2008-07-16_REVISION - C1980004 ‎(3)‎

• Permit No: C1980004
• IBM Index Class Name: REVISION
• Doc Date: 7/16/2008
• Doc Name: Adequacy Response Review
• From: DRMS
• To: J.E. Stover & Associates, Inc
• Type & Sequence: TR16
• Email Name: MPB
• Media Type: D
• Archive: No

Mr. Jim Stover, P.E.
July 16, 2008
Page 8
The operator's response referenced revised Appendix N, which they state
demonstrates that the water quality of East Salt Creek will not be adversely
impacted. Their response also addresses DOW concerns with the sediment pond,
and indicates that lining of the sediment pond is not warranted. Further, the
operator agrees to realign the BLM Drift Fence and the current design provides
for a 5:1 ramp on the east side of the sediment pond that could be used by wildlife
as an escape.
The Division will forward the operator's response and amended Appendix N
to DOW for their review.
Rule 2 05 6(3) Protection of the Hydrological Balance
53. Item Resolved.
54. Item Resolved.
55. Item Resolved. However, the operator chose not to amend the Appendix N tables
as suggested.
56. Item Resolved.
57. The operator was requested to add a discussion of the pond drainage and sediment
pond discharge to the PHC analysis in Appendix N. Given the close proximity of
the proposed pond to East Salt Creek, the operator was also asked to include an
assessment of the need for installation of a protective clay liner in the pond, and
include such design modification as appropriate. The operator modified
Appendix N to include a discussion of the existing sediment pond with regard to
infrequent discharge and low conductivity, and concluded that the impact of the
sediment pond is disregarded.
Further PHC analysis and modifications to Appendix N may be required,
pending resolution of Item #52 (see above) regarding DOW's comment letter
concerning the quality of water discharged from the pond, potential for
leaching contaminates into the ground water, and the potential need for a
pond liner.
58. The Division noted that the proposed sediment pond will be located within 100
feet of a stream with a drainage area of greater than 1 square mile (East Salt
Creek). As such, the provisions of Rule 4.05.18 (Stream Buffer Zones) apply.
Operator was requested to provide narrative addressing compliance with
4.05.18(a) and (b) and to delineate the East Salt Creek buffer zone on Figure 2.2-
3.
Item Resolved. The operator provided appropriate narrative in the final
paragraph on page 2-42, and properly delineated the stream buffer zone on Figure