2018-11-15_HYDROLOGY - M1980244 ‎(6)‎

• Permit No: M1980244
• IBM Index Class Name: HYDROLOGY
• Doc Date: 11/15/2018
• Doc Name Note: Demonstration of Compliance w/WQCC's Regulation #41 - Basic Standards for GW
• Doc Name: Part 1 of 5
• From: CC&V
• To: DRMS
• Email Name: AME
• Email Name: TC1
• Email Name: MAC
• Email Name: ERR
• Email Name: JPL
• Media Type: D
• Archive: No

5.2.7 Iron
Table 30 presents the summary statistics for iron by well for the Arequa Gulch data.
Table 30. Are ua Gulch iron statistics
CRMW- CRMW- CRMW- CRMW- CRMW- CRMW- CRMW- CRMW- CRMW-
2A 2B 3A 3B 3C 5A 5B 5C 5D
Geomean 065 0.25 0.03 0.16 0.78 N.D. N.D. 0.15 0.11
S.D. 2.30 0.53 0.03 0.51 3.05 0.00 0.12
Max 15.80 2.36 0.12 1.40 11.80 0.15 0.36
Min 0.08 0.07 0.01 0.01 0.24 0.15 0.05
n 46 40 40 42 20 1 7
Reg 41 TVS 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30
CRMW-2A has recorded data above the approved DRMS NPL of 14.0 mg/L.
5.2.8 Lead
Table 31 presents the summary statistics for lead by well for the Arequa Gulch data.
Table 31. Are ua Gulch lead statistics
CRMW- CRMW- CRMW- CRMW- CRMW- CRMW- CRMW- CRMW- CRMW-
2A 2B 3A 3B 3C 5A 5B 5C 5D
Geomean 0.018 0.005 0.001 0.001 N.D N.D. N.D. N.D. 0.001
S.D. 0.010 0.005 0.000 0.000 0.000
Max 0.048 0.023 0.001 0.002 0.001
Min 0.001 0.001 0.001 0.001 0.001
n 44 33 2 8 1
Reg 41 TVS 0.050 0.050 0.050 0.050 0.05 0.05 0.05 0.05 0.050
All recorded lead data in Arequa Gulch is below the Reg 41 value of 0.05 mg/L.
5.2.9 Manganese
Table 32 presents the summary statistics for manganese by well for the Arequa Gulch data.
Table 32. Arequa Gulch manganese statistics.
CRMW- CRMW- CRMW- CRMW- CRMW- CRMW- CRMW- CRMW- CRMW-
2A 2B 3A 3B 3C 5A 5B 5C 5D
Geomean 0.94 0.64 0.24 4.14 1.02 1.11 0.10 0.05 N.D.
S.D. 0.58 0.35 0.44 1.48 1.03 0.00 0.35 0.08
Max 2.40 1.48 2.06 10.40 3.97 1.11 0.67 0.13
Min 0.13 0.21 0.01 0.07 0.21 1.11 0.01 0.02
n 44 39 84 148 20 1 3 2
Reg 41 TVS 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05
Monitor well CRMW-3B has recorded manganese data above the approved DRMS NPL value of 8.1
mg/L.
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