2014-05-30_REPORT - C1994082

• Permit No: C1994082
• IBM Index Class Name: Report
• Doc Date: 5/30/2014
• From: DRMS
• To: Seneca Coal Company
• Annual Report Year: 2013
• Permit Index Doc Type: Hydrology Report
• Email Name: JHB
• Email Name: DIH
• Media Type: D
• Archive: No

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not NPDES permit limit exceedances. The permit limit for
outfall 013 for selenium is to "Report" only. Outfall 013 has a
NPDES Compliance Schedule to meet the selenium limit by
December 31, 2015.
10. Interim Narrative
CWQCC regulation 41
The manganese standard was exceeded one time Based on
Standard for Ground Water
CWQCC reg. 41, the standard of 0.2 mg /1, applies to plants
grown in acidic soils ( <6.0 pH). In alkaline soils, as found
throughout the Youast and Seneca II W region, the EPA
standard would be 10 mg /1. The maximum manganese value
observed at any surface site was .442 mg /1.
It was determined that bed rock groundwater points of
compliance are unwarranted at the Yoast Mine. Well SGAL70
serves as the Yoast Mine's Grassy Creek Alluvial ground water
point of compliance and well YSAL3 serves as the alluvial
ground water point of compliance for Sage Creek. Ambient
values for this site were below the Reg. 41 standards during
the 2013 water year.
11. Sampling frequency at
Tab 15, Table 15 -9 of
The report indicates that all frequencies were met.
surface water
CDRMS mining permit C-
1994 -082
12. Parameters to be
Tab 15, Table 15 -4 and
Parameters to be sampled are conductivity (umhos /cm), pH
sampled at surface water
15 -5 of CDRMS mining
(units), temperature (C), total recoverable iron (mg /1),
sites
permit C- 1994 -082
dissolved manganese (mg /1), total mercury (ug /1), dissolved
nitrate (mg /1), dissolved nitrite (mg /1), total ammonia (mg /1),
dissolved selenium (ug /1), dissolved sulfate (mg /1), total
sulfide (mg /1), total suspended solids (mg /1) and total
dissolved solids (mg /1). All required parameters were
analyzed. All parameters were met.
13. Filing frequency of pond
CDRMS regulation
The sediment ponds associated with C- 1994 -082 include 010,
reports
4.05.9(17)
011, 011A, 012, 012A, 013, and 014. Quarterly pond
inspections were conducted within the appropriate quarter.
14. Timely filing of pond
CDRMS regulation
Quarterly pond inspection reports were submitted and
reports
4.05.9(17)
received by the Division within an appropriate timeframe.
15. Content of pond reports
CDRMS regulation
All required information was addressed on quarterly
4.05.9(15)
sediment pond inspection in water year 2013.
16. Sampling frequency of
Tab 15, Table 15 -8 of
Ground water samples are collected from YSAL1, YSAL3,
ground water monitoring
CDRMS mining permit C-
YAAL14, YGAL16, YOV30, YW30 YWU30, YWC33, YWCU33,
wells
1994 -082
YTM32, and SGAL70 and SFAL72 on an annual basis.
17. Parameters to be
Tab 15, Table 15 -4 of
Parameters to be sampled are conductivity (umhos /cm), pH
analyzed in ground water
CDRMS mining permit C-
(units), temperature (C), dissolved iron (mg /1), dissolved