PERMFILE60949

• Permit No: C1981014A
• IBM Index Class Name: Permit File
• Doc Date: 6/9/2003
• Section_Exhibit Name: Exhibit 25 Hydrologic Monitoring Plan
• Media Type: D
• Archive: Yes

5.
D.
IV
collection and will be shipped within 24 hours to a laboratory
for analysis.
Samples will be analyzed for the following parameters:
Suggested Water Duality Parameters*
pH
Conductivity at 25°
Temperature (field)
Bicarbonate (HC0~3)
Total Dissolved Solids
Calcium (Ca'Z)
Chloride (CI-)
Magnesium (Mg'Z)
Ammonia (NH3)
Nitrate -Nitrite
Phosphate (PO"~" as P)
Sodium (Na')
Sulfate (SO-0)
Iron (Fe)
Manganese (Mn)
* Dissolved species concentration only.
Proper sampling and preservation procedures will be followed for each of the
parameters listed above.
4.
Data Processing and keaorting
1. Copies of the field and laboratory data sheets will be sent semi-annually to
the CDMG.
2. Data will be summarized in the annual hydrology report to CDMG.
In-Mine Monitoring (Discontinued with mine closure and sealing in December
2000
A. Monitorino Locations -points of water inflow within active mine workings.
B. SamDliny Freouencv
1. Asemi-annual survey of water inflow to the mine will be conducted.
2. Estimate of the quantity of each source will be made.
3. Field water quality parameters (pH, electrical conductivity and
temperature} will be measured for all significant inflows.
4, Locations of all inflows will be recorded on a mine workings map.
M R-50 5
Revised -June 2003