2008-07-30_HYDROLOGY - M1999002

• Permit No: M1999002
• IBM Index Class Name: HYDROLOGY
• Doc Date: 7/30/2008
• Doc Name: 31st quarterly report
• From: American Soda, LLP
• To: DRMS
• Email Name: SSS
• Media Type: D
• Archive: No

2
operational statistics are calculated for all data prior to the reporting period.
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 dissolved sodium value slightly above the
calculated limits during the sample period.
Analysis of the data collected in the 31St Quarter shows one data point for
dissolved sodium slightly elevated above the EWI indicator at Alluvial well 21-5.
The sample, collected in June 2008, indicates a value for dissolved sodium of
517 mg/L. The calculated EWI for this constituent at this monitoring point is 498
mg/L, a difference of 19 mg/L. The baseline mean value for dissolved sodium is
443 mg/L computed from 15 baseline samples. The operational mean value
determined from 65 total samples is 468 mg/L. The maximum value observed in
the baseline program was 456 mg/L. The value of dissolved sodium at alluvial
well 21-5 has exceeded the EWI indicator five times before during the period of
Well 21-5 (Alluvial Completion)
Water Elevation and Dissolved Sodium
550 00 C, r 6040
N ,
525 Early Warning Indicator = 498 m g/L Qo LO Ln
6039
to
500 6038
J '
475
450 C' a 6037
425 ?U) I c 6036
0 400 6035
N
375 ; 6034
350 Baseline a 6033
_y 325
0 300 Temporary 6032
Suspension 6031
275 Operational
250 - - 6030
M O O O O O •- N N N N M M M M Q V d (O CD f` CO
61 O_ O O O O_ O O O O O O O O O O O O O O O O O O O O O
LD
in 00 CO N e '-
O N O N O N N N N N N N r a0 00 n 6? t0
N O
r O V r O V r O R O .-- R i.- O- '7 O c t0 ?D
Date
I I-W Water Elevation 0 Sodium, dissolved
Sodium Early Warning Indicator