2019-04-25_HYDROLOGY - M1980244

• Permit No: M1980244
• IBM Index Class Name: Hydrology
• Doc Date: 4/25/2019
• From: CC&V
• To: DRMS
• Annual Report Year: 2019
• Report Quarter_Month: 1
• Email Name: TC1
• Media Type: D
• Archive: No

NEWMONT
GOLDCORP
established numeric protection limits for fluoride, manganese, and sulfate. Table 2 below lists
the exceedance for the location and the associated parameters.
Table 2.
Location Sample Date Parameter Value Value NPL(mg/L) Table Stamdard (mg/L)
SGMW-6B 2/27/2019 Fluoride 6.03 2.00 2.00
SGMW-613 2/27/2019 Manganese 6.14 3.00 0.05
SGMW-6B 2/27/2019 Sulfate 897 250 250
As reported on March 20, 2019, CC&V collected first quarter compliance groundwater samples
from monitoring wells CRMW-3B, PGMW-3, GVMW-25, and WCMW-3 on March 4, 2019.
CC&V received the lab report for these analyses on March 19, 2019, and upon review,
determined that CRMW-3B exceeded established numeric protection limits for fluoride, PGMW-
3 exceeded established numeric protection limits for cadmium, copper, fluoride, manganese,
nitrate, nitrite, nitrate+nitrite, pH, sulfate and zinc. GVMW-25 exceeded established numeric
protection limits for copper. Table 3 below lists the exceedance for the location and the
associated parameter.
Table 3.
Location Sample Date Parameter Value NPL(mg/L) Table Standard
(mg/L) (mg/L)
CRMW-313 3/4/2019 Fluoride 2.12 2 2
PGMW-3 3/4/2019 Cadmium 0.012 0.004 0.005
PGMW-3 3/4/2019 Copper 3.65 0.008 0.2
PGMW-3 3/4/2019 Fluoride 3.16 2 2
PGMW-3 3/4/2019 Manganese 12.6 3 0.05
PGMW-3 3/4/2019 Nitrate 11.9 3 10
PGMW-3 3/4/2019 Nitrite 0.069 0.05 1
PGMW-3 3/4/2019 Nitrate+ Nitrite 12 11 10
PGMW-3 3/4/2019 pH 4.69 6—8.5 6.5—8.5
PGMW-3 3/4/2019 Sulfate 534 250 250
PGMW-3 3/4/2019 Zinc 1.68 0.7 2
GVMW-25 3/4/2019 Copper 0.009 0.008 0.2