GENERAL43153

• Permit No: C1994082
• IBM Index Class Name: General Documents
• Doc Date: 7/5/1995
• Doc Name: PROPOSED DECISION AND FINDINGS OF COMPLIANCE
• Permit Index Doc Type: FINDINGS
• Media Type: D
• Archive: No

There aze no variances from the requirements of the Rules and
Regulations proposed at this time. Therefore, no specific findings
regarding diversions have been made.
C. Sedimentation Ponds
Sediment ponds to be constructed to treat disturbed azea runoff aze
Ponds 10, 11, 12, 13, and 14. Ponds 10 and 11 will be constructed
during the first permit term. Pond 10 will treat disturbed area runoff
from approximately 385 acres, in addition to approximately 550 acres
of undisturbed azea. Mining disturbance for the first four years of the
permit term will drain to Pond 10. Pond 11 will treat runoff from
approximately 78 disturbed acres. Runoff from roughly 64 undisturbed
acres will also be routed through the pond.
Seneca Coal Company has provided preliminary designs for Pond 11.
Those designs do not currently include a demonstration of
embankment stability required by Rule 4.05.6(11)(k). The permit
application package currently indicates Pond 11 will be constructed
approximately 2400 feet from the nearest pit disturbance, requiring
disturbed area runoff to flow through an otherwise undisturbed
drainage to reach the pond. The permit application package does not
currently explain how and if the pond will be as near as practicable to
the disturbed area, as required by Rule 4.05.6(1)(b). Therefore, the
following stipulation is being added to the Yoast permit,
STIPULATION NO. 5
WTI'HIN 180 DAYS OF PERMIT ISSUANCE, THE APPLICANT
SHALL SUBMIT A TECHNICAL REVISION TO THE YOAST
PERMIT WHICH DEMONSTRATES THAT POND 11 WILL BE
LOCATED AS NEAR AS PRACTICABLE TO THE DISTURBED
AREA, AND THAT THE POND EMBANKMENT WILL HAVE A
MINIMUM STATIC SAFETY FACTOR OF 1.3.
There aze no variances from the requirements of the Rules and
Regulations proposed at this time. Therefore, no specific findings
regarding sedimentation ponds have been made.
D. Acid-forming and Toxic-forming Spoil
The over and interburden material associated with the Wadge and
Wolf Creek coal seams at the Yoast Mine is similar in nature to the
corresponding materials at the neazby Seneca II and Seneca II West
coal mines. Only a minor portion of the spoil generated by the mining
Yoast Mine 23 July 6, 1995