2021-04-14_PERMIT FILE - C1996084 ‎(8)‎

• Permit No: C1996084
• IBM Index Class Name: Permit File
• Doc Date: 4/14/2021
• Doc Name: page 2.05-46 to 2.05-123
• Section_Exhibit Name: Section 2.05 Operation and Reclamation Plans Part 2
• Media Type: D
• Archive: No

Rule 2: Permits
•
TABLE 2.05.6 -13
LORENCITO CANYON MINE
STOCK POND MONITORING SITES
Site Reason for Monitoring Status
PJC -1 Surface Mine Terminated
Alluvial Wells
Alluvial wells designated for monitoring are listed in Table 2.05.6 -14.
TABLE 2.05.6 -14
LORENCITO CANYON MINE
ALLUVIAL WELL MONITORING SITES
Site
Reason for Monitoring
Status
MWJC -1
Surface Mine
Terminated
MWLC -1
Surface Mine
Terminated
MWLC -2
Surface Mine
Terminated
MWPC -1
Surface Mine
Terminated
MWLO -E
Loadout AVF
Terminated
MWLO -W
Loadout AVF
Terminated
i These alluvial wells were monitored on a semi -annual basis in the second and fourth
quarters for field parameters and annually in the fourth quarter for analytical and
calculated values during final reclamation. These sites required monitoring for
parameters as determined from the initial baseline sampling. To determine these
parameter the standards were compared to the values reported during the baseline period
and those values which exceeded standards or were within 80% of the lowest standards
value were selected. The list of parameters in Table 2.05.6 -15 was deemed adequate to
monitor alluvial wells.
The parameters silver, cyanide, copper, mercury, and nitrate as N (dissolved) were not
included in this list since either the standards are less than the detection limit or no
analyses of these constituents were above the detection limits. Likewise lead (dissolved),
selenium (dissolved), and zinc (dissolved) have been removed from the list.
Monitoring at site MWLO -W was terminated after the surface owner constructed a gravel
quarry west of the loadout location that resulted in the abandonment and excavation of
the well site. Monitoring at site MWPC -1 was terminated as the mine is in final
reclamation and mining related impacts never occurred within the area of influence
affecting site MWPC -l. The mine loadout area received Phase III bond release as a post
mining industrial land use area; therefore, monitoring of MWLO -E was terminated. As
demonstrated by data from the Annual Hydrologic Monitoring Reports and presented in
Table 2.05.17, mining has had no impact on Alluvial Water Resources. Thus the
TR -16 Page 2.05 -105 (Revised 10/27/09)