2011-05-11_REPORT - C1980005

• Permit No: C1980005
• IBM Index Class Name: Report
• Doc Date: 5/11/2011
• Doc Name: 2010 AHR Review
• From: DRMS
• To: Hayden Gulch Terminal, Inc
• Annual Report Year: 2010
• Permit Index Doc Type: Hydrology Report
• Email Name: JDM
• Media Type: D
• Archive: No

at Seneca II due to the iron value
levels at Alluvial Well SBAL68.
11. Sampling frequency Volume 14, p. 2.04.7-2 YES The report indicates that all
at surface water of CDRMS mining frequencies were met.
permit C-1980-005
12. Parameters to be Volume 14, p. 2.04.7-2 YES
sampled at surface of CDRMS mining
water sites permit C-1980-005
13. Filing frequency of CDRMS regulation YES
pond reports 4.05.9(17)
14. Timely filing of CDRMS regulation YES
pond reports 4.05.9(17)
15. Content of pond CDRMS regulation YES
reports 4.05.9(15)
16. Sampling frequency Volume 14, p. 2.04.7-2 YES Ground water samples are
of ground water of CDRMS mining collected from SBAL68 and SFAL72
monitoring wells permit C-1980-005 on a biannual basis.
17. Parameters to be Volume 14, p. 2.04.7-2 YES All required parameters were
analyzed in ground of CDRMS mining analyzed.
water samples permit C-1980-005
18. Basic Standards for CWQCC regulations YES The Seneca II Mine did not
Ground Water 41.4 and 41.5 generate significant amount of
leachates in 2010. Both
groundwater wells exceeded the
manganese standard (0.2 mg/1) in
2010. As mentioned in the above
item number 8 above, in soils with
a high pH a standard of 10 mg/I
would be more appropriate than
the .2 mg/I. In 2010 neither of the
Seneca II wells displayed a value
higher than 3.5 mg/l. The TDS
trend at well SBAL68 is stable and
do to the recent addition of well
SFAL72 to the monitoring
program, a trend cannot be
determined at this time.
19. Restoration of CDRMS regulation YES
ground recharge to 4.05.12(3)