_INSPECTION - C1994082 ‎(46)‎

• Permit No: C1994082
• IBM Index Class Name: INSPECTION
• Doc Name: OSM Inspection Report
• From: OSM
• To: DRMS
• Inspection Date: 7/15/2009
• Email Name: DTM
• Media Type: D
• Archive: No

Yoast Mine Phase 1 bond release, pg. 6
eligible for Phase I bond release and will be excluded. This completed the OSM portion of the
field inspection.
We held a close out meeting July 17th and Mr. Mathews did a thorough job of describing our
observations and the problem areas noted above that need to be repaired prior to DRMS issuing a
proposed Phase I bond release decision. Mr. Mathews also informed the permittee that some
areas would, or likely would,be excluded from this Phase I bond release. Specifically,the
topsoil stockpile located at the base of the substation road junction does not qualify for bond
release. In addition,the upper portion of the YPM-8 channel watershed to the west of the road
will be excluded from this bond release due to ongoing minor alterations and construction
activities of a storm water control runoff structure. The YPM-8 channel itself will also be
excluded pending observation of the effectiveness of erosion control installations following
runoff season. Lastly, the Pond 13 watershed slide area above the temporary road may be
excluded from release. DRMS will revisit the area in August and decide whether to include it in
this bond release prior to submitting it proposed decision.
Everything else that needs to be done includes erosional work as required by the permittee's rill
and gully plan. In particular, some gullies have developed on the landowner's property near the
aspen grove and runoff around a berm that needs to be eliminated has created a deep gully that
needs to be repaired by a track hoe. The permittee also needs to install some water bars to help
control erosion. We also determined that several locations warranted additional monitoring. For
example, some washing has occurred and volcanic rip-rap rock has accumulated in a"stair-step"
kind of feature in the YPM-3-2 channel that runs into Pond 14 and through a fenced shrub plot.
Although the channel appears to be stable, it will need to be monitored. DRMS will follow-up
on these issues during an August inspection. DRMS will also provide a maintenance and repair
list, including options for repair, concerning erosional issues. Another list will include the areas
the permittee needs to monitor prior to applying for Phase II bond release.
Mr. Mathews concluded by noting that a significant amount of progress had been made since
DRMS' last inspection and that the permittee is being proactive in its erosion control efforts.
However,he also reiterated and emphasized that so long as the permittee's rill and gully plan is
substantially being implemented and is on schedule to complete necessary work this year, he
(DBMS) did not anticipate that anything would hold up a proposed bond release decision
notwithstanding any issues found during his follow-up inspection in August. This concluded the
OSM portion of this Phase I bond release inspection.
Please address any questions concerning this report to Howard Strand,Management/Program
Analyst, at hstrand(a�,osmre.gov or to [phone].