2007-02-02_HYDROLOGY - M2004078

• Permit No: M2004078
• IBM Index Class Name: HYDROLOGY
• Doc Date: 2/2/2007
• Doc Name: Draft water quality baseline report ‎(part 1)‎
• From: Brad L Hagen
• To: DRMS
• Email Name: CBM
• Media Type: D
• Archive: No

•
Mercury
Wel ls (CRMW) Site/
01 02 04 05 06 07 09 16 40 41 42 Grou
Oct-05 0.0004 U 0.0002 ----- U U ----- ----- 0.0004 0.0004 ----- 0.0002
Nov-05 U ---- U ---- U ---- ---- ---- ---- U ---- 0.0000
Dec-05 U ---- ---- ---- ---- ---- ----- ----- ---- ---- ----- 0.0000
Apr-06 U ---- U ---- U ---- ----- ----- ---- U ----- 0.0000
Jul-06 0.00013 0.00012 0.00011 ---- 0.00021 0.00024 ----- ----- 0.00012 U ----- 0.0001
Oct-06 U ---- U ---- U ---- ---- ---- ---- U ---- 0.0000
Average 0.0001 0.0001 0.0001 ---- 0.0000 0.0001 ---- ---- 0.0003 0.0001 ---- 0.0001
Stnd Dev. 0.0002 0.0001 0.0001 ---- 0.0001 0.0002 ---- ---- 0.0002 0.0002 ---- 0.0001
Baseline 0.0002 0.0001 0.0002 ---- 0.0001 0.0003 ---- ---- 0.0005 0.0003 ---- 0.0002
The average mercury level for the entire site is 0.0001 mg/L with a standard deviation of 0.0001. Based on the
groundwater sampling plan approved by the DMG, a site wide average may be used plus 1 standard deviation to
establish background levels. This will establish a site wide baseline mercury concentration level of 0.0002 mg/L.
3.2 Secondary Drinkin_g Wafer Standards
Secondary drinking water parameters tested for include (iron, sulfate, total dissolved solids, pH, and chloride). Out of
these five parameters, iron, sulfate, and total dissolved solids exceeded Colorado's Secondary Drinking Water Standards
(SDWS) at least one time during the sampling period.
3.2.1 Iron
During the November and December 2005 sampling events dissolved iron was determined and during the October 2005,
April, July, and October, 2006 sampling events total iron was determined. The SDWS concentrations were exceeded in
all wells for each sampling event from October 2005 to October 2006. Concentration levels ranged from 0.51 to 420
mg/L. April 2006 iron levels were relatively higher than any of the other sampling events. The average concentration
level of the dissolved iron from November and December 2005 is 0.67 mg/L. This concentration level is 0.37 mg/L
higher than the SDWS. No spatial or temporal.trends are apparent in the iron concentrations besides the relatively
higher April 2006 concentrations.
Iron
•
We lls (CRM W) Site/
01 02 04 05 06 07 09 16 40 41 42 Grou
Oct-05 10.33 24.56 1.721 ----- 7.427 4.566 ----- ----- 0.871 7.379 ----- 8.12
Nov-05 0.66 0.79 0.66 0.87 0.63 0.57 0.85 0.72 0.51 0.65 0.7 0.69
Dec-05 0.72 0.68 0.68 ---- 0.63 0.63 ----- ----- 0.51 0.74 ----- 0.66
Apr-06 65 76 420 ---- 58 110 ----- ----- 280 43 ----- 150.29
Jul-06 28 55 13 ---- 33 75 ----- ----- 48 19 ----- 38.71
Oct-06 32 23 16 69 37 73 5.5 55 130 8.2 8.9 41.60
Average 22.79 30.01 75.34 34.94 22.78 43.96 3.18 27.86 76.65 13.16 ---- 36.99
Stnd Dev. 24.60 30.11 168.98 48.18 23.51 47.92 3.29 38.38 111.67 16.08 ---- 73.02
Baseline 47.4 60.1 244 83.1 46.3 91.9 6.5 66.2 188 29.2 0.0 110
Annual 2006 Sampling Event -Lupton Lakes -5- January 2007