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

5.1.8 Lead
Table 12 presents the summary statistics for lead by well for the Squaw Gulch data.
Table 12. Squaw Gulch lead statistics.
SGMW- SGMW- SGMW- SGMW- SGMW- SGMW- SGMW- SGMW-
IA I 2A 3B 4A 4B 6B 7B
Geomean 0.009 0.001 0.003 0.002 N.D. N.D. 0.002 N.D.
S.D. 0.000 0.000 0.002 0.001 0.002
Max 0.009 0.001 0.006 0.004 0.005
Min 0.009 0.001 1 0.001 1 0.001 1 1 0.001
N 1 1 6 3 2
Reg 41 TVS 0.050 0.050 0.050 1 0.050 1 0.050 1 0.050 0.050 0.050
All values recorded within the Squaw Gulch drainage for lead are below the Reg 41 value of 0.05 mg/L.
5.1.9 Manganese
Table 13 presents the summary statistics for manganese by well for the Squaw Gulch data.
Table 13. S uaw Gulch manganese statistics
SGMW- SGMW- SGMW- SGMW- SGMW- SGMW- SGMW- SGMW-
IA 1B 2A 3B 4A 4B 6B 7B
Geomean 1.12 0.01 0.44 1.19 2.64 0.44 5.48 0.05
S.D. 0.00 0.05 0.00 12.41 1.67 0.38 1.53 0.03
Max 1.12 0.11 0.44 49.00 5.04 1.38 9.15 0.08
Min 1.12 0.01 0.44 0.01 0.63 0.15 2.78 0.03
n 1 4 1 67 4 7 17 2
Reg 41 TVS 1 0.05 1 0.05 1 0.05 0.05 0.05 0.05 0.05 0.05
Monitoring wells SGMW-3B, SGMW-4A, and SGMW-6B have recorded values above the approved
DRMS NPL of 3.0 mg/L.
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