmhos/cm. The calculated
NPL for this constituent at this monitoring point is 41,968.72 pmhos/cm, a
Well 21-313 (B Groove at Point of Compliance)
Water Elevation and Conductivity
Numeric Protective Level =41,968.72 umhoslcm ; 6084
46000

-- 41000 , 6082
y 36000 ° ° ro 6080

E 31000 M
(n M(?, C) Cl)
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o
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o ; Temporary 6072
6000 ; Operational CD Suspension
6070
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Date
Water Bevation --O---Cond @ 25C Conductivity Numeric Protective L evel