PERMFILE46723

• Permit No: M1988112
• IBM Index Class Name: Permit File
• Doc Date: 11/8/1988
• Section_Exhibit Name: APPENDIX Q ADEQUACY REVIEW QUESTIONS AND RESPONSES
• Media Type: D
• Archive: No

around the entire heap perimeter; where the pregnant delivery pipe and
barren return pipes are routed; where these pipes enter the mill
faci]ity; etc.
Response: Figure C-10 (formerly Figure C-8) has been revised to include a
delineation of the facility pipeline corridor which traverses the
eastern and southern perimeter of the leach pad along the inside
of the access road. the mill facility pipeline configuration has
not yet been fully determined. Mill specifications will be
submitted upon completion.
Figure C-10 revised 2/15/89.
i 35. Sections E-f' and F-F' illustrated on Figure C-9 do not illustrate the
inclusion of the facility pipeline corridor to/from the pond/mill
facilities. Please include.
Response: Section F-F' on Figure C-11 (formerly Figure C-9) has been
revised to include the facility pipeline corridor. The pipeline
' corridor does not encircle the entire pad and is thus not
presented on Section E-E'.
Figure C-11 revised 2/15/89.
36. The Typical Section of Perimeter Berm and facility pipeline rorridor,
Detail 11, Figure C-10, does not illustrate a secondary recovery layer
I on the heap side of the berm. Please include.
Response: Detail 11 on Figure C-12 (formerly Figure C-10) has been revised
to illustrate a secondary recovery layer on the heap side of the
berm.
Figure C-12 revised 2/15/89.
i 37. Figure C-10, Detail 6, illustrates the Plan of Secondary Recovery/Leak
Detection System and Riser Pipe for Secondary Recovery/Leak Detection
Sumps. Please discuss whether this system networks under the entire
heap, or whether it is centraliied within the heap, and whether there
is more than one Leak Detection Sump.
' Response: The system shown on Figure C-12, Detail 6 is only present. in the
sump area of the leak detection/secondary recovery systen. There
are three such areas, one at the leach pad leak detection sump,
one at the barren pond leak detection sump, and one at the
pregnant pond leak detection sump.
No application change necessary.
Section D.7.4.2 Process Solution Ponds
38. The design parameters for sizing the pond capacity as stated are
appropriate. A comparison to the water balance simulation provided in
Appendix G shows the 52 acre-feet capacity to 6e exceeded at times by
the combination of draindown (varies from 24 to 28 ac-f t) and 100-year