2009-06-15_REPORT - C1992081

• Permit No: C1992081
• IBM Index Class Name: REPORT
• Doc Date: 6/15/2009
• Doc Name: 2008 AHR Review Letter
• From: DRMS
• To: Hayden Gulch Terminal
• Annual Report Year: 2008
• Permit Index Doc Type: Hydrology Report
• Email Name: TAK
• Media Type: D
• Archive: No

Requirement Requirement Requirement Comment
citation complied with ?
es / no
12. Parameters to be Table 13-1 of yes
sampled at surface CDRMS mining
water sites permit C-92-081
13. Filing frequency CDRMS yes
of pond reports regulation
4.05.6(13)
14. Timely filing of CDRMS yes
pond reports regulation
4.05.6(13)
15. Content of pond CDRMS yes
reports regulation
4.05.6(13)
16. Sampling Table 13-2 of yes Dry Creek alluviual water is monitored in
frequency of ground CDRMS mining two wells: HGDAL3 (down-gradient) and
water monitoring wells permit C-92-081 HGDAL4 (u gradient).
17. Parameters to be Table 13-2 of yes
analyzed in ground CDRMS mining
water samples permit C-92-081
18. Basic Standards CWQCC yes The Loadout did not generate significant
for Ground Water regulations amounts of leachates in 2008. CDRMS has
41.4 and 41.5 previously determined ground water points
of compliance are not necessary, based on
the Loadout's lack of potential to negatively
impact ground water quality (memo to
DRMS hydrology file, dated 6/5/08). TDS
of alluvial ground water consistently
exceeds 10,000 mg/l, indicating "Limited
Use and Quality". Leachate originating
from the Loadout would lack sufficient
head to migrate into underlying bedrock,
the low-permeability Lewis Shale. Data
from the two Dry Creek alluviual wells
indicated compliance with the Basic
Standards for ground water.
19. Restoration of CDRMS yes
ground water recharge regulation
to approximate 4.05.11(3)
remmin rate
20. Prevention of CDRMS yes
adverse impacts to regulation
ground water systems 4.05.11
outside the permit area
21. Prevention of CDRMS yes
impacts to ground water regulation
that adversely impact 4.05.11
the ostminin land use